WO2021015487A1

WO2021015487A1 - Golf club having reference system for improved address accuracy

Info

Publication number: WO2021015487A1
Application number: PCT/KR2020/009382
Authority: WO
Inventors: 김정식; 최재형
Original assignee: 김정식; 최재형
Priority date: 2019-07-23
Filing date: 2020-07-16
Publication date: 2021-01-28
Also published as: KR102105267B1

Abstract

The present invention relates to a golf club characterized in that: a socket includes a hollow formed therein through which a shaft passes; an outer diameter of the socket at an upper side thereof is smaller than an outer diameter of the socket at a lower side thereof, and thus the socket has an inclined surface gradually widening from the upper side to the lower side; a reference system fixing groove to which a tank is fixed in the direction of a bottom of a club head is formed in the socket such that a reference system is installed therein; a vertical inner surface is formed on the reference system fixing groove so as to maintain the same angle as the shaft; an insertion space is formed at a front portion of the socket such that the reference system is coupled to and decoupled from the insertion space in front of the socket in an assembly manner; the reference system is surrounded by the reference system fixing groove, is formed so as to be transparent and to extend in the form of a circular tank which is filled by injecting liquid into a bore thereof, and is installed such that a color display part of a circular shape is floated on the uppermost side of the liquid; and a criss-cross line of a criss-cross shape is formed in the center of the upper side of the tank so as to provide an accurate starting point.

Description

Golf club with reference system for improved address accuracy

The present invention relates to a golf club having a reference system for improved address accuracy, and more specifically, the lie angle and the socket angle at the starting point at the address using irons used in Tees or Fairways are identical. Therefore, it relates to a golf club having a reference system for improving accuracy for addressing and having an improved performance against typos of a golf ball by providing the most ideal and accurate angle (start).

As is well known, even if the golfer controls the swing of the golf club when hitting the ball, the golf head acts like a free mass that moves at a certain speed. Most of the energy of this moving mass is transferred to the golf ball in an instant, and the golf ball compressed against the front of the club will return to its original spherical shape and bounce vigorously.

Among the factors related to the ideal hitting of a golf ball, the most important factor is that the hitting point of the hitting surface of the golf club head should be placed below the center of the head. The more you bring it to the bottom of the center, the higher the angle you can hit and the more perfect you can hit.

Since recent decades, many golf clubs have been manufactured by creating a golf club head called "a club head with a heavier bottom part", so that the above object can be easily achieved by golfers.

Since most of the mass of the golf club is concentrated on its bottom, the center of the head is lowered, which makes it easier for the golfer to bring the center of the golf club head to the lower side than the center of the golf ball.

Another important factor related to the ideal hitting of a golf ball is, first, the hitting point of the hitting surface of the club head should be ideally aligned with the center of the club head and the center of the golf ball.

Second, the hitting surface of the club head must be perpendicular to each of the golf ball's planned surface movement paths. The center of the golf club head and the hitting point and the center of the golf ball can all be more accurately aligned when they lie on a single vertical plane. Accordingly, it is considered that the golf club head will be accurately aligned and perpendicular when the theoretical plane including these three points is aligned with the plan surface movement path of the golf ball.

Third, since each golfer has different body shape and constitution at address, the most ideal starting point (reference point) can be presented by making sure that the lie angle, which is the correct starting point, and the angle of the socket match.

Departure from the ideal alignment will reduce the maximum energy transfer effect when hitting, and deviation from the right angle will cause the golf ball to deviate from the planned normal course.

The following examples are intended to achieve a complete understanding of the above-mentioned alignment and right angle problems. First, consider a case where the golf club head is aligned correctly but is not perpendicular to the planned flight path of the golf ball. In this case, the maximum energy will be transmitted to the golf ball, but the moving path of the golf ball will deviate from the planned course. As a second case, consider a case where the club head is at a right angle at the time of batting, but the batting point deviates laterally toward the front or rear portion of the club head, and accurate alignment is not achieved. In such a case, the amount of energy transmitted does not reach the maximum, so a perfect hitting is not achieved and the golf ball cannot fly far. And the club head will be rotated or twisted and the right angle position will change with this rotation.

The term rotation or twist is defined as the rotation of the club head upon striking about an axis that passes through the center of the club head and is parallel to the axis of the golf club shaft.

Even a highly skilled and experienced golfer will understand that it will be very difficult to achieve a highly perfect alignment and right angle. Therefore, most golf clubs are composed of iron golf club heads with increased moment of inertia due to relatively large mass concentration at the rear and front of the club head, thus maximizing energy transfer and suppressing rotation due to misaligned hitting of the golf ball. Can be prevented.

