JP3009039B2 - Footwear - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in footwear, and more particularly to a sole structure.

[0002]

2. Description of the Related Art Proper gait must be performed for disease prevention or health recovery. The correct walking balance of mankind starts from a standing posture. It starts with conditions that allow it to stand vertically and horizontally with respect to gravity. In order for human beings to stand vertically and horizontally with respect to the gravitational pull, the vertical and horizontal sides of the soles that touch the ground, which is the basis of human standing, must be obtained. Proper gait balance results in correct waist mixer movements and a healthy body. Ideally bare feet are best. In the footwear society, it must not limit the tolerance and function of barefoot exercise. Ideally, the sole and footwear should be able to walk together. However, conventional footwear impairs the tolerance and function of foot movement. For example, the sole of the conventional footwear has a raised heel by integral molding or by using a separate member. Therefore, the correct walking balance as described above could not be obtained. Some Japanese sandals have a uniform bottom thickness, but have the drawback that they do not follow the soles of the feet during walking and are easily detached.

[0003]

As described above, the conventional footwear hinders the allowable range and function of foot motion during a proper walking of a person. The present invention has been made in order to solve the drawbacks of the conventional footwear, and an object of the present invention is to provide footwear that does not prevent a person from walking properly.

[0004]

For this purpose, the footwear according to the invention has a uniform thickness and at least the upper part is flexible.
With a bottom made of a material
Is on a line passing through the center of the heel part and set in the longitudinal direction
Are defined as one end, and the other end is the periphery of the bottom.
Reaches the edge and the angle with the toe side direction on both sides with respect to said line
A plurality of straight cuts with acute angles
Or a groove is provided, and a cut is made along the line.
Notches or grooves as described above
Is characterized in that the depth of the groove reaches the upper part
And

According to this, when walking correctly,
The sole of the footwear changes easily according to the condition of the sole when touching down.
It does not hinder its walking.

Further, the sole of the footwear has a uniform thickness.
Always keep a fixed distance between the sole and the ground when landing
I have. For this reason, when walking, the foot
The state of the back is the same as the state of walking on the ground with bare feet.

According to this, it is possible to respond to the deformation in the width direction of the sole of the foot.
Even if the foot deforms, footwear will hinder walking even more
No more.

Further, according to the present invention, the set line
The angle of the cut or groove with respect to the toe side direction is 30
If it is between 60 degrees and 60 degrees, it will not hinder walking
The above-mentioned effects are generally obtained.

If this angle is 45 degrees, it is optimal.
is there.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described by taking sandals as an example. FIG. 2 shows an appearance of the sandals, and FIG. 1 shows a bottom contact surface side. The thong 1 of this sandal is the same as a normal sandal, but the sole 2 is entirely formed of a flexible member and has a uniform thickness. As shown in FIGS. 1 and 2, a plurality of V-shaped cuts 3 are provided on the back side. As shown in FIG. 3, the cut 3 is formed on the upper surface of the sole 2 at the approximate center point A (substantially at the center of the heel) of the sole of the foot of the assumed size, and at each of the thumb and forefinger of the foot. FIG. 1 shows a V-shaped line composed of lines inclined at 45 degrees toward the toe on both sides of the ground plane with respect to a line segment AB on the ground plane corresponding to a line segment connecting the point B between the bases. As shown in the figure, a plurality of the wires are provided at regular intervals (approximately 1 cm). The bottom 2 is made of rubber, sponge, or the like.

[0011] Since the sandals have such a structure,
It works as follows. When walking, the sole of a person's foot lands first on the heel and then on the toe. This state will be described from the side, as shown in FIGS. In other words, of the blocks formed by dividing the bottom 2 into a V-shape, the blocks gradually land from the heel side block. At this time, the cut 3 is opened according to the landing state of the foot, and the sole 2 of the shoe is adapted to the state of the sole of the foot.

The action seen from the side of the foot is as described above. However, when viewed in a plan view, when landing, the sole of the person's foot avoids the arch, and passes from the heel to the outside of the foot. It reaches the little finger side and lands in the order of the thumb side. In the present embodiment, this corresponds to the complicated movement of the sole of the foot (the sole of the foot has 26 bones). That is, the block formed by the cuts 3 is not symmetrical in the left and right lengths with respect to the line segment AB as shown in FIG. The portion outside the line segment AB is generally longer. For this reason, as shown in FIG. 5, when the blocks are sequentially grounded from the heel side block to the toe side block (the grounded portion is shown in black), in the process, the outer part is the inner part. It is in contact with the ground earlier. This state conforms to the contact state of the sole of the foot when the person walks as described above.

