JP3105838U - Golf club set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a conventional golf club set in which the shape of a head is changed in three ranges of long, middle, and short, because it has a large difference in function at a boundary portion of each range, and is difficult for golfers to use. was there.
SOLUTION: A golf club set having a structure in which the club group is provided for every continuous second count and the type of head shape is changed.
[Effect] Since the unit in which the shape of the head is changed is every second, the functional difference at the boundary of each range is smaller than that of the conventional golf club set, and the ideal combination is convenient for golfers. be able to.
[Selection diagram] Fig. 1

Description

  The present invention relates to a golf club set in which the head shape is changed for each count range.

  Usually, a golf club set includes a wood club such as a driver or a fairway wood, a 7-8 iron club from 2 or 3 irons to a 9 iron, a pitching wedge, an approach wedge, and a sand wedge. The wedge club and putter are combined to form a complete set of all clubs required for play. Then, since the golfer needs to select the optimal golf club according to the distance to the pin, the golf club set gradually changes the loft angle and the like so that a different flying distance can be obtained with each count. The configuration has been changed.

  However, the trajectory when the ball is hit, the spin amount given to the ball, and the like vary depending on whether the ball is hit with the core of the golf club or when the ball is hit with the core off, resulting in variation in the flight distance. . For this reason, particularly, the configuration of the 3rd to 4th irons, which are a group of long iron clubs that need to be accurately separated, and the 5th to 7th irons, which are a group of middle iron clubs, are configured to minimize variations in flight distance. A golf club set employing a golf club having a wide sweet spot has been proposed.

  As an example of the above, for example, a long iron or a middle iron adopts an iron club called “cavity back iron” in which a cavity is provided in a back face. In the cavity back iron, the weight is distributed around the head, so that a larger sweet spot area can be obtained on the striking surface. Therefore, even if the ball is hit at a place slightly away from the sweet spot, the variation in flight distance can be reduced as compared with the case of using an iron club without a cavity.

  Further, for example, Japanese Patent Application Laid-Open No. Hei 5-329232 discloses a golf club set having a configuration in which the material of the ball striking surface of the head is changed according to the long, middle, and short count ranges. Specifically, carbon fibers are used for long irons, stainless steel or iron is used for middle irons, and copper is used for short irons. It is said that, in the long type, the spin amount is reduced and the flight distance is increased, while in the short type, the spin amount is increased and the ball stops well, and in the middle type, the intermediate performance is obtained. I have.

  Further, for example, JP-A-6-296713 discloses a golf club set having a configuration in which the specific gravity of the face material is changed according to the count range. Specifically, for 3 to 5 irons, an aluminum alloy having a specific gravity of 2.8 to less than 4.2, for 6 to 8 irons, a titanium alloy having a specific gravity of 4.2 to 8.0, From the ninth iron to the sand wedge, brass having a specific gravity of 8.0 or more is used. This increases the moment of inertia to increase the flight distance for long irons, while increasing the amount of spin for short irons so that the ball stops well on the green, and for middle irons the same feeling as non-composite clubs It is said that a ring can be obtained.

  As described above, recently, golf club sets have been used in which the shape of the head is changed for each of the long, middle, and short count ranges, and the specific gravity of the material of the ball striking surface of the head and the face material are changed. Therefore, golfers using this type of golf club set are not limited to flight distance characteristics based on loft angle etc. as in the past, but are optimally aware of the functional characteristics set for each count range You need to choose a good club.

  However, in the conventional golf club set in which the shape of the head is changed in the three ranges of long, middle, and short, the functional difference at the boundary between the ranges is conspicuous, and the continuity of the function is lacking. There was a problem that it was difficult to use for golfers. For example, in a golf club set in which the sweet spot is set wide for 6-8 irons for the middle, a functional difference is noticeable between the 5 irons for the long and the 6 irons are relatively large. There are problems such as feeling that the flight distance comes out.

