WO1986005109A1

WO1986005109A1 - Process and device for the aimed shooting of soccer balls

Info

Publication number: WO1986005109A1
Application number: PCT/EP1986/000105
Authority: WO
Inventors: Kurt Scheiwiller
Original assignee: Kurt Scheiwiller
Priority date: 1985-03-01
Filing date: 1986-03-01
Publication date: 1986-09-12
Also published as: DE3674864D1; EP0213195A1; EP0213195B1

Abstract

The device for the aimed shooting of soccer balls involves a striking arm (8) connected to a flywheel effect body (7), both being driven horizontally in rotary motion outside the starting position of the ball (20) by a drive motor (9). The striking arm (8) is moved in its rotating state into the shooting trajectory of the ball (20) shortly before the ball (20) is struck, and in this way the ball is accelerated.

Description

Method and device for directional shooting of

Soccer balls

The invention relates to a method for the directed shooting of soccer balls, in which the soccer ball is accelerated from a starting position in a holder by means of a striking arm moved along a circular path over an acceleration path and then released, and to a device for carrying it out of such a procedure.

Such prior art is described for example in DE-C-2 651 335. Each soccer ball is brought individually from a ball magazine into a starting position. Then an impact arm is accelerated along with a soccer ball along a circular path after engaging a cam drive. The end position of the striking arm after the shot has been fired is determined by a damper which at the same time also destroys kinetic energy remaining in the mechanism and striking arm. The known device works precisely and reliably, In practice, however, proved to be relatively heavy (300 to 400 kg), which significantly limits its range of use. In addition, a certain monotony could arise when the device was used by the player, since the ball was essentially always shot in approximately the same way or arrived at the player. If the person who looked after the device wanted to change the direction of the throw of the ball, the player could recognize the change by means of the corresponding manipulations on the device immediately before the ball was even shot, which is the usefulness of the device greatly reduced to training.

Proceeding from this, the object of the invention is to develop an improved ball shooting method which avoids the disadvantages mentioned and allows a particularly light construction and desired game variations without having to do without a precise, preselectable firing direction and firing range . The aim of the new invention is also the creation of a new ball-shooting device which, together with the caregiver - who does not need to have any qualifications - represents an opposing football player as realistically as possible.

According to the invention, this is achieved in a method of the type mentioned in the introduction in that at the end of the ball acceleration section the direction of the force normal of the striking arm, which runs through the center of the ball and through the point of impact of the stroke on the ball, matches the desired firing direction .

With the first test device, the best results in terms of shot accuracy and reproducibility were achieved and at the same time a device that was less than half the weight was built. In an advantageous embodiment of the invention can be used to Erzeu¬ a narrowing in its weft direction and / or ren -wide wählba¬ _* Effet-ball (ie, a Ballschus¬ provided with swirl ses) the ball holder about a pivot point set or be adjusted • whose radius of rotation corresponds essentially to the turning radius of the circular path of the striking arm. In this case, by only slightly shifting the ball holder, which cannot be easily recognized by the player being played, but especially remains unnoticed at the time of the launch, the ball can have a twist, that is to say a movement about its own axis, and thereby one curved (arch-shaped) throwing track is embossed and thereby provides surprises desired in a training session. However, these surprises are fully under the control of the operator.

However, it is also particularly advantageous if, in order to produce an effet ball that can be selected in the firing direction, the ball holder is rotated or adjusted by a pivot point that is a small amount, which is preferably the sum of a ball diameter and a diameter of a corresponding spherical shape of the racket (or the radius of a spherical striking head), is parallel and displaced in the firing direction.

As a result, very precise physical and geometric boundary conditions for optimal achievement of the inventions. fertilized basis.

In a preferred continuation of the invention, Ein¬

-. position of the inclination of the launch direction (launch angle) adjusts the height of the ball so that the impact point on the ball can be preselected accordingly. Since the invention allows a lightweight construction of the device it is very useful to determine the horizontal shot alignment by turning off the whole device. Thus, each shot can be selected and executed in a very simple manner, both in the direction, in the range and as a spin ball.

To set the throwing distance, the speed of rotation of the striking arm is within a range from 100 to 400 rpm. suitably chosen so that a corresponding acceleration is impressed on the ball.

A further, advantageous embodiment of the invention also consists in that, in order to produce an effet ball at a distance from the ball holder, swirl flaps are brought laterally to the trajectory of the ball, by touching which the passing ball receives the desired swirl.

