JP2003299757A - Training aid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve greater results of training. <P>SOLUTION: The axial acceleration of the shaft part with the grip held is sampled at the followthrough of each swing. The maximum speed Gp is determined from the waveform of the acceleration per pitching action thus obtained and the point PA at which the swing passes at the zero acceleration speed G0 immediately before the detected acceleration reaches the maximum acceleration Gp is defined as the top position and the point PB at which the swing passes at the zero acceleration G0 immediately after the detected acceleration reaches the maximum acceleration Gp is defined as the release position to determine the time interval between the top and release positions as delivery time. The working time DT is displayed together with the maximum acceleration Gp and the release point speed RM. The release point speed RM is determined as an integrated value of the difference in the acceleration waveform from the zero acceleration G0 between the working times DT. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a training assisting device, and more particularly to a training assisting device suitable for baseball pitching practice and golf swing practice.

[0002]

2. Description of the Related Art As a training aid of this type, there is a pitching training tool proposed in Japanese Patent Application No. 2000-034034 (hereinafter referred to as a prior application). This pitching practice tool 1 is shown in FIG.
As shown in the front view of FIG. 4, the hollow cylindrical shaft portion 2 having a slight flexibility, the grip portion 3 provided at the end of the shaft portion 2, and the grip portion 3 side of the shaft portion 2 are provided. The display unit 4 is provided.

Although not shown, a rotation frequency detector and a rotation speed detector, and a rotation frequency detector and a rotation speed detector are electrically connected to the shaft near the display unit 4. A processing device and a small battery that supplies electric power to each of these detectors and devices are housed. In this example, the grip end 5 to the tip 6 of the shaft portion 2
The length up to is 530 mm, for example.

The pitching practice tool 1 thus constructed is used for shadow pitching for learning an ideal pitching form based on the current pitching theory. As shown in FIG. 3 is grasped by hand, and the shaft portion 2 is shaken off while throwing a ball (see FIGS. 16 (a), 16 (b) and 16 (c)). The present-day baseball theory is described in detail in the previous application, so the description thereof is omitted here.

At this time, the rotation number detector housed in the shaft detects that the shaft portion 2 has been shaken off, and sends the detection signal to the processing device. The processing device counts up the number of pitching exercises displayed on the display unit 4 based on the detection signal from the rotation number detector. Further, the rotation speed detector housed in the shaft detects the rotation speed of the shaft portion 2 and sends it to the processing device. The processing unit converts the rotation speed from the rotation speed detector into a pitching speed when a ball such as an official hard ball or a soft ball is thrown, and displays it on the display unit 4.

In this pitching training tool 1, when the arm is swung down, the bending shaft produces a sharp wind noise, so that the swinging speed of the arm can be recognized by the tone color of the wind noise. This allows the top position of the pitch (start swing:
P1 point shown in FIG. 17) and release point (shake off:
Shadow pitching can be performed while being aware of the speed at required points such as P2 point shown in FIG. 17).

Further, since the shaft is lightweight and lighter than the ball, it is easy to swing out, and the shoulder and elbow are less likely to be burdened.
Therefore, there is an advantage that it is possible to practice pitching even if the number of times of practice is increased, the shoulder, the elbow and the back are hurt, or even indoors.

Furthermore, since the pitching speed when the ball is thrown at the swinging speed of the arm is displayed on the display unit 4, the pitching speed can be known as a concrete numerical value.
The number of pitching exercises can also be known as a numerical value on the display unit 4.

As described above, by using the pitching practice tool 1 of the prior application, it is possible to easily check the own throwing motion and the quality of the form. Therefore, by repeating the shadow pitching, the own throwing motion and the form. It is possible to easily learn the ideal pitching form based on the present-day baseball theory while modifying the.

[0010]

In pitching practice of baseball, it is desirable that the top position P1 of the pitch is as high as possible, behind the shoulders, and the arm is bent vertically. By increasing the time from the top position P1 to the release point P2, the maximum initial velocity can be given to the ball at the release point P2. Thus, in pitching practice of baseball, not only the pitching speed and the number of pitching exercises but also the time from the top position P1 to the release point P2 (hereinafter, this time is referred to as the action time) is an important factor. However, with the pitching practice tool 1 of the prior application, only the number of times of pitching practice and the pitching speed are displayed on the display unit 4, and the action time is not displayed, so that there is a concern that the desired training result cannot be obtained.

