JPH04309382A - Ball hitting action training machine - Google Patents

Abstract

PURPOSE:To constitute the training machine so that a person to be tested can execute correctly a check of a ball hitting action by looking at a difference between a set moving locus being an ideal locus of a load center and a position of an actual load center, in the ball hitting action training machine provided with a base on which the person to be tested who holds a ball hitting implement with hands and executes a ball hitting action gets, a load measuring means for measuring the load center applied to this base, a storage means for storing measured data from the load measuring means in the ball hitting action, and a display device for displaying the measured data on a two-dimensional coordinate. CONSTITUTION:The training machine is provided with a first display means for displaying a set moving locus L2 of the load center stored in advance on a display device 4, a second display means for superposing the position of the load center at the present time point in the ball hitting action on the set moving locus L2 as a point P1 and displaying it on the display device 4, and a third display means for superposing a moving locus L3 of the load center extending to the past by a set time from the present time point in the measured data, stored in the storage means on the set moving locus L2, and displaying it on the display device 4.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball batting motion training device for practicing hitting a ball with a club, bat, etc. in sports such as golf and baseball.

0002

2. Description of the Related Art One of the above-mentioned ball batting motion training machines is a golf ball batting motion training machine, and an example of this golf ball batting motion training machine is shown in FIG. This ball-striking motion training machine uses a club (an example of a ball-striking tool) as shown in Figure 10.
A platform 11 on which a test subject (not shown) is placed who performs a ball-striking motion while holding a ball (not shown) in his hand, a load measuring means (not shown) for measuring the center of the load applied to this platform 11, and a load measuring means for the ball-striking motion. The display device 4 includes a storage means (not shown) for storing measurement data from the sensor, and a display device 4 for displaying the measurement data on two-dimensional coordinates. As a result, when the subject performs a ball-striking motion, the position of the load center from the start to the end of the ball-striking motion is continuously memorized, and the locus of movement of this load center is displayed as a single curve on the two-dimensional coordinates of the display device. Is displayed. The test subject then looks at the locus of movement of this load center and judges whether his or her batting action is good or bad.

[0003] With this ball batting motion training machine, the following things can also be done. In other words, among the movement trajectories of previous ball batting movements, the movement trajectory that the subject thinks is good is stored in the storage means,
For example, this movement trajectory L4 (corresponding to the set movement trajectory) is shown in FIG.
It is displayed in advance on the display device 4 as shown in FIG. Then, the current position of the center of the load applied to the platform 11 is displayed as a point P1 on the display device 4 in real time, superimposed on the movement trajectory L4. As a result, the subject holds the club on the table 11 shown in FIG. 10, and while visually viewing the display device 4 performs a swinging motion a little slowly to achieve the target movement trajectory L.
By moving the point P1 as if tracing 4, it is possible to check the difference between the previous good ball hitting motion and the current ball batting motion in each part of the ball batting motion.

0004

[Problem to be Solved by the Invention] In the above-mentioned ball batting motion training device, when performing a missed swing motion, the current position of the load center is displayed as point P1 as shown in FIG. Due to the difference from the trajectory L4, the subject can only recognize the current state of a portion of the batting motion. However, the ball-hitting motion in golf, baseball, etc. does not pause, but rather has a continuous flow, so when checking the ball-striking motion by making a missed swing, only a portion of the current moment is used. If the ball hitting motion cannot be checked, the subject may not be able to check the ball hitting motion correctly, and there is room for improvement in terms of allowing the ball hitting motion to be checked more correctly. SUMMARY OF THE INVENTION An object of the present invention is to provide a ball-striking movement training device as described above, in which the ball-striking movement can be checked more accurately because the ball-striking movement is missed.

[0005]

[Means for Solving the Problems] A feature of the present invention is that the above-described ball batting motion training machine is constructed as follows. In other words, [1] a first display means for displaying a pre-stored set movement trajectory of the load center on a display device; and a first display means for displaying a set movement trajectory of the load center stored in advance on the display device, and a display device that displays the current position of the load center in the ball batting operation as a point superimposed on the set movement trajectory. a second display means for displaying, and a third display means for displaying, on a display device, a movement locus of the load center over a set time period from the present time in the past in the measurement data stored in the storage means, superimposed on the set movement locus. We are prepared.

