EP0541484A1 - Appareil permettant le tir ajusté de ballons - Google Patents

Appareil permettant le tir ajusté de ballons Download PDF

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Publication number
EP0541484A1
EP0541484A1 EP92810818A EP92810818A EP0541484A1 EP 0541484 A1 EP0541484 A1 EP 0541484A1 EP 92810818 A EP92810818 A EP 92810818A EP 92810818 A EP92810818 A EP 92810818A EP 0541484 A1 EP0541484 A1 EP 0541484A1
Authority
EP
European Patent Office
Prior art keywords
cam disc
striking
arm
flywheel
impact
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.)
Granted
Application number
EP92810818A
Other languages
German (de)
English (en)
Other versions
EP0541484B1 (fr
Inventor
Gernot Echner
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.)
JOSSI AG
Original Assignee
JOSSI AG
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 JOSSI AG filed Critical JOSSI AG
Publication of EP0541484A1 publication Critical patent/EP0541484A1/fr
Application granted granted Critical
Publication of EP0541484B1 publication Critical patent/EP0541484B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/002—Training appliances or apparatus for special sports for football

Definitions

  • the invention relates to a device for the directional ejection of balls according to the preamble of claim 1.
  • Such devices serve to enable the most realistic training possible for the players in ball games.
  • the trainer should be able to choose as different trajectories as possible in order to achieve a certain surprise effect.
  • the device is particularly suitable for shooting soccer balls, but can also be used for other balls, such as Handballs, rugby balls, squash balls, tennis balls, etc. can be used.
  • DE-A-26 51 335 has already disclosed a device of the same type in which a rotating cam is acted upon by a rotating cam.
  • the cam is arranged on a permanently rotating flywheel.
  • On the same axis of rotation as the cam there is also an idle disk against which the striking arm rests in the idle state.
  • the entire striking arm For the delivery of the ball, the entire striking arm must be moved parallel to its axis of rotation until it reaches the turning circle of the cam and is swung out suddenly by it. The swiveling movement and the stop of the ball take place below the axis of rotation of the striking arm.
  • the striking arm rotates together with the flywheel and forms a striking unit with it.
  • the striking arm is pivoted out of a neutral position into a striking position in which it strikes a ball.
  • the striking arm performs a circular movement about the axis of rotation of the flywheel and a pivoting movement about its own axis of rotation out.
  • the known devices are unsatisfactory, since in both cases the striking arm has to perform a relatively complicated movement in order to strike the ball. On the one hand, this affects the possibilities of varying the ball trajectory in the widest possible range.
  • the high acceleration forces that occur when moving the striking arm require complex technical means and the susceptibility to faults is relatively high.
  • the striking arm which rotates continuously with the flywheel, also harbors a certain risk of accident.
  • the striking arm Due to the slidably arranged on the flywheel cam plate, the striking arm can be stationary in its swivel plane.
  • the mechanical stress on the striking arm is relatively low since it is only accelerated in its swivel plane. It also enables the ball to be struck very precisely.
  • the striking arm is particularly advantageously a double lever arm which can be pivoted in a vertical swivel plane, one end of which carries a striking element and the other end of which carries an engagement member for scanning the impact cam disc.
  • the engagement member is advantageously designed as a roller that rolls on the impact cam.
  • the striking arm is biased into a starting position by means of a spring, in which the engaging member lies in the circular path of the impact cam disc moved into the impact position.
  • adjustable shock absorbers can be arranged on both ends of the double lever arm. On the one hand, these prevent the lever from swinging back in both directions, and they allow the maximum possible arc movement of the striking arm to be adjusted within certain limits.
  • the impact cam disc is particularly advantageously arranged at the end of a push rod whose axis of movement crosses the axis of rotation and which is tensioned into the rest position under spring preload.
  • the centrifugal forces act in the axial direction of the push rod and they can be used to hold the impact cam in the rest position.
  • the impact cam is particularly easy to operate if the push rod carries an engagement element which interacts in the flywheel sector with an insertable and disengageable slide cam, in which the impact cam acts on the striking arm, the push rod against the spring force in the striking position when the sliding cam is engaged is movable.
