JP7079098B2 - Speed alarm. - Google Patents

Description

The present invention relates to a speed alarm, and mainly relates to a swing training tool that enhances a human swing ability and a ball throwing ability using an instrument.

The following is a description of the first technical literature on swing practice in conventional sports.

JP 1997-075493 Swing measuring device Japanese Patent Laid-Open No. 2001-29525 Practicing tool for striking JP 2001-190727 Exercise training aircraft JP-A-2002-286565 Method for measuring impact force of golf ball and its device Japanese Patent Application Laid-Open No. 2008-125722 Golf club hit feeling evaluation method and device JP 2012-228351 Evaluation method of hit feeling JP 2016-22308 Swing measurement display system

The example described in the above-mentioned first-attack technical document is formed by a detection means that informs the practitioner of the hit of any bat ball that the practitioner wants to use in the batting practice by sound, feel, speed of hitting, and the like. It was not possible to easily measure the swing speed because it was a practice tool for hitting and a display system that measures the swing using the electric signals of the photoelectric sensor and the acceleration sensor.

Improving swing speed is an important ability of the athlete. Evaluation of this ability has been difficult to quantify until now. Because there was no suitable speed display system. Even if it was, it was not easy to handle because the equipment was large.

If anyone can easily know the improvement of the swing speed, the present inventor can set the goal of improving the swing speed and can devote himself to it by practicing. I thought that it was necessary to invent a speed alarm that anyone could easily know the swing ability.
It is an object of the present invention to provide a speed alarm that can notify the speed by itself, such as a golf club, a tennis racket, a badminton racket, a table tennis racket, a baseball bat, a baseball ball, etc., unlike conventional examples. And.

The first means of solving the problem is a speed alarm that informs the set swing speed, and the speed alarm is formed with a cavity extending in the axial direction, and is formed at an end portion of the cavity near the hand. Is characterized by the fact that one of the separable conjugates that separate into two is fixed by the centrifugal force of the set swing speed, and a passive body that receives the other detached conjugate is attached to the far end. It is a speed alarm.

The second means for solving the problem is the speed alarm according to claim 1, wherein the coupled body is composed of a strong magnet and a ferromagnet, or a plurality of strong magnets.

The speed notification according to claim 1 or 2, wherein the third means for solving the problem is configured such that the distance between the strong magnet and the ferromagnet of the coupled body before separation is adjustable by a screw. It is a vessel.

The speed alarm according to claim 1 or 2, wherein the fourth means for solving the problem is a sound source that emits a sound by the collision of the passive body.

The speed alarm according to claim 1 to 4, wherein the fifth means for solving the problem is that the speed measuring device is any one of a baseball bat, a golf club, a tennis racket, and a table tennis racket.

The speed according to claim 1 to 4, wherein the sixth means of solving the problem is that the hand of the swing training tool is a sphere, a cylinder extends in the axial direction from the sphere, and the combined body is housed in the cylinder. It is a notification device.

As the seventh means of solving the problem, a plurality of the speed measuring instruments described above are prepared, and the couplings in each speed measuring device are set so as to be separated by centrifugal force at a stepwise different swing speed. The speed alarm according to any one of 6.

The eighth means of solving the problem is a swing practice tool in which a plurality of speed measuring instruments described above are prepared, and the couplings in each speed measuring device are set to be separated by centrifugal force at stepwise different swing speeds. It is a speed alarm that displays the appearance of the vehicle in stages by color display, numerical display, or character display.

The ninth means for solving the problem is the speed alarm according to claim 1 to 8, which is provided with a fixing band attached to a foot or an arm.

According to the configuration of the speed alarm of the present invention, anyone can easily improve the swing speed of the tool in the ball game by himself / herself. It is also useful for improving not only hitting equipment but also throwing skills like a baseball ball. Furthermore, if this speed alarm is wrapped around the foot, it helps to improve the kicking speed when kicking a sucker ball. If the speed alarm of the present invention is used for group practice, it can be confirmed by sound that the swing speed has been reached step by step, so that anyone, including the supervisor, can easily confirm the improvement in ability. .. By using the speed alarm of the present invention to establish a certification and award system for skill improvement, it will be an encouragement for the skill improvement of the person.

