JP2010279677A - Training ball - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a practice implement allowing a user to stabilize control by recognizing a release point and improving the sensitivity at the fingertips and to pitch a ball with great velocity by making a wide follow-through in the pitching practice, and allowing the user to hit a ball skillfully pitched at a low frequency of revolution in the batting practice. <P>SOLUTION: The training ball is composed of a spherical body and more than one hole formed in the spherical body. The hole more than one hole is formed from the surface layer of the spherical body to the depth of the spherical body. The diameter of the hole more than one hole is constant from the starting point to any position in each hole. The diameter at the terminal point of the hole is larger than the diameter at the starting point in each hole. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a training ball that can train the lower body at the same time as training the fingertips in sports using fingertips such as baseball, golf, judo, handball, tennis, sumo, badminton, and volleyball.

  Conventionally, there has been considered an instrument for forging a fingertip using a dumbbell to prevent an injury or the like during sports (for example, Patent Document 1).

  JP 2008-55138 A

  The instrument described in Patent Document 1 is a dumbbell shape with weights attached to both ends of a grip, and each finger is inserted into a hole penetrating the grip, and training is performed by lifting the instrument or rotating the finger. In addition, he was able to train the base of the finger and the surrounding muscles and tendons. However, I was able to train the fingers and the base of the fingers, and the surrounding muscles and tendons, but for example, a baseball pitcher felt uncomfortable when trying to throw the ball like a ball by holding it with a finger. . Also, the entire finger was trained, but it was not possible to train only the fingertip.

  Also, it was not a ball-like shape that could be used for batting and throwing practice.

  The present invention takes into account the above-mentioned problems of the devices of the patent literature, and in sports using the fingertips, it is possible to increase the exercise ability by forging the fingertips and to throw a low-rotation ball, An object of the present invention is to provide a training ball capable of hitting a ball.

  A spherical body and one or more holes formed in the spherical body, wherein the one or more holes are formed from a surface of the spherical body to a deep part of the spherical body, and the one or more holes are The diameter is the same from the starting point of each hole to an arbitrary position, and the end point of each hole is larger in diameter than each hole at the starting point.

  The one or more holes formed in the spherical body are characterized by penetrating from the surface of the spherical body to the surface on the back side of the surface of the spherical body.

  The one or more holes formed in the spherical body are formed so as not to be parallel to the center line of the spherical body.

  Each of the one or more holes formed in the spherical body has a shape such that a human finger can be easily inserted, and the hole path is formed in an arc shape.

  Each of the one or more holes to be formed in the spherical body is composed of two, one of the holes is formed longer than the other of the holes, and 2 from an arbitrary position of each of the holes to a final point portion. Fork is branched.

  The spherical body has a symmetrical shape, and can be formed in a spherical shape, an elliptical shape, a circular shape, a cylindrical shape, a polygonal shape, a polygonal columnar shape, or the like.

  The spherical material may be formed of a material such as iron, casting, resin, wood, rubber, leather, stainless steel, aluminum, cork, polystyrene foam, cloth, paper, or the like.

  The training ball according to claim 1 has the same diameter from the start point of the hole formed in the spherical body to an arbitrary position, and can be inclined to the back of the hole by increasing the diameter of the end point of each hole, The first joint of each finger can be easily hooked, and the excellent effect of preventing the training ball from coming off from the fingertip is exhibited.

  Also, the second finger and the third finger or each finger are put in the holes, and the second finger and the third finger are concentrated by moving the fingertip while holding the spherical body and rotating the wrist and the shoulder. The finger or the fingertip of each finger, particularly the first joint, is trained, and the arm and shoulder muscles connected from the fingertip are stimulated to exert excellent effects such as grip strength and strength.

  In addition, you can hold the ball without grasping the ball with your finger by putting your finger into the training ball, and remove the force from the upper body such as fingertip, wrist, elbow, arm, shoulder, etc. without grasping the ball with your finger It is possible to perform a lower body-led pitching.

  The training ball according to claim 2 can be molded with a single mold by penetrating the hole into the spherical body, and exhibits an excellent effect that the cost can be reduced in producing a product.

  The training ball according to claim 3 can put a finger into the hole with the finger naturally opened by not positioning the hole path on the center line from directly above when viewed from the front of the spherical body, and without a sense of incongruity Excellent effect that you can hold the training ball with your fingertips.

