JP2023143568A - Footwear - Google Patents

Abstract

To provide a piece of footwear which can make comfort and outlook compatible, by simply deforming a sole to a shape that is suitable to a heel height in exchanging the heel with a different height.SOLUTION: A piece of footwear is provided with a shank (2) which is fastened in a manner that shaft rotation is possible with the longitudinal direction of the footwear as an axis in the sole central part (12). By the shaft rotation of the shank, an angle which is formed by the sole toe part (11) and the sole central part (12) viewed in the horizontal direction and an angle which is formed by the sole central part (12) and sole heel part (13) are variable respectively. The extension part (23) of the shank heel is housed in receiving parts (81g, 81h, 81c) for accepting the extension part of the shank heel which is provided at least in one of the sole heel part (13) and a heel (3). The sole (1) and the heel (3) are fastened by a heel fastening means and simultaneously the extension part (23) of the shank heel is fastened, with each angle of the sole also fastened.SELECTED DRAWING: Figure 8

Description

The present invention provides a shoe structure that achieves both a beautiful appearance and comfort by deforming the sole into a shape suitable for each of the heels of different heights, in a shoe that has a structure in which heels of different heights can be exchanged. Regarding.

Heeled shoes with a high heel look beautiful, but wearing them for long periods of time puts strain on the feet and tends to reduce comfort. Therefore, if you can replace your heels with heels of different heights, you can achieve both a beautiful appearance and comfort without having to change shoes while going out. Shoes that can be replaced with heels of different heights are already on the market, but most of them have a single sole shape and have multiple heels of different heights.

Normally, shoes have soles that match the height of the heel, and the shape and strength of each part of the sole differs depending on the height of the heel. For example, the higher the heel of the sole, the more the angle between the sole toe and the center of the sole, and the angle between the center of the sole and the heel of the sole can be maintained properly. The heel part is made of a hard material such as fiberboard (a hard board made of pulp fibers), and the inside contains a metal core called the shank.

If a sole with such structural characteristics is simply replaced with a heel of a different height like an existing product, the sole shape will not match the height of the heel, and the sole will not fit the foot, causing problems between the foot and the sole. A gap or local pressure may occur between the two. In addition, the part of the sole that makes contact with the ground deviates from the design, resulting in a loss of stability and comfort when walking.

This will be explained using FIGS. 9 to 11. Figures 9(a), (b), and (c) show the sole shapes and contact conditions of shoes with a low heel, a medium heel, and a high heel, respectively, and all contact the ground at a portion 96 near the metatarsal head. . Comparing the sole shape of a shoe with a high heel as shown in Figure 9(c) with the sole shape of a medium heel height as shown in Figure 9(b), the angle between the sole toe and the center of the sole is smaller. It has an acute downward angle. As shown in Figure 10, if a high heel is attached to a sole suitable for medium-heel heels, the part of the sole that makes contact with the ground, where the load of the foot should be applied, will be lifted, and the sole will not make contact with the ground as much as it should. It shifts further to the front of the shoe. For this reason, the sole is subject to an undesirably large load on the foot, and the weight and stress during walking act to greatly deform the part of the sole that makes contact with the ground, which may lead to damage.

On the other hand, when comparing the shape of the sole of a shoe with a low heel as shown in Figure 9(a) with the sole shape of a shoe with a medium heel height as shown in Figure 9(b), it is found that the shape of the sole toe and center of the sole is The angle is more obtuse downwards. As shown in Figure 11, when a low heel is attached to a sole suitable for a medium heel, the sole's contact with the ground will shift to the rear of the shoe from the original contact area, causing the tip of the shoe to rise above its original position. Therefore, the tip of the shoe deforms downward due to weight and stress during walking, which places a load on the sole.

Further, although the angle is smaller than the angle between the sole toe portion and the sole center portion, the appropriate angle between the sole center portion and the sole heel portion also differs between a high heel, a medium heel, and a low heel. In the case of the sole shape of a shoe with a high heel as shown in Figure 9(c), the angle between the center of the sole and the sole heel is more acute upward than the sole shape of a medium heel as shown in Figure 9(b). be. When a high heel is attached to a sole suitable for a medium heel as shown in Figure 10, the angle between the center of the sole and the heel of the sole is upwardly obtuse than the sole shape of the high heel, and the heel is positioned toward the front of the shoe. Becomes slippery.

In the case of the sole shape of a shoe with a low heel as shown in Fig. 9(a), the angle between the center of the sole and the sole heel part is upwardly obtuse than the sole shape of a medium heel as shown in Fig. 9(b). be. When a low heel is attached to a sole suitable for a medium heel as shown in Figure 11, the angle between the center of the sole and the sole heel is more acute upward than the sole shape of the low heel, and the center of the sole and the sole heel It's easy to feel like your feet are sticking out at the boundary between the legs, which can make you feel uncomfortable.

As described above, there are appropriate sole shapes for each selected heel height, and attempts have also been made to change the sole shape in response to changes in heel height.

Japanese Patent Application Publication No. 2011-234953 Utility model registration No. 3230390

Patent Document 1 discloses a shoe having a function of changing the height of the heel and the shape of the sole. The disclosed shoe includes a height variable means provided in the heel portion and a connecting plate slidably provided in the sole body, and the connecting plate slides in conjunction with changes in heel height. This allows the shape of the sole to be changed. In the invention according to Patent Document 1, a force is required to lift the sole toe portion upward in order to bend the angle formed by the sole toe portion and the sole center portion. However, since the connecting plate is built inside the sole and placed almost parallel to the sole, there is almost no upward vector to lift the sole toe when pulling, so a large force is required to lift the sole toe. There's a problem.
In addition, in the invention disclosed in Patent Document 1, when creating a high heel, in order to generate a force that makes the angle between the sole toe part and the sole center more acute downward, it is necessary to create a high heel between the bent part of the sole and the connecting plate. A distance (gap) in the width direction is required, and if the connecting plate is incorporated inside the sole, the sole needs to be thick. In addition, as the gap is used, the dimensions of the gap change and the connecting plate stretches, which may cause the length of the connecting plate to be pulled toward the heel and the resulting change in the angle of the sole toe to be inconsistent, which may impair practicality. There is a problem with missing parts.

