EP0503176A1 - Tischtennisball-Wurfmaschine - Google Patents

Tischtennisball-Wurfmaschine Download PDF

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Publication number
EP0503176A1
EP0503176A1 EP91302058A EP91302058A EP0503176A1 EP 0503176 A1 EP0503176 A1 EP 0503176A1 EP 91302058 A EP91302058 A EP 91302058A EP 91302058 A EP91302058 A EP 91302058A EP 0503176 A1 EP0503176 A1 EP 0503176A1
Authority
EP
European Patent Office
Prior art keywords
ball
ping
pipe
disposed
pong
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP91302058A
Other languages
English (en)
French (fr)
Inventor
Wei Ming Lien
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LIEN POLYMER ENTERPRISE CO Ltd
Original Assignee
LIEN POLYMER ENTERPRISE CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LIEN POLYMER ENTERPRISE CO Ltd filed Critical LIEN POLYMER ENTERPRISE CO Ltd
Priority to EP91302058A priority Critical patent/EP0503176A1/de
Publication of EP0503176A1 publication Critical patent/EP0503176A1/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/40—Stationarily-arranged devices for projecting balls or other bodies
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
    • A63B2102/16—Table tennis

Definitions

  • the present invention relates to a ping-pong ball shooter.
  • a convntional ping-pong ball shooter employs a ball-striking swinging mechanism with a torque spring to achieve the object of shooting balls.
  • the shooting path is too monotonous without change so that the user or trainee will feel bored and can not obtain real game experience, and will even feel that such ping-pong shooter is useless.
  • Some other types of conventional ping-pong ball shooters employ complex mechanically controlling device to achieve various functions. However, such device must be operated by another person and is composed of a lot of components and requires long assembling time so that the cost thereof is too high to met economical principle and such device can not be mass manufactured and widely used.
  • the ping-pong ball shooter of this invention includes an abruptly returning mechanism, a rotating mechanism, a ball feeding/regaining device, an eye ball reciprocating mechanism, and a speed changing device of a reciprocating arm, wherein the rotating mechanism includes a motor 2, a small gear 1driven thereby and a large gear 3 which is driven by the small gear 1 and in which a ball pipe 26 and a torque spring seat are disposed.
  • a torque spring 4 is loosely disposed on a pin 5 with one end longer and the other end shoter, whereby when the large gear 3 rotates, the torque spring 4 rotates 360 degrees along therewith.
  • the abruptly returning mechanism of the reciprocating arm includes a DC motor 19, driving gear 17, driven gear 16, crank pin 15, pivot pin 14, rocking arm 18, and a striking head 21 with an engaging pin 21, wherein when DC motor 19 rotates to make the driving gear 17 rotarily drive the driven gear 16, the crank pin 15 thus rotates along therewith and moves within a slot 181 of the rocking arm 18. Because the rocking arm 18 is fixed by the pivot pin 14, therefore it can only swing within a certain angle about the pivot pin 14. As a consequence, the engaging pin 20 can slide within a slot 182 of the rocking arm with the striking head 21 horizontally sliding in the ball pipe 26.
  • the rocking arm 18 rocks to move the striking head 21 forward so as to push the ball 22 toward the torque spring 4 to bias the same outward.
  • the torque spring 4 will be restored into its original position to abruptly shoot out the ball 22.
  • the speed of shot ball is abjusted in such a manner that the crank pin 15 is located to achieve different rotating angles, making the advancing rotating angle of the rocking arm 18 larger than the backing rotating angle thereof, ie. the advancing stroke is slow and the backing stroke is fast.
  • the DC motor 19 serves as a power source and can be adjusted to achieve various speeds of shot ball as required.
  • Figs. 1, 2, and 3 wherein the strength of shooting force exerted on the ball 22 is primarily controlled by means of changing the tension of the torque spring 4, ie. changing the angle of the torque sping 4.
  • One end of the torque spring 4 is mounted on a swinging lever 6 which is loosely mounted on a pivot pin 7.
  • Two sets of the torque springs 4 are symmetrically fixed on the larger gear 3 to rotate along therewith.
  • a rotating pushing disk 8 is also disposed on the large gear 3 to reciprocally slide and rotate whereby when the rotating pushing disk 8 moves to push the swinging lever 6 and change its angle, the angle of the torque spring 4 is thus also changed to achieve different tension so as to change the strength of shooting force for the ball 22.
  • the elements for reciprocating the rotating pushing disk 8 are a motor 13, a small gear 12, a large gear 11, a steel ball 10 and a slide guide 9, wherein the large gear 11 is provided with a cam 111, and the steel ball 10 is disposed betweem the cam 111 and slide guide 9 so that when the large gear rotates, the cam 111 rotates along therewith to push the slide guide back and forth, forcing the rotating pushing disk 8 to move.
