JP2784311B2 - 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 swing table on which a subject swinging while holding a ball hitting tool is placed, load measuring means for measuring the load centers of the right and left feet of the subject on the swing table, and the load measuring means. The present invention relates to a hitting ball training machine provided with control means for obtaining a subject's stance direction with respect to a reference square direction based on measurement information of the means and displaying information corresponding to the stance direction on a display means.

[0002]

2. Description of the Related Art Such a hitting ball training machine is used for practicing a ball hitting motion such as golfing and batting. It is known that in the practice of the hitting ball operation, whether or not the center of gravity is correctly moved with the hitting ball operation is an important index for forming a correct hitting ball form. Therefore, in such a hitting motion training machine,
Conventionally, the center of load of each of the left and right feet of the subject was measured,
The stance direction of the subject with respect to the reference square direction is obtained based on the measurement information, and information corresponding to the stance direction is displayed on the display means. In other words, the direction of the line connecting the center of load of each of the left and right feet of the subject is determined as the stance direction of the subject, and the relationship between the stance direction and the reference square direction (for example, the direction of one side of the swing table) is displayed. Then, a line having the same inclination (inclination with respect to the reference square direction) as the line connecting the load centers of the left and right feet is displayed, or the subject's inclination angle in the stance direction with respect to the reference square direction is obtained. The angle was displayed numerically.

[0003]

However, in the conventional display, the relationship between the stance direction of the subject and the reference square direction is represented by a line having the same inclination as the line connecting the load centers of the right and left feet as described above. Alternatively, since it is simply displayed as a numerical value indicating the inclination angle of the subject's stance direction with respect to the reference square direction, it is difficult to immediately grasp the direction of the subject's front-back direction, and it is difficult to improve There was room. SUMMARY OF THE INVENTION 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 provided with a display means capable of immediately grasping the front-back direction of a subject.

[0004]

According to the present invention, there is provided a hitting ball training machine that includes a swing table on which a subject swinging while holding a hitting tool is placed, and a load for measuring the load centers of the right and left feet of the subject on the swing table. Measuring means, control means for obtaining the stance direction of the subject with respect to the reference square direction based on the measurement information of the load measuring means, and displaying information corresponding to the stance direction on the display means, provided. The first characteristic configuration is that the control means:
Based on the stance direction, determine the front-back direction of the subject with respect to the reference square direction, the display means,
The present invention is characterized in that a reference line corresponding to the reference square direction and a direction display straight line extending from the midpoint of the reference line as a starting point and extending in the front-rear direction of the subject are displayed. A second characteristic configuration is that the control unit is configured to cause the display unit to display an arc connecting both ends of the reference line and an end of the direction display straight line.

[0005]

According to the first characteristic configuration of the present invention, for example, the direction perpendicular to the stance direction of the subject is the longitudinal direction of the subject, and the longitudinal direction of the subject with respect to the reference square direction is obtained. And a display line extending from the midpoint of the reference line to the subject and extending in the front-rear direction of the subject. That is, the front-back direction of the subject with respect to the reference square direction is displayed in the direction of the direction display straight line with respect to the reference line. Therefore, for example, in the case of a right batter, a square stance is provided if the direction display straight line is perpendicular to the reference line, a closed stance is provided if tilted to the right, and an open stance is provided if tilted to the left. In addition, the degree of inclination of the body can be determined based on the amount of inclination of the direction display straight line. According to the second feature configuration of the present invention, in addition to the display according to the first feature configuration, an arc connecting the both ends of the reference line and the end of the direction display straight line is displayed.

[0006]

According to the first characteristic configuration of the present invention, in the hitting ball training machine, the subject sees the direction of the direction indicating straight line with respect to the reference line, and knows the subject's front-back direction with respect to the reference square direction. Therefore, it was possible to immediately grasp what direction the subject's front-back direction was in the reference square direction. According to the second characteristic configuration of the present invention, since the arc connecting the both ends of the reference line and the end of the direction display line is displayed, the end of the direction display line is placed on the arc as the direction of the subject's body changes. Will be moved. Therefore, by observing the position of the end of the direction display straight line on the arc, it is possible to know which direction the front-back direction of the subject's body is facing, making the display more easily viewable. Has arrived.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a golf practice machine to which the present invention is applied 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.

