WO1999015242A1 - Ball for game - Google Patents
Ball for game Download PDFInfo
- Publication number
- WO1999015242A1 WO1999015242A1 PCT/JP1998/004236 JP9804236W WO9915242A1 WO 1999015242 A1 WO1999015242 A1 WO 1999015242A1 JP 9804236 W JP9804236 W JP 9804236W WO 9915242 A1 WO9915242 A1 WO 9915242A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ball
- skeleton
- leather
- paragraph
- leather panel
- Prior art date
Links
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- 229920001971 elastomer Polymers 0.000 claims description 29
- 239000010410 layer Substances 0.000 claims description 27
- 230000003014 reinforcing effect Effects 0.000 claims description 22
- 239000004744 fabric Substances 0.000 claims description 21
- 239000005060 rubber Substances 0.000 claims description 19
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 14
- 239000000470 constituent Substances 0.000 claims description 7
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- 238000012423 maintenance Methods 0.000 claims 1
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- 238000009958 sewing Methods 0.000 description 30
- 230000000694 effects Effects 0.000 description 11
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- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B41/00—Hollow inflatable balls
- A63B41/08—Ball covers; Closures therefor
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2243/00—Specific ball sports not provided for in A63B2102/00 - A63B2102/38
- A63B2243/0025—Football
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2243/00—Specific ball sports not provided for in A63B2102/00 - A63B2102/38
- A63B2243/0033—Handball
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B45/00—Apparatus or methods for manufacturing balls
Definitions
- the present invention relates to a ball for ball games such as a soccer ball.
- the ball control is high, and there is no deformation, large size variation, seam opening, etc. High-performance ball balls. Background art
- Conventional ball balls with an air-filled structure such as a soccer ball, a knock ball, and a hand ball, have two types: a sticking ball and a sewing ball. There are types 0
- the affixing ball may be made of an air impermeable rubber, for example, as described in U.S. Pat. No. 4,333,648.
- a reinforcing layer formed by winding in a circumferential direction every 1,000 m, and a force rubber consisting of a thin vulcanized rubber layer applied on the reinforcing layer; It is composed of a skin layer consisting of a leather panel adhered on one rubber.
- the ball quality (weight, size, sphericity, durability, shape retention, strength up against deformation over time) is stabilized. ing .
- the force bar and rubber have an action of strongly bonding the leather panel to the ball.
- the above-mentioned sticking ball has such a configuration, so that the production can be mechanized, so that the productivity (there is little variation in weight and size) and the cost is low.
- the thread-wound reinforcement layer is superior in sphericity and durability due to the wound reinforcement layer, it has a drawback that it has a hard tactile sensation and it hurts when it hits the human body. Therefore, there is a problem that ball control is difficult and it is difficult to use advanced technology.
- the reason for the hardness is that the impact absorption at the time of the kicking ball depends only on the expansion and contraction of the N-way system that composes the capturing layer.
- the sewing ball may be the same as that of the above-described lamination ball, as described, for example, in US Pat. No. 4,462,590.
- the same tube and multiple leather panels are sewn to the thread (about 100000 denier thread) by folding the edges of the leather panel inward. It is composed of an epidermis layer that has a spherical shape.
- the tube is housed in the skin layer.
- leather panel artificial leather or natural leather is used.
- backing material On the back side of the artificial leather, three to four woven fabrics are attached (called backing material). Sewing is performed manually.
- the sewing ball constructed as described above has a soft and comfortable feel, so it is easy to play and has good ball control. Because the poles are three-dimensional, sewing cannot be performed with sewing. As a result, they require skill, vary greatly among individuals, have low productivity, are expensive, and have unstable quality (weight, large size variations, sphericity, etc.). Yes, the defect rate is two to three times that of the ball to be pasted, resulting in poor durability and easy deformation.
