JP2022033545A - putter - Google Patents

Abstract

To provide a putter capable of stabilizing a striking-out direction of a ball by stabilizing an angle of a putter head even when a stroke of a nearly circular arc track is performed.SOLUTION: A putter comprises: a putter head 2; and a shaft 3 attached to a centroid 2o of the putter head 2 or near a heel side 2B via a curved part 3D curved to the heel side 2B of the putter head 2 in a linear part 3B extending from a base end 3A to a toe side 2A of the putter head 2, and a tip part 3C of the linear part 3B. The curved part 3D is curved to an extent by which a whole centroid 1o is biased to the heel side 2B from a shaft core of the linear part 3B of the shaft 3.SELECTED DRAWING: Figure 1

Description

The present invention relates to a putter.

Conventionally, there are an extremely large number of types of putters among golf clubs, and the stroke of the putter by the user also varies from person to person.

In general, a stroke using a putter is a pendulum that swings the putter from the shoulder centering on the back muscles without breaking the relationship between both hands and shoulders and without moving the wrist while firmly grasping the grip of the putter. It swings down like this.

In a commonly used putter, the center or center of gravity of the hitting point of the putter head is arranged on a coaxial line with respect to the extension line of the shaft, or the extension line of the shaft is the hitting point of the putter head. It is formed so as to be slightly offset from the center or the center of gravity to the heel side of the putter head and / or the front surface of the putter face. As a result, when the shaft of the putter is placed on a horizontal surface, the face of the putter head faces directly above (face balance) or diagonally upward to the extent that the toe side is slightly lower than the heel side (heel to balance or toe balance). Stand still.

The heel-to-balance or toe-balance putter is said to be suitable for users who make strokes with semi-arc or arc characteristics in which the face is swung down in a somewhat arc-like manner.

On the other hand, the face balance putter tends to stabilize the angle of the face, and when using this, take back as straight as possible, swing it down while keeping the same angle, and swing it with a straight stroke to hit the ball. By lowering it, it is possible to launch it straight forward relatively easily. For this reason, the user tries to swing to obtain a straight stroke by using a face-balanced putter.

However, in the above-mentioned basic swing of a putter, there arises a problem that it is inevitable that the trajectory of the putter swung down by the rotational motion will draw an arc to some extent no matter how much effort is put into it. For this reason, the face of the putter is slightly open before the hitting point of the ball, and slightly covered after the hitting point.

7A and 7B are plan views showing the relationship between the stroke using the conventional putter 90, the hitting point of the ball 91, and the launching directions 92A to 92C, and FIG. 7A is a diagram illustrating an operation at the correct hitting point, and FIG. ) Is a diagram for explaining the operation when the hitting point is early, and (C) is a diagram for explaining the operation which occurs when the hitting point is late.

As shown in FIG. 7, the user 93 makes a stroke from the shoulder around the spine while keeping the angle between the arms 93L and 93R and the shaft 90A of the putter 90 constant, so that the trajectory 90R of the putter 90 is changed. It draws an arc. Therefore, as shown in FIG. 7A, when the putter 90 hits the ball 91 at the correct hitting point, the face 90F is oriented in the normal direction as shown in the launch direction 92A, so that the ball 91 is hit. It is possible to launch straight forward.

However, as shown in FIGS. 7 (B) and 7 (C), when the hitting point at which the putter 90 contacts the ball 91 is earlier (right side in the figure) or later (left side in the figure) than the reference position. Since the face 90F of the putter head at the time when the ball 91 comes into contact with the ball 91 is tilted by angles α1 and α2 from the direction perpendicular to the regular launch direction 92A, the launch directions 92B and 92B of the ball 91 are the regular launch directions 92B and 92B. It is not possible to go in the direction 92A, which is a so-called "pushed state" or "hooked state", and there arises a problem that the ball 91 cannot be hit in the intended direction.

In addition, it is known that the position of the putter that hits the ball also affects the launching direction of the ball. That is, since the center of gravity of the putter head is in the center, the true core (sweet spot) that hits the putter head with the ball is also almost in the center, but the more the ball deviates from the sweet spot, the different the direction of the putter. There is a problem that the ball is launched in the direction. Therefore, a putter has been developed that can be launched in the direction of the putter head if the putter can enter a certain area (inside the sweet area) even if the putter is out of the sweet spot.

In Patent Document 1, the mounting position of the shaft is provided on the toe side from the center of the head, and the weight adjustment piece is provided on the heel side. Therefore, even when the sweet area of the head is removed and the ball is hit near the heel, the face surface It is stated that the sweet area is expanded to the heel side by making it difficult to tilt.