The present invention has been made to solve the above problems, and an object of the present invention is to make it possible to easily learn an ideal form and to improve the training result. To provide equipment.

[0012]

In order to achieve such an object, the present invention provides an acceleration sensor for detecting an acceleration applied to a shaft portion and an acceleration sensor when the grip portion is gripped and the shaft portion is shaken. The detected acceleration is sampled, and the first acceleration is immediately before the detected acceleration reaches the maximum acceleration based on the sampled series of acceleration data.
Is regarded as the top position, and immediately after the detected acceleration reaches the maximum acceleration, the second predetermined value is regarded as the release position, and the time interval between the top position and the release position is used. It is provided with a processing unit that obtains the time and displays this action time on the display unit. According to the present invention, when the grip portion is gripped and the shaft portion is shaken off, the time point when the detected acceleration reaches the first predetermined value immediately before reaching the maximum acceleration is regarded as the top position, and the detected acceleration becomes the maximum acceleration. Immediately after that, the time when the second predetermined value is reached is regarded as the release position, and the time interval between the top position and the release position is displayed as the operating time. In addition,
There is almost no error if the first predetermined value and the second predetermined value are set to zero, but in the case of a pitching motion, strictly speaking, the top position is zero immediately before the detected acceleration reaches the maximum acceleration. It is not a time point (zero point), but a time point when the acceleration sharply increases after passing the zero point. When high precision is required,
Although this time point is regarded as the top position, there is no significant difference in action time even if the zero point is regarded as the top position.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail with reference to the drawings. FIG. 1 (a) is a front view of a pitching practice tool showing an embodiment of a training aid according to the present invention. The pitching practice tool 10 includes a shaft portion 11, a grip portion 12, and a display portion 13 provided between the shaft portion 11 and the grip portion 12.

[Shaft Part] The shaft part 11 is a hollow cylindrical shaft 11-1 having a slight flexibility, and an impact-preventing rubber 1 provided at the tip of the shaft 11-1.
It is composed of 1-2 and a tubular portion 11-3. Tube 1
1-3 are integrally formed in a case 13-1 that covers an electronic circuit built in the display unit 13, and this cylindrical unit 11-
The shaft 11-1 is inserted and fixed to the shaft 3 so as not to come off. The material of the shaft 11-1 is carbon graphite used in the shaft of a golf club or the like.

[Grip part] The grip part 12 is composed of a grip 12-1 and a cap 12-2 provided at an end of the grip 12-1. Grip 12-
1 is integrally provided at the end of the case 13-1 on the opposite side of the tubular portion 11-3, and a plurality of grooves 12-1a are provided on the outer peripheral surface thereof to form a slip stopper. . Also,
Two 1.5 V dry batteries are accommodated inside the grip portion 12. Strap 14 on the cap 12-2
Is attached. In the present embodiment, the length L from the end of the grip portion 12 to the tip of the shaft portion 11
Is about 530 mm.

[Display] As shown in an enlarged view of FIG. 1B, the display 13 is exposed on the front surface of the case 13-1 and has a liquid crystal display 13-2 and a three-color light emitting diode. 13-3 and operation buttons SW1, SW2, SW3 are provided. The operation button SW1 serves both as a power button and a mode button. The operation button SW2 also serves as a start button, a stop button, and an up button. The operation button SW3 is used as a down button.

In the display unit 13, an electronic circuit centering on a central processing unit (CPU) is housed inside the case 13-1. FIG. 2 shows a block diagram of the display unit 13. In the figure, 13-4 is a CPU, and the display 13-2, the three-color light emitting diode 13-3, and the switches SW1 to SW3 are connected to the CPU 13-4. The three-color light emitting diode 13-3 is composed of an orange LED1, a green LED2 and a blue LED3, and includes an LED1, an LED2, an LED3 and a CPU 13-4.
Buffers BF1, BF2, and BF3 are provided between and.

Further, inside the case 13-1, a uniaxial acceleration sensor 13-5 is provided between the operation buttons SW2 and SW3 at the position shown by the one-dot chain line in FIG. 1 (b). There is. The acceleration sensor 13-5 detects the acceleration in the longitudinal direction of the shaft 11-1, that is, the shaft portion 1.
It is attached in the axial direction of 1. Acceleration sensor 1
The acceleration detected by 3-5 is sent to the CP via the amplifier 13-6.
Given to U13-4.