  The training ball according to claim 4 can be inserted into the hole with the finger naturally rounded as if the ball was gripped by forming the hole path in an arc shape, It has an excellent effect of being able to train with the image of when you are.

  In the training ball according to claim 5, for example, two holes are formed so that the index finger and the middle finger can be inserted, and the length of one hole is increased to insert the finger according to the length of the index finger and the middle finger. Training can be made easier. In addition, since the bifurcating from the arbitrary position to the final point of the hole, an excellent effect that a right-handed and left-handed person can be shared with one ball is exhibited.

  In addition, the bifurcating branch from an arbitrary position of the hole to the final point portion forms an inclined angle from the arbitrary position of the hole to the final point, and hooks the first joint of the finger. In addition to creating space, when the fingertip hits the wall near the edge when the hole splits into two, the superior effect of reducing the risk of a problem that the fingertip is caught and the training ball slips out of the fingertip. To do.

  In addition, there is a space for hooking the first joint of the finger, and the fingernail is designed so that the nail of the fingertip hits the wall immediately before bifurcating. The training ball can be lifted to push up the wall, and the first joint of the finger can bend and stretch while applying a load only to the first joint of the finger. By exercising only the first joint of the finger, the grip strength, finger pressure, arms, and muscles around the shoulder are trained. As a result, it is possible to prevent a decrease in grip strength during the game, and to increase the rotational force to the ball with a fingertip when throwing, and to throw a crisp ball such as a fast ball and a changing ball. Exhibits excellent effects.

  The training ball according to claim 6 can be formed as a training ball as long as it has a symmetrical shape in addition to a spherical body, and has a columnar shape such as an elliptical shape, a cylindrical shape, or a polygonal column shape. With regard to those, it can be said that all the fingers are opened and thrown by forming four holes into which the fingers from the second finger to the fifth finger except the first finger enter. By throwing with your fingers open, the upper body such as the arms and shoulders will not get power, and by pulling out the power from the upper body, you will get weight on the lower body by the amount of power that you pulled out from the upper body, and a powerful ball led by the lower body You can demonstrate the excellent effect of being able to practice throwing.

  The training ball according to claim 7, for example, when the ball is made of a light material such as wood, plastic, rubber, resin, cork, etc., the second finger and the third finger are inserted into the hole of the spherical body. Hold the center of the body and perform a series of pitching motions, such as takeback, ball release, follow-through, and finish. Throwing in the sense of pulling forward makes the release slower than the normal pitching release point, allowing the arm to swing forward. By swinging the arm forward, the follow-through will inevitably increase and the arm swinging speed will be demonstrated.

  Moreover, it can also be said that the training ball of the present invention is hit by forming it from a lightweight material. Unlike normal throwing where the number of revolutions is applied to the ball with a fingertip and the ball tip is thrown forward from the second and third fingers inserted into the hole of the sphere, The number of rotations when flying can be suppressed, and training can be performed by hitting a ball with a low ball speed and a low ball speed. The ability to practice hitting a ball type such as a knuckle ball with a low rotation speed with a high degree of difficulty makes it possible to improve the hitting technique and to perform training for both throwing and hitting. .

  It is the figure which respectively represented the centerline from right side seeing from the front of a sphere, the centerline from right above seen from the front, and the centerline from the side seen from the front.   It is a front view of the training ball of the present invention.   It is a bottom view of the training ball of the present invention.   It is a left view of the training ball of the present invention.   It is a left view of the 2nd Example of the training ball | bowl of this invention.   It is a front view of the 3rd example of the training ball of the present invention.   It is a left view of the 3rd Example of the training ball | bowl of this invention.   It is a front view of the 4th example of the training ball of the present invention.   It is a left view of the 4th Example of the training ball of this invention.   It is a top view of the 4th example of the training ball of the present invention.   It is a front view of the 5th example of a training ball of the present invention.   It is a bottom view of the fifth embodiment of the training ball of the present invention.   FIG. 12 is a left side cross-sectional view taken along the line DD of FIG. 11 of the fifth embodiment of the training ball of the present invention.   It is the EE line right side sectional view of Drawing 5 of the 5th example of the training ball of the present invention.   It is a reference figure which shows the use condition of the training ball of this invention.   It is a reference figure which shows the use condition of the 2nd Example of the training ball | bowl of this invention.   It is a reference figure which shows the use condition of the 3rd Example of the training ball | bowl of this invention.   It is a reference figure of the left side surface which shows the use condition of the right-handed person of the 5th Example of the training ball of this invention.   It is a reference figure of the left side surface which shows the use condition of the left-handed person of the 5th Example of the training ball of this invention.   This is the release point when throwing with a normal ball.   It is a figure showing the position of the release point of the training ball of the present invention.   It is the figure showing from the take-back of the 3rd Example of the training ball | bowl of this invention to a follow through.

