JPH03215Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a structure in which numbers are displayed on the surface of a gateball.

In recent years, gateball has been recognized as having a remarkable effect on improving the health and relieving stress of middle-aged and elderly people, has become widely popular, and has recently become popular among young people as well, and is now becoming a national sport.

Balls used in gateball must be made of wood or synthetic resin, have an outer diameter of 7.5 cm, weigh between 170 and 240 g, and have numbers displayed in two places on the surface.

For wooden balls, numbers are printed or carved on the surface and then painted into the recesses to make them stand out.For synthetic resin balls, pre-formed numbers are used in addition to the above method. Fitted into the carved recess, Jitsukō 58-13873
As shown in the above publication, there is also a method in which a synthetic resin plate is fixed to the surface of a core sphere with a space formed in the shape of a number in advance, and synthetic resins of different colors are injected around the space and into the space.

By the way, the game of gateball has generally been thought of as being played outdoors, and in special cases such as playing indoors, there are problems in which the ball cannot be used because it is slipping too much. Ta. In order to overcome this difficulty, the applicant developed a hollow gate ball in which the rolling speed of the ball could be adjusted by inserting a large number of small metal balls that moved smoothly inside the ball. We provide something that allows play on indoor slippery floors.

The present invention aims to provide such a hollow gate ball having a structure that allows numbers to be suitably written.
In other words, instead of using a stamping method that would cause the numbers to wear out and become invisible over time, we decided to embed the numbers into the gateball, which would suit the hollow structure of the gateball. That's what I did.

Therefore, the gist of the present invention to achieve this purpose is to use a pair of hemispherical spherical shells having male and female fitting parts that fit into each other, and to form a hollow shape. In the gate ball, each of the hemispherical spherical shells has a number display section that displays numbers with the same radius of curvature as the spherical shell, and a number display section that extends around the number with a radius of curvature smaller than that of the spherical shell, and has a number of protrusions on the inner surface. consisting of a numeral member having a support portion formed with a numeral, and a hemispherical shell forming member forming a hemispherical shell in which the numeral member is embedded within the thickness, leaving a numeral face on the outer surface side and a protrusion tip on the inner surface side, Furthermore, the hollow gate ball is characterized in that the inner projection of the number display member is provided with a positioning pin fitting hole during manufacturing.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1A shows the separated state of the pair of hemispherical shells 1 and 2 that make up the gateball. In the figure, the upper hemispherical shell 1 is male, the lower hemispherical shell 2 is female,
By fitting these together at their edges and fixing them with adhesive, a hollow gate ball is formed.

In these figures, 3 and 4 are hemispherical shell forming members (hereinafter referred to as main bodies), and 5 and 6 are numerical display members embedded in the respective main bodies 3 and 4 except for a part.

FIG. The numbers 1 and 2 are arranged in a certain relative position (for example, in the same direction).

Figures 2A to 2D show numeric display members 5 and 6, which provide the same surface along the radius of curvature of the outer surfaces of the bodies 1 and 2 to display predetermined numbers ( In the illustrated example, it consists of a number display section 9 for displaying "1") and a circular support section 8 that extends around the numeral display section 9 with a radius smaller than the radius of curvature of the main bodies 1 and 2. That is, the number display members 5 and 6 are
It has a generally dish-shaped support part with a numeric display part protruding from the outer surface thereof.

Further, a large number of protrusions 10 are provided on the inner circumferential surface of the support portion 8 . This is for fixing and stabilizing the number display members 5 and 6 between them and the main body 1.

In addition, the chain lines shown in FIG. 2 C and D indicate the main body 3,
The inner and outer peripheral surfaces of 4 are shown.

In addition, through holes 11 and 11 are formed by penetrating the support portions 8 of the number display members 5 and 6 inside and out.
The blind hole 12 formed in the protrusion 10 is used to improve the flow when filling the main body forming member during manufacturing, which will be described later.The blind hole 12 formed in the protrusion 10 is used to insert the numerical display members 5 and 6 into the mold during the manufacturing of the hemispherical shell. This is for positioning and fixing.

Such number display members 5 and 6 are constructed by leaving the surface of the number display portion 9 on the outer surface of the hemispherical shell.
It is embedded within the thickness of the bodies 1, 2, forming a hemispherical shell.

To explain the manufacturing procedure, first, numeric display members 5 and 6 are formed in advance, and these are placed on the male surface of a mold (not shown) for forming a hemispherical shell. The blind holes 12 are fitted into the pins, and then the female die of the mold is placed in close contact with the numeral surface.

Then, a molten synthetic resin for forming a hemispherical shell is filled into the hollow space of the mold, solidified, and then taken out from the mold.

Then, a hemispherical shell with male and female parts formed separately,
If necessary, small metal balls are filled and then fitted together to form a gate ball as described above.

Balls made in this way have numbers flush with the surface of the ball and do not disappear even when worn, making them easy to see and play. Furthermore, by adding fluorescent pigments to the synthetic resin used for the numbers, the numbers can be easily read even in a dark room. Moreover, as mentioned above, such hollow gate balls are originally made for the purpose of filling the hollow space with small metal spheres, so there is no unevenness on the inner surface of each hemispherical shell formed as described above, and the small metal balls are It is necessary to be able to guarantee smooth movement of the ball, and manufacturing as in this example is suitable for providing the inner surface of the gate ball with a smooth circumferential surface. Note that the blind hole is preferably made sufficiently smaller than the diameter of the small metal sphere to be filled, or it is preferably filled after the hemispherical shell is manufactured.

FIG. 3 shows other "numerical" numeral display members used for manufacturing in this manner.

In addition, as an application of the present invention, it is also possible to display alphanumeric characters, marks, and other figures and patterns by using a numerical display member or by using another similar member. This is effective when numbers are not required for practice balls, or by displaying individual initials, team names, etc., to further enhance the interest of the game.

As mentioned above, the gate ball according to the present invention has a structure that displays numbers suitable for a hollow type, and can be manufactured relatively easily, and its practical benefits are extremely large. It is.

[Brief explanation of drawings]

Figure 1A is a sectional view showing the hemispherical shell of the gate ball separated, Figure 1B is a partial sectional view of the fitting part, Figure 2A, B, C, and D show the numerical display members. is a plan view, b is a bottom view, c is a diagram A-A.
D is a sectional view taken along the line B-B of FIG. FIG. 3 is a plan view showing a number display member for other "numbers". 1, 2... Hemispherical shell, 3, 4... Main body, 5, 6...
... Numerical display member, 7... Concave/convex engaging part, 8... Support part, 9... Numerical display part, 10... Protrusion, 11...
Through hole, 12...Blind hole.

Claims (1)

[Scope of utility model registration request] A gate ball formed into a hollow shape using a pair of hemispherical spherical shells having male and female fitting portions that fit into each other, each of the hemispherical spherical shells comprising:
A numeral display part that displays numerals with the same radius of curvature as the spherical shell, a numeral member having a support part that extends on the periphery of the numeral with a radius of curvature smaller than that of the spherical shell and has a large number of protrusions formed on the inner surface, and an outer surface side. and a hemispherical shell-forming member that forms a hemispherical shell in which the numeral member is embedded within the thickness, leaving a numeral surface and a protrusion tip on the inner surface side, and furthermore, the inner protrusion of the numeral display member has a hemispherical shell forming member that has a numeral surface and a protrusion tip on the inner surface side. A hollow gate ball characterized by having a positioning pin fitting hole.