Billiards Practice Equipment

Abstract

To provide a training tool by which a person can inexpensively and efficiently learn how to judge billiard thickness, which is considered difficult in billiards. [Solution] It is configured by combining two boards: board 9 on which target ball 3 rests, with an imaginary ball adjacent to the target ball and an imaginary point clearly indicated, and board 12 on which cue ball 4 rests, with an imaginary ball and an imaginary point clearly indicated, in a straight line along cue ball line 13. The two boards overlap, sliding and rotating 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 by a numerical value.

Description

[Technical field]

[0001] This invention relates to a training tool that allows a player to learn billiard techniques inexpensively and efficiently, and that is intended to popularize the sport and increase the number of players. [Background technology]

[0002] The basic skills required in billiards are the ability to accurately determine the target point based on the thickness (overlap) of the cue ball and the target ball, and the ability to accurately strike the cue ball at the target point with the cue. It is said that by mastering these two basic skills, one can acquire more advanced applied techniques and new techniques.

[0003] For this reason, players begin by learning how to hold the cue, body position, arm movement, and other necessary basic elements, and then practice striking the center of the cue ball 4 with the cue in a straight line (a true strike) and then hitting the center of the target ball 3 (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 the target ball 3; it is a true strike and full strike shot practice. This is something that can be mastered through patient, repeated practice. (See Figure 1-1)

[0004] In the next stage, the target ball 3 is placed on the pocket line 2, which is the direction in which the target ball is to be placed, and the cue ball 4 is placed at a different position from the line, to practice different thicknesses from the full thickness. For this purpose, an imaginary ball called an imaginary ball 5 (see Fig. 1-2, the outer circumference of the imaginary ball is shown by a broken line) is imagined at a position on the line in contact with the target ball 3. This method is considered to be an effective technique for accurately grasping the target point from the thickness in billiards, and is also considered a required technique for billiard players. The center of the imaginary ball 5 (imaginary point 6, hereafter abbreviated as IP) is the target point, and if the cue ball 4 can be accurately hit at this point, the target ball 3 will run along the pocket line 2 by physical movement and go into the pocket. (See Fig. 1-2) For your reference, in this case, the cue ball that hits the target ball will also be separated in a 90-degree direction from the target ball by physical movement, so advanced players can use this movement to move the cue ball to a point where it is easier to aim at the next target ball (called putting out). Summary of the Invention [Problem to be solved by the invention]

[0005] There are various ways to practice image ball technique, which is considered a must-have skill for billiard players. However, the general practice is to actually place another ball in that position to represent the image ball. In this case, the IP, which is the center of the other ball that is likened to an image ball, is recognized, and then the If you can remove the other balls that were 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 practice tool is a thin sheet-like tool that can be placed under the target ball to visualize the image ball and IP. By using this tool, the position of the image ball, its quantified thickness, and the IP can be visually confirmed, so if the player can strike the cue ball accurately on the IP, he or she can pocket the cue ball. (See non-patent document JP 2001-276296)

[0007] However, in this method, the practice tool placed under the target ball moves as the cue ball passes, so the practice tool needs to be set up every time a shot is taken, which is time-inefficient when you have to place the target ball and the cue ball in various places on the table for repeated practice. Furthermore, when the target ball is far from the pocket and the cue ball, it takes time to set up the practice tool, and in many cases it is difficult to tell whether the cause of a failed pocket shot is an incorrect IP or the way the ball was struck.

[0008] In the practice of acquiring the two basic techniques mentioned above, the present invention aims to provide an effective training tool that can be used to inexpensively and efficiently acquire image ball practice at thicknesses other than the full thickness. [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) Set the interval a to the diameter of the ball, and make the target ball and the image ball always adjacent to each other, forming a pocket line. A plate called pocket line plate 9 on (printing line) 10 was produced.

