KR102022491B1 - Tennis ball launcher - Google Patents

Abstract

The present invention relates to a soft tennis ball shooting machine, which provides the ball shooting machine for shooting a ball, the ball shooting machine comprising: a main body which has a compressed air filled therein and includes a barrel formed at an end thereof, wherein a ball is guided and shot through the barrel; a first cylinder which has a piston movably disposed therein and is disposed inside the main body; a second cylinder which is disposed inside the main body separately from the first cylinder and has a supply hole formed in a circumferential surface thereof, wherein compressed air of the main body is supplied into the second cylinder through the supply hole; and a ball piston which is disposed inside the second cylinder and connected to the piston of the first cylinder, wherein, when the ball piston is withdrawn from the second cylinder, compressed air is supplied through the supply hole of the second cylinder thereinto, so that the ball piston shoots the ball. The present invention has an effect of shooting the ball exactly in a desired direction.

Description

Ball launcher {Tennis ball launcher}

The present invention relates to a ball launching device, and more particularly, to a ball launching device that can accurately shoot the ball in the desired direction using the compressed air.

Generally, a tennis game is a game using a tennis ball made of soft rubber with a thin rubber itself, rather than a state of felt on the rubber like a tennis ball.

In terms of the game, tennis games are played in a one-set match (5 games, 7 games), unlike tennis, and the game ends with 3 or 4 games, and double (male, female), singles, doubles, etc. Players can also be distinguished by vanguard and rear.

In particular, tennis games use the technique of forehand stroke and backhand stroke with only one side of the racket.

Thus, tennis game is not widespread than tennis, so if there is no opponent, it has a disadvantage that it is difficult to practice alone.

In the prior art for solving such a problem, as disclosed in Korean Utility Model Publication No. 20-1980-0001215 (hereinafter referred to as 'prior art document 1'), by throwing the tennis ball continuously by mechanical operation without the opponent Techniques such as tennis ball throwers have been proposed that allow you to play or practice tennis alone, regardless of time.

In addition, as disclosed in Korean Utility Model Publication No. 20-1984-0000341 (hereinafter referred to as 'prior art document 2'), when the ball is injected into the injection tube one by one with a batting blow, the practicer hits the ball with a racket alone. Some techniques, such as tennis exercisers, have been proposed.

In addition, as disclosed in Korean Unexamined Patent Publication No. 10-1985-0008283 (hereinafter referred to as 'prior art document 3'), a hitting exerciser for throwing the ball supplied to the air receiving unit through the annular guide by the throwing arm; The same technique has been proposed.

However, prior art documents 1 to 3 are throwing a tennis ball or a ball by a mechanical structure, the structure of the technical configuration is complicated, as well as the throwing of the ball in the desired direction when throwing the ball in particular due to the characteristics of the tennis ball properly There is a problem that is not made.

That is, due to the characteristics of the tennis ball made of thin rubber itself, it is not thrown properly when the tennis ball is not in place in the process of supplying the ball. When throwing, the position where the tennis ball is thrown is greatly changed according to the swing force or the strength of the hitting, so there are many difficulties in accurately throwing the tennis ball to the desired position.

Moreover, as a high torque is required to increase the swing force or the hitting force, manufacturing also has a difficult disadvantage.

Domestic Utility Model Publication No. 20-1980-0001215 Domestic Utility Model Publication No. 20-1984-0000341 Korean Unexamined Patent Publication No. 10-1985-0008283

Accordingly, an object of the present invention is to provide a ball launching device capable of accurately launching a ball including a soft tennis ball made of thin rubber using a compressed structure in a desired direction.

In addition, another object of the present invention is to provide a ball launching device that is capable of firing the ball at various angles and directions by rotating the launch device up and down as well as to the left and right.

According to an aspect of the present invention, there is provided a ball launching device, comprising: a main body having a barrel filled with compressed air therein and a ball guided at an end thereof; A first cylinder provided inside the body and having a piston movable therein; A second cylinder provided inside the main body to be isolated from the first cylinder and having a supply port through which the compressed air inside the main body is supplied; And a ball piston provided inside the second cylinder and connected to the piston of the first cylinder and supplying compressed air through a supply port of the second cylinder to the inside when it is withdrawn from the second cylinder.

In addition, a circumferential surface of the ball piston may be provided with a supply port communicating with the supply port of the second cylinder when the ball piston is withdrawn from the second cylinder.

In addition, the first cylinder has a supply passage and an exhaust passage through which air can flow in the thickness layer, respectively, and the supply passage is provided to communicate with the inside of the first cylinder, and the exhaust passage is provided to communicate with the inside of the second cylinder. And a diaphragm between the first cylinder and the second cylinder, the diaphragm having a first communication path for communicating the first cylinder and the supply path into the first cylinder, and an exhaust path of the first cylinder for the second cylinder. The second communication path communicating with the inside of the can be formed.

In addition, a ball housing may be provided between the body and the barrel to supply the balls one by one to the front of the ball piston. When the ball piston is withdrawn from the second cylinder, the ball is moved into the barrel, and the inner diameter of the barrel is the outer diameter of the ball. It can be formed in the same or smaller diameter, the ball housing is provided with a ball supply chute to supply the ball, the ball supply chute is provided with a sensing sensor for detecting the presence or absence of the ball provided to operate the lighting means Can be.