FIG. 6 is a cross-sectional view of a speed alarm according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of the speed alarm according to the embodiment of the present invention after the shuttle is moved. The figure which built-in the speed alarm in the baseball bat in one Embodiment of this invention. The figure which built-in the speed alarm in the tennis racket in one Embodiment of this invention. The figure which built in the speed alarm in the golf club in one Embodiment of this invention. The figure which built-in the speed alarm in the table tennis racket in one Embodiment of this invention. The figure which built in the speed alarm in the baseball ball in one Embodiment of this invention. The figure which built-in the speed alarm in the wearing tool in one Embodiment of this invention. The figure which showed the speed display on the grip part of the sports equipment in one Embodiment of this invention. A table of the number of magnets, the interval, and the magnetic force in one embodiment of the present invention. The graph of the number of magnets, the interval and the magnetic force in one Embodiment of this invention. Table of velocity, shuttle, radius of gyration and centrifugal force in one embodiment of the present invention. Graph of velocity, shuttle, radius of gyration and centrifugal force in one embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 13.

FIG. 1 is a cross-sectional view of a speed alarm 10 according to an embodiment of the present invention. The speed alarm has a cavity 11 extending in the axial direction, an adjusting screw holding portion 13 having a ferromagnetic adjusting screw 12 inside the cavity 11, and a shuttle 15 having a strong magnet 14 built therein. Is coupled with the total thickness of the tip of the adjusting screw 12 and the end of the strong magnet 14 in the shuttle 15. The shuttle 15 has a structure that can be separated by the centrifugal force of the set swing speed. At the end 16 far from the hand, a passive body 17 for receiving the separated shuttle 15 is attached. The passive body 17 is provided with a receiving material 18 and a cushioning material 19. The distance between the strong magnet 14 and the adjusting screw 12 made of a ferromagnet is set to an appropriate distance of about 0.5 mm to 6 mm. This interval is the total thickness up to the tip of the adjusting screw 12 and the end of the strong magnet 14 in the shuttle 15. The adjusting screw 12 is rotated to insert and remove the screw, and the interval D is adjusted at the time of manufacture according to the set swing speed. The cushioning material 19 is made of a rubber-based material such as an O-ring to absorb the impact of the shuttle. However, the receiving material 18 has a structure of a hard member, and emits a pleasant sound due to the collision between the shuttle 15 and the receiving material 18. A neodymium magnet is used as the strong magnet 14. The magnetic force of the strong magnet 14 is adjusted according to the number of sheets used and the interval.

FIG. 2 is a cross-sectional view of the speed alarm 10 according to the embodiment of the present invention after the shuttle 15 has moved due to centrifugal force. Due to the centrifugal force of the set swing speed, the bond between the ferromagnet and the strong magnet is separated, and the shuttle 15 pops out and is received by the passive body 18.

FIG. 3 is a diagram in which a speed alarm 10 is built in a baseball bat 30 according to an embodiment of the present invention. The inside of the bat 30 is hollowed out, and the speed alarm 10 is fixed at an appropriate distance close to the tip of the bat 30. It has a structure fixed with screws.

FIG. 4 is a diagram in which a speed alarm 10 is built in a tennis racket 40 according to an embodiment of the present invention. The inside of the grip portion 41 at the hand of the tennis racket 40 is hollowed out to incorporate the speed alarm 10, and the speed alarm 10 has a structure fixed by screws in the vertical direction.

FIG. 5 is a diagram in which a speed alarm 10 is built in a golf club 50 according to an embodiment of the present invention. A pipe portion 52 for fixing the speed alarm 10 is formed at the other end of the grip 51 of the golf club 50, and the speed alarm 10 is provided inside the pipe portion 52. I have to.

