Putter mat and method for drawing putter trajectory curve

Abstract

To provide a putter mat enabling putting practice to increase the success rate of putting, and a method for drawing a putter trajectory curve contributing to putting practice to increase the success rate of putting. [Solution] A putter mat A, which is an example of a putter mat to which the present invention is applied, includes a main mat 1 and a placement sheet 2. The main mat 1 displays a ball placement section 10, a first target line 11, a first alignment section 12, and a distance reference line 13. The main mat 1 also displays a distance display line 14, a distance value 15, a first allowable marker 16, a second allowable marker 17, and a virtual ball section 18. The placement sheet 2 also displays a second target line 20, a second alignment section 21, multiple putter trajectory curves 22, and a contact point vertical line 23. The multiple putter trajectory curves 22 are curves for confirming the rotation trajectory of the putter head specific to the player. The multiple putter trajectory curves 22 are drawn on the placement sheet 2 as partial arc-shaped curves with different rotation radii.

Description

[Technical field]

[0001] The present invention relates to a putting mat and a method for drawing a putter trajectory curve, and more particularly to a putting mat that allows for putting practice to increase the success rate of putting, and a method for drawing a putter trajectory curve that contributes to putting practice to increase the success rate of putting. [Background technology]

[0002] In golf, putting involves rolling the ball onto the green with a putter and putting it into the cup, but putting skill has a big impact on the score. For this reason, various innovations have been made in golf putters and practice equipment to improve the success rate of putting.

[0003] For example, putting mats that can be easily set up and removed are widely used as putting practice tools. These putting mats generally have a structure in which straight lines and cups are provided on a strip-shaped mat having a surface that imitates the grain of grass.

[0004] In recent years, in order to prevent practice from becoming monotonous, putter mats have been proposed that not only allow the player to repeatedly putt, but also measure and compile ball position data to enable analysis of putting (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2023-56996 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, conventional putter mats, including the putter mat described in Patent Document 1, are not designed to enable the player to be aware of the trajectory of the putter head's stroke, which is the pendulum motion trajectory that is inclined relative to the vertical direction with the player as the center of rotation.

[0007] In putting, there are three conditions that must be met in order for the ball to roll straight into the target cup. The first condition is that the putter face must be at a right angle to the line connecting the ball and the cup.

[0008] The second condition is that the sweet area of ​​the putter face must coincide with the center of the ball at the time of impact. The sweet area refers to the area where the initial velocity of the ball can be kept constant at the time of impact.

[0009] Furthermore, the third condition is that, in a plan view, the trajectory of the putter head's stroke forms equal angles of incidence and emergence with respect to a straight line connecting the ball and the cup.

[0010] When practicing a putting motion that meets these three conditions, the proposed putter head stroke trajectory is one in which the putter head is pulled straight back and pushed straight out.

[0011] However, except for special putting movements, the trajectory of the stroke of the putter head for most players is a trajectory of pendulum motion with the player as the center of rotation and tilted relative to the vertical direction. In other words, the trajectory of the stroke of the putter head is a trajectory of circular motion with a certain radius of rotation with the player as the central axis in a plan view.

[0012] The trajectory of the pendulum motion inclined to the vertical direction with the player as the center of rotation is the trajectory that the shaft and putter head follow when rotating around the line connecting the bottom surface of the putter head and either the cervical or thoracic vertebrae of the player as the rotation axis when addressing the ball for putting, and around either the cervical or thoracic vertebrae of the player as the center of rotation.

[0013] When this rotational movement around either the player's cervical or thoracic vertebrae as the center of rotation is viewed from the direction connecting the ball and the cup, that is, from the side of the player's body, a lie angle is created between the shaft and the ground at address, and the line connecting the center of rotation and the bottom of the putter head is a diagonal line inclined relative to the vertical.

[0014] From this position, the player rotates around either the cervical or thoracic vertebrae as the center of rotation, pulling the putter head toward the ball (backward stroke), moving the putter head toward the ball, impacting the ball with the putter face, and then pushing the putter head further forward in the follow-through (forward stroke).

[0015] Since the series of putting movements is a rotational movement with the player's cervical or thoracic vertebrae as the center of rotation, the trajectory of the shaft and putter head is a pendulum trajectory with an inclined axis of rotation. In the above, this trajectory is called a pendulum trajectory with the player as the center of rotation and inclined with respect to the vertical.

[0016] Also, if we change our perspective, the trajectory of the putter head during the putting motion will be a partial arc tangent to a straight line that is parallel to the line connecting the positions of both shoulders at address when looking at the player from a plane.

[0017] Nevertheless, a contradiction arises because the putter head's trajectory, which is essentially a partial arc when viewed in a plane, is required to move in a straight, linear direction during the backward stroke before impact and the forward stroke after impact.

[0018] As a result, it becomes difficult to implement the three conditions mentioned above for rolling the ball straight into the target cup, particularly the third condition, that is, in a plan view, the trajectory of the putter head's stroke forms equal angles of entry and exit with respect to the line connecting the ball and the cup, which becomes an obstacle to improving the success rate of putting.

[0019] Furthermore, most previous putter mats had straight lines designed to encourage players to focus on pulling the putter head straight back and sending it out in a straight line, making it impossible to practice while being conscious of the trajectory of the putter head, which follows a partial arc when viewed in a plane.

[0020] In addition, when the putter head rotates around either the player's cervical or thoracic vertebrae, the radius of rotation of the putter head's trajectory, which describes a partial arc in a planar view, varies depending on the player's physique, posture at address, the degree of bending of the elbow, etc.

[0021] Therefore, if a player can grasp the rotation radius during his / her putting motion, he / she will be able to perform putting motion with a higher success rate.

[0022] The present invention has been devised in consideration of the above points, and has an object to provide a putting mat that enables putting practice to increase the success rate of putting. Another object of the present invention is to provide a method for drawing a putter trajectory curve that contributes to putting practice to increase the success rate of putting. [Means for solving the problem]

[0023] In order to achieve the above object, the putter mat of the present invention comprises a strip-shaped main mat, a first target line which is a straight line displayed on the main mat along the longitudinal direction of the main mat, a ball placement section which is a circular figure displayed on the main mat and is positioned at a position where the first target line passes through and indicates a position where a ball is placed, a first alignment section which is provided on the first target line of the main mat and next to the ball placement section, a strip-shaped placement sheet which can be placed on top of the main mat, a second target line which is a straight line displayed on the placement sheet along the longitudinal direction of the placement sheet, a second alignment section which is provided on the second target line of the placement sheet and serves as a reference for aligning the position of the first alignment section when the placement sheet is placed on top of the main mat and serves as a rotation center when the orientation of the placement sheet is tilted with respect to the orientation of the main mat, and a putter trajectory curve which is a plurality of curves having different partial arc radii displayed on the placement sheet, and each curve is tangent to the second target line at the position of the second alignment section.

[0024] Here, with a belt-shaped main mat, a first target line which is a straight line displayed on the main mat along the longitudinal direction of the main mat, and a ball placement part which is a circular figure displayed on the main mat and is positioned at the center of which the first target line passes and which indicates the position to place the ball, a ball can be placed on the ball placement part from above the main mat and placement sheet, and the first target line displayed on the main mat can be regarded as a straight line connecting the ball and the cup, allowing the putting action to be practiced. Also, even if the ball is not placed on the ball placement part, it is possible to practice the putting action by assuming that the ball has been placed and regarding the first target line as a straight line connecting the ball and the cup.

[0025] In this regard, the point that the ball placing portion is positioned at a position through which the first target line passes includes not only an embodiment in which the first target line is displayed inside a circular shape, but also an embodiment in which the first target line is not displayed inside the circular shape of the ball placing portion, but is displayed in a positional relationship in which the first target line passes through the center of the circular shape.

[0026] In addition, the first alignment portion is provided on the first target line of the main mat and next to the ball placement portion, and the second alignment portion is provided on the second target line of the placement sheet, and serves as a reference for aligning the position of the first alignment portion when placing the placement sheet on the main mat, so that when placing the placement sheet on the main mat, alignment can be performed using the first alignment portion and the second alignment portion as references. This makes it possible to align the position of the placement sheet in the longitudinal direction of the main mat.

[0027] In addition, the placement sheet has a second target line, which is a straight line displayed on the placement sheet along the longitudinal direction of the placement sheet, a second alignment portion that is provided on the second target line of the placement sheet and serves as a reference for aligning the position of the first alignment portion when the placement sheet is placed on the main mat, and a putter trajectory curve that is a plurality of partial arc-shaped curves with different radii and each curve is tangent to the second target line at the position of the second alignment portion, so that it is possible to confirm the trajectory of the rotational movement of the putter head with the player as the rotation center. That is, by taking the address stance with the second target line as a straight line parallel to the straight line connecting the positions of both shoulders when addressing putting in a planar view of the player and performing a putting movement, it is possible to grasp the positional relationship between the actual stroke trajectory of the putter head generated by the movement and the putter trajectory curve, which is a plurality of partial arc-shaped curves. Then, by checking which putter trajectory curve the actual putter head stroke trajectory overlaps with or is closest to, the player can know the rotation trajectory of the stroke trajectory of the putter head specific to that player in a planar view (hereinafter referred to as the "player's specific putter head rotation trajectory") and the approximate rotation radius of that rotation trajectory. By checking the player's own specific putter head rotation trajectory, the player can repeatedly practice putting while being conscious of the rotation of the putter head around the player as the rotation center.

