JP4820109B2 - Upper structure of football shoes - Google Patents

Description

  The present invention relates to an upper structure that is suitable for football shoes, particularly soccer shoes, and more specifically, an upper structure that can secure a sufficient ball speed according to the type of kick and can perform appropriate ball control. About.

  For example, Japanese Utility Model Publication No. 59-86103 discloses a conventional shoe upper structure in which a plurality of polyurethane protrusions are formed on a part or the whole of the upper, and registered utility model No. 3050667. In the Japanese Patent Publication, a rubber with a groove is attached to the in-front and out-front of the upper.

  In each of the above publications, a member for suppressing the slip of the ball is added to a part or the whole of the upper from the viewpoint of improving the ball control.

However, the conventional shoes are not configured to appropriately respond to various kicks, and are not improved from the viewpoint of improving the ball speed.
Japanese Utility Model Publication No. 59-86103 (see FIGS. 1 and 2) Registered Utility Model No. 3050667 (see FIG. 1)

  The present invention has been made in view of such a conventional situation, and an object of the present invention is to provide an upper structure capable of ensuring a sufficient ball speed according to the type of kick and performing appropriate ball control.

  The inventors of the present invention first scientifically determine which region of the shoe upper is in contact with the ball during an instep kick, an inside kick and an infront kick, which are typical kicks in soccer. Development started from verification.

  Gather 10 top soccer players, attach sensors along the inner side of the surface of each foot and each footpad from 1st to 5th foot, and put the ball on while wearing socks We asked them to kick and how much pressure was applied to which position of the foot depending on the type of kick.

  3 shows the average value of the pressure distribution of each player at the time of the instep kick, FIG. 4 shows the average value of the pressure distribution of each player at the time of the inside kick, and FIG. 5 shows the pressure of each player at the time of the inside kick. The average value of each distribution is shown. In each figure, (a) is a plan view of the pressure distribution as viewed from above, and (b) is a side view of the pressure distribution as viewed from the inner shell side. Also, the darker the color of the isobaric line, the higher the pressure.

  From FIG. 3, the region where the pressure is high at the time of the instep kick is a region that covers the region from the position near the head of the first heel proximal phalanx to the center of the first heel metatarsal in a plan view. In the side view, this is a region that covers mainly the upper part of the region from the position near the head portion of the first heel proximal phalanx to the center portion of the first heel metatarsal bone. In addition, as shown in FIG. 4, the region where the pressure is high at the time of the inside kick is mainly the inner collateral side of the region extending from the bottom of the first phalanx to the first caudal metatarsal to the inner cuneiform bone head in plan view. This is a region that covers a portion and covers a region from the bottom of the first heel proximal phalanx to the first heel metatarsal to the medial wedge bone in a side view. Further, as shown in FIG. 5, the region where the pressure is high during the in-front kick covers the region extending from the position near the first radial metatarsal head to the first caudal metatarsal bone to the medial wedge bone head in plan view. In the side view, the region covers the region extending from the position near the head of the first calcaneal phalanx to the first caudal metatarsal bone to the medial wedge bone.

  On the other hand, in-step kicks are generally used when shooting, and are used when a ball is desired to be kicked fast and far away. The inside kick is a kick mainly used in a pass or PK (penalty kick), and is used when the player wants to kick the ball accurately (and hence slowly) and close. Furthermore, the in-front kick is a kick that requires accuracy and a certain ball speed, and is mainly used for a free kick or a pass.

  When these kicks are classified from the viewpoint of the ball speed required after the kick, the fastest ball speed required after the kick is an instep kick, followed by an in-front kick, and an inside kick may occur. The slowest ball speed. Also, from the viewpoint of ball control, the longest contact time with the ball and the high traction (i.e. grip) is required for the ball. An inside kick in which a kick is made by sliding along, and an inside kick in which a foot is applied straight to the ball has the shortest contact time with the ball and the lowest traction on the ball. In addition, the instep kick is required to have an intermediate traction property between these kicks.

  The present invention has been made based on such a verification result, and the upper surface of the football shoe is divided into a plurality of areas according to the type of kick so that each area can appropriately exhibit the required functions. Is intended to be.

