JPH0646760U - Golf club - Google Patents

Abstract

(57) [Summary] [Purpose] To ensure a sufficient flight distance only when the golf ball is hit accurately at the sweet spot. [Structure] The club shaft 2 includes a front end shaft portion 2a on the club head 3 side and a base end shaft portion 2 on the grip 4 side.
Split into b and. Both shaft portions 2a and 2b are connected by a rotating means 5. The rotating means 5 allows the club head 3 to rotate together with the distal end shaft portion 2a with respect to the proximal end shaft portion 2b by a certain amount. Therefore, if the golf ball does not hit the sweet spot, the club head 3 rotates and the flight distance becomes extremely short.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a golf club, and more particularly to a golf club suitable for practicing a golf swing.

[0002]

[Prior art]

 Generally, when practicing a golf shot, whether the golf ball is caught at the sweet spot on the club face, or whether the club face is oriented at a right angle to the target of the golf ball at impact. In addition, it is customary to check whether or not the golf ball is being captured at a face angle that provides the ideal flight climb angle of the golf ball.

However, in a normal golf club, even if the relative hitting positional relationship of the club face with respect to the golf club is not optimum, the golf ball will fly, so the swing hitting method of one's best shot will be accurate. There is a problem that it is not easy to grasp.

Therefore, in some cases, as disclosed in, for example, Japanese Utility Model Publication No. 60-13496, there is a golf club in which the club shaft is bent only in the swing direction and the golf ball flies only at the best shot. Proposed.

[0005]

[Problems to be solved by the device]

 However, in this type of golf club, the club head side freely swings and bends, so the club head side bends during the backswing, and the club shaft does not become straight when swinging as it is There is a problem.

Therefore, in some cases, as disclosed in, for example, Japanese Patent Application Laid-Open No. 1-288282, the bent portion of the club shaft is temporarily fixed with a weak force, and when the back swing is correct, the club shaft is bent. Golf clubs that have been left out have also been proposed.

However, in the case of amateurs, very few people can rotate both shoulders, both arms, the club shaft, and the club head as a unit, instead of swinging their arms when moving from address to takeback. However, if this is not possible, the club shaft will bend, and in that sense, it is ideal for practicing golf swings, but it is embarrassing and unusable at a golf practice range where people are watching, resulting in sufficient results. There is a problem that you cannot get it.

The present invention has been made in view of the current situation, and an object of the present invention is to provide a golf club that can be practiced without being too embarrassed even under the eyes of the general public, and that can achieve sufficient practice results. And

[0009]

[Means for Solving the Problems]

 The present invention provides, as means for achieving the above object, a club shaft; a club head provided on one end side of the club shaft; a grip provided on the other end side of the club shaft; And a rotation means capable of rotating at least a fixed amount about an axis substantially parallel to the club shaft.

In the present invention, it is preferable that the rotating means is provided at at least one of the club shaft, the club head, the grip, and the connecting portion thereof.

Further, the rotating means may be provided with a temporary fixing mechanism for temporarily fixing the club head to the regular position with a weak force, or with a returning mechanism for automatically returning the misaligned club head to the regular position. It is more preferable to provide a fixing mechanism for fixing the club head in the regular position.

[0012]

[Action]

 In the golf club according to the present invention, the club head is rotatable at least by a certain amount about an axis substantially parallel to the club shaft.

By the way, when a golf ball is hit on the toe side or the heel side of the club face, the rotational moment in the direction in which the face opens or closes acts on the club head, for example, in the document “Golf Handbook”, Vivian.・ Thorn Dars, translated by Genji Omura, Soni Magazines, Inc., p. 19 issued Nov. 20, 1991.

Here, when a golfer with strong gripping force swings, even if a rotational moment acts on the club head, the face hardly opens or closes, so the golf ball is accurately captured at the sweet spot. It is extremely difficult to determine whether or not

However, in the case of the present invention, when a rotational moment acts on the club head, the club head itself rotates at least a certain amount. Therefore, unless the golf ball is accurately caught at the sweet spot, the flight distance of the ball is It becomes extremely low and it is immediately understood that the golf ball is not caught in the sweet spot, and it is possible to obtain sufficient practice results.