[0028] The stroke trajectory of the putter head referred to here means the trajectory that the shaft and putter head follow when rotating around a line connecting the bottom surface of the putter head and either one of the player's cervical or thoracic vertebrae as the axis of rotation when addressing the ball for putting, and around either one of the player's cervical or thoracic vertebrae as the center of rotation.

[0029] Also, the placement sheet is formed in a strip shape that can be placed on the main mat, and when the placement sheet is placed on the main mat, the second alignment part serves as a reference for aligning the position of the first alignment part and as a rotation center when the placement sheet is tilted relative to the direction of the main mat, and the placement sheet has a plurality of curves with different partial arc radii displayed on the placement sheet, each of which has a putter trajectory curve that is tangent to the second target line at the position of the second alignment part, so that when the placement sheet is placed on the main mat by aligning the positions of the first alignment part and the second alignment part, the placement sheet can be tilted relative to the direction of the main mat. Also, this allows a player who has a habit of impacting the ball with the putter face in an open or closed direction during a putting motion to practice rolling the ball toward the cup while understanding the rotation trajectory of the putter head specific to the player.

[0030] That is, when putting is performed multiple times with the ball at a distance of about 1m from the cup, there is a tendency for some people to miss the ball and go to the right side of the cup more often than others, while others tend to go to the left side of the cup more often. A major factor for those who frequently miss the ball to the right side of the cup is that when impacting the ball, the putter face is not oriented perpendicular (square) to the line connecting the cup and the ball in a plan view, and the toe side of the putter head is tilted away from the cup compared to the heel side, so that the putter face is open (open). When impacting the ball with the putter face open, the ball flies out based on the orientation of the putter face, and the rolling ball is likely to miss the right side of the cup. Conversely, for those who frequently hit the ball to the left of the cup, a major factor is that when impacting the ball, the putter face is tilted in a plan view so that the toe side of the putter head is tilted closer to the cup than the heel side, i.e., the putter face is closed. When impacting the ball with a closed putter face, the ball flies out based on the orientation of the putter face, and the ball that rolls is likely to deviate to the left of the cup. Even if a player has a habit of tilting the putter face open or closed at impact, the stroke trajectory of the putter head (the path the putter head moves before and after impact) will be a rotational trajectory with the player as the center of rotation. Therefore, by aligning the positions of the first alignment section and the second alignment section and placing the alignment sheet on the main mat, the alignment sheet is tilted relative to the orientation of the main mat to match the player's tendency to tilt the putter face at impact, making it possible to practice putting while taking into account the player's tendency to tilt the putter face and visually being aware of the player's unique rotational trajectory of the putter head.

[0031] Specifically, if a player has a habit of opening the putter face at impact, the first alignment portion and the second alignment portion are aligned, and the second alignment portion is used as the center of rotation, and the entire alignment sheet is tilted in a closed direction relative to the first target line of the main mat, and the alignment sheet is placed. In this way, the second target line is tilted relative to the first target line in a plan view (for example, for a right-handed player, the end of the second target line on the cup side is lowered to the lower left in a plan view), and the putter trajectory curve is also tilted together with the second target line. In addition, in the second alignment portion, the surface perpendicular to the putter trajectory curve in a plan view is in a closed direction when it is assumed as the direction of the putter face at impact with the ball. Then, the player can grasp the putter trajectory curve that is close to the trajectory of his or her putter stroke and swing. Also, by being aware of the putter trajectory curve, the swing is made while being aware of the inclination (closing) of the surface perpendicular to the putter trajectory curve at the second alignment portion in plan view, and even if the putter face has a tendency to open at impact, it is affected by the inclination of the surface perpendicular to the putter trajectory curve. As a result, when the putter face actually hits the ball, the orientation of the putter face approaches an orientation perpendicular to the first target line, making it easier to impact the ball with that orientation of the face. And the hit ball is more likely to roll straight toward the cup. In this way, it is possible to practice acquiring a putting motion that makes the ball roll straight toward the cup, taking into account the individual's tendency to open the putter face at impact.

[0032] Specifically, if a player has a habit of closing the putter face at impact, the first alignment portion and the second alignment portion are aligned, and the second alignment portion is used as the center of rotation to tilt the entire arrangement sheet in an open direction with respect to the first target line of the main mat, and the arrangement sheet is arranged. In this way, the second target line is inclined with respect to the first target line in a plan view (for example, for a right-handed player, the end of the second target line on the cup side rises to the upper left in a plan view), and the putter trajectory curve is also inclined together with the second target line. In addition, in the second alignment portion, the surface perpendicular to the putter trajectory curve in a plan view is in an open direction when it is assumed that the putter face is oriented when impacting the ball. Then, the player can grasp the putter trajectory curve that is close to the trajectory of his or her putter stroke and swing. Also, by being aware of the putter trajectory curve, the swing is made while being aware of the inclination (open) of the surface perpendicular to the putter trajectory curve at the second alignment part in plan view, and even if the putter face has a tendency to close at impact, it is affected by the inclination of the surface perpendicular to the putter trajectory curve. As a result, when actually hitting the ball, the orientation of the putter face will approach an orientation perpendicular to the first target line, and it becomes easier to impact the ball with that orientation of the face. And the hit ball will tend to roll straight toward the cup. In this way, it is possible to practice a putting motion that makes the ball roll straight toward the cup, taking into account the person's tendency to close the putter face at impact.

[0033] In addition, when a pin member is inserted into the position of the first alignment portion and the second alignment portion to rotate the placement sheet relative to the main mat, the inclination of the placement sheet relative to the main mat can be adjusted using the pin member as a rotation axis. Also, the pin member can prevent the placement sheet from shifting in position along the longitudinal direction of the main mat, for example.

[0034] In addition, when five putter trajectory curves are provided, the putter trajectory curves reflect five different rotation radii of stroke trajectories of different putter heads, and a wide range of rotation radii can be indicated on the layout sheet. As a result, the structure can fully accommodate the difference in rotation radii of the rotation trajectory of the putter head specific to each player in plan view, which differs depending on the player's physique, posture at address, bending of elbow, etc.

[0035] In addition, if the main mat is provided with multiple distance indication lines along the first target line, indicating distances at regular intervals based on the first alignment section, it becomes easy to check the distance between the ball and the putter head when practicing putting. This makes it even easier to understand the trajectory of your own putter head.

[0036] In addition, if the placement sheet is made of a transparent or semi-transparent material, the first target line displayed on the main mat becomes visible when the placement sheet is placed on top of the main mat. This makes it easier to check the positional relationship between the first target line and the putter trajectory curve displayed on the placement sheet, and in particular, when the placement sheet is tilted relative to the main mat, it becomes possible to practice putting motion while visually observing the first target line, which is likened to a straight line connecting the ball and the cup.

[0037] When the main mat displays a first tolerance line, which is a straight line passing through the first alignment part in a direction along the first target line and forms an angle of 5.61 degrees with the first target line, and a second tolerance line, which is a straight line passing through the first alignment part, is provided between the first target line and the first tolerance line, and forms an angle of 1.87 degrees with the first target line, the player can imagine that the tangent to the rotational trajectory of the player's unique putter head at the time of impact in a plan view is within the angle formed by the first target line and the first tolerance line, and the impacted ball can be easily rolled within the angle formed by the first target line and the second tolerance line. This tangent to the rotational trajectory of the player's unique putter head at the time of impact in a plan view is a line that indicates the stroke direction of the putter head at the time of impact (the direction in which the putter head tries to move at the time of impact). The first tolerance line forms an angle of 5.61 degrees with the first target line, and the second tolerance line forms an angle of 1.87 degrees with the first target line. This 1.87 degrees is the exit angle of the ball that can be calculated from the radius of the golf cup and the radius of the golf ball and can be hit 1m away from the cup and enter the cup. In other words, 1.87 degrees or less is the maximum exit angle that is allowed for the ball to enter the cup, and 5.61 degrees is the maximum incidence angle of the stroke trajectory of the putter head that is allowed to roll the ball to that exit angle. By using this first tolerance line as a guide and being aware of the tangent at the time of impact of the rotation trajectory of the putter head specific to the player in a plan view, the success rate of putting within 1m from the cup can be increased. In addition, since the putter can be stroked within a certain range of angles, within 5.61 degrees, the psychological burden on the player can be reduced.

[0038] When the main mat displays a third tolerance line, which is a straight line passing through the first alignment part in a direction along the first target line and is in a positional relationship symmetrical to the first tolerance line with respect to the first target line, and a fourth tolerance line, which is a straight line passing through the first alignment part and is in a positional relationship symmetrical to the second tolerance line with respect to the first target line, the player can have an image of placing not only the first tolerance line but also the tangent of the rotational trajectory of the putter head specific to the player at the time of impact within the angle between the first target line and the third tolerance line in a plan view, and the impacted ball can be easily rolled within the angle between the first target line and the fourth tolerance line. That is, for example, the structure is capable of handling both an outside-in or inside-out trajectory with respect to the first target line and the first alignment part.

