JPH0595570U - Toss batting training machine - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a small and inexpensive tosbatting training machine that can hit a ball to the height of the strike zone with a simple structure. [Structure] A rotary lever 4 mounted orthogonally to a rotary shaft 3 of a motor 2, an arm 8 having a ball support frame 10 mounted at its tip end and having a base end side as a pivot point, and an arm mounted in the middle of the arm 8. A spring 15 for urging the arm 8 upward, and an engagement pin projecting on the side surface of the arm 8 and engaged in the process of the rotation lever 4 rotating downward to push down the arm 8 to a predetermined position and release it. It is characterized by consisting of 11 and.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tosbatting training machine that raises a ball by the elastic force of a spring.

[0002]

[Prior Art]

 In the practice of baseball, each ball is tossed by hand and hitting with a bat. However, with this method, it is difficult to accurately toss, and it has been desired to develop a machine that automatically tosses the ball.

[0003]

[Problems to be solved by the device]

 An object of the present invention is to improve the above-mentioned drawbacks and to provide a small-sized and inexpensive tosbatting training machine capable of hitting a ball at the height of a strike zone with a simple structure.

[0004]

[Means for Solving the Problems]

 The invention according to claim 1 of the present invention is a rotary lever mounted orthogonally to a rotary shaft of a motor, an arm having a ball support frame mounted at its tip end and having a base end side as a pivotal support point, and an arm mounted in the middle of the arm. A spring that urges the arm upward, and an engagement pin that is provided on the side surface of the arm and that engages during the downward rotation of the rotary lever to push down the arm to a predetermined position and release it. It is characterized by that.

Further, according to a second aspect of the present invention, a ball supply guide provided in the vicinity of the ball support frame, a gate provided on the tip side of the ball supply guide so as to be retractable and retractable, and a rotary lever are downward. And a ball replenishing lever for engaging and rotating in the process of rotating toward the gate to operate the gate.

[0006]

[Function] The toss batting practice machine of the present invention places the ball on the ball support frame at the tip of the arm. Next, when the switch is turned on, power is supplied to the motor and the rotation axis of the motor is decelerated and starts to rotate. When the rotary lever rotates, it engages with the engagement pin of the arm located on the rotation trajectory of this tip. Since the arm provided with the engaging pin protruding is rotatably supported, the tip of the rotary lever rotates while engaging with the engaging pin to push down the arm and the spring connected thereto extends.

When the rotary lever further rotates, the engagement with the engagement pin is released, and the tension of the spring causes the arm to rapidly rotate upward, causing the ball placed on the ball support frame at the tip to move upward. Tossed and hit the ball with a bat.

Further, the rotary lever, which is disengaged from the engagement pin, further rotates to engage and rotate the supply lever provided below. When the replenishment lever rotates, the gate connected to it revolves, and the balls roll on the inclined ball supply guide and are supplied one by one to the ball support frame at the tip of the arm.

[0009]

【Example】

 Hereinafter, the present invention will be described in detail with reference to FIGS. A deceleration motor 2 is provided inside a hollow rectangular parallelepiped case 1, and a rotary lever 4 is attached to the tip of a rotary shaft 3 at right angles thereto. The tip end side of the rotary lever 4 is made of hard metal 5 to improve wear resistance. A bracket 7 is provided on the inner wall of the case 1, and a plate-like arm 8 is pivotally supported on the bracket 7. The tip side of the arm 8 penetrates the side surface slit 9 of the case 1 and projects to the outside of the case 1, and a ball support frame 10 is attached thereto.

In the middle of the arm 8, an engaging pin 11 rotatably supported by a needle bearing on the side surface of the motor 2 is provided so as to be located on the passage of the rotary lever 4. .. When the rotary lever 4 rotates downward, as shown in FIG. 3, the hard metal 5 at the tip engages with the engaging pin 11 to rotate the arm 8. Reference numeral 13 is a spring adjusting handle 13 mounted on the upper surface of the case 1, and an adjusting screw 14 is screwed into a screw groove at the lower portion of the case 1, and the lower end of the spring adjusting handle 13 is connected to the middle of the arm 8 via a spring 15. The strength of the spring 15 can be adjusted by rotating and rotating the adjusting screw 14 up and down.

Reference numeral 16 is an angle adjusting screw whose lower end is formed of hard rubber and is supported by being screwed onto the bracket 7. By rotating the angle adjusting screw 16 to move it up and down, the collision angle of the arm 8 is changed. The toss angle of the ball 12 is adjusted to change. Reference numeral 17 denotes a replenishment lever which is provided below the arm 8 and has a tip bent into an L shape as shown in FIG. 2 and rotatably supported by a bearing 18, and the tip is positioned on the passage of the rotation lever 4. It is supposed to do. The replenishment lever 17 is constantly pulled by a spring 19, and when the rotary lever 4 rotates and engages with the replenishment lever 17, it starts to rotate together, and when the engagement is released, it is restored by the spring 19. ..

As shown in FIG. 2, a disc 21 is provided at the other end of the supply lever 17, and a pin 22 is provided on the side surface of the disc 21 so that the pin 22 also rotates as the supply lever 17 rotates. It has become. Reference numeral 23 is a slider, and a long hole 24 is opened at a lower end portion thereof, and a pin 22 protruding from the disc 21 is engaged therewith to form a crank mechanism 25. By rotating the disc 21, the slider 23 is moved up and down. It is designed to rotate. Reference numeral 27 denotes a connecting rod connected to the upper end of the slider 23, which moves up and down as the slider 23 moves up and down, and one end of the connecting rod is projected to the outside of the case 1 and is formed at its tip by a link mechanism as shown in FIG. Gate 28 is connected.

