JP5627358B2 - Golf club set - Google Patents

Description

The present invention relates to a golf club set, and more particularly to a golf club set including a plurality of wood clubs having a hollow head with a loft angle of 14 ° to 35 ° in the set.

  Conventionally, golf club sets include a wood set composed of a plurality of wood clubs, an iron set composed of a plurality of iron clubs, and a full set combining both sets.

  In recent years, a so-called utility golf club having a hollow head shape intermediate between a wood club and an iron club has been proposed. Of course, this utility golf club is marketed as a single item, and the loft angle has been changed. Furthermore, golf club sets in which these are incorporated into the set are also commercially available.

  Conventionally, as a problem of this type of golf club set, a high count golf club with a large loft angle tends to have a larger face progression (a leading edge protrusion amount with respect to the shaft axis) than a low count golf club. was there.

  When face progression is increased in this way, there is a problem that the leading edge protrudes forward at the time of addressing, which makes it uncomfortable and difficult to hold. In addition, it has been pointed out that when the face progression is large, the launch angle is large, the hit ball is blown up, and the flight distance is not increased.

  Therefore, in order to solve such problems, Patent Document 1 discloses a golf club set in which the face progression is reduced from a low count to a high count. According to this golf club head, it becomes easier to set a golf club having a higher count at the time of addressing than before, and the launch angle of the golf club having a higher count is suppressed and a launch angle suitable for the count due to the effect of the loft angle is obtained. Therefore, it is possible to obtain an appropriate flight distance and trajectory for each count.

  Another problem with this type of golf club set is that the shaft is long and the center of gravity angle (the angle between the vertical axis of the shaft axis and the tangent to the leading edge at the center of the face) is low. The golf club has a tendency that the head (face surface) is easily opened outward as compared to a golf club having a higher count at the time of addressing, and the hit ball is bent (sliced) to the right.

  Therefore, Patent Document 2 proposes a golf club set in which the center-of-gravity angle is gradually increased from a high count to a low count. Thus, according to this conventional example, by changing the center-of-gravity angle in this way, the face surface on the low count side is easily closed inward at the time of hitting, so there is a variation in the directionality of the hit ball on the low count side. It was reduced.

  Further, in Patent Document 3, for example, in a golf club set in which at least one kind of different clubs is added to an iron club set excluding a long iron, the center of gravity distance (perpendicular from the shaft axis to the center of gravity of the head) Golf clubs with different center of gravity distances on the extension of the center of gravity that decreases from high to low in the iron club set so that it is easy to hit and eliminate sudden changes in A set is proposed.

  Thus, conventionally, various proposals regarding golf club sets have been made.

JP 2009-247399 A Japanese Patent Laid-Open No. 5-177016 JP 2001-299967 A

  If the face progression is reduced as the count is lowered as in the golf club set of Patent Document 1, it is easier to hold a golf club on the higher count side at the time of addressing than in the past.

  However, if the face progression is decreased as the count is lowered, that is, as the loft angle is increased, the hitting position of the ball moves backward.

  For this reason, if the swing timing (face rotation) is the same for each count, swinging at the higher count timing will cause the face to open earlier (facing to the right) in the lower count golf club. It is easy to hit right and become a slice ball.

  On the other hand, when the swing is made at the timing of the low count side, the higher the golf club, the faster the head turn, and the high count golf club 1 has the face surface 3 closed as shown in FIG. ), The ball 5 is hit, so that the ball 5 is likely to be left-handed or become a hook ball.

  On the other hand, the conventional example of Patent Document 2 attempts to improve the directionality of the hit ball by increasing the center-of-gravity angle as the count increases, but face progression is greatly related to variations in the hit ball direction. For this reason, it has been pointed out that even if only the center-of-gravity angle is adjusted, if the face progression becomes smaller than the center-of-gravity angle, the directionality of the hit ball tends to vary.

  Further, as in the conventional example of Patent Document 3, even if the center of gravity distance is shortened as the count increases, if the center of gravity angle of the golf club on the low count side is large, the face is closed (state facing left). It is easy to hit the ball, and because the head is easy to turn back (easy to turn to the left) due to the short center of gravity distance, it is difficult to eliminate the variation in the direction of the ball. It was a fact.

