JP2006000258A - Upper tightening structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an upper tightening structure which can promise high holding and fitting characteristics. <P>SOLUTION: The upper tightening structure covering the instep is provided with an elastic member 1 covering the side face of the foot and having an essential elasticity, a non-elastic member 2 covering a side face of the foot and essentially hardly extensible and a tightening member 5 which pulls the non-elastic member 2, and the elastic member 1 and non-elastic member 1 are joined together with a pair of junctions 31, 32, and they are formed so that the non-elastic member 2 is longer than the elastic member 1 within the length of a non-junction section 4 when they are not tightened, and when tensile force is given to the non-elastic member 2, the elastic member 1 extends as long as the length of the non-elastic member 2 and does not extend longer than the length of the non-elastic member 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an upper tightening structure.

  The upper of the shoe is required to have functions such as a holdability for holding the foot in a stable state and a fit property for bringing the upper into close contact with the foot. Such a function is important particularly in sports shoes such as athletics.

The following patent documents 1 and 2 are known as shoes for athletics.
JP 2000-210101 A (summary) JP 2002-306204 A (summary)

  In Patent Document 1, in order to fit a sole or the like of a shoe to a foot, a band-shaped enclosure with little elongation is provided. However, in the shoe disclosed in Patent Document 1, since the surface of the foot is exposed from between the enclosures, the surface of the foot is liable to be damaged, and the air resistance is increased due to the unevenness.

  Patent Document 2 discloses a cover that covers a belt as the enclosure. This Patent Document 2 aims to reduce air resistance by covering the belt with a stretchable cover. However, the shoe of Patent Document 2 has a cover along the foot by closing the fastener separately from the shoelace for fastening the belt. In this way, when the elastic cover is closed with a fastener, if the cover is large relative to the foot, the cover will not fit well with the foot or wrinkles will easily occur, while the cover will cover the foot. When is small, it becomes cramped and the movement of the foot is hindered.

On the other hand, the following patent document 3 is known as an upper material of a shoe aimed at improving good fit and holdability.
Registered Utility Model No. 3028605 (FIG. 3, 0010)

The upper material of Patent Document 3 is obtained by superimposing a semi-rigid urethane foam material on a soft elastic material, and basically wrapping the foot with an elastic upper material to obtain a good fit. Aiming. However, in Patent Document 3, the fit feeling is improved only by the stretchability of the upper material itself, and high holdability and fitability cannot be obtained.
Note that Patent Document 3 does not disclose anything about making a non-stretchable material longer in the tensile direction than a stretchable material.

  An object of the present invention is to provide an upper fastening structure that can be expected to have high holdability and fit.

  In order to achieve the above-mentioned object, the present invention provides an upper fastening structure for wrapping an instep, which wraps at least a part of a side surface of the foot and is essentially stretchable, A non-stretchable member that wraps at least a part of the side surface and is essentially difficult to extend in a tightening direction from the side of the foot toward the center of the instep, and a tightening member that pulls the non-stretchable member in the tightening direction. The stretchable member overlaps at least a part of the non-stretchable member, and the stretchable member and the non-stretchable member are joined to each other at two joints spaced in the tightening direction. At the time of attachment, the length in the tightening direction of the non-joint portion between the two joint portions is formed so that the non-stretch member is longer than the stretch member, and between the two joint portions. The non-stretchable member is loose, whereas When tension is applied to the non-stretchable member by the tightening member, the stretchable member is allowed to extend to a state commensurate with the length of the non-stretchable member in the tightening direction. The non-stretchable member is configured not to extend more than the length corresponding to the length in the tightening direction.

