JP2001178860A - Golf club - Google Patents

Abstract

PROBLEM TO BE SOLVED: To let a golfer know the direction of a face surface when the golfer swings a golf club. SOLUTION: In this golf club, at least one air hole piercing from the face surface of a golf club head to a back or side surface is formed and a sound- producing means where a sound-producing body is provided in a cylinder is mounted to the air hole for producing sound when the golf club is swung. The air hole is opened at a position apart from a geometrical center on the face surface in left and right and/or up and down directions, is tilted toward a center at the back face surface side, and the sound being produced by the sound- producing means is changed according to the position of the air hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club, and more particularly, to a golfer who knows the angle of a face to correct the swing by generating different sounds according to the angle of the face (striking surface) during a swing. To make it possible.

[0002]

2. Description of the Related Art In golf, the angle at which the face of a golf club enters due to a swing at the time of impact has a great influence on the direction in which the ball is hit. When the player hits the golf ball, the sweet spot on the face of the golf club hits at an angle of 90 ° to the intended flight direction of the golf ball. It can be said that an ideal swing trajectory enters at an angle of 90 ° with respect to the spherical direction.

[0003] However, it is not easy to make the face surface an ideal angle at the time of a swing, and the sweet spot on the face surface deviates from 90 ° with respect to the target golf ball flight direction, so-called slice face, In many cases, the golf ball is hit with a hook face, an up face, or a down face, and the hit golf ball turns left or right from the target direction.

[0004] If a golfer can know whether the face surface is a slice face, a hook face, an upper blow or a down blow at the time of a swing, the correction of the swing can be made closer to an ideal swing.

[0005] Conventionally, as a method of knowing the swing trajectory,
In general, a method is used in which a swing is photographed using a high-speed video or the like to make a determination. However, the determination of the swing from this video shooting has the advantage that the time to watch the video image is significantly different from the swing time and the golfer can grasp his or her own swing, but an immediate function to correct the swing can be expected Absent.

On the other hand, in JP-A-8-117380, as shown in FIG. 12, a plurality of through holes 2 are provided on a surface other than the face surface 1a of the club head 1, for example, the upper surface 1b. There has been proposed a golf club in which a tone generator 3 is attached to each of the golf clubs 2 to change the tone and the like for each through hole. In the golf club, a different sound is generated according to the angle of the face surface due to a change in the through hole through which air flows depending on the direction of the face surface, and the sound causes the golfer to change the direction and angle of the face surface. It is possible to be. As described above, if the golfer can know the direction of the face, that is, whether the face is a slice face or a hook face, every time the player swings, the correction effect is large.

[0007]

However, the above-mentioned Japanese Patent Application Laid-Open No.
In the golf club of −117380, since the through-hole 2 is other than the face surface 1a, the orientation of the face surface 1a
It does not always correspond exactly to the through hole 2 through which the air flows, so it is difficult to determine in which direction the actual face surface enters (hook face, slice face, upper blow or down blow). . In addition, since the through holes 2 and the sound generator 3 are provided on the upper surface and the side surface of the club, there is a problem that the golfer can easily see the golfer at the time of addressing and feel a sense of discomfort when swinging.

The present invention has been made in view of the above-described problems, and allows a golf club to swing without a sense of incongruity similarly to a golf club used for ordinary golf, and the face of the golf club becomes a hook face during the swing. It is an object of the present invention to provide a golf club that can accurately inform whether it is an upper blow or a down blow, although it is a slice face.

[0009]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a golf club head having at least one or more ventilation holes penetrating from a face surface (hitting surface) to a back face surface (back surface) or a side surface. And a sound generating means having a sounding body provided in a cylinder is attached to the vent so as to generate a sound when the golf club swings, thereby providing a golf club.

In the present invention, since the air holes are opened in the face surface, the air holes into which the air easily flows and the air holes into which the air hardly flows correspond exactly according to the direction of the face surface. Therefore, sound can be generated by the sound generating means provided in the air hole through which air easily flows, and the sound is generated in the direction of the face surface as compared with the conventional case where the air hole is opened on a surface other than the face surface. Sound can be matched exactly. Furthermore, since the face surface is at a position almost invisible to the golfer at the time of addressing, the ventilation hole does not enter the golfer's vision, and the swing can be performed without feeling uncomfortable.

