JP6405756B2 - Iron type golf club head - Google Patents

Description

  The present invention relates to a golf club head for hitting a golf ball, and more particularly to an iron type golf club head. More specifically, the present invention relates to an iron-type golf club head having a head body having a cavity provided on the back side of a face portion and a non-metal body provided in the cavity.

  Patent Documents 1 and 2 describe a golf club head excellent in vibration absorption effect in which a viscoelastic body is attached to a part of the outer surface of the golf club head and a cover plate is provided to overlap the viscoelastic body. Has been.

  In Patent Document 3, as an iron head having a large sweet area and good hit feeling when hit at the center, a cavity is provided at the upper part of the rear surface, and a bulging part is provided at the lower part of the rear surface. In the iron head in which a concave portion is provided so as to be recessed from the upper surface of the portion toward the sole side, the iron head is described in which the concave portion is provided separately on the toe side and the heel side.

  Similarly, Patent Document 4 discloses an iron head in which a cavity is provided on the toe side and the heel side, and Patent Document 5 describes an iron golf club head in which a groove is provided in the same manner.

JP 2013-22057 A JP 2013-22056 A JP 2012-235828 A JP 2011-24999 A JP 2010-17475 A

  An object of the present invention is to provide an iron type golf club head that is excellent in vibration absorption and that can also enlarge a sweet area.

  Another object of the present invention is to provide an iron-type golf club head having a solid feel in one aspect.

  An iron type golf club head according to the present invention is an iron type golf club head having a head body provided with a cavity on the back side of a face portion, and a non-metal body provided in the cavity. Recesses are provided in the non-metal body on the heel side and the toe side of the head, respectively.

  In one aspect of the present invention, the recess is provided on the upper surface of the non-metallic body.

In one aspect of the present invention, the non-metallic body is disposed on the lower half side of the cavity.

  In one aspect of the present invention, at the central portion of the head body in the toe-heel direction, a lower convex portion that protrudes rearward from a lower back portion of the face portion, and a rear portion of the face portion that is higher than the lower convex portion. An upper convex portion protruding rearward is provided. The non-metal body extends from the heel side to the toe side of the iron type golf club head through the space between the lower convex portion and the upper convex portion.

  The non-metallic body preferably has a Shore D hardness of 30 or more and a Shore D hardness of 110 or less.

  The iron type golf club head of the present invention is provided with a non-metallic body on the back surface of the face portion, and is excellent in vibration absorption when a ball is hit. Further, the head body of this iron type golf club head has a cavity back structure, and the non-metal body has recesses on the heel side and toe side of the iron type golf club head, so that the heel side and toe side Thus, it is possible to suppress a decrease in resilience when hitting a golf ball, distribute the weight to the peripheral portion, and increase the sweet area.

  In the iron type golf club head of the present invention, the lower side convex part and the upper side convex part are provided on the back surface of the face part, so that the hit feeling becomes firm.

It is a rear view of the iron type golf club head concerning an embodiment. FIG. 2 is a perspective view from above of the back surface of the iron type golf club head of FIG. 1. (A) is an exploded perspective view of the golf club head of FIG. 1, and (b), (c) and (d) are sectional views taken along lines IIIb-IIIb, IIIc-IIIc and IIId-IIId of (a). It is sectional drawing which follows the IV-IV line of FIG. It is sectional drawing which follows the VV line of FIG. It is sectional drawing which follows the VI-VI line of FIG. It is the same rear view as FIG. 1 which filled in the dimension line. It is the same sectional drawing as FIG. 6 which filled in the dimension line. (A) is a perspective view of the nonmetallic body used for another embodiment, (b) is sectional drawing which follows the IXb-IXb line | wire of (a). It is a perspective view from the back upper surface of the head main body in another embodiment. It is sectional drawing which follows the XI-XI line of FIG.

  The iron type golf club head according to the first embodiment will be described below with reference to FIGS.

  The iron-type golf club head 1 is attached to the tip of a shaft, and is made of a metal head main body 10 and a non-sticking adhesive or double-sided tape attached to the back side of the face portion 11 of the head main body 10. And a metal body 20.