When the slacking non-stretchable member is pulled in the tightening direction by the tightening member, the non-stretchable member is fitted to the back of the foot, the foot is held by the non-stretchable member, and the stretchable member is non-stretchable. Extends to the length of the member in the tightening direction and fits the instep. As described above, since the foot is held by the non-stretchable member and the stretchable member is not longer than the non-stretchable member, high holdability is obtained. On the other hand, not only the non-stretchable member fits to the foot, but also the stretchable member extends by the tightening force of the tightening member and fits to the foot, so that high fit is obtained.
In addition, the elastic member is not closed by the fastener, but is tightened by the fastening member together with the non-expandable member, so that the elastic member does not feel cramped or wrinkles regardless of the size of the foot. To fit. That is, it can fit a leg moderately according to the size of a wearer's leg.

  In addition, the said non-expandable member may be provided with the some strip | belt-shaped part which is essentially hard to extend.

In the present invention, the “stretchable member having essentially stretchability” includes a stretch material generally used for a shoe upper. As a preferable example, the stretch rate at break is 200% or more (unfastened) When the length of time is 100, a fabric material having a length at break of 200 or more is included, and a fabric material having a stretch rate of 300% or more is more preferably used.
On the other hand, “non-stretchable members that are essentially difficult to stretch” are required to have a lower stretch rate than at least “stretchable members that are inherently stretchable” and include materials that do not stretch at all. A material that exhibits some elongation by force, for example, a material having an expansion / contraction rate of 150% or less at break (the length at break is 150 or less when the length at non-tightening is 100) is included.

Embodiments of the present invention will be described below with reference to the drawings.
1 (a) and 1 (b) each show a shoe for athletics (for a left foot) according to an embodiment of the present invention, and FIG. FIG. 1B is an outer side view of the inner with the elastic member 1 and the sole removed.
In the following embodiments, an example in which the tightening structure of the present invention is used on both side surfaces of the foot will be described. However, the tightening structure can be provided only on the inner side surface or the outer side surface of the foot. That is, the tightening structure of the present invention can be provided on the inner side surface and / or the outer side surface of the foot.

As shown to Fig.1 (a), the shoe of a present Example is provided with the sole 7 and the upper U which wraps the instep. A stretchable member 1 having essentially stretchability is disposed at the position of the side surface of the stepped portion of the upper U. The elastic member 1 is disposed so as to cover the outer surface 91 of the middle foot part from the sole 7 to the center of the instep. On the other hand, the toe side surface 92 of the forefoot portion in front of the elastic member 1 is formed of a non-stretchable material, and the member of the side surface 92 of the toe is sewn and joined to the elastic member 1 at its rear end. Yes. The side surface 93 of the heel of the hind leg behind the elastic member 1 is formed of a non-stretchable material, and the member of the side surface 93 of the heel is stitched and joined to the elastic member 1 at its front end. .
In addition, in order to reduce air resistance, the surface of the said elastic member 1 is processed smoothly. As the surface processing, for example, embossing or silmy processing disclosed in JP-A-2002-306204 can be used.

  As shown in FIG. 1 (b), a plurality of belt-like portions 21 made of a non-stretchable material are arranged on the inner side (back side) of the elastic member 1, and the plurality of belt-like portions 21 are non-stretchable members 2. Is configured. The plurality of band-like portions 21 extend from the upper surface of the sole 7 to the center of the instep of the foot on the side surface of the stepped portion of the foot, and all of the portions are covered from the outside by the elastic member 1. The belt-like portion 21 is set to be essentially difficult to extend in the longitudinal direction.

A loop 51 (FIG. 1B) for inserting a shoelace (an example of a fastening member) is provided at the position of the upper end of the belt-like portion 21. The loop 51 may be formed by folding the band-shaped portion 21 at the upper end, or may be formed by sewing a separate loop-shaped member to the upper end of the band-shaped portion 21.
A shoelace is inserted through the loop 51, and when the shoelace is tightened, the belt-like portion 21 is pulled in the tightening direction P. Each of the belt-like portions 21 is formed to be elongated along the fastening direction P (that is, the longitudinal direction of the belt-like portion is substantially the same as the fastening direction P), and is substantially parallel to each other. It is arranged to be. Further, a belt 52 having a hook and loop fastener is provided at the upper end portion of the upper U. By tightening the belt 52, the belt-like portion 21 can be supplementarily pulled in addition to the tightening by the shoelace.

