JP2000202082A - Training aid for swinging bat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To precisely grasp how a bat is being swung by a method wherein a measuring instrument comprising a spring and a spherical weight is incorporated into a cavity formed in a baseball bat to display the speed of the weight when it has reached a measuring point and to display how many time the weight has passed the measuring point. SOLUTION: A baseball bat 1 is divided into two parts and a groove 2 is formed in each parts, and sensors 3, 4 are arranged in each groove. The sensors are connected to measuring instruments 5, 6 by wires. An end of a spring 8, to the forward end of which a spherical weight 7 is attached, is fixed to the groove 2 at a location on the side of a grip of the bat 1. Thus, when the bat 1 is swung, the weight 7 is moved in the groove 2 toward the forward end of the bat 1 so as to be sensed by the sensors 3, 4. That is, the sensor 3 senses a point to which the weight 7 has moved, while the sensor 4 measures how many times the weight 7 has passed the point. As a result, if a reference of the power of swinging of the bat is set by means of the spring constant of the spring 8 and the location to which the weight 7 has moved, the sharpness of swinging can also be grasped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mainly used for baseball swing practice, and can also be used for tennis, golf and the like.

[0002]

2. Description of the Related Art Conventionally, swing practice involves swinging a bat many times in order to make a batting form, strengthen a body muscle, and to grasp the feeling of swinging a bat. To make a batting form, he swings in front of a mirror and checks his batting form. The sharpness and speed of swinging the bat depend on one's own perception because there is no measuring instrument.

[0003]

In the conventional swing, the practice of swinging the bat many times is performed to grasp the feeling of batting, but the sharpness and speed of the swing of the bat are measured. I can't set goals and I'm always confused. If you have an instrument that measures the sharpness, speed, and number of times the bat is shaken, you can grasp your current situation and perform swinging efficiently.
Therefore, there is a need for a measuring instrument that assists the swing.

[0004]

According to a first aspect of the present invention, there is provided a swing assisting device, wherein a measuring device is built in the bat, and when the bat is shaken, the sharpness and the number of times of swinging are measured. is there. The bat 1 is divided into two parts, grooves 2 are formed on both sides, sensors 3 and 4 are installed in the grooves 2, and the sensors 3 and 4 are wired to measuring instruments 5 and 6 provided on the bat 1. The end of the spring 8 with the weight 7 attached to the tip is fixed in the groove 2 on the grip side of the bat. When the bat 1 is shaken, the weight 7 advances in the groove 2 toward the tip of the bat 1 and is sensed by the sensors 3 and 4 installed in the groove 2. The sensor 3 measures the arrival point of the weight 7, and the sensor 4 measures the number of times the weight 7 passes the position where the sensor 4 is installed. If the standard of the sharpness of the swing is set in advance based on the strength of the spring 8 and the position of the arrival point of the weight 7, it becomes a guide for the swing, and the swing can be performed while recognizing the sharpness of the swing together with the number of times displayed. it can.

In the swing assisting device according to the second aspect, the arm 11 is formed in a U-shape, and the light emitting device 1 is provided on the upper portion.
3 and 14, the home plate 12 is fixed at the lower part, and the light receivers 15 and 16 are installed at the front and rear parts. Infrared rays 17, 18 between the light emitters 13, 14 and the light receivers 15, 16
, The passing time of the bat 22 traversing the infrared rays 17 and 18 is measured, and the speed and the number of times the bat 22 has passed are displayed on the display plate 20 of the measuring instrument 19.
A mirror 21 is provided on the U-shaped arm 11 so that the form at the time of swing can be used for correction.

[0006]

In the swing assisting device according to the first aspect of the present invention, the bat is not divided and the center portion is cut out.
It can also be created by fixing springs with weights and embedding sensors and measuring instruments.

In the swing assisting device according to the first aspect, the sharpness of the swing can be checked each time by attaching a reset button to the measuring device.

[0008] In the swing assisting device according to the second aspect, a caster can be provided at the bottom of the U-shaped arm so that the swing assisting device can be moved.

In the swing assisting device according to the second aspect, a radio wave or the like can be used instead of infrared rays.

