KR20020041941A - Equipment for throwing a ball - Google Patents

Abstract

PURPOSE: Provided is a ball throwing device for the successive batting practice, which can supply balls regularly and can throw the balls accurately with a fixed force and speed. CONSTITUTION: The ball throwing device contains a plain gear(7) having teeth(7a) on the part of the plain gear(7), an operation plain gear(8) contact with the teeth(7a) of the plain gear(7), a ball throwing bar(11) rotated backward by the counter rotation of the operation plain gear(8) and applying counter elastic force to coil springs(12)(12a) by the rotation of the ball throwing bar(11), the coil springs(12)(12a) applying elasticity restoring force to the ball throwing bar(11), wherein the ball throwing bar(11) hits a supplied ball(22) when the ball throwing bar(11) returns momently after applying the elasticity restoring force to the ball throwing bar(11) and the ball(22) is thrown along a guide rail at a fixed angle, and a stopper(15) for intercepting rear balls(22) placed in a supply channel(20).

Description

Equipment for throwing a ball}

The present invention relates to a ball throwing device, particularly in baseball, pitching the ball to the batter without a pitcher in order to be able to practice betting to hit the pitcher pitched ball exactly, or in the required direction The present invention relates to a ball throwing device having a function of, a conventional ball throwing device known in the prior art is equipped with an elliptical bar of a predetermined length on the shaft that is interlocked by a driving means such as a motor, and one end of the shaft is a coil spring When one side of the coil spring is fixed to the device frame and the elliptical bar is locked to the other end of the coil while rotating the elliptical bar with the rotational force of the motor, the tip of the coil spring bound to the elliptical bar rotates to restore the rotational restoring force to the coil spring. Of the coil spring as soon as the tip of the coil spring and the oval bar are separated As the plateau force by the spring is in place the moment so resilient handed down between the coil spring and the leading end address hit has a structure that sphere helmet from the throwing device strike hameuroseo obtain a ready-sphere.

In the conventional ball throwing device as described above, the one end of the coil spring held on the front end of the elliptical bar is pressed by the rotation of the elliptical bar, and the elastic force is applied to the spring. As the restoring force of the spring acts as a force striking the sphere, the transfer of force is applied in the direction perpendicular to the longitudinal direction of the elliptical bar. As the force hitting the furnace sphere was halved, not only the speed of the ball was lowered, but also the mechanical energy loss of the device was high.

Figure 1 is a perspective view of the removed state for the throwing device implemented in accordance with the present invention

2 is a rear partial perspective view as seen from the back of FIG.

3 is a left side partial perspective view of FIG. 1;

4 is an explanatory view of a sphere hitting device and a linkage device in a state before the operation of the ball hitting machine;

5 is an explanatory view of the operation state of the spherical blows and the linkage device due to the rotational force of the motor acting on the spur gear;

6 is an operation state explanatory diagram in which the ball striking rod is retracted to the maximum and the sphere is supplied on the guide rail;

7 is an explanatory view of a state in which the spurs of the spur gear are out of the working spur gear spurs and at the same time, the spurting stroke of the spurs hits the spherical body with the spring force of the spurs.

<Description of the symbols for the main parts of the drawings>

M. Orb Thrower Ma, Mb. Left and Right Main Wall Mc. septum

1. Motor 2. Motor Shaft 3. Drive Sprocket

4,4a. Chain 5. Driven Sprocket 6. Drive Shaft

7. Spur gear 7a. Spur gear tooth 8. operating spur gear

9. Rotating shaft 10. Operating sprocket 11. Sphere hitting rod

12., 12a. Coil spring 13,13a. Free rotation shaft

14,14a. Carrier Sprockets 15. Stoppers 16. Worms

16a. Worm Gear 17. Follower 18. Bracket

19. Ball collection wheel 20. Supply channel 21. Guide rail

22. Sphere

The present invention is to solve the problems in the conventional throwing device as described above and to devise a precise throwing operation without loss of throwing power while a strong throwing force is applied to the present invention in detail based on the accompanying drawings Same as

