JP5540994B2 - Putter head - Google Patents

Description

  The present invention relates to a putter head of a golf putter, and more particularly to a putter head having a face insert attached to the face surface of a head body.

  A golf putter is a club used mainly for hitting a ball on a green and rolling the ball toward a cup. Japanese Patent Application Laid-Open No. 2007-117635 describes that a face insert is attached to the face surface of a putter head to soften the hit feeling.

JP2007-117635A

  An object of the present invention is to provide a putter head in which the top spin is reduced when the ball is hit as compared with a normal putter, and the back spin is easily applied to the ball.

Putter head according to claim 1, in putter head fitted with a face insert to the face surface of the head body, the said face insert is provided with a slit cut into the upper portion or the top to the bottom, the slit is, the more downward It is inclined so as to be behind the putter, and the depth of the slit is 60 to 95% of the height of the face insert .

  A putter head according to a second aspect of the present invention is the putter head according to the first aspect, wherein the slit extends from the left end to the right end of the face insert.

A putter head according to a third aspect of the present invention is the putter head according to the first or second aspect, wherein a concave portion is provided on the front surface of the head body, and the face insert is disposed in the concave portion. It is characterized in that there is an air gap between the peripheral surface .

  A putter head according to a fourth aspect is characterized in that, in any one of the first to third aspects, the slit is filled with a viscoelastic material.

  The face insert of the putter head according to the present invention is provided with a slit having a shape cut downward from the upper end. For this reason, when the ball is hit, the upper part of the face insert is retracted, the top spin is reduced, and the back spin is easily applied to the ball. When the putter head having such characteristics is a slightly rough green or a green with good rolling, the feeling of distance is easily adjusted due to poor rolling.

  This slit preferably extends from the left end to the right end of the face insert.

  By filling the slit with a viscoelastic material, it is possible to adjust the hitting sound and feel.

(A) is an exploded perspective view of a putter head according to the embodiment, (b) is a front view of this putter head, and (c) is a cross-sectional view taken along line CC in FIG. It is the II-II sectional view taken on the line of Fig.1 (a). It is sectional drawing of the face insert which removed the viscoelastic material. It is sectional drawing of the face insert of the putter head concerning another embodiment. FIG. 5 is a cross-sectional view of each face insert obtained by removing a viscoelastic material from the face insert of FIG. 4. It is sectional drawing of the putter head which concerns on different embodiment. (A) is a front view of a putter head according to a further different embodiment, and (b) is a cross-sectional view taken along line BB of (a). It is sectional drawing of the face insert of the putter head concerning another embodiment. It is sectional drawing of the face insert which removed the viscoelastic material in FIG.

  Hereinafter, embodiments will be described with reference to the drawings.

  1 to 2 show a putter head 1 according to a first embodiment. In the putter head 1, a recess 2H is provided on the front surface (face surface) of the head body 2, and a face insert 3 is disposed in the recess 2H. In this embodiment, the head main body 2 is made of a metal such as an aluminum alloy, a titanium alloy, a copper alloy, or stainless steel. The face insert 3 is made of a synthetic resin such as polyester, nylon, or urethane, or a metal such as an aluminum alloy, a copper alloy, or stainless steel. The front surface of the face insert 3 is flush with the front surface of the head body 2 around the recess 2H.

  The recess 2H and the face insert 3 have a horizontally long and substantially rectangular shape. The depth of the recess 2H is uniform as a whole, and the thickness of the face insert 3 is also uniform as a whole. However, a partially deep part and a thick part may be provided, or conversely, a shallow part and a thin part may be provided.

  The left and right widths and vertical widths of the face insert 3 are slightly smaller than the recesses 2H, and there is a slight gap 4 between the upper and lower side surfaces 3S of the face insert 3 and the peripheral surface 2S of the recesses 2H. Yes. The width of the gap 4 is preferably about 0.3 to 1.5 mm, particularly about 0.4 to 1.0 mm. The size of the face insert 3 is preferably 16 to 30 mm, particularly 18 to 25 mm in the vertical width, 50 to 150 mm, particularly 70 to 100 mm, and 2 to 10 mm, particularly 3 to 8 mm in thickness.

  As shown in FIGS. 2 and 3, the face insert 3 is provided with a slit 3a downward from the upper end portion, and the slit 3a is filled with a viscoelastic material 3b. As the viscoelastic material, rubber, elastomer, soft synthetic resin, or the like is used.

  In this embodiment, the slit 3a is inclined (forwardly inclined) so that the upper end thereof is located at the front end portion of the upper surface of the face insert 3 and the lower portion is rearward (rightward in FIGS. 2 and 3).

  The slit 3 a extends from the left end to the right end of the face insert 3. For this reason, the face insert 3 has a substantially U-shaped upward shape in which the front surface portion and the rear surface portion are continuous only at the lower portion of the face insert 3. The angle θ (FIG. 3) of the slit 3a is preferably about 0 ° to + 35 °, particularly about 0 ° to + 25 °. The depth of the slit 3a (the difference in height between the upper end and the bottom of the slit 3a) is preferably about 60 to 95%, particularly about 70 to 90% of the height of the face insert 3.

