JP4920480B2 - Tightening structure for sports shoes - Google Patents

Description

  The present invention relates to a tightening structure for sports shoes, and more specifically, it is possible to effectively regulate upper deformation that occurs during a side step, and furthermore, upper deformation is regulated by using deformation of a shoe mouth that occurs during a side step. The present invention relates to an improved tightening structure that can be made.

  As a tightening structure for sports shoes, for example, those shown in Japanese Patent Application Laid-Open No. 2003-125805 and Japanese Patent Application Laid-Open No. 8-317801 have been proposed.

  The tightening structure disclosed in Japanese Patent Application Laid-Open No. 2003-125805 includes a belt fastening mechanism 4 including belt members 41 and 42 respectively disposed on the inner and outer upper sides of the upper tortoise shell, and on the inner and outer upper sides of the upper forefoot portion. And a belt fastening mechanism 4 ′ composed of belt members 41 ′ and 42 ′ disposed respectively. The left and right belt members 41, 42 and 41 ′, 42 ′ of each belt fastening mechanism 4, 4 ′ are arranged at substantially symmetrical positions with the upper opening being sandwiched (paragraph [0036] of the same publication). reference).

  In the tightening structure shown in the gazette, each belt member is arranged symmetrically, so that when the belt members are pulled in opposite directions, the upper part is not twisted or wrinkled. The side part and the instep outer side part are pulled evenly, and the entire instep part of the wearer is held so as to be wrapped by the instep part of the shoe.

  The tightening structure shown in Japanese Patent Application Laid-Open No. 8-317801 has a front belt 3A disposed on the upper forefoot, a middle belt 3B disposed on the upper forefoot, and an upper portion of the upper instep. Belt 3 </ b> C.

  In the tightening structure shown in the publication, the front foot portion of the foot is tightened by tightening the front belt 3A, and the outer portion 1 is raised and the foot root portion is tightened by tightening the middle belt 3B and the rear belt 3C (paragraph [ In this way, the outer 1 is fitted to the foot.

  In the shoe tightening structure shown in each of the above publications, each part of the upper part is attached to the wearer's foot by tightening the belts respectively arranged corresponding to the forefoot part and the foot part of the upper part of the shoe. It is made to fit to the front foot part and the instep part, and is only configured to enhance the general fit as a shoe.

The inventors of the present application, as a result of earnestly researching the force acting on the athlete's foot during a side step in a ball game system such as volleyball and basketball with a lot of lateral movement, have resulted in the above-described conventional shoe tightening structure. Then, it was found that the deformation of the upper could not be sufficiently restricted during the side step, and that excessive pressure was applied to an inappropriate position of the wearer's foot at this time.
JP 2003-125805 A (see FIGS. 1 and 3) JP-A-8-317801 (see FIG. 2)

  The present invention has been made in view of the above-described conventional situation, and the problem to be solved by the present invention is to provide a tightening structure for a sports shoe that can effectively regulate the deformation of the upper that occurs during a side step. There is. The present invention is also intended to provide a tightening structure capable of regulating the deformation of the upper by utilizing the deformation of the mouth of the sports shoes that occurs during the side step.

  In general, the side step is an action of jumping in the lateral direction, but immediately before the jump, the wearer has shifted his leg to a kicking action after bending his / her foot.

  In such a side step, it is considered that a large pressure acts on the outer upper side of the shoe upper when the foot is landing. Therefore, the inventors of the present application first started by obtaining a distribution of force acting on the shoe upper when landing.

As shown in FIG. 17, eight pressure sensor sheets S _{1 to} S ₈ extending in the longitudinal direction are prepared, pressure sensor sheets S _{1 to} S ₃ are applied to the first finger T ₁ of the subject's foot, and pressure is applied to the second finger. The sensor sheet S ₄ , the pressure sensor sheet S _{5 on} the third finger, the pressure sensor sheet S _{6 on} the fourth finger, and the pressure sensor sheets S ₇ and S ₈ on the fifth finger, respectively. Here, for the first finger, the pressure sensor sheets S ₂ and S ₃ were arranged on the upper surface of the first finger, and the pressure sensor sheet S ₁ was arranged on the side surface (inner side surface) of the first finger. Also, the fifth finger, the pressure sensor sheet S ₇ on the upper surface of the fifth finger placed, was placed a pressure sensor sheet S ₈ to the fifth finger side (outer shell side). In FIG. 17, a curved line MJ indicates the middle foot joint joint of the foot.

Subject to wear the shoes in a state of being attached to the foot of the pressure sensor sheet S ₁ ~S _8, when he made a side step, each of the pressure sensor sheet S ₁ ~S ₈ is subjected to pressure from the upper of the shoe, but this time FIG. 18 is a pressure distribution diagram in which the pressures detected by the pressure sensor sheets S _{1 to} S ₈ are summarized in one figure.

In FIG. 18, a region R surrounded by a solid square corresponds to a region R surrounded by a dashed-dotted square in FIG. 17. Therefore, in FIG. 18, the upper side of the region R indicates the instep side, the lower side indicates the toe side, the right side indicates the outer side, and the left side indicates the inner side. Further, in FIG. 18, each section _S 1 to S ₈ in which graduated on the horizontal axis respectively correspond to the width of the pressure sensor sheet _S 1 to S ₈ of FIG. 17. Further, in FIG. 18, the darker the color, the higher the pressure.

As can be seen from FIG. 18, there are some places where high pressure is generated in the pressure sensor sheets S _{3 to} S ₅ , but high pressure is generated in most areas in the pressure sensor sheets S _{6 to} S ₈ . You can see that Further, when the position of the middle foot phalanx joint MJ written in FIG. 18 is seen, it can be seen that a high pressure is acting on the position of the fifth finger middle foot phalanx joint and its surrounding area.

  Therefore, at the time of landing of the foot during the side step, the position of the fifth toe joint joint of the wearer's foot and the surrounding area receive high pressing pressure from the upper of the shoe. A high pressing pressure acts on the upper part corresponding to the position of the middle toe joint joint of the finger and the surrounding area, and the upper part is deformed to the maximum.

On the other hand, FIG. 19 shows the distribution of the tensile stress generated in the upper due to the pressing pressure acting on the shoe upper from the foot when the foot is landed by computer simulation, and this is superimposed on the skeleton diagram of the foot. It is. In FIG. 19, in each reference numeral attached to the fifth finger, DP ₅ is the distal phalanx, MP ₅ is the middle phalanx, PP ₅ is the proximal phalanx, MB ₅ is the metatarsal bone, MJ Reference numeral ₅ denotes a metatarsal joint joint.

As shown in FIG. 19, the tensile stress generated in the upper is high at the fifth toe metatarsal joint MJ ₅ of the wearer's foot and its surroundings, which is almost in agreement with the result of FIG. ing.

