JPH1189971A - Ball for ball game - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easily controllable ball which is excellent in productivity, durability, and quality stability and feels nice. SOLUTION: This ball comprises: tubes 1 made of an air-impermeable elastic material and formed into spherical hollow bodies having compressed air sealed therein; a spherical skeleton 3 enclosing the tubes 1 and having shape maintainability and flexibility, with a plurality of gaps formed therein; and a plurality of leather panels 8 arranged end-to-end on the skeleton 3 to constitute a surface layer 9, the ends of the plurality of leather panels 8 being bonded to the skeleton 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a ball for ball games such as a soccer ball. More particularly, the present invention relates to a highly durable ball ball having high ball controllability and free from deformation, variation in size, seam opening, and the like.

[0002]

2. Description of the Related Art Conventionally, there are two types of ball balls for air games, such as soccer balls, volleyballs, and handballs, having an air-enclosed structure: pasted balls and sewn balls.

[0003] (1) The pasted ball is, for example, as described in US Patent No. 4,333,648.
A spherical hollow rubber tube made of air-impermeable rubber and filled with compressed air through a valve, and a reinforcing layer formed by winding a nylon filament on this rubber tube by several thousand meters in any circumferential direction. And a cover rubber made of a vulcanized rubber thin layer adhered on the reinforcing layer, and a skin layer made of a leather panel adhered on the cover rubber.

[0004] The reinforcing layer stabilizes the quality (weight, size, sphericity, durability, shape retention, and increased strength against temporal deformation) of the ball.

[0005] The cover rubber has an action of strongly bonding the leather panel to the ball.

As the leather panel, an artificial leather or a natural leather panel is used.

[0007] The above-mentioned pasted ball has such a configuration,
Good productivity (less variation in weight and size) due to mechanization of manufacturing, good price, inexpensive, and excellent in sphericity and durability due to the thread-wound reinforcement layer, but it has a hard touch and hurts when hitting the human body It has drawbacks and is hard,
There is a problem that ball control is difficult and advanced technology is difficult to use.

[0008] The reason for the hardness is that the impact absorption at the time of kicking depends only on the expansion and contraction of the nylon-based material constituting the reinforcing layer.

(2) The sewing ball is, for example, as described in US Pat. No. 4,462,590.
It is composed of the same tube as that of the above-mentioned pasted ball, and a plurality of leather panels, the outer edges of which are folded inward and sewn with a thread (about 10,000 denier thread) to form a spherical skin layer. .

[0010] The tube is housed in a skin layer.
As the leather panel, artificial leather or natural leather is used. Three to four woven fabrics are attached to the back of the artificial leather (referred to as a backing material). The sewing is performed manually.

The sewing ball constructed as described above is soft and has a good feel, so it is easy to play and has good ball controllability. On the other hand, since the ball is three-dimensional, sewing cannot be performed, and hand sewing is not required. Not get. Therefore, skill is required, individual differences are large, productivity is low, cost is high, quality is unstable (weight, size variation, sphericity, etc.), and the defective rate is 2%. Up to 3 times, and there is a problem that durability is poor and deformation is easy.

When an internal pressure of about 1.0 kg / cm ² and an impact such as a kick ball are applied to the ball, an impact force of several hundred kg or more is applied. For this reason, a problem of seam opening may occur, and the ball size may be larger than the standard or may be deformed. Also the thread breaks due to impact,
Alternatively, there is a problem that the knot of the thread is released and the tube pops out. The durability of the normally sewn ball is ２〜 to の or less of that of the pasted ball.

The ball controllability of the sewn ball is good due to the backing material of usually 3 to 4 layers of woven fabric lined with the back of the leather (the term "leather panel" includes this backing material). The woven fabric has a continuous corrugated structure in which a warp (warp) and a weft (weft) cross each other, and the upper and lower sides of each other's yarn are wrapped. Further, the backing material has the same shape as the leather panel, and is independent for each leather panel. In addition, woven fabric has a bias effect,
There is a function to absorb shock more. The bias effect refers to an effect that shows a large expansion and contraction when the woven fabric is pulled in a direction at an equal angle of 45 degrees with respect to the warp and the weft. Therefore, it is excellent in the function of expanding and contracting upon impact.