Japanese Unexamined Patent Publication No. 2016-140719

However, none of the above putters has been able to cope with the change in the angle of the face caused by the movement of the arc orbit that appears at least to some extent in the movement of the putter head during the stroke. For this reason, although there are individual differences in conventional putters, there is a possibility that at least an error in the face and launch direction will occur, which creates an extruded state or a hooked state, causing a situation in which the ball does not move straight. was there.

In addition, if the weight of the putter head is changed by attaching a weight adjustment piece as in Patent Document 1, the weight balance of the entire putter is lost, which not only makes it difficult to adjust the stroke timing, but also holds the putter naturally. There is a concern that the face at the center will be directed outward due to the influence of the weight adjustment piece.

The present invention has been made in consideration of the above-mentioned matters, and provides a putter capable of stabilizing the angle of the putter head and stabilizing the launching direction of the ball even when a stroke of a substantially arc trajectory is performed. The purpose is.

In order to solve the above problems, the present invention provides a putter head, a straight portion extending from the base end toward the toe side of the putter head, and a curved portion curved toward the heel side of the putter head at the tip portion of the straight portion. The putter is provided with a shaft attached to the center of gravity of the putter head or near the heel, and the curved portion is curved so that the entire center of gravity is biased toward the heel side from the axis of the straight portion of the straight portion of the shaft. I will provide a. (Claim 1)

The putter head has a sweet spot that is most suitable for hitting a ball in the face, and this sweet spot is a portion that passes through the center of gravity of the putter head and corresponds to an intersection of a straight line perpendicular to the face and the face.

The shaft is provided with a straight portion extending toward the toe side of the putter head, and is attached to the center of gravity of the putter head or near the heel via a curved portion at the tip portion, and is heeled from the axis of the straight portion of the shaft. Since the center of gravity of the entire putter is on the side, the user unknowingly pays attention to the curved part of the putter and the putter head when holding the shaft of this putter and suspends the putter head from the curved part. You can hold it in the same image and make a stroke.

Further, since the position of the putter head with respect to the shaft is formed so that the center of gravity is biased (offset) toward the heel side from the axis of the shaft, the swing of the pendulum trajectory around the shaft is natural in the curved portion. Will happen to. This pendulum trajectory is an orbit that draws an arc that swells downward (toward the front) when viewed from the user around the shaft.

On the other hand, the user bends the shaft by swinging the putter from the shoulder around the back muscle like a pendulum without breaking the relationship between the hands holding the grip of the putter and the shoulders and without moving the wrist. The part moves in a stroke trajectory that rotates around the back muscle of the user. Since this stroke trajectory appears diagonally forward from the user's standing position, it is a trajectory that draws an arc that swells forward (that is, upward when viewed from the user) around the user's standing position.

Therefore, by canceling the pendulum trajectory and the stroke trajectory with each other, the face of the putter head is always stabilized in a direction substantially perpendicular to the traveling direction, and a substantially straight stroke can be performed. Since the connection part between the shaft and the head is closer to the center of gravity or the heel of the head like a normal putter, the force from the shaft is transmitted to the putter head from the connection part near the center of gravity or the heel of the head. It is possible to hit the ball with the established balance of the putter head, and it is possible to hit the ball in the direction desired by the user and with the desired strength.

The distance (offset) between the straight part of the shaft and the center of gravity of the putter head varies slightly depending on the user's body shape and the stroke trajectory where the user's swing habit appears, but by forming an offset of 30 mm or more, It is good for suppressing the fluctuation of the face due to the stroke trajectory due to the pendulum trajectory.

Further, since the speed of the natural vibration of the swing that produces the pendulum trajectory is formed according to the speed of the stroke of the putter by the user, the fluctuation of the face angle due to the swing of the pendulum trajectory and the stroke trajectory is further increased. It is possible to make sure that they are offset.

The face of the putter head is arranged so as to pass through the center of gravity of the entire putter and to be substantially parallel to the vertical line of the straight portion of the shaft, and the putter head is a suite of the putter head substantially vertically from the curved portion of the shaft at the hitting point. When the spot is arranged (claim 2), when the user holds the putter, the weight of the putter head causes the face to face in a direction substantially perpendicular to the traveling direction of the ball. At the time of holding, the user decides the launch direction of the ball and it becomes cheaper.

In addition, when the user strokes the putter while being aware of the curved part, the putter head suspended from the curved part is swung down with the image of hitting the ball, so that the weight balance is good and accurate and stable putting is achieved. It will be possible to do.

When the putter head is a mallet type or a neo-mallet type (claim 3), the shape of the putter head itself has an effect of stabilizing the angle of the face, so that the ball is launched in the target direction more accurately. It becomes possible.