On the other hand, the launch device as described above is provided in the mounting frame is installed in the holding frame to be rotated up and down and left and right, the mounting frame to protect the launching device to surround the mounting frame, while the protection of the barrel of the launch device is installed to penetrate outward The panel is provided, the upper portion of the mounting frame is provided with a hopper for supplying the ball into the ball supply chute of the launch device, the lower portion of the support frame may be provided with a caster for securing the mobility of the launch device.

In addition, the protection panel of the mounting frame may be provided with an emergency switch for stopping the operation of the launch device.

In addition, the mounting frame is provided with a rotating means for rotating the launch device to the left and right, the rotating means is provided on the support frame for supporting the mounting frame; A ring gear fixed to the circumferential surface of the support shaft; A first motor fixed to the mounting frame; A drive gear rotatably provided in the mounting frame in engagement with the ring gear of the support shaft and rotated by the first motor, wherein the drive gear is rotated along the ring gear to rotate the mounting frame left and right on the holding frame. It may be provided to.

In addition, the ring gear of the support shaft is provided with a protruding switching bar, and the mounting frames on both sides of the switching bar are provided with first limit sensors that are in contact with the switching bar during rotation, thereby adjusting the left and right rotation angles of the launch device.

In addition, the mounting frame is provided with an angle means for rotating the firing device up and down, the angle means is provided with a hinge shaft fixed to the launching device to be rotatably coupled to the mounting frame to the mounting frame, fixed to the launching device Fixed gear; A second motor fixed to the mounting frame; A drive gear rotatably provided on the mounting frame in engagement with the fixed gear of the launch device, and rotated by a second motor, such that the launch device rotates up and down via the hinge axis as the drive gear is rotated. It may be provided.

In addition, the hinge shaft is provided with a protruding switching bar, and the mounting frames on both sides of the switching bar are provided with second limit sensors which are in contact with the switching bar when the hinge shaft rotates like the launch device, respectively. As such, the vertical rotation angle of the launch device can be adjusted while idling.

In addition, the mounting frame is provided with a supply means for supplying balls into the launch device one by one, the supply means is a ring-shaped rotary gear rotatably provided between the hopper and the launch device; A ring-shaped fixing plate coupled to the rotary gear and forming a bottom surface of the hopper; A plurality of guide pins provided on a fixed plate; A third motor fixed to the mounting frame; A drive gear rotatably provided in the mounting frame in engagement with the rotary gear, and rotated by a third motor, including a guide plate on the fixed plate as the rotary gear is rotated in the hopper as the rotary gear is rotated. And guided into the center of the rotary gear can be provided to supply to the launch device.

In addition, the plurality of guide pins may be provided to have a curvature gradually entered from the outside of the fixing plate to the inside, while the height of the guide pin gradually increases from the outside of the fixing plate to the inside.

According to the ball firing apparatus of the present invention, a ball including a soft tennis ball made of thin rubber with a simple structure by sequentially firing the ball supplied to the ball housing by using the compressed air acting by a piston moved in the main body The effect is that you can shoot exactly in the desired direction.

In addition, according to the present invention, by firing the ball in the state of rotating the left and right as well as the vertical angle of the launching device has the effect of maximizing the game performance due to the high amount of practice by the ball fired in various angles and directions.

1 is a perspective view showing the configuration of a ball launch apparatus according to the present invention.
2 is an exploded perspective view of the launch device according to the present invention.
3 is a combined cross-sectional view of the launch device according to the present invention.
Figure 4 is an operation of the launch device according to the invention, Figure 4a is a cross-sectional view of the pre-launch of the tennis ball, Figure 4b is a cross-sectional view of the post-launch state of the tennis ball.
5 is an external view of a case provided with a launch device according to the present invention.
Figure 6 is a block diagram of a mounting frame and a strut frame equipped with a firing apparatus according to the present invention.
7 is a bottom perspective view of FIG. 6.
8 is a partially cutaway perspective view showing a ball supply means for supplying a ball to the launch device according to the present invention.
9a and 9b is an operation of the state in which the launch device according to the present invention is adjusted up and down and left and right.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 9 are diagrams illustrating an exemplary view in which the ball and ball launch device according to the present invention is applied.

Prior to describing the present invention, the ball launching device of the present invention is a launching device for launching a ball used in a game, and the present invention is described as an example of a tennis ball as a preferred embodiment, but the present launching device is only a tennis ball. Note that it is not limited or limited.

Ball launching device according to the present invention, as shown in the figure, is composed of a firing device 100 for directly firing the tennis ball 200, and a mounting frame 400, the launch device 100 is rotatably provided do.

Such a launch device 100 may be provided alone or used, or may be used in a state in which the mounting frame 400 is installed.

On the other hand, as shown in Figures 1 to 3, the launch device 100 is provided with a compressed air supplied therein, the main body 110 and the tip of the main body 110 is provided with a tennis ball 200 is guided And a barrel 190 to be fired, a first cylinder 130 provided inside the main body 110 and having a piston 160 linearly movable therein, and a main body separated from the first cylinder 130. 110 is provided inside the second cylinder 150, the supply port 151 for supplying compressed air inside the main body 110 is formed at one end of the circumferential surface, and the linear movement inside the second cylinder 150 It is possible to be connected to the piston 160 of the first cylinder 130 and the compressed air through the supply port 151 of the second cylinder 150 to the inside when withdrawn from the second cylinder 150 is supplied And a ball piston 170 for firing the ball 200.