According to the shoe disclosed in Patent Document 2, the shape of the shank is a linear curved member shaped to match the sliding motion that follows the arch of the shoe, and may simply be a solid steel bending plate. but is preferably made thinner and has a non-linear axial cross-section, with the entire shank sliding longitudinally relative to the sole in a cavity within the sole. The shank is secured by being screwed tightly by a lever. Alternatively, the range in which the block attached to the rear end of the shank is located is the range in which it slides in the longitudinal direction with respect to the sole, and the wedge protruding above the heel fits into this range to determine the position.
However, in the invention according to Patent Document 2, the shank is fixed by sliding in the longitudinal direction, thereby changing and fixing the angle between the sole toe part and the sole center part and the angle between the sole center part and the sole heel part. There is no mention of that. If the front end of the shank is fixed to the sole toe and the rear end of the shank is slid toward the rear heel side, the angle between the sole toe and the center of the sole becomes upwardly acute as in Patent Document 1. However, as in Patent Document 1, the gap between the shank near the bent part of the sole in the hollow inside the sole may cause the shank to be pulled toward the heel due to a slight change in dimension or elongation of the shank. There is a risk that the length of the sole toe and the resulting change in the angle of the sole toe may not be constant, making it impractical.

The present invention was made in view of the above-mentioned problems with the sole deformation mechanism of conventional shoes with adjustable heel height, and its basic purpose is to The sole can be easily transformed into a shape suitable for the height of the heel, creating a shoe that offers both comfort and appearance.

The present invention has been made to achieve the above object, and has the following features.
[1] A shoe that has a sole and a heel, and the heels of different heights can be replaced, wherein the sole consists of a sole toe part, a sole center part, and a sole heel part in order from the toe to the heel, and the sole has a sole center part, a sole center part, and a sole heel part. A shank is provided at a portion of the shoe for variably regulating the relative positional relationship between the sole toe portion and the sole center portion, the shank being rotatably fixed around the longitudinal direction of the shoe; a shank heel extension extending at a predetermined angle at a boundary portion; and a shank toe extension extending at a predetermined angle at a boundary between the sole center portion and the sole toe portion; A boundary between the sole center portion and the sole toe portion is bendable, and the sole toe portion includes a shank toe extension receiving portion that receives the shank toe extension portion and enables planar movement substantially along the sole surface; a heel having a receiving portion for receiving the shank heel extension;
Shoes characterized by:

[2] A shoe that has a sole and a heel, and the heels of different heights can be replaced, the sole consisting of a sole toe part, a sole center part, and a sole heel part in order from the toe to the heel, and the sole has a sole center part, a sole center part, and a sole heel part. a shank that is fixed to be rotatable about the longitudinal direction of the shoe and variably regulates the relative positional relationship between the sole center portion and the sole heel portion; a shank heel extension extending at a predetermined angle at a boundary between the sole central portion and the sole heel, the boundary between the sole center portion and the sole heel portion being bendable, and at least one of the sole heel portion and the heel; a receiving portion for receiving the shank heel extension;
Shoes characterized by:

[3] A shoe that has a sole and a heel, and the heels of different heights can be replaced, wherein the sole consists of a sole toe part, a sole center part, and a sole heel part in order from the toe to the heel, and the sole has a sole center part, a sole center part, and a sole heel part. a shank that is fixed rotatably about the longitudinal direction of the shoe at the part and variably regulates the relative positional relationship of the respective sole parts; a shank heel extension extending at a predetermined angle at a boundary between the sole center portion and the sole toe portion; A boundary portion of the sole toe portion, a boundary portion of the sole center portion, and the sole heel portion are bendable, and the sole toe portion has a shank that receives the shank toe extension portion and enables planar movement substantially along the sole surface. a toe extension receiving portion; a receiving portion receiving the shank heel extension on at least one of the sole heel portion and the heel;
Shoes characterized by:

[4] A state in which the shank heel extension part, which has a heel fixing means for fixing the heel to the sole, and which forms a predetermined angle from the boundary between the center part of the sole and the sole heel part, is housed in the receiving part. and the heel fixing means is formed so that the axial rotation of the shank is fixed.
The shoes described in [1] to [3], which are characterized by the following.

By having the above structure, the shoes of the present invention can easily transform and maintain the sole in a shape suitable for the heel height even if the shoe is replaced with a heel of a different height, making it comfortable to wear. You can have both sex and beautiful appearance. Furthermore, since the shank extends to the sole heel, it is advantageous in that the angle formed between the center of the sole and the sole heel can be appropriately changed. In addition, the one in which the shank extends until it touches the sole toe is excellent in that the angle formed between the sole toe and the center of the sole can be appropriately changed.