The upper structure of the football shoe according to the invention of claim 1 of the present application has an upper member that covers the front foot portion of the shoe, and the surface layer portion of the upper member is divided into an instep kick area and an inside kick area, and the instep The kick region covers a region from the position near the first heel metatarsal bone head portion of the wearer's foot to the center portion of the first heel metatarsal bone, and in the side view, the position near the first rib phalanx head portion. Is a region covering mainly the upper part of the region from the center of the first heel metatarsal to the first kick metatarsal, and the inside kick region is medial from the bottom of the first phalanx to the first heel metatarsal in plan view. An area covering mainly the inner instep side of the area extending to the cuneiform bone head and covering the area extending from the bottom of the first calcaneal phalanx to the first anterior metatarsal bone to the inner wedge bone in a side view. ,I Step kick region and inside the kick region to form a coating layer or is inserted viscoelastic material, the thickness of the coating layer in the instep kick region t _p Or the thickness of the viscoelastic material is t _p ′, And the thickness of the coating layer in the inside kick region is t _d Or the thickness of the viscoelastic material is t _d T _p > T _d Or t _p '> T _d The relational expression 'is established.

As described with reference to FIGS. 3 to 5, the invention of claim 1 is constructed by having a first-class soccer player actually perform a kick and verifying a high pressure region acting on the foot at that time. Has been.

The invention of claim 1 shows a pattern in which the ball speed after kicking is prioritized. The reason why the thickness of the coating layer in each region is set in the above order is as follows.
When two types of resin, energy absorption type resin A and high resilience type resin B, are prepared and the thickness of the coating layer on the upper member is changed from 1 to 5 mm in 1 mm increments, the kick FIG. 6 shows the results of simulation tests on the subsequent ball speed and the ball contact time during kicking. As shown in the figure, in any type of resin coating layer, it can be seen that the ball speed after kicking increases as the thickness of the coating layer increases.

Therefore, based on the simulation test results, the coating layer in the instep kick area where the fastest ball speed is required after kicking is maximized, and the ball speed after kicking in the inside kick area is sufficient. The thickness of the coating layer was made the thinnest.

In this case, by forming a coating layer of a high resilience resin with a high energy rebound rate in the instep kick area, a ball with a fast ball speed is surely secured during an instep kick that requires the fastest ball speed. You can kick it out.

Further, as shown in the simulation test results of FIG. 6, it can be seen that in any type of resin coating layer, the ball contact time during kicking tends to increase as the thickness of the coating layer increases. Therefore, the thickness of the coating layer in the inside kick region, which requires the shortest ball contact time during kicking, is made the smallest, and the thickness of the coating layer in the instep kick region is made thicker than the thickness of the inside kick region.

The reason why the thicknesses of the viscoelastic materials in each region are set in the above order is as follows.
As a viscoelastic material, for example, EVA (ethylene vinyl acetate copolymer) is prepared, and when the EVA thickness is changed in 1 mm increments from 1 to 5 mm and inserted into the upper member, the ball speed after kicking and at the time of kicking FIG. 8 shows the result of the simulation test for the ball contact time. As shown in the figure, it can be seen that the ball contact time during kicking tends to increase as the EVA thickness increases.

Therefore, based on such simulation test results, the thickness of the viscoelastic material in the inside kick area where the ball contact time is the shortest during kicking is the thinnest, and the thickness of the viscoelastic material in the instep kick area is The thickness is greater than the thickness.

In addition, when a coating layer is formed on the surface of the upper member, the durability of the region can be improved. In addition, when a viscoelastic material is inserted into the upper member, the cushioning property of the region can be improved, and an upper structure suitable for a junior whose leg growth is particularly insufficient can be realized.

In the invention of claim 2, the thickness of the coating layer in claim 1 is 5 mm or less for the instep kick region and 2 mm or less for the inside kick region.

The reason why the upper limit of the thickness of the coating layer in each region is set in this way is as follows.
When the thickness of the coating layer in each of the instep kick area, the front kick area and the inside kick area of the upper member is changed to 0.5, 1, 2, 3, 4, 5, 6, 7 mm, A soccer player actually put on shoes and kicked, and at that time a sensory test was conducted to determine whether the players felt uncomfortable mainly from the viewpoint of the flexibility of the shoes. The result is shown in FIG.

