JP4289101B2 - Putter head - Google Patents

Description

  The present invention relates to a putter head of a putter used for golf, and more particularly to a putter head excellent in shock absorption when hitting a golf ball during putting.

JP-A-2001-190721 discloses that a resin material such as urethane resin is provided on the face surface of the putter head in order to absorb the impact when the ball is hit with the putter head and enhance the hit feeling.
JP 2001-190721 A

  In the putter head disclosed in Japanese Patent Laid-Open No. 2001-190721, since the resin material is exposed on the face surface, the resin material is easily damaged and has poor durability.

  An object of the present invention is to provide a putter head that is excellent in impact absorption characteristics at the time of a ball hit and is also excellent in durability.

The putter head of the present invention comprises a front half body made of a low specific gravity metal and having a face as a front surface, a rear half body made of a high specific gravity metal and attached to the rear side of the front half body, and an interior of the front half body And a insert made of rubber or synthetic resin disposed along the face surface, wherein a recess is provided on the back surface of the front half, and the recess is formed on the front half. An inlet portion recessed from the back surface and a back portion smaller than the entrance portion provided on the back side of the entrance portion, and the insert is disposed in the back portion, and is less than the depth of the back portion. .5 to 2 mm larger and pressed by the latter half.

  In the putter head according to the present invention, the impact when the ball is hit is absorbed by the rubber or synthetic resin insert inside the front half.

  Since this insert is disposed along the face surface, it is easy to absorb an impact.

In the present invention, a recess is provided in the back of the front half, the insert is disposed in the recess, and the insert is pressed by the latter half, so that the insert is strongly pressed against the front half. Therefore, the impact generated in the front half is reliably transmitted to the insert and is sufficiently absorbed.

  In the present invention, the first half body extends in the toe-heel direction, the second half body is continuous from the toe side to the heel side of the front half body, and an outer peripheral rod-shaped body projecting to the rear of the first half body; The front half projects from the center in the toe-heel direction to the rear, and the rear end is connected to the central bar-like body, and the recess is formed at the front end of the central bar-like body. It is good also as a structure by which the cover body of the magnitude | size which fits in is provided, and this latter half body and the front half body are connected so that this cover body may press the said insert. According to this configuration, the moment of inertia around the center of gravity of the putter head is large, and the sweet area of the putter head is wide. Moreover, the insert is sufficiently pressed against the front half by the lid.

  In this case, the recess is formed between a relatively large entrance portion that is recessed from the back of the front half body, a relatively small back portion provided on the back side of the entrance portion, and the entrance portion and the back portion. Further, it is preferable that the step surface is substantially parallel to the face surface, the insert is disposed in the inner portion, and the lid body is in contact with the step surface. In this way, the lid body is disposed in the inner portion, and the lid body that presses the lid body abuts on the stepped surface, whereby the insert is shrunk at a predetermined ratio. As a result, the shock absorption characteristics as designed are surely exhibited.

  Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 is an exploded perspective view of a putter head according to an embodiment, FIG. 2 is a perspective view of the putter head, FIG. 3 is a bottom view of the putter head, and FIG. 4 is a sectional view taken along line IV-IV in FIG.

  The putter head 1 includes a front half 10 made of a low specific gravity metal material, a rear half 20 made of a high specific gravity metal material, and an insert 30 made of rubber or synthetic resin.

  The front half 10 has a substantially rectangular parallelepiped shape extending in the toe-heel direction connecting the toe (left end in FIG. 2) and the heel (right end in FIG. 2). The sole surface 10s of the front half 10 has an arc shape in which the center side in the toe / heel direction slightly bulges downward. The front surface of the front half 10 is a face surface 10a for hitting the ball.

  On the back surface of the front half body 10, a recess 11 is provided near the middle in the toe-heel direction. The recess 11 includes an entrance portion 11a, a back portion 11b recessed from the back side (face surface 10a side) of the entrance portion 11a toward the face surface 10a, and a boundary between the entrance portion 11a and the back portion 11b. And a step surface 11c formed in the portion. The inlet portion 11a has a cutout shape that extends in the toe-heel direction and opens toward the back surface and the bottom surface of the front half body 10. The back part 11b has a groove shape that is recessed from the face of the entrance part 11a on the face surface 10a side. This back part 11b extends in the toe-heel direction. The back part 11b is slightly smaller than the entrance part 11a, and a step surface 11c exists over the entire periphery of the back part 11b.

  Cutout portions 12 are provided on the back surfaces of the front half 10 in the toe and heel directions so as to open toward the sole surface 10s. An insertion hole 13 for a bolt 14 is formed so as to communicate the face surface 10a side of the notch 12 with the face surface 10a. The insertion hole 13 has a large-diameter portion on the face surface 10a side, a small-diameter portion on the back side, and a head portion of the bolt 14 is disposed in the large-diameter portion, as in an insertion hole 23a described later.

