JP2019122478A - Speed detector - Google Patents

Abstract

To solve the problem that concerning a method for improvement of hitting and pitching ability on sports, various instruments have been developed, but no instruments that everyone can use easily have been developed.SOLUTION: A speed detector for notifying of a set swing speed is formed with a cavity extending in an axial direction. One of a coupling body that can be separated into two by centrifugal force of the set swing speed is fixed to a closer end part in the cavity, and a passive body for receiving the other separated coupling body is attached to a distant end part.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a speed annunciator, and more particularly to a swinging exerciser that enhances human swinging ability and ball throwing ability using the device.

  Hereinafter, prior technical literature on swing practice in conventional sports will be described.

JP, 1997-075493 Swing measurement device Japanese Patent Application Publication No. 2001-29525 JP, 2001-190727, exercise exercise machine Patent application title: Method and apparatus for measuring impact force of golf ball Patent application title: Method and apparatus for evaluating hit feeling of golf club JP 2012-228351 Evaluation method of hitting feeling JP, 2016-22308, Swing measurement display system

  The example described in the above-mentioned prior art technical literature is formed by a detection means that informs the trainee that the ball of any bat that the trainee wants to use hits in batting practice, by sound, feel, hitting speed, etc. However, the swing speed can not be measured easily because it is a batting training tool or a display system that measures a swing using an electrical signal of a photoelectric sensor or an acceleration sensor.

  The improvement of the swing speed is an important ability of the competitor. Evaluation of this ability has been difficult to quantify until now. Because there was no suitable speed indication system. Even if there were any devices, they were not easy to handle.

If the present inventor can easily know the improvement of the swing speed, the target of the improvement of the swing speed can be achieved and can be driven by practice. We thought that it was necessary to invent a speed indicator that everyone knew the swing ability simply.
The present invention is different from the conventional example, and it is an object of the present invention to provide a speed annunciator capable of informing the speed by itself such as a golf club, tennis racket, badminton racket, table tennis racket, baseball bat, baseball ball, etc. I assume.

  A first means for solving the problem is a speed annuncior that notifies a set swing speed, and the speed annunciator has an axially extending cavity formed therein, and is provided at an end near the hand inside the cavity. Is characterized in that one of the separable couplings separated into two is fixed by the centrifugal force of the setting swing speed, and a passive body that receives the other coupling separated is attached at the far end. This is a speed indicator.

  A second means for solving the problem is the speed annunciator according to claim 1, characterized in that the combination is constituted by a strong magnet and a ferromagnetic body or a plurality of strong magnets.

  The speed information according to any one of claims 1 to 2, wherein a third means for solving the problem is characterized in that the distance between the strong magnet and the ferromagnetic body of the combination before separation is adjustable by a screw. It is

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

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

  The sixth means for solving the problem is the speed according to any one of claims 1 to 4, wherein the hand of the swinging exerciser is a sphere, a cylinder extends axially from the sphere, and the combination is accommodated in the cylinder. It is an alarm.

  A seventh means for solving the problem is provided with a plurality of the velocity measuring devices described above, and the combination in each velocity measuring device is set to be separated by centrifugal force at different swing speeds stepwise. 6 is the speed indicator according to any of 6;

  According to an eighth means of the present invention, there is provided a swinging exerciser wherein a plurality of the velocity measuring devices described above are prepared, and a combination in each velocity measuring device is set apart by centrifugal force at different swing speeds stepwise. This is a speed indicator that displays the speed of leaving the appearance in color display or numeric display, and character display in stages.

  A ninth means for solving the problem is the speed indicator according to any one of claims 1 to 8, wherein a fixing band attached to a foot or an arm is provided.

