JP2010178943A - Golf practice tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a golf practice tool for allowing both correct body turn and a precise swing plane from slow swing to full swing to be acquired. <P>SOLUTION: The golf practice tool forms an outer diameter of a rigid shaft which rarely warps during swing in the longitudinal direction of the shaft in a fixed way, is provided with a long grip at one end of the shaft which is gripped with a gap between both hands, and includes a weight which increases weight from the other end of the shaft to a center in the longitudinal direction while positioning a center of gravity closer on the long grip side than the center in the longitudinal direction of the shaft. A normal grip in normal length provided at the other end of the shaft may be used as the weight. Preferably, the weight is set in a position where the proportion of the length from one end of the shaft to the center of gravity and the length from the other end of the shaft to the center of gravity becomes 1:1.3 to 1:2. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a golf practice tool suitable for basic swing practice.

  In order to acquire the correct basic swing of golf, it is generally said that “practice to acquire the correct body turn to synchronize the body and arm correctly” and “practice to acquire the correct swing trajectory” are effective. ing.

  And to practice to acquire the correct body turn, the practice of swinging by rotating the whole body and synchronizing the body and arm correctly by forcibly creating a situation where the wrists can be turned back and cannot be manually struck. It is effective.

  In order to acquire the correct swing path, it is effective to practice slowly increasing the swing speed by checking the swing path by slowing the swing.

  On the other hand, conventionally, golf practice includes “practicing swinging with a driver”, “practicing swinging a broom”, and “swinging with a device provided with a grip on one end of a rigid shaft and a weight on the other end” "Practice", "Practicing swinging a soft shaft with grips at both ends", "Practicing swing with a device with normal golf club grips at both ends of a normal golf club shaft", etc. It was done.

  However, the practice of swinging with a driver has the following drawbacks. Since the driver has a heavy head and the center of gravity is on the head side, when the driver is swung, the driver is easily swung by a large inertia force generated when the driver is swung. For this reason, in the practice of swinging with a driver, there was a situation that the wrist was easy to return and it was easy to hit.

  In other words, when practicing swinging with a driver, it is difficult to practice body turns that synchronize the body and arms because the wrists are easy to return and hand strikes.

  Also, since the shaft near the head is thin and the head is heavy, even when the driver makes a slow swing, the shaft will be shaken, making it difficult to check the swing path, and the weight of the head tends to cause fatigue. There were various problems. Furthermore, when the driver is fully swung, a large inertial force is generated in the head and the shaft is bent, so it is difficult to check the swing path of the shaft. In addition, since there is a head, there is a problem that it is difficult for golf practitioners to pay attention to the head and it is difficult to check the swing path of the shaft. Thus, the practice of swinging with a driver is unsuitable for both “body turn practice” and “learning the correct swing trajectory”.

  In the practice of swinging a broom, because the air resistance when swinging the broom is large, the practitioner swings the entire arm while rotating the body to overcome this large air resistance, so the body turn Although it is effective for practice, it was difficult for the practitioner to practice for a long time because he had to swing a broom to overcome a large air resistance.

  In practice of swinging a broom, if the broom is swung slowly, the above-mentioned large air resistance does not occur. However, the shape of the broom is greatly different from that of an actual golf club. The ideal swing trajectory cannot be acquired by practicing a broom. In this way, in the practice of swinging a broom, even though “practicing body turns” is possible, it is not possible to “learn the correct swing trajectory”.

  As shown in FIG. 12, as a swing training device, a device in which a grip 101 is provided at one end of a rigid shaft 100 and a weight 102 is provided at the other end is known. . However, this device is a so-called muscle training exerciser that strengthens muscles by swinging by gripping the grip 101, and does not perform “body turn practice” and “practice to acquire the correct swing trajectory”. Absent.

