JP4190063B2 - Iron club set - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an iron club set in which the form of a cavity for each count in a set of iron clubs provided with a cavity behind a face surface is devised.
[0002]
[Prior art]
Iron clubs are increasing in size in order to prevent shot mistakes and improve the direction of hitting balls. At this time, in order to prevent an increase in the weight of the head, a concave portion called a cavity is provided behind the head, and a material having a low specific gravity and a high strength such as a titanium alloy is used for the face surface to be a striking surface. Yes. Thus, in the conventional cavity iron head, as shown in the rear view of FIG. 7 and the cross-sectional view of FIG. A face surface 102 made of a high-strength and light-weight material is disposed on the front surface so as to be supported by the head main body 100, and a single cavity 103 is formed by the face surface 102 and the through-hole 101.
[0003]
[Problems to be solved by the invention]
However, in the case of long irons, the specification is focused on the flight distance, the shaft is long and the head speed increases, and when the hit point is on the toe 104 side, the face 102 is rotated clockwise by the impact of hitting the ball. A large distortion (in the case of right-handed hitting) occurs, and the hit ball tends to fly to the right, and the loss of hitting energy tends to increase and the flight distance tends to decrease. On the other hand, in short irons, the direction of the hit ball and the accuracy of the landing point are emphasized, and the head needs to be operated freely. Therefore, it is easy to hit the ball near the heel 105 of the face 102 and the shot tends to fly off to the left. There is (if you are right-handed).
[0004]
Therefore, in order to correct such a tendency, it is conceivable to increase the moment of inertia by increasing the head weight on the toe 104 side or the heel 105 side, thereby reducing the distortion of the face surface 102. If it is going to be performed under the condition of minimizing the weight of the head main body 100, it is necessary to move the cavity 103, in particular, the position of the through hole 101 to the toe 104 side or the heel 105 side. However, since the size of the cavity 103 is set to be as large as possible in order to minimize the weight of the head body 100, the movement of the cavity 103 may cause the head body 100 that supports the face surface 102. The support width W on the inner peripheral side of the head may be reduced to cause a problem that the durability of the face surface 102 and the durability of the head main body 100 at the time of impact are lowered.
[0005]
Furthermore, the center of the cavity 103 and the center position of the face surface 102 are shifted, making it difficult to hold at the address, and there is a possibility that a misshot may be caused.
[0006]
Therefore, in view of such a situation, the object of the present invention is to maintain the durability of the head and minimize the weight of the head, and then determine the cavity according to the order of the club numbers in the club set. It is an object of the present invention to provide an iron club set that is easy to set up and easy to hit by changing the form and placing weight on the toe side or heel side.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides an iron club set having a head including a face surface, a head body that supports the face surface, and a cavity formed behind the face surface, wherein the cavity is a head. A first cavity that forms a through hole in the main body and a second cavity formed by a wall surface that is continuous with the through hole, and the face surface is connected to a peripheral rib that is thickened around the head main body. is supported by a ring-shaped second cavity forming part formed Te, with the center of the face surface of the first cavity matches the shape of the peripheral edge rib is constant between count, the second cavity of the form of the wall it is changed in accordance with the club count, in the set, count is small enough iron club increases the weight of the toe side is also the weight of the heel side is reduced, turn The weight of the toe side is gradually decreased in accordance becomes large iron club is obtained as the weight of the heel side is gradually increased. An iron club set having a head including a face surface, a head body supporting the face surface, and a cavity formed behind the face surface, wherein the cavity forms a through hole in the head body. And a second cavity formed by a wall surface connected to the through-hole, and a ring-shaped second cavity formed by connecting the face surface to a peripheral rib having a thickness around the head body. supported by the forming portion, with the centers of the face surface of the first cavity are matched, the shape of the wall forms a circumferential edge rib of the second cavity is varied in accordance with the club count, in the set, a small count Iron clubs are heavier on the toe side and smaller on the heel side, and the weight on the toe side gradually increases as the iron club becomes larger. Is small is obtained as the weight of the heel side is gradually increased.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of an iron club set according to the present invention will be described with reference to FIGS. The iron club set is composed of # 1 to # 9 and 11 pieces of PW (pitching wedge) and SW (sand wedge), and the description of the embodiment is the representative of the long iron No. 5 (# 5) iron, The 9th (# 9) iron is taken up as a representative of the short iron, and the 7th (# 7) iron is taken up as a club in the middle.
[0009]
FIG. 1 shows a rear view of a # 5 iron head according to the present invention. In the figure, a through hole 2 is engraved in the central portion of the head body 1, and a face surface 3 is disposed on the front surface of the head body 1 so as to close the through hole 2. Behind the head is provided a cavity formed by a back surface 3A of the face surface 3, the through hole 2 and a wall surface connected to the through hole 2. Thus, the cavity is composed of the first cavity 4 formed by the through-hole 2 and the second cavity 5 formed by the wall surface.