  Next, when the foot is bent during the side step, as shown in FIG. 15 which is a side view of the inner side of the shoe, the heel portion H of the foot of the wearer P floats from the ground surface G, and the toes of the foot Only the portion T is in contact with the ground plane G. Further, at this time, as shown in FIG. 16, which is a view of the shoe of FIG. 15 as seen from the slightly upper front side of the figure, the wearer's P leg is inclined toward the inner side. In FIG. 16, the compression strain distribution of the shoe upper is also shown. Here, the “compression strain” of the upper is obtained by subtracting the original length from the length of the upper after the compression deformation. It is a value obtained by dividing the amount (compression deformation amount) by the original length. In FIG. 16, the darker the color, the greater the compression strain.

  As can be seen from FIG. 16, the compressive strain of the upper increases in the vicinity of the upper portion of the upper instep just above the first finger metatarsal head. Moreover, in the same figure, the part enclosed with the dotted line is equivalent to the 1st finger metatarsal bone part of a wearer's foot, and it turns out that the compressive strain in the said part is relatively small.

  In view of the above, the inventors of the present application wear one end of the tightening belt at the upper outer side of the shoe in order to effectively regulate the deformation of the upper that occurs when the foot is landing during the side step. It was thought that it should just stick to the upper outer side part corresponding to the 5th middle metatarsal joint of a person's foot and its circumference. Further, the inventors of the present application show that the upper belt has a large compressive strain just above the first finger metatarsal head when the foot is bent during the side step, so that the tightening belt of the shoe is just above the first finger metatarsal head. It was determined that it was preferable to provide the position at a position out of the range. Further, the inventors of the present application extend the other end of the tightening belt to an upper part corresponding to the first metatarsal bone part of the foot where the upper deformation is small in the upper inner side part. I thought that it would be better to stop.

The present invention has been made on the basis of the above consideration results, and the tightening structure of the sports shoe according to the invention of claim 1 of the present application is shown in the schematic diagram of FIG. An instep belt (1) disposed on the instep portion is provided. The instep belt (1) has a start end (A) fixed to the upper part at a position corresponding to the side surface of the fifth finger proximal phalanx (PP ₅ ) of the wearer's foot. A first belt member (10) having a terminal end (C) disposed on an upper portion corresponding to a position on the head of the foot bone (MB ₄ ), and a fifth finger metatarsal bone (MB ₅ ) Having a starting end (B) secured to the upper site of the corresponding position, having a terminal end (C) disposed on the upper site of the corresponding position on the fourth finger metatarsal bone (MB ₄ ), and A second belt member (11) in which the terminal end (C) coincides with the terminal end (C) of the first belt member (10); and the terminal ends of the first and second belt members (10, 11) ( A third belt extending from C) to the upper part of the first finger metatarsal (MB ₁ ) bone body side of the wearer's foot A member (12), and an instep belt tightening means for tightening the instep belt (1) via a third belt member (12), the instep belt (1) being an upper foot It is arranged in a substantially Y shape on the upper.

  In the present specification, the “bone body” refers to an intermediate portion of the bone excluding the bone head at the bone tip and the bone bottom at the bone end.

According to the first aspect of the present invention, the start ends (A, B) of the first and second belt members (10, 11) constituting the instep belt (1) are the fifth finger phalanges (PP ₅ ). Since it is placed in each upper part at the position corresponding to the side of the bone body and the position corresponding to the side surface of the fifth finger metatarsal (MB ₅ ), it acts on the upper from the foot when the foot is landing at the side step The first and second belt members (10, 11) can receive the pressing pressure to be performed substantially evenly, thereby effectively suppressing the deformation of the upper.

Further, in this case, the start ends (A, B) of the first and second belt members (10, 11) are not arranged at the position of the fifth toe metatarsal joint (MJ ₅ ) of the foot. When the fifth finger bends at the middle foot joint joint (MJ ₅ ) at the time of landing on the foot during the side step, the bending of the fifth finger is prevented from being obstructed by the belt members (10, 11). In addition, the foot contact with respect to the fifth finger can be improved.

Moreover, in this case, the instep belt (1) is arranged in a Y shape on the instep portion of the upper, and therefore when the third belt member (12) is tightened by the instep belt tightening means. The tension of the third belt member (12) acts on the V-shaped arrangement portions of the first and second belt members (10, 11). Then, it held as part of the fifth finger before and after the position of the fifth Yubichu metatarsophalangeal joints (MJ ₅₎ is sandwiched by the belt member (10, 11). Thereby, it becomes possible to reliably prevent the fifth finger of the foot from shifting in the front-rear direction within the upper of the shoe.

  On the other hand, in the case where the instep belt is simply disposed in the upper width direction as in the conventional tightening structure, the fifth finger of the foot moves in the front-rear direction within the upper when the foot is landed during the side step. There is a risk of slipping.

Here, the direction of the floor reaction force generated during the landing movement of the foot during the side step was measured, and the maximum shearing force direction acting on the sole was obtained. In FIG. It was found that the maximum shear force direction was generated in the direction extending from the center O in the region sandwiched between the arrow X direction and the arrow Y direction respectively extending from the center O within ₁ . On the other hand, the arrangement direction of the third belt member (12) is the direction from the start end (C) to the end point (D). In this case, the end point (D) is set as the first finger metatarsal (MB _1). ), The arrangement direction of the third belt member (12) is located in a region sandwiched between the arrow X direction and the arrow Y direction.

  Therefore, by arranging the start end (C) and end (D) of the third belt member (12) at the positions described above, the arrangement direction of the third belt member (12) substantially coincides with the maximum shearing force direction. Accordingly, the floor reaction force generated during the landing operation of the foot during the side step can be effectively supported by the third belt member (12).

Furthermore, according to the invention of claim 1, the terminal end (D) of the third belt member (12) avoids the first finger metatarsal (MB ₁ ) head position where the upper compressive strain is large at the time of bending, Since the first finger metatarsal (MB ₁ ) is disposed on the side of the bone body, the foot contact with the first finger can be improved.

  By the way, in the case of the shoe of the tightening structure described in FIG. 1 of the above-mentioned JP-A-2003-125805, the base end portion (42′a) of the second belt member (42 ′) is bifurcated. These bifurcated portions are all arranged parallel to the shoe width direction, and are not provided so as to intersect in a V shape on the upper as in the first aspect of the present invention. In addition, the front part of the bifurcated part is provided at a position that overlaps the fifth toe metatarsal joint of the wearer's foot.

In the invention of claim 2, the start ends (A, B) of the first and second belt members (10, 11) are arranged at positions away from the fifth finger metatarsal joint (MJ ₅ ). Yes.

In this case, when the fifth finger bends at the metatarsal joint (MJ ₅ ) at the time of landing of the foot during the side step, the bending of the fifth finger is inhibited by each belt member (10, 11). Can be reliably prevented.

