JP4494916B2 - Golf club head - Google Patents

Description

  The present invention relates to a golf club head equipped with a weight body (weight member) for adjusting the head balance.

In recent years, golf clubs called wood are made of hollow metal in which outer shell components such as a top portion (crown portion), a side portion, and a sole portion are formed of a metal material such as stainless steel, titanium, or titanium alloy. Golf club heads (hereinafter referred to as “heads”) are widely used.
Conventionally, in this type of head, the head balance such as the position of the center of gravity and the moment of inertia is set by weight distribution, but there is a limit in setting the head balance by partially changing the thickness of the head body. Therefore, in recent years, the head balance is adjusted by attaching a weight body to the head body. As a heavy body mounting structure, there are known screw mounting and welding mounting structures, but since the head body has become thinner with the recent increase in the size and weight of the head, mounting of the heavy body by screwing However, there is a possibility that the strength of the head is lowered by making a screw hole in the head main body, and that the screw fixing portion is loosened due to impact at the time of hitting the ball for a long period of time, thereby causing looseness of the weight body.

Further, in attaching heavy bodies by welding, it has been pointed out that there is a problem that looseness of the weight body occurs due to strength reduction due to poor welding.
Therefore, in Patent Document 1, in place of a heavy body mounting structure by screwing or welding, as shown in FIGS. 9 to 11, the metal head body 1 made of a hollow outer shell body is inwardly facing toward the toe side. Is provided with the cylindrical receiving portion 3 integrally with the head main body 1, and a cylindrical weight body 5 having a higher specific gravity than the head main body 1 is inserted into the receiving portion 3.

Thus, according to this mounting structure, it is possible to fix the weight body 5 to the head body 1 without backlash compared to the mounting structure by screwing or welding.
Further, in Patent Document 2, as shown in FIG. 12 and FIG. 13, inward cylindrical shapes are formed at the center positions on the toe side, the heel side, and the back side of the side portion 11 of the hollow metal head body 9, respectively. There is disclosed a head 21 that is provided with receiving portions 13, 15, 17, and in which cylindrical weight bodies (copper pillars) 19 can be inserted into the receiving portions 13, 15, 17. For example, the head balance can be appropriately changed and set by changing the mounting position of the weight body 19.
JP 2001-276287 A Japanese Utility Model Publication No. 5-172

  Thus, in the hollow metal head described above, the outer shell constituent members, that is, the face portion, the top portion, the sole portion, the side portion, and the like vibrate at the time of hitting and a hitting sound is generated. As described above, since the head, the top, the sole, the side, and the like of the head main body have been thinned with the increase in size and weight, for example, a plurality of thick walls are formed on the thin side 11 as shown in FIG. If the receiving portions 13, 15 and 17 are protruded, weights are placed on the respective portions, and each portion is locally vibrated at the time of hitting and a chatter noise is generated. This chatter noise is generated in the hollow head body. There is a possibility that an unpleasant hitting sound may occur due to resonance.

  The present invention has been devised in view of such circumstances, and a plurality of protruding portions such as the receiving portions described above are provided on outer shell constituent members such as a top portion, a sole portion, and a side portion, and a head is provided at each protruding portion. An object of the present invention is to provide a head that prevents the occurrence of unpleasant hitting sound by synchronizing the vibrations of the protrusions when mounting a weight body for balance adjustment.

In order to achieve such an object, the invention according to claim 1 is formed of a plurality of outer shell constituent members such as a top portion, a side portion, and a sole portion, and includes a plurality of projecting portions in at least one outer shell constituent member. In a hollow metal head projecting in the direction, ribs are formed between the projecting parts for each outer shell constituent member, and the projecting parts are connected by the ribs so that local portions of the projecting parts are formed. The characteristic vibration is suppressed and the vibrations of the protrusions are synchronized.
According to a second aspect of the present invention, in the head according to the first aspect, the projecting portion is a receiving portion on which a weight body for head balance adjustment is mounted. In the head according to claim 1 or 2 , the rib is made thinner than the protruding portion.

