footwear

Abstract

To provide footwear that is easy for many people to wear. [Solution] Footwear comprising a sole portion and a main body portion provided on the sole portion to cover the wearer's foot, wherein the inner portion of the main body portion has at least a first side portion which is located on the arch side of the wearer's foot inside the main body portion and is in contact with the arch of the wearer's foot when worn, and a rear end portion which is located on the heel side of the wearer's foot inside the main body portion and is in contact with the heel of the wearer's foot when worn, and is connected to the first side portion, wherein the first side portion is configured to be 30% to 40% of the total length of the main body portion in the front-to-back direction in a plan view, and the upper end portion of the first side portion is configured in a slope shape in which the height between it and the sole portion gradually decreases as it moves from the protruding portion toward the front side of the main body portion.

Description

Technical Field

[0001] The present disclosure relates to footwear (especially low shoes).

Background Art

[0002] Japanese Patent Application Laid-Open No. 2022-139151 (Patent Document 1) describes footwear having a heel part at the rear end of the upper, and a hard projecting piece part extending obliquely upward and rearward is formed at the upper end of the heel part. In the footwear of this conventional example, since the projecting piece part guides the heel of the foot into the footwear, it can be worn correctly without using hands or a shoehorn.

[0003] By the way, for example, in the case of a person with weak muscle strength (such as a child or an elderly person) or a person having a disease or disorder in any part of the leg (such as the knee), when trying to put on footwear, the feet are likely to fall inward (the instep side) on each of the two feet. This is because when standing normally, the center line of the body becomes the center of gravity, and when performing an act of stepping on the ground to put on shoes, the weight is applied to the center of gravity located on the center line of the body, making it easier to tilt inward (the instep side) of the foot. Therefore, when trying to put on the above-mentioned footwear, there is no action of subtly adjusting the angle of the heel part of the footwear inward and supporting it as when using hands or a shoehorn, so it is likely to be in a state where the instep side of the footwear is crushed by the foot. Further, the same inconvenience can occur not only in a person with weak muscle strength but also in others. Therefore, if the above-mentioned inconvenience is eliminated, it is considered that footwear that is easy to wear for anyone can be realized.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] One of the specific aspects of this disclosure is to eliminate the above-mentioned inconveniences and to provide footwear that is easy for anyone to wear. [Means for solving the problem]

[0006] One aspect of footwear relating to this disclosure is, Footwear comprising a sole portion and a main body portion provided on the sole portion to cover the wearer's foot, The main body is, The heel portion covers the heel of the wearer's foot, This portion is configured to protrude from the heel portion toward the rear and diagonally upward of the main body, and has the function of making contact with the heel of the wearer's foot during the wearing motion, thereby facilitating the heel to slide into the inside of the footwear. An inner part provided inside the main body, having at least a portion extending from the heel portion toward the arch of the wearer's foot, and configured in a roughly J-shape in plan view, It has, The aforementioned inner part is Within the main body, the first side portion is positioned on the arch side of the wearer's foot and is the part that comes into contact with the arch of the wearer's foot when worn, Within the main body, the second side portion is positioned on the side opposite to the arch of the wearer's foot in the left-right direction, and is the part that comes into contact with the side opposite to the arch of the wearer's foot when worn. The rear end portion is located inside the main body on the heel side of the wearer's foot and is in contact with the wearer's heel when worn, and is connected to the first side portion and the second side portion, It has, The first side portion is configured to have a length of 30% to 40% of the total length of the main body in the front-rear direction when viewed from above. 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 in a slope shape such that the height between it and the sole portion gradually decreases as its upper end portion moves from the protruding portion toward the front of the main body portion. It is footwear.