  As a material for forming the stretchable member 1, for example, a fiber made of elastic yarn (spandex, knitting of polyurethane and nylon (registered trademark)), a knit material, or the like can be used. On the other hand, as the material for forming the non-stretchable member 2, for example, nylon tape, Tetoron (registered trademark) tape, aramid fiber fabric, artificial leather, mesh material (Russell mesh, etc.), or single mesh and sponge and back A three-layer material made of a material can be used.

  When artificial leather is used as the non-stretchable member 2, the artificial leather lacks flexibility, and therefore it is preferable to perform certain processing. For example, as shown in FIGS. 5A and 5B, artificial leather is formed in a mesh shape or a lattice shape having a plurality of through holes 29 to prevent wrinkles, This can be mitigated. However, in this case, in order to suppress the elongation in the tightening direction P, it is necessary to provide a portion 25 (a portion where no hole is opened) that continuously extends in the tightening direction P. Further, the elongation may be stopped by adhering a thin sheet of synthetic fiber such as TPU to the surface of the artificial leather subjected to these processes or by attaching a backing. Similar processing can be applied to the Russell mesh or the three-layer material.

Next, the relationship between the stretchable member 1 and the plurality of belt-like portions 21 will be described.
FIG. 2A is a cross-sectional view of the shoe in a state before the shoelace is tightened.
In this state, the length along the tightening direction of the belt-like portion 21 is set longer than that of the elastic member 1. The length of the stretchable member 1 along the tightening direction is preferably set to approximately 75% to 90% of that of the band-shaped portion 21. This is to obtain an appropriate fit and holdability described later.

  The lower end portion of the elastic member 1 and the lower end portion of the belt-like portion 21 are sewn and joined to each other at a first joint portion 31 in the vicinity of the sole 7. In the first joint portion 31, the stretchable member 1 and the belt-like portion 21 are joined to the sole 71 of the sole 7.

  Moreover, the upper end part of the said expansion-contraction member 1 and the upper end part of the strip | belt-shaped part 21 are mutually sewn and joined in the 2nd junction part 32 located in the center of an instep at the time of fastening. In the present embodiment, a loop 51 is formed at the upper end of the belt-like portion 21, and a shoelace 5 (an example of a tightening member) is inserted through the loop 51.

  As described above, the elastic member 1 and the belt-like portion 21 are joined at the two joint portions 31 and 32, and the belt-like portion 21 is set longer than the telescopic member 1 at the non-joint portion 4 between the joint portions 31 and 32. Therefore, as shown in FIG. 2A, at the time of non-tightening, the band-like portion is loosened in the non-joined portion 4 between the joint portions 31 and 32.

  Furthermore, as shown in FIG.1 (b), the upper U of a present Example is provided with the strip-shaped non-stretchable reinforcement member 6 long in the front-back direction. As shown in FIG. 2A, the reinforcing member 6 is joined to the outer side (front side) of the elastic member 1 and the belt-like part 21 at the second joint part, and the second joint part 32 is joined to the foot in the length direction. Connect to L.

  In addition, the cross section of the position where the non-stretchable belt-like portion 21 is not arranged is as shown in FIG. In such a position, only the elastic member 1 is joined to the inner bottom 71 of the sole 7, and the reinforcing member 6 is joined to the outside of the upper end portion of the elastic member 1.

Next, the operation of the tightening structure of this embodiment will be described.
As shown in FIG. 2 (b), when the shoelace 5 inserted through the loop 51 is tightened, the loop 51 is formed at the upper end of the belt-like portion 21, so that tension is directly applied to the belt-like portion 21. Thus, the slender belt-like portion 21 is pulled in the tightening direction P. As a result, the belt-like portion 21 made of a material that is essentially difficult to stretch adheres closely to the instep, and does not extend unnecessarily, so that the instep can be appropriately held.

