Head assembly of golf club

Abstract

The head assembly of a golf club includes a sound generator or a vibration generator. The sound generator includes a sound hole formed in a head of a driver, a sound pipe attached to the head, and a sound generator attached to an iron. Using the head assembly, since the golfer slowly swings the golf club, improper rapid swing is prevented and head-up is also minimized.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a head assembly of golf clubs, and more particularly, to an improvement of a head of various golf clubs such as drivers, irons, and putters, and fairway woods to enable a golfer to improve their swing and to efficiently use the golf clubs.

2. Description of the Related Art

Golf is often referred to as a “mind game”, and a golfer's state of mind is of primary importance in the game of golf. Since the golfer's personality influences their golf game, it is difficult to gain skill in golf. In particular, when novices swing a golf club they may become accustomed to an undesirable golf pose. As such most novices have difficulty in improving their swing.

Generally, there are various important factors in playing golf, which golfers have difficulty in easily learning, as follows. First, a golf club must be slowly backswung so as to precisely drive a golf ball along a predetermined lie without disturbing swing when backswinging with the golf club. Second, cocking, i.e. striking the golf ball or swinging with a golf club only using the golfer's wrists must be minimized. The golfer's left shoulder must be slowly turned for slow swing while preventing the golfer's body from recoiling when starting the backswing (a motion of moving a golf club for a shot). Third, the downswing must be performed after pausing the head of the golf club at the peak of the backswing stroke. The lower part of the golfer's body must be prevented from vibrating when performing the backswing.

Although novices consciously try to learn proper swing technique according to the various factors, since most novices is psychologically hasty and cannot visually concentrate the golfer's eyes upon a golf ball, goals, which the novices want to achieve, are not achieved. Moreover, since the novices cannot strike the golf ball as their wishes when the novices concentrate their efforts to improve their swings, the novice cannot swing according to the various factors.

SUMMARY OF THE INVENTION

Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a head assembly of golf clubs, such as putters, irons, drivers (including fairway woods), enabling a golfer to improve golf swing mentally influence, to aim a head of the golf club when swinging the golf club, to improve their grip of the golf club, to improve their swing, and to improve their drive.

In accordance with the present invention, the above and other objects can be accomplished by the provision of a head assembly of a golf club including a sound generating device including one or a combination of at least two of the group of at least a single sound pipe for communicating a cavity formed in a body of a head of a driver with exterior, a sound slit formed in the sound pipe, and a sound hole formed in the head.

Preferably, the cavity of the body of the head of the driver is divided by at least one partition.

In accordance with the present invention, the above and other objects can be accomplished by the provision of a head assembly of a golf club including a sound generating device including at least one metal resonant wall for dividing a cavity formed in a body of a head of a driver, and regularly or irregularly arranged to divide a part or whole of the cavity.

In accordance with the present invention, the above and other objects can be accomplished by the provision of a head assembly of a golf club including a sound generating device, the sound generating device including a connection shaft installed to a center of gravity toward the wall of the cavity in a cavity of a body of a head of a driver, and a vibration pipe or a vibration ball installed to an end of the connection shaft.

In accordance with the present invention, the above and other objects can be accomplished by the provision of a head assembly of a golf club including a sound generating device, the sound generating device including a hollow sound device installed to a rear side of a face of a head of an iron and having various shapes such as a golf ball shape, at least one sound hole formed in the hollow sound device and having various shapes, and a sound slit.

In accordance with the present invention, the above and other objects can be accomplished by the provision of a head assembly of a golf club including a sound generating device including an sighting plate extending from the upper surface of a head of a putter to the rear side thereof, and a sound generating device detachable to the lower side of the sighting plate and including a sound unit for accommodating a sound disc or a sound ball guided by a slope and colliding against the wall of the head to generate sound and vibration when the head is positioned at the peak of the backswing stroke.

In accordance with the present invention, the above and other objects can be accomplished by the provision of a head assembly of a golf club including a sound generating device including a plurality of metal sound fins extending from the rear side of a head of a putter and installed at regular intervals to generate sound due to vibration.

