JP3047458U - Table tennis table top - Google Patents

Abstract

(57) [Summary] (with correction) [Problem] Surface uniformity and strength of the top plate, light reflection characteristics of the surface,
Provided is a tabletop table for a table tennis table which is excellent in various performances such as a retaining force of a leg mounting screw and a reduction in overall weight. Kind Code: A1 A core material in which a plurality of layers, for example, seven layers of plate materials are laminated while alternately intersecting the grain of each plate material, and a core material having the same thickness as a core material arranged so as to surround a square around the core material. A medium fiberboard made of a core material made of the frame material 3 and a wood fiber bonded to the lower surface side of the core material as a main material, using the bonding properties of the fiber itself, or adding a bonding material or other chemicals ( MD
F board), a surface material 5 of a medium fiber board bonded to the upper surface side of the core material, a base coating portion 6a of ultraviolet or far infrared curing type applied on the surface material, and an enamel And a surface coating portion 6 composed of a blue finish coating portion 6b using a resin.

Description

[Detailed description of the invention] [Technical field to which the invention belongs]

 The present invention relates to an improved table top for a table tennis table.

[Prior art]

 Conventionally, a top plate for table tennis tables is made of a medium fiberboard (MDF core plywood) or particleboard core plywood, which is called a so-called special core plywood. What was used is used. Table tennis table tops using medium-quality fiberboard (MDF core plywood) are made of wood fibers as the main material, utilizing the binding properties of the fibers themselves or by adding a binder or other chemicals. It is made by using the finished MDF board as a core and bonding decorative veneer boards to the front and back surfaces. The tabletop for a table tennis table using particleboard core plywood is made of a small piece of wood as the main material, and uses a particle board, which is formed by fusing and bonding an adhesive and hot-pressed, as a core, and has a two-layer unit on the back surface. In addition to bonding the board, the front surface is made in the same way as the back surface, immediately after the undercoating, by painting or bonding paper. Further, the table tennis table top plate using a single plate is a table tennis table top plate having a predetermined size by assembling plates having a width of 20 to 30 cm. In addition, considering the conventional top plate finishing treatment for table tennis table tops, conventional methods include spraying paint with air, a flow coater method (painting while flowing paint on the surface), and coloring impregnation. Adhesion of paper is performed.

[Problems to be solved by the invention]

 However, in the case of the above-mentioned conventional tabletop tables, there are the following problems. In the case of table tennis table tops using medium-quality fiberboard (MDF core plywood), warping or distortion is likely to occur if only one MDF board is used, and the MDF board must be divided into small pieces. If used, there is a problem with the strength.In any case, it is not necessarily required in terms of the surface uniformity of the tabletop for a ping-pong table, the strength of the tabletop, the holding power of the screws for mounting the legs, and the reduction in overall weight Does not have satisfactory performance. In addition, in the case of a table tennis table top using particle board core plywood, apply two layers of veneer on the front and back sides, apply paint immediately after the base treatment, or bond paper, etc. Since it was created, it does not always have satisfactory performance in terms of the surface uniformity of the top plate, the strength of the top plate, the holding power of screws for mounting the legs, and the reduction in overall weight. Furthermore, in the case of a tabletop table using a veneer table, although a unique bounce feeling can be obtained, the individual boards having a width of 20 to 30 cm are significantly warped and cannot be used for a long time. There is. In addition, the incorporation of a stiff reinforcing material to prevent warping causes a problem that the overall weight increases and hinders usability. Next, with regard to the top plate finishing process, there is a problem with the surface uniformity in the case of spraying paint with air, and the white line on the top plate surface is blown by air. Step is caused. In addition, in the case of a top plate to which impregnated paper is bonded, there is a problem in terms of durability. Therefore, the present invention has been developed in view of the conventional circumstances as described above. The purpose of the present invention is to eliminate various inconveniences in the prior art, to achieve the required surface uniformity required for the top plate, and the top plate. An object of the present invention is to provide a tabletop table for a table tennis table excellent in various performances, such as strength, light reflection characteristics of the surface of the tabletop, holding force of screws for mounting the legs, and reduction in overall weight. Another object of the present invention is to provide a tabletop table for a table tennis table which is excellent in use performance without a step of a white line portion on the surface of the tabletop in addition to the above-mentioned performance.