As described above, according to the present invention, it is possible to bring the arc trajectory of the head during the stroke closer to the straight trajectory, and the user can hit the ball in the desired direction without overdoing it. can.

It is a perspective view which shows the structure of the putter which concerns on embodiment of this invention. It is a side view which shows the structure of the putter. It is a figure which shows the characteristic of the said putter. It is a figure which shows the state which held the putter. It is a figure explaining the pendulum trajectory of the putter head of the putter. It is a figure which shows the operation of the putter head at the time of a stroke. It is a figure explaining the operation of the conventional putter.

Hereinafter, the configuration and operation of the putter according to the embodiment of the present invention will be described with reference to FIGS. 1 to 6. 1 to 3 show a detailed configuration of the putter 1, FIG. 1 is a perspective view, FIG. 2 is a side view, and FIG. 3 is a perspective view seen from another angle.

As shown in FIGS. 1 to 3, the putter 1 of the present invention includes a mallet type putter head 2, a straight line portion 3B extending from the base end 3A toward the toe side 2A of the putter head 2, and the straight line portion 3B. A shaft 3 attached to the tip portion 3C closer to the heel 2B from the center of gravity 2o of the putter head 2 via a curved portion 3D curved toward the heel side 2B of the putter head 2, and a grip 4 attached to the base end 3A of the shaft 3. And prepare. The curved portion 3D is curved so that the entire center of gravity 1o is biased toward the heel 2B side from the axis of the straight portion 3B of the shaft 3.

The mallet type putter head 2 includes a bottom surface portion 2C, thick portions 2D and 2E provided at the toe side 2A and heel side 2B ends of the bottom surface portion 2C, and a face 2F connected thereto. The shape of the bottom surface portion 2C is a so-called semi-cylindrical shape. That is, the shape is such that it bulges rearward in a fan shape from the straight line portion connected to the face 2F. Since the mallet type putter head 2 can arrange the center of gravity 2o of the putter head 2 behind the face 2F, it is said that the movement direction of the putter head 2 at the time of a stroke can be easily linearly performed. There is.

The shaft 3 is a substantially pipe-shaped rod body configured to gradually taper from its base end 3A toward the tip end 3B, and from the base end 3A to which the grip 4 is attached to the front of the curved portion 3D. It is a straight portion 3B and faces the toe side 2A of the putter head 2 straight. In the present embodiment, the curved portion 3D of the shaft 3 is formed by bending the shaft 3, but it goes without saying that the curved portion may be formed by using a neck member connected to the straight portion 3B. In that case, the curved portion 3D may be not only a bent portion but also a bent portion.

As shown in FIG. 3, when the straight portion 3B of the shaft 3 is placed on a horizontal table, the putter 1 of the present embodiment stands still at an angle where the center of gravity 1o comes directly under the straight portion 3B of the shaft 3, and is at a right angle to the face 2F. The balance is adjusted so that the direction X is stationary so as to face substantially to the side. The putter 1 configured as described above is configured so that the direction of the face 2F can be easily aligned with the traveling direction of the ball while the user is holding the putter 1.

FIG. 4 is a diagram showing a state in which a stance is held by using the putter 1 having the above configuration. As shown in FIG. 4, in order to hit the ball 6 on the ground surface 5 on the green, when the user 7 holds the putter 1, the lower surface of the putter head 2 is held parallel to the ground surface 5. At this time, the shaft 3B forms an acute angle θ of 90 ° or less with respect to the ground surface 5.

At this time, the center of gravity 2o of the putter head 2 with respect to the shaft 3B is arranged at a position offset downward by the offset Of with respect to the extension line of the shaft 3B, and the center of gravity 1o of the entire putter 1 is also offset downward from the center of the shaft 3B. It is formed by shifting it to a position. Therefore, when the user holds the stance of the putter 1, the putter head 2 is slightly lifted from the ground surface 5, so that the putter head 2 is at a position where the face 2F faces the direction in which the ball 6 is to be launched due to its own weight. Stand still. Further, in the case of this example, the sweet spot of the putter head 2 (that is, the intersection with the vertical line of the face 2F passing through the center of gravity 2o) is arranged substantially vertically from the position of the curved portion 3D.

The user 7 confirms the positional relationship between the ball 6 and the putter head 2 while holding the stance of the putter 1. At this time, not only the position of the putter head 2 but also the curved portion 3D is located substantially directly above the putter head 2 in the eyes of the user 7, and the putter head 2 is just suspended from the curved portion 3D. You can feel that you are in a state. In addition, the user 7 can confirm that the putter head 2 swings like a pendulum around the straight portion 3B of the shaft 3 when the putter 1 is backswinged.