[0039] In order to achieve the above object, the putter mat of the present invention comprises a strip-shaped main mat, a first target line which is a straight line displayed on the main mat along the longitudinal direction of the main mat, a ball placement section which is a circular figure displayed on the main mat and is positioned at a position through which the first target line passes, and which indicates a position to place a ball, a first alignment section which is provided on the first target line of the main mat and next to the ball placement section, a strip-shaped placement sheet which can be placed on top of the main mat, a second target line which is a straight line displayed on the placement sheet along the longitudinal direction of the placement sheet, a second alignment section which is provided on the second target line of the placement sheet and serves as a reference for aligning the position of the first alignment section when the placement sheet is placed on top of the main mat and serves as a rotation center when the orientation of the placement sheet is tilted with respect to the orientation of the main mat, and a putter trajectory curve which is a partial arc-shaped curve displayed on the placement sheet and which is tangent to the second target line at the position of the second alignment section.

[0040] Here, the placement sheet is formed in a strip shape that can be placed on the main mat, and when the placement sheet is placed on the main mat, it serves as a reference for aligning the position of the first alignment part and as a rotation center when tilting the placement sheet relative to the direction of the main mat, and has a putter trajectory curve that is a partial arc-shaped curve displayed on the placement sheet and is tangent to the second target line at the position of the second alignment part, so that when the placement sheet is placed on the main mat by aligning the positions of the first alignment part and the second alignment part, it becomes possible to tilt the placement sheet relative to the direction of the main mat when placing it on the main mat. This also allows a player who has a habit of impacting the ball with the putter face in an open or closed direction during a putting motion to practice rolling the ball toward the cup while understanding the rotation trajectory of the putter head unique to the player.

[0041] In order to achieve the above object, the putter mat of the present invention comprises a strip-shaped main mat, a first target line which is a straight line displayed on the main mat along the longitudinal direction of the main mat, a ball placement section which is a circular figure displayed on the main mat and is disposed at a position through which the first target line passes and which indicates a position for placing a ball, a first alignment section provided on the first target line of the main mat and adjacent to the ball placement section, a strip-shaped placement sheet which can be placed on top of the main mat, a second target line which is a straight line displayed on the placement sheet along the longitudinal direction of the placement sheet, and a second alignment section which is provided on the second target line and serves as a reference for aligning the position of the first alignment section when the placement sheet is placed on top of the main mat, and which serves as a rotation center when the placement sheet is tilted relative to the orientation of the main mat; and a putter trajectory curve which is a plurality of partial arc-shaped curves displayed on the placement sheet, each of which is tangent to the second target line at the position of the second alignment section, and which is a line which imitates the trajectory of a predetermined pendulum motion which is the stroke trajectory of the putter head when the player is viewed from the side direction which is the direction connecting the ball and the cup.

[0042] Here, the placement sheet is formed in a strip shape that can be placed on the main mat, and when the placement sheet is placed on the main mat, the second alignment part serves as a reference for aligning the position of the first alignment part and as a rotation center when the placement sheet is tilted relative to the direction of the main mat, and the placement sheet has a plurality of curves with different partial arc radii displayed on the placement sheet, each of which has a putter trajectory curve that is tangent to the second target line at the position of the second alignment part, so that when the placement sheet is placed on the main mat by aligning the positions of the first alignment part and the second alignment part, the placement sheet can be tilted relative to the direction of the main mat. This allows a player who has a habit of impacting the ball with the putter face in an open or closed direction during a putting motion to practice rolling the ball toward the cup while understanding the rotation trajectory of the putter head specific to the player.

[0043] In this case, the trajectory of the specified pendulum motion, which is the stroke trajectory of the putter head when the player is viewed from the side in the direction connecting the ball and the cup, refers to the trajectory that the shaft and putter head take when rotating around a line connecting either one of the player's cervical or thoracic vertebrae and the bottom surface of the putter head as the axis of rotation and around either one of the player's cervical or thoracic vertebrae as the center of rotation when addressing the ball.

[0044] In addition, in order to achieve the above-mentioned object, the putter trajectory curve drawing method of the present invention includes a position information acquisition step of displaying a reference point and a target line which is a straight line passing through the reference point, having a player perform a putter stroke movement along the target line using the reference point as a position to place the ball, and acquiring position information of at least one point on the trajectory of the movement; a first curve drawing step of drawing a partial arc-shaped curve connecting the position of the position information acquired in the position information acquisition step and the reference point in a planar view; and a second curve drawing step of drawing a partial arc-shaped curve which is linearly symmetrical to the curve drawn in the first curve drawing step, in a planar view, based on an orthogonal line which passes through the reference point and is perpendicular to the target line.

[0045] Here, in the position information acquisition process, a reference point and a target line, which is a straight line passing through the reference point, are displayed, and the player makes a putter stroke along the target line, with the reference point being the position where the ball will be placed, and by acquiring position information of at least one point on the trajectory of the putter head's movement, it is possible to determine one position on the trajectory of the putter head in the rotational movement of the putter head specific to that player.

[0046] Furthermore, in the first curve drawing process, by drawing a partial arc-shaped curve in a planar view that connects the position of the positional information acquired in the positional information acquisition process and a reference point, it is possible to draw a portion of the curve of the rotational trajectory of the putter head in a rotational motion of the putter head specific to that player in a planar view.

[0047] In addition, in the second curve drawing step, a partial arc-shaped curve is drawn that is symmetrical to the curve drawn in the first curve drawing step, in plan view, with reference to an orthogonal line that passes through the reference point and is perpendicular to the target line. This partial arc-shaped curve is a curve of a rotational trajectory of a putter head in a rotational motion of the putter head specific to the player, and is centered on the reference point. This curve reflects the rotational motion of the putter head specific to the player, and can be used for putting practice by displaying the curve on a putter mat, for example. In addition, a partial arc-shaped curve reflecting the rotational motion of the putter head specific to the player can be drawn with a simple operation. Effect of the Invention

[0048] The putter mat of the present invention allows for practice of putting to increase the success rate of putting. Furthermore, the method for plotting a putter trajectory curve according to the present invention contributes to putting practice that increases the success rate of putting. [Brief description of the drawings]

[0049] [Figure 1] 1 is a plan view showing the main mat and placement sheet that make up the putter mat of the present invention separated from each other. FIG. [Diagram 2] This is a plan view showing the putter mat shown in Figure 1 with the placement sheet placed straight on top of the main mat. [Diagram 3] This is a plan view showing the putter mat shown in Figure 1 in a state where the placement sheet is placed with the entire placement sheet tilted counterclockwise on the paper surface relative to the first target line of the main mat. [Figure 4] This is a plan view showing the putter mat shown in Figure 1 in a state where the placement sheet is placed with the entire placement sheet tilted in a clockwise direction on the paper surface relative to the first target line of the main mat. [Diagram 5] FIG. 2 is a schematic plan view showing a state when a putter head impacts a ball. [Figure 6]1 is a schematic side view of a putter head impacting a ball, as viewed from the side of a player's body. FIG. [Figure 7] 1 is a schematic front view showing the position of a putter head at certain points in the forward stroke during and after impact in a putting motion; [Figure 8] 8 is a schematic side view of the state shown in FIG. 7, as seen from the side of the player's body. [Figure 9] FIG. 2 is a plot diagram for creating a curve of a player's specific putter head rotational trajectory in plan view. [Figure 10] 1 is a schematic diagram showing the relationship between the stroke direction of a putter head and the direction in which a ball is emitted. [Figure 11] 1 is a schematic diagram showing the relationship between the stroke direction of a putter head and the direction of launch of a ball, and a rotation trajectory of a putter head specific to a player. [Figure 12] 1 is a schematic diagram showing the relationship between the stroke direction of a putter head, the exit direction of a ball, and the radius of a cup. [Figure 13] 1 is a schematic plan view showing a putter mat provided with a third tolerance marker and a fourth tolerance marker. [Figure 14] 1 is a schematic plan view showing another example of the putter mat of the present invention. FIG. [Figure 15] This is a plan view showing the putter mat shown in Figure 14 in a state where the placement sheet is placed with the entire placement sheet tilted counterclockwise on the paper surface relative to the first target line of the main mat. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0050] Hereinafter, embodiments of the present invention will be described with reference to the drawings for the purpose of understanding the present invention. It should be noted that the structure shown below is merely an example of the present invention, and the contents of the present invention are not limited thereto.

[0051] In the following description, with reference to Figs. 2 and 5, the upper side of the paper is referred to as "outer", "toe" or "outer side" and the lower side of the paper is referred to as "inner", "heel" or "inner side". With reference to Figs. 2 and 5, the left side of the paper is referred to as "left", "left side" or "cup side", and the right side of the paper is referred to as "right", "right side" or "opposite side of the cup". If necessary, the direction connecting the outer and inner sides is referred to as the "outer-inner direction", and the direction connecting the left and right sides is referred to as the "left-right direction". If necessary, the direction toward the left is referred to as the "cup direction", and the direction toward the right is referred to as the "opposite direction of the cup".

[0052] In the following description, the upper side of the paper is referred to as "upper", "upper" or "vertically upper" with reference to FIG. 6, and the lower side of the paper is referred to as "lower", "lower" or "vertically lower". With reference to FIG. 6, the right side of the paper is referred to as "outer", "toe" or "outer side" or "toe side", and the left side of the paper is referred to as "inner", "heel" or "inner side" or "heel side". Furthermore, the direction connecting upper and lower is referred to as the "up-down direction" or "vertical direction" as necessary. Furthermore, "outer" and "inner" with reference to FIG. 2 and FIG. 5 above have the same relationship as "outer" and "inner" in FIG. 6.

