JP2786585B2 - Hitting motion practice machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load measuring means for measuring the center of load of the entire body or the right and left feet of a subject on a swing table, and the body of the subject based on the measurement results of the load measuring means. The present invention relates to a hitting ball training machine provided with control means for displaying on the display means in a state where the load center of the whole or each of the right and left feet can be recognized as a change on a two-dimensional plane in plan view of the swing table.

[0002]

2. Description of the Related Art In such a hitting ball training machine, when a subject swings on a swing table, a load measuring means measures a load center during the hitting motion, and a control means displays the measured load center. To be displayed. The display of the load center on the display means is displayed so that it can be recognized as a change on a two-dimensional plane in a plan view of the swing table. The subject or the like observes the display of the load center and determines the position of the load center. You can see how it is moving above.

As a specific display form of the load center, for example, a state of movement of the load center is displayed as a movement trajectory, or the load center is displayed in real time in response to a hitting motion of a subject. Is considered.
Conventionally, by utilizing the fact that the state of movement of the center of load can be displayed as a movement trajectory as described above, when the subject practices the ball-hitting motion, it is ideal as a guide for judging the quality of the ball-hitting motion. It has been considered that a movement trajectory of a load center in a hitting motion considered to be a typical one is displayed as a practice target. The subject can proceed with the practice while comparing the movement trajectory of the target with the movement of the load center in his own hitting motion.

[0004]

However, since the movement locus of the target is the movement locus of the center of the load as described above, it is displayed as a "line". In such a case, it is necessary to closely follow the amount of deviation between the target movement trajectory and the state of movement of the subject's center of load, and it takes time and effort to determine whether the subject's hitting motion is good. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a hitting motion training machine that can easily determine the quality of a hitting motion of a subject.

[0005]

According to the present invention, there is provided a hitting ball training machine comprising: a load measuring means for measuring a load center of the whole body or each of right and left feet of a subject on a swing table; and a measurement result of the load measuring means. Control means for displaying on the display means in a state where the load center of the whole body of the subject or each of the right and left feet can be recognized as a change on a two-dimensional plane in plan view of the swing table based on the And the first
The characteristic configuration is such that the control unit moves along the set appropriate movement trajectory to move the load center along with the hitting ball operation,
The present invention is characterized in that an appropriate range of the load center is displayed on the display means.

A second feature configuration is the control device according to the first feature configuration, wherein the control means determines a footprint of the subject and a position of the footprint on the swing table based on a measurement result of the load measurement means during a hitting operation. To detect the footprint, the load center, and the appropriate range of the load center in a state in which the display means is displayed in a state in which the appropriate range of the load center is associated with the positional relationship on the swing table. is there. According to a third characteristic configuration, in the first or second characteristic configuration, display form instruction means for instructing switching between a backswing side display mode and a downswing side display mode is provided, and the control means comprises: When the display mode is instructed, the back swing side portion of the appropriate range of the load center is displayed on the display means, and when the down swing side display mode is instructed, In that the downswing side portion is configured to be displayed on the display means.

[0007] A fourth characteristic configuration is the above-mentioned first, second or third feature.
In the characteristic configuration, display mode instruction means for instructing switching between a real time display mode and a two-dimensional trajectory display mode is provided, and the control means sequentially measures the load measurement means when the real time display mode is instructed. The load center to be displayed is sequentially displayed on the display means,
When the two-dimensional trajectory display mode is instructed, data during the hitting operation is extracted from the measurement results of the load measuring means, and the load center is set as a two-dimensional trajectory based on the extracted data. In that it is configured to be displayed.

[0008]

According to the first characteristic configuration of the present invention, the display means should set a proper movement trajectory to move the center of load in accordance with the hitting operation, that is, should be a training target in practicing the hitting operation. The appropriate range of the load center is displayed in a state along the movement trajectory considered to be ideal. In other words, the training target is displayed as an appropriate range having a certain width, not just a movement locus of the load center. Therefore, the test subject and the instructor of the test subject can judge whether or not the test subject's hitting motion is good based on whether or not the load center of the test subject moves within the proper range.

