JP2019033923A - Shoelace and shoe - Google Patents

Abstract

To provide a shoelace facilitating shoelace insertion work and tightening adjustment work more than the conventional shoelace capable of retaining the tightening of a shoe without tying.SOLUTION: The shoelace comprises: knurled areas 5 respectively formed, on both sides in a shoelace longitudinal direction, by juxtaposing a plurality of knurled portions 4 whose diameter is larger than a bore of shoelace holes 3 provided on the left/right of an instep part 2 of a shoe 1, that are configured to be stretchably and elastically deformed, and that are stretched and elastically deformed in a direction of a pulling operation by a pulling operation so as to be deformed into a small diameter shape smaller than the bore of the shoelace hole 3: and a fixed-thickness area 6 that is formed across a substantially whole area between the respective knurled areas 5, that has a diameter smaller than the bore of the shoelace hole 3, and that is formed into a substantially fixed thickness.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a shoelace that can maintain the tightened state of the instep portion of a shoe without tying, and a shoe including the shoelace.

  Conventionally, as this type of shoelace, for example, there is one disclosed in Patent Document 1 (hereinafter referred to as a conventional example).

  In this conventional example, a tube-like string body made of an elastic material having a loop that is repeatedly arranged at intervals and whose diameter changes depending on the magnitude of the axial tension applied to itself, and the tube structure of the string body. The central tube part is made of a non-stretchable material in the center tube part, forming the core of the hump, and the center string that is rounded at the corresponding part of the hump so as to follow the change in the distance between both ends of the hump according to the diameter change In order to reduce the diameter of the hump by applying axial tension, pass the string through the string hole in this state, and after passing through the string hole, decrease the axial tension applied to the string. It is inflated so that the diameter of the hump becomes larger, and this hump expands and catches on the string hole, so that a fixing effect can be obtained without tightening the string. Possible One in which the.

  Therefore, for example, when this conventional example is used as a shoelace, the tightening force does not loosen even if the knots run on each lace hole and the shoe fits securely in the foot. The effect is demonstrated.

  However, when this conventional example is used as a shoelace, a large number of knots formed on the entire string must pass almost all through a large number of lace holes provided on the instep part, and the stringing work is performed. It becomes very troublesome.

  Also, when adjusting the tightening state, all the bumps must be moved in the same manner, and there is an inconvenience that the tightening condition cannot be easily adjusted.

  Under such a background, the applicant of the present invention is in a shoelace that can maintain the tightened state of the instep of the shoe without tying the shoe, in order to solve the above-mentioned problem that occurs in this conventional example. The shoelace which can perform a stringing operation | work and a tightening condition adjustment work easily is proposed (patent document 2).

  This shoelace proposed by the present applicant has a region where a large-diameter hump part larger in diameter than the string-passing hole is provided, from the end side in the longitudinal direction of the string, specifically from the usual last string-passing hole. Only the predetermined range of the leading end side part of the string on both sides of the string that is pulled out and released is sandwiched between the other areas, that is, the large-diameter hump area part that is provided in parallel on the both sides of the string. The middle part of the string has a structure in which a plurality of small-diameter humps configured to be elastically deformable with a smaller diameter than the hole diameter of the string-through hole are arranged in parallel with each other at an interval. The number of large-diameter humps to be passed is reduced to facilitate the stringing operation and the tightening adjustment operation.

Japanese Patent No. 5079926 Japanese Patent Application No. 2006-240250

  The present invention is a further improvement of the invention relating to the shoelace previously proposed by the present applicant (Japanese Patent Application No. 2016-240250), which facilitates the stringing work and the tightening adjustment work, and is more excellent. An object of the present invention is to provide a shoelace that exerts an instep tightening action.

  The gist of the present invention will be described with reference to the accompanying drawings.

