Heel core and shoes

Abstract

Provided is a heel core that enables a user to easily put on shoes and provides a fitting feeling when worn. 【Solution means】The heel core 21 is provided at the heel part 13 of the shoe 10. The heel core 21 has a main body part 31 that becomes a part covering the user's heel Fb, and a guide part 32 that extends upward and rearward from the main body part 31. The guide part 32 has a curved shape that is concave forward when viewed from above. The guide part 32 has a rear guide part 36 with an inclined shape that faces forward as it goes downward from its upper end 32t. A through hole 26 is provided in the main body part 31.

Description

Technical Field

[0001] The present invention relates to a heel core and shoes.

Background Art

[0002] Patent Document 1 discloses a shoe in which a heel core is provided at the heel portion. If the heel portion of the shoe collapses, the wearing comfort deteriorates. The heel core makes the heel portion of the shoe less likely to collapse.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] A user may use a shoehorn to put on shoes. When a heel core is provided in a shoe, the ease of putting on the shoe may decrease. In particular, if the heel core is hard, depending on the shape of the heel core, the ease of putting on the shoe may decrease. Therefore, an object of the present invention is to provide a shoe that allows a user to easily put on the shoe and provides a fitting feeling when worn, and a heel core used for the shoe.

Means for Solving the Problems

[0005] The heel core of the present invention is provided at the heel portion of the shoe. The heel core has a main body portion that covers the user's heel and a guide portion that extends upward and rearward from the main body portion. The guide portion has a curved shape that is concave forward when viewed from above, and the guide portion has a rear guide portion with an inclined shape that faces forward as it goes downward from its upper end. A through hole is provided in the main body portion. The shoe of the present invention has a sole and an upper, and the heel core is provided in a heel region of the upper that holds the user's heel.

Effects of the Invention

[0006] According to the present invention, a user can easily put on shoes, and moreover, a feeling of fit can be obtained when the shoes are worn.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Modes for Carrying Out the Invention

[0008] FIG. 1 is an explanatory view of a shoe 10 having a heel core 21. The shoe 10 has a sole 11 and an upper 12. The sole 11 is a portion that supports the user's foot F from below. The upper 12 is located above the sole 11 and is a portion that wraps around and protects the user's foot F from above and from the left and right. The upper 12 has a heel portion 13 at its rear portion for holding the heel Fb of the user's foot F. The heel core 21 is provided in the heel portion 13. The upper 12 has an opening mouth 14 that opens for inserting the toe Ff of the foot F.

[0009] The upper 12 has a side material 24 in a side region A2 that covers the side surface Fs of the user's foot F. The side material 24 is made of, for example, cloth or leather. The side material 24 is single or double. The shoe 10 shown in FIG. 1 is a low shoe, but the shoe 10 described below may be other types of shoes such as sports shoes. In order to facilitate the user's operation of putting on the shoes 10, the shoes 10 have a projecting piece 15 that extends obliquely upward and rearward above the heel portion 13. The projecting piece 15 is a part of the upper 13, is integral with the heel portion 13, and has a shape that extends obliquely upward and rearward from the heel portion 13.

[0010] The directions of the shoes 10 and the heel core 21 will be described. With the user wearing the shoes 10, the toe Ff side is "front", and the heel Fb side is "rear". The direction from the rear part of the sole 11 toward the opening 14 is "up", and the opposite direction is "down". For the user wearing the shoes 10, the left hand side and the right hand side are "left" and "right" respectively.

[0011] The heel portion 13 of the shoes 10 has a heel core 21. The heel core 21 is provided in the heel region A1 of the upper 12 that holds the user's heel Fb. The upper 12 has an exterior material 22 and an interior material 23 in the heel region A1 having the heel portion 13. The exterior material 22 covers the heel core 21 from behind. The interior material 23 covers the heel core 21 from in front. The heel core 21 is interposed between the exterior material 22 and the interior material 23.

[0012] The exterior material 22 is made of cloth or leather. The exterior material 22 may be continuous with the side material 24, or the side material 24 may extend to the heel portion 13, and the exterior material 22 may be provided so as to overlap the outside of the side material 24. The interior material 23 is made of cloth or leather. The interior material 23 may be continuous with the side material 24, or the side material 24 may extend to the heel portion 13, and the interior material 23 may be provided so as to overlap the inside of the side material 24.

[0013] Figure 2 is a perspective view of the heel core 21. The heel core 21 of the present embodiment is made of resin. The heel core 21 is a thin plate member having curved surfaces in each part. The heel core 21 is more rigid and harder than the exterior material 22 and the interior material 23.

