Billiards practice equipment

Abstract

To provide a training tool by which a player can inexpensively and efficiently learn how to judge the thickness of a billiard and how to "release" a cue ball, which are considered difficult in billiards. [Solution] The billiards practice device is composed of three plates: plate 9, on which target ball 3 rests, and on which an imaginary ball adjacent to the target ball and an imaginary point are clearly marked, located on pocket line 10; plate 14, on which cue ball 4 rests and on a straight line along cue ball line 15, and on which the imaginary ball and imaginary point are clearly marked; and plate 12, on which the cue ball separates and runs after hitting the target ball. The three plates overlap, slide, and rotate with the imaginary point as a common fulcrum, and no matter where they are relative to each other, the positional relationship between the target ball and the imaginary ball remains unchanged, as they are adjacent to each other on the pocket line, and the imaginary ball is on the same straight line as the cue ball, and its thickness is clearly indicated numerically.

Description

[Technical Field]

[0001] This invention relates to a training tool that allows people to learn billiards techniques inexpensively and efficiently, and that will help popularize the sport and increase the number of players. [Background technology]

[0002] The basic skills required in billiards are to accurately determine the target point based on the thickness (overlap) of the cue ball and target ball, to accurately hit the cue ball at that target point with the cue, and to further acquire the skill to carry (release) the cue ball to the desired location.

[0003] For this reason, players begin by learning how to hold the cue, and then the necessary basic elements such as body position and arm movement. They then practice striking the center of cue ball 4 with the cue in a straight line (a true strike) and then hitting the center of target ball 3 with the cue in a full strike. This practice is also called a stop shot, in which the struck target ball 3 goes into the pocket, and the struck cue ball 4 stops at the point where it hits target ball 3; it is a true strike and full strike shot practice. This is something that can be mastered through repeated practice with patience. (See Figure 1-1)

[0004] The next step is to place target ball 3 on pocket line 2, the direction the target ball will be placed, and place cue ball 4 at a position off-line to practice full thickness and different thicknesses. To achieve this, imagine an imaginary ball called image ball 5 (see Figure 1-2, where the dashed line represents the circumference of the image ball) at a position adjacent to target ball 3 on the line. This method is considered a powerful technique for accurately determining the target point based on thickness in billiards and is considered a required skill for billiards players. The center of image ball 5 (imaginary point 6, hereafter abbreviated as IP) is the target point. If cue ball 4 is struck accurately at this point, target ball 3 will physically move along pocket line 2 and enter the pocket. After hitting the target ball, the cue ball also physically separates at a 90-degree angle 4' from the target ball, allowing the cue ball to be moved to a position that makes it easier to aim for the next target ball (called a "put-out"). In reality, the separation angle varies depending on the cue ball's rotation at the time of impact. (See Figure 1-2) Summary of the Invention [Problem to be solved by the invention]

[0005] There are various ways to practice the image ball technique, which is considered an essential skill for billiard players. However, the general practice is to actually place another ball in that position to act as an image ball. In this case, after recognizing the IP, which is the center of the other balls that are likened to the image ball, If you can remove the other balls that are in the way and hit the ball accurately, aiming for the IP, you can pocket the ball. However, placing another ball after each hit is time-consuming and inefficient for regular practice. stomach.

[0006] One such training tool is a thin sheet-like device that can be placed under the target ball to visualize the image ball and IP. Using this tool, the player can see the position of the image ball, its quantified thickness, and the IP, so if the player can hit the cue ball accurately into the IP, they can pocket it. (See non-patent document JP 2001-276296)

[0007] However, with this method, the training device placed under the target ball moves as the cue ball passes, so the training device needs to be set up after each hit, which is time-inefficient when repeatedly practicing by placing the target ball and cue ball in various locations on the table. Furthermore, when the target ball is far from the pocket and the cue ball, it takes time to set up the training device, and in many cases it is difficult to determine whether a failure to pocket the ball is due to an incorrect IP or to the way the ball was struck.

[0008] In the practice of acquiring the basic skills described above, the present invention aims to provide an effective training tool that allows for inexpensive and efficient learning of image ball practice at thicknesses other than the full thickness, and also makes it easy to recognize the direction in which the cue ball separates. [Means for solving the problem]

[0009] (Figure 1-3) The center of the target hole 11 and the imaginary point 6 (hereinafter referred to as IP) The distance a is set to the diameter of the ball, and the target ball and the image ball are always adjacent to each other, forming a pocket line. A plate called pocket line plate 9 on (printing line) 10 was produced.

[0010] This will be explained using Figure 1-4. A cue ball separation line board 12 was produced, which is shorter in overall length than the pocket line board 9 described above.