Further, unlike a conventional golf practice club, even in the case of a bad backswing, the club head rotates, but the club shaft does not bend, and even under the view of the crowd. However, without being too embarrassed, it is possible to practice sufficiently, and by rotating the club head, it becomes possible to easily confirm and correct the defect of one's own backswing.

In the present invention, the rotating means is provided at at least one of the club shaft, the club head, the grip, or the connecting portion thereof, so that the type of golf club It is possible to select the optimum installation position.

Further, by providing the rotating means with a temporary fixing mechanism for temporarily fixing the club head to the regular position with a weak force, the club head can be rotated even when the swing is quite fast as long as the swing is correct. It is possible to practice more practically.

Further, by providing the rotating means with a returning mechanism for automatically returning the misaligned club head to the regular position, the operation of returning the club head to the regular position is unnecessary, and the practice is the same as for a normal golf club. It becomes possible to do it.

Further, by providing the rotating means with a fixing mechanism for fixing the club head to the regular position, it becomes possible to use it for playing on the course.

[0021]

【Example】

 Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 shows a golf club according to a first embodiment of the present invention. The golf club 1 includes a club shaft 2, a club head 3 fixed to the tip of the club shaft 2, and a base of the club shaft 2. A grip 4 attached to an end of the club shaft 2 is provided at a portion of the club shaft 2 near the club head 3 for rotating the club head 3 around the axis of the club shaft 2 by a predetermined amount. Is assembled. That is, as shown in FIG. 1, the club shaft 2 is divided into a front end shaft portion 2a on the club head 3 side and a base end shaft portion 2b on the grip 4 side, and the rotating means 5 includes both shaft portions 2a. , 2b to connect the shaft portions 2a, 2b.

As shown in FIGS. 2 and 3, the rotating means 5 includes a guide member 6, an operating member 7, a returning member 8, a holding member 9 and a protective cylinder 10, and the guide member 6 and the operating member. A spring 11 is interposed between the spring 7 and the spring 7. Then, a temporary fixing mechanism for temporarily fixing the club head 3 to the regular position with a weak force by the operating member 6, the returning member 8 and the spring 11, and a returning mechanism for automatically returning the misaligned club head 3 to the regular position. Are configured.

As shown in FIGS. 2 and 3, the guide member 6 includes a press-fitting fixing portion 12 having a male screw portion 12a on the outer peripheral portion of the lower end and a proximal shaft portion 2b being press-fitted and fixed, and a radial gap. It is composed of a round bar-shaped rotation stopping portion 13 having a rit 13a, and the upper end portion of the protective cylinder 10 is screwed and connected to the male portion 12a.

As shown in FIGS. 2 and 3, the actuating member 7 includes a slide guide portion 14 slidably fitted in the slit 13a in a non-rotating state, and a V-groove-like engaging groove at a lower end thereof. The slide guide portion 14 is provided with a spring receiver 14a into which the spring 11 is inserted.

As shown in FIGS. 2 and 3, the return member 8 has a locking portion 16 having a locking projection 16a having a triangular cross section that engages with the engaging groove 15a, and the tip shutter. The return member 8 is rotated around the axis of the club shaft 2 together with the tip shaft portion 2a, that is, the club head 3 so as to rotate the operating member 7 together. It is designed to push up. The sliding amount of the actuating member 7 is regulated by the gap G 1 between the anti-rotation portion 13 and the engaging portion 15, and as a result, the rotation amount of the club head 3 is regulated to about 30 degrees. Has become.

Further, as shown in FIG. 2, the holding member 9 is formed in a cylindrical shape having a male screw portion 9a on the outer periphery of the upper end, and the holding member 9 is rotated and slid on the tip shaft portion 2a. It is freely attached, and is prevented from coming off from the tip shaft portion 2a by abutting on the locking portion 16. Then, by connecting the lower end portion of the protective cylinder 10 to the male screw portion 9a of the holding member 9 by screwing, both shaft portions 2a and 2b are connected via the rotating means 5.

