JPH0413006Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use The present invention relates to a volleyball training device, and more particularly to a volleyball training device that is positioned above the net to bounce the ball and enable following and other practices.

Conventional technology This type of volleyball practice equipment has conventionally had a bouncer for bouncing the ball fixed on a base plate supported by a handle, and this bouncer allows the ball to bounce in a variety of ways. The applicant filed a patent application for the product, which was published in Japanese Unexamined Patent Application Publication No. 1987-
It is disclosed in Publication No. 131463.

Problems to be Solved by the Invention However, in the above-mentioned volleyball practice device, since the bouncer for bouncing the ball is fixedly attached to the board, changes in the bounce direction and bounce speed when the ball bounces are actually caused. It was not always as satisfying as when compared to proactive manual methods.

Means for Solving the Problems The present invention provides a variety of changes to the direction and speed of rebounding by loading the rebounding body so that it can move in and out of the board at appropriate intervals. The aim is to enable aggressive and elastic momentum as well as a variety of bounces of the ball.

Embodiments Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

In FIG. 1, numeral 1 is a supporting frame made by bending a hollow pipe into a U-shape, the upper half of which is used as a board mounting part, and the lower half of which is used as a handle 3; 2 is fixed to the upper half of supporting frame 1;
a reflective plate made of metal such as aluminum alloy or synthetic resin; 4 and 5 are synthetic resin or metal bounce bodies for bouncing the ball; 6 and 7 are bounce bodies 4;
A locking body 5 is used to lock the board 2 to the substrate 2, and a latching member 8 is an elastic body disposed between the bounce bodies 4, 5 and the board 2.

Each of the rebounding bodies 4 and 5 is integrally molded from a hard synthetic resin material or a metal material and has an opening on the substrate 2 side, and has a bulging part 11 and 12 in the center, and a peripheral edge of the bulging part 11 and 12. It is equipped with locking parts 13 and 14. The locking portions 13 and 14 are connected to the bulging portion 11,
It is formed in a flange shape at the base end of 12 and extends parallel to the substrate surface.

Among the respective bounce bodies 4 and 5, the bounce body 4
is formed into a box shape with a U-shaped longitudinal section, whereas the bounce body 5 is formed into a hemispherical shape with an arcuate longitudinal section.

Each of the locking bodies 6 and 7 fixed to the substrate 2 is a ring body with openings 17 and 18 at the center thereof, and locking portions 19 and 20 each having a hook-shaped cross section and a hole parallel to the substrate 2. It consists of mounting flange portions 21 and 22 that extend to. The distance between the inner surfaces of the locking portions 19 and 20 rising from the mounting flange portions 21 and 22 in the direction parallel to the substrate 2 is equal to the distance between the outer surfaces of the locking portions 13 and 14 of the bounce bodies 4 and 5. Furthermore, the distance between the inner surfaces of the openings 17 and 18 is substantially the same as the distance between the outer surfaces of the bulges 11 and 12 of the rebound bodies 4 and 5. Note that the locking bodies 6 and 7 may be formed integrally from the substrate 2. At this time, the locking portions 19 and 20 are formed at appropriate distances from each other at the peripheries of the locking portions 13 and 14 of the respective bounce bodies 4 and 5.

The elastic body 8 is a coil spring that biases the bounce bodies 4, 5 in a direction to separate them from the substrate 2 by an appropriate distance, and each bounce body 4, 5 and each locking body 6, 7 formed as described above are , as shown in FIGS. 2 and 3, the bulges 11 of the rebound bodies 4 and 5,
Openings 1 of locking bodies 6 and 7 for fixing 12 to substrate 2
7, 18, and the locking part 1 of the rebounding bodies 4, 5
3 and 14 are engaged with the locking parts 19 and 20 of the locking bodies 6 and 7, and the protrusions 2a provided on the substrate 2 and the inner surfaces of the bulging parts 11 and 12 of the rebounding bodies 4 and 5 are provided. An elastic body 8 is engaged with the protrusions 4a, 5a, and the mounting flange portions 21,
22 is fixed to the board 2 with screws. Each of the bounce bodies 4 is equipped with large and small elastic bodies 8 at the top and bottom, and each bounce body 5 is equipped with one elastic body 8 approximately in the center. In this state, the locking portions 19 and 20 of the stoppers 6 and 7 form an appropriate distance between the locking portions 13 and 14 of the bouncers 4 and 5 and the substrate 2.

As shown in FIG. 4, which represents the bounce body 4, when the ball hits the bulge 11, the bounce bodies 4 and 5 attached to the substrate 2 in this manner cause the ball to bounce due to the repulsive force of each elastic body 8. The speed of the ball's rebound is accelerated, and the direction of the ball's rebound becomes, for example, direction A [see Figure 4a]. Also, when the ball hits the lower side of the bulge 11, the lower elastic body 8
The rebound speed of the ball is accelerated by the repulsive force of
Due to the inclination effect, the direction B becomes, for example, an acute downward direction (see FIG. 4b). Furthermore, when the ball hits the upper side of the bulge 11, the rebounding speed of the ball is accelerated by the repulsive force of the upper elastic body 8, and the direction of the ball's rebound is changed by the inclination of the bulge 11, for example, upward. The direction C is an acute angle to the side (see Fig. 4c).

