KR20040064049A - Multi purpose golf shaft - Google Patents

Abstract

PURPOSE: A multipurpose golf shaft is provided to manufacture thickness and length of kick point according to a player's physical conditions, enable the length of shaft to be changed, and extend a replacing period of grip by making the grip rotated. CONSTITUTION: The multipurpose golf shaft includes: a main shaft(1) having a club-head and a tapered cavity pipe with a predetermined length; a length-variable shaft(2) which is comprised of tapered cavity pipe to be inserted movably on the outside of the grip(6) part of the main shaft(1), and is adjustable by a predetermined length; a fixing unit to fix the length-variable shaft(2) in the main shaft after the other side thereof is adjusted for length by being fixed in the length-variable shaft(2); and a grip(6) to be inserted into the length-variable shaft(2).

Description

Multi purpose golf shaft

The present invention relates to a multi-purpose golf shaft, and more particularly, to a multi-purpose golf shaft that can vary the length of the shaft according to the physical condition of the player, to enable the grip to be rotated many times.

In general, unlike other sports, golf is a sport that responds very sensitively depending on the driving posture of the player, the length of the pole, and the grip state of the grip. Particularly, when driving a driver shot or an iron shot in a golf game, the attitude of the player and the hitting point of the golf ball are important to improve the distance of the golf ball. Therefore, players try to be accurate shots by varying the length of the pole to set the correct shot direction according to the situation and condition of the field.

On the other hand, players who enjoy golf vary in height and length of the arm, while the factory-made golf club is composed of the grip 101, the shaft 102 and the club head 103 as shown in FIG. Since golf clubs are standardized in length, most players choose a golf club that is slightly longer than the proper length for the situation where the player needs to hold the shot and hold it at the time of purchase. A shot is taken with the foot and the ball spaced apart.

In addition, the grip of the grip is very important in golf practice, and most players grab and put the center of the grip in the actual field situation. However, although golf clubs are sized to hit the rear end of the grip, the golf clubs are swinging while adjusting the shaft length while moving the gripping section according to various situations because the length of the golf club does not suit the physical condition. .

Accordingly, since the amateur players play or practice with golf clubs that do not fit their bodies, the shot sensation is deteriorated and golf skills are not increased.

On the other hand, as shown in Figure 1, the grip portion is formed in a conical shape with a larger diameter toward the rear portion, the rubber grip is fitted. Therefore, since the player keeps swinging only one part when holding the grip, a lot of force is applied to the part where the thumb touches, and the part is worn out, and thus the entire rubber grip has to be replaced.

Accordingly, the present invention has been proposed to solve the above problems, and the thickness difference and the length of the kick point to match the physical condition of the player so that the kick point of the shaft (correct) and accurate The purpose of the present invention is to provide a multi-purpose golf shaft that can be manufactured in various ways, and can change the length of the shaft, and also allow the grip to be rotated so that it can be used multiple times.

1 is a perspective view showing the configuration of a general golf club.

Figure 2 is an exploded perspective view showing an embodiment configuration of a multipurpose golf shaft according to the present invention.

3 is a cross-sectional view showing the configuration of a length variable device that is a main part of the present invention.

4 is a cross-sectional view showing the configuration of a grip that is a main part of the present invention.

Fig. 5 is a first sectional view showing the construction of a main shaft which is the main part of the present invention.

6 is a second exemplary cross-sectional view showing the configuration of a main shaft which is a main part of the present invention.

* Explanation of symbols for the main parts of the drawings

1: Main shaft 2: Variable shaft

3: nut 4: bolt

5: gasket 6: rubber grip

11: closure tape

The present invention for achieving the above object, the main shaft having a predetermined length but made of a tapered hollow tube, the club head is provided at one end; A variable length shaft made of a tapered hollow tube so as to be fluidly fitted to an outer surface of the grip portion of the main shaft, the variable length shaft being adjustable by a predetermined length; One side is fitted to the grip portion of the main shaft, the other side is fixed to the variable length shaft, the fixing means for fixing the variable length shaft to the main shaft after adjusting the length; And it provides a multi-purpose golf shaft comprising a grip fitted to the variable length shaft.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings of FIGS. 2 to 6.

The multi-purpose golf shaft according to the present invention can vary the length of the handle portion according to the physical condition of the player, and implemented to use the grip several times, in the embodiment of the present invention has a predetermined length as shown in FIG. The main shaft (1) is made of a hollow tube tapered by a predetermined angle (θ), the club head is provided at one end; A variable length shaft (2) formed of a hollow tube tapered by a predetermined angle (θ), the variable length shaft being removably fitted to the grip portion of the main shaft (1) and adjustable by a predetermined length; A female thread 3a penetrated inside the grip part hollow part of the main shaft 1 is formed, and a groove 3b is formed on the outer circumferential surface by filling epoxy to fix the inner diameter of the main shaft 1. A nut 3; The outer diameter is fitted in close contact with the inner surface of the hollow portion of the length-variable shaft (2), the head portion (4a) formed with a hexagon wrench groove on one surface and a male thread (3a) fastened to the female thread (3a) of the nut (3) A bolt 4 made of 4b); And a gasket (5) provided between the head (4a) and the nut (3) of the bolt (4) to expand by the tightening force of the bolt (4) to press the inner diameter of the variable shaft (2); It consists of a grip 6 fitted to said variable shaft 2.