  Furthermore, the invention according to claim 4 is the head according to any one of claims 1 to 3, wherein the protrusion is provided on the back side of the side portion of the head body so as to protrude in parallel with the hitting direction. The invention according to claim 5 is characterized in that, in the head according to claim 4, the rib is projected in parallel with the hitting ball direction.

According to the invention according to each claim, since the plurality of protrusions are connected by ribs for each outer shell constituent member , local vibration of each protrusion is suppressed at the time of hitting , and each protrusion vibration is synchronized and uncomfortable. Generation of hitting sound can be prevented.
According to the second aspect of the invention, the head balance can be adjusted by the weight body. According to the third aspect of the invention, the head balance can be adjusted by the weight body by preventing the weight from being increased by the rib. In doing so, it has the advantage of easy balance adjustment.

  Further, according to the inventions according to claims 4 and 5, by projecting the protrusions and ribs in parallel with the direction of the ball at the time of hitting, the protrusions are less likely to be shaken by vibration at the time of hitting, and the ribs Even if it is formed high, the ribs are less likely to be shaken by vibration during hitting, so that vibration at the projecting portion can be efficiently and reliably suppressed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIGS. 1 to 5 show a wood head according to the first embodiment of claims 1 to 3. In FIG. 1, reference numeral 23 denotes a top part 27, a face part 29, and a side part 31 except for the face side opening 25. A face plate in which the sole portion 33 is integrally cast of a titanium alloy, and a high-strength titanium alloy or stainless alloy is plastically processed (rolled or pressed) in the face-side opening 25 formed in the face portion 29. 35 is joined flush with the face portion 29 to form a metal head 37 formed of a hollow outer shell.

On the heel side of the head main body 23, a cylindrical shaft fixing portion 41 having a bottomed shaft fixing hole 39 is integrally projected from the top portion 27 toward the sole portion 33. A shaft 43 made of CFRP or metal is inserted into the hole 39 and fixed with an adhesive such as epoxy resin or acrylic resin.
Further, as shown in FIGS. 2 to 5, on the back side of the side portion 31 of the head main body 23, cylindrical receiving portions (corresponding to “projections” according to claim 1) 47 and 49 are provided. The weight body 45 is screwed onto both receiving portions 47 and 49 to adjust the head balance.

As shown in FIG. 3, the weight body 45 is formed in a screw shape having a T-shaped cross section using tungsten or copper having a specific gravity larger than that of the head body 23 or the face plate 35, and the outer periphery of the shaft portion 51 is threaded. Has been.
On the other hand, as shown in FIGS. 2, 4, and 5, the receiving portions 47 and 49 have a cylindrical shape in a T-shape in plan view formed along the outer shape of the weight body 45, and the back side of the side portion 31. The head body 23 is provided near the toe and the heel, respectively, with the rearmost part of the head body 23 interposed therebetween. A weight body mounting hole (hereinafter, referred to as “mounting hole”) 53 is provided through the receiving portions 47 and 49 and threaded so that the weight body 45 can be screwed. When the weight body 45 is screwed into the mounting hole 53 from the outside, the head portion 55 of the weight body 45 becomes flush with the outer shape of the side portion 31, and the weight body 45 is screwed to the head body 23. ing.

Further, a nameplate attachment hole 59 for embedding a well-known nameplate 57 which is a plate for decoration or name display is formed in a concave shape in the toe and heel directions on the back side outer periphery of the side portion 31. A protruding portion 61 protrudes inward of the head main body 23 corresponding to the nameplate attachment hole 59, and a nameplate 57 is adhered to the side portion 31 in the nameplate attachment hole 59.
As described above, in the present embodiment, the weight body 45 can be screwed into the mounting holes 53 of the receiving portions 47 and 49. However, instead of such a screwing structure, the weight body 45 receiving portions 47 and 49 are provided. The mounting holes 53 may be press-bonded or may be bonded using an adhesive.