  Hereinafter, the present invention will be described with reference to FIGS. However, the form for implementing below demonstrates this invention as an example about a training ball | bowl, and is not limited to the term of the figure of this description.

  FIG. 1 is a diagram showing a center line from the side when a general sphere is viewed from the front, a center line from right above when viewed from the front, and a center line from the side when viewed from the front. Each center line is a center line serving as a guide for forming a hole in the spherical body.

  FIG. 2 is a front view of the training ball of the present invention. Spherical body 1, hole 2, 2 ′, center line A from the side as viewed from the front, and center line B from the top as viewed from the front. The holes 2 and 2 'are formed symmetrically with respect to the center line B, and the angles of the holes 2 and 2' extending from the starting point as the entrance of the holes 2 and 2 'are the second fingers when the palm is naturally opened, It is formed at the general angle of the third finger. The depths of the holes 2 and 2 'can be freely formed such as the length of the finger about the first joint, the length from the fingertip to the second joint, and the length where the finger can be entirely inserted. The size of the spherical body, the shape of the hole, the depth, the diameter of the hole, etc. can be set to a size that anyone can use by inserting a finger into the hole, and the weight and specifications are optional so that anyone can use it. It can be set freely.

  In addition, the wall between the 2 hole and the 2 'hole formed in the spherical body 1 is sandwiched between the second finger and the third finger, and the second finger is viewed while height images such as a higher ball and a lower ball. By loosening the third finger, the spherical body can be released from the finger and fly to the catching side, and at the moment when the spherical body is separated from the finger, the fingertip is placed on the wall surface between the holes 2, 2 'of the spherical body 1 By rubbing, you can see the position of the release point with your fingertips.

  FIG. 3 is a bottom view of the training ball of the present invention. Spherical body 1, hole 2, 2 ′, center line A from the side as viewed from the front, and center line C from the side as viewed from the front. Holes 2, 2 ′ are formed along the center line A from the side of the spherical body 1. By forming the holes 2, 2 ′ along the center line A, the spherical bodies can be stably sandwiched without any bias in the center of gravity when the fingers are put in the holes 2, 2 ′ and the spheres are held.

  FIG. 4 is a left side view of the training ball of the present invention. The spherical body 1, the hole 2, the center line B from right above when viewed from the front, and the center line C from the side as viewed from the front. The hole 2 is formed at a right angle to the surface of the spherical body 1, and the depth is set to the first joint of the finger, or from the first joint to the second joint, or an arbitrary length so that the entire finger can be inserted. it can. For example, if it is used for baseball, the second hole can be put in the second finger if it is right-handed, and if it is left-handed, it can be put in the second finger of the left hand to hold the spherical body.

  FIG. 5 is a left side view of the second embodiment of the training ball of the present invention. The spherical body 3, the holes 4, 4 ′, a center line B from directly above when viewed from the front, and a center line C from the side as viewed from the front. The holes 4, 4 ′ are formed so as not to be parallel to the center line B viewed from directly above the spherical body 3. For example, the second finger is inserted into the hole 4 ′ where the tip of the hole faces the left side from the center line B, and the third finger is inserted into the hole 4 which faces the right side from the center line B. The angle of the holes 4 and 4 'into which the finger is inserted is set so that the position where the hole angle becomes horizontal becomes the release point when the ball is released.