In this embodiment, as shown in Fig. 3, the length-variable shaft 2 has a structure in which one end thereof is chamfered at a predetermined angle, and the tape 11 for finishing is wound on the chamfered portion. In addition, an inner surface roughness (not shown) is formed at the inner surface contact portion of the variable shaft 2 in contact with the gasket 5 to provide a more firm contact force with the gasket 5. The inner surface roughness here may be achieved by kneading or scratching.

As shown in FIG. 4, an extended diameter portion 12 having at least one groove 12a formed in a circumferential direction at the end of the rubber grip 6 to support the palm rear portion from being pushed when swinging. Is provided, a through-hole for inserting a wrench is formed in the center of the expanded diameter portion 12. In this case, the groove 12a is formed in the enlarged tubular portion 12 to reduce the weight of the grip 6 so as to provide a buffering effect when the palm trailing edge is pushed back during the swing.

In addition, the gasket 5 in the present embodiment has a structure made of a rubber plate formed with a plurality of grooves 5a on the outer circumferential surface thereof so as to expand when providing the tightening force of the bolt 4.

In addition, the nut 3 has a structure in which an epoxy groove 3b is formed on its outer circumferential surface so as to be firmly attached to the inner circumferential surface of the main shaft 1, but the present invention is not limited thereto. In addition to (3b) to form a male thread, and to the inner circumferential surface of the end section of the main shaft (1) to form a female thread so that the screw (3) to the main shaft (1) can be firmly fixed by epoxy You may.

On the other hand, the main shaft 1 in the present invention, as shown in Figure 5, the entire section is made of carbon material, the thickness of each section so that the kick point (ℓ) has a one-way elastic force ) It has a structure with deviation. That is, the outer peripheral surface boundary portion of the grip portion and the kick point section is formed stepped, and the club head portion and the inner peripheral surface boundary portion of the kick point section are formed stepped.

In particular, in the present invention, the main shaft (1) of the grip section thickness (t ₃₎ with the kick point interval (ℓ), thickness (t ₂₎ and a club head of the side thickness _{(t 1) t 3> t} 2 yi <t ₁ of To be drawn as possible, the thickness of the t ₃ is formed to be thicker than t ₁ so that it can be bent in the correct one direction, such as a bow. Therefore, the existing shaft has a problem that the kick point (broadcast point) is formed wide and bend in any direction by 360 ° because there is a possibility that the accuracy is lost during the swing to send farther than when hitting, in the present invention Since the kick point section is bent in only one direction, it is possible to receive a stronger force due to the hit.

The main shaft 1 in the present invention can be adjusted to the length and thickness of the kick point (kick point) section according to the user's preferences, in particular, when forming a short kick point section, and suddenly reduce the shaking or distortion during swing and At the same time, the accuracy can be maximized, and because it uses elasticity that bends sharply in the opposite direction to the swing, it can have a greater distance because it can receive more elasticity when hitting.

This embodiment shows an example in which the kick point section of the main shaft is processed to have a thickness thinner than that of the other section, but is not limited thereto, and is manufactured by applying an elastic dissimilar material to the kick point section when forming the hollow shaft. You may.

In addition, as shown in FIG. 6, in order to reinforce the thickness of the grip section and the club head section, ribs protruding in the axial direction by a predetermined section at intervals of 90 ° may be provided on their inner circumferential surfaces.

Referring to the working state of the present invention configured as described above are as follows.

First, the nut 3 is inserted into the hollow portion of the handle part of the main shaft 1, and the epoxy is cured by filling the groove 3a formed in the nut 3 and then inserting the epoxy into the main shaft 1. The nut 3 is firmly fixed to the main shaft 1. Then, the bolt (4) and the gasket (5) is fitted to the variable-length shaft (2), and after the predetermined length is fastened the bolt (4) to the nut (3). At this time, as indicated by the arrow in the drawing, the cross-sectional area of the gasket 5 is expanded by the tightening force of the bolt 4, in particular the cross-sectional area is further extended by the groove 12a formed in the gasket 5 It is pressed against the inner diameter of the variable-length shaft 2.

Next, when the rubber grip 6 is to be fitted to the variable shaft 2, a double-sided tape (not shown) is first attached to the outer circumferential surface of the variable shaft 2, and volatile on the outer surface of the tape. When the material is applied, the adhesive material of the tape turns into a slippery liquid so that the rubber grip 6 can be simply pushed onto the outer peripheral surface of the variable shaft, and after a certain time, the volatile substance of the adhesive is blown off. The rubber grip 6 is completely adhered and fixed to the outer circumferential surface of the variable shaft 2 while going.