The body 110 is formed as a hollow tube, as shown in Figures 2 and 3, the front end is provided with a ball housing 180 is coupled, the rear end is provided with a closing panel 120 is coupled. In particular, the closing panel 120 and the ball housing 180 is provided is connected to the plurality of support bars 125, the front end of the support bar 125 is inserted into the ball housing 180 is fastened and fixed as a nut, support The rear end of the bar 125 is fastened and fixed as a nut through the finishing panel 120, and the body 110 is provided between the finishing panel 120 and the ball housing 180. In the main body 110 provided as described above, compressed air is supplied through the supply port 124 of the finishing panel 120 to be described below.

The finishing panel 120 includes a forward port 121 and a reverse port 122 for moving the piston 160 in the first cylinder 130 forward and backward and the ball piston 170 in the second cylinder 150. ) Is provided with an exhaust port 123 through which outside air is introduced or internal air (pressure) is exhausted, and a supply port 124 for filling compressed air into the main body 110.

In addition, a diaphragm 140 is provided between the first cylinder 130 and the second cylinder 150 provided in the main body 110 to isolate the first cylinder 130 and the second cylinder 150. .

Particularly, the first cylinder 130 is a hollow tube, and both ends thereof are provided to be closed by the closing panel 120 and the diaphragm 140, respectively, and the inside of the first cylinder 130 is a forward port of the closing panel 120. It is provided in communication with 121.

In addition, a supply path 131 and an exhaust path 132 through which air can flow are formed in the thickness layer between the outer surface and the inner surface of the first cylinder 130, respectively.

The supply path 131 of the first cylinder 130 has a rear end thereof connected to the reverse port 122 of the closing panel 120 and the front end of the supply path 131 is formed through the first communication path 141 of the diaphragm 140 to be described later. It is provided in communication with the interior of the first cylinder 130, the exhaust passage 132 of the first cylinder 130, the rear end thereof is connected to the exhaust port 123 of the finishing panel 120 and the front end is a diaphragm 140 to be described later It is provided to communicate with the inside of the second cylinder 150 through the second communication path 142 of the.

In addition, the piston 160 is provided to be linearly movable in the first cylinder 130.

Therefore, when air flows into the forward port 121 of the finishing panel 120, the piston 160 inside the first cylinder 130 moves forward and the pressure (air) that is filled between the piston 160 and the diaphragm 140 is changed. ) Is discharged to the outside through the supply passage 131 of the first cylinder 130 and the reverse port 122 of the closing panel 120, and when air is introduced into the reverse port 122 of the closing panel 120 Air flows into the first cylinder 130 between the diaphragm 140 and the piston 160 through the supply passage 131 of the first cylinder 130 and closes the piston 160 while moving the piston 160 backward. Pressure (air), which was filled between the panels 120, is discharged to the outside through the forward port 121 of the finishing panel 120.

"자 유로의 제 2 연통로(142)가 각각 형성된다.In addition, the diaphragm 140 includes a first communication path 141 of a "c" -shaped flow path which communicates the supply path 131 of the first cylinder 130 with the inside of the first cylinder 130, and the first cylinder 130. To communicate with the interior of the second cylinder 150, "

"The second communication paths 142 of the magnetic flow paths are formed, respectively.

Meanwhile, the second cylinder 150 is a hollow tube provided in the main body 110 between the diaphragm 140 and the ball housing 180, and both ends thereof are hermetically sealed by the diaphragm 140 and the ball housing 180, respectively. At the distal end of the second cylinder 150, a plurality of supply holes 151 are provided in the circumferential direction, and a plurality of supply holes 151 to which compressed air in the main body 110 is supplied. O-rings 152 for airtightness are respectively inserted into the inner circumference.

In addition, the inside of the second cylinder 150 is provided with a ball piston 170 is inserted into the linear movement, the ball piston 170, the rear end portion in contact with the diaphragm 140 is closed and the front end is an opening opening 172 is provided.

The ball piston 170 is connected to the piston 160 in the first cylinder 130 and provided as a connection link 161, the connection link 161 is provided through the diaphragm 140, the connection link 161 The inner circumferential surface of the diaphragm 140 penetrates) may be provided with a separate O-ring for airtightness.

In addition, a plurality of supply holes 171 through which the compressed air inside the main body 110 is supplied are formed along the circumferential direction at the rear end of the circumferential surface of the ball piston 170, and the opening 172 at the tip of the ball piston 170. Is provided with a ring-shaped packing member 173 is in contact with the tennis ball 200 supplied through the ball housing 180 is coupled.

The packing member 173 is formed of a rubber material to move the tennis ball 200 into the barrel 190 while minimizing contact noise with the tennis ball 200, and the ball piston in the second cylinder 150. At the time of withdrawal of the 170, the packing member 173 contacts the insertion protrusion 191b formed at the connection member 191 of the barrel 190, and the movement of the ball piston 170 is stopped.

At this time, when the ball piston 170 is drawn out of the second cylinder 150 and stopped, the supply port 171 of the ball piston 170 is provided in communication with the supply port 151 of the second cylinder 150, The compressed air inside the 110 is supplied into the ball piston 170, and the compressed air supplied in this way is discharged to the front barrel 190 through the opening 172 of the ball piston 170.

On the other hand, between the main body 110 and the barrel 190 is provided with a ball housing 180 for supplying the tennis ball 200 in front of the ball piston 170 one by one, the upper part of the ball housing 180 tennis ball 200 ) Is provided with a ball supply chute 181 for supplying into the ball housing 180.