According to the second characteristic configuration of the present invention, together with the footprint detected by the control means, the load center of the subject and the appropriate range of the load center are displayed in a state of being associated with the positional relationship on the swing table. Displayed on the means. Therefore, no matter where the subject takes the stance on the swing table, the position at which the stance is taken and the appropriate range of the load center are displayed in a state where the positional relationship is associated. According to the third feature configuration of the present invention, the display area of the appropriate range of the load center differs between when the backswing side display mode is selected and when the downswing side display mode is selected,
The back swing side portion or the down swing side portion of the appropriate range of the load center is displayed, respectively. in this way,
The appropriate range of the area to be compared can be selected by selecting the mode, so the display of the appropriate range of the center of load does not become unnecessarily complicated. it can.

According to the fourth aspect of the present invention, in the real-time display mode, the proper range of the load center and the real-time display of the subject's load center can be displayed. While observing whether or not the ball is in the center, it is possible to practice such as performing a hitting ball motion so that the position of the load center moves within an appropriate range while judging the quality of the position of the load center. In the two-dimensional trajectory display mode, the proper range of the load center and the two-dimensional trajectory of the load center during the swing operation of the subject can be displayed, and whether the two-dimensional trajectory of the subject's load center is within the proper range. Whether the swing motion of the subject is good or not can be determined based on whether the swing motion is successful or not.

[0011]

According to the above-mentioned first characteristic configuration, it is possible to judge whether or not the hitting motion of the subject is good, depending on whether or not the center of the load of the subject moves within the proper range. It is possible to judge the quality of the hitting motion with the trouble of merely observing, and to provide a hitting motion training machine that can easily judge the quality of the hitting motion of the subject. According to the second feature configuration, in addition to the effect of the first feature configuration, no matter where the subject takes the stance on the swing table, the load center is placed in a state where the position of the stance and the positional relationship are associated. Since the appropriate range is displayed, the subject can take a stance at a position corresponding to his / her body type and the like, and the hitting motion training machine can be made more convenient.

According to the third feature configuration, in addition to the effect of the first or second feature configuration, the display of the proper range of the load center is not unnecessarily complicated, and the movement of the subject's load center can be changed. This makes it possible to accurately compare the load with the appropriate range of the center of load, thereby making the hitting motion training machine more convenient. According to the fourth aspect, in addition to the effects of the first, second, or third aspect, the practice in the real-time display mode or the practice in the two-dimensional trajectory display mode is selected and performed. This makes it possible to implement a variety of practice modes, making it possible to make the hitting motion practice machine more convenient.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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, 4 is a display device as a display means. The golf practice machine of the present embodiment processes the detection data of the load detection sensor D provided on the swing table 1 by the processing device 3 during the swing, displays the center of the load on the display device in real time, and displays the load or This is temporarily stored as time-series data of the load center, and is displayed after the end of the swing.

Hereinafter, each device will be described. Swing table 1
Are two load detection tables 10, 1 corresponding to the left and right feet, respectively.
The load detecting table 10 includes four load cells 12, 13, 14, and 15 as load detecting sensors D.
The corners are supported, and the load detection table 11 is supported at the four corners by four load cells 16, 17, 18, and 19 as load detection sensors D. On the swing table 1, the subject holding the club C swings. At this time, the load applied to the swing table 1 is two load detection tables 10 and 11.
Load cells 12, 13, 14, 1 supporting the
5, 16, 17, 18, and 19, the load and the load center of the subject, and further, the load centers corresponding to the left and right feet of the subject are obtained from these outputs as described later.