Next, the operation of this embodiment will be described. When practicing a golf swing using the golf club 1, if the golf ball is hit on the toe side or the heel side of the club face, a rotational moment in the direction in which the face opens or the face closes is applied to the club head 3. Will work.

When the rotational moment acts on the club head 3 as described above, the tip shaft portion 2 a rotates about the axis, and the return member 8 integrated with the tip shaft portion 2 a also rotates about the axis. become. Then, the actuating member 7 is pushed upward by this.

When the club head 3, that is, the return member 8 is rotated by about 30 degrees, the gap G between the detent portion 13 and the engaging portion 15 becomes zero, and the club head 3 does not rotate any more. Then, when the golf club 1 is returned to the original position for the next swing, the actuating member 7 is pressed downward by the urging force of the subring 11, and this force returns the club head 3 to the normal position.

On the other hand, when a bad back swing such as swinging up the arm is performed when moving from the address to the take-back, in this case also, a rotational moment is applied to the club head 3 and the club head 3 moves. The state is shifted from the normal position. Then, the vibration at that time is transmitted to the grip 4 via the shaft 2. Therefore, the practitioner can easily know that the club head 3 is displaced.

However, when the golf ball is not caught at the sweet spot on the club face and when a bad backswing is performed, the club head 3 moves around the axis of the club shaft 2 by the operation of the rotating means 5. Since it rotates a certain amount, it is possible to immediately know its own defects and immediately correct them. Therefore, sufficient training results can be obtained in a short time. Also, unlike the conventional club shaft 2 in which the club shaft 2 bends, the club shaft 2 itself does not bend, so that you can practice without being too embarrassed even under the eyes of the crowd.

Further, the club head 3 which has been displaced is automatically returned to the regular position by the operation of the rotating means 5, so that the practice can be continued as it is.

FIG. 4 shows a second embodiment of the present invention, in which a rotating means 25 is used instead of the rotating means 5 in the first embodiment.

That is, as shown in FIG. 4, the rotating means 25 is provided with a guide member 26, an operating member 27, a returning member 28 and a protective tube 29, and the guide member 26 and the operating member 27 are connected to each other. A spring 30 that presses and urges the actuating member 27 toward the return member 28 is interposed therebetween. Then, a temporary fixing mechanism for temporarily fixing the club head 3 (see FIG. 1) to the regular position with a weak force by the operating member 27, the returning member 28, and the spring 30, and automatically returning the misaligned club head 3 to the regular position. And a return mechanism for making it.

As shown in FIG. 4, the guide member 26 includes a press-fitting fixing portion 31 having a male screw portion 31a on a lower end outer peripheral portion and a base end shaft portion 2b being press-fitted and fixed, and a spring 30 mounted on the outer peripheral portion. And a stopper portion 32 in the shape of a round bar. The upper end portion of the protective cylinder 29 is screwed and connected to the male screw portion 31a.

As shown in FIG. 4, the actuating member 27 includes a cylindrical engaging portion 33 having a V-shaped engaging slope 33a at the lower end, and a fixed shaft press-fitted and fixed to the tip shaft 2a. The actuating member 27, together with the distal end shaft portion 2a, is rotated around the axis of the club shaft 2 and is pushed upward by a returning member 28, which will be described later. There is. The upward movement amount of the operating member 27 is regulated by the gap G between the engagement portion 33 and the stopper portion 32, and as a result, the rotation amount of the tip shaft portion 2a is regulated to about 30 degrees. It has become so.

As shown in FIG. 4, the return member 28 has a tubular locking portion 35 having a V-groove shaped locking groove 35a at the upper end and a male screw portion 35b at the outer peripheral portion, and a tip shaft. A support portion 36 that supports the portion 2a in a rotatable and slidable manner, and the lower end portion of the protective cylinder 29 is screwed and connected to the male screw portion 35b. In other respects, the configuration is the same as that of the first embodiment and the operation is the same.