In the invention of claim 3, the start end (B) of the second belt member (11) is disposed at a position corresponding to the vicinity of the head of the fifth finger metatarsal (MB ₅ ).

In this case, the crossing angle of the V-shaped arrangement portion by the first and second belt members (10, 11) becomes small, and the bone bottom of the fifth finger phalange (PP ₅ ) and the fifth Since the bone head of the metatarsal bone (MB ₅ ) is firmly held by the first and second belt members (10, 11), the fifth finger of the foot moves in the front-rear direction within the upper of the shoe. It becomes possible to prevent the displacement more reliably.

The start end (B) of the second belt member (11) is arranged at a position corresponding to the central portion of the fifth metatarsal bone (MB ₅ ) as described in the invention of claim 4. It may be.

As the position of the start end (B) of the second belt member (11), it is necessary to avoid at least the position of the head of the fifth finger metatarsal (MB ₅ ). Since MB ₅ ) is a long bone, the position of the start end (B) of the second belt member (11) is not limited to the position of the front side of the bone body of the _fifth metatarsal bone (MB ₅ ). The center position may be used. Thus, when the starting end position of the second belt member (11) is disposed at the upper part corresponding to the central position of the bone body of the fifth metatarsal bone of a standard foot, Even when there are individual differences in length and shape, the start position of the second belt member (11) is arranged in the vicinity of the center of the bone body of the fifth metatarsal bone of the wearer's foot. Become.

In the invention of claim 5, the terminal end (D) of the third belt member (12) is disposed at a position corresponding to the central portion of the first finger metatarsal (MB ₁ ) bone body.

  In this case, in FIG. 1, when the major axis of the sole is L, the arrangement direction of the third belt member (12) is approximately 70 ° from the major axis L. On the other hand, the arrow X direction is in the direction of 30 ° from the major axis L to the outer side, and the arrow Y direction is in the direction of 110 ° from the major axis L to the outer side. From this, it can be seen that the arrangement direction of the third belt member (12) coincides with the median direction of the arrow X direction and the arrow Y direction.

  Therefore, by arranging the position of the terminal end (D) of the third belt member (12) at the position described in the invention of claim 5, the arrangement direction of the third belt member (12) is averaged. It is possible to match the direction of the maximum shearing force, and thereby the floor reaction force generated during the landing operation during the side step can be more effectively supported by the third belt member (12).

  In the invention of claim 6, the instep belt tightening means is provided on the inner inboard side of the upper and passes through the third belt member (12), and the upper outer shell through the belt through. The third belt member (12) folded back is configured to be engageable and disengageable locking means for locking the third belt member (12) to the third belt member (12) or the upper outer side portion.

  In the invention of claim 7, the belt threading member is constituted by a D ring attached to a belt piece fixed to the upper inner side portion of the upper. In the invention of claim 8, the belt threader is formed on the sole constituting member of the shoe. It is comprised by the slit made.

  When the belt threader is composed of a D-ring, it is necessary to consider the position of the D-ring so as not to deteriorate the feeling of foot contact with the wearer's foot. There is no need to do. In the specification of the present application, the “D ring” is intended to include not only a D-shaped ring but also a ring having a rectangular shape or an elliptical shape.

  In the invention of claim 9, the sole constituent member is a resin plate disposed in the sole, and the slit is provided on a side portion of the plate. In this case, the strength as a slit can be secured.

  As described in the invention of claim 10, the plate may be a wave plate having a wave shape that advances in the front-rear direction.

  In this case, the slit can be provided by using a wave plate for preventing the sole from touching at the time of landing, and there is no need to provide a separate member such as a D ring.

  In the invention of claim 11, the sole constituent member is a midsole or an outsole.

  That is, in this case, the belt threading tool is configured by a slit formed in the midsole or the outsole.

In the invention of claim 12, as shown in the schematic diagram of FIG. 1, the shoe mouth is opened from the position (E) corresponding to the side surface of the _fifth metatarsal bone (MB ₅ ) through the upper instep of the upper. An instep upper belt (2) extending to the position (F) of the inner part of the shoe, and the upper instep belt (2) extends substantially in the width direction at the middle foot of the shoe. And an upper upper belt tightening means for tightening the upper upper belt (2). In FIG. 1, reference numeral CU indicates a wedge bone, CB indicates a cubic bone, NA indicates a scaphoid bone, CA indicates a radius, and TA indicates a talus.

  In this case, when the wearer's ankle inclines inward during the landing operation during the side step, the belt member (20) of the upper instep belt (2) corresponds to the opening of the shoe mouth. Since the third belt member (12) of the instep belt (1) is pulled upward toward the inner side of the shoe, the first and second belt members (10, 11) of the instep belt (1) are pulled. ) Can be tightened further. Thereby, it becomes possible to more firmly regulate the deformation of the upper outer side portion of the upper during the landing operation during the side step.

  If the pressing load acting on the upper outer side part at the time of landing at the side step is excessive or if the tightening pressure of the upper instep by the instep belt (1) is weak, When the outer step side of the upper is slightly deformed during landing at the side step, the instep belt (1) is pulled to the outer side, and as a result, the belt member (20) is pulled downward. Therefore, it becomes possible to tighten the shoe mouth, and the shoe and the foot can be integrated.

  In the invention of claim 13, the upper instep belt is disposed on the bottom side of the sole in the middle foot portion of the shoe.

  The term “sole” as used herein includes not only an outsole and a midsole, but also a plate member constituting the sole. The bottom surface side of the outsole refers to the grounding surface side.

  In the invention of claim 14, the upper instep belt is disposed in the width direction through a slit penetrating the sole in the width direction in the middle foot portion of the shoe.

  Similarly to the invention of claim 13, the term "sole" here includes not only an outsole and a midsole but also a plate member constituting the sole.

  In the invention of claim 15, the upper instep belt extends in the foot width direction along the upper surface or the lower surface of the insole in the upper portion of the shoe through the slit penetrating the upper in the width direction in the middle foot portion of the shoe. .

  In the invention of claim 16, either the upper instep belt or the third belt member has a D ring at one end, and the other of the upper instep belt or the third belt member passes through the D ring. After being folded, the upper upper belt belt, the third belt member, or the upper is detachably locked.

  In the invention of claim 17, the upper instep belt is provided integrally with the third belt member.

  In this case, the instep belt and the instep upper belt can be constituted by a single belt, and the tightening structure can be simplified, so that the tightening operation is facilitated.

  In the invention of claim 18, the upper instep belt is disposed outside the upper on the outer side of the shoe, and in the invention of claim 19, the upper instep belt passes through a slit formed in the upper on the outer side of the shoe. And disposed inside the upper.

  When the upper instep belt is disposed inside the upper, the attachment position of the locking means for the third belt member can be easily secured on the upper, The design of the shoes can be applied on the upper portion of the upper side arrangement portion.

