KR102713894B1 - Golf Club Head and Golf Club Set - Google Patents

Abstract

The present invention provides a golf club head and a golf club set capable of lowering CG to lower the sweet spot and increasing MOI, and in one embodiment, provides a golf club head including a body including a crown, a sole and a hollow interior, a weight portion connected to an inner surface of the sole of the body, and a face portion connected to the body, wherein the weight portion includes a first weight portion including a weight bar disposed adjacent to the face portion and a plurality of weight rails extending in an opposite direction from the face portion.

Description

{Golf Club Head and Golf Club Set}

The present invention relates to a golf club head and a golf club set including the same, and relates to a golf club head and a golf club set that are easy to use for beginners and intermediate players.

Unlike advanced golfers and professionals who can freely control the ball in golf, amateur golfers, who make up the majority of the golf population, often fail to accurately hit the sweet spot when striking the ball with the head face.

If you miss the sweet spot, the ball will not fly well or you will not be able to send the ball far enough to hit the club. This is why there is a need for a club head that is easy to use for beginners or intermediate players.

Forgiveness is determined by the location of the CG (center of gravity) and the MOI (moment of inertia) value on the golf club head, but the club head has a limited head size and there are limits to changing the thickness, so adjustments are inevitably limited.

Patent document 1 discloses a structure for having a low forward CG. When the CG is positioned forward and lowered, the sweet spot position is lowered, which may be advantageous in lifting the ball, but there is a limitation in that the MOI is reduced, which reduces tolerance.

(Patent Document 1) US 8926448 B

The present invention is intended to solve the limitations of the above-mentioned prior art, and aims to provide a golf club head and a golf club set capable of lowering the center of gravity, lowering the sweet spot, and increasing the moment of inertia.

In order to achieve the above-mentioned purpose, the present invention provides the following golf club head and golf club set.

The present invention, in one embodiment, provides a golf club head including a body including a crown, a sole and a hollow interior, a weight portion connected to an inner surface of the sole of the body, and a face portion connected to the body, wherein the weight portion includes a first weight portion including a weight bar disposed adjacent to the face portion and a plurality of weight rails extending in an opposite direction from the face portion.

In one embodiment, a weld seam is disposed between the weight bar and the face portion, connecting the face portion to the body, so that the weight bar can be disposed apart from the face portion.

In one embodiment, the weight portion includes a second weight portion connected to the rear of the sole, the weight rail includes a first weight rail and a second weight rail, the first weight rail is disposed further from the toe side than the center of the body in a second direction connecting the heel side and the toe side, and the second weight rail is disposed further from the heel side than the center of the body, such that the first and second weight rails can be spaced apart in the first direction.

In one embodiment, a separation distance between the first weight rail and the second weight rail in the second direction may be between 10 and 50% of the length of the head in the second direction.

In one embodiment, the weight bar and the first and second weight rails may have a wider width as they get closer to the sole.

In one embodiment, the second weight portion may be positioned centrally in the first direction and may include a weight body that is replaceable by a screw.

In one embodiment, the weight bar includes a front inclined surface and a rear inclined surface, and a first angle formed by the front inclined surface with respect to the vertical direction is smaller than a second angle formed by the rear inclined surface with respect to the vertical direction, so that the front inclined surface can be formed at a steeper angle than the rear inclined surface.

In one embodiment, the first and second weight rails extend to the second weight portion, and a maximum width of the first and second weight rails may be less than a maximum width of the weight bar.

In one embodiment, the first and second weight rails can extend to a position spaced from the rear of the sole, the body includes a recessed portion extending in a first direction toward the face portion on both sides of the second direction of the second weight portion based on the hollow interior, and the first and second weight rails can be formed at least partially in the recessed portion.

In one embodiment, the weight bar may have a length in the first direction that increases from the heel side to the toe side, and the weight of the first weight portion may be between 40 and 80 g or between 18 and 32% of the total weight of the head.

In one embodiment, the weight bar includes a pair of protrusions extending rearwardly from the first end portions of the weight bar and protruding into the interior of the sole, and the groove portion can be formed between the protrusions and the second weight portion.

The present invention relates to a golf club set including a plurality of heads having different loft angles, wherein the heads have the golf club head shape described above, and the weight of the first weight portion in the head increases as the loft angle increases, and the thickness of the weight bar in the head can increase as the loft angle increases.

The present invention can provide a golf club head and a golf club set that can easily lift a ball while increasing tolerance and are easy to manufacture through the above configuration.

