JP7648258B1 - footwear - Google Patents

Abstract

[Problem] To provide footwear that is easy for anyone to wear. [Solution] Footwear comprising a sole portion and a main portion attached to the sole portion and covering a wearer's foot, an inner portion of the main portion has at least a first side portion that is disposed inside the main portion on the arch side of the wearer's foot and is a portion that comes into contact with the arch of the wearer's foot when worn, and a rear end portion that is disposed inside the main portion on the heel side of the wearer's foot and is a portion that comes into contact with the heel of the wearer's foot when worn and is connected to the first side portion, the first side portion is configured to be 30% to 40% of the total length of the main portion in the front-rear direction in a plan view, and the first side portion is configured to be sloped such that the height between the sole portion and the upper end portion of the first side portion gradually decreases as it moves from the protruding portion toward the front side of the main portion. [Selected Figure] Figure 3

Description

This disclosure relates to footwear (particularly short boots).

JP 2022-139151 A (Patent Document 1) describes footwear that has a heel at the rear end of the upper, and a hard protrusion that extends upward and diagonally backward from the top end of the heel. In this conventional example of footwear, the protrusion guides the heel of the foot into the footwear, so that the footwear can be put on correctly without using hands or a shoehorn.

However, for example, people with weak muscles (children, elderly people, etc.) or people with diseases or disabilities in some parts of the legs (such as the knees) tend to have their feet fall onto the inside (arch side) of both feet when trying to put on footwear. This is because when standing normally, the center line of the body is the center of gravity, and when stepping on the ground to put on shoes, the weight shifts to the center line of the body, making it easier to lean towards the inside (arch side) of the foot. For this reason, when trying to put on such footwear, there is no action to support the heel of the footwear by adjusting the angle slightly inward, as is done when using hands or a shoe horn, and it is easy to crush the arch side of the footwear with your foot. Moreover, similar inconveniences can occur not only in people with weak muscles, so it is believed that if the above-mentioned inconveniences could be eliminated, footwear that is easy for everyone to wear could be realized.

JP 2022-139151 A

One of the objectives of the specific aspects of the present disclosure is to eliminate the above-mentioned inconveniences and provide footwear that is easy for anyone to wear.

Footwear according to one embodiment of the present disclosure includes:
A footwear comprising a sole portion and a main body portion provided on the sole portion and covering a wearer's foot,
The main body portion is
A heel portion covering the heel of the wearer's foot;
a protrusion portion that protrudes from the heel portion toward the rear and diagonally upward of the main body portion and that comes into contact with the heel of the wearer's foot when the footwear is put on, thereby making it easier for the heel to slide into the footwear;
An inner part that is provided inside the main body part and has at least a portion extending from the heel part to the arch side of the wearer's foot and is configured in a substantially J-shape in a plan view;
It has
The inner part is
a first side portion that is disposed inside the main body portion on the arch side of the wearer's foot , configured to expand toward the inside of the footwear and configured to be flexibly contractible, and that is a portion that contacts the arch side of the wearer's foot when worn;
a second side portion that is disposed inside the main body portion on the opposite side of the arch of the wearer's foot in the left-right direction, configured to expand toward the inside of the footwear and configured to be flexibly contractible, and that is a portion that contacts the opposite side of the arch of the wearer's foot when worn;
a rear end portion that is connected to each of the first side portion and the second side portion, the rear end portion being disposed on the heel side of the wearer's foot inside the main body portion and contacting the heel of the wearer's foot when worn;
It has
The first side portion is configured to have a length of 30% to 40% of the total length of the main body portion in the front-rear direction in a plan view,
The second side portion is configured to have a length of 20% to 25% of the total length of the main body portion in a plan view,
The first side portion is configured to have a slope shape in which the height between the first side portion and the sole portion gradually decreases as the upper end portion moves from the protrusion toward the front side of the main body portion.
It is footwear.

The above configuration makes it possible to provide footwear that is easy for anyone to wear.

FIG. 1(A) is a left side view of the footwear of one embodiment, and FIG. 1(B) is a right side view of the footwear of one embodiment. FIG. 2(A) is a plan view of the footwear of the embodiment, and FIG. 2(B) is a rear view of the footwear of the embodiment. FIG. 3 is a perspective view of the inner portion 13 as viewed from the right side. FIG. 4 is a plan view of the inner portion 13 as viewed from above. FIG. 5 is a diagram showing a schematic diagram of the slope shape of the upper end portion of the inner portion 13. As shown in FIG. FIG. 6 is a diagram showing a schematic diagram of the positional relationship between the ankle of the left foot and the inner part 13. As shown in FIG.

