JP3155665U - Throwing device - Google Patents

Abstract

Provided is a pitching device that is simple in configuration and easy to handle, and that can obtain the ball flight distance and pitch stability. An upper roller 39 and a lower roller 41 are disposed on a support 11 of a pitching device 10 so as to reversely rotate each other and fire a ball 23, and the ball 23 is supplied between the upper roller 39 and the lower roller 41. A pitching motor 44 for rotating the ball chute 50 for rotating the upper roller 39 and the lower roller 41 is supported. A battery 53 is detachably disposed on the pitching motor 44, and the pitching motor 44 is driven by a DC power source of the battery 53. The peripheral speed of the lower roller 41 is set to be larger than the peripheral speed of the upper roller 39. Specifically, the ratio of the peripheral speed of the lower roller 41 to the peripheral speed of the upper roller 39 is set to 1: 1.45 to 1.65. [Selection] Figure 1

Description

  The present invention relates to a pitching device used for, for example, a soft baseball ball hitting practice, a toss batting practice, an infield and outfield defense practice, and the like.

  Many power-driven throwing devices have been proposed for hitting practice using a soft baseball. These power-driven throwing devices require a powerful motor to increase pitching speed, reduce pitching speed during pitching, and recover the pitching speed, which complicates the device. There was a problem that the weight increased.

  In order to solve such a problem, a small portable thrower has been proposed (see, for example, Patent Document 1). That is, this small portable thrower, that is, a portable power-driven throwing device, includes a housing, a throwing motor that discharges a ball from the housing, a shelf means that supports the throwing motor, and a ball feed motor that distributes the ball one by one. , With a ball chute. Further, the portable power-driven throwing device has a low-voltage built-in storage battery, and includes an electronic circuit that drives the throwing motor and the ball feed motor in conjunction with the low-voltage built-in storage battery. The portable power-driven throwing device is configured to be carried by hand and is miniaturized so that it can be easily carried in a trunk of a normal passenger car.

Japanese Patent No. 2668430 (first to third pages)

  However, the portable power-driven throwing device described in Patent Document 1 is configured to supply power from a built-in storage battery to a small DC motor, a ball feed motor, and a throwing motor that vibrate and swing the throwing machine. As described above, the built-in storage battery needs to be wired in order to supply power to each motor, and the distribution of power and the life of the battery must be taken into account. There was a problem of being complicated.

  Accordingly, an object of the present invention is to provide a pitching device that is simple in configuration and easy to handle, and that can obtain the ball flight distance and pitch stability.

  In order to achieve the above object, the pitching device according to the first aspect of the present invention supports an upper roller and a lower roller on the support body of the pitching device for rotating the balls in reverse and firing the ball. A ball chute for supplying the ball between the upper roller and the lower roller, and a throwing motor for rotating the upper roller and the lower roller, and a battery can be attached to and detached from the throwing motor And the peripheral speed of the lower roller is set to be larger than the peripheral speed of the upper roller.

  According to a second aspect of the present invention, in the device according to the first aspect, the ratio of the peripheral speed of the lower roller to the peripheral speed of the upper roller is set to 1: 1.45 to 1.65. Features.

  According to a third aspect of the present invention, there is provided the pitching device according to the first or second aspect, wherein the support of the pitching device is configured such that a support stand is erected on a support frame, and the upper roller is disposed on the support stand. A pitching mechanism including a lower roller, a ball chute, and a pitching motor is rotatably supported to change the ball launch angle, and a ball launch angle is further provided between the support stand and the pitching mechanism. It is characterized by including a firing angle adjusting member for greatly changing.

  According to a fourth aspect of the present invention, in the device according to any one of the first to third aspects, the upper roller and the lower roller are made of rubber, and their outer peripheral surfaces hold the ball. It is formed in the concave surface of circular arc shape in cross section.

  The throwing device according to claim 5 is the device according to any one of claims 1 to 4, wherein the ball chute is configured such that the ball thrown into the ball chute comes into contact with the upper roller, and then the upper chute. It is configured to be supplied between a roller and a lower roller.

