JPS6138713B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a golf swing training device, and more particularly to a training device that is easy to use and can accurately inform a practitioner of the result of a swing. As we all know, the fundamentals of golf are the swing. Therefore, if your swing is not stable, you cannot expect to get a good score. The swing motion is generally address → take back → back swing →
The ball is executed in the shape of a C in the order of downswing, impact, and follow-through. In many cases, the trajectory of the ball after impact is determined by the trajectory of the club head before and after impact. For example, if the trajectory of the club head before and after impact is a straight line along the target direction, and the face (hitting surface) is perpendicular to the target direction at the time of impact, the trajectory of the ball will be straight. However, even if the face is perpendicular to the target direction at the time of impact, if the club head enters from the inside and swings to the outside, or if the club head enters from the outside and swings to the inside, spin will be applied to the ball and the hook ball will be affected. It becomes a sliced ball and flies in a direction far away from the target direction. The trajectory of the club head before and after impact is influenced by factors such as the twist of the shoulders during the backswing, the grip, the axis shake, the opening of the hips during the downswing, and the sway of the hips. Therefore, by visually checking the trajectory of the ball at a practice range or the like, it is possible to know the trajectory of the club head before and after impact, and from this, it is possible to diagnose one's own swing. However, even if it is a sliced ball, for example,
In many cases, it is rarely obvious immediately after impact; the ball begins to curve after a certain distance, and at this point it is confirmed that it is a sliced ball. Therefore, it is extremely difficult to diagnose one's own swing in a small practice area, and in the end, practicing in such a place means practicing without knowing what one's own swing is like. . Furthermore, even if there is a large practice area nearby, the reality is that it is not easy to practice due to time and financial constraints. In response to these concerns of players, swing practice devices that can be used even in gardens and the like have recently come on the market. This swing training device uses a stroboscope to make it possible to visually see the angle and position of the club head at the moment it hits the ball, or it uses a frame to create a trajectory and make the player swing along this trajectory. . By using such a training device, you can easily practice anytime and learn the correct swing. However, the conventional swing training device described above has the following problems. In other words, for those using a stroboscope,
The problem was that it was difficult to use because it required instantaneous judgment because the swing had to be diagnosed by visually viewing the so-called video. Furthermore, those who create the trajectory must be very careful because the swing tends to be slightly different from the actual swing. The present invention has been made in view of the above circumstances, and an object thereof is to provide a golf swing training device that is easy to use and can accurately inform a practitioner of the result of a swing. Hereinafter, details of the present invention will be explained with reference to illustrated embodiments. FIG. 1 shows the external appearance of the device according to the present invention. In the figure, 1 indicates a mat formed to a thickness of 10 to 30 mm, and 2 indicates a mat that can be selectively separated from the mat 1. This shows the display panel. As shown in FIG. 3, the mat 1 has a hard plate 4 fixed to the top surface of a base plate 3, and a thin plate 5, a rubber plate 6, a thin plate 7, and a transparent plate 8 stacked and fixed in the above order on the top surface of this plate 4. It has a structure that is shock-resistant, waterproof, and dust-proof. At the center of the upper surface of the mat 1 is a peg 10 made of a highly elastic material such as rubber, to which a golf ball or a light hollow ball 9 made to resemble a golf ball is fixed at the upper end. is removably installed. And for Matsutto 1,
As shown in FIG. 2, the straight line 11 drawn through the peg 10 is used as a reference, and the straight line 12 is perpendicular to the straight line 11 on the right side of the figure (downswing side) from the peg 10, and the straight line passes through the peg 10. A total of 11 lights are placed on the straight line 13 perpendicular to the line 11 and on the left side of the figure from the peg 10 (follow-through side), on the straight line 14 perpendicular to the straight line 11, on the right side of the straight line 12, on the straight line 11, and in the area near the display panel. Transmission windows 15a, 15b, 15c, 15d, 15e, 1
5f, 15g, 15h, 15i, 15j, 15k
is set. That is, the distance between straight lines 12 and 13 and the distance between straight lines 13 and 14 are set to be, for example, 1.5 times the width X in the front-back direction of the head H in the No. 1 wood club shown in FIG. Then, a light transmitting window 1 is placed on the straight line 12.
5a, 15b, 15c align the light transmission window 15b with a straight line 1
1 and are set at equal intervals. The distance between the light transmitting windows 15a, 15b, 15c is 6th.