The swing table 1 includes two load detection tables 10 and 11 corresponding to the left and right legs, respectively.
Are four load cells 12, 1 as load detection sensors D
Four corners are supported by 3, 14, and 15, and the load detection base 11 is supported at 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 as a hitting tool swings. At this time, swing table 1
Is applied to eight load cells 12, 13, 14, 15, 16, supporting two load detection tables 10, 11.
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. The presence or absence of the ball 24 is detected on both sides of the support 25 and the marker 70 across the club head passage, and the ball 24 is placed in the support 2.
When the ball is placed on the support 5 or the marker 70, it functions as a reset switch when starting a new swing, and the ball 24 on the support 25 or the marker 70 is hit by the club C on the support 25. A ball detection sensor 21 is provided for detecting a point at which the ball has disappeared from the golf swing as an impact point which is one of the characteristic points f of the operation in the golf swing.
On both sides of the support 25 and the marker 70 across the club head passage on the back swing side, a club detection sensor 22 for detecting the movement of the club C to the back swing side is provided.

The ball detecting sensor 21 and the club detecting sensor 2
Each of the reference numerals 2 includes a transmission type optical sensor. The arrangement of these sensors is such that the light emitting portion 21a of the ball detecting sensor 21 and the light emitting portion 22a of the club detecting sensor 22 are installed on the opposite side of the swing head 1 in the club head passage, and the club head of the light emitting portions 21a, 22a is provided. On the opposite side of the 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 installed so as to face the respective light emitting portions 21a, 22a. The detection light emitted from the light emitting portion 21a of the ball detection sensor 21 is received by the light
b, the detection light is made to pass through the area where the sphere 24 above the support 25 and the marker 70 should exist, and when the sphere 24 is placed on the support 25,
When a ball is placed on the marker 70, the presence or absence of the ball 24 can be similarly detected. 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 When putting a ball on top,
It is possible to reliably detect the passage of the club.
Drive circuits for the ball detection sensor 21 and the club detection sensor 22 are built in the control box 26.

The processing device 3 includes a processing device 31 for performing a calculation process for obtaining the load and the center of the load on the whole body of the subject and each of the right and left feet and a sequence control of the device, and an I / O interface for transferring various data. 32, a storage device 33 for storing load and load center measurement information, a console 34 for selecting an operation mode of the device and inputting various comments, and an external storage device 35 for storing measurement information and the like. I have. Then, the arithmetic unit 31 and the swing table 1
Functions as load measuring means M for measuring the center of load of each of the right and left feet of the subject, and includes a computing device 31 and a storage device 33.
Functions as control means R for obtaining swing information based on the measurement information of the load measuring means M and displaying the swing information on the display device 4. The display device 4 includes a graphic display device 4a and a plotter 4b.

Next, a 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, 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 2 to 15, the load center of the load applied to the load detection table 10 can be obtained from these outputs.

That is, the left-right component X and the front-rear component Y of the load center expressed by the load cell 12 in FIG. 1 as the origin are represented by four load cells 12 to 15 having 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,
In the same manner as above, the load center of the load applied to the load detection table 11 can be obtained. 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 load center, the load applied to the load detecting
Let R be the load cell 16 as in the case of the left foot.
From the outputs W5 to W8 of ８19, 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. Then, the determined load centers corresponding to the left and right feet of the subject and the load centers corresponding to the entire body of the subject are displayed in real time on the graphic display device 4a of the display device 4, and further, the time series data of the load, Further, the time series data of the load center corresponding to each of the left and right feet of the subject and the load center corresponding to the entire body of the subject, that is, the movement trajectory is stored in the storage device 33.

The 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. Ball 24 on tool 25 or marker 70
Is stored endlessly in the storage area having an appropriate storage capacity in the storage device 33 so that the oldest data is sequentially rewritten with the latest data until the impact point at which the data is lost. Then, data after the impact point is stored in another storage area having a storage capacity corresponding to a predetermined time width.

The arithmetic unit 31 is based on information measured by the load measuring means M (the arithmetic unit 31 and the swing table 1).
As the swing information, the feature point f of the motion in the swing
(Address point, body turn start point, top point, swing-down point, impact point, finish point) are obtained and stored in the storage device 33. That is,
Along with the time series data, the load center corresponding to each of the right and left feet of the subject at the time of address (address point), the load center corresponding to the whole body of the subject, the load center corresponding to the whole body at the start point of the body turn, the top position The load center corresponding to the whole body at the (top point), 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, and the load center corresponding to the whole body at the finish point, Storage device 3
3 is stored. Each load center at the address (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 f of the operation 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 description will be given of a process in which the arithmetic unit 31 detects a body turn start point which is one of the characteristic points f of the operation in the golf swing. Of the load and load center data obtained by the arithmetic unit 31 and stored in the storage unit 33 as described above, the time change of the load on the back swing side of the subject shown in FIG. Since the apparatus configuration for hitting subjects is illustrated, in the time change of the load of the right foot, a search is started from data corresponding to a swing start point indicated by a point A in FIG. The position on the time axis is detected as a body turn start point.

Next, a process in which the arithmetic unit 31 detects a top point which is one of the characteristic points f of the operation 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. Data is searched in a direction going back in time from the point F indicating the reference time point, and the sign of the moving speed in the X direction is first inverted from negative to positive, that is, the direction of the moving speed in the X direction is first inverted. The point G is detected as the top point. The point E indicating the impact point
The time interval from to the point F, which is the reference point, is set to prevent the erroneous detection of the case where the direction of the moving speed is directed to the backswing direction immediately before the impact point as the top point. The time interval is suitably about 200 mS.

Next, a process in which the arithmetic unit 31 detects a swing-down point, which is one of the characteristic points f of the operation 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 point indicating the top point 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. H
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.

A point 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 f of the operation in the golf swing.

Next, the process in which the arithmetic unit 31 detects the amount of torsion of the body during the backswing will be described with reference to FIG. The arithmetic unit 31 obtains the data of the left foot (the foot on the ball hitting direction side) among the load centers of the right and left feet from the address point 58a to the top point 58c based on the data obtained as described above and stored in the storage device 33. The load center located on the toe side and the load center located on the most heel side of the right foot (back swing side foot) are detected, and the width Y1 of the load center in the subject longitudinal direction (Y direction) is determined. It is detected as the amount of torsion of the body during the swing. When displaying the amount of torsion of the body in the back swing on the display device 4,
As shown in FIG. 10, it is configured to display a semicircular pie chart 93 divided at an angle corresponding to the width Y1. However, if the amount of twist is appropriate (predetermined value), the boundary line of the pie chart 93 is located at the center, is located to the right when the twist is excessive, and is located to the left when the twist is insufficient.

Next, the process in which the arithmetic unit 31 detects the amount of torsion of the body during the downswing will be described with reference to FIG. The arithmetic unit 31 calculates the amount of movement of the center of load of the left and right feet in the longitudinal direction of the subject from the swing-down starting point 58d to the impact point 58e based on the data obtained in the storage device 33 obtained as described above. Sum (Y2 +
Y3) is obtained, and the sum of the movement amounts (Y2 + Y3) is detected as the amount of torsion of the body in the downswing. When displaying the amount of torsion of the body in the downswing on the display device 4, as shown in FIG. 10, the sum of the movement amounts (Y2 + Y
It is configured to display a semicircular pie chart 94 divided at an angle corresponding to 3). However, if the amount of twist is appropriate (predetermined value), the boundary line of the pie chart 94 is located at the center, is located to the right as the twist is excessive, and is located to the left as the twist is insufficient.

Accordingly, the arithmetic unit 31 detects the torsion amount of the body in the backswing and the torsion amount of the body in the downswing based on the measurement information of the load measuring means M as the swing information, and displays the torsion amounts. It is configured to be displayed on the device 4. The appropriate values of the torsion amount of the body in the backswing and the torsion amount of the body in the downswing are stored in the storage device 33 in advance.

As shown in FIG. 10, the arithmetic unit 31 and the storage unit 33 as the control means R store, as swing information, characteristic points f of the swing motion (in this embodiment, address points, top points, impact points). Point) and the appropriate range U of the load center corresponding to the feature point f, and the feature point f and the appropriate range U are associated with each other in such a state that their display positions correspond to the positional relationship on the swing table. It is configured to display on the display device 4 in the state of being arranged. Further, as shown in FIG. 10, the arithmetic unit 31 and the storage unit 33 use the swing information as the footprint N for the left and right feet of the subject and the load direction connecting the load centers of the left and right feet at the characteristic point f. And the footprint N, the straight line L, the characteristic point f, and the appropriate range U are displayed on the display device 4 in a state where their display positions are associated with the positional relationship on the swing table. ing.