A support 25 on which a ball 24 is placed when practicing swinging with a wood club or the like is mounted on the ball mounting table 2. On the swing table 1 side of the support 25, an iron club or the like is mounted. A marker 70 indicating a position at which a ball is directly mounted on the ball mounting table 2 during swing practice is drawn. A ball detection sensor 21 for detecting the presence or absence of the ball 24 is provided on both sides of the support 25 and the marker 70 across the club head passage. The ball detection sensor 21 functions as a reset switch for starting a new swing when the ball 24 is placed on the support 25 or the marker 70, and is used when the subject actually hits the ball 24. Detects the point at which the ball 24 on the support 25 or the marker 70 is hit by the club C and disappears from the support 25 as an impact point which is one of the characteristic points in the golf swing.

A club detecting sensor 22 for detecting the movement of the club C to the backswing side is provided on both sides of the support 25 and the marker 70 across the club head passage on the backswing side. Each of the ball detection sensor 21 and the club detection sensor 22 is configured by a transmission type optical sensor. The arrangement of these sensors is such that the light emitting portion 21a of the ball detection sensor 21 is located on the opposite side of the swing head 1 of the club head passage.
And a light emitting unit 22a of the club detection sensor 22 are installed,
On the opposite side of the light emitting portions 21a and 22a across the club head passage, a light receiving portion 21b of the ball detection sensor 21 and a light receiving portion 22b of the club detection sensor 22 are respectively provided.
It is installed facing 22a.

The detection light emitted from the light-emitting portion 21a of the ball detection sensor 21 is projected toward the light-receiving portion 21b located diagonally below, and the detection light is reflected by the support 25 and the ball 24 above the marker 70. When the ball 24 is placed on the support 25 or on the marker 70, the presence or absence of the ball 24 can be detected in the same manner. The projection path of the detection light of the club detection sensor 22 is set so as to be substantially parallel to the projection path of the detection light of the sphere detection sensor 21. Even when the sphere 24 is placed on the support 25, the marker 70 Even when a ball is placed on the ball, the passage of the club can be reliably detected. Drive circuits for the ball detection sensor 21 and the club detection sensor 22 are built in the control box 26.

The processing unit 3 includes an arithmetic unit 31 for performing arithmetic processing for determining the load and the center of load, sequence control of the apparatus, an I / O interface 32 for transferring various data, and measuring information of the load and the center of the load. 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, a movement locus of a load center even when a subject performs a swing, etc. Is displayed on the display device 4. Swing switch 3
In FIG. 6, a start switch 36a for instructing the start of data collection for display on the display device 4 and an operator of a golf practice machine, for example, an instructor of a swing practice, observe the subject's swing motion while observing the subject's swing motion. There is provided an impact switch 36b which is pressed at a time point assumed to be the time point of the impact to input the time point of the impact to the arithmetic unit 31. The display device 4 includes a graphic display device 4a and a plotter 4b. The graphic display device 4a has a two-dimensional trajectory of the load center of the entire body and the right and left feet, and the plotter 4b has a two-dimensional trajectory of the load ratio of the whole body. (Time change) is displayed.

Next, the process in which the arithmetic unit 31 calculates the load and the center of the load will be described. The subject holding the club C takes a stance by standing at the approximate center of the swing table 1 with the left and right feet resting on the two load detection tables 10 and 11, respectively. Taking the load detection table 10 on which the subject puts the left foot as an example, the outputs of the load cells 12, 13, 14, and 15 at the four corners of the load detection table 10 are previously adjusted by zero adjustment in the load converter 100, respectively. Since the loads have been offset, the total WL of the outputs W1, W2, W3, and W4 is the load on the left foot of the subject on the load detection table 10. That is, WL = W1 + W2 + W3 + W4 Further, at this time, depending on the relationship between the position where the load is applied and the installation positions of the four load cells 12 to 15, the load output of each load cell is different. You can find the center.

That is, the left-right component X and the front-rear 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 a width a in the X direction and a width Y in the Y direction. In the case of being disposed at the four corners of the rectangular load detection table 10 of b, it can be obtained from X = (W2 + W3) × a / WL Y = (W3 + W4) × b / WL. Note that the load cells 12, 13,
Even when the arrangement of 14 and 15 is not at the four corners of the rectangle, the center of load can be obtained by performing a correction unique to the geometric arrangement of the load cells. If three or more load cells are provided, the center of load applied to the swing table 1 can be obtained. The load detection table 11 on which the subject places the right foot is also configured in the same manner as the load measuring device 10, and the load center of the load applied to the load detection table 11 can be obtained in the same manner as described above. That is, the center of load corresponding to each of the right and left feet of the subject can be obtained.