FIG. 3 is a side view of the entire sole before the heel is attached. FIG. 3 is a side cross-sectional view of the entire sole before the heel is attached. FIG. 3 is a plan view of the open sole toe portion, sole center portion, and shank. It is a top view of a sole toe part, a sole center part, and a shank. FIG. 3 is a side view of the shank. FIG. 3 is a side view of the entire sole with attached low heel; Figure 3 is a side view of the entire sole with a medium heel attached; FIG. 2 is a side cross-sectional view of the entire sole with a medium heel attached; FIG. 3 is a side view showing a sole shape suitable for the heel height and a ground contact state. (a) low heel, (b) medium heel, (c) high heel FIG. 3 is a side view showing the state of the sole in contact with the ground when a high heel is attached to a sole shape suitable for a medium heel. FIG. 3 is a side view showing the state of the sole in contact with the ground when a low heel is attached to a sole shape suitable for a medium heel. It is a bottom view which shows the positional relationship of a sole heel part, a joint part, and a shank suitable for a low heel. It is a side view which shows the positional relationship of a sole heel part, a joint part, and a shank suitable for a low heel. FIG. 3 is a perspective view showing a state in which the sole heel portion is bent upward by a hinge. FIG. 3 is a side cross-sectional view showing a state in which the sole heel portion is bent upward by a hinge. It is a perspective view showing the positional relationship of a sole heel part, a joint part, and a shank suitable for a low heel. It is a perspective view showing the positional relationship of a sole heel part, a joint part, a shank, and a low heel suitable for a low heel. FIG. 6 is a side cross-sectional view of the joint part fitted into the low heel. It is a bottom view which shows the positional relationship of a sole heel part, a joint part, and a shank suitable for a high heel. FIG. 3 is a side view showing the positional relationship between a sole heel portion, a shank, and a high heel suitable for a high heel. 21 is a side cross-sectional view of FIG. 20; FIG. 21 is a sectional view taken along line AA in FIG. 20. FIG. FIG. 3 is a perspective view of a low heel. FIG. 2 is a perspective view of a high heel. It is a side view which shows the state where a sole heel part is bent upward by a hinge. Figure 26 is a side view of the shank heel extension of Figure 25 inserted into the lower heel receptacle; FIG. 27 is a cross-sectional view of FIG. 26; FIG. 28 is a perspective view of FIG. 27; FIG. 7 is a side view of the entire sole before attachment of another heel. It is a perspective view which shows the positional relationship of a sole heel part, a joint part, and a shank in the case of attaching a low heel. It is a perspective view which shows the positional relationship of a sole heel part, a joint part, and a shank in the case of attaching a high heel. FIG. 6 is a perspective view of another low heel. FIG. 6 is a side cross-sectional view of another low heel; FIG. 6 is a perspective view of another high heel. FIG. 7 is a perspective view of another low heel. FIG. 7 is a perspective view of yet another low heel. FIG. 3 is a side view of the entire sole with another medium heel attached; It is a side view of the whole sole before attachment of another heel. FIG. 7 is a side cross-sectional view of the entire sole before another heel is attached. FIG. 7 is a side cross-sectional view of the entire sole with another medium heel attached; FIG. 3 is a side view of another shank.

Embodiments will be described below with reference to the drawings. Here, we will explain an example in which the angle of both the sole toe part and the sole heel part is changed with respect to the center part of the sole. Even if the section is carried out using another method, it can be carried out in accordance with this method.
As shown in FIG. 1, the sole 1 is broadly divided into a sole toe portion 11, a sole central portion 12, and a sole heel portion 13, and is bendable at the boundary of each. The sole 1 is a general term for a combination of a main part 112 constituting a sole toe part and a sole central part, an upper part 122 of the sole central part, and a sole heel part 13, and the heel can be attached and removed as a separate part. A slit 91s is provided at the boundary between the sole toe portion 11 and the sole central portion 12, and a hinge 92h is provided at the boundary between the sole central portion 12 and the sole heel portion 13, making it easy to bend at any angle. . In this description, the slit 91s and the hinge 92h are used as bendable means, but the invention is not limited to these means.

The shank 2 is basically a rod-shaped hard material, and is incorporated inside the sole as shown in FIGS. 2 to 4. As shown in FIG. 5, the shank 2 includes a shank toe extension 21, a shank center 22, and a shank heel extension 23, each of which is bent at an adjacent boundary. Therefore, by rotating the shank 2 in the circumferential direction around the shank center portion 22 (hereinafter referred to as “rotation”), the shank toe extension portion 21 and the shank center portion 22 form the same shape when viewed from the horizontal direction. The angle and the angle formed by the shank central portion 22 and the shank heel extension portion 23 vary.

3 and 4 are drawings with the sole heel portion 13 removed for ease of explanation. Only the positional relationship between the sole toe portion 11, the sole center portion 12, and the shank 2 will be explained using this figure.
The shank center portion 22 is fixed to the sole center portion 12 in a rotatable state around the longitudinal direction of the shoe, and the shank toe extension portion 21 is accommodated in a shank toe extension portion receiving portion 93g provided in the sole toe portion 11. ing. The shank toe extension receiving part 93g in which the shank toe extension 21 is accommodated has a gap (space) that allows the shank toe extension 21 to move within a certain range. Although the shank toe extension 21 has a width sufficient to move within a predetermined range in the horizontal direction, it has a height in the vertical direction that is only slightly larger than the shank diameter, as shown in FIG. Therefore, among the movements of the shank toe extension part 21 caused by the rotation of the shank 2, the horizontal movement is absorbed by the horizontal width of the shank toe extension part receiving part 93g, while the movement in the vertical direction is absorbed by the shank toe extension part 21. The angle between the part 21 and the shank center part 22 when viewed from the horizontal direction is changed, and the angle between the sole toe part 11 and the sole center part 12 is appropriately changed.

Hereinafter, a method for rotating the shank 2 will be described with reference to FIGS. 1 and 2. The shank toe extension portion 21 is housed in a shank toe extension receiving portion 93g provided in the sole toe portion 11, and the shank center portion 22 is rotatably fixed to the sole center portion 12. The shank heel extension part 23 is housed in at least one of the sole heel part 13 and the heel 3 when the heel is attached, but is exposed (at least in part) before the heel is attached. The shank 2 can be rotated by moving the shank heel extension 23 by hand or by bending or extending the sole toe part 11 and the sole center part 12 by hand. However, the angle formed by the shank toe extension part 21 and the shank central part 22 when viewed from the horizontal direction changes, and the angle formed by the sole toe part 11 and the sole central part 12 changes.

