JPH06142255A - Golf practice machine - Google Patents

Abstract

PURPOSE:To provide a golf practice machine enabling a testee of weight to easily grasp a load change during hitting motion. CONSTITUTION:A golf practice machine is equipped with a swing stand 1 where a testee stands, holding a hitting tool for practicing a hitting motion, a load measurement means to measure the load of the testee's whole body, or each of right and left feet, a control means for saving data measured with the load measurement means during the testee's hitting motion as a time series of data, and outputting the saved data to a display means 4. In this practice machine, the control means divides the data measured with the load measurement means by the testee's weight, thereby providing a load ratio. Furthermore, the machine is so constituted that a time series of the load ratio data is outputted to the display means 4 in the form of a two-dimensional locus.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swing table on which a subject who holds a hitting ball and hits is placed, a load measuring means for measuring the load of the entire body of the subject or each of the left and right feet, and a hitting operation during hitting. The present invention relates to a ball hitting practice machine provided with a control means for storing the measurement result of the load measuring means as time series data and outputting the stored measurement result to a display means.

[0002]

2. Description of the Related Art Such a ball hitting practice machine is used for practicing ball hitting motions such as golf and batting. It is known that in the practice of these ball hitting movements, whether or not the center of gravity moves correctly with the ball hitting movement is an important index for forming a correct ball hitting form. Therefore, such a batting motion training machine measures the movement of the center of gravity during a batting motion, outputs this measurement result, and outputs the movement data of the center of gravity for comparison, and compares the respective batting motions. I am able to check the quality. Specifically, when the subject performs a ball hitting motion on a swing table, the load value of the entire body of the subject or each of the left and right feet is measured, and the time change of the measurement result is displayed (for example, the book Applicant's already proposed Japanese Patent Application No. 4-
No. 222458).

[0003]

In the above-mentioned conventional ball hitting practice machine, since the measured change in the load value of the whole body of the subject or each of the left and right feet is displayed as it is, the load value of the subject having a heavy weight is displayed. When displayed, a large display area is required because the amount of change in the load value is large, and when the load value of a subject with a light weight is displayed, there is a problem that the change in the load value is difficult to see because the amount of change in the load value is small. It was The present invention has been made in view of the above circumstances, and an object thereof is to provide a ball hitting exercise machine in which a subject of any weight value can easily grasp the change in the load in the ball hitting motion. It is in.

[0004]

SUMMARY OF THE INVENTION A ball hitting practice machine of the present invention is a swing table on which a subject who holds a ball hitting tool and hits a ball is placed, and a load measurement for measuring the load on the entire body of the subject or each of the left and right feet. Means for storing the measurement results of the load measuring means during the ball hitting operation as time series data, and
A control means for outputting the stored measurement result to the display means is provided, and the first characteristic configuration is that the control means divides the measurement result of the load measuring means by the weight value of the subject. The load ratio is calculated and the time-series data of the load ratio is output to the display means as a two-dimensional locus. In a second characteristic configuration, the load measuring means is configured to measure the load center of the entire body of the subject or each of the left and right feet, and the control means controls the two-dimensional trajectory of the load ratio and the body of the subject. The two-dimensional locus of the load center of the whole or each of the left and right feet is configured to be displayed on the same screen of the display means. The third characteristic configuration is the address point, top position,
And a feature point detection means for detecting the impact time point is provided, and the control means, based on the feature point detection means,
The two-dimensional locus of the load ratio is output to the display means in a state in which the address point, the top position, and the impact time point can be identified, and the load ratio at the address point, the top position, and the impact time point is numerically expressed. It is configured to output to the display means.

[0005]

According to the first characteristic configuration of the present invention, when a subject hits a ball on a swing table, the load of the entire body of the subject or each of the left and right feet is measured, and the measurement result is used as the weight value of the subject. The load ratio divided by is displayed on the display means. Second
According to the characteristic configuration, when the subject performs a ball hitting motion on the swing table, the load center of the entire body of the subject or each of the left and right feet is measured, and the two-dimensional locus of the load center and the two-dimensional locus of the load ratio are Is displayed on the same screen. According to the third characteristic configuration, when the subject performs a ball hitting motion on the swing table, an address point, a top position, and an impact time point as the feature points during the ball hitting motion are detected, and based on these feature points, The two-dimensional locus of the load ratio is displayed in a state in which these feature points can be identified, and the load ratio at each of these feature points is displayed as a numerical value.