  As described above, in this embodiment, the weight body 45 is screwed to the cylindrical receiving portions 47 and 49 provided on the back side of the side portion 31 to adjust the head balance, and between the receiving portions 47 and 49. Although the nameplate 57 is mounted in the provided nameplate mounting hole 59, as described above, the head body of the recent head has become thinner with the increase in size and weight, and the head 37 of this embodiment also has the head body 23. Thinned.

For this reason, if the receiving portions 47 and 49 and the protruding portion 61 are provided on the back side of the thin side portion 31, weights are placed on the respective portions as in the conventional case, and as a result, each portion is localized at the time of hitting the ball. There is a possibility that a chatter noise is generated by vibration, and the chatter noise resonates in the hollow head main body 21 to generate an unpleasant noise (hit sound).
Therefore, as shown in FIGS. 2 to 5, in the present embodiment, between the receiving portion 47 and the protruding portion 61 and between the protruding portion 61 and the receiving portion 49 along the inner periphery of the side portion 31 on the back side. In addition, ribs 63 and 65 are provided on the same line in the toe and heel directions, respectively, and a plurality of ribs 67 are provided in the top and sole directions from the receiving portions 47 and 49 and the protruding portion 61, respectively. As shown in FIG. 5, the thicknesses t1 of the ribs 63, 65, 67 are uniform, and the receiving portions 47, 49 and the projecting portion are synchronized. The thickness of the protrusion 61 is narrower than the width m of the protrusion 61 (m ≧ t1), thereby preventing an increase in weight due to the ribs 63, 65, and 67.

The rib 67 may have a smaller wall thickness than the ribs 63 and 65 that connect the receiving portions 47 and 49 and the protruding portion 61, thereby further preventing an increase in weight.
As shown in FIG. 3, the height h of each rib 63, 65, 67 is at least twice the thickness t 2 of the side portion 31 (h 1 ≧ 2 t 1), and the strength of the ribs 63, 65, 67 is reduced. Is preventing.

Since the present embodiment is configured as described above, the head balance of the head 37 is changed and set by screwing the weight body 45 to one or both of the receiving portions 47 and 49.
When a ball is hit with a golf club using such a head 37, the ball flies by the repulsive force of the face plate 35, and the outer shell constituting member of the head 37, that is, the face portion 29, the top portion 27, and the side portion 31 is hit. , And the sole portion 33 vibrate to generate a hitting sound.

  At this time, in the side portion 31, weights are placed on the portions provided with the receiving portions 47, 49 and the protruding portion 61, so that these portions try to vibrate locally at the time of hitting the ball. The ribs 63 and 65 are projected in the toe and heel directions between the receiving portion 47 and the protruding portion 61 and between the protruding portion 61 and the receiving portion 49 along the inner circumference on the back side of the receiving portion 47, 49 and a plurality of ribs 67 project from the projecting portion 61 in the top and sole directions so as to synchronize the vibrations of the receiving portions 47 and 49 and the projecting portion 61. Thus, generation of an unpleasant hitting sound is prevented.

As described above, according to the present embodiment, even when a plurality of thick receiving portions 47 and 49 for attaching the weight body 45 to the thin side portion 31 are provided, vibrations of these portions are hit by the ribs 63, 65 and 67 at the time of hitting. Since it becomes possible to synchronize, there is an advantage that generation of an unpleasant hitting sound can be prevented.
In addition, as described above, in the present embodiment, the thickness t1 of the ribs 63, 65, and 67 is made thinner (m ≧ t1) than the width m of the protruding portion 61, thereby preventing an increase in weight due to the ribs 63, 65, and 67. Therefore, there is an advantage that the head balance can be easily adjusted by the weight body 45.

FIG. 6 shows a second embodiment of the head according to claims 1 to 3, and this embodiment omits the nameplate 57, the nameplate attachment hole 59, and the protruding portion 61 from the configuration of the first embodiment described above. In addition, two ribs 69 and 71 having the same width and height as the rib 63 are parallel to each other along the inner periphery of the side portion 31 between the receiving portions 47 and 49 of the weight body 45 provided on the side portion 31. It is something that protrudes.
In addition, since the other structure is the same as that of said 1st embodiment, the same code | symbol is attached | subjected to the same thing and those description is abbreviate | omitted.

