JPH0490774A - Golf putting trainer - Google Patents

Abstract

PURPOSE:To provide a compact putter trainer capable of freely selecting a distance and gradient from a ball driving position to a cup by providing a film support plate, piezoelectric plastic film, comparator means and judgment result informing means. CONSTITUTION:When a ball 20 collides with a film support plate 5 in a recess 2, a piezoelectric film 6 is deformed together with the film support plate 5, so that a piezoelectric plastic film 6 generates piezoelectricity through a piezoelectric effect. The height of generated voltage corresponds to the intensity of the ball 20 colliding with the film support plate 5. Thus, the output voltage of the piezoelectric plastic film 6 amplified by an amplifier 13 causes the intensity of driven ball to be judged into three kinds by a comparator 14. By properly determining the threshold value of the comparator 14, the output voltage ranges of the three kinds of piezoelectric plastic films 6 to be judged by the comparator 14 are adapted to correspond to 'too weak driven ball', 'proper intensity driven ball' and 'too strong driven ball', respectively.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a practice machine for practicing golf puttering, and in particular, it automatically determines whether or not the force of the ball hit is appropriate, This invention relates to a golf putter practice machine that informs users by sound and/or light.

[Conventional technology]

Typical conventional golf putter practice machines include:
Some had a long and narrow mat with an upward slope on one end and a cup on the higher end.

[Problem to be solved by the invention]

The conventional putter practice machine as mentioned above is (b) It becomes large and gets in the way when not in use.

(b) Since the distance and slope from the ball-striking position to the cup are always the same, the appropriate force for hitting the ball remains unchanged, which is impractical.

There were other problems.

The present invention has been made to solve the above-mentioned conventional problems, and is capable of miniaturization, the distance from the ball hitting position to the cup and the slope can be freely selected, and the strength with which the ball is hit is increased. To provide a golf putter practice machine that allows you to know whether or not your putter is correct by sound or (and) light, has a game feel, and allows you to practice your putter with interest.

[Means to solve the problem]

A golf putter practice machine according to the present invention includes: a film support plate arranged so that a golf ball hit by a putter collides with the golf ball; a piezoelectric plastic film attached to the film support plate; a comparator means for discriminating the magnitude of the voltage output from the device into a proper voltage range, a voltage smaller than the proper voltage range, and a voltage larger than the proper voltage range; ) Discrimination result notification means for converting into light.

[Effect]

In the present invention, when a golf ball hit by a putter hits the film support plate, the piezoelectric plastic film deforms together with the film support plate, so that the piezoelectric plastic film generates a voltage output due to the piezoelectric effect. Here, the magnitude of the voltage generated in the piezoelectric plastic film corresponds to the strength with which the ball hits the film support plate, that is, the strength of the ball hit. Therefore, the output voltage of the piezoelectric plastic film is discriminated by the comparator means into three ranges: (a) an appropriate voltage range, (b) a voltage smaller than the appropriate voltage range, and (c) a voltage larger than the appropriate voltage range. , the strength of the ball is classified into three types. Therefore, by appropriately setting the threshold value of the comparator, the magnitude of the eight voltages of the three types of piezoelectric plastic films that the comparator discriminates can be changed to ``too weakly hit'', ``hitted ball with appropriate strength'', and ``too strong''. It can be made to correspond to "hitting a ball".

Then, the determination result notification means converts the determination result by the comparator means into sound or light, allowing the practitioner to know whether the strength of the hit was appropriate, too weak, or too strong.
Can be known by sound or (and) light.

〔Example〕

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

1 to 5 show an embodiment of the present invention. In this embodiment, the training aircraft main body 1 is formed by combining a main body upper side 1a and a main body lower side 1b, and has a generally flat box shape as a whole. At the center of the front end of the main body 1 in the width direction, there are provided four arcuate parts 2 corresponding to part of the circumference of the cup. Near the front end of the upper surface of the main body upper side 1a, cylindrical plate support parts 3a and 3b are integrally erected on the left and right sides, respectively, on the main body upper side 1a, and these plate support parts 3a
, 3b are provided with notches 4 at positions facing each other. Similarly, near the front end of the lower surface of the lower main body 1b, cylindrical plate supporting parts 3c are provided at positions corresponding to the plate supporting parts 3a and 3b of the upper main body 1a, respectively.
, 3d are integrally erected on the lower side 1b of the main body, and cutouts 4 are provided in these plate support portions 3c, 3d at positions facing each other.

In the notch 4 of the plate support portions 3a and 3c, one end portion of an elongated rectangular film support plate 5 made of plastic is inserted.
A plastic plate 5 is inserted into the notch 4 of the plate support parts 3b and 3d.
The other ends are respectively fitted, so that the film support plate 5 traverses the recess 2 in a direction parallel to the front end of the main body. A piezoelectric plastic film made of polyvinylidene fluoride (PVDF) (manufactured by Pennwalt, Inc., USA, trade name: Kynar Piezoelectric Film) is attached to the part inside the recess 2 on the back surface of the film support plate 5 (the surface on the inside of the main body 1). )
6 is attached with adhesive.

Electrodes 7.8 are attached to the interior of the upper side 1a of the main body, and a battery 9 that serves as a power source for an electric circuit 12 and a speaker 11, which will be described next, is removably housed between these electrodes 7.8. It has become so. The lower side of the main body 1
An electric circuit board 10 and a speaker 11 are attached to the lower surface of b. On the electric circuit board 1o, a sixth
A circuit 12 as shown in the figure is configured. next,
This circuit 12 will be explained.