In accordance with the present invention, the above and other objects can be accomplished by the provision of a head assembly of a golf club including a sound generating device, the sound and vibration generating device including a hollow sensing pipe fixed to a bottom surface of a head in a cavity of a body of the head of a driver, closed by a cap, and having a closed end, and at least one sensing ball inserted into the hollow sensing pipe and colliding against the closed end to generate sound or vibration when the head is positioned at peak of the swing stroke.

Since the head assembly of a golf club in accordance with the present invention includes a sound generating device or a vibration generating device installed to a head, the golfer can utilize their senses to improve their golf game. Thus, the golfer can accustom himself/herself to smoothly and slowly swinging the golf club. Moreover, the golfer can prevent improper swing, i.e. the backswing during the putter swing.

BRIEF DESCRIPTION OF THE DRAWINGS

These and/or other objects and advantages of the present invention will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1a is a perspective view illustrating a head assembly of a golf club according to a first preferred embodiment of the present invention applied to a driver;

FIG. 1b is a sectional view taken along the line A-A in FIG. 1a;

FIG. 1c is a sectional view illustrating a first modification of the head assembly according to the first preferred embodiment of the present invention taken along the line A-A in FIG. 1a;

FIG. 1d is a sectional view illustrating a second modification of the head assembly according to the first preferred embodiment of the present invention taken along the line A-A in FIG. 1a;

FIG. 1e is a sectional perspective view illustrating a third modification of the head assembly according to the first preferred embodiment of the present invention;

FIG. 1f is a sectional perspective view illustrating a fourth modification of the head assembly according to the first preferred embodiment of the present invention;

FIG. 1g is a sectional perspective view illustrating a fifth modification of the head assembly according to the first preferred embodiment of the present invention;

FIG. 1h is a sectional perspective view illustrating a sixth modification of the head assembly according to the first preferred embodiment of the present invention;

FIG. 1i is a sectional perspective view illustrating a seventh modification of the head assembly according to the first preferred embodiment of the present invention;

FIG. 2a is a partially sectional perspective view illustrating a head assembly of a golf club according to a second preferred embodiment of the present invention applied to a driver;

FIG. 2b is a partially sectional perspective view illustrating a first modification of the head assembly of a golf club according to the second preferred embodiment of the present invention;

FIG. 2c is a partially sectional perspective view illustrating a second modification of the head assembly of a golf club according to the second preferred embodiment of the present invention;

FIG. 2d is a partially sectional perspective view illustrating a third modification of the head assembly of a golf club according to the second preferred embodiment of the present invention;

FIG. 2e is a partially sectional perspective view illustrating a fourth modification of the head assembly of a golf club according to the second preferred embodiment of the present invention;

FIG. 2f is a partially sectional perspective view illustrating a fifth modification of the head assembly of a golf club according to the second preferred embodiment of the present invention;

FIG. 3a is a perspective view illustrating the lower side of a head assembly of a golf club according to a third preferred embodiment of the present invention applied to a driver;

FIG. 3b is a sectional view taken along the line B-B in FIG. 3a;

FIG. 3c is a sectional view illustrating a first modification of the head assembly according to the third preferred embodiment of the present invention taken along line B-B in FIG. 3a;

FIG. 4a is a perspective view illustrating a head assembly of a golf club according to a fourth preferred embodiment of the present invention applied to a putter;

FIG. 4b is a perspective view illustrating a first modification of the head assembly according to the fourth preferred embodiment of the present invention applied to an iron;

FIG. 4c is a perspective view illustrating a second modification of the head assembly according to the fourth preferred embodiment of the present invention applied to an iron;

FIG. 5a is a rear-side perspective view illustrating a head assembly of a golf club according to a fifth preferred embodiment of the present invention applied to a putter;

FIG. 5b is an exploded perspective view illustrating the head assembly of a golf club according to the fifth preferred embodiment of the present invention in FIG. 5a;

FIG. 5c is a sectional view taken along line C-C in FIG. 5c;

FIG. 5d is a sectional view illustrating a first modification of the head assembly according to the fifth preferred embodiment of the present invention;

FIG. 6a is a perspective view illustrating a head assembly of a golf club according to a sixth preferred embodiment of the present invention applied to a putter;

