JPH03111067A - Tennis game device - Google Patents

Abstract

PURPOSE:To perform practice with the same feeling as that in a actual tennis game by automatically drive a ball, performing the practive of tennis by returning a driven ball with a racket by a trainee, increasing the pleasure of a game or the practice by displaying a point, and automatically stopping a ball driving mechanism after the lapse of constant time. CONSTITUTION:When the ball driving mechanism is started to operate via a switch 49, the ball 8 is driven sequentially, and it hits a bound adjusting plate 22, then is driven to a trainee side. When no bounding is required, the ball can be evaded from hitting the bound adjusting plate 22 by descending downward. The trainee returns the ball 8 with the racket 9. The ball 8 is received with a back net 6 and enters a pedestal 1. When the ball hits a service line plate 4, the service line plate 4 is moved backward, and activates the operating switch 49 of a ball hitting mechanism, and hereafter, the ball is automatically driven out. After the lapse of constant time, a disk 46 is rotated in one revolution, and the service line plate 4 is turned to an original state, and the switch 49 is inactivated, thereby, the ball hitting mechanism is stopped. A specific disk 7 is turned backward when receiving the ball, and the number of times of hitting is displayed as the point.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a tennis game device, which provides the same feeling as playing actual tennis while enjoying a tennis game indoors alone. This is something that can be done to the kidneys.

2. Description of the Related Art In general, a large number of various types of training equipment and devices are provided in order to become proficient in a specific sport. For example, baseball batting practice devices and golf bat practice devices are widely used. In particular, a ball batting practice device is a mechanical structure or main element that sequentially launches a predetermined number of balls, and the actual ball is pitched toward a practitioner, who then hits it with a bat. .

Furthermore, toys that make games of various sports, such as
Although many game machines for baseball, golf, Zarakar, rugby, etc. are provided, there are no tennis game machines that have a mechanical structure other than those that use electronic parts.

Problems to be Solved by the Invention The present invention provides a mechanical structure that allows people to enjoy the tennis smash game in a narrow space such as an indoor space, and provides a realistic tennis practice by creating a feeling similar to that of an actual tennis match. The present invention is intended to provide a tennis game device of the type described above.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention basically provides a pedestal having a slanted and elongated bottom plate having a through hole and a retractable ball stopper near the hole, and a lower part thereof. A housing is formed in the housing, and a ball-hitting mechanism for successively firing balls is housed inside, and a plate-shaped body resembling a net is erected on the front part of the housing, and the plate on which the fired balls bounce is rotated horizontally in the vertical direction. We constructed a tennis game device in which ball receivers imitating back nets were installed on the back of the device so that they could move, and we developed this step by step. A cradle has a sloping and elongated bottom plate with a ball stopper, and a housing is formed at the bottom of the pedestal, and a ball-hitting mechanism that sequentially launches balls is housed inside, and a plate-shaped body resembling a net is attached to the front part of the cradle. At the same time, a bounce adjusting plate is installed in a horizontal position so that it can be rotated vertically, and a ball receiver imitating a back net is installed on the back side of the board, and the ball bounces when the ball hits the ball. A tennis game device is provided with a service line plate in front of the receiver that rotates backward when a serve ball hits and activates a switch to start the ball hitting mechanism, and further includes a service line plate that can appear and retract from a through hole and its vicinity. A housing is formed at the bottom of a pedestal having a ball stopper and an elongated slanted bottom plate, and a ball-hitting mechanism for sequentially hitting balls is housed inside the pedestal, and a plate-shaped body resembling a net is erected on the front part of the pedestal. At the same time, a bounce adjustment plate is installed in a horizontal position so as to be able to rotate vertically when the ball is hit by the ball. In front, there is a service line plate that is hit by a serve ball and rotates backward to activate a switch and starts the ball hitting mechanism, and a scoring disc that is hit by a hit ball and rotates backward to become a target.
A tennis game device includes a score display board that displays the number of tilts of the score disc, and a first rotary cam that rotates at high speed via an electric motor, and an electric motor on the side of the Moeki ball batting machine. The second rotating at low speed through
a rotating cam; a first crank lever that engages and disengages from the first rotating cam and is capable of reciprocating in the axial direction; a second crank lever that engages and disengages from the second rotating cam and rotates to engage and disengage from the first crank lever; A tennis game device includes a shooter crank to which an end of the first crank lever is pivoted and is rotatable, and a leaf spring connected to the shooter crank and capable of instantaneously touching the ball. and a tennis game in which the second crank lever has a claw portion which is rotatably biased by a spring, and the claw portion is engaged with and disengaged from a protrusion formed on the first crank lever. further comprising a tennis game device in which the net is provided with a through hole through which a ball hit by a ball hitting mechanism passes; and the service line plate is rotatably supported on a shaft. A crank lever with a fixed area, a plate with a predetermined area connected to one end of the crank lever, a roller rotatably supported on the other end of the crank lever, and a connected torsion spring, and a disk having a cam protrusion that engages with the roller and rotates the crank lever;
A ratchet gear that rotates each time, a rack plate that meshes with the ratchet gear to move in the longitudinal direction, a switching lever that engages with the rack plate and can swing, and a shaft portion at both ends of the switching lever. a pair of score boards that are engaged with each other and movable in the axial direction, and a timer that has claws that are protruded at regular intervals on the outer periphery of the score boards and claws that can be engaged and detached, and that can rotate at a predetermined speed. A tennis game device is constituted of a board and a return crank for making one rotation of the timer board and returning the rack board to its original state.

