JP2012232079A - Sound source ball and ball for ball game - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ball for ball game for a visually impaired person, which is extremely suitable for a game, flies and emits sound, and can be caught aurally, in order to solve the following problems: a conventional ball for ball game does not emit sound or cannot be caught aurally, while there are many visually impaired persons who enjoy ball games.SOLUTION: The sound source ball is configured to have projections or grooves formed on the whole inner surface of a hollow ball. This sound source ball is encapsulated in balls for various ball games.

Description

The present invention relates to a sound source sphere that emits sound during impact or flight, and the sound source sphere can be used alone as a ball game ball or toy for various purposes, or the sound source sphere can be used as another sphere. It can also be used as a ball for ball games. More specifically, it is a ball related to ball games that is played mainly by hearing, not by sight, and even visually handicapped people can play by relying on the sound emitted from the playing ball.

Even visually impaired people have come to actively enjoy ball games. These ball games of visually handicapped people are played by relying on the sound emitted from the ball for the ball game, because they devise a sound to the ball to be used and cannot be grasped visually. Specifically, a bell is put in a rubber ball used in a dodge ball, and a ball such as a goal ball that puts the ball in a goal like soccer, or particles such as small beads are encapsulated in a ping-pong ball when rolling There is "Sound Table Tennis" played with a sounding ball.

In addition, blind blind tennis, which is tennis for the visually impaired, is a ball used for ball games by embedding a ball that encloses particles such as small beads in the ping-pong ball used in “Sound Table Tennis” in the center of a spherical urethane sponge. Used as a play.

These visually impaired balls for ball games have a relatively simple structure as described above, and the state of the force when hit with a racket or bounce is directly from the sound source. Because it is emitted and reflected, it is useful for visually handicapped persons who perform ball games as information for the next play to capture the ball of the ball game, enjoy the play, and is established as a competition.

On the other hand, in addition to these ball balls for deaf people, a ball that produces sound by putting particles such as small beads in the ball has been devised and devised.

JP-A-7-225584

In this way, ball balls for visually impaired people who enjoy ball games are devised and actually played, but many of these deaf people's ball games are played on the platform, ground, floor, etc. Played on the premise of rolling. In other words, there are few ball games based on the assumption that balls used for ball games fly in the air, such as hitting flying balls like a ball game performed by a healthy person.

There is a view that visually impaired people who rely on hearing to play cannot respond to the speed of the ball of the flying ball game, but apart from that, particles such as small beads and bells as described in the background art There is a problem as a structural defect of a ball for ball games that uses an encapsulated ball as a sound source.

Specifically, these conventional ball games balls roll on the platform, floor, or ground, or when the ball for ball games is hit with a racket or the ball for ball games bounces on the platform. This is because it sometimes makes a loud sound, but the sound emitted from the sphere becomes small especially during flight, and it is difficult for a hearing-impaired person to capture the ball of the ball game.
The same applies to other spheres that emit sound, and it is difficult for a visually impaired person to catch a sphere in flight as a ball for ball games.

The object of the present invention has been made in view of the current situation as described above, and is an advantage of a ball for ball games having a structure in which particles such as small beads are encapsulated as a sound source in a hollow sphere in the prior art. A ball that is used for ball games that are played mainly by the auditory sense, such as the visually impaired, while taking into consideration the characteristics that the state of force when hit with a racket or bounced is directly emitted from the sound source and reflected. Not only when hitting the ball for the ball game or hitting the ground, floor, or platform, but also when the ball for ball game being played is in a flying state, the sound from the ball for ball game An object of the present invention is to provide a ball for ball games that is excellent in competitiveness and can be captured by hearing.

The sound-producing sphere described in claim 1 of the present invention becomes a sound source inside a hollow sphere excellent in reflecting the state of the ball for ball games in the sound as described in the prior art. In a structure including particles such as beads, in order to achieve the above-described object, the hollow sphere has a structure in which a protrusion or a groove is provided on the entire inner surface (hereinafter, referred to as a structure). , Referred to as the “sound source sphere”). Accordingly, the particles serving as the sound source are made of a material that emits sound when the particles collide with each other. It is also possible to select the material of the particles, the material of the hollow sphere, the structure of the inner surface of the hollow sphere, the coating of the inner surface, etc. so that the sound source particles will emit sound even if they collide with the inner surface of the hollow sphere. desirable.