Inside the case 13-1, a buzzer 13-7, an E ² PROM 13-8, and a DC / DC converter 1 are provided.
3-9 are provided. Buzzer 13-7 is CPU1
3-4 receives a command from the buffer BF4,
The electronic sounds such as "beep,""beep," and "beep beep" are generated.

The DC / DC converter 13-9 has a battery voltage V _B (V _B from the dry battery housed in the grip portion 12).
= The 3V) as input, converts the battery voltage V _B to the power supply voltage Vc1 which is stable 5V, and supplies the CPU 13-4. The DC / DC converter 13-9 has a built-in capacitor or charging battery to prevent power interruptions in the power supply voltage Vc1 and prevent measurement errors due to battery interruptions that are likely to occur during pitching practice. I have to. CP
U13-4 is a ROM / RAM built-in type, RO
It operates according to the program stored in M.

[Transition of Operating State] FIG. 3 shows a transition diagram of the operating state of the pitching practice tool 10. Transition state S shown in FIG.
1 is an OFF mode. In this OFF mode,
The CPU 13-4 is in a standby state. Further, the display 13-2 is in a state where the display is turned off, and the three-color light emitting diode 13-3 is also turned off. OF
When the operation button SW1 is pressed for 3 seconds in the F mode (transition state S2), the CPU 13-4 performs zero correction of the acceleration (transition state S3), checks the battery voltage V _B (transition state S4), and stops mode. (Transition state S5).

Zero correction of the acceleration in the transition state S3 is performed as follows. The acceleration detected by the acceleration sensor 13-5 in the stationary state is taken 80 times at 1 msec intervals and averaged to obtain a zero correction value of the acceleration. That is, the A / D converted value of the detected acceleration every 1 msec is accumulated 80 times and divided by 80, and the average acceleration obtained by this is taken as zero acceleration G0.

Battery voltage V in transition state S4_BCheck of
Is performed as follows. Battery voltage V _B Is A / D converted,
Check if it is below 2.8V. Battery voltage V
_B If the voltage is less than 2.8V, as shown in FIG.
Display section DS1, DS2 of three-stage configuration of spray 13-2
The character "LO" is displayed blinking on DS2 of DS3.

When shifting to the STOP mode, the CPU 13
-4 is the display section DS1, DS of the display 13-2
2, DS3, as shown in FIG. 5, "0", "0.0",
The numerical value "0.0" is displayed. When the operation button SW1 is pressed for 3 seconds in the STOP mode (transition state S2), the CPU 13-4 returns to the OFF mode. Also, if there is no operation for 3 minutes in the STOP mode (transition state S6), the CPU 13-4 returns to the OFF mode.

In the STOP mode, the operation button SW
When 2 is pressed (transition state S7), the CPU 13-4 shifts to the measurement mode (transition state S8). When shifting to the measurement mode, the CPU 13-4 displays the display units DS1, DS2.
The display of DS3 is changed to “−−”, “−−”, “−−” (see FIG. 6), the battery voltage V _B is checked in the same manner as the transition state S4, and the maximum acceleration Gp (m / sec ² ), Release point speed RM (km / h), action time DT (sec)
Comprising the measurement (transition state S8 _1). If the previous measured value remains, the measured value is displayed. Maximum acceleration Gp, release point speed RM, action time DT
The measurement of will be described later.

Once in the measurement mode, the CPU 13-4
Is the maximum acceleration Gp,
The release point speed RM and the action time DT are automatically measured, and the number of times the shaft 11 is shaken is counted as the number of practice times CT. CPU 13-4,
Measured maximum acceleration Gp, release point speed R
M and the action time DT are displayed on the display units DS1, DS2, DS3 (see FIG. 7). In addition, the counted number of practice CT
Displays the release point speed RM on the display section DS2 in a switchable manner.

When displaying the maximum acceleration Gp, the release point speed RM, the operating time DT, and the number of times of practice CT, the CPU 13-4 uses the measured release point speed RM as the preset release point determination speed RS. The determination result is notified by the emission color of the three-color light emitting diode 13-3 and the electronic sound of the buzzer 13-7. The CPU 13-4 also stores the measured maximum acceleration Gp, release point speed RM, action time DT, practice count CT, and release point speed RM determination results in the E ² PROM 13-8.