The ball supply chute 181 is formed in a form in which the upper portion is expanded to the outside, it is possible to easily receive the tennis ball 200 discharged from the hopper 470 to be described later can be supplied to the ball housing 180. Therefore, even when the firing apparatus 100 of the present invention is rotated up and down to adjust the angle θ1, the tennis ball 200 can be smoothly received and supplied through the enlarged inlet of the ball supply chute 181.

As described above, the ball housing 180 which receives the tennis ball 200 from the ball supply chute 181 has an inner diameter equal to or slightly larger than the outer diameter of the tennis ball 200, and thus, the ball housing 180 is provided with a tennis ball inside the ball housing 180. Only 200 is supplied one by one. In this way, the tennis ball 200 is supplied to the ball supply chute 181 in the hopper 470, the ball supply chute 181 is supplied to the ball housing 180 in order to fall freely.

And, the ball supply chute 181 is provided with a detection sensor 182 for detecting the presence or absence of the tennis ball 200, if there is no tennis ball 200 is provided to turn on the lighting means of the signal LED (not shown) do.

As shown in FIG. 6, the detection sensor 182 includes a light emitter and a light receiver as a photosensor, and light is radiated from the light emitter, and the light is received by the light emitter. Therefore, it is determined whether there is a tennis ball 200 supplied to the ball supply chute 181 according to whether the light is received from the receiver.

Meanwhile, the tennis ball 200 supplied into the ball housing 180 as described above is provided by being moved into the barrel 190 by the ball piston 170, and the inner diameter of the barrel 190 is defined by the tennis ball 200. It is formed with a diameter equal to or smaller than the outer diameter. This is because the tennis ball 200 located inside the barrel 190 is fired by compressed air, so when the inner diameter of the barrel 190 is larger than the outer diameter of the tennis ball 200, compressed air for firing may leak. Since the smooth firing is not made, the inner diameter of the barrel 190 is formed to have the same or smaller diameter than the outer diameter of the tennis ball 200 so that the tennis ball 200 is provided in line contact or surface contact with the inner surface of the barrel 190. Is preferred.

Such a barrel 190 is provided in communication with the front end portion of the ball housing 180 via the connection member 191.

The connection member 191 is bolted and coupled to the front portion of the ball housing 180 in a ring shape, the engaging portion 191a coupled to the barrel 190 is protrudingly formed on the front portion, the ball housing 180 on the rear portion Insertion protrusion 191b inserted into the protrusion is formed.

The rear end of the barrel 190 is inserted into the coupling protrusion 191a of the connection member 191. In this case, the rear end of the barrel 190 is formed as a stepped coupling portion 190a, and the coupling protrusion ( It is provided to be caught on the inner circumferential surface of the coupling protrusion 191a in a state inserted into the interior of the 191a.

Operation of the launch device 100 as described above is made as shown in Figures 4a and 4b.

That is, as shown in FIG. 4A, the piston 160 and the ball piston 170 are moved to the rear ends of the first and second cylinders 130 and 150, respectively, in the pre-launch state of the tennis ball 200.

When air is supplied to the forward port 121 of the closing panel 120 in this state, the piston 160 is moved forward from the rear end of the first cylinder 130 to the front end side, the piston 160 and the connecting link 161 Ball piston (170) connected to the also moves forward to the front end side from the rear end of the second cylinder (150).

At this time, the air in the first cylinder 130 between the piston 160 and the diaphragm 140 is supplied to the first communication passage 141 of the diaphragm 140 and the supply passage 131 of the first cylinder 130 and the closing panel. The piston 160 may smoothly move forward by being discharged to the outside through the reverse port 122 of the 120, and the external air may be exhausted from the finish panel 120 by the forward movement of the ball piston 170. ) Is supplied into the second cylinder 150 through the exhaust passage 132 of the first cylinder 130 and the second communication passage 142 of the diaphragm 140 to prevent vacuum of the second cylinder 150. The ball piston 170 is able to move forward smoothly.

Therefore, the tennis ball 200 supplied to the front of the ball piston 170 through the ball housing 180 by the ball piston 170 moving forward as described above is moved to the inner rear end of the barrel 190.

Thereafter, when the ball piston 170 is withdrawn from the second cylinder 150 as shown in FIG. 4B, the supply port 171 of the ball piston 170 communicates with the supply port 151 of the second cylinder 150. The compressed air inside the main body 110 is supplied into the ball piston 170, and the compressed air supplied in this way is quickly discharged forward through the opening 172 at the tip of the ball piston 170, and thus inside the barrel 190. The tennis ball 200 will be fired.

Thus, by firing the tennis ball 200 with soft characteristics made of thin rubber with compressed air, it is possible to achieve stable and accurate shooting in a constant direction at all times, and thus more accurate practice when playing or practicing tennis alone. Of course, you can enjoy playing tennis.

On the other hand, after the firing of the tennis ball 200 as described above, if the air is supplied to the reverse port 122 of the finishing panel 120, the supplied air is supplied to the supply path 131 and the diaphragm (130) of the first cylinder 130 It acts on the front surface of the piston 160 through the first communication path 141 of 140 to move the piston 160 backward in the first cylinder 130, as described above by the piston 160 is moved backward The ball piston 170 also moves backward in the second cylinder 150.