The appropriate range U of the center of load of the whole body corresponding to each feature point f is obtained as follows. The appropriate range U1 (U) at the address point is such that the right / left load ratio (left foot load / overall load) is 45 to 45 on the straight line L1 (L).
The predetermined width is set at 55%. The appropriate range U2 (U) at the top point is such that the right / left load ratio (right foot load / overall load) is 75 to 70 on the straight line L2 (L).
The predetermined width is set at 85%. The appropriate range U3 (U) at the impact point is represented by a straight line L1 (L).
, The left / right load ratio (left foot load / total load) is 7
The width is set at a predetermined width at 5 to 85%.
The footprint N is provided such that the load center point of the right and left feet at the address point is located at a predetermined position (the position of the arch) in the footprint.

As shown in FIG. 10, 60a is an address point which is one of the characteristic points f, 60c is a top point, 60e
Indicates an impact point, 61 indicates the left and right direction of the swing table 1 passing through the address point 60a, and for each of the address point, the top point and the impact point, as described above, the footprint N
, The straight line L, the characteristic point f, and the appropriate range U are displayed at the same time, and the load ratio (left foot load / overall load or right foot load / overall load) and the above-mentioned appropriate range value at each feature point f are displayed. It is configured as follows. Also, on the lower side of the display screen of FIG. 10, a stance width S (a width between the load center points of the right and left feet at the address points) and a horizontal movement width W (weights) of the load center of the whole body in the swing are shown. Shift) and a stance ratio (W / S).

Further, the arithmetic unit 31 and the storage unit 33 as the control means R are arranged such that the characteristic point f is within the appropriate range U
Is determined, and the result of the determination is displayed on the display means 4. That is, the feature point f
Is out of the appropriate range U, as shown at 62 in FIG. 10, the column of the load ratio corresponding to the deviated feature point f is displayed in a color (for example, red) that can be distinguished from the others.

Further, as shown in FIG. 7, the arithmetic unit 31 obtains the subject's stance direction V1 with respect to the reference square direction V0 (that is, the X direction) based on the load centers of the right and left feet at the address points. The direction perpendicular to the stance direction V1 is determined as the subject's front-back direction with respect to the reference square direction V0, and the display device 4 displays the direction shown in FIG.
0, a reference line 92a corresponding to the reference square direction V0, and a direction display line 92b starting from an intermediate point of the reference line 92a and extending in the front-rear direction of the subject.
And a circular arc 92c connecting both ends of the reference line 92a and an end of the direction display line 92b.

Therefore, assuming that the inclination angle of the subject's stance direction V1 with respect to the reference square direction V0 is θ1,
The direction display straight line 92b is displayed in a direction inclined by θ1 from the direction orthogonal to the reference line 92a (in the case of the open stance, inclined leftward by θ1 as shown in FIG. 7). The direction of the direction display line 92b indicates the front-back direction of the subject. Therefore, in the case of a right batter, the direction indicating line 92b is located at the center position indicated by the mark 92d if the stance state at the address point is square, and is inclined rightward with respect to the mark 92d if the stance state at the address point is closed and open. If so, it will be tilted to the left with respect to the mark 92d.

Next, the operation of the apparatus in the use state will be described based on the flowchart of FIG. 8 and the display examples of FIGS. 9 to 12. 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). There are two operation modes, a reference trajectory display mode and a reference trajectory non-display mode. In the reference trajectory display mode, the graphic display device 4a together with the display data relating to a new swing is used as reference data, such as the movement trajectory of the load center corresponding to the entire body of the subject stored in the storage device 33 as past data.
In the reference trajectory non-display mode, the reference data is not displayed, and only the display data relating to the new swing is displayed.

When one of these two modes is selected and the setting of the operation mode is completed, it is determined in step # 2 whether the operation mode is set to the reference trajectory display mode. In this operation mode setting, it is also possible to set from the console 34 whether or not to display an operation mode schematic display P described later. If the operation mode is set to the reference trajectory non-display mode, nothing is performed and step # 5 is performed.
If the reference trajectory display mode has been set, the operator selects a desired trajectory from the trajectories of the load center corresponding to the entire body of the subject stored in the storage device 33, as the reference trajectory 40. (Step # 3). When the selection is completed, the selected reference trajectory 40, the reference individual address point 41 indicating the load center corresponding to each of the right and left feet of the subject at the address point in the swing of the reference trajectory 40, and the body of the subject at the address point Reference address point 4 indicating the load center corresponding to the whole
2. Reference body turn start point 43 indicating the load center corresponding to the entire body of the subject at the start of the body turn, reference top point 44 indicating the load center corresponding to the entire body of the subject at the top point, and the subject at the swing-down point The reference swing-down point 45 indicating the load center corresponding to the entire body of the subject, the reference impact point 46 indicating the load center corresponding to the entire body of the subject at the impact point, and the load center corresponding to the entire body of the subject at the finish point. Reference finish point 47 shown
Is displayed on the graphic display device 4a as shown in the display example of FIG. 9 (step # 4), and the process proceeds to step # 5.