The width is set to be slightly narrower than the width Y from the heel to the toe of the head of the iron club shown in the figure. Therefore, if the center of the head of the iron club is located directly above and close to the light transmitting window 15b, and its face F is orthogonal to the straight line 11, light will be prevented from entering the light transmitting window 15b, and similarly, For example, by positioning the center of the head over the center of the light transmitting windows 15a and 15b, light is prevented from entering the light transmitting windows 15a and 15. In the case of a wood club, the width Z from the heel to the toe is usually less than twice the width Y of an iron club, so similar light-emitting and shielding is performed. Also, the peg 10 is placed on the straight line 13.
Light transmitting windows 15d and 15e are set symmetrically with respect to , and the distance between the light transmitting windows is set equal to the distance between the light transmitting windows 15a, 15b, and 15c. Furthermore, light transmitting windows 15f, 15g, and 15h are provided on the straight line 14.
g are located on the straight line 11 and set at equal intervals. And these light transmission windows 15f, 15g,
15h is provided under the same dimensional conditions as the light transmitting windows 15a, 15b, and 15c. On the other hand, straight line 11
A light transmitting window 15i is set above and on the right side of the light transmitting window 15b, and this light transmitting window 15i
The distance between the light transmitting window 15b and the light transmitting window 15b is set to a value equal to or less than the thickness W of the sole of an iron club shown in FIG. 6, for example, a No. 2 iron club. Also,
Light transmitting windows 15j and 15k are set on the mat 1 near the panel at appropriate intervals.
The above-mentioned 11 light transmission windows are, as shown in FIG. 18 and 19. In each of the holes 19, elements for receiving light incident through the light transmission window, such as photo transistors 20a, 20b, . . . 20k, are inserted. Therefore, the phototransistors 20a, 20b, . . . 20k are so-called buried within the mat 1. Note that the holes 17 and 19 are formed to have a relatively large diameter, and the holes 16 and 18 are, for example, 7 cm from the top surface of the light transmission window.
Even if the smallest club head passes through the following positions, the phototransistor 20
The diameter is set so that it can reliably cut off the light that enters the area. The display panel 2 includes first and second speed indicators 21a and 21b that display the speed of the club head before and after impact, a trajectory indicator 22 that displays the trajectory of the club head before and after impact, and a buzzer 23 that will be described later. , a power switch 24, etc. are attached. First,
The second speed indicators 21a, 21b are, for example, 7
A segment display system is adopted, in which the first speed indicator 21a displays the head speed before impact, and the second speed indicator 21b displays the head speed after impact. The display of these indicators is controlled by a speed detection device which will be described later. The orbit indicator 22 also includes nine rectangular light emitting elements 25a, as shown in an enlarged view in FIG.
25b, 25i are used to form a straight line, upward left, downward left downward display,
The display is controlled by a trajectory detection device described later. However, in the display panel 2, the above-mentioned
11 photo transistors 20a, 20b,...
......A processing device that controls the first and second speed indicators 21a, 21b and the trajectory indicator 22 based on the output of 20k, as well as other controls to be described later.
26 are accommodated. This processing device 26 is specifically constructed as shown in FIG. That is, this device can be broadly divided into the straight line 12,
Light transmission windows 15a, 15 set on 13, 14
b………… Photo set corresponding to 15h
Eight detectors 27a, 27b... whose main elements are transistors 20a, 20b...20h
27h, and photo transistors 20j, 20 provided corresponding to the light transmission windows 15j, 15k.
Based on the output of k, each of the detectors 27a, 27
an illumination compensator 28 that controls the output level of the detectors 27a, 27h to a constant level, and the detectors 27a, 27;
b...Photo transistor 20i provided corresponding to the output of 27h and the light transmission window 15i
A speed detection device 3 receives the outputs of the detectors 27i and inputs the outputs of the detectors 27i configured similarly to the above-mentioned detectors to detect the head speed before and after the impact.
0, and a trajectory detection device 31 which similarly introduces each of the above outputs to detect the trajectory of the head before and after the impact, and similarly introduces each of the above outputs, and detects that even one of these outputs continues to be "1" at the logic level. In this case, the alarm 32 is configured to make the buzzer 23 sound. Each of the above detectors 27a, 27b...27h,
27i have the same configuration. For example, taking the detector 27a as an example, the output of the photo transistor 20a is connected to the NPN transistor 35.