FIG. 6b is a sectional view taken along line D-D in FIG. 6a;

FIG. 7a is a perspective view illustrating a head of a head assembly of a golf club according to a seventh preferred embodiment of the present invention, applied to a driver, with a cover removed;

FIG. 7b is a lower-side exploded perspective view illustrating the head assembly of a golf club according to the seventh preferred embodiment of the present invention in FIG. 7a;

FIG. 7c is a view illustrating a modification of the head assembly of a golf club according to the seventh preferred embodiment of the present invention;

FIG. 7d is a sectional view illustrating a head before striking a golf ball with the head assembly of a golf club according to the seventh preferred embodiment of the present invention; and

FIG. 7e is a sectional view illustrating a head after striking a golf ball with the head assembly of a golf club according to the seventh preferred embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The structure and aspects of a head assembly of a golf club according to the present invention are applicable to all golf clubs. Hereinafter, the structure and operation of the head assembly of a golf club according to the preferred embodiments of the present invention and its modifications, applied to drivers (including irons) and putters, will be described in detail in conjunction with the accompanying drawings. Although the head assembly of the preferred embodiments of the present invention and the modifications are applied to different kinds of golf clubs, the same reference numerals are assigned to identical elements of a head.

Embodiment 1

FIG. 1a shows a head assembly of a golf club according to a first preferred embodiment of the present invention applied to a head H of a driver D1. The head assembly, according to the first preferred embodiment of the present invention, is applied to the driver D1 having a cavity CV formed in the driver D1. The head assembly according to this embodiment includes plural sound pipes 1, 2, and 3, which are extended from the back of a face F of the head H to the cavity CV of a body BD of the driver D1 and are fixed to the body BD.

Moreover, as shown in FIG. 1b illustrating a first modification of the head assembly of a golf club according to the first preferred embodiment of the present invention, the sound pipes 1, 2, and 3 are integrally fixed to a wall H′ for forming the driver D1. The first modification of the head assembly further includes a partition P installed to the intermediate portion of the cavity CV and to divide the cavity CV into two spaces so as to separate the space where the sound pipes 1, 2, and 3 are installed from the remainder of the cavity CV, thereby effectively generating sound.

FIG. 1c shows various modifications of the sound pipes, employed in the first modification of the head assembly according to the first preferred embodiment of the present invention, in a single driver for the illustrative purpose.

As shown in the drawing, a sound pipe 11 integrally formed with a wall H′ for forming the head H of a driver D2 and having threads 11′ formed in the inner wall thereof, a sound pipe 12 fixed to the wall H′ of the head H of the driver D2 by a screw or by welding after press-fitting, a sound pipe 13 having a closed end 13′ and an inner wall without threads and fixed to the wall H′ for forming the head H of the driver D2, and a sound pipe 14 having a sound generating slit 14′ for easily generating sound are installed to a single driver for illustrative purposes. However, when the sound pipes 11, 12, 13, and 14 are practically installed to the head H, one or more of the sound pipes 11, 12, 13, and 14 may be installed to the driver D2. The thread and the sound generating slit cause an air vortex which easily generates sound.

FIG. 1d shows a second modification of the head assembly according to the first preferred embodiment of the present invention. As shown in the drawing, the second modification of the head assembly according to the first preferred embodiment of the present invention includes a plurality of sound pipes 21, 22, and 13 alternately installed to the wall H′ of the body BD for forming a head H of a driver D3.

As shown in FIG. 1e, a third modification of the head assembly according to the first preferred embodiment of the present invention includes a plurality of longitudinal sound slits 21, 32, 33, and 34 formed in a wall H′ of a body BD of a driver D4 in the longitudinal direction. A fourth modification of the head assembly according to the first preferred embodiment of the present invention, as shown in FIG. 1f, includes a plurality of sound holes 41, 42, 43, and 44 formed in a wall H′ of a body BD of a driver D5. A fifth modification of the head assembly according to the first preferred embodiment of the present invention, as shown in FIG. 1g, includes a plurality of star-shaped sound holes 51, 52, 53, and 54 formed in a body BD of a driver D6.