  The face insert 3 is disposed in the recess 2H so that the left side surface of FIG. 2 is the front face of the putter, and the opposite side is bonded to the back wall surface of the recess 2H with an adhesive. As the adhesive, an epoxy adhesive, a rubber adhesive, a double-sided tape, and the like are suitable, but not limited thereto.

  A putter is configured by connecting a shaft to the hosel portion 1h of the putter head 1 configured as described above. When putting with this putter (hitting the ball on the green with the face surface), the front side of the face insert 3 (the face side with respect to the slit 3a) slightly recedes when the ball is hit. As a result, the top spin of the ball is reduced and backspin is easily applied to the ball. Therefore, in the case of a slightly rough green or a green with good rolling, the feeling of distance can be easily adjusted due to poor rolling. That is, in general, a ball hit by a putter moves so as to slide on the green surface with no rotation or low rotation immediately after leaving the face surface of the putter, and after a while, the ball is caused by friction between the ball and the green surface. It rolls without sliding on the green (the peripheral speed of the ball is equal to the moving speed of the ball). When the force in the top spin direction applied to the ball at the time of the ball hit by the putter head decreases or the force in the back spin direction is applied to the ball at the time of the ball hit, the sliding movement distance of non-rotation or low rotation immediately after the above hit Becomes longer. If the green surface is rough, the impact of the ball from the green surface during the non-rotating or low-speed sliding movement immediately after this hit is reduced, and as a result, the total rolling distance until the ball stops is normal It is about the same as the case of green. In addition, in the case of a green with good rolling (specifically, a green whose grass has been cut short, or a green that has been tightened tightly with a roller, etc.), the ball rolls immediately after the ball hits and the top spin becomes weak or backspin. Is suppressed by the occurrence of As a result, the total rolling distance until the ball stops is equivalent to that in the case of normal green. For this reason, the putter head according to the present invention is easy to match the sense of distance with a slightly rough green or a green with good rolling, that is, the ball rolls by the distance intended by the player.

  In the present invention, as in the face inserts 11 to 13 in FIGS. 4 and 5, the inclinations of the slits 11a to 13a may be different from the above. 4 (a) and 5 (a), the forward tilt of the slit 11a is strong, and the upper end of the slit 11a faces the upper part of the face surface or the vicinity of the middle part in the vertical direction. In (b), the inclination of the slit 13 a is loose, and the upper end of the slit 13 a is located at the front of the upper end surface of the face insert 13. In (c), the slit 13a is substantially vertical.

  The slits 11a to 13a are filled with viscoelastic materials 11b to 13b. However, the face inserts 11 to 13 of FIGS. 5A to 5C in which the viscoelastic materials 11b to 13b are omitted may be attached to the head main body 2. In addition, when the viscoelastic material is filled in the slits 11a to 13a, it is possible to adjust the hitting sound and hit feeling when the ball is hit.

  In the above embodiment, the front surface of the face insert (in the case of the face insert 13 filled with the viscoelastic material 13b) is flat, but a plurality of horizontally long grooves may be provided in parallel. The width (vertical width) of the groove is preferably about 0.3 to 1.6 mm, and the depth of the groove is preferably about 0.05 to 1.1 mm.

  In FIG. 1, the gap 4 is formed around the face insert 3, but a viscoelastic material 8 such as rubber, elastomer, or synthetic resin may be provided in the gap as shown in FIG. Further, like the putter head 1 ′ in FIG. 7, the face insert 3 may be configured to fit into the recess 2 </ b> H so that the gap 4 does not occur.

  Other configurations in FIGS. 6 and 7 are the same as those in FIG. 1, and the same reference numerals denote the same parts. If the gap 4 or the viscoelastic material 8 is provided between the side surface 3S of the face insert 3 and the peripheral surface 2S of the recess 2H, no residual stress is generated in the face insert, and the rebound characteristics of the face insert are as designed. The effect of becoming is obtained.

  In the present invention, like the face insert 14 shown in FIGS. 8 and 9, the slit 14a filled with the viscoelastic material 14b may be tilted backward so as to be rearward as it is upward.

1, 1 'putter head 2 head main body 2H recess 3, 11-14 face insert 3a, 11a-14a slit 3b, 11b-14b viscoelastic material

Claims (4)

In a putter head with a face insert attached to the face surface of the head body,
The face insert is provided with a slit cut downward from the upper end or from above ,
The slit is inclined so as to be behind the putter as it goes downward,
The depth of the slit is 60 to 95% of the height of the face insert .   2. The putter head according to claim 1, wherein the slit extends from a left end to a right end of the face insert. In Claim 1 or 2, a concave portion is provided on the front surface of the head body, and the face insert is disposed in the concave portion,
A putter head characterized in that a gap is formed between the top, bottom, left and right side surfaces of the face insert and the peripheral surface of the recess .   4. The putter head according to claim 1, wherein the slit is filled with a viscoelastic material.

Images