JP2020171343A - Footwear and heel structure - Google Patents

Abstract

To provide a footwear capable of changing a height of a heel part freely outside home without carrying the heel part having a different height.SOLUTION: A lower cell 401 is stored in an upper side cell 402. On an upper part of the lower cell 401, an engagement projection 312 is provided, and stored stably by an upper side guide 411 of the cell, and at an elongation time, the engagement projection 312 abuts on a lower side guide 412, to thereby prevent the lower cell 401 from falling. Further, when the lower cell 401 is rotated, the engagement projection 312 is sandwiched and fixed between a stationary plate 311 and the lower side guide 412.SELECTED DRAWING: Figure 4

Description

The present invention relates to a footwear and a heel structure, and more specifically, to a footwear such as a shoe having a bottom and a heel, and the foot and a heel structure in which the heel has a height equal to or higher than a predetermined value.

Footwear, especially high-heeled shoes such as so-called high heels, is widely used as an item that makes short statures look taller and emphasizes women's gait to complement fashion. However, on the other hand, long-term wearing of high-heeled shoes may cause foot pain, swelling, hallux valgus, and flat feet, and it is not easy for inexperienced people to walk and there is a risk of falling. Therefore, there was a need to stop using it in a short period of time. That is, it is preferable to wear shoes with high heels only at the timing and location that suits them, and shoes with lower heels at other times such as travel time, but for this purpose, shoes with extra high heels are used. There was a need for a product in which low shoes had to be carried around and shoes with high heels could be used reasonably without having spare shoes.

In response to this demand, various high-heeled shoes have been proposed, and such proposed high-heeled shoes can be mainly classified into a replaceable heel type and a foldable type. As a heel replacement type, there are no restrictions on the design of the heel part, the mounting strength can be maintained even with a small diameter replacement heel part, and a structure and simple attachment / detachment device that does not take up space in the height direction It is composed of a footwear body and a plurality of heels that can be attached to and detached from the footwear body via a detachable device for the purpose of providing footwear whose height can be changed stepwise, especially women's shoes. , This attachment / detachment device is provided on the dovetail portion attached to the heel support plate of the footwear main body portion, the dovetail groove portion provided on the upper surface of each heel portion for receiving the dovetail portion, and the bottom portion of the dovetail groove portion. A locking piece having a locking claw on the upper surface side attached by exposing the finger hook portion in the accommodating groove and being urged to rotate in the vertical direction, and the locking piece provided on the dovetail portion. A footwear composed of an engaging recess that engages with a locking claw portion of the above has been proposed (see Patent Document 1).

In addition, as a foldable heel type, it is possible to switch between high heel and low heel with a simple operation, and to provide footwear that ensures stability in both high heel and low heel states. For the purpose, the main body 11 that supports the sole of the foot, the fixed heel 21 that is integrally formed below the rear end of the main body, the movable heel 22 having the high heel ground contact portion 22c and the low heel ground contact portion 22d, and the movable heel are fixed. When the connection part 23 that connects to the heel so that it can move back and forth and swing back and forth, and the movable heel is located in the rear position with the high heel grounding part facing down and the low heel grounding part facing down. Proposed footwear is configured to have locking means 30, 40 that lock the swing of the movable heel with respect to the fixed heel and release the lock when the movable heel is located in the forward position. (See Patent Document 2).

Japanese Unexamined Patent Publication No. 2017-070535 Japanese Unexamined Patent Publication No. 2013-309

However, in the case of heel-replaceable footwear as in Patent Document 1, since it is necessary to carry heels of different heights as needed, even though the footwear is smaller than the footwear itself, baggage is not required after all. There is a problem that it cannot be done.

Further, in the case of foldable heel footwear as in Patent Document 2, although baggage is eliminated, there is a problem that the heel can be switched in only two stages in principle and cannot meet a wide range of needs. In addition, the shape of the footwear is manufactured in consideration of the overall balance including the height of the heel, and the footwear manufactured according to the higher heel may become uncomfortable when the heel is lowered. There is a problem that the design is deteriorated. For example, as can be understood by comparing with reference to FIGS. 1 and 16 of Patent Document 2, the shape shown in FIG. 16 has a toe portion higher than the finger base portion and is difficult to wear. This is because if the design is tailored to the higher heel, the instep and bottom of the footwear must be bent at a relatively small angle near the base of the finger, so the shape of the heel remains the same. This is because if it is lowered only, the inclination will be unnecessary for footwear with a low heel.