For the load on both feet of the subject, that is, the entire body and the center of the load, the load applied to the load detecting table 11 is represented by W
Let R be the load cell 16 as in the case of the left foot.
From the outputs W5 to W8 of １９19, 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 subject's left foot and the load center corresponding to the right foot. Assuming that L is on a line segment connecting the left and right load centers, it is located at a position WR × L / WT away from the load center corresponding to the left foot, and this may be calculated.

As shown in FIG. 3, eight load cells 12 to
Outputs W1 to W4 and W5 to W8 of 15 and 16 to 19
Is a load converter 100 having a measurement bridge circuit and an A / D converter. After compensating for the weight of the swing table 1 as described above, the load converter 100 is sampled at regular intervals to obtain a digital value. Then, the data is sequentially taken into the processing device 3 via the I / O interface 32. The load WT, the load center, and the load center corresponding to each of the left and right feet of the subject are obtained by the arithmetic unit 31 in the processing device 3 according to the above-described formula.

When the operator 34 instructs to create a footprint at the console 34, the arithmetic unit 31 calculates the load center data of the left and right feet before the set time from the instruction time.
The foot shape f of the subject and the position of the foot shape f on the swing table 1 are detected, the foot shape f is displayed on the graphic display device 4a of the display device 4, and the measurement results (the whole body or the load center of each of the left and right feet) are measured. ) As a dot mark (that is, as shown in FIGS. 9 and 10, the load centers of the right and left feet are displayed by marks 48, and the load centers of the entire body are displayed by marks 49). ) Is configured to be displayed.

The creation of the footprint f by the arithmetic unit 31 is as follows.
Of the load center data of the left and right feet before the set time is instructed from the time at which the footprint creation is instructed, the position of the load center located on the toe side on the swing table 1 is extracted as the reference position P ₀ , Based on the position P ₀ , the left and right footprints f are formed as described below.

Hereinafter, the reference position P₀Create a footprint f based on
The method of creating a footprint is described in FIG. 7 using the left foot as an example.
I will tell. The vertical width AL of the foot is independent of the subject's foot size
Initially set (approximately 300 mm),
Circle f₁(Larger ellipse) and f_Two(Small ellipse) and
Is formed. Note that the ellipse f in this embodiment is₁of
The major axis is (AL x 4/5) and the minor axis is (AL x 2/5)
Set and the ellipse f_TwoThe major axis is (AL x 3/5)
In addition, the minor axis is set to (AL × 3/10). Soshi
And the reference position P₀Ellipse at (AL × 3/10)
Circle f₁Center point P of ₁And set the center point P₁More (A
L × 3/10) ellipse f_TwoCenter point P of_TwoThe set
I do.

In this embodiment, however, the center point P ₂ is shifted inward by dx (about 10 mm) with respect to the center point P _1, but this is for bringing the footprint f closer to the actual footprint. Yes, it is not necessary to shift. In addition, footprint f
Is parallel to the longitudinal component Y of the load center,
It is set in advance.

Further, the arithmetic unit 31 stores the time series data of the load, the time series data of the load center corresponding to each of the right and left feet of the subject, and the time series data of the load center corresponding to the whole body of the subject. At the same time, the load corresponding to the whole body of the subject and each of the right and left feet is divided by the subject's weight value to obtain a load ratio, and time-series data of the load ratio is stored in the storage device 33. 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 and the load detection sensor D
Functions as load measuring means M for measuring the load center of the entire body of the subject or the right and left feet of the subject on the swing table 1.

