Classifications

• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
  • A63B63/00—Targets or goals for ball games

Definitions

• the invention relates to a sports training device, in particular golf.
• a sports training device in particular golf.
• various types of simulators which indicate without the ball running its entire trajectory the characteristics of what would have been said trajectory according to the parameters recorded on the launch pad (essentially distance and dispersion angle), simulators which are in the current state of the art often electric or electronic.
• the invention relates to a new type of training equipment having the above destination, which comprises a net (or canvas) which is suspended and tensioned in such a way that it absorbs most of the kinetic energy of The ball thrown against him and helps to give adequate information.
• This device has an important advantage compared to known devices, residing in that it only comprises perfectly reliable and rustic mechanical mechanisms insensitive to bad weather allowing the use of the simulator outside without special precautions.
• the apparatus of the invention is characterized in that it comprises a net or canvas suspended vertically at its upper part and the two lower ends of which are fixed to two calibrated masses whose displacement along an inclined plane varies according to the force impact of a golf ball on said net.
• - Figure 1 is an overview of the device.
• FIG. 2 shows a device for moving the masses on the inclined planes.
• Figure 1 shows a canvas 1 stretched vertically.
• This tile is made of a fabric or net resistant to use, or plastic or similar material on which can be reproduced a golf landscape or any other benchmark to target.
• the canvas is integral at its upper part with a cross-member 2 fixed itself on the two uprights 3 of the frame of the simulator, a frame ensuring the stability of the assembly.
• the square shape at the top of the uprights 3 moves the fabric 1 away from said uprights.
• the lower corners of the tile are fixed on two calibrated and identical masses 4 which move freely along the inclined plane formed by two cords 5 stretched between fixed points of the frame and forming an angle of 45 °, ideal angle in ballistics for get the best trajectory.
• the kinetic energy to absorb is important when you consider that a golf ball which weighs approximately 4 6 g can arrive at a speed of 220 km / h and the beginning of description which has just been made allows to explain one of the features of the invention.
• the golf ball arrives on the net 1, the latter deforms and lifts and the lower angles of said net move along the inclined plane formed by the strings 5 by means of the masses 4 on which they are fixed and that they move. It then suffices to measure the displacement of the masses to obtain indications making it possible to determine the characteristics of the trajectory that the ball would have traveled if the latter had not struck the net.
• Figure 2 shows a device for moving the calibrated masses 4 on the strings 5 without slipping or braking, detrimental to proper operation.
• the rope 5 is stretched between a point on the upright 3 and a point on the base 6.
• a fork with two teeth 7 traps the end of the rope by the knot 8.
• a ring with stop screw 9 keeps said rope in tension, the ring being in abutment on the fork with two teeth 10 fixed on the upright 3.
• the swivel 12 of the pulley is fixed on the mass 4.
• the latter has a hook 15 which makes it possible to make it integral with the angle of the thread 1.
• a cord 16 attached to the upper cross member 2 supports the mass 4, so that the net does not support the latter permanently.
• a cord 17 is fixed to the mass 4 "It passes through the eyelet 18 and goes towards two graduated strips, as shown in FIG. 3.
• the cord 17 is connected to a index 19 which moves freely on a rod 20.
• the latter is integral with an elongated U-shaped frame 21 comprising a graduated ruler after calibration 22 in front of which the index moves.
• a spring 23 in pressure on the rod 20 brakes slightly and fairly so that the index does not continue its course after immobilization of the masses 4 due to inertia.
• Figures 4, 5 and 6 show the graphical determination of the forces and displacements resulting from the impact of the ball on the net with the effects on the reception and appreciation mechanisms. As in mechanics the displacement of a mass on an inclined plane is proportional to L to the force used, the displacement of the masses 4 is also proportional to the force of impact of the ball on the net 1.
• FIG. 4 shows on a top view how the displacements D of the masses 40 and 4D are identical when the impact is perfectly centered (the forces FD and FG being equal).
• Figure 5 illustrates an example with the impact of the ball on the left of the net.
• F x (A + B) (FD x B) + (FG x A)
• FD x B FG x A
• FIG. 7 illustrates another solution for assessing the results. THERE is then only one strip identical to those defined in Figure 3.
• the two cords 17G and 17D secured at one end of the masses 4G and 4D are connected at the other end to the cord 17 which moves the index 19 under the same conditions as defined above.
• the average between the reciprocal displacements of the masses 4G and 4D is done automatically and the reading of the result is done directly. If one of the masses has a displacement greater than the other (in the case of a poorly centered shot), the angular dispersion B can be read in clear as a function of the position of the cord 17 on the graduated and calibrated vector 14 (in phantom in Figure 7).
• the strip must be positioned at a good distance from the apparatus, so that the cord 17 is the bisector without breaking the angle formed by the cords 17G and 17D. All this is easily found in the field by a precise determination of the length of the different vectors.
• the steps 25 define the position of the golfer in relation to all of the components.
• FIG. 6 shows in a side view that the ideal trajectory being that defined by the inclined plane at
• FIG. 8 shows an overall view with the addition of two lateral threads 24 forming a cage to give complete safety, it should be noted that these two threads can be one with the main thread 1.

Landscapes

• Health & Medical Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Physical Education & Sports Medicine (AREA)
• Force Measurement Appropriate To Specific Purposes (AREA)
• Golf Clubs (AREA)
• Rehabilitation Tools (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9330886

Family Applications (1)

Country Status (6)

Families Citing this family (15)

Family Cites Families (11)

• 1986
  • 1986-01-06 FR FR8600150A patent/FR2592589B1/fr not_active Expired - Lifetime
• 1987
  • 1987-01-06 JP JP62500674A patent/JPS63502248A/ja active Pending
  • 1987-01-06 WO PCT/FR1987/000003 patent/WO1987004082A1/fr not_active Application Discontinuation
  • 1987-01-06 EP EP87900659A patent/EP0253842A1/de not_active Withdrawn
  • 1987-01-06 AU AU68441/87A patent/AU6844187A/en not_active Abandoned
  • 1987-01-06 US US07/101,180 patent/US4880239A/en not_active Expired - Fee Related

Non-Patent Citations (1)

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