TWI656852B - Method for Defining Foot Arch Area in a Shoe Midsole - Google Patents

Abstract

A method for defining the characteristics of the insole arch is to obtain a forefoot center line and a heel center by using a plurality of auxiliary lines and extension lines in the range of the contour line after obtaining a contour of the middle floor. a line, and then using the proportional position of the front and rear extension of the heel center line, the inner waist point of the inner edge of the contour line, the first metatarsal point, and the insole at the center of the arch of the arch are lowest on the middle floor. Point, thereby drawing the upper and lower limits of the curved arch range, using the above-mentioned foot feature position and the arch range to provide the insole designer to draw the size data corresponding to the insole of the middle floor, so that the designer or the drafter can Quickly and correctly draw the insole.

Description

Method of defining the characteristics of the insole arch

The present invention relates to a method of defining an arch feature, and more particularly to a method of defining a foot arch feature.

In the process of insole production, the shape and comfort of the insole are often adjusted by modifying the design of the existing insole or modifying the insole mold, and the commercially available insole is redesigned less by planning the position of the insole foot.

The way to modify the existing insole can not be quantified by the experience of the designer or the drawing engineer, and the result of modifying the insole mold is the time for repeated modification; in addition, due to the increasing number of insoles on the market, the support is emphasized. Functionality, mostly to explore how to adjust the arch height and arch geometry to achieve the effect of correcting the wearer's posture or pressure on the sole of the foot, but the height and geometry of these arches are closely related to the position of the foot bone. If the structure of the insole arch is adjusted only by the feeling of the designer or the drawing engineer, in addition to the inability to quantify the size design of the insole of various sizes, the insole cannot be quickly and correctly drawn for production.

Since the existing insole primarily adjusts the geometry of the arch portion in the sense of the designer, the results of the drawing and design cannot be quantified. To this end, the present invention is based on the bottom information of the last and the human foot Anatomical knowledge defines the position and proportion of the midfoot features of the shoe, producing quantitative data that allows the designer to quickly and correctly draw the insole.

In order to achieve the above object, the present invention provides a method for defining a foot arch feature of a shoe insole, the method comprising: obtaining a mid-floor profile: obtaining a contour of a midsole corresponding to the hoe from a hoe; obtaining a forefoot centerline: The most convex portions of the front and rear half of the inner side of the contour line define an inner palm cutting point and an inner heel cutting point, and an outer palm cutting point and an outer heel cutting point are defined at the most convex portions of the front and rear half portions outside the contour line. Connecting a center of the line connecting the inner palm tangent point to the tangent point of the outer palm and a center connecting the inner tangent point to the tangent point of the outer point to obtain a first extension line, the first extension line and the front and rear sides of the contour line The intersection is defined as a front point and a rear point. A first auxiliary line is connected to the front point and the rear point, and a second auxiliary line is drawn perpendicular to the first auxiliary line and passes through the front point. The second auxiliary line And intersecting the contour line with the front point and an end point, connecting a center of the front point to the end point and a second extension line of the rear point, where the intersection of the second extension line and the front side of the contour line is defined For a forefoot center point, connect the The center point of the palm and the point of the back have a center line of the forefoot; the center line of the heel is obtained: the length of the center line of the forefoot is three decimal places from the back to the front and the inner and outer sides of the line meet. Defining a front inner point and a front outer point, the front line center line length is defined by a vertical line that is one tenth of the front and the front and the inner and outer sides of the contour line define a rear inner heel a point and a rear heel point, a center line connecting the front inner point to the front outer point and a center line connecting the rear inner point and the rear outer point to obtain a third extension line, The intersection of the third extension line and the front and rear sides of the contour line is respectively defined as a trailing center line front point and a back center line back point, connecting the trailing center line back point and the trailing center line point. Point the centerline; calibrate the foot feature position: anywhere in the back centerline from 15% to 18% of the length of the back, 36% to 41%, and 65% Up to 68% of each position defines a heart, a bow center, and a first metatarsal point, the heel center line passing through the Hanging heart The intersection of the straight line and the inner side of the contour line is defined as an inner lumbar point, and the intersection of the vertical line of the heel center line passing through the first metatarsal auxiliary point and the inner side of the contour line is defined as a first metatarsal point; Obtaining the lowest point of the insole: connecting the inner palm cutting point and the inner heel cutting point to obtain an inner auxiliary line connecting the outer palm cutting point and the outer heel cutting point to obtain an outer auxiliary line, the rear center line passing through the center of the arch of the foot The line is defined as a fourth extension line, and the portion of the fourth extension line between the inner auxiliary line and the outer auxiliary line is defined as a low point calibration line segment, and the low point calibration line segment is from the inside to the outside of six sixths. And five-fifths each are defined as a first lowest point and a second lowest point, the lowest point of the insole is between the first lowest point and the second lowest point; and the range of the arch is: the foot The lower limit of the range of the arch is the range of the arch of the first arc drawn by the first metatarsal point, the first lowest point, and the inner waist point. The upper limit of the arch range is the first metatarsal point. The second lowest point and the inside of the heart An arc range of the second arch plotted point calibration arch range between the first arc and the second arc.