  FIG. 6 is a front view of a third embodiment of the training ball of the present invention. The spherical body 5, the holes 6 and 6 ′ formed in the spherical body, the center line A from the side as viewed from the front, and the center line B from the top as viewed from the front. In the third embodiment, two holes 6 and 6 ′ are formed at equal intervals on the center line B from directly above, and the depth of the hole 6 ′ is longer than the hole 6. This is because the finger length of a normal human hand is longer in the third finger than in the second finger. The second finger is inserted into the hole 6 and the third finger is inserted into the hole 6 '. By putting your finger in, you can smoothly throw and train your fingertips.

  FIG. 7 is a left side view of the third embodiment of the training ball of the present invention. A hole 6 formed in a spherical body, a starting point 7 of the hole, a final point 9 of the hole, a step 8 formed in the hole, a center line B from directly above when the spherical body is viewed from the front, and a center from the side when viewed from the front. Consists of line C. The hole forms a depth along the center line B from directly above when viewed from the front, but the portion to be the final point 9 is formed so as not to be positioned on the center line B from directly above. By not locating the final point 9 on the center line B from directly above, an angle is formed in the hole from the start point 7 to the final point 9 of the hole, and the step portion 8 is formed. In FIG. 7, the diameter of the portion that becomes the final point 9 is larger than the starting point 7 of the hole.

  By forming the step 8 and the final point 9, the part of the finger from the first joint is caught on the step 8 and the final point 9, and the fingertip is trained by the load of the spherical body on the fingertip when throwing. Can do. By training your fingertips, you can throw a crisp ball when you throw a ball, such as adding rotation speed to the ball or increasing the change of the changing ball. Further, since the step portion 8 is inclined, it is possible to reduce a risk that a finger is caught on the spherical body and the ball field body is dropped.

  FIG. 8 is a front view of a fourth embodiment of the training ball of the present invention. A hole 10, 10 ′ formed in a spherical body, a center line A from the side as viewed from the front, and a center line B from directly above as viewed from the front. In the fourth embodiment, holes 10, 10 'penetrate through the spherical body. This is because the process of the mold can be omitted when commercializing, and is functionally equivalent to the other embodiments.

  FIG. 9 is a left side view of the fourth embodiment of the training ball of the present invention. Hole 10 formed in a spherical body, hole start point 11, hole end point 13, step 12, penetration end point 14, center line B from directly above when viewed from the front, center line from the side as viewed from the front Composed of C. As in FIG. 7, the hole 11 penetrates the hole along the center line B from directly above, but the portion to be the final point 13 is formed so as not to be positioned on the center line B. By not locating the final point 13 on the center line B from directly above, an angle is formed in the hole from the starting point 11 to the final point 13 of the hole, and a step portion 12 is formed. In the fourth embodiment, it is formed so that the diameter of the portion that becomes the penetrating end point 14 is larger than the starting point 11 of the hole.

  FIG. 10 is a plan view of a fourth embodiment of the training ball of the present invention. It consists of holes 10 and 10 'formed in a spherical body, penetrating end points 14 and 14', a center line A from the side seen from the front, and a center line C from the side seen from the front. The starting points of the holes 10, 10 'penetrating the spherical body are circular, but the shapes of the penetrating end points 14, 14' are oval. The holes 10 and 10 'penetrating the spherical body are changed in the shape of the hole at the starting point and the shape of the hole 14 as the penetrating end point, or the diameters of the end points 14 and 14' are made larger than those of the holes 10 and 10 'in FIG. A stepped portion 12 is formed. By forming the stepped portion 12, the fingertip can be hooked to the final point of FIG. 9-13 and the stepped portion 12, and the body learns the degree of force applied to the fingertip when throwing and develops the sense of the fingertip Will be able to.

  FIG. 11 is a front view of a fifth embodiment of the training ball of the present invention. Spherical body 15, holes 16, 16 ′, center line A from the side when viewed from the front, center line B from the top when viewed from the front, cut surface DD line, cut surface EE line . A hole 16 ′ on the right side when viewed from the front is formed longer than the hole 16. This is because human fingers do not have the same length for any finger, and the length of the hole is increased or decreased so that any finger can be used for training.

