KR20030032778A - The head face for golf club - Google Patents

Abstract

PURPOSE: A head face for golf club is provided to increase resilient power and preserve a direction of the portion of a ball corresponding to be hit. CONSTITUTION: The head face for gold club comprises a first protrusion(11) protruded toward inside of the face body and having a certain depth and width; a recess(12) depressed toward inside of the first protrusion and having a certain depth and width; a second protrusion(13) protruded toward inside of the recess and having a certain depth and width and; a third protrusion(14) protruded toward inside of the second protrusions and having a certain depth and width.

Description

Head face for golf club {The head face for golf club}

The present invention relates to a head face for a golf club, and more specifically, to a golf club provided with the head face of the present invention having an elliptical directional preservation means on a rear striking surface opposite to a front striking surface of a golf club head face. When the golf ball hits the golf ball, even if the golf ball does not exactly fit the front hitting surface, a new type of golf club headface that increases the resilience of the golf ball and increases the distance of the golf ball while preserving the direction of the golf ball. will be.

In general, a golf club is composed of a shaft portion, a head portion and a grip portion. In such golf clubs, a portion of the head of the golf club that defines the hitting surface of the golf ball is called a head face for the golf club, and the head face for the golf club is the crown of the club head. Or the upper part and the sole (or lower part) of the club head are integrally fused to the head body by argon welding or the like, and the part hitting the golf ball in the head face is called a front striking part. And the opposite part opposite is called a rear striking surface.

In the hollow metal wood-type club head and the cavity-reinforced iron-type club head, the head face for the golf club has a relatively thin plate structure which is cast. This golf club headface is usually defined by two surfaces, the front striking surface and the rear striking surface opposite thereto.

A large impact force is generated when the head face for the golf club strikes the golf ball, and this large impact force is fully applied to the head face for the golf club. For the relatively thin headfaces of hollow metal wood-type club heads and cavity-reinforced iron-type club heads, these action forces tend to produce large internal bending stresses. These internal bending stresses often cause severe cracks in materials that render the club head unusable.

In designing a head for a golf club, the golf club headface portion must be structurally sufficient to withstand repeated forces such as those associated with golf ball strike. This sufficient structural stability can be achieved by increasing the stiffness of the face portion such that the bending stress level is below the limit stress level of the material used for the headface.

Typically for metal club heads, the headface portion is reinforced by uniformly increasing the thickness or by adding one or more ribs (ie, individually attached posts or metal lines) to the rear surface of the headface. .

Increasing the thickness of the headface portion uniformly usually requires adding a large amount of material to sufficiently reduce the stress to be sufficient to prevent impact or fatigue cracking.

However, adding such a large amount of material to the club headface adversely affects the performance of a golf club using this headface. Golf club performance is badly impacted by very heavy club heads that are very close to the headface and have a center of gravity that affects optimal performance.

In addition, the club's sense and sound using this headface are adversely affected by the number of vibrations transmitted through the club and the acoustic response of the club.

By adding ribs to the rear face of the headface to reinforce the headface, it is possible to easily reinforce without adding a significant amount of weight to the headface, but it produces irregular wire distribution on the striking surface of the headface. It may also have adverse consequences.

Exemplary ribs used in head designs for conventional metal golf clubs are, for example, vertical ribs, horizontal ribs, curved ribs, angled ribs, etc., but these ribs locally increase the stiffness of the headface and minimize the headface weight increase. To have a narrow width, any predetermined length and sufficient depth or thickness.

In addition, such ribs are such that sharp corners are formed between the ribs and the headface rear surface to which the ribs are attached, such corners are always crackable at frequent strikes.

Moreover, by using ribs positioned to extend vertically along the headface rear surface, the above-mentioned large bending stresses are moved to the intersections of the face soles and face crowns, increasing cracks at these positions.

An additional problem that arises from using ribs on the headface back surface is the manufacture of such headfaces. Usually the head face is molded using a casting process. Casting headfaces with rib structures is more difficult due to non-uniform material shrinkage that occurs during the cooling of the casting, which is particularly difficult in inclusion, internal cavities, or casting materials. There is a tendency to generate surface cracks along the area.

In addition, uneven cooling will result in headface depressions and surface dimples in the striking surface opposite the area in which the ribs are located. Therefore, there is a need for a new club headface structure with improved structural stability without adversely affecting the performance, appearance, feel and sound of the club.