It is preferable that the ventilation holes are linear,
A curved shape may be used as long as the curve does not hinder the flow of air. In addition, the ventilation hole may be divided into two or more passages communicating with the entrance opened to the face surface and opened to two or more exits. Conversely, a plurality of small inlets may be provided on the face surface at close positions, and these may be merged and opened to one outlet.

[0012] It is preferable that the vent hole is set so that an entrance area opening to the face surface is larger than an exit area opening to the back surface or the side surface. As described above, if the entrance area that opens to the face surface is increased, the amount of inflow air can be increased. Further, when the outlet area is smaller than the inlet area, the flow velocity of the air in the cylinder fitted into the ventilation hole is increased, and the sounding body arranged in the flow path in the cylinder generates large vibration. Sound can be generated reliably. Therefore, it is preferable to arrange the sounding body on the outlet side where the flow velocity is increased and the air is rectified.

[0013] The inlet area of the vent is 5 to 80 mm ² ,
Preferably 10 to 60 mm ² , exit area 3 to 70 m
m ² , preferably 5 to 50 mm ² , and the outlet area / inlet area is in the range of 0.1 to 0.9, preferably 0.2 to 0.5.

The shape of the air hole and the shape of the cylinder fitted in the air hole are not necessarily circular, but may be elliptical,
The shape may be a triangle, a square, or the like. Further, the sound wave generator constituting the sound generating means may be any as long as it generates a sound wave by vibrating with the flowing air, for example, by projecting a thin plate vibrator into a cylinder and changing the shape of the thin plate vibrator. May be different from each other. Also,
An orifice-shaped throttle may be provided on the inner surface of the cylinder to generate sound, and the noise generated may be varied by changing the flow path area of the throttle.

The material used for the club head of the present invention and the cylinder fitted into the ventilation hole as the sound generating means may be any of wood, plastic, metal, and the like, and therefore can be provided to any of iron and wood clubs. . However, in order to secure an appropriate head weight and balance, a metal material having a specific gravity of 1.0 or more and 5.0 or less is particularly preferable. That is, if the specific gravity is less than 1.0, there is a problem in strength, and if the specific gravity exceeds 5.0, it becomes too heavy.

The vent hole is opened at a position left and right or / and up and down from the geometric center (sweet spot) of the face surface, and a through hole inclined toward the center is formed on the back face surface side. The sound generated from the sounding means is changed depending on the position of the pore. In particular, it is preferable to provide a pair of symmetrical positions that are equidistant from the geometric center and generate different sounds when the slice face and the hook face are formed. That is, when the face surface is opened (the ball approaches the heel side of the club before the toe side), air flows into the heel side air hole, and sound is generated by the sound generating means attached to the heel side air hole. Sounds and signals that it is a slice (right-handed golfer). On the other hand, when the face surface is closed (the ball approaches the toe side of the club before the heel side), air flows into the toe side ventilation hole, and sound is generated by the sounding means attached to the toe side ventilation hole. Inform, that it is a hook.

Similarly, when a pair is provided at upper and lower symmetrical positions equidistant from the geometric center of the face surface,
Different sounds can be generated at the time of blow and down blow to notify the golfer that the blow is upper blow or down blow.

Therefore, if four ventilation holes are provided symmetrically to the left and right and up and down from the geometric center of the face surface, different sounds will be produced when the slice face, hook face, upper blow and down blow are performed. You can let golfers know. In addition, if two pieces are provided on each of the left and right sides and four pieces are arranged in the left and right direction, the golfer can be informed of whether the piece has deviated greatly from the sweet spot, has deviated slightly, or has deviated to the left or right. Further, a ventilation hole may be provided in the geometric center to make the generated sound different, and when an ideal swing is made, the golfer may be notified with a sound different from slices, hooks and the like.