- the ball When the ball receives an internal pressure of about 1.0 kg Z cm 2 and an impact such as a kick ball, an impact force of several 100 kg or more is applied to the ball. As a result, the seam may be opened and the ball size may be larger than the standard or may be deformed. Another problem is that the thread breaks due to an impact, or the knot of the thread breaks off and the tube pops out.
- the durability of the normal sewing ball is less than 12 to 1/3 of that of the sticking ball.
- the better control of the sewing ball is due to the backing material of a regular 3- to 4-layer woven fabric lined with the back of the leather (leather). Panels include this knocking material.
- the woven fabric has a continuous wave structure in which a warp (warp) and a weft (weft) cross each other and pass over or under each other's yarn.
- this backing material has the same shape as the leather panel, and is independent for each leather panel.
- woven fabrics have a bias effect and have the ability to absorb shock more.
- the bias effect is an effect that shows a large expansion and contraction when the woven fabric is stretched in a direction 45 degrees to the warp and the weft and at a constant angle. Say . Therefore, it excels in the function of expanding and contracting upon impact.
- the nylon filaments constituting the reinforcing layer of the bonding ball are not corrugated but linear along the spherical surface and continuous. Therefore, it is inferior to the shock absorption function.
- the present invention has been made in view of such circumstances, and a ball having both the advantages of the above two types of balls, that is, productivity, durability, and stable quality.
- the purpose is to realize a ball with excellent controllability, good tactile sensation, and easy control. Disclosure of invention
- the ball ball for ball games of the present invention is a ball formed of a spherical hollow body made of an elastic material having air impermeability and filled with compressed air, and houses the tube.
- a spherical skeleton having shape retention and flexibility, and having a plurality of voids, is connected at the ends thereof to each other on the skeleton. It is composed of a plurality of leather panels that are arranged in a very smooth manner to form a skin layer, and at least the ends of the plurality of leather panels are bonded to the skeleton. It is characterized by what is not done.
- the skeletal body is composed of an elongated skeletal component corresponding to a line at which the plurality of leather panels are in contact with each other, and the skeletal components are connected to form a closed circuit. It is preferable that at least an end of the leather panel is bonded to a skeleton component of the skeleton.
- the skeleton constituting portion of the skeleton has an elongated flat plate shape.
- the skeletal component is partially cut and the skeletal component has a flap, a natural three-dimensional structure can be obtained as the entire ball. It is preferred.
- the skeleton constituting part is made of a thermoplastic elastomer.
- the skeletal component is composed of a single layer or a woven fabric in which a plurality of layers are laminated.
- the skeletal component is composed of a laminate of a plurality of woven fabrics and a rubber elastic body.
- the skeleton constituent part is abutted on the ends of the plurality of elongated woven fabrics or the laminate, and the fabric is applied to the back side and sewn together. It is better to be.
- the skeleton constituent part is formed by overlapping and sewn the ends of a plurality of elongated woven fabrics or the laminated body.
- a plurality of woven fabrics may be stuck on the back surface of the leather, and the edge of the back surface of the leather panel may not be cut off at an angle. I like it.
- a plurality of woven fabrics are stuck to the back surface of the leather on the leather panel, and the end side surface of the woven fabric is not covered with the leather panel. Is preferred.
- a reinforcing layer having a high tensile strength is interposed between the plurality of woven fabrics.
- the reinforcing layer is any one of a polystyrene film, a PVC film, a polyethylene film, and a polypropylene film. It is preferred that this is the case.
- the skeleton component of the skeleton has a groove with a concave cross section depressed toward the center of the ball, and an edge of the leather panel is provided. Is preferably folded into the groove.
- an adhesive reinforcing portion formed so as to extend in a ball circumferential direction and to which the leather panel is bonded, and It is preferred that the part is partially cut and the flap is not formed.
- the skeleton constituent part is made of a thermoplastic elastomer.
- the skeleton constituting part is composed of a woven cloth part and a thermoplastic elastomer part.
- a thick reinforcing portion is provided at an appropriate position on the side surface of the groove.