As can be seen from FIG. 7, regarding the coating layer thickness in the instep kick area, when the coating layer thickness is 6 mm or more, all nine players feel uncomfortable. The upper limit was 5 mm. Further, regarding the coating thickness of the inside kick area, when the coating layer thickness is 3 mm or more, all nine players feel uncomfortable. For this reason, the upper limit of the coating layer thickness in the inside kick area is set to 2 mm.

In the invention of claim 3, in claim 1, the thickness of the viscoelastic material is 5 mm or less for the instep kick region and 3 mm or less for the inside kick region.

The reason why the upper limit of the thickness of the viscoelastic material in each region is set in this way is as follows.
In the case where the thickness of the viscoelastic material in each of the instep kick area, the front kick area and the inside kick area of the upper member is changed to 0.5, 1, 2, 3, 4, 5, 6, 7 mm, Nine soccer players actually wore shoes and kicked them, and at that time a sensory test was conducted to see if the players felt uncomfortable mainly from the viewpoint of the flexibility of the shoes. The result is shown in FIG.

As can be seen from FIG. 9, regarding the thickness of the viscoelastic material in the instep kick area, when the thickness of the viscoelastic material is 6 mm or more, all nine players feel uncomfortable. The upper limit of the material thickness was 5 mm. Also, regarding the viscoelastic material thickness in the inside kick area, when the viscoelastic material thickness is 4 mm or more, all nine players feel uncomfortable, so the upper limit of the viscoelastic material thickness in the inside kick area is 3 mm. did.

In the invention of claim 4, in claim 1, the coating layer is a coating layer of resin or rubber material.

In this case, the resin is not limited to one having high resilience but may be of low resilience, that is, an energy absorption type.

In the invention of claim 5, in claim 1, the coating layer or the viscoelastic material has a tapered thickness in at least a part of any region, and the region having the tapered thickness; The thickness of the coating layer or viscoelastic material in each region is equal at the boundary portion with the adjacent region.

In the invention of claim 6, in claim 1, a plurality of grooves extending in a direction crossing the front-rear direction are formed from the inner side region to the instep region on the surface of the upper member. One is located at a position corresponding to the midfoot foot joint of the foot, and the grooves arranged on the front and rear sides of the groove are gradually approaching the groove as they go to the instep side. Each groove is arranged in a fan shape as a whole.

In this case, since a plurality of grooves are formed from the inner side region to the instep region on the upper member surface, even if a coating layer is formed on the upper member surface layer portion or a viscoelastic material is inserted, the foot It is possible to prevent the bending operation of the hindering. In addition, in this case, the plurality of grooves include grooves arranged at positions corresponding to the midfoot toe joints of the foot and are arranged in a fan shape, so that the foot can be bent more smoothly. become.

According to the present invention as described above, divided into instep kick area and inside kick region surface portion of the upper member, to form a coating layer on these realm or so was to insert a viscoelastic material, Sufficient ball speed can be secured according to the type of kick, and appropriate ball control can be performed.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a side view of a soccer shoe according to an embodiment of the present invention. As shown in the figure, a soccer shoe 1 is mainly composed of a sole S provided with a plurality of studs S _c on the lower surface, an upper U secured thereon.

As shown in FIG. 2, the upper U has an instep kick area U _p , an inside kick area U _d, and an in front kick area U _t . These areas, as already described with reference to FIGS. 3 to 5, have 10 leading soccer players perform instep kicks, inside kicks, and inside front kicks, respectively. It was obtained based on the result of scientific verification of the upper region with high contact pressure.

The instep kick region U _p, a region of high pressure at the instep kick, the pressure distribution diagram of FIG. 3 (a), in plan view, the first趾基phalanx PP ₁ of the wearer's foot covers the area of to the center portion of the first趾中metatarsal M ₁ from the bone head position near the pressure distribution diagram of FIG. (b), in the side view, the first趾基phalanx PP ₁ bone head a region covering mainly the upper portion of the region from the vicinity over the first趾中central portion of the metatarsal M _1.