The invention further relates to a device for the directional shooting of soccer balls, in which the ball is accelerated from a starting position in a holder by means of a striking arm moved along a circular path and is released from the holder after the striking arm strikes the ball . According to the invention, it is provided that the striking arm forms a striking unit together with a centrifugal mass and can be set in a rotary movement with the centrifugal mass, in which it strikes from a first, neutral position in which it is in the starting position of the football is not touched, can be pivoted into a second active striking position, in which it strikes the ball as it passes and shoots it, after which it is folded back into its first neutral position before the end of the following round. The striking arm and the flywheel now form a rotating unit, so the striking arm can be designed accordingly lightly on its own. The striking arm is pivoted into a striking position during the rotary movement, for which only a relatively small force is required. From the impact, an acceleration force directed through the center of the ball is impressed on the ball, which force remains effective along an acceleration path. In the event of an immediate impact, the ball, which is fully inflated with air, is locally pressed in somewhat by the striking arm, which immediately results in a reaction game between the elasticity of the ball and the movement of the striking arm. Because of its elasticity, the ball lifts off the striking arm after a certain common distance and flies freely in the preselected direction of firing, while the striking arm immediately moves out of the direction of the shot.

The device according to the invention can e.g. designed in the manner of a large hand lawn mower and also handled accordingly. In this way, a light machine can be created that can be driven on wheels, possibly driven by a motor, and in particular has a very large mobility. The drive can take place either electrically (for example via a battery) or with a gasoline engine.

In an advantageous development of the invention, the ball holder is designed to be pivotable about a vertical axis of rotation, as a result of which different points of impact of the striking arm on the ball can be brought about for the production of effet balls. The vertical axis of rotation is placed in the vicinity of the axis of rotation of the flywheel, i.e. in the middle of the whole device.

./10 The striking arm preferably has a spherical section in the region of the striking head, which can also be designed in the form of a reduced section of a car tire.

In a further advantageous further development idea, the striking arm, which can be moved in a horizontal plane, can be rotated into a shot position by pivoting about an axis, such that a co-rotating cam attached to the axis strikes the striking arm immediately afterwards via a stopper firmly attached to the device each stroke is pressed back into a horizontal plane and blocked against the flywheel mass via a releasable bolt.

Effet balls can also be generated with the device when located in a distance of 1 to 2 Soccer diameters of the ball holder in the firing direction a of wenig¬ least two sides optional Power On ^"tbarer ball-Durchschuss¬ frame with sliding or hinged doors to The ball is knocked away from the ball holder by the striking arm, but before it leaves the machine, it flies through the ball shooting frame and grazes the flap protruding into its trajectory on the preselected side one-sided rubbing on the flap has a twist which, depending on the strength of the rubbing, triggers a correspondingly strong twist and thus the effect of the spin ball, although theoretically the generation of the shot and spin ball are decoupled in this embodiment , it has nevertheless been shown that the joint interaction of the inventive generation of the field, as it were in the smallest possible space in combination with the use of a frame-like swirl generator enables a particularly successful solution to the object on which the invention is based. this applies especially for the small dimensions of the device. If the flywheel rotates about a horizontal axis, ie in a vertical plane, the device becomes very narrow and can even be moved in and out through normal doors.

In the following, the invention will now be explained in more detail with reference to embodiments. Show it

1 shows a perspective illustration of the principle of a device according to the invention with a partially interrupted housing;

Fig. 2 different shot positions for a spin ball, as well

Fig. 3 shows a second embodiment of an inventive device in a perspective schematic representation.

First, reference is made to FIG. 1. The device shown there is similar to a mobile lawnmower consisting of a chassis 1, a set of two wheels 2, a drawbar 3 firmly connected to the chassis 1, two handles 4 and 4 ', a protective housing 5 and a ball magazine 6 built.

The two movable core kits of the device are highlighted for easier understanding of the mode of operation. For this, a first core kit, consisting of a flywheel 7, a blow bar 8 and a drive motor 9, is illustrated with points, while the second core kit (for a ball holder and ball positioning 10) is also shown Strichschaff r is marked. The ball holder and positioning 10 has the following structure:

A pivot arm 11 is connected via a pivot bearing 12 and a support 13 and a holding bracket 14 to a frame 15 which is part of the chassis 1. The Ver¬ swivel arm 11 is also attached via an extension tube 16 with a vertical adjustment support 17 via a pivot pin 18 and two tabs 19.