The transistor 35 is configured to supply a base current to the transistor 35 and send out the collector level of the transistor 35 as an output signal. A resistor is connected between the emitter of the phototransistor 20a and the ground.
R ₁ , R ₂ , and R ₄ are connected in series, and analog switches 36 and 37 are connected to both ends of the resistor R ₄ and to both ends of the series circuit of R ₂ and R ₄ , respectively. Note that the analog switches 36 and 37 are as follows:
The conduction is controlled by the output of the illuminance compensator 28, which will be described next. The illuminance compensator 28 connects the collector of the phototransistor 20j to a power supply, connects the emitter of the phototransistor 20j to ground via a resistor _R3 , and connects the emitter to the base of an NPN transistor 38 via a resistor. The collector output of this transistor 38 is connected to each detector 27a, 27b... through an inverter 39.
...Analog switch 3 in 27h, 27i
6 is given as a control signal. Similarly, photo
Connect the collector of transistor 20k to the power supply and connect the emitter of transistor 20k to a resistor.
The emitter is connected to the ground via _R5 , and the emitter is connected to the base of an NPN transistor 40 via a resistor, and the collector output of this transistor 40 is connected via an inverter 41 to each detector 27a,
27b...... is given as a control signal for the analog switch 37 in 27h and 27i. The resistor _R5 is set to a value approximately equal to the resistor _R1 , and the resistor _R3 is set to a value substantially equal to the resistor _R1 and _R2.
It is set to a value almost equal to the composite value of . Furthermore, R ₁ , R ₂ , and R ₄ are set to have a relationship of R ₁ <R ₂ <R ₄ . The speed detecting device 30 is configured as shown in FIG. 3 as an example. That is, each of the detectors 27a, 27 is connected to nine input terminals.
b, ……27h, 27i output signal Va,
Vb, ......Vh, Vi are introduced into the correspondence shown in the figure, and the output signals Va, Vb, Vc are sent to the NOR gate 51, and the output signals Vd, Ve are sent to the NOR gate 52.
Then, the output signals Vf, Vg, and Vh are introduced into the NOR gate 53, respectively. The output of the NOR gate 52 is introduced into the set terminal of a flip-flop 56 made up of NAND gates 54 and 55, and the output of the NOR gate 52 is introduced into the set terminal of a flip-flop 59 made up of NAND gates 57 and 58. On the other hand, the output signal Vi and the constant level signal Vo
is introduced into an AND gate 60, the output of this AND gate 60 and the output of the NOR gate 51 are introduced into a NAND gate 61, and this NAND gate 61
The output of the NOR gate 52 and the output of the NOR gate 52 are introduced to the reset terminal of the flip-flop 56 via an AND gate 62. Further, the output of the AND gate 60 is introduced into one input terminal of an AND gate 64 via an inverter 63, and the other input terminal of the AND gate 64 is connected to the NOR gate 53.
The output of the AND gate 64 is introduced to the reset terminal of the flip-flop 59. The set output of the flip-flop 56 and the output of the oscillator 65 are introduced into a counter 67 via an AND gate 66. The counter 67 sends out an output in bit parallel, and this output signal is given as a read signal to the read-only memory 68. The read-only memory 68 is for converting the counted value of the counter 67 into a speed display signal, and the correspondence between the counted value and the speed display signal is determined in advance. The output signal of the read-only memory 68 is then given as a display control signal to the first speed indicator 21a. Similarly, the set output of the flip-flop 59 and the output of the oscillator 65 are introduced into a counter 70 via an AND gate 69, the read-only memory 71 is read out with the output of the counter 70, and a read signal is sent to the second speed indicator 21b. It is given as a display control signal. Further, the flip-flop 56
The set input and reset input are connected to the inverter 72.
A signal obtained by inverting the set input of flip-flop 59 and a signal obtained by inverting the reset input by inverter 74 is similarly introduced into AND gate 75. Then, the outputs of the AND gates 73 and 75 are sent to the counters 67 and 70 via an AND gate 76.
It is given as a clear signal. The trajectory detecting device 31 is configured as shown in FIG. 9 as an example. That is, each of the detectors 27a, 27 is connected to nine input terminals.
b, ……27h, 27i output signal Va,
Vb, ……Vh, and Vi are introduced into the correspondence shown in the figure. Then, the output signals Va, Vb,……
Vh respectively to inverters 81a, 81b...
...2 NAND gates 8 each via 81h
A flip-flop 84a composed of 2.83,
84b, . . . 84h are introduced into the set terminals. Each of the flip-flops 84a, 84b...
......The reset terminal of 84h is supplied with a signal from an AND gate 85, and one input terminal of this AND gate 85 receives a signal obtained by inverting the output signal Vi by an inverter 81i. In addition, a signal Vo of a constant level is introduced to the other input terminal. Each of the flip-flops 84a, 84b, . . . 8
Nine AND gates 86a, 86b .
...Introduced to 86i, these AND gates 86
a, 86b……The output of 86i is connected to the inverter 8.
The light emitting elements 25a, 25 of the orbit indicator 22 are activated by the signals inverted at 7a, 87b, . . . 87i.
b, 25i are controlled to emit light. Further, the alarm 32 includes the respective detectors 27a, 27b, ......27h, as shown in FIG.
27i output signals Va, Vb……Vh, Vi via OR circuit 91 and inverters 92 and 93.
It is supplied to the base of a PNP transistor 94. The emitter of the transistor 94 is connected to a power source, and the collector of the transistor 94 is grounded through a resistor 95 and connected to the power source through a capacitor 96, and further connected to the base of a PNP transistor 97. The emitter of the transistor 97 is connected to a power supply, and the buzzer 23 is connected between the collector of the transistor 97 and ground. Next, the operation of the apparatus configured as described above will be explained. First, it is assumed that this device is used under a condition where the mat 1 is illuminated from above by sunlight or a lighting device. Immediately after the power is turned on, there is a state in which nothing exists above each light transmitting window 15a, 15b...15k, that is, each light transmitting window 15a, 1
5b......When there is nothing blocking light from entering 15k, a phototransistor 2 provided corresponding to each light transmission window
0a, 20b......20k, and as a result, each photo transistor 20a, 20b
......20k is turned on. Therefore,
All the transistors 35 of each detector 27a, 27b...27i are turned on, and each detector 27
a, 27b……Output of 27i Va, Vb……
…Everything in Vi becomes “0” at the logic level. In this state, the flip-flop 56 of the speed detection device 30 has both the set terminal and the reset terminal set to "1" and is in an undefined state, and the flip-flop 59 also has both the set terminal and the reset terminal set to "1" and is in an undefined state. becomes. On the other hand, orbit detection device 3
Each flip-flop 84a, 84b, . . .
...84h is also in an undefined state with both the set and reset terminals being "1". When the ball 9 is set on the upper end of the peg 10 in this state and the ball 9 is hit with a typical swing using, for example, a wood club, the speed detection device 30 operates as follows. That is, as mentioned above, a typical swing is performed in the following sequence: address → take back → back swing → down swing → impact → follow through, and the face F of the club head H at this time is indicated by thick arrows I and R in FIG. Make the movements shown in , ha......Yo. That is, the beginning of the range indicated by the thick arrow A is the address, and the takeback starts at the thick arrow A, and then moves to the backswing indicated by E. Then, the range from F to N becomes the downswing, the impact is reached at R, and the swing then transitions to a follow-through. In this way, the club head H
When the club head H passes over the mat 1, the club head H passes in front of each light transmitting window, so that the light entering each light transmitting window is blocked for a short period of time, and when the light is blocked, each detector 27a, 27b …………2
An output signal is sent from 7i. Now, to simplify the explanation, let us assume that the club head H moves on the straight line 11 shown in FIG. 2. At this time, in FIG.
Table 1 shows the relationship among the outputs of the flip-flops 7a, 27b...27i, the respective terminal levels of the flip-flops 56 and 59, and the set outputs of the flip-flops 56 and 59. In other words, the range indicated by the thick arrow A in FIG. 10 is the range in which the club head H does not block light with respect to the face F.
The range indicated by the thick arrow B is the range where the club head H blocks light from entering the light transmission window 15b, and the range indicated by the thick arrow C is the range where the club head H blocks light from entering the light transmission window 15b, 15i.
This is the range in which light is blocked from entering the area. Below, each range is similarly shown based on the face F.