[0053] In the following description, the direction from the front to the back of the paper with reference to Fig. 6 is referred to as the "cup direction," and the direction from the back to the front of the paper is referred to as the "opposite direction from the cup." Also, the "direction from right to left" in "left" and "right" with reference to Figs. 2 and 5 has the same relationship as the "cup direction" with reference to Fig. 6, and the "direction from left to right" in "left" and "right" with reference to Figs. 2 and 5 has the same relationship as the "opposite direction from the cup" with reference to Fig. 6.

[0054] As shown in Fig. 1, a putter mat A, which is an example of a putter mat to which the present invention is applied, includes a main mat 1 and a placement sheet 2. Note that Fig. 1 shows a state in which the main mat 1 and the placement sheet 2 are separated.

[0055] The main mat 1 is the main body of the putter mat A that is placed on the floor surface on which the putter mat A is used. The placement sheet 2 is a sheet body that allows the player to confirm or visually confirm the rotation trajectory of the putter head specific to the player. The rotation trajectory of the putter head specific to the player will be described later.

[0056] The main mat 1 is a member for practicing putting by placing the placement sheet 2 on top of it in a desired orientation. In addition, at that time, a ball is placed on the placement sheet 2 at the position of the ball placement section 10 described later to practice putting. It is also possible to check the putting action without placing a ball on the ball placement section 10. Next, the detailed structure of each member will be described.

[0057] [Display of main mat] As shown in Fig. 1, the main mat 1 is marked with a ball placement area 10, a first target line 11, a first alignment area 12, and a distance reference line 13. The main mat 1 also is marked with a distance indication line 14, a distance numerical value 15, a first allowable marker 16, a second allowable marker 17, and a virtual ball area 18.

[0058] Here, the ball placement section 10 is a mark that serves as a reference for showing the position where the ball should be placed on the main mat 1 and the placement sheet 2. The ball placement section 10 is depicted with a circular shape with the same diameter as the size of the ball.

[0059] The first target line 11 is a straight line drawn on the main mat 1 along the longitudinal direction (left-right direction) of the main mat 1, and is used as a straight line connecting the ball and the putt when practicing putting. The first target line 11 is drawn in a positional relationship that passes through the center of the ball placement portion 10.

[0060] In addition, the first alignment portion 12 is a portion for determining the position of the placement sheet 2 along the longitudinal direction of the main mat 1 via the second alignment portion 21 and a fixing pin (not shown) described later when placing the placement sheet 2 on top of the main mat 1.

[0061] The first alignment portion 12 is formed as a circular hole that penetrates the main mat 1 in the vertical direction. The first alignment portion 12 is provided on the first target line 11 and next to the right end portion of the ball placement portion 10.

[0062] Further, the distance reference line 13 is a line indicating the reference position (0 m) of the distance indication line 14 which indicates the distance from the ball placement part 10, based on the ball placement part 10. The distance reference line 13 is drawn as a straight line which is perpendicular to the first target line 11 and passes through the first alignment part 12.

[0063] Further, a plurality of distance indication lines 14 are provided at 5 cm intervals from distance reference line 13 along the direction toward or away from the cup. Further, distance indication lines 14 are drawn in a direction perpendicular to first target line 11. Further, distance numerical value 15 is numerical information reflecting the distance between each distance indication line 14 and distance reference line 13.

[0064] The first tolerance marker 16 is a line indicating the maximum incidence angle of the putter head relative to the ball that is permitted for the ball to land in a cup within 1 m from the ball when the putter head is used to hit the ball placed on the ball placement section 10. The second tolerance marker 17 is a line indicating the maximum exit angle of the ball that is permitted for the ball to land in a cup within 1 m from the ball.

[0065] The first tolerance marker 16 here corresponds to the first tolerance line in the claims of the present application, and the second tolerance marker 17 corresponds to the second tolerance line in the claims of the present application.

[0066] The first tolerance marker 16 is a straight line that passes through the first alignment section 12 and forms an angle of 5.61 degrees with the first target line. The second tolerance marker 17 is a straight line that passes through the first alignment section 12 and forms an angle of 1.87 degrees with the first target line. Details of the setting of these angles will be described later.

[0067] Furthermore, the first tolerance marker 16 and the second tolerance marker 17 are positioned outside the first target line 11 in the direction away from the cup with respect to the distance reference line 13, and positioned inside the first target line 11 in the cup direction. In other words, they are drawn as lines corresponding to a so-called outside-in trajectory with the first target line 11 as the reference.

[0068] The imaginary ball portion 18 is a portion in which multiple circular figures with the same diameter as the size of the ball are drawn from the distance reference line 14 in the direction away from the cup. The imaginary ball portion 18 is a figure that makes it easier to be aware of the diameter of the golf ball.

[0069] In addition, the main mat 1 has a first alignment portion 12 and a first target line 11 aligned with the second alignment portion 21 and the second target line 20 of the placement sheet 2, and the position of the outer edge of the placement sheet 2 is shown by a dotted line indicated by the symbol 2A when the placement sheet 2 is superimposed on the main mat 1.

[0070] The main mat 1 is a belt-shaped sheet member, and can be made of various materials, such as carpet fabric or a resin sheet.

[0071] Here, it is not necessary that the ball placement portion 10 is a circular shape with the same diameter as the size of the ball, and the diameter size is not limited as long as the circular shape serves as a marker for placing the ball. However, it is preferable that the ball placement portion 10 is a circular shape with the same diameter as the size of the ball, because this makes it easier to visualize the ball more specifically when practicing putting without placing the ball.

[0072] Moreover, the first alignment portion 12 does not necessarily have to be formed as a circular hole penetrating the main mat 1 in the vertical direction, and its shape and formation method can be appropriately selected as long as it is possible to align it with the second alignment portion 21. However, it is preferable that the first alignment portion 12 is formed as a hole penetrating the main mat 1 in the vertical direction, because the first alignment portion 12 and the second alignment portion 21 can be aligned via a pin member (not shown) described later, and the placement sheet 2 can be rotatably supported around the position of the second alignment portion 21.

[0073] Also, it is not necessary that the distance reference line 13, the distance indication line 14, and the distance numerical value 15 are drawn on the main mat 1. However, it is preferable that the distance reference line 13, the distance indication line 14, and the distance numerical value 15 are drawn on the main mat 1, because this makes it easier to visually confirm the distance from the ball placement part 10 based on the ball placement part 10 from the information of the multiple straight lines provided at regular intervals and the numbers corresponding to the distance, and makes it easier to grasp the sense of distance when practicing putting.

[0074] Also, the distance indication lines 14 do not necessarily have to be provided at 5 cm intervals based on the distance reference line 13, and the size of the intervals can be set appropriately. For example, an embodiment in which the distance indication lines 14 are drawn at intervals of 10 cm or the like is also possible.

[0075] Moreover, it is not necessary that the first permissible marker 16 and the second permissible marker 17 are drawn on the main mat 1. However, it is preferable that the first permissible marker 16 and the second permissible marker 17 are drawn on the main mat 1, because this enables the putting practice to be performed while visually being aware of the maximum incidence angle of the putter head with respect to the ball in order to put the ball into the cup, with respect to the stroke direction of the putter head at the time of impact when putting a ball within 1 m of the cup.

[0076] In addition, instead of the first tolerance marker 16 and the second tolerance marker 17, a third tolerance marker 160 and a fourth tolerance marker 170 are provided, which are positioned linearly symmetrically to the first tolerance marker 16 and the second tolerance marker 17 with respect to the first target line (see Figure 13).

[0077] The third tolerance marker 160 and the fourth tolerance marker 170 are located inside the first target line 11 in the direction away from the cup, and outside the first target line 11 in the cup direction, based on the distance reference line 13 (see Figure 13).

[0078] In other words, the third tolerance marker 160 and the fourth tolerance marker 170 can be used as lines corresponding to a so-called inside-out trajectory based on the first target line 11. As a further embodiment, a mode in which four types of markers, the first tolerance marker 16, the second tolerance marker 17, the third tolerance marker 160, and the fourth tolerance marker 170, are drawn on the main mat 1 can also be adopted.

[0079] Also, it is not necessary that the imaginary ball portion 18 is drawn on the main mat 1. However, it is preferable that the imaginary ball portion 18 is drawn on the main mat 1, since this makes it easier for the player to be aware of the diameter of the golf ball when practicing putting.

[0080] [Show placement sheet] Next, the display of the layout sheet 2 will be described. As shown in FIG. 1, on the arrangement sheet 2, a second target line 20, a second alignment portion 21, a plurality of putter trajectory curves 22, and a contact point vertical line 23 are displayed.

[0081] Here, the second target line 20 is a line that is regarded as a straight line parallel to the straight line connecting the positions of both shoulders when addressing the ball for putting when viewed from above. The player takes a stance so that the straight line connecting the positions of both shoulders when addressing the ball for putting is parallel to the second target line, and performs a putting motion, whereby the player can confirm, among the multiple putter trajectory curves 22, the curve that is closest to the trajectory of his / her own putter head.