The following describes footwear (shoes) according to an embodiment with reference to the drawings. Note that the following describes footwear for the left foot. Detailed description of footwear for the right foot will be omitted, as it has a symmetrical structure to the footwear for the left foot described below.

Figure 1(A) is a left side view of the footwear of one embodiment, and Figure 1(B) is a right side view of the footwear of one embodiment. Figure 2(A) is a plan view of the footwear of one embodiment, and Figure 2(B) is a rear view of the footwear of one embodiment.

The footwear of this embodiment shown in each figure is composed of a sole portion 11 and a main body portion 10 provided on top of it. The main body portion 10 has a total length L of, for example, about 20 to 30 cm according to the size of the foot, and is configured to cover the entire foot of the wearer (i.e., the toes, instep, sides of the foot, etc.). The main body portion 10 has an opening 10a at the rear end for inserting the foot. The sole portion 11 is provided on the lower part of the main body portion 10. The sole portion 11 is a portion for supporting the sole of the foot.

The main body 10 has a protrusion 12 at the top of its rear end. The protrusion 12 protrudes diagonally upward from the rear of the main body 10. This protrusion 12 is intended to allow the heel to be inserted smoothly without the need for a hand or shoehorn when inserting the left foot into the footwear. For this reason, the protrusion 12 and the heel portion 12a of the main body 10 that supports the protrusion 12 have a certain degree of hardness so that they do not lose their shape when the heel of the foot is inserted. The protrusion 12 is a portion that comes into contact with the heel of the wearer's foot when putting the footwear on, making it easier for the heel to slide into the inside of the footwear.

The main body 10 is provided with inner parts 13 arranged from the heel portion 12a to the front of the main body 10 on both the left and right sides. The inner parts 13 are formed, for example, using a core material arranged on the inside of the lining that covers the inside of the main body 10 and a flexible cushioning material arranged around the core material, and are arranged on the inside of the main body 10. In each figure, the range in which the inner parts 13 are arranged is shown with a pattern to make it easier to understand.

Figure 3 is a perspective view of the inner part 13 seen from the right side, and Figure 4 is a plan view of the inner part 13 seen from above. Here, the state in which only the inner part 13 is extracted from the main body part 10 is shown. The inner part 13 has a protrusion 20, a first side part 21, a second side part 22, and a rear end part 23. The inner part 13 is made of a material (soft elastic material) that has a certain degree of flexibility, and can flexibly contract to a certain degree according to the shape of the left foot when the left foot is placed inside the footwear (i.e., when the footwear is worn).

The protrusion 20 is a part that corresponds to the protrusion 12 of the main body 10 described above, and protrudes diagonally upward and rearward from the main body 10, similar to the protrusion 12. This protrusion 20 is disposed inside the protrusion 12 of the main body 10. The upper end position of the protrusion 20 is substantially the same as the upper end position of the protrusion 10 (see FIG. 1(A) etc.).

The first side portion 21 is a portion of the main body portion 10 that is located on the arch side of the left foot. The second side portion 22 is a portion of the main body portion 10 that is located on the opposite side of the arch side of the left foot.

The rear end 23 is the portion that is located on the rear end side of the main body 10. The rear end 23 is configured to bulge toward the rear of the main body 10 so as to encase the heel of the left foot.

The first side portion 21, the second side portion 22, and the rear end portion 23 are integrally configured as shown, and are configured to be generally J-shaped in plan view as a whole (see FIG. 4). The first side portion 21 is a portion that contacts the side surface of the arch side of the left foot and supports that side surface. The second side portion 22 is a portion that contacts the side surface opposite the arch side of the left foot and supports that side surface. The rear end portion 23 is a portion that contacts the heel of the left foot and supports the heel. As shown in FIG. 3 and FIG. 4 above, the first side portion 21, the second side portion 22, and the rear end portion 23 have a certain thickness and are configured to bulge toward the inside of the footwear.