The inside kick region U _d is a region where the pressure is high at the time of the inside kick, and the region is from the bone bottom portion of the first rib phalanx PP ₁ in plan view from the pressure distribution diagram of FIG. together mainly cover the medial side portion of the region of the over the bone head of the first趾中metatarsal M ₁ and f the medial cuneiform bone CB, than the pressure distribution diagram of FIG. (b), in the side view, the first Although it is a region that covers the region from the bone bottom of the heel proximal phalanx PP ₁ to the first wedge metatarsal bone M ₁ and the medial wedge bone CB, in this embodiment, the inside kick region U _d is in any case the side view also, in particular it was decided to focus on the area of the rear portion from the first趾中central portion of the metatarsal M ₁ (see FIG. 2).

Infront kick region U _t is a region of high pressure during in front kick, the pressure distribution diagram of FIG. 5 (a), in plan view, the first bone head position near趾基phalanx PP ₁ It covers an area subjected bone head of medial cuneiform bone CB and f a first趾中metatarsal M _1, the pressure distribution diagram of FIG. (b), in the side view, the first趾基phalanx PP ₁ a region from the bone head position near to f the first趾中metatarsal M ₁ covers the area of the over the medial cuneiform bone CB.

Here, as can be seen from FIGS. 3 to 5, the instep kick area U _p is partially included in the infront kick area U _t in plan view and exceeds the infront kick area U _t. It extends to the vicinity of the second ridge. In addition, the instep kick area U _p is substantially included in the infront kick area U _t in a side view. In other words, the instep kick area U _p is entirely formed in the infront kick area U _t in a side view. _It overlaps the front part and the upper part of _t . The inside kick area U _d is substantially included in the front kick area U _t in plan view. In other words, the inside kick area U _d is entirely inside the inner kick area U _t in plan view. It overlaps with the side part. Moreover, inside the kick region U _d is viewed from the side, is located slightly rearward of infront kick region U _t.

Thus, since each area | region has a part which mutually overlaps, in the case of the upper structure shown in FIG. 2, in step view, the instep kick area | region _Up is the 1st heel of a wearer's leg | foot. The area from the position near the bone head of the proximal phalanx PP ₁ to the central portion of the first heel metatarsal M ₁ is defined as an area, and the infront kick area U _t is near the bone head of the _first phalangeal bone PP _1. A region covering the region from the position through the first heel metatarsal M ₁ to the bone head of the medial wedge bone CB is formed, and the inside kick region U _d is formed from the center of the first heel metatarsal bone M ₁ to the medial wedge bone. It is set as the area | region which covers the area | region over the bone head of CB.

In the plan view, the instep kick region U _p, 3 based on the pressure distribution diagram of (a), first from the first bone head position near趾基phalanx PP ₁趾中metatarsal M ₁ A region covering mainly the upper part of the region extending to the center of the front, and the in-front kick region U _t is a position near the bone head of the first rib proximal phalanx PP ₁ based on the pressure distribution diagram of FIG. To the first wedge metatarsal bone M ₁ and the region covering the inner wedge bone CB, and the inside kick region U _d is based on the pressure distribution diagram of FIG. A region covering mainly the inner instep side portion from the bone bottom portion of PP ₁ to the bone head of the medial wedge bone CB through the first heel metatarsal bone M ₁ is used.

In the present invention, for example, a resin coating layer is formed or a viscoelastic material is inserted in at least one of the instep kick region U _p , the inside kick region U _d , and the infront kick region U _t. is doing. Hereinafter, typical examples of the present invention will be described.

<First embodiment>
In the first embodiment, when the thicknesses of the coating layers formed in the instep kick area U _p , the infront kick area U _t , and the inside kick area U _d are t _p , t _t , and t _d , respectively, t _p > T _t > t _d .

The first embodiment shows a pattern giving priority to the ball speed after kicking. The reason why the thickness of the coating layer in each region is set in the above order is as follows.
As already explained with reference to FIG. 6, two types of resins, an energy absorption type urethane resin A and a high resilience type urethane resin B, are prepared, and the thickness of the coating layer on the upper U is 1 to 5 mm for each. When the simulation test was performed on the ball speed after kicking and the ball contact time at the time of kicking when the thickness of the coating layer increased in any type of resin coating, It was found that the later ball speed tended to increase.