On the other hand, the nylon filaments constituting the reinforcing layer of the bonded ball are not corrugated but linear along the spherical surface and continuous, and thus have a poor shock absorbing function.

From the above-mentioned characteristics, a high-skilled player often uses a sewing ball, and a sewing ball is generally used as a game ball. On the other hand, the pasted ball is often used as a game for elementary and junior high school students or as a practice ball.

In order to improve the feel of the pasted ball, a structure in which a tape-like rubber is adhered only to the region adjacent to the leather panel on the wound reinforcing layer and only the edge portion of the leather panel is adhered thereto has been proposed. (Actually 3-37
647). However, in this structure, the pincushion reinforcement layer is present, and the hardness due to this cannot be removed yet.

The present invention has been made in view of such circumstances, and a ball having the advantages of the above two types of balls.
That is, an object of the present invention is to realize a ball which is excellent in productivity, durability and stability of quality, has good tactile sensation, and is easy to control.

[0018]

According to the present invention, there is provided a ball for ball games, which is formed into a spherical hollow body made of an elastic material having air impermeability and in which compressed air is sealed, and which stores the tube and maintains its shape. And a plurality of leather panels forming a skin layer arranged on the skeleton so that their ends are in contact with each other on the skeleton. At least ends of the plurality of leather panels are adhered to the skeleton.

The skeletal body is composed of an elongated skeletal component corresponding to a line where the plurality of leather panels are in contact with each other, and the skeletal components are connected so as to form a closed circuit, and at least an end of the leather panel. Preferably, the part is adhered to a skeleton component of the skeleton.

It is preferable that the skeleton constituting portion of the skeleton has an elongated flat plate shape.

It is preferable that the skeleton component is partially cut and a flap is formed in the skeleton component because a natural three-dimensional structure can be obtained as a whole ball.

Further, it is preferable that the skeleton constituting part is made of a thermoplastic elastomer.

Further, it is preferable that the skeleton constituting part is made of a woven fabric having a single layer or a plurality of layers.

[0024] Further, it is preferable that the skeleton constituting part comprises a laminate of a plurality of woven fabrics and a rubber elastic body.

[0025] It is preferable that the skeleton constituting portion is formed by abutting ends of a plurality of elongated woven fabrics or the laminated body, applying a cloth to the back side, and sewing the woven fabric or the laminated body.

It is preferable that the skeleton constituting part is formed by overlapping and sewn the ends of a plurality of elongated woven fabrics or the laminated body.

Preferably, the leather panel is formed by laminating a plurality of woven fabrics on the back surface of the leather, and obliquely cutting off the end of the back surface of the leather panel.

Further, it is preferable that a plurality of woven fabrics are attached to the back of the leather panel, and the end side surface of the woven fabric is covered with the leather panel.

It is preferable that a reinforcing layer having high tensile strength is interposed between the plurality of woven fabrics.

Further, it is preferable that the reinforcing layer is made of any one of a polyester film, a PVC film, a polyethylene film and a polypropylene film.

It is preferable that the skeleton constituting portion of the skeleton has a groove having a concave cross section depressed toward the center of the ball, and an edge of the leather panel is folded into the groove.

[0032] Further, at both end edges of the groove portion, there is provided an adhesive reinforcing portion formed to extend in the circumferential direction of the ball and bonded to the leather panel, and the adhesive reinforcing portion is partially cut. And flaps are preferably formed.

Further, it is preferable that the skeleton constituting part is made of a thermoplastic elastomer.

Further, it is preferable that the skeleton constituting part comprises a woven cloth part and a thermoplastic elastomer part.

It is preferable that a thick reinforcing portion is provided at an appropriate position on the side surface of the groove.

The skeleton has 12 regular pentagons and 2 pentagons.
A quasi-regular hexahedron consisting of zero regular hexagons has a structure in which the quasi-regular hexahedron is curved outward and has a spherical shape, and the leather panel has a size and a shape substantially matching each surface of the quasi-regular hexahedron. Yes, and can be used as a soccer ball or handball.

Further, the skeleton has a plurality of substantially rectangular voids, and a substantially rectangular leather panel is adhered to the skeleton, and can be used as a volleyball or a dodgeball.

