JPH0623303Y2 - Iron Golf Club Set - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an iron golf club set,
More specifically, the present invention relates to an improvement of an iron golf club set capable of hitting with the same feel through each iron number of an iron golf club and obtaining a flight distance according to the iron number.

[Conventional technology]

Conventionally, when designing an iron golf club head, the distance between the center of gravity of the club head and the shaft axis is
It may be considered as a factor of club characteristics.

[Problems to be solved by the invention]

However, in the conventional iron golf club set, there is no one in which the distance between the center of gravity of the club head and the shaft axis line from the long iron to the short iron is designed to be constant throughout the iron golf club set,
The sequence of distances generally depends on the outcome.

The inventors of the present invention repeatedly conducted trial hitting experiments using a monitor while changing the distance between the center of gravity of the club head of the iron golf club set and the shaft axis line for each club set, and as a result, hit the clubs as a whole. The result shows that the distance between the center of gravity of the club head and the shaft axis should be designed as an important factor among other design factors of the club head in order to obtain the ease of equalization.

This invention was devised by focusing on such conventional problems, and it is possible to hit with the same feeling through each count of the iron golf club set, and a predetermined flight distance according to the club count. It is an object of the present invention to provide an iron golf club set which can be obtained, and which has good hitting directionality and flight distance.

[Means for Solving the Problems]

In order to achieve the above object by the present invention, in the iron golf club set in which the loft angle is gradually increased according to the count, the center of gravity of the club head of the iron golf club and a line vertically lowered from the center of gravity to the shaft axis line are formed. The gist of the present invention is that the distance between the intersections is designed to be substantially constant throughout all club counts or most club counts so that the ball can be hit with the same feeling through each count of the iron golf club set.

[Function of device]

The present invention is configured as described above, and the distance between the center of gravity of the club head and the shaft axis is incorporated as one factor in designing the club head of the iron golf club set, and the above distance is set for all club counts. Or, by setting it to be almost constant through most club counts, it is possible to hit the ball with the same feeling through each count and obtain a predetermined flight distance according to each club count. It is characterized by a good flight distance.

[Example of device]

 An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is an overall perspective view of an iron golf club embodying the present invention, and FIG. 2 is an enlarged front view of a club head portion, where 1 is a club head, 2 is a club shaft, and X-
X indicates the axis of the club shaft 2, and O indicates the center of gravity of the club head 1.

In this invention, throughout the iron golf club set, the distance between the center of gravity O of the club head 1 and a line drawn from the center of gravity O perpendicular to the shaft axis is set to be substantially constant.

The range of the above distance is preferably within ± 1 mm, preferably within ± 0.5 mm, and the distance is set to 35 mm to 40 mm, preferably 36 mm to 39 mm.

As described above, by setting the distance substantially constant throughout the iron golf club set, it is possible to hit the ball with the same feeling through each count, and at the same time, a predetermined flight corresponding to each club count can be achieved. The distance can be obtained, and the directionality of the hit ball and the flight distance can be improved.

FIG. 3 and FIG. 4 are graph explanatory views comparing the conventional iron golf club set and the iron golf club set of the present invention, and FIG. 3 is a conventional iron golf club set.
It shows the distance between the center of gravity O of the club head 1 of the golf club set and a line perpendicular to the shaft axis from the center of gravity O. Two sets (line A and line B in the figure) of iron golf Shows a club set.

As is apparent from FIG. 3, in the conventional iron golf club set, the distance varies throughout the entire club set, and it can be seen that the golf club was manufactured according to circumstances.

On the other hand, in the iron golf club set of the present invention shown in FIG. 4, the distances are approximately constant at around 37 mm and around 38 mm as shown by the lines C and D in the figure. As a result of trial-striking the constructed iron golf club set, the results shown in Table 1 below were obtained.

[Implementation conditions]

We created five types of iron golf clubs in Table-1 that allowed the weight of the club bed to be moved from the toe side (club head tip side) to the heel side (club head shaft connection side). By moving the weights in sequence, the distance between the center of gravity O of the club shaft 2 and the center of gravity O of the club shaft 2 is moved from 32 mm to 42 mm at intervals of 1 mm, and a trial hit is performed. The feeling and flight distance were measured.

As a result, for each club shown in Table 1 above, the just meat feeling is good between 35 mm and 40 mm.
It was better between 37 mm and 39 mm. It was also confirmed that a high flight distance could be obtained during this time.

The testers (monitors) also obtained similar results from beginners to advanced users.

However, the distance that gives the best feel when hitting a ball between beginners and advanced players is slightly different, around 37 mm for advanced players and around 38.5 mm for beginners. It has been found that the person who prefers the heel is preferred to be slightly closer to the heel.

[Effect of device]

In the iron golf club set in which the loft angle gradually increases according to the count as described above, the distance between the center of gravity of the club head of the iron golf club and the intersection point of the line perpendicular to the shaft axis from the center of gravity However, since it is set to be almost constant throughout all club counts or most club counts, it is possible to hit with the same feeling through each count of the iron golf club set,
There is an effect that a predetermined flight distance can be obtained according to the club count, and further the directionality of the hit ball and the flight distance are good.

[Brief description of drawings]

FIG. 1 is an overall perspective view of an iron golf club embodying the present invention, FIG. 2 is an enlarged front view of a club head, and FIGS. 3 and 4 are conventional iron golf club sets and the present invention. It is a graph explanatory view comparing with the iron golf club set. 1 ... Club head, 2 ... Club shaft, XX ...
… Axis of club shaft, O… Center of gravity of club head,
...... The distance between the center of gravity of the club head and the intersection of the line drawn from the center of gravity perpendicular to the shaft axis.

Claims (3)

[Scope of utility model registration request] 1. In an iron golf club set in which the loft angle gradually increases according to the count, the distance between the center of gravity of the club head of the iron golf club and the intersection point of the line perpendicular to the axis of the shaft from the center of gravity is the total. An iron golf club set that is set to be almost constant throughout club count or most club counts. 2. The iron golf club set according to claim 1, wherein the range of the distance between the center of gravity of the club head and the intersection of the line drawn vertically from the center of gravity to the shaft axis is ± 1 mm or less. . 3. The distance between the center of gravity of the club head and the line of intersection from the center of gravity of the club head perpendicular to the axis of the shaft,
The iron golf club set according to claim 1, wherein the iron golf club set is 35 mm to 40 mm.