  The above-described device provided with grips at both ends of the soft shaft is a device designed for the purpose of practicing body turns. When practicing swinging with this device, the shaft is soft, and because of its own weight, it is easy to bend and bend, so by slow swinging so that this soft shaft does not bend, This is useful for practicing body turns that synchronize your arms. However, since the soft shaft has to be swung slowly so as not to bend, it is not possible to practice full swinging the soft shaft. Thus, in swing practice using equipment with grips on both ends of the soft shaft, it is possible to practice full swing body turn even if slow swing body turn practice is possible Can not. In addition, since the shaft is soft and easily bends due to its own weight, the correct swing path cannot be practiced.

Further, a golf practice apparatus is also known which is designed for practicing a swing path and is provided with grips of a normal golf club of the same type on both ends of a normal golf club shaft. When practicing swinging using this instrument, this instrument is lightweight, so the swing path can be confirmed slowly and visually, and there is little fatigue. However, there were the following problems.
A. Since the center of gravity of the instrument is almost in the center of the shaft, there is no sense of weight on the tip side, and you can not feel the swing trajectory with your body.
B. Too light (about 170 to 200 grams), the swing feeling with the actual driver (about 280 grams) is too different.
C. Because the tip side is thin, the shaft is bent during a full swing, making it difficult to check the swing path.

  As described above, in the practice methods that have been conventionally performed, there is no suitable instrument that can practice both body turn and swing trajectory correction from slow swing to full swing.

On the other hand, Patent Document 1 discloses a golf club for practice in which both ends of a shaft are provided with a short one-handed grip that is about 3/4 of a normal grip and a normal-sized two-handed grip. The purpose of the practice is “Practice on a swing orbit by holding a grip for one hand. ”,“ Practice swinging with the grip of both hands and the same feeling as an actual golf club. It is in that. However, the invention described in Patent Document 1 has a structure in which a grip for one hand is provided in addition to a normal grip for both hands, and a weight is provided on the grip side for one hand. This device can be used to practice swinging trajectories by swinging while holding this one-handed grip with the arm on the opposite side of the toe arm. However, golf practice using this device has the following problems.
D. Holding the grip for one hand with the hand opposite to the dominant arm and practicing the swing trajectory is a special method, not a realistic practice. In addition, when swinging while holding the grip for one hand, the weight provided on the grip for one hand makes the hand feel and there is no weight sensation on the tip side, and the swing trajectory cannot be felt by the body. Of course, when you swing with a grip for one hand, you can't practice body turns.
E. When swinging with a grip for both hands, the driver is not only practicing body turns because the weight of the driver will cause the wrist to turn back and hand strikes easily. It is not an exercise to learn the correct swing trajectory.
F. The length is about the same as a baseball bat, which is not practical for golf practice.

  The present invention has been made in view of the problems of the background art described above, and an object thereof is to provide a golf practice tool that can acquire both a correct body turn and an accurate swing plane from a slow swing to a full swing. is there.

According to the first aspect of the present invention, the outer diameter of a rigid shaft that hardly deforms during a swing is formed constant over the longitudinal direction of the shaft, and a gap between both hands is provided at one end of the shaft. Equipped with a long grip to grip,
A weight is provided to increase the weight from the other end of the shaft to the center in the length direction while locating the center of gravity closer to the long grip side than the center in the length direction of the shaft.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, the weight is provided by providing a normal grip of a normal length at the other end of the shaft.

  The invention according to claim 3 is the invention according to claim 2, in which the center of gravity in the longitudinal direction is the length from the end of the long grip to the center of gravity, and the grip The length from the end to the center of gravity is set at a position of 1: 1.3 to 1: 2.

  The invention according to claim 4 is the invention according to any one of claims 1 to 2, wherein the length is substantially equal to the length excluding the head portion in the driver club. is there.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the rigid shaft is formed in a cylindrical shape, and the diameter thereof is constant over the longitudinal direction. The diameter is about 13 mm to 17 mm.