Also, only one vent hole may be provided at the geometric center. In this case, a sound is produced when the ball is hit at the sweet spot on the face surface. That is, contrary to the above-described example, a sound is produced only when an ideal swing can be made, and it can be suitably used especially for a beginner.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a golf club according to the present invention will be described with reference to the drawings. 1 to 4
Indicates a golf club 10 according to the first embodiment. The golf club 10 has a club head 12 attached to a tip of a shaft 11, and the club head 12 is made of duralumin (JIS 7NO1) having a specific gravity of 2.78, and has a wood type.

The club head 12 has two ventilation holes 15 and 16 penetrating from the face surface (striking surface) 13 to the back face surface 14. The ventilation hole 15 is located on the left side of the figure from the geometric center position P1 of the face surface 13, ie, a position closer to the toe side, and the ventilation hole 16 is located on the right side of the figure, ie, a position closer to the heel side. Entrance 15 opening to face 13 of these ventilation holes 15, 16
a and 16a are located 20 mm apart from each other in the left-right direction from the geometric center position P1. The ventilation holes 15 and 16 have a symmetrical shape in which the ventilation holes 15 and 16 are inclined at an angle of 15 ° toward the center toward the back face surface 14 and are close to each other.
b is provided on the back face surface 14.

The ventilation holes 15 and 16 are provided at the entrances 15a and 16
The area a is an elongated conical shape having a larger area than the outlets 15b and 16b, and the tubes 17 and 18 are internally fitted over the entire length thereof and fixed with an instant adhesive. The cylinders 17 and 18 are also made of duralumin made of the same material as the head 12 and have ventilation holes 15 and 1.
6 to have an elongated conical cylindrical shape,
inner diameter 5 on the inlet side of cylinders 17 and 18 located on the sides a and 16a
mm, and the inner diameter on the outlet side located on the outlet 15b, 16b side is 3 mm.

In the vicinity of the outlets of the cylinders 17 and 18, whistle-shaped sounding bodies 19 and 20 are fixed to the inner peripheral surfaces of the cylinders 17 and 18, respectively. 20a
The sound generated from the sounding body 19 and the sound generated from the sounding body 20 are made different by changing the cross-sectional area of. Note that the sounding bodies 19 and 20 are not limited to a whistle shape.
As shown in FIG. 5, the thin plate diaphragm 2 is connected to the outlets 15b and 16b.
The first and second diaphragms 1 and 22 may be formed in a projecting manner, and a sound different from the sounding bodies 19 and 20 may be generated by changing the number and length of the thin diaphragms. That is, any configuration can be adopted for the sounding means including the cylinder and the sounding body, as long as the sound is generated when air flows in.

When the golf club having the above structure is swung, as shown in FIG. 4 (A), in the case of a square in which the face 13 enters in a trajectory perpendicular to the direction of the flying ball, It is difficult for air to enter the entrances 15a, 16a of the ventilation holes 15, 16 located on the left and right sides of the center position of the surface 13, so that the sounding bodies 19, 20 emit no sound or have a low sound. So no sound,
Alternatively, when the golfer cannot hear the sound with a small sound, the golf player can recognize that the face surface 13 has an ideal angle of hitting the ball straight and is an ideal swing.

On the other hand, as shown in FIG.
When the face surface 13 is opened and enters on a trajectory that becomes a slice face, a large amount of air flows into the entrance 15a of the toe side vent hole 15, so that sound is emitted from the sounding body 19 in the vent hole 15. Sounds. On the other hand, the heel side ventilation hole 2
No sound is emitted from the sounding body 20 because the amount of air flowing into 0 is small. The sound generated by the sounding body 19 allows the golfer to recognize that the face is open and the slice face, and thus correct the next swing so that the face is not open.

Conversely, as shown in FIG. 4C, when the face surface 13 is closed and enters on a trajectory that becomes a hook face, a large amount of air flows into the toe-side vent hole 16 and The sound is emitted from the sounding body 20 of the air hole 16, and no sound is emitted from the air hole 15 on the heel side. The sound played by the sounding body 20 allows the golfer to recognize that the hook face has been formed, and thus can correct the next swing so that the face surface does not close.