If necessary, the head assembly of a golf club according to the first preferred embodiment of the present invention may include rubber or synthetic resin cap (not shown) for closing the sound slits and the sound holes so that a head employing the head assembly of a golf club according to the first preferred embodiment of the present invention may be used as a general head of a golf club.

In addition, a sixth modification of the head assembly according to the first preferred embodiment of the present invention, as shown in FIG. 1h, includes a single long sound slit 55 formed in a body BD of a driver D7 having a partition P. A seventh modification of the head assembly according to the first preferred embodiment of the present invention, as shown in FIG. 1i, includes a long sound slit 56 formed in a streamlined concave side face F.

As described above, the head assembly of a golf club according to the first preferred embodiment of the present invention can be applied to drivers having various configurations and structures, and its concept is to generate sound using friction between air and the sound slits or the sound holes generated when the head of the golf club is swung over a predetermined speed.

In other words, according to the head assembly of a golf club according to the first preferred embodiment of the present invention, air generates sound due to rapid angular speed of the head assembly during the backswing when passing through the sound slits or the sound holes. Therefore, a golfer repeats motion of slowly swinging the golf club to prevent sound from being generated during the backswing so that the golfer accustoms himself/herself to a slow backswing.

Embodiment 2

FIGS. 2a is a perspective view illustrating a head assembly of a golf club according to a second preferred embodiment of the present invention applied to a driver. The second preferred embodiment is described together with various modifications.

A head H of a driver D9 includes a cavity CV formed in the head H, and a resonant wall W installed in the cavity CV of a body BD connected to a face F of the head to generate sound. The resonant wall W is a metal wall with a sufficient thin thickness for dividing the cavity CV into two hollow spaces G1 and G2. The resonant wall W is made of the same material as that of the head H of the driver D9 and is integrally formed with the head H or is separately made of a resonant metal plate and fixed in the cavity CV.

As shown FIG. 2b, a driver D10 of a first modification of the head assembly of a golf club according to the second preferred embodiment of the present invention includes a plurality of resonant walls W1 and W2. As shown in FIG. 2c, a driver D11 of a second modification of the head assembly of a golf club according to the second preferred embodiment of the present invention includes a single partial resonant wall WP1 or at least two partial resonant walls WP1 and WP2, installed to a wall of the cavity CV.

As shown in FIG. 2d, a driver D12 of a third modification of the head assembly of a golf club according to the second preferred embodiment of the present invention includes partial resonant walls WP3, WP4, and WP5, alternately arranged in the cavity CV.

In the fourth and fifth modifications of the head assembly of a golf club according to the second preferred embodiment of the present invention shown in FIGS. 2e and 2f, a driver D13 includes partial resonant walls WP6 and WP7 installed to the rear wall of the cavity CV, i.e. the inner wall opposite to the face F, a driver D14 includes partial resonant walls WP8 and WP9 crossing each other within the cavity CV.

The resonant walls W, W1, and W2 . . . , and the partial resonant walls WP, WP1, and WP2 . . . are made of metal plates. Preferably, when the head H of the driver is vibrated by external impact, the resonant walls W, W1, and W2 . . . and the partial resonant walls WP, WP1, and WP2 . . . are made of materials and have thicknesses to generate sounds due to the vibration of the head H of the driver.

Embodiment 3

Generally, drivers D are manufactured via mechanical processes such as molding, forging, or the like. As shown in FIG. 3s, a head H of a driver D15, employing a head assembly of a golf club according to a third preferred embodiment of the present invention, includes a face F and a body BD connected to the face F to form a cavity CV therein. The body BD is integrally formed with the face F or is fixed to the face F.

The head assembly of a golf club according to the third preferred embodiment of the present invention further includes a vibration generating device R installed in the cavity CV. The vibration generating device R, as shown in FIG. 3b, includes an elastic connection rod 60 such as a coil spring installed to a center of gravity G of the rear face of the face F in the cavity CV formed in the body BD, and a metal ball, such as a steel ball, fixed to a free end of the elastic connection rod 60.

