KR102847564B1 - Shaft-insertable weight adjustment apparatus for golf club and cap-removable golf grip for inserting and withdrawing the same - Google Patents

Abstract

The present invention has as its technical object the provision of a shaft-insertable weight adjustment device for a golf club capable of adjusting the weight of a golf club so that the force applied to a ball during the pendulum motion of the golf club can be more precisely controlled. To this end, the shaft-insertable weight adjustment device for a golf club of the present invention is a shaft-insertable weight adjustment device for a golf club for adjusting the weight of a shaft for a golf club, and may include: an upper fixing part for being fixed to the inner surface of the shaft; a lower fixing part for being fixed to the inner surface of the shaft; and a weight adjustment part for connecting the upper fixing part and the lower fixing part and adjusting the weight.

Description

{Shaft-insertable weight adjustment apparatus for golf club and cap-removable golf grip for inserting and withdrawing the same}

The present invention relates to golf.

Generally, golf is a sport where players hit a stationary ball on a course with a golf club into a designated hole, competing for the number of strokes required to reach that point. The golf club used in this sport consists of a head, a shaft, and a golf grip. The golf grip is attached to the opposite end of the shaft from the head and is made of silicone or other materials. In particular, grips are being developed to improve the golfer's grip feel and prevent slipping.

A golf course is a ground designed for playing golf, typically consisting of 18 holes. Each hole is divided into four areas: the teeing ground, through the green, green, and hazard.

Among these, the green refers to an area where the grass is kept short and maintained for putting. On this green, a hole is placed for the final ball placement on each hole. This hole is called a "hole" or "cup." A flagpole is placed in each cup to indicate its location from a distance. The cup's diameter is set at 108mm.

Putting is a stroke used to place the ball on the putting green into the hole using a golf club, such as a putter. Each hole's par is calculated as two putts. In other words, half of the typical 18-hole course par of 72, or 36, is a putt, and putting skill can make a significant difference in your score.

A good setup posture, alignment, feel, feel, green reading, and the scientific technique of the stroke are all essential for good putting. However, without a consistent and repetitive rhythm, you will never achieve great putting. Therefore, the most important thing when putting is rhythm. Keep your wrists straight and your arms lightly swinging like a pendulum.

Rhythm acts like a lubricant for your stroke. To achieve rhythm, you need to relax your wrists and putt lightly, like the ticking of a clock pendulum. Putting with rhythm allows you to maintain a good putting posture.

However, the putter, which is one of the existing golf clubs, has a problem in that it has a limited ability to control the force applied to the ball during the putter's pendulum movement because its weight is fixed at one.

The technical problem of the present invention is to provide a shaft-insertable weight adjustment device for a golf club that can adjust the weight of the golf club so that the force applied to the ball during the pendulum movement of the golf club can be more precisely controlled.

Another technical object of the present invention is to provide a cap-detachable golf grip that allows a weight adjustment device to be easily inserted or removed into the shaft so that a golfer can adjust the weight of the golf club at any time.

In order to achieve the above object, a shaft insertion type weight adjustment device for a golf club according to one embodiment of the present invention is a golf club shaft insertion type weight adjustment device for adjusting the weight of a shaft for a golf club, comprising: an upper fixing part for being fixed to an inner surface of the shaft; a lower fixing part for being fixed to an inner surface of the shaft; and a weight adjustment part for connecting between the upper fixing part and the lower fixing part and adjusting the weight; wherein the weight adjustment part comprises: at least one first weight member having a first weight and having an elongated shape; a first female screw part formed at a lower portion of the first weight member; a first male screw part provided at an upper portion of the first weight member; at least one second weight member having a second weight and having an elongated shape; a second female screw part formed at a lower portion of the second weight member; and a second male screw part provided at an upper portion of the second weight member; wherein the at least one first weight member and the at least one second weight member are mixed with each other and corresponding female screw parts and male screw parts are connected to each other to form a single elongated rod shape.

The shaft insertion type weight adjustment device for a golf club according to one embodiment of the present invention described above may further include an upper connecting unit connecting the upper fixing part to a male screw part formed at an upper portion of the weight adjustment part; and a lower connecting unit connecting the lower fixing part to a female screw part formed at a lower portion of the weight adjustment part.