[Table] As is clear from FIG. 10 and Table 1 above, the face F of the club head H passes through the ranges of thick arrows A, B, and C, and enters the range of thick arrow D, that is, the light incident on the light transmission window 15i. When a state is reached in which only the flip-flops are blocked, the set terminals of flip-flops 56 and 59 both become "1" and the reset terminals both become "0". When this condition is created, the output of the AND gate 76 shown in FIG. 8 becomes "1", and as a result, both the counters 67 and 70 are cleared. Therefore, the first and second speed indicators 21a, 21
The contents that were displayed in b will be deleted. That is, in this device, when the club head H attempts to pass through the range indicated by thick arrow D due to takeback, the previous speed display is automatically erased. Then, when the club head H passes through the backswing indicated by the thick arrow H and then shifts to the downswing, and the face F of the club head H attempts to pass through the range indicated by the thick arrow H, the output of the AND gate 76 becomes "1" again and a clear signal is sent again. is given. Then, when the club head H passes through the range indicated by the thick arrow mark H and enters the range indicated by the thick arrow mark H, the club head H blocks the light from entering the photo transistors 20b and 20i, so that the detector 27b , 27i both become "1". When this happens, the set terminal of the flip-flop 54 becomes "0", the reset terminal becomes "1", and the set output becomes "1". As a result, the AND gate 66 opens and the output pulse of the oscillator 65 is introduced into the counter 67.
7 starts counting. In addition, flip-flop 5
9 continues in the reset state as seen from Table 1. The face F of the club head H is a thick arrow,
When passing through the range shown by the nulls, the output of the detector also changes temporarily, but as can be seen from Table 1, the condition for inverting the flip-flop 56 is not reached. Therefore, flip-flop 56 is held in the set state during this period. Then, when the face F of the club head H reaches the impact within the range indicated by the thick arrow and enters the range indicated by the thick arrow O, light is blocked from entering the photo transistors 20d and 20e, and as a result, the detectors 27d and The output of 27e becomes "1". When this happens, the set terminal of the flip-flop 56 becomes "1", the reset terminal becomes "0", and the flip-flop 56 becomes
The output of becomes “0”. Therefore, the AND gate 66 closes and the counter 67 stops counting. The period during which the counter 67 was counting was the period when the face F passed through the range indicated by the thick arrows C, R, N, R. In the end, the count value of the counter 67 was the period when the face F passed between the straight lines 12 and 13. proportional to the time it takes to pass. Therefore, if there is now a correspondence between the counted value of the counter 67 and the read value of the read-only memory 68, the head speed before impact is displayed on the first speed display 21a, and this The display state continues. As mentioned above, when the outputs of the detectors 27d and 27e become "1", the set terminal of the flip-flop 59 is switched to "0" and the reset terminal is switched to "1". As a result, the set output of the flip-flop 59 becomes "1", and the counter 70 starts counting. Then, when the face F passes through the range indicated by the thick arrow wa and enters the range indicated by the thick arrow ka,
Since light is blocked from entering the phototransistor 20g, the output of the detector 27g becomes "1".
When this happens, the set terminal of flip-flop 59 is switched to "1" and the reset terminal to "0", as shown in Table 1, and the set output of flip-flop 59 becomes "0". As a result, the AND gate 69 is closed and the counting operation of the counter 70 is stopped. During the period when the counter 70 was in counting operation,
This is the period during which the face F passes through the range indicated by the thick arrows O and Wa, and the count value of the counter 70 is ultimately proportional to the time required for the face F to pass between the straight lines 13 and 14. Therefore, the second
The speed of the head after the impact is displayed on the speed indicator 21b, and the head speed before and after the impact can be known from the display contents of the second speed indicator 21b and the first speed indicator 21b. The contents displayed on the first and second speed indicators 21a and 21b are erased when the club head H is moved toward the backswing side along the path indicated by the thick arrows C, D, and Ho, as described above. On the other hand, when performing the swing motion as described above, the trajectory detection device 31 operates as follows. In other words, in the address state immediately after power-on,
The club head H has each light transmitting window 15a, 15b...
......15i is not blocked, so each flip-flop 84a, 84b, ......84
h is in an undefined state. When the take-back starts from the address and the face F of the club head H is about to pass through the range indicated by the thick arrow D, the detector 27
The output of i becomes "1". As a result, each flip-flop 84a, 84b...84h is reliably reset while passing through the range indicated by thick arrow D, and each flip-flop 84a, 84b......