[Means for Solving the Problems]

 The top plate for a table tennis table according to the invention of claim 1 is arranged such that a core material in which a plurality of layers of plate materials are laminated while alternately intersecting the grain of each plate material, and a state where the core material is surrounded in a square shape. A core material made of a frame material having the same thickness as the core material, and a wood fiber as a main material which is bonded to the lower surface side of the core material and uses the bonding property of the fiber itself or adds a binder or other chemicals Backing material consisting of a medium-density fiber board (MDF "Medium Density Fiber Board" board) formed by using a wood fiber as the main material, which is bonded to the upper surface side of the core material and uses the bonding property of the fiber itself Alternatively, a surface material consisting of a medium-density fiber board (MDF "Medium Density Fiber Board" board) formed by adding a binder or other chemicals, and an ultraviolet or far-infrared curing type applied on the surface material Base coating and finish coating using enamel resin And a surface-painted portion composed of a portion. The tabletop table for a table tennis table according to the invention of claim 2 is arranged such that a plurality of layers of plate material are stacked while alternately intersecting the grain of each plate material, and a state where the core material is surrounded in a square shape around the core material. A core material made of a frame material having the same thickness as the core material, and a wood fiber as a main material which is bonded to the lower surface side of the core material and uses the bonding property of the fiber itself or adds a binder or other chemicals Backing material consisting of a medium-density fiber board (MDF "Medium Density Fiber Board" board) formed by using a wood fiber as the main material, which is bonded to the upper surface side of the core material and uses the bonding property of the fiber itself Alternatively, it consists of a surface material consisting of a medium fiber board (MDF "Medium Density Fiber Board" board) formed by adding a binder or other chemicals, and an ultraviolet or far-infrared curing type applied on this surface material. Base coat and finish coat using enamel resin It is characterized by having a surface-painted portion composed of a mounting portion and a white line portion formed at a predetermined position on the finish-coated portion of the surface-painted portion by screen printing without any step. A table tennis table top plate according to claim 3 is a table tennis table top plate according to claim 1 or 2, in which a plurality of layers constituting a core material are cut into various shapes and sizes. The core pieces are made of a veneer plate material of appropriate thickness, and the respective core pieces are combined into a single sheet without any gap, and formed by bonding. According to the top plate for a table tennis table according to claim 1, a medium fiber board (MDF) formed by using wood fibers as a main material, utilizing the bonding properties of the fibers themselves, or adding a binder or other chemicals. The surface material made of "Medium Density Fiber Board" board has high impact resistance, and a base coat made of ultraviolet or far-infrared curable type and a finish coating formed by applying enamel resin on this surface material Since the surface coating portion is formed, the uniformity of the surface of the tabletop table top and the strength of the tabletop can be enhanced. Further, according to the table for a table tennis table, a frame member formed so as to have a cross-sectional area most suitable for the dimensions of the table for a table tennis table and defining four sides of the table for a table tennis table having a predetermined dimension, A core material composed of a plurality of layers arranged in a range surrounded by the frame material, for example, a core material having a seven-layer structure and having a first to seventh layers bonded and integrated in a state where the grain is crossed alternately. Since the table tennis table is provided, it is possible to prevent the table tennis table top plate itself from being warped or disordered for a long period of time. Furthermore, since the structure of the core material composed of the frame material and the core material described above and the surface material are made to have high impact resistance, the screws for the leg portions to be attached to the lower surface side of the tabletop table top are retained. Strength can be improved. Further, according to the table for a ping-pong table, it is not necessary to use a reinforcing material as in the conventional example, so that the weight can be reduced. According to the tabletop table for table tennis according to claim 2, in addition to the function of the tabletop table for table tennis table according to claim 1, a white line based on a predetermined standard is screened for the finish-coated portion. Since it is provided without steps due to the printing process, there is no deviation in the ball's bounds, etc. compared to the conventional example, and the uniformity of the surface of the table tennis table top plate described above in conducting table tennis competitions Together, the use performance is improved. According to the tabletop table for table tennis according to the third aspect, the same effect as the tabletop table for table tennis according to the first or second aspect can be exhibited.