The upper connecting unit may include: an upper finishing member; a screw fastening groove formed in a lower portion of the upper finishing member and into which the male screw portion of the weight adjusting member is fastened; and an upper through hole formed in the upper fixing member and through which the male screw portion of the weight adjusting member passes.

The lower connecting unit may include a lower through hole formed in the lower fixing portion; and a fastening bolt fastened to the female screw portion of the weight adjusting portion through the lower through hole.

Each of the upper fixing part and the lower fixing part may include a ring-shaped fixing body; and a radially extending part made of an elastic material that is provided on the entire circumferential surface of the fixing body and extends in the radial direction thereof and contacts the inner surface of the shaft.

The above radial extension may extend longer than the inner radius of the shaft based on the center of the fixed body.

The radial extension may include a plurality of radially spaced cutouts that are recessed in the center to ensure smooth insertion during insertion into the interior of the shaft.

The shaft insertion type weight adjustment device for a golf club according to one embodiment of the present invention described above may further include a shaft catch portion provided on the upper end of the upper finishing member and having a size larger than the inner diameter of the shaft.

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Meanwhile, a cap-detachable golf grip according to another embodiment of the present invention is a cap-detachable golf grip used to insert and withdraw the shaft-insertable weight adjustment device for a golf club according to one embodiment of the present invention into the interior of a shaft, the grip comprising: a grip body having a hollow shape with both ends open and enclosing the shaft; a cap for blocking an end opening of the grip body; and a cap-detachable portion for attaching and detaching the cap to the grip body; wherein the cap-detachable portion comprises: a fastening protrusion provided on one of the grip body and the cap; a protrusion fastening groove formed on the other of the grip body and the cap to be attached and detached to the fastening protrusion; and a rotation guide portion for detachably fastening the fastening protrusion to the protrusion fastening groove when the cap is rotated; the rotation guide portion comprises: a fixing bracket provided on the inner surface of the grip body and having a bracket through-hole for passing the shaft; an inner hinge portion protruding upward in the longitudinal direction of the center of the fixing bracket and having a cylindrical shape, the fastening protrusion being provided; And an outer hinge part having a cylindrical shape and protruding downwardly on the bottom surface of the cap, rotatably surrounding the inner hinge part, and having a protrusion fastening groove formed therein so as to be fastened to the fastening protrusion while being rotated;

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The cap attachment/detachment portion may further include a protrusion catch prevention portion that prevents the fastening protrusion from being caught on the outer hinge portion while the outer hinge portion is fitted along the length direction of the inner hinge portion.

The above-mentioned protrusion-preventing portion may include a longitudinal concave portion formed along the length thereof and having a concave shape on the inner surface of the outer hinge portion so that the fastening protrusion can enter therein.

The above cap attachment/detachment part may further include a projection left/right movement assistance part that assists left/right movement of the fastening projection from the longitudinal concave part while the outer hinge part rotates relative to the inner hinge part.

The above-mentioned protrusion left-right movement assistance part may include one or more pressing allowance holes formed around the fastening protrusion among the inner hinge parts and inducing pressing when pressure is applied to the fastening protrusion.

The one or more pressing allowance holes may include first and second pressing allowance holes around the fastening protrusion, and the first and second pressing allowance holes may be arranged above and below the fastening protrusion, respectively, and may be formed long in the circumferential direction of the inner hinge portion.

The above-mentioned protrusion left-right movement assistance part may further include an inclined surface formed at the end of the above-mentioned fastening protrusion and having an inclined shape with respect to the direction in which the outer hinge part rotates.

The grip body part may further include a lower spacer that supports the lower portion of the grip body and has a lower spacer through-hole for passing the shaft through; and an upper spacer that supports the upper portion of the grip body and has an upper spacer through-hole for passing the shaft through; and the fixing bracket may grip the upper portion of the upper spacer.

As described above, the shaft insertion type weight adjustment device for a golf club according to embodiments of the present invention and the cap detachable golf grip for insertion and withdrawal thereof can have the following effects.

According to one embodiment of the present invention, a golf club shaft insertion weight adjustment device for adjusting the weight of a shaft for a golf club is provided, which comprises a technical configuration including an upper fixing part, a lower fixing part, and a weight adjustment part, so that when the weight of the golf club shaft insertion weight adjustment device of the present invention is adjusted to a weight desired by a golfer through the weight adjustment part and the golf club shaft insertion weight adjustment device of the present invention is inserted into the shaft, the weight of the golf club (particularly a putter) can be adjusted by firmly and tightly fixing the golf club to the inside of the shaft without slipping through the upper fixing part and the lower fixing part, and thus the force applied to the ball during the pendulum movement of the golf club can be precisely adjusted through such weight adjustment.