...The set output of 84h becomes "0" and the reset output becomes "1". Therefore, the output of each AND gate 86a, 86b...86h is "0"
Therefore, each light emitting element 25a, 25b, ......2
The input supply to 5i is stopped. In this state, enter the downswing,
Now, if the club head H is, for example, the light transmitting window 15
b, above 15c → above light transmission windows 15d, 15e →
If it is swung down so as to pass over the light transmitting windows 15f and 15g, first, the light transmitting windows 15b and 1
When passing over 5c (range indicated by thick arrow 4)
The outputs of the detectors 27b, 27c become "1", and as a result, the flip-flops 84b, 84c are switched to the set state, and the AND gate 86c is opened.
Therefore, input is supplied to the light emitting element 25c,
This light emitting element 25c emits light. Then, the light emitting state continues. Next, when the club head H passes over the light transmitting windows 15d and 15e, the flip-flops 84d and 84e are inverted, and as a result, the AND gate 86e is opened and an input is supplied to the light emitting element 25e. Further, when the club head H passes over the light transmitting windows 15f, 15g, the flip-flops 84f, 84g are inverted, and as a result, the AND gate 86g is opened and an input is supplied to the light emitting element 25g. Therefore, when the club head H is swung down as described above, the light emitting elements 25c, 25e, 25g are activated as shown in black in FIG.
lights up, indicating that the club head H has swung inside out based on the position of the peg 10, and the practitioner can know this. The above display disappears when the club head H is moved as indicated by thick arrows A, B, C, and D in FIG. 10, that is, when a backswing operation is performed. Tables 2 to 4 show the relationship between each detector output and the light emitting state of each light emitting element with "1" and "0"("1" represents a detection or light emitting state, and "0" represents a non-detection or non-emission state. (represents the state). As can be seen from these three tables, the trajectory of the club head H is accurately displayed on the trajectory display 22. Therefore, it is possible to know what kind of swing the player is making from the content displayed on the trajectory indicator 22.

【table】

【table】

[Table] Incidentally, as described above, this device is used under a condition where the pine 1 is illuminated by sunlight or a lighting device. In this case, there is no particular problem when using a lighting device, but when sunlight is used for lighting, the brightness varies depending on the time of day, weather, etc., and each detection Vessel 27
The output levels of a, 27b...27i also vary. Fluctuations in the output level in this manner cause false detection. Therefore, in this device, the illuminance compensator 28 is used to prevent false detections that are likely to occur due to fluctuations in illumination light as follows. That is, when the mat 1 is illuminated, the photo lights provided corresponding to the light transmitting windows 15j and 15k are illuminated.
Transistors 20j and 20k also always receive light.
Now, when the intensity of the illumination light is strong, the photo transistors 20j and 20k are deeply conductive, and as a result, the resistance
The voltage drop across R ₃ and R ₅ also increases, causing transistors 38 and 40 to become deeply conductive. Therefore, the outputs of the inverters 39 and 41 are both "1", and the outputs of the respective detectors 27a, 27b, . . . 27i
The analog switches 36 and 37 are turned on. For this reason, each photo transistor 20a,
20b...The emitter resistance of 20i is set only to _R1 . When the intensity of the illumination light decreases slightly, the voltage drop across the resistor R ₅ (where R ₅ =R ₁ ) decreases, and the output of the inverter 41 switches to "0". At this time, the voltage drop across the resistor R ₃ (where R ₃ =R ₁ +R ₂ ) is greater than that across the resistor R ₅ , so the transistor 38 is still in the on state. For this reason,
Since the output of the inverter 39 still holds "1", only the analog switch 36 is turned on. In this case, each photo transistor 20
The emitter resistance of a, 20b, ……20i is
R ₁ +R ₂ is set, and the increase in this resistance value compensates for the decrease in voltage drop due to the decrease in input (light), and as a result, each detector 27a, 27b, . . .
...27i output level is prevented from decreasing. Similarly, when the illumination light intensity further decreases, the voltage drop across the resistor _R3 decreases, so that the transistor 38 is switched to the OFF state, and the output of the inverter 39 also becomes "0".
Switch to . Therefore, analog switch 36
is controlled off, and each phototransistor 20
The emitter resistance of a, 20b, ……20i is
The value is set to R ₁ + R ₂ + R ₄ . Therefore, a decrease in the output level of each detector 27a, 27b...27i is prevented. Therefore, even if the illumination light intensity fluctuates significantly, each detector 27a, 27b,...