  On the other hand, the elastic member 1 that is shorter than the belt-like portion 21 is similarly tensioned when the belt-like portion 21 is pulled, and extends in the non-joined portion 4 until it reaches a state commensurate with the length of the belt-like portion 21. . As shown in FIG. 2 (b), the stretchable member 1 extends so as to fit along the outer surface of the pulled belt-like portion 21, and fits the instep of the foot through the belt-like portion 21.

At this time, the elastic member 1 has a wide tolerance range and can be tightly attached to the instep with equal tension even for individual differences such as the instep height and foot circumference, so that an appropriate fit can be obtained. It is done. For example, the degree of adhesion does not deteriorate even with a lower foot, and it does not feel tight even with a higher foot. Moreover, since an appearance without wrinkles along the instep is obtained, air resistance can be reduced and uncomfortable foot contact can be prevented.
Moreover, since the expansion-contraction member 1 cannot extend longer than the length of the belt-like portion 21, the upper does not extend unnecessarily, and the fit to the instep and the hold property are not hindered.

  Since the reinforcing member 6 is provided so as to connect the second joint portion 32, the tension acting on the belt-like portion 21 is dispersed in the front-rear direction of the foot via the reinforcing member 6 and is applied to the elastic member 1. It is transmitted. Therefore, since tension is not concentrated on the plurality of belt-like portions 21, the belt-like portion 21 can be prevented from excessively pressing the instep. Further, even in a place where the belt-like portion 21 is not provided as shown in FIG. 2 (b), the tension is transmitted to the elastic member 1 so as to be fitted to the instep.

  Further, since the portions of the plurality of strip-like portions 21 having large irregularities on the non-joining portion 4 are covered with the elastic member 1 having a smooth surface so as not to be seen from the outside, a member for wrapping the elastic member 1 from the outside is provided. Even if it is not, the air resistance can be reduced. Furthermore, since such extra members and structures are unnecessary, cost reduction and weight reduction can be achieved.

  Since the stretchable member 1 and the plurality of belt-like portions 21 are provided on the side surfaces of the stepped portion of the foot, the stepped portion that is most important in running is firmly held, the foot shake in the shoe is eliminated, and it is always stable. Can be run. In addition, since the belt-like portions 21 are provided substantially in parallel, the force applied to the side surface of the step portion of the foot acts substantially evenly, and a good fit can be obtained on the entire foot. In addition, the elastic member 1 and the strip | belt-shaped part 21 can be provided in the inner side and / or the outer side of a leg | foot.

  In addition, a sheet-like sheet member that covers a central portion of the instep of the foot and covers at least an upper part of the plurality of the strip-shaped portions 21 is provided between the instep and the strip-shaped portion 21. You may provide further so that it may be inserted in. In this case, since the belt-like portion 21 does not directly hit the instep, no uncomfortable feeling is generated on the instep. This sheet member is preferably formed of a material having elasticity and elasticity.

In the above-described embodiment, the non-stretchable member 2 is provided with a plurality of linear strips 21 as an example. However, the shape of the non-stretchable member 2 is not limited to the strip-shaped portion 21. .
As the non-stretchable member 2, for example, as shown in FIG. 4 (a), in addition to a sheet-like one that covers most of the side surface of the foot, or in addition to the step part of the foot as shown in FIG. 4 (b). It is possible to employ a belt-like portion that extends to the stepping portion and the heel portion. Further, as the shape of the non-expandable member 2 that covers the side surface of the stepped portion of the foot, for example, a U-shaped member (FIG. 4C), a yo-shaped member (FIG. 4D), or a U-shape A member using a linear member and a linear member (FIG. 4E) or a combination thereof can be employed. In addition, in each figure of FIG. 4, in order to clarify the position of the non-expandable member 2, the said member is hatched.