  According to the first aspect of the present invention, since the golf practitioner swings by gripping the long grip with a gap between both hands, the golf practitioner is unlikely to turn his wrist or hit the hand. For this reason, it is possible to practice body turn by swinging the entire body and arms in synchronization, and to experience and memorize the senses at that time. It can be used in actual golf play. Moreover, even if a golf practitioner holds a long grip with a gap between both hands, the golf practitioner can swing with both hands not protruding from the long grip. Therefore, the golf practitioner can practice the correct swing by grasping the long grip firmly without slipping from the slow swing to the full swing. Further, the outer diameter of the shaft is constant over the length direction. For this reason, unlike the case where it is tapered toward the tip side like a normal driver shaft, even if the golf practitioner fully swings the golf practice tool, the golf practice tool is less likely to be blurred. You can swing in the state. Moreover, since the weight which increases weight is provided at the tip, it is not extremely light and can swing with a weight that allows the driver to be conscious. Thus, according to the first aspect of the present invention, it is possible to practice a correct golf swing while maintaining a feeling close to the weight of an actual golf club from a slow swing to a full swing. You can experience the senses.

  According to the second aspect of the present invention, when a golf practitioner swings while holding a normal grip, there is no head unlike a normal driver club, and therefore, the tip side is not extremely heavy, and therefore, in the middle of the swing In this way, a large inertia force is generated and the golf practice tool does not shake, and the player can swing while being aware of and confirming the correct swing path.

  According to the third aspect of the present invention, when swinging while grasping the long grip, the center of gravity is located closer to the long grip side than the center in the longitudinal direction of the golf practice tool, and the so-called hand tone is obtained. Therefore, the tip side of the golf practice tool does not feel heavy. As a result, since a large inertia force is not generated when swinging, the golf practitioner does not swing as if swung with the golf practice tool. Therefore, the wrist of the golf practitioner does not return and the hand does not hit. In addition, a synergistic effect of such an effect and the practice of swinging by holding a long grip with a gap between both hands, it is possible to practice a more correct body turn. On the other hand, when swinging while holding a normal grip, a so-called tone is obtained. That is, not only visually confirming the swing trajectory, but also having a certain amount of weight due to the long grip on the tip side, it is possible to practice the correct swing trajectory while feeling the swing trajectory with the body.

  According to the invention described in claim 4, since the total length is the same as that of the portion excluding the head of a normal driver club, it is easy to imagine the virtual position of the head, and the correct swing path in the actual driver club is confirmed. You can swing while.

  According to the fifth aspect of the present invention, since the outer diameter of the shaft is 13 mm or more, there is no blur even when a full swing is performed, and since the outer diameter of the shaft is 17 mm or less, You can practice as if you were holding a driver.

It is a perspective view of a golf practice tool. It is sectional drawing of a golf practice tool. It is a side view of a golf practice tool. It is a figure explaining the effect | action of a golf practice tool. It is a figure explaining the effect | action of a golf practice tool. It is a figure explaining the effect | action of a golf practice tool. It is a figure explaining the effect | action of a golf practice tool. It is a figure explaining the effect | action of a golf practice tool. It is a figure explaining the effect | action of a golf practice tool. It is a side view which shows the modification of a golf practice tool. It is a figure which shows another usage of a golf practice tool. It is a figure which shows the golf practice tool of background art.

  The golf practice tool 1 is composed of a rigid shaft 2 that is cylindrical and formed in a rod shape, a long grip 3 provided at one end of the shaft 2, and a normal grip 4 provided at the other end. ing. The overall weight of this golf practice tool 1 is preferably 230 grams, which is slightly lighter than the actual driver weight of about 280 grams.

  The shaft 2 is formed of the same material as the shaft of the golf club. Here, the term “hard” refers to a hardness that hardly causes bending during a swing. This hardness is about the same as the hardness of the thick portion of the shaft used for an actual driver. The total length of the golf practice tool 1 is about 1070 mm, which is set to be substantially the same as the length obtained by removing the head from a normal driver club. The diameter of the cross section of the shaft 2 is constant over the length direction of the shaft 2. The outer diameter of the cross section is about 13 mm to about 17 mm.