The main shaft 1, the variable-length shaft 2 and the rubber grip 6 are coupled by a series of such assembly processes. On the contrary, in the case of increasing or decreasing the length of the main shaft 1 according to the physical condition of the player, the groove formed in the head 4a of the bolt 4 through the through hole of the rubber grip 6 with a hexagon wrench. As the clamping force is released, the extended gasket 5 is restored to its original position so that the variable shaft 2 is movable from the main shaft 1, and after adjusting to an appropriate length, the bolt ( 4) Tighten the variable length shaft (2) to the main shaft (1) to complete the length adjustment.

In addition, when changing the position of the rubber grip (6) fitted to the variable shaft (2), that is, if the part where the thumb of the player touches a lot of wear, use a hexagon wrench to loosen the bolt (4) When the variable shaft 2 is free to flow from the main shaft 1, the variable shaft 2 is rotated by a predetermined angle. Accordingly, when the rubber grip 6 fitted to the variable shaft 2 is rotated together, the damaged part of the rubber grip 6 is replaced, and then the bolt 4 is tightened again. The damaged part of the position is shifted by the rotated angle so that the other part of the rubber grip 6 becomes the thumb contact part. By doing so, the rubber grip 6 can be used many times while being rotated in various directions.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

According to the present invention as described above, if the fixing means using the bolt, nut and gasket to firmly secure the main shaft and the variable shaft, and to increase or decrease the length of the main shaft according to the physical condition of the player By releasing the fastening force of the bolt of the fixing means has the effect of simply adjusting the length by increasing or decreasing the variable length shaft fitted to the main shaft.

In addition, when the worn portion of the rubber grip is to be changed, the same process as the length adjustment is repeated by repeating the length of the variable shaft, so the other effects that can be used many times by rotating the rubber grip in multiple directions Has

Claims (14)

A main shaft having a predetermined length but made of a tapered hollow tube, and having a club head at one end thereof; A variable length shaft made of a tapered hollow tube so as to be fluidly fitted to an outer surface of the grip portion of the main shaft, the variable length shaft being adjustable by a predetermined length; And One side is fitted to the grip portion of the main shaft, the other side is fixed to the length-variable shaft fixing means for fixing the length-variable shaft to the main shaft after adjusting the length Multipurpose golf shaft comprising a. The method of claim 1, And a grip that is inserted into and fixed to an outer circumferential surface of the variable shaft and rotates together with the variable shaft. The method of claim 1, The main shaft Multipurpose golf shaft, characterized in that the thickness (t) deviation for each section to have a one-way elastic force. The method of claim 3, wherein The main shaft is processed such that the grip section section thickness (t ₃ ), the kick point section (l) thickness (t ₂ ) and the club head side thickness (t ₁ ) in the order of t ₃ > t ₂ <t ₁ , the t ₃ the multi-purpose golf shaft, characterized in that the formed thicker than the thickness t _1. The method of claim 4, wherein And a reinforcing rib provided on the inner circumferential surface of the grip section predetermined section of the main shaft and the club head-side predetermined section to protrude axially at a predetermined angle. The method according to any one of claims 1 to 5, The variable-length shaft is one end thereof is cut at a predetermined angle is chamfered, multi-purpose golf shaft, characterized in that the end of the grip is formed with an extended diameter to support the front end of the palm to prevent the sliding. The method of claim 6, At least one groove in the circumferential direction is formed on the outer peripheral surface of the enlarged diameter portion of the grip multi-purpose golf shaft. The method of claim 6, The multipurpose golf shaft further comprises a tape wound on the chamfered portion of the variable length shaft. The method according to any one of claims 1 to 5, The fixing means A nut inserted into a hollow portion of the main shaft and having a penetrated female thread formed therein; A bolt that is fitted to an inner surface of the hollow part of the variable-length shaft, and has a head having a groove formed on one surface thereof and a male thread that is fastened to a female thread of the nut; And Gasket provided between the head of the bolt and the nut is expanded by the tightening force of the bolt to press the inner diameter of the variable shaft Multipurpose golf shaft comprising a. The method of claim 9, A plurality of grooves are formed on the outer circumferential surface of the nut so that the nut is fixed to the main shaft, wherein the groove is filled with epoxy. The method of claim 10, A male thread is formed on the outer circumferential surface of the nut together with an epoxy groove, and a female thread is formed on the inner circumferential surface of the end section of the main shaft, and is firmly fixed by epoxy while the nut is screwed to the main shaft. Golf shafts. The method of claim 9, The gasket is a multi-purpose golf shaft, characterized in that made of a rubber disc formed with a plurality of grooves on the outer circumferential surface so as to expand when providing a tightening force of the bolt. The method according to any one of claims 1 to 5, The grip is a multi-purpose golf shaft, characterized in that when the coupling force is released so that the variable-length shaft flows from the main shaft is rotated to change the worn portion so that the user can use multiple times. The method of claim 9, The inner surface contact portion of the variable-length shaft in contact with the gasket is the inner surface roughness is given by any one of the process of kneading and scratching.