[0006]

According to the first characteristic configuration, since the load change of the whole body of the subject or each of the left and right feet is displayed by the change of the load ratio, both the heavy and light subjects are in the same display area. Therefore, the present invention provides a batting ball practice machine that allows any subject of any weight value to easily grasp the change in the load during batting motion. According to the second characteristic configuration, since the two-dimensional trajectory of the load center and the two-dimensional trajectory of the load ratio in the hitting motion of the subject are displayed on the same screen, it is possible to evaluate the load and the change of the load center at the same time. We have made it possible to provide a more convenient batting motion training machine. According to the third characteristic configuration, the address point, the top position, the respective positions at the time of impact, and the value of the load ratio at those points in the two-dimensional locus of the load ratio can be grasped immediately, which is more convenient. We came to offer a batting motion training machine.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment in which the present invention is applied to a golf practice machine will be described below with reference to the drawings. 1 to 3,
1 is a swing table, 2 is a ball mounting table, 3 is a processing device, and 4 is a display device as a display means. During the swing, the golf training machine of the present embodiment processes the detection data of the load detection sensor D provided on the swing base 1 by the processing device 3 to display the load center on the display device in real time, and The time-series data centered on the load is temporarily stored and displayed after the swing is completed. Hereinafter, each device will be described.

The swing base 1 comprises two load detection bases 10 and 11 corresponding to the left and right feet respectively.
Is the four load cells 12, 1 as the load detection sensor D
The four corners are supported by 3, 14, and 15, and the load detection base 11 is supported by the four load cells 16, 17, 18, and 19 as the load detection sensor D at the four corners. On the swing table 1, the subject holding the club C swings. At this time, the load applied to the swing base 1 is the eight load cells 12, 13, 14, 15, 16, 17, 18, 1 supporting the two load detection bases 10, 11.
The load and the load center of the subject and the load centers corresponding to the left and right feet of the subject are obtained from these outputs as will be described later.

A support tool 25 for mounting the ball 24 when performing a swing practice with a wood club or the like is mounted on the ball mounting table 2, and the swing tool 1 side of the support tool 25 has an iron club or the like. A marker 70 indicating the position where the ball is directly placed on the ball placing table 2 when the swing is practiced is drawn. Then, the presence or absence of the ball 24 is detected on both sides of the support tool 25 and the marker 70 sandwiching the club head passage, and the ball 24 is detected by the support tool 2.
5 functions as a reset switch when a new swing is started when placed on the marker 70 or the marker 70, and the ball 24 on the support 25 or the marker 70 is hit by the club C and on the support 25. A sphere detection sensor 21 is provided for detecting the time point when the golf ball disappears as an impact point which is one of the characteristic points in the golf swing. Support tool 2
5 and a club detection sensor 22 for detecting the movement of the club C toward the backswing side are provided on both sides of the club head passage on the backswing side of the marker 5 and the marker 70.

Sphere detection sensor 21 and club detection sensor 2
Each of 2 is composed of a transmissive optical sensor. As for the arrangement of these sensors, the light emitting portion 21a of the ball detection sensor 21 and the light emitting portion 22a of the club detection sensor 22 are installed on the side of the club head passage opposite to the swing base 1, and the club heads of these light emitting portions 21a, 22a are arranged. A light receiving portion 21b of the ball detection sensor 21 and a light receiving portion 22b of the club detection sensor 22 are installed opposite to each other across the passage, facing the respective light emitting portions 21a, 22a. The detection light emitted from the light emitting portion 21a of the sphere detection sensor 21 is located on the light receiving portion 21 diagonally below.
Although it is projected toward b, this detection light passes through the region where the sphere 24 above the support tool 25 and the marker 70 should exist, and when the sphere 24 is placed on the support tool 25,
Even when the sphere is placed on the marker 70, the presence or absence of the sphere 24 can be similarly detected. The projection path of the detection light of the club detection sensor 22 is set to be substantially parallel to the projection path of the detection light of the sphere detection sensor 21, and even when the sphere 24 is placed on the support tool 25, the marker 70 is used. If you put a ball on top,
The passage of the club can be detected without fail.
The drive circuit for the ball detection sensor 21 and the club detection sensor 22 is built in the control box 26.