  The normal grip 4 has the same shape and material as those of a grip provided on a general golf club.

  The long grip 3 is made of the same material as the normal grip 4, but the length L1 of the long grip 3 is longer than the length L2 of the normal grip, as shown in FIG. Therefore, the weight of the long grip 3 is heavier than that of the normal grip 4. The weight of the long grip 3 is about 100 grams, and the weight of the normal grip is about 30 grams to about 50 grams. When the long grip 3 is swung while swinging, it functions as a weight for weight balance. To do. The preferred length of L1 is about 32 cm, and L2 is usually about 25.5 cm. The weight of the shaft 2 is about 80 grams.

  As described above, since the long grip 3 is heavier than the normal grip 4, the center of gravity G of the golf practice tool 1 is closer to the long grip 3 than the center P in the length direction of the golf practice tool 1. It is in. Here, the position of the center of gravity G is determined by the balance between the weight of the long grip 3 and the weight of the normal grip 4, but the length L3 from the end of the long grip 3 to the center of gravity G and the normal grip 4 It is preferable that the length L4 from the end to the center of gravity G is about 1: 1.3 to 1: 2.

  Next, the operation will be described. First, the case of practicing body turns will be described. As shown in FIG. 4, the golf practitioner S holds the long grip 3 of the golf practice tool with both hands 5 and 6. At this time, the left and right hands 5 and 6 open about one hand or two hand fists. Since the length of the long grip 3 is longer than that of the normal grip 4, even if the long grip 3 is gripped by opening the left and right hands 5, 6, the hands 5, 6 protrude from the long grip 3. The golf practitioner S can hold the long grip 3 firmly without sliding.

  The golf swing is practiced with this grip, and first an address is obtained as shown in FIG. Next, the golf practice tool 1 is shaken as shown in FIG. 6, and then the golf practice tool 1 is swung down as shown in FIG.

  By the way, when the left and right hands 5 and 6 are brought into contact with each other and swinging as usual, there is a problem that the wrist is easy to return and the hand is likely to hit. However, as described above, when swinging with a gap between the left and right hands 5 and 6 and holding the long grip 3, the wrist does not return and the hand can be avoided. , You can practice swinging by rotating the body naturally. In other words, it is possible to experience and memorize the state of swinging by rotating the body while avoiding turning of the wrist or hitting hands, so that it is possible to practice ideal body turns.

  As described above, when the long grip 3 is gripped, the center of gravity G of the golf practice tool 1 is closer to the hand of the golf practicer S than the center P in the length direction of the golf practice tool 1. That is, when the golf practitioner S grips the golf practice tool 1, the tip side of the golf practice tool 1 does not feel heavier than when a normal golf club is gripped. As a result, when the golf practice tool 1 is swung, since a large inertia force is not generated, the golf practice tool 1 does not swing as if swung by the golf practice tool 1, and therefore, the wrist does not return and the hand does not hit. . In this way, by feeling and memorizing the sense of body turn, the memorized sense can be utilized in actual golf play.

  Next, the case of practicing to acquire the correct swing path will be described. In this case, as shown in FIG. 8, the normal grip 4 is gripped with both hands, as in the case of gripping a general golf club. Unlike the normal driver club, the golf practice tool 1 does not have a head and is lightweight, and the shaft has a constant thickness from the hand side to the tip side. Therefore, as shown in FIG. It is possible to swing slowly while checking the swing trajectory M.

  Moreover, since the golf practice tool 1 does not have a head unlike a normal driver club, the tip is not extremely heavy, and since the hard shaft 2 is used, there is a large inertia during the swing. The golf practice tool 1 does not shake due to the force generated, and the total length of the golf practice tool 1 is about the same as the length obtained by removing the head from a normal driver club. It is easy to swing while being aware of and confirming the correct swing trajectory M in an actual driver.

