JPH0685722B2 - Girth adjustable shoe bottom - Google Patents

Description

BACKGROUND OF THE INVENTION In order for a shoe to fit properly on a foot, the length, width, and
And the size of the girth must all be correct. In particular, the part that wraps around the front of the foot should substantially match the size, width, and size of the girth of the foot. In the text, "garth size" refers to the circumference of the front part of the foot measured in the left-right direction. “Girth size” is the size of the most important point for a shoe to fit on a foot and is usually measured along the groin, neck, or instep of the big toe. Therefore, in shoes, it refers to the inner circumference of the shoe where the girth of the foot hits.

The length and width of the feet are different for each person, and it is ideal to buy shoes with the length and width that suits each foot. And it is desirable to be able to select 9 to 10 shoe widths for one shoe size. In addition, according to the expansion and contraction of the upper part (all parts above the bottom), and also according to the thickness of the shoe sole, make sure to fit the circumference of the toe of the big toe, which is the part where the joint bends, by yourself. It is necessary to have means for adjusting the shoe width. The size of the foot changes variously depending on physiological phenomena. For example, in the daytime, the foot width is expanded by one to two sizes compared to nighttime. This is because water accumulates in the feet. This phenomenon occurs due to warm and humid climates, when flying, and due to illness and other injuries such as enlarged legs.

However, in reality, 90% of shoes are produced in large quantities, and it is considered uneconomical to manufacture one or more shoe widths for one shoe size. Has been. This is because the number of stocks at the retail level increases when the type of shoe width increases. And in the shoe industry in general,
It is believed that it is better to increase the number of styles than the number of shoe widths. Therefore, the person who has a leg that does not fit the width of the ready-made shoe has a limited choice of shoes. High-end shoe stores and mail order companies have good inventory management, so if you don't fit ordinary shoes, you have to buy shoes that suit you or purchase through mail order at a relatively expensive store. I won't. But it's still difficult to find shoes that you like.

Because of these circumstances, it is generally accepted that shoes that fit the foot are rather rare.
In particular, the groin around the base of the big toe is a delicate and important part because it has a joint used when walking with a large thigh, and it is not possible to perform sufficient girth adjustment with shoelaces or similar means.

The invention of US Pat. No. 3,442,031 adjusts girth by increasing the height of the insole. However, this invention has not been commercialized because the original tread surface (the vertical area of the portion where the shoe touches the ground or the floor) based on the shoe mold may collapse. Also, since the girth size is usually different between the left and right feet, if the girth adjustment is performed in this way, the distance between the ground and the foot will further differ between the left and right. This is dangerous because it may deform the legs, knees, hips, spine, and jaws.

The girth size is largely dependent on the type of surface supporting the foot and the present invention is based on this finding. On hard, flat surfaces such as the floor, the girth size maximizes. On the contrary, the girth size is reduced to a minimum on sand that is hard but deforms according to the shape of the foot. Also, the girth size is that the foot is moving, or
There are various changes depending on the stopped state, and the size of the foot width changes accordingly. The present invention intends to faithfully reproduce the above change in girth size in a shoe by devising the design and structure. By doing so, the shoe is deformed according to the continuously changing size of the foot width and fits the foot.

SUMMARY OF THE INVENTION One of the objects of the present invention is to provide a shoe that performs girth adjustment by changing the contour of the insole while keeping the height of the foot above the ground constant.

Another object of the present invention is to provide the shoe with a means for providing contours and various girth sizes that are comfortable to wear and that fit properly on the foot.

Yet another object of the present invention is to provide a shoe with a girth adjustment mechanism that is safe, easy to use, economical and yet applicable to almost any type of shoe or shoe in common use.