[2] In the configuration of the previous item [1], a time changing means is provided for changing the setting time for the past movement trajectory.

[3] In the configuration of the previous item [1] or [2], a trajectory changing means for changing the set movement trajectory is provided.

[0008]

[Function] [A] With the configuration as described in the previous item [1], for example, as shown in FIG. The position is displayed as point P1. In this case, since the measurement data of the load center prior to the current time is also stored in the storage device, the measurement data stored in the storage device that extends from the current time to the past for the set time will be They are simultaneously displayed on the display device 4 as the movement trajectory L3. As a result, by looking at the display device, the subject can see the difference between the current position of the load center and the set movement trajectory, as well as the movement trajectory of the load center from a past point in time to the present moment (past movement trajectory). This allows you to recognize whether you have followed L3).

[0009] When performing the above-described ball-hitting motion, it is conceivable to display the entire movement trajectory from the start of the ball-hitting motion to the present time on a display device, superimposed on the set movement trajectory. However, when checking such ball-striking motions, the subject repeats detailed ball-striking motions many times near important points (for example, in golf, the point of entry into the backswing or the point of impact). Since there are times when the user has to check the information, if all past movement trajectories are displayed as described above, the display device becomes very difficult to view. On the other hand, in the present invention, the past movement locus is displayed for a set time from the present time, and the past movement locus from the present time for more than the set time is sequentially erased from the display device, so that the display device becomes difficult to see. There isn't.

[B] With the configuration as described in the previous item [2], the setting time for setting the past movement locus can be arbitrarily changed to be longer or shorter. Thereby, the length of the past movement locus L3 shown in FIG. 1 can be changed to a desired length depending on the situation of the ball hitting operation.

[C] With the configuration as described in the previous item [3], when checking another ball-striking motion, it is possible to change the set movement trajectory to correspond to the other ball-striking motion.

0012

[Effects of the Invention] When configured as claimed in claim 1, when checking the ball hitting motion, not only the difference between the current load center position and the set movement trajectory but also the difference between the set time from the past point to the present time can be checked. Since it becomes possible to visually recognize the moving trajectory of the center of load, the subject can recognize the long range of the ball-striking motion from the past to the present moment in the series of ball-striking motions. will be able to more accurately check the batting action. In this case, an unnecessarily long range of past movement trajectories is not displayed, so there is no problem that the display device becomes difficult to view.

[0013] In the case of the second aspect of the present invention, since the length of the past locus of movement can be adjusted according to the situation of the ball-striking motion, it becomes easier to check the ball-striking motion.

[0014] In the case of the configuration as claimed in claim 3, since the stored set movement locus can be changed to another set movement locus, it is also possible to check another ball hitting motion. , the range of use of this batting action training device is expanded.

[0015]

Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings. FIG. 7 shows a ball batting motion training machine for golf, which is an example of a ball batting motion training machine. This ball batting motion training machine for golf includes a load measuring device 1 (corresponding to a load measuring means), a tee stand 2, a processing device 3 containing a storage device 17 (see FIG. 8), and a display device 4. . This ball batting motion training device processes the measurement data of the load measuring device 1 during the swing (corresponding to the batting motion), stores it as load or load center data, and displays it on the display device 4 after the swing. Each device will be explained below.

As shown in FIGS. 5, 6, and 8, the load measuring device 1 is equipped with a stand 11 on which a subject stands, and four load cells 12, 13, 14, and 15 that support this stand 11. A subject takes a swing while holding a club C (corresponding to a ball hitting tool) on the table 11. At this time, the load applied to the table 11 is detected by the four load cells 12 to 15, and the load and the load center are determined based on this measurement data.