  In the invention of claim 20, the upper upper belt tightening means includes a D ring attached to a mouth belt disposed on an inner side portion of a shoe mouth portion, and an upper outer shell through the D ring. The instep upper belt folded back to the upper instep belt or the upper outer side portion is configured to be detachable locking means.

  In the invention of claim 21, the upper instep belt tightening means is folded through the D ring attached to the tip of the upper instep belt, the wearing belt disposed in the wearing portion of the shoe, and the D ring. And a detachable locking means for locking the wearer belt to the wearer belt or the upper.

  As described above, according to the tightening structure of the sports shoe according to the present invention, the start ends of the first and second belt members constituting the instep belt are positioned at the position corresponding to the side surface of the fifth phalanx phalanx and the first position. Since it is arranged at each upper part at a position corresponding to the side surface of the five-finger metatarsal bone, the first and second belt members substantially apply the pressing pressure acting on the upper from the foot when landing on the side step. It is possible to receive evenly, and thereby it is possible to effectively regulate the deformation of the upper. Further, in this case, when the fifth finger bends at the middle foot phalanx joint at the time of landing of the foot during the side step, it is possible to prevent the bending of the fifth finger from being obstructed by each belt member. The foot contact with the finger can be improved. In addition, in this case, when the third belt member is tightened by the instep belt tightening means, the portion of the fifth finger at the front and rear positions of the fifth finger metatarsophalangeal joint is sandwiched between the belt members. Therefore, the fifth finger can be reliably prevented from shifting in the front-rear direction within the upper of the shoe. Further, the terminal end of the third belt member is located at the upper part at a position corresponding to the side surface of the first finger metatarsal bone body, which avoids the position of the first finger metatarsal head and has a small upper compressive strain during the bending operation. Since it arrange | positions, the foot contact at the time of bending operation can be made favorable. Further, the arrangement direction of the third belt member can be made to coincide with the direction of the maximum shearing force at the time of ground contact, so that the floor reaction force generated during the landing operation at the side step can be effectively achieved by the third belt member. Will be able to support.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
<First embodiment>
2 to 4 show a volleyball shoe according to a first embodiment of the present invention. FIG. 2 is a schematic side view of the outer side of the shoe, FIG. 3 is a schematic plan view of FIG. 2, and FIG. FIG. 4 is a schematic side view of the inner side of FIG. 2. 2, 3 and 4, only the front foot portion of the shoe is indicated by a solid line, and the rear side portion thereof is indicated by a two-dot chain line. 3A corresponds to the alternate long and short dash line in FIG.

  As shown in these drawings, the volleyball shoe 100 includes a sole 101 and an upper 102 fixed on the sole 101. An instep belt 1 constituting a tightening structure is disposed on the instep portion of the upper 102.

  The instep belt 1 includes upper and lower belt members 10 and 11 that are arranged so as to intersect in a substantially V shape on the outer side of the upper 102, and an upper portion from the intersection of the belt members 10 and 11. 3 and a third belt member 12 extending to the inner side. The instep belt 1 is disposed in a substantially Y shape on the instep portion of the upper 102.

  The first belt member 10 extends from the start end A to the end C, and the second belt member 11 extends from the start end B to the end C. The first belt member 10 is fixed to the upper 102 at the start end A, and the second belt member 11 is fixed to the upper 102 at the start end B. The third belt member 12 extends from the terminal C of the first and second belt members 10 and 11 to the terminal D, starting from the terminal C.

Here, each end A, B, C, D corresponds to each end A, B, C, D in FIG. That is, the start end A is disposed at the upper part of the wearer's foot at a position corresponding to the _fifth phalanx PP ₅ bone side, and the start B is the fifth finger metatarsal MB ₅ skeleton side. The terminal C is arranged on the upper part at a position corresponding to the head of the fourth finger metatarsal MB ₄ . End D is arranged in the upper part of the position corresponding to the first Yubichu metatarsal MB ₁ bone bodies side of the wearer's foot.

  A belt piece 13 extending along the arrangement direction of the third belt member 12 is provided on the inner side of the upper 102. The lower end of the belt piece 13 is fixed to the lower part of the upper 102. A D ring 14 is attached to the upper end of the belt piece 13. Since the third belt member 12 is folded back to the instep side through the D ring 14 of the belt piece 13, the belt piece 13 is disposed on the terminal end D.

  A hook-and-loop fastener member 12 a as a locking means for the third belt member 12 that is folded back to the upper outer side through the D ring 14 is fixed to the end portion of the third belt member 12. On the other hand, a surface fastener member that can be detachably engaged with the surface fastener 12a is fixed to a portion on the third belt member 12 corresponding to the surface fastener member 12a or an upper outer side portion.

  Here, FIG. 3 shows an example in which the third belt member 12 that has passed through the D-ring 14 is folded back on the third belt member 12 (see the solid line in FIG. 3), and the rear side of the upper instep. And an example folded back (see the alternate long and short dash line in the figure). As in the latter case, when the third belt member 12 is folded back to the upper outer side and fastened to the upper outer side portion by the surface fastener 12a, an upper opening (not shown) in the upper middle foot portion is formed. A tightening force can also be exerted on the sandwiched inner / outer side portions, whereby the twisting of the upper opening and the opening of the left and right when the foot is bent can be restricted.

  FIG. 3A corresponds to an example in which the third belt member 12 is folded back to the instep side. Further, in this case, the third belt member 12 extends from the outer side portion of the upper 102 to the instep side. The belt member 15 extending toward the side is detachably engaged via a surface fastener member. The front end of the belt member 15 is connected to the third belt member 12.

Next, the function and effect of this embodiment will be described.
When the wearer puts on the shoes 100 and tightens with the instep belt 1, the third belt 12 is passed through the D ring 14 and then folded back to the upper outer side, and the third belt 12 is formed by the surface fastener 12 a. It is fastened on the member 12 (see the solid line in FIG. 3) or fastened to the upper outer side (see the dashed line in the figure).

In this case, the start ends A and B of the first and second belt members 10 and 11 constituting the instep belt 1 are located at the position corresponding to the side surface of the fifth finger phalanx PP ₅ and the middle of the fifth finger. Since the foot bone MB ₅ is disposed at each upper part corresponding to the side of the bone body, the first and second belt members 10 and 11 apply the pressing pressure acting on the upper from the foot when landing on the side step. Thus, the deformation of the upper 102 can be effectively regulated.

In addition, since the start ends A and B of the first and second belt members 10 and 11 are arranged at positions away from the fifth finger middle toe joint joint MJ ₅ of the foot, the bending of the foot during the side step Sometimes, when the fifth finger bends at the middle foot joint joint MJ ₅ , the bending of the fifth finger can be prevented from being obstructed by the belt members 10, 11, and the foot contact with the fifth finger is improved. be able to.