  It is formed on the both sides in the longitudinal direction of the lace to have a diameter larger than the diameter of the lace through hole 3 provided on the left and right of the instep portion 2 of the shoe 1 and is configured to be elastically deformable in a stretchable manner. There is provided a hump region portion 5 formed by juxtaposing a plurality of convex portions 4 that are elastically deformed in a direction and deformed to a diameter smaller than the diameter of the string passage hole 3, and is inserted into the string passage hole 3. By pulling the hump region portion 5 pulled out through the last string passage hole 3 while being attached to the instep portion 2, the hook shape is locked inside the string passage hole 3. The portion 4 is stretched and elastically deformed by the pulling operation so as to have a smaller diameter than the string passing hole 3 and can be moved through the string passing hole 3 to be tightened. In this tightened state, the pulling operation is performed. By releasing the string passing hole 3 The hump-like portion 4 returns from the small diameter shape to a non-deformed state larger than the hole diameter of the original string-passing hole 3 and is deformed so that it cannot move back and move with respect to the string-passing hole 3. Thus, in a shoelace configured such that the state of being tightened by the pulling operation does not loosen without connecting the hump regions 5 drawn out from the last string passage hole 3, A constant thickness region portion 6 having a smaller diameter than the hole diameter of the string passage hole 3 and a substantially constant thickness is formed over substantially the entire area between the respective hump region portions 5 provided in the The constant-thickness region portion 6 is formed by a non-stretchable member 8 longer than the stretchable member 7 provided in a slack state on a tubular stretchable member 7, and is pulled in the longitudinal direction. When the action occurs, the stretchable member 7 undergoes elastic elastic deformation, and this elastic elasticity An elastic return force is generated in accordance with the shape, and the instep tightening action for tightening the instep portion 2 is generated by this elastic return force, and as the pulling action in the longitudinal direction increases, The stretchable member 7 extends in the pulling direction, the non-stretchable member 8 is less slackened, and when the non-stretchable member 8 is no longer slackened, the stretchable member 7 is not further stretched and deformed. The present invention relates to a shoelace that is configured.

  2. The shoelace according to claim 1, wherein a total length of each of the hump region portions 5 and a length of the constant thickness region portion 6 are set to be substantially equal.

  Further, the present invention relates to a shoe comprising the shoelace 9 according to any one of claims 1 and 2.

  Since the present invention is configured as described above, stringing work and tightening adjustment work are facilitated as compared with the conventional one.

  Furthermore, the constant-thickness region portion of the present invention increases the amount of elastic elastic deformation of the entire shoelace, improves the elastic return action caused by this elastic elastic deformation, and is superior to conventional ones. Demonstrate the upper part tightening action.

  Furthermore, since the constant thickness region portion has good passage mobility with respect to the string passage hole and also has good stretchability, the shoe is well fixed to the foot (with good tightening). However, it does not overstress the instep where the blood vessels are concentrated, and the tightening strength is adjusted naturally in response to changes over time such as swelling of the foot, maintaining good comfort. It also works well for foot health.

  As described above, the present invention provides an epoch-making shoelace excellent in practicality with good usability and good tightening action as compared with the conventional one.

It is a perspective view which shows a present Example. It is a front view which shows a present Example. It is a front view which shows the shoelace of a present Example. (A) It is explanatory explanatory drawing which shows the non-pull operation state (normal state) of the shoelace of a present Example. (B) It is explanatory expansion drawing which shows the expansion | extension elastic deformation state by the pulling operation of the shoelace of a present Example. (A) It is explanatory sectional drawing which shows the shoelace internal state in Fig.4 (a). (B) It is explanatory sectional drawing which shows the shoelace internal state in FIG.4 (b). It is explanatory drawing which shows the use condition (shoelace tightening state) of a present Example. It is explanatory drawing which shows the use condition (state after shoelace tightening cancellation | release) of a present Example. It is explanatory drawing which shows the state at the time of stringing hole penetration of the hump-shaped part (hump area | region part) of a present Example. It is explanatory drawing which shows the state after the stringing hole penetration of the hump-like part (hump area | region part) of a present Example. It is explanatory drawing which shows the state at the time of the threading hole insertion of the constant thickness area | region part of a present Example. It is explanatory drawing which shows the state which inserts and arrange | positions the shoelace free end part of the shoelace of a present Example to the shoelace front-end | tip latching part.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  The present invention is a constant thickness region formed in a substantially constant thickness with a diameter smaller than the diameter of the string passage hole 3 over substantially the entire region between the hump region portions 5 provided on both sides of the string longitudinal direction. Since the portion 6 is formed, when the constant-thickness region portion 6 is inserted into the shoe threading hole 3 of the shoe 1 and attached to the instep portion 2, it is smoothly passed without being caught. The work can be performed, and also in the tightening adjustment work, since there is no catch as in the stringing work, the adjustment work can be performed easily and smoothly.