[0010]
The face surface 3 is supported by an inner peripheral side portion of the ring-shaped wall surface (second cavity 5 forming portion) formed continuously with the peripheral rib 6 which is thick around the head body 1 (see FIG. 2 to 4).
[0011]
The size of the through hole 2 that forms the first cavity 4 is preferably as large as possible in order to reduce the weight of the head. On the other hand, because of the durability of the face surface 3 at the time of impact, the wall surface (second The width at which the cavity 5 forming portion) supports the face surface 3 is empirically required to be at least 5 mm or more, and the support width W is subtracted from the peripheral edge 3B of the face surface 3 so as to have a maximum size. (See FIG. 3). Further, in this embodiment, the position of the through hole 2 and therefore the first cavity 4 with respect to the face surface 3 is fixed so that the center of the area of both of them substantially coincides.
[0012]
The form (width) of the peripheral rib 6 formed around the head main body 1 is thick and the same width in all the clubs in the set in consideration of the durability required for the usage of the iron club. . Thus, the wall surface of the second cavity 5 is formed in a ring shape around the first cavity 4, and like the # 5 iron shown in FIG. As the count in the set decreases, the wall thickness on the toe 7 side gradually increases to increase the weight of the toe 7 portion, and as the count increases as shown in # 9 iron in FIG. The thickness of the side wall surface is gradually increased to increase the weight of the heel 8 portion.
[0013]
FIG. 4 shows an example of a # 7 iron as an intermediate count between the # 5 iron and the # 9 iron. In this case, the wall surface (the portion where the second cavity 5 is formed) is an intermediate form between the # 5 and # 9 irons. In the club set of the present embodiment, the club shape of each count is set as described above. Therefore, in the long iron, the weight on the toe 7 side increases and the moment of inertia at this portion is large, and the face surface 3 at the time of hitting is large. In addition to reducing the clockwise distortion of the ball, it is easy to return the head when swinging, and the hitting of the hit ball in the right direction (in the case of right hit) is suppressed. In addition, in the short iron, the weight on the heel 8 side is increased and the moment of inertia of this portion is large, in addition to reducing the counterclockwise distortion of the face surface 3 at the time of hitting and suppressing the ball coming off to the left. In this case, the distance from the shaft axis to the center of gravity of the head is shortened, the operability of the club is improved, and various approach shots are easily performed. Further, the first cavity 4 having a larger area makes the head lighter, the center of the large first cavity 4 coincides with the center of the face surface 3, and the shape of the peripheral rib 6 of the head body 1 is constant between counts. Therefore, it is easy to set the ball at the center of the face surface 3 at the time of addressing, and miss shots can be prevented.
[0014]
Next, another embodiment will be described with reference to FIGS. 5 and 6 show a cross section corresponding to the cross section taken along the line AA of FIG. 1, as in FIGS. In this embodiment, the shape of the peripheral rib 6 of the head body 1 is also changed when changing the shape of the wall surface of the second cavity 5 in order to deviate toward the toe 7 side or the heel 8 side. As a result, the center of the second cavity 5 is shifted and the position of the second cavity 5 is moved with respect to the first cavity 4. That is, FIG. 5 is a cross-sectional view of a # 5 iron, and the weight of the toe 7 side is increased while the width of the peripheral rib 6 is increased on the toe 7 side, while the width of the peripheral rib 6 is reduced on the heel 8 side. Weight has been reduced. FIG. 6 is a cross-sectional view of a # 9 iron, in which the weight of the toe 7 side is reduced while the width of the peripheral rib 6 on the toe 7 side is reduced, while the width of the peripheral rib 6 is increased on the heel 8 side. The weight on the heel 8 side is increased. This example is characterized in that the weight of the head main body 1 can be more effectively distributed toward the toe 7 side or the heel 8 side.
[0015]
【The invention's effect】
As described above, according to the present invention, an iron club set having a head including a face surface, a head body that supports the face surface, and a cavity formed behind the face surface, the cavity being a head A first cavity that forms a through hole in the main body and a second cavity formed by a wall surface that is continuous with the through hole, and the face surface is connected to a peripheral rib that is thickened around the head main body. is supported by a ring-shaped second cavity forming part formed Te, with the center of the face surface of the first cavity matches the shape of the peripheral edge rib is constant between count, the second cavity of the form of the wall is changed in accordance with the club count, in the set, the weight of the large weight of the toe side is higher count is less iron club also heel side is small, count Since a large weight is reduced the weight of the toe side with increasing the iron club is gradually heel side is to be gradually increased, the form of the cavity in response to the count of the order of the club set to improve club performance When changing the shape of the second cavity, it is possible to change the shape of only the second cavity without impairing the durability of the face surface and the head body and maintaining the head weight to a minimum. This is because the through hole of the first cavity that defines the back surface of the face body that is not supported by the wall surface of the head body, that is, the second cavity, can be fixed to the optimum size and position for the durability. Therefore, the head weight can be easily moved to the toe or heel side.