Figures 1a and 1b are vertical and horizontal cross-sectional views of a golf club head.
Figures 2a and 2b are vertical and horizontal cross-sectional views of different golf club heads.
FIG. 3 is a perspective view of a golf club head according to an embodiment of the present invention.
FIG. 4 is an exploded perspective view of a golf club head according to one embodiment of the present invention.
FIG. 5 is a side view of a golf club head according to an embodiment of the present invention.
FIG. 6 is a plan view of a golf club head according to an embodiment of the present invention.
Figure 7 is a cross-sectional view taken along line AA' of Figure 5.
Figure 8 is a cross-sectional view along line BB' of Figure 6.
Figure 9 is a cross-sectional view along line CC' of Figure 6.
Figure 10 is a cross-sectional view along line DD' of Figure 6.
FIG. 11 is a horizontal cross-sectional view of a golf club head according to another embodiment of the present invention.
Figure 12 is a cross-sectional view along line EE' of Figure 11.

Hereinafter, specific embodiments of the present invention will be described with reference to the attached drawings. However, the spirit of the present invention is not limited to the presented embodiments, and those skilled in the art who understand the spirit of the present invention will be able to easily propose other regressive inventions or other embodiments included within the scope of the spirit of the present invention by adding, changing, or deleting other components within the scope of the same spirit, but this will also be considered to be included within the scope of the spirit of the present invention.

In addition, throughout the specification, when a component is said to be 'connected' to another component, it means not only that these components are 'directly connected', but also that they are 'indirectly connected' with other components in between. Also, when a component is said to 'include', it means that other components may be included, rather than excluding other components, unless otherwise specifically stated.

Figures 1a and 1b illustrate vertical and horizontal cross-sections of a golf club head. In the present invention, the first direction (X) refers to the forward and backward direction, which means the direction in which the ball is struck by the face portion (30), the second direction (Y) refers to the direction connecting the toe side and the heel side of the face portion (30), and the third direction (Z) refers to the vertical direction in the height direction.

Golf clubs, such as fairway woods, utilities, and hybrids, include a head (10) that is formed convexly rearward in the front-back direction (X). The head (10) is connected to a shaft (not shown), and a user holds a grip connected to one end of the shaft and swings it to hit a ball with the head (10).

The head (10) includes a body (20) and a face portion (30), and the body (20) and the face portion (30) are combined to form the head (10). A neck portion (60) is formed in the body (20), and a shaft is combined with the head (10) through the neck portion (60).

The head (10) can be designed in various ways, and it is possible to change the center of gravity (CG) of the head (10) by adjusting the thickness of the head (10) by location. Normally, the location of the sweet spot is determined by the center of gravity (CG), and when the center of gravity is lowered, the sweet spot goes down, which makes it easier for the user to lift the ball. In order to lower the center of gravity (CG), specifically, the thickness of the upper and lower parts of the body (20) of the head (10) can be changed, or the structure of the sole (21) of the lower part of the body (20) can be changed, thereby changing the center of gravity (CG) of the head (10). However, since it may be difficult to change the location of the center of gravity (CG) by only changing the thickness of the head (10), as shown in FIGS. 1a and 1b, a method of lowering the center of gravity (CG) by providing a weight part (50) on the inside of the sole (21) of the body (20) can be considered.

Meanwhile, in the design of the head (10), the moment of inertia (MOI) is important along with the center of gravity (CG). As the moment of inertia (MOI) increases, even if it is not a straight shot, the shaking can be minimized, thereby increasing the tolerance. Normally, when the center of gravity is close to the face (30), the tolerance decreases, and when it is farther away, the tolerance increases.

In FIGS. 1a and 1b, a structure is disclosed for lowering the center of gravity (CG) while increasing the moment of inertia (MOI). This structure lowers the center of gravity while increasing the moment of inertia (MOI) by arranging a weight (50) on the inner surface of the sole (21) centered on an additional weight (40) located rearward in the first direction (X).

Since the sweet spot (SS) is formed at the point where the line (L) perpendicular to the face surface (31) passing through the center of gravity (CG) intersects the face surface (31), in the case of FIGS. 1a and 1b, although the center of gravity (CG) is lowered, since the center of gravity (CG) is formed at the rear, there is a problem in that the distance that the sweet spot (SS) formed on the face surface (31) rises from the center of gravity (CG) increases, making it difficult to lift the ball when hitting the ball with the head (10).

Meanwhile, FIGS. 2a and 2b illustrate horizontal and vertical cross-sectional views of different golf club heads.