The golf club iron head of the prior art is designed in the above-mentioned general manner so that the optimum anti-rotation properties are achieved and this purpose can be successfully achieved in various club heads. One basic technique used in various ways in various prior art iron golf club heads is to redistribute mass by forming a central concave portion on the back of the head or forming a concave portion at a predetermined portion and position of the club head.

Another technique used is to redistribute the mass of the indentation by forming a relatively small indentation on the back of the clubhead, and to concentrate the load at predetermined positions at the front and rear of the clubhead.

Depending on other design parameters, the anti-rotation properties of the iron golf club head depend on the mass redistributed or concentrated in the rear and front parts of the club head, and the specific mass concentration ratio and position. As mentioned above, in the prior art, a number of attempts have been made to achieve optimum anti-rotation properties.

Therefore, it is desirable to provide a new set of golf clubs having an iron head configured to be able to provide improved anti-rotation properties compared to the prior art.

Therefore, the present invention was conceived in order to solve these conventional shortcomings, and the problem of the present invention is to hold the correct angle (start point) so that the lie angle and the angle of the shaft coincide at the address of the golfer so that the correct hitting of the golf ball is made. It aims to do.

Another object of the present invention is to provide an accurate starting point by installing a reference system in a socket to which an iron head and a shaft are connected.

In the present invention, a hosel with a club head having a batting surface formed on the lower side of the shaft with a handle installed on the upper side is installed, the shaft is fixed to the inner diameter of the hosel, and a reference system fixing groove is formed above the hosel, and the tank is fixed and separated. In a golf club comprising an iron formed of a socket with an insertion space installed,

The socket has a hollow through which the shaft passes, the outer diameter is small in the upper side and the lower side is large, so that it has an inclined surface that becomes wider from the upper side to the lower side. To be installed;

The reference system fixing groove includes a vertical inner surface formed to maintain the same angle as the shaft, and an insertion space formed in the front so that the reference system is assembled and separated from the front,

The reference system is enclosed in the reference system fixing groove and is formed in a transparent shape and formed into a circular tank to inject and fill the inner diameter of the liquid, and the circular color indicator is installed so as to float on the uppermost side of the liquid, and a crisscross in the upper center of the tank. It is characterized by presenting an accurate starting point through a crisscross line.

The present invention holds the correct angle (starting point) so that the angle of the bottom lie of the club head and the angle of the shaft coincide with the golfer's address so that the club head accurately hits the golf ball when swinging, thereby accurately determining the direction and trajectory of the ideal golf ball It is to achieve the effect it provides.

The present invention provides an effect of providing an accurate starting point by installing a level gauge in a socket connecting the iron head and the shaft so that the lie angle and the shaft angle are matched through the reference system at the time of the golfer addressing.

1 is a front view showing a preferred address state of the present invention

2 is a front view of an iron showing a state in which the reference system of the present invention is installed

3 is a side view of an iron showing a state in which the reference system of the present invention is installed

4 is a front view of a club head showing a state in which the reference system of the present invention is installed

5 is a side view of a club head showing a state in which the reference system of the present invention is installed

6 is a perspective view of a state in which the socket and the reference system of the present invention are separated

7 is a cross-sectional view of a state in which the reference system is installed in the socket of the present invention

Figure 8 is a cross-sectional view of the installation state of the reference system installed in the socket of the present invention

9 is a cross-sectional view of the socket of the present invention

10 is a plan sectional view of a state in which the reference system is installed in the socket of the present invention

11 is a plan sectional view of a state in which the socket fixture fixing the reference system of the present invention is installed in the socket

12 is a plan sectional view showing another embodiment of a state in which the socket fixture fixing the reference system of the present invention is installed in the socket

Hereinafter, the most preferred embodiments of the present invention will be described in more detail according to the accompanying drawings.

1 is a front view showing a preferred addressing state of the present invention, FIG. 2 is a front view of an iron showing a state in which the reference system of the present invention is installed, and FIG. 3 is a side view of the iron showing a state in which the reference system of the present invention is installed. 4 is a front view of a club head portion showing a state in which the reference system of the present invention is installed, and FIG. 5 is a side view of the club head portion showing a state in which the reference system of the present invention is installed.

The shaft 13 with the handle 14 installed on the upper side is fixed to the inner diameter of the hosel 12 of the club head 10 from the lower side, and is made of an iron on which the socket 20 is installed above the hosel 12.