  A shaft insertion hole 15 is formed on the heel side of the upper surface of the front half body 10.

  The second half body 20 includes a semicircular arc-shaped outer peripheral rod-shaped body 21, a central rod-shaped body 22 that is continuous with the central portion in the extending direction of the outer peripheral rod-shaped body 21, and a tip surface of the central rod-shaped body 22. And a lid 23 attached by bolts 24. The bottom surface of the rear portion of the central bar 22 is an inclined surface 20a (FIG. 4) that is inclined upward toward the tail of the rear half 20.

  Both ends of the outer rod 21 are shaped and sized to fit into the notch 12, and female screw holes (not shown) that are coaxial with the insertion hole 13 are provided on both end surfaces. The front half body 10 and the rear half body 20 are connected by fitting both ends of the outer peripheral rod-shaped body 21 into the notch 12 and screwing the bolt 14 into the female screw hole.

  The lid body 23 is sized to fit into the inlet portion 11a. As shown in FIG. 4, a bolt 24 is screwed into a female screw hole 22 a provided in the distal end surface of the central rod-shaped body 22 through an insertion hole 23 a provided in the lid 23, so that the lid 23 is centered on the central rod-shaped body 22. It is fixed to.

The insert 30 has substantially the same vertical and horizontal dimensions as the back part 11b, but the thickness (the dimension in the head longitudinal direction) is 0 . 5~2m m and has a large Kiimono.

  To assemble the putter head, the insert 30 is inserted into the inner portion 11b, and then the rear half 20 with the lid 23 is combined with the front half 10 and the bolt 14 is screwed. As a result, both end surfaces 21 a of the outer peripheral bar 21 abut on the inner surface of the notch 12, and the lid 23 abuts on the step surface 11 c while pressing the insert 30. The insert 30 is in close contact with the entire inner periphery of the back portion 11b and the entire surface of the lid body 23 without a gap.

  A putter is completed by attaching a shaft to the putter head 1.

  Since the impact generated when the ball is hit using this putter is absorbed by the insert 30, the hit feeling becomes soft. The insert 30 is in close contact with the front half body 10 and the lid body 23 without a gap, and the distance between the insert 30 and the face surface 10a is small (preferably about 1 to 5 mm, particularly about 2 to 4 mm). Is fully absorbed.

  In this embodiment, since the high-specific gravity half body 20 has an arc shape, the sweet area of the putter head is wide, and the impact when the core is removed is small.

  Although the present invention is not particularly limited, the first half 10 is preferably made of aluminum, magnesium, titanium, or an alloy thereof having a specific gravity of about 2 to 5.

  The latter half 20 is preferably made of stainless steel, copper alloy, tungsten, tungsten alloy (for example, W—Cu alloy, W—Ni alloy) or the like having a specific gravity of about 7 to 14.

It is a disassembled perspective view of the putter head concerning an embodiment. It is a perspective view of the putter head of FIG. It is a bottom view of the putter head of FIG. It is the IV-IV sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Putter head 10 Front half body 11 Recess 11a Inlet part 11b Back part 11c Step surface 20 Late body 21 Outer periphery rod-shaped body 22 Central rod-shaped body 23 Lid body 30 Insert

Claims (5)

The first half body made of low specific gravity metal and the front face is a face,
The second half made of high specific gravity metal and attached to the rear side of the first half,
An insert made of rubber or a synthetic resin disposed along the face surface in the front half body;
A putter head comprising a,
A recess is provided in the back of the front half,
The recess is
An entrance recessed from the back of the front half;
Provided at the back side of the entrance part, and a back part smaller than the entrance part,
The putter head is characterized in that the insert is disposed in the inner portion, is larger by 0.5 to 2 mm than the depth of the inner portion, and is pressed by the latter half body. In claim 1 ,
The front half extends in the toe-heel direction,
The latter half is continuous from the toe side to the heel side of the front half, and an outer peripheral rod-like body having a shape protruding to the rear of the front half,
The front half projects from the center in the toe-heel direction to the rear, and a central rod-like body whose rear end is continuous with the outer circumferential rod-like body is integrated.
At the tip of the central rod-shaped body, a lid body of a size that fits into the recess is provided,
The putter head, wherein the latter half and the front half are connected so that the lid presses the insert. 3. The recess according to claim 2 , wherein the recess is
Consists of a said inlet portion, and said inner portion, which is formed between the inlet portion and the rear portion, substantially parallel step surface and the face surface,
The insert is located within the interior;
A putter head, wherein the lid is in contact with the stepped surface. In any one of claims 1 to 3, wherein a front half body of the specific gravity of 2-5, the putter head, wherein the specific gravity of the second half body is 7-15. In any one of claims 1 to 4, wherein the insert is a putter head is characterized by comprising a thermoplastic elastomer.

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