[0007] According to the above configuration, it is possible to provide footwear that is easy for anyone to wear. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1(A) is a left side view of footwear according to one embodiment, and Figure 1(B) is a right side view of footwear according to one embodiment. [Figure 2] Figure 2(A) is a top view of footwear according to one embodiment, and Figure 2(B) is a rear view of footwear according to one embodiment. [Figure 3] Figure 3 is a perspective view of the inner part 13 from the right side. [Figure 4] Figure 4 is a plan view of the inner section 13 as seen from above. [Figure 5] Figure 5 schematically shows the slope shape of the upper end portion of the inner part 13. [Figure 6] Figure 6 schematically shows the positional relationship between the left ankle and the inner part 13. [Modes for carrying out the invention]

[0009] The following description will explain the footwear (shoes) of the embodiment with reference to the drawings. The description below will focus on the left footwear. Since the right footwear has a symmetrical structure to the left footwear described below, a detailed explanation will be omitted.

[0010] Figure 1(A) is a left side view of footwear according to one embodiment, and Figure 1(B) is a right side view of footwear according to one embodiment. Figure 2(A) is a top view of footwear according to one embodiment, and Figure 2(B) is a rear view of footwear according to one embodiment.

[0011] 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 at the bottom of the main body portion 10. The sole portion 11 is the part that supports the sole of the foot.

[0012] The main body 10 has a projection 12 at the upper part of its rear end. The projection 12 protrudes diagonally upward from the rear of the main body 10. This projection 12 is a part that allows the heel to enter the footwear smoothly without using hands or a shoehorn when putting the left foot in. For this reason, the projection 12 and the heel portion 12a of the main body 10, which supports the projection 12, have a certain degree of rigidity so that their shape does not collapse too much when the heel of the foot is inserted. The projection 12 is a part that comes into contact with the heel of the wearer's foot during the putting-on process and serves to make it easier for the heel to slide into the inside of the footwear.

[0013] The main body 10 includes inner sections 13 that extend from the heel portion 12a to the front of the main body 10 on both the left and right sides. The inner section 13 is constructed using, for example, a core material placed inside the inner lining that covers the inside of the main body 10, and a flexible cushioning material provided around the core material, and is located inside the main body 10. In each figure, patterns are added to make the area where this inner section 13 is provided easier to understand.

[0014] 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 inner part 13 is shown separated from the main body 10. The inner part 13 comprises a protruding part 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 with a certain degree of flexibility (a soft elastic material), and can contract to a certain extent flexibly according to the shape of the left foot when the left foot is placed inside the footwear (i.e., when the footwear is worn).

[0015] The protruding portion 20 is a portion corresponding to the protruding portion 12 of the main body portion 10 described above, and like the protruding portion 12, it protrudes rearward and obliquely upward from the main body portion 10. This protruding portion 20 is disposed inside the protruding portion 12 of the main body portion 10. The upper end position of the protruding portion 20 is substantially equal to the upper end position of the protruding portion 10 (see Fig. 1(A) etc.).

[0016] The first side portion 21 is a portion disposed at a portion on the instep side of the left foot in the main body portion 10. The second side portion 22 is a portion disposed at a portion opposite to the instep side of the left foot in the main body portion 10.

[0017] The rear end portion 23 is a portion disposed on the rear end side of the main body portion 10. The rear end portion 23 is configured to bulge rearward from the main body portion 10 so as to wrap around the heel of the left foot.

[0018] These first side portion 21, second side portion 22 and rear end portion 23 are integrally configured as shown in the figure, and as a whole, they are configured to be substantially J-shaped in plan view (see Fig. 4). The first side portion 21 is a portion that contacts and supports the side surface on the instep side of the left foot. The second side portion 22 is a portion that contacts and supports the side surface opposite to the instep side of the left foot. The rear end portion 23 is a portion that contacts and supports the heel of the left foot. As shown in Figs. 3 and 4 described above, the first side portion 21, second side portion 22 and rear end portion 23 have a certain thickness and are configured to bulge toward the inside of the footwear.