The elastic body 8 installed inside each bounce body 4, 5 is
As shown in FIGS. 5 to 7, it may be a conical coil spring (see FIG. 5), or a
A plurality of coil springs may be installed inside each rebounding body 4, 5, and the plurality of coil springs may be coil springs of different sizes with different repulsive forces (see Fig. 6). (7th
(see figure). When using a leaf spring, it is preferable to integrally form a closing plate 25 that closes the opening of the bounce body 5, as shown as a representative example of the bounce body 5. The plate spring may be interposed between the rebounding body 5 and the substrate 2, and the mounting flange portion 22 of the locking body 7 may be fixed to the substrate 2 with screws.

Further, as shown in FIGS. 8 to 9, the elastic body 8 includes an elastic piece 26 that protrudes toward the bounce bodies 4 and 5 at the attachment position of the bounce bodies 4 and 5 on the base plate 2. Should multiple pieces be formed in one piece? (8th
(see figure), or as shown as a representative of the bounce bodies 4 and 5, the bounce body 4,
A plurality of elastic bodies 27 may be formed integrally with the rebound bodies 4, 5 on the inner surfaces of the locking parts 13, 14 of 5 (see FIG. 9), which project toward the substrate 2 side. The free end of the elastic piece 27 formed on the bounce body 4 is in contact with the substrate 2, and by screwing the mounting flange portion 21 of the locking body 6, the bounce body 4 is attached to the base plate 2, and the bounce body 4 is attached to the base plate 2. When the ball hits the bounce body 4, the bounce speed and direction of the ball change due to the elastic action of the elastic piece 27 (see No. 10).

FIG. 11 is a diagram showing a modified example of the bounce bodies 4 and 5 having an elastic body 8 therein. As shown as a representative example of the bounce body 5, the bounce body 5 has a hemispherical bulge 12 with an opening on the substrate 2 side. It is integrally molded with a holding rod 29 extending vertically from the center of the inner surface toward the substrate 2 side. This holding rod 29 is fitted with a coiled elastic body 8, and the end of the holding rod 29 is inserted into the hole of the substrate 2.
0, the rebounding body 5 is attached to the substrate 2 by forming a bulging locking portion 31 at the end of the holding rod 29 on the back side of the substrate 2.

FIG. 12 is a diagram in which a sound deadening material 32 such as synthetic rubber, sponge, etc. is pasted on the board side surface of the locking part 13 of the rebound body 4, which is shown as a representative of the bounce bodies 4 and 5. In this way, the sound of the collision between the locking part 13 and the substrate 2 is absorbed by the sound deadening material 32, and the surface of the substrate 2 is protected. Note that the sound deadening material 32 may be attached not only to the surface on the substrate side but also to the surface on the opposite side.

As shown in FIG. 13, the volleyball training device of the present invention constructed in this way is used with the base plate 2 positioned above the net, and when the ball hits each of the bouncing bodies 4 and 5, it changes its shape. Not only can a corresponding bounce be obtained, but also the bounce speed and bounce direction of the ball can be varied in various ways due to the elastic body 8 built into each bounce body 4, 5.

Effects of the Invention As described above, in the present invention, the rebounding body is loaded so that it can move in and out of the board at appropriate intervals, and the rebounding body itself forms various inclinations depending on how the ball hits the ball, and rebounds elastically. As the ball bounces, the bounce direction and bounce speed change in various ways, and the repulsive force of the elastic body is also added to the ball bounce, so by appropriately changing the direction and speed of the ball hitting the bounce body, It is possible to adjust the strength of the bounce speed of the ball, thereby providing active and elastic momentum and various bounces of the ball as in the actual situation.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention;
Figures 2 and 3 are longitudinal sectional views of each bouncer attached to the board, Figures 4a, b, and c are views showing the ball hitting the bouncer, Figures 5, 6, and Figure 7 is a diagram showing another example of the elastic body, Figure 8 is a sectional view showing an example in which the elastic body is integrally formed on the substrate, and Figure 9 is a diagram showing an example in which the elastic body is integrally formed in the rebound body. A perspective view, FIG. 10 is a sectional view of the bouncer shown in FIG. 9 attached to a board, FIG. 11 is a diagram showing another embodiment of the bouncer, and FIG. 12 is an example of a sound absorbing member attached to the bouncer. FIG. 13 is a perspective view showing a state in which the volleyball training device of the present invention is used. 1... Support frame, 2... Board, 3... Handle, 4,
5... Rebounding body, 6, 7... Locking plate, 8... Elastic body, 11, 12... Swelling part, 13, 14, 1
9, 20...Locking part, 17, 18...Opening part, 2
1, 22...Mounting flange part.

Claims (1)

[Scope of utility model registration request] A base plate 2, a handle 3 for supporting the base plate 2, bounce bodies 4, 5 for bouncing a ball and having bulging parts 11, 12 and locking parts 13, 14, and the bounce bodies 4, 5. and locking bodies 5, 6 having locking parts 19, 20 that are engaged with the locking parts 13, 14 of A volleyball practice device characterized in that the bounce bodies 4 and 5 are mounted so as to be movable in and out of the base plate 2 at an appropriate distance by interposing an elastic body 8 that urges them away from the base plate 2.