The tee stand 2 is equipped with a support 6 for supporting a ball 5 (corresponding to a ball). The tee stand 2 includes a ball presence/absence sensor 7 that detects whether the ball 5 is present on the support 6 and a club presence/absence sensor 7 that detects whether the head of the club C is located next to the support 6. A sensor 8 is arranged. The ball presence/absence sensor 7 and the club presence/absence sensor 8 are reflection type optical sensors incorporating a light emitter and a light receiver.

Next, the load detected on the table 11 and the calculation of the load center will be explained. The subject holding the club C stands approximately in the center of the table 11 of the load measuring device 1 and takes a stance as shown in FIGS. 5 and 6. The outputs of the load cells 12 to 15 located at the four corners of the load measuring device 1 are offset by the load of the stand 11 by the zero adjustment of the load converter 16 shown in FIG. 8, and the outputs from the load cells 12 to 15 are The total WT of W1, W2, W3, and W4 becomes the load of the subject sitting on the table 11, as shown in the following equation. WT=W1+W2+W3+W4

Furthermore, at this time, the outputs W1, W2, W3, and W4 of each load cell 12 to 15 differ depending on the relationship between the load applied position and the installation position of the four load cells 12 to 15. 11 can be calculated. In other words, when the four load cells 12 to 15 are placed exactly at the four corners of a square, the load center (X, Y) expressed with the load cell 12 at the upper left of FIG. 5 (left rear of the subject) as the origin The left-right direction component X and the front-back direction component Y of are determined by the following equation. X=(W2+W3)/WT Y=(W3+W4)/WT Also, even if the load cells 12 to 15 are not arranged at the four corners of a square, correction calculations specific to the geometrical arrangement of the load cells 12 to 15 should be performed. The center of load can be calculated by Further, if three or more load cells are arranged, it is possible to determine the center of the load applied to the table 11.

As shown in FIG. 8, four load cells 12
Each of the ~15 outputs W1-W4 is a load transducer 1 with a measuring bridge circuit (not shown) and an A/D converter (not shown).
After compensating for the weight of the stand 11 in step 6 as described above, the data is sampled at regular intervals to become a digital quantity. and,
The data are sequentially taken into the processing device 3 via the I/O interface 9. Subject's load WT and load center (X, Y)
is calculated by the arithmetic processing means 10 of the processing device 3 according to the above-mentioned formula, and the calculated load WT and the load center (X,
The time series data of Y) is stored in the storage device 17 (
(equivalent to storage means).

In this ball batting motion training device, when the ball 5 is placed on the support 6 and a swing is made, the temporal change in the load WT and the load center (X, Y) for this one swing are calculated as described above. There is a practice mode that will be memorized. Next, the flow from the start to the end of this practice mode will be explained. In the state shown in FIG. 7, the ball 5 is placed on the support 6 of the tee stand 2, but it is assumed that the subject has finished one swing and the ball 5 is no longer on the support 6. In this case, the ball presence/absence sensor 7 detects the absence of the ball 5 on the support 6.

The display device 4 shown in FIG. 7 has a load center (X, Y
), and a plotter 4b that displays the load WT. Then, when there is no ball 5 on this support 6, as shown in FIG. 3, the movement trajectory L1 of the load center (X, Y) of the previous swing is displayed on the graphic display 4a, and the temporal change in the load WT is is printed on the plotter 4b. Further, the text "Please set the ball" is also displayed on the graphic display 4a at the same time.

Assume that after the above-mentioned state, the test subject places a new ball 5 on the support 6 as shown in FIG. 7 in order to make the next swing. In this case, the ball presence/absence sensor 7 changes from a state in which it detects the absence of the ball 5 on the support 6 to a state in which it detects the state in which the ball 5 is present on the support 6. Based on this change in the detection state of the ball presence/absence sensor 7, a command signal is issued from the control box 18 in the tea stand 2 to the I/O interface 9 of the processing device 3, as shown in FIG. Thereafter, based on this command signal, the measurement data from the load measuring device 1 is sequentially converted into the load center (X, Y) and the load WT by the arithmetic processing means 10 of the processing device 3 as described above. The data of the load center (X, Y) and the load WT are sequentially stored in the storage device 17. Furthermore, as shown in FIG. 2, at the same time, the text "Please swing" is displayed on the graphic display 4a of the display device 4.