The processing device 3 includes a calculation device 31 for performing a calculation process for obtaining a load and a load center and a sequence control of the device, an I / O interface 32 for transferring various data, and a load and a load center measurement information. It comprises a storage device 33 for storing, an operation console 34 for selecting an operation mode of the device and inputting various comments, an external storage device 35 for storing measurement information and the like. The display device 4 comprises a graphic display device 4a and a plotter 4b. The graphic display device 4a has a two-dimensional locus of the load center of the entire body, left and right feet, and a two-dimensional locus of the load ratio of the whole body (time change). However, on the plotter 4b, a two-dimensional locus (change with time) of the load ratios of the entire body and the left and right feet is displayed.

Next, the process of calculating the load and the load center by the arithmetic unit 31 functioning as the load measuring means M will be described. The test subject who holds the club C stands in a substantially center position on the swing table 1 while standing with the left and right feet on the two load detection tables 10 and 11, respectively. Explaining the load detection table 10 on which the subject places his left foot as an example, the load cells 12, 13, 14, at the four corners of the load detection table 10,
With respect to the output of 15, the stand load is canceled in advance by zero adjustment in the load converter 100, so that the total WL of the outputs W1, W2, W3, and W4 of the test subject on the load detection table 10 is obtained. The load on the left foot. That is, WL = W1 + W2 + W3 + W4 Further, at this time, the position where the load is applied and the four load cells 1
Since the shared output of each load cell differs depending on the relationship with the installation positions of 2 to 15, the load center of the load applied to the load detection base 10 can be obtained from these outputs.

That is, the left-right direction component X and the front-back direction component Y of the load center expressed with the load cell 12 in FIG. 1 as the origin.
The four load cells 12 to 15 have the widths a and Y in the X direction.
In the case where the load detection base 10 has a rectangular width of b and is arranged at four corners, it can be calculated from X = (W2 + W3) × a / WL Y = (W3 + W4) × b / WL. In addition, the load cells 12, 13,
Even when the arrangements of 14 and 15 are not at the four corners of the rectangle, the load center can be obtained by performing the correction unique to the geometrical arrangement of the load cells. If three or more load cells are arranged, the center of the load applied to the swing table 1 can be obtained. The load detection table 11 on which the subject places his right foot is also configured the same as the load measuring device 10,
Similarly to the above, the load center of the load applied to the load detection base 11 can be obtained. That is, the load centers corresponding to the left and right feet of the subject can be obtained.

As for the load and center of load of both legs of the subject, that is, the whole body, the load applied to the load detection base 11 is W.
If it is R, as in the case of the left foot above, the load cell 16
From the outputs W5 to W8 of ~ 19, WR = W5 + W6 + W7 + W8, the load WT of the whole body is obtained by WT = WL + WR, and the load center is the distance between the load center corresponding to the left foot and the load center corresponding to the right foot of the subject. If it is L, it is located at a position WR × L / WT away from the load center corresponding to the left foot on the line segment connecting the left and right load centers, and this can be calculated.

As shown in FIG. 3, eight load cells 12 ...
Outputs W1 to W4 and W5 to W8 of 15 and 16 to 19
Is a load converter 100 equipped with a measurement bridge circuit and an A / D converter, and after compensating for the weight of the swing table 1 as described above, it is sampled at regular intervals and becomes a digital quantity. Then, it is sequentially loaded into the processing device 3 via the I / O interface 32. The load WT of the subject, the load center, and the load centers corresponding to the left and right feet are calculated by the arithmetic unit 31 in the processing device 3 according to the above-described formula. Then, the arithmetic unit 31 displays the obtained load centers corresponding to the entire body of the subject and each of the left and right feet on the graphic display device 4a of the display device 4 in real time, and the time series data of the load and the subject The time series data of the load center corresponding to each of the left and right feet and the load center corresponding to the entire body of the subject are stored in the storage device 33. Further, the arithmetic unit 31 divides the obtained loads corresponding to the whole body of the subject and each of the left and right feet by the weight value of the subject to obtain the load ratio, and the time series data of these load ratios is stored in the storage device. 33
Remember. The weight value of the subject is obtained by averaging the weight values of the entire body of the subject before the start of the swing.
Therefore, the arithmetic unit 31 functions as a control unit that controls the display of the display device 4.

The time-series data is stored by the sphere detection sensor 21 after the sphere detection sensor 21 detects that the sphere 24 is placed on the support 25 or the marker 70 and resets the device. The data up to the impact point for detecting that the ball 24 on the tool 25 or the marker 70 has been hit and lost is sequentially updated to the oldest data in the storage area of the storage device 33 having an appropriate storage capacity. The data is stored endlessly so that the data after the impact point is stored in another storage area having a storage capacity corresponding to a predetermined time width.

