HK1219034B - Footwear - Google Patents

Description

Shoes with removable sole

Technical Field

The present invention relates to a shoe for the stretching and correction of the foot.

Background

When a person stands, the foot supports the body by three parts, namely, a ball of the thumb (the root of the thumb), a ball of the little toe (the root of the little toe), and a heel. Also, the human foot has three arch structures spanning these locations. The arch structure is composed of muscles and ligaments, and functions as a cushion for absorbing impact applied to the three sites. Specifically, the three arch structure is composed of: a medial longitudinal arch that spans between the ball of the foot and the heel and forms the arch of the foot, a lateral longitudinal arch that spans between the ball of the little toe and the heel, and a lateral arch that spans between the ball of the foot and the ball of the little toe.

However, in recent years, an excessive load is applied to the toe of the foot when wearing high-heeled shoes or the like, and the number of people who press the lateral arch flat or warp in the opposite direction (downward) is increasing. A person who has deformed the shape of the transverse arch cannot sufficiently absorb the impact applied to the foot, and therefore is likely to be fatigued. In addition, hallux valgus, calluses, corns, and other symptoms are easily caused. In order to prevent adverse effects caused by such deformation of the lateral arch, shoes or insoles in which the foot contact surface is raised in the shape of the lateral arch to support the lateral arch during wearing have been proposed (see patent documents 1 to 3).

Documents of the prior art

Patent document

Patent document 1 Japanese patent laid-open publication No. 2009-17938

Patent document 2 International publication No. 2008/146376

Patent document 3 Japanese patent laid-open No. 2012-187374

Disclosure of Invention

Problems to be solved by the invention

As shown in fig. 8, the conventional shoe 100 described in the above patent document supports the lateral arch F from below during wearing, thereby reducing the burden on the lateral arch F and preventing deformation of the lateral arch F. In fig. 8, reference numeral 102 denotes a shoe body, 103 denotes a instep covering the instep of the foot C, 104 denotes a ground contact surface contacting the ground, and 105 denotes a foot contact surface contacting the sole of the foot. However, in the shoe 100, the lateral arch F is supported from below by the raised portion 107 of the foot contact surface 105 in a state where the ball of the thumb D and the ball of the little toe E of the foot C are supported by the foot contact surface 105, but the portion where the lateral arch F is formed is not strongly pressed from below. Therefore, the effect of the shoe 100 is merely to prevent the deformation of the transverse arch F when the shoe 100 is worn, and even when the shoe 100 is worn, the shape of the transverse arch F deformed by other reasons cannot be restored or corrected.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a shoe capable of appropriately correcting and stretching a lateral arch of a foot.

Means for solving the problems

The present invention is a shoe, characterized in that a lateral arch pressing portion whose cross section in the width direction is raised in an arc shape is formed between portions of a foot contact surface corresponding to the positions directly under a ball of the thumb and a ball of the little toe, and a pair of escape portions which do not support the ball of the thumb and the ball of the little toe are formed at portions of the foot contact surface corresponding to the positions directly under the ball of the thumb and the ball of the little toe.

When the shoe of the present invention is worn, the ball of the thumb and the ball of the little toe are not supported by the foot contact surface, and therefore, a load supported by the ball of the thumb and the ball of the little toe is not applied to the ball of the thumb and the ball of the little toe at ordinary times, but a strong load is applied from the lateral arch pressing portion to a portion located between the ball of the thumb and the ball of the little toe where a lateral arch is formed (hereinafter, referred to as a lateral arch forming portion). As described above, according to the shoe of the present invention, since the lateral arch forming portion of the foot can be strongly pressed from below by the lateral arch pressing portion, the shape of the deformed lateral arch can be corrected by the bulging shape of the lateral arch pressing portion having an arc-shaped cross section, and the muscles forming the lateral arch can be stretched to recover the fatigued muscles. In particular, the shoe of the present invention strongly presses the lateral arch forming portion, and therefore has the following advantages: even if the patch is not worn for a long time, the patch can be worn for only a few minutes to a few tens of minutes to obtain sufficient effects.

As a specific configuration of the escape portion of the present invention, the following configuration is proposed: at least one of the receding portions is formed lower than the lateral arch pressurization portion so that the foot contact surface does not contact the ball of the hallux or the little toe. As another structure, the following structure is proposed: at least one of the receding portions is configured to have a portion corresponding to a position directly below the ball of the thumb or the ball of the little toe missing so that the foot contact surface does not contact the ball of the thumb or the ball of the little toe.

In such a configuration, the ball of the thumb and the ball of the little toe do not abut on the foot contact surface, and therefore, almost all of the load supported by the ball of the thumb and the ball of the little toe can be applied to the lateral arch forming portion at ordinary times.

