JPS5995073A - Pitching apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] This invention applies rotation to a ball of baseball, softball, tennis, ping pong, etc. at a specified speed in any direction and curves it, while also allowing the ball to curve in a specified direction at a specified speed. This invention relates to a pitching device that can accurately throw a ball.

Devices that throw baseballs have already been developed as pitching machines, but they can be roughly divided into the following three types.

(1) A device like a cannon that is thrown from a cylinder using compressed air or the force of a compressed spring.

This device allows you to throw a ball with precise control, but it is difficult to apply rotation, or spin, to the ball in order to curve it in any direction, and it also requires a large amount of compression to give the ball a large speed. , which makes the device larger. For this reason, this type of pitching device has not been widely used.

(2) As shown in FIG. 1, a ball 9 is placed between two tires lla and llb that are rotated in opposite directions by a motor 12.
A device that introduces a ball using a guide and uses the frictional force with the tire to throw the ball.

This device is widely used because of its simple mechanism.

By changing the rotation speed of the left and right tires, you can give rotation to the ball. The flying speed of the ball can be changed by the average rotational speed of both tires, the rotation or spin speed of the ball can be changed by the difference in the rotational speed of both tires, and the direction in which the ball curves can be changed by changing the magnitude relationship between the rotational speeds of both tires. Although it is widely used because of these advantages, it has the following drawbacks. (1) A large force must be applied to the ball at the moment it is caught between both tires and passes the point of contact between both tires. (I
T) Severe ball wear due to momentary large frictional force acting on the ball.

(III) When the ball wears out and the surface becomes less uneven, the flight speed of the ball decreases. (IV) The flight direction of the ball is subtly affected by the adhesion between the tires and the ball at the moment when the ball separates from both tires, so each ball has a different flight speed and direction, resulting in a lack of precision in control.
It turns out.

Due to these drawbacks, the surface of tennis balls covered with soft hair wears off quickly, making it impossible to use them as throwing devices for tennis, and requiring the ball to be thrown quickly. It is also difficult to use it for knocking in baseball. .

(3) A pitching device that uses energy stored by a cam and a spring.

As shown in FIG. 2, this device drives an arm 14 with an electric motor 12 via a chino 20 or the like.

If the mechanism is such that energy is stored in the spring 7 by the cam 13 provided on the rotating shaft, and the energy is transmitted to the rotation of the arm after the cam reaches the bottom dead center, then the position shown in the figure will be achieved. The player receives the ball while remaining stationary, and then his arm is swung with acceleration. At this time, the ball in the arm-shaped ball receiver at the tip of the arm flies out of the ball receiver due to centrifugal force, and flies in the tangential direction of the rotation circle of the ball at the time it flies out. This device is widely used because of its simple mechanism, but it has the following drawbacks. (1) The ball leaves the arm when it rolls out of the ball receiver due to centrifugal force when the arm rotates, but the rotational angle of the arm at this moment is determined by the rotational angular acceleration of the arm, that is, the strength of the spring, and other factors. Because it is subtly affected by factors such as frictional force, ball control tends to be inaccurate. (II) Since it is not possible to give rotation (spin) to the ball, it is not possible to curve the ball. (Ir[) Since the speed of the ball is limited by the size of the compression spring, etc., it is difficult to throw the ball at a very fast speed. (TV) This device must be fixed to the ground because it generates a lot of vibration after being thrown. This makes it difficult to use it anywhere outdoors.

Since the three types of devices described above all use electric motors, they require a driving source such as a power source.

Therefore, it is difficult to use it outdoors without a power source.

In the future, computer-based control devices will be able to automatically throw the ball and play baseball, tennis, etc. according to a program.
It is necessary to train ping pong players, but in any of the devices described above, it is mechanically difficult to automate the direction and speed of the ball, as well as the direction and magnitude of the curve.