[0038]

FIG. 1 shows an example of a ball (soccer ball) according to an embodiment of the present invention.
The state where the leather panel is removed is shown in the area of. Reference numeral 1 denotes a tube formed into a spherical hollow body with an air-impermeable elastic material such as butyl rubber, latex rubber, or polyurethane resin, and reference numeral 2 denotes a valve for injecting compressed air into the tube 1. The internal pressure is set to about 1.0 kg / cm ² when used as a ball.

Reference numeral 3 denotes a skeleton in which the tube 1 is housed, and a spherical shape having a plurality of voids, specifically, a quasi-regular hexahedron composed of 12 regular pentagons and 20 regular hexagons. The sides of the polygon are connected by the elongated skeleton structure portion 4, and the other portions 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 an actual manufacturing process. The skeletal component 4 is slightly curved outward to form a sphere as a whole. This skeleton 3
Acts to maintain the shape of the ball. Therefore, it has flexibility and shape maintenance. Since the skeleton 3 is pressed by the tube 1, the skeleton component 4 is
Desirably, they are connected to form a closed circuit.

However, in order to reinforce the skeleton 3, a crosslinked body 6 may be formed across the pentagonal or hexagonal voids in the skeleton 4 (see FIG. 3), or Alternatively, the branch-shaped reinforcing member 7 can be protruded (see FIG. 4).

As the material of the skeleton 3, a thermoplastic elastomer is suitable. The thermoplastic elastomer can be obtained by selecting an appropriate grade from the following elastomers and blending them alone or in combination.

Thermoplastic polyurethane paraprene (registered trademark, manufactured by Nippon Polyurethane Industry Co., Ltd.) and Takelux (registered trademark, manufactured by Takeda Birdish Urethane Co., Ltd.).

Polyester thermoplastic elastomer Perprene (registered trademark, manufactured by Toyobo Co., Ltd.) and Hytrel (registered trademark, manufactured by Toray Dupont Co., Ltd.).

Polyamide-based thermoplastic elastomer, Grease A (registered trademark, manufactured by Dainippon Ink and Chemicals, Inc.).

Polyolefin-based thermoplastic elastomer Sumitomo TPE (manufactured by Sumitomo Chemical Co., Ltd.) and Mirastomer (registered trademark, manufactured by Mitsui Petrochemical Industry Co., Ltd.).

Tefprene (registered trademark, manufactured by Asahi Kasei Kogyo Co., Ltd.) and Clayton (registered trademark, manufactured by Shell Chemical Co., Ltd.).

Polyvinyl chloride thermoplastic elastomer Sumiflex (registered trademark, manufactured by Sumitomo Bakelite Co., Ltd.) and Sunplane (registered trademark, manufactured by Mitsubishi Monsanto Kasei Co., Ltd.).

Polybutadiene-based thermoplastic elastomer JSR RB (manufactured by Nippon Synthetic Rubber Co., Ltd.).

Since the skeleton 3 needs to have flexibility and shape maintaining properties, the 50% modulus is 30 to 20%.
It is desirable that the pressure is set at 0 kg / cm ² and the D hardness is set within a range of 30 to 75 degrees. 50% Modulus is 3
When the hardness is less than 0 kg / cm ² , a phenomenon that the ball grows (expands) with time occurs, and the same phenomenon occurs when the D hardness is less than 30 degrees. On the other hand, if the 50% modulus is greater than 200 kg / cm ² , the ball becomes hard and the feel is poor. The same applies when the D hardness is greater than 75 degrees.

The skeleton 3 can be formed by injection molding. That is, the skeletons 3 are formed hemisphere by hemisphere, and are superimposed and fused by heat fusion, ultrasonic fusion, high frequency fusion, or the like, or bonded by a polyurethane adhesive or the like, thereby forming a spherical shape. The skeleton 3 can be formed by a vacuum molding method or a rotational molding method in addition to the injection molding method. In the case of the rotational molding method, a product integrated into a spherical shape is obtained.

The tube 1 has a skeleton 3 formed in a spherical shape.
Is stored from the void.

The skeletal component 4 can be formed as a flat plate as shown in FIG. 2, and can have a width of about 8 mm to about 30 mm and a thickness of about 1.5 mm to about 3.5 mm.