[Embodiment of the invention]

 Hereinafter, an embodiment of the tabletop for a table tennis table according to the present invention will be described in detail. FIG. 1 is a partially cutaway perspective view showing a table top 1 for a table tennis table according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the table top 1 for a table tennis table. The top plate 1 for the table tennis table is formed by superimposing a core material and a surface material 5 composed of a back material 2, a frame material 3 and a core material 4 in order from the bottom, and applying a surface coating portion 6 on the surface of the surface material 5. , For example, with a thickness of 25 mm. The back surface material 2 and the front surface material 5 are made of a wood fiber as a main material, using a bonding property of the fiber itself, or a medium fiberboard (MDF) formed by adding a binder or other chemicals. Board ”board). Between the back surface member 2 and the front surface member 5, a frame member 3 constituting a core member formed so as to have a cross-sectional area most suitable for the size of the tabletop table 1 and a core member described in detail later. 4 are superposed. That is, the frame member 3 is disposed so as to define four sides of the table tennis table top plate 1 having a predetermined dimension, and a core having the same thickness as the frame member 3 is provided in a region surrounded by the frame member 3. Material 4 is arranged. The lower and upper surfaces of the frame member 3 and the core member 4 are bonded to the back surface member 2 and the front surface member 5, respectively. As shown in FIGS. 1 and 2, the core material 4 constituting the core material has a seven-layer structure including a first layer to a seventh layer 4a to 4g in order from the bottom, and a first layer to a seventh layer. 4a to 4g are bonded and integrated in a state where the grain is crossed alternately. The core material 4 constituting the core material, that is, each of the layers 4a to 4g of the seven-layer structure including the first to seventh layers 4a to 4g is made of a so-called oblique plywood of appropriately thick plywood or the like. Is cut into an appropriate shape and size, and the cut plywood material of each size is used as a core piece 4A. Each of the core pieces 4A having the appropriate shape and size is formed into a single piece without any gap. They may be combined and formed by bonding. The surface coating section 6 includes a base coating section 6a of an ultraviolet or far-infrared curable type, and a blue finish coating section 6b formed by applying an enamel resin after flat-base processing the base coating section 6a. doing. For example, the blue color of the finish-coating portion 6b indicates an obstacle to a player's eyes due to reflection of the finish-coating portion 6b due to ceiling lighting in a gymnasium or the like where a table tennis table constructed using the table tennis table top 1 is installed. And the appearance at the time of television broadcasting. In addition, a white line portion 7 based on a predetermined standard is screen-printed on the three-colored edge portion other than the side where the net of the table tennis table top 1 is stretched for the finish coating portion 6b. As a result, it is formed without a step difference with the finish coating portion 6b. As shown in FIG. 2, an attachment frame 8 for attaching the leg 9 is joined to the lower surface of the back material 2. According to the table tennis table top plate 1 of the present embodiment described above, a base coating portion 6a of an ultraviolet or far-infrared curing type is provided on a medium fiber board (MDF board) on which the surface material 5 is formed. The surface coating portion 6 includes a blue finish coating portion 6b formed by applying an enamel resin after the base coating portion 6a is subjected to a flat base treatment. Further uniformity of the surface of the table top 1 and enhancement of the table top strength can be achieved. In addition, in the present invention using the medium fiber board (MDF board) as the back surface material 2 and the surface material 5, compared with the conventional ping-pong table products, it can be provided to the market as a low-priced ping-pong table. When compared with conventional ping-pong table products that use plywood made of wig or the like as the surface material of the ping-pong table, the processing of the surface coating becomes easier. Under such a configuration of the present invention, when a medium fiber board (MDF board) is used as the back surface member 2 and the front surface member 5 of the tabletop table top, the medium fiber board (MDF board) is used. There is no inconvenience as in the case of the above-mentioned conventional case in which the base is used as a core part of a tabletop table. According to the experiment of the applicant of the present invention, it was confirmed that the surface of the table 1 for table tennis table had uniformity enough to withstand a ball bouncing at 10,000 km / min at a speed of 200 km / h. . In addition, according to the table 1 for table tennis, the cross section is formed so as to be most suitable for the dimensions of the table 1 for table tennis, and the frame defining four sides of the table 1 for table tennis having predetermined dimensions. A core material 4 having a seven-layer structure arranged in a range surrounded by the frame material 3 and having the first to seventh layers 4a to 4g adhered and integrated in a state where the grain is crossed alternately. Therefore, the table tennis table top 1 itself can be prevented from being warped or disturbed for a long period of time. Further, the structure of the frame member 3 and the core member 4 described above, and the lowermost lower plate 2a of the back surface member 2 is formed of a plate material having a high impact resistance, so that the back surface member 2 and the lower portion thereof are formed. The mounting frame 8 arranged on the side is firmly joined, whereby the holding force of the screws for mounting the leg 9 can be improved. Further, since the white line portion 7 based on a predetermined standard is provided on the finish coating portion 6b without any step by the screen printing process, the bounce of the ball may be deviated as compared with the conventional example. In addition, the use performance is improved in combination with the uniformity of the surface of the table 1 for the table tennis table, which has been described above, in performing the table tennis game. Furthermore, according to the table 1 for a ping-pong table, it is not necessary to use a reinforcing material as in the conventional example, so that the weight can be reduced.