The above-mentioned time-series data is stored by the ball detection sensor 21 when the ball detection sensor 21 detects that the ball 24 is placed on the support 25 or the marker 70 and resets the apparatus. 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, or from the point in time when the start switch 36a of the swing switch 36 is pushed and the device is reset,
A storage area having a storage capacity having a storage capacity corresponding to a time-series data amount of about 2 seconds in the storage device 33 until the time point when the impact switch 36b of the swing switch 36 is pressed and input as an impact point is stored. The data is stored endlessly in such a manner that the oldest data is sequentially rewritten with the latest data, and the data after the impact point is stored in another storage area having a storage capacity corresponding to a predetermined time width. . The predetermined time width corresponding to the storage area for storing data after the impact point is 0. 0 when the impact point is detected by the ball detection sensor 21 or when the impact point is input from the swing switch 36. 5 seconds. In addition, the time when 0.2 seconds have elapsed from the impact point is detected as the end point of the swing operation, that is, the finish point. Along with these time series data, the load center of the whole body and the left and right feet and the load of the left and right feet at each feature point (address point, body turn start point, top position, swing down point, impact point, finish point) The ratio is also stored in the storage device 33.

Each load center at the address point 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 a swing start point which is one of the characteristic points in the golf swing will be described. The storage device 33 stores, in chronological order, information as to whether or not the club detection sensor 22 has detected the passage of the club head, in addition to the data on the load and the load center. Based on the stored information, the arithmetic unit 31 sets the time when the first club detection sensor 22 detects the passage of the club head retroactively from the impact point, except for the time of about 100 ms immediately before the impact point, as the swing start point. To detect.

Next, a process in which the arithmetic unit 31 detects a body turn start 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 arithmetic unit 31 and stored in the storage device 33 as described above, the time change of the load on the lower leg of the subject in the backswing direction shown in FIG. FIG. 4 illustrates a device configuration for a right-handed subject, so that a search is started from the data corresponding to the swing start point indicated by point A in FIG. The position on the time axis of B is detected as the body turn start point.

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

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

Next, the operation of the apparatus in use will be described with reference to the flowchart of FIG. 8 and the display examples of FIGS. In the flowchart of FIG. 8, after the power switch (not shown) is turned on to start the apparatus, the operator sets the operation mode of the apparatus from the console 34 (step # 1), and proceeds to step # 2. There are two operation modes to set here, a proper range display mode and a proper range non-display mode. When the proper range display mode is set, the backswing side display mode and the downswing side display mode are further added. Set one of the modes.

In the proper range display mode, the moving trajectory of the load center in the swing motion of an expert golfer or the like is statistically processed in advance to obtain a set proper moving trajectory which is considered to be the ideal trajectory of the load center. The area along the set proper movement locus and having a set width is displayed as an appropriate range. As shown in FIG. 14, the above-mentioned set width is equal to the set appropriate movement trajectory 2 in the set appropriate movement trajectory 200 of the load center of the whole body.
The center has a width wa in the front-rear direction of the subject around 00, and the set proper movement trajectory 201 of the load center of each of the right and left feet has a width wb in the left-right direction of the subject around the set proper movement trajectory 201, Each of the appropriate ranges is displayed in a strip shape. The width wa is set to about 5% of the front and rear length (30 cm) of the footprint, and the width wb is set to about 6.7% of the maximum left and right width (12 cm) of the footprint. The setting can be changed.

When the display mode is set to the appropriate range display mode and the display mode is set to the backswing side display mode, the backswing side portion before the top position in the appropriate range is displayed on the graphic display device 4a. When the display mode is set to the downswing side display mode, a portion on the downswing side after the top position in the appropriate range is displayed on the graphic display device 4a. In the appropriate range non-display mode, only the display data relating to a new swing is displayed without displaying the data in the appropriate range.

When the setting of the operation mode is completed, it is determined in step # 2 whether or not the ball 24 is placed on the support 25 or the marker 70 based on the detection information of the ball detection sensor 21. If the sphere 24 is not on the support 25 or on the marker 70, the detection data of the load detection sensor D is taken in (step # 11), and an arithmetic process is performed, and the load center and the left and right feet corresponding to the entire body are respectively processed. The corresponding load center is determined (step # 12), and it is determined whether or not the start switch 36a of the swing switch 36 is pressed (step # 13).