[0010]

An embodiment will be described with reference to the drawings. FIG. 1 is a partially cutaway perspective view of the swing assisting device according to the first embodiment. When the two divided bats 1 are put together, the two grooves 2 match to form a cavity in the bat 1. The weight 7 fixed to the spring 8 passes through this cavity. The sensor 3 is installed in the groove 2 and wired to the measuring device 5, and the speed is displayed as the weight 7 reaches each point of the sensor 3. Also,
The sensor 4 is installed in the groove 2 and wired to the measuring instrument 6, and the weight 7
The number of times that has passed through the sensor 4 is read. The read arrival points and the number of times are displayed on the display boards of the measuring instruments 5 and 6 incorporated in the bat 1. The end of a spring 8 having a weight 7 at its tip is fixed to the groove 2 on the grip side of the bat.

FIG. 2 is a cross-sectional view of the swing assisting device according to the first aspect, and shows a moving state of the weight and a position of the sensor. The weight 7 fixed to the spring 8 moves in the groove 2 of the bat 1 at every swing, and the arrival point of the weight 7 can be confirmed by the sensor 3, so that the sharpness of the swing can be recognized. The sensor 4 is for reading the number of times of swing, and the sensor 4 is installed at a position where the weight 7 always passes. When the weight 7 reaches the highest point, the terminal
Is returned to the original position by the action of the spring 8 fixed near the handle.

FIG. 3 is a perspective view of the swing assisting device according to the first aspect. The figure shows a state in which two divided bats 1 are fitted and integrated into one. On the surface of the bat 1, there are display plates of measuring instruments 5 and 6 for indicating the sharpness and the number of swings.
Are tied up by band 9.

FIG. 4 is a perspective view of the swing assisting device according to the second aspect. The arm 11 is formed in a U-shape, and the light emitters 13 and 14 are installed on the upper part. The home plate 12 is fixed to the lower part of the arm 11,
A light receiver 15 is installed at the front of the camera and a light receiver 16 is installed at the rear of the camera. An infrared ray 17 is irradiated between the light emitter 13 and the light receiver 15 and an infrared ray 18 is irradiated between the light emitter 14 and the light receiver 16.
The time when the swinging bat 22 passes through the infrared rays 17 and the infrared rays 18 was measured, and the result of calculating the passing time with respect to the distance between the light receivers 15 and 16 of the home plate 12 by the measuring instrument 19 was used. The speed is displayed on the display panel 20, and the number of times the bat 22 has passed the infrared rays 17 and 18 is displayed on the display panel 20. A mirror 21 is installed on the arm 11 at a position in front of the swinging person to help correct the form during swinging.

FIG. 5 is an explanatory view of the swing assisting device according to the second aspect. At the time of swing, the bat 22 is infrared 17,
18 shows a state of passing through.

[0015]

By using the swing assisting device according to the present invention, it is possible to measure the sharpness, speed, and number of times the bat is shaken. Unlike the method, there is no need to make useless efforts. Since a goal can be set and the swing can be performed, a conflict arises, and there is no hesitation, and it is possible to accurately grasp the current situation of oneself. It is also useful for correcting forms.

[Brief description of the drawings]

FIG. 1 is a perspective view of a swing assisting device according to claim 1.

FIG. 2 is a sectional view of the swing assisting device according to claim 1;

FIG. 3 is a perspective view of the swing assisting device according to claim 1;

FIG. 4 is a perspective view of the swing assisting device according to claim 2;

FIG. 5 is an explanatory view of the swing assisting device according to claim 2;

[Explanation of symbols]

 Reference Signs List 1 butt 2 groove 3, 4 sensor 5, 6 measuring device 7 weight 8 spring 9 band 11 arm 12 home plate 13, 14 light emitting device 15, 16 light receiving device 17, 18 infrared ray 19 measuring device 20 display plate 21 mirror 22 bat

Claims (2)

[Claims] 1. A cavity is provided inside a baseball bat, one end of a spring is fixed to a lower end of the cavity, a weight of a sphere is fixed to the other end of the spring, and the weight of the sphere reaches a measurement point provided on a side surface of the cavity. A swing assisting device which has a built-in measuring function for reading the arrival position, displaying the speed, reading the number of times the weight of the sphere has passed a certain measurement point, and displaying the number of times. 2. A home plate provided with two light receivers is installed below a U-shaped arm on which two light emitters are installed,
Reads the transit time when the bat traversed by the infrared ray irradiated between the light emitting device and the light receiving device, displays the passing speed and the number of passes of the bat on the display panel of the measuring instrument, and further has a mirror for posture correction A swing assist device characterized by that: