JP7187078B2 - shoelaces and shoes - Google Patents

Description

TECHNICAL FIELD The present invention relates to a shoelace that can keep the instep of the shoe in a tightened state without tying it, and a shoe equipped with this shoelace.

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

This conventional example consists of a tube-shaped string body made of an elastic material having bumps that are repeatedly arranged at intervals and whose diameter changes depending on the magnitude of the axial tension applied to the string body, and the tube structure of the string body. A center string made of a non-stretchable material in the central tube portion, which constitutes the core of the hump, and is rounded at the portion corresponding to the hump so as to follow the change in the distance between both ends of the hump according to the change in the diameter of the hump. It is constructed by applying axial tension to shrink the diameter of the hump, pass the string through the string hole in this state, and weaken the axial tension applied to the string after passing through the string hole Inflate so that the diameter of the hump increases, and when this hump expands, it catches in the lace hole, and a fixing effect (tightening and holding effect when tying the lace) can be obtained without going through the work of tying the lace. It is possible.

Therefore, for example, when this conventional example is used as a shoelace, the tightening force does not loosen even when the hump is engaged with each lace hole and exercise such as running is maintained, and the state in which the shoe is firmly fitted to the foot is maintained. The effect to be done is exhibited.

However, when this conventional example is used as a shoelace, almost all of the many bumps formed on the entire lace must be passed through the many lace holes provided on the instep, which makes the lacing work difficult. It becomes very troublesome.

Also, when adjusting the tightness, it is necessary to move all the bumps one by one, which is inconvenient because the tightness cannot be easily adjusted.

Against this background, the present applicant has proposed a shoelace that can keep the instep of the shoe in a tightened state without tying it, in order to solve the above-mentioned problems that occur in this conventional example. proposed a shoelace that facilitates lacing and tightening adjustment operations (Patent Document 2).

In the shoelace proposed by the present applicant, the region in which the large-diameter hump portion having a larger diameter than the lacing hole is provided is extended from the end side in the longitudinal direction of the lace, specifically, from the normal last lacing hole. Only a predetermined range of the string tip end side portions on both sides of the string that is pulled out and is in a loose state, and other regions, that is, large diameter hump portions provided on both sides of the string are sandwiched by a plurality of large diameter hump regions arranged side by side. The middle portion of the cord is configured to have a plurality of small-diameter bumps that are elastically deformable and have a diameter smaller than that of the lacing hole and are arranged side by side at intervals. The number of large-diameter hump portions to be passed through is reduced to facilitate string threading work and tightening adjustment work.

Japanese Patent No. 5079926 Japanese Patent Application No. 2016-240250

The present invention is a further improvement of the invention related to the shoelace (Japanese Patent Application No. 2016-240250) previously proposed by the present applicant, and facilitates the lacing 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.

On both sides in the longitudinal direction of the lace, a generally spherical body having a diameter larger than the diameter of the lace through holes 3 provided on the left and right sides of the instep 2 of the shoe 1 is elastically deformed in the longitudinal direction of the lace. A plurality of hump-like portions 4 elastically deformed by a pulling operation to deform into a shape smaller in diameter than the hole diameter of the stringing hole 3 and hump connecting portions 10 connecting the hump-like portions 4 are alternately connected. The hump region portion 5 passed through the last lacing hole 3 in a state of being inserted through the lacing hole 3 and arranged in the instep portion 2 and pulled out is the above-mentioned By pulling, the knob-shaped portion 4 engaged inside the lacing hole 3 is elongated and elastically deformed to have a diameter smaller than that of the lacing hole 3 and moves through the lacing hole 3 to tighten. By canceling the pulling operation in this tightened state, the hump-shaped portion 4 that has passed through the lacing hole 3 becomes larger than the original diameter of the lacing hole 3 from the small-diameter shape. By returning and deforming to a substantially spherical body with a large diameter and becoming unable to return and pass through the lacing hole 3, the hump regions 5 pulled out from the last lacing hole 3 are connected to each other. The shoelace is configured so that the tightened state does not loosen even if it is not worn, and the lacing holes 3 are provided over substantially the entire area between the hump regions 5 provided on both sides in the longitudinal direction of the lace. The constant thickness region 6 is formed to have a constant thickness smaller than the hole diameter of the tube and is elastically deformable. , and a cord-like member 8 which is longer than the tubular member 7 and is inserted into the tubular member 7 in a slack state. When arranged, the tubular member 7 is elongated and elastically deformed by the pulling operation, and elastic restoring force is generated with this elastic elastic deformation. In addition, as the tensile force in the longitudinal direction increases and the elastic deformation amount of the tubular member 7 increases, the slack of the string-like member 8 decreases and the slack of the string-like member 8 disappears. The shoelace is characterized in that the string-like member 8 is in a tense state so as to prevent further extension elastic deformation.