  According to the configuration of the speed annunciator of the present invention, it is possible for anyone to easily improve the swing speed of the tool in the ball game by oneself alone. In addition to striking tools, it also helps improve throwing skills like baseball balls. Furthermore, winding this speed indicator around the foot helps to improve the kicking speed when kicking the soccer ball. If the speed indicator of the present invention is used for group practice, it can be confirmed by sound that the swing speed has reached in stages, so that everyone, including the supervisor, can easily confirm the improvement in ability without fail . By establishing a system for recognition of skill improvement and an award system using the speed indicator of the present invention, it is possible to encourage the improvement of the skill of the person.

Sectional drawing of the speed indicator in one Embodiment of this invention. Sectional drawing after shuttle movement of the speed indicator in one embodiment of the present invention. The figure which incorporated the speed indicator into the baseball bat in one Embodiment of this invention. The figure which incorporated the speed indicator into the tennis racket in one embodiment of the present invention. The figure which incorporated the speed indicator in the golf club in one Embodiment of this invention. The figure which incorporated the speed indicator into the table tennis racket in one embodiment of the present invention. The figure which incorporated the speed indicator into the baseball in one Embodiment of this invention. The figure which incorporated the speed indicator into the mounting tool in one Embodiment of this invention. The figure which displayed the speed on the grip part of the sports equipment in one Embodiment of this invention. The table | surface of the number of magnets, space | interval, and magnetic force in one Embodiment of this invention. The graph of the number of magnets, space | interval, and magnetic force in one Embodiment of this invention. A table of speed, shuttle, radius of rotation and centrifugal force in an embodiment of the present invention. The graph of the speed, shuttle, rotation radius, and centrifugal force in one embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described based on FIGS. 1 to 13.

  FIG. 1 is a cross-sectional view of a speed indicator 10 in an embodiment of the present invention. In the speed indicator, an axially extending cavity 11 is formed, and the cavity 11 is provided with an adjusting screw holding portion 13 having an adjusting screw 12 of ferromagnetic material, and a shuttle 15 incorporating a strong magnet 14 And the tip of the adjusting screw 12 and the thickness to the end of the strong magnet 14 in the shuttle 15 are joined at a total distance. The shuttle 15 is a structure that can be separated by a centrifugal force at a set swing speed. At the end 16 far from the hand, a passive body 17 is attached to receive the separated shuttle 15. The passive member 17 is provided with a receiving material 18 and a shock absorbing material 19. The distance between the strong magnet 14 and the adjusting screw 12 made of ferromagnetic material is set to a suitable distance of about 0.5 mm to 6 mm. This distance is the total thickness of the tip of the adjusting screw 12 and the end of the strong magnet 14 in the shuttle 15. The adjustment screw 12 is rotated to put the screw in and out, and the interval D is adjusted at the time of manufacture according to the set swing speed. The shock absorbing material 19 is made of a rubber-based material such as an O-ring, and absorbs the impact of the shuttle. However, the support 18 is a structure of a hard member, and emits a pleasant sound due to the collision of the shuttle 15 and the support 18. The strong magnet 14 uses a neodymium magnet. The magnetic force of the strong magnet 14 is adjusted by the number and interval of use.

  FIG. 2 is a cross-sectional view after the shuttle 15 of the speed annunciator 10 according to an embodiment of the present invention is moved by centrifugal force. By the centrifugal force of the set swing speed, the coupling between the ferromagnetic body and the strong magnet is released, the shuttle 15 is ejected, and is received by the passive body 18.

  FIG. 3 is a view of the bat 30 of a baseball according to an embodiment of the present invention in which the speed indicator 10 is incorporated. The inside of the butt 30 is hollowed and the speed annunciator 10 is fixed at a suitable distance from the tip end of the butt 30 in the vertical direction so that the speed annunciator 10 does not come out even if centrifugal force is applied. The structure is fixed by screws.

  FIG. 4 is a diagram in which the speed indicator 10 is incorporated in the 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 and the speed annunciator 10 is built-in, and the speed annunciator 10 has a structure in which the screw is fixed in the vertical direction.

