JP4761221B2 - Athletics mat - Google Patents

Description

  The present invention relates to a track mat used mainly for pole vaults, running vaults, and the like.

  In pole vaulting and running high jumping, the athlete's body is thrown into the air, and for safety, an athletics mat for shock absorption is laid on the landing surface to mitigate the impact when falling.

  The size of this track mat is defined as 6m or more, 3m or more and 0.7m or more in high jump, and 5m or more in depth, 6.3m or more in depth, and 0.8m or more in height ( Detailed regulations on official recognition of athletic fields).

Conventional athletics mats include those in which a urethane foam simply formed into a rectangular shape is covered with a cover, or a plurality of identical cores in which one side of the urethane foam is processed into a wave shape.
Japanese Utility Model Publication No. 50-96013

  As mentioned above, urethane foam is generally used for athletics mats with excellent shock absorption and high resilience. However, urethane foam usually has good water retention and poor drainage, so it can be used in rainy or rainy weather. If the competition is continued immediately after that, the athlete will be bathed in the water that is retained when the athlete falls on the mat, and the willingness of the competition will be impaired, resulting in a tendency to easily reduce the competition results.

  In addition, when the water is absorbed due to poor drainage, the mat becomes heavy and difficult to carry when moving, which may hinder the operation of the competition.

  Moreover, in order to completely dry the mat that has been retained, it takes 1 week or more under fine weather, which hinders the management of tools.

  In this regard, an athletics mat in which a plurality of cores of the same shape with one side of urethane foam processed into a wave shape is laminated, and has a wavy space, so it is somewhat dry compared to the case where it is simply formed into a rectangular shape. Although it was early, it was still difficult to continue the competition when it rained or immediately after it.

  An object of the present invention is to provide an athletic mat that can be continually played in rainy weather or immediately after raining, as compared with the prior art. Another object of the present invention is to provide an athletic mat that can be easily moved by early drying.

To achieve the above object, an athletics mat according to the present invention covers a shock absorbing layer composed of a plurality of layers, a surface layer provided above and below the shock absorbing layer, and a structure formed by laminating the above layers. An athletics mat comprising a cover material, wherein each layer is made of a highly breathable material having shock absorption, the cover material is made of a highly breathable net, and the shock absorbing layer is a first layer, The first layer is composed of a second layer and a third layer, and the size is gradually increased from the upper layer to the lower layer. The first layer upper member is provided with a number of V-shaped grooves continuously in the horizontal direction, and the first layer lower member is provided with a number of U-shaped grooves continuously in the horizontal direction. Product is stacked so that the V-shaped groove of the upper layer member and the U-shaped groove of the first lower layer member are orthogonal to each other. The second layer includes a second layer upper member and a second layer lower member that are formed to have a uniform thickness, and each of the second layer upper member and the second layer lower member is a rectangular second layer. The columnar members are arranged at intervals in the horizontal direction, and the second layer columnar member of the second layer upper member and the second layer columnar member of the second layer lower member are stacked so as to be orthogonal to each other. The three layers are formed by arranging the third layer columnar members at equal intervals in the horizontal direction, and the third layer columnar members are laminated so as to be orthogonal to the second layer columnar member of the second lower layer member. It is characterized by.
Further, in the athletics mat according to claim 1, the thickness of the component increases in a geometric sequence as the thickness increases from the upper layer to the lower layer.
The track mat according to claim 1 or 2 is characterized in that the surface material is provided with a number of point-like portions bulging in a salient shape on the surface.
The urethane foam having a three-dimensional skeleton structure substantially free from cell membranes, wherein the air-absorbing highly breathable material forming each of the layers is formed in the mat for athletics according to any one of claims 1 to 3. It is characterized by being.

  As described above, according to the track and field mat according to the present invention, each member is formed of a highly breathable material, and the size of the constituent members is increased from the upper layer to the lower layer. Since the contact area between the upper layer and the lower layer is as small as possible, the upper layer of the mat is drained as soon as possible, so it is possible to continue the competition even in rainy weather or immediately after raining. .

  Further, since the size of the constituent members is increased so as to increase from the upper layer to the lower layer and the rigidity is large, the support effect is increased and the entire mat is stabilized.