[0016]
According to a second aspect of the present invention, there is provided an iron club set including a head including a face surface, a head body that supports the face surface, and a cavity formed behind the face surface, the cavity being a head body. A first cavity that forms a through-hole and a second cavity formed by a wall surface that is coupled to the through-hole, and the face surface is connected to a peripheral rib that is thickened around the head body. formed is supported by a ring-shaped second cavity forming part, together with the center of the face surface of the first cavity are matched, the change of the shape of the wall forms a circumferential edge rib of the second cavity according to club count In the set, the iron club with a smaller count has a larger weight on the toe side and a smaller heel side, resulting in an iron club with a larger count. The weight of the toe side is gradually decreased because as the weight of the heel side is gradually increased I, the weight of the overemphasis of the head body to the toe side or heel side can be performed more effectively. Furthermore, both the invention according to claim 1, 2, as yarn count within the club set is small (long irons side) ing, to increase the weight of the toe side, so arranged to reduce the weight of the heel side In a long iron, the weight on the toe side increases, the moment of inertia of this part increases, and the distortion of the face surface at the time of hitting is prevented. However, the hit ball is large and does not come off in the right direction (in the case of right hit). On the other hand, in the case of a short iron with a large count, the weight on the heel side is increased, and therefore the moment of inertia of this part is increased. There is nothing.
[0017]
Furthermore, as described in claims 1 and 2 , in the case where the center of the first cavity coincides with the center of the face surface, in addition to the above-described operation and effect, the shape of the cavity is not confused at the time of addressing. A ball is easily set in the center of the face surface to prevent a miss shot. Further, since the face surface is uniformly supported by the wall surface at the center, durability of the face surface and the head body itself is improved.
[Brief description of the drawings]
FIG. 1 is a rear view of a head showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 and showing a # 5 iron.
3 is a cross-sectional view taken along line AA in FIG. 1 and showing a # 9 iron. FIG.
4 is a cross-sectional view taken along line AA in FIG. 1 and showing a # 7 iron. FIG.
FIG. 5 is a cross-sectional view of a # 5 iron showing another embodiment.
FIG. 6 is a cross-sectional view of a # 9 iron.
FIG. 7 is a rear view of a head showing a conventional example.
8 is a sectional view taken along line BB in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Head main body 2 Through-hole 3 Face surface 4 1st cavity 5 2nd cavity 6 Peripheral rib 7 Toe 8 Heel

Claims (3)

An iron club set having a head composed of a face surface, a head body supporting the face surface, and a cavity formed behind the face surface,
The cavity is composed of a first cavity that forms a through hole in the head body and a second cavity formed by a wall surface that is coupled to the through hole,
The face surface is supported by a ring-shaped second cavity forming portion formed continuously with a peripheral rib that is thick around the head body,
With the center of the face surface of the first cavity matches the shape of the peripheral edge rib is constant between count,
The shape of the wall surface of the second cavity is changed according to the club number ,
In the set, the iron club with a smaller count has a larger weight on the toe side and a lower weight on the heel side, and the weight on the toe side is gradually decreased and the weight on the heel side is gradually increased as the iron club has a larger count. iron club set, characterized in that it was so that. An iron club set having a head composed of a face surface, a head body supporting the face surface, and a cavity formed behind the face surface,
The cavity is composed of a first cavity that forms a through hole in the head body and a second cavity formed by a wall surface that is coupled to the through hole,
The face surface is supported by a ring-shaped second cavity forming portion formed continuously with a peripheral rib that is thick around the head body,
With the center of the face surface of the first cavity are matched, the shape of the wall forms a circumferential edge rib of the second cavity is varied in accordance with the club count,
In the set, the iron club with a smaller count has a larger weight on the toe side and a lower weight on the heel side, and the weight on the toe side is gradually decreased and the weight on the heel side is gradually increased as the iron club has a larger count. An iron club set characterized by that. As the count in the set of the wall of the second cavity decreases, the wall thickness on the toe side gradually increases, the weight of the toe portion increases, and as the count increases, the wall thickness of the heel side wall increases. 3. The iron club set according to claim 1, wherein the iron club set is gradually thickened to increase the weight of the heel portion .

Images