Furthermore, if multiple balls are used, the balls will scatter and must be picked up. In order to achieve this, a winding cam is provided that rotates coaxially with the second rotating cam of the ball striking mechanism and with a phase difference of 90 degrees, and a winding crank that is in sliding contact with the winding cam is rotatably biased. A shaft is rotatably supported by the winding crank, a winding drum is pivotally attached to the shaft, one end of a string is connected to the winding drum, and the other end of the string is connected to a ball. 5. A tennis ball according to claim 4, further comprising a ball winding mechanism configured to connect a gear to the shaft via a clutch, and configure a transmission gear for rotating the gear to be interlocked with the drive mechanism. This is a configuration of a game device.

Function According to the present invention, basically, when a plurality of balls are placed in the pedestal and the ball hitting mechanism is started via a switch, the balls are hit one by one one by one and hit the bounce adjustment plate. It bounces and flies towards the master. If bounce is not required, rotate the bounce adjusting plate downward to prevent it from hitting the ball. The practitioner then hits the ball back at the cradle with a racket.

The ball is received by the back net and enters the receiver. This operation is repeated as long as the ball is hit.

In order to add variability to this basic movement, the service line plate is designed to create a ball that is hit by a racket as a service ball, and when it hits the service line plate,
The service line plate rotates backwards, the electric motor of the ball hitting mechanism is turned on, and the balls are automatically hit one after another. After a certain period of time has elapsed, the disk rotates once to return the service line plate to its original state, and the switch is turned off to stop the ball hitting mechanism and automatically end the game.

Further, the scoring disk rotates backward when a hit ball hits the ball, and the number of times the disk is rotated is displayed on the disk via the score display 1114M.

Further, even if the ball is hit back and scatters outside the device, the ball winding mechanism automatically winds up the string, keeps the ball stationary in front of the ball hitting mechanism, and frees the winding mechanism.

Example An embodiment of the present invention will be described below with reference to the drawings.

Figure 1 is a perspective view of the whole, and in the figure,! is a pedestal, 2 is a plate-shaped body imitating a net, 3 is a baseline court, 4 is a service line plate, 5 is a score display board, 6 is a ball receiver that imitates a back net, is a lid, 7 is a scoring disc, 8 represents a ball, and 9 represents a racket.

