Billiard tap

Abstract

To provide a billiard tap that can reduce the degree of "jump" and "curve" that occurs when a cue ball is struck with a billiard cue, improve the straightness of the cue ball, and also control the jump and curve continuously with a very small amount of change. [Solution] The billiard tip attached to the tip of a billiard cue has a cylindrical or frustum shape with an upper surface, a lower surface, and a side surface, and has a hole on the upper surface or the side surface to reduce the degree of jump and curve that occurs when the cue hits the cue ball.

Description

[Technical Field]

[0001] The present invention relates to a billiards tap that is attached to the tip of a billiards cue. [Background technology]

[0002] Billiards is a popular indoor sport around the world. A typical example involves hitting a cue ball with a billiard cue (hereafter simply referred to as a "cue"), a cylindrical object about 5-9 mm thick and 9-14 mm high, attached to the end of a billiard table covered with woolen cloth. The cue ball is then struck (shot) at a target ball, propelling the target ball in the desired direction and into a pocket on the table. Billiards taps are commercially available in various forms, including single-layer, multi-layer, and resin-impregnated versions made from materials such as pigskin, cowhide, or synthetic resin (see Non-Patent Document 1, "NuBlo (Billiards Tools Blog)").

[0003] When beginners hit the cue ball with a billiards cue, it is important to be able to strike the cue ball with the billiards cue so that the cue ball strikes the target ball on a straight line connecting the center of the cue ball and the center of the target ball while rotating clockwise. This means that a billiards tip is required to give the cue ball the ability to move in a straight line, rotating clockwise when struck.

[0004] On the other hand, not only beginners but even professional players sometimes, to varying degrees, hit the cue ball off-center. For example, if the cue hits the right side of the cue ball, the cue ball will spin counterclockwise and deviate to the left, resulting in a "jump" phenomenon. Furthermore, the cue ball that has been thrown out in this way will curve in the opposite direction to the jump due to friction with the wool fabric of the billiard table. These "jump" and "curve" phenomena are caused by the fact that billiard players' cue ball striking accuracy is not consistent; in other words, deviations from the intended direction and strength of the strike occur.

[0005] In addition to the issue of the billiard player's hitting accuracy, it is also known that the ``jump'' and ``curve'' of the billiard table are affected by the material and slope of the billiard table, the material of the wool and changes in the coefficient of surface friction over time, the material of the cue ball, deformation of the cue ball from a perfect sphere over time due to wear, the material and curvature of the cue, changes in the shape of the tip over time, and changes in the hardness of the tip over time.

[0006] Furthermore, intermediate and advanced billiard players require spin control techniques, taking into account the positioning of the cue ball and target ball to intentionally create a curve and jump, in other words, to strike the cue ball with a cue ball to intentionally impart a clockwise or counterclockwise spin to the cue ball while anticipating the curve and jump. In this case, if the degree of curve and jump when striking the cue ball with a constant force is too great, even a slight difference in the shot can significantly change the curve and jump, reducing the accuracy of anticipation. To improve the control of the curve and jump, and ultimately the accuracy of anticipation, a tip has been proposed in which a hole is drilled in the center of the top surface of the tip and filled with a different material, thereby varying the hardness, elasticity, and slipperiness between the center and the surrounding area (Patent Document 1). [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2022-161826 [Non-patent literature]

[0008] [Non-Patent Document 1] "NuBro (Billiards Equipment Blog)"<URL:https: / / nu-blo.com / billiard-tip / #a2> Summary of the Invention [Problem to be solved by the invention]

[0009] However, the tip proposed in Patent Document 1 requires that the material of the tip be physically changed between the center and peripheral portions, which results in a discontinuity in the material at the boundary between the center and peripheral portions, making it necessary to avoid hitting the cue ball at the boundary of the tip, which also creates a discontinuity in the control of the jump and curve, making it difficult to control the jump and curve continuously with very small changes.In addition, the criteria for physically changing the material of the tip between the center and peripheral portions depend on the preferences and sense of each player, which makes it difficult for players to obtain tipping points that match their preferences and sense, which has been a problem.