The club head 10 allows the floor 15 to hold the correct angle in the address posture where the hitting surface 11 hits the golf ball 18, and the floor 15 is the angle of the lie angle and the socket 20 Is to match, and the ideal angle is maintained at 45° based on the pitching.

The socket 20 is independently provided with a socket fixture 40, or by installing the reference system 30 in the reference system fixing groove 23 in an integral form, the golfer can move the club head 10 through the reference system 30 at the address. It is installed so that the hitting surface 11 can hold the correct starting point in a state where it can hit the golf ball 18.

6 is a perspective view showing a state in which the socket and the reference system of the present invention are separated, FIG. 7 is a cross-sectional view of a state in which the reference system is installed in the socket of the present invention, and FIG. 8 is a cross-sectional view of the reference system installed in the socket of the present invention. 9 is a cross-sectional view of the socket of the present invention, Figure 10 is a plan view showing a state in which the reference system is installed in the socket of the present invention.

The socket 20 connecting the hosel 12 and the shaft 13 is formed so that the hollow 22 through which the shaft 13 penetrates is penetrated, and the outer diameter is small in the upper side and the inclined surface is wider from the upper side to the lower side. To have (21), the reference system fixing groove 23 is formed in the direction of the bottom 15 of the club head 10 so that the reference system 30 is installed.

The reference system fixing groove 23 has a vertical inner surface 25 formed to maintain the same angle as the shaft 13, and an insertion space 24 is formed in the front so that the reference system 30 is assembled and separated from the front. Is to do.

The reference system 30 is formed in a long cylindrical tank 31 to fill the inner diameter by injecting a liquid 32, and the color display unit 34 is floated in a circular shape on the uppermost side of the liquid 32, In the upper center of the tank 31, a crisscross line 33 is formed in the form of a crisscross, so that the golfer can set the correct starting point through the color display section 34 and the crisscross line 33.

The reference system fixing groove 23 surrounds the reference system 30 and is fixed, and the internal vertical inner surface 25 is formed in a vertical state with the shaft 13.

The reference system 30 is preferably made of transparent, and provides a state in which a circular color display unit 24 is floating on the upper side of the liquid 32, and has colors such as red, black, and yellow for easy visual identification. It is desirable to apply either a distinct color or a fluorescent color.

11 is a plan sectional view showing a state in which the socket fixture fixing the reference system of the present invention is installed in the socket, and FIG. 12 is a plan sectional view showing another embodiment of the state in which the socket fixture fixing the reference system of the present invention is installed in the socket. .

Fixing the reference system 30 can be installed independently without being integrally installed in the socket 20, and as shown in FIG. 11, a socket fixing groove 41 for wrapping and fixing the socket 20 is formed. , After the reference system fixing groove 23 is formed in front of the socket fixing groove 41, an insertion space 24 is formed in the front center thereof, and the socket fixing tool 40 is installed so that the reference system 30 can be assembled and fixed. It is done.

And as shown in FIG. 12, the reference system fixing groove 42 is formed in a circular shape to fix the reference system 30, and after forming the socket fixing groove 41 in front of the reference system fixing groove 42, the socket The socket insertion space 43 is formed in the center of the front of the fixing groove 41 and consists of a socket fixture 40 installed to be assembled and fixed to the socket 20.

The socket fixture 40 is formed to assemble and separate the reference system 30 or to assemble and separate the socket 20 by making the socket fixing groove 41 and the reference system fixing groove 42 have an Ottogi-shaped groove shape. It is desirable.

A golf club having a reference system for improved address accuracy of the present invention having such a configuration, as shown in Figs. 1 to 10, through the insertion space 24 of the tank 31 of the reference system 30 When combined, the outside is wrapped and fixed in the reference system fixing groove 23.

After fixing the reference system 30 to the front of the socket 20, as shown in Figs. 1 and 3, when the golfer takes the address posture, the hitting surface 11 of the club head 10 becomes the golf ball 18 ), and when the bottom 15 is maintained at an exact angle with the ground, the color display unit 34 of the reference system 30 is accurately aligned with the center of the crisscross line 33 while floating in the liquid 32. .

However, if the starting point of the correct angle cannot be obtained, the color display unit 34 does not coincide with the center of the crisscross line 33 and is in the direction of a twisted posture in four directions if the correct starting point cannot be obtained according to the body shape, constitution, and characteristics of the address posture. Since the moving state is provided in either direction, it is possible to visually check it in the address posture.

In the address posture, if it is twisted in any direction from the crisscross line 33 through the color display section 34 of the reference system 30, the address posture is corrected so that the color display section 34 coincides with the center of the crisscross line 33. When correcting the posture, the bottom 15 of the club head 10 matches the angle of the lie angle and the socket 20, and at the same time, it is possible to guide the correct starting point.