  • the rotary movement of the flywheel can be used particularly easily to actuate the rotating cam disc.
  • the flywheel is designed as a hollow shaft in which the push rod is guided.
  • the inertia of the flywheel can be changed by the wall thickness of the hollow shaft and by a suitable choice of material.
  • the hollow shaft serves in the simplest way as a bearing for the push rod with the impact cam.
  • a round disk could also serve as a flywheel, on which the push rod is guided by other means.
  • a very precise control of the impact cam can be achieved if the control means have a clutch which is connected to the rotary drive of the flywheel and which engages and disengages the sliding cam disc in a predeterminable switching position.
  • the clutch can have a clutch finger which, in the engaged state, makes a rotation through 360 °, in the course of which it engages the sliding cam disk, the sliding cam disk being lockable in the engaged position with a locking element and the clutch finger being disengaged before the completion of a revolution the sliding cam releases the locking element again.
  • Exactly one movement can be transmitted via the clutch, which is driven synchronously with the flywheel, and actuates the sliding cam disc in the correct relative position. This transmission works reliably even at high speeds of the flywheel.
  • the clutch is preferably a spring band clutch, which transmits only a single rotary movement when the clutch is actuated.
  • the entire device essentially consists of a chassis 9 with wheels 14 and with a support foot 13.
  • a housing 8 with a cover plate 10 is arranged on the chassis.
  • the housing encloses the rotating flywheel, so that only the striking bar 21 of the striking arm protrudes from the cover plate 10.
  • a cross slide 25 is arranged on the cover plate 10, on which a ball holder 26 together with a storage rack 11 is arranged to be displaceable in two directions. In this way, a ball 29 to be fired can be moved in the ball holder 26 in the pivoting plane closer to the striker 21 or further away from it.
  • the ball can also be shifted somewhat sideways from the swivel plane, so that the ball receives a twist on one or the other side when struck.
  • a pointer 35 which moves together with the cross slide 25, shows the respective position of the cross slide and thus the expected ball trajectory on a scale 34 on the cover plate 10.
  • the cross slide is preferably driven by electric linear motors and shifted with the aid of a control stick 36.
  • a drive motor 12 is also arranged on the chassis 9, an internal combustion engine, for example a lawn mower motor, being used particularly advantageously.
  • the device according to the invention allows the flywheel to be driven at a constant speed.
  • the effective impact energy is namely influenced with the help of the adjustable ball holder 26 and not via the speed of the flywheel, as is the case with the known ones Devices was common.
  • a change in the speed of the flywheel requires the use of controllable electric motors, which is impractical and dangerous for a mobile device.
  • relatively strong and therefore heavy electric motors would have to be used in order to be able to change the speed of the inertial flywheel quickly.
  • internal combustion engines can be operated independently of the mains and are relatively light and not prone to failure.
  • the flywheel 1 which is mounted on a shaft 3 such that it can be driven in rotation about the axis of rotation 31 in the housing 8, serves as an energy store for generating the necessary impact energy.
  • On the shaft 3 is a pulley 2, on which it is driven by the motor 12 with a belt.
  • the flywheel 1 essentially consists of a hollow shaft 4 in which a push rod 5 is slidably mounted. The push rod crosses the axis of rotation 31. At one end of the push rod an impact cam disk 7 is attached, which protrudes from the hollow shaft 4.
  • an engagement element 6 in the form of a sliding roller is fastened to the push rod, which likewise protrudes from the hollow shaft 4 through a slot.
  • the function of this sliding roller will be explained later.
  • the push rod 5 With the help of a compression spring 33 in the hollow shaft 4, the push rod 5 is biased in the direction of arrow a. This position corresponds to the rest position in which the impact cam 7 does not act on the impact arm 20.
  • FIG. 3 shows the striking arm 20 which is mounted in the housing 8 or possibly also on the cover plate 10 on a swivel joint 30.
  • the beater arm is designed as a slightly angled double lever which carries the beater bar 21 on the upper part.
  • a roller 22 is rotatably mounted.
  • a tension spring 32 which acts on the upper lever, tensions the striking arm in a starting position, in which it adjustable shock absorber 28 is present.
  • the ball holder 26 is arranged in the vertical swivel plane of the blow bar 21 such that a ball 29 lies in the swivel range of the blow bar. Brushes 27 on the ball holder ensure that the ball is held in the ball holder with as little resistance as possible.