Moreover, since the instep belt 1 is disposed in a Y shape on the instep portion of the upper, when the third belt member 12 is tightened, the tension of the third belt member 12 is the first, It acts on the V-shaped arrangement part of the second belt members 10 and 11. Then, the part of the fifth finger at the front and rear positions of the fifth finger middle toe joint MJ ₅ is held so as to be sandwiched between the belt members 10 and 11. Thereby, it becomes possible to reliably prevent the fifth finger of the foot from shifting in the front-rear direction within the upper of the shoe.

Further, since the terminal C of the first and second belt members 10 and 11 is disposed at the upper portion corresponding to the top of the fourth finger metatarsal MB ₄ , the foot bends during the side step. Sometimes, each belt member does not hinder each toe from bending. This point will be described in more detail with reference to FIG. 1. In FIG. 1, the terminal C of the first and second belt members 10 and 11 is along the CD direction, which is the arrangement direction of the third belt member 12. Te medial side when placed (i.e. end D side of the position on the line segment CD), the first belt member 10 has a fourth Yubichu metatarsophalangeal joints MJ ₄ on connecting the starting end a and end C It will pass and will interfere with the bending of the fourth finger. On the other hand, the terminal C of the first and second belt members 10 and 11 is placed on the outer side (that is, toward the starting end C side of the line segment CD) along the CD direction as the arrangement direction of the third belt member 12. When the first belt member 10 connecting the starting end A and the terminal end C passes over the fifth finger metatarsal joint MJ ₅ , the fifth finger is bent. Will interfere. On the other hand, when the terminal C of the first and second belt members 10 and 11 is arranged on the head of the fourth finger metatarsal MB ₄ , the first belt member 10 (the second belt member) 11) does not prevent the toes from bending.

Further, as described above, the arrangement direction of the third belt member 12 is the direction from the start end C toward the end D, and in this case, the end D is defined as the bone of the first finger metatarsal MB ₁ . At which position the third belt member 12 is disposed, the third belt member 12 is disposed in a region sandwiched between the arrow X direction and the arrow Y direction in FIG. Thereby, the arrangement direction of the third belt member 12 can be made to coincide with the direction of the maximum shearing force, whereby the floor reaction force generated during the landing operation at the side step is effectively caused by the third belt member 12. Will be able to support.

Furthermore, since the terminal end D is disposed at a position corresponding to the side surface of the first finger metatarsal MB ₁ bone, avoiding the position of the head of the first finger metatarsal MB ₁ , the first finger by the belt piece 13 is disposed. It is possible to improve the foot contact.

As shown in FIG. 1, the start end B of the second belt member 11 is preferably disposed at a position corresponding to the lower head of the fifth finger metatarsal MB ₅ .

In this case, the crossing angle of the V-shaped arrangement portions by the first and second belt members 10 and 11 becomes small, and the bone bottom portion of the fifth finger proximal phalanx PP ₅ and the fifth finger metatarsal bone. Since the bone head of MB ₅ is firmly held between the first and second belt members 10 and 11, it is possible to more reliably prevent the fifth finger of the foot from shifting in the front-rear direction in the upper of the shoe. It becomes like this.

The start end B of the second belt member 11 may be disposed at a position corresponding to the central portion of the fifth finger metatarsal MB ₅ bone body.

The position of the starting end B of the second belt member 11, it is necessary to have avoided at least a 5 Yubichu bone head position of metatarsals MB _5, long fifth Yubichu metatarsal MB ₅ length Since it is a bone, the position of the start end B of the second belt member 11 is not limited to the position on the front side of the bone body of the fifth finger metatarsal MB ₅ but may be the center position.

The terminal end D of the third belt member 12 is preferably disposed at a position corresponding to the central portion of the first finger metatarsal MB ₁ bone body.

  In this case, as described above, the arrangement direction of the third belt member 12 is the direction of the median value of the arrow X direction and the arrow Y direction in FIG. Direction) and can be matched with the average maximum shear force direction, thereby more effectively supporting the floor reaction force generated during the landing operation during the side step by the third belt member 12. become able to.

<Second embodiment>
FIG. 5 is an inner side schematic view of a volleyball shoe according to a second embodiment of the present invention. In the figure, the same reference numerals as those in the first embodiment denote the same or corresponding parts.

  In the first embodiment, an example in which the D ring 14 attached to the belt piece 13 is used as the belt threader of the third belt member 12 is shown, but in the second embodiment, the inside of the sole 101 is shown. The slit 103a formed in the wave plate 103 is used.

  As shown in FIG. 5, the sole 101 is disposed below and has a lower sole 101A having a corrugated surface, and an upper sole 101B disposed above and having a corrugated surface corresponding to the corrugated surface of the lower sole 101A. The wave plate 103 is sandwiched between the corrugated surfaces of the upper and lower part soles 101A and 101B. The wave plate 103 has a wave shape that proceeds in the front-rear direction (the left-right direction in the figure), and is, for example, a member made of hard resin. The wave plate 103 has a winding part 103 </ b> A that rises upward on the side part. A slit 103a for passing the third belt member 12 is formed in the winding part 103A.

  In this case, the slit 103a can be provided in the wave plate 103 by using the winding part 103A of the wave plate 103 for preventing side contact of the sole at the time of landing, and a separate member such as a D ring is provided. There is no need. In addition, in this case, since the slit is formed in the hard resin member, the strength as the slit can be secured. In addition, when the D ring is used as the belt threader as in the first embodiment, it is necessary to consider the position of the D ring so as not to deteriorate the feeling of foot contact with the wearer's foot. In the case of a slit, it is not necessary to take such consideration.

  In the second embodiment, an example is shown in which a slit is formed in a wave-shaped wave plate. However, the slit may be formed in a flat plate. Or you may make it form a slit in the midsole made from a soft elastic member, or the outsole made from a hard elastic member itself, without using a plate.

<Third embodiment>
6 and 7 are views for explaining a volleyball shoe according to a third embodiment of the present invention. FIG. 6 is a schematic diagram of the inner side of the volleyball shoe, and FIG. 7 is a schematic diagram of the outer side thereof. FIG. In the drawings, the same reference numerals as those in the first embodiment denote the same or corresponding parts.

  The third embodiment is different from the first embodiment in that an upper upper belt 2 is provided in addition to the upper belt 1. The upper instep belt 2 is composed of a single belt member 20.

As shown in the schematic diagram of FIG. 1, the belt member 20 is located behind the starting end B of the second belt 11 and from the position E corresponding to the side surface of the fifth finger metatarsal MB ₅ to the upper side of the upper instep. (Ie, above the cuneiform bone CU and the boat bone NA) and extending to the position F of the inner inboard side portion of the shoe mouth, and substantially extending in the foot width direction at the middle foot portion of the shoe ( It is connected to the third belt member 12 (see the dotted line in FIG. 1). The belt member 20 is disposed in the middle foot portion of the shoe in a direction symmetrical to the third belt member 12 with respect to a perpendicular perpendicular to the long axis L of the sole at the end D of the third belt member 12. It is preferable.