  As shown in FIGS. 3 and 6, the head main body 10 includes a face portion 11, a hosel portion 12, and a sole portion 13. The back side of the face part 11 is a cavity part 14 (FIG. 3). The cavity portion 14 is surrounded by the sole portion 13, the toe side convex portion 15, the top side convex portion 16, and the heel side convex portion 17. These convex portions 15 to 17 stand rearward from the peripheral edge of the face portion 11.

  A lower convex portion 18 protrudes rearward at the center portion in the toe / heel direction of the lower rear portion of the face portion 11. The lower convex portion 18 is continuous with the upper surface portion 13 a of the sole portion 13. On the back surface of the face portion 11, an upper convex portion 19 protrudes rearward from a central portion in the toe / heel direction and an upper portion of the lower convex portion 18. The back surface of the face portion 11 is a flat surface 11 f except for the convex portions 15 to 17, the lower convex portion 18, the upper convex portion 19 and the sole portion 13.

  The maximum thickness A (FIG. 8) of the upper convex portion 19 from the flat surface 11f is smaller than the maximum thickness B of the upper surface portion 18a of the lower convex portion 18 from the flat surface 11f. This prevents the center of gravity of the head from becoming too high. The rear surface 18b of the lower convex portion 18 is flush with the rear surface 13b of the sole portion 13.

  In this embodiment, the lower convex portion 18 has the smallest width in the toe / heel direction at the upper portion, and the width in the toe / heel direction becomes larger toward the sole portion 13 side.

As shown in FIG. 7, when the golf club head 1 is grounded to the grounding surface at the specified lie angle and the specified loft angle, the minimum height C from the grounding surface of the rear surface 13b of the sole portion 13 is 2 mm or more, It is 4 mm or more, 10 mm or less, and especially 8 mm or less is suitable. The maximum height D of the rear surface 18b of the lower convex portion 18 from the ground contact surface is 10 mm or more, particularly 12 mm or more, and is preferably 22 mm or less, particularly 20 mm or less. If the maximum height D is too high, the center of gravity of the head may become too high, and if it is too low, a firm feel may not be obtained.
The length E in the toe-heel direction of the upper surface portion 18a of the lower convex portion 18 is 8 mm or more, particularly 10 mm or more, preferably 20 mm or less, particularly 18 mm or less. The length F in the toe-heel direction of the toe side boundary position 18t and the heel side boundary position 18h is 15 mm or more, particularly 20 mm or more, and preferably 30 mm or less, particularly 28 mm or less. If the length E and the length F are too long, the resilience may be lowered when the golf ball is hit on the heel side and the toe side. If the length E is too short, a firm feel may not be obtained. is there.

  As shown in FIG. 8, the maximum thickness B from the flat surface 11f of the upper surface portion 18a of the lower convex portion 18 is 8 mm or more, particularly 10 mm or more, and preferably 20 mm or less, particularly 18 mm or less. If the maximum thickness B is too thick, the weight of the head may become too heavy, or the lower convex portion 18 may be seen too much when the club is held, and the head's center of gravity may become too high if it is too thin. , You may not be able to get a firm feel.

  The length G (FIG. 7) in the toe-heel direction of the upper convex portion 19 is 15 mm or more, particularly 17 mm or more, and preferably 30 mm or less, particularly 25 mm or less. If the length G is too long, the resilience may be reduced when the golf ball is hit on the heel side and the toe side, and if it is too short, a firm feel may not be obtained.

The height H (FIG. 8) in the vertical direction of the upper convex portion 19 is 2 mm or more, particularly 3 mm or more, and is preferably 7 mm or less, particularly 6 mm or less. If the height H is too high, the center of gravity of the head may become too high, and if it is too low, a firm feel may not be obtained.
The maximum thickness A (FIG. 8) from the flat surface 11f of the upper convex portion 19 is 2 mm or more, particularly 3 mm or more, and preferably 8 mm or less, particularly 7 mm or less. If the maximum thickness A is too thick, the center of gravity of the head may become too high, and if it is too thin, a firm feel may not be obtained.