According to the present invention, the following effects can be exhibited.
In the throwing device of the present invention, since the battery is detachably connected directly to the throwing motor, the battery can be removed and charged when the remaining capacity of the battery is reduced. What is necessary is just to attach directly to the motor for pitching. Therefore, the battery can be easily charged, and the battery can be easily mounted on the pitching motor to drive the pitching motor. Further, by supplying the ball from the ball chute between the upper roller and the lower roller, the ball is fired at a predetermined throwing speed based on the upper roller and the lower roller which are driven by the throwing motor and rotate in the reverse direction. . At this time, since the peripheral speed of the lower roller is set to be larger than the peripheral speed of the upper roller, the ball can be rotated backward to obtain lift.

  Therefore, according to the pitching device of the present invention, the configuration is simple, the handling is easy, and the flight distance of the ball and the stability of the pitching can be obtained.

The perspective view which shows the pitching apparatus in embodiment. The right view which shows a pitching apparatus. The left view which shows a pitching apparatus. The top view which shows a pitching apparatus. The front view which shows the relationship between an upper roller pulley, a lower roller pulley, and a pitching motor. (A) is a disassembled perspective view which shows the state which mounts a battery on the motor for pitching, (b) is a perspective view which shows the bottom face of a battery. The disassembled perspective view which shows the state which attaches a pitching mechanism on a support stand. The disassembled perspective view which shows the state which attaches a firing angle adjustment member to the frame board of a pitching mechanism. The partial front view which shows the pitching mechanism which has the minimum inclination angle. The partial front view which shows the pitching mechanism which has the largest inclination angle. The partial front view which shows the pitching mechanism which has the minimum inclination angle in the state which attached the firing angle adjustment member. The partial front view which shows the pitching mechanism which has a maximum inclination angle in the state which attached the firing angle adjustment member.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIGS. 1 to 4, the support body 11 constituting the pitching device (pitching machine) 10 of the present embodiment includes a pair of opposing support frames 12 and a connecting frame 13 that connects both the support frames 12. The support frame 14 is formed in a U-shape, and the support stand 15 is erected at the center of the connecting frame 13 of the support frame 14. A pair of moving wheels 16 are rotatably held by the axles 17 at the front ends of the support frames 12, and fixed stands 18 are suspended from the lower surfaces of both ends of the connection frame 13. The pitching device 10 can be easily moved by the pair of moving wheels 16. Further, the bottom of the fixed stand 18 is formed in an inverted conical shape so that the pitching device 10 does not move by biting into the ground when the pitching device 10 is placed on the ground. A moving arm 19 protrudes horizontally in the vertical center position of the support stand 15 so that the pitching device 10 can be moved by holding the moving arm 19.

  Insertion holes 20 are formed through the front end portions of the support frames 12, and lower end portions of a protection frame 21 having a vertically long rectangular shape are inserted and supported in the insertion holes 20. A protection net 22 is provided inside the protection frame 21. Is stretched. The protective net 22 prevents the ball 23 thrown and hit from the pitching device 10 from hitting the pitching device 10. An opening 22 a through which the ball 23 launched from the pitching device 10 passes is provided in the middle part of the protective net 22. In this embodiment, a soft baseball ball 23 is used as the ball 23.

  As shown in FIG. 7, an engagement recess 26 is provided at the lower end portion of the frame member 25 constituting the pitching mechanism 24. On the other hand, a fixing knob 27 formed of a bolt and a nut is passed through the through hole 28 at the upper end of the support stand 15, and the engaging recess 29 of the frame member 25 is engaged with the fixing knob 27, so that the pitching mechanism 24 is supported by the support stand. 15 is connected to the upper end portion. The support stand 15 between the fixed knob 27 and the moving arm 19 is provided with a crank-shaped inclination angle adjustment handle 30, and the inclination angle adjustment handle 30 is rotated clockwise toward the support stand 15. By moving the pitching mechanism 24, the upward inclination angle of the pitching mechanism 24 is increased, and by rotating counterclockwise, the upward inclination angle of the pitching mechanism 24 is decreased.