As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily understand various changes and modifications within the obvious scope by looking at the present specification.
For example, in the above embodiment, a shoelace is used as the fastening member, but the fastening member is not necessarily limited to such a member, and a cover material made of a belt or a stretch material can be used as the fastening member. These can be used as a tightening member in combination with a shoelace.
Moreover, in the said Example, although a strip | belt-shaped part and an expansion-contraction member are joined in two places, the 1st junction part of the lower end part of a strip | belt-shaped part, and the 2nd junction part of an upper end part, Furthermore, in the central part vicinity of a strip | belt-shaped part. Both of them may be joined, or only in two places near the center and the first joint, or only in two places near the center and the second joint. Similar effects can be obtained.
Moreover, in the said Example, although the expansion-contraction member is arrange | positioned so that it may become the outer side (front side) of a non-expansion member, it arrange | positions so that an expansion / contraction member may become the inner side (back side) of a non-expansion member conversely. May be.
Accordingly, such changes and modifications are to be construed as within the scope of the present invention.

  The present invention can be used for various sports shoes in addition to athletics.

(A) is the outer side view of the shoes concerning the Example of this invention, (b) is the outer side view of the state which removed the elastic member and the sole from the shoes. (A), (b) is the II-II sectional view taken on the line of FIG. It is the III-III sectional view taken on the line of FIG. (A)-(e) is a schematic outer side view which shows the modification of a non-expandable member. (A), (b) is a figure which shows the example of a process of a non-expandable member.

Explanation of symbols

1: Stretchable member 2: Non-stretchable member 21: Band-shaped portion 31: First joint portion 32: Second joint portion 4: Non-joint portion 5: Shoelace 6: Reinforcement member 7: Sole L: Foot length direction P: Tightening direction

Claims (5)

An upper tightening structure for wrapping the instep,
An elastic member that wraps at least part of the side surface of the foot and has essentially elastic properties;
A non-stretchable member that wraps at least a part of the side surface of the foot and that is essentially difficult to extend in the tightening direction from the side surface of the foot toward the center of the instep,
A tightening member that pulls the non-stretchable member in the tightening direction;
The stretchable member overlaps at least a part of the non-stretchable member, and the stretchable member and the non-stretchable member are joined to each other at two joint portions separated in the tightening direction,
At the time of non-clamping, the length of the non-joint part between the two joints in the fastening direction is formed so that the non-stretchable member is longer than the stretchable member. In between, the non-stretchable member is loose,
On the other hand, when tension is applied to the non-stretchable member by the tightening member, the stretchable member is allowed to extend until it reaches a state commensurate with the length of the non-stretchable member in the tightening direction. An upper tightening structure characterized in that the non-stretchable member does not extend beyond a length commensurate with the length in the tightening direction. An upper tightening structure for wrapping the instep,
An elastic member that wraps at least part of the side surface of the foot and has essentially elastic properties;
On the side of the foot, a non-stretchable member having a plurality of belt-like portions that are formed long in the direction from the upper surface of the sole toward the center of the instep and are essentially difficult to stretch;
A tightening member that pulls the non-stretchable strip in the longitudinal direction of the strip;
The elastic member and the belt-like portion are joined to each other at two joints separated in the longitudinal direction of the belt-like portion,
At the time of non-clamping, the band-shaped part is formed so that the band-shaped part is longer than the elastic member at the non-bonded part between the two bonded parts, and the band-shaped part is loosened between the two bonded parts. ,
On the other hand, when tension is applied to the belt-like portion by the tightening member, the stretchable member is allowed to extend until it reaches a state commensurate with the length of the belt-like portion, and the length of the belt-like portion. The upper tightening structure is characterized in that it does not extend more than the state suitable for.   3. The upper tightening structure according to claim 2, wherein the non-joined portions of the plurality of strip-shaped portions are covered with the elastic member so as not to be seen from the outside.   4. The upper tightening structure according to claim 2, wherein the plurality of belt-shaped portions are provided on at least one of inner and outer side surfaces of a footless portion. In Claim 2, 3 or 4, among the joints, the first joint is provided in the vicinity of the sole, the second joint is provided in the vicinity of the center of the instep, and the second joint is attached to the foot. An upper fastening structure further comprising a non-stretchable reinforcing member connected along the length direction.

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