If the start switch 36a is not pressed, it is determined whether or not an instruction to create a footprint is issued (step # 14). If there is no instruction to create a footprint, as shown in the display example of FIG. The load center point 48 of the left and right feet and the load center point 49 of the entire body are actually displayed on the graphic display device 4a (display in a state where the outer periphery 50 of the swing table 1 is displayed). Is calculated (WR / WT), and displayed as a load ratio display point 62 in a display column 61 provided at the lower end of the display screen of the graphic display device 4a (step # 14). This load ratio display point 6
In the display position of No. 2, the left end of the display field 61 is WR / WT = 0.
WR / WT = 1 at the right end, and the period is proportionally distributed. That is, if the load ratio between the left and right feet is 50:50, the display column 61 is located at the center, and if the load ratio is 0: 100, the display column 6 is displayed.
1 is displayed on the right end, and conversely, if it is 100: 0, it is displayed on the left end of the display column 61.

In the display field 61, in addition to the above-mentioned load ratio display point 62, desirable values as WR / WT values at the address point, the top position and the impact point are obtained in advance, and the address load ratio display 42 , Top load ratio display 43
And an impact load ratio display 44. The lateral widths of the address load ratio display 42, the top load ratio display 43, and the impact load ratio display 44 are approximately 0.1 in the value of WR / WT, but can be changed.

If creation of a footprint is instructed (step # 1)
4) The footprint f is detected based on the data of the load centers of the right and left feet before the set time (about 50 mS in this embodiment) from that time, and the footprint f is displayed in an enlarged display.
However, when the footprint f is displayed, if the operation mode is set to the appropriate range display mode (step # 16), FIG.
As shown in FIG. 0 and FIG. 11, the appropriate range 40 of the left and right feet and the appropriate range 41 of the entire body are displayed in accordance with the position of the footprint f (step # 17). The alignment between the appropriate range 40 of the left and right feet and the appropriate range 41 of the whole body and the detected footprint f is determined by the positions of the left and right footprints when the respective appropriate ranges 40 and 41 are obtained, and the positions of the detected left and right footprints f. So that the positions match
The display of each appropriate range 40, 41 is adjusted by scaling.

The display shown in FIG. 10 shows a case where the display mode is set to the backswing side display mode.
The display shown in FIG. 1 shows a case where the display mode is set to the downswing side display mode. If the operation mode is set to the appropriate range non-display mode (step # 15), the display of the appropriate range and the like is not performed (step # 18). After performing the screen control, it is determined whether or not the operation mode change switch of the console 34 is pressed (step # 1).
9) If the button has been pressed, the flow returns to step # 1 so that the operation mode can be set. If not, the flow returns to step # 2. The instruction for creating a footprint is configured so that a companion (or an instructor or the like) operates the console 34 to perform the instruction.

In the state where the process branches from step # 2 to step # 11 and returns from step # 19 to step # 2 again, the real-time display mode is used in which the load centers of the entire body and the right and left feet are displayed in real time. .

In step # 2, the ball 24 is
5 or on the marker 70, the device is in a reset state, the load data of a new swing is collected, the data is calculated, the load center corresponding to the whole body, and the right and left feet The collected data is stored in the storage device 3 while displaying the corresponding load centers and the like in real time.
Go to 3 That is, the stored data such as the proper range 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 # 3). Then, the detection data of the load detection sensor D is taken in (step # 4), 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 by the arithmetic processing and stored in the storage device 33, and the calculation result is displayed on the graphic display device 4a as the load center point 48 of the right and left feet, the load center point 49 of the whole body, and the load ratio display point 62 (step). # 5 and # 6).

