JPS5845729Y2 - iron club set - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improved iron club set.

Some conventional iron club heads have a raised central part of the back design part to concentrate the weight in the central part, but in this case the sweet spot is small, and although you can get more distance, you will miss the sweet spot even a little. The disadvantage was that the directionality deteriorated significantly.

In addition, in order to stabilize directionality, there are some types of golf balls that have a wide concave part in the back design to distribute the weight around the periphery, but this results in poor flight distance and tends to lack the strength of the hitting surface.

In recent years, in order to solve these drawbacks, it has been proposed that ribs be provided in the recessed part to strengthen the hitting surface and increase flight distance, but usually iron club sets have almost the same back design for each club. - Therefore, with long irons, which have a long club length and a small loft angle, the inertial force around the shaft axis causes the ball hitting surface of the head to face to the right of the ball's target flight line at impact, causing the ball to enter the ball to the right. In addition, short irons with a short club length and a large loft angle have the disadvantage that the ball hitting surface of the head enters facing left, causing the ball to be hooked to the left. It is conceivable to correct the above-mentioned defects by changing the center of gravity of the golf ball, but if the rib deviates significantly from the hitting surface, the effect of reinforcing the golf ball and increasing flight distance tends to decrease.

In order to eliminate all of the above-mentioned drawbacks, the present invention provides a wide range of recesses in the back design part, and a rib that serves as a weight part and a reinforcing part is integrally formed in this recess, and the position of this rib is determined for each club. Only the shape is changed without changing the head, thereby changing the center of gravity position of the head.

Preferred embodiments of the present invention will be described below based on the drawings.

In the first embodiment shown in FIGS. 1 to 4, around the back design part 3 behind the ball hitting surface 2 of the iron head 1,
The recess 4 is shaped over a wide area leaving the frame 8, and the recess 4 is further expanded.
A rib 5 is integrally provided inside from the toe 6 to the heel 7.

This rib 5 serves both to reinforce the ball-hitting surface 2 and as a weighted portion that determines the center of gravity of the head 1. It is formed approximately in the center of the recess 4 from the toe 6 to the heel 7, and in the case of the long iron 1a, it is closer to the toe 6. Another recess 5a is provided in the center of the rib 5 to form a bifurcated rib 5, and the center of gravity is biased toward the toe 6 side.In the middle iron 1b, the recess 5a is provided in the center to form a separated rib 5. The short iron 1C has two pronged ribs 5 near the heel 7, similar to the long iron 1a, to shift the center of gravity toward the heel.

In the second embodiment shown in FIGS. 5 to 8, the position of the maximum width W is changed for each club without separating the ribs 5 of the first embodiment. As shown in figures 6 to 8, from long iron 1a to short iron 1C
The position is sequentially changed from the toe 6 side to the heel 7 side.

In the third embodiment shown in FIGS. 9 to 12, the shape of the rib 5 of the second embodiment is further simplified, and both sides of the rib 5 are straight, and the maximum width W of the rib 5 is For example, in the middle iron 1b, both sides of the rib 5 are substantially parallel.

In the fourth embodiment shown in FIGS. 13 to 16, a rib 5 whose both sides are substantially parallel is provided with other recesses 5a, 5a in the rib direction on the toe 6 side and the heel 7 side, respectively. ,5
The aim is to change the position of the center of gravity of the head by changing the length of a for each club.

Further, the fifth embodiment shown in FIGS. 17 to 20 is similar to the fourth embodiment.
The number of recesses 5a in the embodiment is reduced to one, and the position of the recess 5a is moved from the heel 7 side to the toe 6 side for each club.

In the sixth embodiment shown in FIGS. 21 to 25, the thickness T of the rib 5 is changed without changing the width W. In the long iron 1a, the wall thickness on the toe portion 6 side is thicker and the heel 7 The sides form a thin tapered surface.