In this process, since the air in the first cylinder 130 between the piston 160 and the closing panel 120 is discharged to the outside through the forward port 121, the backward movement of the piston 160 is made smoothly, the ball piston Air in the second cylinder 150 between the 170 and the diaphragm 140 is discharged from the second communication path 142 of the diaphragm 140 and the exhaust passage 132 of the first cylinder 130 and the finishing panel 120. By being discharged to the outside through the exhaust port 123 of the backward movement of the ball piston 170 is made smoothly.

In addition, when the ball piston 170 moves backward, the supply port 171 of the ball piston 170 and the supply port 151 of the second cylinder 150 are blocked from each other to block the supply of compressed air, and the ball piston When the 170 is completely inserted into the second cylinder 150, the tennis ball 200 which is in contact with the outer surface of the ball piston 170 in the ball housing 180 is inside the ball housing 180 as shown in FIG. 4A. It is supplied as a free fall down.

Then, the inside of the main body 110 is supplied with a new compressed air is charged as much as the amount of the compressed air used for the launch of the tennis ball 200 is prepared to the state ready to launch the tennis ball 200.

On the other hand, the launch device 100 as described above is provided in a separate mounting frame 400 having a moving means can adjust the launch device 100 in a predetermined angle or direction.

That is, the mounting frame 400 having the launch device 100 is formed in a hexahedral shape by connecting a plurality of frames in the vertical and horizontal directions.

The holding frame 300 supporting the mounting frame 400 is connected to the lower portion of the mounting frame 400, and the handle 310 and the plurality of casters 320 are provided at one side and the lower end of the holding frame 300. Are respectively provided.

Some of the casters 320 may be provided in a rotatable type that can be freely rotated to change the direction, the rest may be provided in a fixed type that can only move linearly.

And, the outer side of the mounting frame 400 is provided with a protective panel 410 surrounding the mounting frame 400 as shown in Figure 5 to protect the launch device 100, the barrel 190 of the launch device 100 The protection panel 410 is provided to protrude outward. At this time, the opening of the protection panel 410 through which the barrel 190 of the launch device 100 passes is formed in consideration of the rotation width of the top and bottom and left and right of the launch device 100 sufficiently.

In addition, one side of the protective panel 410 as described above is further provided with an emergency switch 420 which is a safety device for forcibly terminating the operation of the launch device 100 to stop. The emergency switch 420 may be connected to a controller (not shown) or a power supply (not shown) of the launch device 100 so as to forcibly cut off power.

In addition, the upper end of the mounting frame 400 is provided with a hopper 470 for supplying the tennis ball 200 to the ball supply chute 181 of the launch device 100, as shown in Figure 6, the hopper 470 There are many tennis balls 200 are inserted therein, the mounting frame 400 of the lower hopper 470 is provided with a launch device 100 to rotate up and down and left and right.

The mounting frame 400 has a left and right rotation means for rotating the launch device 100 to the left and right, an up and down angle means for rotating the launch device 100 up and down, and the tennis ball 200 in the hopper 470 Supply means for supplying one by one to the ball supply chute 181 of 100 is configured.

First, the rotating means configured to the mounting frame 400 to rotate the launch device 100 to the left and right, as shown in Figure 7, is provided to protrude on the upper surface of the support frame 300 to support the mounting frame 400 A support shaft 430, a ring gear 431 provided to be fixed to the upper end of the circumferential surface of the support shaft 430, a first motor 440 to be fixed to the mounting frame 400, and a support shaft ( The drive gear 441 includes a drive gear 441 rotatably provided in the mounting frame 400 in a state engaged with the ring gear 431 of the 430 and rotated by the first motor 440. It is provided to rotate the mounting frame 400 from side to side on the support shaft 430 while rolling from the ring gear 431 in a state engaged with the circumferential surface of the gear 431.

Here, the first mounting panel 411 is fixed to the lower surface of the mounting frame 400 supported by the support shaft 430, the upper surface of the support shaft 430 on the lower surface of the first mounting panel 411 It is provided to be fixedly connected.

In addition, the first motor 440 is a motor capable of forward and reverse rotation, and the driving gear 441 by the first motor 440 rotates forward and reverse in a state of being engaged with the ring gear 431, and thus the mounting frame ( 400) will be rotated to the left and right.

In addition, the ring gear 431 may be provided to be fixed to the circumferential surface of the support shaft 430, but when forming the support shaft 430, it is preferable to form the ring gear 431 integrally formed on the circumferential surface thereof. Do.

On the other hand, the mounting frame 400 rotated on the support shaft 430 as described above can be adjusted by limiting its left and right rotation angle (θ2) up to 15 degrees, respectively, the switching gear 432 protrudes on the ring gear 431 The lower surface of the first mounting panel 411 on both sides of the switching bar 432 is provided with a plurality of first limit sensors 460 contacting the switching bar 432 when the mounting frame 400 rotates. When the switching bar 432 is detected by the first limit sensor 460, since the operation of the first motor 440 is stopped, the left and right rotations of the mounting frame 400, that is, the launch device 100 are limited.

Accordingly, since the angle formed by both first limit sensors 460 becomes the left and right rotation angle θ2 of the mounting frame 400, that is, the launch device 100, the launch device may be adjusted by adjusting the distance between the first limit sensors 460. The left and right rotation angles θ2 of 100 may be adjusted.

In addition, the inner lower portion of the mounting frame 400, as shown in Figure 7 the compressed air that is filled in the main body 110, that is, the regulator 450 for adjusting the pressure, and the forward port 121 and the reverse of the launch device 100 Solenoid valves 451 for selectively supplying air, that is, air, to the port 122 are provided.