In addition, in the beginner and intermediate level, including beginners to golf, hitting the golf ball in the correct position because the address is always a problem when hitting the golf ball with the headface for the golf club, such as drive, wood or iron Is almost impossible.

Therefore, the golf ball hit by a slight mistake will be sliced or hooked, so there is a limit to reducing the number of strokes to improve the ability to give up golf easily.

Even in the intermediate level, when the golf ball is hit by a golf club, the ball hits the front hitting surface slightly, and thus the repulsive force of the ball cannot be maintained to be the same. This means that even if the position where the ball hits the front hitting surface is slightly misaligned, the direction of the ball cannot be maintained completely.

In addition, the rear hitting surface of the golf club head face is not provided with a separate means for preserving the repulsive force of the ball (conventionally there is only a reinforcing rib) will occur.

The present invention has been developed in order to solve the above problems, the golf club headface of the present invention is preferably a flat front hitting surface, and the directional integrity and resilience of the golf ball when hitting the golf ball A golf club head face having a rear striking surface having an elliptical directional retaining means to increase.

And the golf club head face of the present invention to protect the direction of the golf ball when hitting the golf ball on the rear hitting surface, so that the address is unstable, even if the position of the ball is slightly misaligned on the front hitting surface of the golf club hitting the rear It is to provide a golf club head face for excellent ball directional preservation while maintaining a constant repulsive force against the ball of the front hitting surface by the directional preservation means of the surface.

The advantage of the golf club headface of the present invention is that in the case of a club headface of a predetermined size, the weight is reduced while its rigidity and structural stability is increased, the directional preservation of the golf ball on the front hitting surface is excellent, and when hitting The resilience of the golf ball is excellent to not only increase the distance of the golf ball, but also to provide a low impact force as a whole, and to provide a head face for a golf club more resistant to breakage after the initial and long time.

1 is a perspective view of a head face for a golf club showing a preferred embodiment of the present invention

Figure 2 is a front view of the head face for a golf club of the present invention

3 is a cross-sectional view taken along the line X-X of FIG.

Figure 4 is an installation state showing a state in which the golf club headface of the present invention of Figures 1 to 3 applied to the golf club

5 is a cross-sectional view taken along the line Y-Y of FIG.

＊ Description of symbols for main parts of the drawings ＊

1: golf club headface 2: front hitting surface

3: rear hitting surface 4: directional preservation means

5: multiple grooves 6: head body

10: face body 11: the first protrusion

12: grooves 13: the second protrusion

14 third projection 100 head portion

200: shaft portion 300: grip portion

400: Golf Club

Golf club head face of the present invention for achieving the above object, a front hitting surface having a plurality of grooves to hit a golf ball in the head face for a golf club, and a rear hitting surface facing the front hitting surface Having;

When the golf ball is hit on the rear strike surface is characterized in that it comprises a directional preservation means for increasing the directional integrity and resilience of the golf ball.

In another aspect of the present invention, the directional preservation means is a recessed body having a face body, a first protrusion projecting to have a predetermined thickness and width inside the face body, and a predetermined thickness and width inside the first protrusion. And a third projection which protrudes to have a predetermined thickness and width into the concave groove, a second projection which protrudes to have a predetermined thickness and width inside the groove.

Another feature of the present invention, the first protrusion, the groove, the second protrusion and the third protrusion formed on the face body of the directional preservation means are all formed in an oval shape so as to act as a leaf spring on the rear striking surface. It is characterized by that.

Another feature of the invention, the thickness of the face body and the groove portion is formed in the range of 2.0 ~ 2.5 mm, the thickness of the first projection and the third projection is formed in the range of 2.5 ~ 3.0 mm, The thickness of the second projection is characterized in that it is formed within the range of 2.1 ~ 2.9 mm so as not to exceed the thickness of the first projection and the third projection.

Hereinafter, with reference to the accompanying drawings will be described in detail the head face for a golf club of the present invention.

1 to 5, the headface 1 for a golf club of the present invention is opposed to and against a very smooth forward striking surface 2 having a plurality of grooves 5 so as to include a score-line. It is provided with a rear striking surface 3 having an elliptical directional preservation means 4 to increase the directional preservation and repulsive force of the golf ball when striking.

The front hitting surface 2 is provided with a plurality of grooves 5 at regular intervals in the transverse or longitudinal direction.