[0082] The second alignment portion 21 is a portion for aligning with the first alignment portion 12 and determining the position of the arrangement sheet 2 along the longitudinal direction of the main mat 1 via a fixing pin (not shown) when the arrangement sheet 2 is placed on top of the main mat 1. The second alignment portion 21 is formed as a circular hole penetrating the arrangement sheet 2 in the vertical direction.

[0083] The second alignment portion 21 is a portion that serves as the center of rotation when the arrangement sheet 2 is arranged with an inclination relative to the main mat 1.

[0084] That is, the first alignment portion 12 and the second alignment portion 21 are aligned, and a fixing pin (not shown) is inserted from above into the main mat 1 and the placement sheet 2 to rotatably support the placement sheet 2. The placement sheet 2 can be rotated around the second alignment portion 21, and positioned with its inclination relative to the main mat 1 changed.

[0085] The placement sheet 2 is a strip-shaped sheet material made of a transparent film material and has a certain length in the left-right direction. Therefore, when the placement sheet 2 is placed at an angle to the main mat 1, the length and weight of the placement sheet 2 itself make it difficult for the position to shift in the rotation direction around the second alignment portion 21.

[0086] The fixed pin is a T-shaped pin with a height of about 2 mm to 4 mm, and has a shape and size that does not interfere with the movement of the putter head when hitting a ball placed on the ball placement portion 10 with the putter head.

[0087] The plurality of putter trajectory curves 22 are curves for confirming the rotation trajectory of the putter head specific to the player. The plurality of putter trajectory curves 22 are drawn on the layout sheet 2 as partial arc-shaped curves each having a different rotation radius. The layout sheet 2 also has five putter trajectory curves 22 drawn on it.

[0088] The partial arc-shaped curves in the plurality of putter trajectory curves 22 are drawn to have rotation radii of 843 cm, 411 cm, 273 cm, 195 cm, and 155 cm, in order from the one closest to the second target line 20. Note that these values ​​are merely examples and can be set appropriately.

[0089] In addition, each of the multiple putter trajectory curves 22 is tangent to the second target line 20 at the position of the second alignment portion 21 on the second target line 20. In other words, the position of the second alignment portion is the tangent point, and the second target line 20 is a tangent to each of the putter trajectory curves 22.

[0090] Here, the rotational trajectory of the putter head specific to a player refers to the rotational trajectory of the putter head in the stroke trajectory during the putting motion, with the player as the center of rotation, and this rotational trajectory has a rotational radius specific to the player in a planar view.

[0091] The stroke trajectory of the putter head referred to here means the trajectory that the shaft and putter head follow when rotating around a line connecting the bottom surface of the putter head and either one of the player's cervical or thoracic vertebrae as the axis of rotation when addressing the ball for putting, and around either one of the player's cervical or thoracic vertebrae as the center of rotation.

[0092] In addition, the bones in the player's cervical or thoracic vertebrae refer to any of the seven cervical or twelve thoracic vertebrae that make up the human spine. Which bone is the center of rotation depends on the player's physique, posture at address, bending of the elbow, etc., but in the rotational motion of putting, one of the bones is the center of rotation.

[0093] As shown in Figure 6, in a rotational motion with the center of rotation P being either the cervical or thoracic vertebrae of the player, if the player is viewed from left to right along the left-right direction at the time of impact with the ball, that is, if viewed from the side of the player's body, a lie angle L is created between the shaft S and the ground at address, and the line connecting the center of rotation P and the bottom surface B of the putter head forms a diagonal line F that is inclined relative to the vertical.

[0094] From this position, the player uses either the cervical or thoracic vertebrae of the player as the center of rotation P and pulls the putter head toward the ball (backward stroke), moves the putter head toward the ball, impacts the ball with the putter face, and then pushes the putter head further forward in the follow-through (forward stroke).

[0095] During the putting motion, the oblique line F moves while being inclined in the vertical direction, and for example, as shown in FIG. 7, the oblique line F follows a trajectory that passes through a slope F' that is inclined in the vertical direction.

[0096] These series of putting movements are rotational movements with the center of rotation P being either the player's cervical or thoracic vertebrae, so the trajectory of the shaft and putter head is a pendulum motion trajectory (pendulum motion inclined to the vertical) with an inclined axis of rotation (diagonal line F).

[0097] The plurality of putter trajectory curves 22 on the layout sheet 2 are curves that reflect the rotation trajectory of the putter head specific to such a player. An example of the flow of setting the plurality of putter trajectory curves 22 on the putter mat A will be described later.

[0098] Moreover, the tangent point vertical line 23 is a line indicating a direction perpendicular to the second target line 20 at the position of the second alignment portion 21. The tangent point vertical line 23 is drawn as a straight line passing through the second alignment portion 21 in a direction perpendicular to the second target line 20.

[0099] Here, the second alignment portion 21 does not necessarily have to be formed as a circular hole penetrating the placement sheet 2 in the vertical direction, and its shape and formation method can be appropriately selected as long as it is possible to align it with the first alignment portion 12. However, it is preferable that the first alignment portion 12 is formed as a hole penetrating the main mat 1 in the vertical direction, because the first alignment portion 12 and the second alignment portion 21 can be aligned via a pin member (not shown) and the placement sheet 2 can be rotatably supported around the position of the second alignment portion 21.

[0100] In addition, the plurality of putter trajectory curves 22 do not necessarily have to be provided as five partially arc-shaped curves each having a different rotation radius, and the number of curves can be set appropriately. However, it is preferable to provide a plurality of putter trajectory curves 22 because it is easier to confirm the rotation trajectory of the putter head specific to the player. In addition, it is more preferable to provide five partially arc-shaped curves each having a different rotation radius, because the putter trajectory curves reflect five different rotation radii for the rotation trajectory of the putter head specific to the player, and it is possible to indicate a wide range of rotation radii on the arrangement sheet, and it is easier to fully respond to the difference in the rotation radii of the rotation trajectory of the putter head specific to the player in a plan view, which differs depending on the player's physique, posture at address, bending degree of elbow, etc.

[0101] Moreover, the arrangement sheet 2 does not necessarily have to be made of a transparent material. However, when the arrangement sheet 2 is placed on top of the main mat 1, the first target line 10 displayed on the main mat 1 becomes visible. As a result, it becomes easier to confirm the positional relationship between the first target line 10 and the multiple putter trajectory curves 22, and it becomes possible to practice putting motion while being conscious of not only the rotation trajectory of the putter head specific to the player but also the first target line, so it is preferable that the arrangement sheet 2 is made of a transparent material. Also, it is possible to adopt not only a transparent material but also a semi-transparent material.

[0102] Regarding the putter mat A composed of the main mat 1 and the placement sheet 2 described above, several examples of the placement of the placement sheet 2 will be described.

[0103] First, FIG. 2 shows a state in which the placement sheet 2 is placed straight on the main mat 1 with the first target line 11 and the second target line 20 aligned.

[0104] In this state, the arrangement sheet 2 is superimposed on the main mat 1 without tilting the orientation of the arrangement sheet 2 relative to the orientation of the main mat 1 in the longitudinal direction (lateral direction) of the main mat 1.

[0105] In the state shown in Figure 2, the first target line 11 and the second target line 20 overlap and form a single straight line. In the state shown in Figure 2, the player can repeatedly perform a putting motion without using a ball, thereby checking the rotational trajectory of the putter head specific to that player.

[0106] At this time, the player takes a stance so that the straight line connecting the positions of both shoulders at the time of addressing the ball for putting is parallel to the second target line 20 (first target line 11). Then, imagining a state in which a ball is placed on the ball placement section 10, the player performs a putting motion multiple times with the image of hitting the ball.

[0107] If the player is a professional or advanced player, the stroke trajectory of the putter head when viewed from above will become almost the same and stable trajectory after several putting movements. Even a beginner can see his or her own stroke trajectory of the putter head after 20 to 30 putting movements.

[0108] Then, the player compares the positional relationship between the stroke trajectory of his / her putter head and the five putter trajectory curves 22 on the layout sheet 2. That is, the player checks which of the five putter trajectory curves 22 with different rotation radii matches or is close to the stroke trajectory of his / her putter head. Or, the player may check that the midpoint of the two putter trajectory curves 22 is close to the stroke trajectory of his / her putter head.

[0109] In this way, by comparing the positional relationship between the five putter trajectory curves 22 on the layout sheet 2 and the stroke trajectory of the player's putter head, the player can determine a curve that serves as a guide for the stroke trajectory of the player's putter head, or a position between two curves.

[0110] This allows the player to repeatedly practice putting by using the determined putter trajectory curve 22 or a position between the two curves as a guide, while being conscious of the rotational trajectory and approximate rotation radius of his or her own putter head when putting.

[0111] That is, instead of pulling the putter head straight back and then pushing it straight out, it becomes possible to practice putting while being conscious of the rotational motion around the bone of either the cervical or thoracic vertebrae of the player as the center of rotation P. As a result, it becomes easier to acquire a natural stroke motion, and the success rate of putting can be increased.

[0112] When comparing the stroke trajectory of one's putter head with a plurality of putter trajectory curves 22, the comparison may be made based on any position of the toe side (left outer corner) of the putter face, the center (left center) of the putter face, or the heel side (left inner corner) of the putter face with respect to the putter trajectory curve 22. However, by comparing with the putter trajectory curve 22 based on the toe side of the putter face, one's putter head stroke trajectory is most easily seen.