  In addition, this type of conventional shoelace is provided with a larger or smaller hump portion over the entire shoelace, and more specifically, a stretchable elastically deformable portion and a non-stretchable connection. Since the connecting portion is non-stretchable in the pulling operation, only the hump portion is elastically deformed in the pulling operation. 6 does not have the above-described non-stretchable connecting portion, and the entire constant thickness region portion 6 is elastically deformed so as to be stretchable. Therefore, according to the present invention, the hump region portion 5 where the hump-like portion 4 is disposed in the pulling operation Is elastically deformed in the same manner as in the prior art, but the constant-thickness region portion 6 undergoes a larger elastic deformation due to the absence of the non-stretchable connecting portion. Elongation elastic deformation becomes larger, therefore elastic recovery accompanying this elastic expansion deformation Also increased use, so that the clamping action on the instep portion 2 is further improved.

  In addition, the constant-thickness region portion 6 is formed by forming a non-stretchable member 8 longer than the stretchable member 7 in a slack state on a stretchable member 7 formed in a tubular shape, and is pulled in the longitudinal direction. When the action occurs, the stretchable member 7 is stretched and elastically deformed, and the slackness of the non-stretchable member 8 is reduced. Even if the constant region portion 6 is pulled, it can be configured to have an extension restricting function that does not extend any further. The tightening adjustment work can be performed.

  As described above, the present invention solves the problems in the conventional example, and in the shoelace 9 that can maintain the tightened state of the instep portion 2 of the shoe 1 without tying, It becomes the shoelace excellent in practical use which can perform adjustment work still more easily.

  Specific embodiments of the present invention will be described with reference to the drawings.

  A present Example is the shoes 1 which comprise the shoelace 9 which can hold | maintain the tightened state of the instep part 2 even if it does not tie of this invention.

  Specifically, the shoelace 9 of the present embodiment is formed to have a diameter larger than the diameter of the string passage hole 3 provided on the left and right sides of the instep portion 2 of the shoe 1 on both sides in the longitudinal direction of the shoe 1 and expands and contracts. A hump region portion 5 which is configured to be freely elastically deformed, and is formed by a plurality of juxtaposed portions 4 which are elastically deformed in the pulling operation direction by a pulling operation and deformed to a smaller diameter than the hole diameter of the string passage hole 3. And a constant thickness region portion 6 having a diameter smaller than the diameter of the string-through hole 3 and a substantially constant thickness over substantially the entire area between the respective hump region portions 5. By pulling the hump region portion 5 drawn through the last string passage hole 3 while being inserted into the string passage hole 3 and attached to the instep portion 2 of the shoe 1, The hook-like portion 4 to be locked inside is stretched and elastically deformed by a pulling operation, and has a smaller diameter than the string passage hole 3. The knot-like portion 4 that has passed through the string-through hole 3 is changed from the small-diameter shape by releasing the pulling operation in this tightened state. Each piece pulled out from the last string-passing hole 3 by returning to the non-deformed state larger than the diameter of the string-passing hole 3 and being unable to return and move with respect to the string-passing hole 3 Even if it does not connect the hump area | region parts 5, it is comprised so that the state tightened by pulling operation may not loosen.

  More specifically, the hump region portion 5 is configured by the hump-like portion 4 described above and a connecting portion 10 that is interposed between the hump-like portions 4 and connects the hump-like portions 4 to each other. And the hump area | region part 5 of a present Example is set as the structure by which the hump-shaped part 4 and the hump connection part 10 are alternately arrange | positioned regularly along a string longitudinal direction.