Using the method of the preferred embodiment, the applicable foot feature position, the lowest point of the insole, and the arch range can be calibrated on the midsole of the hoe of a certain size to produce the insole suitable for the hoe. The position and proportion of the foot features allow the designer or drafter to quickly and correctly draw the insole by the data results produced by the method of the present invention while avoiding the time to modify the insole design by design alone.

A‧‧‧ contour

a‧‧‧In the palm of the hand

b‧‧‧With cut points

Ab‧‧‧inside auxiliary line

c‧‧‧External cut point

d‧‧‧External cut point

Cd‧‧‧ outside auxiliary line

E‧‧‧中中点

F‧‧‧ with the midpoint

Ef‧‧‧first extension line

g‧‧‧Before

After h‧‧‧

Gh‧‧‧first auxiliary line

i‧‧‧Endpoint

Ig‧‧‧second auxiliary line

J‧‧‧through point

Jh‧‧‧second extension line

k‧‧‧Forefront Center

Kh‧‧‧ Forefoot Center Line

x‧‧‧Before and after

y‧‧‧Before the point

W‧‧‧ After the point

z‧‧‧After the point

N‧‧‧ followed by the midpoint

M‧‧‧ followed by the midpoint

Mn‧‧‧ third extension line

O‧‧‧ followed by the center line

L‧‧‧ followed by the center line

Lo‧‧‧ followed by the centerline

10‧‧‧踵心

11‧‧‧foot arch center

12‧‧‧ fifth metatarsal point

13‧‧‧ First metatarsal point

14‧‧‧Small toe assist point

15‧‧‧Big toe assist point

16‧‧‧踵心心腰点

17‧‧‧ fifth metatarsal point

18‧‧‧ First metatarsal point

19‧‧‧Small toe convex point

20‧‧‧Big toe convex

Ti‧‧‧ waist point in the center of the arch

To‧‧‧The outer waist point of the arch center

Tito‧‧‧fourth extension line

30‧‧‧ low point calibration line

T4‧‧‧ first lowest point

T5‧‧‧ second lowest point

40‧‧‧First arc

41‧‧‧second arc

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a flow chart showing the steps of a preferred embodiment of the present invention.

2 is a schematic illustration of the steps of obtaining a forefoot centerline in accordance with a preferred embodiment of the present invention.

3 is a schematic diagram of the steps of obtaining a forefoot centerline in accordance with a preferred embodiment of the present invention.

4 is a schematic illustration of the steps of obtaining a heel centerline in accordance with a preferred embodiment of the present invention.

Figure 5 is a schematic illustration of the steps of calibrating the feature points of a foot in accordance with a preferred embodiment of the present invention.

Figure 6 is a schematic illustration of the step of calibrating the highest point of the insole in accordance with a preferred embodiment of the present invention.

Figure 7 is a schematic illustration of the lowest point of the insole taken in accordance with a preferred embodiment of the present invention.

Figure 8 is a schematic illustration of the range of the index of the arch of the preferred embodiment of the present invention.

In order to understand the technical features and practical effects of the present invention in detail, it can be implemented in accordance with the contents of the specification, and further described in detail with reference to the preferred embodiments shown in the drawings.

Referring to the preferred embodiment of the present invention as shown in FIG. 1 to FIG. 4, the present invention provides a method for defining the characteristics of the insole of the insole. The steps of the method are as shown in FIG. 1 including: obtaining the contour of the middle floor: selecting any The hoe of the shoe size obtains the contour A of the bottom plate corresponding to the hoe from the bottom surface of the hoe, and the contour A corresponds to the position of the sole of the human body, and is divided into inner and outer sides and front and rear sides.

Obtaining the center line of the forefoot: Please refer to FIG. 2 and FIG. 3 to define an inner palm tangent point a and an inner heel tangent point b at the most convex portions of the front half and the rear half of the inner side of the contour line A, respectively. The outermost portion of the outer side of the line A and the most convex portion of the rear half define an outer palm tangent point c and an outer heel tangent point d, respectively, and the center of the line connecting the inner palm tangent point a and the outer palm tangent point c is defined as a palm midpoint e. The center of the line connecting the tangent point b and the outer point tangent point d is defined as a midpoint f.