Therefore, in order to improve these points, the inventor of the present application created a ball that was rotated in a specified direction and speed, and then revolved in a specified plane at a specified speed and direction. By protruding the (ball) from the rotating body at a specified revolution angle, the centrifugal force is released, and the ball is thrown out at a speed faster than the peripheral speed of revolution in the tangential direction of the circular motion trajectory during revolution at that moment. invented the following pitching device that can throw an accurate and fast ball while applying a curve in a specified direction and speed.

One structure of the present invention includes a pedestal for rotatably supporting a rotating body such as a rod, a rotation drive means for providing high-speed rotational drive to the rotary body, and a spherical body holding means provided at an object outlet of the rotary body. and an engaging (hooking) means on the pedestal for driving the ejecting means by engaging the ejecting means at a specified rotation angle of the rotating body that rotates the means for ejecting the sphere held by the sphere holding means. characterized in that the sphere is projected from the rotating body by the projecting means from the state held by the sphere holding means, so that the sphere is thrown out in the tangential direction of the rotation of the rotating body at a speed faster than the circumferential speed of the rotating body. It is something.

According to the present invention, a rotating rod is pivotally supported on a pedestal, a holding portion for holding a ball is provided at the tip of the rotating rod, and while the ball is held by the holding portion, a circle centered on the center of rotation of the rotating rod is formed. do exercise,
Furthermore, when the ball is given a rotational motion by the holding part, the ball revolves around the center of rotation of the rotating rod while rotating on its own axis. When the centrifugal force is released by protruding the ball from the holding part in this state, the ball will spin at a speed faster than the circumferential speed of the rotating body in the tangential direction of the circular trajectory at the time of release. You can throw it out while doing so.

The direction in which the ball curves and the size of the curve are precisely regulated by the direction and speed of the ball's rotation within the rotating body, and the flight speed of the ball is precisely regulated by the revolution speed of the rotating body and the ejection speed determined by the ejection lever and the revolution speed. However, since such rotational motion can be provided as a steady motion rather than an instantaneous motion, the direction and size of the curve and the flying speed of the ball can be accurately controlled. Furthermore, the direction in which the ball flies is the direction of the rotating surface of the rotating body, and the elevation angle when the ball leaves the rotating body is regulated by the rotation angle of the rotating body when the ball is projected from the holding part in the rotating body, that is, the elevation angle of the mount. However, since the direction of the rotating surface and the angle of the pedestal can be precisely regulated mechanically, the flight direction, speed, distance, and thickness of the curve can be controlled extremely accurately.

The pitching device of the present invention can also be used for knocking baseballs, but for the sake of explanation, FIG. 3 shows the pitching of a tennis ball using the device. Figures 4 and 5 are external views showing one embodiment of the present invention in which the device is driven and controlled by human power, and Figure 6 is a sectional view showing the mechanism of the device. It has wheels and can be easily transported to any location. When the pedal 19 is pedaled with the foot, a rotating rod 16, which is a rotating body, is rotated via a chino 20 and a sprocket 21. When the ball 9 is placed in the half of the stand 25 at hand, the ball rolls down the pipe and hits the center shaft 2.
3 is hollow and is connected to the hollow part of the rotating rod, so the ball enters the rotating rod and is pressed against the holding part 17 at the tip of the rotating rod by centrifugal force. Retained. Since the holding part has a mechanism for receiving the ball by the roller 24, when this roller is rotated, the ball supported by the roller in the holding part also rotates.

The pedestal 25 is coaxially and rotatably connected to the column 125 at the center axis of the rotary rod by the ball supply pipe 22, and the column is rotatably installed on the trolley 26.
By moving the pedestal vertically and horizontally, the direction of the rotating surface of the rotating rod can be changed, and by changing the rotation angle of the pedestal, the pitching angle can be controlled in the following manner.