  Further, the plurality of hump-like portions 4 provided in the hump region portion 5 are formed in a substantially spherical body having a diameter larger than the hole diameter of the string passage hole 3, and pass through the string passage hole 3 as it is (shape). If, for example, both ends in the longitudinal direction of the hump region portion 5 are pulled by hand, the hump-like portion 4 is stretched and elastically deformed in the pulling operation direction by this pulling operation, and the string passage hole 3 It is deformed into a shape smaller than the hole diameter, for example, a shape like a rugby ball, so that it can pass through the string-through hole 3 (shape). It is set as the structure restored | restored in the state of a substantially spherical body of a larger diameter than the hole diameter of the string passage hole 3.

  Further, the hump region portion 5 of the present embodiment has the stringing portions arranged side by side on the left and right sides of the instep portion 2 while the hump-like portion 4 is stretched and elastically deformed by a pulling operation so as to have a smaller diameter than the string passage hole 3. After passing through the hole 3 and tightening, the pulling operation is stopped and the hump-like portion 4 is larger in diameter than the original string-passing hole 3, that is, in other words, cannot pass through the string-passing hole 3. When the diameter-shaped hump-like portion 4 is restored, the restored hump-like portion 4 is positioned closest to the mouth of the string passage hole 3 arranged side by side on the left and right of the instep portion 2 of the shoe 1. The length is set such that only the last string passage hole 3 or only the last string passage hole 3 and the string passage hole 3 immediately before it is returned and locked.

  Specifically, the hump region portion 5 of the present embodiment is set to a length that is about 1/4 of the entire length of the shoelace 9. That is, in the shoelace 9 of this embodiment, when the hump region portions 5 on both sides in the longitudinal direction of the strap are combined, the hump region portion 5 occupies about half the length of the shoelace 9, and the other half is described later. The constant thickness region portion 6 occupies the structure.

  Further, the hump region portion 5 of the present embodiment will be described. The hump region portion 5 of the present embodiment has an amount of elastic deformation of the hump region portion 5 (specifically, the hump-shaped portion 4) during the pulling operation. It is set as the structure which comprises the expansion-deformation restriction | limiting mechanism to restrict | limit.

  Specifically, the hump region portion 5 of the present embodiment includes a hump-like portion forming bulge portion 11 for forming the hump-like portion 4 and a hump-connecting portion-forming capillary tube for forming the hump-connecting portion 10. 12 is formed of a tubular hump region forming stretchable member 13 formed alternately, and a string-like hump region forming non-stretchable member 14 inserted and disposed in the hump region forming stretchable member 13. When the pulling action is generated in the longitudinal direction, the elastic member 13 for forming the hump region is elastically deformed and elastically restored to the hump region portion 5 with the elastic deformation of the elastic member 13 for forming the hump region. Force is generated, and the instep tightening action for tightening the instep portion 2 is generated by this elastic return force.

  Further, the non-stretchable member 14 for forming the hump region is set to a length longer than the stretchable member 13 for forming the hump region, and is inserted and disposed in the stretchable member 13 for forming the hump region. The elastic member 13 for forming the hump region is disposed in a slack state in the bulging portion 11 for forming the hump-like portion, and when a tensile action occurs in the longitudinal direction, the elastic deformation of the hump-like portion forming bulging portion 11 is deformed. Accordingly, the slackness is reduced, the slackness of the hump region forming non-stretchable member 14 is eliminated, and the stretched state of the hump region forming stretchable member 13 is restrained from being stretched. Further, the elastic deformation of the hump-like portion 4 is limited.

  Further, as described above, the constant thickness region portion 6 of the present embodiment is formed to have a diameter that is smaller than the diameter of the string passage hole 3 and substantially constant, and is provided on both sides of the shoelace 9 described above. The length is set over substantially the entire region between the hump regions 5.

