JP3936762B2 - Ball practice board - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a practice board for ball games such as baseball, tennis, soccer, rugby, volleyball and handball.
[0002]
[Prior art]
In general, a ball game practice board is installed at one corner of the ground, etc., and it is intended to repeatedly hit the ball against the board surface and hit the ball rebounded from the board surface toward the board surface again. is there.
[0003]
In order to make the above-mentioned ball driving practice effective, it is necessary to follow the ball even if it is shifted to some extent up / down / left / right from its target point (surface). It is important to have an area. Therefore, a large installation space is required for installing the ball practice board.
[0004]
[Problems to be solved by the invention]
However, the ball game practice board, which occupies a large space in the ground, is insufficiently utilized only for the ball driving practice described above, and it has been desired to make it widely usable for other practice methods.
[0005]
Accordingly, an object of the present invention is to provide a practice board for ball games that can effectively use a board surface having a large area. Another object of the present invention is to provide a ball game practice board that can practice with various purposes for each ball game.
[0006]
[Means for solving problems]
In order to achieve the above object, the present invention provides a ball game practice board comprising a board substrate and a support body that supports the board substrate in a wall shape, wherein the board substrate has a glass fiber reinforced plastic as a surface layer. A plurality of board elements having four connecting sides as described above are connected vertically and horizontally, and the corners of the board elements are concentrated, and each corner is cut into a triangular shape. A female screw body that is fixed and has a square outer shape is embedded, and the screw hole of the female screw body is closed by the head of the male screw body that is screwed into this. An antenna for a three-dimensional display or a target for kick practice can be attached, and each ball game can be practiced for various purposes.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. 1 is a front view of a board substrate in which a female screw body is embedded, FIG. 2 is a front view showing a state in which the female screw body is embedded at a location where the corners of the board elements constituting the board substrate are concentrated, and FIG. 3 is a female screw body 4 is a cross-sectional view of the board substrate showing the embedded portion, FIG. 4 is a male screw body screwed into the female screw body, and a cross-sectional view when an adherend is attached, and FIG. 5 is a basketball goal using the female screw body. FIG. 6 is a side sectional view of the board substrate when the antenna for kicking the soccer goal area and a target for kick practice are attached. It is.
[0010]
The ball game practice board 1 includes a board substrate 2 and a support 3 that supports the board substrate 2 in a wall shape. The forming material (for example, wood, metal, concrete, or plastic material) of the board substrate 2 may be freely determined. In the embodiment, as shown in FIGS. 3 and 4, the surface layer 2a is made of glass fiber reinforced plastic, and the middle layer 2b is made. A material selected from wood, metal, glass fiber reinforced plastic, or the like is used for the plastic foam and the back layer 2c, and the respective layers are integrated with an adhesive or the like.
[0011]
The reason why the surface layer 2a is made of glass fiber reinforced plastic is that it is sufficiently resistant to impacts repeatedly hit by the ball and has excellent resilience of the ball. The reason why the intermediate layer 2b is made of plastic foam (for example, thermosetting urethane foam is excellent) is to reduce the weight of the entire board.
[0012]
The board substrate 2 may be a single unit as a whole, but in the illustrated example, board elements 2A, 2B, 2C having a plurality of connecting sides (in the drawing, a rectangle having four connecting sides is shown), 2D is connected in the vertical and horizontal directions. Connecting the board elements has the advantage of being transported in a small state and assembled large.
[0013]
A female screw body 4 is embedded at an appropriate position of the board substrate 2. As shown in FIG. 3, the female screw body 4 includes a bag portion 4a having a screw hole and a male screw portion 4b. The bag portion 4a is inserted into a hole formed in the thickness direction of the board substrate 2, and the male screw portion 4b. Is fixed to the support 3 of the board substrate 2 with a fastening nut 4c. The female screw body 4 is not limited to the illustrated form.
[0014]
A male screw body 5 is screwed into the screw hole of the female screw body 4 in advance. This is effective for concealing the screw holes of the female screw body 4 and preventing the entry of rainwater or dust.
[0015]