Connecting the midpoint e and the midpoint f to obtain a first extension line ef, the intersection of the first extension line ef and the front and rear sides of the contour line A is defined as a front point g and a back point h, Connecting the front point g and the back point h to obtain a first auxiliary line gh, drawing a second auxiliary line ig, the second auxiliary line ig is perpendicular to the first auxiliary line gh and passes the front point g, the second auxiliary The line ig intersects the contour line A at the front point g and an end point i, and the center of the line connecting the front point g and the end point i is defined as a through point j, connecting the through point j and the rear Point h has a second extension line jh, and the intersection of the second extension line jh and the front side of the contour line A is defined as a forefoot center point k, and the forefoot center point k and the back point h have a forefoot Center line kh.

Get the heel center line: Please refer to Figure 4, the length of the forefoot center line kh is divided into ten equal parts from the back and forward, the vertical line of the forefoot center line kh third equal part and the contour The intersections of the inner and outer sides of the line A are respectively defined as a front inner point x and a front outer point y, the vertical line of the first aliquot of the forefoot center line kh and the inside of the outline A, The intersections on the outer sides are defined as a rear inner point w and a rear outer point z. The center point of the front inner point x and the front outer point y is defined as a trailing midpoint n. The center point of the rear inner point w and the rear outer point z is defined as a trailing midpoint m, and the trailing midpoint m and the trailing middle point n are a third extension line mn The intersection of the third extension line mn and the front and rear sides of the contour line A is defined as a heel center line front point o and a heel center line point l, respectively, and the back center line is connected to the point l. And the point before the center line is followed by the center line lo.

To calibrate the position of the foot feature: please refer to Figure 5 and Figure 6. In the position where the center line lo is 15% to 18% from the back to the front, and any position from 36% to 41%. Any position from 57% to 59%, any position from 65% to 68%, any position from 71% to 74%, and any position from 82% to 85% define a heart 10, one foot The bow center 11, a fifth metatarsal assist point 12, a first metatarsal assist point 13, a small hallux assist point 14, and a large hallux assist point 15.

The intersection of the vertical line of the heel center line lo passing through the center of the heart 10 and the inner side of the contour line A is defined as an inner waist point 16 that passes through the fifth metatarsal auxiliary point 12 The intersection of the vertical line and the outer side of the contour line A is defined as a fifth metatarsal point 17, and the intersection of the vertical line of the heel center line lo passing through the first metatarsal auxiliary point 13 and the inner side of the contour line A is defined as one The first metatarsal point 18, the intersection of the vertical line of the heel center line lo passing through the small toe auxiliary point 14 and the outer side of the contour line A is defined as a small toe outer convex point 19, the heel center line lo The intersection of the vertical line passing through the big toe assist point 15 and the inside of the outline A is defined as a large toe outer bump 20.

The highest point of the insole is determined: the vertical line of the heel center line lo passing through the center 11 of the arch and the intersection of the inner and outer sides of the contour A are respectively defined as the waist point ti and the center of the bow of the center of the foot arch The outer waist point to, the waist point ti in the center of the arch is the highest point of the insole, and the height of the highest point of the insole when designing the insole does not exceed 30 mm.

Obtain the lowest point of the insole: Please refer to FIG. 6 and FIG. 7 to connect the inner palm tangent point a and the inner heel tangent point b to obtain an inner auxiliary line ab, connect the outer palm tangent point c and the outer heel tangent point d to obtain an outer side. The auxiliary line cd connects the waist point ti in the center of the arch and the outer waist point of the center of the arch to a fourth extension line tito (the fourth extension line tito is the center line of the heel and passes through the center of the arch a vertical line of 11), a portion of the fourth extension line tito between the inner side auxiliary line ab and the outer side auxiliary line cd is defined as a low point calibration line segment 30, and the low point calibration line segment 30 is divided into six from the inside to the outside. Equally, the fourth aliquot and the fifth aliquot of the low point calibration line 30 are respectively defined as a first lowest point t4 and a second lowest point t5, and the lowest point of the insole is located at the first lowest point t4 and The position between the second lowest point t5.