The vibration generating device R of a modification of the head assembly of a golf club according to the third preferred embodiment of the present invention applied to a driver D16, as shown in FIG. 3c, includes a connection shaft 62 such as a steel plate, an elastic metal plate, or a fixing pipe instead of the elastic connection rod 60, and a vibration pipe 63 fixed to a free end of the connection shaft 62, and its operation is identical to that of the vibration generating device R shown in FIG. 3b.

In these structures, optimal weight of the metal ball 61 and the vibration pipe 63 can be obtained by repeating experiments like the operation and effect of the present invention described later. Moreover, since the optimal weight varies according to the kind of golf club and the manufacturer, detailed data will not be provided in the description.

More preferably, as shown in FIGS. 3b and 3c, the face F has an outer portion with a thickness T greater than the thickness t of a central portion of the face F so that elasticity of the face F is increased to easily generate vibration.

According to the second and third preferred embodiments of the present invention, when striking a golf ball (not shown) with the driver, specific sound or vibration is generated by the resonant walls W, W1, and W2 . . . , the partial resonant walls WP, WP1, and WP2 . . . of the second preferred embodiment of the present invention, or the ball 61 and the vibration pipe 63 of the third preferred embodiment of the present invention in accordance with swing conditions.

In other words, when proper swing is performed, normal sound is generated or vibration transmitted to the golfer's hands is generated. On the other hand, when the club is improperly swung, sound or vibration corresponding to the improper swing is generated. Thus, when the golfer trains using the golf clubs employing the head assembly according to the preferred embodiments, the golfer understands the sound generated when the optimal swing performed. Thus the golfer trains the golf swing to prevent the sound generated when improper swing is performed from being generated, thereby improving the golfer's improper swing.

Embodiment 4

As shown in FIG. 4s, a head assembly of a golf club according to a fourth preferred embodiment of the present invention applied to an iron I1 includes a variously shaped hollow sound device 70 installed to a rear surface of a face F.

The sound device of a first modification of the head assembly of a golf club according the fourth preferred embodiment of the present invention applied to the iron I1, as shown in FIG. 4b, is made of various materials and has a golf ball shape or a hollow semispherical shape. A sound device 80 of a second modification of the head assembly of a golf club according to the fourth preferred embodiment of the present invention, as shown in FIG. 4c, has quarter spherical shape and may be made of various materials.

These sound devices 70, as shown in FIG. 4a, have star-shaped sound holes 71, 72, and 73, or sound slits 74, 75, and 75 as shown in FIG. 4b illustrating the first modification of the head assembly, and the sound device 80, as shown in FIG. 4c illustrating the second modification of the head assembly, has circular sound hole 81, 82, and 83, so that a sound generating device can be structured.

Operation and effects of the head assembly of a golf club according to the fourth preferred embodiment of the present invention are identical to those of the head assembly of a golf club according to the first preferred embodiment of the present invention.

Embodiment 5

FIG. 5a shows a head assembly of a golf club according to a fifth preferred embodiment of the present invention applied to a putter P1. As shown in the drawing, preferably, a sound device of the putter P1 includes an sighting plate GP extending from an upper plate U of a head H backward and integrally formed with the upper plate U to help the golfer aim when putting a golf ball, and a cavity CP depressed from the rear central portion of a face F of the head H. The cavity CP, as shown in FIG. 5c depicting a sectional view taken along the line C-C, is defined by the upper plate U, the face F, and a lower plate W of the head H.

A sound generating device of the head assembly of a golf club according to the fifth preferred embodiment of the present invention includes a sound unit K installed between the cavity CP and the sighting plate GP or integrally formed with the sighting plate GP. The sound unit K includes an approximate box-shaped unit box 100, made of metal or synthetic resin and fixed to the head H.

The unit box 100 of the sound unit K, as shown in FIG. 5b, accommodates an integrated metal sound disc 110 with a predetermined diameter therein. The sound disc 110 includes an elastic ring 110 inserted into the outer circumference of the sound disc 110 to absorb shock and a guide groove 112 formed in the outer circumference of the sound disc 110 below the position of the elastic ring 111.