The ball holder and positioning 10 are assigned two basic functions: a height adjustment and a lateral adjustment. For the positioning of a soccer ball 20 in the vertical direction, a shift handle 21 is attached to the adjustment support 17, which can be inserted into corresponding bores 23 of a bracket 24 in direct connection with a locking bolt 22. A cable pull 25 is pulled or relaxed by a corresponding pivoting movement (arrow 26). By pulling and releasing the cable 25, a ball holder 27 on a slide support 28 is moved vertically upwards or downwards. The downward movement can also take place due to the weight of the ball holder 27 and the upward movement can be supported by a spring. The ball holder 27 also has three finger-like thin metal springs 29, which on the one hand hold the ball 20 in position with slight pressure and on the other hand are intended to prevent jumping when a new ball 20 'etc. falls into it.

A brake handle 31 is attached to a U-shaped leg 30 of the adjustment support 17 and is intended to prevent the pivoting arm 11 from twisting via a cable pull (not shown) except after the brake handle 31 has been released intentionally. So if the brake handle 31 is not released or tightened, the swivel arm 11 and also the ball holder 27 remain rigidly fixed relative to the frame 15 or relative to the chassis 1.

The lateral adjustment of the ball holder 10 serves to produce an effet ball and is described further below in connection with FIG. 2. A normal straight shot is created in the middle position. The change of direction of the straight shot is achieved by turning the whole unit.

A switch button 32 or 33, which act directly on the corresponding control of a control box 34, is attached to the adjustment support 17 or to the leg 30. These switch buttons are therefore designed in duplicate so that a ball shot is not triggered by unauthorized persons or unintentionally, because both buttons must be pressed for each shot.

The flywheel 7 is attached to a shaft 35 with an axis 36 which is arranged at a distance "X" from a corresponding axis 37 of the pivot bearing 12 on the frame 15. The flywheel 7 is thus rotated around a center offset from the movement of the ball holder 27, so that different positions of the ball 20 can be adjusted relative to the striking bar 8.

The striking bar 8 has a spherical section 38 at the outer striking end, on which the point of impact to the ball results. The blow bar 8 is welded at its inner end to an axis of rotation 39, so that the axis of rotation 39 and the blow bar 8 carry out a common rotary movement according to arrow 40. In the position shown, the blow bar 8 is in its active blow position and are indirectly driven before striking the ball 20 with the flywheel 7 of the blow bar 8 in the direction of the Pfei¬ les 41 having a continuously variable speed of 0 to 500, preferably from 100 to 400 revolutions _* s per minute for the motor 9 can (depending on the setting). The desired speed can be set on the control box 34; the overdrive takes place via a belt 42 and a pulley 43 which is wedged on the shaft 35.

The axis of rotation 39 is held on the flywheel 7 by means of the impact bar 8 via two bearing points 44 and has a cam 45 at the inner end which runs against a curve 46 which moves in the area of the rotating circle of the cam 45 ¬ frame 1 is welded.

The distances between the cam 45 and the curve 46 on the one hand and between the ball section 38 of the blow bar 8 and the ball 20 on the other hand are selected such that the cam 45 only touches the curve 46 when the ball 20 is shot and is no longer in contact with the ball section 38 . Because with cam 45 and curve 46, the blow bar 8 is pressed into the rotating plane of the flywheel 7 and remains there until a command is given for a new shot.

The blocking of the blow bar 8 in the horizontal idle position is indicated by a nose of the cam 45 and a. Bolt 49, which is pulled into the holding position by a spring 50, is ensured. As soon as the cam 45 has made a 90 ° rotation on the curve 46, the bolt 49 prevents the impact bar 8 from springing back. At the same time, a strong tension spring 51 is tensioned with the rotation of the cam 45. Via the control box 34, a trigger bolt 48 can be moved downwards by means of an electromagnetic coil 47. are pressed so that after a corresponding time delay the bolt 49 is pushed away, the tension force of the tension spring

51 released and the blow bar is switched from its inactive, neutral freewheel position to the active blow position. For the movement into the striking position, about half the circumferential movement of the flywheel 7 is available.