  FIG. 5 is a view in which the speed indicator 10 is incorporated in the golf club 50 in an embodiment of the present invention. At the other end of the grip 51 of the golf club 50, a pipe portion 52 for fixing the speed annunciator 10 is formed, and the speed annunciator 10 is provided in the inside thereof. I have to.

  FIG. 6 is a view of the table tennis racket 60 according to the embodiment of the present invention in which the speed indicator 10 is incorporated. It is the figure which hollowed the inside of the grip part 61 of the table tennis racket 60, contained the speed indicator 10, and it is set as the structure fixed with a screw.

  FIG. 7 is a diagram in which the speed indicator 10 is fixed to the baseball 70 according to an embodiment of the present invention. The baseball ball 70 is hollowed out and the speed indicator 10 is fixed to the hollow hole 71. The speed indicator 10 is fixed to the hole 71 using an adhesive or the like. A ball portion 72 formed in a ball shape is provided at the tip of the speed annunciator 10 for the purpose of preventing injury.

  FIG. 8 is a view showing the mounting tool 80 according to an embodiment of the present invention, in which the speed indicator 10 is built in, attached to the leg. The structure in which the speed indicator 10 can be attached to the legs can be used to improve the leg strength of a ball game that kicks a ball such as soccer. The method of securing the mounting tool to the legs uses conventional means.

  FIG. 9 is a diagram in which a plurality of baseball bats 30 incorporating the speed annunciator 10 are prepared. The speed annunciator 10 incorporated in each baseball bat 30 is set so that the combined body is separated by centrifugal force at stepwise different swing speeds, and the baseball bat 30 has a separation speed of 50 km for No. 1 of the number print 90. / h or more, No. 2 is more than 60 km / h, No. 3 is more than 70 km / h, No. 4 is more than 80 km / h, No. 5 is more than 90 km / h, No. 6 100 km / h or more, and No. 7 is more than 110 km / h If you look at the numbers displayed on the numbers, such as No. 8, 120 km / h or more and No. 9, 130 km / h or more, it is possible to easily confirm the departure at each swing speed by sound, so the swing practice according to the physical strength is effective Can be In the embodiment of FIG. 9, the number print 90 is printed on the butt 10 from 1 to 5. Instead of number display, color display may be used, or both display methods may be used. FIG. 9 shows an example in which five bats 10 according to the present invention are prepared. The bats from No. 1 to No. 5 can practice from 50 km / h to 90 km / h.

  By the way, the average swing speed of the high school baseball team bat is 70 km / h, and the average swing speed of the high school baseball team is 80 km / h. The average swing speed of the baseball team at university is 90 km / h, the average swing speed of non-professional baseball is 95 km / h, and the average swing speed of the professional baseball team is 100 km / h. The swing speed data is obtained by using a swing speed measuring device developed by Phoenix Co., Ltd. in 1993 and used as a reference. The above data are averages, and some high-school students, but some have a swing speed of over 100 km / h. In professional baseball, there are also those who give a swing speed of 110 km / h or more. However, those who give a swing speed of 120km / h or more are rare, and it is the swing speed that can be achieved only by the daily training of excellent athletes with good physique.

  In baseball games, bat swing speed is a particularly important factor for the batter. If you can not get a swing speed of 100km / h or more, even if you hit the ball well, you will not fly to the distance to the home run zone. In the case of the home run zone, in the case of the Koshien Stadium, the distance from the home base to both wings is designed to be 95 meters, and the midsize 118 meters, and if it includes the height of the fence, it must take a considerable distance. Home run conditions include the need for relatively fast swing speeds, the ability to hit the sweet spot of the bat well, and the ability to fly with an ideal angle trajectory.

  FIG. 10 is a table of the number of magnets, the interval, and the magnetic force, which is provided in the speed notification device 10 according to an embodiment of the present invention. The number of embedded magnets was measured in two, three and four. The film thickness is indicated by intervals, and 13 steps from 0 to 6.0 mm were measured in 0.5 mm steps. The measurement used the tensile tester of a digital display. Each display adopted peak value. The pulling rate of the tensile tester was measured at a setting speed of 50 mm per minute. The unit of suction is in grams.