  The belt member 20 is disposed on the bottom surface side of the sole 101 (that is, the outsole grounding surface side) in the middle foot portion of the shoe. The belt member 20 has a D ring 14 at one end thereof, and is connected to the third belt member 12 of the instep belt 1 via the D ring 14. The other end of the belt member 20 is folded along the outer side portion of the shoe mouth through the D ring 31 provided in the inner side portion of the shoe mouth portion, and the upper outer member by the surface fastener member 20a. It is fixed to the side part so that it can be engaged and disengaged. The D ring 31 is attached to the front end of the mouthpiece belt 3 disposed in the inner side portion of the mouth portion along a direction coinciding with the direction in which the belt member 20 is disposed on the inner side portion of the mouth portion. . At the position of the end F of the belt member 20, the mouthpiece belt 3 is disposed. The belt member 20 is disposed on the upper 102 on the outer side of the shoe.

  In this case, at the time of landing at the side step, the deformation of the outer side portion of the upper 102 is regulated by the instep belt 1 as in the first embodiment, but this third embodiment. Further, when the wearer's ankle is inclined inward during the landing operation during the side step, the belt member 20 of the upper instep belt 2 is pulled upward in accordance with the opening of the mouth of the shoe. Since the third belt member 12 of the instep belt 1 is pulled toward the inner side of the shoe via the D ring 14, the first and second belt members 10 and 11 of the instep belt 1 can be further tightened. As a result, the deformation of the outer side portion of the upper 102 during the landing operation during the side step can be more firmly regulated.

  If the pressing load acting on the upper outer side part during landing at the side step is excessive or the tightening pressure of the upper instep by the instep belt 1 is weak, the side step When the outer side of the upper 102 is slightly deformed during landing, the instep belt 1 is pulled toward the outer side, and as a result, the belt member 20 is pulled downward via the D ring 14. Therefore, it becomes possible to tighten the shoe mouth.

  In this case, when the instep belt 1 is fastened and the instep portion of the upper 102 is tightened, the shoe mouth can be tightened through the belt member 20 of the instep upper belt 2. When the belt member 20 of the upper instep belt 2 is tightened to tighten the shoe mouth, the upper portion of the upper 102 can be tightened via the instep belt 1. As a result, it is possible to realize a shoe with further improved fit.

  The D ring 14 may be attached to the tip of the third belt member 12. In this case, after the belt member 20 is folded back through the D-ring 14 of the third belt member 12, the belt member 20 is detachably stopped on the third belt member 12 via a surface fastener (not shown). Worn.

  Similarly, the D ring 31 may be attached to the tip of the belt member 20. In this case, after the mouthpiece belt 3 is folded back to the upper inner side through the D ring 31 of the belt member 20, it is placed on the mouthpiece belt 3 or the upper 102 via a surface fastener (not shown). It is fixed so that it can be disengaged.

<Fourth embodiment>
FIG. 8 is a schematic side view of the inner side of a volleyball shoe according to a fourth embodiment of the present invention. In the figure, the same reference numerals as those in the third embodiment denote the same or corresponding parts.

  In the third embodiment, the belt member 20 is disposed on the bottom surface side (outsole grounding surface side) of the sole 101 in the middle foot portion of the shoe. However, in the fourth embodiment, the belt member 20 is disposed. The member 20 passes through the inside of the sole 101 at the middle foot portion of the shoe.

  As shown in FIG. 8, the sole 101 is formed with a slit 101a substantially penetrating the sole 101 in the width direction, and the belt member 20 is disposed in the slit 101a. The direction of penetration of the slit 101a is preferably the same as the arrangement direction of the belt member 20 in the third embodiment (the dotted line DE direction in FIG. 1). Further, after the belt member 20 exits from the slit 101a on the outer side of the shoe, the belt member 20 passes through the upper part of the upper 102 of the upper 102 in the same manner as in the third embodiment, and the inner side of the mouth part of the shoe. It extends to the D ring 31 at the position, is folded back through the D ring 31, and is fixed to the outer side portion of the upper 102 (see FIG. 7).

  The sole 101 includes a plate member and the like constituting the sole in addition to the midsole. Further, the belt member 20 is not limited to being passed through a slit penetrating the inside of a midsole, a plate member or the like, but an interface between members constituting the sole, for example, an interface between a midsole and an outsole, a midsole and a wave plate You may make it arrange | position along the interface between and the interface between each waveplate laminated | stacked up and down. Further, the belt member 20 may not be disposed inside the sole over the entire sole width direction in the disposed portion in the sole width direction, and a part of the belt member 20 may be exposed to the outside of the sole.

<Fifth embodiment>
FIG. 9 is a schematic side view of the inner side of a volleyball shoe according to a fifth embodiment of the present invention. In the figure, the same reference numerals as those in the fourth embodiment denote the same or corresponding parts.

  In the fourth embodiment, the belt member 20 is inserted through the inside of the sole 101 at the middle foot portion of the shoe. However, in the fifth embodiment, the belt member 20 is formed of the middle foot portion of the shoe. The upper 102 is inserted through the portion.

  As shown in FIG. 9, a slit 102 a that penetrates the upper 102 in the thickness direction is formed in the upper 102. That is, although not clearly shown in FIG. 9, the same slit 102a is formed also in the upper part of the outer side of shoes. The belt member 20 is inserted through the middle foot portion of the shoe through the slits 102 a on the inner and outer upper sides of the upper 102. As for the formation position of each slit 102a, the arrangement direction of the belt member 20 passing through each slit 102a is the same as the arrangement direction of the belt member 20 in the third embodiment (the dotted line DE direction in FIG. 1). The position is preferable.

  The belt member 20 is disposed on the upper or lower surface of an insole (not shown) inside the shoe. Since the insole is a member that is in direct contact with the wearer's sole, when the belt member 20 is disposed on the insole, the foot contact portion of the belt member 20 is improved in order to improve the feeling of foot contact. It is preferable to form a wide area so as to reduce the surface pressure against the sole. The attachment of the belt member 20 on the shoe outer side is the same as in the case of the fourth embodiment.

<Sixth embodiment>
In the third to fifth embodiments, the example in which the instep belt 1 and the instep upper belt 2 are provided as separate members is shown, but the application of the present invention is not limited to this. FIG. 10 is a schematic side view of the inner side of a volleyball shoe according to a sixth embodiment of the present invention. In the figure, the same reference numerals as those in the third embodiment denote the same or corresponding parts.