In addition, according to one embodiment of the present invention, a technical configuration further including an upper connection unit and a lower connection unit is provided, so that the upper fixing part and the lower fixing part can be connected to the weight adjustment part through the screw fastening structure of the upper connection unit and the lower connection unit, so that even an ordinary person can easily disassemble it by tightening or loosening the screw fastening structure.

In addition, according to one embodiment of the present invention, since each of the upper fixing part and the lower fixing part provides a technical configuration including a fixing body and a radial extension of an elastic material, when an external force greater than the elastic force of the radial extension is applied by hand, the radial extension can enter the inner surface of the shaft, and when the hand is released, the radial extension can be restored to its original position and be tightly fixed to the inner surface of the shaft.

In addition, according to one embodiment of the present invention, the radial extension portion provides a technical configuration that extends longer than the inner radius of the shaft with respect to the center of the fixed body, so that the radial extension portion can maintain a strong fixing force on the inner surface of the shaft while being forcibly fitted into the inside of the shaft.

In addition, according to one embodiment of the present invention, the radial extension portion provides a technical configuration including a plurality of cut portions that are inserted in a centripetal direction at intervals, so that while the radial extension portion is inserted into the interior of the shaft, each joint can be bent independently of each other based on each cut portion, thereby allowing smooth insertion into the interior of the shaft.

In addition, according to one embodiment of the present invention, since a technical configuration further includes a shaft catch portion, when the shaft insertion type weight adjustment device for a golf club of the present invention is inserted into a shaft, the shaft catch portion provided on the upper end of the upper finishing member can be prevented from being caught on the upper end of the shaft and then completely entering the interior of the shaft later, so that when the shaft insertion type weight adjustment device for a golf club of the present invention is later withdrawn, the shaft catch portion can be easily withdrawn by pulling it by hand.

In addition, according to one embodiment of the present invention, the weight adjustment unit provides a technical configuration in which one or more weight members are screw-connected to each other along their length, so that the length of the weight adjustment unit can be lengthened or shortened until the golfer achieves the desired weight.

In addition, according to one embodiment of the present invention, the weight control unit provides a technology in which weight members of different weights are mixed and used, so that the position of the center of gravity of the weight control unit can be easily adjusted to a position desired by the golfer.

Meanwhile, according to another embodiment of the present invention, a cap-detachable golf grip used to insert and withdraw a shaft-insertable weight adjustment device for a golf club according to an embodiment of the present invention described above into the interior of a shaft is provided, which comprises a grip body, a cap, and a cap-detachable portion, so that even a person can attach and detach the cap to and from an end opening of the grip body through the cap-detachable portion, thereby easily inserting and withdrawing a shaft-insertable weight adjustment device for a golf club according to an embodiment of the present invention described above into the interior of a shaft.

In addition, according to an embodiment of the present invention, the cap attachment/detachment portion provides a technical configuration including a fastening projection and a fastening projection groove, so that the cap can be easily fastened to the grip body by fastening the fastening projection to the fastening projection groove.

In addition, according to an embodiment of the present invention, the cap attachment/detachment portion provides a technical configuration that further includes a rotation guide portion, so that the cap is not fastened by being fitted into the upper opening of the grip body portion in the longitudinal direction, but rather, the cap is rotated through the rotation guide portion after being fitted, and the fastening projection is fastened/detachable from the protrusion fastening groove, so that even if an external force in the longitudinal direction of the grip body portion is applied to the cap, the cap can be prevented from coming off in the longitudinal direction.

In addition, according to an embodiment of the present invention, the cap attachment/detachment portion provides a technical configuration that further includes a protrusion-catching prevention portion, so that the fastening protrusion can be prevented from catching on the outer hinge portion while the outer hinge portion is fitted into the inner hinge portion along its length, and ultimately, even a non-expert can easily fit the outer hinge portion into the inner hinge portion along its length.

In addition, according to an embodiment of the present invention, the cap attachment/detachment portion provides a technical configuration that further includes a projection left/right movement assistance portion, so that the left/right movement of the fastening projection can be smoothly assisted from the longitudinal concave portion while the outer hinge portion rotates relative to the inner hinge portion, so that even a non-expert can easily rotate the outer hinge portion relative to the inner hinge portion, and ultimately, the fastening projection can be attached/detached to the projection fastening groove while moving left/right.