As another structure, the following is proposed: at least one of the receding portions is constituted by an inclined abutting portion which is inclined downward at an angle of 45 ° or more from a side edge of the lateral arch pressing portion toward the outside and abuts against an inner portion of the ball of the thumb or the ball of the little toe, and a non-abutting portion which is formed outside the inclined abutting portion and does not abut against the ball of the thumb or the ball of the little toe.

In such a configuration, although the inner side portion of the ball of the thumb or the ball of the little toe abuts on the foot contact surface at the inclined abutment portion, the ball of the thumb or the ball of the little toe does not support the body even if the ball of the thumb or the ball of the little toe abuts on the inclined abutment portion, and in such a configuration, a strong load can be applied to the lateral arch pressing portion. The non-contact portion may be formed at a low position so as not to contact the ball of the thumb or the ball of the little toe, or may include a ground plane.

In addition, in the present invention, the following is proposed: a slipper-type shoe is provided with a shoe main body forming a foot contact surface and a ground contact surface, and a instep covering the instep, wherein the instep is provided with a pair of instep pieces fixed to both side portions of the shoe main body, respectively, and a connecting mechanism connecting the pair of instep pieces to each other so as to be attachable and detachable, and is capable of being changed to a covering state in which the instep is covered by connecting the pair of instep pieces to each other by the connecting mechanism, and an open state in which the pair of instep pieces are separated from each other and opened outward.

In such a configuration, the upper side of the foot contact surface is opened by opening the instep, so that the lateral arch forming portion can be accurately and easily placed on the lateral arch pressurization portion, and the instep is connected after the foot is placed, so that the foot can be firmly held on the foot contact surface so that the sole of the foot does not deviate from the accurate position.

ADVANTAGEOUS EFFECTS OF INVENTION

As described above, the shoe of the present invention can appropriately correct and stretch the transverse arch of the foot.

Drawings

Fig. 1 is a perspective view of a slipper 1 according to an embodiment, fig. 1(a) shows a state where a instep 3 is covered, and fig. 1(b) shows a state where the instep 3 is opened.

Fig. 2 is a perspective view of the shoe main body 2.

Fig. 3 is a plan view of the shoe main body 2.

Fig. 4 is a sectional view taken along line a-a of fig. 3.

Fig. 5 is a sectional view of the shoe main body 2 of example 2.

Fig. 6 is a sectional view of the shoe main body 2 of example 3.

Fig. 7 is a sectional view of the shoe main body 2 of example 4.

Fig. 8 is a sectional view of conventional shoe 100.

Detailed Description

Embodiments of the present invention are illustrated by the following examples.

Example 1

This embodiment is a case where the present invention is applied to a slipper. As shown in fig. 1, the slipper 1 of the present embodiment is composed of a plate-like shoe body 2 forming a ground contact surface 4 and a foot contact surface 5, and a shoe back 3 covering the instep.

The instep 3 is composed of a pair of instep pieces 3a and 3b fixed to both right and left side edges of the shoe main body 2. The instep sheets 3a, 3b are made of cloth or the like, and surface fasteners (connecting means) 6 for connecting the instep sheets 3a, 3b to each other so as to be attachable and detachable are disposed on the surfaces thereof. As shown in fig. 1(a), the instep pieces 6, 6 are joined to each other to connect the instep pieces 3a, 3b, whereby the instep 3 is in a covering state covering the instep. As shown in fig. 1(b), the instep pieces 3a and 3b are separated by opening the surface fasteners 6 and 6, and the instep 3 can be opened to open the instep pieces 3a and 3b outward of the shoe main body 2. In this open state, the entire foot contact surface 5 is opened upward, and therefore, the sole of the foot can be accurately and easily placed on the foot contact surface 5.

As shown in fig. 2 to 4, the shoe main body 2 is a synthetic resin molded article formed in a plate shape. The shoe body 2 is formed to be larger than the sole of a wearer's foot, and has a lower surface forming a ground contact surface 4 to be in contact with the ground and an upper surface forming a foot contact surface 5 to be in contact with the sole. Here, the ground surface 4 is flat, and a concave-convex shape is formed on the pin contact surface 5. Specifically, the foot contact surface 5 has a concave-convex shape extending in the width direction at a portion corresponding to a portion directly below the lateral arch F of the foot C. As shown in fig. 3 and 4, the lateral arch F has an arch structure that is warped upward with the ball of the thumb D (the root of the ball of the thumb M1) and the ball of the little toe E (the root of the ball of the little toe M5) as both ends, and is composed of muscles and ligaments. More precisely, as shown in fig. 3, the transverse arch F starts with the joint portion of the first metatarsal H1 (ball of the foot D), passes through the joint portions of the second metatarsal H2, the third metatarsal H3 and the fourth metatarsal H4, and ends with the joint portion of the fifth metatarsal H5 (ball of the foot E).