In the above case, it is effective for the head 5a of the male screw body 5 to be flush with the end face of the female screw body 4 or the surface of the board substrate so as not to change the repulsion direction of the ball. The male screw body 5 also functions as an attachment device when the adherend 6 is attached as shown in FIG.
[0016]
The embedded portion of the female screw body 4 may be anywhere on the board substrate 2. However, if the board substrate 2 is formed by connecting the board elements as described above, the corners of the board elements are concentrated as shown in FIG. P should be selected. That is, the corners of each board element can be easily secured in the embedded portion of the female screw body 4 simply by cutting them into triangles 2A ′, 2B ′, 2C ′, 2D ′ as shown in FIG. .
[0017]
In addition to the above, the embedded part of the female screw body 4 may be embedded on the connecting line where each element is connected, or on the top surface or side surface of the board substrate 1 in the upward or lateral direction. Of course, depending on the case, it may be installed on the top surface or side surface of the support 3 instead of the top surface or side surface of the board substrate 1.
[0018]
Since the ball game practice board 1 is configured as described above, a basketball goal 6a is attached to one of the female screw bodies 4 as shown in FIG. 5, or a soccer goal area is three-dimensionally shown in FIG. It is possible to set up the antenna 6b for showing or to attach the target 6c for kick practice.
[0019]
In FIG. 6, the antenna 6b and the target 6c are integrally provided with a male screw body 5 'at the base. That is, the male screw body 5 screwed in advance into the screw hole of the female screw body 4 is removed and can be screwed directly.
[0020]
【The invention's effect】
As described above, the present invention provides a ball game practice board comprising a board substrate and a support that supports the board substrate in a wall shape, and the board substrate has four connecting sides whose surface layer is made of glass fiber reinforced plastic. A plurality of board elements are connected vertically and horizontally, and the corners of the board elements are concentrated. Each corner is cut into a triangular shape, and is fixed to the support plate in a square hole formed thereby, and the outer shape becomes a square. and it has embedded the female screw member, since the threaded hole of the female screw member is characterized by being closed by the head portion of the male threaded body screwed thereto, which is supported in a wall shape on a support board The board is formed by connecting a plurality of board elements having four connecting sides vertically and horizontally, and has an advantage of being transported in a small state and assembled largely. Also, because the corners of the board element are concentrated, each corner is cut into a triangular shape, and a female screw body that is fixed to the support plate and has a square outer shape is embedded in a square hole formed thereby Since the female screw body is fixed to the support plate at the embedded position, the basketball goal, the antenna for three-dimensionally indicating the soccer goal area, or the target for kick practice is rotated firmly Install without. Furthermore, the board elements constituting the board substrate are each made of glass fiber reinforced plastic, so that they can withstand various impacts repeatedly hit by the ball and are excellent in rebound of the ball. It is effective.
[Brief description of the drawings]
FIG. 1 is a front view of a board substrate in which a female screw body is embedded.
FIG. 2 is a front view showing a state in which a female screw body is embedded in a portion where corners of a board element constituting a board substrate are concentrated.
FIG. 3 is a cross-sectional view of the board substrate in the embedded portion of the female screw body.
FIG. 4 is a cross-sectional view of a case where an adherend is attached with a male screw body screwed into a female screw body.
FIG. 5 is a side cross-sectional view of a board substrate when a basketball goal is attached using a female screw body.
FIG. 6 is a side cross-sectional view of the board substrate when an antenna for three-dimensionally showing a soccer goal area using a female screw body and a kick practice target are attached.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Application board for ball game 2 Board board 3 Support body 4 Female screw body 5 Male screw body 6 Substrate 6a Basketball goal 6b Antenna 6c Target

Claims (1)

In a ball game practice board comprising a board substrate and a support that supports the board substrate in a wall shape, the board substrate connects a plurality of board elements having four connecting sides whose surface layer is made of glass fiber reinforced plastic vertically and horizontally. The corners of the board element are concentrated, each corner is cut into a triangular shape, and a female screw body fixed to the support plate and having a square outer shape is embedded in a square hole formed thereby. A ball game practice board characterized in that a screw hole of the female screw body is closed by a head of a male screw body screwed into the screw hole .

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