  Next, an athletics mat according to the present invention will be described in more detail with reference to the drawings showing embodiments. For convenience, portions having the same function are denoted by the same reference numerals and description thereof is omitted.

As shown in FIG. 1, an athletics mat 1 according to the present invention includes a shock absorbing layer 21 composed of a plurality of layers, a surface layer material 17a provided on the upper portion of the shock absorbing layer 21, and a surface layer material provided on the lower portion thereof. 17b and nets 19a and 19b. The shock absorbing layer 21 and the surface layer materials 17a and 17b are covered and fixed by the nets 19a and 19b. The highly air permeable material used for the shock absorbing layer 21 and the surface layer materials 17a and 17b is a foam having a three-dimensional skeleton structure substantially free of cell membranes. For example, the air permeability is 200 [cc / cm ^2. / Sec. ] Refers to materials that are above. As such a material, for example, “Everlight ZCG28” manufactured by Bridgestone Corporation is available, and the drainage is good. Table 1 shows the characteristics of “Everlight ZCG28”.

  The net 19 is a non-vinyl chloride material such as a resin net with reinforcing fibers, has a high air permeability with a mesh size of 1 to 1.5 mm, and is tough.

  The shock absorbing layer 21 is composed of the first layer 11, the second layer 13 and the third layer 15 in order from the upper layer, and each layer is fixed with an adhesive and laminated so as not to shift. .

  The first layer 11 is composed of upper and lower layers of an upper member 11a and a lower member 11b. The upper member 11a has an overall thickness (T1) of 60 mm, and V-shaped grooves 12a having a depth (D1) of 45 mm are continuously formed in the horizontal direction at a pitch (P1) of 40 mm (FIG. 2 ( A)). The peak portion 12b and the valley portion 12c of the V-shaped groove 12a are formed in an arc shape, and the curvature radius R thereof is 5 mm. By providing the V-shaped groove 12a in this way, the contact surface between the upper member 11a and the surface layer material 17a becomes only a mountain portion 12b of the V-shaped groove 12a and becomes a linear contact. It tends to fall down. Moreover, since the water which fell in this way concentrates on the trough part 12c of the V-shaped groove 12a with small thickness, drainage property becomes high.

  The lower member 11b has an overall thickness (T2) of 60 mm, and U-grooves 12d having a depth (D2) of 45 mm are continuously formed in the horizontal direction at a pitch (P2) of 75.6 mm (FIG. 2). (B)). The width W of the U-shaped groove 12d is 29.8 mm at the bottom W1 provided 15 mm above the base W0, and gradually expands to an intermediate part W2 12 mm above the bottom W1 to 37.8 mm, and further 21 mm above From the bottom W1, the height gradually increases from 33 mm to the top W3 to 45.8 mm. As described above, by providing the U-shaped groove 12d, it is possible to improve drainage while maintaining the rigidity higher than that of the upper member 11a.

  The V-shaped groove 12a of the upper member 11a and the U-shaped groove 12d of the lower member 11b are arranged so as to be orthogonal to each other, fixed with an adhesive, and stacked so as not to be displaced.

  The second layer 13 includes upper and lower layers of an upper member 13a and a lower member 13b. The upper member 13a is configured by adjacently arranging columnar members 13a 'each having a rectangular parallelepiped having a thickness of 150 mm and a width of 130 mm and having a length of 145.4 mm in the width direction. The lower member 13b is configured by adjacently arranging columnar members 13b 'each having a rectangular parallelepiped having a thickness of 150 mm and a width of 153.9 mm and having a length of 162.4 mm in the width direction. A water passage 13c of the upper member 13a and a water passage 13d of the lower member 13b are formed at the above intervals, respectively.

  The columnar member 13a 'of the upper member 13a and the columnar member 13b' of the lower member 13b are arranged so as to be orthogonal to each other, fixed with an adhesive, and stacked so as not to be displaced. The columnar member 13a 'of the upper member 13a is disposed so as to be orthogonal to the U-shaped groove 12d of the lower member 11b, and is fixed with an adhesive and laminated so as not to be displaced.