The sound disc 110 is accommodated in a guide channel 121 upwardly slanted toward the face F of the head H and guide rails 120 formed in the guide channel 121 are inserted into a guide groove 112 of the sound disc 110, such that the sound disc 110 freely slides along the guide channel 121.

The unit box 100, as shown in FIG. 5c, includes the guide rails 120 downwardly slanted toward the rear side of the sighting plate P, and a slope a of the guide rails 120 is determined by experimentation.

Operation and effects of the head assembly of a golf club according to the fifth preferred embodiment of the present invention will be described as follows.

When the golfer take an initial pose for putting with the putter P1 in FIG. 5c, the putter P1 is level with the ground, and the sound disc 110 is positioned at the rear side of the unit box 100 due to the slope a of the guide rails 120.

Under these conditions, if the golfer rapidly backswings the putter P1, a horizontal directional component force, greater than friction between the sound disc 110 and the guide rails 120, is generated due to the slope a, and the sound dis 110 moves from the rear side of the unit box 100 to the face F of the head H of the putter P1.

At that time, the sound disc 110 collides against the wall of the unit box 100 to generate sound and vibration. Thus, the golfer understands that the golfer rapidly backswings, i.e. abnormally backswings.

Moreover, during the downswing, the golfer putts to prevent the horizontal directional component force, greater than the friction due to the slope a of the unit box 100, from being generated so that the golf can accustom himself/herself to a slowly downswing of the putter P1. Cocking (putting with the wrists) can also be prevented according to the same principle as illustrated above.

A putter P2, as shown in FIG. 5d, includes a unit box 140 having a sound ball 130 instead of the sound disc 110 and a guide pipe 141 instead of the guide channel 121, and its operation and effect are identical to those of the putter P1.

Embodiment 6

In a sixth preferred embodiment of the present invention, a sound generating device is installed to a head H of a putter P3.

The putter P3 includes a sighting plate GP integrally extending from an upper plate U of the head H to help the golfer aim, and a cavity CP depressed from the rear central portion of a face F of the head H. As shown in FIG. 6b showing a sectional view taken along the line D-D, the cavity CP is preferably defined by the upper plate U, the face F, and a lower plate W. A sound generating device of the head assembly of a golf club according to the sixth preferred embodiment of the present invention includes a plurality of sound fins 150, 151, and 152, fixed at regular intervals to a rear surface Hg of the head H, made of metal plates with a predetermined thickness sufficient to easily generate sound, and generating sound when swung.

Embodiment 7

A head assembly of a golf club according to a seventh preferred embodiment of the present invention applied to a driver D17 will be described in detail with reference to FIGS. 7a to 7e.

As shown in the drawings, the head assembly of a golf club according to the seventh preferred embodiment of the present invention is depicted in the drawings by removing a crown, i.e. the upper side of the head H. A hollow sensing pipe 160 is fixed to a bottom surface OB of a cavity CV to have a slope b near a neck N, to which a shaft (not shown) is installed, and is made of various materials. The hollow sensing pipe 160 has an opened end connected to an installation hole 162 of the bottom surface OB and a closed rear end. Moreover, as shown in FIG. 7b, the installation hole 162 has threads 162′ formed in the inner circumference thereof and a cap 163 couple with the installation hole 162 is formed with threads 163′. A sensing ball 161, having a slightly smaller diameter than the inner diameter of the hollow sensing pipe 160, is inserted into the installation hole 162 from a lower surface 164 of the head H, and the cap 163 closes the installation hole 162.

A single or more sensing ball 161 is made of metal and inserted into the installation hole 162.

The sensing ball 161 is inserted into the sensing pipe 160 to freely move within the hollow sensing pipe 160. If necessary, withdrawing the sensing ball from the sensing pipe 160 after opening the cap 163, the head assembly of a golf club according to the seventh preferred embodiment of the present invention may be used as a general head of a golf club without the sensing ball 161. The slope b can be variously determined by experiments and according to the kind and specifications of the driver D17 employing the head assembly of a golf club according to the seventh preferred embodiment of the present invention.