The shoe of the present invention has a structure similar to that of a shoe having a conventional shoe structure. However, as the shoe type, the one with the largest girth (shoe width) for each shoe size is used and designed on this. This shoe last has a member added to the bottom of the last so as to supplement the thickness of the insole. The shoe is then adjusted to provide the designed girth width of the shoe by inserting the insole into the finished shoe. For example, EE size shoes are manufactured by using a deeper shoe type than a normal EE size shoe type. And by inserting the insole of the largest girth into the shoe manufactured in this way, it fits perfectly to the EE size foot.

One of the examples of the present invention is to provide a pair of insoles having different shapes for each shoe size, and each insole is composed of an insole and an insole support portion (a portion supporting the insole). ing. When this insole is used in the shoe, the degree of contour deformation of each insole changes according to the girth of the shoe. The size of the insole can be specified variously so that it can be easily identified by size and according to the manufacturer's request, but if possible, it is the traditional N / M / W or continuous letters to indicate the size of the shoe width. It is recommended to specify according to the order of.

Another example of the invention uses a combination of an insole consisting of an insole and an insole support and a padding. In this example, the padding is arranged under the insole support, and the shape of the outer end of the insole support is variously changed according to the size and / or number of the padding used.

Another example is manual girth adjustments, such as when you need to make frequent girth size adjustments, or when it's actually impossible to carry a midsole of varying sizes. Designed for use. This example is particularly suitable for women's fashion shoes, work shoes, military shoes, sports shoes, etc. that are difficult to fit.

In each of the above examples, the contour of the insole surface changes variously according to the size of the girth. For example, at the lowest profile of the midsole surface, a substantially horizontal basal line or portion extends substantially along the longitudinal axis of the insole. However, in the heel part, it is desirable that all the examples have the same or similar dents. The contours of the anterior and medial parts of the insole should be natural from the instep side of the foot to the lateral side of the heel, that is, the foremost part of the shape with the dent of the heel. It is desirable that the shape is such that it can flow to.

In order to better understand the structure and purpose of the present invention, a more detailed description will now be given with reference to the drawings.

DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial cross-sectional view of a shoe as viewed from the side, which illustrates the basic concept of the present invention.

FIG. 2 is a plan view of the insole shown in FIG.

FIG. 3 is a cross-sectional view taken along line 3-3 of the groin of the big toe of FIG. The insole of FIG. 3 is formed to fit a girth smaller than the insole of FIGS. 4 and 5.

4 is a cross-sectional view taken along line 4-4 of the groin of the toe of the shoe of FIG.

FIG. 5 is a cross-sectional view taken along line 5-5 of the groin of the base of the big toe that is inserted into the shoe of FIG.

FIG. 6 is a cross-sectional view taken along line 6-6 of the heel side surface of the middle bottom portion of FIG. 1.

FIG. 7 is a sectional view taken along the line 7-7 in FIG. 1 in the left-right direction, and the center of the sectional view is also divided. In this example, the insole is for two types (N or W) of girth adjustment, and a stuffed one with slanted ends that can be removed is used.

FIG. 8 is another partial application example of the present invention, and is a partial cross-sectional view of the shoe viewed from the side.

Figures 9, 10, and 11 are the 9-9 line, 10-10 line, and
FIG. 11 is a transverse sectional view taken along line 11-11. Each insole is adjusted for different girth sizes.

12 is a plan view of a single insole for manual girth adjustment used in the shoe of FIG. 1 or a similar type of shoe. However, since the middle bottom is thicker than usual,
Take extra shoe depth.

FIG. 13 is a cross-sectional view of the bottom portion of FIG. 12 viewed from the side.

14 is a cross-sectional view of the mid-bottom portion of FIG. 13 taken along the line 14-14 of the constriction of FIG.

15 is a transverse cross-sectional view of the mid-bottom portion of FIG. 13 taken along line 15-15 on the heel side of FIG.

16 is a cross-sectional view of the mid-bottom portion of FIG. 13 taken along the line 16-16 of the toe of FIG.

FIG. 17 is a side view of the vertically moving edge lamp shown in FIGS. 12 and 13.

18 is a cross-sectional view of the edge ramp of FIG. 17 taken along line 18-18 of the instep.

