Pitching training aid
View Patent ↗The present invention relates to a pitching training aid for shadow pitching training, the pitching training aid comprising: a receiving body which includes an inner receiving space and has openings at both sides thereof, and replicates a baseball in a state where a user encompasses and holds the receiving body with his/her hand or wears the receiving body on his/her fingers through the receiving space; a locking holder which is detachably inserted and fixed in the receiving space through the opening of the receiving body, and provides a locking region where locking through-holes are formed in the longitudinal direction, so as to allow at least one finger to be fitted and locked into the locking holder in the longitudinal direction, the locking holes extending in a curved shape having a predetermined curvature; and an elongated body which has a rod shape extending a predetermined length from one side of the receiving body, and provides load and vibration while being elastically deformed and restored by rotation of a user's arm.
1. A pitching training aid for shadow pitching training, comprising: a receiving body having openings in two sides thereof, including a receiving space to simulate a baseball;
a stopping holder removably inserted into the receiving space through the openings of the receiving body, having a stopping hole formed therethrough along a lengthwise direction thereof to provide a stopping portion, the stopping hole extending in a curved shape with a predetermined curvature; and
an extension body extending from one end of the receiving body in a rod shape having a predetermined length.
2. The pitching training aid of claim 1 , wherein the stopping holder includes a holder body formed in a tubular shape having the stopping hole formed therethrough and fastened to the receiving space of the receiving body and an anti-escape member preventing the holder body from escaping off the receiving body.
3. The pitching training aid of claim 2 , wherein the holder body includes a dividing protrusion that protrudes along a lengthwise direction of the stopping hole and divides the stopping hole.
4. The pitching training aid of claim 2 , wherein the stopping hole decreases in size from an entrance end to an exit end.
5. The pitching training aid of claim 2 , wherein the anti-escape member includes an anti-escape protrusion at each of two opposite ends, in a length direction, of the holder body, the anti-escape protrusion secured to an end of the receiving space of the receiving body to prevent the holder body from moving in a lengthwise direction of the receiving space of the receiving body.
6. The pitching training aid of claim 1 , wherein the receiving body has a plurality of gripping recesses formed in an outer circumferential surface thereof to provide a gripping portion.
7. The pitching training aid of claim 1 , wherein the extension body includes a post part formed on one end of the receiving body to provide support and an elastic shaft extending, in a rod shape, from the post part.
8. The pitching training aid of claim 7 , wherein the elastic shaft thins as the elastic shaft extends, in a straight line, away from the post part.
9. The pitching training aid of claim 7 , wherein the extension body further includes a weight removably coupled to an end of the elastic shaft to provide weight.
10. The pitching training aid of claim 9 , wherein the weight includes a weight cap fitted and fastened to the end of the elastic shaft and having a built-in metallic weight body, and a cap fastening member fastening the weight cap to the end of the elastic shaft.
11. The pitching training aid of claim 10 , wherein the cap fastening member includes a hook-and-loop fastener fixed in a form of wrapping around the weight cap.
12. The pitching training aid of claim 10 , wherein the cap fastening member further includes a cap stopping groove circumferentially formed, in a groove shape, in an outer circumferential surface of the elastic shaft and a cap stopping jaw circumferentially protruding from an inner circumferential surface of the weight cap and secured in the cap stopping groove.
13. The pitching training aid of claim 1 , further comprising a holder pressurizing member installed in the receiving body to adjust a size of the stopping hole while pressurizing the stopping holder.
14. The pitching training aid of claim 13 , wherein the holder pressurizing member includes a pressurizing plate partially facing the stopping holder in a state movably coupled to the receiving body, and pressed by external force to move toward the stopping holder to reduce the size of the stopping hole, a bolt guide fastened to the receiving body while contacting the pressurizing plate to provide a screw coupling portion, and a pressurizing bolt screwed to the bolt guide and protruded toward the pressurizing plate by rotation to move the pressurizing plate.
15. The pitching training aid of claim 1 , further comprising a sensor unit embedded in the receiving body or the extension body to detect at least one selected from the group consisting of an acceleration, angular velocity, and orientation of the rotation of a user's arm and a communication unit applying a detection signal obtained by the sensor unit to an application installed on the user's terminal.
16. The pitching training aid of claim 15 , wherein the application calculates at least one selected from the group consisting of a pitching posture, ball speed, and ball rotation axis based on the detection signal applied from the sensor unit and output and store to the terminal.