FIG. 1 is a perspective view schematically illustrating a shaft insertion type weight adjustment device for a golf club according to one embodiment of the present invention.
Fig. 2 is a cross-sectional view schematically showing the shaft insertion type weight adjustment device for the golf club of Fig. 1.
Fig. 3 is a schematic drawing of the upper fixing part of the shaft insertion type weight adjustment device for a golf club of Fig. 1.
Fig. 4 is a cross-sectional view schematically showing a cap-detachable golf grip having a shaft-insertable weight adjustment device for a golf club of Fig. 1 inserted therein.
Figure 5 is a drawing of the golf grip of Figure 4 cut along the VV line.
Figure 6 is a schematic drawing showing a state in which the cap is rotated in Figure 5, and the fastening projection of the inner hinge part falls into the fastening projection groove of the outer hinge part and is placed in the longitudinal concave part.
Fig. 7 is an exploded perspective view showing the cap attachment/detachment part of the golf grip of Fig. 4.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein.

FIG. 1 is a perspective view schematically showing a shaft insertion type weight adjustment device for a golf club according to one embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view schematically showing the shaft insertion type weight adjustment device for a golf club of FIG. 1, and FIG. 3 is a drawing schematically showing an upper fixing part of the shaft insertion type weight adjustment device for a golf club of FIG. 1.

A shaft insertion weight adjustment device (100) for a golf club according to one embodiment of the present invention is a shaft insertion weight adjustment device for a golf club for adjusting the weight of a shaft (10) for a golf club, and as illustrated in FIGS. 1 to 3, includes an upper fixing part (110), a lower fixing part (120), and a weight adjustment part (130). Hereinafter, each component will be described in detail with continued reference to FIGS. 1 to 3.

The upper fixing member (110) is a component for fixing the upper portion of the shaft insertion type weight adjustment device (100) for a golf club of the present invention to the inner surface of the shaft (10) (see FIG. 4). This upper fixing member (110) can be connected to the upper end of the weight adjustment member (130), as illustrated in FIGS. 1 and 2, and can be fixed in close contact with the inner surface of the shaft (10).

The lower fixing member (120) is a component for fixing the lower portion of the shaft insertion type weight adjustment device (100) for a golf club of the present invention to the inner surface of the shaft (10) (see FIG. 4). This lower fixing member (120) can be connected to the lower end of the weight adjustment member (130), as illustrated in FIGS. 1 and 2, and can be fixed in close contact with the inner surface of the shaft (10).

The weight adjustment unit (130) is a component inserted into the interior of the shaft (10) to substantially adjust the weight of the shaft (10) (see FIG. 4). As shown in FIGS. 1 and 2, this weight adjustment unit (130) can connect between the upper fixing unit (110) and the lower fixing unit (120) and adjust the weight thereof.

Accordingly, since such components are provided, when the weight of the shaft insertion type weight adjustment device (100) for a golf club of the present invention is adjusted to a weight desired by the golfer through the weight adjustment unit (130), and the shaft insertion type weight adjustment device (100) for a golf club of the present invention is inserted into the interior of the shaft (10), the weight of the golf club (particularly the putter) can be adjusted by firmly and tightly fixing the interior of the shaft (10) without slipping through the upper fixing unit (110) and the lower fixing unit (120), and thus the force applied to the ball during the pendulum movement of the golf club can be precisely adjusted through such weight adjustment.

In addition, the shaft insertion type weight adjustment device (100) for a golf club according to one embodiment of the present invention may further include an upper connection unit (140) and a lower connection unit (150), as illustrated in FIG. 2. The upper connection unit (140) may connect the upper fixing part (110) to a male screw part (M10) formed at the upper portion of the weight adjustment part (130), and the lower connection unit (150) may connect the lower fixing part (120) to a female screw part (W10) formed at the lower portion of the weight adjustment part (130). Therefore, the upper fixing part (110) and the lower fixing part (120) can be connected to the weight adjustment part (130) through the screw fastening structure of the upper connection unit (140) and the lower connection unit (150), so that even an ordinary person can easily disassemble it by tightening or loosening the screw fastening structure.