The golf club head (10) of FIGS. 2a and 2b has the same shape as FIGS. 1a and 1b except for the shape of the weight portion (50). The golf club head (10) includes a weight bar (51) as the weight portion (22) so that the center of gravity (CG) is positioned lower at a position adjacent to the face portion (30) to lower the position of the sweet spot (SS). The weight bar (51) extends in a second direction (Y) from the heel side (39) toward the toe side (38), and is positioned on the front side of the body (20) at a predetermined distance for welding the face portion (30) and the body (20).

For the convenience of manufacturing, the weight bar (51) has an inclined surface (51a, 51b) whose width in the front-back direction becomes smaller from the bottom to the top, and the upper surface (51c) can be formed flat.

In the case of such a weight bar (51), the center of gravity (CG) can be brought forward so that the position of the sweet spot (SS) where the line (L) perpendicular to the face surface passes through the center of gravity (CG) and intersects the face surface can have a smaller height difference from the center of gravity (CG), but in order to concentrate the weight forward, the height of the weight bar (51) must be increased so that the position of the center of gravity (CG) itself can be higher than in FIGS. 1a and 1b, and the center of gravity (CG) moves to the front so that the moment of inertia (MOI) decreases. Therefore, although it can be advantageous in launching the ball, there is a problem in that the tolerance is reduced and it is not suitable for use by beginners and intermediate players.

The present invention provides a golf club head (10) that is easy to manufacture and increases forgiveness by increasing the moment of inertia (MOI) while lowering the sweet spot (SS) location by bringing the center of gravity (CG) close to the face surface.

FIGS. 3 to 10 illustrate a golf club head (10) according to an embodiment of the present invention.

Specifically, FIG. 3 illustrates a perspective view of a golf club head according to an embodiment of the present invention, FIG. 4 illustrates an exploded perspective view of a golf club head according to an embodiment of the present invention, FIG. 5 illustrates a side view of a golf club head according to an embodiment of the present invention, FIG. 6 illustrates a plan view of a golf club head according to an embodiment of the present invention, and FIGS. 7 to 10 illustrate cross-sectional views taken along lines A-A' to D-D' of FIG. 5 or FIG. 6.

A golf club head (10) according to an embodiment of the present invention has no difference in appearance from the golf club head (10) of FIGS. 1 and 2. As shown in FIGS. 3 to 6, a golf club head (10) according to an embodiment of the present invention includes a body (20) and a face portion (30) connected to the front of the body (20). The body (20) includes a sole (21) at the bottom, a crown (22) at the top, a neck portion (60), and a hollow interior (25), and the face portion (30) includes a face surface (31), a toe side (38), and a heel side (39).

Since the body (20) is formed to have a streamlined shape, a configuration additionally formed on the body (20) is inserted into a protrusion (23) protruding into the hollow interior (25) of the body (20). In this embodiment, a protrusion (23) is formed on the inner surface of the body (20). Specifically, the protrusion (23) includes a first protrusion (23a) for mounting an additional weight (40) on the lower rear surface of the body (20) and a second protrusion (23b) for inserting a decoration or guide.

The body (20) includes a weight part (50) arranged on the inner surface of the sole part (21) and an additional weight part (40) changeably mounted on the outer surface of the sole part (21). The weight part (50) is a configuration additionally formed on the sole part (21) of the head (20), and is integrally formed with the same material as the sole part (21), but is not limited thereto, and may be formed with a structure mounted on the sole part (21).

The additional weight part (40) includes a weight body (41) and a bolt (42) and a washer (43) for mounting the weight body (41) to the body (20), and allows the user to change the weight body (41) to customize it to a desired weight.

The weight unit (50) includes a weight bar (51) extending in the second direction (Y) and first and second weight rails (52, 53) extending rearwardly in the first direction (X) from the weight bar (51).

A welding seam (W) is arranged between the weight bar (51) and the face portion (30) to connect the face portion (30) to the body (20), so that the weight bar (51) is arranged at a fourth distance (l4) from the face portion (30). The weight bar (51) is positioned at a position where welding is possible, and since the fourth distance (l4) is in the range of several millimeters, it is preferable to arrange it close to the face portion (30).

As shown in Fig. 8, the weight bar (51) includes a first inclined surface (51a) facing the face portion (30), a second inclined surface (51b) on the opposite side, and an upper surface (51c), and as the hollow inner space (25) of the body (20) increases from the heel side to the toe side, the first direction width of the weight bar (51) can also increase.