  In the third layer 15, columnar members 15a 'each having a rectangular parallelepiped having a thickness of 280mm and a width of 234mm and having an appropriate length are disposed adjacent to each other at an interval of 290.8mm in the width direction. The columnar member 15a 'of the third layer 15 and the columnar member 13b' of the lower member 13b are arranged so as to be orthogonal to each other, fixed with an adhesive, and laminated so as not to be displaced. Water passages 15b are formed at the above intervals.

  As will be described later, the first layer 11, the second layer 13, and the third layer 15 have a large thickness in a geometric progression and a large rigidity.

  The surface layer material 17b has an overall thickness (T3) of 50 mm, and a large number of dot-like portions 18 raised in a projecting arc shape with a height (H) of 25 mm on one side are arranged at a pitch (P3) of 50 mm. The point-like portions 18 are provided with a phase shifted by a half pitch. The surface layer material 17b is fixed to the lower surface of the third layer 15 of the shock absorbing layer 21 with an adhesive with the dotted portions 18 facing down, and is laminated so as not to be displaced. Thus, by making the dotted | punctate part 18 face down, since a space arises between the mat 1 for athletics and the ground, drainage property becomes high. In addition, since point contact with the ground is performed at a large number of points out of phase, the support of the mat is improved, contributing to the stability of the mat.

  The shock absorbing layer 21 and the surface layer material 17b integrated with the adhesive are covered with a net 19b.

  A surface layer material 17a (same shape as the surface layer material 17b) coated with a net 19a is laminated on the top of the coated surface layer material 17b and the shock absorbing layer 21 with the dotted portion 18 facing upward, and the net 19a The fixing part (not shown) and the fixing part (not shown) of the net 19b are coupled and fixed. Thus, the basic structure of the track mat 1 according to the present invention is constituted.

  Usually, the pole vault and run vault mats used in official competitions are configured by combining a plurality of units for convenience of movement and management. For example, the pole vaulting mat 50 (FIG. 3A) includes units 51 to 59, and the running vault mat 60 (FIG. 3B) includes units 61 to 64.

  The athletics mat 1 is used as the units 55 to 57 of the pole vault mat 50. For the other units 58 and 59, mats having the same layer structure as the track mat 1 are appropriately formed and used. Here, since the units 51 to 54 are about half the height of the other units, and are on the side of the runway of the bar, a simple air-permeable material is used. It should be noted that the size of the constituent members is slightly different between the pole vault mat 50 and the running vault mat 60 due to the difference in height.

  Table 2 shows the thickness of each layer of an athletics mat used for pole vault and run vault. In the case of pole vaulting, the thickness of the second layer is 150 mm for both the upper member 13a and the lower member 13b, whereas in the case of high jumping, the thickness of the second layer is 100 mm for both the upper member 13a and the lower member 13b. By this adjustment, the total thickness after stacking becomes 800 mm and 700 mm for the pole jump and for the running jump, respectively.

  In this way, an athletics mat having a total thickness of 700 mm after lamination is appropriately formed and used as each unit of the high jump mat 60.

  The thickness ratio of each constituent member of the shock absorbing layer to the thickness of the upper member 11a of the first layer is shown in [] in Table 2. The thickness increases for the lower layer for both pole vaulting and running high jumping, and the ratio is about 2 on average for the second layer and about 4.6 for the third layer, which is almost twice as large. .

  In this way, the thickness of the constituent member increases as it becomes the lower layer, and the thickness of the constituent member decreases as the upper layer portion. Therefore, the contact area with the surface layer material 17a decreases as the upper layer portion, and the drainage decreases as the lower portion is formed. Since the road gradually increases from the V-shaped groove 12a through the U-shaped groove 12d to the rectangular water passages 13c, 13d, 15b, drainage is performed quickly, and the superficial puddle phenomenon is eliminated. The competition can be continued even in the rain or immediately after rain.

  In addition, as the thickness of the lower layer increases, the thickness of the component increases and the rigidity increases. Therefore, the lower the lower the amount of deflection of the component, the greater the support effect, and the stability of the entire mat. To do. Thereby, what is called "bottoming" when a player falls can be prevented. Therefore, from this aspect, it can be expected that the willingness of the competition and the performance of the competition will be improved.