After this screen control, it is determined whether or not the swing has already been completed based on whether or not a predetermined time has elapsed from the impact point (step # 7). Return to position 4. When it is determined that the swing has already been completed after a predetermined time has elapsed from the impact point, as shown in FIG. 12, the movement locus 51 of the load center of the entire body and the left and right feet for the completed swing are respectively shown. Is displayed, and the characteristic points (address point, body turn start point,
Marks 53 to 58 indicating the top position, swing-down point, impact point, and finish point) are displayed (step # 8).

FIG. 12 also shows a display example in the case where the appropriate range display mode is selected and the downswing side display mode is selected, as in FIG.
In the display of FIG. 12, unlike the case of the real-time display mode of FIGS. 10 and 11, not the entire display of the swing table 1, but the footprint f and the existing portion of the display data of the center of load are enlarged and displayed. And further, as shown in FIG.
The time change data 63 of the load ratio of the whole body is
b (step # 8). Then, on the display of the data 63 of the time change of the load ratio of the whole body, each characteristic point (the body turn start point, the top position, the swing-down point,
Mark 54 indicating impact point and finish point)
To 58 are displayed.

The display of the load center on the graphic display device 4a is based on the data from the swing start point to the finish point, and the plotter 4b is based on the display of the time change data 63, 64 of the load ratio on the impact point. The data for a predetermined time before and after is displayed. Thereafter, when the measured load and the data of the load center are not stored, the process returns to the position for detecting the presence or absence of the ball 24 (step # 2). When the data is stored, the measured data is transferred to the data storage area of the storage device 33. Later (Steps # 9 and # 1
0), returning to the position of step # 2.

In the state where the flow branches from step # 2 to step # 3 and returns to step # 2 again, a two-dimensional trajectory display mode for displaying a change in the position of the load center of the subject as a two-dimensional trajectory is provided. In addition, not only when the ball detection sensor 21 detects the existence of the ball 24, but also in the two-dimensional trajectory display mode,
Also when the start switch 36a of the swing switch 36 is pressed, the process shifts by branching from step # 13 to step # 3. When the mode is shifted to the two-dimensional trajectory display mode by the start switch 36a, as described above, the companion pushes the impact switch 36b to input the impact point.

Accordingly, the ball detection sensor 21 and the start switch 36b of the swing switch 36 function as display mode instructing means N for instructing switching between the real-time display mode and the two-dimensional trajectory display mode. It functions as a display form instruction means T for instructing switching between the side display mode and the downswing side display mode. In addition, based on the measurement result of the load measuring means M, the arithmetic unit 31 can recognize the load center of the entire body of the subject or each of the right and left feet as a change on a two-dimensional plane of the swing table 1 in plan view. It functions as control means for displaying on the display means 4.

[Other Embodiments] Other embodiments will be listed below. In the above embodiment, the case where the present invention is applied to a golf practice machine is illustrated, but the present invention can also be applied to a batting practice machine or the like with a similar device configuration.

In the above embodiment, when the appropriate range of the load center is displayed, the set appropriate movement trajectory is displayed with a width in the front-rear direction or the left-right direction. On the other hand, you may give width to right and left. Further, the width may be changed according to the position of the set appropriate movement trajectory, instead of a constant width along the set appropriate movement trajectory, or the width may be changed on the left and right sides of the set appropriate movement trajectory. .

In the above embodiment, the subject's footprint is detected, and an appropriate range or the like is displayed based on the location of the footprint. However, the position where the subject should take a stance is displayed on the swing table 1 with a mark. In this way, the display of the appropriate range and the like may be performed at the fixed position.

In the above embodiment, the footprint of the subject is detected from the center of the load on each of the left and right feet of the subject during a set time from when the footprint detection instruction is issued. Is possible, for example,
In the previous swing motion of the subject, the footprint may be detected based on the position of the front end in the movement locus of the load center of each of the right and left feet, or may be detected based on the address position of the subject, Alternatively, the detection may be performed based on the movement trajectory of the load center of each of the left and right feet when the subject shakes the body in the front-back direction.

