JP2019517378A - In particular, a landing device for a gymnast to move away from the instrument and to perform the end skill - Google Patents

Abstract

The subject of the present invention is a landing device for a gymnast, in particular when performing a javelin away from the instrument, at least one first shock absorbing device, in particular in a landing device for producing a stable jizz. Body (10) and one second shock absorber (12), at least one of these two shock absorbers being expandable, these at least two shock absorbers being superimposed on one another At least one first shock absorber (10) and one second shock absorber (12), and means (14) for connecting the at least two shock absorbers in the overlapping position. It is a landing apparatus characterized by including. The second shock absorber is expandable. [Selected figure] Figure 2

Description

  The present invention relates to a landing device, especially for gymnasts when doing end-of-life maneuvers away from the instrument, and in particular to a landing device for providing a stable end-of-life technique.

  Currently, shock absorbing mats are used to cushion the impact of athletes who fall during performances of gymnasts using instruments such as parallel bars, staggered bars, or horses.

  There is also provided a landing device for a gymnast who aims to allow a stable end technique when the end technique is performed away from the device.

  The main function of these landing devices in the form of mats is to absorb the impact if dropped as a result of incorrect movement, thereby making it possible for the athlete's safety without using parachute mats that are stretched high. It is to preserve. The parachute mat does not ensure the stability of the dropped gymnast.

  In fact, the level of shock absorption must be robust enough to allow for a satisfactory landing and to provide stability at the moment the gymnast performing the end-skill after the performance has landed.

  These current shock absorbing mats have an outer envelope which encloses a parallelepiped foam.

  A mat of this kind, unlike a gymnastic mat of a few cm thickness, has a large thickness of about 20 cm, and its length is between 1 m and several m. Under no circumstances should this height be further increased.

  Patent Document 1 discloses, for example, a fall preventing cushion having a height of 50 cm or more. Such a fall arresting cushion is used outdoors, with a protective layer placed on top (as a protection against tears and other piercings) to protect the lower thick expandable envelope. There is. The jacket is not inflatable but rather comprises a mechanically compressible expandable component such as a foam pad and at least one air inlet.

  Thus, when the constraints of the jacket are released, the expandable components will return to their original shape and air at atmospheric pressure will be drawn in to fill the air gaps between the expandable components.

  Such cushions do not have shock absorbing and stabilizing functions in gymnastics, but merely safety functions.

  The jacket must be mechanically strong and is usually made of a coated fabric with some degree of stiffness. This is necessary to ensure maintenance of the generally parallelepiped shape of the mat, even after a large amount of pressure has been applied.

  When a competition is held or during a sporting event related to gymnastics, gym halls that do not normally have a mat must be equipped with the mat.

  These multipurpose sports halls must be equipped with events according to various regulations.

  In the case of gymnastics, there are a number of disciplines and the impact-absorbing / stabilizing mat according to the invention also needs to be in accordance with these disciplines.

  In fact, when equipped in sports halls, such mats must first be transported to the storage area. The mat is difficult to transport due to its rigidity, and personnel are required to wind up the mat as much as possible, especially if the mat is very long. If the mat is short, the mat is still bulky enough to impede passage through the door and heavy enough to be difficult to carry.

  Because the mat is not compressed, the transport volume is equal to the volume of the mat, which requires the use of a very large volume of vehicle for transport of the mat.

  Once loaded, the mat is transported to the hall and equipped, but at this time the reverse procedure of transporting the mat must be taken.

The cost is
Such equipment costs are indeed high, as they are proportional to the labor costs, duration and number of transport volumes in addition to the difficulty of the work.

  In the field of gymnastics, mats are known which are provided with an airtight jacket. The hermetic envelope has a welding edge and at least one section, each section comprising at least one valve for expansion by pressurized air.

  Internal spacing means are provided between the upper and lower surfaces to preserve the original shape needed for the game. These connections ensure that a constant thickness is maintained over the entire surface.

  Thus, these jackets make it possible to produce mats which occupy only a small volume in the contracted state, which makes it possible to facilitate manual transport and to limit the size of the transport vehicle . The ease of handling and the reduction in weight mean that the number of personnel required to install the mat is also reduced.

