JPS5912947Y2 - Mahjong table top structure - Google Patents

Description

[Detailed description of the invention] This invention discloses an extremely innovative and effective top plate structure in which a frame made of acrylic resin is assembled over the entire surface of the top plate of a mahjong table. It is related.

One of the anticipated main objectives of the present invention is that by utilizing an integrally formed acrylic frame in the structure of the top plate, the strength characteristics of the top plate are significantly improved and the strength of the top plate is significantly improved. This is intended to accurately prevent loosening of the top plate assembly.

Next, one of the other main objectives anticipated in the present invention is that the nose surface of the peripheral flange constituting the top plate is made into an integrally molded acrylic resin frame, thereby eliminating any seams in the peripheral flange. This is intended to improve the external appearance and to avoid any danger of catching or other dangers during use.

Furthermore, one of the other main objectives anticipated in the present invention is to omit the stop-cutting process and the matching process as much as possible, thereby minimizing the manufacturing labor and special technology to the necessary minimum, thereby significantly reducing the manufacturing cost. The purpose of this is to make it possible to effectively expect the following.

The various other objectives anticipated in the present invention will be made clear in the following explanations.
In order to achieve appropriate and purposeful effects on these characteristics, the present invention has a frame made of acrylic resin whose upper surface is recessed and a circumferential recessed groove is recessed on the outer circumferential side of the lower surface. , an edge frame member that is fitted into and adhered to the circumferential groove on the lower surface of the frame so as to fill the groove, and a thin wall member that is interposed and fixed in the structural gap of the frame member and is adhered to the bottom surface of the frame. The present invention is a combination of plywood, a rubber base, and a thick plywood that is covered with a rashy base and is removably inserted into the recessed part of the upper surface of the frame. Other significant design changes in line with the basic design were also planned at the same time.

The details of the present invention will be described below with reference to a typical embodiment shown in the drawings. Reference numeral 1 denotes a frame made of acrylic resin, which has the shape, dimensions, and wall thickness of a typical mahjong table top and is hot-pressed. It is something that has been shaped into something.

The frame 1 is in the shape of a regular square truncated pyramid with an appropriate concave 1a on its upper surface, and the frame 1 is inclined and has a tapered edge 1b longer than the concave 1a. Moreover, a gap 1C is arranged in the shape of a circumferential groove between the tapered edge 1b and the recess 1a.

Attach 2 to the inner bottom surface of the gap 1C for the frame 1.
A frame member 4 with another frame member 3 perpendicular thereto is fitted on the other side end face of the column to constitute a substantially regular square edge frame member, and the frame member of this edge frame member. 3 A plywood 5, which is to serve as a relatively thin backing plate, is pasted 2 or sealed 6 on the top surface.

The length of this frame material 4 is the sum of the thickness of the plywood 5 and the length from the inner bottom surface of the gap 1C of the frame 1 to the bottom back surface of the recess 1a. The thickness is such that it extends from the edge of the material 4 to the edge of the frame tapered edge 1b.

For such a basic structure of the top plate, a thick plywood 9 which has been contracted and colored so that the rubber 7 and the rashers 8 are laminated on its upper surface is prepared separately, and is placed inside the recess 1a of the frame 1. It is designed to be fitted in a removable manner.

The present invention has a unique structure, in particular, the integrally molded acrylic resin frame 1 that covers the entire surface of the top plate is hot-pressed, thereby achieving specific effects on the above-mentioned characteristics. This is what we expected.

In other words, conventional mahjong table tops of this type were generally constructed separately by forming an acrylic board into a μ-shape, cutting it to the required length, and cutting the corners with stops. This acrylic plate is attached to a mahjong table for the sole purpose of decoration or to cover the edge of the frame and to provide a good hit for the pie. It is.

However, in the present invention, first, acrylic flat plates are made into standard sizes and mass-produced by hot pressing, and frame materials 3, 4 and plywood 5 are sequentially assembled based on this standard mass-produced frame 1. By doing so, all technical difficulties associated with manufacturing the top plate are removed, and the top plate portion can be easily and quickly produced and installed.

Also, by integrally molding the basic frame 1, the strength of the top plate, especially the assembly strength, is significantly improved, and its tensile strength is also effectively improved, and the top plate edge flange By eliminating any joint structure in the joint, it is possible to effectively eliminate the loss of aesthetic appearance due to accidents caused by the joint being caught or staining of the joint.

As stated above, the present invention relates to the disclosure of a vertical top plate structure for a mahjong wheel that has a simple structure and can be provided at a low manufacturing cost.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of parts showing a typical embodiment of the present invention, and FIG. 2 is a sectional view of essential parts. In addition, in the figure 1... Frame, 2... Adhesion, 3-4... Frame material, 5... Plywood, 6...
...Sealing, 7...Rubber, 8...
- Rasha, 9... This shows plywood.

Claims (1)

[Scope of utility model registration request] A frame 1 made of acrylic resin is provided, the upper surface of which is recessed 1a, and a circumferential recessed groove 1C is recessed on the outer peripheral side of the lower surface. Frame material 4 affixed to the inner bottom surface of the circumferential groove 1C on the lower surface
The frame material 3 is pasted so as to be perpendicular to the frame material and to form a roughly T-shape.
is attached and sealed to the end face of the frame 1 so that it is flush with the tip of the frame 1, and the recessed part 1a on the upper surface of the frame 1 is attached and sealed.
This top plate structure for mahjong is characterized in that a thick plywood board 9 having a rubber base 7 covered with a rubber base 7 is attached in a detachable manner.