[0010] To provide a billiard tap that can reduce the degree of "jump" and "curve" that occurs when hitting a cue ball with a billiard cue, improve the straightness of the cue ball, and also can control the jump and curve continuously with a very small amount of change. [Means for solving the problem]

[0011] The inventor hypothesized that in order to reduce the degree of jumping and curving of the cue ball when it is struck with a billiard cue and improve the straightness of the cue ball, the force applied to the peripheral side of the top surface of the tap could be made to escape to the inside of the periphery.He discovered that this could be achieved by making changes such as forming holes in the tap to reduce the mass of that part, and also discovered that the number of holes, hole diameter, hole pattern, etc. could be easily changed using commercially available equipment such as a general drilling machine, which led to the completion of this invention.

[0012] That is, the present invention provides a billiards tap that is attached to the tip of a billiards cue, the billiards tap having a cylindrical or frustum shape with an upper surface, a lower surface, and a side surface, and a hole on the upper surface or the side surface for reducing the degree of jump and curve that occurs when the cue strikes the cue ball.

[0013] The present invention also provides a billiard cue having a shaft connected to a butt, the tip of which is fitted with the billiard tip of the present invention. [Effects of the Invention]

[0014] The billiard tip of the present invention has a columnar or frustum-shaped shape with an upper surface, a lower surface, and a side surface, and has holes on the upper surface or the side surface that can reduce the degree of jump and curve that occurs when the cue ball is struck with the cue.As a result, when the cue ball is struck with a billiard cue having the billiard tip of the present invention attached to its tip (for example, when a twisted strike is made), the degree of jump and curve that occurs is reduced compared to the degree of jump and curve that occurs when the cue ball is struck under the same conditions (strike direction, strike strength) with a billiard cue having the same tip attached except that no holes are formed.In other words, the cue ball's straightness is improved.

[0015] Furthermore, such holes can be formed in the tap using commercially available equipment such as a general drilling machine, and it is possible to easily change the hole position, hole depth, hole diameter, number of holes, hole pattern, etc. Therefore, it is possible to continuously control the jump and curve with very small variations. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is an overall view of a billiard cue equipped with a billiard tip according to the present invention. [Figure 2A] FIG. 2A is a perspective view of a cylindrical billiard tap of the present invention. [Figure 2B] FIG. 2B is a perspective view of a billiard tap having a truncated cone shape according to the present invention. [Figure 3A] FIG. 3A is a schematic side view of a cylindrical billiard tap of the present invention. [Figure 3B] FIG. 3B is a schematic side view of a cylindrical billiard tap of the present invention, the upper surface of which is a convex curved surface. [Figure 3C] FIG. 3C is a schematic side view of a cylindrical billiard tap of the present invention, the upper surface of which is uneven. [Figure 4] FIG. 4 is an explanatory diagram of the jump and curve that occurs when the cue ball is struck with a billiard cue. [Figure 5] FIG. 5 is a cross-sectional view of a billiard tap having a vertical hole. [Figure 6] FIG. 6 is a cross-sectional view of another embodiment of a billiard tap having a vertical hole. [Figure 7] FIG. 7 is a top view of the billiard tap of FIG. [Figure 8A] FIG. 8A is a top perspective view of a billiard tap of the present invention having a groove-shaped transverse hole. [Figure 8B] FIG. 8B is a side perspective view of the billiard tap of the present invention shown in FIG. 8A as seen from the direction C. [Figure 9A]FIG. 9A is a top perspective view of a billiard tap according to another embodiment of the present invention having radial cross holes. [Figure 9B] 9B is a side perspective view of the billiard tap of the present invention shown in FIG. 9A as seen from the direction C. FIG. [Figure 10A] FIG. 10A is a top perspective view of a billiard tap according to another embodiment of the present invention having lattice-shaped horizontal holes, and is also a top perspective view of a billiard tap according to Example 2. [Figure 10B] FIG. 10B is a side perspective view of the billiard tap of the present invention shown in FIG. 10A as seen from the direction C. [Figure 11A] FIG. 11A is a top perspective view of a billiard tap of the present invention having angled holes. [Figure 11B] FIG. 11B is a side perspective view of the billiard tap of the present invention shown in FIG. 11A as seen from the C direction. [Figure 12A] FIG. 12A is a top perspective view of a billiard tap according to another embodiment of the present invention having angled holes. [Figure 12B] 12B is a side perspective view of the billiard tap of the present invention shown in FIG. 12A as seen from the direction C. FIG. [Figure 13] FIG. 13 is a top view of the billiard tap of the first embodiment. [Figure 14] FIG. 14 is a top perspective view of the billiard tap of the third embodiment. [Figure 15] FIG. 15 is a top perspective view of the billiard tap of the fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0017] The billiard tap of the present invention will be described in detail below with reference to the drawings. In each drawing, the same reference numerals represent the same or equivalent components.

