EP0052904A1 - Volleyball-Wurfvorrichtung - Google Patents

Volleyball-Wurfvorrichtung Download PDF

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Publication number
EP0052904A1
EP0052904A1 EP81201270A EP81201270A EP0052904A1 EP 0052904 A1 EP0052904 A1 EP 0052904A1 EP 81201270 A EP81201270 A EP 81201270A EP 81201270 A EP81201270 A EP 81201270A EP 0052904 A1 EP0052904 A1 EP 0052904A1
Authority
EP
European Patent Office
Prior art keywords
pulley
balloon
lever
cable
propulsion
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
EP81201270A
Other languages
English (en)
French (fr)
Other versions
EP0052904B1 (de
Inventor
Francis Fraipont
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT81201270T priority Critical patent/ATE12185T1/de
Publication of EP0052904A1 publication Critical patent/EP0052904A1/de
Application granted granted Critical
Publication of EP0052904B1 publication Critical patent/EP0052904B1/de
Expired 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
    • A63B69/407—Stationarily-arranged devices for projecting balls or other bodies with spring-loaded propelling means
    • A63B69/408—Stationarily-arranged devices for projecting balls or other bodies with spring-loaded propelling means with rotating propelling arm

Definitions

  • the present invention relates to the volleyball game and relates to an automatic ball-throwing machine adapted to this game.
  • a ball thrower in volleyball must be adapted to the pass leading to the smash or the bell pass, which must be a parabola higher or lower and more or less open described by the ball. Said pass must most often be parallel to the plane of the net and about 50 cm from it. The pass must in any case exceed the height of the net, which is 2.24 m for women and 2.43 m for men.
  • the pitcher must also be adapted to the service, which is struck behind the bottom line.
  • the ball must travel 9 m, pass over the net without touching it and fall into the opponent's field without however exceeding the limits located 9 m from the net, for a total of 18 m to 20 m from a tighter shot.
  • U.S. patent application No. 016321 is a machine for the practice of volleyball, consisting of a device for the automatic projection of balls.
  • This device is actuated by a motor and comprises a cam rotated by the motor and acting on a striking lever provided with a return spring forcibly returning said lever to bring it into contact with a balloon and eject it.
  • a volleyball ball thrower produced according to the invention is of the type comprising a propulsion mechanism associated with a striking lever.
  • An object of the invention is to make such a machine, so that it can be actuated using a reduced force and preferably, using only human force.
  • the high voltage electric motor is to be excluded since the normal handling of such a machine, sometimes carried out in humidity, is done by laymen and that cables can be a clutter in the feet of players.
  • Also to be excluded is the internal combustion engine which cannot be used in a closed room, where volleyball matches are often played, due to pollution.
  • Another object of the invention is to make such a machine capable of a laterally and forwards orientable shooting and adjustable in power.
  • the volleyball ball thrower comprising a propulsion mechanism associated with a striking lever
  • said mechanism contains or one of the propulsion springs, the arming device of which consists of a cable , preferably made of steel, fixed to the striking lever and the end opposite to said striking lever being mounted on a controlled pulley, said pulley being provided with means for its automatic release at the end of the winding of the cable, in order to cause by the unwinding of said cable automatic expansion of the propulsion spring.
  • the propulsion mechanism is integral with an arm carrying a circular cell intended to receive and center the ball for shooting, and the striking lever carries at its free end a shock mass centered with respect to the socket.
  • the balloon launcher comprises an automatic supply device, from an airlock or supply store forming part of the launcher, comprising a pneumatic or electric double-acting blocking member controlled by the lever. striking and therefore by shooting, an organ which during movement towards the top of the lever, on the one hand, launches the first waiting balloon in the shooting cell and, on the other hand, admits a second balloon in said cell while preventing a third balloon from descending out of the balloon store as long as we don't continue pedaling.
  • FIG. 1 a view of a balloon launcher according to the faired invention. It includes a tube frame 1, four crutches wheels 2 all orientable on 360 0 for the mobility of the machine. Each wheel has a brake 3 which allows the machine to be fixed in the firing position, a brake which is controlled on each wheel by a pedal 4 attached to the wheel.
  • the machine shown is actuated using a reduced force and preferably the human engine.
  • the actuation mode chosen here is a mechanism moved by the feet of a player or another person in charge of operating the machine.