  Specifically, the constant-thickness region portion 6 of the present embodiment is configured such that when the shoelace 9 is attached to the instep portion 2 of the shoe 1 (the left and right alternates in the through-holes 3 provided on the left and right sides of the instep portion 2). The length is set to a length that occupies 1/2 or more of the entire instep portion 2 (provided to pass through 1/2 or more).

  In addition, the constant thickness region portion 6 of the present embodiment is configured to include an extension deformation limiting mechanism, like the above-described hump region portion 5.

  Specifically, the constant-thickness region portion 6 of the present embodiment has a non-stretchable member 8 that is longer than the stretchable member 7 inserted into a tubular stretchable member 7 in a slack state. When the pulling action is generated in the longitudinal direction, the elastic member 7 is elastically deformed elastically and an elastic restoring force is generated along with the elastic elastic deformation, and the instep part 2 is tightened by the elastic restoring force. In addition to the configuration in which the instep tightening action occurs, as the tensile action in the longitudinal direction increases, the stretchable member 7 extends in the pulling direction, and the non-stretchable member 8 decreases in slackness. When the slack of the member 8 is eliminated, the stretchable member 7 is configured not to be extended and deformed any more. In the present embodiment, the stretchable member 7 and the stretchable member 13 for forming the hump region are formed integrally with a stretchable material (elastic material) such as natural rubber or synthetic rubber, The non-stretchable member 8 and the non-stretchable member 14 for forming the hump region are configured to be integrally formed of a non-stretchable material such as polyester, nylon, acrylic, or polyurethane.

  Further, the shoe 1 of the present embodiment including the above-described shoelace 9 is configured in a general sneaker shape as shown in the figure, and a plurality of string-through holes are provided on the left and right sides of the instep part 2 respectively. 3 is juxtaposed along the direction from the shoe tip to the wearer's mouth.

  Further, the shoe 1 according to the present embodiment is positioned on the side of the mouth of the shoelace 9 inserted through the lace hole 3, that is, inserted through the lace hole 3, on the left and right side surfaces. A configuration in which a shoelace tip locking portion 16 for locking the shoelace free end portion 15 of the shoelace 9 that has been pulled out outwardly through the last strap passage hole 3 to the shoe 1 is provided. It is said that.

  Specifically, the shoelace tip locking portion 16 of this embodiment cannot pass the non-deformed hump-like portion 4, but passes the hump-like portion 4 that has been deformed to be reduced in diameter by pulling operation. It is set as the structure which has the through-hole 17 set to the diameter dimension substantially equivalent to the string through-hole 3 which can do.

  That is, the shoelace tip locking portion 16 of the present embodiment has a hump-like portion at the shoelace free end portion 15 by manually pulling the shoelace free end portion 15 pulled out from the last cord passage hole 3. 4 is expanded and reduced in diameter and inserted into the through-hole 17 of the shoelace free end 15 and then the pulling operation is stopped and the hump-like portion 4 that has been extended and reduced in diameter cannot pass through the through-hole 17 as it is. By restoring to the original state, even if the shoelace 9 returns and the moving action occurs, the hump-like portion 4 of the shoelace free end portion 15 is attached to the peripheral portion of the through-hole 17, that is, the shoelace tip locking portion 16. It is configured so that the return movement of the shoelace 9 is prevented by locking back.

  That is, the present embodiment has a double locking structure that holds the tightened state of the shoelace 9 at two locations of the shoelace tip locking portion 16 together with the last string passage hole 3, The state is maintained well, and the tightened state of the instep part 2 of the shoe 1 is well maintained without tying the shoelace 9.

  Further, the shoelace tip locking portion 16 of the present embodiment will be described. The shoelace tip locking portion 16 of this embodiment includes the last strap passage hole 3 located on the foot opening side of the instep portion 2 of the shoe 1. Before inserting the last lace through hole 3, the shoe 1 is more than on the lace passing direction extension line connecting the lace through hole 3 just before the last lace through hole 3 on the opposite side where the shoe lace 9 is inserted. Specifically, in the present embodiment, it is configured to be provided almost directly below the last string passage hole 3.

