JPH0716534B2 - Golf club - Google Patents

Description

FIELD OF THE INVENTION The present invention relates to golf clubs.

2. Description of the Related Art Conventionally, an impact absorbing golf club is provided in which an independent movable object is installed inside a hollow head, and the movable object is backed up by a spring and comes into contact with the back surface of the face to absorb an impact applied to the face. Proposed as -131788.

By the way, when a ball is hit by a golf club, if the hitting portion is on the line of intersection between the vertical surface and the hitting surface that pass through the center of gravity of the club head and are orthogonal to the hitting surface, the club head can be hit accurately without receiving rotational force. .

On the other hand, the more the ball hitting the ball passes through the center of gravity of the club head and deviates from the line of intersection between the vertical plane orthogonal to the ball hitting surface and the ball hitting surface, the more the club head deviates from the target direction, the more rotational force the ball hits. It will be.

For inexperienced players, it is difficult to hit at a so-called sweet spot near the line of intersection between the hitting surface and the vertical plane orthogonal to the hitting surface through the center of gravity. Although it is desirable to add it, in the above-mentioned conventional golf club, the movable object is in contact with the back surface of the face in advance, and since it moves to the vertical plane immediately after the ball is hit, the rotation of the club head cannot be suppressed. Of.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The present invention minimizes the rotational force generated in the club head even when the hitting ball portion deviates from the line of intersection between the hitting surface and the vertical plane that passes through the center of gravity of the club head and is orthogonal to the hitting surface. However, it is an object of the present invention to provide a golf club capable of reducing the deviation of the hit ball from the target.

Means for Solving the Problems In a golf club of the present invention, a weight is passed through a center of gravity of the club head inside the hollow club head at a position apart from the back surface of the ball striking surface of the club head. Movably supported non-axisymmetrically with respect to the support axis of the vertical support through a single vertical support having a support axis of a predetermined length in a vertical plane perpendicular to Then, a biasing means for biasing the weight to a position symmetrical about the vertical plane is provided.

Action At the time of hitting a ball, if the hitting portion deviates from the line of intersection between the vertical surface that passes through the center of gravity of the club head and is orthogonal to the hitting surface, and the hitting surface generates a moment that the club head tries to rotate around the hitting portion. Since the weight inside the hollow club head tries to maintain the position before hitting the ball, it moves relatively to the position which is not symmetrical with respect to the vertical plane against the biasing means, and as a result, the moment And a moment in the opposite direction acts to prevent the club head from rotating.

Embodiment FIG. 1 and FIG. 2 show an embodiment, in which a ball is hit inside the hollow club head 1 at a position away from the back surface of the ball striking face 2 and through the center of gravity G of the club head 1 to hit the ball striking face 2. The weight 3 is provided symmetrically with respect to the vertical plane P at right angles.

The weight 3 is non-axisymmetric with respect to the support axis line of the vertical support portion 4 with respect to the vertical plane P via a single vertical support portion 4 along a line of intersection between the vertical plane P and the back surface of the ball striking face 2. It is movably supported.

That is, the weight 3 is fixed to one end of an urging means composed of a leaf spring 5 that urges the weight 3 toward a position symmetrical with respect to the vertical plane P, and the vertical width of the leaf spring 5 is set to a predetermined length. Is fixed to the back surface of the ball striking face 2 of the club head 1 with the other end as a vertical support portion 4 and is supported movably inside the club head 1 across a vertical plane P.

When the ball 6 is hit with the golf club according to this embodiment, as shown in FIG. 3, when the hitting portion 7 deviates from the line of intersection between the vertical plane P passing through the center of gravity G of the club head 1 and the hitting surface 2,
The club head 1 generates a moment to rotate clockwise about the hitting portion 7.

However, since the weight 3 inside the club head 1 tries to maintain the position before hitting, it moves relatively to the hitting portion 7 side across the vertical plane P against the leaf spring 5, and as a result, A moment opposite to the moment is generated to prevent the club head 1 from rotating about the hitting portion 7.