FIG. 6 is a diagram in which a speed alarm 10 is built in a table tennis racket 60 according to an embodiment of the present invention. The inside of the grip portion 61 of the table tennis racket 60 is hollowed out, and the speed alarm 10 is built in. The structure is fixed with screws.

FIG. 7 is a diagram in which a speed alarm 10 is fixed to a baseball ball 70 according to an embodiment of the present invention. The baseball ball 70 has a hollowed-out structure, and the speed alarm 10 is fixed to the hollowed hole 71. The speed alarm 10 is fixed to the hole 71 using an adhesive or the like. The tip of the speed alarm 10 is provided with a ball-shaped spherical portion 72 for the purpose of preventing injury.

FIG. 8 is a diagram in which a mounting tool 80 according to an embodiment of the present invention having a speed alarm 10 built-in is mounted on a leg. By making the structure so that the speed alarm 10 can be attached to the leg portion, it can be useful for improving the leg strength of a ball game such as soccer that kicks a ball. As a method of fixing the fitting to the leg, a conventional means is used.

FIG. 9 is a diagram in which a plurality of baseball bats 30 having a built-in speed alarm 10 are prepared. The speed alarm 10 built into each baseball bat 30 is set so that the couplings are separated by centrifugal force at stepwise different swing speeds, and the baseball bat 30 prints the detachment speed 90 and the number 1 is 50 km. / h or more, No. 2 is 60 km / h or more, No. 3 is 70 km / h or more, No. 4 is 80 km / h or more, No. 5 is 90 km / h or more, No. 6 is 100 km / h or more, No. 7 is 110 km / h or more. , No. 8 is 120 km / h or more, No. 9 is 130 km / h or more, and if you look at the numbers displayed, you can easily confirm the departure at each swing speed by sound, so swing practice according to your physical strength is effective. Can be done. In the embodiment of FIG. 9, the number printing 90 is printed on the bat 10 from 1 to 5. It may be displayed in color instead of the number display, or both display methods may be used. FIG. 9 shows an example in which five bats 10 of the present invention are prepared, and there are 1 to 5 bats, and practice from 50 km / h or more to 90 km / h or more can be performed.

Incidentally, the average swing speed of the bat of the high school baseball team is 70 km / h, and the average swing speed of the leading high school baseball team is 80 km / h. There is also data that the average swing speed of a baseball team at a university is 90 km / h, the average swing speed of non-professional baseball is 95 km / h, and the average swing speed of a professional baseball team is 100 km / h. This swing speed data is used with reference to the swing speed measuring device developed by Phoenix Co., Ltd. in 1993. The above data are average values, and even though they are high school students, there are some who give a swing speed of 100 km / h or more. In professional baseball, some people have a swing speed of 110 km / h or more. However, it is rare for a person to produce a swing speed of 120 km / h or more, and it is a swing speed that can be achieved for the first time by an excellent athlete with a good physique through daily training.

In the game of baseball, the swing speed of the bat is a particularly important factor for the batter. If you can't get a swing speed of 100km / h or more, even if you hit the ball well, you won't fly to the distance to the home run zone. In the case of Koshien Stadium, the home run zone is designed so that the distance from the home base to both wings is 95 meters and the mid-sized ball is 118 meters, and if the height of the fence is included, the flight distance must be considerable. The conditions for a home run are that a fairly fast swing speed is required, that the ball hits the sweet spot of the bat well, and that the ball flies at an ideal angle.

FIG. 10 is provided in the speed alarm 10 according to the embodiment of the present invention, and is a table of the number of magnets, the interval, and the magnetic force. The number of built-in magnets was measured with two, three, and four magnets. The film thickness was displayed at intervals, and measurements were taken in 13 steps from 0 to 6.0 mm in 0.5 mm increments. A tensile tester with a digital display was used for the measurement. The peak value was adopted for each display. The pulling speed of the tensile tester was set to 50 mm / min for measurement. The unit of suction power is gram display.

