JPH10127849A - Golf training apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a golf training apparatus which displays how a golf ball curves to the right or to the left (slicing or hooking) by detecting rotation in the lateral direction of the struck ball itself. SOLUTION: A shaft 3 is provided so as to rotatably support a golf ball 4 freely at one end thereof and a disk 5 is provided with a slit 6 direct connected to the other end of the shaft. Two sets of photo interrupters are arranged with a projection element and a photodetector facing each other to detect the slit 6 of the disk 5. Light emitting elements comprising LEDs are arranged in a circle very closely, likewise, photodetectors comprising phototransistors are arranged thereinside and additional one photodetector is provided to form a signal transmitting section 15. A light source from the light emitting elements is transmitted to the projection element with an optical fiber 9. The golf ball, the shaft and the disc are turned together and the light source part transmitted is received by the photodetectors as the slit passes it to be transmitted to the signal transmitting section. The light is converted to an electric signal and a controller detects the direction of rotation and the rotational speed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention
The golf ball detects the lateral rotation of the golf ball itself launched by the golfer and indicates the degree of bending (hook and slice) of the golf ball hit by the golfer himself.

[0002]

2. Description of the Related Art As a conventional golf practice apparatus, a golfer
There has been a golf practice device that detects only the speed at which the golf ball is launched when the golf ball is hit and the angle at which the golf ball is hit.

[0003]

In the conventional golf practice apparatus described above, a contact point brush is used to transmit an electric signal relating to the speed of the golf ball and the flying angle to the apparatus body. I have. However, there is a life due to the contact type in which the brush and the contact are brought into contact, and the above-mentioned electric signal may be momentarily interrupted due to the presence of the contact. Also,
Data such as the speed of the golf ball and the angle at which the golf ball flies are transmitted to the main body of the device by electric signals. It is conceivable that a shock such as hitting the tool breaks a component such as an electric circuit. In addition, since the above-described apparatus merely looks at the direction of travel of the golf ball, not the lateral rotation of the golf ball, it is necessary to use a hook or slice (lateral rotation of the ball) which is a fundamental skill for a golfer to improve. However, it was not possible to detect information on the degree of bending of the ball caused by this.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the problems in the prior art, and has a disk having a shaft for rotatably supporting a golf ball at one end and a slit directly connected to the other end of the shaft. And two sets of photo-interrupters in which a light-emitting element and a light-receiving element for detecting a slit of the disk are provided, and a light-emitting element composed of LEDs is arranged in a circle without any gap. A light receiving element composed of a transistor is arranged in a circle without any gap, and a signal transmission section in which a light receiving element composed of one phototransistor is disposed is further provided. Wherein the golf ball, the shaft and the disk provided with the slit rotate integrally, and the optical fiber causes a photo interrupt. When the slit passes through the light source portion transmitted to the light projecting element, the light is received by the light receiving element of the photointerrupter, transmitted to the light receiving element of the signal transmission unit via the optical fiber, and received by the light receiving element of the phototransistor. Light is converted into an electric signal and transmitted to a control device to detect the rotation direction of the golf ball, calculate the interval between signals indicating the rotation direction of the golf ball, and propose a golf practice device that detects the rotation speed. Things.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A golf ball is attached to a lower end of a vertical shaft provided in a rotation detecting section, and a golf ball provided with a slit and two photo interrupters at an upper end of the vertical shaft. A golf ball rotation detection unit, which detects rotation information of the golf ball detected by the golf ball rotation detection unit;
The rotation information of the golf ball is transmitted, the information is calculated by a CPU provided in the apparatus main body, and the rotation direction and the rotation speed of the ball are displayed on a display section provided in the apparatus main body.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a golf practice machine according to the present invention. Reference numeral 1 denotes a rotation detection unit of the golf ball, which is covered by a metal box 2 excluding a lower part. Reference numeral 3 denotes a metal shaft. A metal rod 3A is built in the shaft 3, and a golf ball 4 is attached to a lower end portion of the metal rod 3A. A metal or resin disk 5 is provided at the upper end of the shaft 3 described above. A slit 6 is provided at an arbitrary position on the disk 5 at one position. Reference numerals 7 and 8 denote photointerrupters, which are provided with two light emitting portions at intervals so as to detect the slits 6 provided on the disk 5 described above. A light-receiving unit is disposed at a position corresponding to each light-emitting element).