In step # 5, the ball detection sensor 21
It is determined whether or not the ball 24 is placed on the support 25 or the marker 70 based on the detection information. If the ball 24 is not on the support 25 or the marker 70, the load corresponding to the entire body is determined. The center of the load and the center of the load corresponding to each of the right and left 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 an arithmetic process is performed to obtain a load center corresponding to the whole body and a load center corresponding to each of the left and right feet (step # 15), and FIG. As shown in the display example, the load center point 50 of the left and right feet and the load center point 51 of the whole body are displayed on the graphic display device 4a, respectively, and the ratio of the load of each of the left and right feet to the total load (that is, ,
WL / WT and WR / WT) are obtained, and displayed as ratio display points 53 in the display columns 52 provided at the left and right ends of the display screen of the graphic display device 4a so that the larger the ratio value is, the higher the ratio value is. ). Note that the display example of FIG. 9 illustrates a case where the reference trajectory display mode is selected in step # 1. After performing this screen control, the console 34
It is determined whether or not the mode change switch is pressed (step # 17). If the switch is pressed, the process returns to step # 1 so that the operation mode can be set. If not, the process proceeds to step # 5. Return.

In step # 5, 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 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 in the storage device 33 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 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 # 10). Return to position 7. If it is determined that the swing has already ended after a predetermined time has elapsed from the impact point, as shown in FIG. 10, the footprint N and the straight line L (L1, L
2, L3), feature point f (60a, 60b, 60c), appropriate range U (U1, U2, U3), semicircular circle graph 92 showing the direction of the body at the time of address, amount of body twist during backswing Are displayed on the graphic display device 4a, such as a semicircular pie chart 93 showing the sine wave, a semicircular pie chart 94 showing the amount of torsion of the body in the downswing (step # 1).
1).

Thereafter, by operating the console 34, the display of the graphic display device 4a can be switched to a display as shown in FIG. 11, for example (step # 11). The display of FIG. 11 shows the movement locus 55 of the load center of the whole body, the movement locus 56, 57 of the load center corresponding to each of the left and right feet, and the load center corresponding to the left and right feet of the subject at the address point. Is displayed together with the individual address point 58 indicating the characteristic point f, the identification display Q of the feature point f, the operation state schematic display P schematically showing each state, the reference locus already displayed, and the like. At this time, if the mode in which the operation mode schematic display P is not displayed is set, the operation mode schematic display P is not displayed. Identification display Q displayed on graphic display device 4a
In addition, the behavioral posture schematic display P corresponds to each of the address, body turn start, top, swing down, impact, and finish points, and each of the identification displays 59a to 59f indicating the load center corresponding to the entire body of the subject. , And operation mode schematic displays 86a to 86f. Further, at the upper end of the display screen of the graphic display device 4a, an address left foot load ratio indicating a ratio of a left foot load to an overall load at an address, a top right foot load ratio indicating a ratio of a right foot load to an overall load at a top point, and And the impact left foot load ratio indicating the ratio of the left foot load to the total load at the impact point is displayed. FIG. 11 also shows a display example when the reference trajectory display mode is selected, as in FIG. In addition, the ratio display point 53 in the display column 52
Indicates the state of the impact point.

Further, data on the time change of the load corresponding to the whole body as shown in FIG. 12 is displayed on the plotter 4b (step # 11). In the display of the time change of the load corresponding to the entire body, the characteristic point identification display Q is
Each state is displayed together with an operation state schematic display P that schematically shows each state. At this time, if the mode in which the operation mode schematic display P is not displayed is set, the operation mode schematic display P is not displayed. The identification display Q and the movement posture schematic display P displayed on the plotter 4b correspond to the times of swing start, body turn start, top, swing down, impact, and finish, respectively, and indicate the data at each time. Each of the displays 80a to 80f and the operation mode schematic display 8
7a to 87f. The display on the graphic display device 4a displays data from the swing start point to the finish point, and the display on the plotter 4b displays data for a predetermined time before and after the impact point. Thereafter, when the measured load and the data of the load center are not stored, the position returns to the position where the presence or absence of the ball 24 is detected. When the data is stored, the measured data is transferred to the data storage area of the storage device 33 (step # 12). And # 13), step # 5
Return to the position.