Further, in the shoelace according to claim 1, the constant-thickness region portion 6 has a length that extends over 1/2 or more of the entire instep portion 2 of the shoe 1 when the shoelace is worn. It relates to a shoelace characterized by being set to

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

Since the present invention is constructed as described above, it becomes easier to perform the threading operation and the tightening adjustment operation than in the conventional one.

Furthermore, due to the constant-thickness region of the present invention, the amount of elongational elastic deformation of the entire shoelace is increased, and the elastic recovery action that accompanies this elongational elastic deformation is improved. Exerts back tightening action.

Furthermore, since the constant-thickness region has good movement through the lacing hole and also has good stretchability, the shoe is well fixed to the foot (well tightened). ), the instep where blood vessels are concentrated is not overly compressed, and the tightening strength is naturally adjusted 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 is an epoch-making shoelace that is more convenient to use than the conventional one, has a good tightening action, and is excellent in practicality.

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 enlarged view which shows the non-pulling|pulling operation state (normal state) of the shoelace of a present Example. (b) It is an explanatory enlarged view showing an elastically deformed state due to the pulling operation of the shoelace of the present embodiment. (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 an explanatory view showing the state of use of the present embodiment (state after releasing the tightening of the shoelace). FIG. 5 is an explanatory view showing a state of the hump-shaped portion (hump region portion) of the present embodiment when it is inserted through a lacing hole; FIG. 4 is an explanatory view showing a state after the lacing hole of the hump-shaped portion (hump region portion) of the present embodiment is inserted; FIG. 10 is an explanatory view showing a state of the constant-thickness region portion of the present embodiment when it is inserted through a lacing hole; FIG. 4 is an explanatory view showing a state in which the shoelace free end portion of the shoelace of the present embodiment is inserted into the shoelace tip locking portion.

A preferred embodiment of the present invention will be briefly described with reference to the drawings showing the operation of the present invention.

The present invention is a constant-thickness region that is formed to have a diameter smaller than that of the lacing hole 3 and a substantially constant thickness over substantially the entire area between the hump regions 5 provided on both sides in the longitudinal direction of the cord. Since the part 6 is formed, when the constant thickness area part 6 is inserted into the lacing hole 3 of the shoe 1 and attached to the instep part 2, the lacing can be performed smoothly without catching. In addition, in the tightening adjustment work, as in the string threading work, there is no catching, so the adjustment work can be easily and smoothly performed.

In addition, conventional shoelaces of this type have large and small bumps arranged over the entire length of the shoelace. Since the connecting portions are non-stretchable, only the bumps are stretched and elastically deformed during the pulling operation. 6 does not have the above-mentioned non-stretchable connecting portion, and the entirety of the constant-thickness region portion 6 is elastically deformable. However, since the constant thickness region 6 does not have a non-stretchable connecting portion, the shoelace 9 as a whole undergoes a greater elongation elastic deformation than the conventional one. The extension elastic deformation is increased, and therefore the elastic recovery action associated with this extension elastic deformation is also increased, and the tightening action on the instep 2 is further improved.

Moreover, the constant-thickness region 6 is composed of a tubular stretchable member 7 and a non-stretchable member 8 that is longer than the stretchable member 7 and is provided in a slackened state. 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 fixed region part 6 is pulled, it can be configured to have an elongation limiting function that does not extend further, so that it does not stretch until it is torn off like a rubber cord, and it can be used as a shoelace by pulling it. Tightening condition adjustment work can be performed.

As described above, the present invention solves the problems in the conventional example, and provides a shoelace 9 capable of maintaining the tightened state of the instep 2 of the shoe 1 without tying the laces. The shoelace is excellent in practicality and can be adjusted more easily.

A specific embodiment of the present invention will be described with reference to the drawings.