  The minimum distance I (FIG. 8) between the lower convex portion 18 and the upper convex portion 19 is 1 mm or more, particularly 2 mm or more, and preferably 5 mm or less, particularly 4 mm or less. If the minimum distance I is too large, it may affect the design of the center of gravity of the head in arranging the lower convex portion 18 and the upper convex portion 19, and if it is too small, it depends on the nonmetallic body 20 arranged here. The vibration absorption effect may be insufficient.

  The cavity 14 includes a toe side cavity 14 a that is toe side of the lower convex portion 18 and the upper convex portion 19, a heel side heel cavity 14 b, and a central cavity between the lower convex portion 18 and the upper convex portion 19. 14c.

  The non-metal body 20 connects the toe side part 21 arranged in the toe side cavity 14a, the heel side part 22 arranged in the heel side cavity 14b, and the connecting part 23 arranged in the central cavity 14c. And have.

  From the upper surface 21a and the upper surface 22a of the toe side portion 21 and the heel side portion 22, a recess 24 and a recess 25 are provided downward. Further, the upper surface 23 a of the connecting portion 23 is provided with a notch-shaped portion 26 with which the upper convex portion 19 is engaged.

  In a state in which the nonmetallic body 20 is mounted in the cavity 13, the front surface of the nonmetallic body 20 abuts on the flat surface 11 f of the face portion 11, and the lower surface is in contact with the upper surface 13 a of the sole portion 13 and the upper surface 18 a of the lower convex portion 18. The notch-shaped portion 26 is in contact with the upper convex portion 19 and is disposed on the lower half side of the cavity. Further, the rear surface of the non-metallic body 20 is flush with the rear surfaces of the sole portion 13, the toe side convex portion 15, the heel side convex portion 17, and the lower convex portion 18, or slightly to the face portion 11 side. It has become.

  The upper surface of the upper convex portion 19 is located slightly above the upper surface of the nonmetallic body 20.

  The length of the toe-side recess 24 in the toe-heel direction is 10 mm or more, particularly 15 mm or more, and preferably 30 mm or less, particularly 25 mm or less. The width of the concave portion 24 in the front-rear direction (perpendicular to the back surface of the face portion 11) is 2 mm or more, particularly 3 mm or more, and preferably 7 mm or less, particularly 6 mm or less. The depth of the recess 24 is 2 mm or more, particularly 3 mm or more, and is preferably 15 mm or less, particularly 14 mm or less.

  The length in the toe-heel direction of the concave portion 25 on the heel side is 10 mm or more, particularly 13 mm or more, and preferably 25 mm or less, particularly 22 mm or less. The width of the recess 25 in the front-rear direction (perpendicular to the back surface of the face portion 11) is 2 mm or more, particularly 3 mm or more, and preferably 7 mm or less, particularly 6 mm or less. The depth of the recess 25 is 2 mm or more, particularly 3 mm or more, and is preferably 10 mm or less, particularly 9 mm or less.

  If the length in the toe-heel direction, the width in the front-rear direction, and the depth of the recess 24 and the recess 25 are too small, the resilience may be reduced when the golf ball is hit on the heel side and the toe side. .

  In addition, the depth of the recessed part 24 and the recessed part 25 may be uniform in a toe | heel / heel direction, respectively, and may be non-uniform | heterogenous. For example, the concave portion 24 and the concave portion 25 may be configured such that each lower convex portion 18 side is deepest and becomes shallower as the distance from the lower convex portion 18 increases. In this case, the average depth may be in the above range.

  The hardness of the material of the nonmetallic body 20 is a Shore D hardness of 30 or more as a lower limit, preferably a Shore D hardness of 70 or more, and an upper limit of a Shore D hardness of 110 or less, preferably a Shore D hardness of 100 or less. If the hardness is too low, the non-metallic body 20 may be damaged when it collides somewhere. If the hardness is too high, it is difficult to deform the non-metallic body 20 and attach it to the golf club head 1, In some cases, the golf club head 1 and the non-metallic body 20 cannot cope with variations in manufacturing shape. Examples of the material of the nonmetallic body 20 include a material made of rubber or resin. Examples of the rubber include natural rubber, polybutadiene rubber, styrene butadiene rubber, and isoprene rubber. Examples of the resin include ionomer resins, urethane resins, polyester resins, and polyamide resins. In particular, urethane resin is suitable.