[0010] (Figure 1-4) Next, there are two image ball circumference circles 5 (center is IP) and two cue ball holes 14. A plate called a cue ball line plate 12 was made, which was cut along the cue ball line (printed line) 13.

[0011] The pocket line board 9 and the cue ball line board 12 are both made of a width of a The diameter of the ball is the same as that of the ball, and the length is equivalent to that of the extremely thin (approximately 0.15 mm) strong resin plate. Ta.

[0012] The assembled device is explained using the assembled diagram (Figure 2-1). The cue ball line plate 12 is layered on top of the cue ball line plate 12, and they slide and rotate with the IP, the center of the image ball outer circumference circle 5, as a common fulcrum. As a result, when the target ball is actually placed in the target ball hole 11, the target ball and the image ball will always be adjacent to each other and on the pocket line (printed line) 10, no matter where the two plates are relative to each other. Also, on the cue ball line (printed line) 13, there are two locations: the IP, the center of the image ball outer circumference circle 5, and cue ball holes 14.

[0013] (Figure 2-3) shows the actual placement of the target ball 3 and cue ball 4. The imaginary ball outer circle 5 on the cue ball line board 12 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 14, one near the IP and one far from it, which can be used according to the player's level of skill, etc.

[0014] Figure 2-4 is a partially enlarged view of Figure 2-3. A numerical value indicating the thickness is written on the circumference of the image ball outer circumference 5, and the point where the pocket line (printed line) 10 and the image ball outer circumference 5 intersect is the thickness (50% is clearly shown in Figure 8).

[0015] It is important that players do not just look at the IP and hit the cue ball, but input the clearly indicated thickness values, the angle and distance between the target ball and the cue ball, its position relative to the pocket, and the scenery (or the view) including the rails into their brains, and then hit the cue ball with the image of the target ball running along the pocket line and going into the pocket. (Advanced players also imagine the running of the cue ball in addition to the above.) Although there are many items to check above, with repeated practice it can be done in a few seconds. Based on that, we have devised a training tool that allows players to hit the cue ball into the pocket if they can hit the IP accurately with the cue ball. Effect of the Invention

[0016] + The appeal of billiards is that you can pocket the target balls placed in various places on the table as you wish, and not the cue ball. The process of controlling the ball and pocketing it one after another requires intellectual elements and moderate physical activity. The answer lies in the fact that you will inevitably face obstacles along the way in determining the depth of your difficulties. I think there are quite a few players who are unable to overcome the obstacles, become frustrated, and quit billiards. This device was designed to overcome this barrier and allow players to efficiently master the technique of image balls. It is said that it is difficult to visually identify the image ball and IP marked on this device. It also makes the image ball feel more familiar.

[0017] This device has overlapping pocket line boards and cue ball line boards that are long enough, and the board width is the same as the diameter of the ball, so it is easy to imagine the ball running on the board. Furthermore, since the board does not move easily when the ball passes over it, you can practice your weak ball placements over and over again, and even when practicing with different placements, you can practice repetitively in a time-efficient manner. You can also change the location and placement on the table and practice the same repetitively without this device. Through this process, you will be able to determine the IP and acquire the skills to hit the cue ball accurately even without this device.

[0018] A straight line leading to the IP is marked on the cue ball line board of this device, and the cue is released along that straight line. Hitting the cue ball on the IP is also a good way to practice hitting the ball straight and hitting the ball with full force. Whether or not you have hit the ball accurately can also be judged by whether or not the ball goes into your pocket. (However, strictly speaking, this excludes extremely weak strikes and twists.)

[0019] 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, which makes practice more interesting and motivates beginners, especially, to continue and improve their skills. [Brief description of the drawings]

[0020] [Figure 1] (Figure 1-1) is a shot practice with a straight shot and a full thickness shot. And (Figure 1-2) is a shot practice with a general image ball.

[0021] (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.