  That is, as shown in FIG. 8, both side portions of the lower end of the frame plate 31 constituting the frame member 25 are bent backward (to the right in FIG. 8) to form a U-shaped cross section. Each of the bolts 33 is penetrated and protrudes inward of the bent plate 32 by a predetermined length. As shown in FIG. 10, the tip end portion of the handle shaft 34 of the tilt angle adjustment handle 30 abuts against and presses the frame plate 31 to tilt the pitching mechanism 24. Regarding the inclination angle θ, the minimum inclination angle θ1 is set to −6 ° as shown in FIG. 9, and the maximum inclination angle θ2 is set to 18 ° as shown in FIG. Here, a minus inclination angle θ means that the firing direction of the ball 23 is below the horizontal direction, and a plus means that the firing direction of the ball 23 is above the horizontal direction. When it is desired to set the inclination angle θ to be larger than the maximum inclination angle θ2, the firing angle adjusting member 35 is used.

  As shown in FIG. 8, the firing angle adjusting member 35 is formed in a substantially fan shape in which both side walls 36 are wider toward the lower part, and the both side walls 36 are connected by a connecting wall 37 to have a U-shaped cross section. . A lateral L-shaped mounting recess 38 is provided on the inner edge of both side walls 36 of the firing angle adjusting member 35, and the mounting recess 38 is engaged with the bolt 33 of the frame member 25. 35 is attached to the frame member 25. Then, as shown in FIG. 12, the tip end portion of the handle shaft 34 of the tilt angle adjusting handle 30 comes into contact with and presses the connecting wall 37 of the firing angle adjusting member 35 to further tilt the pitching mechanism 24. Regarding the inclination angle θ when using the firing angle adjusting member 35, the minimum inclination angle θ3 is set to 17 ° as shown in FIG. 11, and the maximum inclination angle θ4 is set to 43 ° as shown in FIG. .

  As shown in FIG. 5, an upper roller pulley 40 that forms an upper roller 39 and a lower roller pulley 43 that forms a lower roller 41 are disposed at an upper position and a lower position of the pitching mechanism 24. A belt 47 is hooked on the upper roller pulley 40 and the lower roller pulley 43 via a pulley 45 and a tension roller pulley 46 of a pitching motor (brushless DC motor) 44 constituting the pitching mechanism 24. A rotational force is transmitted to the upper roller 39 and the lower roller 41. The belt 47 is formed of a round belt having a circular cross section, and the driving loss can be reduced by making resistance to the pulleys 40, 43, 45, 46 appropriate compared to the V belt.

  An upper roller 39 and a lower roller 43 formed of rubber ring-shaped rubber such as NBR (acrylonitrile-butadiene copolymer rubber) are fixed to the rotary shafts 48 and 49 of the upper roller pulley 40 and the lower roller pulley 43, respectively. ing. By using such specific rubber, the grip property (grip property) of the ball 23 can be improved, and the controllability of the ball 23 can be improved. The outer peripheral surfaces of the upper roller 39 and the lower roller 41 are formed as concave surfaces 39a and 41a having a circular arc section that becomes lower at the center (see FIG. 4), and are configured to easily hold the ball 23 between the concave surfaces 39a and 41a. ing.

  The ball 23 is sandwiched between the upper roller 39 and the lower roller 41, and in this state, the rollers 39 and 41 are fired forward (rightward in FIG. 2) by rotating in the opposite direction. Since such a wheel type throws the ball 23 between both the rollers 39 and 41, the controllability of the ball 23 is better than the conventional arm type, and the speed control can be easily performed. If the peripheral speeds of the rollers 39 and 41 are the same, the ball 23 is launched without rotating and is easily lowered by its own weight, and a sufficient flight distance cannot be obtained. On the other hand, by setting the peripheral speed of the lower roller 41 to be larger than the peripheral speed of the upper roller 39, the ball 23 rotates backward to generate lift, and the flight distance of the ball 23 can be extended. The flight of the ball 23 can be stabilized.