Therefore, the golfer has the angle of the lie and the socket 20 to match the angle of the lie and the socket 20 through a state in which the color display unit 34 of the reference system 30 is accurately aligned with the center of the crisscross line 33 in the address posture. The starting point is guided to provide the most ideal angle so that the hitting surface 11 of the club head 10 can accurately hit the golf ball 18, so that the golf ball 18 is accurately placed on the hitting surface 11 through an accurate starting point. It is to ensure that the trajectory and direction of the hitting ball are accurately achieved.

The reference system 30 can be freely fixed and separated through the insertion space 24, and the installed state provides the most ideal angle and an accurate starting point (reference point), and the vertical rear surface 25 is the hosel 12 and the shaft ( 13) and the reference system 30 will be installed to maintain a straight line.

The reference system 30 provides a transparent state, provides a variety of colors through the color display unit 34, and allows the angle of the lie and the socket 20 to coincide through the crisscross line 33 so that the correct angle can be obtained. will be.

On the other hand, in the present invention, the reference system fixing groove 23 can be integrally installed in the socket 20, and as shown in FIGS. 11 and 12, the socket fixing groove 41 of the independent socket fastener 40 is a socket. It is to be wrapped around (20) to be fixed, and the reference system 30 through the insertion space 24 in the front reference system fixing groove 42 can be easily installed and detached.

And since the reference system fixing groove 42 is blocked, the reference system 30 is inserted into the reference system fixing groove 42 to be fixed, and it can be assembled by inserting into the socket 20 through the socket insertion space 43 of the socket fixing groove 41. By doing so, it is possible to install and separate through the socket fixture 40 that is installed independently from the socket 20.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains can make various modifications without departing from the essential characteristics of the present invention.

Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

In the present invention, after installing the reference system through the reference system fixing groove in the socket, it is possible to check whether the correct starting point is provided so that the lie angle and the socket angle are matched in the address posture, and the most ideal starting point is presented on the hitting surface after confirming the correct starting point. It is to provide a very useful invention to send the ball in the correct direction by making an accurate golf ball hit.

[Explanation of code]

10: club head 11: hitting surface

12: hosel 13: shaft

14: handle 15: bottom

18: golf ball 20: socket

21: slope 22: hollow

23: reference system fixing groove 24: insertion space

25: vertical inner surface 30: reference system

31: tank 32: liquid

33: crisscross line 34: color display

40: socket fixture 41: socket fixing groove

42: reference system fixing groove 43: socket insertion space

Claims

A hosel 12 with a club head 10 formed with a hitting surface 11 is installed below the shaft 13 with a handle 14 installed on the upper side, and the shaft 13 is fixed to the inner diameter of the hosel 12 , In a golf club comprising an iron formed of a socket 20 in which a reference system fixing groove 23 is formed above the hosel 12 and an insertion space 24 for fixing and separating the tank 31 is installed,

The socket 20 has a hollow 22 through which the shaft 13 passes, and the outer diameter is small in the upper side and the lower side is large, so that the socket 20 has an inclined surface 21 that becomes wider from the top side to the bottom side. The reference system fixing groove 23 to which the tank 31 is fixed in the direction of the bottom 15 is formed so that the reference system 30 is installed;

The reference system fixing groove 23 has a vertical inner surface 25 formed to maintain the same angle as the shaft 13, and an insertion space 24 is formed in the front so that the reference system 30 is assembled and separated from the front. Including what to do,

The reference system 30 is enclosed in the reference system fixing groove 23 and is formed in a transparent shape and formed into a circular tank 31 to fill the inner diameter by injecting a liquid 32, and at the uppermost side of the liquid 32 A reference system for improved address accuracy, characterized in that the correct starting point is presented through a crisscross line 33 in the form of a crisscross in the upper center of the tank 31. Having a golf club.
The method of claim 1,

The socket 20 has a reference system fixing groove 42 formed in a circular shape to fix the reference system 30, and after forming a socket fixing groove 41 in front of the reference system fixing groove 42, the socket fixing groove ( It consists of a socket fixture 40 to be installed so as to be assembled by forming a central socket insertion space 42 in front of 41);

The socket fixture 40 is formed to assemble and separate the reference system 30 or to assemble and separate the socket 20 by making the socket fixing groove 41 and the reference system fixing groove 42 have an Ottogi-shaped groove shape. Golf club having a reference system for improved accuracy for addressing, characterized in that.