FIG. 8 shows the relationship between the determination region of the release point speed RM, the emission color of the three-color light emitting diode 13-3 and the electronic sound of the buzzer 13-7. CPU 13-4,
For example, the judgment width RW of the release point speed is 20%
Then, the release point speed RM and the release point determination speed RS are compared. The release point speed judgment width RW can be changed by E ² PR.
It is stored in the OM 13-8.

If RM <RS × (1−RW), it is determined that the release point speed RM is slow, an electronic sound “beep” is emitted from the buzzer 13-7, and the three-color light emitting diode 13-3 is orange. To emit light. RS x
If (1−RW) ≦ RM ≦ RS × (1 + RW), it is determined that the release point speed RM is OK, and the buzzer 13-7 emits a beeping sound and the three-color light emitting diode 13 is emitted. -3 emits green light. If RS × (1 + RW) <RM, it is determined that the release point speed RM is fast, and the buzzer 13-
A beeping sound is emitted from 7 and the three-color light emitting diode 13-3 emits blue light.

The operation button SW1 is displayed while the maximum acceleration Gp, the release point speed RM, and the action time DT are displayed.
When is pressed (transition state S8 ₂ ), the CPU 13-4 switches the screen as shown in FIG. 9 and displays the counted number of times of practice CT on the display unit DS2 (transition state S8 ₃ ).
When the operation button SW1 during the display of this exercise count CT is pressed (transition state S8 _2), CPU 13-4, the maximum acceleration Gp, release point speed RM, action time DT
Return to the display screen (transition state S8 _1).

When the operation button SW2 is pressed in the measurement mode (transition state S7), the CPU 13-4 causes the STO.
Return to the P mode (transition state S5). Also, when the measurement is not performed for 3 minutes in the measurement mode (transition state S9), the CPU 13-4 returns to the STOP mode (transition state S5).

When returning from the measurement mode to the STOP mode,
As shown in FIG. 10, the CPU 13-4 turns off the three-color light emitting diode 13-3 and displays the average value of the maximum acceleration Gp from the start of the measurement (the number of times of practice CT = 1) to the previous time on the display unit DS1. To display. Similarly, the average value of the release point speed RM is displayed on the display unit DS2, and the average value of the action time DT is displayed on the display unit DS3. In addition, the practice count CT is reset to zero.

In the STOP mode, the operation button SW
When 2 and SW3 are pressed simultaneously for 3 seconds (transition state S1
0), the CPU 13-4 clears all the measurement data stored in the E ² PROM 13-8 (transition state S1.
1). When the operation button SW1 is pressed in the STOP mode (transition state S12), the CPU 13-4 causes the SPE
The mode shifts to the ED setting mode (transition state S13).

In the SPEED setting mode, the release point judgment speed RS can be set. When shifting to the SPEED setting mode, as shown in FIG.
The current release point determination speed RS is displayed blinking in S2. When the operation button SW2 is pressed while the release point determination speed RS is displayed, 30 km / h to 6
The release point determination speed RS can be increased in units of 1 km / h up to 00 km / h. When the operation button SW3 is pressed, the release point determination speed R in units of 1 km / h from 30 km / h to 600 km / h
S can be brought down. Operation button SW2 / S
When W3 is continuously pressed for 1 second or more, the release point determination speed RS continuously increases / decreases.

When the operation button SW1 is pressed in the SPEED setting mode (transition state S12), the CPU 13
-4 returns to the STOP mode (transition state S5). As a result, the blinking of the release point determination speed RS displayed on the display section DS2 stops, and the speed is confirmed as the release point determination speed RS. In addition, when the operation is not performed for 3 minutes while the SPEED setting mode is set (transition state S14), the CPU 13
-4 returns to the STOP mode (transition state S5).

[Measurement of Maximum Acceleration Gp, Release Point Speed RM, and Action Time DT] The practitioner passes the strap 14 of the pitching training tool 10 around his wrist and holds the grip portion 12. When the operation switch (power button) SW1 is pressed for 3 seconds or more (step 101 shown in FIG. 12), the CPU 13-
In step 4, zero correction of acceleration is performed (step 102). Also,
After this zero correction, the battery voltage V _B is checked (step 103).

As described above, the zero correction of the acceleration in step 102 takes in 80 times the acceleration detected by the acceleration sensor 13-5 in the stationary state at 1 msec intervals, averages them, and zeroes the average acceleration obtained by this. The acceleration is G0. Checking the battery voltage V _{B in} step 103
When the battery voltage V _B is 2.8 V or less, it is determined that the battery is in a low battery state, and the character “LO” is blinked on the display section DS2 of the display 13-2. If it exceeds 2.8 V, the battery voltage V _B is considered to be good, and the mode shifts to the STOP mode.