Reference numeral 9 denotes an optical fiber, which is connected to the above-described photo-interrupters 7 and 8, and transmits information on the rotation direction of the golf ball 4 to a light-receiving element described later. Reference numeral 10 is a cylinder that protects the optical fiber-9. The cylindrical body 10 is provided with the golf ball 4 described above.
Is integrated with the box 2 of the detection unit 1 of FIG. Reference numeral 11 denotes a bearing provided in the golf practice machine body 14. As a vertical movement (in the direction of arrow 13) when a golfer (not shown) hits the golf ball 4 with the club 12, the cylindrical body 10 integrated with the golf ball rotation detector 1 rotates smoothly. It is provided to be able to.

FIG. 2 and FIG. 3 show a signal transmitting section composed of a phototransistor provided in the golf practice machine main body 14. At the center of the signal transmitting section 15, a light receiving element 16 composed of one phototransistor is provided. I have. Next, a light receiving element 17 composed of a plurality of phototransistors is arranged on the concentric circle.
Are arranged in a circle without any gaps, and outside the circle, the light emitting elements 18 composed of a plurality of LEDs are arranged in a circle with no gaps in a concentric circle. Each light receiving element 16, 17 provided in the signal transmission unit 15
And the light emitting element 18 are opposed to the plurality of optical fibers 9 built in the above-described cylindrical body 10. The light emitted from the light emitting element 18 provided in the signal transmission unit 15 is combined into two optical fibers in the cylindrical body 10 and the photo interrupter 7 provided in the golf ball rotation detecting unit 1 is provided.
And 8 are respectively connected to the light emitting sections.

Next, the light receiving portion of the photo interrupter 7
The optical fibers facing the second light receiving element 17 of the signal transmission unit 15 provided in the golf practice machine body 14 are collectively connected to one optical fiber. An optical fiber corresponding to a light receiving element 16 provided at the center of the signal transmitting unit 15 is connected to a light receiving unit of the photo interrupter 8 provided in the golf ball rotation detecting unit 2.
The reason why the light receiving elements 16 and 17 and the light emitting element 18 are arranged in a circle is that the cylindrical body 10 containing the optical fiber 9 is integrated with the box 2 of the golf ball rotation detecting unit 1. When the golf ball 4 is launched by a golfer who does not fly, it flies in the direction of arrow 13. As described above, the cylindrical body 10, the golf ball 4, the shaft 3, and the disk 5
Is integrated with the golf ball rotation detecting unit 1 in which the light is stored, so that the cylindrical body 10 also rotates in accordance with the movement of the arrow 13 in accordance with this movement. Since the fiber 9 naturally rotates, the built-in optical fiber 9 is also provided in a state of being arranged in a circular shape. Since the elements 18 are arranged concentrically, signals can be transmitted without interruption.

Light receiving element 1 provided in signal transmission section 15
The information received by the CPUs 6 and 17 is CPU, ROM, R
The signal is transmitted to the control board 19 provided with the AM, the adder circuit, and the LCD driver. The information transmitted to the control board 19 is subjected to calculations and the like by the above-described CPU, ROM, RAM, and addition circuit, and is displayed on a display portion 20 provided on the golf training machine main body 14, and information on the rotation direction of the golf ball 4. Is displayed.