It has been shown that the ball magazine with a career

52 works very appropriately for a ball track for children. The balls move completely with gravity on the inclined path. In order for the balls to fall into the holder exactly the same when the ball holder 27 is shown, the last section 53 of the track is attached to the pivot arm 11 and therefore moves with the movement of the ball holder 27. Rolling the ball 20 '' * * into the position of the ball 20 '' * does not cause any problems due to the very small displacement of the last section 53 relative to the fixed track 52. A sufficiently large number of footballs can be stored in the ball magazine 6 in this way and automatically finds its way into the ball holder 27. The second last ball in FIG. 1, the ball 20 ', is replaced by the ball 20, which is already in the ball holder 27 is stopped. The launch movement of the ball 20 is so rapid that, due to the inertial and frictional forces of the balls stacked in front of it, the launch is not negatively influenced by the balls above it. The striking arm 8 or the ball section 38 remain on the ball over a certain distance , at least so long that the ball 20 is no longer in contact with the ball 20 'when flying away freely. The ball that follows automatically does not disturb the direction or strength of the ball shot in any way. In ^"Fig. 2, the geometric situation is shown schematically for ei¬ nen Effet ball, where parts corresponding to parts of Fig. 1 are ver¬ see the same reference numerals as in Fig. 1.

A situation is shown in FIG. 2 in which the ball 20 is in contact with the ball section 38. This is an idealized representation, which arises both when the striker 8 and the ball 20 are contacted for the first and the last time. With the different ball positions 20, 20a, and 20b, different starting situations for different spin balls are to be shown. The ball 20 gives e.g. according to arrow 60 a spin ball to the right and the ball 20a a normal straight shot according to arrow 61.

A spin ball is created by simultaneously twisting and rotating the ball around its own center during its acceleration. The main acceleration is, for example, for ball 20 in the direction of arrow 60, that is to say runs in the direction of the straight line through center or center of gravity M of ball 20 and point of impact B between ball 20 and ball section 38.

However, since the striking bar 8 follows the ball 20 on a specific acceleration path section, in addition to the main direction of movement (arrow 60) there is also a change in path perpendicular thereto, which is designated by "X" in FIG. 2.

In the invention, the ball is free during acceleration, so that the movement component X, due to friction, is forced on the ball as a swirl component. It has been shown that a spherical shape or a shape corresponding to a reduced section of a Car tires give the best results for a straight shot as well as for spin balls. In contrast, a sharp edge or surface would only allow a very limited variation of the shots.

In particular, the best conditions were created when the turning radius of the ball in relation to the point of impact B of the ball section 38 or the flywheel mass 7 corresponds to the adjustment radius between the axis 37 and the center of the ball 20, and also when the two axes 36 and 37 are displaced together by the dimension of a ball diameter and a ball segment diameter. Once this geometry has been determined, the optimal launch sector can easily be determined on the device itself. These measures allow in particular a shortening of the turning circle of the blow bar 8 or the flywheel mass 7, which also leads to a significant reduction in the size of the device and thus to a reduction in weight.

However, what seems to be solved particularly well with the new invention is the surprisingly good accuracy of the spin balls, which do not fly anywhere, but fly in the same direction as a straight shot, the ball only in the last part of the trajectory an unexpected off - Bend or a new arc shape takes.

In the following, reference is now made to FIG. 3. The structure of the device shown there corresponds in many parts to that of the device from FIG. 1, which is why only different parts have been given different reference numerals.

In Fig. 3, the flywheel 7 is mounted on a horizontal axis 70 so that it moves in a vertical plane. All mechanical and electrical control elements correspond in their mode of operation to the example from FIG. 1.

A ball holder 71 is rotatably mounted on a tilting frame 72 on the horizontal axis 70. The ball holder 71 is raised and lowered by means of a cable pull or a controllable cylinder 73, so that the ball 20 can be adjusted with the ball holder 71 to different positions in relation to the blow bar 8. The successful firing of a ball 20 is recorded with a lever mechanism 74 which can be actuated by the ball 20 in order to coordinate the entire movement sequence. Fundamentally different than in FIG. 1, however, spin balls are produced in FIG. 3. In the shooting direction (arrow 75) in front of the ball holder 71 there is a ball-through frame 76, which is equipped on two sides with an insertable, elastic flap 77 and 78, respectively. Depending on which side the effet ball is to be deflected to, the corresponding door 77 or 78 is pushed in by moving an inlet frame 79 via a cable pull or a displacement motor 80 such that the ball travels in its trajectory Corresponding flap 77 or 78 grazes laterally and thereby receives the desired swirl. The insert frame 79 itself is mounted on a link 81 which, like the ball holder 71, is firmly connected to the tilting frame 72. This has the particular advantage that the free opening 82 of the insert frame 79 can be selected to be small because it is always moved in the weft direction and is also pivoted. If one wants to change the firing direction in the horizontal direction, the entire device on the wheels 2 is rotated accordingly. The wheels 2, like all other mechanical elements, are attached to a frame 15. The adjustment of the vertical firing direction, as explained, is made possible by a cable or cylinder 73 as well as the tilting frame 72 and can be used for the operator. tion person exactly the same as in Fig. 1. For protection against environmental influences as well as for the safety of the caring persons, a covering hood 83 is indicated for the machine, which covers the entire upper side. The advantage of the solution according to FIG. 3 is that the machine