  • the cam 111 rotates through 360 degrees wherein from zero degree to 90 degree, ie. from the lowest position to the highest position, the torque spring 4 is compressed to a most tensional state and the ball can be shot out most strongly, and from 90 degree to 180 degree, ie. from the highest position to the lowest position, the torque spring 4 is released to a free state and the shooting force is weakest. Accordingly, there are two up and down circles in one revolution of the cam 111.
  • the slide guide 9 is formed with a projection so that, when within zero degree to 90 degree, the proection can touch a fine switch 24 to power on an indicator lamp for indicating the strength of shooting force. Because the slide guide 9 contacts with the rotating pushing disk 8 in a sliding frictional manner, therefore, when the large gear 11 is not rotated with the cam 111 staying in its original position, the slide guide 9 also stays where it is with the rotating pushing disk 8 located at a fixed position. However, due to the rotation of the large gear 3, although the rotating pushing disk 8 stays at the fixed position, the swinging lever 6 is urged to compress the torque spring 4 into a certain same tensional state, making the ball shooting force identical and the indicator lamp stays in a fixed point. If the motor 13 starts to rotate, then the strength of ball shooting force is also changed to achieve shooting force adjustment.
  • FIG. 4 shows the eye ball reciprocating mechanism of this invention wherein in a spherical structure 28 is disposed a seat member 41 having a slide slot 42 engaging with a fixing pin 40 formed on a rotary eye ball member 39, whereby the rotary eye ball member 39 can horizontally or vertically rotate inside and about the shperical structure 28 according to the slider-crank mechanism.
  • crank pin 33 is disposed on a transmission gear 34 of a horizontal motor 36 which is mounted on the rotary eye ball member 39 whereby the crank pin 33 can move within a guider 30.
  • a ball pin 35 is disposed on the rotary eye ball member 39, which move within a slot 26 of the guider 30 and is limited by the spherical structure 28, ie. the eye ball member 39 can only move horizontally relatively to the guider 30.
  • another crank pin 38 is disposed on a transmission gear 32 of a vertical motor 25, which can move within a fixing support 37 of the spherical structure 28.
  • the eye ball member 39 is urged to swing, ie., the guider 30 will drive the ball pin 35 to force the eye ball member 39 to vertically swing along with the guider 30 about the center of the spherical structure 28. Therefore, the crank pin 38 will move within the slide slot 31 back and forth once in one revolution of the transmission gear 32, ie., the eye ball member 39 will move up and down once.
  • the two sets of four linkage mechanism can move independently from each other to form only up and down or left and right movement, or can move together to form irregular variation so that the shot out balls will be scattered within a sector area of the ping-pong table and the dropping points of the balls can be altered regularly or irregularly.
  • FIG. 7 Please refer to Fig. 7 wherein the ball-feeding operation is shown.
  • a hopper slide way 47 and a boll-feeding motor 45 are disposed on a ball collector 46.
  • a sleeve ball bag 43 is disposed at the shaft of the motor 45.
  • One end of the ball bag 43 is closed, serving as a driving side and the other end thereof is open and inserted into the slide way 47, and three sets of blades 44 as shown in Fig. 8 and openings are disposed therein and inside a bottle-shaped fixed ball pipe 48 as shown in Figs. 8 and 9.
  • a movable ball pipe 49 is provided with a trumpet open end 50 and a T-shaped pipe 52 and spring 51 are fixed on the rotary eye ball member 29.
  • FIG. 9 shows the ball-feeding path, wherein when the ball is regained into the ball collector 46 and slides into the sleeve ball bag 43 through the hopper slide way 47, and when the sleeve ball bag 43 rotates, due to centrifugal force, the ball 22 will slide into the bottom of the ball pipe 48 through the opening.
  • the blades 44 By means of the blades 44, the ball 22 is pushed upward along the ball pipe 48 into the movable ball pipe 49 and goes through the trumpet open end 50 into the T-shaped pipe 52 located above the movable ball pipe 49 to touch a spring 51 and freely drop into the ready ball tunnel for shooting.
  • the ball 22 will press the spring 51 to go upward through a ball-spilling pipe and slide back to the sleeve ball bag 43.
  • the shot out ball is struck back by a player to be collected by a network into the ball collector 46. This pertains to prior art and will not be described in details.
  • a leaf spring 53 is disposed on left side of the ball pipe 48 to restrict the ball 22 above the ball pipe 48 with-out sliding back to the sleeve ball bag 43 to faciltate the rotation of the blades 44.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Toys (AREA)
EP91302058A 1991-03-12 1991-03-12 Tischtennisball-Wurfmaschine Withdrawn EP0503176A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP91302058A EP0503176A1 (de) 1991-03-12 1991-03-12 Tischtennisball-Wurfmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91302058A EP0503176A1 (de) 1991-03-12 1991-03-12 Tischtennisball-Wurfmaschine