In addition, by moving the exposed shank heel extension part 23 by hand, or by bending or extending the sole toe part 11 and sole center part 12 by hand, the shank 2 is also rotated in conjunction with the horizontal direction. The angle between the shank central portion 22 and the shank heel extension 23 when viewed from above changes, and the angle of the shank heel extension 23 when viewed from above changes from the boundary with the shank central portion 22 as shown in FIG. A receiving portion 81 that receives the shank heel extension 23 at different positions is provided on at least one of the sole heel portion 13 and the heel 3 in response to the different angles of the shank heel extension 23 depending on the height of the heel to be attached. . The receiving portion 81 may be a groove provided according to the heel height such as 81g illustrated in FIGS. 14 and 15 or 81c illustrated in FIGS. A similarly provided hole such as 81h illustrated in 24 may also be used. Of course, it is not limited to these. By storing the shank heel extension part 23 in the receiving part (81g, 81h, 81c) provided in at least one of the sole heel part 13 and the heel 3 at different positions, the sole toe part 11 and the sole seen from the horizontal direction are The angle formed by the center portion 12 changes to an angle that matches the height of the heel to be attached next, and the heel is positioned.

As a means for fixing the rotation of the shank 2, the shank heel extension part 23 is positioned by being accommodated in a receiving part (81g, 81h, 81c) provided in at least one of the sole heel part 13 and the heel 3, It is fixed by fixing the heel to the sole.
As a heel fixing means for fixing the heel to the sole, for example, a joint part 4 using a lock pin for fixing the heel is installed in the sole heel part 13, and a recess 94h that fits into the joint part is installed in the heel 3. The shank heel extension part 23 is housed in the receiving part (81g, 81h, 81c) provided in at least one of the sole heel part 13 and the heel 3 at different positions, and the joint part 4 is fitted with the heel, so that the horizontal The angle formed between the sole central part 12 and the sole heel part 13 when viewed from the direction changes to an angle that matches the height of the heel to be attached next, and the position is determined.
When the heel 3 and the sole heel part 13 are fixed by the joint part 4 installed in the sole heel part 13 fitting with the heel, the receiving part (81g , 81h, 81c) is fixed, and the angle between the sole toe section 11 and the sole center section 12 and the angle between the sole center section 12 and the sole heel section 13 are also fixed. FIG. 6 is a side view of the sole with a low heel and FIG. 7 is a side view of the sole with a medium heel, showing the shape of the sole suitable for the heel height.
Three preferred ways in which the shank heel extension 23 is positioned and fixed are shown below.

A preferred manner in which the shank heel extension 23 is positioned and fixed will be described using FIGS. 12 to 22. FIG. 12 is a diagram showing the positional relationship between the sole heel part 13, joint part 4, and shank 2 suitable for the low heel 3l shown in FIG. By fitting into one of the receiving parts 81g, the angle formed by the shank toe extension part 21 and the shank center part 22 and the position of the sole heel part 13 as seen from the horizontal direction as shown in FIG. 13 are in a state suitable for the height of the heel. becomes. A plurality of receiving parts 81g are installed so that the angle formed by the sole toe part 11 and the sole central part 12 and the angle formed by the sole central part 12 and the sole heel part 13 are angles suitable for a plurality of heel heights. . As mentioned above, the angle between the sole toe section 11 and the sole center section 12 and the angle between the sole center section 12 and the sole heel section 13 when viewed from the horizontal direction differ depending on the height of the heel. The angle formed between the shank toe extension 21 and the shank central portion 22 and the angle formed between the shank central portion 22 and the shank heel extension 23 are also different. The rotation angle of the shank 2 differs depending on the height of the heel, and the position of the shank heel extension 23 also differs. In order to fix the shank heel extension 23 whose position changes depending on the heel height, the position of the receiving part 81g in FIGS. 12, 14, 16, 19, and 22 is the shank heel extension whose position changes depending on the heel height. It is installed at a plurality of different positions according to the section 23.

Here, as an example of a heel fixing means for fixing the heel to the sole, an example of the joint portion 4 using a lock pin will be described. As shown in FIGS. 14 and 15, a lock pin 5 is arranged in the joint part 4 installed in the sole heel part 13 so that the front end of the lock pin 5 projects toward the front of the shoe. As shown in FIGS. 18 and 21, the heel (3l, 3h) has a recess 94h for housing the joint portion 4, and a hole 95h into which the front end of the lock pin 5 fits is bored in the inner surface of the recess 94h. The lock pin 5 is urged forward of the shoe by the spring member 6, and its front end fits into the hole 95h, thereby maintaining the fixation of the heel (3l, 3h) to the sole heel portion 13. When removing the heel, the front end of the lock pin 5 is pushed into the joint part 4 to release the fitting with the hole part 95h. In this description, the joint portion 4 of the type that urges the lock pin 5 forward is used, but the present invention is not limited to this.

Next, an example of how the rotation angle of the shank 2 is fixed will be described with reference to FIGS. 14 and 15. First, the boundary between the upper part 122 at the center of the sole and the sole heel section 13 is connected by a hinge 92h. By fitting the shank heel extension part 23 into the receiving part 81g provided in the sole heel part 13, the rotation angle of the shank 2 is determined, and the heel (3h, 3l) and the joint part 4 provided in the sole heel part 13 are connected. By fitting, the heel 3 is fixed to the sole 1, the exposed part of the shank heel extension 23 fitted in the receiving part 81g is covered by the heel 3, and the shank heel extension 23 is connected to the shank central part 22. Since there is an angle from the boundary, the rotation angle of the shank 2 is also fixed. As a result, the position of the receiving part 81g into which the shank heel extension part 23 fits is installed at a plurality of different positions according to the shank heel extension part 23, which changes depending on the heel height, and at different angles from the movable direction of the hinge 92h. If there is, the shank heel extension part 23 will not come off and separate from the receiving part 81g, restricting the movement of the hinge 92h, and adjusting the angle between the sole toe part 11 and the sole center part 12 when viewed from the horizontal direction by the shank 2, and the sole center. The angle formed by the portion 12 and the sole heel portion 13 is fixed.