The first side portion 21 is configured such that its length L1 (see FIG. 2A) is approximately 1/3 of the total length L of the main body portion 10. More specifically, it is preferable that the length L1 of the first side portion 21 is 30% to 40% of the total length L of the main body portion 10 (0.3L≦L1≦0.4L). This allows the first side portion 21 to support the portion of the foot skeleton from the calcaneus to the metatarsal (first metatarsal), providing more support for the arch side, where the left foot tends to collapse, and thus making it easier to insert the foot.

The second side portion 22 is configured such that its length L2 (see FIG. 2A) is approximately 1/4 of the total length L of the main body portion 10. More specifically, it is preferable that the length L2 of the second side portion 22 is 20% to 25% of the total length L of the main body portion 10 (0.2L≦L2≦0.25L). This improves the hold from the heel to the arch side and the opposite side, and allows for smooth insertion of the left foot.

1(B) and 3, the first side portion 21 is configured to have a slope shape in which the upper end portion gradually decreases in height from the protrusion 10 toward the position where the sole portion 11 is present. In this embodiment, the upper end portion of the first side portion 21 is configured to have a first portion 21a in which the degree of change in distance from the sole portion 11 is relatively small, and a second portion 21b in which the degree of change in distance from the sole portion 11 is relatively large. FIG. 5(A) is a diagram showing a schematic diagram of the slope shape of each upper end portion of the first portion 21a and the second portion 21b. In the example shown in FIG. 5(A), the boundary between the first portion 21a and the second portion 21b and the boundary between the first portion 21a and the protrusion 20 are each shown by dotted lines for ease of understanding.

The degree of change in distance here refers to the amount of change in distance between the upper end portion and the sole portion 11 per unit distance on the longitudinal axis of the main body portion 10 (the X-axis in FIG. 5A, etc.) (the amount of change in length on the Y-axis in FIG. 5A, etc.), where a small amount of change corresponds to a "small degree of change" and a large amount of change corresponds to a "large degree of change." In the example shown in FIG. 5A, the curve showing the outline of the upper end portion of the first portion 21a has a gentler (gentler) inclination with respect to the X-axis as it moves to the left in the figure (i.e., forward of the main body portion 10), while the curve showing the outline of the upper end portion of the second portion 21b has a steeper inclination with respect to the X-axis as it moves to the left in the figure (i.e., forward of the main body portion 10).

In this way, by configuring the upper end portion of the first side portion 21 so that it gradually decreases in height from the protruding portion 10 toward the sole portion 11, it is possible to ensure the function of suppressing deformation of the main body portion 10 caused by the heel of the left foot when inserting the left foot to put on the footwear, and it is possible to allow the arch portion of the left foot to smoothly enter inside the main body portion 10 without being hindered too much by the first side portion 21. Also, as a result of the smooth insertion of the left foot, it is possible to obtain the effect of making the height of the protruding portion 12 lower.

In particular, by providing the first portion 21a, in which the degree of change in distance from the sole portion 11 is relatively small, and the second portion 21b, in which the degree of change in distance from the sole portion 11 is relatively large, the first portion 21a can provide more support to the arch side when the left foot begins to be inserted into the main body portion 10, and after the left foot has entered the main body portion 10 to a certain extent, the contact area of the second portion 21b with the arch side is reduced, so that the movement of the left foot into the main body portion 10 is not hindered. Therefore, the insertion of the left foot into the main body portion 10, i.e., the action of putting on footwear, becomes smoother. In addition, the height of the protrusion 12 can be lowered accordingly, which allows for greater freedom in designing the protrusion above the heel in footwear that does not require the use of hands or a shoehorn.

In addition, by using the first portion 21a and the second portion 21b shown in FIG. 5(A), as shown in the schematic diagram of FIG. 6, when the left foot 30 is inserted into the main body portion 10, it is easy to ensure the size of each of the first portion 21a and the second portion 21b necessary and sufficient to smoothly insert the left foot while preventing discomfort caused by the inner portion 13 hitting the ankle 31 of the left foot 30. As illustrated by the dotted line in FIG. 6, the height of the upper end portion of the inner portion 13 can be appropriately set according to the function and design of the footwear. As illustrated in FIG. 5(B), the slope shape of the upper end portion of the first side portion 21 may be a curved shape such as a circular arc. In this case, although the slope shape of the upper end portion is a curved shape that is convex upward in the illustrated example, the slope shape of the upper end portion may be a curved shape that is convex downward. In addition, the upper end portion of the first side portion 21 may change to a linear shape as illustrated in FIG. 5(C). On the other hand, the upper end portion of the first side portion 21 may be configured to have three or more portions. In other words, the first side portion 21 may have any slope shape as long as its upper end portion gradually decreases in height toward the sole portion 11.