Publications (1)

Publication Number Publication Date
EP0503176A1 true EP0503176A1 (de) 1992-09-16

Family

ID=8208215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91302058A Withdrawn EP0503176A1 (de) 1991-03-12 1991-03-12 Tischtennisball-Wurfmaschine

Country Status (1)

Country Link
EP (1) EP0503176A1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9618369B2 (en) 2008-08-26 2017-04-11 The University Court Of The University Of Glasgow Uses of electromagnetic interference patterns
KR200484614Y1 (ko) * 2016-09-08 2017-09-29 김병진 투척구 제공장치
CN108371803A (zh) * 2018-03-31 2018-08-07 平湖市酷风文体用品有限公司 一种网球发球机中发球通道的水平摆动机构
CN108635804A (zh) * 2018-06-13 2018-10-12 河南职业技术学院 训练用羽毛球发射装置
US10252142B2 (en) 2014-03-05 2019-04-09 Newgy Industries, Inc. Table tennis robot with improved serving head movement
CN110033686A (zh) * 2019-04-30 2019-07-19 洛阳理工学院 一种基于计算机的自动演示控制装置
CN114344852A (zh) * 2021-12-23 2022-04-15 新乡医学院 一种训练场用羽毛球半自动收集装置
CN114534209A (zh) * 2022-03-02 2022-05-27 郑州大学体育学院 一种乒乓球检测装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH521764A (de) * 1970-04-01 1972-04-30 Rohner Armin Tennisball-Wurfmaschine
US3807379A (en) * 1972-04-07 1974-04-30 H Vodinh Spring type ball projecting device with programming control means
GB2173112A (en) * 1985-04-03 1986-10-08 Gary Gatchel Automatic table tennis ball serving device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH521764A (de) * 1970-04-01 1972-04-30 Rohner Armin Tennisball-Wurfmaschine
US3807379A (en) * 1972-04-07 1974-04-30 H Vodinh Spring type ball projecting device with programming control means
GB2173112A (en) * 1985-04-03 1986-10-08 Gary Gatchel Automatic table tennis ball serving device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9618369B2 (en) 2008-08-26 2017-04-11 The University Court Of The University Of Glasgow Uses of electromagnetic interference patterns
US10252142B2 (en) 2014-03-05 2019-04-09 Newgy Industries, Inc. Table tennis robot with improved serving head movement
EP3113853B1 (de) * 2014-03-05 2019-09-04 Newgy Industries, Inc. Tischtennisroboter mit verbesserter kopfbewegung beim aufschlag
KR200484614Y1 (ko) * 2016-09-08 2017-09-29 김병진 투척구 제공장치
CN108371803A (zh) * 2018-03-31 2018-08-07 平湖市酷风文体用品有限公司 一种网球发球机中发球通道的水平摆动机构
CN108635804A (zh) * 2018-06-13 2018-10-12 河南职业技术学院 训练用羽毛球发射装置
CN108635804B (zh) * 2018-06-13 2019-08-23 河南职业技术学院 训练用羽毛球发射装置
CN110033686A (zh) * 2019-04-30 2019-07-19 洛阳理工学院 一种基于计算机的自动演示控制装置
CN110033686B (zh) * 2019-04-30 2020-11-17 洛阳理工学院 一种自动演示控制装置
CN114344852A (zh) * 2021-12-23 2022-04-15 新乡医学院 一种训练场用羽毛球半自动收集装置
CN114344852B (zh) * 2021-12-23 2022-10-14 新乡医学院 一种训练场用羽毛球半自动收集装置
CN114534209A (zh) * 2022-03-02 2022-05-27 郑州大学体育学院 一种乒乓球检测装置

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