  Since the first layer 11 and the second layer 13 have a pair structure in which the constituent members are orthogonal to each other, there is no directionality of the constituent members, so that the surface strength does not vary and the rigidity is further enhanced.

  Further, since the rigidity of the upper layer is smaller and the rigidity of the lower layer is higher, the upper layer having better cushioning properties softly receives an impact immediately after dropping, and the lower layer having higher rigidity absorbs the shock reliably.

  In addition, a highly breathable material is used for the constituent members themselves, and the mat structure has a hollow structure such as V-shaped grooves 12a, U-shaped grooves 12d, and water passages 13c, 13d, and 15b. Since it is suppressed, the potential water retention amount is small and drying is performed quickly.

  Furthermore, since the surface of the surface layer material 17a on which the athlete falls is not directional, the body pressure is dispersed, and it can be expected that the athlete's fears will disappear. Can be expected.

  The present invention is not limited to the embodiment described above. For example, the highly breathable material used for the shock absorbing layer and the surface layer material is not limited to urethane foam, but may be any highly breathable material having characteristics such as hardness suitable for mats.

  Further, the number of layers constituting the shock absorbing layer is not limited to three.

  Moreover, each size of each structural member is arbitrary, and should just become large sequentially as it becomes a lower layer.

  The present invention is used for track and field equipment such as pole vaults and running vaults in track and field events.

(A) is a plan view of an athletics mat according to the present invention, (B) is a BB cross-sectional view of (A), and (C) is a CC cross-sectional view of (A). 1A is an enlarged view of IIA in FIG. 1B, FIG. 1B is an enlarged view of IIB in FIG. 1C, FIG. 1C is an enlarged view of IIC in FIG. 1C, and FIG. ) Is an enlarged view of IID. (A) is a top view which shows the example which has arrange | positioned the athletics mat | matte by this invention for pole vaults, (B) is a top view which shows the example arrange | positioned for run high jumps.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Athletic track mat 11 1st layer 11a Upper member 11b Lower member 12a V-shaped groove 12b Mountain part 12c Valley part 12d U-shaped groove 13 2nd layer 13a Upper member 13a 'Columnar member 13b Lower member 13b' Columnar member 13c Water passage 13d Water passage 15 Third layer 15a 'Columnar member 15b Water passage 17a Surface layer material 17b Surface layer material 18 Dotted portion 19a Net 19b Net 50 Rod jump mat 55 Unit 60 High jump mat 61 Unit

Claims (4)

An athletics mat comprising a shock absorbing layer composed of a plurality of layers, a surface layer provided above and below the shock absorbing layer, and a cover material covering a structure formed by laminating each of the layers,
Each of the above layers is made of a highly breathable material having shock absorption,
The cover material consists of a highly breathable net,
The shock absorbing layer is composed of a first layer, a second layer, and a third layer, and the size is gradually increased from the upper layer to the lower layer,
The first layer includes a first layer upper member and a first layer lower member that are formed to have a uniform thickness, and the first layer upper member is provided with a large number of V-shaped grooves continuously in the horizontal direction. The first layer lower member is provided with a large number of U-shaped grooves continuously in the horizontal direction, and is laminated so that the V-shaped groove of the first layer upper member and the U-shaped groove of the first layer lower member are orthogonal to each other,
The second layer includes a second layer upper member and a second layer lower member that are formed to have a uniform thickness, and each of the second layer upper member and the second layer lower member is a rectangular second layer columnar member. Are arranged such that the second layer columnar member of the second layer upper member and the second layer columnar member of the second layer lower member are orthogonal to each other,
The third layer is formed by arranging the third layer columnar members at equal intervals in the horizontal direction, and the third layer columnar members are stacked so as to be orthogonal to the second layer columnar member of the second lower layer member. An athletics mat characterized by that. 2. An athletics mat according to claim 1, wherein the thickness of the component increases in a geometric sequence as the thickness of the component increases from the upper layer to the lower layer. 3. An athletics mat according to claim 1 or 2, wherein the surface material is provided with a large number of point-like portions that bulge in a salient shape on the surface. The track mat according to any one of claims 1 to 3 , wherein the air-permeable high-breathing material forming each layer is a urethane foam having a three-dimensional skeleton structure substantially free of cell membranes. An athletics mat characterized by that.

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