This embodiment is a shoe 1 having a shoelace 9 capable of keeping the instep 2 in a tightened state without tying according to the present invention.

Specifically, the shoelace 9 of this embodiment is formed on both sides in the longitudinal direction of the lace so as to have a diameter larger than the diameter of the lace through holes 3 provided on the left and right sides of the instep 2 of the shoe 1, and is stretchable. A hump region portion 5 is formed by arranging a plurality of hump-like portions 4 arranged in parallel so as to be freely elastically deformable and elastically deformed in the direction of the pulling operation by a pulling operation so as to be deformed into a shape smaller in diameter than the hole diameter of the stringing hole 3 . and a constant-thickness region 6 having a smaller diameter than the lacing hole 3 and having a substantially constant thickness over substantially the entire area between the hump regions 5, The lacing hole 3 is closed by pulling the hump region 5 pulled out after passing through the last lacing hole 3 in a state of being inserted into the lacing hole 3 and attached to the instep 2 of the shoe 1. - 特許庁The knob-shaped part 4 locked inside is elongated and elastically deformed by a pulling operation and becomes a shape smaller in diameter than the lacing hole 3, so that it can be tightened by moving through the lacing hole 3, and in this tightened state. By canceling the pulling operation, the hump-shaped part 4 passing through the lacing hole 3 is deformed back from the small diameter shape to the non-deformed state having a larger diameter than the original lacing hole 3, and the lacing hole 3 is opened. By being in a state where it cannot return and pass through, the tightened state by the pulling operation will not loosen even if the hump regions 5 pulled out from the last lacing hole 3 are not tied together. ing.

More specifically, the nodule region portion 5 is composed of the nodule-shaped portions 4 described above and nodule connecting portions 10 interposed between the nodule-shaped portions 4 and connecting the nodule-shaped portions 4 to each other. The knob region portion 5 of this embodiment has a structure in which the knob-like portions 4 and the knob connecting portions 10 are regularly alternately arranged along the longitudinal direction of the cord.

Further, the plurality of bump-shaped portions 4 provided in the bump region portion 5 are formed in a substantially spherical body having a diameter larger than the hole diameter of the lacing hole 3, and pass through the lacing hole 3 in the state (shape) as it is. For example, if both ends in the longitudinal direction of the hump region portion 5 are pulled by hand, the hump portion 4 is stretched and elastically deformed in the direction of the pulling operation, and the string passing hole 3 is opened. It is deformed into a shape with a diameter smaller than the hole diameter, for example, a shape like a rugby ball, so that it can pass through the stringing hole 3 (shape). It is configured to be restored to the state of a substantially spherical body having a diameter larger than that of the lacing hole 3 .

In addition, the hump region portion 5 of the present embodiment is formed by stretching and elastically deforming the hump-shaped portion 4 by a pulling operation so as to make it smaller in diameter than the lacing hole 3, and the lacing loops provided on the left and right sides of the instep portion 2 are arranged side by side. After passing through the hole 3 and tightening it up, the pulling operation is stopped and the knob-shaped portion 4 is made larger in diameter than the original hole diameter of the lacing hole 3, that is, in other words, it is so large that it cannot pass through the lacing hole 3. When the diameter-shaped bump-shaped part 4 is restored, the restored bump-shaped part 4 is positioned closest to the opening side of the lacing holes 3 arranged side by side on the left and right sides of the instep part 2 of the shoe 1. The length is set so that it can be returned to only the last lacing hole 3, or only this last lacing hole 3 and the lacing hole 3 immediately before it.

Specifically, the hump region portion 5 of this embodiment is set to have a length of about 1/4 of the length of the entire shoelace 9 . That is, in the shoelace 9 of the present embodiment, when the bump regions 5 on both sides in the longitudinal direction of the lace are combined, the bump regions 5 occupy approximately half the length of the shoelace 9, and the remaining half will be described later. It is configured to be occupied by the constant-thickness region portion 6 .

Further, the knob region portion 5 of the present embodiment will be described. It is configured to have an extension deformation limiting mechanism for limiting.

Specifically, the nodule region portion 5 of the present embodiment includes a nodule-forming swelling portion 11 for forming the nodule-shaped portion 4 and a nodule-connecting-portion-forming thin tube portion for forming the nodule-connecting portion 10. 12 are alternately formed to form a tubular elastic member 13 for forming a hump region, and a string-like non-elastic member 14 for forming a hump region is inserted through the elastic member 13 for forming a hump region. When a tensile action is generated in the longitudinal direction, the elastic member 13 for forming the hump region is elongated and elastically deformed. A force is generated, and the instep tightening action of tightening the instep 2 is produced by this elastic restoring force.