As shown in fig. 2 to 4, a lateral arch pressing portion 7 having an arcuately bulging cross section in the width direction is formed on the foot contact surface 5 between the portions corresponding to the area directly under the ball of the thumb D and the ball of the little toe E, that is, the portion corresponding to the area directly under the lateral arch F. The arch shape of the transverse arch pressurization part 7 having an arc-shaped cross section is formed into a curved shape which is approximately the same as or slightly larger than the transverse arch F so that the transverse arch F can be corrected and expanded when the foot C is placed. The shoe main body 2 is made of a resin material having strong elasticity so that the cross-sectional shape of the lateral arch pressing portion 7 is not greatly deformed by the weight of the wearer.

On the other hand, a pair of left and right receding portions 8, 8 formed so as not to support the ball of the thumb D and the ball of the little toe E are provided in a portion corresponding to a portion directly below the ball of the thumb D and the ball of the little toe E on the foot contact surface 5. As shown in fig. 4, the escape portion 8 is a flat surface formed at a position lower than both side edges of the lateral arch pressing portion 7 by about 10mm, and is configured to prevent the ball of the thumb D and the ball of the little toe E from coming into contact with each other due to a difference in height from the lateral arch pressing portion 7.

According to the concave-convex shape of the foot contact surface 5, as shown in fig. 4, when the foot C is placed on the foot contact surface 5, the ball of the thumb D and the ball of the little toe E do not contact the foot contact surface 5, and a load supported by the ball of the thumb D and the ball of the little toe E is applied to a portion placed on the lateral arch pressing portion 7 at all times.

As described above, in the slippers 1 according to the present embodiment, the load which is normally supported by the ball of the thumb D and the ball of the little toe E is applied to the portion between the ball of the thumb D and the ball of the little toe E where the lateral arch F is formed, which is placed in the lateral arch pressing portion 7. Therefore, if the wearer stands or walks using the slipper 1 of the present embodiment, the lateral arch forming portion can be strongly pressed from below by the arch shape having the arc-shaped cross section of the lateral arch pressing portion 7, whereby the lateral arch F deformed by wearing high-heeled shoes or the like can be corrected, and the muscles forming the lateral arch F can be stretched. In particular, since the slippers 1 of the present embodiment strongly press the portion where the lateral arch F is formed from below, there are advantages as follows: even if the patch is not worn for a long time, the patch can be worn for only a few minutes to a few tens of minutes to obtain sufficient effects.

As shown in fig. 1(b), in the slippers 1 of the present embodiment, the instep 3 is opened, and the entire foot contact surface 5 is opened, so that the sole of the foot can be accurately and easily placed above the lateral arch pressurization portion 7 and the evacuation portion 8. In addition, the following advantages are provided: by covering the instep of the foot C with the instep 3 in a state where the sole is correctly placed on the foot contact surface 5, the positions of the foot contact surface 5 and the sole can be correctly maintained.

Example 2

In this embodiment, the shape of the relief portion is changed from that in embodiment 1. As is clear from a comparison of the cross-sectional views of the present embodiment (fig. 5) and the embodiment 1 (fig. 4), the relief portions 8a and 8a of the present embodiment are composed of an inclined surface 10 inclined outward from the side edge of the lateral arch pressing portion 7, and a flat surface 11 formed outward from the inclined surface 10. As described above, the escape portion of the present invention may be configured to be recessed obliquely as long as it does not abut on the ball of the thumb D and the ball of the little toe E. Note that, in the configuration of this embodiment and embodiment 1, the configuration other than the relief portion 8a is the same, and the common configuration is given the same reference numeral in the description and the drawings, and the description thereof is omitted.

Example 3

In this embodiment, the shape of the relief portion is changed from that in embodiment 1. As is clear from comparison of the cross-sectional views of the present embodiment (fig. 6) and the embodiment 1 (fig. 4), the escape portions 8b and 8b of the present embodiment have no portion corresponding to the area directly below the ball of the thumb D and the ball of the little toe E. As described above, the relief portion of the present invention is not limited to the recess, and may be constituted by a missing portion, and even in the case where the relief portion is constituted by a missing portion, the same effect as in the case of the recess can be obtained. Note that, in the configuration of this embodiment and embodiment 1, the configuration other than the escape portion 8b is the same, and the common configuration is given the same reference numeral in the description and the drawings, and the description thereof is omitted.

