JP3038035U - Table tennis table top - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To provide surface uniformity required for a top plate, strength of the top plate, light reflection characteristics of the top plate, holding power of screws for attaching legs, and overall weight. Provide a table tennis table top plate excellent in various performances such as weight reduction. SOLUTION: A core material 4 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 the core material 4 arranged in a state of surrounding the core material 4 in a square shape.
A core material made of a frame material 3 having the same thickness as the above, a back surface material 2 having a three-layer structure joined to the lower surface side of the core material to increase the impact strength of the outermost layer, and an upper surface side of the core material. A surface material 5 having a three-layer structure to increase the impact strength of the outermost layer, an ultraviolet or far-infrared curing type undercoating portion 6a applied on the surface material 5, and a blue finish coating portion using an enamel resin. It has a surface coating part 6 made of 6b.

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, table tops for table tennis tables are those that use MDF core plywoods or particle board core plywoods, which are so-called core material special plywoods, and also those that use single plates. There is. The tabletop tabletop using MDF core plywood is made of wood fibers as the main material, and uses the binding properties of the fibers themselves or the core of the MDF board formed by adding a binder or other chemicals. It is made by adhering a decorative veneer board 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 device]

 However, in the case of the above-mentioned conventional tabletop tables, there are the following problems. In the case of a table tennis table top plate using MDF core plywood, warping and deviation easily occur when using one MDF board, and when using the MDF board in small pieces, strength problems occur. In any case, it does not necessarily have satisfactory performance in terms of surface uniformity as a table tennis table top, strength of the table top, holding power of screws for attaching legs, and reduction in overall weight. 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. Further, the top plate to which water-containing paper is adhered has a problem in 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 tabletop tabletop according to the invention of claim 1 is arranged such that a plurality of layers of plate materials are laminated while intersecting the grain of each plate material, and the core material is surrounded by a square shape. The core material made of a frame material having the same thickness as that of the core material, the back surface material formed by increasing the impact strength of the outermost layer with a multi-layer structure joined to the lower surface side of the core material, and the upper surface side of the core material. It consists of a surface material that has a multi-layer structure that is joined to increase the impact strength of the outermost layer, a UV or far-infrared curing type base coating part that is coated on the surface material, and a finish coating part that uses enamel resin. And a surface coating portion. A table tennis table top according to a second aspect of the present invention is arranged such that a plurality of layers of plate material are laminated while intersecting the grain of each plate material, and the core material is surrounded by a quadrangular shape. The core material made of a frame material having the same thickness as the core material, the back surface material having a three-layer structure joined to the lower surface side of the core material to increase the impact strength of the outermost layer, and the upper surface side of the core material. It consists of a surface material with a three-layer structure that is bonded to increase the impact strength of the outermost layer, a UV or far-infrared curing type base coating and a finish coating using enamel resin. It is characterized in that it has a surface coating portion and a white line portion formed at a predetermined position on the finish coating portion of the surface coating portion by a screen printing process without steps. 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 table tennis table top of claim 1, the outermost layer of the surface material having a plurality of layers, for example, a three-layer structure, has a high impact resistance, and an ultraviolet ray or far infrared ray curable type is formed on the outermost layer. Since a surface coating section consisting of a base coating section and a finish coating section formed by applying enamel resin is provided, it is possible to enhance the uniformity of the surface and the strength of the tabletop tabletop tabletop. it can. 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. Further, since the structure of the core material including the frame material and the core material described above and the outermost layer of the back surface material having a plurality of layers, for example, a three-layer structure have high impact resistance, this table tennis tabletop is used. It is possible to improve the holding force of the screws for the legs attached to the lower surface side of the plate. 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 each have a three-layer structure. That is, the back surface material 2 has a three-layer structure of a lower plate 2a, a middle plate 2b, and an upper plate 2c in order from the lower side. The surface material 5 has a three-layer structure including a lower plate 5a, a middle plate 5b, and a decorative plate 5c in order from the bottom. The lowermost lower plate 2a of the back surface material 2 and the uppermost decorative plate 5c of the front surface material 5 are formed of a plate material having a high impact resistance. 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 arranged so as to define four sides of the table tennis table top 1 having a predetermined size, and a core surrounded by the frame member 3 has the same thickness as 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 tabletop 1 of the present embodiment described above, the uppermost decorative plate 5c of the surface material 5 is formed of a plate material having a high impact resistance, and on the decorative plate 5c, A surface coating section 6 is provided, which includes an undercoating section 6a of ultraviolet or far infrared curing type, and a blue finishing coating section 6b formed by applying a flat base treatment to the undercoating section 6a and then applying an enamel resin. Therefore, the uniformity of the surface of the tabletop tabletop 1 and the strength of the tabletop can be enhanced. 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. In addition, since the white line portion 7 based on a predetermined standard is provided on the finish coating portion 6b without a step by the screen printing process, deviation of the sphere of the ball may occur when compared with the conventional example. Nonetheless, the use performance is further improved in combination with the uniformity of the surface of the tabletop tabletop 1 which has already been described in the table tennis competition. 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 as set forth in claim 1, it is possible to increase the uniformity of the surface of the tabletop and increase the strength of the tabletop, and to prevent the tabletop tabletop itself from being warped or deformed over a long period of time. Therefore, it is possible to improve the holding power of the screws for the legs attached to the lower surface side, and it is also possible to provide a new table tennis table top plate that is also lightweight. 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 laminated while alternately intersecting the grain of each plate material, and a frame material having the same thickness as the core material arranged around the core material in a rectangular shape. A core material consisting of a back surface material having a multi-layer structure bonded to the lower surface side of the core material to increase the impact strength of the outermost layer, and a multi-layer structure bonded to the upper surface side of the core material, the impact strength of the outermost layer Table tennis characterized by having a surface material formed by increasing the surface of the surface material, and a surface coating portion composed of an ultraviolet or far infrared curing type base coating portion and a finish coating portion using an enamel resin, which are coated on the surface material. Top plate for the table. 2. 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 frame material having the same thickness as the core material arranged so as to surround the core material in a square shape. A backing material having a three-layer structure joined to the lower surface side of the core material to increase the impact strength of the outermost layer, and a three-layer structure joined to the upper surface side of the core material, the impact strength of the outermost layer Surface coating, a surface coating part consisting of a UV or far-infrared curing type base coating part and a finish coating part using enamel resin, and a finish coating of this surface coating part A top plate for a table tennis table, which has a white line portion formed by screen printing at a predetermined position on the portion 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.