The pedestal 1 is an elongated box-like body having a housing 10 housing a ball-hitting mechanism at the lower center thereof, and a plate-like body 2 resembling a net is provided as a side wall with one longitudinal side of the housing 10 as the front side. The ball receiver has a lid 6, a service line plate 4, and a score display board 5 erected with the other longitudinal side as the back, and a score disc 7 is provided so as to be movable and swingable in the front and rear directions. In addition, on both sides of the short side, surrounding plates t 1,1 t are provided erected to respectively adjoin the plate-shaped body 2 and the ball receiver lid 6 . In addition, a ball 8 is attached to the bottom plate 12 of the pedestal l.
A through hole 13 through which the material falls is bored approximately in the center, and
That hole! 3, forming a slope on both the left and right sides. Bottom F1 on both left and right sides of through hole I3. +2 has
In order to cause the balls 8 to fall one by one into the through-hole cover 3, ball stoppers 14 and 14 for stopping the transfer of the balls 8 are provided so as to be retractable.

The plate-shaped body 2 is erected on a pedestal l with posts I5.15 on both sides thereof, and a through hole 16 through which the ball 8 can pass is bored approximately in the center thereof.

The post 15.15 and the plate-like body 2 may be constructed in one piece.

The baseline coat 3 is supported on the front surface of the housing 10 below the through hole 16 of the net 2 so that its inclination can be adjusted, and as shown in FIG. is installed in the housing IO in a horizontal position,
A ratchet wheel 20 that engages with the ratchet pawl 17 is fixed to one end of the baseline coat 3, and a shaft 21 of the ratchet wheel 20 is rotatably supported by the housing 10. Further, on the upper surface of the other end of the baseline coat 3, a bound adjusting plate 22 having an uneven surface is stretched.

As shown in FIG. 2 and FIG.
A ball seat for keeping the ball 8 stationary is provided on the upper surface of the ball seat, and a shooter crank 24 is rotatably supported on the housing IO by a shaft 25 on the back of the ball seat. The spring 26 is connected, and one end of the first crank lever 28 is connected via the shaft 27. The first crank lever 28 has projections 29 and 30 formed above and below the substantially central portion thereof, and one end of a coil spring 31 is connected to the other end. The other end of the coil spring 31 is connected to the housing 10, and the first crank lever 28 is always urged to move leftward in the drawing. A second crank lever 35 rotatably supports a movable pawl 32 that engages and disengages with the protrusion 29 of the first crank lever 28 on a shaft 33, and is biased to rotate counterclockwise in the drawing by a tension spring 34. However, the - end is attached to axis 3
6, it is rotatably supported by the housing 10, and a striking part 37 is formed at the other end, and the striking part 37 is engaged with a guide member 38 so as to be able to reciprocate in the vertical direction. Guide member 38 is part of housing 10 . Furthermore, the first rotary cam 39 engages and disengages with the projection 30 of the first crank lever 28 and the second rotating cam 39 hits the striking portion 37 of the second crank lever 35.
Rotary cams 40 are each rotatably supported by the housing 10. The first rotary cam 39 rotates at high speed, and the second rotary cam 40 rotates at low speed, and are connected to a drive source such as an electric motor (the path shown in the figure) via a speed reduction mechanism. One electric motor may be shared, or each may be provided separately.

The service line plate 4 is made of a plate-shaped body with a predetermined area, and as shown in FIG.
It is located above the . That is, the switch crank 42 is rotatably supported on the housing IO by the shaft 41, and one end of the torsion spring 43 is connected to the lower end of the switch crank 42. The other end of the torsion spring 43 is supported by the housing 10. A roller 44 is rotatably supported at the other end of the switch crank 42, and a disk 46 having a cam protrusion 45 that engages and disengages from the roller 44 is rotatably attached to the pedestal 1 about a shaft 47. Supported. The sleeve 47 is connected to a drive source in the ball hitting mechanism and rotates the disc 46. A switch 49 equipped with an actuator 48 that comes into contact with the service line plate 4 is fixed to the pedestal l.