Reference numeral 8 denotes a plurality of leather panels arranged on the skeleton 3 such that their ends are in contact with each other, and constitutes a skin layer 9. The leather panel 8 includes 12 regular pentagonal panels and 20 regular hexagonal panels corresponding to the polygon of the skeleton 3. As the material of the leather panel 8, artificial leather or natural leather is used.

As shown in FIGS. 5 and 6, one or more, usually three to four, leather panels 8 are provided on the back of the leather 8L.
A woven fabric 10 made of a piece of cotton, a blend of cotton and polyester, or only polyester is bonded with latex. Note that a foam such as polyurethane can be interposed between the woven fabrics 10 to obtain a softer touch.

The leather panel 8 is cut at an angle on the back surface at the end (referred to as "edge cutting", shown by "a" in the figure).
This end is adhered to the skeletal component 4 of the skeleton 3 with a polyurethane-based adhesive or the like so as to be in contact with the end of the adjacent leather panel 8 at the center line 5. A groove of a tortoiseshell pattern peculiar to a soccer ball is formed in two adjacent edge cut portions.

FIGS. 7 and 8 show another example of the skeleton 3 in which the skeleton constituting portion 4 is formed in a groove shape having a concave cross section depressed toward the center of the ball. The end of the leather panel 8 is folded inward, and the leather panel 8 is pushed into this groove together with the end of the adjacent leather panel 8 to be bonded to the skeleton component 4. In this case, the edge sharpening is not required.
In the skeletal component 4, a thick portion 11 can be formed on a side surface of the skeletal component 4 at a predetermined interval as a reinforcing member. The thick portion 11 functions to prevent the groove from spreading outward in a fan shape.

With such a configuration, the end of the leather panel 8 forms the same deep groove in appearance as the sewing ball. This has the effect of improving aerodynamic characteristics and extending the flight distance. To give an example of the dimensions of this grooved skeleton,
Groove depth of about 3.0mm to about 15.0mm, width of about 1.0m
m to about 4.0 mm, and the thickness of the thick part from about 2.0 mm to about 4.0 mm.
It can be set in the range of 0.

With the above structure, the leather panel 8 is fixed only at its ends by the skeleton 3, and its main part is in contact with the tube 1. Such main parts are 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 pasted ball.

The following table shows the experimental results showing the impact values of the various balls. The impact value is obtained by detecting the impact force when the ball falls naturally from a height of 1 m with a force sensor. Example Soccer ball is used as a material of a skeleton body.
A polyester-based thermoplastic elastomer Perprene (registered trademark) having a 50% modulus of 100 and a D hardness of 50 degrees was used, and the skeleton constituent part was formed in a flat cross section. The weight was based on the maximum weight value (430 g of hand-sewn balls), and the difference weight was given to other balls to eliminate the influence of the weight difference.

[0060]

[Table 1]

From the above results, it can be seen that the ball according to the embodiment has a smaller impact value by about 16 kg than the conventional pasted ball, and this difference is a difference that can be sensed when hitting the human body, and that the tactile sensation becomes soft. confirmed.

FIG. 9 shows an example of a volleyball (without a 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 volleyball, in addition to the 18 rectangles, there may be 12 rectangular gaps. Note that the leather panel does not necessarily have to match the shape of the rectangular gap, and two rectangular gaps can cover one leather panel. Further, the skeleton 12 can be formed in a basketball line pattern and applied to a basketball structure, and can also be applied to other rugby balls.

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 WC1, WC2, and WC3 are overlapped. In addition, WC1 can be used in place of a woven cloth for a rubber elastic body, and natural rubber, SBR, C
R and EPDM can be used. The skeletal component 4 is cut into portions 4a, 4b, and 4c (for example, the angle θ is 120 degrees) having slightly sharpened ends, and three pieces are abutted and each side is brought into contact with each other. RC1, R on the back
A three-layered addressing cloth RC composed of C2 and RC3 is applied and sewn with a sewing thread ST.

The fabric of the skeleton component 4 can be made of cotton, cotton / polyester blend, or polyester. After being bonded with an adhesive such as CR latex, it is cut into an elongated shape.