The present invention has been made in view of the above-mentioned conventional problems, and by adopting a structure in which the heel can be stored in the heel itself, the height of the heel can be freely set on the go without carrying the heels having different heights. It is intended to provide footwear and heel structures that can be modified. In addition, when changing the height of the heel part, the shape of the instep and the bottom part is changed accordingly so that the shape corresponds to the height of the heel part, so that the heel part can be comfortably worn at any height. It is intended to provide unimpeded footwear and heel structure.

In order to solve the above-mentioned problems, the invention according to claim 1 of the present application is a heel structure having a variable height, a plurality of cells having substantially the same shape and a cavity, and one cell of the plurality of cells. It is characterized by including a cell capable of accommodating another cell and a fixing means for fixing one cell of a plurality of cells in an extended state.

The invention according to claim 2 is characterized in that, in the heel structure according to claim 1, the plurality of cells have small dimensions so that the cells having the maximum dimensions can be accommodated in order.

The invention according to claim 3 is characterized in that, in the heel structure according to claim 2, the cell has the maximum dimension cell at the top and extends downward.

The invention according to claim 4 is characterized in that, in the heel structure according to claim 2 or 3, the cell is a substantially cylindrical shape, and the fixing means includes a fitting portion that is fitted by rotating the cell during extension. And.

The invention according to claim 5 is characterized in that, in the heel structure according to any one of claims 2 to 4, each cell has a central axis having a predetermined angle.

The invention according to claim 6 is the footwear having the heel structure according to any one of claims 1 to 5, and has a hole portion for extending the heel portion at a portion where the heel structure is joined at the bottom. It is a feature.

The invention according to claim 7 is a footwear having a variable heel height, and corresponds to a change in the height of the heel between the heel joint and the toe to which the height-variable heel is joined. A bottom including a flexible part that deforms, an instep toe that retains its shape with a hardness equal to or higher than a predetermined value, an instep made of a material having a hardness lower than that of the instep toe, and a part of the side surface of the instep. It is characterized by being provided with a storage means for accommodating the above.

The invention according to claim 8 is the footwear according to claim 7, further comprising a tension applying means for applying tension to the side surface portion and accommodating a part of the side surface portion in the accommodating means.

The invention according to claim 9 is characterized in that, in the footwear according to claim 7 or 8, the heel portion has the heel structure according to any one of claims 1 to 5.

According to the present invention, there are a plurality of cells having substantially the same shape and a cavity, in which one cell of the plurality of cells can accommodate another cell and one cell of the plurality of cells extends the other cell. Since the heel structure is provided with the fixing means for fixing with, the height of the heel part can be freely changed in a plurality of steps on the go without having to carry around the heel parts having different heights. In addition, the shape is maintained with a hardness equal to or higher than a predetermined value with the bottom including a flexible portion that deforms in response to a change in the height of the heel between the heel joint and the toe to which the height-variable heel is bonded. Since it is provided with an instep toe part, an instep part made of a material having a hardness lower than that of the instep toe part, and a storage means for accommodating a part of the side surface part of the instep part, the heel part can be set at any height. It is possible to prevent the comfort from being disturbed.

It is a perspective view and the rear view which shows an example of the footwear with a raised heel and the footwear with a lowered heel of one embodiment of the present invention. It is a side view of an example of the cell of one Embodiment of this invention. It is a figure for demonstrating an example of the cell of one Embodiment of this invention. It is a figure which shows the state of storage and extension in the example of two cells which are adjacent to the top and bottom of one Embodiment of this invention. It is a figure for demonstrating the switching from the lowest state of the heel to the highest state of an example of footwear of one Embodiment of this invention. It is a figure for demonstrating the expansion and storage of the cell of an example of one Embodiment of this invention. It is a figure for demonstrating the fixation of the extended state of the cell of one example of one Embodiment of this invention. It is a perspective view when viewed from the bottom of the footwear of one Embodiment of this invention. It is a perspective view and the side view for demonstrating the state when the height of the heel part of the bottom part of the footwear of one Embodiment of this invention is different. It is a side view for demonstrating the state of the instep toe portion and the side surface portion of the instep portion of the footwear of one embodiment of the present invention when the heights of the heel portions are different. It is a bottom view for demonstrating the change of the state of an example of the accommodating part of one Embodiment of this invention.