In addition, the hump region-forming non-stretchable member 14 is set to have a length longer than that of the hump region-forming stretchable member 13, and when it is inserted and arranged in the hump region-forming stretchable member 13, When the elastic member 13 for forming a bump region is disposed in a slackened state within the swelling portion for forming a bump portion 11 and a tensile action is generated in the longitudinal direction, the swelling portion for forming a bump portion 11 is stretched and elastically deformed. The slackness of the hump region-forming non-stretchable member 14 is reduced, and the hump region-forming non-stretchable member 14 loses its slack and becomes tense, thereby suppressing the elongation elastic deformation of the hump region-forming stretchable member 13. , the extension elastic deformation of the hump-shaped portion 4 is restricted.

Further, as described above, the constant-thickness regions 6 of this embodiment are formed to have a diameter smaller than that of the lacing hole 3 and a substantially constant thickness, and are provided on both sides of the shoelace 9 described above. The length is set to cover substantially the entire area between the bump regions 5 .

Specifically, when the shoelace 9 is attached to the instep 2 of the shoe 1, the constant-thickness region 6 of the present embodiment can It is set to a length that occupies 1/2 or more of the entire instep 2 (when it is passed through and arranged over 1/2 or more).

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

Specifically, in the constant-thickness region portion 6 of this embodiment, a non-stretchable member 8 longer than the stretchable member 7 is inserted in a loose state through a stretchable member 7 formed in a tubular shape. When a tensile action occurs in the longitudinal direction, the stretchable member 7 is elongated and elastically deformed, and along with this elastic elastic deformation, an elastic restoring force is generated, and the instep 2 is tightened by this elastic restoring force. As the tension in the longitudinal direction increases, the elastic member 7 expands in the direction of tension and the slackness of the non-stretchable member 8 decreases. When the slack of the member 8 is eliminated, the stretchable member 7 is configured so as not to be elongated and deformed any more. In this embodiment, the stretchable member 7 and the hump region-forming stretchable member 13 are integrally formed of a stretchable material (elastic material) such as natural rubber or synthetic rubber. The non-stretchable member 8 and the hump area-forming non-stretchable member 14 are integrally formed of a non-stretchable material such as polyester, nylon, acrylic, polyurethane or the like.

Further, the shoe 1 of this embodiment equipped with the above-described shoelace 9 is, as shown in the figure, constructed in the shape of a general sneaker, and has a plurality of lacing holes on the left and right sides of the instep 2, respectively. 3 are arranged side by side along the direction from the toe to the opening.

Also, in the shoe 1 of this embodiment, the tip portions of the shoelaces 9 inserted through the lacing holes 3 are provided on the left and right side surfaces of the shoe 1, respectively. A shoelace tip engaging portion 16 is provided for engaging the shoelace free end portion 15 of the shoelace 9 passed through the last lacing hole 3 and pulled out to the shoe 1. It is said that

Specifically, the shoelace tip engaging portion 16 of this embodiment cannot pass the bump-shaped portion 4 in a non-deformed state, but allows the bump-shaped portion 4 that has been stretched and reduced in diameter by the pulling operation to pass through. It is configured to have a through hole 17 which is set to have a diameter dimension substantially equal to that of the stringing hole 3 in which the lacing hole 3 is formed.

That is, the shoelace tip locking portion 16 of the present embodiment is obtained by manually pulling the shoelace free end portion 15 pulled out from the last lace threading hole 3 to pull the hump-shaped portion of the shoelace free end portion 15. After the shoelace free end portion 15 is inserted into the through hole 17 by extending and reducing the diameter of the shoelace 4, the pulling operation is stopped and the bump-shaped portion 4 that is elongated and deformed to reduce the diameter cannot pass through the through hole 17 as it is. By restoring the original state, even if the shoelace 9 is returned and moved, the hump 4 of the free end 15 of the shoelace is attached to the peripheral edge of the through hole 17, that is, the locking portion 16 at the tip of the shoelace. It is configured to lock back and prevent the return movement of the shoelace 9 .