[Effect of the invention]

 According to the present invention described in detail above, the following effects can be obtained. According to the invention described in claim 1, it is possible to further enhance the uniformity of the top plate surface and to enhance the strength of the top plate, and to prevent the table tennis table top plate itself from warping or distortion for a long period of time. To provide a novel top plate for a table tennis table, which can improve the holding force of the screws for the leg attached to the lower surface side and can further reduce the weight. Can be. According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the use performance is improved without causing the ball to be out of order by providing the white line portion by the screen printing process. It is possible to provide a tabletop for a table tennis table. According to the third aspect of the present invention, it is possible to provide a table tennis table top plate having the same effect as the first or second aspect of the present invention.

[Brief description of the drawings]

FIG. 1 is a cutaway perspective view showing a tabletop for a table tennis table according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view showing a tabletop for a table tennis table according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Top plate for table tennis table 2 Back surface material 3 Frame material 4 Core material 4A Core piece 5 Surface material 6 Surface coating part 6a Base coating part 6b Finish coating part 7 White line part 8 Mounting frame 9 Leg part

Claims (3)

[Utility model registration claims] 1. A core material in which a plurality of layers of plate materials are stacked while alternately intersecting the grain of each plate material, and a frame material having the same thickness as the core material arranged in a state surrounding the core material in a square shape. And a medium fiber board (MDF) bonded to the lower surface side of the core material and formed using wood fibers as a main material, utilizing the bonding properties of the fibers themselves, or adding a binder or other chemicals. "Medium Den
sity Fiber Board ”board) and the upper surface side of the core material is formed by using wood fibers as a main material and utilizing the bonding properties of the fibers themselves or by adding a binder or other chemicals. Medium fiberboard (MDF "Medium Density F
iber Board), a surface coating part consisting of a base coating part of UV or far-infrared curing type applied on this surface material and a finish coating part using enamel resin. Table tennis table top. 2. A core material obtained by laminating a plurality of layers of plate materials while alternately intersecting the grain of each plate material, and a frame material having the same thickness as the core material arranged so as to surround the core material in a square shape. And a medium fiber board (MDF) bonded to the lower surface side of the core material and formed using wood fibers as a main material, utilizing the bonding properties of the fibers themselves, or adding a binder or other chemicals. "Medium Den
sity Fiber Board ”board) and the upper surface side of the core material is formed by using wood fibers as a main material and utilizing the bonding properties of the fibers themselves or by adding a binder or other chemicals. Medium fiberboard (MDF "Medium Density F
iber Board), a surface coating part consisting of a base coating part of UV or far-infrared curing type applied on this surface material and a finish coating part using enamel resin, and this surface coating part And a white line portion formed at a predetermined position on the finish coating portion by a screen printing process without any step. 3. A plurality of layers constituting the core material are made of plywood pieces of various shapes and sizes and cut into various thicknesses as core pieces, and the respective core pieces are formed into a single sheet without gaps. The tabletop table for a table tennis table according to claim 1, wherein the tabletop is formed by combining and bonding.