In each of the slice face and the hook face shown in FIGS.
5 and 16 are inclined toward the center toward the back face, so that the direction of the incoming air coincides with the direction of the incoming air, and the amount of inflow of air can be increased. As a result, the sounding bodies 19 and 20
As a result, the amount of air oscillated increases, generating a loud sound, and the golfer can evoke the direction of the face.

However, the ventilation holes 15 and 16 are not limited to a structure in which the air holes 15 and 16 are inclined in a direction of approaching from the face side to the back face side. As shown in FIG. The outlets 15b and 16b may be opened on the side surface 23 on the toe side and the side surface 24 on the heel side.

FIGS. 7 and 8 show a second embodiment. The difference from the first embodiment is that ventilation holes 25 and 26 are formed at positions 20 mm above and below the geometric center position P1 of the face surface 13. FIG. are doing. The crown side ventilation holes 25 and the sole side ventilation holes 26 are inclined at an angle of 15 ° in a direction approaching each other toward the back face surface 14. The sounding body 1 of the first embodiment is provided in the ventilation holes 25 and 26.
Tube 2 with sounding bodies 27 and 28 similar to 9 'and 20'
9 and 30 are internally fitted.

When the golf club of the second embodiment is swung, when the golf club enters the trajectory (level blow) in which the vertical direction of the face surface 13 is perpendicular to the flying direction, the center of the face surface is Ventilation holes 2 on both upper and lower positions
The air does not enter the air at 4, 25, and the sound does not sound or the sound is low. On the other hand, when the vehicle enters the orbit where the upper blow occurs, a large amount of air passes through the ventilation hole 25 on the sole side.
No sound is emitted from the air outlet 8 and no sound is emitted from the vent hole 25 on the crown side. Conversely, when the vehicle enters the orbit where the air blows down, a large amount of air passes through the ventilation hole 24 on the crown side, so that a sound is emitted from the sounding body 27 of the ventilation hole 24 on the crown side, and No sound. Pronunciation body 2
By changing the timbres of 7, 28, the golfer can know whether it is an upper blow or a down blow, and can correct the next swing.

FIG. 9 shows a third embodiment. The difference from the first embodiment is that a ventilation hole 31 is provided from the geometric center of the face surface 13 to the back face side, and a sounding body 32 is provided.
This is the point in which the cylinder 33 provided with is internally fitted. The tones produced by the sounding bodies 19 and 20 provided in the left and right ventilation holes 15 and 16 and the sounding body 32 of the central ventilation hole 31 are changed. The other configuration is the same as that of the first embodiment, and thus the same reference numerals are given and the description is omitted.

According to the golf club of the third embodiment, as in the case of the slice face and the hook face, the sound is generated from the sounding body 32 of the ventilation hole 31 even when the square face is formed. It can be determined that the surface 13 is an ideal swing trajectory in which the surface 13 enters in the direction perpendicular to the flying ball direction.

FIG. 10 shows a fourth embodiment in which the first embodiment and the second embodiment are combined. In the face surface 13, ventilation holes 15, 16 are provided at positions 20 mm left and right from the geometric center P1. And ventilation holes 25 and 26 at positions 20 mm above and below each other, and sound-injecting means composed of a cylinder having a sound-emitting body is fitted therein. The tones played by these four sounding bodies are changed. According to the golf club, the face surface 13 has a slice face, a hook face,
The upper blow and the down blow generate different tones, respectively, so that the golfer can know the direction of the face surface 13.

FIGS. 11A to 11E show a fifth embodiment, in which the club head 12 is provided with only one ventilation hole.
A sounding means composed of a cylinder having a sounding body is fitted in the ventilation hole. In FIG. 11A, only a vent hole 31 extending from the geometric center of the face surface 13 to the face back side is provided, and a cylinder 33 having a sound generator 32 is fitted therein. According to this golf club, sound is produced only when the face surface 13 becomes a square face on an ideal swing trajectory.
Therefore, if no sound is produced, the golfer can know that the swing is not an ideal swing.