When changing from a high heel 3h (Figs. 20, 21) to a low heel 3l (Fig. 17, 18), or from a low heel 3l to a high heel 3h, remove the heel 3 as described above, and When the sole heel part 13 is bent upward within the movable range of the hinge 92h as shown in 15, the shank heel extension part 23 comes off the receiving part 81g and becomes movable, so move the shank heel extension part 23 by hand or Bending or stretching the sole toe part 11 and sole center part 12 by hand or the like to make an angle suitable for the height of the next heel to be attached, and fit the shank heel extension part 23 into another receiving part 81g of the sole heel part 13 again. Attach the heel 3 of the same height to the joint part 4. 19 and 22 show the position of the shank heel extension 23 that fits into the receiving part 81g when a high heel 3h is fitted, but when a low heel 3l is fitted, the shank heel extension 23 is placed in a different position as shown in Fig. 12. The shank heel extension 23 is fitted.

Another preferred manner in which the shank heel extension 23 is positioned and fixed will be described with reference to FIGS. 23 to 28. By fitting the shank heel extension part 23 into the hole-shaped receiving part 81h of the heel and fitting the joint part 4 protruding from the sole heel part 13 into the recessed part 94h of the heel, the shank toe extension part 21 and the center of the shank as seen from the horizontal direction are The angle formed by the portion 22 and the angle formed between the sole central portion 12 and the sole heel portion 13 are suitable for the height of the heel.
As mentioned above, the angle between the sole toe section 11 and the sole center section 12 and the angle between the sole center section 12 and the sole heel section 13 when viewed from the horizontal direction differ depending on the height of the heel. The angle formed between the shank toe extension 21 and the shank central portion 22 and the angle formed between the shank central portion 22 and the shank heel extension 23 are also different.
The rotation angle of the shank 2 differs depending on the height of the heel, and the position of the shank heel extension 23 also differs. In order to fix the shank heel extension 23 whose position changes depending on the heel height, the positions of the receiving parts 81h of the low heel 3l and high heel 3h shown in FIGS. 23 and 24 are arranged to match the shank heel extension 23. has been done.

FIG. 25 shows this state before the heel 3 is fitted into the shank heel extension 23. The upper part 122 of the sole central part and the sole heel part 13 are connected by a hinge 92h, and the shank heel extension part 23 is exposed from the rear end of the sole central part 12. By fitting the shank heel extension part 23 into the receiving part 81h of the heel 3, the rotation angle of the shank 2 is determined, and by fitting the joint part provided in the heel 3 and the sole heel part 13, the heel 3 is attached to the sole 1. Since the shank heel extension part 23 is at an angle from the boundary with the shank central part 22, the rotation angle of the shank 2 is also fixed, and the angle between the sole toe part 11 and the sole central part 12 when viewed from the horizontal direction and the sole The angles formed by the central part 12 and the sole heel part 13 change, and the sole 1 is held in a shape suitable for the height of the heel.
The heels 3l and 3h shown in FIGS. 23 and 24 are provided with recesses 94h in which the joint portions 4 are accommodated, and the joint portions 4 are protruded from the sole heel portion 13 so as to fit in the recesses 94h.

When attaching the heel, bend the sole heel portion 13 upward within the movable range of the hinge 92h as shown in Fig. 25, move the shank heel extension portion 23 by hand, or move the sole toe portion 11 and sole center portion 12 by hand. 26, 27, and 28, fit the shank heel extension part 23 into the receiving part 81h of the next heel to be installed, and then bend or extend it by 13 is lowered along the movement of the hinge 92h, and the joint portion 4 protruding from the sole heel portion 13 is fitted into the heel recess 94h.
To remove the heel, push the front end of the lock pin 5 into the joint part 4 to release it from the hole 95h, bend the sole heel part 13 upward within the movable range of the hinge 92h, and remove the shank heel. The heel is removed along the axial direction of the receiving part 81h into which the extension part 23 is fitted.

The position of the heel receiving part 81h is arranged differently for each heel in accordance with the shank heel extension part 23 whose position changes depending on the heel height, and if the angle is different from the direction in which the hinge 92h moves, the shank heel extension part 23 does not slip out and separate from the heel receiving portion 81h, and restricts the movement of the hinge 92h. The angle is fixed.

Another preferred manner in which the shank heel extension 23 is positioned and fixed will be described using the sole shown in FIGS. 1 and 2, the heel shown in FIGS. 32 to 34, and the sole with attached heel shown in FIG. 8. do.
As shown in FIGS. 32, 33, and 34, a groove-shaped receiving portion 81c is provided at the upper part of the heel. As described above in the preferred embodiment and other preferred embodiments, the rotation angle of the shank 2 differs depending on the heel height, and the position of the shank heel extension 23 also differs. In order to fix the shank heel extension 23 whose position changes depending on the heel height, the positions of the receiving parts 81c of the low heel 3l and high heel 3h are arranged to match the shank heel extension 23.

1 and 2 show the sole before the heel is attached, and FIG. 8 shows the sole with the heel attached. The rotation angle of the shank 2 is determined by fitting the shank heel extension part 23 into the receiving part 81c at the upper part of the heel, and by fitting the heel (3h, 3l) with the joint part 4 provided on the sole heel part 13, the heel 3 is fixed to the sole 1, the exposed part of the shank heel extension 23 fitted in the receiving part 81c is covered by the sole heel part 13, and the shank heel extension 23 is angled away from the boundary with the shank central part 22. Therefore, the rotation angle of the shank 2 is also fixed. The position of the receiving part 81c into which the shank heel extension part 23 fits is arranged differently for each heel in accordance with the shank heel extension part 23, which changes position depending on the heel height, and if it is at a different angle from the direction in which the hinge 92h moves. , the shank heel extension part 23 does not come out and separate from the receiving part 81c, restricts the movement of the hinge 92h, and the angle between the sole toe part 11 and the sole central part 12 when viewed from the horizontal direction by the shank 2 and the sole central part 12. The angle formed between the sole heel portion 13 and the sole heel portion 13 is fixed.
When attaching the heel, as described above in a suitable manner or another preferable manner, the sole is set at an angle suitable for the height of the next heel to be attached, and the sole heel portion 13 is bent upward within the movable range of the hinge 92h. Next, fit the shank heel extension part 23 into the heel receiving part 81c to be attached, lower the sole heel part 13 along the movement of the hinge 92h, and insert the joint part 4 protruding from the sole heel part 13 into the heel recess 94h. Fit it. When removing it, the lock pin 5 is disengaged from the hole 95h in a suitable manner or in another suitable manner as described above.