[0019] The first side portion 21 is configured such that its length L1 (see Fig. 2(A)) is about 1 / 3 of the total length L of the main body portion 10. More specifically, the length L1 of the first side portion 21 is preferably configured to be 30% to 40% of the length of the total length L of the main body portion 10 (0.3L ≦ L1 ≦ 0.4L). Thereby, the portion from the calcaneus to the midfoot bone (the first midfoot bone) in the foot skeleton can be supported by the first side portion 21, so that more support can be provided for the instep side where the left foot is likely to fall, and thereby the insertion of the foot can be made smooth.

[0020] The second side portion 22 has a length L2 (see Figure 2(A)) that is approximately 1 / 4 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 be 20% to 25% of the total length L of the main body portion 10 (0.2L ≤ L2 ≤ 0.25L). This enhances the hold from the heel to the arch and the opposite side, and allows for smooth insertion of the left foot.

[0021] As shown in Figures 1(B) and 3, the first side portion 21 is configured in a slope shape at its upper end, where the height gradually decreases from the protruding portion 10 towards the position where the sole portion 11 is located. In this embodiment, the upper end portion of the first side portion 21 is configured to have a first portion 21a where the degree of change in distance from the sole portion 11 is relatively small, and a second portion 21b where the degree of change in distance from the sole portion 11 is relatively large. Figure 5(A) is a schematic diagram showing the slope shapes of the upper ends of the first portion 21a and the second portion 21b. In the example shown in Figure 5(A), the boundary between the first portion 21a and the second portion 21b, and the boundary between the first portion 21a and the protruding portion 20 are shown by dotted lines for ease of understanding.

[0022] The degree of change in distance referred to here is the magnitude of the change in distance between the upper end portion and the sole portion 11 per unit distance along the front-to-back axis of the main body portion 10 (the X-axis in Figure 5(A), etc.) (the change in length along the Y-axis in Figure 5(A), etc.). A small change corresponds to a "small degree of change," and a large change corresponds to a "large degree of change." In the example shown in Figure 5(A), the curve showing the contour of the upper end portion of the first part 21a has a gentler slope with respect to the X-axis as it moves to the left in the figure (i.e., towards the front of the main body portion 10), while the curve showing the contour of the upper end portion of the second part 21b has a steeper slope with respect to the X-axis as it moves to the left in the figure (i.e., towards the front of the main body portion 10).

[0023] In this way, by configuring the upper end portion of the first side portion 21 to gradually decrease in height from the protruding portion 10 towards the sole portion 11, it is possible to ensure that deformation of the main body portion 10 by the heel of the left foot is suppressed when inserting the left foot to put on the footwear, and the arch of the left foot can be smoothly inserted into the main body portion 10 without being significantly obstructed by the first side portion 21. Furthermore, as a result of smoother insertion of the left foot, it is also possible to further reduce the height of the protruding portion 12.

[0024] In particular, by providing a first part 21a, which has a relatively small degree of change in distance from the sole part 11, and a second part 21b, which has a relatively large degree of change in distance from the sole part 11, it becomes possible to provide more support to the arch side by the first part 21a when inserting the left foot into the main body part 10, and after the left foot has entered the main body part 10 to some extent, the contact area with the arch side by the second part 21b decreases, so as not to hinder the movement of the left foot into the main body part 10. Therefore, the action of inserting the left foot into the main body part 10, that is, the action of putting on footwear, becomes smoother. In addition, the height of the protrusion 12 can be made lower, which increases the design freedom regarding the protrusion above the heel of footwear that does not require the use of hands or a shoehorn.

[0025] Furthermore, by using the first part 21a and the second part 21b shown in Figure 5(A), as schematically shown in Figure 6, it becomes easier to ensure that the size of each of the first part 21a and the second part 21b is sufficient to ensure smooth insertion of the left foot, while preventing discomfort caused by the inner part 13 hitting the ankle 31 of the left foot 30 when the left foot 30 is inserted into the main body 10. As illustrated by the dotted line in Figure 6, the height of the upper end of the inner part 13 can be set appropriately according to the function and design of the footwear. Note that, as illustrated in Figure 5(B), the slope shape of the upper end of the first side part 21 may be a curved shape such as an arc. In this case, although the slope shape of the upper end is a curved shape that is convex upwards in the illustrated example, the slope shape of the upper end may be a curved shape that is convex downwards. Also, as illustrated in Figure 5(C), the upper end of the first side part 21 may change to a straight line. On the other hand, the upper end of the first side part 21 may be configured to have three or more parts. In other words, the slope shape of the first side portion 21 can be any shape as long as its upper end portion gradually decreases in height towards the sole portion 11.