Thus, according to the present embodiment, the vibrations of the receiving portions 47 and 49 can be synchronized with the ribs 69 and 71 at the time of hitting, so that unpleasant hitting sound can be prevented.
7 and 8 show an embodiment of a wood head according to claims 1 to 5, and this embodiment has three receiving portions 73, 75, 77 having the same shape and the same structure as the receiving portion 47. Is projected on the back side of the side portion 31 of the head main body 23-1, and when the weight body 45 is screwed to the receiving portions 73, 75, 77, the receiving portions 73, 75, 77 are attached to One rib 79 having a width and height identical to the rib 63 is provided between the receiving portions 73, 75, and 77 in parallel with the hitting direction (arrow A direction in the drawing). In projecting along the inner circumference of 31, the rib 79 projects in parallel to the hitting direction. Since other configurations are the same as those of the embodiment of FIG. 1, the same components are denoted by the same reference numerals, and description thereof is omitted.

  Thus, the head 37-1 according to the present embodiment can synchronize the vibrations of the receiving portions 73, 75, and 77 at the time of hitting with the rib 79, similarly to the head 37 of FIG. Although generation of unpleasant hitting sound can be prevented, in the present embodiment, the receiving portions 73, 75, 77 and the rib 79 project in parallel with the hitting direction at the time of hitting. The receiving portions 73, 75, 77 are not easily shaken by the vibration at the time of hitting the ball, and even if the rib 79 is formed high, the rib 79 is not easily shaken by the vibration at the time of hitting the ball. Can be efficiently and reliably suppressed.

  In each of the embodiments described above, a plurality of receiving portions (protruding portions) of the weight body are provided on the side portion of the head main body. However, it is needless to say that the present invention can also be applied to a head provided with a plurality of protruding portions on the sole portion. .

FIG. 4 is a front view of a head according to a first embodiment of claims 1 to 3. FIG. 2 is a rear view of the head shown in FIG. 1. It is the III-III sectional view taken on the line of FIG. It is the IV-IV sectional view taken on the line of FIG. It is the VV sectional view taken on the line of FIG. It is a principal part front view of the head which concerns on 2nd embodiment of Claim 1 thru | or 3. It is sectional drawing of the head which concerns on one Embodiment of the Claims 1 thru | or 5. It is sectional drawing of the head shown in FIG. It is sectional drawing of the conventional head. It is an expanded sectional view of the receiving part projected from the head body. It is a whole perspective view of a weight body. It is a bottom view of another conventional head body. It is AA sectional view taken on the line of FIG.

Explanation of symbols

23, 23-1 Head body 25 Face side opening 27 Top portion 29 Face portion 31 Side portion 33 Sole portion 35 Face plate 37, 37-1 Head 45 Weight body 47, 49, 73, 75, 77 Receiving portion 53 Mounting hole 57 Name plate 59 Name plate mounting hole 61 Protrusion 63 65, 67, 69, 71, 79 Rib

Claims (5)

In a hollow metal golf club head formed of a plurality of outer shell constituent members such as a top portion, a side portion, and a sole portion, and having a plurality of projecting portions projecting inwardly on at least one outer shell constituent member ,
The ribs between the respective protruding portions each formed in the outer shell components of the respective each protrusion suppressing local oscillation of each projection by concatenating in the ribs, aimed at tuning of each protrusion vibration A golf club head characterized by that.   The golf club head according to claim 1, wherein the protruding portion is a receiving portion on which a weight body for head balance adjustment is mounted. Rib, golf club head according to claim 1 or claim 2, characterized in that it is thinner than the protrusion.   4. The golf club head according to claim 1, wherein a protrusion is provided on the back side of the side portion of the head main body so as to protrude in parallel to the hitting direction. 5. The golf club head according to claim 4, wherein the rib is provided so as to project parallel to the hitting ball direction.

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