  Therefore, the present inventor has a club group in which the shapes of the heads of a plurality of golf clubs having consecutive counts are approximated to each other, and a golf club constituted by two or more club groups having different types of head shapes. As a result of repeated investigations on an ideal combination in a set, it was found that it is most desirable to change the type of the shape of the head by providing the above-mentioned club group every second consecutive number, and completed the present invention.

  The present invention provides a golf club set including two or more club groups having different head shapes of a plurality of golf clubs in which the head shapes of a plurality of golf clubs having continuous counts are approximated to each other, The most important feature is that the club group is provided for every continuous second count and the type of head shape is changed.

  According to the present invention, since the unit for changing the shape of the head is set to every second, the function is finer than that of the conventional golf club set which is changed in three ranges, that is, long, middle, and short. It can be divided, and there is an advantage that the functional difference at the boundary of each range can be reduced.

  The present invention provides a golf club set including two or more club groups having different head shapes of a plurality of golf clubs in which the head shapes of a plurality of golf clubs having continuous counts are approximated to each other, The club group is provided for every second consecutive number, and the type of head shape is changed.

  In the present invention, the iron club and the wedge club are provided with five types of the first, second, third, fourth, and fifth types of club groups in ascending order of count, and the first club group includes: The head is a hollow iron having a hollow portion, the second and third club groups are cavity back irons having a cavity in at least a part of the back face, and the fourth and fifth club groups are provided with cavities in the back face. If there is no type of iron club or wedge club, the first club group can achieve a low center of gravity and improve the flight distance by the hollow structure, while the second and third club groups can gradually widen the sweet spot. This is preferable because the ease of hitting can be improved.

  In the present invention, if the cavity provided in the back face of the third club group is smaller in area than the cavity provided in the back face of the second club group, the fourth club having no cavity in the back face is provided. This is preferable because the functional connection with the group can be made smooth.

  Hereinafter, the golf club set of the present invention will be described in detail based on an embodiment shown in the accompanying drawings. FIG. 1 is an explanatory view of a first club group of the present invention, wherein (a) shows a third iron and (b) shows a fourth iron.

  The design concept of the first club group is to increase the flight distance with a high trajectory, and the soft iron forged head has a hollow structure to reduce the center of gravity. The loft angle indicating the inclination angle of the face surface with respect to the shaft axis is 21 ° for the third iron 1a and 24 ° for the fourth iron 1b. The 3rd iron 1a has a lie angle of 60 °, a face progression (FP) of 1.0 mm, a club length of 39.25 inches, and the 4th iron 1b has a lie angle of 60.5 °, The face progression (FP) is 1.0 mm and the club length is 38.75 inches.

  Next, FIG. 2 is an explanatory view of the second club group of the present invention, wherein (a) shows a 5-iron and (b) shows a 6-iron. The second club group composed of the 5th iron 2a and the 6th iron 2b has a design concept of widening the sweet spot, and penetrates the central portion of the soft iron forged head from the front face, which becomes the ball striking face, to the rear. A space, a thin face member is fitted at the front position of the space, and cavities 2a1, 2a2, 2b1, 2b2 are provided in the entire back face. Therefore, the peripheral portion of the head becomes thicker and the sweet spot area of the hitting surface becomes wider, so that even if the ball is hit at a place slightly away from the sweet spot, the variation in the flight distance can be reduced. The loft angle of the fifth iron 2a is 27 °, the loft angle of the sixth iron 2b is 31 °, and the other specifications are as described in FIG.

  On the other hand, as shown in FIG. 3, the third club group composed of the 7th iron 3a and the 8th iron 3b has the cavities 3a1 and 3b1 only in a part of the back face portion of the head portion of the soft iron forging. The area of the cavity is smaller than that of the second club group. Thereby, the third club group can improve the hitting performance by widening the sweet spot, and reduce the functional difference from the fourth club group having no cavity in the back face, thereby ensuring continuity. . The loft angle of the seventh iron 3a is 35 °, the loft angle of the eighth iron 3b is 39 °, and other specifications are as described in FIG.