On the outer side wall of the case 1, a ball supply guide 29 whose tip is arranged in the vicinity of the ball support frame 10 is obliquely attached, and a link mechanism is formed on the tip side of the supply guide 29. The gate 28 is provided, and the balls 12 are supplied to the ball support frame 10 one by one by opening and closing the gate 28.

When using the tosbatting practice machine having the above structure, first, a plurality of balls 12 are set in the ball supply guide 29, and the balls 12 are placed on the ball support frame 10 at the tip of the arm 8. Next, turn on the switch (not shown) and hold the bat. When the switch is turned on, power is supplied to the motor 2 from a power source (not shown), and the rotating shaft 3 of the motor 2 is decelerated and starts to rotate.

When the rotary lever 4 rotates in the direction of the arrow as shown in FIG. 1 as the rotary shaft 3 rotates, it engages with the engaging pin 11 located on the rotational locus of this tip. Since the arm 8 projecting the engaging pin 11 is pivotally supported by the bracket 7, when the hard metal 5 at the tip of the rotating lever 4 rotates while engaging with the engaging pin 11, as shown in FIG. Then, the arm 8 is pushed down, and the spring 15 connected thereto is extended.

When the rotary lever 4 is further rotated, the engagement with the engagement pin 11 is disengaged, and the pulling force of the spring 15 causes the arm 8 to rapidly rotate upward, and the lower end of the angle adjusting screw 16 serving as a stopper is hardened. At the same time when the ball 12 is stopped by colliding with the rubber, the ball 12 placed on the ball support frame 10 at the tip of the arm 8 is tossed upward, and the tossed ball 12 is hit with a bat.

Further, the rotary lever 4 disengaged from the engagement pin 11 further rotates and engages with the supply lever 17 provided below to rotate the supply lever 17. When the supply lever 17 rotates, the disc 21 connected to the other end also rotates. The crank mechanism 25, which is composed of a pin 22 and a slider 23 protruding from the circular plate 21, ascends in the elongated hole 24 of the slider 23 with which the pin 22 rotates to lift the slider 23. Along with this, the connecting rod 27 connected to the upper end of the slider 23 also rises, and as shown in FIG. 4, the gate 28 formed by the link mechanism provided at this end rotates, causing the ball 12 to tilt. The supply guides 29 are rolled to be supplied to the ball support frame 10 one by one.

When the rotary lever 4 further rotates and is disengaged from the replenishment lever 17, the replenishment lever 17 is returned by the spring 19, and the disc 21 having the pin 22 protruding therein is also reversed. And the slider 23 goes down. Along with this, the connecting rod 27 connected to the slider 23 is also lowered, and the gate 28 formed by the link mechanism is returned to stop the ball 12 in the ball supply guide 29 and return to the initial state. When the rotary lever 4 of the motor 2 further rotates in this way, the arm 8 is pushed down again and the next ball 12 is tossed.

Since the height of the strike zone varies depending on the height of the batter, when adjusting the height at which the ball 12 is tossed, the spring adjusting handle 13 should be rotated to adjust the tensile force of the spring 15. The toss height of the ball 12 can be adjusted by. Further, the angle of the ball 12 tossed can be adjusted by adjusting the position of the angle adjusting screw 16.

FIG. 5 shows another embodiment of the gate 28, in which two levers 30 a and 30 b are supported on the upper end of the connecting rod 27 by a shaft 31 so as to be openable and closable, and a guide case 32 having an upper opening. It is mounted inside, and the tips of the levers 30a and 30b are projected into the ball supply guide 29 so as to sandwich both sides of the ball 12. When the connecting rod 27 ascends, the gate 28 ascends, the shaft 31 ascends, the levers 30a and 30b open as shown in phantom, and one ball 12 is fed. When the connecting rod 27 is lowered, the levers 30a and 30b are rotated so that the next ball 12 is held and the gate 28 is closed.

Further, in the above-mentioned embodiment, the device for tossing the baseball 12 is explained, but it can be applied to a device for tossing a tenis or table tennis ball.

[0022]

[Effect of the device]

 As described above, according to the toss batting practice machine of the present invention, the arm provided with the ball support frame is supported by the spring, and the arm is rotated by the rotation of the motor to toss the ball. , Can automatically toss the ball to the height of the strike zone.

[Brief description of drawings]

FIG. 1 is a front sectional view showing a tosbatting practice machine according to an embodiment of the present invention.

FIG. 2 is a side sectional view showing the toss batting practice machine of FIG.

FIG. 3 is a front sectional view showing the toss batting practice machine of FIG.

FIG. 4 is a side sectional view showing a ball supply guide of the toss batting practice machine of FIG. 2;

FIG. 5 is a side sectional view showing a ball supply guide according to another embodiment of the present invention.

[Explanation of sign]

 2 Motor 3 Rotating shaft 4 Rotating lever 8 Arm 10 Ball support frame 11 Engaging pin 12 Ball 13 Adjusting handle 15 Spring 16 Angle adjusting screw 17 Replenishing lever 25 Crank mechanism 28 Gate 29 Ball supply guide 30a Lever 30b Lever

Claims (2)

[Scope of utility model registration request] 1. A rotary lever mounted orthogonally to a rotation axis of a motor, an arm having a ball support frame mounted at a tip thereof and having a base end side as a fulcrum of rotation, and an arm mounted in the middle of the arm and mounted above the arm. Tosbatting, which comprises an urging spring and an engagement pin which is provided on a side surface of the arm and is engaged with the rotary lever in the process of rotating downward to push down the arm to a predetermined position to release the arm. Training machine. 2. A ball supply guide provided in the vicinity of the ball support frame, a gate provided on the tip side of the ball supply guide so as to be retractable and retractable, and engaged in the process in which the rotary lever rotates downward. The tosbatting training machine according to claim 1, further comprising a ball replenishing lever that is rotated to operate the gate.