The score display mechanism is housed in a case 90 shown in FIG. 5, and as shown in FIGS. The bush 5 has a plate 7 and a bush crank 51 each fixed at a predetermined angle, and a slide plate 52 that comes into contact with the bush crank 51 protrudes from the bottom of the case 90 through an elongated hole 53.
4 so as to be movable in the longitudinal direction, and the bush 54
The radiet gear 55 is rotatably supported. A case 90 is attached to the ratchet gear 55 so as to be able to swing around the shaft 56.
Ratchet pawls 57 and 58 pivotally supported on the bottom of the
Furthermore, a binion 60 that meshes with the rack plate 59 is integrally connected. The ratchet pawl 57 has a through hole 62 that engages with a sleeve 61 protruding from the slide plate 52. One end of the rack plate 59 is inserted into a hole 92 of a guide part 91 horizontally protruding from the rear wall of the case 90, and a tension spring 63 is connected near the other end, with a predetermined interval on the top surface. A pair of bosses 64, 64 are provided protruding from the top, and a lever portion 65 is provided to hang down and project from the lower surface near the other end. Between the above boss 64.6i? A switching lever 66 having an extending arm portion is rotatably supported at the center of the switching lever 66 via a shaft 67 at the bottom of the pedestal l. The switching lever 66 has U-shaped yoke portions 68 at both left and right ends with the shaft 67 as the center. These yoke portions 68.・The shafts 71 and 72 of the score board 69 and 70 are respectively inserted into the sleeves 71 and 72, and an annular protrusion 73 that is sandwiched between the yoke portions 68 is formed on the sleeves 71 and 72, respectively.
When the switching lever 66 swings, each of the shafts 71 and 72 is configured to be able to move in the axial direction. The switching lever 66 pushes the shaft 72 of the scoreboard 70 toward the front in the figure to position the scoreboard 70 and a timer board 80 (described later) on the same vertical plane, and moves the shaft 7I of the scoreboard 69 toward the rear in the diagram to set the timer. It is located on a different vertical plane from the board 80. Further, a click spring 74 is brought into contact with one end of the switching lever 66 to prevent the switching lever 66 from rotating inadvertently.

Each of the score boards 69 and 70 is integrally formed with a gear 75, and a click spring 76 that is in constant contact with the gear 75 is provided so that the score board 69 and 70 can be rotated by a predetermined angle. Furthermore, seven projections 77.78 are provided at predetermined intervals on the outer peripheral surface of the score board 69.70.
A timer board 80 has protrusions 79 and 79a protruding from the outer circumferential surface to engage with these protrusions 77 and 78, respectively.
h (A bevel gear 82 is rotatably supported and meshes with a bevel tooth portion 81 formed in an annular shape on the back side of the timer board 80. The bevel gear 82 is rotatably supported so that its shaft 83 is connected to the drive motor. It is rotatably supported on the case 90 via a groove.As shown in FIG. Over, 0.15, and 30.40 are displayed at predetermined intervals.The timer board 80 is provided with a protrusion 85 on its shaft 84;
A crank lever 86 is rotatably supported on a shaft 87 protruding from the bottom of the pedestal 1, and the crank lever 86 can be engaged with and detached from a lever part 66 of the rack plate 59. It is. Incidentally, the score board 69.70 and the timer board 80 are each attached to a case 9, as shown in FIG.
A fan-shaped window hole 87 bored in the score display board 5, which is the front wall of 0
,88.89.

As shown in FIG. 8, the ball stopper 14.14 has a pair of third rotary cams 93.93 coaxial with the second rotary cam 40, and is configured to move the pair of third rotary cams 93.93 differently from each other by 180 degrees, and A lever 95.95 is arranged with a phase difference of 90 degrees from the rotating cam 40, and has an end that comes into contact with the second rotating cam 93.93 by a spring 94.94. The lever 95.95 is coaxially supported on the shaft 36 of the crank lever 35, and the lever 95.95 is rotated by the rotation of the second rotating cam 93.93.
5 is provided so that the other end portion thereof protrudes and retracts from the bottom plate 12.

The ball 8 is made of elastic resin and has a diameter of about 10 cm or less.
The racket 9 is made of resin or the like as appropriate. In addition,
You can also use a real tennis ball as Ball 8.
In that case, the tennis game device itself may be manufactured with dimensions appropriate to its needs.