[0018] <Overall configuration of billiard taps> As shown in FIG. 1, the billiard tip 10 of the present invention is attached to the tip of a billiard cue 200, which has a butt 20 connected to a shaft 22 provided with a protective material (so-called tip 21). Like conventional billiard tips, the tip 10 is made of a material such as pigskin, cowhide, or synthetic resin, either in a single layer, a multi-layered structure, or impregnated with resin. As shown in FIG. 2A, the billiard tip 10 of the present invention has a cylindrical shape, typically a cylindrical shape, with an upper surface 10a, a lower surface 10b, and a side surface 10c. Alternatively, as shown in FIG. 2B, the tip has a truncated cone shape, typically a circular truncated cone. Here, the upper surface 10a of the tip is the surface that directly contacts the cue ball, the lower surface 10b is the surface that is attached to the tip of the billiard cue (the tip or a seat attached to its surface), and the side surface 10c is the surface that separates the upper surface 10a from the lower surface 10b. The billiards tap 10 of the present invention is characterized by having holes 1 on the top surface 10a or side surface 10c for reducing the degree of jump and curve that occurs when the cue ball is struck (in other words, holes that can reduce the degree of jump and curve). By providing such holes in the tap, the mass of the tap can be reduced, allowing the tip to be crushed appropriately during a shot, improving the tip's bite (grip strength) and reducing cue misses (the phenomenon in which the tip slips the moment it comes into contact with the cue ball). In addition, the force of the tip returning to its original state from its crushed state can be utilized, allowing for more powerful shots.

[0019] The billiard cue 200 to which the billiard tip of the present invention is attached can be appropriately selected from among known billiard cues.

[0020] (Tap shape) The billiards tap 10 of the present invention has a columnar or frustum shape with an upper surface, a lower surface, and a side surface, and is preferably columnar because the surface area of ​​the upper surface is large and a large number of holes can be formed. Examples of columnar shapes include the cylindrical shape shown in FIG. 2A, as well as elliptical and prismatic shapes (triangular, square, pentagonal, hexagonal, and octagonal prisms), with the cylindrical shape being preferred because it provides a large area that can come into contact with the cue ball. Examples of frustum shapes include the truncated cone shape shown in FIG. 2B, as well as elliptical and frustum pyramid shapes (triangular, square, pentagonal, hexagonal, and octagonal).

[0021] Regarding the size of the billiard tip of the present invention, the diameter of lower surface 10b (the diameter of the circumscribing circle of the lower surface) is preferably 6 mm or more and 16 mm or less, and the height of the tip (the maximum distance between upper surface 10a and lower surface 10b) is preferably 4 mm or more and 10 mm or less. If the billiard tip is cylindrical, the diameter of upper surface 10a (the diameter of the circumscribing circle of the upper surface) is the same as that of lower surface 10b, and if it is frustum-shaped, it is preferably 50 to 95% of the diameter of lower surface 10b.