Next, a description will be given of the sole 1 shown in FIG. 29, the positional relationship between the sole heel portion 13, joint portion 4a, and shank 2 shown in FIGS. 30 and 31, and the heel 3l shown in FIGS. 35 and 36. The difference between the sole shown in FIGS. 1 and 2, the heel shown in FIGS. 32 to 34, and the sole with a heel shown in FIG. , the shank heel extension 23 moves relative to the sole heel 13.
The gap 42 in which the shank heel extension 23 shown in FIGS. 29, 30, and 31 fits has a width in the horizontal direction that allows the shank heel extension 23 to move within a predetermined range, and a width in the vertical direction. has a height only slightly larger than the shank diameter. When the shank 2 rotates, the angle between the shank toe extension 21 and the shank center 22 and the angle between the shank center 22 and the shank heel extension 23 change as seen from the horizontal direction. The angle formed between the sole toe portion 11 and the sole central portion 12 and the angle formed between the sole central portion 12 and the sole heel portion 13 change.

As shown in FIG. 36, the upper receiving part 81c of the heel 3l into which the shank heel extension part 23 fits is located both in the front and the rear, straddling the heel recess 94h. In addition, in the case of the joint part 4a in which the rear end of the shank heel extension part 23 fits inside the gap 42 and the rear end is not exposed, there is a receiving part at the upper part of the heel 3l into which the shank heel extension part 23 fits, as shown in FIG. 81c is located in front of the heel.
When attaching a heel, it is the same as above, but if the sole is set at an angle suitable for the height of the next heel to be attached, the shank heel extension part 23 and sole heel part 13 will move relative to each other, making it suitable for attaching the next heel. At the same time, the joint part 4a is fitted into the recess 94h of the heel to be attached, and the shank heel extension part 23 is fitted into the receiving part 81c.

Receiving portions (81g, 81h, 81c) in which the shank heel extension 23 is accommodated are shown for preferred embodiments, preferred alternative embodiments, and other preferred embodiments in which the shank heel extension 23 is positioned and fixed. However, the receiving part in which the shank heel extension part 23 is accommodated is not limited to each aspect, and a means of combining them may be used. Furthermore, although the joint portions (4, 4a) for fixing the heel are of the type that urges the lock pin 5 forward, the present invention is not limited thereto.

Here, an example in which the angle of only the sole toe portion of another embodiment is changed will be described using a sole shown in FIGS. 38 and 39, a heel shown in FIGS. 32 to 34, and a sole to which the heel shown in FIG. 37 is attached.
As shown in FIGS. 37 to 39, the sole 1 is broadly divided into a sole toe portion 11, a sole central portion 12, and a sole heel portion 13, and is bendable at the boundary between the sole toe portion 11 and the sole central portion 12. . Sole 1 is a general term for a combination of the main part 112 that constitutes the sole toe part and the sole center part, and the integrated part 122a of the sole center part and sole heel part, and the sole heel part 13 is the combination of the main part 112 that constitutes the sole toe part and the sole center part, and the sole heel part 13. The heel is a separate part and can be removed. A slit 91s is provided at the boundary between the sole toe portion 11 and the sole central portion 12, making it easy to bend at any angle. In this description, the slit 91s is used as a bendable means, but it is not limited to this means. In the above-described example in which the angles of both the sole toe portion and the sole heel portion are changed with respect to the sole center portion, a hinge 92h is provided at the boundary between the sole center portion 12 and the sole heel portion 13. In the example in which the angle is changed, as shown in FIGS. 37 and 38, the boundary between the sole heel portion 13 and the sole center portion 12 is not bent and is integral, so the embodiment in that case will be described below. .

The shank 2 is basically a rod-shaped hard material and is incorporated inside the sole. As shown in FIG. 5, the shank 2 includes a shank toe extension 21, a shank center 22, and a shank heel extension 23, each of which is bent at an adjacent boundary. Therefore, by rotating the shank 2 in the circumferential direction around the shank center portion 22 (hereinafter referred to as “rotation”), the shank toe extension portion 21 and the shank center portion 22 form the same shape when viewed from the horizontal direction. The angle and the angle formed by the shank central portion 22 and the shank heel extension portion 23 vary.

3 and 4 are drawings with the sole heel portion 13 removed for ease of explanation. In the explanation here, since the boundary between the sole central part 12 and the sole heel part 13 is not bent and is integral, only the positional relationship between the sole toe part 11, the sole central part 12, and the shank 2 will be explained in this figure. I will explain.
The shank center portion 22 is fixed to the sole center portion 12 in a rotatable state around the longitudinal direction of the shoe, and the shank toe extension portion 21 is accommodated in a shank toe extension portion receiving portion 93g provided in the sole toe portion 11. ing. The shank toe extension receiving part 93g in which the shank toe extension 21 is accommodated has a gap (space) that allows the shank toe extension 21 to move within a certain range. Although the shank toe extension 21 has a width sufficient to move within a predetermined range in the horizontal direction, it has a height in the vertical direction that is only slightly larger than the shank diameter, as shown in FIG. Therefore, among the movements of the shank toe extension part 21 caused by the rotation of the shank 2, the horizontal movement is absorbed by the horizontal width of the shank toe extension part receiving part 93g, while the movement in the vertical direction is absorbed by the shank toe extension part 21. The angle between the part 21 and the shank center part 22 when viewed from the horizontal direction is changed, and the angle between the sole toe part 11 and the sole center part 12 is appropriately changed.