To explain the operation of the above embodiment, in this tennis game device, a plurality of balls 8 are placed in the pedestal 1 in advance, and the player picks up one of the balls 8 and uses the racket 9 to line the service line. When the serve ball is hit toward the plate 4 and the service line plate 4 falls backward, the service line plate 4 falls counterclockwise in FIG. The actuator 48 turns on the switch 49 to start the drive source, and the first and second rotating cams 39 and 40 in FIG.
rotate at high and low speeds, respectively. And the ball 8 that was hit is on the pedestal! At the same time, the first and second rotating cams 39 and 40 rotate clockwise and counterclockwise, respectively. A third rotating cam that rotates in conjunction with the second rotating cam 40 allows one ball stopper 14 to
When the ball 8 retracts downward from the bottom plate 12 and one ball 8 falls into the through hole 13, the ball stopper 14 retracts from the bottom plate 12.
It goes up and prevents the subsequent ball 8 from falling. Therefore,
The second rotating cam 40 is connected to the striking portion 37 of the second crank lever 35.
When the second crank lever 35 is pushed downward, the second crank lever 35
6, the movable claw 32 pushes down the protrusion 29 of the first crank lever 28, and the first
The crank lever 28 moves downward, whereupon the protrusion 30 of the first crank lever 28 rotates at high speed.
Being kicked by the rotating cam 39, the first crank lever 28 is flipped toward the shooter crank 24. Therefore, the shooter crank 24 instantaneously rotates in the clockwise direction in the drawing around the shaft 25, the leaf spring 26 kicks out the ball 8, the ball 8 hits the bounce adjustment plate 22 of the baseline court 3, and the plate-shaped body 2 It jumps out to the practitioner's side via the hole I6. When it is not necessary to bounce the ball 8, the baseline court 3 may be rotated to a substantially horizontal position to prevent the ball 8 flying out from the through hole 16 from hitting the bounce adjusting plate 22. Then, the practitioner hits the ball 8 that flew out of the hole 16 toward the scoring disk 7 with a racket 9. When the ball 8 enters the pedestal 1 without hitting the scoring disc 7, the ball 8 that has entered the pedestal 1 is moved by the third rotating cam 92 which is linked to the second rotating cam 40. The ball stoppers 14 and 14 alternately appear and disappear, and the balls 8 move toward the through hole 13 within the pedestal l and fall one by one into the through hole 13 at intervals, and are successively launched in the same manner as described above. . Therefore, the practitioner plays the game by repeatedly hitting the ball back. If the ball 8 hits within the score [7], the scoring disc 7 falls backward (as shown by the imaginary line), and the boot crank 53 rotates in the opposite direction in FIG. 6 or 7. When the slide plate 52 is moved toward the front in the figure, the ratchet pawls 57 and 58 rotate and the ratchet gear 55 is
The rack plate 59 is rotated by the claw distance, and the rack plate 59 moves toward the front in the figure by the claw distance. In this way, when the scoring disk 7 falls four times, the rack plate 59 is advanced by 4 teeth, and the boss 64 is moved for the first time.
．． 64, the switching lever 66 with which the arm part engages rotates toward the front in the figure, and the shaft 71 of the score board 69 moves in the axial direction toward the front in the diagram, and the shaft 72 of the score board 70 moves toward the rear in the diagram. axially, so that the score board 69 is located in the same vertical plane as the timer board 80 and their protrusions 77 .
79 become engageable with each other, and the score board 70 leaves the same vertical plane as the timer board 80. Therefore, the protrusion 7 of the timer board 80 rotating at a constant speed
9 moves the protrusion 77 of the scoreboard 69 by a predetermined angle,
The six scoreboards are intermittently rotated counterclockwise, and the scores of the practitioners are displayed in the window 87. If the number of times the score board 7 has fallen is four or less, the switching lever 66 does not rotate, and therefore the score board 70 is on the same vertical plane as the timer board 80, and the protrusion 78 is on the same vertical plane as the timer board 80. protrusion 7
9a and intermittent rotation counterclockwise at a predetermined angle, the score of the machine is displayed in the window hole 88. Therefore, when the disc 46 and the timer board 80 each rotate once through the drive source and a game over message is displayed on the timer board 80 in the window hole 89, the protrusion 86 moves toward the crank lever 86.
The crank lever 86 is the lever of the rack plate 59! @65 and pushes the rack plate 59 back to its original position, thereby returning to its original state via the boss 64°64 and over the switching lever 66 or click spring 74. The ratchet gear 55 connects to the ratchet pawl 5 via the pinion 60.
7. Rotate counterclockwise while kicking 58. Also, when the disk 46 rotates once, the cam protrusion 4 in FIG.
5 pushes down the roller 44 to rotate the switch crank 42 about its shaft 41 in the clockwise direction shown in the figure, and the switch crank 42 returns to the vertical state shown by the solid line by the force of the torsion spring 43. Therefore, service line plate 4
is restored to the vertical state, the actuator 48 turns off the switch 49, the rotation of the drive source is stopped, and the game is completely ended. Timer board 80 and score board 69°7
Returning the 0 display to O is done manually by rotating reset knobs 97 and 98 provided at the outer ends of the shafts 71 and 72, respectively.