As shown in FIG. 7d illustrating the driver D17 employing the head assembly of a golf club according to the seventh preferred embodiment of the present invention, since, in the head H of the driver D17 directly before a normal swing is performed, the sensing pipe 160 is inclined to the neck B, i.e. the toe by the slope b, the sensing ball 161 is stably accommodated near the neck N in the sensing pipe 160.

In this state, the golfer backswings, the sensing ball 161 keeps its original position in the sensing pipe 160 due to the stationary inertia of the sensing ball 161 generated by backswing and the geometrical structure of the sensing pipe 160 before the head H reaches the peak of the backswing stroke. However, when the head H reaches the peak of the backswing stroke, the angular speed of the head H is 0 (zero) and the head H and the sensing pipe 160 are turned over. At that time, the sensing ball 161 loses the stationary inertia and rolls down along the sensing pipe 160 due to gravity.

The sensing ball 161 collides against the closed end of the sensing pipe 160 to generate sound and vibration. The golfer feels the vibration transmitted to the golfer's hands gripping the golf club and hears the sound so that the golfer understands that the head H reaches the peak of the backswing stroke. Thus, after this, the golfer understands that the backswing must be paused at the peak for a while and downswing must be slowly performed.

As shown in FIG. 7c, the installation angle and direction of the sensing pipe 161 where the position of the sensing ball 161 is turned over in the sensing pipe 160 of the driver D17 at the peak of the backswing stroke are suggested. In other words, as shown in FIG. 7c, the sensing pipe 160 may be installed to the driver D17 in the direction of A-A′ or B-B′.

Thus, when training using the head employing the head assembly of a golf club according to this preferred embodiment of the present invention, the golfer can perfect their backswing, whereby the golfer correctly hits the golf ball with the golf club to lengthen the distance.

When using the head employing the head assembly of the present invention, the golfer hears sound generated due to the various sound generating devices and air flowed by rapid change of angular speed of the head during the backswing and senses vibration generated by the vibration generating devices. Thus, since the golfer slowly swings the golf club to prevent the sound from being generated, rapid backswing that is apt to be the worst swing is corrected. Thus, the rapid swing is prevented and head-up that must be restricted is also minimized.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. A head assembly of a golf club comprising a sound generating device including one or a combination of at least two of the group of at least a single sound pipe for communicating a cavity formed in a body of a head of a driver with exterior, a sound slit formed in the sound pipe, and a sound hole formed in the head.

2. The head assembly of a golf club as set forth in claim 1, wherein the cavity of the body of the head of the driver is divided by at least one partition.

3. A head assembly of a golf club comprising a sound generating device including at least one metal resonant wall for dividing a cavity formed in a body of a head of a driver, and regularly or irregularly arranged to divide a part or whole of the cavity.

4. A head assembly of a golf club comprising a sound generating device, the sound generating device comprising:

a connection shaft installed to a center of gravity toward the wall of the cavity in a cavity of a body of a head of a driver; and

a vibration pipe or a vibration ball installed to an end of the connection shaft.

5. A head assembly of a golf club comprising a sound generating device, the sound generating device comprising:

a hollow sound device installed to a rear side of a face of a head of an iron and having various shapes such as a golf ball shape;

at least one sound hole formed in the hollow sound device and having various shapes; and

a sound slit.

6. A head assembly of a golf club comprising a sound generating device comprising:

an sighting plate extending from the upper surface of a head of a putter to the rear side thereof; and

a sound generating device detachable to the lower side of the sighting plate and including a sound unit for accommodating a sound disc or a sound ball guided by a slope and colliding against the wall of the head to generate sound and vibration when the head is positioned at the peak of the backswing stroke.

7. A head assembly of a golf club comprising a sound generating device including a plurality of metal sound fins extending from the rear side of a head of a putter and installed at regular intervals to generate sound due to vibration.

8. A head assembly of a golf club comprising a sound generating device, the sound and vibration generating device comprising:

a hollow sensing pipe fixed to a bottom surface of a head in a cavity of a body of the head of a driver, closed by a cap, and having a closed end; and

at least one sensing ball inserted into the hollow sensing pipe and colliding against the closed end to generate sound or vibration when the head is positioned at peak of the swing stroke.