That is, this embodiment has a double locking (double lock) structure in which the shoelace 9 is kept in a tightened state at two points, the shoelace tip locking portion 16 and the last lace threading hole 3. The structure is such that the instep 2 of the shoe 1 is kept in good condition even if the shoelace 9 is not tied.

Further, the shoelace tip locking portion 16 of this embodiment will be described. , before the last lacing hole 3 is inserted, the shoe 1 is located on an extension line in the lacing direction connecting the lacing hole 3 immediately before the last lacing hole 3 on the opposite side through which the shoelace 9 is inserted. Specifically, in the present embodiment, it is provided almost immediately below the last lacing hole 3 .

That is, in this embodiment, the shoelace free end portion 15 of the shoelace 9 that has passed through the last lacing hole 3 and is pulled out is held at the shoelace tip end position just below the last lacing hole 3 . By inserting the shoelace 9 through the through hole 17 of the portion 16, the shoelace 9 is greatly bent at the last lace through hole 3 to change the pulling direction. It serves as a resistance portion against the return movement action, and is configured to make the return movement more difficult.

Furthermore, the through hole 17 provided in the shoelace tip locking portion 16 of this embodiment is formed in a direction along the side surface of the shoe 1, and the shoelace pulled out from the last lace through hole 3 The free end 15 is pulled by hand to stretch and deform the hump 4 on the shoelace free end 15 so that the hump 4 is inserted into the through hole 17, and then the pulling operation is stopped. When the hump-like portion 4 that has been stretched and reduced in diameter is restored to its original state in which it cannot pass through the through hole 17 as it is, the free end portion 15 of the shoelace, which is inserted through the through hole 17, extends along the side surface of the shoe 1. configured to be positioned in the set state.

That is, the shoelace tip locking portion 16 of the present embodiment is configured as the final holding portion for holding the tightened state of the shoelace 9, and the shoelace free end portion 15 of the surplus shoelace 9 is held during exercise. It is configured to act as a shoelace end positioning portion that is fixed in a predetermined position so as not to flutter.

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

In this embodiment, while pulling the shoelace 9 by hand, the hump-like portion 4 provided in the hump region portion 5 is stretched and deformed to have a smaller diameter, and a plurality of shoelaces are arranged side by side on the left and right sides of the instep portion 2 of the shoe 1, respectively. The shoelaces 9 are alternately passed through the lacing holes 3 on the left and right sides, and the shoelaces 9 are arranged in a crossing manner on the instep 2, and the shoelaces 9 are freed by passing through the last lacing holes 3 and drawn out. In a state in which the end portion 15 is pulled and tightened, the shoelace free end portion 15 is further inserted through the through hole 17 of the shoelace tip locking portion 16, and when the pulling operation is stopped, the last lace through hole is opened. 3 and each of the bumps 4 that passed through the through hole 17 of the shoelace tip locking portion 16 are released from the expansion and diameter reduction deformation, and each bump 4 passes through the lace through hole 3 and the through hole. When the shoelace 9 is restored to its original shape, unable to pass through the shoelace 17, and the shoelace 9 is moved back, the hump 4 that has passed through the last lace hole 3 (specifically, this last lace The hump 4 closest to the exit side of the through hole 3 is locked to the peripheral edge (eyelet member) of the last lace through hole 3, and the hump passed through the through hole 17 of the shoelace tip locking portion 16. The shaped portion 4 (specifically, the hump-shaped portion 4 closest to the exit side of the through hole 17) is engaged with the peripheral edge portion of the through hole 17, that is, the shoelace tip engaging portion 16 to secure the shoelace 9. The return movement of the shoelace is prevented at two points, and the tightened state of the shoelace 9 is well maintained, so that the tightened state of the instep 2 is reliably maintained without tying the shoelace 9. No need for 9 knots.

In addition, in this embodiment, the shoelace 9 has a diameter smaller than that of the lacing hole 3 and a substantially constant thickness over substantially the entire area between the hump regions 5 provided on both sides in the longitudinal direction of the shoelace 9. Since the uniform thickness region 6 is formed, when the uniform thickness region 6 is inserted into the lace hole 3 of the shoe 1 and attached to the instep 2, it is smooth. The string threading work can be performed smoothly without catching, and the tightening adjustment work can be easily and smoothly performed because there is no catching like the string threading work.