If you want to use the tennis game device continuously as a tennis smash training machine, keep the service line plate 4 tilted backwards, set the switch 49 to the 1111 position using the actuator 48, and turn the disc 46 on. If we find a means to prevent rotation,
cradle! The balls 8 inside are hit one after the other.

Furthermore, in the above embodiment, the service line plate 4, the score disc 7, and the score display board 5 are not provided and omitted;
The switch 49 can be operated manually, and when the switch 49 is operated without serving the service ball, the ball 8 is
The game may be configured so that the player can repeatedly hit the ball 8 and hit the ball 8 back in sequence, so that the game can be played for a desired amount of time.

Further, in the above embodiment, the leaf spring 26 and the shooter crank 24 that hit the ball 8 were provided, respectively.
As shown in the figure, a pair of star cranks 24.
24 are each rotatably supported on a curved shaft rod 25a, and a first crank lever 28, 28 is rotatably attached to each shooter crank 24, 24, as in the previous example. 2 crank lever 35,3
5 and the second rotary cam 40.40, and the phase of the second rotary cam 40.40 is shifted by 180 degrees to alternately drive the shoeter cranks 24.24. The ball 8 may be hit from the rear right or the rear left at different angles so that the ball 8 that is hit becomes a curve ball.

Further, according to the above embodiment, the ball 8 is launched,
After the practitioner hits the ball back, the ball 8 does not necessarily hit the scoring disc 7 or be stopped by the ball receiver 6 and stored in the bottom plate I2, and the ball 8 may scatter outside the device. , the practitioner must take the trouble to pick up the ball 8 into the device. Therefore, in order to eliminate such trouble, a string of the required length is connected to the ball 8, so that even if the ball 8 that is hit back scatters outside the device, the string is automatically wound up and returned to the inside of the device. It is better to be able to do so.

That is, as shown in FIG. 1O, an LI groove 99 is formed in the leaf spring 26 that is fixedly attached to the shooter crank 24, a string 100 is provided passing through the U groove 99, and one end of the string 100 is provided. The ball 8 is connected to the shaft 10, the winding drum 101 is connected to the other end, and the chain winding drum 101 is connected to the shaft 10.
2, it is rotatably supported on the winding crank 103. The winding crank 103 is rotatable about shafts 104 and 10/I, and is biased downward by a torsion spring 105, and in the direction of the biasing force, a gear 106 pivotally attached to the shaft 102 engages and disengages. The drive gear 107 is rotatably supported. Drive gear +07 is a clutch! 08 to the shaft +10 of the transmission gear 109, and the transmission gear 10
9 is configured to be rotatable via the drive mechanism in the above embodiment. Furthermore, the shaft 40a of the second rotating cam 40
A winding cam III is pivotally attached to the winding crank +03, and a protrusion 112 that abuts the winding cam I11 is formed on the winding crank +03. The small diameter portion of the winding cam I11 and the second rotating cam 40
The cam parts have a phase difference of 90 degrees.