  As described above, various proposals have been made for the problems of the golf club set. However, various problems still remain regarding this type of golf club set.

The present invention has been made in view of the foregoing circumstances, golf wood club loft angle 14 ° to 35 °, for example where the head width, such as fairway wood and utilities including a wood club having a more hollow head 50mm at a club set, a beret di golfer focuses directionality to the wood clubs stabilized was hardly loft angle 14 ° to 35 °, tends poised at the address, of the hook ball due to且Tire shift angle increases An object of the present invention is to provide a golf club set in which prevention is achieved.

In order to achieve such an object, the present invention provides a golf club set including a plurality of wood clubs having a hollow head having a loft angle of 14 ° to 35 ° in the set, and having a loft angle of 14 ° to 35 °. The head height of the head of the wood club is made constant, the change in the height of the center of gravity of the head is reduced , the face progression and the head width of the head of the wood club having a loft angle of 14 ° to 35 ° are made constant , Supporting Rutotomoni moved rearwardly the center of gravity of the head of the head in accordance becomes loft angle is large wood clubs, the center of gravity angle of the wood club head loft angle 14 ° to 35 °, the loft angle is greater wooden club There were small, and the distance to the center of gravity of the head loft angle 14 ° to 35 °, characterized in that longer follow the loft angle is greater wood club.

According to the present invention, by making the head height of the plurality of wood club loft angle 14 ° to 3 5 ° in the set head constant, the center of gravity of the head change of the height of the center of gravity of the head is low It is easier to adjust the angle and center of gravity distance.
The face progression and head width of a plurality of wood clubs with loft angles of 14 ° to 35 ° in the set are made constant, and the center of gravity angle of the head is reduced and the center of gravity distance of the head is reduced as the loft angle increases. Due to the synergistic effect of increasing the length, the face surface of the high-counter head does not turn to the left when the ball is hit.
As a result, prevention of the hook the ball due to the loft angle of the head is large I can and Do, has the advantage of the golf club of the high count is likely to strike.
In addition, by making the head width substantially constant, there is no consciousness of swinging horizontally (level swing) when the width is wide, or swinging from the top (down blow) when it is narrow, and the same feeling Has the advantage of being able to swing at.

It is a side view of the head of four utility golf clubs contained in the golf club set concerning one embodiment of the present invention . It is explanatory drawing which shows numerical values, such as a gravity center angle and gravity center distance of four utility golf clubs. It is a front view of the head of a utility golf club. It is a side view of the head of a utility golf club. It is a cross-sectional view of the head of a utility golf club. It is a bottom view of the head of a utility golf club. It is a bottom view of the head of four utility golf clubs. It is explanatory drawing which shows the hit direction of the ball at the time of hitting in the state where the face of the golf club on the high count side was closed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1A, 1B, 1C, and 1D show four utility golf clubs U # having loft angles of 21 °, 24 °, 27 °, and 30 °, respectively, as shown in FIG. 21, U # 24, U # 27, and U # 30 heads 7, 9, 11, and 13 are shown .
A golf club set according to an embodiment of the present invention is a golf club set composed of a plurality of wood clubs, an iron club, and the like, except for the first to sixth iron clubs that are difficult to hit from the iron set. This golf club set incorporates four utility golf clubs U # 21, U # 24, U # 27, and U # 30 shown in a), (b), (c), and (d).

  3 to 6 show the head 9 of the utility golf club U # 24 of FIG. 1B, and the configuration of the head 9 will be described below. The other heads 7, 11, and 13 have the same configuration as that of the head 9. Since the configuration is substantially the same, the description thereof is omitted.

In the figure, reference numeral 15 denotes a hollow head body in which the face portion 17, the sole portion 19, and the side portion 21 are integrally cast of stainless steel or the like, and is separately manufactured in an opening (not shown) formed in the upper portion of the head body 15. The crown portion 23 is fixed to form a head 9 having a hollow outer shell structure. Note that an opening may be formed in the face portion of the head body, and a face member may be fixed to the opening to form a hollow outer shell structure head.