  Further, when the golf practitioner S grasps the normal grip 4 of the golf practice tool 1, the center of gravity G of the golf practice tool 1 is located on the tip side with respect to the center P in the length direction of the golf practice tool 1. A certain amount of weight can be experienced at the tip side of the tool 1.

  Further, when the diameter of the shaft 2 of the golf practice tool 1 is 13 mm or more, the shaft 2 may be shaken or bend even if the golf practice tool 1 is fully swung as compared with the case where the diameter is less than 12 mm. Therefore, the swing trajectory can be confirmed accurately. Further, when the diameter of the shaft 2 is changed from 13 mm to 17 mm, most of the long grips and normal grips that are distributed in the market can be attached to both ends of the shaft 2. When the diameter of the shaft 2 is 15 mm, the size is the same as the diameter of a grip portion of a general golf club. Therefore, the golf practice tool 1 can be swung as if holding a normal golf club. it can. Moreover, since the weight of the long grip 3 of the golf practice tool 1 is about 100 grams while the weight of the golf head of a normal golf club is about 150 grams, the difference between them (about 50 grams), Since the golf practice tool 1 becomes lighter, when the golf practice tool 1 is used to practice swing, there is little feeling of fatigue and the swing can be made with a feeling close to the weight of the driver.

  Unlike the actual driver club or the so-called muscle training practice device described in the background art, the golf practice tool 1 is easy to carry because it has no head and is lightweight. There is no danger of slamming something accidentally, it is excellent in safety and has the effect of suppressing the uncomfortable feeling given to the surroundings.

  Further, as described above, since the golf practice tool 1 is lighter than a normal driver club, when the actual driver club is swung after practiced with the golf practice tool 1, the weight of the head is realized. it can. That is, the correct swing can be learned, and at the same time, the sense of position of the head when the driver club is swung is generated, so that the head can be accurately applied to the golf ball.

  In the above description, the case where the golf practice tool 1 in which the long grip 3 is provided at one end of the shaft 2 and the normal grip 4 is provided at the other end is used, but as shown in FIG. It is also possible to provide a weight W at the other end. The weight W is set so as to increase the weight from the other end of the shaft 2 to the longitudinal center P while bringing the center of gravity G closer to the elongated grip 3 than the longitudinal center P of the shaft 2. Is done. Then, by holding the long grip 3 and swinging, the body turn can be practiced as shown in FIGS. The weight of the weight W is preferably about 30 grams to about 50 grams, and can be formed of synthetic resin, rubber, or the like that is attached and fixed to the distal end side of the shaft 2.

  Furthermore, as shown in FIG. 11, it is possible to perform a stretching exercise by grasping the grips 3 and 4 at both ends of the golf practice tool 1.

  In addition, this invention is not limited to the above embodiment, It can change within the technical scope as described in a claim.

  The present invention is used when learning the correct basic swing of golf.

1 Golf Practice Tool 2 Shaft 3 Long Grip 4 Normal Grip G Center of Gravity P Shaft Longitudinal Center W Weight

JP 2000-14850 A

Claims (5)

The outer diameter of the rigid shaft that hardly bends during the swing is formed constant over the longitudinal direction of the shaft, and a long grip is provided at one end of the shaft with a gap between both hands,
A golf practice tool comprising a weight that increases the weight from the other end of the shaft to the center in the length direction while locating the center of gravity on the side of the long grip from the center in the length direction of the shaft.
The golf practice tool according to claim 1, wherein the weight is obtained by providing a normal grip having a normal length at the other end of the shaft.
The center of gravity is set at a position where the length from one end of the shaft to the center of gravity and the length from the other end of the shaft to the center of gravity are 1: 1.3 to 1: 2. The golf practice tool according to claim 2.
The golf practice tool according to any one of claims 1 to 3, wherein the length is substantially equal to a length excluding a head portion of the driver club.
  The golf practice tool according to any one of claims 1 to 4, wherein the hard shaft is formed in a cylindrical shape and has an outer diameter of 13 mm to 17 mm.

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