In addition, the first inclined plane (51a) and the second inclined plane (51b) may have a structure in which the width of the weight bar (51) becomes wider as it gets closer to the sole (21) by being inclined at first and second angles (α1, α2) with respect to the vertical direction. At this time, the first angle (α1) formed between the first inclined plane (51a) and the vertical direction may be formed smaller than the second angle (α2) formed between the second inclined plane (51b) and the vertical direction, and through this, the weight bar (51) may be formed to be biased toward the face portion (30) as a whole. In this case as well, for ease of manufacturing, the first and second inclined planes (51a, 51b) are formed to have a converging structure. The boundaries between the first and second inclined planes (51a, 51b) and the upper surface (51c) are rounded so that the weight bar (51) is formed without having a bent portion as a whole.

As shown in Fig. 7, the first weight rail (52) extends in the first direction (X) from the toe side with respect to the center of the second direction (Y) of the body (20), and the second weight rail (53) extends in the first direction (X) from the heel side with respect to the center of the second direction of the body (20).

The first weight rail (52) and the second weight rail (53) are arranged to be spaced apart from each other by a first distance (l1) in the second direction (Y), and the first and second weight heads (52, 53) are arranged to be spaced apart from the heel side and toe side ends of the hollow interior (25) by a second distance (l2) and a third distance (l3), respectively.

The above first distance (l1) may be between 10% and 50% of the distance in the second direction (Y) of the head (10), and when the first distance (l1) is less than 10%, the moment of inertia (MOI) increased relative to the center of gravity (CG) moved backward by the first and second weight rails (52, 53) becomes small, which is disadvantageous for tolerance and launcher, and when it exceeds 50%, the second distance (l2) and the third distance (l3) at which the first and second weight rails (52, 53) are spaced from the heel side and toe side ends of the hollow interior (25) become small, so that the space on both sides becomes small, and the hitting sound generated when the head (10) hits the ball becomes worse, which may lower user satisfaction.

As shown in Fig. 10, the first and second weight rails (52, 53) are configured such that the second direction width increases the closer they are to the sole (21), similar to the weight bar (51). By being configured in this way, the manufacturability of the body (20) can be improved. The first and second weight rails (52, 53) each include a first inclined surface (52a, 53a), a second inclined surface (52b, 53b), and an upper surface (52c, 53c) between the first and second inclined surfaces (52a, 52b, 53a, 53b). In this case, the angle (β1) formed between the first inclined surface (52a, 53a) and the vertical direction and the angle (β2) formed between the second inclined surface (52b, 53b) and the vertical direction can be configured similarly.

The first and second weight rails (52, 53) extend to the additional weight portion (40). Specifically, the first and second weight rails (52, 53) extend from the weight bar (51) to a groove (24) between the first protrusion (23a) and the second protrusion (23b) for mounting the additional weight portion (40). That is, a part of the first and second weight rails (52, 53) is configured to be located in the groove (24). If the second protrusion (23b) is not present, it may extend to the first protrusion (23a) and may have a structure in which the weight portions (40, 50) are connected.

As shown in FIGS. 9 and 10, the maximum width of the first and second weight rails (52, 53) is configured to be smaller than the maximum width of the weight bar (51), and the height (l6) of the first and second weight rails (52, 53) is configured to be smaller than the height (l5) of the weight bar (51), so that the weight by the weight bar (51) is configured to be larger than the weight by the first and second weight rails (52, 53). That is, since the material of the weight portion (50) is the same, the volume of the first and second weight rails (52, 53) is configured to be smaller than the volume of the weight bar (51), so that the overall additional weight by the weight portion (50) is concentrated toward the weight bar (51) adjacent to the face portion (30), so that the location of the center of gravity (CG) is positioned forward.

In this embodiment, in order to prevent the center of gravity (CG) from rising as shown in FIGS. 2a and 2b when increasing the weight only with the weight bar (51), the first and second weight rails (52, 53) are provided in addition to the weight bar (51), so that the height of the weight bar (51) is increased so that the center of gravity (CG) does not rise, while increasing the moment of inertia (MOI) and securing tolerance.

The present invention includes a golf club set having a plurality of the golf club heads (10) described above. The weight of the weight portion (50) may vary depending on the club number, and as the club number increases, i.e., as the angle formed by the face surface (31) with the vertical direction increases, the weight may increase, and the weight may be between 40 and 80 g, or within a range of 18 to 32% of the total weight of the head (10).

FIGS. 11 and 12 illustrate a horizontal cross-sectional view of a golf club head according to another embodiment of the present invention and a cross-sectional view taken along the line E-E' of FIG. 11. The embodiments of FIGS. 11 and 12 have a similar overall head (10) shape to the heads of FIGS. 3 to 10, but have different loft angles, so that the weight added by the weight portion (50) increases and the shape of the weight portion (50) changes. Therefore, the description will focus on this.