Further, as shown in FIG. 5, a cylindrical shaft fastening portion 29 in which the shaft fastening hole 27 penetrates in the vertical direction along the heel portion 25 is formed on the inner periphery of the head main body 15 on the heel portion 25 side. As shown in FIG. 3, the shaft fixing portion 29 protrudes upward from the head body 15 to form a hosel portion 31. Then, the shaft fastening holes 27, fiber reinforced resin shaft 35 via the resin of the socket 33, that has from above of the head body 15 is inserted toward the sole portion 19.

FIG. 2 shows (1) lie angle (degree), (2) loft angle (degree), (3) head volume (mm ³ ) of utility golf clubs U # 21, U # 24, U # 27, and U # 30. (4) Head length (mm), (5) Head width (mm), (6) Head height (mm), (7) Center of gravity angle (degrees), (8) Center of gravity distance (mm), (9) The details of the center of gravity height (mm) are shown.

As is well known,
[1] The lie angle is an angle formed by the reference horizontal plane R with which the head 15 is in contact with the shaft axis S as shown in FIG. 3, and the lie angle α of the utility golf club U # 24 is as shown in FIGS. The angle is 61.5 °. As in the prior art, the lie angle α is 61 °, 61... As shown in FIG. 2 as the number decreases from the utility golf club U # 21 to the utility golf clubs U # 24, U # 27, U # 30. 5 °, 62 °, and 62.5 ° are sequentially set larger.

 [2] The loft angle is an upward angle of the face surface 17a with reference to the shaft axis S as shown in FIG. 4, and the loft angle β of the utility golf club U # 24 is 24 as shown in FIGS. It is °. As in the conventional example, as the number decreases from the utility golf club U # 21 to the utility golf clubs U # 24, U # 27, U # 30, the loft angle β is 21 ° as shown in FIGS. , 24 °, 27 °, and 30 ° are sequentially set to be larger.

  For this reason, as shown in FIGS. 1 and 3, in each of the utility golf clubs U # 21, U # 24, U # 27, and U # 30, the leading edge E of the heads 7, 9, 11, and 13 is maximized. The distances Q1, Q2, Q3, Q4 between the tip and the hitting point P of the ball 5 become longer (Q1 <Q2 <Q3 <Q4) as the loft angle β increases.

[3] The head volume refers to the volume of the head. Since the head is difficult to calculate with a complicated shape to represent the size, the size of the head is represented using the fact that the volume of water is 1 cc = 1 mm ³ .

As shown in FIG. 2, the head volume of the utility golf club U # 24 is 122 mm ³ , and the count is changed from the utility golf club U # 21 to the utility golf clubs U # 24, U # 27, U # 30 as in the conventional case. As shown in FIG. 2, the head volume is sequentially set to be smaller as 125 mm ³ , 122 mm ³ , 119 mm ³ , and 116 mm ³ as shown in FIG.

 [4] The head length refers to the length of the head 9 in the toe-heel direction as shown in FIG. 3, and the head length L of the utility golf club U # 24 is 99 mm as shown in FIG. . The length of the head in the toe-heel direction is a position corresponding to 0.475 inches perpendicular to the sole surface with the heel angle set at a lie angle of 60 ° and the face aligned with the square. Measured as a location that collides with a surface perpendicular to the sole surface.

 [5] The head width is the length from the leading edge of the leading edge E of the head 9 to the rearmost end of the head 9 as shown in FIG. 4, and the head width M of the utility golf club U # 24 as shown in FIG. Is 59.4 mm.

 [6] The head height refers to the height from the reference horizontal plane R to the highest point of the head 9 as shown in FIG. 4, and the head height H of the utility golf club U # 24 is 37.4 mm as shown in FIG. Has been.

 [7] The center-of-gravity angle is an angle formed by a perpendicular line S-1 with respect to the shaft axis S as shown in FIG. 6 and a tangent line X in contact with the leading edge E at the center of the face surface 17a. The center-of-gravity angle γ2 of U # 24 is 19 °.

 [8] The center-of-gravity distance is the length of a perpendicular line that connects the center of gravity G of the head 9 and the shaft axis S vertically as shown in FIG. 3, and the center-of-gravity distance N of the utility golf club U # 24 is as shown in FIG. It is 35 mm.