- the skeleton has a structure in which a quasi-regular 32 dihedron consisting of 12 regular pentagons and 20 regular hexagons is curved outward to form a sphere, and
- the leather panel has a size and a shape substantially corresponding to each surface of the quasi-regular 32 dihedron, and is formed by a sucker ball or a hand. It can be used as a bow.
- the skeleton has a plurality of substantially rectangular voids, and a substantially rectangular leather panel is adhered to the skeleton, so that a ball or ball is formed. It can be used as an edge ball.
- FIG. 1 is an explanatory diagram showing an example of a ball according to an embodiment of the present invention.
- Figure 2 is a sectional view taken along the line A-A in Figure 1.
- FIG. 3 is a schematic explanatory view showing another example of the ball skeleton of FIG.
- FIG. 4 is a schematic explanatory view showing still another example of the skeleton of the ball in FIG.
- FIG. 5 is an explanatory view showing an example of the structure of a leather panel used for the ball of FIG.
- Fig. 6 is a cross-sectional view taken along the line B-B of the structure of the leather panel of Fig. 5.
- FIG. 7 is an explanatory diagram showing an example of a skeleton of a ball according to another embodiment of the present invention.
- FIG. 8 is an explanatory view showing another example of the skeletal structure of a ball according to another embodiment of the present invention.
- FIG. 9 is an explanatory diagram showing an example of a ball according to still another embodiment of the present invention.
- FIG. 10 is a schematic explanatory view showing an example of a skeleton used in the ball for ball games of the present invention.
- Fig. 11 is a side view of the skeleton of Fig. 10 viewed from the direction of the arrow.
- FIG. 12 is a schematic explanatory view showing another example of the skeleton used in the ball for ball game of the present invention.
- FIG. 13 is a schematic explanatory view showing still another example of the skeleton used in the ball for ball games of the present invention.
- FIG. 14 is a schematic explanatory view showing still another example of the skeleton employed in the ball for ball games of the present invention.
- FIG. 15 is a schematic explanatory view showing still another example of the skeleton used in the ball for ball games of the present invention.
- FIG. 16 is a schematic explanatory view showing still another example of the skeleton used in the ball for ball game of the present invention.
- FIG. 17 is an explanatory cross-sectional view of the ball for a ball game of the present invention as long as no flap is formed.
- FIG. 18 is a cross-sectional explanatory view of the ball for a ball game of the present invention as long as the flap is formed.
- FIG. 19 is a cross-sectional explanatory view showing another example of a leather panel used for the ball for ball games of the present invention.
- FIG. 20 is an explanatory sectional view showing another example of a leather panel used for the ball for ball game of the present invention.
- FIG. 21 is a plan view showing an example of the structure of a leather panel used for the ball for ball games of the present invention.
- FIG. 22 is an explanatory cross-sectional view showing another example of the leather panel used for the ball for ball games of the present invention.
- FIG. 23 is an explanatory sectional view showing another example of a leather panel used for the ball for ball games of the present invention.
- FIG. 24 is an explanatory view showing an example of a sewing structure of a cloth constituting a skeleton component of a ball for ball game of the present invention.
- FIG. 25 is an explanatory view showing an example of a sewing structure of a cloth constituting a skeleton component of a ball for ball game of the present invention.
- FIG. 26 is an explanatory diagram showing an example in which an adhesive reinforcing portion is added to the structure shown in FIGS. 7 and 8.
- BEST MODE FOR CARRYING OUT THE INVENTION FIG. 1 shows an example of a ball (sucker ball) according to an embodiment of the present invention. Shows the state with the cells removed.
- Reference numeral 1 denotes a tube formed in a spherical hollow body of an air-impermeable elastic material such as butyl rubber, latex rubber, and polyurethane resin.
- Reference numeral 2 denotes a valve for injecting compressed air into the tube 1, and when used as a ball, has an internal pressure of about 1.0 kg / cm 2 . It is set.