The drive motor 1 is mounted on the bottom of the spherical throwing device M, which is formed of a rectangular box of a constant size and has two left and right main walls Ma and Mb installed therein. The drive sprocket 3 is installed at the tip of the shaft 2, and the driven sprocket 5 driven by the drive sprocket 3 and the chain 4 is extended to the drive shaft 6, and one side of the drive shaft 6 is rotated. The spur gear 7 is formed with only a portion (about 1/4) of the outer circumference of the outer circumferential surface, and the operating spur gear 8 is rotated such that the spur gear 7 is intermittently in contact with the tooth 7a of the spur gear 7. 9) It is installed at the tip, but at the bottom of the actuating spur gear 8, the spur gear 10 having a diameter slightly smaller than the diameter of the actuating spur gear 8 is integrally formed with the actuating spur gear 8 and the actuating spur gear 8 The shaft 9 arranged in the) is penetrated through the partition wall Mc installed in the ball throwing device M of the quadrangular body, and the right main wall of the ball throwing device M spaced apart from the partition wall Mc by a predetermined distance. (Mb) The ball striking section 11 of a fixed length is fixedly arranged in the middle part of the rotation shaft 9 interposed between the right circumferential wall Mb and the spaced partition wall Mc of the rotation shaft 9. A coil spring 12 (12a) having a symmetrically constant elasticity on the left and right sides of the rotation shaft 9 with respect to the liver 11 is interposed so as to wind the rotation shaft 9, but one side end of each coil spring 12, 12a. Is fixed to the ball striking section 11, and the other ends of the coil springs 12 and 12a are fixed to the proper positions of the right main wall Mb and the partition wall Mc, respectively, so that the rotation of the operation spur gear 8 The spherical striking section 11 is thus also configured to interlock.

The carrier sprocket 10 which is integral with the actuating spur gear 8 is mainly driven, and the carriers are respectively constructed at the same positions of the two free pivot shafts 13 and 13a at positions having a constant distance up and down, respectively. A chain 4a is interposed between three sprockets 10, 14, and 14a, which are driven by the sprockets 14, 14a, and interposed between two upper and lower carrier sprockets 14 and 14a. Two stoppers 15 and 15a are attached to the chain 4a to be positioned up and down as an attachment.

On the other hand, the other side of the transmission shaft (6) passes through the left main wall (Ma) of the ball throwing device (M), and the main worm rim (16) with a torsional torsion angle of 45 ° is mounted on its tip, and the 45 ° worm (16) The driven shaft 17, which is erected at right angles to the worm gear 16a, is supported by the bracket 18, and a ball collecting wheel 19 for collecting and supplying a ball is formed at the tip of the driven shaft 17. The supply path 20 for supplying the ball falling from the ball collecting wheel 19 is delivered to the stopper 15, and the guide rail 21 through which the ball is pitched is provided at the tip of the supply path 20. The entire structure of the ball throwing device M implemented in accordance with the present invention is constituted by being inclined at a constant rising angle in the perpendicular direction.

For reference, the ON and OFF of the driving motor 1 and whether or not the ball is supplied are operations by known switches and sensors, and thus description thereof is omitted. In the figure, reference numeral 22 is a sphere.

Referring to the operation state of the ball throwing device (M) implemented in accordance with the present invention will be described with reference to Figure 4, which is the initial state of the device (M) first Figure 4 is the lower end of the ball hitting section (11) The stopper 15 is positioned at the front end of the supply path 20 and the teeth 7a of the spur gear 11 and the actuating spur gear 8 are in contact with each other. It is in a state.

Now, when the switch of the drive motor (1) is turned ON, the decelerated motor shaft (2) is rotated constantly and the rotation direction is rotated in the direction of rotation of the driven sprocket (5) shown in FIG. 5 and the rotation of the driven sprocket (5). The spur gear 7 arranged on the transmission shaft 6 rotates, so that the working spur gear 8 which is in contact with the tooth 7a of the spur gear 7 reverses and the reverse spur of the working spur gear 8 rotates. The spherical striking rod 11 built up in the operation spur gear rotates backwards. At this time, the reverse spring force is applied to the coil springs 12 and 12a by the rotation of the spur striking rod 11. When the stroke 11 is rotated, the spur gear 7 which is in contact with the teeth of the operating spur gear 8 rotates, and the last tooth 7a of the spur gear 7 disengages from the teeth of the spur gear 8. At the same time, the ball restoring force of the two coil springs 12 and 12a is applied to the ball striking rod 11 so that the ball striking rod 11 is instantaneously homed. Is to hit the sphere 22, the given supply stand (22) is thrown with a slope of a predetermined angle along the guide rail (21). However, at this time, the stopper 15 downwards to block the rear spheres 22 in the supply passage 20.