[0113] [Using the placement sheet at an angle] Next, using Figures 3 and 4, we will explain the use of the placement sheet 2 inclined relative to the main mat 1. The putter mat A shown in Figures 3 and 4 is an example of how the putter mat A is used when a player who has a habit of impacting the ball with the putter face facing in an open or closed direction in a plan view with respect to the line connecting the ball and the cup is allowed to practice rolling the ball toward the cup while understanding the rotational trajectory of the putter head specific to the player.

[0114] First, as mentioned above, when the distance from the ball to the cup was set to about 1 m and the putting motion was performed multiple times, there was a tendency for some people to fail to get the ball into the cup and have the ball deviate to the right side of the cup more frequently, while others tend to have the ball deviate to the left side of the cup more frequently.

[0115] Here, a major factor for people who frequently hit the ball to the right of the cup is that when impacting the ball, the putter face is not oriented at a right angle (square) to the line connecting the cup and the ball in a plan view, and the toe side of the putter head is tilted in the opposite direction to the cup compared to the heel side, which is what is called an open putter face. If the ball is impacted with an open putter face, the ball will fly out based on the orientation of the putter face, and the ball that rolls will tend to miss the right side of the cup.

[0116] Conversely, for those who frequently hit the ball to the left of the cup, a major factor is that when impacting the ball, the orientation of the putter face is tilted toward the cup with the toe side of the putter head compared to the heel side, in other words, the putter face is closed. If the ball is impacted with a closed putter face, the ball will fly out based on the orientation of the putter face, and the ball that rolls will tend to miss the left side of the cup.

[0117] Also, even if a player has the habit of tilting the putter face open or closed at impact, and even if the putter face tilts at the moment of impact, the stroke trajectory of the putter head (the path the putter head moves before and after impact) will be a rotational trajectory with the player as the center of rotation.

[0118] Therefore, when the positioning sheet 2 is placed on the main mat 1 by aligning the positions 21 of the first alignment portion 12 and the second alignment portion, the orientation of the alignment sheet 2 is tilted relative to the orientation of the main mat 1 in accordance with the player's tendency to tilt the putter face at impact. This makes it possible to practice putting while taking into account the player's tendency to tilt the putter face and visually being aware of the player's unique rotational trajectory of the putter head.

[0119] For example, if a player has a tendency to have an open putter face at impact, the arrangement of the arrangement sheet 2 shown in FIG. 3 may be considered.

[0120] In Fig. 3, the first alignment section 12 and the second alignment section 21 are aligned, and the second alignment section 21 is used as the center of rotation, and the placement sheet 2 is placed by tilting the entire placement sheet 2 in a closed orientation (closed) with respect to the first target line 11 of the main mat 1. That is, in the paper space of Fig. 3, the placement sheet 2 is slightly tilted counterclockwise with respect to the main mat 1, and the entire placement sheet 2 is oriented downward to the left.

[0121] 3, when the arrangement sheet 2 is tilted, the second target line 20 is tilted with respect to the first target line 11 in a plan view, and the putter trajectory curve 22 is also tilted together with the second target line 20. In addition, in the portion of the second alignment section 21, a surface perpendicular to the putter trajectory curve in a plan view (corresponding to the vertical reference line 23) is in a closed orientation when assumed as the orientation of the putter face when impacting the ball.

[0122] Even when the placement sheet 2 is tilted, the player can swing while being aware of a line among the putter trajectory curves 22 that is close to the trajectory of his or her own putter stroke.

[0123] By being conscious of the putter trajectory curve 22, which is close to the trajectory of the player's putter stroke, the player will be conscious of the inclination (closing) of the plane perpendicular to the putter trajectory curve 22 at the second alignment portion 21 in a plan view when swinging, and even if the putter face tends to open at impact, it will be influenced by the inclination of the plane perpendicular to the putter trajectory curve 22. As a result, when the putter face actually hits the ball, the orientation of the putter face will approach an orientation perpendicular to the first target line, making it easier to impact the ball with that orientation of the face. As a result, the ball will be more likely to roll straight toward the cup.

[0124] In this way, the player can practice mastering a putting motion that makes the ball roll straight towards the cup, taking into account the player's tendency to open the putter face at impact.

[0125] Also, for example, if a player has a habit of keeping the putter face closed at impact, the arrangement of the arrangement sheet 2 shown in FIG. 4 may be considered.

[0126] In Fig. 4, the first alignment portion 12 and the second alignment portion 21 are aligned, and the second alignment portion 21 is used as the center of rotation, and the entire placement sheet 2 is tilted in an open orientation (open) relative to the first target line 11 of the main mat 1, and the placement sheet 2 is placed. That is, in the plane of Fig. 4, the placement sheet 2 is slightly tilted in the clockwise direction relative to the main mat 1, and the entire placement sheet 2 is oriented downward to the right.

[0127] 4, when the arrangement sheet 2 is tilted, the second target line 20 is tilted with respect to the first target line 11 in a plan view, and the putter trajectory curve 22 is also tilted together with the second target line 20. In addition, in the portion of the second alignment section 21, a surface perpendicular to the putter trajectory curve 22 in a plan view (corresponding to the vertical reference line 23) is in an open orientation (open) when assumed as the orientation of the putter face when impacting the ball.

[0128] Even when the placement sheet 2 is tilted, the player can still swing while being aware of a line among the putter trajectory curves 22 that is close to the trajectory of his or her own putter stroke.

[0129] By being conscious of the putter trajectory curve 22, which is close to the trajectory of the player's putter stroke, the player will be conscious of the inclination (open) of the surface perpendicular to the putter trajectory curve 22 at the second alignment portion 21 in a plan view when swinging, and even if the putter face tends to close at impact, it will be affected by the inclination of the surface perpendicular to the putter trajectory curve 22. As a result, when the ball is actually hit, the orientation of the putter face will also approach an orientation perpendicular to the first target line 11, making it easier to impact the ball with that orientation of the face. As a result, the ball will be more likely to roll straight toward the cup.

[0130] In this way, the player can practice mastering a putting motion that makes the ball roll straight towards the cup, taking into account the player's tendency to close the putter face at impact.

[0131] It should be noted that the inclination of the arrangement sheet 2 shown in FIGS. 3 and 4 is merely an example, and the degree of the inclination can be set appropriately in accordance with the inclination of the putter face at the time of impact.

[0132] In addition, if a player is able to make impact with the ball so that the putter face is perpendicular (square) to the line connecting the ball and the cup, he or she can practice putting by placing the placement sheet 2 straight on top of the main mat A as shown in Figure 2.

[0133] Next, the use of the first permissible marker 16 and the second permissible marker 17 will be described with reference to Fig. 2. By using the first permissible marker 16 and the second permissible marker 17 on the main mat 1, the success rate of putting within 1m from the cup can be increased.

[0134] Here, the putting action is performed with the image that the tangent to the rotational trajectory of the player's unique putter head at impact in a planar view, in other words, the stroke direction of the putter head at impact (the direction in which the putter head attempts to move at impact), falls within the range surrounded by the first target line 11 and the first tolerance marker 16.

[0135] At the same time, the putting action is performed while being conscious of the putter trajectory curve 22, which is a guide for the stroke trajectory of one's putter head. This means being conscious of the partial arc trajectory not only at the time of impact, but also throughout the sequence of the backward stroke, impact, and forward stroke.

[0136] If the stroke direction of the putter head at impact falls within the range enclosed by the first target line 11 and the first tolerance marker 16, and if the putter face surface at impact is oriented perpendicular (square) to the first target line 11 in a plan view, the hit ball will roll within the range enclosed by the first target line 11 and the second tolerance marker 17.

[0137] In other words, the ball can be rolled at an angle that will allow the ball to enter a cup within 1 m of the ball. By being aware of the first tolerance marker 16 while putting, the player can increase the success rate of putting the ball into a cup within 1 m of the ball.

[0138] In addition, the angle that the first permissible marker 16 makes with the first target line 11 is 5.61 degrees, and when the player visually confirms this angle, he or she can perceive it as being within a relatively reasonable angle range, enabling the player to perform the putting motion with a sense of security.

[0139] The detailed principle of using the first tolerance marker 16 and the tolerance marker 17 to put the ball into a cup within 1 m of the ball will be described later.

[0140] [Putter trajectory setting] Next, an example of the setting of the putter trajectory curve 22 on the putter mat A will be described.

[0141] As has been repeatedly stated so far, except for special putting movements, for most players, the trajectory of the putter head stroke will follow a rotational trajectory of the putter head specific to the player, with the player as the center of rotation.

[0142] For example, as shown in Figure 5, when a player is viewed from above and impacts a ball Q placed on the putter face E with the putter head to perform a putting motion, the trajectory of the putter head follows a curved line C that is a partial circular arc.

[0143] Also, an example of setting one of the multiple putter trajectory curves 22 will be shown.

[0144] As shown in Figure 6, when looking at the player's body from the side (left and right) at address for putting, the player's center of rotation P is the protuberance (7th cervical vertebra), and the distance from the center of rotation P to the center B of the bottom of the putter head is 150 cm. In other words, the length of the diagonal line F connecting the center of rotation P and the center B of the bottom of the putter head is 150 cm.