19 is a cross-sectional view of the edge lamp of FIG. 17 taken along line 19-19 of the base of the big toe.

20 is a cross-sectional view of the edge lamp of FIG. 17 taken along line 20-20 of the toe.

FIG. 21 is a three-dimensional view of the insole portion of the single sheet of FIG. 12 that is partially exposed.

DETAILED DESCRIPTION OF THE INVENTION Reference will now be made to the drawings in which the generally widespread and sewn loafer shoes, or "tubular"
(Type) "A moccasin shoe, which is a representative shoe with an instep structure, will be described in detail as an example. These shoes are taken as an example because they are easy to explain, and the present invention can be applied to almost all other types and styles of shoes. The reference numbers in the following description are numbers assigned to each function, and therefore, when the numbers are the same, it means that they have the same or similar functions.

Reference is first made to FIG. The shoe 20 of FIG. 1 comprises an upper part 22 (all parts above the bottom skin) and a bottom 23, and the upper part 22 is attached to the bottom 23. Upper 22 is made of leather, vinyl, or other suitable material. Although the bottom 23 is shown as a unit bottom, it is made of rubber, plastic, or a similar material, and is sutured, adhesively bonded,
It is attached to the instep 22 by other methods. As the bottom 23, a conventional bottom body (not shown) composed of a sole, an intermediate bottom, a heel, a joint skin between the bottom and the instep, a soil skeleton, etc. may be used. Alternatively, the bottom 23 may be integral with the instep, as is the case with a formal "camp" or Indian moccasins without a sole. The shoe 20 is tuned using a last that fits the maximum width and maximum girth of the foot to be received. The shoe 20 also has an insertable insole 24, which comprises an insole 25 and an insole support 26, the insole support 26 being an insole.
It is attached to 25. The insole 25 and the insole support portion 26 may be attached by using adhesive bonding or the like, but if possible, they are preferably attached by molding. Use an appropriate material for the insole 25. For example, a synthetic non-woven fiber called Cambrelle (trademark) provided by Faytex Corp. of Brentley, Massachusetts may be used. Molded polypropylene is used for the insole support portion 26. 1 to 11 are examples of various types of insole that may be inserted into shoe 20 to provide different girth sizes. Each insole has a different contour of the surface of the groin, constriction, instep itself and its surroundings. However, as shown in Figure 2, Figure 2-
Each of the insole parts combined and integrated as shown in 5, 7, 9-11 respectively has the same thickness of the insole along the line 29-29 running longitudinally in the center of the insole. I have to. However, each insole is an important part especially for fitting the foot, the big toe base bulge 31 [Ball],
Center line 29-29 at each of the mid-bottoms of the waist 33 [Waist] and instep 35 [Instep] (hereinafter sometimes referred to as the BWI zone)
The contour that crosses and goes to the outside is different. Figure 12 to Figure 21
Also in, the thickness of the insole along line 29-29 in the insole center is all the same.

3 to 5 are examples of three different insole parts. Insert these insoles into the shoe 20 to fit different girths. The insole 24 of FIG. 3 has the largest enlargement in the BWI zone. Therefore, adjust the girth of the foot with a relatively small girth, that is, the foot of "N" [narrow] width. 4 is also an example of the insole portion 24 in FIG. 1 as in FIG. 3, and is a cross-sectional view around the groin of the big toe as in FIG. However, in FIG. 4, the thickness of the insole 24 is smaller than that of the insole 24 in FIG. Therefore, the bottom part 24 of FIG.
[Medium] Adjust the girth of the foot of width. Figure 5 insole 24
Is made to fit the foot with the largest girth, "W" [wi
de] Adjust the width of the feet by girth. In FIG. 5, the surface of the insole 24 is substantially flat, and the thickness is uniform throughout. That is, the line 29-29 at the center of the middle bottom of FIGS. 3 and 4
The thickness of the insole is uniform from the right to the outside.