As the cloth, a high-strength cloth using an aramid fiber such as Kevlar (registered trademark) or Techmiran (registered trademark), or carbon fiber can be used. Growth (expansion) can be suppressed. In addition, since the strength of the cloth is large, the amount of the cloth used can be reduced, and the weight can be reduced.

The address cloth RC is also a laminate of the aforementioned cloth, that is,
What adhere | attached about 1-4 cloths with CR latex adhesive etc. can be used.

Referring to FIG. 13, the skeleton component 4 is composed of a laminated woven fabric WC and a rubber or elastomer portion E having a groove g adhered thereon. Natural rubber, SBR, CR, EPDM can be used as the rubber material, and the above-mentioned materials can be used as the elastomer.
The rubber and the woven fabric WC are bonded by vulcanization during rubber molding.

Referring to FIG. 14, skeleton body 3 according to the present embodiment has a structure in which woven fabric WC is overlapped on the upper surface of elastomer portion E having groove g.

Referring to FIG. 15, skeleton 3 according to the present embodiment has a structure opposite to that of FIG. 14 (that is, elastomer portion E is on the top).

In the embodiment shown in FIGS. 13 to 15, the adhesion between the elastomer and the woven fabric is performed simultaneously with the injection molding (insert molding). Alternatively, they can be bonded using a polyurethane adhesive after molding. There is no rubber or elastomer in the sewn part. This is to enable sewing work.

As shown in FIGS. 10 to 15, when a cloth is used on the surface of the skeleton component, the adhesive strength to the leather panel is improved. In this case, a CR (chloroprene) adhesive is suitable. That is, the rubber or elastomer is entangled with the fluff of the woven fabric at the time of molding and is bonded with an anchor effect.

The widening of the woven fabric portion and extending to both sides of the rubber or elastomer portion as in the embodiment shown in FIGS. 13 and 15 increases the bonding area, and this portion firmly attaches to the leather panel. This is for bonding. In this case,
It is desirable that the wide woven fabric portion has a flap shape.

FIG. 16 shows still another embodiment of the skeleton 3 in which the skeleton component 4 is partially cut (the cut is indicated by 14) and the flap 15 is formed in the skeleton component 4. It is. 17 and 18 show the cross section of the ball when the flap 15 is not formed and when the flap 15 is formed.
When a pressure is applied from above, the skeletal component 4 keeps a linear cross section, and only the region surrounded by the skeletal component 4 expands, and the entire ball has a slightly distorted shape. On the other hand, when the flap 15 is provided, the flap 15 of the skeleton component 4 is bent outward, and the skeleton component 4 is bent in a V-shaped cross section as shown in the figure. As a result, the entire leather panel draws a smooth curved line outward,
The whole ball becomes a natural solid. Therefore, it can be said that the flap 15 is more preferably formed in the skeleton 3. When the flap 15 is provided, since the flap 15 does not affect the spherical shape as described above, its width can be made larger than that without the flap 15, for example, 20 to 40 mm. For example, the bonding area with the leather panel 8 can be increased, and thus the bonding strength can be increased.

The cuts 14 are formed at the abutting portions of the skeleton components 4 as shown in the illustrated example, and the same cuts 14 are formed in the patch cloth RC corresponding to the cuts 14.

FIG. 19 and FIG. 20 show another embodiment of the leather panel 8. The structure is such that the leather 8L on the surface constituting the leather panel 8 is made of a woven fabric 10 as a backing material,
19 are formed by covering the side surfaces and a part of the rear surface of FIG. 19, and FIG.
0,... Are shown in FIG.
Are folded together with the woven fabrics 10, 10,....
In these examples, the leather panel 8 is adhered to the skeleton component 4. At the same time, the adjacent leather panels 8, 8
Butted portions (side surfaces) may be bonded to each other. As the adhesive, a CR (chloroprene) adhesive or a urethane adhesive can be used. With such a configuration, the joint between the leather panels 8, 8 is similar to a ball having a sewing structure. In other words, the panel joint has a width of 2 to 2
A groove 16 of 3 mm is formed, and this groove 16 has an effect of reducing air resistance, and as a result, an effect of increasing the flight distance can be obtained. This effect is greater than that of the ball using the above-described edged leather panel. In the above structure, the leather panels 8, 8 are not separated from each other at the joint thereof, so that water is prevented from entering from the seam, and furthermore, the expansion of the ball itself is suppressed, thereby improving the durability. .