- Reference numeral 3 denotes a skeleton in which the tube 1 is stored and a spherical shape having a plurality of voids, specifically, 12 regular pentagons and 20 regular hexagons. It is composed of a quasi-regular 32 dihedron, and the sides of this polygon are connected by an elongated skeletal structure part 4, and the other parts are voids.
- Reference numeral 5 is a center line drawn in the center of the skeleton component 4. This center line is not always necessary in the actual manufacturing process. Note that the skeletal component 4 is slightly curved outward and is spherical as a whole. The skeleton 3 functions to maintain the shape of the ball. Therefore, it has flexibility and shape maintainability. Since the skeleton 3 is pressed by the tube 1, it is desirable that the skeleton components 4 be connected to form a closed circuit.
- a crosslinked body 6 may be formed by crossing a regular pentagonal or regular hexagonal void in the skeleton constituting part 4 (see FIG. 3), or a branch-like reinforcing member 7 can be projected from the skeleton component 4 (see FIG. 4).
- thermoplastic elastomer As the material of the skeleton 3, a thermoplastic elastomer is suitable, and an appropriate grade is selected from the following elastomers and used alone. Or by blending multiple types.
- Grillax A (registered trademark, manufactured by Ink Chemical Industry Co., Ltd. in Japan).
- JSRRB Nihon Gosei Gum Co., Ltd.
- the 50% modulus is in the range of 30 to 200 kg Z cm 2 , and D It is desirable that the hardness is set within the range of 30 to 75 degrees. If the strength is less than 50 kg / cm 2 , the ball grows (expands) over time, and the D hardness becomes 30%. The same phenomena occur, albeit less. If the 50% modulus is larger than 200 kg Z cm 2 , the ball becomes hard and the tactile sensation becomes poor. D The same applies if the hardness is greater than 75 degrees.
- the skeleton 3 can be formed by injection molding. That is, after the skeleton 3 is formed in a hemisphere, it is superposed. It is fused by heat fusion, ultrasonic fusion, high frequency fusion or the like, or bonded by a polyurethane adhesive or the like, and formed into a spherical shape.
- the skeleton 3 can be formed not only by the injection molding method, but also by a vacuum molding method or a rotational molding method. In the case of the rotational molding method, it is possible to obtain a product that is integrated into a spherical shape.
- the tube 1 is housed from the void of the skeleton 3 formed in a spherical shape.
- the skeletal component 4 can be formed in a flat plate shape as shown in FIG. 2 and has a width of about 8 mm to about 30 mm and a thickness of about 1.5 mm to about 3.5 mm. And power.
- Reference numeral 8 denotes a plurality of leather panels arranged on the skeletal body 3 such that their ends are in contact with each other, and constitutes a skin layer 9.
- the leather panel 8 is composed of 12 regular pentagonal panels and 20 regular hexagonal panels corresponding to the polygons of the skeleton 3.
- the leather panel 8 is made of one or more, usually three to four, pieces of cotton, cotton and polyester on the back of the leather 8L.
- a woven fabric 10 consisting only of a blend or a polyester is stuck to the latex.
- a foam such as polyurethane on the woven fabric 10.
- the back surface of the end of the leather panel 8 is cut off at an angle (referred to as “edge cutting”, which is indicated by “a” in the figure).
- edge cutting which is indicated by “a” in the figure.
- the end of the adjacent leather panel 8 and the center line 5 are in contact with the skeletal component 4 at the center line 5, and are adhered by a polyurethane adhesive or the like.
- Two adjacent edge sharpeners In this part, the groove of the tortoiseshell pattern peculiar to the soccer ball is formed.
- FIGS. 7 and 8 show another example of the skeleton 3 in which the skeleton constituting portion 4 is formed in a groove shape with a concave cross section depressed toward the center of the ball. .
