JP2505203Y2 - Elliptical sphere for ball games - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION This invention relates to an elliptic sphere used for rugby football and American football.

[0002]

2. Description of the Related Art In this type of elliptical sphere, as shown in FIG. 7, four spindle-shaped skin pieces 1 are sewn together at their side edges and turned upside down. It is an elliptic spherical shape that has become an opening Q without being sewn, and a tube is inserted into the opening Q, the air inlet 2 of this tube is located at the opening Q, and the edge of the opening Q is Is a structure in which the leather cords 3 extending over both edges are pulled together at a required interval along the edges.

In this elliptic sphere A, the edge stitching portion (suture thread a) of the skin piece 1 excluding the opening Q is shown in FIG. As shown in (3), the suture thread a is located inside the surface of the skin piece 1 (the surface of the elliptical sphere A), and there is no risk of abrasion.

On the other hand, since it is difficult to obtain all the sewn edges by the inside out, a part of the sewn edges is not sewn to form the opening Q, and the opening Q is provided at the tube loading point and the air injection port 2 mounting point. As shown in FIG. 7 and FIG. 8, the leather strap 3 is used to pull them together.

By the way, rugby football is rainy,
The competition is performed even in a snowy environment, so that the ball used is exposed to moisture in addition to the kick pressure, and is placed in a harsh environment. On the other hand, this sphere A is an elliptical sphere, and the direction in which it rolls changes depending on the shape of the ellipse, which may affect victory or defeat. Therefore, it is necessary to maintain its shape as invariant as possible, that is, maintain an elliptical shape without distorted bulges. is there.

However, in the elliptical sphere A having the above-mentioned structure, due to the moistening and pressing, the leather cord 3 is stretched and the edge of the leather piece 1 of the opening Q which is not sewn is swollen or separated, that is, the opening Q is opened and the whole of the oval sphere A is opened. In many cases, the ellipse collapsed. When the opening Q is opened, the pressing force at the time of kicking is concentrated on the suture ends a ₁ at both ends of the opening Q, and thread breakage occurs. This yarn breakage further promotes the deformation.

[0007] The skin piece 1 is formed by adhering a woven cloth or the like to the back surface of the surface skin to prevent expansion and contraction, but the effect is not sufficiently obtained, and the skin piece 1 partially swells. It was deformed and the ellipse was broken.

An object of this invention is to suppress the above deformation as much as possible.

[0009]

In order to solve the above-mentioned problems, in the first invention, in the above-mentioned elliptic sphere, the edges of the skin pieces of the opening are sewn from the outside, and the suture thread is The structure that is located inside the surface of the leather cord is adopted.

In addition, in the second invention, the above first
In the ellipsoidal sphere of the present invention, the skin piece is formed by adhering a plurality of sheets to the back surface of the epidermis with different expansion and contraction directions.

[0011]

For the surface skin of the above-mentioned leather piece, a well-known material such as leather, synthetic leather, rubber, or one surface of a non-woven fabric coated with a urethane layer can be used. As the sheet to be adhered to the back surface of the epidermis, well-known sheets such as woven cloth, non-woven cloth, and plastic sheet can be adopted, and the important point is that the expansion and contraction directions are different. The adhesive layer is at least two sheets. The material of the skin, the sheet, the thickness, and the number of layers are appropriately selected so that the sphere has a required weight.

By the way, when a club name or the like is attached to the surface of the skin, the name may be printed or the like. However, the name of the name may be represented by the background color of the skin without coloring the name. Can be This may be adopted when the surface of the epidermis is coated with various resins or the like.

[0014]

The function of the ellipsoidal sphere according to the present invention constructed as described above is as follows:
Since the tube loading opening, which has not been conventionally sewn, is also sewn, the deformation of that portion can be suppressed as much as possible. At this time, since the suture thread is prevented from being worn by the cord, it cannot be easily cut. Further, the leather piece is difficult to be deformed because its expansion and contraction is suppressed by the sheets having different expansion and contraction directions. Therefore, this elliptical sphere is hard to deform.

[0015]

EXAMPLE In this example, the skin of the leather piece 10 is made of leather. First, as shown in FIG. 5, the spindle-shaped leather piece 10 has a nonwoven fabric 10b and a nylon taffeta 10c on the back surface of the skin 10a. The woven cloth 10d and the synthetic resin waterproof film 10e are bonded together. The non-woven fabric 10b, the nylon taffeta 10c, the woven fabric 10d, and the waterproof film 10e have different expansion and contraction directions. The stretch direction of the cloth or film has a direction determined by the weaving method, molding method, etc., and there is almost no stretch in the direction perpendicular to the direction. The non-woven fabric 10b and the woven fabric 10d may be natural fibers or synthetic fibers. Nonwoven fabric 10b, nylon taffeta 10c, woven fabric 10
The stacking order of d is not limited to the above and may be any order. The waterproof film 10e is always the innermost surface.