As shown in Figs. 1(A) and 4, the second side portion 22 has an upper end portion configured to have a slope shape in which the height gradually decreases from the protrusion 10 toward the sole portion 11. In this embodiment, the upper end portion of the second side portion 22 is configured to have a first portion 22a in which the change in distance from the sole portion 11 is relatively small, and a second portion 22b in which the change in distance from the sole portion 11 is relatively large. In other words, the first portion 22a has a relatively small inclination with respect to the sole portion 11, and the second portion 22b has a relatively large inclination with respect to the sole portion 11.

In this way, by configuring the upper end portion of the second side portion 22 so that its height gradually decreases from the protrusion portion 10 toward the sole portion 11, it is possible to ensure the function of suppressing deformation of the main body portion 10 caused by the heel of the left foot when inserting the left foot to put on the footwear, and also to allow the part of the left foot opposite the arch to smoothly enter the inside of the main body portion 10 without being obstructed much by the first side portion 21.

The upper end portion of the second side portion 22 does not necessarily have to be configured to have two portions as described above, and the upper end portion of the second side portion 22 may change linearly. On the other hand, the upper end portion of the second side portion 22 may be configured to have three or more portions. In other words, it is sufficient that the height of the upper end portion of the second side portion 22 gradually decreases toward the sole portion 11.

The above-described embodiment makes it possible to provide footwear that is easy to wear for anyone.

The present disclosure is not limited to the above-described embodiment, and various modifications can be made within the scope of the gist of the present disclosure. For example, the above-described embodiment illustrates footwear having a main body 10 that does not use laces, but the scope of application of the present disclosure is not limited to this, and can be applied to footwear having a main body that uses laces (so-called lace-up shoes) and other types of footwear having main bodies. In the above-described embodiment, the inner part 13 has a first side part 21 and a second side part 22, but the second side part 22 may be omitted and the inner part 13 may have a first side part 21 and a rear end part 23.

10: Main body portion 11: Sole portion 12: Protruding portion 13: Inner portion 20: Protruding portion 21: First side portion 21a: First portion 21b: Second portion 22: Second side portion 22a: First portion 22b: Second portion 23: Rear end portion

Claims (2)

A footwear comprising a sole portion and a main body portion provided on the sole portion and covering a wearer's foot,
The main body portion is
A heel portion covering the heel of the wearer's foot;
a protrusion portion that protrudes from the heel portion toward the rear and diagonally upward of the main body portion and that comes into contact with the heel of the wearer's foot when the footwear is put on, thereby making it easier for the heel to slide into the footwear;
An inner part that is provided inside the main body part and has at least a portion extending from the heel part to the arch side of the wearer's foot and is configured in a substantially J-shape in a plan view;
It has
The inner part is
a first side portion that is disposed inside the main body portion on the arch side of the wearer's foot , configured to expand toward the inside of the footwear and configured to be flexibly contractible, and that is a portion that contacts the arch side of the wearer's foot when worn;
a second side portion that is disposed inside the main body portion on the opposite side of the arch of the wearer's foot in the left-right direction, configured to expand toward the inside of the footwear and configured to be flexibly contractible, and that is a portion that contacts the opposite side of the arch of the wearer's foot when worn;
a rear end portion that is connected to each of the first side portion and the second side portion, the rear end portion being disposed on the heel side of the wearer's foot inside the main body portion and contacting the heel of the wearer's foot when worn;
It has
The first side portion is configured to have a length of 30% to 40% of the total length of the main body portion in the front-rear direction in a plan view,
The second side portion is configured to have a length of 20% to 25% of the total length of the main body portion in a plan view,
The first side portion is configured to have a slope shape in which the height between the first side portion and the sole portion gradually decreases as the upper end portion moves from the protrusion toward the front side of the main body portion.
footwear. The first side portion is
a first portion that is disposed relatively rearward with respect to a front-rear direction of the main body portion, and in which an inclination of the upper end portion with respect to a front-rear axis of the main body portion is relatively gentle;
a second portion disposed relatively forward with respect to the front-rear direction of the main body portion, and an inclination of the upper end portion with respect to the front-rear axis of the main body portion is relatively steeper than that of the first portion;
Footwear according to claim 1.

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