- the end of the leather panel 8 is folded inward, and the end of the adjacent leather panel 8 is pushed into this groove together with the end of the adjacent leather panel 8 to form the skeleton-forming portion 4 It is glued.
- the above edge cutting is not required.
- a thick portion 11 can be formed as a reinforcing body on a side surface thereof at a predetermined interval. This thickened portion 11 acts to prevent the groove from spreading outward in a fan shape.
- the end of the leather panel 8 forms a deep groove that is identical in appearance to the sewing ball. This has the effect of improving the aerodynamic characteristics and extending the flight distance.
- the depth of the groove is about 3.0 mm to about 15.0 mm
- the width is about 1.0 mm to about 4.0 mm
- the thickness of the thick part is large. The thickness can be set in the range of about 2.0 mm to about 4.0 mm.
- the leather panel 8 has its skeletal body 3 fixed only at its ends, and its main part is in contact with the tube 1.
- the main part is identical to the structure of the sewing ball. Further, the end of the leather panel 8 is adhered to the skeleton 3, which is basically the same as the structure of the pasting ball.
- the following table shows the experimental results showing the impact values of the various balls.
- the impact value was obtained by detecting the impact force when the ball was dropped naturally from the height of lm with the force sensor.
- Sucker pole is a polyester-based thermoplastic having a 50% modulus of 100 and a D hardness of 50 degrees as the material of the skeleton. Elastomer pellets (registered trademark) were used, and the skeletal component was a flat cross section.
- the weight was based on the maximum weight (430 g of hand-sewn ball), and the difference weight was given to other balls to eliminate the effect of the weight difference.
- the impact value of the ball according to the embodiment was smaller than that of the pasted ball by only about 16 kg, and this difference hit the human body. It was confirmed that it was a difference that could be sensed at the time, and that the tactile sensation became soft.
- Fig. 9 shows an example of a ball-ball (without the leather panel).
- the skeleton 12 has a shape having 18 rectangular voids, and the end of the leather panel is adhered thereon. In the case of the valley ball, it could be a gap of 18 rectangles or even 12 rectangles.
- the leather panel does not necessarily have to conform to the shape of the rectangular void, but two rectangular voids can cover one leather panel.
- the skeleton 12 is used as a no-sketch borehole line. It can be formed into a turn and applied to the structure of a basketball, and can also be applied to a rugby-bonore.
- FIGS. 10 to 12 show examples in which a single-layer or a plurality of laminated woven fabrics WC are used as the skeleton 3 of the ball for ball games according to the present embodiment.
- the example shown is three woven fabrics It is a superposition of WC1, WC2 and WC3.
- the rubber elastic body of WC1 can be used in place of woven cloth, and natural rubber, SBR, CR, and EPDM can be used as the rubber.
- the skeletal component 4 is cut into slightly pointed portions 4a, 4b, and 4c (for example, an angle of 0 is 120 degrees). They are joined together, and each side is abutted.
- a three-layered cloth RC consisting of RC1, RC2, and RC3 is applied to the back side, and sewn together with a sewing thread ST.
- the fabric of skeletal component 4 can be made of cotton, cotton / polyester blend, or polyester, and is attached with an adhesive such as CR latex. After that, it is cut into a slender shape.
- high-strength cloth using aramid fiber such as Honoka Kepler (registered trademark), Tekmiran (registered trademark), or carbon fiber is used.
- aramid fiber such as Honoka Kepler (registered trademark), Tekmiran (registered trademark), or carbon fiber.
- the destination cloth RC may be a laminate of the above-mentioned cloths, that is, one obtained by bonding about 1 to 4 cloths with a CR latex adhesive or the like.
- the skeleton component 4 is composed of a laminated woven fabric WC and a rubber or elastomer part E having a groove g adhered thereon.
- the one that is composed As the rubber material, natural rubber, SBR, CR, and EPDM can be used, and as the elastomer, the aforementioned materials can be used.