FIG. 6 is a sectional view of the heel portion of the insole portion shown in FIGS. 1 to 5. This heel is also made of an insole 25 joined to an insole support 26. The contours of the heel portion in FIGS. 8 to 11 described below are the same as those in FIG.

The middle bottom of FIG. 7 is slightly different from the examples of FIGS. FIG. 7 shows an example in which one insole is used to fit various girths. In this example, there is a gap or groove between the insole 25 that constitutes the insole portion 24 and the insole support portion 26, and the padding 28 is inserted in this gap or groove to perform girth adjustment. Although the number and thickness of the paddings 28 may be arbitrarily specified, at least one padding 28 is provided in each of the left and right grooves of the toe and / or the heel portion, and preferably fixed. This padding works like the contours of the insole with the effect of FIGS. 3 to 5, but in the case of the padding, FIG. 3 (N width) and FIG.
Only the local adjustment shown in (W width) is performed. Stuffing 28
Temporary cement, crimp tape, Ve to secure
lcro (trademark) or other means. Alternatively, the retaining force and frictional force of the instep may be used. However, the use of the padding is limited to the one having the same contour as the application example of FIGS.

8 to 11 show another application example of the present invention. This example is similar to the examples of FIGS. 3 to 5, but the central portion of the insole is thicker than the examples of FIGS. 3 to 5. Therefore, both ends of the insole are further deeply deformed, so that more appropriate girth adjustment can be performed as compared with the examples of FIGS. 3 to 5. FIG. 8 is a partial cross-sectional view of the shoe 30 seen from the side direction. Upper part
32 is attached to the intermediate bottom 36 by means of stitches 34. The middle bottom 36 is attached to the unit bottom 38 with an adhesive. The insole 40 includes an insole 42 and an insole support portion 44, and is inserted into the shoe 30.
The materials of the insole 42 and the middle support portion 44 are the same as those in the examples of FIGS. 1 to 6, but the thickness is larger than that of the examples of FIGS. FIG. 9 is a cross-sectional view taken along line 9-9 of the groin of the big toe shown in FIG. In FIG. 9, the insole 40 occupies a large amount of the internal volume of the shoe 30, and is designed to fit the smallest girth (N width) foot. FIG. 10 is an example of the insole portion 40. Figure
The center of the insole 10 is the same as that shown in FIG. 9, so that the height of the foot from the ground and the size of the tread (the area of the part where the shoe touches the ground) can be kept constant. However, the insole surface is flatter than the surface of FIG. 9 and is designed to fit feet wider than N-width feet, that is, M-width feet.
FIG. 11 is an example of the insole portion 48. The insole 48 is similar to the insole 40, but with an end slope 50 at the edge of the insole 48. Therefore, the upper part 32 can extend higher than usual and can be extended upward.
The unit bottom 38 does not have to be deformed either. That is, in FIG. 11, the instep
Due to the extra extension of 32 and the flat surface of the insole 48, the girth size of the shoe 30 is maximized and is designed to fit the largest girth's foot. Further, as in the example of FIGS. 1 to 7, the number and size of the insole or the use of the padding may be arbitrarily determined as in the example of FIG.