Specifically, the upper connecting unit (140) may include an upper closing member (141), a screw fastening groove (142), and an upper through hole (143), as illustrated in FIG. 2. The upper closing member (141) may close the upper portion of a shaft insertion type weight adjusting device (100) for a golf club according to one embodiment of the present invention. The screw fastening groove (142) may be formed at the lower portion of the upper closing member (141), and a male screw portion (M10) of a weight adjusting member (130) may be fastened thereto. The upper through hole (143) may be formed to penetrate the upper fixing member (110), and a male screw portion (M10) of a weight adjusting member (130) may be penetrated thereto. Accordingly, the upper fixing part (110) can be connected to the upper part of the weight adjusting part (130) by the screw part (M10) of the weight adjusting part (130) passing through the upper through hole (143) and being fastened to the screw fastening groove (142).

In addition, the lower connecting unit (150) may include a lower through hole (151) and a fastening bolt (152), as illustrated in FIG. 2. The lower through hole (151) may be formed to penetrate the lower fixing member (120). The fastening bolt (152) may be fastened to the female screw portion (W10) of the weight adjusting member (130) by penetrating the lower through hole (151). Accordingly, the lower fixing member (120) may be connected to the lower portion of the weight adjusting member (130) by fastening the fastening bolt (152).

Hereinafter, referring again to FIGS. 1 to 3, the upper fixing part (110) and the lower fixing part (120) will be described in more detail.

Each of the upper fixing part (110) and the lower fixing part (120) may include a fixing body (F10) and a radial extension part (F20), as illustrated in FIG. 3. The fixing body (F10) may have a ring shape. The radial extension part (F20) may be made of an elastic material such as a metal plate, and may be provided on the entire circumference of the fixing body (F10) so as to extend in the radial direction, and may contact the inner surface of the shaft (10). Therefore, when an external force greater than the elastic force of the radial extension part (F20) is applied by hand, the radial extension part (F20) may enter the inner surface of the shaft (10), and when the hand is released, the radial extension part (F20) may return to its original position and be fixed in close contact with the inner surface of the shaft (10).

In particular, the radial extension (F20) may extend slightly longer than the inner radius of the shaft (10) based on the center of the fixed body (F10). Therefore, the radial extension (F20) may be forcibly fitted into the inner surface of the shaft (10) to maintain a strong fixing force on the inner surface of the shaft (10).

Furthermore, the radial extension (F20) may include a plurality of cutouts (F21), as illustrated in FIG. 3. Each cutout (F21) may be formed to be recessed in the center of the fixed body (F10) at intervals so as to allow smooth insertion while being inserted into the interior of the shaft (10). Accordingly, while the radial extension (F20) is inserted into the interior of the shaft (10), each joint may be independently bent with respect to each cutout (F21), thereby allowing smooth insertion into the interior of the shaft (10).

In addition, the shaft insertion type weight adjustment device (100) for a golf club according to one embodiment of the present invention may further include a shaft catch (160) as illustrated in FIGS. 1 and 2. The shaft catch (160) may be provided at the upper end of the upper finishing member (141) and may have a size larger than the inner diameter of the shaft (see 10 in FIG. 4). Therefore, when the shaft insertion type weight adjustment device (100) for a golf club of the present invention is inserted into the shaft (10), the shaft catch (160) provided at the upper end of the upper finishing member (141) may be prevented from being completely inserted into the interior of the shaft (10) while being caught at the upper end of the shaft (10), so that when the shaft insertion type weight adjustment device (100) for a golf club of the present invention is to be withdrawn later, the shaft catch (160) exposed to the outside may be easily withdrawn by pulling it by hand.

Hereinafter, referring again to FIG. 2, the weight control unit (130) will be described in more detail.

The weight adjustment unit (130) may include a first weight member (131), a first female screw member (W11), and a first male screw member (M11). The first weight member (131) may have a first weight (e.g., 10 g) and may be formed in an elongated shape. One or more first weight members (131) may be provided. Accordingly, a plurality of first weight members (131) may be connected until a desired weight is achieved by the golfer, thereby lengthening or shortening the length of the weight adjustment unit.

Furthermore, the weight adjustment unit (130) may include a second weight member (132), a second female screw member (W12), and a second male screw member (M12). The second weight member (132) may have a second weight (e.g., 5 g) and may be formed in an elongated shape. One or more second weight members (132) may be provided. Accordingly, a plurality of second weight members (132) may be connected until a desired weight is achieved by the golfer, thereby lengthening or shortening the length of the weight adjustment unit (130).