  Installation by inflation, i.e. installation by blowing pressurized air on site, takes place very quickly.

  Although this structure is perfect for floor exercises, it becomes more troublesome as a safety mat for exercise exercises. If the same pressure as that used for thin mats for floor exercises, for example about 220 mbar, is applied, this mat will be too hard to fall. On the other hand, if the pressure is reduced to about 120 mbar, the mat will provide good shock absorption, but a large amount of energy will be released at the time of the collision, and the gymnast will bounce a lot, making stable landing difficult.

US Patent Application Publication No. 2013/086744

  The object of the present invention is to propose an installation which overcomes the problems that arise with regard to volume and weight reduction, difficult handling, sufficient shock absorption, preservation of the initial shape and compliance with the required shock absorption standards.

  According to one characteristic, a landing device for a gymnast according to the invention, in particular when performing a javelin off the instrument, the landing device for producing a particularly stable javelin is provided by at least one At least one shock absorber and one second shock absorber, at least one of the two shock absorbers being expandable, and at least two of the shock absorbers being superimposed on one another, It is characterized by comprising one first shock absorber and one second shock absorber, and means for connecting these at least two shock absorbers in the overlapping position.

  The shock absorbing device according to the invention will now be described by way of example with reference to the accompanying drawings, with reference to particular non-limiting embodiments.

FIG. 1 is a perspective view of a device according to the invention. Figure 2 is an exploded view of the device of Figure 1; Figure 2 is a side view of the device of Figure 1; FIG. 2 is a cross-sectional view of the device showing the various elements individually.

  The various figures comprise at least one first shock absorber 10 and a second shock absorber 12 superimposed on one another and means 14 for connecting these at least two shock absorbers in the superposition position. Fig. 1 shows a device according to the invention. The first shock absorber is located below the second shock absorber.

In this case, in the illustrated embodiment, the first shock absorber 10 has a height H1 , the second shock absorber 12 has a height H2 , and the total height of the device is H is there.

When applied to steel bar safety mats, the height H1 is between 2 cm and 15 cm, the height H2 is between 5 cm and 20 cm, and the total height H is to meet the required specifications. Should be less than 25 cm.

  In any case, these shock absorbers have a uniform thickness in order to form a plane, the two sides defining each shock absorber being parallel to one another.

  In the illustrated embodiment, the first shock absorber 10 is a flat foam 16 and, if possible, is covered by a jacket 18 of the known type shown in the cross-sectional view of FIG. . The flat foam 16 is in the form of a single parallelepiped having dimensions adapted to the dimensions of the landing zone. Note that these dimensions are fully defined values

  Because of the resiliency of the foam, this first shock absorber 10 maintains its parallelepiped shape even after being subjected to numerous pressure stresses.

  Also according to the illustrated embodiment, the second shock absorber 12 comprises an expandable envelope 20 comprising at least one expansion valve 22. The expansion pressure is, for example, between 120 mbar and 220 mbar.

  The expandable envelope 20 comprises a connection spacer 24 interposed in the interior space, in particular between the lower side of the upper part and the upper side of the lower part. These connection spacers 24 are not visible from the outside and are shown in the cross-sectional view of FIG.

Therefore, the second shock absorber 12 always has a parallelepiped external shape, and the initial shape of the second shock absorber is maintained. Note that in the illustrated preferred embodiment: H2 is greater than H1 .

  Shock-absorbing corner pieces 24 located at the corners, or a shock-absorbing peripheral frame shown selectively only in FIG. 2, as appropriate, to properly maintain the angular shape and ensure complete retention 26 can be provided. These corner pieces and the frame can be made of foam.

  Another alternative is the placement of additional shock absorbers in the form of weights at the corners. This is, for example, a deformable weight having the same properties as the inflatable envelope, which is thicker than the envelope and is adapted to be partially connected onto the envelope.

  These weights increase shock absorption at the time of landing instead of landing, so that they can be partially absorbed by the weights in advance.

  Since these two shock absorbers 10, 12 overlap, means 14 for connecting these shock absorbers to maintain a unitary product even if mutual movement of these shock absorbers occurs after landing. It is provided.