  In the sixth embodiment, the instep belt 1 and the instep upper belt 2 are integrally provided, and the instep belt 1 and the instep upper belt 2 are constituted by a single belt member.

  As shown in FIG. 10, the belt member 20 of the upper instep belt 2 is disposed on the bottom surface side (outsole grounding surface side) of the sole 101 in the middle foot portion of the shoe, and on the inner side of the shoe. It extends from the upper part of the upper 102 to the outer side through a slit 101 b formed in the upper part of the 101. On the outer side of the upper 102, the belt member 20 is bifurcated at a position corresponding to the first and second belt members 10 and 11 (see FIG. 7) of the instep belt 1.

  In this case, the instep belt 1 and the instep upper belt 2 can be constituted by a single belt, and the tightening structure can be simplified, so that the tightening operation is facilitated.

  Note that the slit through which the belt member 20 is passed on the inner side of the shoe is not limited to being formed in the sole 101. As shown in FIG. 10A, a slit 103a formed in the winding portion 103A of the wave plate 103 interposed between the upper and lower soles 101A and 101B may be used.

<Seventh embodiment>
FIG. 11 is a schematic side view of the inner side of a volleyball shoe according to a seventh embodiment of the present invention. In the figure, the same reference numerals as those in the fourth and sixth embodiments denote the same or corresponding parts.

  Also in the seventh embodiment, as in the sixth embodiment, the instep belt 1 and the instep upper belt 2 are integrally provided by a single belt member. Unlike the sixth embodiment, the arrangement of the belt member 20 of the upper instep belt 2 in the middle foot portion is the same as that of the fourth embodiment.

  That is, the belt member 20 is disposed in a slit 101a formed substantially penetrating the sole 101 in the width direction, and the first and second belts of the instep belt 1 on the outer side of the upper 102. It is bifurcated at a position corresponding to the members 10 and 11 (see FIG. 7).

<Eighth embodiment>
In the third to seventh embodiments, the belt member 20 of the upper instep belt 2 is shown on the upper side of the shoe on the upper 102 (that is, outside the upper 102). The application of the present invention is not limited to this. FIG. 12 is an outer side schematic view of a volleyball shoe according to an eighth embodiment of the present invention. In the figure, the same reference numerals as those in the third embodiment denote the same or corresponding parts.

  As shown in FIG. 12, a slit 102 b that penetrates the upper 102 in the thickness direction is formed in the outer side portion of the upper 102. The belt member 20 is inserted into the slit 102b, and is disposed up to the upper instep through the inside of the upper 102.

  In this case, the mounting position of the surface fastener (see the dotted line in FIG. 3) for fixing the third belt member 12 of the instep belt 1 to the upper outer side can be easily secured on the upper 102, The design of the shoes can be applied on the upper 102 at the place where the shoe outer side of the belt member 20 is disposed.

<Results of effect confirmation test>
Next, a confirmation test was performed to confirm the effect of the tightening structure according to the present invention. The outline and results of the test are shown below.
a) Test method Test product: Equivalent product of the shoe according to the seventh embodiment shown in FIG. 11 (acceleration sensor attached to the upper part corresponding to the fifth metatarsal head of the wearer's foot)
Subjects: Three athletes A, B, and C of the Indian type Test method: Each subject was asked to perform a total of five sets, with one set of actions that repeatedly tried the side steps to the left and right. Then, in each set, the acceleration was measured with the last step of the fifth trial being stepped on as a measurement target (the fifth trial was used to stabilize the operation). Further, among the five measured values in all sets, the remaining three measured values excluding the maximum value and the minimum value were adopted (the maximum value and the minimum value were excluded in order to eliminate variation in measurement). Furthermore, in order to see the effect of only the belt member, comparison was made between the same shoe with the belt member tightened (with belt) and the loose shoe (without belt).
b) Test results For each subject, the measured time-dependent change in acceleration was graphed. FIG. 13 shows temporal changes in acceleration measured for a subject, with the horizontal axis representing time (msec) and the vertical axis representing acceleration (G). As shown in the figure, it is assumed that the vibration is attenuated (that is, the shock is mitigated) when the acceleration reaches 5 (G) after the maximum acceleration occurs, and the vibration is attenuated from the time when the maximum acceleration is generated. The time t required for each subject was determined for each subject. As the time t is shorter, the vibration damping effect due to the tightening of the belt member is exhibited, and it is considered that the deformation of the upper is instantaneously suppressed.

  FIG. 14 is a graph showing the values of time t obtained for the subjects A, B, and C. In the drawing, a bar graph with diagonal lines shows a case where the belt member is tightened, and a white bar graph shows a case where the belt member is loosened. Each bar graph shows the average value of three trials performed by each subject.

  As can be easily seen from FIG. 14, in any of the subjects, the time t required for vibration damping is shorter in the state with the belt with the belt member tightened than with the belt without the belt member loosened. As a result, it was found that the deformation of the upper of the shoe can be effectively regulated during the side step by providing the belt member according to the present invention to the shoe and tightening it.

<Other examples>
In each of the above embodiments, as the material constituting each belt described above, synthetic fibers such as artificial leather and nylon are used. However, the material is not limited to these, and any material generally used as a belt material may be used. Any material can be used.

  Moreover, you may make it comprise a belt by interposing members, such as a wire and a shoelace, and connecting two belts. For example, in the belt member 20, an arrangement portion of the shoe middle foot portion may be configured by a wire, and both ends of the wire may be fixed to a belt-shaped artificial leather belt member. In this case, since the contact area of the belt member 20 at the middle foot portion of the shoe can be reduced, the belt member 20 can easily slide in the shoe width direction, and the tightening force by the belt member 20 can be increased.

<Other application examples>
In each of the above-described embodiments, the volleyball shoes have been described as examples of the sports shoes to which the tightening structure according to the present invention is applied. It can be applied to competitive sports shoes such as fitness shoes, futsal shoes, tennis shoes, soccer shoes, rugby shoes, and baseball shoes.