For example, when there are multiple first weight members (131), the first weight members (131) may be connected to each other to form a long bar shape. In another example, when there are multiple second weight members (132), the second weight members (132) may be connected to each other to form a long bar shape. In yet another example, one or more first weight members (131) and one or more second weight members (132) may be mixed and connected to each other to form a long bar shape. In particular, when first weight members (131) and second weight members (132) of different weights are mixed and used, the position of the center of gravity of the weight adjustment unit (130) can be more easily adjusted to a position desired by the golfer.

Hereinafter, with reference to FIGS. 4 to 7, a cap-detachable golf grip according to another embodiment of the present invention will be described in detail.

Fig. 4 is a cross-sectional view schematically showing a cap-detachable golf grip having a shaft insertion weight adjustment device for a golf club of Fig. 1 inserted therein, Fig. 5 is a view taken along line V-V of the golf grip of Fig. 4, and Fig. 6 is a view schematically showing a state in which the cap is rotated in Fig. 5 so that the fastening protrusion of the inner hinge part falls into the fastening groove of the fastening protrusion of the outer hinge part and is then placed in a longitudinal concave part. Fig. 7 is an exploded perspective view showing the cap-detachable part of the golf grip of Fig. 4 disassembled.

A cap-detachable golf grip (200) according to another embodiment of the present invention is a cap-detachable golf grip used to insert and withdraw a shaft-insertable weight adjustment device (100) for a golf club according to an embodiment of the present invention described above into and into the interior of a shaft (10), as illustrated in FIG. 4, and includes a grip body (210), a cap (220), and a cap attachment/detachment portion (230). Hereinafter, each component will be described in detail with continued reference to FIGS. 4 to 7.

The grip body (210) is a component forming the main body of the cap-mountable golf grip (200) of the present invention, as illustrated in FIG. 4. This grip body (210) may include a hollow grip body (211) with both ends open, as illustrated in FIG. 4, and may be fitted to the opposite end of the head (i.e., the upper end of the shaft) of the shaft (10) to wrap around the shaft (10), thereby providing a gripping feeling to the golfer's hand when the golfer holds the club.

The cap (220) is a component that blocks the upper opening of the grip body (210), as illustrated in FIG. 4. The cap (220), as illustrated in FIG. 4, can be detachably attached to the grip body (210) through a cap attachment/detachment portion (230).

The cap attachment/detachment part (230) is a component for attaching/detaching the cap (220) to the grip body part (210). A more detailed description thereof will be provided later.

Accordingly, since such components are provided, even a person can attach or detach the cap (220) to the terminal opening of the grip body (210) through the cap attachment/detachment portion (230), thereby easily inserting or removing the shaft insertion type weight adjustment device (100) for a golf club according to an embodiment of the present invention described above into the shaft (10).

Hereinafter, referring again to FIGS. 4 to 7, the cap attachment/detachment part (230) will be described in more detail.

The cap attachment/detachment portion (230) may include a fastening protrusion (231) and a fastening groove (232), as illustrated in FIG. 4. The fastening protrusion (231) may be provided on the grip body portion (210) [particularly, the fixed bracket (233a)], and the fastening groove (232) may be formed on the cap (220) to be attached/detached to the fastening protrusion (231). Therefore, the cap (220) may be easily fastened to the grip body portion (210) by fastening the fastening protrusion (231) to the fastening groove (232). Although not illustrated, the fastening protrusion may be provided on the cap, and the fastening groove may be formed on the grip body portion.

Furthermore, the cap attachment/detachment part (230) may further include a rotation guide part (233) as illustrated in FIGS. 5 and 6. The rotation guide part (233) may allow the fastening projection (231) to be detachably fastened to the protrusion fastening groove (232) as the cap (220) rotates. Accordingly, the cap (220) is not fastened by being fitted into the upper opening of the grip body part (210) in the longitudinal direction, but rather, the fastening projection (231) is attached/detached to the protrusion fastening groove (232) as the cap (220) is rotated through the rotation guide part (233) after being fitted. Therefore, even if an external force in the longitudinal direction of the grip body part (211) is applied to the cap (220), the cap (220) can be prevented from coming off in the longitudinal direction.