Together with these time series data, the load center corresponding to each of the left and right feet of the subject at the time of address and the load center corresponding to the whole body of the subject, the load ratio of the left foot at the address, the left and right of the subject at the swing start point Center of load corresponding to each foot of the subject and load center corresponding to the whole body of the subject, load center corresponding to the whole body at the start point of body turn, load center corresponding to the whole body at the top position, load ratio of the right foot at the top position The load center corresponding to the whole body at the swing-down point, the load center corresponding to the whole body at the impact point, the load ratio of the left foot at the impact point, and the load center corresponding to the whole body at the finish point are also stored in the storage device 33. Remembered. Each load center at the time of address is obtained by averaging the positions of the load centers before the swing start point detected as described later.

Next, a process in which the club detection sensor 22 and the arithmetic unit 31 detect the swing start point which is one of the characteristic points in the golf swing will be described. In the storage device 33, together with the above-mentioned load and load center data,
Information on whether or not the club detection sensor 22 has detected the passage of the club head is also stored in time series. Based on this stored information, the arithmetic unit 31 excludes the time of about 100 mS immediately before the impact point and sets the time when the first club detection sensor 22 detects the passage of the club head as the swing start point by tracing back the time from the impact point. To detect.

Next, a process in which the arithmetic unit 31 detects a body turn starting point which is one of the characteristic points in the golf swing will be described. Of the load and load center data obtained by the computing device 31 as described above and stored in the storage device 33, the time change of the load on the lower leg of the subject in the backswing direction shown in FIG. 4, that is, the present embodiment. Since the device configuration for a right-handed test subject is illustrated by way of example, when the load on the right foot changes with time, the search starts from the data corresponding to the swing start point indicated by point A in FIG. The position of B on the time axis is detected as the body turn start point.

Next, the process in which the arithmetic unit 31 detects the top position which is one of the characteristic points in the golf swing will be described. The component in the left-right direction, that is, the X direction, of the load-series time series data corresponding to the entire body of the subject, which is obtained by the arithmetic unit 31 as described above and stored in the storage device 33, is time-differentiated to obtain the load-center X-value. The time change of the moving speed in the direction is calculated. In the time change of the moving speed in the X direction illustrated in FIG. 5, the point F, which is traced back for a predetermined time from the data of the impact point detected by the sphere detection sensor 21 indicated by the point E in FIG. Point F indicating the reference point
The data is searched backward in the direction from, and the sign of the moving speed in the X direction first reverses from negative to positive, that is, the point G at which the direction of the moving speed in the X direction first reverses is set as the top position. To detect. The time interval from the point E indicating the impact point to the point F, which is the reference time point, is set as a top position because the direction of the moving speed may be in the backswing direction immediately before the impact point. In order to prevent detection, this time interval is preferably about 200 mS.

Next, a process in which the arithmetic unit 31 detects a swing-down point which is one of characteristic points in a golf swing will be described. Among the data obtained by the arithmetic unit 31 as described above and stored in the storage unit 33, the point indicating the top position obtained as described above in the time change 90 of the right foot load and the time change 91 of the left foot load shown in FIG. From H,
Up to a point I indicating the impact point detected by the ball detection sensor 21 corresponds to the downswing. During this downswing, within the time t from the point J, which indicates the time when the load on the left and right feet of the subject becomes equal, to the side where time elapses and t ′ to the side that goes back time, the foot on the upper hand side in the downswing direction. The rate of change of the load on the right foot, that is, the time differential value is calculated. It is suitable that both the time widths t and t'are about 50 mS. The point K indicating the time point when the absolute value of the change rate of the time change 90 of the right foot load becomes the minimum value is detected as the swing-down point.

It should be noted that 0.2 seconds after the impact point detected by the ball detection sensor 21 is detected as a finish point which is one of the characteristic points in the golf swing. Therefore, the arithmetic unit 31, the ball detection sensor 21, and the club detection sensor 22 function as a feature point detection unit S that detects a feature point on the golf swing.

Next, the operation of this device in use will be described with reference to the flowchart of FIG. 7 and the display examples of FIGS. 8 to 10. In the flowchart of FIG. 7, after the power switch (not shown) is turned on to start the device, the operator sets the operation mode of the device from the console 34 (step # 1). There are two operation modes, a reference trajectory display mode and a reference trajectory non-display mode. In the reference locus display mode, the movement locus of the load center corresponding to the entire body of the subject, which is stored in the storage device 33 as past data, is used as the reference data together with the display data regarding the new swing and the graphic display device 4a.
In the reference trajectory non-display mode, the reference data is not displayed and only the display data regarding the new swing is displayed.

