JPH022366Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a pitching machine for batting practice, and more specifically, it is used to alternately switch the pitching direction to the left or right at a slight angle toward the pitching target. The present invention also relates to an adjusting device for positioning each pitching direction.

(Prior Art) Some pitching machines are constructed so that the pitching machine body alternately pitches shots that change into a shot and a curved ball for baseball batting practice.

With such a pitching machine, it is necessary to make the pitch slightly to the left or right of the pitching target as the ball changes, and it is necessary to position the pitching direction of the pitching machine body in this way. be.

Conventionally, such pitching machines have the following configuration. That is, the main body of the pitching machine that throws the ball is rotatably supported around the vertical axis on the fixed side of the support base so as to vary the pitching direction. This pitching machine main body is rotated by a gear device driven by an electric motor. In addition, in order to position the pitching direction at a predetermined position to the left or right of the pitching target,
A limit switch is provided to detect the rotational position of the pitching machine body, and the pitching direction is determined by stopping the electric motor by operating the limit switch.

By the way, in the above configuration, the amount of rotation of the pitching machine main body during the above positioning is small;
Therefore, the detection position by the limit switch must be determined by fine adjustment. However, such fine adjustment is complicated.

In addition, even when this positioning adjustment is completed, the pitching machine body is rotated by an electric motor via a gear system, so the inertia of the pitching machine body and the electric motor will cause the pitching machine body to stop. Errors are likely to occur in the position, and the pitching direction may not be constant at each position.

(Purpose of the invention) This invention was made with attention to the above-mentioned circumstances, and it is designed to facilitate the adjustment of the left and right positioning of the pitching direction, and to maintain the pitching direction constant at each position on the left and right after this adjustment. The purpose is to

(Structure of the device) The feature of this device for achieving the above object is that the first rail extending radially outward from the center of rotation of the pitching machine body is located on the side of the pitching machine body. a second rail substantially parallel to the first rail is provided on the fixed side of the support base;
A slider is provided on one of these rails and is capable of sliding freely along this rail,
A solenoid is provided on the other rail and can be slid along the rail and fixed at any sliding position, and the actuating part of this solenoid is connected to the slider, and its operation rotates the pitching machine body. in that it is configured to do so.

(effect) This idea will be explained below with reference to the drawings.

A pitching machine 1 for batting practice includes a support base 2 and a pitching machine main body 3 that is installed on the support base 2 and performs pitching operations.
and a ball supply section 4 that supplies balls to the main body section 3.

To explain the support stand 2, 6 is a fixed stand, and a movable stand 7 is pivoted on this fixed stand 6 so as to be vertically movable. An electric screw jack device 8 is provided between the fixed base 6 and the movable base 7, and the movable base 7 can be rotated up and down and held at a desired position by this device. and,
By rotating the movable base 7, the pitching direction can be changed up or down.

Further, a cylindrical vertical frame 9 is provided on the movable table 7. This vertical frame 9 is divided into upper and lower parts, the lower part of which is a fixed frame 11 fixed to the movable base 7, and the upper part of which is rotatably attached to the fixed frame 11 around the axis of the fixed frame 11. A pivoting frame 12 is supported.
The pitching machine main body 3 and the ball supply section 4 are attached to the rotating frame 12, and by rotating the rotating frame 12, the pitching direction can be changed to the left or right toward the pitching target.

The pitching machine main body 3 includes the rotating frame 12
It has a pair of left and right electric motors 16, 16 supported via a bracket 15, and rotating bodies 17, 17 attached to each electric motor 16. and,
These pair of rotating bodies 17, 17 are supposed to rotate in mutually opposite directions. Furthermore, it is possible to make the rotation speeds of the rotating bodies 17, 17 relatively different so that a shot or a curved pitch can be made.

Reference numeral 18 denotes a soft ball, and the ball 18 is made of a hollow elastic material such as rubber. The ball is accelerated and thrown.
The ball supply section 4 includes a guide member 21 in an inclined position framed by a wire rod, and a ball 1 between the two rotating bodies 17, 17.
8 one by one.

The other 20 are electrical control panels.

Reference numeral 23 denotes a pitching direction switching device that alternately switches the pitching direction of the pitching machine main body 3 to the left or right at a slight angle toward the pitching target. This device 23 will be explained below.

A rotation bar 24, which is a first rail and extends radially outward from the rotation center side of the pitching machine main body 3, is provided in a protruding manner on the rotation frame 12. On the other hand, a fixed bar 25, which is a second rail and is substantially parallel to the rotating bar 24, is provided to protrude from the fixed frame 11.