 [9] The center-of-gravity height refers to the height from the reference horizontal plane R to the center of gravity G as shown in FIG. 4, and the center-of-gravity height T of the utility golf club U # 24 is 15.5 mm as shown in FIG. .

As is well known in the art, the amount of protrusion from the shaft axis S to the leading edge E shown in FIG. 4 is referred to as a face progression FP. As shown in FIG. 1, the face progression FP of the utility golf clubs U # 21, U # 24, U # 27, and U # 30 is constant. In addition, the club lengths of the utility golf clubs U # 21, U # 24, U # 27, and U # 30 are shortened as the loft angle β increases.

  As shown in FIG. 5, the utility golf club U # 24 is provided with a thick portion 37 on the bag side inner periphery of the side portion 21 of the head body 15, and the center of gravity angle γ and the center of gravity distance N are adjusted and set. . Further, the other utility golf clubs U # 21, U # 27, U # 30 have a thick portion 39 indicated by a two-dot chain line in FIG. 5 in place of the thick portion 37 or together with the thick portion 37. A thick portion 41 indicated by a broken line in FIG. 5 is provided on the inner periphery of the side portion 21 of the head body 15 and further, instead of the thick portions 37 and 39, or together with the thick portions 37 and 39. By providing the heel side inner periphery of the side portion 21, the gravity center angle and the gravity center distance are individually adjusted and set. Although not shown, it is possible to adjust and set the gravity center angle and the gravity center distance by changing the shape of the head.

  In addition to the configuration described above, the present embodiment has the following characteristics in order to prevent hook balls due to an increase in the loft angle.

First, as shown in FIG.
(a) The head length L, head width M, and head height H of the heads 7, 9, 11, and 13 of all utility golf clubs U # 21, U # 24, U # 27, and U # 30 are made constant. And as shown in FIG.
(b) All face progression FPs of utility golf clubs U # 21, U # 24, U # 27, and U # 30 have the same dimensions.

The reason why you all utility golf club U # 21, U # 24, U # 27, U # 30 a constant head length L of the head 7, 9, 11, 13 of the longer face This is because it is possible to swing with the same feeling by eliminating the image of opening and hitting the ball, and when the ball is short, the face closes and hits the ball.

Likewise, the reason that the head width M of all of the head 7, 9, 11, 13 to a constant, the swing (down blow) from the top and wider horizontally or swing (level swing), and narrow This is because the consciousness of losing will not work and you can swing with the same feeling.

The reason for one fixed head height H of all the heads 7, 9, 11, 13 can reduce the change of the center of gravity height, because the center of gravity angle, easily performed adjustment of the center of gravity distance.

Furthermore, in the present embodiment, the thick portions 37, 39, 41 are appropriately provided on the inner periphery of the heads 7, 9, 11, 13, so that FIGS. 2 and 7 (a), (b), (c) As shown in (d),
(c) As the loft angle β increases from utility golf club U # 21 to utility golf clubs U # 24, U # 27, U # 30, the center of gravity angle γ decreases (γ1>γ2>γ3> γ4). ,
(d) The center of gravity distance N is increased as the loft angle β increases from the utility golf club U # 21 to the utility golf clubs U # 24, U # 27, U # 30.

  As the center of gravity angle γ and the center of gravity distance N change in this way, the center of gravity height increases as the loft angle β increases from the utility golf club U # 21 to the utility golf club U # 30 as shown in FIG. H is high.

  This embodiment is configured as described above, and as shown in FIG. 1, the face progression FP of the utility golf clubs U # 21, U # 24, U # 27, and U # 30 is constant. The position of becomes constant. Therefore, the change in the address posture due to the count is smaller than in the prior art, and it is easy to hold.

  However, as shown in FIG. 1, as the loft angle β increases from the utility golf club U # 21 to the utility golf clubs U # 24, U # 27, U # 30, the hitting point P of the ball 5 moves backward. The distances Q1, Q2, Q3, and Q4 between the leading edge of the leading edge E of the heads 7, 9, 11, and 13 and the striking point P become longer as the loft angle β increases.

  When the loft angle β is increased in this way, the heavy face surface 17a is positioned rearward, so that the center of gravity moves rearward and the center of gravity angle increases in the past, and the face surface 17a turns to the left when hitting a ball. There was a tendency to hit the ball in the state (closed state).