The Q ball is supported by a pair of rollers 24 at a holding portion 17 at the tip of the rotating rod 16, as shown by the broken line in FIG. The ball 9 supported here is adapted to protrude out of the holding portion by an L-shaped protruding lever 1 rotatably attached to a rotary rod. As shown in Fig. 6, this protruding lever 1 is always tensioned by a spring at the other end, so the ball is released from the rotating rod only when the hooking lever 3, which will be described later, engages (hooks) the protruding lever. can stand out.

The hook lever 3 protrudes onto a lever drive section 29 on the pedestal 25 and slides in the radial direction from this drive section, but is normally pressed down by a spring 7 (Fig. The protruding lever 1 will not be caught. However, when the pitching lever 28 (Figs. 4 and 5) attached to the pedestal is pulled, only during one rotation at that moment, the rotating rod is synchronized with the rotation of the rotating rod and drives the hooking lever on the pedestal. The hook lever 3 is moved so that the amount of push-out is maximized at the time when it passes through the section. At this time, as shown in Figure 7, the hook lever 3 hooks the other end of the protruding lever 1 on the rotary rod and rotates the lever, causing the ball to protrude from the rotary rod as shown by the solid line in the figure. become. The ball will fly in the tangential direction of the circular trajectory it is orbiting at the time it is projected from the rotating rod.

The position at which the ball is ejected, that is, the angle at which the ball flies, is determined by the rotation angle of the rotary rod when the ejection lever is hooked, that is, the rotation angle of the gantry. This means that the flight angle and direction of the ball can be mechanically determined by the angle and direction of the mount.

Specifically, the pitching device is as shown in FIG. 15. In this pitching device, a pedestal 25 is mounted and pivoted on a pedestal 61. A hook lever 3 is provided protruding from the side surface of the pedestal 25. A manually operated rotary rod 16 is rotatably supported by a first shaft 112 on an intermediate side surface of the pedestal 25 . The protruding lever 1 is supported by a second shaft 113 so as to be rotatable within a range regulated by a stopper 62 . The hooking lever 3 is fixed so as to engage with a protruding lever at the lower end of the rotating rod when the upper end of the rotating rod 11 is rapidly pulled and the lower end is rotated in the direction of the arrow in order to make the ball fly. However, when it is rotated in the opposite direction, the hook lever is returned to the right side in the figure, and the rotating rod has a mechanism that allows it to pass through without resistance. Therefore, only when throwing a ball with a rotating rod, the hooking lever hooks the protruding lever of the rotating rod and projects the ball from the rotating rod, but when returning the rotating rod to its original position, the catching lever passes through the rotating rod. It turns out.

In this pitching device, the ball is inserted from the proximal end of the rotating rod 16, and the ball passes through the hollow passage of the rotating rod, falls into the ball holding part 17 at the lower end of the rotating rod, and is held. Ru. A protruding lever 1 is provided near this holding portion, and this protruding lever is hooked onto a hooking lever 3 on the pedestal to cause the ball held at the tip of the rotating rod to fly out.

The angle at which the ball is launched can be easily changed by adjusting the inclination of the pedestal 25, which can be manually operated. Although this pitching device cannot pitch quickly, it has an extremely simple mechanism that uses only the basic principles of the present invention, can be powered entirely by hand, and is easy to carry. That is an advantage.

In the above explanation, the ball supported by the holding part at the tip of the rotary rod is ejected using a protruding lever, but the holding part and the protruding lever can also be integrated. An example is shown in FIG. A part of the protruding lever 1 is recessed, and has a deep curved shape that allows the ball to be protruded and held so that it does not come off due to centrifugal force while the lever is rotating. When the rotary rod 16 rotates and the hook lever 3 of the pedestal 25 hits the protruding lever 1, the protruding lever rotates as shown in the figure while holding the pole, and the stopper 62 stops only the rotation of the protruding lever so that the pole can be moved by itself. As it protrudes, the ball can be accelerated and thrown from the rotating rod. As shown in FIG. 16, the arched portion 111 at the tip of the ejecting lever is for preventing the balls (poles) stored in the hollow passageway from entering the ejecting lever that operates to eject. (indicated by a dashed line in the figure) ejection motion/'
7A After completion, separate the spheres in the hollow passage one by one and supply them to the holding section. The larger the ratio of the distance 11 from the center of rotation of the protruding lever to the center of the ball held within the protruding lever 1 to the distance 12 from the center of rotation of the protruding lever to the part that contacts the hooking lever 3, the higher the circumferential revolution speed. Can be cast at greater speeds.