[0024] In accordance with the above display on the graphic display 4a, the subject enters the address state. In this address state, the subject generally positions the head of the club C next to the ball 5, as shown in FIGS. 5 and 6, and often moves the head back and forth and from side to side to relieve tension ( so-called waffle motion). When such a waffle operation is performed, the club presence/absence sensor 8 is in a state where it repeats a state of detecting the presence of the head of the club C and a state of not detecting its presence.

Then, as shown in FIG. 4, after the subject finishes the waffle motion in the address state, he shifts to a backswing, enters a downswing, and hits the ball 5 with club C. During this time, the measurement data from the load measuring device 1 is processed and sequentially stored in the storage device 17, and at the same time, as shown in FIG.
The position is displayed as a point P1 on the graphic display 4a in real time, superimposed on the movement locus L1 of the previous swing.

In this case, the time point A0 when the ball presence/absence sensor 7 changes from the state in which it detects the presence of the ball 5 on the support 6 to the state in which it detects the state in which there is no ball 5 on the support 6 is determined. ,
Let T0 be the time point of impact when club C hits ball 5. Then, at time A2 after a set time T has elapsed from time T0 of the impact, it is determined that the follow-through, that is, one swing has been completed, and at this time A2, the measured data is processed and stored in the storage device 17. Terminate operation.

Further, going back from the time of impact T0, the club presence/absence sensor 8 repeatedly detects the presence of the head of club C and the state of not detecting its presence, and finally detects the presence of the head. The time point A1 when the state switches from the state where the presence is detected to the state where the presence is not detected is
The point at which the waffle motion ends is determined to be the point at which the backswing begins. In this case, as shown in FIG. 4, among the stored data D1 from the time when the ball 5 is placed on the support 6 and the memorization operation is started to the time A2 when the swing ends, the stored data corresponding to the waffle motion is deleted. The remaining stored data D2 is used.

As shown in FIG. 3, the previous movement locus L is displayed on the graphic display 4a of the display device 4.
1 is deleted, and the new stored data D2 corresponding to the movement locus of the load center (X, Y) is newly displayed on the graphic display 4a of the display device 4 as the movement locus L2. The temporal change in the load WT is displayed on the plotter 4b of the display device 4.

In the manner described above, the locus of movement of the load center and temporal changes in the load during one swing are stored and displayed on the display device 4. and,
The graphic display 4a of the display device 4 shows “
The message "Please set the ball" is also displayed at the same time, and the system returns to its initial state.

The above state is a normal practice mode in which the ball 5 is placed on the support 6 and the ball 5 is hit with the club C. Next, a missed swing mode in which the player swings the ball 5 without placing it on the support 6 and checks the swing will be explained. Figure 3 shows the swings performed in practice mode as described above.
Assume that the swing at the movement trajectory L2 shown in is a good swing for the subject. In this case, the subject operates the operation panel 19 of the processing device 3 shown in FIG. 7 to store this movement trajectory L2 (corresponding to the set movement trajectory) in the storage device 17. Then, the user operates the operation panel 19 to set the missed swing mode.

When the missed swing mode is set as described above, the above-mentioned movement trajectory L2 is displayed on the display device 4 as shown in FIG.
is displayed on the graphic display 4a (corresponding to the first display means). Then, the position of the current load center (X, Y) applied to the table 11 is determined by the arithmetic processing means 1 as described above.
0, and the position of the load center (X, Y) is simultaneously displayed as a point P1 on the graphic display 4a (corresponding to second display means).

From this state, the subject on the table 11 moves to the club C.
While holding and visually viewing the graphic display 4a,
Swing a little slowly. In this way,
The current position of the load center (X, Y) applied to the table 11 is continuously calculated and displayed in real time as a point P1 on the graphic display 4a overlapping the movement trajectory L2. The position of Y) is stored in the storage device 17 as measurement data. Then, among the measurement data stored in the storage device 17, the measurement data extending from the present time to the past for a set time is displayed as the movement trajectory L2 on the graphic display 4a as the past movement trajectory L3 of the load center, as shown in FIG. They are superimposed and displayed in real time (corresponding to the third display means).