Hereinafter, embodiments of the footwear and heel structure of the present invention will be described with reference to the drawings. Even in different drawings, the same reference numerals are used to indicate the same processing and configuration.

In the present embodiment, it has been studied for the purpose of solving various problems concerning high heels with a high variable heel, which are currently proposed, which are also mentioned in the problems to be solved by the above-mentioned invention. In other words, in the case of replaceable heel footwear, it is necessary to carry around the heels of different heights, so even though it is smaller than the footwear itself, it is not possible to eliminate the baggage in the end. In order to make it a storage type that does not require carrying replacement parts, and to solve the problem of uncomfortable wearing when the heel is lowered by designing it according to the higher heel of foldable footwear, the sole of the shoe By using a flexible material from the base of the finger to the arch of the foot, it bends at an appropriate angle and the comfort is improved. Here, the inventor has discovered that when the height of the heel is adjusted, the instep of the shoe is deformed due to the curvature of the bottom, and the design is deteriorated, that is, the so-called laughing phenomenon of the shoe occurs.

Since the height of the heel does not change in ordinary shoes, the instep and bottom are made of a hard material so that the basically designed shape does not change. For example, as shown in FIG. 1, since the heights of the heel portions 112 and 212 are different between the instep portions 111 and 211 and the bottom portions 113 and 213, the shapes corresponding to the heights of the heel portions even if they have the same design. , It is understood that it is a design. Specifically, for example, as shown in FIG. 10, the flexible portion 911 between the finger base of the bottom portion 213 and the arch when the heel portion is low is substantially flat, but the bottom portion 113 when the heel portion is high. The flexible portion 911 of the above is shaped so as to bend at a predetermined angle in order to adjust the height of the toe portion and the heel joint portion. Regarding the bottom of the shoe, the above problem can be solved by providing a flexible portion, but when the bottom is deformed according to the height of the heel, the insteps 111 and 211 actually have a force to deform. Turned out to join. That is, referring to FIG. 10, for example, when the instep 211 is designed based on the low heel, a force is applied so that the side surface of the instep is pushed up from the bottom when the bottom is bent, but the upper surface of the instep Does not deform, but the side surface deforms, creating a gap between the foot and shoes, and the shape becomes like laughing. This is a phenomenon in which shoes laugh, and the design is deteriorated. Therefore, various improvements have been made to avoid this, and as will be described later, in this embodiment, a structure that does not laugh even if the heel part is raised. Was able to be achieved.

As described above, the present invention provides a new structure of the instep and the bottom corresponding to the change in the height of the heel and the heel with variable height, and is mainly applied to shoes such as high heels. , But not limited to this, in general, it can be applied to all kinds of footwear having a heel, an instep and a bottom.

(Heel structure)
FIG. 1 is a perspective view and a rear view showing an example of footwear with a high heel and footwear with a low heel according to an embodiment of the present invention, and FIG. 2 is a side view of an example of a cell of the present embodiment. Further, FIG. 3 is a diagram for explaining an example of a cell according to an embodiment of the present invention, and FIG. 4 is a diagram showing a state of storage and expansion in an example of two cells vertically adjacent to each other according to the present embodiment. Is. FIG. 5 is a diagram for explaining switching from the lowest heel state to the highest heel state in an example of the footwear of the present embodiment. The heel multi-step variable high heel, which is an example of the present embodiment, applies the heel structure of the present invention, and can easily perform a jig or the like from the low heel state 201 shown in FIG. 1 to the high heel state 101 with one high heel. Can be changed without using.

Here, the high heels, which are an example of the footwear of the present embodiment, mainly cover the front part of the foot and prevent the insteps 111 and 211 from coming off, the heel part 112 that determines the height of the high heel, and the heel part 112. It is composed of 212 and soles 113 and 213 corresponding to the sole. The heel portions 112 and 212 of the present embodiment are characterized in that they have a structure in which cells, which are members having substantially the same shape but different dimensions, are laminated, as can be understood with reference to FIG. As shown in FIG. 1, a plurality of cells have the largest cell at the top, the smaller cells are arranged at the lower side thereof, and the lowest cell, that is, the cell in contact with the ground is the smallest cell, but the cell is not limited to this. , The bottom cell can be maximized, and the middle cell can be maximized. As will be described later, when the heel portion is raised, the cells are elongated so as to be stacked, and when the heel portion is lowered, the cells are stored in the cell.