In order to pitch at a fast speed, it is important to not only increase the lever ratio but also to rotate the protruding lever at a fast speed. Therefore, as shown in FIGS. 15 and 16, the protruding lever is provided near the outer periphery of the rotating body having a high circumferential speed. Furthermore, as shown in FIG. 16, in order to rotate the ejector lever at a higher peripheral speed, the ejector lever has its first side 115 centered on the first axis 112 and the ejector lever centered on the second axis 1.
It is installed so that it is located outside the circular arc passing through 13.

As mentioned above, one of the principles of the present invention is to add the circumferential speed of the protruding lever to the circumferential speed of the rotating body to pitch the ball at a faster speed than the circumferential speed of the rotating body. It is important that the direction of pitching by the lever coincides with the tangential direction of the rotating body. To do this, as shown in FIG. 16, when the sphere that is rotated by the rotation of the protruding lever comes near the straight line connecting the first shaft 112 and the second shaft 113, the stopper 62
Only the protruding lever is stopped or reversed. With this structure, the sphere is projected from the rotating body in the tangential direction of the rotating body. In order to project the sphere from the rotating body from this position, as shown in FIG. The ball must be held in at least that portion of the ball before it is pitched.

In the above embodiments, everything is driven manually and controlled mechanically, but it is also possible to use some electrical methods as described below.

That is, the hook lever 3 is operated using electromagnetic driving means such as a solenoid 43 as shown in FIG.

/6 FIG. 9 shows a structure in which a hook lever 3 that can slide within a guide rail 44 is connected to a solenoid 43. When a current is applied, the hook lever moves to the right, but
When the current is cut off, the spring 7 pushes it back to its original position.

The appearance of a pitching device using such electric means is shown in the 10th section.
As shown in the figure. A rotary rod 16 is rotationally driven by an electric motor 12 via a chino 20, and a detector 54 detects the rotation angle of the rotary rod. When a pitching command is issued using the operation button, the rotation angle of the rotary rod is detected, and the solenoid is driven, taking into consideration the rotation speed of the rotary rod and the drive time delay of the solenoid, so that the end of the rotary rod 16 is connected to the control lever 2. , the hook lever 3 is pushed out in the radial outer circumferential direction, and just as the rotating rod passes in front of the operating lever, the hook lever hooks the protruding lever 1 attached to the tip of the rotating rod. The ball is projected from the rotating rod and thrown out. The rotation angle of the rotating rod can be detected without always measuring the angle of the rotating rod. As shown in the figure, the time when the rotating rod passes a certain point on the mount and the rotating rod can be detected using a photo sensor 46 or the like. For example, the rotation angle can be determined from the rotation speed and the time after passing. Drive motor 12
Since the detection of the two rotation angles of the rotation angle and the driving by the solenoid must be performed electrically, a control device is required, but it is mechanically extremely simple.

In a pitching device having such an electric means, the rotation angle at which the ball is projected from the rotating rod can be mechanically and accurately determined by the rotation angle of the operating handle. The operating handle is located on the outside of the rotating part and is in a stationary state, making it extremely easy to operate.

In sports such as baseball, tennis, and ping pong, the ball is given rotation and curved, so in order to use this device for practicing these sports, it is necessary to have the ability to throw the ball while giving it rotation. It is.

To throw the ball while imparting rotation, or spin, it is best to rotate the ball before pitching and then throw the ball in that state.