  FIG. 11 is a graph of the number of magnets, the distance, and the magnetic force in an embodiment of the present invention. It is three types of graphs in the number of magnets 2, 3 and 4.

  FIG. 12 is a table of speed, shuttle, radius of rotation and centrifugal force in an embodiment of the present invention. As for the bat 10 which is a swing body, the centrifugal force f = the jumping force f separates the coupling between the ferromagnetic adjustment screw 12 and the strong magnet 14 due to the rotation of the bat 10. The centrifugal force of the rotating object is calculated by using the position of the shuttle 15 as the position of the radius r of the rotating object. The launch force is proportional to the weight W of the shuttle 15. Once the radius R of the rotating body and the weight m of the shuttle 15 are determined, the flying force f of the shuttle 15 for each swing speed can be obtained by the following formula of centrifugal force. f = mv 2 / r or f = m r ω 2 is the formula of the centrifugal force, from which v = r ω is derived. The speed from 40 km / h to 130 km / h at a position of m20 g of the shuttle 15 and a radius of 1 meter is 212 RPM to 690 RPM as illustrated, when converted to RPM of the rotating body per minute. At this time, as shown in the drawing, each 20-gram shuttle has a jump-out force of 100 to 1066 grams.

  The calculation for obtaining the centrifugal force f is a formula that appears in physics, where f is the centrifugal force, v is the velocity, and ω is the unit of the angular velocity. r is a radius. The angular velocity is represented by the ratio of the unit of angle to the unit of time. For example, in the International System of Units, 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). Greek letters ω and Ω are often used as symbols representing angular velocity.

  FIG. 13 is a graph of speed, shuttle, radius of rotation and centrifugal force in an embodiment of the present invention. By using the illustrated values as a reference in the design, the manufacture of the speed annunciator 10 incorporated in the bat 10 becomes easy. However, the turning radius r is different depending on the size of the batter who swings, and the same batter also differs in swinging the inner angle and the outer angle. Therefore, a person of average height is designed as swinging a straight ball position. In the present invention, the standard radius r is 100 cm.

Hereinafter, how to use the speed indicator will be described using the baseball bat shown in FIG. The speed indicator's built-in bat first grips the bat's grip and stands upright first. By performing this operation, the shuttle 15 is united with the adjustment screw holding portion 13. The combined shuttle does not fall when turned upside down. At first, swing a bat with a low count. The lowest count is No. 1, and the bat printed with this number separates and flies out at a head speed of 40 km / h or more. If the shuttle jumps out easily, proceed to the next count. The first time you make sure that the shuttle will leave when you swing full swing, make that bat your swing practice bat. There are several swing methods. One of them is how many consecutive swings the full swing bat can be made to swing. Repeat several sets a day, with 10 to 20 full swings as goal. If the shuttle jumps out, it will make a rattling sound so it can be confirmed. The shuttle should stand vertically once and fall at a time. The second method is to swing a few dozen times lower than the number. Also in this case, 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 introduced and the second introduced. If either ends, rest for a few minutes and change the bat count. I will rest for a few minutes when it is finished. In this way, the practice of interba practice which takes several breaks has attracted attention as a method of efficiently training the body scientifically. The number of sets should be set freely, but it is always necessary to create a training holiday to recover the muscles of the body.

  In addition, tennis, golf and table tennis are the same as in baseball bats. Any ball game that has a grip and requires a swing speed can incorporate this speed indicator. Since badminton and the like can be set at the axial end even if they can not be set at hand, the same practice as described in the preceding paragraph may be performed.

  With regard to raising the speed indicator, the number that can not separate the shuttle three or more times in a row will hurt the body as it is more than the current ability. It is important as a practice method to select one that can speak the shuttle ten or more times in a row.