The basic structure of the above cells is a substantially cylindrical and hollow structure as shown in FIGS. 3 and 4, except for the cells having the smallest dimensions. As shown in FIG. 220, the shape of the cell is exactly like a disk or a truncated cone connected to the lower part of a thin cylinder, and the central axis of the cylinder and the truncated cone is small. Is angled. That is, as shown in FIG. 3, the cell 301 has a structure in which the cylindrical portion 302 and the truncated cone portion 303 are connected, but the lower portion becomes the truncated cone portion 303 and the diameter decreases as it goes downward. , A small diameter cell can be installed at the bottom. Basically, the truncated cone portion 303 is hollow so that the cells adjacent to the lower side are housed, and a fixing plate 311 for fixing the cell when the cell is extended is provided below the cylindrical portion 302. It is provided in the lower quarter lap. Here, in the present embodiment, since it is a fixing means at the time of extension, it has a substantially cylindrical shape, but if another fixing method can be used, it is not limited to this, and any shape known in the present technical field such as a square prism or a triangular prism can be used. In addition, the shape is not limited to a combination of a cylinder and a truncated cone, and a simple cylinder or the like can be used.

Explaining the case where the stored cell is extended with reference to FIG. 4, the lower cell 401 is stored in the upper cell 402. A fitting convex portion 312 is provided on the upper portion of the lower cell 401, and is stably stored by the upper guide 411 of the cell 301. When extended, the fitting convex portion 312 abuts on the lower guide 412 and lowers. The side cell 401 is prevented from falling off. Further, when the lower cell 401 is rotated as described later, the fitting convex portion 312 is sandwiched and fixed between the fixing plate 311 and the lower guide 412.

Explaining the storage and expansion of cells with reference to FIG. 5, the example shown in FIG. 5 has a heel structure having seven cells, and therefore all are extended from the stored state 501. Up to 502, 7 states can be taken, that is, the height of the heel can be changed in 7 steps. For example, assuming that the height of one cell is 1 cm, the height of the heel portion can be changed in 7 steps from 1 cm to 7 cm. As described above, each cell has substantially the same shape and has a size capable of accommodating cells adjacent to the lower side. Therefore, as shown in the state 501, all the cells can accommodate the cells adjacent to the lower side. Highly variable heels can be lowered to the lowest without having to replace or fold the heels like high heels. Here, in the present embodiment, the uppermost cell 503 has the maximum dimension, and the lowermost cell 504 is not hollow because there is no cell to be stored further below, but it is hollow. It does not have to have the shape shown in FIG. Further, in the present embodiment, seven cells are used, but the present invention is not limited to this, and more cells can be used, or a smaller number of cells can be used.

The heel portion of the present embodiment is not shown when the height is between the highest and the lowest, but the upper cell is extended so that the lower cell accommodates all the cells below it. For example, when the cells are expanded into four stages and used, the four cells are expanded in order from the uppermost cell 503, and the three cells below the upper cell are stored in the fourth stage cell. This is because when the heel part is low, it is more stable to make the heel part thicker as a whole, but the heel part is not limited to this, and any cell can be extended to form a heel part having an intermediate height.

Further, as can be understood by referring to the extended state of all the cells in FIG. 5, since a predetermined inclination is added to the cylindrical portion 302 and the truncated cone portion 303 of the cell 301 as described above, the inclination is formed for each cell. Is accumulated, and the heel part becomes a curved shape so as to draw an arc as a whole. This is to increase the strength of the high heel and improve the design.