[0022] The top surface 10a of the billiard tip of the present invention, whether cylindrical or frustum-shaped, is usually a flat surface as shown in Figure 3A (a cross-sectional view of a cylindrical shape with the holes omitted). However, as shown in Figure 3B (a cross-sectional view of a cylindrical shape with the holes omitted), it is preferable that it be a convex surface (preferably a convex curved surface) because this improves the feel when striking the ball. It may also be an uneven surface, as shown in Figure 3C (a cross-sectional view of a cylindrical shape with the holes omitted). When the billiard tip 10 of the present invention is cylindrical and the top surface is a convex curved surface, the billiard tip itself will have the shape of a plano-convex lens (Figure 3B).

[0023] (tap hole) The number of holes, hole positions, hole opening shapes, hole diameters, hole depths, hole patterns, etc., provided on the top or side surfaces of the billiard tap of the present invention can be appropriately selected depending on the degree of reduction in the degree of jump and curve desired for the tap. Here, reducing the degree of jump means reducing the angle θ between the direction A in which the cue ball X is struck by the billiard cue and the direction B in which the cue ball launches (the jump direction), as shown in Figure 4, and reducing the degree of curve means reducing the ratio of the arrow height Y2 to the chord length Y1 of the arc of the curve Y.

[0024] The number of holes can be one, but multiple holes are preferred to ensure reduced jump and curve regardless of where the cue ball is struck on the top surface of the tip. Depending on the hole diameter, too few holes may not adequately reduce the weight of the billiard tip, while too many holes may cause the billiard tip to be overly crushed by shots, making it difficult for the tip to return to its original shape after being crushed reflexively, resulting in reduced striking accuracy. Therefore, in the case of vertical holes (described below), the number of holes is preferably 10 or more, more preferably 19 or more, and preferably 50 or less, and more preferably 39 or less. In the case of horizontal holes (described below), the billiard tip is more likely to be crushed by shots than vertical holes, so the number of holes is preferably 2 or more, more preferably 4 or more, and preferably 16 or less, and more preferably 10 or less. In the case of slanted holes, the number is preferably 2 or more, more preferably 4 or more, and preferably 36 or less, and more preferably 12 or less.

[0025] When there is only one hole, the hole may be located in the center of the top surface of the billiard tap or may be located eccentrically.When there are multiple holes, the holes may be evenly distributed on the top surface of the billiard tap, but it is preferable to have more holes in the central region than in the peripheral regions in order to reduce the mass of the central region compared to the peripheral regions of the top surface.

[0026] The opening shape of the hole is not particularly limited, and examples thereof include a circle, an equilateral triangle, a square, and an ellipse, but a circle is preferred because it is easy to process with a drilling machine. The hole can also be made with a press machine other than a drilling machine, but processing with a drilling machine, which reduces the mass of the tap, is preferred.

[0027] The hole diameter can be considered to be the diameter of the circumscribed circle of the hole, and is preferably 0.1 mm or more, more preferably 0.5 mm or more, and preferably 1.5 mm or less, and more preferably 0.8 mm or less. If the hole diameter is too small, the number of holes to be drilled increases, and the holes tend to be overly crushed by the shot. Conversely, if the hole diameter is too large, the rigidity of the tap decreases, and there is a concern that the effect of reducing the degree of jump and curve becomes too peaky.

[0028] (If the hole is vertical) The provision of such holes on the upper surface of a billiard tap will be explained in more detail below, taking the example of a plano-convex lens shape (Fig. 3B). That is, in the billiard tap of the present invention, when holes are provided from the upper surface 10a toward the lower surface, they may be provided at an angle, but it is preferable to provide vertical holes 1a that are provided vertically from the upper surface 10a toward the lower surface 10b, as shown in Fig. 5 (cross-sectional view). This is because it is easier to form the holes and to control the reduction of the degree of jump and curve, since the angle of inclination does not need to be considered compared to the case of inclined holes.