  Badminton smash is the one that can be said to be a badminton flower form that makes the audience more aggressive as you hit it faster. The method of hitting the speed of badminton smash starts from reading the falling point of the ball while keeping balance with the non-dominant one. Shake the racket at high speed while imaging that energy is transmitted while rotating from the waist to the wrist in order. It was announced that the smash speed measured by the badminton super series recorded a top speed of 408 km / h for boys and 372 km / h for women. This is a measurement with a speed gun. Since the blades are attached even at such high speed, it is said that the speed will be reduced to about 100 km / h when entering the opponent's court.

  It should be noted that there are several types of measurement methods of the swing speed regarding the swing speed of the bat, and it is necessary to know that the numerical values to be expressed are considerably changed by the measurement method even with the same swing speed. The first method is a tip speed display method of measuring at the tip of the bat. This is a classical method, but when there was only an image analysis method in the past, time was calculated from the number of frames taken, and the distance of the trajectory of the bat advanced during that time was calculated to calculate the swing speed. Currently, it can be measured from the shutoff time when the bat passes through two photoelectric sensors. However, although this method has the advantage that it can be measured correctly at the hitting point, the condition is that the bat is perpendicular to the traveling direction. With respect to the direction of travel, the deviation of the angle from the perpendicular must be determined and corrected. The inventor of the present invention invented and filed in 1995 a method capable of automatically correcting what degree the bat intrudes at any angle. Incidentally, the tip speed display method tends to display a numerical value as large as about 20% as compared with the hit point display method.

  The impact speed is an important indicator to evaluate the batter's ability. Pitching speed is also a key indicator of the pitcher's ability. The pitching speed can be easily measured by using a radar gun that applies the Doppler effect. However, there is no way to easily know the hit speed of the batter. Because the bat is rotating. And it is rotating while accelerating. This makes it difficult to measure the swing speed. The present invention is characterized in such a difficult problem by measuring the centrifugal force and measuring the bat swing speed from the peak value of the centrifugal force.

  To know the swing speed from centrifugal force, you need to know the physical formula well. The formula f = mv squared / r indicates that the centrifugal force f increases as the radius decreases. However, as calculated by the inventor, the smaller the radius of rotation, the smaller the centrifugal force f. But in reality it is not. This is because if the radius of rotation is increased, the centrifugal force should be increased, but not easily. That is because one always uses the same energy to accelerate the mass of the bat. Increasing the radius decreases the angular velocity, and decreasing the radius increases the angular velocity. As a result, even if the turning radius is slightly changed, the peak value of the hitting speed of the batter itself does not greatly change. Therefore, it does not matter if the rotational radius r changes, and it is recommended to practice well knowing the physical law that the centrifugal force f is in direct proportion to the swing speed v.

  The problem of unreasonable leaders and stupid parents often occurs in sports training. It is also said that nature and patience. There is a training method of shaking for a certain period of time, letting the player shake only a number of times, as it gets better only the number of times of shaking. This is a common practice for group practice. A good player can not be brought up by simply repeating the gesture. This is a teaching method that does not incorporate scientific swing training methods. The instructors want some improvement methods that can confirm some figures. However, large-scale devices are not suitable. For the sports world where there has been no means or method to confirm numerical values at present, the speed indicator of the present invention can provide scientific sports training means that anyone can easily practice. is there.

  There are words of the teaching method to hit, such as "look at the ball carefully and hit", "a piece of the waist" and "without moving your head". There are few coaches who say "Please swing full." Since it is difficult to hit the ball in a full swing, this is fine if you aim to hit it. However, there are many players who became famous for full swing batting. The coach is likely to be the tactic to win the team. On the other hand, players will want to show spectacular long runs and home runs. The ideal is a match between the players and the director. In order to do that, players have to be able to get the best out there. It is most important for players to aim for full swing power ups first. As a means for achieving this purpose, a method for efficiently checking the full swing power-up is required.