(Heel height switching operation)
As described above, the structure of the heel portion of the present invention is to stack a plurality of hollow cells and store or extend them to adjust the height. Specifically, the height is changed, that is, the cells are extended or stored. The operation will be described with reference to FIGS. 6 and 7. FIG. 6 is a diagram for explaining the expansion and storage of a cell of an example of the embodiment of the present invention, and FIG. 7 is a diagram for explaining the fixation of the expanded state of the cell of the example of the present invention. .. In FIG. 7, the upper cell 402 is shown except for the truncated cone portion 303 for explanation. As shown in FIG. 6, a cell adjustment hole 601 is provided at a position where the heel portion of the bottom portion 213 of the high heel of the present embodiment is connected. For example, by inserting a finger or the like through the cell adjustment hole 601 and operating the cell adjustment hole 601. , Any cell stored in the top cell 503 can be pushed out to extend the cell. Further, the extended cell can be stored by pushing it from the tip. Since the cell adjustment hole 601 may affect the feel when actually worn even if it is large enough to accommodate a finger, it can be closed by a method that can be easily adjusted and operated, such as an insole.

As described above, the cell can be expanded by a simple operation, but if a load is applied to the heel as it is, it will fit in the upper cell, so some mechanism for fixing the expanded state is required. Any method known in the art can be used as the fixing method, but in the present embodiment, a mechanism for fixing the cell by rotating it at a predetermined angle, for example, 90 degrees is provided. Specifically, as shown in FIG. 3, a fitting convex 312 is provided on the upper part of the cell, and a fixing plate 311 is provided together with the fitting convex 312. When the cell is extended, the fitting convex portion 312 of the lower cell is held by the lower guide 412 of the upper cell so as not to fall off as shown in FIG. 4, but at the same time, the lower cell 401 is held at the position shown in FIG. When is rotated, it is in a state of being pressed by the lower side of the fixing plate 311 from above. That is, by aligning the fitting convex portion 312 with the extended state fixed position 701 where the fixing plate 311 exists, the lower guide 412 is located below, so that the fitting convex portion 312 is on the lower side with the fixing plate 311. It will be sandwiched between the guides, and the lower cell 401 will be fixed in the extended state. It is also possible to separately provide a fixing mechanism such as a protrusion so that the cell rotates carelessly and the fitting convex portion 312 does not shift from the extended state fixed position 701, and a constant frictional force is provided at the extended state fixed position 701. Can be prevented from inadvertent rotation by a method known in the present art, such as adding a sword to the fitting convex portion 312. When storing, the cell 401 can be rotated to align the fitting convex portion 312 with the position of the empty area 702, and the cell 401 can be stored. Even when it is stored, the stored state can be fixed by using a mechanism known in the present technology.

Further, in the present embodiment, the positioning groove 703 can be provided so as to face a certain direction when fixed. For example, if all cells are configured so that the positioning groove 703 faces the front when fixed in the extended state, the grooves can be arranged in a row on the front of the heel as shown in FIG. 8, and the groove can be securely fixed from the outside. It can be confirmed that it is in a state. FIG. 8 is a perspective view seen from the bottom surface, but as shown in the portion 801 in front of the heel, the positioning grooves 703 of each cell are aligned in the same direction and are in a straight line, so that they are securely fixed. Can be understood by. As shown in FIG. 8, the positioning groove 703 is not limited to the front, and can be aligned in either direction, and the shape of the groove can be any shape or protrusion known in the present art.

(Instep and bottom structure)
Although the structure and height adjustment of the heel portion of the present embodiment have been described, as described above, it is necessary to change the shape of the sole and the instep, which are the soles, when the height of the heel portion changes. First, since the bottom portion becomes steeper as the heel portion becomes higher, a flexible portion is provided as shown in FIG. 9 so that the bottom portion can be bent. FIG. 9 is a perspective view and a side view for explaining a state when the height of the heel portion of the bottom of the footwear according to the embodiment of the present invention is different. As can be understood with reference to FIG. 9, since the bottom portion 213 when the heel portion is low is substantially flat, the flexible portion 911 also hardly bends. Adjusting the height of the heel to increase the inclination of the bottom increases, but the flexible bottom can be bent by an angle necessary for the flexible portion 911 to absorb it, and the bottom can be deformed. The flexible portion can be made of a material having a low hardness, or a material and a structure known in the present technical field can be used, such as making it structurally easy to bend.