However, as described in the above (c), in the present embodiment, as the loft angle β increases from the utility golf club U # 21 to the utility golf clubs U # 24, U # 27, U # 30, the gravity center angle γ The head width M of all the heads 7, 9, 11 and 13 was made constant .

  Therefore, according to the present embodiment, as the loft angle β increases from the head 7 to the heads 9, 11, and 13, the head turn becomes difficult and the face surface 17 a does not easily turn to the left when the ball is hit. .

  Conventionally, when the center-of-gravity distance is short, the head turn is quick and it is easy to hit the ball with the face surface closed.

  However, as described in the above (d), in the present embodiment, the center of gravity distance N increases as the loft angle β increases from the utility golf club U # 21 to the utility golf clubs U # 24, U # 27, U # 30. Therefore, even if the loft angle β increases from the head 7 to the heads 9, 11, and 13, the head turn is difficult to make, and the face surface 17a does not easily turn to the left when the ball is hit.

Therefore, according to this embodiment, in the four utility golf clubs U # 21, U # 24, U # 27, and U # 30 having different loft angles β, the center of gravity angle γ is increased as the loft angle β increases. Due to the synergistic effect of reducing the head width M and increasing the center-of-gravity distance N, the hook ball can be prevented from increasing by increasing the loft angle β.

  In addition, as described in the above (a), the present embodiment has the head lengths of the heads 7, 9, 11, and 13 of all utility golf clubs U # 21, U # 24, U # 27, and U # 30. Since L, the head width M, and the head height H are substantially constant, the heads 7, 9, 11, and 13 have the same shape, which has the advantage of being easier to hold.

  In this way, the head length L of 7, 9, 11 and 13 is made substantially constant, so that the longer the face is, the more open the ball is hit, and the shorter, the face is closed and the ball is hit. It has the advantage that it can be swung with the same feeling, and by making the head width M of the heads 7, 9, 11, and 13 substantially constant, if the width is wide, it can swing horizontally (level swing), If it is narrow, there is no consciousness of swinging (down blowing) from above, and there is an advantage that it can swing with the same feeling. Further, since the head height H of all the heads 7, 9, 11, and 13 is made substantially constant, the change in the center of gravity height can be reduced, and the center of gravity angle and the center of gravity distance can be easily adjusted.

  In the above embodiment, the face progression FP of the utility golf clubs U # 21, U # 24, U # 27, and U # 30 is made constant. However, the golf club having a large loft angle has a small loft angle. It may be substantially constant as long as it does not exceed the face progression of the golf club, and the face progression may be reduced as the loft angle increases.

  Thus, also according to this embodiment, the intended purpose can be achieved as in the above-described embodiment, and hook balls can be prevented by increasing the loft angle.

U # 21, U # 24, U # 27, U # 30 Utility golf club 5 Balls 7, 9, 11, 13 Head 15 Head body 17 Face portion 17a Face surface 19 Sole portion 21 Side portion 23 Crown portion 25 Heel portion 27 Shaft fastening hole 29 Shaft fastening part 31 Hosel part 35 Shafts 37, 39, 41 Thick part α Lie angle β Loft angle γ Center of gravity angle E Leading edge FP Face progression H Head height L Head length M Head width N Center of gravity Distance P Hit point R Reference horizontal plane S Shaft axis S-1 Vertical line T Center of gravity height X Tangent

Claims (1)

In a golf club set including a plurality of wood clubs having a hollow head having a loft angle of 14 ° to 35 ° in the set,
The head height of the wood club head with a loft angle of 14 ° to 35 ° is kept constant, and the change in the center of gravity height of the head is reduced .
And the face progression and head width of the wood club head loft angle 14 ° to 35 ° to constant Rutotomoni moves the center of gravity of the head to the rear of the head in accordance with a loft angle becomes large wooden club,
The centroid angle of the wood club head loft angle 14 ° to 35 °, smaller follow the loft angle is large wooden club, and the centroid distance of the head loft angle 14 ° to 35 °, the loft angle golf club set, characterized in that the long follow to become a large wooden club.

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