  The ratio of the peripheral speeds of the upper roller 39 and the lower roller 41 is determined by the ratio of the diameters of the upper roller pulley 40 and the lower roller pulley 43 and the outer diameters of the upper roller 39 and the lower roller 41. In this embodiment, the outer diameters of the upper roller 39 and the lower roller 41 are set to be the same, and the ratio of the peripheral speeds of the upper roller 39 and the lower roller 41 is determined by the ratio of the diameters of the upper roller pulley 40 and the lower roller pulley 43. . The ratio of the peripheral speed of the lower roller 41 to the peripheral speed of the upper roller 39 is preferably 1: 1.45 to 1.65, and more preferably 1: 1.50 to 1.60. When this ratio is smaller than 1: 1.45, sufficient rotational force is not applied to the ball 23, and lift is insufficient, so that the flight distance of the ball 23 cannot be increased. On the other hand, if it is greater than 1: 1.65, the rotation of the lower roller 41 becomes too fast, the abnormal rotation is applied to the ball 23, the flight of the ball 23 is not stable, and the flight distance cannot be extended. .

  As shown in FIGS. 1 and 4, a ball chute 50 for supplying the ball 23 between the rollers 39 and 41 is inclined from the rear obliquely upward to the front downward at the rear position of the upper roller 39 and the lower roller 41. It is provided in the shape. The ball chute 50 has an inlet portion 51 formed in an annular shape, from which four round bar-shaped guide rods 52 extend obliquely downward, and the upper two guide rods 52 extend to the vicinity of the upper roller 39. The lower two guide bars 52 extend to the vicinity of the lower roller 41. As shown in FIG. 4, the axis c1 of the ball chute 50 and the center line c2 of the outer peripheral surfaces of the upper roller 39 and the lower roller 41 are set on the same line as seen from the plane so that the ball 23 is launched straight. It has become.

  Then, as shown in FIG. 2, the ball 23 (solid line in the figure) thrown into the ball chute 50 first contacts the upper roller 39 (one-dot chain line in FIG. 2), and then the upper roller 39 and the lower roller 41 It is guided in between (the two-dot chain line in FIG. 2), and is fired to fly forward through the opening 22a of the protective net 22 (broken line in FIG. 2). Therefore, the ball 23 can be smoothly guided between the upper roller 39 and the lower roller 41, and the ball 23 can be fired in a stable state.

  As shown in FIG. 1, the pitching motor 44 is fixed to the frame member 25 of the pitching mechanism 24 so as to extend horizontally on the opposite side of the upper roller 39 and the lower roller 41, and a battery 53 is mounted on the upper surface thereof. Is detachably attached. A start switch 54 is disposed on the rear surface of the pitching motor 44, and a speed adjustment volume 55 that adjusts the rotation speed of the pitching motor 44 is disposed. The speed adjustment volume 55 determines the rotation speed of the pitching motor 44, and the upper roller 39 and the lower roller 41 are rotated at a predetermined peripheral speed to determine the initial speed and flying distance of the ball 23. By adjusting the speed adjustment volume 55, the flight distance of the ball 23 can be adjusted within a range of 4 to 70 m, and the speed of the ball 23 can be reached up to 100 km / hr.

  As shown in FIG. 6A, a pair of rails 56 is disposed on the upper surface of the throwing motor 44, and a connecting portion 57 that is electrically connected to the battery 53 is provided between the rails 56. ing. Further, an engagement recess 58 is formed at the upper end of the pitching motor 44. On the other hand, as shown in FIG. 6 (b), a pair of rail grooves 59 are provided on both sides of the bottom surface of the battery 53, and engages with the rail 56 of the throwing motor 44 to connect the battery 53 to the throwing motor 44. It is designed to slide and be installed. An electrical connection 60 is provided between the rail grooves 59, and when the battery 53 is mounted on the pitching motor 44, it is connected to the connecting portion 57 of the pitching motor 44, and the pitching motor is powered by the battery 53. 44 is configured to be driven. The battery 53 is a lithium ion battery, and the output voltage is 26 VDC and the capacity is 3.8 AH. The battery 53 can be charged at a maximum speed of 1 hour with 100 VAC for home use.