When shifting to the STOP mode, the CPU 13
-4 is the display section DS1, DS of the display 13-2
2 and DS3 are brought into a display state as shown in FIG. When the operation button (start button) SW2 is pressed from this state (step 104), the CPU 13-4 shifts to the measurement mode, and the display of the display units DS1, DS2, DS3 is changed to "-".
− ”,“ −− ”, and“ −− ”(FIG. 6).

At this time, the last measured value is the E ² PROM 13
If it remains in -8, the measured value is displayed on the display 13
-2 is displayed. That is, the maximum acceleration G measured last time
p, release point speed RM, and action time DT are displayed on the display sections DS1, DS2, DS3. Further, the three-color light emitting diode 13-3 is turned on with the color at the time of the previous measurement. Here, it is assumed that the previous measured value remains in the E ² PROM 13-8 and the display on the display unit 13 is in the display state as shown in FIG. 7.

In this measurement mode, the CPU 13-4
Is the acceleration detected by the acceleration sensor 13-5 for 1 msec.
Are taken in at the sampling interval of and are A / D converted (step 105). Then, the A / D converted acceleration data is sequentially stored in the RAM incorporated in the CPU 13-4 (step 106). In measurement mode, CP
U13-4 stores 1 of this acceleration data in RAM.
Repeated every msec.

From this state, the practitioner shakes off the shaft portion 11 while throwing a ball (see FIG. 1).
6 (a), (b), (c)). By this operation, a large acceleration is applied to the shaft portion 11 in the axial direction, and the acceleration sensor 13-2 detects the acceleration applied to the shaft portion 11 in the axial direction. At this time, the waveform of the detected acceleration input to the CPU 13-4 is, for example, a waveform as shown in FIG. 13 (hereinafter, this waveform is referred to as a one-throw acceleration waveform). The CPU 13-4 uses this 1-throw acceleration waveform for 1 mse
A / D conversion is performed for each c and sequentially stored in RAM as acceleration data.

After the acquisition of the acceleration data of the one-pitch acceleration waveform is completed, the CPU 13-4 outputs the 472 samples after the trigger level GT is exceeded among the acquired acceleration data of the one-pitch acceleration waveform, and before the trigger level GT is exceeded. The 512 samples are taken out of the 40 samples (step 107). The trigger level GT is stored in advance in the E ² PROM 13-8 as a set value, and in this embodiment, GT = + 200 m / sec ² (about 2
0G). The trigger level GT is set with the zero acceleration G0 as a base point.

Then, the maximum acceleration data in the extracted 512 samples is extracted, and the difference between the acceleration value GM indicated by the maximum acceleration data and the zero acceleration G0 is set as the maximum acceleration Gp (step 108). Then, a point PA that crosses the zero acceleration G0 immediately before the detected acceleration reaches the maximum acceleration Gp and a point PB that crosses the zero acceleration G0 immediately after the detected acceleration reaches the maximum acceleration Gp are searched (step 109).

The point PA that crosses the zero acceleration G0 immediately before the detected acceleration reaches the maximum acceleration Gp can be regarded as the top position P1 of the pitching motion shown in FIG. Strictly speaking, the top position P1 does not cross the zero acceleration G0 immediately before reaching the maximum acceleration Gp, but is a time point when the acceleration sharply rises after passing the zero acceleration G0, but does not cross the zero acceleration G0. There is no big deal even if is set to the top position P1. In the present embodiment, in order to simplify the processing, the point PA that crosses the zero acceleration G0 immediately before the detected acceleration reaches the maximum acceleration Gp is regarded as the top position P1 of the pitching motion. When high accuracy is required, zero acceleration G0
A point where the acceleration sharply increases after passing is found, and the point is set as PA.

The point PB which crosses the zero acceleration G0 immediately after the detected acceleration reaches the maximum acceleration Gp can be regarded as the release position P2 of the pitching motion shown in FIG. At the release position P2 of the pitching motion, the speed becomes maximum and the acceleration becomes zero.