The rear striking surface 3 is composed of an elliptical directional preservation means 4, the directional preservation means 4 having a relatively flat face body 10 and a predetermined thickness and width inside the face body. The protruding first protrusion 11, the recess 12 recessed to have a predetermined thickness and width inside the first protrusion, and the second protrusion 13 protruding to the inside of the recess with a predetermined thickness and width. ) And a third protrusion 14 which protrudes to have a predetermined thickness and width inside the second protrusion.

The thickness of the face body 10 and the thickness of the recess 12 have the same thickness, and the first protrusion 11 and the third protrusion 14 also have the same thickness.

The second protrusion 13 protrudes to have a predetermined thickness and a width inwardly of the recess 12, but the thickness of the second protrusion 13 is the first protrusion 11 and the third protrusion ( It is preferable to form not to exceed the thickness of 14).

Therefore, the directional preservation means 4 forms a first projection 11 having a relatively wide width and thickness on the face body 10 having a predetermined thickness and width, and then the inner side of the face body 10. A recess 12 equal to the thickness is formed.

Then, the second protrusion 13 and the third protrusion 14 having a predetermined thickness and width are sequentially formed, so that a plurality of leaf springs are superimposed on the rear striking surface 3 of the head face 1. It will have directional preservation and resilience to golf balls.

The thickness of the face body 10 and the recess 12 is preferably formed in the range of 2.0 to 2.5 mm, but is not limited thereto.

In addition, the thickness of the first protrusion 11 and the third protrusion 14 is preferably formed in the range of 2.5 to 3.0 mm, but is not limited thereto.

In addition, the thickness of the second protrusion 13 may be preferably formed within a range of 2.1 to 2.9 mm so as not to exceed the thickness of the first protrusion 11 and the third protrusion 14. It is not.

One of the features of the directional preservation means 4 of the present invention is that the first protrusion 11 is formed from the outside of the face body 10 on the rear striking surface 3 of the head face 1, and then into the inside thereof. After forming the recess 12 having a thickness equal to the thickness of the face body 10, the second protrusion 13 and the third protrusion 14 having a predetermined thickness and width inside the recess 12. Was formed by cascading sequentially.

The thickness of the third protrusion 14 is equal to the thickness of the first protrusion 11.

Therefore, the directional preservation means 4 formed on the rear striking surface 3 of the head face 1 for the golf club of the present invention is generally oval, and the first protrusion 11, the recess 12, Since the second protrusions 13 and the third protrusions 14 are elliptical, respectively, the second protrusions 13 and the third protrusions 14 form a stepped portion with respect to the recess 12. Each will act as an independent oval leaf spring, and will have resilience and resonance like hitting a bell when hitting a golf ball.

Therefore, when hitting the golf ball with the front hitting surface 2 of the head face 1 for the golf club of the present invention, even if the golf ball does not exactly fit the front hitting surface, the directional integrity of the golf ball is excellent, as well as the shot of the golf ball By increasing the power of the golf ball can be drastically increased the distance.

The first protrusion of the directional preservation means 4 formed on the rear striking surface 3 even if the golf ball is not hit exactly by the user's address and swing, even when the golf ball is not hit exactly at the center of the front striking surface 2 of the present invention. 11, the recess 12, the second protrusion 13 and the third protrusion 14, each acts as a separate leaf spring, so as to increase the distance of the golf ball while preserving the direction of the corresponding site where the golf ball fits Will be.

The head club 1 for the golf club of the present invention is forged by a method such as die casting, and then the directional preservation means 4 of the rear hitting surface 3 has an elliptical shape so as to have a predetermined thickness and width as a whole through a milling machine. It is made by milling.

Golf club head face 1 of the present invention having a directional retaining means (4) on the rear striking surface (3) as described above is made of a titanium alloy, the head body made of titanium alloy (6) ) And fused by argon welding, etc. to be integrated with each other, and the welded parts are ground smoothly and finished.

Then, the head face 1 is fused to the head body 6 by an argon welding method or the like to form the head part 100 as shown in FIG. 5, and the head part 100 is As shown in FIG. 4, the completed golf club 400 is manufactured by assembling the shaft portion 200 and the grip portion 300.

The golf club head face 1 according to the present invention has a significantly smaller head face weight compared to a conventional golf club head face having a similar strength with a uniform thickness, and thus achieves a desired swing weight, thereby achieving good movement performance. Not only does it produce more pronounced acoustic properties, it also has a more uniform face intensity distribution than the headface for golf clubs that use ribs on conventional rear striking surfaces.