The heads of FIGS. 11 and 12 and the heads of FIGS. 3 to 10 may be golf club heads with different numbers that fit into one set of golf clubs. For example, the heads of FIGS. 3 to 10 may be No. 2 utilities, and those of FIGS. 11 and 12 may be No. 5 utilities.

As shown in Fig. 11, the structure of the basic weight portion (50) is the same in that it includes a weight bar (51) extending in the second direction (Y) and first and second weight rails (52, 53). However, the height (l5) of the weight bar (51) is greater than the height (l5, see Fig. 9) of the weight bar (51) of Figs. 3 to 10 so that the weight added by the weight portion (50) increases. However, the height (l6) of the first and second weight rails (52, 53) is maintained similarly to the height (l6, see Fig. 9) of the first and second weight rails (52, 53) of Figs. 3 to 10.

In one embodiment of the present invention, as the club number increases, the weight increases centered on the weight bar (51). That is, when the club number increases, the weight increase of the weight bar (51) is configured to be greater than the weight increase of the weight rails (52, 53). Accordingly, as the number increases, the center of gravity (CG) is positioned relatively further forward, making it easy to lift the ball, and as the number decreases, the proportion of the increase in the moment of inertia (MOI) is relatively greater, so that tolerance can be configured to increase.

Although the present invention has been described focusing on one embodiment, the present invention is not limited thereto and can be implemented in various modified forms.

10: Head 20: Body
21: Sol 22: Crown
23: Stone 24: Home
25: Hollow inside 30; Face
31: Face 40: Additional weight
41: Weight 42: Screw
50: Weight section 51: Weight bar
52: 1st weight rail 53: 2nd weight rail
60: Neck

Claims (15)

The body including the crown, sole and hollow interior;
A weight part connected to the inner surface of the sole of the above body and
Includes a face portion connected to the above body,
The weight portion includes a first weight portion including a weight bar arranged adjacent to the face portion and a plurality of weight rails extending in a first direction (X) in the forward-backward direction from the weight bar in a direction opposite to the face portion, and a second weight portion connected to the rear of the sole,
The above weight rail includes a first weight rail and a second weight rail,
The first weight rail is arranged on the toe side side relative to the center of the body in the second direction (Y) connecting the heel side and the toe side, and the second weight rail is arranged on the heel side side relative to the center of the body, so that the first and second weight rails are spaced apart in the second direction.
The above body includes a groove extending in a first direction toward the face portion on both sides of the second weight portion based on the inside of the hollow portion,
The first and second weight rails are formed at least partially in the groove portion.
Golf club head. In paragraph 1,
A golf club head having a welding seam disposed between the weight bar and the face portion to connect the face portion to the body, wherein the weight bar is disposed apart from the face portion. delete In the second paragraph,
A golf club head, wherein a separation distance between the first weight rail and the second weight rail in the second direction is between 10 and 50% of the length of the head in the second direction. In paragraph 4,
A golf club head wherein the weight bar and the first and second weight rails become wider as they get closer to the sole. In paragraph 5,
A golf club head including a weight body, wherein the second weight body is positioned centrally in the first direction and is replaceable by a screw. In paragraph 5,
A golf club head wherein the weight bar includes a front slope and a rear slope, and a first angle formed by the front slope with respect to the vertical direction is smaller than a second angle formed by the rear slope with respect to the vertical direction, so that the front slope is formed at a steeper angle than the rear slope. In paragraph 6,
The above first and second weight rails extend to the second weight section,
A golf club head wherein the maximum width of the first and second weight rails is smaller than the maximum width of the weight bar. In Article 8,
A golf club head wherein said first and second weight rails extend to a position spaced from the rear of said sole. delete In paragraph 7,
A golf club head in which the weight bar becomes longer in the first direction from the heel side to the toe side. In paragraph 7,
A golf club head wherein the weight of the first weight portion is between 40 and 80 g or between 18 and 32% of the total weight of the head. In the first paragraph,
It includes a pair of protrusions extending rearwardly from the first end of the weight bar and protruding into the interior of the sole.
A golf club head wherein the home portion is formed between the protrusion portion and the second weight portion. A set of golf clubs including multiple heads with different loft angles.
The above head has a golf club head shape according to any one of claims 1, 2, 4 to 9, 11 and 12,
A golf club set wherein the weight of the first weight portion in the above head increases as the loft angle increases. In Article 14,
A golf club set in which the thickness of the weight bar increases as the loft angle increases in the head.

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