With regard to modern muscle training, it is said that in bodybuilding it is better to use a barbell or iron array that can be lifted 12 to 15 times in a row. The same is true for various machine trainings. The muscles develop when adjusted to add 12 to 15 times in a row. What can be said from this muscle training theory is that the bat with an appropriate load, that is, the bat with the swing speed notification function according to the present invention, can be practiced because it may be fewer times than repeating swinging at the same swing speed hundreds times. It can be said that it is good to use.
About the proposal of the metal bat high speed swing method of amateur baseball. A method of swinging a heavy bat is used as a method of raising the bat swing power of baseball.

  In baseball, bat weights around 900 to 920 grams are often used. On the other hand, shake about 1100 grams. This is considered to be a good method from swinging a heavy bat and feeling light when swinging a regular bat. Certainly the body will feel that way, but it is a great question if you can swing fast. We have to know how much a 22 percent weight increase would be the effect of a percent speed reduction. What is required by a general physical formula is shown below.

  f = mV squared If f is constant, if m is multiplied by 1.22, V is obtained by dividing it by its root multiple. m ÷ 1.1 = 0.909 times. That is, if the bat weight is 900 grams and the weight is increased by 22 percent, the bat speed is 90 km / h if the person swings at a maximum speed of 100 km / h. If it is 90km / h, it should be 81km / h, if it is 80km / h, 72km / h and if it is 70km / h, it should be 63km / h. However, the reverse is not true. This is because the bat weight of 150 grams can actually be understood by swinging it. It can not be very difficult to swing at double speed or triple speed even with a bat weight of 1⁄6 or less.

  However, children with bat weights of 150 grams will swing as fast as adults, but with the addition of weight the children will fall rapidly. This is a big difference between adults and children.

  The bat is a smooth round bar whose thickness is determined to be 6.6 cm or less in diameter and 106.7 cm or less in length. However, metal bats for amateur baseball have a rule of weight that professional baseball does not have, and they are 900 g or more. No matter how light the bat is, it can not be reduced further.

  The speed indicator 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.

DESCRIPTION OF SYMBOLS 10 Speed alarm 11 Cavity 12 Adjustment screw 13 of ferromagnetic material Adjustment screw holding part 14 Strong magnet 15 Shuttle 16 End part 17 away from the hand 17 Passive body 18 Receiving material 19 Buffer material 30 Butt 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 Accessories 90 Number print D distance

Claims (9)

   A speed indicator for notifying a set swing speed, wherein the speed notification device is formed with a cavity extending in the axial direction, and a centrifugal force of the set swing speed at an end near the hand in the cavity. A speed annunciator characterized in that one of the separable combinations separated by two is fixed and at the far end is attached a passive body that receives the other separated combination.    The speed annunciator according to claim 1, wherein the combined body is composed of a strong magnet and a ferromagnetic body or a plurality of strong magnets.    The speed annunciator according to any one of claims 1 to 2, wherein the distance between the strong magnet and the ferromagnetic body of the combined body is adjustable.    The speed indicator according to any one of claims 1 to 3, wherein the passive body is a sound source that emits a sound by a collision of the combined body.    The speed indicator according to any one of claims 1 to 4, wherein the speed indicator is any one of a baseball bat, a golf club, a tennis racket, a table tennis racket, a racket for lacrosse, a badminton racket and a table tennis racket. .    The speed annunciator according to any one of claims 1 to 5, wherein a hand of the speed annunciator is a sphere, and a cylinder axially extends from the sphere, and the combined body is accommodated in the cylinder.   The speed annunciator according to any one of claims 1 to 6, wherein a plurality of the speed annunciators are prepared, and a combination in each speed annunciator is set so as to be separated by centrifugal force at different swing speeds stepwise.   The speed indicator according to claim 7, wherein the speed indicator is color-coded or distinguished by letters in correspondence with the different swing speeds. 9. A speed annunciator as claimed in any one of the preceding claims, wherein a fixing band is provided for attachment to the foot or arm.

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