  • the hollow shaft 4 rotates in a horizontal plane in the direction of rotation b.
  • the impact cam 7 As long as the impact cam 7 is in the rest position shown in FIG. 2, it moves past the roller 22 on the outside without touching it.
  • the impact cam disc As soon as the impact cam disc is moved into the impact position via the push rod 5, its circular path crosses the roller 22 and the impact arm 20 is pivoted in the direction of arrow c.
  • the roller 22 rolls on the ramp-like impact cam disc until the impact arm 20 has reached the end position shown in broken lines.
  • the tension spring 32 is tensioned and then pulls the striking arm back into the starting position. In the end position, the lower lever arm strikes the adjustable shock absorber 24.
  • the vertical firing angle of the ball can be changed by adjusting the inclination of the entire device, for example by adjusting the height of the base 13 (FIG. 1). Together with the adjustability of the ball holder on the cross slide 25, a wide variety of different trajectories are possible in this way, without the expected trajectory of the next for the player to be trained Balles is recognizable.
  • the speed of the flywheel always remains approximately constant at 600 to 700 revolutions per minute and it does not have to be specially monitored or regulated.
  • the blow bar 21 is rounded on the side in the upper, curved part.
  • a spring band coupling 15 is arranged on the cover plate 10 and is driven synchronously by the shaft 3 of the flywheel 1 via a toothed belt 23.
  • the clutch 15 carries a clutch finger 16, the turning radius of which is indicated in FIG. 6 and which makes one revolution in the direction of the arrow d when the clutch is actuated together with the flywheel 1.
  • a sliding cam 17 is articulated on a bearing axis 18.
  • the sliding cam has a pressure pin 38 at its free end and is biased into a disengaged position by means of a spring 37.
  • the sliding cam disk 17 moves on the level of the sliding roller 6.
  • the pressure pin 38 lies in the effective area of the clutch finger 16, so that when the clutch finger 16 is rotated, the sliding cam disk 17 is indented outward in the direction of the arrow e.
  • a drop lever 39 is also articulated on a joint 41, on the free end of which a holding pin 19 is fastened.
  • a roller 40 is attached to the drop lever in such a way that it also lies in the range of rotation of the clutch finger 16.
  • the holding pin 19 is in the rest position on the sliding cam 17. It only drops when the sliding cam is deflected. Then, however, it serves as a locking element and prevents the sliding cam disk 17 from pivoting back.
  • the drop lever 39 is raised in the direction of arrow f and the locking of the slide cam 17 is released again.
  • the switching pulse is stored in an electronic control until the flywheel or the hollow shaft 4 has reached a certain relative position, for example position X in FIG. 5. The exact position is queried via an initiator. If the hollow shaft 4 has reached the position X, the clutch 15 is activated by an electrical pulse, the clutch finger 16 making one revolution synchronously with the hollow shaft 4. The clutch is then disengaged again. The coupling finger 16 now pushes the sliding cam disk 17 outward against the force of the spring 37 into the position shown in broken lines in FIG. At the same time, the holding pin 19 locks the sliding cam in this position.
  • the hollow shaft 4 rotates further during this process and the sliding roller 6 runs on the sliding cam disk 17 and pulls the hollow shaft 5 with the impact cam disk 7 in the direction of arrow g inward against the force of the compression spring 33.
  • the already described deflection of the striking arm 20 takes place.
  • the locking In order to prevent the locked sliding cam disk 17 from triggering a stroke even during the subsequent rotation of the hollow shaft 4, the locking must be released beforehand. This is done by turning the coupling finger 16 further, which pushes the roller 40 upward shortly before reaching its end position and thus releases the holding pin 19.
  • the force of the spring 37 now pushes the sliding cam disk 17 back into the neutral starting position and the sliding roller 6 rotates past the sliding cam disk without being displaced.
  • the whole process takes place within fractions seconds.
  • the clutch 15 with the clutch finger 16, however, permits extremely precise control of the movement sequences.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Transmission Devices (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Surgical Instruments (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Nozzles (AREA)
EP92810818A 1991-11-08 1992-10-23 Appareil permettant le tir ajusté de ballons Expired - Lifetime EP0541484B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3264/91 1991-11-08
CH326491 1991-11-08