As shown in FIG. 19, when the end of the leather 8L is folded while covering the side surface of the end of the woven fabric 10, the folded portion is V-shaped in the middle of the folded portion 17 as shown in FIG. Notches 18 need to be provided. This is because each side of the polygonal leather panel 8 is curved outward without being along the spherical surface.

FIG. 22 shows still 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,....

FIG. 23 shows a structure in which the strength of the leather panel 8 is further improved.
Instead of or in addition to one of 0,..., A reinforcing layer 19 having a large tensile strength, for example, a polyester film is interposed. The same effect can be obtained by bonding the reinforcing layer 19 to the skeleton 3 in addition to the leather panel 8. As a material of the reinforcing layer 19, a PVC film, a polyethylene film, or a polypropylene film can be used in addition to the polyester film.

FIG. 24 shows another example of the sewing structure of the cloth constituting the skeleton constituting part 4, in which the ends of three elongated rectangular parts 4 are overlapped and sewn in a spiral shape. With such a structure, the patch cloth R as in the above example can be used.
C is unnecessary, the sewing operation can be made simple and quick, and the sewing strength can be improved. That is, in the case of this lap sewing, a repeated compression test (30%
Compression, 5000 times), expansion rate (circumferential enlargement rate) 0.8
9%. Also, in the case of the seam shown first,
The expansion rate was 3.01%.

FIG. 25 shows still another example of the sewing structure of the cloth constituting the skeletal component 4.
The end of the elongated rectangular skeleton component 4 of the book is formed into a shape having a pointed shape of 120 °, these are butted against each other, a backing cloth RC is applied to the back side, and sewn with the sewing thread ST. It is the longitudinal direction of the skeleton component 4. With such a 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 as in the above-described example. In this case, the skeleton 3 is fixed to the tube 1 by receiving the pressing force from the tube 1.
However, it does not move with respect to the tube 1. Further, the leather panel 8 may have a structure in which not only the skeleton 3 but also the entire back surface of the panel in contact with the tube 1 is bonded to the tube 1 with a CR adhesive or the like. With such a structure, the durability as a ball improves, and in experiments,
The expansion rate was 1.5% when bonded, while the expansion rate was 2.0% when not bonded. In the latter case, the application of the adhesive is performed by immersing the skeleton 3 containing the tube 1 together with the skeleton 3 in an adhesive tank. This operation is compared with the former operation of applying the adhesive only to the skeleton 3. Simple.

FIG. 26 shows the structure shown in FIGS.
Adhesion reinforcing portions 2 extending in the circumferential direction of the ball at both end edges of the groove portion
0 is added, and a notch 21 is formed in the adhesive reinforcing portion 20 where the groove intersects, so that the adhesive reinforcing portion 2
0 constitutes a flap. The flap-shaped adhesive reinforcing portion 20 enhances the adhesion between the skeleton body 3 and the leather panel, and at the same time provides a smooth spherical surface as a ball.

[0083]

According to the ball according to the first aspect of the present invention, since a spherical skeleton having a shape maintaining property and flexibility and having a plurality of voids is used, a conventional pincushion reinforcing layer is used. Is unnecessary, and the soft touch and high ball control characteristic of the sewing ball can be obtained. Further, there is no possibility that deformation, size variation, seam opening, etc., which are disadvantages of the sewing ball, occur, and a ball having excellent durability and stable quality can be manufactured with high productivity.

According to the ball according to the second aspect of the present invention, since the skeleton constituting portion of the skeleton is formed to be elongated with respect to the line where the leather panels are in contact with each other, the skeleton is positioned only at the necessary portion. In addition, the amount of the skeleton with respect to the entire ball can be minimized for maintaining the shape, and a soft feel can be obtained. In addition, since the skeleton components of the skeleton are connected to form a closed circuit, the pressure of the tube is dispersed and evenly supported, and the spherical shape is efficiently maintained.

According to the ball of the third aspect of the present invention, by forming the skeleton constituting portion of the skeleton into a flat plate,
The leather panel can be bonded in the same manufacturing process as the pasted ball. In addition, by using a leather panel that has been edge-cut, a ball having the same appearance as a pasted ball can be realized.