FIG. 11 is a graph of the number of magnets, the interval, and the magnetic force in one embodiment of the present invention. It is a graph of three types with two magnets, three magnets, and four magnets.

FIG. 12 is a table of speed, shuttle, radius of gyration and centrifugal force in one embodiment of the present invention. In the bat 10 which is a swing body, the centrifugal force f = the pop-out force f is such that the rotation of the bat 10 separates the coupling between the adjusting screw 12 of the ferromagnet and the strong magnet 14. The centrifugal force of the rotating object is calculated by setting the position of the shuttle 15 as the position of the radius r of the rotating object. The pop-out force is proportional to the weight W of the shuttle 15. The radius R of the rotating body and the weight m of the shuttle 15 are determined, and the pop-out force f of the shuttle 15 for each swing speed is calculated by the following centrifugal force formula. f = mv2 / r or f = mrω2 is the formula of centrifugal force, and v = rω is derived from this formula. The speed from 40 km / h to 130 km / h at a position of m20 g of the shuttle 15 and a turning radius of 1 meter becomes 212 RPM to 690 RPM as shown in the figure when converted to the rpm of the rotating body. As shown in the figure, each pop-out force at this time is 100 g to 1066 g for a 20-gram shuttle.

The calculation for obtaining the centrifugal force f is a formula that appears in physics, and in the formula f is the centrifugal force, v is the velocity, and ω is the unit of the angular velocity. r is the radius. Angular velocity is expressed by the ratio of the unit of angle to the unit of time. For example, in the international unit system, the unit of angle is radian (rad) and the unit of time is second (s), so the unit of angular velocity is radian per second (rad / s). The Greek letters ω and Ω are often used as symbols for angular velocity.

FIG. 13 is a graph of speed, shuttle, radius of gyration and centrifugal force in one embodiment of the present invention. If it is used in the design with reference to the illustrated numerical values, it becomes easy to manufacture the speed alarm 10 built in the bat 10. However, the radius of gyration r differs depending on the physique of the swinging batter, and even for the same batter, it differs depending on whether the batter swings the internal angle or the external angle. Therefore, it is designed as if a person of average height swings a straight ball position. In the present invention, the standard radius r was set to 100 cm.

Hereinafter, how to use the speed alarm will be described using the baseball bat of FIG. The bat with a built-in speed alarm grips the grip of the bat and first stands vertically. By performing this work, the shuttle 15 is combined with the adjusting screw holding portion 13. The combined shuttle will not fall even if it is turned upside down. At first, swing a low-count bat. The lowest count is No. 1, and the bat on which this number is printed separates and pops out at a head speed of 40 km / h or more. If the shuttle pops out easily, it will move on to the next number. When you confirm that the shuttle will leave for the first time when you make a full swing, use that number of bats as your swing practice bat. There are several ways to swing. One of them is how many times a bat that has made a full swing can be made to make a full swing in a row. Repeat several sets a day with a goal of 10 to 20 full swings. If the shuttle pops out, you will hear a click so you can check it. The shuttle should stand vertically each time and fall back to its original position. The second method is to swing a lower count several tens of times than that count. In this case as well, it is necessary to decide the amount. Repeat several sets a day with a target swing of 30 times.
The third method is a mixture of the first and second introductions. If either finishes, rest for a few minutes and change the bat count. When it's done, rest for a few minutes. The interva practice method, which takes a few breaks in this way, is attracting attention as a method of scientifically and efficiently training the body. You can set the number of sets as you like, but you need to make a training holiday to recover your body muscles.

In addition, tennis, golf, and table tennis are the same as for baseball bats. Any ball game that has a grip and requires a swing speed can have this speed alarm built-in. Even if you can't set badminton at hand, you can set it at the end of the axis, so you can practice the same as described in the previous section.