Next, the actual operation will be described. When the golfer swings the golf ball 4 with the club 12, if the golf ball 4 rotates laterally, the golf ball 4 is rotated.
Golf ball by the shaft 3A attached to the
The disk 5 also rotates in conjunction with the rotation of the disk 4. When the rotation of the golf ball 4 (the rotation of the disk 5) rotates to the left, the slit 6 provided in the disk 5 passes through the position of the first photo interrupter 7. At this time, the light emitted from the light emitting element 18 provided in the signal transmitting section 15 is transmitted to the light projecting section of the photo interrupter 7 through the optical fiber 9, and the light receiving element of the photo interrupter 7 is Is received by the

The light serving as information on the rotation direction of the golf ball 4 passes through the optical fiber 9 again and is received by the light receiving element 16 provided in the signal transmission unit 15. At this time, a phototransistor (not shown) is provided in the signal transmission unit 15 to convert an optical signal into a high-level electric signal, which is transmitted to a control board 19 provided with a CPU, an addition circuit, and the like. The rotation information of the golf ball 4 is displayed on a display portion 20 provided on the golf practice machine body 14. As described above, the signal transmitted to the CPU provided on the control board 19 when the disk 5 rotates in the left direction is because the photointerrupters 7 and 8 are provided at slightly shifted positions as shown in FIG. Are input with a slight delay. The CPU knows that the golf ball 4 is rotating counterclockwise if, for example, the signal of the photointerrupter 7 is at a high level first among the signals of the photointerrupters 7 and 8.

When the golf ball 4 rotates to the right, the slit 6 provided in the disk 5 becomes the second photo interrupter 8
Is transmitted from the light emitting element 18 provided in the signal transmitting section 15 to the light projecting section of the photo interrupter 8 through the optical fiber 9 and at the moment the slit 6 passes, 8 is received. The light passes through the optical fiber 9 again and is received by the light receiving element 17 in the same manner as when the golf ball 4 rotates to the left. As shown in FIG.
It can be seen that the rotation of the golf ball 4 is clockwise since the electrical signal from the controller is transmitted to the CPU provided on the control board 19 at a high level first. Further, the CPU provided on the control board 19 can calculate the rotation speed of the golf ball 4 by calculating the interval of the High level signal indicating the rotation direction of the golf ball 4. These pieces of information are displayed on a display section 20 provided on the golf practice machine body 14.

[0014]

The present invention provides a golf ball in a relatively simple manner.
Since the direction of rotation of the golf ball can be detected, the rotation (right or left) of the golf ball struck by the golfer can be known, and the golf ball is conscious of the lateral rotation of the golf ball that causes hooks and slices. By doing so, you can contribute to improving your golf.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a golf training machine.

FIG. 2 is an enlarged view of a main part of a signal transmission unit.

FIG. 3 is an enlarged view of a main part of a signal transmission unit.

FIG. 4 is a diagram showing signal timings.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Golf ball rotation detection part 2 Metal box 3 Metal shaft 4 Golf ball 5 Disk 6 Slit 7 Photo interrupter 8 Photo interrupter 9 Optical fiber 10 Cylindrical body 11 Bearing 12 Club 13 Arrow showing vertical movement 14 Golf practice machine body 15 Signal transmission unit 16 Light receiving element 17 Light receiving element 18 Light emitting element 19 Control board 20 Display part

Claims (1)

[Claims] 1. A shaft for rotatably supporting a golf ball at one end, a disk provided with a slit directly connected to the other end of the shaft, a light emitting element and a light receiving element for detecting the slit of the disk. Two sets of opposing photointerrupters are provided, light emitting elements composed of LEDs are arranged in a circle without any gaps, and light receiving elements composed of phototransistors are arranged inside the light emitting elements in a circle without any gaps. A signal transmission unit having a light receiving element comprising: a light transmitting element for transmitting a light source from the light emitting element to a light emitting element of the photointerrupter through an optical fiber, wherein the golf ball, the shaft, and the slit are provided. When the slit passes through the light source portion transmitted to the light emitting element of the photointerrupter by the optical fiber, the disk rotates together. The light received by the light-receiving element of the interrupter is transmitted to the light-receiving element of the signal transmission unit via an optical fiber, and the light received by the light-receiving element of the phototransistor is converted into an electric signal, transmitted to the control device, and transmitted to the golf ball. A golf practice apparatus comprising: detecting a rotation direction of a golf ball; calculating an interval between signals indicating the rotation direction of the golf ball; and detecting a rotation speed.