  • An adjustable seat 5 is provided on the chassis and a crankset 6 drives a pinion 7.
  • the ejector mechanism and the striking lever are enclosed in a fairing 8 connected to an airlock 9, by which the launcher is connected to a supply store 10 for balloons.
  • This store 10 is removable and interchangeable, it is carried by the chassis and forms therewith a compact assembly.
  • the propellant mechanism comprises a bracket 11 formed of two parallel brackets held at a distance by spacers, therefore integral with each other, and integral with a cylindrical axis 12 rotating in a cylindrical tube 13 welded to the chassis 1.
  • the axis 12 is axially pierced with a hole 14 allowing the passage of the cable 15 actuating the propellant mechanism.
  • the same axis 12 is braked by the action of Belleville washers 16 pressing a flange 17 via a nut 18 pulling this axis against the wall of the tube 13, where there is friction.
  • the brake is adjustable on demand and allows the controlled tilting of the stem and therefore of the whole propulsion system to the left or to the right,
  • the cable 15 actuating the propellant mechanism passes over a deflection pulley 19 held on the stem by an axis 20, around which it rotates freely.
  • This cable 15 actuates the striking lever or arm 21 which pivots about an axis 22 forming an articulation with the bracket 11.
  • This cable 15 is fixed to the striking arm by means of an eccentric disc 23 rotating freely on the axis 24 of the impact arm 21.
  • the connection of the cable 15 and the eccentric disc 23 is easily done by the introduction of the counterweight 25 into a hole 26 in the eccentric disc 23, this in order to possibly allow the rapid replacement of said cable 15.
  • An identical weight, attached to the other end of the cable, allows instant connection to the triggering device for the shot ( Figure 6).
  • This cable 15 pulling the striking lever down lengthens the tension springs 27 hooked, on the one hand, to the striking lever 21 by means of lug spouts 28 freely rotating on the axis 24 and , on the other hand, by means of identical nozzles on the upper axis 29 of the bracket 11.
  • the propulsion cable 15 therefore acts directly on the tension springs 27 which it can either bandage or let go, thereby causing the ball to strike.
  • This propulsion cable 15 preferably made of steel, on the side triggering the firing device is wound on a pulley 30 mounted on the shaft 31 of the pinion 7 driven by the crankset 6.
  • This pulley 30 is mad on its shaft and can therefore s axially eradicate from its position, it has a cam 32 coming into contact with a fixed wedge 33 placed on the shaft.
  • a spring 34 enveloping the axis 31 pushes the pulley back to its exact place on the axis, so that it is ready to start a cycle again.
  • a finger 30 ' which forces the pulley to move away, bears on a bell cam 35, concentric with the shaft 31.
  • This bell cam is capable of rotating in the opposite direction to the winding of the cable up to various positions, which can be maintained using a disc 36 provided with notches or holes from 5 ° to 5 ° or less.
  • This disc 36 forming part of the arming device fixed to the chassis 1 under the seat 5, is associated with an index 37 secured to the bell cam 35. By its position under the seat the adjustment of the power of the shot is at the range of the person in charge of operating the machine.
  • the entire arming device is mounted in one piece on the chassis 1 by means of two screws 1 'and, therefore, can be easily removed from the chassis for, optionally, a standard exchange.
  • the inclination of the propellant mechanism with the striking linkage allows an adjustable shot. This inclination can vary laterally to the left and to the right over 180 °. It is controlled directly from the operating seat by a steering wheel 38, which communicates the movement of rotation to the left or to the right to the pivot axis of the propulsion mechanism 12 by means of a system of two pulleys 39 and 40 interconnected by a toothed belt 41.
  • the large pulley 39 is secured to the pivot axis 12 itself secured to the propellant.
  • the steering wheel 38 communicates the movement by a rod 42, the rotation of which can be blocked by the operation of a locking lever 43 acting on a yoke 44 secured to the chassis 1.
  • This blocking ensures the regularity of the shot in a given position.
  • the correct inclination of the steering wheel relative to the user is ensured by a support rod 45 secured to both the chassis 1 and the yoke 44.
  • a universal joint 46 connects the steering wheel rod 38 to the axis 47 of the small pulley 40 controlling the large pulley 39 by the action of the toothed belt 41, as said above.
  • the tension of this belt is adjusted by a console 48 adjustable in height and integral with a nozzle 49, in which the axis 47 of the small pulley 40 rotates freely.
  • the fire is automatic. We arm the device, that is to say that we band the spring by winding the cable on the pulley by actuating the pedal. As will be explained later, at this time, a balloon A falls into its cell.