According to the ball according to the fourth aspect of the present invention, the flap is deformed into a V-shaped cross section in accordance with a change in the internal pressure of the tube or the internal pressure when an impact is applied. Therefore, the degree of freedom of deformation of the ball itself increases. In other words, it is easily and freely deformed according to external force, so that operability and controllability are improved.

According to the ball according to claim 5 of the present invention, since the skeleton is formed of a thermoplastic elastomer,
The molding can be automatically and quickly performed by injection molding or the like.

According to the ball according to the sixth aspect of the present invention, since the skeleton is made of a woven cloth, the adhesive can penetrate into the fiber portion of the woven cloth when bonding to the leather panel. , The adhesive strength can be improved.

According to the ball of the seventh aspect of the present invention, a rubber elastic body is used for the skeleton. This rubber elastic body provides a softer elasticity than the thermoplastic elastomer, and at the same time, improves the adhesive strength to the leather panel.

According to the ball of the eighth aspect of the present invention, the surface of the skeleton can be flattened, and therefore, the surface of the leather panel can be made flat and good in appearance.

According to the ball according to the ninth aspect of the present invention, since the joint portion of the skeleton constituting portion is formed by lap sewing, the joint portion can be made strong.

According to the ball of the tenth aspect of the present invention, a ball having the appearance of a pasted ball and having the same tactile feel as a hand-sewn ball can be realized.

According to the ball according to the eleventh aspect of the present invention, a groove is formed at the joint portion of the leather panel, and a ball having the appearance of a sewing ball can be realized. This groove reduces air resistance and reduces flight distance. Can be stretched.

According to the balls of the twelfth and thirteenth aspects of the present invention, the tensile strength of the leather panel can be increased, the expansion of the ball can be suppressed, the durability can be improved, and the life can be extended. .

According to the ball of the fourteenth aspect of the present invention, a ball having the appearance of a sewing ball can be realized, and the flight distance can be increased as described above.

According to the ball according to the fifteenth aspect of the present invention, the adhesive strength of the leather panel can be increased by adding the adhesive reinforcing portion, and the durability of the ball can be increased. Further, since the adhesive reinforcing portion has a flap structure, the influence of the flap structure on the three-dimensional shape of the ball and the deformation action when an external force is applied can be minimized.

According to the ball of the eighteenth aspect of the present invention, the strength of the skeleton can be increased by the thick reinforcing portion, and the connection between the leather panel and the skeleton can be strengthened.

According to the ball of the nineteenth aspect of the present invention, when applied to a soccer ball or a handball, the ball is suitable for a soccer game or a handball game in operability, ball controllability, tactile sensation, durability and the like. Can be.

According to the ball according to the twentieth aspect of the present invention, when applied to a volleyball or a dodgeball, the ball is suitable for volleyball or dodgeball in terms of operability, ball controllability, tactile sensation, durability and the like. it can.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating an example of a ball according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a schematic explanatory view showing another example of the skeleton of the ball of FIG. 1;

FIG. 4 is a schematic explanatory view showing still another example of the skeleton of the ball of FIG. 1;

FIG. 5 is an explanatory view showing an example of a structure of a leather panel used for the ball of FIG. 1;

FIG. 6 is a sectional view taken along the line BB of the structure of the leather panel of FIG. 5;

FIG. 7 is an explanatory view 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 a skeleton of a ball according to another embodiment of the present invention.

FIG. 9 is an explanatory view 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 game of the present invention.

11 is a side view of the skeleton body 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 a 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 used 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 sectional view of the ball for ball games of the present invention when no flap is formed.

FIG. 18 is an explanatory cross-sectional view when a flap is formed in the ball for ball games of the present invention.

FIG. 19 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. 20 is an explanatory sectional view showing another example of the 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 sectional view showing another example of the leather panel used for the ball for ball game of the present invention.

FIG. 23 is an explanatory sectional view showing another example of the 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 game ball 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 game ball of the present invention.