70 to 80 cm wide can be built, so it can be guided through all normal room doors. It makes sense to design the ball magazine as a track 52 as in FIG. 1. A movable track 84, which is also the ball holder

71 for a free tilting movement is connected to the tilting frame 72 via a tab 85, but separated from the raceway 52, and is formed or bent so that the balls waiting on the track piece 84 from the movement of the impact bar 8 not be disturbed. It is of course possible that the solution according to FIG. 1 can also be equipped with a ball-through frame 76, in which case the pivot arm 11 can then be omitted.

Claims

1. Method for the directional shooting of soccer balls, in which the ball is accelerated from a starting position in a holder by means of a striking arm moved along a circular path over an acceleration path and is then released, characterized in that at the end of the acceleration path the direction of the force standards of the striking arm, which runs through the center of the ball and through the point of impact, coincides with the desired direction of launch.

2. The method according to claim 1, characterized in that for generating a selectable in its firing direction, swirling ball shot, the bracket a pivot point is adjusted, the turning radius of which essentially corresponds to the turning radius of the circular path of the striking arm.

3. The method according to claim 2, characterized in that for generating a selectable in its firing direction, swirling ball shot, the bracket around a pivot point by a small amount, preferably by the sum of a ball diameter and a diameter egg ¬ a corresponding spherical shape of the racket (radius of a spherical striking head) is displaced parallel and in the direction of firing, is adjusted.

4. The method according to any one of claims 1 to 3, characterized in that the height of the ball holder is adjusted in order to adjust the inclination of the firing direction (firing angle) and the point of impact of the stroke on the ball is accordingly changed.

5. The method according to any one of claims 1 to 4, characterized in that to change the horizontal weft orientation, the entire device is rotated as a unit supported on wheels.

6. The method according to any one of claims 1 to 5, characterized in that the throwing distance is adjusted by adjusting the speed of the Schlag¬ arm within a range of 100 to 400 revolutions per minute.

7. 'Method according to one of claims 1 or 3 to 6, characterized in that deflection or swirl flaps are brought to the side of the trajectory of the ball for generating a swirling ball shot at a distance after the launch site.

8. Device for the directional shooting of soccer balls, in which a ball (20) can be accelerated from a starting position in a ball holder (27) by means of a beating bar (8) moving along a circular path, and after the batting bar (8) has hit the ball (20) is released from the ball holder (27), in particular for carrying out a method according to claim 1, characterized in that the striking bar (8) forms a striking unit together with a flywheel (7) and into a flywheel with the flywheel Rotational movement is displaceable, in which it can be pivoted from a first neutral position, in which it does not touch the ball (20) lying in the starting position in the rotation, into a second active striking position in which it lies in the position in the starting position Ball (20) strikes as it passes and shoots it down, after which it can be folded back into its first neutral position before the next round r is.

9. The device according to claim 8, characterized in that the flywheel (7) about a vertical axis (36) is rotatably mounted in a horizontal plane.

10. Device according to claims 8 or 9, characterized in that the holder (27) about a vertical axis of rotation (37) is pivotable.

11: Device according to claim 8, characterized in that the flywheel (7) is rotatably mounted about a horizontal axis (70) in a vertical plane.

12. Device according to claims 8, 9 or 11, characterized in that a ball-through frame (76) with flaps (77 or 78) which can be inserted at least from two sides are arranged at a distance from the ball holder (27) .

13. The apparatus according to claim 12, characterized in that the flaps are made of elastic material.

14. The apparatus according to claim 8, characterized in that the blow bar (8) has a striking head, which is preferably designed as a spherical section (38) or in the form of a reduced car tire.