The examples in Figures 12 to 21 are for cases where girth adjustment is needed immediately and where it is difficult to prepare insoles of various girth sizes. In this example, the contour of the front part of the shoe, which actually bears weight, that is, the upper part of the middle bottom of the BWI zone can be freely changed within a fixed range and can be arbitrarily adjusted by manual operation. FIG. 12 is a plan view of the insole portion 50. Figure 13
FIG. 12 is a vertical sectional view of 12. The insole 50 comprises an insole 52 and a bottom interior 54, which is attached to the bottom interior 54. The material of the insole 52 is preferably Cambrelle (trademark) fiber and the bottom inner material 5
It is preferable to use polypropylene for 4. Bottom material 5
Underneath 4 are adjustable ramps 56 and 58 that slide in the anteroposterior direction of the foot. These lamps use molded articles of relatively hard and flexible plastic material, such as cellular ethylene vinyl acetate or other such plastic material. The lamps 56 and 58 are preferably mounted on a polypropylene molded insole base 60. The insole base 60 has a drum 62, and the drum 62 can be rotated by inserting a screwdriver or a coin into the groove 64. As shown in FIG. 12, a cable 66 surrounds the drum 62,
These cables are attached to ramps 56 and 58 with fasteners 68 and 70.
Is attached to. These tables also pass around and / or through the grommet 72 to provide an insole base 60.
Along and under or near fasteners 68 and 70.
These cables serve to move both lamps 56 and 58 in the same direction. As shown in FIG. 12, when the drum 62 is turned counterclockwise, the cable 66 moves in the direction of the arrow. This movement causes the ramps 56 and 58 to move backwards, that is, towards the 15-15 line on the side of the heel. The ramps 56 and 58 move in the anterior-posterior direction of the foot, so they are preferably placed in the tunnel 82 so that they move inside the tunnel. The material for the tunnel 82 is preferably a plastic material that is somewhat stretchable, thin, durable, and heat-sealing. When the tunnel is not used, as shown in FIG. 15, the inner bottom base 60 is located at the base center 74, the bottom inner member 54 is located at the peripheral edge, and the insole is located at the heat seal 52. The lamp.
As lamps 56 and 58 move backwards, the reverse lamp 76 in Figure 15
And 78 at the maximum angle, supported on the front 15-15 line of the heel of FIG. As shown in Figure 14, the front of the heel
In front of the 15-15 line, that is, the 14-14 line of the groin of the big toe, the slopes of the ramps 56 and 58 gradually become smaller and approach the horizontal state. The backward lamps 76 and 78 are fixed lamps and are arranged to face the movable lamps 56 and 58.
The function of the reverse lamps 76 and 78 enables simultaneous and similar deformation of the upper surfaces on both sides of the insole in the entire BWI zone. For this reason, the BWI zone, which is the most important part when adjusting the girth, is designed to fit the foot correctly and optimally.

FIG. 17 is a side view of lamps 56, 58 and cable clamp 80. Figures 18 to 20 show lamps 18-18, 19-1 respectively.
It is sectional drawing in line 9 and 20-20. The cross-sectional view of lamp 56 is the same as that of lamp 58. By the way, the area around the insole of the insole (that is, the portion between lines 3-3 and 6-6 in Fig. 1) does not seem to support both sides of the foot, but in reality In high shoes, the foot is not felt in such an empty space because the weight does not rest on the soil.

FIG. 21 is a partially exploded perspective view of the insole of FIGS. 12 to 20.
In this figure, the walls of the tunnel have been removed to make it easier to see the structure of the insole.

Claims (3)

[Claims] 1. An instep attached to a sole to define a shoe cavity and at least two interchangeably installed insoles of substantially uniform thickness along a generally longitudinal axis. The insole is sized so that the height of the foot from the bottom of the shoe is kept substantially unchanged even if there is a girth adjustment by exchanging these insoles. Are at least two insoles within the shoe cavity so as to provide different girths for the same shoe without deforming the sole by varying the shape and thickness of the left and right sides as compared to the other insoles being replaced. Shoes designed to be used separately, with girth adjustment to fit your foot. 2. The insole is composed of an insole and an insole support, and at least one filling is inserted into a gap provided on the left and right between the insole and the insole support to open the insole. The girth adjusting shoe according to claim 1, which is formed into a desired shape. 3. A sole having a toe portion, a base of the big toe and a heel portion, an instep portion attached to the sole so as to form a shoe cavity, and an insole provided in the shoe cavity. An insole having, a pair of ramp means provided on both sides between the bottom of the insole and the top of the shoe sole, for adjusting the girth of the shoe while keeping the height of the foot from the shoe sole unchanged. A girth adjusting shoe, further comprising: adjusting means for sliding the pair of ramp means between the toe portion and the heel portion of the sole of the foot.