[0011] (Figure 1-5) The image ball has two outer periphery circles 5 (the center is IP) and two cue ball holes 16. A board called a cue ball line board 14 was produced, which was perforated along the cue ball line (printed line) 15.

[0012] The pocket line board 9, the cue ball separation line board 12, and the cue ball line board 14 are all designed to give the impression of the ball running. To make it easier to mount, the plate was made of an extremely thin (approximately 0.15 mm) strong resin plate with a width a equal to the diameter of the sphere and a length equivalent to that of the sphere.

[0013] The assembled device will be explained using a diagram (Figure 2-1). The cue ball line board 14, pocket line board 9, and cue ball separation line board 12 are stacked on top of each other, with the cue ball line board 14 at the top, and they slide and rotate around the IP, the center of the image ball outer circle 5, as a common fulcrum. This ensures that when the target ball is actually placed in the target ball hole 11, the target ball and the image ball will always be adjacent and on the pocket line (printed line) 10, regardless of the relative positions of the line boards. Additionally, there are two IPs, the center of the image ball outer circle 5, and two cue ball holes 16 on the cue ball line (printed line) 15. The cue ball separation line board 12 is set at a 90-degree angle, which is the separation angle when the cue ball hits the target ball without any rotation.

[0014] (Figure 2-3) shows the actual placement of the target ball 3 and cue ball 4. The image ball outer circle 5 on the cue ball line board 14 has the same diameter as the ball and is always adjacent to the target ball 3 on the pocket line (printed line) 10. There are two cue ball holes 16, one near the IP and one far from it, which can be used depending on the player's level, etc.

[0015] Figure 2-4 is an enlarged view of Figure 2-3. A numerical value indicating the thickness is clearly written on the circumference of the image ball outer circle 5, and the thickness is the point where the pocket line (printed line) 10 intersects with the image ball outer circle 5. Figure 2-4 clearly shows 50%. The cue ball separation line board 12 is located below the pocket line board 9.

[0016] Players should not just look at the IP and hit the cue ball immediately, but should take into account the clearly indicated thickness, the angle and distance between the target ball and the cue ball, its position relative to the pocket, and the scenery (or the rails) into their brains, and then hit the cue ball with the image of the target ball running along the pocket line and landing in the pocket. At the same time, players should imagine the cue ball running in the direction of the cue ball separation line 12 in order to "release" the cue ball, and be aware of preventing scratch fouls. [Effects of the Invention]

[0017] + The appeal of billiards is that you can pocket the target balls placed in various locations on the table as you wish, and The process of controlling the ball and pocketing it one after another requires intellectual elements and moderate exercise. It is in the process of taking that first step that you will inevitably encounter, and the determination and "putting out" of the depth. There are quite a few players who are unable to overcome the obstacles and give up, and end up quitting billiards. This device is designed to help you overcome this barrier by efficiently learning the techniques of image balls and "dashi" (exiting). It is designed to be able to visually check the image ball and IP marked on the device, and at the same time By predicting the cue ball's movement, you can make the (said to be) difficult image ball and "put out" familiar. It can also feel like...

[0018] This tool's overlapping cue ball line board 14, pocket line board 9, and cue ball separation line board 12 are all sufficiently long, and their width is the same as the diameter of the ball, making it easy to visualize the ball running across the board. Furthermore, because the board does not easily move as the ball passes over it, you can repeatedly practice your weaker ball placements, and even when practicing with different placements, you can practice in a time-efficient manner. You can also practice the same technique without the tool, changing the location and placement on the table. Through this process, you will be able to determine the IP and strike the cue ball accurately even without the tool.

[0019] A straight line leading to the IP is marked on the cue ball line plate 14 of this device, and the cue ball is placed along this straight line. Putting out the cue ball and hitting it on the IP is also a good way to practice hitting the ball straight and hitting it full thickness. Whether or not you were able to hit the ball accurately can be judged by whether or not the ball goes into the pocket. (However, strictly speaking, this excludes factors such as extremely weak strikes and twists.)

[0020] By using this device, even if the IP is clearly marked and visible, if you can hit the cue ball accurately at that point, it will go into the pocket, making practice more interesting and motivating beginners in particular to continue and improve their skills. [Brief explanation of the drawings]

[0021] [Figure 1] (Figure 1-1) shows a shot practice using a straight shot and full thickness. (Figure 1-2) shows a shot practice using a general image ball.

[0022] (Figure 1-3) is a diagram of the pocket line plate 9 in an unassembled state. A target ball hole 11 is drilled on the in (printed line) 10, and the center of the image ball IP 6 is clearly printed. The distance a between the target ball hole 11 and IP 6 is set to the same length as the diameter of the ball, and the width of the pocket line board 9 is also set to the same length a as the diameter of the ball to make it easier to imagine the target ball running along the pocket line.