In the first embodiment, based on the simulation test result, an energy absorption type or high resilience type resin coating layer is provided in the instep kick area U _p , the infront kick area U _t and the inside kick area U _d. Each was formed. In this case, first, the thickest thickness t _p of the coating layer of the instep kick region U _p which require the fastest ball speed after the kick, then inside kick region ball speed after kick sufficient to slowest The thickness t _d of the coating layer of U _d (excluding an overlap portion with the in-front kick area U _t ) is made the smallest, and finally, the in-front kick area U _t (however, the in-step kick area U _p The thickness t _t of the coating layer (excluding the overlap portion) is an intermediate thickness between them. It should be noted that securing a coating layer having a certain thickness in the in-front kick region also contributes to the purpose of the in-front kick region in which the ball contact time needs to be maintained to some extent.

Specifically, the thickness of each coating layer, the thickness t _p of the instep kick region U _p is 5mm or less, infront kick region U _{t (but} excluding the overlapped portion of the instep kick region U _p) the thickness _{t t} is 4mm or less, the inside kick area _{U d} (excluding the overlap part of the in-front kick region _{U t)} thickness _{t d} of is set to 2mm below.

The reason why the upper limit of the thickness of the coating layer in each region is set in this way is as follows.
As already described with reference to FIG. 7, the thicknesses of the coating layers in the instep kick area U _p , the infront kick area U _t and the inside kick area U _d of the upper U are set to 0.5, 1, 2, 3 respectively. , 4, 5, 6 and 7 mm, 9 soccer players actually wore shoes and kicked, and players felt uncomfortable mainly from the viewpoint of the flexibility of the shoes A sensory test was conducted to determine whether or not

Such functional test results, for the coating layer thickness t _p of the instep kick region U _p, the coating layer thickness t _p is equal to or greater than 6 mm, and an uncomfortable feeling is nine all players, Therefore, In the upper limit of the coating layer thickness _{t p} of step kick region _{U p} was 5 mm. Further, regarding the coating layer thickness t _t in the in-front kick area U _t , when the coating layer thickness t _t is 5 mm or more, all nine players feel uncomfortable, and for this reason, in the in-front kick area U _t The upper limit of the coating layer thickness t _t was 4 mm. Furthermore, regarding the coating layer thickness t _d in the inside kick area U _d , when the coating layer thickness t _d is 3 mm or more, all nine players feel uncomfortable. For this reason, the coating layer in the inside kick area U _d the upper limit of the thickness _{t d} was 2mm.

From the upper limit value of the thickness of each coating layer obtained from the result of the sensory test and the magnitude relationship that the thickness of each coating layer should satisfy, the thickness of each coating layer is, for example, t _p = 5, t _t = 4. , T _d = 2.

In this case, since the thickest coating layer thickness t _p of the instep kick region U _p, can be kicked fast ball reliably the ball speed upon instep kick is required fastest ball speed It becomes like this. Further, in this case, by increasing the coating layer thickness t _p of the instep kick region U _p, becomes thicker coating layer thickness of most infront kick region U _t encompasses instep kick region U _p Therefore, the contact time with the ball can be extended to some extent during an in-front kick that requires high traction, thereby improving the traction with respect to the ball and improving the ball control.

Further, in this case, since the thinnest coating layer thickness t _d of the inside kick region U _d, when the inside kick can slowest ball speed after kick compared to other regions.

  In this way, a sufficient ball speed can be ensured according to the type of kick, and appropriate ball control can be ensured to some extent.

<Second embodiment>
In the second embodiment, when the thicknesses of the coating layers formed in the instep kick area U _p , the infront kick area U _t , and the inside kick area U _d are t _p , t _t , and t _d , respectively, t _t > T _p > t _d .

The second embodiment shows a pattern giving priority to ball control during kicking. The reason why the thickness of the coating layer in each region is set in the above order is as follows.
As already described using the simulation test results of FIG. 6, in any type of resin coating layer, the ball contact time during kicking increases as the thickness of the coating layer increases.