On the other hand, the angle means for rotating the firing apparatus 100 up and down is configured in the mounting frame 400, as shown in Figures 7 and 8, is provided to be fixed to the firing apparatus 100 is to launch the firing apparatus 100 A hinge shaft 183 rotatably coupled to the mounting frame 400, a half moon-shaped fixed gear, that is, a half moon gear (hereinafter referred to as a “half moon gear”) 186 fixedly provided to the launching device 100, and The second motor 480 is fixedly mounted to the mounting frame 400 and the second motor 480 is rotatably provided to the mounting frame 400 in a state of being engaged with the half-gear gear 186 of the launch device 100. Including a drive gear 481 rotated by the), as the drive gear 481 is rotated is provided so that the launch device 100 by the half moon gear 186 is rotated up and down via the hinge shaft (183). do.

A second mounting panel 412 is fixed to the mounting frame 400 on the top of the launch device 100, and hinge panels 414 are vertically protruded from both ends of the second mounting panel 412. .

As shown in FIGS. 1 and 2, a plurality of fixing panels 185 fixed to both sides of the upper surface of the ball housing 180 of the launch device 100 are provided between the hinge panels 414 provided as described above. The panel 185 and each hinge panel 414 are rotatably coupled to each other via a hinge shaft 183.

The fixed panel 185 of the launch device 100 is provided to be spaced apart from the ball supply chute 181 can eliminate the interference between the hinge shaft 183 and the ball supply chute 181, both fixed panels 185 One side of the half moon gear 186 is provided to be fixed.

In addition, the second motor 480 is a motor capable of forward and reverse rotation, and the driving gear 481 of the second motor 480 rotates forward and reverse in a state of being engaged with the vandal gear 186. It will rotate 100) up and down.

In addition, in the vertical angle means of the launch device 100 as described above, the angle of rotation can be adjusted by limiting the vertical rotation angle θ1 of the launch device 100 to a maximum of 50 degrees, but the hinge bar 183 has a switching bar 184. Is provided to protrude, and the second limit sensor 461 is in contact with the switching bar 184 when the hinge shaft 183 rotated together with the launching device 100 in the hinge panel 414 on both sides of the switching bar 184. Are respectively provided, and when the switching bar 184 rotated by the second limit sensor 461 is detected, the operation of the second motor 480 is stopped, thereby limiting the vertical rotation of the launch device 100.

Accordingly, since the angle formed by the second limit sensors 461 becomes the vertical rotation angle θ1 of the launch device 100, the vertical rotation angle of the launch device 100 is adjusted by adjusting the distance between the second limit sensors 461. (θ1) can be adjusted.

In addition, at the time of vertical rotation of the launch device 100, the fixed panel 185 of the launch device 100 is coupled to the hinge panel 414 via the hinge axis 183, and is centered on the hinge axis 183. In this case, an arc-shaped guide groove 414a is formed on one surface of the fixed panel 185 facing the hinge panel 414, and the guide pin 414b is penetrated and coupled to the hinge panel 414. An end of the pin 414b is inserted into and constrained in the guide groove 414a of the fixing panel 185.

Therefore, both fixing panels 185 may be maintained at a constant distance from both hinge panels 414 by the guide pins 414b and the guide grooves 414a, which are coupled as described above, so that the up and down rotation of the firing apparatus 100 is performed. Not only is this smoothly done, it is possible to limit the maximum angle of the launch device 100.

On the other hand, even if the launch device 100 is rotated up to 50 degrees at the bottom of the hopper 470 as described above, the discharge port of the hopper 470 is always supplied due to the shape of the upper end of the ball supply chute 181 is expanded to the outside Since it exists in the chute 181, the tennis ball 200 in the hopper 470 is smoothly supplied to the ball supply chute 181 irrespective of the vertical rotation of the firing apparatus 100.

Then, the supply means for supplying the tennis ball 200 to the ball supply chute 181 of the launch device 100 in the mounting frame 400 is configured in the hopper 470, as shown in Figure 8, the hopper A ring-shaped rotary gear 490 rotatably provided between the 470 and the launch device 100, and a ring-shaped fixing plate 491 that is fixedly coupled to the rotary gear 490 and forms the bottom surface of the hopper 470. ), A plurality of guide pins 492 provided in a standing state on the fixing plate 491, a third motor 493 provided to be fixed to the mounting frame 400, and in a state of being engaged with the rotary gear 490. Including a drive gear 494 rotatably provided in the mounting frame 400 and rotated by the third motor 493, the guide pins 492 on the fixing plate 491 are rotated as the rotary gear 490 is rotated. Rotation in the hopper 470 guides one tennis ball 200 to the center of the fixed plate 491 and the rotary gear 490 to launch the device (1) 00 is supplied to the ball supply chute 181.

The hopper 470 is opened so that its bottom surface communicates with the ball supply chute 181 of the launcher 100, and the third mounting panel 413 is fixed to the mounting frame 400 under the hopper 470. The through hole may be formed at a central portion of the third mounting panel 413 so that the fixing plate 491 fixed to the upper surface of the rotary gear can be inserted therein.

On the other hand, the rotary gear 490 is rotatably provided on the upper surface of the second mounting panel 412 provided in the lower portion of the third mounting panel 413, the fixed plate 491 is fixed to the upper surface of the rotary gear 490 is It is inserted into the hopper 470 through the third mounting panel 413 is provided to form the bottom surface of the hopper 470.