[0023] Figure 1-4 shows the unassembled cue ball separation board 12. This board 12 is a shortened version of the pocket line board 9, and serves as the line along which the separated cue ball runs. However, it can also be used as a pocket line when the target ball is in front of the hole (close to the pocket). In this case, the original pocket line board 9 serves as the cue ball separation board 12.

[0024] (Figure 1-5) shows the cue ball line board 14 in an unassembled state. The cue ball line (printed line) 15 and the image ball outer circle 5 (centered at IP) are clearly printed on it. Two cue ball holes 16 are drilled on the cue ball line (printed line) 15, and the spacing b between them is set to the same distance as one point on a rail (approximately 317 mm). The width of the cue ball line board 14 is set to a length a, the same as the diameter of the cue ball, to make it easier to imagine the cue ball running along the line.

[0025] [Figure 2] (Figure 2-1) shows the completed device. Pocket line board 9 is layered below cue ball line board 14, and cue ball separation line board 12 is layered below that. These three line boards slide and rotate with IP, the center of image ball outer circle 5, as a common fulcrum. With this configuration, when the target ball and image ball are actually placed, the target ball and image ball will always be adjacent and on pocket line (printed line) 10, regardless of the relative positions of the boards, and the IP, the center of the image ball, and the cue ball will be on cue ball line (printed line) 15.

[0026] (Figure 2-2) is a cross-sectional view (right side) to make it easier to understand the structure of this device, in which the cue ball line board 14, pocket line board 9, and cue ball separator line board 12 overlap, slide, and rotate with the IP (the center position of axis 17 in this diagram) as a common fulcrum. Axis 17 of the upper cue ball line board 14 passes through axis hole 18 of the lower pocket line board 9 and axis hole 19 of the cue ball separator line board 12, and is glued and fixed in place by sandwiching the pocket line board 9 and cue ball separator line board 12 between pressure plate 20. (The drawing is exaggerated because both boards are made of extremely thin resin plates about 0.15 mm thick.)

[0027] Figure 2-3 shows the target ball 3 placed in the target ball hole on the pocket line board 9 facing the pocket, and the cue ball 4 placed on the cue ball line board 14. The player can pocket the cue ball by accurately hitting the cue ball 4 on the IP while visually checking the imaginary ball outer circle 5 and its center IP on the cue ball line (printed line) 15.

[0028] (Figure 2-4) is a partial enlargement of the target ball 3 and the image ball outer circle 5 in the previous figure (Figure 2-3). The thickness (in % scale) is printed on the outer circle 5 of the target ball, and the thickness is clearly indicated at the point where it intersects with the pocket line (printed line) 10 (50% in the figure). In this diagram (plan view), the printed pocket line (printed line) 10 appears to be hidden under the target ball 3, but in reality, since the target ball 3 is a sphere, it can be seen from the cue ball side. Only the width of the cue ball separation line board 12 on the bottom layer is visible. [Explanation of symbols]

[0029] 1 pocket 2 Pocket Line 3 target ball 4 cue ball 4´ Separated cue ball 5. Image ball outer circle (center is Imaginary Frent IP) 6 Imaginary Point (IP) 7 Rail 8 tables 9 Pocket Line Board 10 Pocket line (printing line) 11 Target ball hole 12 Cue ball separation line board 13. Cue ball separation line printing 14 Cue ball line board 15 Cue ball lines (printed lines) 16 Cue ball holes (2 places) 17 axes 18. Pocket line plate 9 shaft hole 19. Cue ball separation line board 12 shaft hole 20 Shaft holder plate a Pocket line board width = Cue ball separation line board width = Cue ball line board width = Ball diameter b. Imaginary point IP and cue hole distance (approx. 317 mm) [Prior art documents] [Non-patent literature]

[0030] (Non)Patent Document 1: JP 2019-013366

[0031] (Non)Patent Document 2: JP 2001-276296

[0032] Utility model registered by the applicant: Registration number 3249665

Claims

1. The billiards training device is composed of a combination of three boards: a board on which an image ball adjacent to the target ball and an imaginary point are clearly marked on the pocket line on which the target ball is placed; a board on which the cue ball is placed and on which the image ball and the imaginary point are clearly marked on a straight line from the cue ball; and a line board along which the cue ball separates and runs after hitting the target ball.

2. The three plates of claim 1 overlap, slide, and rotate with each imaginary point as a common fulcrum, and no matter where the three plates are in relation to each other, the positional relationship between the target ball and the image ball remains unchanged, with the image ball adjacent to the pocket line, and the image ball is on the same straight line as the cue ball, and its thickness is clearly indicated by a numerical value.

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