When either one of these two modes is selected to complete the setting of the operation mode, it is determined in step # 2 whether or not the operation mode is set to the reference locus display mode. If the operation mode is set to the reference locus non-display mode, the process proceeds to step # 5 without doing anything. If the reference locus display mode is set, the reference locus 40 and the reference locus 40 on the reference locus 40 are set. 42 to 48 indicating respective characteristic points (address, swing start, body turn start, top, swing down, impact, and finish points) on the graphic display device 4a (step # 4), and step # Go to 5. Of the movement loci of the load center corresponding to the entire body of the subject stored in the storage device 33 as past data, the locus designated by the subject on the console 34 is configured to be the reference locus 40. ing.

In step # 5, the ball detection sensor 21
It is determined whether or not the sphere 24 is placed on the support tool 25 or the marker 70 based on the detection information of 1., and if the sphere 24 is not on the support tool 25 or the marker 70, the load corresponding to the entire body is obtained. The center of load and the center of load corresponding to each of the left and right feet are displayed in real time, and the process returns to step # 5.
That is, the detection data of the load detection sensor D is fetched (step # 14), and as shown in the display example of FIG. 8, the arithmetic processing is performed, and the load center corresponding to the whole body and the load center corresponding to each of the left and right feet. Is calculated (step # 15) and displayed on the graphic display device 4a as the load center point 50 of the left and right feet and the load center point 51 of the whole body, and the ratio of the load of the left and right feet to the total load (that is, , WL /
WT and WR / WT) to obtain the graphic display device 4a
In the display columns 52 provided at the left and right ends of the display screen, the ratio display points 53 are displayed so that the larger the ratio value is, the higher it is (step # 16). Note that the display example of FIG. 8 illustrates the case where the reference trajectory display mode is selected in step # 1. After performing this screen control, it is determined whether or not the mode change switch of the console 34 is pressed (step # 17). If it is pressed, the process returns to step # 1 and the operation mode can be set. If it is not pressed, the process returns to step # 5.

In step # 5, the ball 24 is moved to the support 2
5 is placed on the marker 70 or the marker 70, the device is in a reset state, load data of a new swing is collected, the data is calculated, and the load center and the left and right feet corresponding to the whole body are collected. The collected data is stored in the storage device 3 while the load center etc. corresponding to each is displayed in real time.
Remember in 3. That is, the stored data such as the reference trajectory and the display on the graphic display device 4a are left as they are, and the stored data corresponding to the previous swing and the display on the graphic display device 4a are cleared (step # 6). Then, the detection data of the load detection sensor D is taken in (step # 7), and the load and the load center of the whole body, the load center corresponding to each of the left and right feet, and the ratio of the load of each of the left and right feet to the total load. Is calculated and stored in the storage device 33, and the calculation result is displayed on the graphic display device 4a as the load center point 50 of the left and right feet, the load center point 51 of the whole body, and the ratio display point 53 (step # 8 and # 9).

After this screen control, it is judged whether or not the swing has already ended by whether or not a predetermined time has elapsed from the impact point (step # 10), and if the predetermined time has not elapsed, step # Return to position 7. When it is determined that the swing has already ended after a predetermined time has passed from the impact point, as shown in FIG. 9, the movement center 55 of the load center of the entire body and the left and right feet of the completed swing are shown. Moving trajectory 5 of the corresponding load center
6, 57 and the load ratio locus 70 of the entire body is displayed.
In addition, marks 59 to 65 indicating each characteristic point (address, swing start, body turn start, top, swing down, impact, and finish points) are displayed on the movement locus 55 of the load center of the entire body. On the moving loci 56, 57 of the load centers corresponding to the left and right feet, respectively, a mark 58 indicating the load centers corresponding to the left and right feet of the subject at the time of address is displayed, and the load ratio locus 70 of the entire body is displayed. Marks 60, 62, and 64 indicating the feature points of the swing start, top, and impact are displayed on the top (step #
11).

Further, at the upper end of the display screen of the graphic display device 4a, an address left foot load ratio 66 indicating a ratio of a left foot load to a subject's weight value at an address, and a ratio of a right foot load to a subject's weight value at a top position. And a top right foot load ratio 67 indicating the above, and an impact left foot load ratio 68 indicating the ratio of the left foot load to the weight value of the subject at the impact point. Note that FIG. 9 also shows a display example when the reference trajectory display mode is selected, as in FIG. 8, and the ratio display point 53 in the display column 52 is shown.
The indication of indicates the state of the impact point.