In this example, the angle of inclination with respect to the line segment AB is set to 45 degrees, but this angle optimally corresponds to the landing state of the sole of the foot during walking. However, this angle has substantially the same effect if it is between 30 degrees and 60 degrees. Also,
In the present embodiment, the notch 3 is inclined at the same angle on the left and right with respect to the line segment AB, but on the ground contact surface of the sole 3, the outer side of the sole of the foot lands faster than the inner side. If so, the angle may be different between the left and right.

FIG. 6 is a view for explaining sandals of another embodiment. The bottom 5 of the sandals of this embodiment includes a flexible upper portion 5a and a plurality of blocks 5b each fixed to the back surface of the upper portion 5a to form a lower portion of the bottom 5. In a state where each block 5b is fixed to the upper portion 5a, a V-shaped cut similar to the above-described embodiment is formed. According to this embodiment, the same operation and effect as those of the above-described embodiment can be obtained. Further, according to the present embodiment, the upper portion 5a and the lower portion 5b of the bottom 5 can be made of different materials. For example, the material of the block to be formed does not have to be the same material as the upper part, and although the flexibility is poor,
This has the effect that a material that is resistant to friction with the ground can be used.

FIG. 7 is a view for explaining sandals of still another embodiment. The sole 6 of the sandals has a uniform thickness and is made of a material having flexibility. The upper part is formed in the same shape as the above embodiments. As shown in FIG. 7, the lower portion 6b has a plurality of straight lines each having an acute angle with the toe side direction on both sides of a line segment C set in the longitudinal direction substantially at the center of the grounding surface. Cut 7a is provided. Here cut 7
“a” has a plurality of points on the line segment C as one end, and the other end reaches the peripheral edge of the bottom. The left and right cuts 7a with respect to the line segment C form a pair of right and left and form a V-shape. Further, in the present embodiment, the cut 7b is provided along the line segment C. The depths of these cuts 7a and 7b reach the upper part of the bottom 6.

According to this embodiment, in addition to obtaining the same operation and effects as those of the embodiment described with reference to FIGS. Due to the deformation, the walking movement is no longer hindered by the footwear.

The same effect can be obtained even if the bottom has a cut similar to that of this embodiment, and the upper and lower portions of the bottom are formed of different members as described with reference to FIG.

In each of the embodiments described above, a cut is provided at the lower portion of the bottom, but the cut may be a groove. If the sole has the structure as shown in these embodiments, the same effect can be obtained even when applied to any kind of footwear such as shoes and sandals, as well as sandals.

[0019]

According to the present invention, it is possible to provide footwear that has a very simple structure and does not hinder a proper walking of a person.

[Brief description of the drawings]

FIG. 1 is a bottom view of the bottom of a shoe according to an embodiment of the present invention.

FIG. 2 is an external view of footwear according to the embodiment of the present invention.

FIG. 3 is a view for explaining a shape of a cut in a sole of the footwear shown in FIGS. 1 and 2;

FIG. 4 is a view for explaining the operation of the footwear shown in FIGS. 1 and 2 as viewed from the side.

FIG. 5 is a view for explaining the operation as viewed from the back surface of the footwear shown in FIGS. 1 and 2;

FIG. 6 is an assembled perspective view for explaining another embodiment.

FIG. 7 is a bottom view of the bottom of a shoe according to still another embodiment.

[Explanation of symbols]

 2, 5, 6 Bottom 3, 7 Notch

Claims (3)

(57) [Claims] (1) The thickness is uniform, and at least the upper part is acceptable.
Comprising a bottom which is formed of a material having a FLEXIBLE, on the ground surface at the bottom of the bottom, as long substantially central heel portion
Multiple points on the line set in the hand direction
And the other end reaches the periphery of the bottom and is
Angled to the toe side on both sides
A plurality of straight notches or grooves are provided,
Furthermore, cuts or grooves are provided along the line.
The depth of the cut or groove reaches the upper part.
Footwear characterized by doing. 2. The notch in the direction of the toe side of the line.
The angle of the groove or groove is between 30 and 60 degrees
The footwear according to claim 1, characterized in that: 3. The angle between 30 degrees and 60 degrees is 45 degrees.
3. Footwear according to claim 2, wherein the footwear is in degrees.