[0029] The depth of the vertical hole 1a is preferably 30% or more of the thickness of the tip in order to clearly obtain the effect of reducing mass, and may be a constant distance from the bottom surface 10b (for example, 1 mm from the bottom surface 10b), or may be a variable distance from the bottom surface 10b as shown in Figure 6 (cross-sectional view), or may penetrate all the way to the bottom surface 10b. Note that if a so-called seat is provided between the tip and the tip of the billiard cue, it is preferable that the vertical hole 1a penetrate all the way to the bottom surface 10b.

[0030] The pattern of the vertical holes when the billiard tip is viewed from above can be determined depending on the desired reduction in the degree of jump and curve of the tip, and they may be arranged randomly, but considering the controllability of the reduction in the degree of jump and curve, it is preferable that the vertical holes are arranged in a line symmetric pattern, which is a pattern that overlaps when folded in a straight line, a point symmetric pattern, which is a pattern that overlaps when rotated 180 degrees, or a rotational symmetric pattern, which is a pattern that overlaps when rotated 30, 45, 60, 90, or 120 degrees. In particular, a rotational symmetric arrangement is preferable.

[0031] Furthermore, when the billiard tip 10 is viewed from above, it is preferable that no vertical holes be provided in a ring-shaped region 10d extending inward from the outer periphery of the tip, the region having a width of 10% to 50% of the radius of the billiard tip, as shown in Figure 7. This is to make the outer periphery region of the billiard tip hard and the inner region soft (in other words, to make it easier to be crushed by a shot).

[0032] (If the hole is horizontal) The provision of holes on the side surface of a billiard tap will be described in more detail below, taking the case of FIG. 3A or 3B as an example. That is, in the billiard tap of the present invention, when holes are provided parallel to the bottom surface 10b from the side surface 10c, they may be provided as groove-shaped horizontal holes 1b on the top surface 10a as shown in FIG. 8A (top perspective view) and FIG. 8B (side perspective view from direction C), or as radial (e.g., cross-shaped) horizontal holes 1c in the depth direction as shown in FIG. 9A (top perspective view) and FIG. 9B (side perspective view from direction C), or as grid-shaped (e.g., square grid-shaped) horizontal holes 1d in the depth direction as shown in FIG. 10A (top perspective view) and FIG. 10B (side perspective view from direction C). Furthermore, when multiple horizontal holes are provided, the distance from the bottom surface 10b may be different for each hole or every other hole. The horizontal holes may also be through holes.

[0033] (If the hole is slanted) The provision of holes on the upper surface of a billiard tap will be explained in more detail below, taking the example of a plano-convex lens shape (FIG. 3B). That is, in the billiard tap of the present invention, when inclined holes 1e are provided from the upper surface 10a toward a predetermined position above the center of the lower surface 10b (for example, a position 1 mm above the center of the lower surface 10b), they can be provided as shown in FIG. 11A (top perspective view) and FIG. 11B (side perspective view). Alternatively, as shown in FIG. 12A (top perspective view) and FIG. 12B (side perspective view), a difference in depth may be provided between every other hole.

[0034] Although the holes have been explained separately as vertical holes, horizontal holes, and inclined holes, they can also be combined as desired. By combining them, it is expected that it will be possible to control the reduction in the degree of jump and curve at a delicate level.

[0035] (Method of manufacturing billiard taps) The billiard tap of the present invention can be manufactured by using a commercially available drill or other hole-making machine to form holes that can reduce the degree of jump and curve, as described above, in a billiard tap that has no holes made by a known method. The holes can be filled with a synthetic resin such as urethane resin or silicone resin to adjust the characteristics of the tap as desired.