  In the iron type golf club head 1 configured as described above, the non-metallic body 20 is provided in the cavity 14, and the non-metallic body 20 absorbs vibration at the time of a ball hit. Become. Further, since the head body 10 has a cavity back structure and the recesses 24 and 25 are provided on the toe side and the heel side of the non-metal body 20, respectively, when a golf ball is hit on the heel side and the toe side. The reduction in resilience can be suppressed, the weight can be distributed to the periphery, and the sweet area becomes large.

  In this embodiment, since the lower convex portion 18 and the upper convex portion 19 are provided in the center portion in the toe-heel direction on the back surface of the face portion 11 of the head main body 10, the hit feeling becomes firm, and the muscle It can be close to the feel of a back type iron type golf club head. Further, a space between the lower convex portion 18 and the upper convex portion 19 is a central cavity 14c, and a non-metallic body 20 is also distributed in this portion, so that the ball hits at the center of the face portion 11. The vibration is easily absorbed.

  In the above embodiment, the two recesses 24 and 25 are provided, but three or more recesses may be provided. The recess may be provided not from the upper surface of the non-metal body 20 but from the rear surface.

  In the non-metallic body 20 of the above-described embodiment, the concave portion 24 and the concave portion 25 are provided in the shape of a concave hole, but may pass through the non-metallic body 20. Moreover, it may be set as the notch-shaped recessed part 24A and the recessed part 25A like the nonmetallic body 20A shown in FIG. 9 is the same as that of the non-metal body 20, and the same reference numerals indicate the same parts. The recess 24A and the recess 25A are located on the face 11 side of the non-metal body 20A, but may be located on the opposite side.

  In the present invention, an intermediate convex portion 19t may be provided so as to connect the upper convex portion 19 and the lower convex portion 18 as in the head main body 10A shown in FIGS. The maximum thickness from the flat surface 11f of the intermediate convex portion 19t is the maximum thickness A from the flat surface 11f of the upper convex portion 19 and the maximum thickness B from the flat surface 11f in the upper surface portion 18a of the lower convex portion 18. Smaller than.

  The present invention is not limited to the above embodiment.

DESCRIPTION OF SYMBOLS 1 Iron type golf club head 10, 10A Head main body 13 Sole part 14 Cavity 18 Lower convex part 19 Upper convex part 20, 20A Non-metallic body 24, 24A, 25, 25A Concave part

Claims (7)

In an iron type golf club head having a head main body provided with a cavity on the back side of the face portion, and a non-metal body provided in the cavity,
An iron type golf club head, wherein a concave portion is provided on an upper surface of the non-metal body on a heel side and a toe side of the iron type golf club head. 2. The iron type golf club head according to claim 1, wherein a length in the toe-heel direction of the concave portion on the toe side is 10 mm or more, a width in the front-rear direction is 2 mm or more, and a depth is 2 mm or more.
An iron-type golf club head, wherein a length of the concave portion on the heel side in the toe-heel direction is 10 mm or more, a width in the front-rear direction is 2 mm or more, and a depth is 2 mm or more. 3. The iron type golf club head according to claim 1, wherein the recess extends from the upper surface of the non-metal body toward the sole portion and is parallel to the face surface. 4. The iron type golf club head according to claim 1, wherein the non-metal body is disposed on a lower half side of the cavity. In claims 1 to iron-type golf club head according to any one of 4, at the central portion in the toe-heel direction of the head body, and a lower protrusion protruding from the lower back of the face portion to the rear, lower An iron-type golf club head, comprising an upper convex portion protruding rearward from the back surface of the face portion above the side convex portion. 6. The iron type golf club head according to claim 5 , wherein the non-metal body extends from the heel side to the toe side of the iron type golf club head through between the lower convex portion and the upper convex portion. An iron type golf club head characterized by the above. In iron-type golf club head according to any one of claims 1 to 6, wherein the non-metallic body, a Shore D hardness of 30 or more, an iron type golf club head, wherein the or less Shore D hardness 110.

Images