In addition, conventional shoelaces of this type have large and small bumps arranged over the entire length of the shoelace. Since the connecting parts are alternately arranged at intervals, only the hump part is stretched and elastically deformed in the pulling operation because the connecting part is non-stretchable, but the thickness is constant in this embodiment. The region portion 6 does not have the non-stretchable connection portion described above, and the entirety of the constant-thickness region portion 6 is elastically deformable. However, since the constant thickness region 6 does not have a non-stretchable connecting portion, it undergoes a greater elongation elastic deformation, and the shoelace 9 as a whole has a greater elongation elasticity than the conventional one. The deformation is increased, and accordingly, the elastic recovery action accompanying this elongation elastic deformation is also increased, and the tightening action on the instep 2 is further improved, thereby improving the fit of the shoe 1 to the foot, Moreover, in addition to the elasticity of the shoelace 9 as a whole, the constant thickness region 6 can freely pass through the lace hole 3. The degree of tightness with respect to the portion 2 is naturally adjusted more smoothly.

In other words, the foot is asymmetrical, and there are many blood vessels at the top of the instep. Tightening with shoelaces obstructs blood flow, and walking or standing for a long time causes the entire foot to swell. However, even if swelling occurs during long walking or standing work due to the above action, the degree of tightening can be adjusted smoothly and naturally according to the swelling. Therefore, the blood flow in the instep is not blocked, and the occurrence of health hazards due to deterioration of the blood flow can be prevented.

Furthermore, in this embodiment, since half of the shoelace 9 is the constant thickness region 6 without the bump 4, the number of the bumps 4 in the instep 2 is small, and the appearance is even better than that of the conventional product. It becomes clean.

It should be noted that the present invention is not limited to this embodiment, and the specific configuration of each component can be appropriately designed.

REFERENCE SIGNS LIST 1 shoe 2 instep 3 lace hole 4 hump 5 hump region 6 constant thickness region 7 tubular member 8 string member 9 shoelace
10 Knob connection

Claims (3)

It is formed on both sides in the longitudinal direction of the lace into a substantially spherical body having a diameter larger than the diameter of the lace through holes provided on the left and right sides of the instep of the shoe, and is elastically deformable so that it can be pulled in the longitudinal direction of the lace. a plurality of bump-shaped portions elastically deformed by elongation and deformed into a shape smaller in diameter than the hole diameter of the lacing hole, and a bump-shaped portion connecting portions connecting the bump-shaped portions are alternately connected. and by pulling the hump region that has been passed through the last lacing hole and pulled out in a state of being inserted through the lacing hole and arranged on the instep, the inner side of the lacing hole is pulled out. The hump-shaped portion engaged with is stretched and elastically deformed to become smaller in diameter than the lacing hole and can be tightened by moving through the lacing hole, and in this tightened state, the pulling operation is released. As a result, the hump-shaped portion that has passed through the lacing hole is deformed back from the small-diameter shape to a substantially spherical body having a larger diameter than the original lacing hole, and returns to the lacing hole. A shoelace configured so as to prevent loosening in a tightened state without tying the respective hump regions pulled out from the last lacing hole by being in a state of being unable to pass through, wherein Over substantially the entire area between the hump regions provided on both sides in the longitudinal direction of the string, it is formed to have a constant thickness smaller than the diameter of the stringing hole, and is elastically deformable in a stretchable manner. A constant area portion is provided, and the constant thickness area portion is composed of an elastically stretchable tubular member and a string-like member longer than the tubular member and inserted and arranged in the tubular member in a loose state. When the tubular member is inserted into the lacing hole of the shoe and placed on the instep, the tubular member is elastically deformed by the pulling operation, and elastic restoring force is generated along with the elastic deformation of the elastic. The instep portion of the shoe is tightened by the restoring force, and as the tensile force in the longitudinal direction increases and the amount of elastic deformation of the tubular member increases, the slackening of the string-like member increases. A shoelace characterized in that it is constructed such that the slack of the string-like member is eliminated and the string-like member is placed in a tense state, thereby preventing further expansion and elastic deformation. 2. The shoelace according to claim 1, wherein the constant thickness region is set to a length that extends over 1/2 or more of the entire instep of the shoe when the shoelace is worn. A shoelace characterized by: A shoe comprising a shoelace according to any one of claims 1 and 2.

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