[0036] (Use of billiard taps) The billiard tip 10 of the present invention as described above is attached with an adhesive to the tip of a billiard cue 200, which has a butt 20 and a shaft 21 connected together, as shown in Figure 1. In this way, a billiard cue with the billiard tip 10 of the present invention attached thereto also constitutes part of the present invention. The billiard cue to which the tip is not attached can be any known billiard cue. [Example]

[0037] The billiard tap of the present invention will be specifically described with reference to examples and comparative examples.

[0038] Example 1 A billiard tap (Elkmaster 14, manufactured by Tweeten) in the shape of a plano-convex lens with a diameter of 14 mm, a thickness of 6.5 mm, and a radius of 9 mm was prepared, and 25 vertical holes with a diameter of 0.5 mm were drilled from the top surface to the bottom surface to a depth of 1 mm from the bottom surface using a drilling machine, thereby creating the billiard tap of Example 1 (see Figure 13 (top view)).

[0039] Example 2 A billiard tap (Elkmaster 14, manufactured by Tweeten) with a plano-convex lens shape and a diameter of 14 mm, a thickness of 6.5 mm, and a radius of 9 mm was prepared, and four horizontal holes with a diameter of 0.8 mm were formed in a grid pattern at positions 2.5 mm and 3 mm from the bottom surface using a drilling machine, thereby producing the billiard tap of Example 2 (see Figure 10A (top perspective view)).

[0040] Example 3 A billiard tap (Elkmaster 14, manufactured by Tweeten) in the shape of a plano-convex lens with a diameter of 14 mm, a thickness of 6.5 mm, and a radius of 9 mm was prepared, and ten horizontal holes with a diameter of 0.8 mm were formed in a grid pattern at positions 2.5 mm and 3 mm from the bottom surface using a drilling machine, thereby producing the billiard tap of Example 3 (see Figure 14 (top perspective view)).

[0041] Example 4 A billiard tap (Elkmaster 14, manufactured by Tweeten) with a plano-convex lens shape and a diameter of 14 mm, a thickness of 6.5 mm, and a radius of 9 mm was prepared, and six inclined holes with diameters of 0.8 mm and six inclined holes with diameters of 1.0 mm were alternately formed using a drilling machine from the center of the underside toward a position 1 mm from the center, thereby producing the billiard tap of Example 4 (see Figure 15 (top perspective view)).

[0042] Comparative Example 1 A billiard tap (Elkmaster 14, manufactured by Tweeten) with a diameter of 14 mm, a thickness of 6.5 mm, and a radius of 9 mm, shaped like a plano-convex lens, was prepared as Comparative Example 1, with no holes on the top or side.

[0043] (Evaluation test) The billiard tips of Examples 1 to 3 and Comparative Example 1 were each attached to a billiard cue (manufactured by Predator), and a professional player was asked to strike the cue ball on a billiard table and evaluate the degree of deflection and curve. The degree of deflection and curve of Examples 1 to 3 was compared and evaluated with the degree of deflection and curve of the billiard tips of Comparative Example 1 attached. As a result, it was felt that the degree of deflection and curve of the billiard tips of Examples 1 to 3 attached was reduced compared to Comparative Example 1.

[0044] Furthermore, in the case of the billiard tap of Example 1, which has a vertical hole, the degree of mass reduction near the top surface of the tap is smaller than in the billiard taps of Examples 2 and 3, which have horizontal holes, so it felt like the degree of jump and curve was reduced.

[0045] When comparing the billiard taps of Example 2 and Example 3, which have different numbers of lateral holes, the billiard tap of Example 3, which has more lateral holes, is easier to crush, so the billiard tap of Example 2 felt like it had less jump and curve.