A cylindrical member 26 serving as a slider is fitted into the rotary bar 24 and is slidable along the rotary bar 24 . On the other hand, the fixed bar 25 has a pair of left and right solenoids 27, 27' that can be slid along the fixed bar 25 and fixed at any sliding position.
is provided. That is, the fixed bar 25 is slidably provided with a sliding base 28 that supports the solenoids 27 and 27', and this sliding base 28 can be moved to any sliding position by the elongated hole 29 and the fastener 30. Fixed bar 25
It is said that it can be fixed freely.

Each operating portion 27a of the solenoid 27, 27',
27a' is a pivot pin 32, 32 attached to the fixed bar 24.
connected via. And this solenoid 2
7, 27' causes the pitching machine main body 3 to rotate to the left or right. To explain this in more detail, as shown by the solid line in FIG.
8, in order to make the ball 18 reach the pitching target, one solenoid 27 is activated to rotate the pitching machine main body 3 and change the pitching direction to the left at a slight angle toward the pitching target. It is supposed to change to On the other hand, when the pitching machine body 3 throws a curved ball 18 as shown by the two-dot chain line in FIG. 1, the other solenoid 27 ′
is actuated to rotate the pitching machine main body 3 and change it to the right at a slight angle toward the pitching target.

Further, this pitching machine 1 is configured such that both rotating bodies 17, 17 automatically pitch a shot and a curved pitch alternately, and accordingly, the pitching direction is automatically switched to the left and right.

In the above configuration, positioning adjustment in the pitching direction when the solenoids 27, 27' are activated is performed as follows.

In FIG. 4, the cylindrical member 26 and the solenoid 2
7, 27' position with rotating bar 24 and fixed bar 25
When the actuating portion 2 of each solenoid 27, 27' is moved from the solid line position to the two-dot chain line position along
Since the operating stroke of solenoid 7a, 27a' is constant (for example, about 10 mm), solenoid 27, 27'
When activated, the changing angle of the pitching direction, that is, the rotation angle of the pitching machine main body 3 changes from a large angle α to a small angle β. In this case, since the amount of movement of the cylindrical member 26 and the solenoids 27, 27' is relatively large relative to the amount of change in the rotation angle of the pitching machine main body 3, the cylindrical member 26, the solenoid 27, 27'
The rotation angle can be finely adjusted by a relatively large amount of movement of 27'.

Although the above is based on the illustrated example, the cylindrical member 26 may be provided on the fixed bar 25, and the solenoids 27, 27' may be provided on the rotating bar 24. Alternatively, a single solenoid may be used, and the pitching machine main body may be configured to spring return when the solenoid is not in operation.

(Effect of the invention) According to this invention, the positioning adjustment in the pitching direction is an adjustment along the rail of the cylinder member and the solenoid, so this adjustment is achieved by a relatively larger amount of movement than the adjustment of the angle itself. Facilitated. In addition, the rotation of the pitching machine body can be turned on or off.
The stroke of the solenoid is constant, and after adjusting the position of the cylindrical member and the solenoid, this Positioning is not affected by the inertial force of the pitching machine body when it rotates. Therefore, the pitching direction at each position on the left and right sides is kept constant.

[Brief explanation of the drawing]

Figure 1 is a plan view of the pitching machine, Figure 2 is a view taken from the - line in Figure 1, Figure 3 is a view taken from the - line in Figure 2, and Figure 4 is a view taken from the - line in Figure 2. It is a diagram. DESCRIPTION OF SYMBOLS 1...Throwing machine, 2...Support stand, 3...Throwing machine main body, 23...Pitching direction switching device, 24...Rotating bar (first rail), 25...Fixed bar (second rail) , 26... Cylindrical member (slider), 27, 27'
...Solenoid, 27a, 27a'...actuating part.

Claims (1)

[Scope of utility model registration request] In a pitching machine in which a pitching machine body that throws a ball is rotatably supported on a fixed side of a support base so as to change the pitching direction, radially outward from the rotation center side of the pitching machine body. A first rail extending toward the pitcher is provided on the throwing machine main body side, and a second rail substantially parallel to the first rail is provided on the fixed side of the support base. A slider is provided that is slidable along this rail, and a slider is provided on the other rail that is slidable along this rail and can be fixed at any sliding position. A pair of solenoids are provided on the moving base with the slider in between, and an operating section that slides inside the solenoid is connected to the slider, and the operation of the solenoid rotates the pitching machine body. A pitching direction adjustment device for a pitching machine for batting practice.