JPS6138606Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) This invention relates to a volleyball practice device that is placed above the net to bounce the ball.
This relates to practice equipment that makes follow-up and other exercises possible.

(Prior art) Conventionally, as a volleyball practice tool, an air-filled bag formed into a flat plate is covered with an outer bag, and a supporting rod attachment part is provided on the back of the outer bag, and the combined body allows the device to be folded freely. Japanese Utility Model Publication No. 31-4433 discloses a structure in which a combined support rod is attached to the support rod mounting portion.

In such practice equipment, the air-filled bag, that is, the reflector and the block plate, are formed into a flat plate shape, so that the reflection angle relative to the incident angle of the spiked ball is always constant. Since the balls that bounced back were monotonous and had little variation, there were problems with this method, such as the inability to practice in practice when receiving balls that bounced back from the reflector.

In addition, in a volleyball practice device in which the ball is bounced by a plurality of horizontal bars,
U.S. Pat. No. 3,897,950 discloses a device in which the angle of the bar arrangement is changed by changing the sector angle using a wing nut, thereby changing the angle of the entire bar.

However, this volleyball practice device
Although the angle of the entire bar can be changed, since multiple bars are arranged on the same plane, the angle of reflection relative to the incident angle of the spiked ball is always constant, and the ball bounces back. It had some shortcomings, such as the monotonous change in direction it received, making it ineffective for practicing receiving.

(Problems to be solved by the invention) This invention was made for the purpose of solving the above-mentioned problems of the conventional technology. To provide a training device which enables practical receiving practice because the direction and angle of a ball bouncing back from a blocker change to a complicated angle similar to when the ball bounces off a blocker.

(Means for Solving the Problems) In order to achieve the above object and solve the problems, this invention forms a plurality of ball-rebounding uneven parts on the surface of a reflective substrate having a grip part, and The reflective substrate is configured to be tilted forward.

(Function) With the above configuration, this device allows the spiked ball to hit the plurality of uneven parts arranged on the surface of the reflective substrate, making it difficult to move vertically or horizontally. Since the reflective board is tilted forward, the ball does not bounce into the opponent's court and can surely bounce back into the spiker's court.

(Example) This invention will be described below based on an example shown in the drawings.

FIG. 1 shows the usage state of the training device according to the embodiment of this invention.
The reflective substrate 3 is positioned above the net 4 while holding it in both hands. As shown in FIGS. 2 and 3, the reflective substrate 3 has an uneven portion A formed by forming a hemispherical convex portion 5 on the front surface. Note that the convex portion 5 may have a conical shape with a rounded top end. The ball-reflecting surface of the corresponding reflective substrate 3 is bent forward at an appropriate angle with respect to the grip portion 2, as shown in FIG. In the illustrated example, the lower half 3a is the grip part 2.
It has a two-step bent structure in which the upper half portion 3b is inclined at an angle β relative to the grip portion 2. The angle α above is approximately 10°, and the angle β is approximately
Approximately 30° is preferable. The number and angle of the bent portions are arbitrary and are not limited to those shown.

When the ball 6 hits the front surface of the reflective board 3, the ball is bounced in different directions depending on the location of the hit, as shown in Figure 2, and changes in the same way as a blocked ball in a real game, so it is suitable for real battles. This allows for follow-up practice. In particular, in this invention, since the ball-reflecting surface of the reflective substrate 3 is bent in the forward direction, the course in the height direction of the bouncing ball can be varied even in the absence of the uneven portion A. In order to change the horizontal course of the bouncing ball, the blocker may appropriately tilt the reflective substrate 3 to the left or right, or the blocker may apply different supporting forces to the left and right by hand.

The height of the reflective substrate 3 relative to the grip portion 2 can be adjusted. FIG. 4 shows an example of the height adjusting means. That is, the support rod 7 fixed to the reflective board 3 is fitted into the cylinder 8 so as to be able to swing freely, and the stopper bolt 10 is inserted into an arbitrary adjustment hole 9 of the support rod 7 and screwed. The grip portion 2 is formed in a tube 8.

FIG. 5 shows an embodiment in which the supine angle of the reflective board 3 can be adjusted, in which a support plate 13 fixed to both sides of the reflective board 3 is rotatably mounted on the upper end of the grip part 2 via a thumbscrew 14. By supporting the support plate 13 and tightening the thumb screw 14, the support plate 13 can be fixed at any angular position. Note that rotation can be reliably stopped by forming radial projections or recesses 15 on the side surface of the support plate 13 and engaging them with recesses or projections on the inner surface of the grip section 2.

6 to 9 show several examples of the reflective substrate 3. FIG. In FIG. 6, the substrate 16 is covered with an elastic material 17, and the front surface of the elastic material 17 has a hollow part 18.
A convex portion 5 is formed.

FIG. 7 shows a substrate 16 covered with an elastic material 17 such as synthetic rubber having irregular unevenness A on the front surface. FIG. 8 shows a substrate 16 covered with an elastic material 17 having a hollow part 19 of a multi-layer structure.
The figure shows a structure in which a multilayer elastic body 20 such as a sponge is filled between a substrate 16 and an elastic material 17.

In FIG. 10, the weight of the substrate 16 is reduced by making the substrate 16 perforated with holes 21. The substrate 16 is fixed by welding or the like to a gate-shaped frame 22 formed by bending an aluminum pipe or the like.

The substrate 16 may be made of any material such as aluminum or other metal plate, plastic, or wood. Also, instead of the substrate 16, a grid-like or net-like material may be used. Alternatively, it is also possible to construct a structure in which the elastic material is directly stretched over the frame 22 without using a substrate. The elastic material 17 may be made of any material such as vinyl, rubber, or leather.

(Effects of the invention) As described above, according to this invention, since the surface of the reflective substrate is formed with an uneven part for bouncing the ball, the ball changes its direction and speed in various ways due to the uneven part. The ball's landing position is spread across the entire court, allowing for follow-up practice suitable for actual play.
Also, since you will develop your ability to read the course of a bouncing ball, you can practice receiving in a practical manner.

In particular, since the reflective board, which has uneven parts on its surface to bounce the ball, is tilted forward, there is no need for the person holding the volleyball practice equipment to intentionally tilt the reflective board forward. By simply holding the ball up in a comfortable posture, you can bounce the ball in a variety of ways, with sharp angles and courses, which can greatly increase the effectiveness of your practice. or,
Since the reflective substrate is tilted forward, the ball that bounces back is less likely to miss the opponent's court, which has various effects such as making it possible to practice more efficiently for actual battles.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing how the training device of this invention is used, Fig. 2 is a side view of the same as above, Fig. 3 is a perspective view of the practice device, and Fig. 4 is an embodiment of the height adjustment means. FIG. 5 is a vertical side view of the grip portion, and FIG. 5 is a perspective view showing an example of the angle adjustment means of the reflective substrate. FIGS. 6 to 9 are vertical side views showing structural examples of the reflective substrate. FIG. 10 is a partially cutaway perspective view showing an example of a reflective substrate. 1: Exercise equipment, 2: Grip part, 3: Reflective board, A: Uneven part.

Claims (1)

[Scope of utility model registration request] A plurality of uneven portions A for rebounding the ball are formed on the surface of the reflective substrate 3 having the grip portion 2, and
A volleyball practice device 1 in which the reflective substrate 3 is tilted forward.