  FIG. 12 is a bottom view of the fifth embodiment of the training ball of the present invention. Spherical body 15, holes 16 and 16 ', for example, final points a and b of hole 16 where the second finger enters, for example, final points a' and b 'of hole 16' where the third finger enters, from the side as viewed from the front A center line A, and a center line C from the side as viewed from the front. The holes 16 and 16 'are formed on the center lines A and C, but a, b, a' and b 'which are the final points of the holes 16 and 16' represented by dotted lines are center lines viewed from the side. It is important to form it so as not to be positioned on A. The hole 16 is formed to the deep part of the spherical body, and a and b which are final points are bifurcated as shown by the dotted line. Further, the portions a ′ and b ′ which are the final points of the holes 16 ′ are also bifurcated.

  FIG. 13 is a left side cross-sectional view of the fifth embodiment of the training ball of the present invention taken along line D-D in FIG. The spherical body 15, the hole 16, the final points a and b of the hole 16, and the dotted line behind the hole 16 are the holes in FIG. 1-16 ′, the final points a ′ and b ′ of the hole 16 ′, the front surface A center line B from directly above as viewed from the front, and a center line C from the side as viewed from the front. The holes 16 and the final points a and b of the hole 16 are formed on the center line B from above. The reason why the final points a 'and b' of the hole 16 'indicated by the dotted line are higher than the final points a and b of the hole 16 is that the hole 16' is longer than the hole 16 as shown in FIG. It is because it has been. The right-handed person uses, for example, the right index finger at the final point b and the middle finger of the right hand at the final point b ′.

  In addition, the final points a and b are branched from an arbitrary position of the hole 16 on the center line B from directly above as viewed from the front, and the projecting portion faces the starting point side of the hole 16 at this branch point. Is formed. Similarly, a branching point at which the final points a ′ and b ′ of the hole diagram 14-16 ′ branch also faces the starting point side of the hole 16 ′, and a protrusion is formed. This protrusion is designed to come into contact with the nail side opposite to the belly of the finger. The nail is pressed against the protrusion and the training ball of the present invention is raised or lowered only with the fingertip. Can bend and stretch.

  FIG. 14 is a right side cross-sectional view taken along line EE of FIG. 11 of the fifth embodiment of the training ball of the present invention. Spherical body 15, hole 16 ', final point a', b 'of hole 16', and dotted line behind hole 16 'are the final points a and b of hole 13-13. It consists of a center line B from above and a center line C from the side as viewed from the front. The final points a 'and b' of the holes 16 'and 16' are formed on the center line B from directly above. Also, the reason why the final points a and b represented by dotted lines are lower than the final points a 'and b' of the hole 16 'is that the holes in FIGS. 11-16 are formed shorter than the hole 16'. . The left-handed person uses, for example, the left index finger at the final point a and the middle finger of the left hand at the final point a ′.

  13 and 14 are both the same sphere 15, and bifurcating the final points of the holes 16 and 16 'so that one training ball can be used for both right-handed and left-handed use. It is to do.

  FIG. 15 is a reference diagram showing a use state of the training ball of the present invention. A finger is inserted into the hole formed in the spherical body as shown in FIG. Hold the hole wall with the belly of your finger and start pitching in this state. When the arm turns straight in the pitching motion trajectory, the spherical body comes off the finger and is released. The position of the release point can be grasped by removing the spherical body from the finger, so that the release can always be performed at the same place, and the control becomes stable. In addition, when a spherical body is formed of a heavy object such as iron or casting, a finger is put in the hole formed in the spherical body, and the fingers are bent and extended, and the wrist is rotated. Just by doing a load on the fingertips, you can train your fingertips, wrists, elbows, arms and so on.

  FIG. 16 is a reference diagram showing a usage state of the second embodiment of the training ball of the present invention. When a hole is formed so that the second finger can be put on the upper side and the third finger can be put on the lower side, and the finger is put in and the arm is swung, the hole becomes horizontal at the location that becomes the release point. By the way, at the time of takeback, the positions of the holes are such that the second finger faces upward and the third finger faces downward. Since the muscles on the human arm are spiral, the shoulders, elbows, wrists, and fingers are twisted during takeback, but the shoulders, elbows, wrists, and fingertips are twisted in order from release to follow-through. The muscles are gradually extending straight ahead. Therefore, when throwing, the second finger faces the catching side earlier than the third finger. The training ball of the present invention considers the point when the hole is horizontal as the release point, and forms the hole into which the second finger that faces the catch side first faces upward, and the hole into which the third finger enters facing downward is doing.