[0145] Also, when viewed from the center of rotation P, the position on the ground vertically below is position G, and the distance between position G and the center B of the bottom surface of the putter head is 40 cm. Furthermore, an angle indicated by the lie angle L occurs between the putter shaft S and the ground (see Figure 6). From this premise, find the distance H between the center of rotation P and position G. Note that distance H corresponds to the height of the player's vertebrae from the ground.

[0146] Based on the above premise, first, the angle α between the line connecting the rotation center P and position G, and the diagonal line F can be calculated using trigonometric functions as sinα = 40 / 150 ≒ 0.2677, α = 15.527 ≒ 15.5°, and the angle α can be approximated as 15.5°. Furthermore, the distance H can be calculated using trigonometric functions as H = cos(15.5) × 150 ≒ 0.09636 × 150, and from H = 144.54 ≒ 145, the value of H can be calculated as 145 cm.

[0147] Also, as shown in Figure 7, looking at the same player from the front, the position of the putter head at impact (0 cm position) and the position B2 of the putter head at a certain point on the trajectory of the forward stroke after impact are compared to calculate the height y (cm) of the putter head from the ground at position B2.

[0148] As shown in Figure 7, let us assume that the distance x from the impact position of the putter head (0 cm position) to the ground position on the extension of the diagonal line F (or the extension of the shaft S) at putter head position B2 is 25 cm. In other words, let us assume that the left-right distance x from the impact position to the ground position on the extension of the putter head at putter head position B2 is 25 cm.

[0149] Additionally, the distance between the center of rotation P and position G (corresponding to symbol H in FIG. 6) is 145 cm. In this case, the angle β between the line connecting the center of rotation P and position G and the diagonal line F can be calculated using trigonometric functions as tanβ = 25 / 145 ≒ 0.1724 and β = 9.781 ≒ 9.78°, so that the angle β can be approximated as 9.78°. Furthermore, the distance y can be calculated using trigonometric functions as y = 145 - {cos(9.78) × 145} ≒ 145 - (0.9854 × 145) and, from y = 2.117 ≒ 2.12, the value of y is calculated as 2.12 cm.

[0150] Then, as shown in Figure 8, when viewed from the side (left / right) of the player's body, the distance z (cm) along the lateral / intra-lateral direction between a position corresponding to position B2 of the putter head in Figure 7 and position B of the putter head at the time of impact is calculated.

[0151] In Figure 8, from the values ​​obtained so far, when the angle α is 15.5°, the height of the putter head from the ground at position B2 is y = 2.12 cm. Therefore, calculating the distance z using trigonometric functions, "tan15.5 = z / 2.12", gives "z = 0.2773 × 2.12", and since "z = 0.58787 ≒ 0.588", the value of z is calculated to be 0.588 cm.

[0152] Using the above procedure, for a player whose distance from the center of rotation P to the center B of the bottom of the putter head is 150 cm, the values ​​of "x, y, z" for a point on the stroke trajectory of that player's putter head are required to be "25 cm, 2.12 cm, 0.588 cm."

[0153] In addition, in the stroke trajectory of the player's putter head, the values ​​of y and z corresponding to different values ​​of x can be found by using x (cm) as a variable. As shown in Figure 9, by plotting the values ​​of x and z on the horizontal axis, with 0 cm as the origin O and the distance from the origin O as x (cm) and the vertical axis as the distance downward from the origin O (0 cm), z (mm), the plots shown by symbols I1 to I5 are obtained.

[0154] Then, by determining a curve approximating each of the plots I1 to I5 from a known graphics program, a partial arc-shaped curve C1 approximating each of the plots I1 to I5 can be drawn from the origin O. Furthermore, by flipping the curve C1 left and right with respect to a vertical line passing through the origin O, a partial arc-shaped curve C2 extending from the origin O can be drawn.

[0155] The curve formed by combining curves C1 and C2 is the curve of the rotational trajectory of the player's unique putter head, with the player as the center of rotation, in a planar view, for a player whose distance from the center of rotation P to the center B of the bottom of the putter head is 150 cm. The radius of rotation of this curve is the radius of rotation of the player's unique putter head in a planar view. If this radius of rotation is "R=273 cm," then this partial arc curve with a radius of rotation of R=273 cm can be adopted and displayed as one of the putter trajectory curves 22 on the layout sheet 2.

[0156] In the above manner, one of the putter trajectory curves 22 can be created. In addition, by drawing the curves C1 and C2 in the same manner from the putting movements of players with different rotation radii (R), different putter trajectory curves 22 can be obtained. By creating five of these, five putter trajectory curves 22 for the layout sheet 2 can be created.

[0157] [Other ways to draw putter trajectory curves] As a simpler method for setting the putter trajectory curve, the following putter trajectory curve drawing method can be adopted. Here, a reference point is set as the hypothetical position where the ball will be placed, and a target line is set as a straight line passing through the reference point, and the player is made to make a putter stroke along this target line, imagining that he or she is impacting the ball at the reference point.

[0158] Also, the position of one point on the trajectory of the putter stroke is determined, and an approximation curve (first curve) is drawn in a plan view that connects the determined position and the two reference points. Also, in a plan view, a second curve is drawn that is in a positional relationship that is linearly symmetrical to the first curve, based on an orthogonal line that passes through the reference point and intersects the target line at right angles. These first and second curves are partial arc curves, and the curve obtained by combining the first and second curves is the curve of the rotational trajectory of the player's unique putter head, with the player as the center of rotation, in a plan view. Also, the radius of rotation of this curve is the radius of rotation of the player's unique putter head.

[0159] In this way, based on the position of a single point on the trajectory of the putter stroke, it is possible to obtain in a simple manner the curve of the rotational trajectory of the putter head specific to that player.

[0160] In addition, according to this method, it is possible to create a putter mat specifically for a player using the obtained curve of the rotation path of the putter head specific to the player. Also, by periodically creating a curve of the rotation path of the putter head specific to the player and comparing the curves at different times, it is possible to use the information to analyze changes in putting motion and fluctuations in form.

[0161] [Setting the first and second tolerance markers] The setting of the first tolerance marker 16 and the second tolerance marker 17 will be described below. First, as a premise, the inventor has discovered the "1:3 law of angular directionality" and the "1:3 law of distance directionality" regarding the movement of the ball itself during putting.

[0162] Here, as shown in Figure 10, ball Q is placed, and four balls 1 to 4 are arranged at equal intervals about 50 cm away from ball Q (putting distance) in the vertical direction as seen in Figure 10. Ball 1 is also arranged in a straight line as seen from ball Q.

[0163] Then, ball Q is hit in the direction of stroke direction H1 of the putter head at impact with putter face E. The direction of putter face E at impact is perpendicular (square) to the line connecting ball Q and ball 1.

[0164] With this putting, the ball Q is hit and rolls in the direction of the symbol H2, and hits the ball 2.

[0165] From this phenomenon, if we assume that the direction of the line connecting ball Q and ball 1 is the line connecting the ball and the cup, the angle between the line connecting the ball and the cup and the stroke direction H1 of the putter head at impact and the angle between the line connecting the ball and the cup and the direction in which ball Q is hit (the direction indicated by the symbol H2) have a 1:3 relationship in terms of the magnitude of the angles. This is called the "1:3 law of angular directionality."

[0166] Also, as shown in Figure 10, in the direction of the four balls (vertical direction in Figure 10) based on the straight line connecting ball Q and ball 1, the distance L1 to the position of ball 2 where the shot ball Q hits, and the distance L3 to the position on the extension line of the stroke direction H1 of the putter head at the time of impact, have a 1:3 relationship in terms of distance. This is called the "1:3 law of distance directionality."

[0167] The "1:3 Law of Angular Directionality" and the "1:3 Law of Distance Directionality" are summarized in Figure 11. When ball Q is placed on line 100 connecting ball Q and the cup, putter face E is oriented perpendicular to line 100, and ball Q is hit with the stroke direction H1 of the putter head at impact, the hit ball Q rolls in the direction of H2. Also, the hit ball Q passes through the position of Q'.

[0168] In this movement of the ball during putting, the angle between line 100 and extension line 16a of the stroke direction H1 of the putter head at impact is 3θ, and the angle between line 100 and extension line 17a of the direction H2 in which the hit ball Q rolls is θ.

[0169] Further, in the direction perpendicular to the line 100, the distance L3 to the extension line 16a at the position corresponding to the ball Q' is three times the distance L1 to the position Q'.

[0170] In addition, in the putting stroke, the trajectory of the putter head in a planar view is a partial arc trajectory of curve C of the rotational trajectory of the putter head specific to the player.

[0171] Based on the "1:3 rule of angle directionality" and the "1:3 rule of distance directionality", the angles of 5.61 degrees and 1.87 degrees at the first tolerance marker 16 and the second tolerance marker 17 are set.

[0172] As shown in Figure 12, the radius of the actual cup K1 is 5.4 cm. The radius of the ball is 2.13 cm. Here, the distance between the ball Q and the cup K1 is 100 cm (1 m), and the line connecting the ball Q and the cup K1 is line 100.

[0173] In addition, in order to hit ball Q with putter face E at a right angle to line 100 and have it land in cup K1 100 cm away, the angle between the exit direction of ball Q and line 100 must be within 1.87 degrees due to the relationship between the diameter of the ball and the radius of cup K1.