[0014] Figure 3 is a side view of the heel core 21. The heel core 21 has a main body portion 31 that becomes a portion covering the heel Fb (see FIG. 1) of the user, and a guide portion 32 that extends upward and rearward from the main body portion 31. The main body portion 31 and the guide portion 32 are made of a single resin molded product. The guide portion 32 is a portion that is separated from the heel Fb (ankle) of the user when the user wears the shoe 10. The protruding piece portion 15 shown in FIG. 1 is composed of the guide portion 32 of the heel core 21 and a portion covering the guide portion 32 of the exterior material 22 and the interior material 23.

[0015] The main body portion 31 has a rear wall portion 46 located behind the heel Fb of the user, a left wall portion 47L located on the left of the heel Fb of the user, and a right wall portion 47R located on the right of the heel Fb of the user. The left wall portion 47L extends from the rear wall portion 46 to the left front and covers the left side surface of the heel Fb. The right wall portion 47R extends from the rear wall portion 46 to the right front and covers the right side portion of the heel Fb. The main body portion 31 has a curved shape that is concave forward when viewed from above (see FIG. 4). In the case of this embodiment, with a virtual line J connecting the center C (see FIG. 4) of the arc forming the rear portion shape of the main body portion 31 and the rear end E of the main body portion 31 as the center, the range of an angle of 45 degrees on each of the left and right sides is the rear wall portion 46.

[0016] The guide portion 32 has a rear guide portion 36 that connects upward to the rear wall portion 46, a left guide portion 37L, and a right guide portion 37R. The left guide portion 37L is located to the left of the rear guide portion 36 and is connected in the vertical direction to the left wall portion 47L. The right guide portion 37R is located to the right of the rear guide portion 36 and is connected in the vertical direction to the right wall portion 47R. The guide portion 32 has a curved shape that is concave forward when viewed from above (see FIG. 4).

[0017] FIG. 5 is a cross-sectional view taken along the V arrow direction of FIG. 4. FIG. 5 shows a cross-section in a vertical plane passing through the intermediate position of the heel core 21 in the left-right direction. The rear guide portion 36 has an inclined shape that slopes forward as it goes downward from the upper end 32t of the guide portion 32 (rear guide portion 36). As shown in FIG. 5, the rear guide portion 36 has an inclined shape along a curve that is convex forward. In the state where the user wears the shoe 10, the rear guide portion 36 is located at a position facing the back of the upper part (ankle) of the user's heel Fb.

[0018] In the cross-section shown in FIG. 5, among the heel core 21, the portion having an inclined shape along the curve L1 that is convex forward in the rear guide portion 36 is the "guide portion 32", and the portion below the guide portion 32 is the "main body portion 31". In the cross-section shown in FIG. 5, the rear wall portion 46 of the main body portion 31 has a curved shape along a curve L2 that is convex rearward. The boundary between the guide portion 32 and the main body portion 31 is indicated by a virtual line with a two-dot chain line. In the case of this embodiment, the boundary passes through the inflection point between the curve L1 that is convex forward of the rear guide portion 36 and the curve L2 that is convex rearward of the rear wall portion 46. Note that in the cross-section shown in FIG. 5, a straight line may be interposed between the curve L1 that is convex forward and the curve L2 that is convex rearward. In this case, the boundary passes through the intersection point between the curve L1 that is convex forward and the straight line.

[0019] According to the heel core 21 having the guide portion 32 as described above, when the user wears the shoe 10 having the heel core 21, even without using a shoehorn, the heel Fb is guided by the guide portion 32, and it becomes possible to easily put on the shoe 10. And as shown in FIG. 2, a through hole 26 is provided in the main body portion 31. Due to the through hole 26, the rigidity of the main body portion 31 is lowered, and a fitting feeling can be obtained even when, for example, walking in the state where the user wears the shoe 10 having the heel core 21.

[0020] In the case of the form shown in FIG. 2, the through hole 26 is a hole that is longer in the left-right direction than in the up-down direction, and two long holes (through holes 26) are arranged side by side with a space in the up-down direction. Note that the number of through holes 26 is not limited to two. The number of through holes 26 may be one, or may be a plurality. Due to the long through-hole 26 of the through-hole as described above, the rigidity of the heel core 21 in the left-right direction bending is ensured, and the support force from the left and right to the heel Fb is maintained. On the contrary, the rigidity particularly for the front-back direction bending in the rear wall portion 46 is lowered, and for example, it becomes possible to enhance the fitting feeling of the shoe 10 when the user walks.