Hereinafter, a method for rotating the shank 2 will be described with reference to FIG. 39. The shank toe extension portion 21 is housed in a shank toe extension receiving portion 93g provided in the sole toe portion 11, and the shank center portion 22 is rotatably fixed to the sole center portion 12. The shank heel extension 23 is housed in the heel during heel attachment, but is exposed (at least in part) before attachment. The shank 2 can be rotated by moving the shank heel extension 23 by hand or by bending or extending the sole toe part 11 and the sole center part 12 by hand. However, the angle formed by the shank toe extension part 21 and the shank central part 22 when viewed from the horizontal direction changes, and the angle formed by the sole toe part 11 and the sole central part 12 changes.

In addition, by moving the exposed shank heel extension part 23 by hand, or by bending or extending the sole toe part 11 and sole center part 12 by hand, the shank 2 is also rotated in conjunction with the horizontal direction. The angle between the shank central portion 22 and the shank heel extension 23 when viewed from above changes, and the angle of the shank heel extension 23 when viewed from above changes from the boundary with the shank central portion 22 as shown in FIG. The groove-shaped receiving portion 81c shown in FIGS. 32 to 34 receives the shank heel extension 23 at different positions in response to the different angles of the shank heel extension 23 depending on the height of the heel to be installed. They are placed in different positions depending on the weather. By storing the shank heel extension part 23 at different positions in the receiving part 81c provided in the heel (3l, 3h) as shown in FIGS. 32 to 34, the sole toe part 11 and the sole center seen from the horizontal direction are The angle formed by the part 12 changes to an angle that matches the height of the heel to be attached next, and the heel is positioned.

As a means for fixing the rotation of the shank 2, the shank heel extension part 23 is positioned by being accommodated in the receiving part 81c at the upper part of the heel shown in FIGS. 32 to 34, and is fixed by fixing the heel to the sole. Ru.
As a heel fixing means for fixing the heel to the sole, for example, as shown in FIGS. 38 and 39, a joint part 4 using a lock pin 5 for fixing the heel to the sole heel part 13 is installed, and the heel (3l, 3h) is fixed to the heel (3l, 3h). A recess 94h that fits into the joint portion is installed. When the heel (3l, 3h) and sole heel part 13 are fixed by fitting the joint part 4 installed in the sole heel part 13 with the heel, the shank heel extension part 23 fitted in the receiving part 81c is fixed. In addition, the angle formed between the sole toe portion 11 and the sole center portion 12 is also fixed.
The manner in which the shank heel extension part 23 is positioned and fixed is different from the above-described example in which the angles of both the sole toe part and the sole heel part are changed with respect to the central part of the sole. However, in this example where only the angle of the sole toe portion is changed, the boundary portion between the sole heel portion 13 and the sole center portion 12 is not bent and is integrated, so the sole heel portion 13 is not bent upward. When attaching a heel, the sole is set at an angle suitable for the height of the next heel to be attached, and the joint part 4 is fitted into the recess 94h of the next heel to be attached, and the shank heel extension part 23 is fitted into the receiving part 81c. When removing it, the lock pin 5 is disengaged from the hole 95h as described above.

Although the joint portion 4 for fixing the heel is of the type that urges the lock pin 5 forward, the present invention is not limited thereto.

Here, a further example will be described in which the angle of only the sole heel portion is changed and the sole toe portion is changed using a different method.
As shown in FIG. 40, the sole 1 is broadly divided into a sole toe portion 11, a sole central portion 12, and a sole heel portion 13, and is bendable at the boundary of each. The sole 1 is a general term for a combination of the main part 112b forming the sole toe part and the sole center part, the upper part 122b of the sole center part, and the sole heel part 13, and the heel is a separate part and can be removed. A slit 91s is provided at the boundary between the sole toe portion 11 and the sole central portion 12, and a hinge 92h is provided at the boundary between the sole central portion 12 and the sole heel portion 13, making it easy to bend at any angle. . In this description, the slit 91s and the hinge 92h are used as bendable means, but the invention is not limited to these means.

The shank 2b is basically a rod-shaped hard material, and is incorporated inside the sole as shown in FIG. 40. As shown in FIG. 41, the shank 2b consists of a shank central portion 22b and a shank heel extension portion 23b, which are bent at adjacent boundary portions. Therefore, by pivoting the shank 2b in the circumferential direction around the shank central portion 22b (hereinafter referred to as "rotation"), the shank central portion 22b and the shank heel extension portion 23b as seen from the horizontal direction are formed. The angle changes.

Hereinafter, a method for rotating the shank 2b will be described with reference to FIG. 40. The shank center portion 22b is fixed to the sole center portion 12 in a rotatable manner about the longitudinal direction of the shoe. In addition, by moving the exposed shank heel extension 23b by hand, the angle between the shank central part 22b and the shank heel extension 23b seen from the horizontal direction changes, and the shank heel extension 23b seen from above changes. The angle changes from the boundary with the shank center portion 22b. A receiving part 81 that receives the shank heel extension part 23b at different positions is installed in at least one of the sole heel part 13 and the heel 3 in response to the difference in the angle of the shank heel extension part 23b that varies depending on the height of the heel to be attached. . The receiving portion 81 may be a groove provided according to the heel height such as 81g illustrated in FIGS. 14 and 15 or 81c illustrated in FIGS. A similarly provided hole such as 81h illustrated in 24 may also be used. Of course, it is not limited to these. By storing the shank heel extension part 23b at different positions in the receiving parts (81g, 81h, 81c) provided in at least one of the sole heel part 13 and the heel 3, the shank central part 22b and The angle formed by the shank heel extension part 23b changes to determine the position.