Therefore, even if the rotating means 25 is used, the same effect as that of the first embodiment can be expected, and the number of parts can be eliminated.

FIGS. 5 and 6 show a third embodiment of the present invention, in which a rotating means 45 is used instead of the rotating means 5 in the first embodiment.

That is, as shown in FIGS. 5 and 6, the rotating means 45 is provided with a guide member 46, a returning member 47, a holding member 48 and a protective cylinder 49, and the guide member 46 and the returning member 46. A spring 50 is interposed between the member 47 and the member 47. The returning member 47 and the spring 50 constitute a temporary fixing mechanism for temporarily fixing the club head 3 (see FIG. 1) to the regular position with a weak force, and a returning mechanism for automatically returning the misaligned club head to the regular position. is doing.

As shown in FIGS. 5 and 6, the guide member 46 is formed in a bottomed cylindrical shape having a male screw portion 46 a on the outer periphery of the lower end, and the guide member 46 has a proximal shaft portion. 2b is press-fitted. The male screw portion 46a is screwed to the upper end of the protective cylinder 49.

As shown in FIGS. 5 and 6, a detent piece 51 composed of two parallel projecting pieces is provided on the lower end surface of the guide member 46. The upper end locking portion 50a of the spring 50 is fitted and locked, and the guide member 46 and the spring 50 are connected in the rotational direction.

On the other hand, as shown in FIGS. 5 and 6, the returning member 47 is formed in the shape of a round bar having a large-diameter disk-shaped head 47a at the upper end, and the returning member 47 has a tip end. It is adapted to be press-fitted and fixed to the shaft portion 2a.

As shown in FIGS. 5 and 6, an anti-rotation piece 52 composed of two parallel protruding pieces is provided on the upper end surface of the head portion 47 a. The lower end locking portion 50b of the spring 50 is fitted and locked, and the return member 47 and the spring 50 are connected in the rotational direction.

Further, as shown in FIGS. 5 and 6, the holding member 48 is formed in a cylindrical shape having a male portion 48a on the outer periphery of the upper end, and the holding member 48 has a tip shaft portion. It is rotatably and slidably mounted on 2a, and is screwed and connected to the lower end of the protective cylinder 49 via the male screw portion 48a. In other respects, the configuration is the same as that of the first embodiment and the operation is the same.

Therefore, even if the rotating means 45 is used, the same effect as that of the first embodiment can be expected, and the structure can be further simplified.

FIG. 7 shows a fourth embodiment of the present invention, in which a rotating means 65 is used instead of the rotating means 5 in the first embodiment.

That is, as shown in FIG. 7, the rotating means 65 includes a guide member 66, an operating member 67, and a holding member 68. The guide member 66 includes the club head 3 (see FIG. 1). ) Is temporarily incorporated in the regular position with a weak force, and a fixing mechanism 70 for completely fixing the club head 3 in the regular position is incorporated.

As shown in FIG. 7, the guide member 66 is composed of a cylindrical main body portion 71 and a fixed shaft portion 72 that is press-fitted and fixed to the base end shaft portion 2b. 1 is provided with a round hole-shaped accommodating portion 71a in which an actuating member 67 described later is rotatably arranged and a female screw portion 71b in which a holding member 68 is screwed and connected.

As shown in FIG. 7, the operating member 67 includes a disc-shaped main body 73 rotatably accommodated in the accommodating portion 71a, and a fixed shaft portion press-fitted and fixed to the distal shaft portion 2a. The main body 73 is provided with a positioning recess 73a corresponding to a temporary fixing mechanism 69 and a fixing recess 73b corresponding to the fixing mechanism 70 on the outer peripheral surface thereof.

Further, as shown in FIG. 7, the holding member 68 is formed in a cylindrical shape having a male screw portion 68a on the outer periphery of the upper end, and the holding member 68 is rotatably mounted on the tip shaft portion 2a. At the same time, it is screwed and connected to the main body 71 via the male screw portion 68a.