FIG. 4 shows another embodiment. Inside the hollow club head 1, at a position away from the back surface of the ball striking face 2, the vertical plane P perpendicular to the ball striking face 2 through the center of gravity G of the club head 1. A weight 3 which is plane-symmetric with respect to, and is pivotally supported by a vertical support portion composed of a single pin 4a having a support axis of a predetermined length in a vertical plane P, that is, movably supported across the vertical plane P. Is.

The weight 3 is supported non-axisymmetrically with respect to the axis of the pin 4a, and the weight 3 has a sharp projection 31 on the ball striking face 2 side and an enlarged portion 32 on the opposite side.

The sharp protrusion 31 of the weight 3 has a notch 91 in the biasing member 9 rotatably supported by an elastic vertical shaft 8 having an axis in the vertical plane.
The biasing member 9 is biased to bias the weight 3 to a plane symmetrical position with respect to the vertical plane P by tightly engaging the notch 91 with the sharp projection 31 of the weight 3. To form.

When the ball 6 is hit with the golf club according to this embodiment, as shown in FIG. 5, when the hitting portion 7 deviates from the line of intersection between the vertical plane P passing through the center of gravity G of the club head 1 and the hitting surface 2, the club is hit. The head 1 tries to rotate clockwise with respect to the hitting portion 7.

However, it is supported non-axisymmetrically with respect to the axis of the pin 4a in the vertical plane P inside the hollow club head 1 and is plane-symmetrical with respect to the vertical plane P perpendicular to the ball striking face 2 through the center of gravity G of the club head 1. The weight 3 moves counterclockwise around the pin 4a against the bias of the biasing body 9 which tries to insert and hold the sharp protrusion of the weight 3 into the notch 91 of the biasing body 9, The club head 1 is prevented from rotating around the hitting portion 7.

At this time, the elastic vertical shaft 8 elastically deforms temporarily, and then returns to the original position, whereby the biasing body 9 and the weight 3 also return to the original position shown in FIG.

FIG. 6 shows a modified example of the biasing body 9 and the weight 3 of the embodiment shown in FIGS. 4 and 5, in which the biasing body 9 is provided with a sharp projection 92 and is attached to the weight 3. It is closely fitted to the notch 92 provided, and the enlarged portion 32 of the weight 3 is formed into a planar fan shape.

The operation is the same as that shown in FIGS. 4 and 5, and the description thereof will be omitted.

EFFECTS OF THE INVENTION According to the present invention, when hitting a ball, the hitting portion deviates from the line of intersection between the hitting surface and the vertical plane that passes through the center of gravity of the club head and is orthogonal to the hitting surface, and the moment that attempts to rotate the club head about the hitting portion is generated. Even when working, at the same time, the weight inside the hollow club head moves against the biasing means across the vertical plane to the side of the hitting ball, and as a result, the club head rotates in the opposite direction from the moment of attempting to rotate. Prevents the club head from trying to rotate around the hitting portion and prevents the hitting ball from falling off the target.

[Brief description of drawings]

FIG. 1 is a plan sectional view of an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of an essential portion of the same, FIG. 3 is a plan sectional view of a ball hitting the same, and FIG. 4 is another sectional view of the present invention. FIG. 5 is a plan sectional view of the embodiment, FIG. 5 is a plan sectional view of the ball shown in FIG. 4 at the time of hitting, and FIG. 6 is a perspective view of a main portion of still another embodiment. DESCRIPTION OF SYMBOLS 1 ... Club head, 2 ... Hitting surface, 3 ... Weight, 4 ... Vertical support part, 5 ... Leaf spring (biasing means), 6 ... Ball, 7 ... Hitting part, 8 ... Pin, 9 ... Biasing body ( Urging means), 31 ... pointed portion,
32 ... Enlarged part, 33 ... Notched part, 91 ... Notched part, 92 ... Sharp part, G
… Center of gravity, P… Vertical plane.

Claims (1)

[Claims] 1. A predetermined weight is provided inside a hollow club head, at a position away from the back surface of a ball striking face of the club head, in a vertical plane perpendicular to the ball striking face through the center of gravity of the club head. Via a single vertical support having a support axis of length axisymmetrically with respect to the support axis of the vertical support and movably across the vertical plane, and the weight is supported on the vertical plane. A golf club, characterized in that it is provided with a biasing means for biasing a position symmetrical with respect to.