FIG. 26 is an explanatory view showing an example in which an adhesive reinforcing portion is added to the structure shown in FIGS. 7 and 8;

[Description of Signs] 1 Tube 3 Skeletal body 4 Skeletal component 8 Leather panel 9 Skin layer

Claims (20)

[Claims] 1. A tube formed of a spherical hollow body made of an elastic material having air impermeability and filled with compressed air, a plurality of tubes each containing the tube, having shape maintaining properties and flexibility, and A spherical skeleton having voids, and a plurality of leather panels constituting a skin layer arranged on the skeleton so that their ends are in contact with each other, and at least the ends of the plurality of leather panels are A ball for ball games bonded to a skeleton. 2. The skeleton body comprises an elongated skeleton component corresponding to a line at which the plurality of leather panels contact each other,
And the skeleton components are connected to form a closed circuit,
2. The ball for ball games according to claim 1, wherein at least an end of the leather panel is adhered to a skeleton component of the skeleton. 3. The ball for ball games according to claim 2, wherein a skeleton component of the skeleton has an elongated flat plate shape. 4. The skeletal component is partially cut away to form a flap in the skeletal component.
The ball for ball game described. 5. The ball for ball games according to claim 1, wherein said skeleton constituent part is made of a thermoplastic elastomer. 6. The ball for ball games according to claim 1, wherein the skeleton constituting portion is made of a woven fabric having a single layer or a plurality of layers. 7. The ball for ball games according to claim 1, wherein the skeletal component comprises a laminate of a plurality of woven fabrics and a rubber elastic body. 8. The ball game for ball games according to claim 6, wherein the skeleton constituent part is formed by abutting ends of a plurality of elongated woven fabrics or the laminated body, applying a cloth to the back side, and sewing the woven fabric or the laminated body. ball. 9. The ball for ball games according to claim 6, wherein the skeleton constituent part is formed by overlapping and sewn ends of a plurality of the elongated woven fabrics or the laminated body. 10. The leather panel according to claim 1, wherein one or more woven fabrics are bonded to a back surface of the leather, and an end of the back surface of the leather panel is cut off obliquely.
The ball for ball games according to 4, 5, 6, 7, 8 or 9. 11. The leather panel according to claim 1, wherein one or a plurality of woven fabrics are bonded to a back surface of the leather, and end side surfaces of the woven fabric are covered with the leather.
The ball for ball games according to 3, 4, 5, 6, 7, 8 or 9. 12. A reinforcing layer having a high tensile strength is interposed between the plurality of woven fabrics.
The ball for ball games according to 1. 13. The method according to claim 13, wherein the reinforcing layer is a polyester film,
13. The ball for ball games according to claim 12, comprising a PVC film, a polyethylene film, or a polypropylene film. 14. The ball for ball games according to claim 2, wherein the skeleton constituting portion of the skeleton has a groove having a concave cross section depressed toward the center of the ball, and an edge of the leather panel is folded into the groove. . 15. An adhesive reinforcing portion formed at both ends of the groove so as to extend in the circumferential direction of the ball and to which the leather panel is bonded, and the adhesive reinforcing portion is partially cut. 15. The ball for ball games according to claim 14, wherein the ball is inserted and a flap is formed. 16. The ball for ball games according to claim 14, wherein the skeleton constituting portion is made of a thermoplastic elastomer. 17. The skeleton constituent part comprises a woven cloth part and a thermoplastic elastomer part.
The ball for ball game described. 18. The ball for ball games according to claim 16, wherein a thick reinforcing portion is provided at an appropriate position on a side surface of the groove. 19. The skeleton comprises 12 regular pentagons and 20
The quasi-regular hexahedron composed of a plurality of regular hexagons is curved outward to form a spherical shape, and the leather panel includes the quasi-regular hexahedron.
Claims 1, 2, 3, 4, 5, 6, 7, 8, and 9 having a size and shape substantially corresponding to each face of the dihedron and being used as a soccer ball or handball.
9, 10, 11, 12, 13, 14, 15, 16, 17
Or the ball for ball game according to 18. 20. The skeleton body has a plurality of substantially rectangular voids, and a substantially rectangular leather panel is adhered to the skeleton body to be used as a volleyball or a dodgeball. , 5, 6, 7, 8, 9,
The ball for ball games according to 10, 11, 12, 13, 14, 15, 16, 17 or 18.