On the other hand, as shown in FIG. 7, the temporary fixing mechanism 69 includes a steel ball 75, a pressing spring 76, and a set screw 77, and the steel ball 75 serves as the club head 3 (see FIG. 1) is in the regular position, the club head 3 can be temporarily fixed to the regular position with a weak force by being fitted and locked in the positioning recess 73a.

Further, as shown in FIG. 7, the fixing mechanism 70 is composed of a bolt 78 screwed to the main body 71, and this bolt 78 is used when the club head 3 is in the normal position. It can be screwed into the fixed recess 73b. As a result, the club head 3 is completely fixed at the regular position, and the golf club 1 (see FIG. 1) can be used for playing on the course. In other respects, the configuration is the same as that of the first embodiment and the operation is the same.

Since the rotating means 65 does not have a returning mechanism for automatically returning the misaligned club head 3 to the normal position, the user can return the club head 3 to the normal position. Although it must be done manually, in other respects, the same effect as that of the first embodiment can be expected. Further, since it has the fixing mechanism 70, it can be used for playing on the course.

FIG. 8 shows a fifth embodiment of the present invention, in which the rotating means 85 obtained by partially changing the rotating means 65 in the fourth embodiment is used.

That is, in the rotating means 85, as shown in FIG. 8, a positioning recess 73a and a fixing recess 73b are provided on the upper end surface of the main body 73, respectively. The mechanism 69 and the fixing mechanism 70 are incorporated in the upper end of the main body 71. In other respects, the structure is the same as that of the fourth embodiment and the operation is the same.

Therefore, even if the rotating means 85 is used, the same effect as that of the fourth embodiment can be expected, and the diameter of the guide member 66 can be reduced.

FIG. 9 shows a sixth embodiment of the present invention, in which a rotating means 95 is used instead of the rotating means 5 in the first embodiment.

That is, as shown in FIG. 9, the rotating means 95 includes a guide member 96, an operating member 97, a holding member 98, and a protective cylinder 99, and the operating member 97 and the protective cylinder 99 are connected to each other. A lantern spring 100 is interposed between them. The actuating member 97, the protective cylinder 99, and the lantern spring 100 constitute a temporary fixing mechanism for temporarily fixing the club head 3 (see FIG. 1) to the regular position with a weak force.

As shown in FIG. 9, the guide member 96 is formed in a bottomed cylindrical shape having a male screw portion 96 a on the outer periphery of the lower end, and the guide member 96 has a proximal end shaft portion 2 b. It is press-fitted and fixed, and the upper end portion of the protective cylinder 99 is screwed and connected to the male screw portion 96a.

As shown in FIG. 9, the actuating member 97 is composed of a round bar-shaped spring mounting portion 97a, a flange portion 97b, and a fixed shaft portion 97c that is press-fitted and fixed to the distal shaft portion 2a. A lantern spring 100 described later is wound around the spring mounting portion 97a and is fixed by spot welding or the like.

Further, as shown in FIG. 9, the holding member 98 is formed in a cylindrical shape having a male screw portion 98a on the outer periphery of the upper end, and the holding member 98 is rotatably attached to the tip shaft portion 2a. At the same time, it is screwed and connected to the lower end portion of the protective cylinder 99 via the male screw portion 98a.

On the other hand, the lantern spring 100 is formed in the shape of a lantern by slitting a leaf spring to bend the slits and winding the leaf spring in a tubular shape. Due to the spring pressure of 100, a constant resistance against the rotational force is applied between the actuating member 97 and the protective cylinder 99, that is, between the two shaft portions 2a and 2b. As a result, the club head 3 (see FIG. 1) is temporarily fixed to the regular position with a weak force. In other respects, the configuration is the same as that of the first embodiment and the operation is the same.