Specifically, the rotation guide (233) may include a fixed bracket (233a), an inner hinge portion (233b), and an outer hinge portion (233c), as illustrated in FIGS. 4 to 6. The fixed bracket (233a) may be provided on the inner surface of the grip body (211) and may have a bracket through-hole (P33) for passing the shaft (10). The inner hinge portion (233b) may protrude upward in the longitudinal direction from the center of the fixed bracket (233a), may have a cylindrical shape, and may be provided with the above-described fastening protrusion (231). The outer hinge portion (233c) may be provided to protrude downward on the bottom surface of the cap (220), may have a cylindrical shape to rotatably surround the inner hinge portion (233b), and may have a protrusion fastening groove (232) to be fastened to the fastening protrusion (231) while the cap (220) is rotated.

In addition, the cap attachment/detachment part (230) may further include a protrusion catch prevention part (234) as illustrated in FIG. 6. The protrusion catch prevention part (234) may serve to prevent the fastening protrusion (231) from being caught on the outer hinge part (233c) while the outer hinge part (233c) is fitted to the inner hinge part (233b) along its length direction. Accordingly, the fastening protrusion (231) can be prevented from being caught on the outer hinge part (233c) while the outer hinge part (233c) is fitted to the inner hinge part (233b) along its length direction, and ultimately, even a non-expert can easily fit the outer hinge part (233c) to the inner hinge part (233b) along its length direction.

For example, the protrusion catch prevention portion (234) may include a longitudinal concave portion (234a) as illustrated in Fig. 6. The longitudinal concave portion (234a) may have a concave shape so that a fastening protrusion (231) may be inserted into the inner surface of the outer hinge portion (233c) and may be formed to extend along the longitudinal direction of the outer hinge portion (233c).

In addition, the cap attachment/detachment part (230) may further include a projection left/right movement assist part (235) as illustrated in Fig. 7. The projection left/right movement assist part (235) may smoothly assist the left/right movement of the fastening projection (231) from the longitudinal concave part (234a) while the outer hinge part (233c) rotates relative to the inner hinge part (233b). Accordingly, while the outer hinge portion (233c) is rotated relative to the inner hinge portion (233b), the fastening protrusion (231) can come out from the longitudinal concave portion (234a) with the help of the protrusion left-right movement assist portion (235), so that even a non-expert can easily rotate the outer hinge portion (233c) relative to the inner hinge portion (233b), and ultimately, the fastening protrusion (231) can be attached to and detached from the protrusion fastening groove (232) while being moved left-right.

For example, the protrusion left-right movement assistance part (235) may include one or more pressing allowance holes (235a) as illustrated in Fig. 7. The pressing allowance hole (235a) may be formed around the fastening protrusion (231) among the inner hinge parts (233b) and may allow pressing when pressure is applied to the fastening protrusion (231).

In particular, one or more pressing allowance holes (235a) may include first and second pressing allowance holes (235a1) (235a2) around the fastening protrusion (231), as illustrated in FIG. 7. The first and second pressing allowance holes (235a1) (235a2) may be arranged above and below the fastening protrusion (231), respectively, and may be formed to be long in the circumferential direction of the inner hinge portion (233b). Therefore, when pressing pressure is applied to the fastening protrusion (231), the fastening protrusion (231) may be pressed more smoothly through the first and second pressing allowance holes (235a1) (235a2).

Furthermore, the protrusion left-right movement assistance member (235) may further include an inclined surface (235b) as illustrated in FIG. 5. The inclined surface (235b) may be formed at the end of the fastening protrusion (231) and may have an inclined shape with respect to the direction in which the outer hinge portion (233c) rotates left and right. Accordingly, the fastening protrusion (231) may smoothly pass over the inclined surface (235b) while passing over the left and right protrusions of the longitudinal concave portion (234a).

Hereinafter, referring again to FIG. 4, the grip body part (210) will be described in more detail.

The grip body (210) may include a grip body (211), a lower spacer (212), and an upper spacer (213), as illustrated in FIG. 4. The grip body (211) may have a hollow shape with both ends open and may be made of a metal material such as a magnesium alloy. The lower spacer (212) may be made of a material such as polyurethane, may support the lower end of the grip body (211), and may have a lower spacer through-hole (212a) for passing a shaft (10). The upper spacer (213) may be made of a material such as polyurethane, may support the upper end of the grip body (211), and may have an upper spacer through-hole (213a) for passing a shaft (10). Accordingly, a sufficient empty space (S10) can be formed between the outer surface of the shaft (10) and the inner surface of the grip body (211) through the lower spacer (212) and the upper spacer (213), so that the volume occupied by the grip body (210) in the golf grip (200) of the present invention can be reduced by the empty space (S10), and ultimately, the overall weight of the golf grip (200) of the present invention can be reduced.