  • the cable can unwind, which causes the spring to relax, and the impact mass 50 strikes the ball in its socket 51, the ball which is projected outwards according to arrow X.
  • the release point of the trainer is closer to the start of the winding.
  • the winding is started while the feeler finger 30 'is already engaged on the slope of the cam 32, and this at various locations corresponding to the required firing power.
  • the bell cam 35 is rotated in the opposite direction to the winding of the cable and the cam is maintained in one or the other of these positions using the disc device 36 described above.
  • Balloon feeding is automatic and controlled by firing.
  • the airlock 9 receiving the balloons from the magazine 10 is provided with a double-acting blocking member projecting in front of the balloons.
  • This blocking member consists of a piston rod 52 of a small cylinder supplied with compressed air by the piston 53 of a large cylinder, joined together by a flexible pipe 54.
  • the cable 15 having pulled the striking lever to the chosen limit, releases the latter which in this case strikes in a vacuum because no balloon has yet been admitted into the cell 51.
  • the striking arm actuates the piston 53, compresses the air inside of it, and this air drives the piston rod 52 upwards through the pipe 54.
  • This rod strikes, a little behind its South Pole, the first balloon admitted into the airlock. This balloon falls by a flexible tube 56 into the cell 51.
  • the piston rod 52 remains extended and prevents the arrival of a new balloon in the airlock 9 o If we continue to pedal, this rod releases the second balloon, which takes place in the airlock 9.
  • the striking arm 21 firstly touches the first balloon on hold and centered in the shooting cell 51. This first balloon leaves.
  • the striking lever secondly touches the end of the rod of the large piston 53, which again actuates the piston rod 52, and the second balloon is admitted into the firing cell 51.
  • the cycle begins again as long as 'there are balloons in the store.
  • the store can hold fifteen to twenty-five balloons; it can be of the horizontal, vertical, cylindrical, helical, multi-cylinder type, or even consist of a windsock mounted on an orientable bracket and connected by a flexible pipe to the airlock 9 but these embodiments must always be inclined towards said airlock by approximately 10 °.
  • the loading is done by the rear, that is to say opposite the shooting cell 51 and, therefore, the loading never hinders the evolution of the players, nor the shooting.
  • a balloon launcher produced according to the invention is easy to handle and not dangerous, even for young pupils, girls and boys. It is maneuverable by hand, actuated using a reduced force and manufacturing using the maximum of already marketed manufactures.
  • Such a launcher is capable of throwing a 250 gr ball. with a diameter of 21 cm in very short shooting, pinched or enlarged parabola, or in taut shooting, maximum 18 m to 20 m, thanks to the adjustment of the shooting power. Its shot is orientable laterally and forwards thanks to the tilt adjustment. You can increase the power of the shot by increasing the power of the springs.
  • the device For short pass smash training, the shot must be taken very close to the net.
  • the device can be placed 50 cm from the plane of the net with its longitudinal axis perpendicular or slightly oblique to the net.
  • the device For training in receiving services (long and taut bales) the device is placed at the bottom line of the field with its longitudinal axis more or less parallel to this line. In this way, by means of a slight displacement of its major axis (swivel wheels), the machine can pull in all the ground beyond the net. It is also used for numerous passing and play training sessions as well as test the player recovery technique.
  • This device (not shown) consists of a sort of funnel, consisting of a metal frame covered with a nylon net to prevent the rebound of the balloons thrown therein, and is placed directly above the machine.
  • the funnel is extended by a flexible gutter bringing the balloons from the rear into the launcher store. Everything can be rotated 360 °.
  • the chassis could be circular, have only three steerable wheels and be designed in such a way that it contains the propellant mechanism with its striking lever, the firing trigger device, the orientation system and the feeding system.
  • a launcher could also be driven by its own motive power, such as an electric motor on a 12-volt battery.
  • the double-acting blocking device of the balloon supply system could be triggered electrically by this same battery.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Toys (AREA)
  • Flexible Shafts (AREA)
  • Luminescent Compositions (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP81201270A 1980-11-24 1981-11-17 Volleyball-Wurfvorrichtung Expired EP0052904B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81201270T ATE12185T1 (de) 1980-11-24 1981-11-17 Volleyball-wurfvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE6/47325A BE886329A (fr) 1980-11-24 1980-11-24 Lanceur de ballon en volley-ball
BE6047325 1980-11-24