FIG. 5 is a diagram illustrating a pendulum trajectory of a putter head. As shown by the double-headed arrow Y in FIG. 5, the putter head 2 swings the pendulum trajectory around the straight portion 3B of the shaft 3. The pendulum trajectory Y at this time draws an arc that is convex backward (lower side) when viewed from the user 7, and the angle of the face 2F also changes accordingly. It is preferable that the cycle of the natural vibration of the swing of the pendulum trajectory Y is adjusted so as to match the cycle of the stroke of the putter by the user.

FIG. 6 is a diagram showing a composite of the pendulum trajectory and the stroke trajectory of the putter head at the time of stroke. As shown by the alternate long and short dash line Z in FIG. 6, when the user 7 swings down the putter 1, the stroke trajectory Z of the putter head 2 becomes an arc (arc trajectory) at least to some extent, and is forward (upper side) when viewed from the user 7. ) Draws a convex arc. At this time, the angle of the shaft 3B moving on the stroke trajectory Z and the angle of the face 2F also fluctuate according to the angle of drawing the arc.

However, since the pendulum trajectory Y also occurs at the same time as the stroke trajectory Z, the angle of the face 2F also fluctuates accordingly, and the fluctuation of the face 2F due to the stroke trajectory Z is offset by the fluctuation of the face 2F due to the pendulum trajectory Y. The angle of the face 2F can be approached to a straight trajectory without changing from the beginning to the end of the stroke. That is, the launch direction of the ball 6 can be stabilized.

In the case of this embodiment, the shape of the putter head 2 is basically a mallet type. Therefore, it is possible to stabilize the direction of the face 2F and the launch direction of the ball 6 as a function of the putter head 2 alone.

When the user 7 holds the putter 1, he / she can unknowingly pay attention to the curved portion 3D of the shaft 3 to make a stroke, and the putter head 2 suspended from the curved portion 3D can be used like a pendulum. Since the feeling of swinging down can be easily grasped, it becomes easy to imagine a pendulum movement that always directs the face 2F in the same direction during a stroke, which affects the usability of the putter 1.

Further, since the shaft 3 is attached to the putter head 2 slightly closer to the heel 2B than the center of gravity 2o of the putter head 2, it moves in an arcuate stroke trajectory Z, and at least centrifugal force is applied to the upper part of the drawing. The putter head 2 has a good balance when hitting the ball 6, and even when the contact portion with the ball 6 deviates from the sweet spot, the ball 6 can be launched straight.

As described above, by using the putter 1 of the present embodiment, the angle of the face 2F of the putter head 2 is close to a straight trajectory that is always constant even for the user 7 who makes at least some arcuate strokes. Since the stroke can be easily performed, the launch direction of the ball 6 can be surely adjusted accordingly.

In the above-described embodiment, the putter head 2 is a mallet type to further enhance the stability in the launch direction, but the present invention is not limited to the mallet type in the basic shape of the putter head 2, and is neo. It may be a mallet type or a pin type.

Since the offset Of of the center of gravity 2o of the putter head 2 with respect to the shaft 3B is at least 30 mm or more, it is possible to correct the angle of the face 2F by swinging the pendulum movement, but the magnitude of this offset Of is large. Needless to say, it may be adjusted according to the height of the user 7, the swing habit of the user 7, the length of the shaft 3, and the weight and shape of the putter head 2.

Similarly, in the present embodiment, the tip portion 3C of the shaft 3 is attached to the heel side of the center of gravity 2o of the putter head 2, but it is also possible to attach this to the position of the center of gravity 2o. In this case, the shaft is attached to the shaft. By applying the transmitted force to the center of gravity 2o portion of the putter head 2 from substantially directly above, it is possible to prevent the face 2F from shaking.

1 putter 1o center of gravity of putter 2 putter head 2A toe side 2B heel side 2o center of gravity of putter head 3 shaft 3A base end 3B straight part 3C tip part 3D curved part

Claims (3)

With a putter head
A straight portion extending from the base end toward the toe side of the putter head and a shaft attached to the center of gravity of the putter head or near the heel via a curved portion curved toward the heel side of the putter head at the tip portion of this straight portion. Prepare,
The curved portion is a putter characterized in that the entire center of gravity is curved to the extent that it is biased toward the heel side from the axis of the straight portion of the shaft. The face of the putter head is arranged so as to pass through the center of gravity of the entire putter and to be substantially parallel to the vertical line of the straight portion of the shaft, and the putter head is a suite of the putter head substantially vertically from the curved portion of the shaft at the hitting point. The putter according to claim 1, wherein the spot is arranged. The putter according to claim 1 or 2, wherein the putter head is a mallet type or a neomallet type.

Images