In this pitching device, the ball is held down by centrifugal force by a holder installed at the tip of the rotation/2 rod. Therefore, if a roller is provided in the holding section and the ball is supported by the roller, and the roller is rotated, the ball can also be rotated.

FIG. 11 shows the ball rotation drive mechanism. Electric motor 12A
, 12B is transmitted to the sprocket 21A21B1 via the chino 20 or the timing belt, thereby rotating a rotary rod on a rotating shaft to which the sprocket 21A is fixed. The other sprocket 21B on the rotating rod side is attached to the rotating rod so that it can rotate freely, so it rotates independently of the movement of the rotating rod, and the rotation of this sprocket is transmitted to the holding part via another chain or timing belt. roller 24
transmitted to. The rotation of this roller causes the ball to rotate by itself while being held. In this way, the ball rotates on its own axis on the holding part while revolving around the rotating rod.

When the rotating rod is rotated with the electric motor 12B for rotating the ball stopped, the chino or timing belt wraps around the sprocket on the rotating rod side, so the roller in the holding section rotates in the opposite direction to the revolution. let The ball supported by the rollers will rotate in the same direction as its revolution. When the electric motor for autorotation is rotated in the forward or reverse direction, the rotation is transmitted to the roller of the holding part, and the ball can be rotated at a speed equal to or less than the rotation of the roller by the rotating rod. can. When the electric motor is rotated in the direction shown in Figure 11, the roller is driven in a direction that reduces the rotation of the ball, and if the rotation speed of the electric motor is set to an appropriate value, it can be stopped completely. By controlling the rotational speed of the ball, it is possible to freely control the rotational direction and rotational speed of the sphere revolving around the rotating rod.

Instead of rotating the rollers of the holder with an electric motor, they can be rotated mechanically from the outside in the following manner. As shown in FIG. 12, a small wheel 5 is provided on the outside of the rotary rod 16, directly connected to the roller 24 of the holding section 17 installed at the tip of the rotary rod 16. At the same time, a spin control plate 4 is provided on the locus of the wheels when the rotating rod rotates, at a position where the wheels can roll when the rotating rod passes. This spin control plate is always pressed down by a spring on the pedestal 25, and can be lifted up when a current is applied to the solenoid. When the rotating rod passes while the spin control plate is pressed down, the upper spin control plate 4A
The roller of the holding part rolls, and by rotating the roller in the direction shown by arrow A in FIG. 16, the ball can be given rotation in the opposite direction. When the spin control plate is pulled up by the solenoid, the roller rolls on the lower spin control plate 4B and can rotate it in the opposite direction to that described above.

With this device, the direction of rotation of the ball can be changed arbitrarily, but unlike the above-mentioned device, it is not possible to control the rotation speed. However, the mechanism becomes extremely simple.

As already mentioned, in the pitching device of the present invention, the pitching (flying) speed of the ball, the firing angle, that is, the direction of the flying blade, the direction of the curve, and the size of the curve can be freely changed, and moreover, It can also be controlled quickly and accurately.

Therefore, these conditions can be expressed as in an electronic computer, etc.
If it could be controlled with a control device that has memory and arithmetic processing functions, it would be possible to reenact a memorable game, or to have a player pitch the same as a former great player and replay the game.

For this purpose, it is necessary to automate the right drive. Automation can be easily accomplished in the following manner. In FIG. 13, the operating handle frame 25 is connected to the electric motor 5.
1 and a form in which it is driven via a worm gear 52 and a mount 2
5. This figure shows the arrangement for driving the support column 125 with an electric motor as well. In addition, in order to automate the rotation of the rotating rod and the rollers in the holding section, electric motors are also required. A position or speed detector is attached to any of the above drive units. Position detectors are attached to the drive parts of the frame and support, and speed detectors are attached to the drive parts of the rotating rod and the rollers of the holding part.