The input of the amplifier 13 is connected to a pair of electrodes (not shown) connected to the piezoelectric plastic film 6, so that the output of the piezoelectric plastic film 6 is amplified. The comparator 14 converts the output voltage of the piezoelectric plastic film 6 amplified by the amplifier 13 into (a)
It discriminates into three types: an appropriate voltage range, (b) a voltage smaller than the appropriate voltage range, and (C) a voltage larger than the appropriate voltage range, and calculates eight digital values corresponding to each range.

The timer 15 starts counting when the comparator 14 outputs the discrimination output. The hold circuit 16 holds the peak value of the output of the comparator 14 from when the timer 15 starts counting until it finishes counting a predetermined period of time.

The decoder 17 decodes the output of the hold circuit 16,
The sound generator 18 causes the speaker 11 to generate three different sounds depending on the output of the decoder 17.

Next, the operation of this embodiment will be explained.

When using this putter practice machine, the main body 1 is placed on a floor or ground at an appropriate location, and the user hits a golf ball 20 toward the recess 2 with a putter from an appropriate position.

When the ball 20 hits the film support plate 5 at the four parts 2, the piezoelectric film 6 is deformed together with the film support plate 5, so that the piezoelectric plastic film 6 generates a voltage due to the piezoelectric effect. Here, the magnitude of the voltage generated in the piezoelectric plastic film 6 corresponds to the strength with which the ball 20 hits the film support plate 5, that is, the strength of the ball hit. Therefore, the output voltage of the piezoelectric plastic film 6 amplified by the amplifier 13 is determined by the comparator 14 into the three types of ranges, thereby determining the strength of the ball hit into three types. Therefore, by appropriately setting the threshold value of the comparator 14, the output voltage range of the three types of piezoelectric plastic films 6 that are discriminated by the comparator 14 can be set as follows.
It is possible to correspond to ``a ball that is too weakly hit'', ``a ball that is hit with an appropriate strength'', and ``a ball that is hit too hard''.

Then, as described above, the timer 15 is connected to the comparator 14.
The hold circuit 16 holds the peak value of the output of the comparator unit 4, and the hold circuit 16 holds the peak value of the output of the comparator unit 4 from the start of time measurement with the generation of the discrimination output until the time measurement of a predetermined time ends.
7 decodes the output of the hold circuit 16, the sound generator 18 outputs the output of the comparator 14, that is, "ball hit too weak", "ball hit with appropriate strength",
A speaker 11 is made to generate three different sounds for a predetermined period of time in response to "too strong a ball hit".

Therefore, the practitioner can know from the sound emitted from the speaker 11 whether the force with which he or she hits the ball 20 is appropriate, too weak, or too strong. Note that, of course, if the direction of the ball is bad and the ball 20 does not hit the film support plate 5, no sound is generated.

This pattern practice machine has the above-mentioned configuration, so
It can be made smaller and does not get in the way when not in use. Furthermore, by appropriately selecting the location where the training machine is placed and the location where the ball is hit, the distance and slope from the ball hitting location to the cup (film support plate 5 or recess 2) can be freely selected.

In addition, in the present invention, using an LCD, LED, etc.,
Instead of sound as in the above embodiment, light may be used to inform the practitioner whether or not the strength of the ball is appropriate, or both sound and light may be used. In this way, this putter practice machine allows players to know whether or not the strength of the ball they are hitting is appropriate using sound and/or light, so it is game-like, and the putter practice machine can be practiced with interest.

FIG. 7 shows another embodiment of the invention.

In this embodiment, the shape of the training aircraft main body 1 is different from that of the previous embodiment, and the upper surface of the main body 1 is an inclined surface.
The front end of this upper surface intersects with the front end of the lower surface. The other configurations are the same as those in the previous embodiment.

〔Effect of the invention〕

As described above, the golf putter practice machine according to the present invention has (A) Miniaturization is possible.

(B) The distance and slope from the ball hitting position to the cup can be freely selected.

(C) It is possible to know by sound or (and) light whether or not the force with which the ball was hit is appropriate, and it has a game feel to it, allowing people to practice putter with interest.

This provides an excellent effect.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of a golf putter practice machine according to the present invention, FIG. 2 is a front view showing the embodiment, and FIG.
The figures are a sectional view taken along the line ■-m in Fig. 1, Fig. 4 is a plan view showing the lower part of the main body of the embodiment, Fig. 5 is a plan view showing the upper part of the main body of the embodiment, and Fig. 6. 7 is a block diagram showing the electrical system in the embodiment, and FIG. 7 is a perspective view showing another embodiment of the present invention. 1... Training aircraft body, 5... Film support plate, 6...
・Piezoelectric plastic film, 11... speaker,
14... Comparator, 15... Timer, 16.
...Hold circuit, 17...Decoder, 18...Sound generator. Figure Figure

Claims (1)

[Claims] 1. A film support plate arranged so that a golf ball hit by a putter collides with it, a piezoelectric plastic film attached to this film support plate, and the magnitude of the voltage output from this piezoelectric plastic film. a comparator means for discriminating the voltage into a proper voltage range, a voltage smaller than the proper voltage range, and a voltage larger than the proper voltage range, and a discrimination result notification for converting the discrimination result by the comparator means into sound or (and) light. A golf putter practice machine comprising means.