  A stopper 61 projects from the end of the bottom surface of the battery 53. When the battery 53 is mounted on the throwing motor 44, the stopper 61 engages with the engaging recess 58 of the throwing motor 44, and the battery 53 is The pitching motor 44 is prevented from coming out. The stopper 61 is configured to always engage with the engaging recess 58 of the pitching motor 44 by a spring (not shown). When the battery 53 is removed from the pitching motor 44, the stopper 61 is moved against the biasing force of the spring. As a result, the pitching motor 44 can be disengaged from the engaging recess 58. The pitching mechanism 24 is integrally configured by an upper roller 39, a lower roller 41, a ball chute 50, a pitching motor 44, and the like.

  The pitching device 10 as described above can be used for practicing soft baseball hitting, and can also be used for practicing infield defense or practicing outfield defense for catching goro or fly.

Next, the operation of the pitching device 10 configured as described above will be described.
When the pitching device 10 is used, the fixed stand 18 is lifted by grasping the moving arm 19 and slightly lifting it, and in this state, the moving wheel 16 is moved to the ground of the place of use. The moving arm 19 is lowered on the ground, and the fixed stand 18 is lowered to a predetermined position on the ground. At this time, the bottom portion of the fixed stand 18 is formed in an inverted conical shape and bites into the ground, so that the pitching device 10 can be stably installed on the ground.

  Next, as shown in FIG. 6A, the battery 53 charged in advance is slid on the pitching motor 44 so that the rail 56 of the pitching motor 44 is engaged with the rail groove 59. Is connected to the connecting portion 57 of the pitching motor 44 so that the pitching motor 44 can be driven by the DC power of the battery 53. Thereafter, the start switch 54 of the pitching motor 44 is pressed to drive the pitching motor 44, and the speed adjustment volume 55 is turned to set the rotation speed of the pitching motor 44 to a predetermined value.

  Subsequently, as shown by a solid line in FIG. 2, when the ball 23 is thrown into the ball chute 50 from its inlet 51, the ball 23 descends the ball chute 50 and moves to the upper roller 39 as shown by a one-dot chain line in FIG. Contact. As indicated by a two-dot chain line in FIG. 2, the ball 23 is guided forward by the rotational force of the upper roller 39 and reaches between the upper roller 39 and the lower roller 41. Since the upper roller 39 and the lower roller 41 are rotating in opposite directions, the ball 23 is fired forward and blown through the opening 22a of the protective net 22 as shown by the broken line in FIG.

  At this time, the ratio of the peripheral speed of the lower roller 41 to the peripheral speed of the upper roller 39 is set to 1: 1.45 to 1.65, and the peripheral speed of the lower roller 41 is higher than the peripheral speed of the upper roller 39. Therefore, the fired ball 23 is caused to rotate backward to raise the ball 23 and to obtain a longer flight distance.

  Further, a launch angle adjusting member 35 is attached between the upper end portion of the support stand 15 and the frame member 25 of the pitching mechanism 24, and the tilt angle adjusting handle 30 is rotated as shown in FIGS. By changing so that the inclination angle θ becomes larger, the firing angle of the ball 23 can be increased, and the flight distance of the ball 23 can be increased.

The effects exhibited by the above embodiment will be described collectively below.
(1) In the pitching device 10 of this embodiment, since the battery 53 is detachably connected to the pitching motor 44, the charged battery 53 may be directly mounted on the pitching motor 44. No wiring work is required between the motor 44 and the battery 53. For this reason, the battery 53 can be easily charged with a household AC power supply of 100 V, and the throwing motor 44 can be driven by easily mounting the battery 53 on the throwing motor 44.