7. In addition, a photosensor 46 is required as shown in FIG. 13 to detect the passing time of the rotary rod. A solenoid is also required to operate the hook lever. The overall structure is the first
It will look like Figure 4. When a position or speed command is issued to each drive unit through a path line 56 and an interface 57 from a control device constituted by a computer 50 having a storage device 55, position or speed information is detected from a detector, and the information is fed back. Then, the drive circuit operates and the motor is driven to match the command value issued by the computer. In this way, each driving section is accurately controlled according to the command value, so that accurate pitching can be performed.

Since the position of the pedestal and support, the speed of the rotating rod, and the speed of the rollers in the holder can be read into the computer, data from when practicing with this pitching device can also be stored.

As mentioned above, a cannon-type pitching device that pitches by instantaneously releasing energy stored in a compression spring is also a cam-type pitching device that pitches by rotating the arm 3 using energy stored in a compression spring. Because energy is instantaneously applied to the ball, it is difficult to accurately control the flight direction and speed. Moreover, the energy required for pitching is small, and most of the stored energy acts as a large impact force on the pitching device itself, so in order to reduce the impact force, the weight of the pitching device must be increased or fixed to the ground. Must. Furthermore, in order to store energy in the compression spring, a large driving force is required, and such a pitching device cannot be driven by human power.

These are major reasons why conventional pitching devices cannot be easily taken out and used outdoors.

In conventional tire-based pitching devices, no large impact force is applied, but in the pitching device of the present invention, energy is instantaneously applied to the ball, but the friction between the ball and the tire at the moment the ball is injected into the tire. Since the force and the adhesive force at the moment the ball is released from the tire have subtle effects on the flight direction and speed of the ball, it is necessary to accurately control various balls with different degrees of wear. difficult.

To throw a ball quickly, you need to effectively use the rotational energy of the rotating body as the kinetic energy of the ball. To throw a ball accurately, you need to keep the ball in steady motion, and while maintaining that state, you can use it effectively to convert the rotational energy of the rotating body into kinetic energy. The ideal is to throw by changing the trajectory without making any changes. The pitching device according to the present invention was developed based on this basic idea. In other words, it is rotated in a specified direction and speed in order to curve in a specified direction and size, and then revolved in that state at a specified rotation speed within a specified rotation plane. Then, at a specified rotation angle, the reaction force generated by the engagement between the rotating body and the mount is used to project the sphere from the rotating body, releasing the centrifugal force and maintaining the rotation during rotation in the tangential direction of the circular trajectory of the revolution. It is possible to pitch a ball at a faster speed than the circumferential speed when it revolves.

To make the ball revolve and rotate, it is sufficient to have sufficient force to overcome the frictional force of the driving part. This pitching device uses rolling bearings in all driving parts, so '2. ! ; Frictional force is small. Therefore, since the driving force required is extremely small compared to conventional pitching devices, it can be driven satisfactorily even by human power.

In order to correct the trajectory from rotational motion to linear motion, all you need to do is release the centrifugal force of the rotating object, but you only need to release the ball you are holding. Since no impact force is applied there, it can be performed very easily and smoothly. Since this pitching device basically adopts this method, the pitching motion can be performed extremely smoothly.

In this pitching device, a lever is used to project the ball from the rotating rotating rod, but the projecting force only pushes the ball a little, but the impact force is very small, so it is not a problem. Rather, the flight speed of the ball is the circumferential speed during revolution, plus the speed at launch, so you can throw a faster ball.

Therefore, this method is adopted.

The great feature of this pitching device is that instead of changing the pitching conditions instantaneously, the pitching conditions are set in advance in a steady or almost stationary state6, and the pitching conditions can be adjusted without any effort to adjust the trajectory and pitch. The advantage is that control is extremely easy and accurate.

The flight speed when throwing a ball from a pitching device depends on the circumferential speed during revolution, that is, the rotation speed of the rotating rod, and the rotation direction and speed of the ball to apply a curve are determined by the rotation direction and speed of the ball during revolution, that is, the rotation during rotation. This is determined by the direction and speed of rotation of the ball when it is held at the tip of the rod, and since both can be rotated constantly, it can be controlled very accurately and easily.