  FIG. 17 is a reference diagram showing a usage state of the fourth embodiment of the training ball of the present invention. Put the finger into the hole so that the first joint of the finger is placed from the step part of Fig. 7-8 to the final point 9 and rotate the ball using only the tip of the finger, bend it, etc. Training such as turning and swinging a sphere using arms is possible. 7-8, the last point 9 serves to prevent the fingertip from slipping, and is formed so that the finger does not come off the spherical body. If the finger does not come off, you can perform training such as swinging and turning with a spherical body, and when releasing the spherical body, extend the fingertip at the release point, the step shown in Figure 7-8, the final point The fingertip is removed from 9 and the spherical body can fly to the catching side.

  FIG. 18 is a reference diagram showing a use state when a right-handed person uses the fifth embodiment of the training ball of the present invention. Spherical body 15, hole 16 for inserting the second finger of the right hand, final points a and b of the hole 16, holes for inserting the third finger of the right hand, final points a 'and b' of Fig. 14-16 ', true from the front It consists of a center line B from above and a center line C from the side as viewed from the front. The second finger and the hole 16 into which the right finger enters are represented by a thick dotted line, and the third finger and the hole 16 'of the right hand are represented by a thin dotted line. Both the second and third fingers of the right hand are bent from the first joint and inserted into the holes 16 and 16 'and hooked so as to grasp the holes at the final points b and b'.

  For example, in the case of a right-handed person, training is performed by pushing up the training ball of the present invention while pushing the wall surfaces of the final points b and b ′ using the fingernail side while the first joint of the finger is bent. The weight of the fingertip is loaded on the fingertip, and the fingertip can be trained more effectively. Further, by bifurcating from the arbitrary position of the hole to the final points a and b on the center line B from directly above when viewed from the front, a protrusion is formed at the branch point on the center line B. By hooking a fingernail on the protrusion, it is possible to exercise only the fingertip more effectively. By strengthening your fingertips, you can strengthen your grip strength, as well as your muscles around your arms and shoulders, and in the sport that uses your fingertips, you can improve your skills and physical strength.

  FIG. 19 is a reference diagram showing a use state when a left-handed person uses the fifth embodiment of the present invention. Spherical body 15, hole 16 for inserting second finger of left hand, final points a and b of hole 16, hole for inserting third finger of left hand Final points a 'and b' of Fig. 14-16 ' It consists of a center line B from above and a center line C from the side as viewed from the front. The second finger and the second finger 16 into which the left hand enters are represented by a thick dotted line, and the third finger and the hole 16 'of the left hand are represented by a thin dotted line. Both the second finger and the third finger of the left hand are bent from the first joint and inserted into the holes 16 and 16 ′ and hooked so as to grasp the holes at the final points a and a ′.

  In various training other than baseball, put your 4th and 5th fingers into the hole to train your fingertips, and also put your 1st and 2nd fingers into the hole and train for effective grip strength In sports where you can train your muscles and use your fingertips, it is sized and structured so that you can train anywhere anytime and anywhere.

  FIG. 20 shows a diagram of release points when holding and throwing a normal ball. It is composed of a position c just before the ball leaves the finger and a position d where the ball leaves the finger. Usually, preparation for release starts before c, and the ball leaves the finger at positions c to d.

  FIG. 21 shows a diagram of release points when the training ball of the present invention is thrown. Spherical body 1, position c just before the ball leaves the finger during normal pitching, position d where the ball leaves the finger during normal pitching, release point position e at which the spherical body 1 of the present invention begins to move away from the finger , Release f.

  FIG. 20-c shows the position immediately before the ball is released from the finger when throwing a ball while holding a normal ball, but the training ball of the present invention is not yet released from the finger at the position of FIG. 21-c. It is in a state. Also, the release point of the training ball of the present invention is a position figure 21-e where the ball begins to leave the finger just before the arm is positioned in front of the body, and a position figure 21-f where the ball leaves, and the release point becomes considerably late. Yes. The later the release point, the harder the batter is to see the source of the ball, and the more likely it is that the hit will be harder to time. On the other hand, since the release point is early in FIG. 20-d, it is easy for the batter to see the origin of the ball early and to adjust the timing to the ball. In this way, by remembering the position to release your finger from the spherical body, you can grasp the release point when you actually hold the ball and throw it, and try to support the upper body by separating the ball slowly The lower body can be strung, and a ball with a weight on the lower body can be thrown naturally, making it difficult for the batter to hit.

