Portable Tennis Score Counter

Abstract

To provide a portable tennis score counter which can be attached to a wristband and instantly and easily operated when a tennis match is self-judged, prevents mistakes in game and set counts, and is easy to read even for a person with poor eyesight. [Solution] Boards 1-d that swing around at least four fulcrums 1-c are arranged side by side, and display bodies that show points and boards that swing around at least six fulcrums are arranged side by side, and display bodies that show game points are arranged in two of each color, and the display bodies are engaged at the end point of the swing so that they will not come off unless force is applied by hand.

Description

[Technical field]

[0001] This invention is a wristband that records the time of a game so that the player does not forget or make mistakes during the game when self-judging a tennis match. To provide a portable tennis score counter equipped with a tennis counter capable of displaying the count and set count. [Background technology]

[0002] Traditionally, when a tennis match is self-judged, the server counts the game and set in a voice loud enough for the opponent to hear. However, as players get older or the match becomes more evenly matched, they can forget to count or make mistakes, which can lead to arguments or take a long time to count correctly. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] An example of this type of prior art is JP 59-149164 A, but the count is displayed in numbers, and since the device is attached to the wrist and does not interfere with tennis play, the numbers cannot be made very large, making it unsuitable for people with poor eyesight or elderly people who are becoming visually impaired. [Non-patent literature]

[0004] [Non-Patent Document 1] One option would be to place a small whiteboard on a bench next to the tennis court and write down the counts, but this is tedious and time-consuming. Summary of the Invention [Problem to be solved by the invention]

[0005] To provide a portable tennis score counter which prevents mistakes and forgetting of game and set counts and is easy to read even for a person with weak eyesight by attaching the portable tennis score counter to a wristband on the wrist and operating it instantly and easily when a tennis match is self-judged. [Means for solving the problem]

[0006] In order to solve the above problems, this invention provides a portable tennis score counter that has at least four swinging plates arranged side by side, two display units each showing points and two display units showing game points arranged side by side, each of which is color-coded, and the display units are fastened to the end of the swing so that they will not come off unless force is applied by hand. Effect of the Invention

[0007] By carrying the portable tennis score counter of this invention, you can instantly display tennis points and game points, so you will not forget or make mistakes and can smoothly proceed with self-judging a match. [Brief description of the drawings]

[0008] [Figure 1] Front view of the embodiment of the present invention [Diagram 2] Side view of Figure 1 [Diagram 3] AA line cross section [Figure 4] An example of the mass production base of this invention [Diagram 5] An example of the lid for mass production of this invention [Figure 6] An example of a mass-produced swing board of this invention [Figure 7] Side view of Figure 6 [Figure 8] A combination diagram of a swing plate, a support bearing, and a receiving plate, showing an example of mass production of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] A portable tennis score counter is formed by arranging at least four swinging boards around at least six fulcrums side by side, and arranging two display bodies each showing points and two display bodies showing game points in different colors, and the display bodies are engaged at the end of the swing so that they will not come off unless a force is applied by hand. EXAMPLES

[0010] The first embodiment will be described. The swing plate, support plate, and frame plate were made by processing plates that were 10 mm wide, 2 mm thick, and 900 mm long. The swing board was cut to a length of 10 mm, and a φ5.5 mm hole was drilled at the center 7 mm from the top, into which a neodymium magnet with a diameter of φ5.5 mm and a thickness of 2.5 mm was glued. An aluminum tube with an outer diameter of 3 mm and an inner diameter of 2 mm was cut to 9 mm and glued to the bottom as a support shaft. The top of the swing board was colored orange and green with an oil-based pen so that the points of the player and the opponent player could be easily identified. The support plate was glued at an angle so that the contact area with the neodymium magnet would be maximized when the swing board moved to the end point. A partition plate was placed between the swing boards to allow the swing board to move smoothly. A magnetic sheet was attached to the support plate side at the position where the neodymium magnet of the swing board comes into contact, so that the swing board can be firmly attached. A metal plate that can be attached to a magnet can be attached instead of a magnetic sheet. A piano wire with a diameter of φ0.5 mm was passed through the aluminum tube that serves as the support shaft of the swing board to make it the support shaft. The swing boards were made in two rows of four and two rows of six. The first row of four was for the player's points and the second row was for the opponent's points. In both cases, the swing board was lowered down at first and placed down, and when a point was earned, it was moved up from the left side in order. The points were 15, 30, 40, and juice in order. The third row of six swing boards was for the player's game points, and the fourth row of six swing boards was for the opponent's game points. In both cases, the swing board was lowered down at first and placed down, and when a point was earned, it was moved up from the left side in order. The points were 1, 2, 3, 4, 5, and 6 in order. The number of swing boards was kept to a minimum because they were attached to the wrist. After gluing the frame boards, they were fixed to the wristband with thread so that they would not interfere with the movement of the swing boards. The board was worn on the wrist with two rows of four at the tip so that points could be entered from the inside of the left wrist, and it was confirmed in an actual tennis practice match. It was confirmed that the operation was easy and that the points did not move on their own during the match. A hook-and-loop fastener can be used instead of a magnet. As an example of mass production, the base shown in Fig. 4 is made of resin by extrusion molding or injection molding, and the cover with the partition plate shown in Fig. 5 is attached to the base shown in Fig. 4. After that, the color-coded swing plate shown in Fig. 6 is inserted into the support shaft to complete the tennis score counter part, and then the portable tennis score counter can be completed by fixing it to a wristband. [Industrial Applicability]

[0011] This invention is intended to be widely used as a new product that prevents players from forgetting game scores or points during a self-judged tennis match, or from counting incorrectly, thereby eliminating the waste of time and disputes involved in resolving the issues. [Explanation of symbols]

[0012] 1 How to install a portable tennis score counter on a wristband 1-a Wristband 1-b Frame 1-c spindle 1-d Swing board 1-d-1 magnet 1-e Magnetic sheet 1-f Receiving plate 2 Mass production base 2-1 Mass-produced bearings 2-2 Mass production support plate 2-3 Mass-produced magnet holder 3 Mass-produced lid 4 Mass-produced swing board 4-1 Mass-produced magnets

Claims

[Claim 1] A portable tennis score counter is characterized in that a board that swings around at least four fulcrums is arranged in a row, a display body that indicates points and a board that swings around at least six fulcrums are arranged in a row, and a display body that indicates game points are arranged in a row, each of which is color-coded, and the display body is engaged at the end of the swing so that it will not come off unless force is applied by hand.

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