Next, the CPU 13-4 passes the zero acceleration G0 just before the detected acceleration reaches the maximum acceleration Gp, which is a point PA.
And the time interval between the point PB that crosses the zero acceleration G0 immediately after the detected acceleration reaches the maximum acceleration Gp, that is, the time interval between the point PA that is regarded as the top position and the point PB that is regarded as the release position, is obtained as the action time DT. (Step 11
0). Also, the zero acceleration G of the acceleration waveform during the action time DT
The integrated value of the difference from 0 (the hatched portion in FIG. 13) is obtained as the release point speed RM (step 11
0).

Then, the maximum acceleration Gp (m / sec ² ) obtained in step 108 is displayed on the display section DS1 and step 110
The action time DT (sec) calculated in step 110 is displayed on the display DS3, and the release point speed RM (k
m / h) is displayed on the display section DS3 (step 11).
2). At this time, the CPU 13-4 notifies the determination result of the measured release point speed RM by the emission color of the three-color light emitting diode 13-3 and the electronic sound of the buzzer 13-7.

In the present embodiment, the maximum acceleration Gp and the release point speed RM are the maximum acceleration and the release point speed at the time of actual pitching due to the difference in the mass of the ball and the pitching training device 10. Is different. As a further advanced example of the present embodiment, the maximum acceleration Gp and the release point speed RM may be converted into values when a ball such as an official hard ball or a soft ball is thrown and displayed.

In baseball pitching practice, the top position P1 of the pitch is as high as possible, behind the shoulders, the position where the arm is bent vertically is desirable, and the amount of exercise is increased by swinging powerfully all at once, and from the top position P1. By increasing the time to the release point P2, the maximum initial velocity can be given to the ball at the release point P2. This can be seen from the single-ball pitch acceleration waveform shown in FIG. 13. The longer the action time DT and the larger the maximum acceleration Gp, the release point speed RM.
Can be faster.

In the pitching practice tool 10 of the present embodiment, the maximum acceleration Gp, the release point speed RM, and the action time DT are displayed as numerical values for each pitching motion, so the action time DT is long and the maximum acceleration Gp is It is possible to easily learn the ideal pitching form that the release point speed RM becomes faster by repeating the training to increase the size, and the practice result can be remarkably improved as compared with the conventional pitching practice tool 1. .

Further, in the pitching practice tool 10 of the present embodiment, the target value of the release point speed RM can be set in three stages, and the display color of the three-color light emitting diode 13-3 and the buzzer 13-7. Since the release point speed RM can be known for each pitching motion by the electronic sound, the practice result can be further enhanced.

Further, the pitching training tool 10 of the present embodiment is
Since the maximum acceleration Gp and the action time DT are displayed, players other than pitchers, for example, players who need quick motion, such as catchers, infielders, and outfielders, should practice pitching in the same manner as pitchers. Is possible. In this case, practice is performed such that the action time DT is shortened and the maximum acceleration Gp is increased.

Although the release point speed RM is displayed in km / h in the above-mentioned embodiment,
It is displayed as mile / h for export. Whether to set km / h or mile / h can be selected by data setting in the E ² PROM 13-8. Also, E
² Trigger level GT stored in PROM 13-8
The setting range of the judgment width RW of the release point speed and the like can be changed.

In the above embodiment, the acceleration detected by the acceleration sensor 13-5 is A / D converted and sequentially stored in the RAM as acceleration data.
At the same time, the detected acceleration (raw data) from the acceleration sensor 13-5 may be temporarily stored in the E ² PROM 13-8 and wirelessly transmitted to the outside. By doing so, on the receiving side, the raw data from the pitching practice tool 10 is analyzed in real time, and one pitching acceleration waveform is displayed on the receiving side display device to give the trainee detailed advice. It becomes possible. In addition, by accumulating raw data transmitted from the pitching practice tool 10 on the receiving side, it becomes possible to analyze and analyze numerical values and waveforms after practice. Note that not only the detected acceleration (data before calculation processing) from the acceleration sensor 13-5 but also data (data after calculation processing) such as the maximum acceleration Gp, the action time DT, the release point speed RM, etc. May be transmitted to the receiving side.

In the above embodiment, the uniaxial acceleration sensor 13-5 is provided to detect only the acceleration in the axial direction of the shaft portion 11. However, for example, a triaxial acceleration sensor is provided and its Shaft 11 as vector sum
You may make it detect the acceleration applied to. In the present embodiment, since the axial acceleration is obtained as the largest value, the uniaxial acceleration sensor 13-5 for detecting the axial acceleration is provided.