In the second embodiment, based on the simulation test result, an energy absorption type or high resilience type resin coating layer is provided in the instep kick area U _p , the infront kick area U _t and the inside kick area U _d. Each was formed. In this case, first, the coating layer thickness t _t of the in-front kick region U _t that requires the longest ball contact time during kicking is maximized, and then the inside of the ball contact time during kicking is shortest and sufficient. The thickness of the coating layer t _{d in} the kick area U _d (excluding the overlap portion with the in-front kick area U _t ) is made the smallest, and finally, the in-step kick area U _p (in the in-front kick area U t ₍ except for the overlap portion with _t ) is defined as an intermediate thickness. Incidentally, to ensure the coating layer of the instep kick region U _p to a certain degree of thickness, also will contribute to the objective of the instep kick areas that need to increase the ball speed.

Specifically, the thickness of each coating layer, 3 mm or less instep kick region _{U p,} infront kick region _{U t} is 4mm or less, inside the kick region _{U d} is set to 2mm or less.

The reason why the upper limit of the thickness of the coating layer in each region is set in this way is as follows.
As already explained with reference to FIG. 7, the results of sensory test, the upper limit of coating layer thickness t _p of the instep kick region U _p is 5 mm, the coating layer thickness t _t of infront kick region U _t The upper limit is 4 mm, and the upper limit of the coating layer thickness t _d of the coating layer thickness t _d of the inside kick region U _d is 2 mm. However, in this embodiment, the ball control is prioritized over the ball speed. The coating layer thickness t _t of the in-front kick region U _t requiring high ball control is made thicker than the coating layer thickness t _p of the in-step kick region U _p .

From the sensory test results and the upper limit value of the thickness of each coating layer determined from the viewpoint of ball controllability and the magnitude relationship that the thickness of each coating layer described above should satisfy, the thickness of each coating layer is, for example, t _p = 3, t _t = 4, t _d = 2.

In this case, since the coating layer thickness t _t of the in-front kick region U _t is maximized, the contact time with the ball can be extended during the in-front kick that requires high traction, , The traction property with respect to the ball can be improved, and the ball control can be improved.

Further, in this case, since the thinnest coating layer thickness t _d of the inside kick region U _d, when the inside kick may shortest ball contact time when the kick compared to other regions . Further, it is possible to ensure a certain degree of ball speed during thick instep kick also the coating layer thickness t _p of the instep kick region U _p.
In this way, appropriate ball control can be performed.

<Third embodiment>
In the third embodiment, unlike the first and second embodiments, a viscoelastic material (for example, EVA) is inserted into each region. When the thicknesses of the viscoelastic materials inserted into the instep kick area U _p , the infront kick area U _t and the inside kick area U _d are t _p ′, t _t ′, and t _d ′, respectively, t _t ′> t and it has a _p '> _{t d'.}

The third embodiment shows a pattern giving priority to ball control at the time of kicking. The reason why the thickness of the coating layer in each region is set in the above order is as follows.
As already described with reference to FIG. 8, EVA (ethylene vinyl acetate copolymer) is prepared as a viscoelastic material, and when the thickness of EVA is changed from 1 to 5 mm in 1 mm increments and inserted into the upper U, When a simulation test is performed on the ball speed after kicking and the ball contact time at kicking, the ball speed after kicking tends to decrease as the EVA thickness increases, but the ball contact time at kicking tends to increase. I understood.

In the third embodiment, EVA is inserted into the instep kick area U _p , the infront kick area U _t and the inside kick area U _d based on the simulation test results. In this case, first, the EVA thickness in the in-front kick area U _t requiring the longest ball contact time during kicking is maximized, and then the inside kick area U _{d in} which the ball contact time is shortest during kicking is sufficient. The EVA is made the thinnest (except for the overlap portion with the in-front kick region U _t ), and finally the in-step kick region U _p (however, the overlap portion with the in-front kick region U _t is The thickness of EVA in (except) is set to an intermediate thickness between them.

Specifically, the thickness of the EVA, 5 mm or less instep kick region _{U p,} infront kick region _{U t} is 6mm or less, inside the kick region _{U d} is set to 3mm or less.