... Since the output level of the 27i can be kept constant, false detections due to fluctuations in illumination light intensity are prevented from occurring. Note that when the illumination intensity further decreases, each detector 27a, 27b, ......
The transistor 35 of 27i continues to be in the off state. In this way, when the transistor 35 continues to be in the off state, that is, any one of the outputs Va, Vb, ...Vi continues to be "1", the output of the inverter 93 of the alarm 32 continues to be "1". ”, and as a result, the transistor 94 turns off, and the transistor 9
7 is turned on and the buzzer 23 sounds. Therefore, by the sound of the buzzer 23, it can be known that the light is not bright enough to use this device. Note that each detector 27 is
a, 27b, ...... 27i output Va, Vb, ...
......Vi becomes "1", but when the period of this "1" is less than the time constant determined by the capacitor 96 and the resistor 95, the transistor 97 is not turned on. Therefore, the buzzer 23 will not sound when the club head H passes. In this way, when a practitioner holds a club and swings so that the club head H passes over the mat 1, the so-called detection and display system operates.
The speed of the club head H before and after impact and the trajectory of the club head H are immediately displayed.
Therefore, it is desirable to have something that can immediately and accurately inform the practitioner of the state of the practitioner's swing, especially the state of the club head H before and after impact, and that can contribute to learning the correct swing. It will be done. In particular, as a means for detecting the movement of the club head H, a plurality of optical detection elements are embedded in the mat 1 illuminated with the illumination light in such a manner that they can receive the illumination light. When the incident light to the element is blocked, each of the above elements sends out an output signal, and the speed and trajectory are detected based on this output signal. It can be formed flat without any wrinkles. Therefore,
It is possible to make a swing that matches the actual situation. In addition, when the intensity of the illumination light is within a predetermined range, a means is provided to keep the output level of the optical detection element almost constant, so when sunlight is used as the illumination light, the intensity Even if the value fluctuates frequently, as long as the level of the fluctuation is within the above range, the fluctuation will not cause false detection and accurate detection can be performed. Further, since a means for performing a notification operation is provided when the intensity of the illumination light is outside the above range, the practitioner can immediately know whether the brightness is usable or not, making it easy to use. In the above-described embodiment, the velocity and trajectory before and after the impact are detected, but only the trajectory may be detected. Furthermore, in the above embodiment, three detection elements are arranged on each of the downswing side and the follow-through side, but the number is not limited to this, and the trajectory can be detected more precisely by increasing the number of detection elements. You can do it like this. Further, during actual swing practice, the display panel 2 may be separated from the mat 1 and placed in a place where it will not be noticed. As described in detail above, according to the present invention, it is possible to provide a golf swing training device that can accurately diagnose a swing and accurately notify the practitioner, and is easy to use.

[Brief explanation of the drawing]

Fig. 1 is an external view of a device according to an embodiment of the present invention, Fig. 2 is a top view of the same device, Fig. 3 is a view taken along the line M-M in Fig. 2, and Fig. 4 is a view of the same device. Figures 5a and b are front views and side views of the wood club; Figures 6a and 6a are
b is the front view and side view of the iron club, No. 7
The figure is a block diagram of the processing device built into the device, No. 8
The figure shows a configuration diagram of the speed detection device in the same processing device.
FIG. 9 is a block diagram of a trajectory detection device in the same processing device, and FIG. 10 is a diagram for explaining the operation of the same device. 1...Matsuto, 2...Display panel, 9...Ball, 10...Peg, 15a, 15b...15
k……Light transmission window, 20a, 20b,……20
k...Photo transistor, 21a...First speed indicator, 21b...Second speed indicator, 22
...orbit indicator, 27a, 27b...27i
...detector, 28 ... illumination compensator, 30 ... speed detection device, 31 ... orbit detection device, 32 ... alarm, H ... head, F ... face.

Claims (1)

[Claims] 1 A mat formed on the upper surface in which a ball to be hit by a club head can be set and irradiated with illumination light from above; a plurality of optical detection elements that send output signals when the incidence of the illumination light is blocked by the club head as it passes; and a trajectory of the club head at least before and after impact based on the output signals of these optical detection elements. means for detecting and displaying; compensation means for keeping the output signal level of the optical detection element substantially constant when the intensity of the illumination light is within a predetermined range; and notification when the intensity of the illumination light is outside the range. 1. A golf swing training device, comprising: a means for performing a movement.