  Further, by supplying the ball 23 from the ball chute 50 between the upper roller 39 and the lower roller 41, the ball 23 is driven based on the upper roller 39 and the lower roller 41 which are driven by the throwing motor 44 and rotate in the reverse direction. Fired at a predetermined throwing speed. At this time, since the peripheral speed of the lower roller 41 is set to be larger than the peripheral speed of the upper roller 39, the ball 23 can be rotated backward to generate lift.

Therefore, the pitching device 10 of this embodiment is simple in configuration and easy to handle, and can obtain the flight distance of the ball 23 and the stability of the pitching.
(2) Since the ratio of the peripheral speed of the lower roller 41 to the peripheral speed of the upper roller 39 is set to 1: 1.45 to 1.65, a sufficient lift force can be applied to the ball 23, The flight distance of the ball 23 can be extended.

  (3) The pitching device 10 includes a firing angle adjusting member 35 between the support stand 15 and the pitching mechanism 24 for changing the firing angle of the ball 23 further. For this reason, by using the launch angle adjusting member 35, the launch angle of the ball 23 by the pitching mechanism 24 can be adjusted to a greater degree.

  (4) Since the upper roller 39 and the lower roller 41 are made of rubber (NBR) and the outer peripheral surfaces thereof are formed in the concave surfaces 39a and 41a having an arcuate cross section so as to hold the ball, the grip of the ball 23 The controllability of the ball 23 can be improved.

  (5) The ball chute 50 is configured such that the ball 23 thrown into the ball chute 50 first contacts the upper roller 39 and then is supplied between the upper roller 39 and the lower roller 41. For this reason, the ball 23 can be smoothly guided between the upper roller 39 and the lower roller 41, and the ball 23 can be fired in a stable state.

It should be noted that both the above embodiments can be modified and embodied as follows.
As the battery 53, a battery 53 having an output voltage such as 12V or 36V can be used.

  By changing the ratio between the peripheral speed of the upper roller 39 and the peripheral speed of the lower roller 41, the rotational speed of the throwing motor 44, the shape of the outer peripheral surface of the upper roller 39 or the lower roller 41, etc. Alternatively, it may be configured to change downward.

  It is also possible to increase the distance between the upper roller 39 and the lower roller 41 so that the hard baseball 23 can be used.

  DESCRIPTION OF SYMBOLS 10 ... Throwing apparatus, 11 ... Support body, 14 ... Support frame, 15 ... Support stand, 23 ... Ball, 24 ... Throwing mechanism, 35 ... Launch angle adjusting member, 39 ... Upper roller, 39a ... Concave surface, 41 ... Lower roller, 41a ... concave surface, 44 ... throwing motor, 50 ... ball chute, 53 ... battery.

Claims (5)

On the support body of the throwing device, an upper roller and a lower roller for rotating the balls in the reverse direction and supporting the ball are supported, and a ball chute for supplying the ball between the upper roller and the lower roller is provided. And a throwing motor for rotating the upper roller and the lower roller. A battery is detachably disposed in the throwing motor, and the peripheral speed of the lower roller is larger than the peripheral speed of the upper roller. The pitching device is characterized by being set as follows. The pitching device according to claim 1, wherein a ratio of a peripheral speed of the lower roller to a peripheral speed of the upper roller is set to 1: 1.45 to 1.65. A support body of the pitching device is configured by a support stand standing on a support frame, and a pitching mechanism including the upper roller, the lower roller, a ball chute, and a pitching motor on the support stand changes a ball launch angle. And a launch angle adjusting member for further changing the launch angle of the ball between the support stand and the pitching mechanism. 2. The pitching device according to 2. The upper roller and the lower roller are made of rubber, and their outer peripheral surfaces are formed in a concave surface having an arcuate cross section so as to hold the ball. The pitching device described in 1. The said ball chute is comprised so that the ball | bowl thrown into this ball chute may contact an upper roller, and it may be supplied between an upper roller and a lower roller continuously, The Claim 1 characterized by the above-mentioned. Item 5. The pitching device according to any one of items 4 to 9.

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