Regarding increasing the speed display count, a count that cannot separate the shuttle three or more times in a row is a count that exceeds the current ability, and will hurt the body. It is important as a practice method to select one that can speak the shuttle 10 times or more in a row.

The faster you hit the badminton smash, the more aggressive it becomes, and it is a badminton flower shape that makes the audience excited. The way to hit the badminton smash at a high speed starts from reading the point where the ball falls while balancing with the non-dominant hand. Swing the racket big and shake it off at a high speed while imagining that energy is transmitted while rotating in order from the waist to the wrist. The smash speed measured by the badminton super series announced that it recorded a top speed of 408km / h for boys and 372km / h for girls. This is a measurement with a speed gun. It is said that it will decelerate to about 100km / h when entering the opponent's court because the wings are attached even at such a high speed.

Regarding the swing speed of the bat, there are several methods for measuring the swing speed, and it is necessary to know that even if the swing speed is the same, the numerical value to be expressed varies considerably depending on the measurement method. The first is a tip speed display method that measures with the tip of the bat. This is a classic method, but in the past, when there was only a method of video analysis, the time was calculated from the number of shot frames, and the distance of the trajectory of the bat that advanced during that time was calculated to calculate the swing speed. Currently, it can be measured from the cutoff time when the bat passes through two photoelectric sancers. However, although this method has the advantage of being able to measure correctly at the hitting point, it requires that the bat be perpendicular to the direction of travel. It is necessary to determine and correct the amount that deviates from the vertical angle with respect to the traveling direction. In 1995, the present inventor invented and applied for a method capable of automatically correcting such a defect regardless of the angle at which the bat enters. Incidentally, in the tip speed display method, the numerical value tends to be displayed as large as about 20% as compared with the hit point display method.

The hitting speed is an important index for evaluating the batter's ability. The pitching speed is also an important index of the pitcher's ability display. There is a radar gun that applies the Doppler effect, and the pitching speed can be easily measured. However, there is no easy way to know the hitting speed of a batter. Because sometimes the bat is spinning. Moreover, it is rotating while accelerating. Therefore, it can be said that it is difficult to measure the swing speed. The present invention is characterized by a method of measuring the centrifugal force and measuring the butt swing speed from the peak value of the centrifugal force to solve such a difficult problem.

To know the swing speed from the centrifugal force, it is necessary to know the physical formula well. The formula of f = mv2 / r shows that the smaller the radius, the larger the centrifugal force f. However, as calculated by the inventor, the centrifugal force f becomes smaller as the radius of gyration becomes smaller. However, this is not the case in reality. Because, if the radius of gyration is increased, the centrifugal force should be increased, but it is not easily increased. That is because one uses the same energy to constantly accelerate the mass of the bat. Increasing the radius decreases the angular velocity, and decreasing the radius increases the angular velocity. This means that even if the radius of gyration is slightly changed, the peak value of the batter's striking speed itself does not change significantly. Therefore, without worrying about the change in the radius of gyration r, it is sufficient to familiarize yourself with the physical law that the centrifugal force f has a direct proportional relationship with the swing speed v and to practice hard.

The problem of unreasonable leaders and stupid parents is common in sports training. Also known as guts and patience. There is a training method in which the player is made to shake the number of times or shake for a certain period of time because he / she gets better by the number of times he / she shakes. This is a common training method for group practice. A good player cannot grow up just by repeating the swings. It can be said that this is a teaching method that does not incorporate a scientific swing training method. The instructor wants an improvement method that can confirm some numerical value. However, large-scale equipment is not suitable. The speed alarm of the present invention can easily provide a scientific sports training means that anyone can practice, for the sports world where there is no means or method for confirming numerical values at present. be.