As the material of the hollow sphere of the sound source sphere, plastic, celluloid, hard rubber, or the like is used in accordance with the characteristics of the ball game in the same manner as a sphere played by a visually impaired person. Particles such as bead balls used as a sound source are used in consideration of the quantity and weight according to the characteristics of the ball game as well as the material. In particular, the weight of the beads is important. In consideration of the competitiveness of the ball game, the center of gravity of the ball of the ball game changes depending on the weight of the contained particles, so that irregular movements such as irregular are not caused based on this. It is desirable to be as light as possible.

The ball game ball described in claim 2 of the present invention uses the sound source ball of claim 1 as a core, and is characterized in that a space is provided between the sound source ball and the ball game ball corresponding to the outer layer. It is a ball for ball games of the structure. It is desirable that the sound source sphere of claim 1 avoids being fixed in close contact with a material having as high absorptivity as possible so that the sound can be heard by the player. In view of safety and the like, it is inevitable to use such a sound-absorbing urethane sponge or rubber for a ball for ball games.

As described above, the second aspect of the present invention provides a ball game ball that is completely packed and covered with the ball of the ball game of claim 1 that does not completely cover and cover the ball of the ball game that is the outer layer. It is a ball for ball games that has a structure when fixed inside.
First, a diameter of the sound source ball of claim 1 or a through hole slightly smaller than the diameter is provided in the ball for ball game. Insert the sound source ball into this hole. At this time, the sound source ball comes into contact with the side surface of the hole.
Furthermore, the sound source ball of this hole is inserted between both ends of the ball of the ball for ball game with the same material structure as the ball for ball game, and a cylindrical shape (hereinafter referred to as a column) having the same diameter as the hole. This sound source sphere is fixed. In this case, the surface of the cylindrical body that contacts the sound source sphere is a flat surface. As a result, the sound source sphere sandwiched between the cylindrical bodies is merely in contact with the top surface of the cylindrical body, so that a space can be created between the ball for ball games and the included sound source sphere.
In addition, the other surface of the cylindrical body that does not contact the sound source sphere is provided with the same curved surface as the spherical surface of the ball for ball game, so that it becomes a ball as a ball for ball game.

The present invention has the following effects. The sound source sphere of the present invention described in claim 1 has protrusions or grooves on the hollow inner surface that is a feature of the present invention. This is because the sound source sphere encapsulated in the sound source sphere is a particle serving as a sound source. This has the effect of increasing the chance of collision with the inside of the sound source sphere.

This is because, as a principle of generating the sound of the sound source sphere, when kinetic energy such as impact from the outside is applied to the ball for ball game, the particles that become the sound source enclosed in the sound source sphere This is because when collision occurs between particles that are sound sources, and the collision sound generates sound from this sound source sphere, there is no sound even though this ball ball is moving, this sound source This is because it is in close contact with the surface inside the sphere and does not collide.

In other words, a phenomenon that occurred in a ball game sphere with a sound source ball in which particles such as small beads were encapsulated in a conventional ping-pong ball, there was no new impact from the outside at the time of flight, this ball game ball rotated It seems that the sound disappears from the ball of the ball game when moving, because the particles contained in the conventional sound source sphere move in the same direction along the inner surface of the sound source sphere by centrifugal force, This is because the collision between the inner surface of the sound source sphere and the particles has been extremely reduced, and by providing protrusions and grooves on the inner surface of the sound source sphere as in the sound source sphere of claim 1, which particles are always used as the sound source. There is an increased chance of repeated movements such as colliding with one of the protrusions or grooves and then rebounding and colliding with another protrusion or groove. Therefore, the sound was emitted from the sound source ball of claim 1 even during flight.

The effects of the invention of claim 2 are as follows.
As described in the means for solving the above-described problems, when the sound source ball of claim 1 is included in the ball game ball in the structure of claim 2, the sound source ball and a sound absorbing property such as urethane sponge are included. A space can be created between a certain outer layer. With this space, the sound at the time of collision with the particles serving as the sound source inside the sound source sphere can be heard outside the ball of the ball game.
If there is no space, that is, if the sound source sphere is covered closely with the outer layer, the sound absorbing urethane sponge in the outer layer will be used when the sound source particles collide with the inner surface of the sound source sphere. As a result, the vibration of the sound source sphere is weakened, the impact sound is reduced, and a phenomenon that the sound cannot be heard occurs outside the ball of the ball game.

For this reason, the sound source sphere requires a space between the urethane sponge and the like constituting the outer layer, but in the case of the conventional technology, a space slightly larger than the diameter of the sound source sphere included in the urethane sponge constituting the outer layer. The space has been secured just by placing the sound source sphere contained in it without fixing it.