[0021] As shown in FIG. 5, the position P1 at the upper end and the rear end of the guide portion 32 is located further to the rear than the rear end P2 that is the most rear position of the main body portion 31. In this way, since the position P1 of the rear end of the guide portion 32 is relatively located to the rear, when the user wears the shoe 10 having the heel core 21, the heel Fb is easily guided by the guide portion 32, and it becomes possible to wear the shoe 10 even more easily.

[0022] The shape of the left and right front edges of the heel core 21 will be described with reference to FIGS. 3 and 5. The main body portion 31 has a left wall portion 47L and a right wall portion 47R. The front edge 471L of the left wall portion 47L (see FIG. 3) has an inclined shape that goes forward as it goes downward. The front edge 471R of the right wall portion 47R (see FIG. 5) has an inclined shape that goes forward as it goes downward. The guide portion 32 has a left guide portion 37L and a right guide portion 37R. The front edge 371L of the left guide portion 37L has an inclined shape that goes forward as it goes downward. The front edge 371R of the right guide portion 37R has an inclined shape that goes forward as it goes downward.

[0023] As shown in FIG. 3, the left front edge portion 41L of the heel core 21 from the front edge 371L of the left guide portion 37L to the front edge 471L of the left wall portion 47L has an inclined shape that goes forward without being recessed backward except for its lower end portion 34L as it goes downward. As shown in FIG. 5, the right front edge portion 41R of the heel core 21 from the front edge 371R of the right guide portion 37R to the front edge 471R of the right wall portion 47R has an inclined shape that goes forward without being recessed backward except for its lower end portion 34R as it goes downward.

[0024] Thus, the left front edge portion 41L of the heel core 21 (see FIG. 3) has an inclined shape that slopes forward as it goes downward from the upper end 32t of the guide portion 32 without being recessed later. The left front edge portion 41L has an inclined shape that slopes forward as it goes downward from the upper end 32t, excluding the lower end portion 34L. Similarly, the right front edge portion 41R of the heel core 21 (see FIG. 5) has an inclined shape that slopes forward as it goes downward from the upper end 32t of the guide portion 32 without being recessed later. The right front edge portion 41R has an inclined shape that slopes forward as it goes downward from the upper end 32t, excluding the lower end portion 34R.

[0025] According to the shapes of the left and right front edges of the heel core 21 like this, the user's heel Fb is widely wrapped in the left - right direction and the up - down direction by the heel core 21, and the supporting force of the heel Fb by the heel core 21 becomes higher.

[0026] The shape of the main body portion 31 of the heel core 21 will be described. The main body portion 31 (see FIG. 6) has a lower enlarged region K1 and an upper reduced region K2. Note that the guide portion 32 is the part above the reduced region K2 of the main body portion 31. The enlarged region K1 is a region where the left - right direction interval S between the left wall portion 47L and the right wall portion 47R gradually widens upward from the lower portion 31b of the main body portion 31. The reduced region K2 is a region where the left - right direction interval S gradually narrows upward from the enlarged region K1.

[0027] The main body portion 31 has a shape along the user's heel Fb and can wrap the heel Fb from the left and right. With such a shape of the main body portion 31, the fitting feeling of the heel Fb by the heel core 21 becomes higher.

[0028] The main body portion 31 (see FIG. 4) has a portion where the lateral interval S between the left wall portion 47L and the right wall portion 47R decreases as it goes toward the front edges 471L and 471R. Specifically, at the boundary between the enlarged region K1 on the lower side and the reduced region K2 on the upper side of the main body portion 31, the lateral interval S decreases from the intermediate position Q in the front-rear direction of the main body portion 31 as it goes toward the front edges 471L and 471R. That is, the lateral interval S gradually narrows forward from the intermediate position Q in the front-rear direction of the main body portion 31. With this shape, the fitting feeling of the heel Fb by the heel core 21 becomes even higher.

[0029] Another form of the through hole 26 will be described. The through hole 26 shown in FIG. 2 is an elongated hole that is long in the lateral direction as described above. In particular, the through hole 26 located below extends from the rear wall portion 46 to each of the left wall portion 47L and the right wall portion 47R. To match the overall shape of the heel core 21, the through hole 26 located below is longer in the lateral direction than the through hole 26 located above. The through hole 26 only needs to be provided at least in the rear wall portion 46, and it may be other than the shape and arrangement shown in FIGS. 2 to 6.

[0030] FIG. 7 is an explanatory view showing a modified example of the through hole 26 and is a view of the heel core 21 seen from the rear. In the case of the heel core 21 shown in FIGS. 7(A) and (B), the through hole 26 is provided not only in the main body portion 31 but also in the guide portion 32. The through hole 26 is an elongated hole in the lateral direction, and a plurality of through holes 26 are arranged at intervals in the vertical direction.