In FIG. 11B, the ventilation holes 15 are provided only on the toe side, and sound is produced only when the face surface 13 becomes a slice face. Therefore, it can be effectively used as a slice corrector for a slicer in which the face surface 13 easily becomes a slice face. In FIG. 11C, a ventilation hole 16 is provided only on the heel side, and a sound is generated only when the face surface 13 becomes a hook face, so that it can be effectively used for correcting a hook of a hooker. FIG. 11 (D) has a vent hole 25 only on the crown side, and FIG. 11 (E) has a vent hole 26 only on the sole side. It can be used effectively for golfers who are easy to do.

[0036]

As is apparent from the above description, the golf club of the present invention is provided with a through hole which is opened on the face surface of the club head and is opened on the back surface (back face surface) or the side surface. The sounding means consisting of a cylinder with a sounding body is fitted inside the pores, so that the sounding body in the ventilation hole into which a large amount of air flows generates sound according to the direction of the face surface, and this sound causes the face to sound. The golfer can know the direction of the surface. In other words, whether the face of the golf club is a slice face when swinging,
Hook face, upper blow, down blow, or
You can know if it is an ideal square face, and you can correct the next swing accordingly.

In particular, in the golf club of the present invention, since the entrance of the ventilation hole is opened in the face surface, the ventilation hole through which a large amount of air flows and the ventilation hole through which the air does not easily flow in accordance with the direction of the face surface. The pores are clearly distinguished from each other, and the direction of the face and the generated timbre can be accurately matched, so that a highly accurate golf club for swing correction can be provided.

Furthermore, since the entrance of the ventilation hole is opened on the face surface which is difficult for the golfer to see at the time of addressing, the golfer does not feel uncomfortable due to the provision of the ventilation hole, and swings in a normal state without discomfort. Has the advantage that

[Brief description of the drawings]

FIG. 1 is an external view of a golf club according to a first embodiment of the present invention.

FIG. 2 is an enlarged external view of the club head of the first embodiment.

FIG. 3 is a sectional view of a club head.

FIGS. 4A, 4B, and 4C are diagrams showing the orientation of the face surface during a swing.

FIG. 5 is a sectional view showing a modification of the sounding body.

FIG. 6 is a cross-sectional view showing a modification of the first embodiment.

FIG. 7 is an external view of a club head according to a second embodiment.

FIG. 8A is a front view of a club head according to a second embodiment, and FIG. 8B is a plan view.

FIG. 9 is an external view of a club head according to a third embodiment.

FIG. 10 is an external view of a club head according to a fourth embodiment.

FIGS. 11A to 11E are schematic diagrams of a club head according to a fifth embodiment.

FIG. 12 is a drawing of a conventional club head.

[Explanation of symbols]

 Reference Signs List 10 golf club 11 shaft 12 club head 13 face surface 14 back face surface 15, 16, 25, 26, 31 vent hole 17, 18, 29, 30 cylinder 19, 20, 27, 28, 32 sounding body

Claims (6)

[Claims] 1. A golf club head comprising at least one or more ventilation holes penetrating from a face surface to a back face surface or a side surface of a golf club head, and sounding means having a sounding body provided in a cylinder is attached to the ventilation holes. A golf club wherein sound is generated when the club swings. 2. The golf club according to claim 1, wherein the material constituting the head body of the golf club is a metal having a specific gravity of 1.0 or more and 5.0 or less. 3. The golf club according to claim 1, wherein said vent hole has an entrance area opening on a face surface larger than an exit area opening on a back surface or a side surface. 4. The vent hole is opened at a position left and right or / and up and down from a geometric center of the face surface,
The golf club according to any one of claims 1 to 3, wherein the back face side has a through hole inclined toward the center, and the sound generated from the sound generating means is changed depending on the position of the ventilation hole. 5. The golf club according to claim 4, wherein the ventilation holes are provided at left-right symmetric positions and / or up-down symmetric positions from a geometric center. 6. The golf club according to claim 1, wherein the ventilation hole is provided at a geometric center.