Such connection means 14 are advantageously pairs of connection patches 28-1. 28-2, one being connected to the bottom of the shock absorber which is in the upper position and the other being in the bottom position. Coupled to the top of the. These patches pair may comprise a "Velcro ^{(registered trademark)"} system comprising a loop to another patch pairs provided with a hook on one patch pairs.

  Alternatively, it is also possible to provide a single jacket which ends at the first shock absorber which fixes the second shock absorber in whole or in part.

  Thus, in the illustrated embodiment, the inflatable second impact absorber 12 in the upper position can be separated from the first impact absorber 10 of foam.

It is to be noted that during transport and installation, the first shock absorber 10 has a constant thickness H1 but is independent and therefore easily woundable. In any event, such mats are easy to handle, even if not wound up, and their light weight will facilitate such handling.

  Finally, in terms of height, it should be noted that the thickness of this second shock absorber is maintained in a restricted state, so that it is very easy to wind up and transport.

  The inflatable second shock absorber 14 is very easy to handle, especially after it has been deflated and wound up.

  Also, in the assembly, once contracted, the connected first shock absorber and second shock absorber cooperate to have a small combined thickness and be maintained in that state. In fact, the inflatable envelope is empty inside and its nominal thickness is very small.

  Also, this brings about obvious technical advantages.

  As noted below, landing comfort and shock absorption quality meet the required standards.

  The test was carried out with an impactor having a diameter of 150 mm and a weight of 20 kg for a mat that performs a simple end-of-life technique that results in a stable landing.

  The drop height of the impacting body is 800 mm, which is standard for this type of mat.

The impact test is based on the standard position of the mat, i.e. 8 places defined below, i.e.
-25 cm from two edges defining each corner, i.e. 4 places in each of the 4 corners, and-25 cm from the center of the mat along a vertical bisector of the center, i.e. It took place in four places.

  The following table shows that the values obtained meet the standards, in particular the NF standards EN 12 503-1 and EN 12 503-4, with regard to shock absorption, vertical deformation and energy release.

  It is clear that compliance with the standard and the values obtained are very different from those of the prior art drop prevention mats.

Claims (11)

  In particular, in a landing device for a gymnast who performs an end technique away from the instrument, in particular for providing a stable end technique, the device comprises at least one first shock-absorbing device superimposed on one another Body (10) and one second shock absorber (12), and means (14) for connecting at least two of these shock absorbers in said overlapping position, said second shock absorber (12) A landing device, characterized in that it is placed on top and is made inflatable.   Landing device according to claim 1, characterized in that the thickness of the shock absorber (10, 12) is uniform in order to form a flat surface.   The landing device according to claim 1 or 2, wherein the first shock absorber (10), which is another one of the shock absorbers, is made of a block-like foam. The first shock absorber (10) made of foam has a height H1 , the second inflatable shock absorber (12) has a height H2 , H2 being H1 Landing device according to claim 1 or 2, characterized in that it is larger than. The heights are respectively
Between H1: 2 cm and 15 cm,
The landing apparatus according to claim 3, characterized in that H2: between 5 cm and 20 cm, and H: less than 25 cm.   In the case of two shock absorbers, the connection means (14) comprise a pair of patches (28), one connected to the bottom of the shock absorber (12) arranged on top and the other on the bottom Landing device according to any of the preceding claims, characterized in that it is coupled to the upper surface of the shock absorber (10).   Landing device according to any of the preceding claims, characterized in that said at least one inflatable impact absorber (12) has a weight at the corners.   Landing device according to any of the preceding claims, characterized in that the at least one inflatable impact absorber (12) comprises at the corners shock-absorbing corner pieces (24).   Landing device according to any of the preceding claims, characterized in that the at least one inflatable shock absorber (12) comprises a shock absorbing peripheral frame (26).   10. A device according to any of the preceding claims, characterized in that the second inflatable upper shock absorber is adapted to be expanded to a pressure between 120mbar and 220mbar. Landing equipment.   A preceding claim, characterized in that a single jacket originating at the first shock absorber is adapted to fix the second shock absorber in whole or in part. The landing apparatus of any one of 1-10.