The direction in which the ball is thrown from the pitching device can be determined geometrically by the rotating surface during revolution. This direction can be determined by the angle of the pedestal supporting the rotating rod.

Since the angle of the gantry is controlled in a substantially stationary state, it can be easily and accurately controlled.

The angle of elevation when throwing a ball from a pitching device is determined by the rotation angle at the time of revolution at the moment when the circular trajectory is corrected to a straight line trajectory, that is, the rotation angle of the rotating rod at the time when the ball is projected from the rotating rod. It is determined.

When ejecting the ball from the rotating rod using the hook mechanism installed on the operating lever, the position of the hooking lever and the position and dimensions of the ejecting lever are determined by the pitching device, so the length of the rotating rod when ejecting the ball from the rotating rod is determined by the pitching device. The rotation angle, that is, the elevation angle during pitching, is geometrically determined by the position of the control lever, that is, the rotation angle of the control lever. Therefore, the pitching elevation angle can be accurately controlled by controlling the angle of the operating lever. Since the operating lever is almost stationary, this control is also easy.

The rotation of the rotary rod and the rotation of the ball held in the holding portion within the rotary rod can be performed manually in this pitching device, and the direction of the pedestal and the angle of the operating lever can also be easily adjusted manually. Moreover, if a control device based on a computer with arithmetic functions and memory functions is used to control the servo mechanism, it can be controlled more accurately than by humans.

With this pitching device, pitching conditions can be set in a steady state or a stationary state, so the same pitching mechanism can be used regardless of whether stuttering is controlled using a computer-based control device or manually. One of its major features is that it can be used.

Also, since the pitching conditions can be changed over a wide range, it is possible to throw extremely slow pitches or faster pitches than conventional pitching devices. The same is true for curveballs, but this is because the pitching conditions can be set while the steady state is a stationary state.

Since this pitching device does not apply a large instantaneous force, there is little wear on the ball, and in principle, pitching accuracy is not affected by the state of wear, coefficient of friction, stickiness, etc. of the ball.

After the ball is thrown from the rotating rod, an imbalance equal to the mass of the ball occurs, causing vibration, but it is not large enough to cause a problem. Therefore, the present pitching device can be made small and lightweight, and can be easily carried to any location such as outdoors.