It is a schematic diagram for demonstrating the tightening structure of the sports shoes by this invention. 1 is a schematic side view of an outer side of a volleyball shoe according to a first embodiment of the present invention. FIG. 3 is a schematic plan view of a volleyball shoe (FIG. 2). It is the perspective view which looked at the whole shoe of Drawing 3 from the front side upper part. FIG. 3 is a schematic diagram of the inner side of a volleyball shoe (FIG. 2). It is the inner side side schematic of the volleyball shoes by the 2nd example of the present invention. It is the inner side side schematic of the volleyball shoes by the 3rd example of the present invention. It is an outer side side schematic diagram of volleyball shoes (FIG. 6). FIG. 6 is a schematic diagram of the inner side of a volleyball shoe according to a fourth embodiment of the present invention. FIG. 7 is a schematic side view of the inner side of a volleyball shoe according to a fifth embodiment of the present invention. It is the inner side side schematic of the volleyball shoes by the 6th example of the present invention. It is a figure which shows the modification of FIG. It is a inner side side schematic diagram of the volleyball shoes by the 7th example of the present invention. It is the outer side side schematic diagram of the volleyball shoes by the 8th example of the present invention. It is a graph showing the time change of the acceleration which acts on a subject's 5th finger metatarsal head at the time of a side step. It is the graph which put together the time required from the time of the maximum acceleration generation | occurrence | production in FIG. 13 to impact relaxation about each of the shoes with a belt and shoes without a belt for every test subject. It is the figure which looked at the state of the foot at the time of the bending of the foot in the case of a side step from the side on the inner shell side of shoes. It is the figure which looked at the shoes of FIG. 15 from the slightly front upper side of the figure, and is a figure which also shows the compressive strain distribution of the upper. The first to fifth fingers of the subject's foot is a diagram showing a state in which bonding the pressure sensor sheet S ₁ to S _8. Each pressure detected by each of the pressure sensor sheets S _{1 to} S ₈ when the subject performs the side step while wearing the shoes with the pressure sensor sheets S _{1 to} S ₈ attached to the foot is shown in one figure. It is the pressure distribution figure put together. The distribution of the tensile stress generated in the upper due to the pressing pressure acting on the shoe upper from the foot when landing on the foot during the side step is obtained by computer simulation, and this is superimposed on the foot skeleton diagram. .

Explanation of symbols

1: Instep belt 10: First belt member 11: Second belt member 12: Third belt member 12a: Surface fastener (locking means)
13: Belt piece 14: D ring

2: Upper instep belt 20: Belt member 20a: Surface fastener (locking means)

3: Belt member 31: D ring

100: Volleyball shoes 101: Sole 101a: Slit 102: Upper 102a: Slit 103: Wave plate 103A: Winding part 103a: Slit

A: Position corresponding to the side surface of the fifth finger metatarsal bone B: Position corresponding to the side surface of the fifth finger metatarsal bone C: Position corresponding to the head side of the fourth metatarsal bone D: Corresponding to the side surface of the first finger metatarsal bone Position E: 5th finger metatarsal bone side equivalent position

PP ₅ : 5th finger proximal phalanx MB ₅ : 5th finger metatarsal MB ₄ : 4th finger metatarsal MB ₁ : 1st finger metatarsal

Claims (21)

In the tightening structure of sports shoes,
The tightening structure has an instep belt disposed on the upper instep of the shoe,
The instep belt is
It has a start end fixed to the upper part of the wearer's foot corresponding to the side surface of the fifth phalanx phalanx and is disposed on the upper part of the fourth finger metatarsal head. A first belt member having an end;
It has a start end fixed to the upper part of the wearer's foot corresponding to the side of the fifth finger metatarsal bone, and is disposed on the upper part of the fourth finger metatarsal head. A second belt member having an end and the end being coincident with the end of the first belt member;
A third belt member extending from the terminal ends of the first and second belt members to the upper part at a position corresponding to the side surface of the first metatarsal bone body of the wearer's foot;
An instep belt tightening means for tightening the instep belt via the third belt member;
The instep belt is disposed in a substantially Y shape on the instep portion of the upper;
A tightening structure for sports shoes. In claim 1,
Each starting end of the first and second belt members is disposed at a position away from the fifth finger metatarsal joint.
A tightening structure for sports shoes. In claim 1,
The starting end of the second belt member is disposed at a position corresponding to the vicinity of the fifth finger metatarsal head,
A tightening structure for sports shoes. In claim 1,
The starting end of the second belt member is disposed at a position corresponding to the central portion of the fifth finger metatarsal bone,
A tightening structure for sports shoes. In claim 1,
The terminal end of the third belt member is disposed at a position corresponding to the central portion of the first finger metatarsal bone.
A tightening structure for sports shoes. In claim 1,
The instep belt tightening means,
A belt threader provided on the inner side of the upper, for passing the third belt member;
A detachable locking means for locking the third belt member folded back to the upper outer side through the belt threader to the third belt member or the upper outer side portion; It is configured,
A tightening structure for sports shoes. In claim 6,
The belt threader is composed of a D ring attached to a belt piece fixed to the upper inner side portion of the upper,
A tightening structure for sports shoes. In claim 6,
The belt threader is constituted by a slit formed in a sole component member of a shoe,
A tightening structure for sports shoes. In claim 8,
The sole component member is a resin plate disposed in the sole, and the slit is provided on a side portion of the plate.
A tightening structure for sports shoes. In claim 9,
The plate is a wave plate having a wave shape traveling in the front-rear direction.
A tightening structure for sports shoes. In claim 8,
The sole component is a midsole or an outsole;
A tightening structure for sports shoes. In claim 1,
An upper instep belt extending from the position corresponding to the side surface of the fifth metatarsal bone through the upper instep of the upper to the position of the inner side of the mouth of the shoe;
The upper instep belt extends substantially in the foot width direction at the middle foot portion of the shoe and is connected to the third belt member, and the upper instep belt for tightening the upper instep belt. Have tightening means,
A tightening structure for sports shoes. In claim 12,
The instep upper belt is disposed on the bottom side of the sole in the middle foot portion of the shoe,
A tightening structure for sports shoes. In claim 12,
The upper instep belt is disposed in the foot width direction through a slit penetrating the sole in the width direction in the middle foot portion of the shoe,
A tightening structure for sports shoes. In claim 12,
The upper instep belt extends in the foot width direction along the upper surface or the lower surface of the insole inside the upper through the slit that penetrates the upper in the width direction in the middle foot portion of the shoe,
A tightening structure for sports shoes. In claim 12,
Either the upper instep belt or the third belt member has a D ring at one end, and the other of the upper instep belt or the third belt member is folded through the D ring. Thereafter, the upper upper belt belt, the third belt member or the upper is detachably locked.
A tightening structure for sports shoes. In claim 12,
The instep upper belt is provided integrally with the third belt member;
A tightening structure for sports shoes. In any of claims 12 to 17,
The upper instep belt is disposed outside the upper on the outer side of the shoe,
A tightening structure for sports shoes. In any of claims 12 to 17,
The upper instep belt is disposed inside the upper through a slit formed in the upper on the outer side of the shoe,
A tightening structure for sports shoes. In claim 12,
The upper instep belt tightening means,
A D-ring attached to the mouth belt disposed on the inner side of the shoe mouth;
It is composed of detachable locking means for locking the upper upper belt folded back to the upper outer side through the D ring to the upper outer side part,
A tightening structure for sports shoes. In claim 12,
The upper instep belt tightening means,
A D-ring attached to the tip of the upper instep belt;
A mouth belt disposed in the mouth of the shoe;
It is composed of detachable locking means for locking the wear belt folded back through the D-ring to the wear belt or upper.
A tightening structure for sports shoes.