  FIG. 22 shows a swing practice diagram of the fourth embodiment of the training ball of the present invention. The spherical body 1 is composed of arm trajectories g, h, i, j, and k at the time of swing for throwing the arm from top to bottom. At the time of g, the fingertips are extended and the swing is started with the wrist, arm, and shoulder removed. The fingertip is bent from h, and the fingertip is hooked to the final point of the hole to swing to follow-through. By repeatedly training to stretch and bend the fingertips, grip strength and muscle strength are trained.

  Further, when it is desired to release at a favorite place, the spherical body 1 can be released from the fingertip by releasing the fingertip straight from g to i without bending the finger.

  By holding the spherical body 1 to the end and performing the operation up to the follow-through, the fingertip is subjected to the weight of the spherical body 1 and a centrifugal force, and the fingertip, wrist, elbow, arm, shoulder and the like necessary for pitching are trained. Training with the fingertips as the center has the effect of increasing the pressure of the finger holding the ball and reducing the gripping force when throwing and reducing the ball power. Also, by opening your finger at the point of g and putting your finger into the hole, you can remove the force from the upper body at the beginning of the swing, and by pulling the force from the upper body, you can get weight on the lower body, You can practice throwing a ball with a weight on the ball.

  The present invention describes training balls for training fingertips for baseball pitchers, fielders and batters, but in addition to baseball, sports using fingertips such as golf, judo, handball, tennis, sumo, badminton, and volleyball It is also possible to change the shape for use.

DESCRIPTION OF SYMBOLS 1 Spherical body 2, 2 'Hole formed in spherical body 3 Spherical body 4, 4' Hole formed in spherical body 6 Spherical body 6, 6 'Hole formed in spherical body 7 Starting point 8 of spherical body In spherical body The formed step 9 The final point 10 of the hole formed in the spherical body 10, The hole 11 formed in the spherical body 11 The starting point 12 of the hole formed in the spherical body 13 The step 13 formed in the spherical body 13 The hole formed in the spherical body End points 14 and 14 ′ of the hole formed in the spherical body 15 and the hole A formed in the spherical body 16 and 16 ′ spherical body A center line B seen from the side C center line seen from the side C center line seen from the side DD Cutting line EE Cutting line a, a 'Final point b of the hole formed in the spherical body, b' Final point c of the hole formed in the spherical body c Position where release starts with normal pitching d Normal pitching Position e where the ball leaves the finger e Position f where the ball starts to leave the finger of the training ball of the present invention The trajectory of the arm during the swing down throwing arm of the state of use of the training ball of position g~k the present invention the ball away from the finger of the Ming training ball from top to bottom

Claims (7)

A sphere,
One or more holes formed in the spherical body;
Consisting of
The one or more holes are formed from the surface of the spherical body to a deep part of the spherical body, and the one or more holes have the same diameter from a starting point of each hole to an arbitrary position, and an end point of each hole. The training ball is characterized in that a portion to be larger in diameter than each hole of the starting point.   The training ball according to claim 1, wherein the one or more holes formed in the spherical body are penetrated from a surface of the spherical body to a surface on a back side of the surface of the spherical body.   The training ball according to claim 1, wherein the one or more holes formed in the spherical body are formed so as not to be parallel to a center line of the spherical body.   4. The training according to claim 1, wherein each of the one or more holes formed in the spherical body has a shape such that a human finger can be easily inserted, and the hole path is formed in an arc shape. ball.   Each of the one or more holes to be formed in the spherical body is composed of two, one of the holes is formed longer than the other of the holes, and 2 from an arbitrary position of each of the holes to a final point portion. The training ball according to claim 1, wherein the training ball is branched.   6. The spherical body according to claim 1, wherein the spherical body has a symmetrical shape, and can be formed in a spherical shape, an elliptical shape, a circular shape, a cylindrical shape, a polygonal shape, a polygonal columnar shape, or the like. Training ball.   The training ball according to claim 1, wherein the material of the spherical body can be formed of a material such as iron, casting, resin, wood, rubber, or leather.

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