However, since the sound source ball is not fixed, the center of gravity of the ball of the ball game always moves. In general, the center of gravity of a ball for ball games coincides with the center of the ball. This is because if the center of gravity of the ball for ball game is shifted from the center of the ball, the rotation and flight of the ball for ball game become irregular and the game performance is lost.
In the case of claim 2, the sound source sphere of claim 1 is inserted into a through-hole into which the sound source sphere of claim 1 passes through the center of the ball for ball games, and a cylindrical body having the same length from both ends of the hole, It is easy to match the center of the ball for ball games with the center of the sound source sphere by fixing the sound source sphere between them. Also from such a thing, provision of the ball | bowl for ball games which was the objective of this invention and was extremely excellent in the competitiveness can be achieved.

It is the front view which cut off some sound source balls concerning the present invention. It is a figure of a part of section which shows a modification of a projection part given inside a sound source sphere concerning the present invention. It is the front view which partly cut off at the time of enclosing the sound source ball for ball games concerning the present invention in a hollow ball. It is the front view which partly cut off when the sound source ball for ball games concerning the present invention was enclosed in the ball of the sphere. It is the front view which partly cut off at the time of effectively enclosing the sound source ball for ball games concerning the present invention. It is the front view which cut off some conventional sound source balls.

Embodiments of a sound source sphere according to claim 1 of the present invention will be described in detail below based on specific examples shown in the drawings.
FIG. 1 shows a sound source sphere according to claim 1 of the present invention. The left side of FIG. 1 shows the surface of the sound source sphere (reference 1 (A)), and the right side of FIG. It is a front view showing 1 (a).
Furthermore, the figure shown by the circle | round | yen and ellipse corresponding to the code | symbol 3 represents the processus | protrusion described in Claim 1, and the code | symbol 2 represents the cross section. A sound is emitted when a protrusion formed inside the sound source sphere collides with a particle that is a sound source of the sound source sphere represented by reference numeral 4.
Note that the protrusions or grooves of the grooves expressed in the specification of the present invention are expressed by the recessed portions instead of the protrusions.

One embodiment of the ball game of claim 1 is a ball for a “sound table tennis” ball game. In this case, the sound source ball shown in FIG. 1 is used as it is as a ball for ball game.
The sound source sphere is made of celluloid and has a diameter of 39 to 40 mm, which is the same as a table tennis sphere conventionally used. The encapsulated sound source particle is a plastic hollow sphere, with a diameter of 4 to 3 mm. The protrusion inside the sound source sphere is 1.5-2 mm in height and diameter. A 3 mm semicircle is applied.

Further, as one of the forms for the ball game of claim 1, when a hollow large sphere such as a “goal ball” of a visually handicapped person is used, the sound source ball (reference numeral 12) of claim 1 is used as the ball game. It is carried out by enclosing it as it is without fixing it to the ball (FIG. 3). In this ball game, a large force is applied to the ball of the ball game, such as throwing the ball ball strongly, so this sound source ball has the same shape and dimensions as the sound source ball used in the above-mentioned `` sound table tennis '', but the material of the sound source ball is the same Use stronger plastics and polymers. In addition to plastic, the particles that make up the sound source are made of metal spheres with high specific gravity, making it easier to produce sound. FIG. 3 is a front view showing a state in which a part thereof is broken and shows an internal state, and a sound source sphere is enclosed in a hollow sphere without being fixed.

Furthermore, as one of the forms for ball games of claim 1, when using a ball which is not hollow and is packed in the middle as in “blind tennis” of the visually impaired (FIG. 4), the diameter is about 85 to 90 mm. A spherical space about 2 mm larger than the diameter of the sound source sphere is provided in the urethane sponge sphere and enclosed.
The sound source sphere (reference numeral 1 (A)) has a diameter of 40 mm, and the protrusion inside the sound source sphere has a semicircular shape with a height of 1.5 to 2 mm and a diameter of 3 mm provided on the inner surface of the sound source sphere. . The particles used as the sound source are hollow plastic spheres with a light specific gravity, and four particles having a diameter of about 3 to 4 mm are placed.
The reason why the sound source sphere is placed in a spherical space that is approximately 2 mm larger than the diameter of the sound source sphere is to form a slight space (symbol 19) between the sound source sphere and the urethane sponge constituting the outer layer.
Thereby, sound absorption by the urethane sponge can be reduced.