In addition, the plurality of guide pins 492 provided on the upper surface of the fixing plate 491 are provided to have a curvature gradually entered from the outside of the fixing plate 491 to the inside, and the guide pins toward the inside from the outside of the fixing plate 491 ( The height of 492 is provided so as to increase gradually.

As a result, when the fixing plate 491 is rotated, a plurality of guide pins 492 having different sizes may mix the tennis balls 200 in the hopper 470 up and down, and one of the tennis balls 200 mixed in this process may be A plurality of guide pins 492 having a curvature entering from the outside of the fixing plate 491 may be guided and inserted into the center of the fixing plate 491.

Therefore, when the driving gear 494 and the rotary gear 490 rotated by the third motor 493, the fixed plate 491 is rotated in the hopper 470, the plurality of guides by the rotation of the fixed plate 491. As the pin 492 is rotated, the tennis balls 200 in the hopper 470 are mixed up and down, leading the tennis balls 200 to the center of the fixing plate 491, and the tennis guides guided to the center of the fixing plate 491. The balls 200 are guided one by one and inserted into the center of the ring-shaped fixing plate 491 and the rotary gear 490 and are supplied to the ball supply chute 181 of the launch device 100.

When the vertical angle of the launch device 100 is adjusted as described above with reference to FIGS. 7 and 9A, when the driving gear 481 is rotated by the second motor 480 in the mounting frame 400, The half moon gear 186 of the 100 is rotated upward or downward.

The rotation of the vandal gear 186 is made around the hinge shaft 183 coupled to the fixed panel 185 of the launch device 100 and the hinge panel 414 of the mounting frame 400, and the hinge panel ( In 414, the fixed panel 185 of the launch device 100 is rotated at a predetermined angle to adjust the vertical angle of the launch device 100.

In this process, the vertical rotation angle of the launch device 100 is adjusted to be rotated within a maximum of 50 degrees, which is a switching bar provided in the second limit sensor 461 and the hinge shaft 183 provided in the hinge panel 414 ( 184).

That is, when the launching device 100 rotates, the hinge shaft 183 fixed to the fixed panel 185 of the launching device 100 is idling in the state inserted into the hinge panel 414 of the mounting frame 400. When the switching bar 184 is rotated by the idling of the hinge shaft 183 and detected by the second limit sensor 461 of the fixed hinge panel 414, the operation of the second motor 480 is stopped and at the same time the launching device The up and down rotation of 100 is stopped.

Therefore, the vertical rotation angle of the launch device 100 can be limited by the distance of the second limit sensor 461.

7 and 9b, when the first motor 440 is driven, the driving gear constrained to be rotatable on the lower surface of the first mounting panel 411 when the first motor 440 is driven ( 441 is rotated while being engaged with the ring gear 431 of the support shaft 430.

Then, the driving gear 441 is rotated along the circumferential surface of the ring gear 431 while being engaged with the ring gear 431, and thus rotates around the ring gear 431. Accordingly, the entire mounting frame 400 is supported. It rotates from side to side with respect to the axis 430.

As a result, the launching device 100 provided inside the mounting frame 400 is rotated to the left and right, and the left and right rotation angles of the launching device 100 are limited to rotate at a maximum of 30 degrees, that is, 15 degrees from the center to the left and the right, respectively. This is achieved by the first limit sensor 460 provided on the bottom surface of the first mounting panel 411 and the switching bar 432 provided on the ring gear 431.

That is, when the driving gear 441 rotates around the ring gear 431 of the support shaft 430, the whole of the first mounting panel 411 and the mounting frame 400 is driven by the driving gear 441. ) Is rotated to the left and right, and when the switching bar 432 fixed to the ring gear 431 of the support shaft 430 is detected by the first limit sensor 460 in this process, the first motor 440 At the same time as the operation is stopped, the left and right rotation of the mounting frame 400 is stopped.

Accordingly, the left and right rotation angles of the mounting frame 400, that is, the launching device 100, may be limited by the interval of the first limit sensor 460.

On the other hand, even if the firing device 100 is rotated up and down and left and right in the mounting frame 400 as described above, the tennis ball 200 in the hopper 470 is smoothly supplied to the ball supply chute 181 of the launch device 100 The third motor 493 is operated when it is detected that there is no tennis ball 200 in the ball supply chute 181 by the sensor 182 during the supply process of the tennis ball 200.

Then, the driving gear 494 of the third motor 493 is rotated, and the fixed plate 491 fixed to the upper surface of the rotary gear 490 is rotated while the ring-shaped rotary gear 490 is rotated. Guide pins 492 on 491 are rotated in hopper 470.

By the rotation of the guide pins 492 as described above, the tennis balls 200 in the hopper 470 continue to be mixed up and down to guide the tennis balls 200 to the center of the fixing plate 491, a plurality of guide pins ( 492) is inserted into the inside of the tennis ball 200 only one is inserted into the center of the ring-shaped fixing plate 491 and the rotary gear 490 is smoothly supplied to the ball supply chute 181.

Through this process, the tennis balls 200 in the hopper 470 are continuously supplied and fired one by one to the ball supply chute 181 of the firing apparatus 100.

Although the present invention has been described in detail through specific examples, it is intended to describe the present invention in detail, and the present invention is not limited thereto, and should be understood by those skilled in the art within the technical spirit of the present invention. It is obvious that modifications and improvements are possible.