As described above, the flexible portion 911 provided on the bottom allows the bottom to be deformed according to the height of the heel, but the side surface of the instep is deformed accordingly as shown in FIG. The present inventor has discovered that the above-mentioned phenomenon of laughing shoes occurs. FIG. 10 is a side view for explaining the state of the instep toe portion and the side surface portion of the instep portion of the footwear according to the embodiment of the present invention when the heights of the heel portions are different. With reference to FIG. 10, it can be understood that the shape of the side surface portion of the instep of the high heel of the present embodiment is different between the low heel state 201 and the high heel state 101. Specifically, since the flexible portion 911 bends, the portion rearward from the flexible portion at the bottom is inclined, so that the instep 1002 is pressed from below by the bottom lifted by the inclination and becomes smaller. Since the material of the instep 1002 does not shrink, the excess material on the side surface swells in the lateral direction and becomes wrinkled, which deteriorates the design. In the present embodiment, the instep toe portion 1001 and the instep portion 1002 are composed, the instep toe portion is made of a relatively high hardness material, the instep material is made of a low hardness material, and as shown in FIG. The material of the side surface of the instep is accommodated on the back surface of the bottom to respond to changes in the height of the heel.

FIG. 11 is a bottom view for explaining a change in the state of an example of the accommodating portion according to the embodiment of the present invention. In order to cope with the deformation of the side surface portion of the instep portion, in the present embodiment, the instep portion is formed of a material having low hardness, and in the high heel state 101 shown in FIG. 11, the material 1113 left over when the instep portion becomes smaller. Is accommodated in the accommodating portion 1101 provided on the back surface of the bottom portion. Here, in the present embodiment, the instep toe portion is made of a material having a relatively high hardness, and the material of the instep is made into a material having a low hardness. Specifically, the instep toe portion is made of a material having a high hardness core. If it is possible to make a material that can absorb the deformation of the side surface of the instep that is deformed by the change in the height of the heel, such as covering the entire instep with a material with relatively low hardness. , Any material or manufacturing method known in the art can be used.

In FIG. 11, it is shown that the material of the side surface of the instep surplus in the high heel state 101 is simply pulled to the back surface of the bottom, but in reality, it may be covered with a material suitable for some kind of sole. A space for accommodating the surplus material can be provided in the bottom portion, or the accommodating portion can be formed by any method known in the art. Further, in order to accommodate the surplus material of the side surface portion of the instep portion, in the present embodiment, rubber which is a tension applying means is attached to the material of the side surface portion on both sides of the instep portion. In such a configuration, in the low heel state 201, the material is all in the instep, so the rubber is in the stretched state 1111. However, in the high heel state 101, the material is left over, so the rubber shrinks and pulls the material to the back of the bottom. It becomes a contracted state 1112.

In the present embodiment, by adopting the structure of the instep and the bottom as described above, even if the height of the heel is changed, the shape of the footwear is changed according to the height of the heel, and wrinkles and the like are generated. It is possible to prevent the design from being deteriorated due to the so-called laughing phenomenon of shoes.

101 High heel 111, 211 Instep 112, 212 Heel 113, 213 Bottom 201 Low heel 301, 401, 402 Cell 302 Cylindrical 303 Circular truncated cone 220 Cell side view 311 Fixed plate 312 Fitting convex Part 411 Upper guide 412 Lower guide 501 With all cells stored 502 With all cells extended 503 Top cell 504 Bottom cell 601 Cell adjustment hole 701 Extended state Fixed part 702 Free space 703, 801 Positioning groove 911 Flexible part 1001 Instep part Toe part 1002 Instep part 1101 Containment part 1111 Stretched state 1112 Shrinked state 1113 Surplus material

In order to solve the above-mentioned problems, the invention according to claim 1 of the present application is a heel structure having a variable height, a plurality of cells having substantially the same shape and a cavity, and one cell of the plurality of cells. A cell capable of accommodating another cell, a fixing means for fixing one cell of a plurality of cells in an extended state, and a stable accommodating means for stably accommodating another cell in one cell. It is characterized by being prepared.

The invention according to claim 5 is the heel structure according to any one of claims 2 to 4, wherein the cells are housed in one cell and an axis that vertically passes through the center of the upper surface of one cell when extended. It is characterized in that an axis perpendicularly passing through the center of the upper surface of another cell has a predetermined angle.