  Next, FIG. 4 is an explanatory view of the fourth club group of the present invention, wherein (a) shows a ninth iron and (b) shows a pitching wedge. The fourth group of clubs is composed of a 9-iron muscle back 4a and a pitching wedge 4b which have no cavity in the back face in response to a golfer's demand that a club having a cavity has a poor hit feeling or lacks controllability. It is a thing. In the fourth club group, the head portion is made of soft iron forged, the loft angle of the ninth iron 4a is 43 °, and the loft angle of the pitching wedge 4b is 47 °. Other specifications are as described in FIG.

  Finally, FIG. 5A is a diagram illustrating the configuration and specifications of the approach wedge 5a, which is the fifth club group of the present invention, and FIG. 5B is a diagram illustrating the configuration and specifications of the sand wedge 5b. The fifth club group is a teardrop-shaped wedge, and the loft angle of the approach wedge 5a is set to 52 ° and the loft angle of the sand wedge 5b is set to 58 °.

  As described above, in the golf club set of the present invention shown in FIGS. 1 to 5, since the shape of the head is changed every second, the functional difference at the boundary between the ranges is reduced, and the golfer is easy to use. It can be a good ideal combination. For example, the 7th to 8th irons, which are the fourth club group, have cavities along the changing tendency from the adjacent 5th to 6th irons. Improves continuity with the 9-iron club. That is, the golf club set of the present invention has a smooth functional connection from the first club group to the fifth club group.

  In the above-described embodiment, an example in which the club groups are provided every second number in order from the third iron is disclosed. However, the golf club set of the present invention, for example, sets the club groups every second number in the order starting from the second iron. Needless to say, this is acceptable. Further, the shape of the head is not limited to that of the above-described embodiment, and an optimum shape can be appropriately selected according to the design concept.

  The golf club set of the present invention can be applied not only to an iron club set but also to a golf club set including a driver, a fairway wood, a utility club, and the like.

It is an explanatory view of the 1st club group of the present invention, (a) is a figure explaining the shape of the 3rd iron, and (b) is a figure explaining the shape of the 4th iron. It is an explanatory view of the 2nd club group of the present invention, (a) is a figure explaining the shape of the 5th iron, and (b) is a figure explaining the shape of the 6th iron. It is an explanatory view of the 3rd club group of the present invention, (a) is a figure explaining the shape of 7th iron, and (b) is a figure explaining the shape of 8th iron. It is an explanatory view of the 4th club group of the present invention, (a) is a figure explaining the shape of a 9th iron, and (b) is a figure explaining the shape of a pitching wedge. It is an explanatory view of the fifth club group of the present invention, (a) is a diagram illustrating the shape of the approach wedge, (b) is a diagram illustrating the shape of the sand wedge.

Explanation of reference numerals

1a, 1b First club group (3-iron, 4-iron)
2a, 2b 2nd club group (5 iron, 6 iron 2a1, 2a2, 2b1, 2b2 cavity 3a, 3b 3rd club group (7 iron, 8 iron)
3a1, 3b1 Cavities 4a, 4b Fourth club group (9-iron, pitching wedge)
5a, 5b Fifth club group (approach wedge, sand wedge)

Claims (3)

  In a golf club set composed of two or more club groups each having a plurality of golf clubs having heads having shapes similar to each other and having heads having similar shapes and having different head shapes, A golf club set, wherein the club group is provided for each, and the type of head shape is changed.   The golf club set according to claim 1, wherein the iron club and the wedge club are provided with the first, second, third, fourth, and fifth five types of club groups in ascending order of count. , The first club group is a hollow iron having a hollow portion in the head, the second and third club groups are cavity back irons having a cavity in at least a portion of the back face, and the fourth and fifth club groups are A golf club set comprising an iron club or a wedge club of a type having no cavity in the back face. The golf club set according to claim 2, wherein the cavity provided on the back face of the third club group has a smaller area than the cavity provided on the back face of the second club group.

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