The present invention can be applied to not only pitching training equipment but also golf swing training equipment in the same manner. In this case, the position where the golf club is taken back is the top position, and the position where the ball is impacted is the release position. Strictly speaking, in the case of golf, the impacted position does not become the zero acceleration G0, but the position slightly off the impacted position becomes the zero acceleration G0. When high accuracy is required, a point slightly before the point where the zero acceleration G0 is crossed is set as the point PB, and the action time DT is obtained.

[0057]

As is apparent from the above description, according to the present invention, when the grip portion is grasped and the shaft portion is shaken off, the time when the detected acceleration reaches the first predetermined value immediately before the maximum acceleration is reached. It is regarded as the top position, and the time when the detected acceleration reaches the second predetermined value immediately after reaching the maximum acceleration is regarded as the release position, and the time interval between the top position and the release position is displayed as the action time. As a result, it becomes possible to easily learn the ideal form and improve the practice result by using the action time which cannot be known by the conventional training aids as an index.

[Brief description of drawings]

FIG. 1 is a front view showing a pitching practice tool showing an embodiment of a training aid according to the present invention and a display section of the pitching practice tool.

FIG. 2 is a block diagram of a display unit of the pitching training tool.

FIG. 3 is a transition diagram of operating states of the pitching training device.

FIG. 4 is a diagram showing a display screen example of a check result of a battery voltage on a display unit of the pitching practice tool.

FIG. 5 is a diagram showing an example of a display screen when the mode is changed from the OFF mode to the STOP mode.

FIG. 6 is a diagram showing an example of a display screen at the time of shifting from the STOP mode to the measurement motor.

FIG. 7 is a diagram showing a display example of maximum acceleration, release point speed, and action time.

FIG. 8 is a diagram showing a relationship between a release point speed determination area, a light emission color of a three-color light emitting diode, and an electronic sound of a buzzer.

FIG. 9 is a diagram showing an example of a display screen showing the number of exercises.

FIG. 10 is a diagram showing an example of a display screen when the measurement mode is changed to the STOP mode.

FIG. 11 is a diagram showing an example of a display screen when the STOP mode is switched to the SPEED setting mode.

[Fig. 12] Maximum acceleration, release point speed,
It is a flow chart explaining measurement processing operation of action time.

FIG. 13 is a diagram showing a single-ball throw acceleration waveform input from the acceleration sensor to the CPU.

FIG. 14 is a front view showing a pitching practice tool shown in Japanese Patent Application No. 2000-034034 (prior application).

FIG. 15 is a view showing a state in which the grip portion of the pitching training device is held by a hand.

FIG. 16 is a view showing how the shaft portion is shaken off while throwing a ball.

FIG. 17 is a diagram illustrating a top position and a release position of a pitch.

[Explanation of symbols]

10 ... Pitching practice tool, 11 ... Shaft part, 11-1 ... Shaft, 11-2 ... Rubber, 11-3 ... Cylindrical part, 12 ... Grip part, 12-1 ... Grip, 12-2 ... Cap, 13
... Display section, 13-1, case, 13-2, display, 13-3, three-color light emitting diode, 13-4, CP
U, 13-5 ... Acceleration sensor, 13-6 ... Amplifier, 13
-7 ... ^{buzzer, 13-8 ... E 2 PROM, 13-9} ... D
C / DC converter, DS1, DS2, DS3 ... Display unit, S
W1, SW2, SW3 ... Operation buttons, BF1 to BF4 ...
Buffer, 14 ... Strap.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yasuyuki Imato             4-20-5 Kitakarasuyama, Setagaya-ku, Tokyo

Claims (3)

[Claims] 1. A training aid including a shaft portion, a grip portion, and a display portion, wherein an acceleration sensor for detecting an acceleration applied to the shaft portion, and a gripping portion gripping the grip portion when the shaft portion is shaken. The acceleration detected by the acceleration sensor is sampled, and the time point at which the first predetermined value is reached immediately before the detected acceleration reaches the maximum acceleration is regarded as the top position based on the sampled series of acceleration data. Immediately after reaching the maximum acceleration, the time when the second predetermined value is reached is regarded as the release position, the time interval between the top position and the release position is obtained as the action time, and this action time is displayed on the display unit. A training aid characterized by having and. 2. The training aid according to claim 1, wherein the first predetermined value and the second predetermined value in the processing means are both zero. 3. The training aid according to claim 1 or 2, further comprising a data transmission means for transmitting data to the outside.