In the above embodiment, the moving locus of the center of the load is displayed on the graphic display device 4a, but may be displayed on the plotter 4b.

In the above-described embodiment, when displaying the appropriate range of the load center, the movement trajectory of the load center in the swing motion of an expert golfer or the like is statistically processed and the setting trajectory considered to be the ideal movement trajectory of the load center. Although the movement trajectory is determined, the movement trajectory may be determined as an appropriate movement trajectory of the user's swing from his or her own swing operation. Alternatively, the moving trajectory of a plurality of load centers such as an advanced person may be set as a proper moving trajectory, and an appropriate range of the load center may be displayed along the plurality of proper moving trajectories. Note that the appropriate range of the load center does not necessarily need to completely include the set appropriate movement locus, and the appropriate range of the load center is displayed in a state where the set appropriate movement locus partially protrudes from the appropriate range of the load center. You may do it.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.

[Brief description of the drawings]

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

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

FIG. 3 is a block diagram of a golf practice 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 diagram illustrating creation of a footprint.

FIG. 8 is a flowchart according to an embodiment to which the present invention is applied.

FIG. 9 is a display example according to an embodiment to which the present invention is applied.

FIG. 10 is a display example according to an embodiment to which the present invention is applied.

FIG. 11 is a display example according to an embodiment to which the present invention is applied.

FIG. 12 is a display example according to an embodiment to which the present invention is applied.

FIG. 13 is a display example according to an embodiment to which the present invention is applied.

FIG. 14 is an explanatory diagram of a display of an appropriate range of a load center according to the embodiment to which the present invention is applied.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 swing table 4 display means 31 control means M load measurement means N display mode instruction means T display form instruction means

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shinya Morimoto 1-1-1, Hama, Amagasaki-shi, Hyogo Prefecture Inside Kubota Technology Development Laboratory Co., Ltd. (72) Inventor Akira Hiwat 1-1, Hama, Amagasaki-shi, Hyogo Inside Kubota Technology Development Laboratory Co., Ltd. (58) Field surveyed (Int. Cl. ⁶ , DB name) A63B 69/36 532 A63B 69/36 541

Claims (4)

(57) [Claims] 1. A load measuring means (M) for measuring the load center of the whole body or each of the right and left feet of a subject on a swing table (1), and based on a measurement result of the load measuring means (M). The control means (3) for displaying on the display means (4) a state in which the load center of the whole body of the subject or each of the right and left feet can be recognized as a change on a two-dimensional plane in plan view of the swing table (1).
1) The hitting motion training machine provided with 1), wherein the control means (31) moves the load center along a set proper movement locus to move the load center along with the hitting motion, and adjusts the proper range of the load center. In the hitting motion training machine configured to cause the display means (4) to display the following. 2. The control means (31) detects a footprint of a subject and a position of the footprint on the swing table (1) based on a measurement result of the load measuring means (M) during a hitting operation. The footprint, the load center, and an appropriate range of the load center are displayed on the display means (4) in a state where the footprint, the load center, and the appropriate range of the load center are associated with the positional relationship on the swing table (1). The hitting motion training machine according to claim 1, wherein 3. A display mode instructing means (T) for instructing switching between a backswing side display mode and a downswing side display mode is provided, and said control means (31) is instructed by said backswing side display mode. When the downswing side display mode is instructed, the back swing side portion of the appropriate range of the load center is displayed on the display means (4). The hitting motion training machine according to claim 1 or 2, wherein a downswing side portion is displayed on the display means (4). 4. A display mode instructing means (N) for instructing switching between a real-time display mode and a two-dimensional trajectory display mode is provided, and said control means (31) is configured to: The load centers sequentially measured by the load measuring means (M) are sequentially displayed on the display means (4). When the two-dimensional trajectory display mode is instructed, the measurement results of the load measuring means (M) are displayed. 4. The apparatus according to claim 1, wherein data during the ball hitting operation is extracted, and based on the extracted data, the load center is displayed on the display means (4) as a two-dimensional trajectory. Hitting motion practice machine.