[0174] Furthermore, based on the above-mentioned "1:3 rule of angular directionality" and "1:3 rule of distance directionality," in order to hit ball Q so that the angle with line 100 is within 1.87 degrees, the angle between the extension of the stroke direction of the putter head at the time of impact and line 100 needs to be within 5.61 degrees.

[0175] That is, the angle that the first permissible marker 16 on the main mat 1 makes with the first target line 11 is set based on 5.61 degrees, which is the angle between the extension line of the stroke direction of the putter head at impact and the line 100, as shown in Figure 12. Also, the angle that the second permissible marker 17 on the main mat 1 makes with the first target line 11 is set based on 1.87 degrees, which is the ball exit angle for the shot ball Q to enter the cup K1 100 cm away, as shown in Figure 12.

[0176] As shown in Figure 12, the player can imagine, for example, the following when putting. First, if a perpendicular line is drawn from the center position of the cup K1 on the line 100 to the extension of the stroke direction of the putter head at the time of impact, the distance between them is 9.8 cm. The difference between this distance of 9.8 cm and the radius of the cup K1 is 4.4 cm.

[0177] In other words, the extension line of the stroke direction of the putter head at the time of impact passes through a distance of another 4.4 cm outward from the outer periphery of the cup K1. If we consider the image cup K2 based on this, the radius of the cup K2 will be approximately 7.6 cm.

[0178] This is about 1.5 times the radius of the actual cup K1, and when putting, the player should imagine the cup K2 and stroke toward its left edge. In other words, by being aware of the first tolerance marker 16 on the main mat 1, it becomes possible to putt while imagining a cup that is larger than the actual cup.

[0179] Another example of a putter mat to which the present invention is applied is putter mat C shown in Figures 14 and 15. In putter mat C shown in Figure 14, placement sheet 2a is formed longer in its longitudinal direction than main mat 1. In placement sheet 2a, parts that perform the same function as placement sheet 2 are indicated by adding "a" to the reference numerals given to placement sheet 2, and detailed explanations are omitted.

[0180] In this long arrangement sheet 2a, five trajectory curves 22a are displayed longer than the putter trajectory curves 22 in the normal arrangement sheet 2. The trajectory curves 22a can be used not only to confirm the rotation trajectory of the putter head specific to the player, but also to confirm the rotation trajectory of the head specific to the player when swinging with a club other than a putter.

[0181] In other words, not only for putters but also for drivers, fairway woods, utilities, irons, and wedges, the stroke trajectory of the head of each club when impacting the ball will be a partial arc trajectory with the player as the center of rotation in a planar view, just like a putter, and will be a trajectory with a rotation radius specific to the player.

[0182] Therefore, by using the long layout sheet 2a shown in FIG. 14a and the multiple trajectory curves 22a displayed thereon, it is possible to grasp the player's specific head rotation trajectory of the head of other clubs that have a larger stroke trajectory than that of a putter.

[0183] Also, as shown in FIG. 15, similarly to the positioning sheet 2, by tilting the positioning sheet 2a with respect to the main mat 1 with the second alignment portion 21a as the center of rotation, it is possible for a player who has a habit of impacting with the face of the head in an open or closed orientation relative to the line connecting the ball and the target point to practice hitting the ball while understanding the player's unique head rotation trajectory.

[0184] The putter mat A described above allows the player to repeatedly practice putting by checking the rotational trajectory of the putter head specific to the player using the putter trajectory curve 22 on the layout sheet 2, while being conscious of the rotational movement of the putter head with the player as the center of rotation.

[0185] As described above, the putting mat to which the present invention is applied enables putting practice that increases the success rate of putting. Furthermore, the method of drawing a putter trajectory curve to which the present invention is applied contributes to putting practice that increases the success rate of putting.

[0186] The present invention has been described above in detail based on the embodiments. The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention. It goes without saying that it is Noh. [Explanation of symbols]

[0187] A Putting Mat 1 Main Mat 10 Ball placement section 11 First Goal Line 12 First alignment part 13 Distance Reference Line 14 Distance indicator line 15 Distance value 16 First Acceptable Marker 160 Third Acceptable Marker 17 Second Acceptable Marker 170 4th Acceptable Marker 18 Virtual Ball Section 2 Placement sheet 20 The second goal line 21 Second alignment part 22 Putter trajectory curve 23 Contact vertical line 100 lines P (Player) center of rotation S shaft L Lie angle F diagonal line F' Slope B (Bottom of putter head) Q Ball Q' Ball E Putter Face C (partial circular) curve K1 Cup K2 Image Cup C. Putting Mat 2a Placement sheet 20a Second Goal Line 21a Second alignment portion 22a Putter trajectory curve 23a Contact vertical line

Claims

1. A belt-shaped main mat, a first target line which is a straight line marked on the main mat along the longitudinal direction of the main mat; a ball placement portion which is a circular figure displayed on the main mat, the center of which is disposed at a position where the first target line passes, and which indicates a position where a ball is to be placed; a first alignment portion provided on the first target line of the main mat and adjacent to the ball placement portion; A strip-shaped arrangement sheet that can be placed on the main mat; A second target line which is a straight line displayed on the layout sheet along the longitudinal direction of the layout sheet; A second alignment portion is provided on the second target line of the placement sheet, and serves as a reference for aligning the position of the first alignment portion when the placement sheet is placed on the main mat, and serves as a rotation center when the placement sheet is tilted relative to the main mat; a putter trajectory curve that is a plurality of partially arcuate curves having different radii displayed on the arrangement sheet, each of which is tangent to the second target line at the position of the second alignment portion; Putting mat.

2. A pin member is inserted into the first alignment portion and the second alignment portion to allow the placement sheet to be rotatable relative to the main mat. The putter mat according to claim 1.

3. The putter trajectory curve is provided with five lines. The putter mat according to claim 1 or 2.

4. The main mat has a plurality of distance indication lines, which indicate distances at regular intervals based on the first alignment portion, displayed along the first target line. The putter mat according to claim 1 or 2.

5. The positioning sheet is formed of a transparent or semi-transparent material. The putter mat according to claim 1 or 2.

6. The main body mat is In a direction along the first target line, a first tolerance line that is a straight line passing through the first alignment portion and forms an angle of 5.61 degrees with the first target line; A second allowable line is a straight line passing through the first alignment portion, is provided between the first target line and the first allowable line, and forms an angle of 1.87 degrees with the first target line. The putter mat according to claim 1 or 2.

7. The main body mat is In a direction along the first target line, a third allowable line which is a straight line passing through the first alignment portion and has a positional relationship which is symmetrical to the first allowable line with respect to the first target line; A fourth allowable line is a straight line passing through the first alignment portion and is in a positional relationship symmetrical to the second allowable line with respect to the first target line. The putter mat according to claim 6.

8. A belt-shaped main mat, a first target line which is a straight line marked on the main mat along the longitudinal direction of the main mat; a ball placement portion which is a circular figure displayed on the main mat, the center of which is disposed at a position where the first target line passes, and which indicates a position where a ball is to be placed; a first alignment portion provided on the first target line of the main mat and adjacent to the ball placement portion; A strip-shaped arrangement sheet that can be placed on the main mat; A second target line which is a straight line displayed on the layout sheet along the longitudinal direction of the layout sheet; A second alignment portion is provided on the second target line of the placement sheet, and serves as a reference for aligning the position of the first alignment portion when the placement sheet is placed on the main mat, and serves as a rotation center when the placement sheet is tilted relative to the main mat; a putter trajectory curve which is a partial arc-shaped curve displayed on the arrangement sheet and which is tangent to the second target line at the position of the second alignment portion; Putting mat.

9. A belt-shaped main mat, a first target line which is a straight line marked on the main mat along the longitudinal direction of the main mat; a ball placement portion which is a circular figure displayed on the main mat, the center of which is disposed at a position where the first target line passes, and which indicates a position where a ball is to be placed; a first alignment portion provided on the first target line of the main mat and adjacent to the ball placement portion; A strip-shaped arrangement sheet that can be placed on the main mat; A second target line which is a straight line displayed on the layout sheet along the longitudinal direction of the layout sheet; A second alignment portion is provided on the second target line of the placement sheet, and serves as a reference for aligning the position of the first alignment portion when the placement sheet is placed on the main mat, and serves as a rotation center when the placement sheet is tilted relative to the main mat; a putter trajectory curve which is a plurality of partially arcuate curves displayed on the arrangement sheet, each of which is tangent to the second target line at the position of the second alignment portion, and which is a line simulating a predetermined pendulum motion trajectory which is a stroke trajectory of the putter head when the player is viewed from the side direction which is a direction connecting the ball and the cup. Putting mat.

10. The predetermined pendulum motion is a circular motion passing through a slope that forms an angle with the vertical direction when viewed from the side.

10. The putter mat of claim 9.

11. a position information acquisition step of displaying a reference point and a target line which is a straight line passing through the reference point, having a player perform a putter stroke along the target line with the reference point as a position for placing the ball, and acquiring position information of at least one point of the putter head on the trajectory of the stroke; a first curve drawing step of drawing a partial arc-shaped curve connecting the position of the position information acquired in the position information acquisition step and the reference point in a plan view; a second curve drawing step of drawing a partial arc-shaped curve that is symmetrical to the curve drawn in the first curve drawing step, based on an orthogonal line that passes through the reference point and is orthogonal to the target line in a plan view. How to draw a putter path curve.

Images