That is, when winding the string 100 onto the winding drum lot, the small diameter portion of the winding cam Ill engages the winding crank 103.
is in contact with the protrusion 112 of the winding crank 103
is rotated clockwise around the shaft by the force of the torsion spring 105, and the gear 106 meshes with the drive gear 107. On the other hand, when the ball 8 is launched by the leaf spring 26, the winding crank +03 is rotated by the force of the torsion spring 105. axis 1 against force
14 in the counterclockwise direction, the gear 106 and the drive gear 107 are disengaged, and the winding drum lot is configured to be able to rotate freely.

In this configuration, the string +00 is wound around the winding drum lot and the ball 8 is stationary in front of the leaf spring 26.
However, the second rotating cam 40 drives the second crank lever 35, and the first crank lever 28 drives the shooter crank 24.
The ball 8 is shot out in the same way as in the previous embodiment, and the ball 8 is hit back by the practitioner and flies to the outside of the apparatus. Rotate clockwise around the center, gear 1
06 is meshed with the drive gear 107, so that the shaft +
02 rotates and the winding drum 101 winds up the string 100. And even if the ball 8 comes to rest in front of the leaf spring 26, the shaft still remains! When 02 rotates, clutch 1
08, the shaft 102 is not subjected to forced winding rotation.

According to the present invention described in detail, the switch is actuated by operating a switch or by initially hitting a service ball against a service line plate, and the balls are automatically launched sequentially and bounced onto a bounce plate. The player can enjoy Tennis Smash as a game by repeatedly hitting the ball that flies out to the player's side without bouncing, or by repeatedly hitting the ball back with the racket, or practicing tennis with real feeling, and displaying the score. It is a very interesting and practical game device because it increases the enjoyment of playing games or practicing, and also automatically stops the ball hitting mechanism and ends the game after a certain period of time has elapsed. Furthermore, the device can be made compact and can be used indoors, so it is convenient.

[Brief explanation of drawings]

Figure 1 is an overall perspective view, Figure 2 is a vertical side view of the ball hitting mechanism, Figure 3 is a perspective view thereof, Figure 4 is a vertical side view of the service line plate, and Figure 5 is a front view of the score display board. , FIG. 6 is an exploded perspective view showing the score display mechanism, FIG. 7 is a plan view of the score display mechanism, FIG. 8 is a partial plan view, and FIG. 9 is a plan view showing another example of a part of the ball hitting mechanism. 10 are perspective views of essential parts of the ball winding mechanism. l... pedestal, 2... plate-shaped body, 3... base line coat, 4... service line plate, 5...
Score display board, 6... Back net, 7... Scoring disc, 8... Ball, 9... Racket, 10... Housing, 12... Bottom plate, 13.16... Transparent Hole, 14
... Ball stopper 18 ... Leaf spring, 20 ...
Ratchet wheel, 22... Bound adjustment plate, 24...
Shooter crank, 26... leaf spring, 28... first crank lever, 35... second crank lever, 3
9... First rotating cam, 40... Second rotating cam, 42
...Switch crank, 43...Torsion spring,
44...Roller, 4B...Disc, 48...
Actuator, 4...Switch, 51...Pushy crank, 52...Slide plate, 54...Button, 55...Ratchet gear, 57.58...
Ratchet pawl, 59...Rack plate, 60...Binion, 64...Boss, 66...Switching lever, 69
．． 70...Score board, 74.76...Click spring, 80...Timer board, 85...Protrusion, 86...
Crank lever 87.88.89...Window hole, 90...
・Case, 93...Third rotating cam, 96...Link lever, 97.98...Reset knob, 99...
U ir4.100... String, 101... Winding drum, 103... Winding crank, 105... Torsion spring, 106... Gear, 108... Clutch,
111...Retraction cam

Claims (9)