Further, as shown in FIG. 10, the time change data 70 of the load ratio of the whole body and the time change data 71, 72 of the load ratio of the left and right feet are displayed on the plotter 4b (step # 11). And this plotter 4b
In the display of, the time axis indicating the swing start time, the top time, and the impact time is displayed together with the marks 60, 62, 64 indicating the swing start time, the top time, and the impact time, respectively. It should be noted that the display of the load center on the graphic display device 4a includes the data from the swing start point to the finish point, the time change data 70 of the load ratio of the graphic display device 4a, and the time change of the load ratio on the plotter 4b. The data 71 and 72 are displayed for a predetermined time before and after the impact point.

After that, if the measured load and load center data are not saved, the process returns to the position where the presence or absence of the sphere 24 is detected, and if saved, the measured data is transferred to the data saving area of the storage device 33 ( Steps # 12 and # 1
3) Return to the position of step # 5.

[Other Embodiments] Other embodiments of the present invention will be listed below. In the above-mentioned conventional example, the time change of the load ratio displayed on the graphic display device 4a and the plotter 4b is displayed in a state in which the characteristic points of the start of swing, the top, and the impact can be identified, but other characteristic points (body turn (Start, swing down, finish, etc.) may be displayed in a distinguishable state. In the above-mentioned conventional example, the graphic display device 4a shows the two-dimensional loci of the load center of the whole body, the left and right feet respectively, and the time change of the load ratio of the whole body, and the plotter 4b shows the load of the whole body and the left and right feet respectively. Although the time change of the ratio is displayed,
The display of both may be replaced and displayed. In the above conventional example, the time change of the load ratio is displayed on both the graphic display device 4a and the plotter 4b.
You may make it display the time change of a load on the plotter 4b. In the above-mentioned conventional example, the weight value of the subject is calculated by averaging the load values of the entire body of the subject before the start of the swing, but the weight value of the subject may be input at the console 34.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a plan view of a golf training machine to which the present invention is applied.

FIG. 2 is a side view of a golf training machine to which the present invention is applied.

FIG. 3 is a block diagram of a golf training machine to which the present invention is applied.

FIG. 4 is a diagram showing detection of a body turn start point.

FIG. 5 is a diagram showing detection of a top position.

FIG. 6 is a diagram showing detection of a swing-down point.

FIG. 7 is a flowchart according to an embodiment to which the present invention is applied.

FIG. 8 is a display example of a load center and the like according to an embodiment to which the present invention is applied.

FIG. 9 is a display example of a load center and the like according to an embodiment to which the present invention is applied.

FIG. 10 is a display example of a time change of a load ratio according to an embodiment to which the present invention is applied.

[Explanation of symbols]

 1 Swing Table 4 Display Means 31 Control Means C Club M Load Measuring Means S Feature Point Detecting Means

Claims (3)

[Claims] 1. A swing table (1) on which a subject who holds a ball hitting tool (C) and hits is placed, and a load measuring means (M) for measuring the load of the entire body of the subject or each of the left and right feet.
A ball hitting operation provided with a control means (31) for storing the measurement result of the load measuring means (M) during the ball hitting operation as time series data, and outputting the stored measurement result to the display means (4). A training machine, wherein the control means (31) divides the measurement result of the load measurement means (M) by the weight value of the subject to obtain a load ratio, and the time-series data of the load ratio is displayed on the display means. (4) A ball hitting practice machine configured to output a two-dimensional trajectory. 2. The load measuring means (M) is configured to measure the load center of the whole body of the subject or each of the left and right feet, and the control means (31) is a two-dimensional form of the load ratio. The locus and the two-dimensional locus of the load center of the whole body of the subject or each of the left and right feet are displayed on the display means (4).
The display is configured to be displayed on the same screen of
The described ball-hit action training machine. 3. A characteristic point detecting means (S) for detecting an address point, a top position, and an impact time point during a hitting motion is provided, and the control means (31) is based on the characteristic point detecting means (S). And outputs the two-dimensional locus of the load ratio to the display means (4) in a state in which the address point, the top position, and the impact time point can be identified, and the load at the address point, the top position, and the impact time point, respectively. The batting action training machine according to claim 1, wherein the ratio is numerically output to the display means (4).