The spherical blow section 11 is returned to its original position and the spur gear 7 continues to rotate so that the teeth of the spur gear 7 are brought into contact with the teeth of the working spur gear 8 to prepare for the next blow. In addition, the stopper 15 is upward and the stopper 15a is also raised to supply the next sphere and is blocked by the stopper 15a to wait for the next throw. In addition, the operating sprocket 10 and the carrier sprockets 14 and 14a arranged on the operating shaft 9 are also rotated in the direction of the arrow by the chain 4a as shown in FIG. 5 and attached to the chain 4a. As the stopper 15, which is a piece, is raised, the ball striking section 11 is returned to its original position, and at the same time, the next to be thrown sphere 22 is supplied and waiting.

Then, when the electric shaft 6 on which the driven sprocket 5 is arranged starts to rotate, the worm 16 built on the electric shaft 6 rotates, and the worm gear 16a which is in contact with the worm 16 at right angles is rotated. And the ball collecting wheel rotates when the shaft 17 on which the worm gear 16a is formed rotates and supplies the ball to the ball collecting wheel 19 built on the shaft 17 according to the rotation of the shaft 17. The balls accommodated in 19 are supplied to the ball supply path 20 in order.

As described above, the device is configured and operated precisely so that the spur gear 7 continues to rotate so that the teeth 7a of the spur gear 7 are continuously contacted with the working spur gear 8 again at regular time intervals. Since the ball is continually throwing, you can practice hitting the bat with bats that hit the ball correctly.

Claims (1)

The drive motor 1 is mounted on the bottom of the spherical throwing device M, which is formed of a rectangular box of a constant size and has two left and right main walls Ma and Mb installed therein. The drive sprocket 3 is installed at the tip of the shaft 2, and the driven sprocket 5 driven by the drive sprocket 3 and the chain 4 is extended to the drive shaft 6, and one side of the drive shaft 6 is rotated. The spur gear 7 is formed with only a portion (about 1/4) of the outer circumference of the outer circumferential surface, and the operating spur gear 8 is rotated such that the spur gear 7 is intermittently in contact with the tooth 7a of the spur gear 7. 9) It is installed at the front end, but at the bottom of the actuating spur gear 8, the actuating spur gear 10 has a diameter smaller than the diameter of the actuating spur gear 8 integrally with the actuating spur gear 8 and the actuating spur gear 8 The shaft 9 arranged in the) is penetrated through the partition wall Mc installed in the ball throwing device M of the quadrangular body, and the right main wall of the ball throwing device M spaced apart from the partition wall Mc by a predetermined distance. (Mb) Thus, the ball striking section 11 of a predetermined length is fixedly arranged in the middle part of the rotation shaft 9 interposed between the right main wall Mb and the spaced partition wall Mc of the rotation shaft 9 and fixed. A coil spring 12 (12a) having a symmetrically constant elasticity on the left and right sides of the rotation shaft 9 with respect to the liver 11 is interposed so as to wind the rotation shaft 9, but one side end of each coil spring 12, 12a. Is fixed to the ball striking section 11, and the other ends of the coil springs 12 and 12a are fixed to the proper positions of the right main wall Mb and the partition wall Mc, respectively, so that the rotation of the operation spur gear 8 According to the spherical striking section 11 is also interlocked, and the main operation sprocket 10, which is addressed integrally with the actuating spur gear 8, is mainly driven, and the two free rotating shafts 13, respectively, at positions having a constant distance up and down ( Three sprockets 10, 14, 14a driven by carrier sprockets 14, 14a respectively constructed at the same position of 13a). The chain 4a is interposed between the two upper and lower carrier sprockets 14 and 14a, and the two stoppers 15 and 15a are mounted up and down on the chain 4a positioned between the two upper and lower carrier sprockets 14 and 14a. The other side of the transmission shaft 6 penetrates the left main wall Ma of the ball throwing device M so that a main worm worm 16 having a tooth twist angle of 45 ° is mounted on the tip thereof, and the 45 ° worm 16 is mounted thereon. The worm gear 16a, which is in contact with each other at right angles, is supported by the bracket 18, and the ball collecting wheel 19 for collecting and supplying the ball is arranged at the tip of the driven shaft 17. The supply path 20 for supplying the ball falling from the ball collecting wheel 19 is delivered to the stopper 15, and the guide rail 21 through which the ball is pitched is provided at the tip of the supply path 20. Spherical throwing device to be mounted inclined at a constant ascending angle in a direction perpendicular to the.