- the bonding between the rubber and the woven fabric WC is performed by vulcanization bonding during rubber molding.
- No. 3 has a structure in which a woven fabric WC is superimposed on the upper surface of an elastomer part E having a groove g.
- the skeleton 3 according to the present embodiment has a structure opposite to that of FIG. 14 (that is, the portion E of the elastomer is located above). are doing .
- the bonding between the elastomer and the woven fabric is performed simultaneously with the injection molding (insert molding). Or, after molding, it can be bonded using a polyurethane adhesive. There is no rubber or elastomer in the sewn area. This is to enable sewing work.
- the use of a cloth on the surface of the skeletal component improves the adhesive strength with the leather panel.
- a CR (crop-plane) adhesive is suitable. That is, the rubber or the elastomer is entangled with the keno ⁇ of the woven fabric at the time of molding and is bonded with an anchor effect.
- FIG. 16 shows yet another embodiment of the skeleton 3 in which the skeleton component 4 is partially cut (the cut is indicated by 14) and the skeleton component 4 is cut.
- FIGS. 17 and 18 show cross-sections of the ball with and without the formation of the flap 15, respectively.
- the skeletal component 4 keeps a linear cross section, and expands only in the region surrounded by the skeletal component 4. , All ball The body has a slightly distorted shape.
- the flap 15 of the skeletal component 4 bends outward, and the skeletal component 4 as shown in FIG. It will bend into a V-shaped cross section.
- the entire leather panel draws a smooth bay curve outward and becomes a natural three-dimensional body as a whole ball. Therefore, it can be said that it is more preferable to form the flaps 15 in the skeleton 3. If this flap 15 is provided, the width of the flap 1 should not be too large, since this does not affect the shape of the sphere. 5 Larger than without, for example, it can be 20 to 40 mm, so that the contact area with the leather panel 8 is large. Therefore, the bonding strength can be increased accordingly.
- the notch 14 is formed at the abutting portion of the skeletal component 4 as shown in the illustrated example, and the same applies to the contact cloth RC corresponding to the notch 14.
- a notch 14 is formed.
- FIGS. 19 and 20 show another embodiment of the leather panel 8.
- the structure is such that the leather 8L on the surface that constitutes the leather panel 8 is made up of the side and the back of the woven fabrics 10, 10, ... that are the backing material.
- Fig. 19 shows the case where only the leather 8L covered the woven fabrics 10, 10, ...
- Fig. 20 shows the case where only the leather 8L was covered.
- the figure shows that 8 L of leather is folded into woven cloth 10, 10,.
- the leather panel 8 is adhered to the skeleton component 4.
- the abutting portions (side surfaces) of the adjacent leather panels 8 and 8 may be attached to each other.
- the adhesive CR (cloth plane) adhesive or urethane adhesive can be used.
- connection of the leather panels 8, 8 The joint is the same as a ball with a sewing structure. That is, a groove 16 having a width of 2 to 3 mm similar to the ball having a sewing structure is formed at the panel joint, and this groove 16 has an effect of reducing air resistance. As a result, the effect of increasing the flight distance can be obtained. This effect is greater than that of the above-mentioned ball using the edge-cut leather panel.
- the leather panels 8 are not separated from each other at the joints of the leather panels 8, so that water is prevented from entering from the stitches, and furthermore, Durability is improved by suppressing the expansion of the ball itself.
- the end of the leather 8L has to be covered by covering the end side surface of the woven fabric 10, and the folded portion is as shown in Fig. 21. It is necessary to make a V-shaped notch 18 between the notches 17. This is because each side of the polygonal leather panel 8 is curved outward to fit along the spherical surface.
- FIG. 22 shows another embodiment of the leather panel 8 in which the leather 8L extends only on the end side surfaces of the woven fabrics 10, 10,... It is a thing.
- Fig. 23 shows a structure in which the strength of the leather panel 8 has been further improved, and the woven fabrics 10, 10, ... Instead or in addition, a reinforcing layer 19 having a large tensile strength is interposed, for example, a polyester finolem. The same effect can be obtained by bonding the reinforcing layer 19 to the skeletal body 3 in addition to the leather panel 8.
- a material of the reinforcing layer 19 in addition to the above-mentioned polyester film, a PVC film, a polyethylene film, or a polypropylene film The film can be used.
- Figure 24 shows the sewing of the fabric that makes up the skeletal component 4.
- Another example of the structure is shown, in which the ends of three elongated rectangular parts 4 are overlapped and sewn in a spiral.
- the contact cloth RC as in the above-described example is not required, and the sewing operation can be performed easily and quickly, and the sewing strength is improved. It can be done.
- the expansion rate (circular hypertrophy rate) was 0.89% in the repeated compression test (30% compression, 500 times). I got it. The expansion rate was 3.01% at the time of the seam stitching shown at the beginning.
- FIG. 25 shows yet another example of the sewing structure of the cloth constituting the skeleton component 4, and shows the end portions of the three elongated rectangular skeleton components 4 described above. Is made to have a pointed shape of 120 °, these are butted together, the cloth RC is applied to the back side, and sewn with the sewing thread ST.
- the direction of the yarn ST is the longitudinal direction of the skeletal component 4. With the relevant structure, the sewing time is reduced by about half compared to the first example.
- the leather panel 8 and the skeleton 3 and the tube 1 may have a separate structure that does not adhere to each other as in the above-described example.
- the skeleton 3 since the skeleton 3 is fixed to the tube 1 by receiving the pressing force from the tube 1, the skeleton 3 is opposed to the tube 1. They do not move.
- the leather panel 8 is provided not only on the skeleton 3 but also on the entire back surface of the panel in contact with the tube 1 with a CR adhesive or the like. It can also be a structure that is glued to the surface. If such a structure is used, the durability of the ball will be improved, and in the experiment, if the expansion rate is 2.0%, which is the case where the bonding is not performed, the bonding is The expansion rate was 1.5%.
- the adhesive is applied This is done by immersing the skeleton 3 containing the web 1 and the adhesive in the adhesive tank, and the work is to apply the adhesive only to the skeleton 3 of the former. It is simpler than that of
- FIG. 26 shows the structure shown in FIGS. 7 and 8 with the addition of adhesive reinforcing portions 20 extending in the circumferential direction of the ball at both end edges of the groove.
- a cut 21 is formed in the adhesive reinforcing portion 20 at the crossing portion, and the adhesive reinforcing portion 20 forms a flap.
- the flap-shaped adhesive reinforcing portion 20 enhances the adhesion between the skeleton 3 and the leather panel and, at the same time, provides a smooth spherical surface as a ball. It is.
- a spherical skeleton having shape retention and flexibility and having a plurality of voids is used. This eliminates the need for the conventional pincushion reinforcement layer, and provides a soft touch and high ball control, which are the characteristics of the sewing ball. In addition, there is no risk of deformation, large variance, seam opening, etc., which are disadvantages of the sewing ball, and it is excellent in durability and stable in quality. Can be manufactured with high productivity.
- the skeleton constituting portion of the skeleton is formed slender with respect to the line where the leather panels are in contact with each other.
- the amount of the skeleton relative to the entire ball can be minimized to maintain its shape. It gives a nice feel.
- the skeletal components of the skeleton are connected to each other so as to form a closed circuit, the pressure of the tube is dispersed and evenly supported, and the spherical shape is maintained. Is performed efficiently.
- a skeleton is provided.
- the skeletal component of the slab into a flat plate, it is possible to bond the leather panel in the same manufacturing process as the laminating ball.
- a leather panel that has been treated with the IJ-Guide IJ it is possible to achieve a ball that has the same appearance as a pasting ball.