  That is, in this embodiment, the shoelace free end portion 15 of the shoelace 9 that has passed through the last strap passage hole 3 and pulled out outward is locked to the tip of the shoelace located just below the last strap passage hole 3. When the shoelace 9 is bent largely by the last lace passage hole 3 by being inserted into the through hole 17 of the portion 16 and the direction of routing is changed, and the movement action is returned to the lace 9, this bent portion is It becomes a resistance part with respect to a return movement effect | action, and is comprised so that it may become difficult to move back.

  Furthermore, the through-hole 17 provided in the shoelace tip locking portion 16 of the present embodiment is configured to be perforated in the direction along the side surface of the shoe 1, and the shoelace pulled out from the last strap-through hole 3. Pull the free end 15 by hand to deform the hump 4 on the free end 15 of the shoelace to reduce the diameter and insert it into the through-hole 17 and then stop the pulling operation. When the hump-like portion 4 that has been deformed and reduced in diameter is restored to its original state where it cannot pass through the through-hole 17 as it is, the shoelace free end portion 15 through which the through-hole 17 is inserted extends along the side surface of the shoe 1. It is configured to be positioned in the installed state.

  That is, the shoelace tip locking portion 16 of the present embodiment is configured as the last holding portion that holds the tightened state of the shoelace 9, and the shoelace free end portion 15 of the surplus shoelace 9 is in motion. It is set as the structure which acts as a shoelace edge part positioning part fixed to a predetermined position so that it may not flutter.

  The operational effects of the present embodiment configured as described above will be described below.

  In the present embodiment, the knuckle-shaped portion 4 provided in the hump region portion 5 is stretched and reduced in diameter while the shoelace 9 is pulled by hand, and a plurality of juxtaposed portions on the left and right of the instep portion 2 of the shoe 1 are provided. The shoelaces 9 are inserted through the stringing holes 3 alternately, and the shoelaces 9 are routed around the instep part 2 in a crossing manner. The shoelaces 9 are freely passed through the last stringing holes 3 and drawn outward. After the end portion 15 is pulled and tightened, the shoelace free end portion 15 is further inserted into the through-hole 17 of the shoelace tip locking portion 16 and then the last lace-through hole is removed. The knot-like portion 4 that has passed through 3 and the knot-like portion 4 that has passed through the through-hole 17 of the shoelace tip locking portion 16 are released from the expansion and reduction in diameter. When the original shape that cannot pass through 17 is restored and the shoelace 9 returns and moves, the hump that has passed through the last lace-through hole 3 (Specifically, the hump-like portion 4 closest to the outlet side of the last string passage hole 3) engages with the peripheral edge (eyelet member) of the last string passage hole 3 and also locks the shoelace tip. The hump-like portion 4 (specifically, the hump-like portion 4 closest to the outlet side of the through-hole 17) that has passed through the through-hole 17 of the portion 16 is the peripheral portion of the through-hole 17, that is, the shoelace end locking Since the back movement of the shoelace 9 is stopped at two locations by being locked to the portion 16 and the tightened state of the shoelace 9 is well maintained, the tightened state of the instep portion 2 without tying the shoelace 9 Is securely held, it is not necessary to tie the shoelace 9.

  Further, in the present embodiment, the diameter of the shoelace 9 is smaller than the diameter of the string passage hole 3 and has a substantially constant thickness over substantially the entire area between the hump region portions 5 provided on both sides of the shoelace 9 in the string longitudinal direction. Since the constant thickness region portion 6 is formed, when the constant thickness region portion 6 is inserted into the lace-through hole 3 of the shoe 1 and attached to the instep portion 2, it is smooth. The stringing operation can be performed smoothly without being caught, and the tightening adjustment work can be easily and smoothly adjusted because there is no catch as in the stringing operation.