[Alternative Embodiment] In the above embodiment, the display device 4 displays the reference line 92a, the orientation display straight line 92b, and the circular arc 92c. However, without displaying the circular arc 92c, the reference line 92a is not displayed.
And the orientation display straight line 92b may be displayed. In the above embodiment, after the end of the swing, a semicircular circle graph 92 (a reference line 92a, a direction display line 92b, and an arc 92) indicating the direction of the body on the swing table 1 at the time of addressing.
Although c) is displayed on the display device 4, the body orientation at a characteristic point other than the address (for example, a swing start point) may be displayed. Further, the direction of the subject's body on the swing table 1 may be displayed in real time. With this real-time display, it is possible to practice while checking the front-back direction of the body. In the above embodiment, the stance direction V1 of the subject with respect to the reference square direction V0 (that is, the X direction) is obtained based on the load centers of the right and left feet, and the stance direction V1 is obtained.
Although the direction orthogonal to 1 is obtained as the front-back direction of the subject with respect to the reference square direction V0, in obtaining the front-back direction of the subject, for example, the moving trajectory of the load center of each of the left and right feet Find the front-back direction,
The center direction in the front-rear direction of each of the right and left feet may be obtained as the front-rear direction of the subject. In the above embodiment, the reference square direction V0 is set in the direction of one side of the swing table 1 (X direction), but may be set in any other direction. For example, a detecting device for detecting the hitting direction may be separately provided, and the hitting direction detected by the detecting device may be set as the reference square direction V0. Further, a plurality of targets are set in front of the hitting direction and selected from the plurality of targets (for example, the console 34).
The direction of the target that has been selected in the above step may be set as the reference square direction V0. As a result, even if the direction of the target changes, it is possible to practice while judging whether or not an appropriate stance state is being taken. In setting the target ahead in the hitting direction, for example, a large screen is provided in front of the hitting direction, and on the screen,
The target may be set by projecting a green (or a flag or the like). In the above embodiment, the direction display straight line 92b indicating the front-back direction of the body of the subject at the address point is displayed. On the display, a mark (or line) indicating the ideal front-back direction of the body at the address point. May be displayed. Thus, in general, the ideal stance direction is slightly different depending on the type of club (a driver has a slightly better closed stance, and a short iron has a slightly better open stance). 34), the mark (or line) indicating the front-back direction of the ideal body corresponding to the club is displayed, and the mark (or line) indicating the front-back direction of the ideal body and the direction are displayed. By comparing with the display straight line 92b, it is possible to practice while judging the direction of the actual body front-back direction with respect to the ideal body front-back direction.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[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 showing detection of a torsion amount of a body;

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

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

FIG. 10 is a display example of an appropriate range and the like according to the embodiment to which the present invention is applied.

FIG. 11 is a display example of a locus of movement of a load center according to the embodiment to which the present invention is applied;

FIG. 12 is a display example of a time change of a load according to the embodiment to which the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Swing table 4 Display means 92a Reference line 92b Direction display straight line 92c Arc C Ball hitting tool M Load measuring means R Control means V1 Stance direction

Claims (2)

(57) [Claims] 1. A swing table (1) on which a subject swinging while holding a hitting tool (C) is placed, and a load measuring means (M) for measuring the load centers of the right and left feet of the subject on the swing table (1). ) And control for obtaining the stance direction (V1) of the subject with respect to the reference square direction based on the measurement information of the load measuring means (M), and displaying the information corresponding to the stance direction (V1) on the display means (4). Means (R) for hitting the ball, wherein the control means (R) obtains a front-back direction of the subject with respect to the reference square direction based on the stance direction (V1), In the means (4), a reference line (92a) corresponding to the reference square direction and a direction display extending from the midpoint of the reference line (92a) and extending in the front-back direction of the subject Line (92b) and hitting operation trainer aircraft that is configured to display the. 2. The control means (R) displays an arc (92) connecting both ends of the reference line (92a) and ends of the direction indicating line (92b) on the display means (4).
2. The hit ball motion training machine according to claim 1, wherein c) is displayed.