The reason why the upper limit of the EVA thickness in each region is set in this way is as follows.
As already described with reference to FIG. 9, the thicknesses of the EVA in the instep kick area U _p , the in front kick area U _t and the inside kick area U _d of the upper U are 0.5, 1, 2, 3, and 3, respectively. In the case of changing to 4, 5, 6, and 7 mm, 9 soccer players actually put on shoes and kicked, and at that time the players felt uncomfortable mainly from the viewpoint of the flexibility of the shoes A sensory test was conducted.

Results of such functional tests, for EVA thickness t _{p 'of} the instep kick region U _p, the EVA thickness t _p is equal to or greater than 6 mm, and an uncomfortable feeling is nine all players, Therefore, in step the EVA upper limit of the thickness _{t p} 'kick region _{U p} was 5 mm. In addition, 'For, EVA thickness _{t t'} EVA thickness _{t t} of the in-front-kick area _{U t} and is equal to or greater than 7mm, and 9 people all of the players feel a sense of discomfort, and for this reason, in-front-kick area _{U t} The upper limit of the EVA thickness t _t ′ was 6 mm. Further, regarding the EVA thickness t _d ′ of the inside kick area U _d , when the EVA thickness t _d ′ becomes 4 mm or more, all nine players feel uncomfortable, and therefore the EVA thickness of the inside kick area U _d The upper limit of t _d ′ was 3 mm.

And the upper limit value of the EVA thickness determined from the result of the sensory test, and a magnitude relation be satisfied by the EVA thickness described above, each EVA thickness, for example, _{t p '= 4, t t} ' = 5, t d '= 3 is set.

In this case, since the EVA thickness t _t ′ of the in-front kick area U _t is maximized, it is possible to increase the contact time with the ball during the in-front kick that requires high traction. , It can improve the traction on the ball and improve the ball control.

Further, in this case, since the EVA thickness t _d ′ of the inside kick area U _d is made the thinnest, the ball contact time at the time of kicking can be shortened compared with other areas during the inside kick. . Further, since the EVA thickness t _{p 'of} the instep kick region U _p an intermediate thickness, it is possible to ensure a certain degree of ball contact time during instep kick.
In this way, appropriate ball control can be performed.

<Fourth embodiment>
In the fourth embodiment, as shown in FIGS. 1 and 10, a plurality of grooves M extending substantially in the width direction are formed from the inner side region to the instep region on the surface of the upper U. These grooves M are for preventing the bending of the shoe from being hindered by forming a coating layer on the surface layer portion of the upper U or inserting a viscoelastic material.

Among these grooves, the groove M ₀ disposed in the middle is disposed at a position corresponding to the middle foot joint joint of the foot, and the grooves M ₁ and M disposed on the front side and the rear side of the groove M _{0. 2} is arranged in a direction of gradually approaching the groove M ₀ as it goes to the instep side, each groove is arranged in a fan shape as a whole. The position of each groove can be obtained by taking a picture of the bending of the upper forefoot with a high-speed camera when the player actually puts on shoes and makes a dash in the front-rear direction.

  In the first and second embodiments, the urethane resin has been described as an example of the coating layer. However, the present invention can also be applied to coating layers made of other resins or rubber materials.

  In the third embodiment, EVA has been described as an example of the viscoelastic material. However, the present invention is applicable to other materials having viscoelasticity.

  In each of the above-described embodiments, an example in which the coating layer or the EVA layer is used alone has been described. However, the present invention, for example, forms the coating layer in the instep kick region and forms the EVA layer in the infront kick region. Thus, the present invention can also be applied to a case where a coating layer and an EVA layer are used in combination.

  In each of the above embodiments, the case where the thickness of the coating layer or the EVA layer in each region is described as an example, but the application of the present invention is not limited to this. In at least a part of any region, the coating layer or the EVA layer may have a taper thickness. In this case, the region having the taper thickness and a region adjacent thereto are provided. In the boundary portion, the thickness of the coating layer or EVA layer in each region becomes equal.