Further, in the seventh embodiment shown in FIGS. 26 to 30, a recess 5a in the rib direction is provided in the rib 5 of the sixth embodiment, and the thickness T of this recess 5a is varied.

Note that the shape of these ribs 5 is not limited to the above embodiment, and may be modified in various ways by attaching a naming plate or taking other design considerations into account.

The present invention is as described above, and by providing a wide range of recesses in the back design of each iron head, and further forming ribs integrally within the recesses, and changing the shape of the ribs, the center of gravity of the iron head is shifted from the long iron. As the iron becomes shorter, it is gradually placed closer to the toe and closer to the heel, so the concave part allows for a larger sweet spot, and the ribs form the weight part, making it possible to obtain more than a certain distance. A strong ball-hitting surface can be formed by reinforcing the concavity, and by changing the shape of each club in the set without changing the position of the ribs, the center of gravity of the head gradually changes from closer to the toe to closer to the heel as you go from long irons to short irons. For example, even with a No. 1 or No. 9 iron, the ribs do not deviate far from the ball hitting surface and sufficient strength can be obtained, and at the time of impact, the inertia force around the shaft axis of the head is adjusted This can be approximated with a club, allowing accurate control of the ball.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the first embodiment, Fig. 2 is a long iron of the same embodiment, Fig. 3 is a middle iron, Fig. 4 is a perspective view of a short iron, and Fig. 5 is a perspective view of the second embodiment. FIG. 6 is a perspective view of the long iron of the same embodiment, FIG. 7 is a perspective view of the middle iron, FIG. 8 is a perspective view of the short iron, FIG. 9 is a perspective view of the third embodiment, and FIG. 10 is a perspective view of the same embodiment. FIG. 11 is a perspective view of a long iron of the same embodiment, FIG. 11 is a middle iron, FIG. 12 is a perspective view of a short iron, FIG. 13 is a perspective view of a fourth embodiment, and FIG. 14 is a long iron of the same embodiment.
Fig. 15 is a perspective view of a middle iron, Fig. 16 is a perspective view of a short iron, Fig. 17 is a perspective view of a fifth embodiment, Fig. 18 is a long iron of the same embodiment, and Fig. 19 is a perspective view of a middle iron and a short iron. Fig. 20 is a perspective view of the short iron, Fig. 21 is a perspective view of the sixth embodiment, and Fig. 22 is a perspective view of the A of the same embodiment.
-A sectional view, Fig. 23 is a BB sectional view of a long iron, Fig. 24 is a BB sectional view of a middle iron, Fig. 25 is a BB sectional view of a short iron, and Fig. 26 is a BB sectional view of a short iron. A perspective view of the embodiment, FIG. 27 is a CC sectional view of the same embodiment, FIG. 28 is a DD sectional view of a long iron, FIG. 29 is a DD sectional view of a middle iron, and FIG. 30 is a sectional view of a long iron. It is a DD sectional view of a short iron. 1...Iron head, 1a...Long iron, 1b...Middle iron, 1C.
...Short iron, 3...Back design part, 4...Concave part, 5...Paris...Rib,
5a... recess, 6... toe, 7...
... Heel, W ... Rib width, T ...
・Thickness of the ribs.

Claims (1)

[Claims for Utility Model Registration] (1) By providing a recess 4 over a wide range in the back design portion 3 of each iron head 1, and further forming a rib 5 integrally within the recess 4, and changing the shape of the rib 5. , an iron club set characterized in that the center of gravity of the iron head 1 is gradually arranged from closer to the toe 6 to closer to the heel 7 as the iron head 1 goes from the long iron 1a to the short iron 1C. 2. The iron club set according to claim 1, wherein the shape of the rib 5 is changed by changing the width W of the rib 5. 3. Utility model registration claim item 1 or 2 in which the shape of the rib 5 is changed by changing the wall thickness T of the front rib 5
Iron club set listed in section. 4. The iron club set according to claim 1, 2, or 3, wherein the shape of the rib 5 is changed by providing a recess 5a in the rib 5.