In this case, the current load center (X, Y)
To make it easier to identify the point P1 indicating the position of , the past movement trajectory L3, and the movement trajectory L2, the movement trajectory L2 is displayed as a solid line, and the point P1 is displayed as a slightly larger dot in a different color from the movement trajectory L2. has been done. And the past movement trajectory L
3 is displayed as a dotted line in a color different from that of the point P1 and the movement trajectory L2.

[0034] When performing a missed swing as described above, the movement trajectory L that extends from the current moment to the past for a set time
3 is displayed on the graphic display 4a, and movement trajectories past the present time for more than a set time are sequentially erased from the graphic display 4a. Further, by operating the operation panel 19 of the processing device 3, the above-mentioned setting time for setting the past movement trajectory L3 can be arbitrarily changed to be longer or shorter (corresponding to a time changing means). Thereby, the length of the past movement trajectory L3 shown in FIG. 1 can be changed.

Further, when changing the good movement locus L2 displayed on the graphic display 4a, do as follows. In other words, the above-mentioned whiff mode is switched to the above-mentioned practice mode. Then, if the user takes a swing several times based on this practice mode and is able to make a good swing, he or she operates the operation panel 19 as described above to store the locus of movement of this good swing in the storage device 17. As a result, this new movement trajectory becomes the movement trajectory displayed during the missed swing mode, and the previously displayed movement trajectory is erased from the storage device 17 (corresponding to trajectory changing means).

Further, the ball batting motion training device of the present invention can be applied not only to golf swing training but also to various other swing training such as baseball batting practice and tennis stroke practice.

[0037] Incidentally, although reference numerals are written in the claims section for convenience of comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings by such entry.

[Brief explanation of drawings]

[Figure 1] Diagram showing the display state of the display device in the missed swing mode

[Fig. 2] A diagram showing the display state of the display device when the ball is placed on the support of the tee stand in practice mode.

[Fig. 3] A diagram showing the display state of the display device in the practice mode when one swing is completed and there is no ball on the support of the tee stand.

[Figure 4] Diagram showing the contents of measurement data stored in the storage device

[Figure 5] Plan view showing the entire batting action training device

[Figure 6] Front view showing the entire batting action training device

[Figure 7] A perspective view showing the entire batting action training machine

[Figure 8] Interaction diagram of each part of the load measuring device, tea stand, processing device, and display device

[Fig. 9] A diagram showing the display state of the display device in the conventional whiff mode.

[Fig. 10] A perspective view showing the entire conventional ball batting motion training machine.

[Explanation of symbols]

1 Load measuring means 4 Display device 11 Base 17 Storage means C Ball hitting tool P1 Current position of the load center L2 Set movement trajectory L3 Movement trajectory of the load center from the current moment to the past for a set time

Claims (3)

[Claims] Claim 1: A table (11) on which a subject who performs a ball-striking motion while holding a ball-striking tool (C) in his/her hand is placed, a load measuring means (1) for measuring the center of load applied to this table (11), and a ball-striking motion. A ball-striking motion training machine comprising a storage means (17) for storing measured data from the load measuring means (1) and a display device (4) for displaying the measured data on two-dimensional coordinates, a first display means for displaying the stored set movement locus (L2) of the load center on the display device (4); a second display means for displaying on the display device (4) superimposed on L2), and a movement locus (L3) of the load center extending from the present moment to the past for a set time in the measurement data stored in the storage means (17).
is superimposed on the set movement locus (L2) on the display device (4).
A batting action training machine comprising: a third display means for displaying a display on a ball. 2. Claim 1, further comprising time changing means for changing the set time for the past movement locus (L3).
The batting action practice machine described. 3. The ball batting motion training machine according to claim 1, further comprising trajectory changing means for changing the setting of the set movement trajectory (L2).