  In each of the above embodiments, when a coating layer is formed in any region of the upper surface layer portion, durability of the region can be improved, and when a viscoelastic material is inserted into the upper surface layer portion, Thus, the cushioning property of the region can be improved, and an upper structure suitable for a junior whose leg growth is particularly insufficient can be realized.

  In each of the above embodiments, soccer shoes have been described as examples. However, the present invention can also be applied to rugby shoes and American football shoes.

1 is a side view of a soccer shoe to which an upper structure according to the present invention is applied. It is a figure for demonstrating each area | region which partitions an upper surface layer part in the said soccer shoes (FIG. 1). It is a pressure distribution figure at the time of an instep kick, Comprising: (a) is a top view which looked at pressure distribution from the upper part, (b) is a side view which looked at pressure distribution from the inner shell side. It is the pressure distribution figure at the time of an inside kick, Comprising: (a) is the top view which looked at pressure distribution from upper direction, (b) is the side view which looked at pressure distribution from the inner shell side. It is a pressure distribution figure at the time of an in-front kick, Comprising: (a) is a top view which looked at pressure distribution from the upper part, (b) is a side view which looked at pressure distribution from the inner shell side. It is a graph which shows the relationship between the thickness of a resin coating layer, and a ball speed or ball contact time. It is a figure which shows the sensory test result at the time of changing the coating layer thickness of each area | region. It is a graph which shows the relationship between the thickness of EVA and a ball speed or ball contact time. It is a figure which shows the sensory test result at the time of changing the thickness of the viscoelastic material of each area | region. The soccer shoe in which the some groove | channel which comprises the upper structure by this invention was formed is shown, (a) is a top view of a soccer shoe, (b) is a side view.

1: Soccer shoes

U: Upper U _p : Instep kick area U _d : Inside kick area U _t : Inside kick area

t _p , t _d , t _t : thickness

M: Groove

Claims (6)

In the upper structure of football shoes,
It has an upper member that covers the forefoot part of the shoe,
While dividing the surface layer portion of the upper member into an instep kick area and an inside kick area ,
The instep kick region covers a region from the position near the first calcaneal phalanx head portion of the wearer's foot to the center of the first calcaneal metatarsal in a plan view, and the first calcaneal phalanx in the side view. An area covering mainly the upper part of the area from the position near the bone head to the center of the first heel metatarsal,
The inside kick region mainly covers the inner collateral portion of the region extending from the first rib proximal phalanx to the first caudal metatarsal bone to the medial cuneiform bone head in plan view, and in side view. A region covering the region extending from the base of the first rib proximal phalanx to the first caudal metatarsal bone to the medial wedge bone;
Forming a coating layer in the instep kick area and the inside kick area or inserting a viscoelastic material ;
The thickness of the coating layer in the instep kick region is t _p or the thickness of the viscoelastic material is t _p ′, and the thickness of the coating layer in the inside kick region is t _d or the thickness of the viscoelastic material is t _d. 'When
t _p > t _d or t _p '> t _d '
The relational expression of
The upper structure of football shoes characterized by this. In claim 1,
The thickness of the coating layer is such that the instep kick area is 5 mm or less, and the inside kick area is 2 mm or less,
The upper structure of the football shoes characterized by this. In claim 1,
The viscoelastic material has a thickness of 5 mm or less for the instep kick region and 3 mm or less for the inside kick region.
The upper structure of the football shoes characterized by this. In claim 1,
The coating layer is a resin or rubber coating layer;
The upper structure of the football shoes characterized by this. In claim 1,
In at least a part of any of the regions, the coating layer or the viscoelastic material has a tapered thickness, and at a boundary portion between the region having the tapered thickness and the adjacent region. , The thickness of the coating layer or the viscoelastic material in each region is equal,
The upper structure of the football shoes characterized by this. In claim 1,
A plurality of grooves extending in the direction crossing the front-rear direction are formed from the inner instep region to the instep region on the surface of the upper member, and one of these grooves is formed in the metatarsal joint of the foot. The grooves arranged on the front side and the rear side of the groove are arranged in a direction gradually approaching the groove as they go to the instep side, and each groove as a whole Arranged in a fan shape,
The upper structure of the football shoes characterized by this.

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