Publications (2)

Publication Number Publication Date
EP0541484A1 true EP0541484A1 (fr) 1993-05-12
EP0541484B1 EP0541484B1 (fr) 1995-03-22

Family

ID=4252220

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810818A Expired - Lifetime EP0541484B1 (fr) 1991-11-08 1992-10-23 Appareil permettant le tir ajusté de ballons

Country Status (3)

Country Link
EP (1) EP0541484B1 (fr)
AT (1) ATE120095T1 (fr)
DE (1) DE59201720D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4207454A1 (de) * 1992-02-01 1995-03-09 Struck Gustav 7 m Rumps bums Schlitten
DE19719086A1 (de) * 1997-04-30 1997-11-20 Rainer Beyer Trainingsgerät für den Fußballsport -Fußballschleuder-
WO2006081702A1 (fr) * 2005-02-04 2006-08-10 Chi Cheung Ng Appareil de projection de ballons
CN109204819A (zh) * 2018-11-16 2019-01-15 长沙中部翼天智能装备科技有限公司 无人机连续抛投器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111298417B (zh) * 2018-01-16 2021-07-30 丁武轩 一种体育教学用篮球抛投设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2651335A1 (de) * 1976-12-10 1977-06-23 Kurt Scheiwiller Verfahren und geraet zum gerichteten beschleunigen von baellen, insbesondere fussbaellen
WO1986005109A1 (fr) * 1985-03-01 1986-09-12 Kurt Scheiwiller Procede et dispositif permettant le tir ajuste de ballons de football

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2651335A1 (de) * 1976-12-10 1977-06-23 Kurt Scheiwiller Verfahren und geraet zum gerichteten beschleunigen von baellen, insbesondere fussbaellen
WO1986005109A1 (fr) * 1985-03-01 1986-09-12 Kurt Scheiwiller Procede et dispositif permettant le tir ajuste de ballons de football

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4207454A1 (de) * 1992-02-01 1995-03-09 Struck Gustav 7 m Rumps bums Schlitten
DE19719086A1 (de) * 1997-04-30 1997-11-20 Rainer Beyer Trainingsgerät für den Fußballsport -Fußballschleuder-
DE19719086B4 (de) * 1997-04-30 2005-08-25 Rainer Beyer Trainingsgerät für den Fußballsport -Fußballschleuder-
WO2006081702A1 (fr) * 2005-02-04 2006-08-10 Chi Cheung Ng Appareil de projection de ballons
CN109204819A (zh) * 2018-11-16 2019-01-15 长沙中部翼天智能装备科技有限公司 无人机连续抛投器
CN109204819B (zh) * 2018-11-16 2024-01-23 长沙中部翼天智能装备科技有限公司 无人机连续抛投器

Also Published As

Publication number Publication date
ATE120095T1 (de) 1995-04-15
EP0541484B1 (fr) 1995-03-22
DE59201720D1 (de) 1995-04-27

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