[0031] In the case of the heel core 21 shown in FIG. 7(C), the through hole 26 is not an elongated hole but a circular hole. The circular through holes 26 are arranged in a plurality in the lateral direction and are provided in a plurality of rows in the vertical direction. In the case of the heel core 21 shown in FIG. 7(D), the through holes 26 are oval, and there are provided a through hole 26 that is long in the left - right direction and a through hole 26 that is long in the up - down direction. The through hole 26 that is long in the left - right direction is provided in each of the guide portion 32 and the main body portion 31. The through hole 26 that is long in the up - down direction is provided so as to straddle the boundary between the guide portion 32 and the main body portion 31.

[0032] In the case of the heel core 21 shown in FIG. 7(E), in the main body portion 31, through holes 26 are provided in each of the rear wall portion 46, the left wall portion 47L, and the right wall portion 47R, and further, a through hole 26 is provided in the guide portion 32. In the case of the heel core 21 shown in FIG. 7(F), from the main body portion 31 to the guide portion 32, a combination of a through hole 26 that is long in the left - right direction and a set of a plurality of circular through holes 26 arranged side by side in the left - right direction are alternately arranged in the up - down direction.

[0033] As described above, in the heel core 21 of each of the above - mentioned forms, at least the main body portion 31 is provided with the through hole 26. The heel core 21 is harder than the exterior material 22 or the interior material 23 and is difficult to deform. Since the heel core 21 is hard and provided with the through hole 26, it is possible to reduce the rigidity and improve the wearing comfort of the shoe 10.

[0034] As described above, when the user wears the shoe 10, the guide portion 32 of the heel core 21 is utilized. That is, the guide portion 32 functions as a member for guiding the user's heel Fb into the shoe 10. For this reason, the heel core 21 including the guide portion 32 is hard. Even though the heel core 21 is hard, the through hole 26 is provided in the main body portion 31. For this reason, when the user wears the shoe 10, the wearing comfort can be improved.

[0035] Also, the through hole 26 makes it possible to enhance the breathability. In the shoe 10 having the heel core 21 of each of the above-described forms, it is preferable that, for at least a portion covering the through-hole 26, a material having higher waterproof property than the side material 24 is used for one or both of the exterior material 22 and the interior material 23. Further, it is preferable that a material having high moisture permeability is used for the portion covering the through-hole 26 as described above. That is, it is preferable that a moisture permeable waterproof material is used for the portion covering the through-hole 26.

[0036] 〔Others〕 Each of the forms disclosed this time is illustrative in all respects and not restrictive. The scope of the rights of the present invention is not limited to the above-described embodiments, but includes all modifications within the scope equivalent to the configuration described in the claims.

Explanation of Reference Numerals

[0037] 10 Shoe 11 Sole 12 Upper 13 Heel portion 21 Heel core 26 Through-hole 31 Body portion 32 Guide portion 36 Rear guide portion 41L Left front edge portion 41R Right front edge portion 46 Rear wall portion 47L Left wall portion 47R Right wall portion K1 Enlargement region K2 Reduction region S Interval

Claims

1. A heel core provided in a heel portion of a shoe, The shoe has a main body portion that covers the heel of a user, and a guide portion that extends upward and backward from the main body portion, The guide portion has a curved shape that is concave forward when viewed from above, The guide portion has a rear guide portion having an inclined shape that slopes downward from its upper end toward the front, The main body portion is provided with a through hole, The through hole is a hole that is longer in the left-right direction than in the up-down direction, The plurality of elongated holes are arranged in a vertical direction at intervals, a left front edge portion extending from the left front edge of the guide portion to the left front edge of the main body portion has an inclined shape that slopes downward and forward without being recessed backward, a right front edge portion extending from the right front edge of the guide portion to the right front edge of the main body portion has an inclined shape that slopes downward and forward without being recessed backward, The main body portion has a rear wall portion located behind the heel of the user, a left wall portion located to the left of the heel of the user, and a right wall portion located to the right of the heel of the user, The body portion has a lower enlarged region and an upper reduced region, the enlarged region is a region in which a left-right distance between the left wall portion and the right wall portion gradually increases from a lower portion of the main body portion toward an upper portion, the reduced area is an area in which the horizontal distance gradually narrows upward from the enlarged area, The main body portion has a portion in which a left-right distance between the left wall portion and the right wall portion decreases toward a front edge. Heel core.

2. The shoe has a sole and an upper, A shoe, comprising the heel core according to claim 1 provided in a heel region of the upper that holds the heel of a user.

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