Publications (2)

Publication Number Publication Date
EP0052904A1 true EP0052904A1 (de) 1982-06-02
EP0052904B1 EP0052904B1 (de) 1985-03-20

Family

ID=3874882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81201270A Expired EP0052904B1 (de) 1980-11-24 1981-11-17 Volleyball-Wurfvorrichtung

Country Status (4)

Country Link
EP (1) EP0052904B1 (de)
AT (1) ATE12185T1 (de)
BE (1) BE886329A (de)
DE (1) DE3169447D1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986002572A1 (en) * 1984-10-24 1986-05-09 Sumsky Filial Kharkovskogo Politekhnicheskogo Inst Device for throwing balls
CN115155037A (zh) * 2022-08-09 2022-10-11 郑州职业技术学院 一种气排球训练发射器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB500440A (en) * 1937-08-21 1939-02-09 Sydney Richardson A new or improved ball projecting appliance
CH287898A (fr) * 1949-07-27 1952-12-31 Louis Denghy John Anthony Appareil permettant de s'entraîner à la pratique des jeux de balle, comme le tennis.
US3470859A (en) * 1966-08-23 1969-10-07 Lorenzo J Ponza Ball throwing machine with pivotal resilient mount
WO1980001835A1 (en) * 1979-02-28 1980-09-04 S Morgan Volleyball practice machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB500440A (en) * 1937-08-21 1939-02-09 Sydney Richardson A new or improved ball projecting appliance
CH287898A (fr) * 1949-07-27 1952-12-31 Louis Denghy John Anthony Appareil permettant de s'entraîner à la pratique des jeux de balle, comme le tennis.
US3470859A (en) * 1966-08-23 1969-10-07 Lorenzo J Ponza Ball throwing machine with pivotal resilient mount
WO1980001835A1 (en) * 1979-02-28 1980-09-04 S Morgan Volleyball practice machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986002572A1 (en) * 1984-10-24 1986-05-09 Sumsky Filial Kharkovskogo Politekhnicheskogo Inst Device for throwing balls
GB2176120A (en) * 1984-10-24 1986-12-17 Sumsk Kh Polt I Device for throwing balls
US4709685A (en) * 1984-10-24 1987-12-01 Sumsky Filial Kharkovskogo Politekhnicheskogo Instituta Ball throwing device
CN115155037A (zh) * 2022-08-09 2022-10-11 郑州职业技术学院 一种气排球训练发射器

Also Published As

Publication number Publication date
ATE12185T1 (de) 1985-04-15
DE3169447D1 (en) 1985-04-25
EP0052904B1 (de) 1985-03-20
BE886329A (fr) 1981-03-16

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