There are words of educational method for hitting, such as "look at the ball and hit it", "cut the waist", and "do not move the head". There are few coaches who say "Full swing". It is difficult to hit the ball with a full swing, so if you want to hit it, this is fine. However, many players have become famous for their full swing strikes. The manager wins because it becomes a strategy to win the team. On the other hand, players want to show spectacular extra-base hits and home runs. The ideal is a match between the players and the manager. For that purpose, the players must have the ability to be the best here. It is most important for athletes to aim to power up their full swing power first. As a means of achieving this goal, a method for efficiently confirming the power-up of the full swing is required.

Regarding modern muscle training, in Bodyville, it is said that it is good to use barbells and iron arrays that can be lifted 12 to 15 times in a row. The same is true for various machine trainings. Muscles develop when adjusted to an addition that can be performed 12 to 15 times in a row. What can be said from this muscle training theory is that a bat with an appropriate load, that is, a bat with a swing speed notification function of the present invention, can be practiced because the number of swings may be smaller than repeating swinging at the same swing speed hundreds of times. It can be said that it is good to use.
For the suggestion of a high-speed swing method for the metal bat of amateur baseball. As a method of increasing the bat swing force of baseball, a method of swinging a heavy bat is used.

In baseball, a bat weight of around 900 to 920 grams is often used. On the other hand, shake about 1100 grams. This is said to be a good method because if you swing a heavy bat, it feels light when you swing a normal bat. Sure, your body will feel that way, but it's a big question if you can swing at high speeds. You must know what percentage of the weight gain will affect the slowdown. The following is what is calculated by a general physics formula.

If f = mV2 squared f is constant and m is multiplied by 1.22, V is obtained by dividing by the root times. m ÷ 1.1 = 0.909 times. That is, a bat with a bat weight of 900 grams and a person capable of swinging at a maximum speed of 100 km / h when the weight is increased by 22 percent will have a bat speed of 90 km / h. It should be 81km / h for those with 90km / h, 72km / h for those with 80km / h, and 63km / h for those with 70km / h. However, the opposite is not true. This is because you can understand it by actually swinging a bat with a bat weight of 150 grams. Even with a bat weight of 1/6 or less, it is very difficult and impossible to swing at double speed or triple speed.

However, a child with a bat weight of 150 grams gives the same swing speed as an adult, but when the weight is added, the child drops rapidly. This is the big difference between adults and children.

The bat is a smooth round rod, and the diameter of the thickest part is 6.6 cm or less, and the length is 106.7 cm or less. However, the metal bat for amateur baseball has a weight regulation that professional baseball does not have, and it is said to be 900g or more. No matter how light the bat is, it cannot be made lighter.

The speed alarm of the present invention can contribute to improving the swing speed of a player in a ball game. It can contribute to the development of the equipment industry in ball games.

10 Speed alarm 11 Cavity 12 Adjusting screw of ferromagnetic material 13 Adjusting screw holding part 14 Strong magnet 15 Shuttle 16 End part far from hand 17 Passive body 18 Receiving material 19 Cushioning material 30 Bat 40 Tennis racket 41 Grip part 50 Golf club 51 Grip part 52 Pipe part 60 Table tennis racket 61 Grip part 70 Baseball ball 71 Hole 72 Ball part 80 Equipment 90 Number printing D Interval

Claims (3)

A sports ball-type speed alarm including a speed alarm for notifying a set swing speed and a sports ball , wherein the speed alarm is inserted into a hole provided in the ball and the speed alarm is provided. A part of the ball is attached so as to be exposed to the outside of the ball, and the speed alarm has a cavity extending in the axial direction at one end of the cavity. Is fixed to one of the separable conjugates that separate into two by the centrifugal force of the set swing speed, and a passive body that receives the other detached conjugate is attached to the other end of the cavity. A ball-shaped speed alarm for sports, which is characterized by being present. The sports ball-shaped speed alarm according to claim 1, wherein the distance between the strong magnet and the ferromagnet of the coupled body is adjustable by a screw . The sports ball-shaped speed alarm according to any one of claims 1 and 2, wherein the passive body is a sound source that emits a sound due to a collision of the coupled bodies .

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