[0046] In the case of the billiard tap of Example 4, which had an inclined hole, the degree of jump and curve was reduced compared to the billiard tap of Comparative Example 1, but it felt like the reduction effect was smaller than in the case of the billiard taps of Examples 1 to 3. [Explanation of symbols]

[0047] 1 hole 1a Vertical hole 1b Groove-shaped horizontal hole 1c Radial cave 1d Lattice-shaped cave 1e Slanted hole 10 Billiard Tap 10a top surface 10b Bottom side 10c side 10d Ring-shaped region 20 Bat 21 Protective material (tip) 22 shaft 200 Billiard Cues X Cue Ball A Strike direction B. The direction of the cue ball's jump (the direction of the jump) θ is the angle between direction A and direction B Y Curve Y1: Chord length of curve Y Y2 Curve Y arrow height

Claims

1. A billiards tap provided at the tip of a billiards cue, The billiard tap has a columnar or frustum shape with an upper surface, a lower surface, and a side surface, the diameter of the lower surface is 6 mm or more and 16 mm or less, and the tap height is 4 mm or more and 10 mm or less, the top surface has holes for reducing the degree of jump and curve that occurs when the cue ball is struck with the cue; The holes are a plurality of vertical holes formed vertically from the upper surface to the lower surface, The diameter of each vertical hole is 0.1 mm or more and 1.5 mm or less, When the billiard tap is viewed from above, the plurality of vertical holes are arranged in rotational symmetry.

2. A billiards tap provided at the tip of a billiards cue, The billiard tap has a columnar or frustum shape with an upper surface, a lower surface, and a side surface, the diameter of the lower surface is 6 mm or more and 16 mm or less, and the tap height is 4 mm or more and 10 mm or less, the top surface has holes for reducing the degree of jump and curve that occurs when the cue ball is struck with the cue; The holes are a plurality of vertical holes formed vertically from the upper surface to the lower surface, The diameter of each vertical hole is 0.1 mm or more and 1.5 mm or less, A billiard tap in which no vertical hole is provided in a ring-shaped region extending from the outer periphery of the tap to the inside and having a width of 10% to 50% of the radius of the tap.

3. A billiards tap provided at the tip of a billiards cue, The billiard tap has a columnar or frustum shape with an upper surface, a lower surface, and a side surface, the diameter of the lower surface is 6 mm or more and 16 mm or less, and the tap height is 4 mm or more and 10 mm or less, the top surface has holes for reducing the degree of jump and curve that occurs when the cue ball is struck with the cue; The holes are a plurality of vertical holes formed vertically from the upper surface to the lower surface, The diameter of each vertical hole is 0.1 mm or more and 1.5 mm or less, When the billiard tap is viewed from above, the plurality of vertical holes are arranged rotationally symmetrically, and no vertical holes are provided in a ring-shaped region extending from the outer periphery of the tap to the inside and having a width of 10% to 50% of the radius of the tap.

4. A billiards tap provided at the tip of a billiards cue, The billiard tap has a columnar or frustum shape with an upper surface, a lower surface, and a side surface, The upper surface has an inclined hole formed inclined from the upper surface to the lower surface as a hole for reducing the degree of jump and curve that occurs when the cue ball is struck with the cue, The billiard tap has a diameter of the lower surface of 6 mm or more and 16 mm or less, a tap height of 4 mm or more and 10 mm or less, and a diameter of the inclined hole of 0.1 mm or more and 1.5 mm or less.

5. A billiards tap provided at the tip of a billiards cue, The billiard tap has a columnar or frustum shape with an upper surface, a lower surface, and a side surface, The upper surface has an inclined hole formed inclined from the upper surface to the lower surface as a hole for reducing the degree of jump and curve that occurs when the cue ball is struck with the cue, A billiard tap in which every other inclined hole has a difference in depth.

6. 6. The billiard tap according to claim 4, wherein a plurality of said oblique holes are provided.

7. 6. A billiard tap according to claim 4 or 5, wherein said upper surface is a convex curved surface.

8. 5. The billiard tap according to claim 4, wherein the diameter of said oblique hole is 0.5 mm or more and 0.8 mm or less.

9. A billiard cue having a shaft connected to a butt, the billiard tip according to any one of claims 1 to 5 attached to the tip of the shaft.

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