Furthermore, referring back to FIG. 4, the upper end of the upper spacer (213) may be held by a fixing bracket (233a), and a guide rib (215) may be formed on the inner surface of the grip body (211). Accordingly, the upper spacer (213), etc., may be accurately positioned on the inner surface of the grip body (211) as the fixing bracket (233a) is caught on the guide rib (215). In addition, referring still to FIG. 4, a grip improvement material (216), such as silicone, may be thinly coated on the outer surface of the grip body (211).

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements made by those skilled in the art using the basic concept of the present invention defined in the following claims also fall within the scope of the present invention.

10: Shaft
100: Shaft insert weight adjustment device for golf clubs
110: Upper fixing part 120: Lower fixing part
F10: Fixed body F20: Radial extension
F21: Incision 130: Weight adjustment section
131: First weight member 132: Second weight member
M10: Male thread M11: First male thread
M12: 2nd male thread W10: Female thread
W11: 1st female thread W12: 2nd female thread
140: Upper connecting unit 141: Upper finishing member
142: Screw fastening hole 143: Upper through hole
150: Lower connecting unit 151: Lower through hole
152: Fastening bolt 160: Shaft catch
200: Detachable cap golf grip
210: Grip body 211: Grip body
212: Lower spacer 212a: Lower spacer through hole
213: Upper spacer 213a: Upper spacer through hole
215: Guide rib 216: Absence of grip improvement
220: Cap 230: Cap detachable part
231: Fastening protrusion 232: Fastening groove
233: Rotating guide 233a: Fixed bracket
P33: Bracket through hole 233b: Inner hinge part
233c: Outer hinge part 234: Anti-protrusion catch part
234a: longitudinal concave portion 235: protrusion left-right movement auxiliary portion
235a: One or more pressure-allowing holes 235a1: First pressure-allowing hole
235a2: Second press allowance

Claims (3)

delete delete A golf club shaft insert weight adjustment device for adjusting the weight of a golf club shaft.
An upper fixing member for fixing to the inner surface of the above shaft;
A lower fixing part for fixing to the inner surface of the above shaft; and
A weight adjustment unit that connects the upper fixing unit and the lower fixing unit and adjusts the weight;
Including,
The above weight control unit,
One or more first weight members having a first weight and having an elongated shape;
A first female screw portion formed at the lower portion of the first weight member;
A first screw portion provided on the upper portion of the first weight member;
One or more second weight members having an elongated shape having a second weight;
A second female screw portion formed at the lower portion of the second weight member; and
A second screw portion provided on the upper portion of the second weight member;
Including,
The one or more first weight members and the one or more second weight members,
The female and male screws are mixed and connected to each other to form a long bar shape.
A cap-removable golf grip used to insert and withdraw a shaft-insertable weight adjustment device for a golf club into the interior of the shaft,
A grip body portion having a hollow shape with both ends open and including a grip body that surrounds the shaft;
A cap blocking the terminal opening of the grip body; and
A cap attachment/detachment part for attaching/detaching the cap to the grip body;
Including,
The above cap detachable part is,
A fastening projection provided on either the grip body or the cap;
A projection fastening groove formed on the other one of the grip body and the cap so as to be attached to and detached from the above fastening projection; and
A rotation guide so that the fastening projection is detachably fastened to the fastening groove as the cap rotates;
Including,
The above rotation guide part,
A fixed bracket provided on the inner surface of the grip body and having a bracket through-hole for passing the shaft through;
An inner hinge portion having a cylindrical shape and protruding upward in the longitudinal direction at the center of the above-mentioned fixed bracket and having the above-mentioned fastening projection; and
An outer hinge portion having a cylindrical shape and protruding downwardly on the bottom surface of the cap, rotatably surrounding the inner hinge portion, and having a protrusion fastening groove formed therein so as to be fastened to the fastening protrusion while rotating;
Including
A golf grip with a removable cap for inserting and withdrawing a shaft-insertable weight adjustment device for a golf club.