According to the present invention, there are a plurality of cells having substantially the same shape and a cavity, in which one cell of the plurality of cells can accommodate another cell and one cell of the plurality of cells extends the other cell. Since the heel structure is equipped with a fixing means for fixing with and a stable storage means for stably storing other cells in one cell, the heel part can be freely moved on the go without having to carry the heel part with different heights. The height of can be changed in multiple steps. In addition, the shape is maintained with a hardness equal to or higher than a predetermined value with the bottom including a flexible portion that deforms in response to a change in the height of the heel between the heel joint and the toe to which the height-variable heel is bonded. Since it is provided with an instep toe part, an instep part made of a material having a hardness lower than that of the instep toe part, and a storage means for accommodating a part of the side part of the instep part, the heel part can be set at any height. It is possible to prevent the comfort from being disturbed.

In order to solve the above-mentioned problems, the invention according to claim 1 of the present application is a heel structure having a variable height, a plurality of substantially isomorphic, hollow cells, and one cell of the plurality of cells. A cell capable of accommodating another cell, a fixing means for fixing one cell of a plurality of cells in an extended state, and a stable accommodating means for stably accommodating another cell in one cell. Each of the cells has a predetermined angle between an axis that vertically passes through the center of the upper surface of the one cell and an axis that vertically passes through the center of the upper surface of the other cell housed in the one cell. and wherein the Rukoto to have a.

The invention according to claim 2 is a footwear having a variable heel height, and corresponds to a change in the height of the heel between the heel joint and the toe to which the height-variable heel joins. A bottom including a flexible part that deforms, an instep toe that retains its shape with a hardness equal to or higher than a predetermined value, an instep made of a material having a hardness lower than that of the instep toe, and a part of the side surface of the instep. It is characterized by being provided with a storage means for accommodating the above.

The invention according to claim 3 is characterized in that, in the footwear according to claim 2 , a tension applying means for applying tension to the side surface portion and accommodating a part of the side surface portion is further provided in the accommodating means.

The invention according to claim 4 is characterized in that, in the footwear according to claim 2 or 3 , the heel portion has the heel structure according to claim 1.

According to the present invention, there are a plurality of cells having substantially the same shape and a cavity, in which one cell of the plurality of cells can accommodate another cell and one cell of the plurality of cells extends the other cell. The cell is provided with a fixing means for fixing the cell and a stable storage means for stably storing the other cell in one cell, and each of the cells has an axis vertically passing through the center of the upper surface of the one cell at the time of extension and the cell. since the axis passing through the center of the upper surface of the other cells housed in one cell in the vertical will adopt Rukakato structure having a predetermined angle, free on the go without carrying different heel heights The height of the heel can be changed in multiple steps. In addition, the shape is maintained at a hardness equal to or higher than a predetermined value with the bottom including a flexible portion that deforms in response to a change in the height of the heel between the heel joint and the toe to which the height-variable heel joins. Since it is provided with an instep toe part, an instep part made of a material having a hardness lower than that of the instep toe part, and a storage means for accommodating a part of the side surface part of the instep part, the heel part can be set at any height. It is possible to prevent the comfort from being disturbed.

Claims (9)

Heel structure with variable height
A cell having a plurality of substantially identical shapes and cavities, and one cell of the plurality of cells can accommodate another cell.
A heel structure characterized in that the one cell of the plurality of cells is provided with a fixing means for fixing the other cell in an extended state. The heel structure according to claim 1, wherein the plurality of cells have small dimensions so that the cells having the maximum dimensions can be stored in order. The heel structure according to claim 2, wherein the cell has the maximum dimension cell at the uppermost portion and extends downward. The heel structure according to claim 2 or 3, wherein the cell is a substantially cylindrical shape, and the fixing means includes a fitting portion that is fitted by rotating the cell during the extension. The heel structure according to any one of claims 2 to 4, wherein each of the cells has a central axis having a predetermined angle. Footwear having the heel structure according to any one of claims 1 to 5.
A footwear having a hole in a portion of the bottom where the heel structure is connected to extend the heel. Footwear with variable heel height
A bottom with a flexible part that deforms in response to changes in the height of the heel between the heel joint and the toe where the height-variable heel joins.
The instep toe that retains its shape with a hardness higher than the specified value,
The instep of the material whose hardness is lower than that of the instep toe,
Footwear provided with a storage means for accommodating a part of the side surface portion of the instep portion. The footwear according to claim 7, further comprising a tension applying means for applying tension to the side surface portion and accommodating a part of the side surface portion in the accommodating means. The footwear according to claim 7 or 8, wherein the heel portion has the heel structure according to any one of claims 1 to 5.