[0026] As shown in Figures 1(A) and 4, the second side portion 22 is configured in a slope shape at its upper end, where the height gradually decreases from the protruding portion 10 towards 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 where the change in distance from the sole portion 11 is relatively small, and a second portion 22b where 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.

[0027] In this way, by configuring the upper end portion of the second side portion 22 to gradually decrease in height from the protruding portion 10 towards the sole portion 11, it is possible to ensure that deformation of the main body portion 10 by the heel of the left foot is suppressed when inserting the left foot to put on the footwear, and the portion of the left foot opposite the arch can smoothly enter the main body portion 10 without being significantly obstructed by the first side portion 21.

[0028] Furthermore, the upper end portion of the second side portion 22 does not necessarily have to be configured to have the two parts described above; the upper end portion of the second side portion 22 may change in a straight line. On the other hand, the upper end portion of the second side portion 22 may be configured to have three or more parts. That is, the upper end portion of the second side portion 22 should gradually decrease in height towards the sole portion 11.

[0029] According to the embodiments described above, it is possible to provide footwear that is easy for anyone to wear.

[0030] It should be noted that this disclosure is not limited to the embodiments described above, and can be implemented in various ways within the scope of the gist of this disclosure. For example, although the above embodiments exemplified a footwear having a main body 10 that does not use laces, the scope of application of this 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 various other types of footwear having a main body. Also, although the inner part 13 had a first side part 21 and a second side part 22 in the above embodiments, the second side part 22 may be omitted, and the inner part may consist of a first side part 21 and a rear end part 23. [Explanation of Symbols]

[0031] 10: Main body 11: Sole 12:Protrusion 13: Inner part 20:Protrusion 21: First side 21a: Part 1 21b:Second part 22: Second side 22a: Part 1 22b:Second part 23: Rear end

Claims

1. Footwear comprising a sole portion and a main body portion provided on the sole portion to cover the wearer's foot, The main body is, The heel portion covers the heel of the wearer's foot, This portion is configured to protrude from the heel portion toward the rear and diagonally upward of the main body, and has the function of making contact with the heel of the wearer's foot during the wearing motion, thereby facilitating the heel to slide into the inside of the footwear. An inner part provided inside the main body, having at least a portion extending from the heel portion toward the arch of the wearer's foot, and configured in a roughly J-shape in plan view, It has, The aforementioned inner part is The first side portion is located inside the main body and is positioned on the arch side of the wearer's foot, and is the part that comes into contact with the arch of the wearer's foot when worn. Within the main body, the second side portion is positioned on the side opposite to the arch of the wearer's foot in the left-right direction, and is the part that comes into contact with the side opposite to the arch of the wearer's foot when worn. The rear end portion is located inside the main body on the heel side of the wearer's foot and is in contact with the wearer's heel when worn, and is connected to the first side portion and the second side portion, It has, The first side portion is configured to have a length of 30% to 40% of the total length of the main body in the front-rear direction when viewed from above. 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 in a slope shape such that the height between it and the sole portion gradually decreases as its upper end portion moves from the protruding portion toward the front of the main body portion. footwear.

2. The first side portion is, A first portion is positioned relatively to the rear with respect to the front-rear direction of the main body, and the inclination of the upper end portion of the main body with respect to the front-rear axis is relatively gentle, It comprises at least a second portion which is positioned relatively to the front of the main body with respect to the front-rear direction, and the inclination of the upper end portion of the main body with respect to the front-rear axis is relatively steeper than that of the first portion, Footwear according to claim 1.

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