[0022] (Figure 1-4) is a diagram of the cue ball line board 12 in an unassembled state. The cue ball line (printed line) 13 and the image ball outer circle 5 (center is IP) are clearly printed. Two cue ball holes 14 are drilled on the cue ball line (printed line) 13, and the distance b between them is set to the same distance as one point on the rail (approximately 317 mm). The width of the cue ball line board 12 is set to the same length a as the diameter of the ball to make it easier to imagine the cue ball running along the line.

[0023] [Diagram 2] (Figure 2-1) is a diagram of the completed device, with the pocket line board 9 and cue ball line board 12 overlapping with the cue ball line board 12 on top, and they slide and rotate with IP, the center of the image ball outer circle 5, as a common fulcrum. With this configuration, when the target ball and the cue ball are actually placed, the target ball and the image ball will always be adjacent to each other and on the pocket line (printed line) 10 no matter where the two boards are relative to each other, and the IP, the center of the image ball, and the cue ball will be on the cue ball line (printed line) 13.

[0024] (Figure 2-2) is a cross-sectional view (from the right side) to make it easier to understand the structure of this device, in which the pocket line plate 9 and cue ball line plate 12 slide and rotate around the IP (the center position of the axis 15 in this figure) as a common fulcrum. The axis 15 of the upper layer cue ball line plate 12 passes through the axis hole 16 of the lower layer pocket line plate 9, and the pocket line plate 9 is sandwiched and glued in place between the pressing plate 17. (The drawing is exaggerated because both plates are made of extremely thin resin plates with a thickness of about 0.15 mm.)

[0025] Figure 2-3 shows a target ball 3 placed in a target ball hole on a pocket line board 9 facing the actual pocket direction, and a cue ball 4 placed on a cue ball line board 12. The player can pocket the cue ball by hitting the cue ball 4 accurately on the IP while visually checking the imaginary ball outer circle 5 and its center IP on the cue ball line (printed line) 13.

[0026] (Figure 2-4) is a partial enlarged view of the target ball 3 and the image ball outer circle 5 in the previous figure (Figure 2-3). The thickness is printed on the outer circumference of the image ball 5, and the thickness is indicated at the point of intersection (contact point) with the pocket line (printed line) 10. Note that in this drawing (plan view), the printed pocket line (printed line) 10 is hidden under the target ball 3, but in reality, the target ball 3 is a sphere and can be seen from the cue ball side.

[0027] [Diagram 3] (Figure 3-1), (Figure 3-2), (Figure 3-3), and (Figure 3-4) are examples of how the device can be arranged on a billiard table. Players practice with various arrangements, such as an arrangement where the player is not good at (Figure 3-1), (Figure 3-2), a very thin thickness (Figure 3-3), or an arrangement where the target ball or cue ball is far from the pocket (Figure 3-4). (Figure 3-5) shows a reference diagram of how the device can be attached to a storage box or cue case with a rubber band so that it can be carried around, since it is thin and long. [Explanation of symbols]

[0028] 1 pocket 2 Pocket Line 3 target ball 4 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 line board 13 Cue ball lines (printed lines) 14 Cue ball holes (2 places) 15-axis 16 Shaft hole 17 Shaft holder plate a Pocket line board width = cue ball line board width = ball diameter b Imaginary point IP and ball hole distance (approximately 317 mm) [Prior art documents] [Non-patent literature]

[0029] (Non)Patent Document 1 JP2019-013366

[0030] (Non)Patent Document 2: JP2001-276296A

Claims

1. The billiard practice tool is composed of two boards, one of which has an image ball adjacent to the target ball and an imaginary point clearly indicated on a pocket line on which the target ball is placed, and the other of which has a cue ball placed thereon and has an image ball and an imaginary point clearly indicated on a straight line from the cue ball.

2. The two boards of claim 1 overlap, slide and rotate with their respective imaginary points as common fulcrums, and no matter where the two boards are in relation to each other, the positional relationship between the target ball and the imaginary ball remains unchanged, and 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 by a numerical value.

Images