Further, the head face 1 for a golf club according to the present invention is more structurally efficient than before, and has a more uniform head face stiffness and elasticity over a wider area of the head face, and a wider head face 1. It will act as a center of hitting at the site.

As described above with reference to the illustrated golf club headface according to the present invention, by the embodiments and drawings disclosed herein the present invention is not limited to this, those skilled in the art within the scope of the present invention Of course, various modifications can be made.

The golf club head face of the present invention as described above preferably has a flat front striking surface 2 having a plurality of grooves 5, and opposes and increases directional preservation and resilience of the golf ball upon striking. Configured to have a rear striking surface 3 with an elliptical directional preservation means 4,

When the golf ball is hit by the front hitting surface (2), the directional preservation means (4) of the rear hitting surface (3) preserves the directionality of the golf ball, so that the address is unstable, so that the ball hits the front hitting surface (2) of the golf club. Even if the fit position is slightly misaligned, the directional preservation means 4 of the rear hitting surface 3 maintains the directionality of the golf ball, and the repulsive force against the golf ball is excellent, thereby increasing the flying distance.

The golf club head face 1 of the present invention has a significant increase in stiffness and structural stability while reducing weight in the case of a head face of a predetermined size, and directional integrity of the ball of the rear hitting surface against the front hitting surface is improved. It is excellent, and the repulsion of the golf ball is excellent when it hits to increase the distance of the ball, it also generates a low impact force when hitting, better withstands the initial and long time after fracture, and has good motility and clear sound characteristics. This has the advantage of having a more uniform face strength distribution than a headface for golf clubs that generates and uses ribs on a conventional rear striking surface.

In addition, the golf club head face 1 according to the present invention is the first projection 11, the recess 12, the second projection 13 and the directional retaining means 4 formed on the rear striking surface (3) and Each of the third protrusions 14 acts as an independent leaf spring, thereby increasing the directional preservation and resilience of the target where the golf ball fits, and having a more uniform head face stiffness and elasticity over a wide area of the head face. And, when hitting the golf ball to the front hitting surface acts as a center of hitting in a wider area of the front hitting surface has the effect of excellent directional integrity and resilience of the ball.

Claims (7)

In the head face for the golf club, A front striking surface (2) having a plurality of grooves (5) to strike a golf ball, and a rear striking surface (3) opposite the front striking surface; The rear striking surface (3) is a golf club head face, characterized in that it comprises a directional preservation means (4) to increase the directional integrity and resilience of the golf ball when the golf ball is hit. The method of claim 1, The directional preservation means 4, A face body 10; A first protrusion 11 protruding into the face body to have a predetermined thickness and width; A recess 12 recessed to have a predetermined thickness and width inside the first protrusion; A second protrusion 13 protruding inwardly of the recess to have a predetermined thickness and width; And The golf club head face, characterized in that consisting of a third projection 14 protruding to have a predetermined thickness and width inside the second projection. The method of claim 2, The first protrusions 11, the recesses 12, the second protrusions 13 and the third protrusions 14 formed on the face body 10 of the directional preservation means 4 are all oval shaped to strike the back. A golf club head face, characterized in that configured to act as a leaf spring on the surface (3). The method of claim 2, The thickness of the face body 10 and the thickness of the recess 12 are formed to be the same thickness, and the first protrusion 11 and the third protrusion 14 are also configured to have the same thickness. Headface for golf club to make. The method of claim 2, The second protrusion 13 protrudes to have a predetermined thickness and a width inwardly of the recess 12, and the thickness of the second protrusion 13 is the first protrusion 11 and the third protrusion 14. Golf club head face, characterized in that not to exceed the thickness of). The method of claim 2, The thickness of the face body 10 and the groove portion 12 is formed in the range of 2.0 ~ 2.5 mm; The thicknesses of the first protrusions 11 and the third protrusions 14 are in the range of 2.5 to 3.0 mm; The thickness of the second protrusion 13 is a golf club head face, characterized in that formed in the range of 2.1 ~ 2.9 mm so as not to exceed the thickness of the first protrusion (11) and the third protrusion (14). The method of claim 2, The directional preservation means 4, Forming a first projection (11) from the outside of the face body (10) on the rear striking surface (3) of the head face (1); Forming a recess 12 having the same thickness as that of the face body 10 therein; The golf club head face, characterized in that to form a second projection 13 and the third projection 14 of the predetermined thickness and width inwardly of the groove portion 10 in sequence.