Calibration of the arch range: Please refer to Figure 8 for example. With the smallest arch range as an example, the first metatarsal point 18, the first lowest point t4, and the inner waist point 16 are drawn. The first arc 40 is the smallest arch range; the largest arch range is taken as an example, which is drawn by the first metatarsal point 18, the second lowest point t5, and the inner waist point 16 The second arc 41 is the largest arch range, and the boundary of the marked arch range of the present invention is that any one of the two ends between the first arc 40 and the second arc 41 is respectively connected to the first metatarsal point 18 and the The inner arc of the waist point 16 is curved.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the claims of the present invention, and other equivalent changes or modifications which are not departing from the spirit of the present invention should be included in the present invention. Within the scope of the patent application.

Claims (3)

A method for defining the characteristics of an insole arch, the steps comprising: obtaining a contour of the midsole: obtaining a contour of the midsole corresponding to the hoe from a hoe; obtaining a center line of the forefoot: front and rear half of the inside of the contour The most protruding points define an inner palm cutting point and an inner heel cutting point, and an outer palm cutting point and an outer heel cutting point are respectively defined at the most protruding portions of the front and rear half portions outside the contour line, and the inner palm cutting point is connected with the outer point The center of the line connecting the point and the center of the line connecting the point to the point of the tangent point are a first extension line, and the intersection of the first extension line and the front and back sides of the contour line is defined as a front point and a subsequent point, connecting the front point and the back point to obtain a first auxiliary line, drawing a second auxiliary line perpendicular to the first auxiliary line and passing the front point, the second auxiliary line intersecting the contour line a point and an end point, a center connecting the front point and the end point and a second extension line, the intersection of the second extension line and the front side of the contour line is defined as a forefoot center point, and the connection is The forefoot center point and the back point are one before Centerline; the centerline of the heel: the vertical line of the forefoot centerline is three points from the back to the front and the intersection of the inner and outer sides of the contour defines a front inner point and a front With the point, the vertical line of the forefoot center line is defined by a vertical line that is one tenth of the back and the intersection of the inner and outer sides of the contour line defines a rear inner point and a rear outer point. a center line connecting the inner point with the front outer point and a center line connecting the rear inner point and the rear outer point, the third extension line, the third extension line and the contour front and back The intersections on both sides are defined as a trailing point of the centerline and a trailing point of the centerline, and the point of the trailing centerline and the centerline of the heel are followed by a centerline; the foot is marked Feature position: Define one point at any position where the percentage of the back center line is 15% to 18%, any position from 36% to 41%, and any position from 65% to 68%. a center of the heart, a bow, and a first humeral auxiliary point, the heel center line passing through the vertical line of the center of the heart and the inside of the line Is defined as the intersection point of a heart back heel, the heel vertical line passing through the center line of the first metatarsal and the auxiliary point is defined at the intersection of the inner contour line of a first metatarsal point; Obtaining the lowest point of the insole: connecting the inner palm cutting point and the inner heel cutting point to obtain an inner auxiliary line connecting the outer palm cutting point and the outer heel cutting point to obtain an outer auxiliary line, the rear center line passing through the center of the arch of the foot The line is defined as a fourth extension line, and the portion of the fourth extension line between the inner auxiliary line and the outer auxiliary line is defined as a low point calibration line segment, and the low point calibration line segment is from the inside to the outside of six sixths. And five-fifths each are defined as a first lowest point and a second lowest point, the lowest point of the insole is between the first lowest point and the second lowest point; and the range of the arch is: the foot The lower limit of the range of the arch is the range of the arch of the first arc drawn by the first metatarsal point, the first lowest point, and the inner waist point. The upper limit of the arch range is the first metatarsal point. The second lowest point and the range of the arch of the second arc drawn by the inner waist point, the scaled arch range being between the first arc and the second arc. A method of claim 1, wherein the step of calibrating the highest point of the insole after the step of calibrating the position of the foot feature is to pass the heel centerline through the foot The intersection of the vertical line at the center of the bow and the inside of the contour is defined as the waist point in the center of the foot arch, and the waist point in the center of the arch is the highest point of the insole. A method for defining an insole arch feature according to claim 1 or 2, wherein in said step of calibrating a foot feature position, said back center line has a length from back to front of 57% to 59% Any position, any position from 71% to 74%, and any position from 82% to 85% define a fifth metatarsal auxiliary point, a small big toe assist point, and a large big toe assist point; The intersection of the vertical line passing through the fifth metatarsal auxiliary point with the center line and the outer side of the contour line is defined as a fifth metatarsal point, and the heel center line passes through the vertical line of the small toe auxiliary point and the The intersection of the outside of the contour line is defined as a small toe outer convex point, and the intersection of the vertical line passing through the center line of the big hallux point and the inner side of the contour line is defined as a large thumb toe.