With respect to the shape of the projection of the sound source sphere of claim 1, a form other than that shown in FIG. 1 is shown in FIG. FIG. 2A is a part of a cross section showing that protrusions of different sizes are provided on the inner surface of the sound source sphere. Reference numeral 5 is a large protrusion and reference numeral 6 is a small protrusion. Reference numeral 8 represents a groove provided in the sound source sphere. FIG. 2 (b) shows that the protrusion has a triangular cross section. Thus, the shape of the protrusion according to claim 1 of the present invention is the size of the particle serving as the sound source to be enclosed, It is taken into account by the material and the type of ball game.

Further, as shown in FIG. 2 (c), the sound source sphere of claim 1 has a surface (reference numeral 22) on the outside of the sound source sphere depending on the type of ball game and the form of the ball for ball game. You may reflect the protrusion of. When the groove (reference numeral 23) on the outer surface of the sound source sphere is a ball game ball having a structure in which the outer layer is wrapped in the sound source sphere, the vibration of the impact with the particles serving as the sound source is generated in the space of the groove. (Reference numeral 23) has an effect of leaving the vibration.

FIG. 5 shows an embodiment of claim 2 from a cross-sectional view of a ball for ball games.
This ball for ball games is a urethane sponge sphere having a diameter of about 85 to 90 mm. The sound source sphere (reference numeral 1) of claim 1 made of plastic or polymer contained in the sphere is provided with a through hole having the same or slightly smaller diameter than the 40 mm diameter of the sound source sphere. A sound source sphere (reference numeral 1) is inserted into the through hole, and a cylindrical body (reference numeral 15) is inserted from both ends of the through hole. This cylindrical body is made of the same urethane sponge as the ball for ball games. Further, this cylindrical body is a surface (reference E) having one surface having a flat surface (reference D) and the other surface having the same curved surface as the spherical surface of the ball for ball games. This cylindrical body is fixed by an adhesive at a contact surface with a through hole of a ball for ball games.

The sound source sphere is arranged at the center of the ball game sphere by contacting the ball for ball game with the symbol C and further contacting with the symbol B of the cylindrical body. At this time, a symbol A is created as a space between the ball for the ball game.

The protrusion inside the sound source sphere is a semicircular shape with a height of 1.5-2 mm and a diameter of 3 mm provided on the inner surface of the sound source sphere. The sound source particle (symbol 4) is a plastic with a low specific gravity. A hollow sphere made of steel is used, and four of those having a diameter of about 3 to 4 mm are contained.

1 (a) Cross section 1 of a ball game sound source sphere according to the present invention (a) Surface 2 of a ball game sound source sphere according to the present invention 3 Cross section of a projection of a ball game sound source sphere according to the present invention 3 Ball game according to the present invention Projection of sound source sphere 4 for sound source Particle 5 as sound source Deformation of projection of sound source sphere for ball game according to the present invention (large)
6 Deformation body (small) of a projection of a sound source ball for ball game according to the present invention
7. Deformation body of the ball of the sound source ball for ball game 8 according to the present invention 8 Groove 9 of the sound source ball for the ball game according to the present invention 10 Deformation body of the projection ball of the sound source ball according to the present invention 10 Groove 11 of sound source sphere (a) Cross section 11 of hollow game sphere (b) Surface 12 of hollow game sphere 13 (a) Cross section 13 of sphere game ball (a) Sphere of ball Surface 14 of a game ball Cross section 15 of a ball game ball according to the present invention Cross section 16 of a cylindrical body arranged in a ball game ball according to the present invention (a) Cross section 16 of a conventional sound source ball (A) Conventional sound source ball Surface 17 of the sound source ball 18 Broken surface 19 of the ball for ball game 19 Space 20 between the sound source ball and the outer layer (ball game ball) Cross section 21 of the protrusion of the sound source ball 21 Surface 22 inside the sound source ball of the present invention External surface 23 of the sound source sphere of the present invention Groove A outside the sound source sphere of the present invention Space B Contact surface C with the cylinder 15 Outer layer Surface having the same curved surface as the spherical surface of the ball for ball game flat surface E cylindrical body of the contact surface D cylindrical body of

Claims (2)

A sound source sphere, wherein a plurality of particles serving as a sound source are encapsulated inside a hollow sphere, and a protrusion or a groove is formed on an inner surface of the sphere. In the structure in which the sound source ball according to claim 1 is arranged inside the ball game ball packed inside, first, a through hole passing through a place where the sound source ball is to be arranged is provided in the ball game ball. Two cylinders with the same material structure as the sphere, one end with the same curved surface as the outer surface of the ball for ball games, the other end with a flat surface, and the same diameter as the above-mentioned through hole prepare.
A ball for ball games characterized by a structure in which a sound source ball is sandwiched between flat surfaces of the pair of cylindrical bodies and inserted into a through hole of the ball for ball game.

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