Simple modifications and variations of the present invention are all within the scope of the present invention, and the specific scope of protection of the present invention will be apparent from the appended claims.

100: launch device 110: main body
120: finishing panel 121: forward port
122: reverse port 123: exhaust port
124: supply port 125: support bar
130: first cylinder 131: supply passage
132: exhaust passage 140: diaphragm
141,142: communication path 150: second cylinder
151: supply port 152: O-ring
160: piston 161: connection link
170: ball piston 171: supply port
172: opening 173: packing member
180: ball housing 181: ball supply chute
182: detection sensor 183: hinge axis
184: switching bar 185: fixed panel
186: Vandal Gear 190: Barrel
190a: coupling portion 191: connecting member
191a: engagement protrusion 191b: insertion protrusion
200: tennis ball 300: holding frame
310: handle 320: caster
400: mounting frame 410: protective panel
411,412,413: Mounting panel 414: Hinge panel
414a: Guide groove 414b: Guide pin
420: emergency switch 430: support shaft
431 ring gear 432: switching bar
440: first motor 441: drive gear
450: regulator 451: solenoid valve
460,461 limit sensor 470 hopper
480: second motor 481: drive gear
490: rotary gear 491: fixed plate
492: guide pin 493: third motor
494: Drive Gear

Claims (15)

The mounting frame installed on the holding frame is rotatably provided up and down, left and right, and the mounting frame is provided with a protection panel that is installed to surround the mounting frame to protect the launching device and the barrel of the launching device penetrates to the outside. Tennis ball launching device equipped with a hopper for supplying the ball to the ball supply chute of the launch device,
A main body having a barrel filled with compressed air therein and guided to a tennis ball at an end thereof; A first cylinder provided inside the body and having a piston movable therein; A second cylinder provided inside the main body to be isolated from the first cylinder and having a supply port through which the compressed air inside the main body is supplied; And a ball piston provided inside the second cylinder and connected to the piston of the first cylinder and supplying compressed air through a supply port of the second cylinder into the second cylinder when it is withdrawn from the second cylinder.
The circumferential surface of the ball piston is provided with a supply port communicating with the supply port of the second cylinder when the ball piston is withdrawn from the second cylinder,
The first cylinder has a supply passage and an exhaust passage through which air can flow in its thickness layer, and the supply passage is provided in communication with the inside of the first cylinder, and the exhaust passage is provided in communication with the inside of the second cylinder.
A diaphragm is provided between the first cylinder and the second cylinder, and the diaphragm communicates a first communication path for communicating the first cylinder and the supply path into the first cylinder, and an exhaust path of the first cylinder into the second cylinder. To form a second communication path,
The mounting frame is provided with a rotating means for rotating the launch device to the left and right, the rotating means is provided on the support frame for supporting the mounting frame; A ring gear fixed to the circumferential surface of the support shaft; A first motor fixed to the mounting frame; And a drive gear rotatably provided in the mounting frame while being engaged with the ring gear of the support shaft to be rotated by the first motor, wherein the drive gear is rotated along the ring gear to rotate the mounting frame from side to side on the holding frame. ,
The mounting frame is provided with a supply means for supplying a tennis ball one by one into the launch device, the supply means is a ring-shaped rotary gear rotatably provided between the hopper and the launch device; A ring-shaped fixing plate coupled to the rotary gear and forming a bottom surface of the hopper; A plurality of guide pins provided on a fixed plate; A third motor fixed to the mounting frame; A drive gear rotatably provided in the mounting frame in engagement with the rotary gear, and rotated by a third motor, including a guide ball on the fixed plate as the rotary gear is rotated in the hopper as the rotary gear is rotated. Induction insert into the center of the fixed plate and the rotary gear to be supplied to the launch device,
A plurality of guide pins are provided to have a curvature gradually entered from the outside of the fixed plate to the inside, while the height of the guide pin is provided to gradually increase from the outside of the fixed plate toward the inside.
The method according to claim 1,
Between the body and the barrel is provided with a ball housing for supplying balls one by one to the ball piston front,
The ball housing is provided with a ball supply chute to supply the ball,
Ball supply chute is provided with a sensor for detecting the presence of the ball, ball ball launching device to operate the lighting means when there is no ball.
The method according to claim 1,
The protective panel of the mounting frame is a tennis ball launch device is provided with an emergency switch for stopping the operation of the launch device.
The method according to claim 1,
The ring gear of the support shaft is provided with a protruding switching bar, the mounting frame on both sides of the switching bar is provided with a first limit sensor that is in contact with the switching bar when rotating, respectively, tennis ball launch device that can adjust the left and right rotation angle of the launch device.
The method according to claim 1,
The mounting frame is provided with an angle means for rotating the firing device up and down,
The angle means is provided with a hinge axis fixedly attached to the launch device to rotatably couple the launch device to the mounting frame,
A fixed gear fixed to the launch device;
A second motor fixed to the mounting frame;
And a drive gear rotatably provided to the mounting frame in engagement with the fixed gear of the launcher to be rotated by a second motor.
Tennis ball launching device is rotated up and down through the hinge axis as the drive gear is rotated.
The method according to claim 5,
The hinge shaft is provided with a protruding switching bar, and the mounting frames on both sides of the switching bar are provided with second limit sensors that are in contact with the switching bar when the hinge shaft is rotated together with the launch device. Tennis ball launching device that can adjust the angle of rotation of the launch device while idling.

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