- the cross-section of the flap is changed in response to a change in the internal pressure when the tube is subjected to an internal pressure or an impact. Since it is deformed into a letter shape, the degree of freedom of the leather panel is large, and therefore the degree of freedom of the pole itself is large. In other words, it can be easily and freely deformed in response to external force, improving operability and controllability.
- the molding is automatically performed by injection molding or the like. Can be done quickly.
- the adhesive is applied to the fiber portion of the woven fabric at the time of bonding to the leather panel. It can be penetrated and can improve the adhesive strength.
- a rubber elastic body is used for the skeleton.
- the rubber elastic body provides a softer elasticity than that of the thermoplastic elastomer, and at the same time, improves the adhesive strength to the leather panel.
- the surface of the skeletal body can be flattened, so that the surface of the leather panel has a flat appearance. You can take care of it.
- the ball has the same tactile feel as a hand-sewn ball, and has the appearance of a pasting ball. Can be realized.
- a groove is formed in a joint portion of a leather panel and which has the appearance of a sewing ball. This groove can reduce the air resistance and extend the flight distance.
- the tensile strength of the leather panel can be increased, and the expansion of the ball can be achieved. And thus improve durability and prolong its life.
- a ball having the appearance of a sewing ball can be realized, and the above-described flying distance can be realized. Can be extended.
- the adhesion strength of the leather panel can be increased by the addition of the adhesive reinforcing portion, and the durability of the ball can be increased.
- the adhesive reinforcement since the adhesive reinforcement has a flap structure, it has a minimal effect on the three-dimensional shape of the ball and the deformation action when an external force is applied. It is suppressed.
- the strength of the skeleton is increased by the thick capturing portion, and the bond between the leather panel and the skeleton is strengthened. I can do it.
- operability and ball control when applied to a sucker ball or an end ball are provided.
- the operability and the ball control when applied to a ball-ball or a dog-ball-hole are provided.
- the ball can be suitable for ball-ball competitions or dog-ball competitions in terms of rollability, feel, durability, etc. Industrial applicability
- the ball for ball games of the present invention has a high ball control property, it is used for an official game in which high skills such as Olympics are competed. Useful as a ball.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Laminated Bodies (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98943065A EP0941749A4 (en) | 1997-09-22 | 1998-09-21 | GAME BALL |
US09/297,932 US6302815B1 (en) | 1997-09-22 | 1998-09-21 | Ball for a ball game |
CN98801408.4A CN1241144A (zh) | 1997-09-22 | 1998-09-21 | 球赛用球 |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPPCT/JP97/03350 | 1997-09-22 | ||
JP10/113848 | 1998-04-23 | ||
JP10113848A JPH1189971A (ja) | 1997-09-22 | 1998-04-23 | 球技用ボール |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999015242A1 true WO1999015242A1 (en) | 1999-04-01 |
Family
ID=14622586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/004236 WO1999015242A1 (en) | 1997-09-22 | 1998-09-21 | Ball for game |
Country Status (4)
Country | Link |
---|---|
US (1) | US6302815B1 (ja) |
EP (1) | EP0941749A4 (ja) |
CN (1) | CN1241144A (ja) |
WO (1) | WO1999015242A1 (ja) |
Cited By (1)
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- 1998-09-21 CN CN98801408.4A patent/CN1241144A/zh active Pending
- 1998-09-21 US US09/297,932 patent/US6302815B1/en not_active Expired - Lifetime
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7854815B2 (en) * | 2002-11-26 | 2010-12-21 | Adidas International Marketing B.V. | Methods of forming three-dimensional panels for a game ball |
US8622856B2 (en) | 2002-11-26 | 2014-01-07 | Adidas International Marketing B.V. | Three-dimensional panels for a game ball and related methods |
Also Published As
Publication number | Publication date |
---|---|
US6302815B1 (en) | 2001-10-16 |
EP0941749A4 (en) | 2008-09-24 |
CN1241144A (zh) | 2000-01-12 |
EP0941749A1 (en) | 1999-09-15 |
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