However, in the rotating means 95, unlike the case of each of the above-described embodiments, the normal position of the club head 3 is not predetermined, so that the grip 4 (see FIG. 1) has a non-circular cross section. In this case, it is necessary to attach a match mark indicating the regular position of the club head 3, but since the structure is extremely simple, it can be manufactured at low cost.

In each of the above-described embodiments, the case where the rotating means 5, 25, 45, 65, 85, 95 are all incorporated in the club shaft 2 has been described, but the club head 3 and the grip 4 are described. It can also be incorporated into the connecting portion between the club shaft 2 and the club head 3 or the connecting portion between the club shaft 2 and the grip 4.

Further, in each of the above-described embodiments, the case where the axis of the rotating means 5, 25, 45, 65, 85, 95 is completely aligned with the axis of the club shaft 2 has been described, but both are almost the same. If they are parallel, the expected effect can be expected even if they do not match perfectly.

[0067]

[Effect of device]

 As described above, the present invention allows the club head to rotate at least a certain amount around an axis substantially parallel to the club shaft, so unless the golf ball is accurately caught at the sweet spot, The distance is extremely reduced, which makes it easy to determine whether or not the golf ball is caught at the sweet spot. Further, even in the case of a bad backswing, the club head rotates, so that it is possible to easily confirm and correct the defect of the own backswing. Moreover, unlike the conventional club shaft, the club shaft does not bend, so you can practice well without being too embarrassed even under the eyes of the public.

Further, in the present invention, the rotating means is provided at at least one of the club shaft, the club head, the grip, and the connecting portion thereof, so that the type of golf club can be adjusted. , You can select the optimal installation position.

Further, by providing the rotating means with a temporary fixing mechanism for temporarily fixing the club head to the regular position with a weak force, the club head can be rotated even if the swing is quite fast as long as the swing is correct. You can practice more practically.

Further, by providing the rotating means with a returning mechanism for automatically returning the misaligned club head to the regular position, the operation of returning the club head to the regular position is unnecessary, and the practice is the same as for a normal golf club. Can be done.

Further, by providing the rotating means with a fixing mechanism for fixing the club head to the regular position, it can be used for playing on the course.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing a golf club according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is an exploded perspective view of a main part of FIG.

FIG. 4 is a view corresponding to FIG. 2 showing a second embodiment of the present invention.

FIG. 5 is a view, corresponding to FIG. 2, showing a third embodiment of the present invention.

6 is a central vertical cross-sectional view of FIG.

FIG. 7 is a view corresponding to FIG. 2 showing a fourth embodiment of the present invention.

FIG. 8 is a view corresponding to FIG. 2 showing a fifth embodiment of the present invention.

FIG. 9 is a view, corresponding to FIG. 2, showing a sixth embodiment of the present invention.

[Explanation of symbols]

 1 Golf Club 2 Club Shaft 2a Tip Shaft 2b Base End Shaft 3 Club Head 4 Grip 5,25,45,65,85,95 Rotating Means 6,26,46,66,96 Guide Member 7,27,67 , 97 actuating member 8, 28, 47 return member 9, 48, 68, 98 holding member 10, 29, 49, 99 protective cylinder 11, 30, 50 spring 69 temporary fixing mechanism 70 fixing mechanism 100 lantern spring G gap

Claims (5)

[Scope of utility model registration request] 1. A club shaft; a club head provided on one end side of the club shaft; a grip provided on the other end side of the club shaft; and the club head around an axis substantially parallel to the club shaft. And a rotating means capable of rotating at least a fixed amount. 2. The golf club according to claim 1, wherein the rotating means is provided at at least one of a club shaft, a club head, a grip, and a connecting portion thereof. 3. The golf club according to claim 1, wherein the rotating means has a temporary fixing mechanism for fixing the club head to the regular position with a weak force. 4. The golf club according to claim 1, wherein the rotating means has a returning mechanism for automatically returning the misaligned club head to the normal position. 5. The golf club according to claim 1, 2, 3, or 4, wherein the rotating means has a fixing mechanism for fixing the club head at a regular position.