[Claims] (1) A cradle has a slanted elongated bottom plate with a through hole and a retractable ball stopper near the cradle, a housing is formed at the bottom of the cradle, and a ball hitting mechanism for sequentially hitting balls is housed inside the cradle, A plate-shaped body imitating a net is erected on the front part, and a bounce adjustment plate is provided that can be rotated horizontally in the vertical direction on which the ball hits and bounces, and a ball imitating a back net is installed on the back part. A tennis game device characterized by having a receiver standing upright. (2) A cradle has a slanted elongated bottom plate with a through hole and a retractable ball stopper near the cradle, a housing is formed in the lower part of the cradle, and a ball hitting mechanism for sequentially launching balls is housed inside the cradle, A plate-shaped body imitating a net is erected on the front part, and a bounce adjustment plate is provided that can be rotated horizontally in the vertical direction on which the ball hits and bounces, and a ball imitating a back net is installed on the back part. A tennis game device comprising: a ball receiver; and a service line plate in front of the ball receiver, which rotates backward when a served ball hits and activates a switch to start the ball hitting mechanism. . (3) A cradle has a slanted elongated bottom plate with a through hole and a retractable ball stopper near the cradle, a housing is formed at the bottom of the cradle, and a ball-hitting mechanism for sequentially launching balls is housed inside the cradle, A plate-shaped body imitating a net is erected on the front part, and a bounce adjustment plate is provided that can be rotated horizontally in the vertical direction on which the ball hits and bounces, and a ball imitating a back net is installed on the back part. A service line plate is provided in front of the ball receiver, and a service line plate that rotates backward when a served ball hits and activates a switch to start the ball hitting mechanism; A tennis game device comprising: a scoring disc serving as a target; and a scoring display mechanism that displays the number of times the scoring disc is tilted. (4) The ball hitting mechanism is capable of reciprocating in the axial direction by engaging and disengaging the first rotating cam that rotates at high speed via an electric motor, the second rotating cam that rotates at low speed via the electric motor, and the first rotating cam. a first crank lever, a second crank lever that rotates to engage and disengage from a second rotary cam to engage and disengage from the first crank lever, and an end portion of the first crank lever that is pivotably attached to a rotatable shoe. 4. The tennis game device according to claim 1, comprising: a starter crank; and a leaf spring connected to the starter crank and capable of momentarily contacting the ball. (5) The second crank lever has a claw portion that is rotatably biased by a spring, and the claw portion engages with and disengages from a protrusion formed on the first crank lever. 4. The tennis game device according to item 4. (6) Claim 1, 2 or 3, wherein the net is provided with a through hole through which a ball hit by a ball hitting mechanism passes.
The tennis game device described in . (7) The service line plate includes a crank lever rotatably supported on a shaft, a plate having a predetermined area connected to one end of the crank lever, and a shaft rotatably supported on the other end of the crank lever. 4. A tennis game device according to claim 2, comprising a supported roller, a connected torsion spring, and a disk having a cam projection that rotates once to engage the roller to rotate the crank lever. (8) The score display mechanism includes a ratchet gear that rotates the score disk rearward and rotates one tooth at a time, a rack plate that meshes with the ratchet gear and moves in the longitudinal direction, and a rack plate that engages with the rack plate. A switching lever that can be swung together, a pair of score boards whose shafts engage with both ends of the switching levers and are movable in the axial direction, and protrusions provided at regular intervals on the outer periphery of the score boards. 4. A timer board comprising a timer board having a claw that can be engaged and detached from the rack plate and rotating at a predetermined speed, and a return crank that returns the rack plate to its original state when the timer board rotates once. The described tennis game device. (9) providing a winding cam that rotates coaxially with the second rotary cam of the ball striking mechanism and with a phase difference of 90 degrees, and providing a winding crank that is in sliding contact with the winding cam and is rotatably biased; A shaft is rotatably supported on the winding crank, a winding drum is pivotally attached to the shaft, one end of a string is connected to the winding drum, and the other end of the string is connected to a ball. 5. The tennis game device according to claim 4, further comprising a ball winding mechanism comprising a gear connected to the shaft via a clutch, and a transmission gear configured to rotate the gear so as to be interlocked with the drive mechanism.