Above, we have mainly explained the flying object as a ball, but any object guided through the passage inside the rotating rod may be used.For example, a badminton shackle is not a ball, but it is weak from the ball supply pipe. It is also possible to send compressed air to the tip of the rotating rod, temporarily hold it in a holding part, and then send the appropriate pressure through the pipe to make it fly out from the rotating rod.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the appearance of a tire-type pitching device that has been widely used in the past, FIG. 2 is a front view of a widely used cam-type pitching device, and FIG. 4 to 8 are explanatory diagrams showing usage conditions when used for practice, and FIG. 4 is a perspective view showing the overall external appearance of the pitching device of the present invention, which is driven and controlled by human power. , 5th
The figure is a perspective view of Figure 4 seen from the opposite direction, Figure 6 is a sectional view for explaining the mechanism of the pitching device shown in Figures 4 and 5, and Figure 7 is the tip of the rotating rod during rotation. A partial front view for explaining the geometrical relationship between the hook lever, the ejecting lever rotating rod, and the ball when the ball held in the lever is ejected using the ejecting lever. Figure 8 shows the hook installed on the operation lever. FIGS. 9 to 14 are perspective views showing a lever drive unit, FIGS. 9 to 14 are electrically driven pitching devices of the present invention, and FIG. 9 is an explanatory partial cross-sectional view showing a hooking lever drive mechanism driven by a solenoid.
FIG. 10 is a perspective view of a pitching device for explaining the basic pitching method of the electrically driven pitching device according to the present invention, and FIG. An explanatory perspective view, FIG. 12 is an explanatory view showing the arrangement of a spin control plate and a spin rotation wheel provided to give rotation to the ball held at the tip of the rotating rod, and FIG. 13 is an explanatory view showing the arrangement of the mount and FIG. 14 is a perspective view showing a motor, a detector, and a drive mechanism when the operation handle is automatically controlled by a servo mechanism of an electric motor, and FIG. 14 is a block diagram for controlling the present pitching device with a control device such as a computer. FIG. 15 is a perspective view showing the external appearance and usage pattern of the simple pitching device according to the present invention, and FIG. 16 is an explanatory diagram showing the operation of the device shown in FIG. 15. 1: Projection lever, 2: Pitching operation lever, 3: Hook lever, 4 Nispin control board, 5: Spin drive wheel, 7: Compression spring, 8: Gear, 9: Ball moon (ball), 10: Pitching device, 11 ．． lla, llb: tire, 12: electric motor, 13: cam, 14: pitching arm, 1
5: Rotating shaft section, 16: Rotating rod, 17: Holding section, 18: Wheel, 19: Pedal, 20: Cheno, 21: Sprocket, 22: Ball supply pipe, 23: Center shaft, 24: Roller,
25: Frame, 26: Dolly, 27: Spring (tension), 28:
Pitching operation lever, 29: Hook lever drive unit, 30 Nilever, 31: Eccentric disc, 32: Sliding rod, 33 Ni guide, 34: Hooking claw, 35: Pitching operation claw, 36
: groove, 37: overhang, 38: pitching operation rod, 39:
Pitching operation claw, 40: Reset pin, 41: Reset operation lever, 42: Extrusion lever drive section, 43: Solenoid, 44 Ni guide rail, 45: Detector, 46: Photo sensor, 47: Ball supply pipe, 48: Rotation shaft Department, 49
: Timing belt, 50; Calculator, 51; Electric IJ3D
C motor, 52: Worm gear, 53: Speed detector, 5
4; Position detector (rotation), 55F storage device, 56: Bus line, 57: Ink ace, 58: 2 Drive circuit, 59; Detection circuit, 60: Hook rod, 6
1: Mounting on stand, 62: Stopper, 111: Arcuate part, 11
2: first shaft, 113: second shaft, 114: second side, 115: first side, 125: strut. Agent: Patent Attorney Jun Kikuta - 3 Engraving of drawings (no changes to the content) JP-A-59-95073 (12) Figure 16 Procedural Amendment Document 2, Title of Invention: Throwing Device 3, Amendment to Person Case Related Patent Applicant Address 4-22 Hayata Sakaemachi, Gifu City, Gifu Prefecture Name Kokujufu 6, drawings subject to amendment

Claims (1)

[Claims] 1. A frame, a rotating body rotatably or swingably supported on a first axis on the frame, and a rotating body pivotably supported on a second axis on the rotating body. a sphere ejecting lever, a sphere holding means rotatably provided on the rotating body in the vicinity of the sphere ejecting lever, and a hook that engages the sphere ejecting lever of the rotating body on the pedestal. A sphere rotation drive source provided on the sphere rotation drive source is provided, and an appropriate rotation transmission means is inserted between the sphere rotation drive source and the sphere holding means to impart rotation to the sphere held on the sphere holding means. When one side of the sphere ejecting lever is engaged with the lever, the other side is held by the sphere holding means and rotates the sphere at a speed equal to the circumferential speed of the rotation circle of the rotating body plus the circumferential speed of the sphere ejecting lever. A pitching device characterized by being designed to pitch while rotating. 2. A patent claim in which the rotation transmission means interposed between the spherical rotation drive source provided on the pedestal and the spherical holding means includes a sprocket rotatably provided on the first shaft and a chino or timing belt. The pitching device according to item 1. (The following 16 lines are blank)