The waterproof film 10e may be formed by adhering a film, or may be obtained by resin coating.
The waterproof film 10e prevents water that has entered the oval sphere A from the openings Q and the seams from seeping into the skin 10a, the non-woven fabric 10b and the like. By the way, when the ellipsoidal sphere was immersed in water, water penetrated into the inside of the ellipsoidal sphere, but hardly penetrated into the nonwoven fabric 10b or the like. Therefore, even if water enters the ball during the competition, most of the water can be easily escaped through the seam by holding the ball by hand and shaking it off.

With this spindle-shaped skin piece 10, an elliptic sphere A having an opening Q is formed without sewing the edges of a part of the skin piece 10 in the same manner as in the conventional case. As the suture thread, a thread made of high-strength fiber, for example, Kepler (trade name of DuPont, USA) is used.

As shown in FIGS. 1 to 4 and 10, a reinforcing piece 11 and a patch 12 having substantially the same shape are bonded and sewn (sew line b) to the opening Q of the elliptic sphere A. . The reinforcing piece 11 is for effectively preventing the leather piece 10 from tearing, and is made of a non-woven fabric made of carbon fiber, glass fiber or the like, which is light and tough. Various kinds of leather can be used as the padding 12, and the adhesive surface to the reinforcing piece 11 is the silver surface (Gin) side.

Further, as shown in FIG. 2, the latch 13 of the tube P is sewn to one of the skin pieces 10 of the opening Q (sew line C).
Have been. After the tube P is attached to the latch piece 13 by passing the rubber stopper piece 17 attached to the air inlet 16 of the tube P through the central hole 13a of the latch piece 13, the tube P is formed from the opening Q to the skin piece 10. Put in the ellipsoid. As shown in FIG. 2, a leather string 14 is passed through the latch skin 13, and two of the holes (eyelets) 15 at the edge of the leather piece 10 formed in advance with this leather string 14 (FIG. 3b, symbol 15a). Pass through.
The sticker piece 13 has an adhesive surface to the patch 12 on the outer side, and an adhesive is injected from the opening Q to bond the patch 13 to the patch 12.

After a certain amount of air is introduced into the tube P from this state, the edges of the unsewn openings Q are sewn together with a thread a made of Kepler as shown in FIGS. Has removed the leather strap 14). At this time, the air inlet 16 of the tube P is located substantially in the center of the opening Q. For this suturing, a hole through which the thread a passes is preferably formed in the leather piece 10, the reinforcing piece 11, and the padding 12 in advance.
After the suturing is completed, the leather cord 14 is passed through each eyelet 15 in order from the center to the outside as shown in FIG. This tightening interval L is made narrower than in the past. The end of the leather string 14 is passed through the eyelets 15 at both ends, and then protruded from the opposite side through the lower side of the suture edge. At this time,
As shown in FIG. 4, the thread a is inside the surface of the leather cord 14.

As shown in FIG. 6, the suturing with the thread a is performed by abutting the edges of the skin pieces 10 and 10 a little upward and feeding the thread a laterally through the upward part, When the ball A is in use, its upward portion 10 'first comes into contact with another object (ground), so that the wear of the yarn a is reduced as much as possible.

If the tube P is damaged, the thread a in the opening Q
Then, as in the conventional case, the leather string 14 is unwound, the opening Q is opened, and the tube P is replaced.

[0023]

Since the present invention is constructed as described above, the deformation can be suppressed as much as possible.

[Brief description of drawings]

FIG. 1 is a perspective view of one embodiment.

FIG. 2 is a partially removed perspective view of the same embodiment.

3A is a partial perspective view seen from below in a section taken along line XX of FIG. 1, and b is a partial perspective view seen from above.

FIG. 4 is a sectional view taken along line YY of FIG.

FIG. 5 is a sectional view of a leather piece.

6A and 6B are partial perspective views and partial plan views of another embodiment.

FIG. 7 is a perspective view of a conventional example.

FIG. 8 is a sectional view taken along line XX of FIG. 7;

9 is a sectional view taken along line YY of FIG.

FIG. 10 is an explanatory view of stitching the leather pieces.

[Explanation of symbols]

 1, 10 Leather piece 10a Skin 10b Nonwoven fabric 10c, 10d Woven cloth 10e Waterproof film 11 Reinforcing piece 12 Patch skin 13 Rattle skin 3, 14 Leather cord 15 Eyelet 2, 16 Air inlet a Thread b, c Suture line P tube A Oval ball

Claims (2)

(57) [Scope of utility model registration request] 1. A plurality of spindle-shaped skin pieces 10 are sewn together at their side edges and turned inside out, and a part of the sewn edges is an elliptic spherical shape having an opening Q without being sewn therein. The tube P is inserted through the opening Q, the air inlet 16 of the tube P is located in the opening Q, and the edge of the opening Q is a leather string 14 extending over both edges at a predetermined interval along the edge. In the drawn elliptic sphere A, the skin piece 1 of the opening Q
An ellipsoidal ball for ball game, characterized in that the zero edges are sewn together from the outside and the suture thread a is located inside the surface of the leather cord 14. 2. The elliptical sphere for ball games according to claim 1,
A plurality of sheets 1 are provided on the back surface of the skin 10a by the skin piece 10 described above.
An ellipsoidal ball for ball game, wherein 0b and 10c are adhered to each other in different directions of expansion and contraction.