  In addition, this type of conventional shoelace is provided with a larger or smaller hump portion over the entire shoelace. Specifically, the shoelace is elastically deformable elastically, and non-stretchable. Since the connecting portions are alternately arranged with a gap, in the pulling operation, since the connecting portions are non-stretchable, only the hump portions are elastically deformed, but the thickness of this embodiment is constant. The region portion 6 does not have the aforementioned non-stretchable connecting portion, and the entire constant thickness region portion 6 is elastically deformed so as to be stretchable. Therefore, in the pulling operation, the hump region portion 5 where the hump-like portion 4 is disposed is conventional. However, the constant-thickness region portion 6 is subjected to a larger elastic deformation due to the absence of the non-stretchable connecting portion, and the entire shoelace 9 is more elastic than the conventional one. The deformation becomes larger, so the elastic return action accompanying this elastic deformation is also As a result, the tightening action on the instep portion 2 is further improved, thereby improving the fit of the shoe 1 to the foot, and in addition to the stretchability of the shoelace 9 as a whole, a constant thickness region Since the portion 6 can freely pass through the string passage hole 3, the degree of tightening urging of the instep portion, in other words, the tightness of the lace 9 with respect to the instep portion 2 is adjusted more smoothly and naturally.

  In other words, the foot is asymmetrical, and there are many blood vessels at the top of the instep. The blood flow is blocked by tightening with a shoelace, and the entire foot is swollen by walking or standing for a long time. Although this may worsen the blood flow of the entire body, this embodiment is able to adjust the tightening condition smoothly and naturally according to this swelling even if swelling occurs due to the above action during long walking or standing work. Therefore, the blood flow in the instep is not obstructed, and the occurrence of health damage due to the deterioration of the blood flow can be prevented.

  Furthermore, in the present embodiment, half of the shoelace 9 is a constant thickness region portion 6 without the hump-like portion 4, so that the hump-like portion 4 in the instep portion 2 is less, and the appearance looks further than the conventional product. It will be neat.

  The present invention is not limited to the present embodiment, and the specific configuration of each component can be designed as appropriate.

DESCRIPTION OF SYMBOLS 1 Shoes 2 Instep part 3 String passage hole 4 Hump part 5 Hump area part 6 Thickness constant area part 7 Stretchable member 8 Non-stretchable member 9 Shoelace

Claims (3)

  It is formed on the both sides in the longitudinal direction of the lace, with a diameter larger than the diameter of the lace-through hole provided on the left and right sides of the instep of the shoe, and is elastically deformable to extend and contract in the direction of the pulling operation. There is provided a hump region portion formed by juxtaposing a plurality of hoop portions that are elastically deformed and deformed to a diameter smaller than the diameter of the string passage hole, and is inserted into the string passage hole and attached to the instep portion. In this state, by pulling the hump region portion pulled out through the last string passage hole, the hook-like portion locked inside the string passage hole is stretched and elastically deformed by the pull operation. It is smaller in diameter than the stringing hole and can be moved and tightened through the stringing hole. By releasing the pulling operation in this tightened state, the knot that has passed through the stringing hole The shape part is the small diameter shape It is pulled back from the last string passage hole by returning to the undeformed state larger than the hole diameter of the original string passage hole and making it impossible to return and move with respect to the string passage hole. In the shoelace configured so that the state tightened by the pulling operation does not loosen without connecting the hump region portions, substantially the entire area between the hump region portions provided on both sides of the strap in the longitudinal direction. A constant-thickness region portion that is smaller in diameter than the hole diameter of the string passage hole and has a substantially constant thickness is formed, and the constant-thickness region portion is stretchable in a tubular shape. The member is provided with a non-stretchable member that is longer than the stretchable member in a slack state. When a tensile action occurs in the longitudinal direction, the stretchable member is elastically deformed. An elastic return force is generated, and the elastic return force causes the foot to The torso part tightening action for tightening the part is generated, and as the pulling action in the longitudinal direction increases, the stretchable member extends in the pulling direction, and the non-stretchable member reduces slackness. The shoelace is configured so that when the non-stretchable member is no longer loosened, the stretchable member is no longer stretched and deformed.   The shoelace according to claim 1, wherein a total length of each of the hump region portions and a length of the constant thickness region portion are set to be substantially equal.   A shoe comprising the shoelace according to any one of claims 1 and 2.

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