As a means for fixing the rotation of the shank 2b, the shank heel extension part 23b is positioned by being accommodated in a receiving part (81g, 81h, 81c) provided in at least one of the sole heel part 13 and the heel 3, It is fixed by fixing the heel to the sole.
As a heel fixing means for fixing the heel to the sole, for example, a joint part 4 using a lock pin for fixing the heel is installed in the sole heel part 13, and a recess 94h that fits into the joint part is installed in the heel 3. The shank heel extension part 23b is housed in the receiving part (81g, 81h, 81c) provided in at least one of the sole heel part 13 and the heel 3 at different positions, and the joint part 4 is fitted with the heel, so that the horizontal The angle formed between the sole central part 12 and the sole heel part 13 when viewed from the direction changes to an angle that matches the height of the heel to be attached next, and the position is determined.
When the heel 3 and the sole heel part 13 are fixed by the joint part 4 installed in the sole heel part 13 fitting with the heel, a receiving part (81g, 81h, 81c) is fixed, and the angle formed between the sole central portion 12 and the sole heel portion 13 is also fixed.
The manner in which the shank heel extension part 23b is positioned and fixed is similar to the example in which the angles of both the sole toe part and the sole heel part are changed with respect to the center part of the sole in the embodiment described above. A preferred embodiment, another preferred embodiment, and another preferred embodiment are similar to the other preferred embodiment, but the shank toe extension portion 21 and the shank toe extension receiving portion 93g are absent, and the angle between the sole toe portion 11 and the sole central portion 12 is There is no change.

Regarding preferred embodiments, preferred alternative embodiments, and other preferred embodiments in which the shank heel extension 23b is positioned and fixed, the receiving portions (81g, 81h, 81c) in which the shank heel extension 23b is accommodated are each The embodiments are not limited, and a combination of them may be used. In addition, although a type in which the lock pin 5 is biased forward is used for the joint part (4, 4a) for fixing the heel, the present invention is not limited to this.

Embodiment, Other Embodiments, and Still Other Embodiments Although only the basic elements of the shank 2 and shank 2b have been explained, additional bending and bending are added to prevent them from coming off from the sole and to strengthen the fixation with the heel. It is not limited to this shape as it can also be processed.

1 Sole 11 Sole toe part 12 Sole central part 13 Sole heel part 112 Main part 112b that constitutes the sole toe part and sole central part 122 Main part that constitutes another sole toe part and sole central part 122 Upper part of sole central part 122a Sole central part and sole heel part integrated part 122b Another upper part of the sole central part 2 Shank 21 Shank toe extension part 22 Shank central part 23 Shank heel extension part 2b Another shank 22b Another shank central part 23b Another shank heel extension Section 3 Heel 3l Low heel 3m Medium heel 3h High heel 4 Joint section 4a Another joint section 41 Lid 41a of joint section 4 Lid 42 of joint section 4a Gap between joint section 4a 5 Lock pin 6 Spring member 7 Shank toe extension Receptacle 81g provided in the sole heel Receptacle 81h provided in the heel Receptor 91s provided in the upper part of the heel Slit 92h Hinge 93g Shank toe extension receptacle 94h provided in the sole toe Joint Recess 95h where the lock pin 5 is stored Hole 96 where the lock pin 5 is stored Ground contact area of the sole

Claims (4)

A shoe having a sole and a heel, the heels of different heights being replaceable,
The sole consists of a sole toe portion, a sole center portion, and a sole heel portion in order from the toe to the heel,
a shank fixed to the center of the sole so as to be rotatable about the longitudinal direction of the shoe and variably regulating the relative positional relationship between the sole toe and the center of the sole;
The shank includes a shank heel extension extending at a predetermined angle at a boundary between the sole center portion and the sole heel portion, and a predetermined angle forming a predetermined angle at a boundary between the sole center portion and the sole toe portion. a shank toe extension extending from the shank toe;
A boundary between the sole center portion and the sole toe portion is bendable;
The sole toe portion includes a shank toe extension receiving portion that receives the shank toe extension and enables planar movement substantially along the sole surface;
a receiving portion in the heel for receiving the shank heel extension;
Shoes characterized by: A shoe having a sole and a heel, the heels of different heights being replaceable,
The sole consists of a sole toe portion, a sole center portion, and a sole heel portion in order from the toe to the heel,
a shank fixed to the sole central portion so as to be rotatable around the longitudinal direction of the shoe and variably regulating the relative positional relationship between the sole central portion and the sole heel portion;
The shank has a shank heel extension extending at a predetermined angle at a boundary between the sole center portion and the sole heel portion,
A boundary between the sole center portion and the sole heel portion is bendable;
at least one of the sole heel portion and the heel includes a receiving portion for receiving the shank heel extension;
Shoes characterized by: A shoe having a sole and a heel, the heels of different heights being replaceable,
The sole consists of a sole toe portion, a sole center portion, and a sole heel portion in order from the toe to the heel,
a shank fixed in the center of the sole so as to be rotatable about the longitudinal direction of the shoe and variably regulating the relative positional relationship of the respective sole parts;
The shank includes a shank heel extension extending at a predetermined angle at a boundary between the sole center portion and the sole heel portion;
a shank toe extension extending at a predetermined angle at a boundary between the sole center portion and the sole toe portion;
A boundary between the sole central portion and the sole toe portion and a boundary between the sole central portion and the sole heel are bendable;
The sole toe portion includes a shank toe extension receiving portion that receives the shank toe extension and enables planar movement substantially along the sole surface;
at least one of the sole heel portion and the heel includes a receiving portion for receiving the shank heel extension;
Shoes characterized by: comprising a heel fixing means for fixing the heel to the sole;
The shaft rotation of the shank is fixed by the heel fixing means when the shank heel extension part forming a predetermined angle from the boundary between the sole center part and the sole heel part is housed in the receiving part. is formed in
Shoes according to claims 1 to 3, characterized in that:

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