Example 4

In this embodiment, the shape of the relief portion is changed from that in embodiment 1. As shown in fig. 7, the retreat portions 8c, 8c of the present embodiment are constituted by an inclined contact portion 12 inclined downward from the side edge of the lateral arch pressing portion 7 toward the outside, and a non-contact portion 13 formed outside the inclined contact portion 12. In such a configuration, since the non-contact portion 13 is formed at a sufficiently lower position than the lateral arch pressing portion 7, the inner side portions of the ball D and the ball E contact the inclined contact portion 12 continuous with the lateral arch pressing portion 7, instead of the ball D and the ball E. However, since the inclined contact portion 12 is inclined downward at a steep angle of 45 ° toward the outside, even if the inner portions of the ball of the big toe D and the ball of the little toe E contact the inclined contact portion 12, the body is not supported by the contact portions. As described above, the escape portion of the present invention does not support the body by the contact portion even if the escape portion comes into contact with the ball of the thumb D and the ball of the little toe E as long as the escape portion is inclined downward at a steep angle to the outside, and therefore, the portion placed on the lateral arch pressing portion 7 can be strongly pressed from below to perform the correction and extension of the lateral arch F, as in the other embodiments. Further, although the non-contact portion 13 of the present embodiment is configured by a flat surface, the non-contact portion 13 may be an inclined surface or a missing portion.

The shoe of the present invention is not limited to the embodiment described above, and various modifications can be made without departing from the scope of the present invention. For example, the above embodiment is a case where the present invention is applied to a slipper, but the present invention can be applied to shoes other than a slipper model. In the above-described embodiment, the concave-convex shape and the missing portion are provided only in the portion of the foot contact surface 5 corresponding to the lateral arch, but the foot contact surface of the present invention may be formed in the concave-convex shape or may be missing other than the portion corresponding to the lateral arch within a range not to impair the operational effect of the present invention.

In the above-described embodiment, the foot contact surface 5 is a smooth surface, but a minute uneven shape that can exhibit an anti-slip effect can be formed on the foot contact surface of the present invention within a range that does not impair the operational effect of the present invention. In addition, the ground plane 4 may be provided with a concave-convex shape within a range not to impair the operation and effect of the present invention. In addition, in the above-described embodiments 1 to 3, the left and right receding portions have substantially symmetrical shapes, but a configuration may be adopted in which, for example, the left and right receding portions have asymmetrical shapes, in which one receding portion has the shape of embodiment 1 and the other receding portion has the shape of the receding portions of embodiments 2 to 4.

Description of the reference numerals

1 slipper (shoe)

2 shoe body

3 shoe back

3a, 3b instep pieces

4 ground plane

5-pin contact surface

6 surface fastener (connecting mechanism)

7 transverse arch pressurization part

8. 8a, 8b, 8c escape part

10 inclined part

11 flat part

12 inclined abutting part

13 non-abutting portion

C foot

D ball of thumb

E little toe ball

F transverse bow

Claims (5)

1. A shoe is characterized in that the shoe is provided with a shoe body,

a lateral arch pressing portion which is bulged in such a manner that a cross section in a width direction becomes an arc shape is formed between a portion of the foot contact surface which is located directly below the ball of the thumb and the ball of the little toe,

a pair of receding portions that do not support the ball of the thumb and the ball of the little toe are formed in a portion of the foot contact surface that is located directly below the ball of the thumb and the ball of the little toe, and the receding portions are configured such that the ball of the thumb and the ball of the little toe are not supported by the foot contact surface.

2. The shoe of claim 1,

at least one of the receding portions is formed lower than the lateral arch pressing portion so that the foot contact surface does not come into contact with the ball of the thumb or the ball of the little toe.

3. The shoe according to claim 1 or 2,

at least one of the receding portions is configured to leave a portion located directly under the ball of the thumb or the ball of the little toe absent, so that the foot contact surface does not come into contact with the ball of the thumb or the ball of the little toe.

4. The shoe according to claim 1 or 2,

at least one of the receding portions is composed of an inclined abutting portion and a non-abutting portion,

the inclined contact part is inclined downwards at an angle of more than 45 degrees from the side edge of the transverse arch pressurization part towards the outer side and is contacted with the inner side part of the hallux ball or the little toe ball,

the non-abutting portion is formed outside the inclined abutting portion and does not abut against a ball of the thumb or a ball of the little toe.

5. The shoe according to claim 1 or 2,

the shoe is a slipper-style shoe having a shoe main body and a instep covering the instep, the shoe main body forming a foot contact surface and a ground contact surface,

the instep comprises a pair of instep pieces and a connecting mechanism,

the pair of instep pieces are fixed to both side portions of the shoe main body, respectively, and the coupling mechanism couples the pair of instep pieces to each other so as to be attachable and detachable,

the shoe can be changed into a covering state and an opening state, wherein the covering state is a state that the pair of instep pieces are connected by the connecting mechanism and the instep is covered, and the opening state is a state that the pair of instep pieces are separated from each other and opened to the outside.