• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The Badminton Wheel (1) includes a cap (2) and a skirt (4), which has an attachment edge (40) and a free edge (42). The skirt (4) of the steering wheel is formed by a entanglement of long fibers (440, 442) of the braid or knit type.
    公开号:FR3023491A1
    申请号:FR1456733
    申请日:2014-07-11
    公开日:2016-01-15
    发明作者:Gregoire Laverty
    申请人:Babolat VS SA；
    IPC主号:
    专利说明:

    [0001] The invention relates to a badminton shuttlecock and a method of manufacturing such a steering wheel. BACKGROUND OF THE INVENTION
    [0002] In known manner, a badminton shuttlecock includes a cap and a skirt attached to the cap. Currently, the ruffles that offer the best flying properties are ruffles whose skirts are made of natural bird feathers. Indeed, these ruffles are very popular with professional players because of the stability of their trajectory, their large screen in the air, their rotational balance, their lightness, the feeling of play they provide and their particular trajectory. However, the manufacturing process of feather shuttlecocks is relatively expensive since the skirts are made by hand, taking care to sort the feathers beforehand, which leads to large variations in quality and flying wheels that wear out very quickly and which can also be avian virus vector. There is therefore no automated method for making these flywheels, which makes them difficult to produce on a large scale, and relatively expensive. There are also ruffles whose skirt is made of synthetic material. This skirt is made by plastic injection into a mold. However, the steering wheel thus formed does not offer flying properties equivalent to those of flying feather and remains for amateur players. It is these drawbacks that the invention intends to remedy more particularly, by proposing a badminton shuttlecock with a skirt of synthetic material, which offers flight properties substantially equivalent to those of a feather wheel. For this purpose the invention relates to a badminton wheel, comprising a cap and a skirt, which has an attachment edge to the cap and a free edge. According to the invention, the skirt of the steering wheel is formed by a entanglement of long fibers, braid or knit type. . Thanks to the invention, the skirt of the steering wheel can be manufactured with a variable fiber surface density, which leads to an asymmetrically distributed mass skirt. In particular, the skirt may be made so that its center of gravity is disposed in an upper half of the skirt, that is to say on the side of the cap. This makes it possible to obtain a good stability of the trajectory of the steering wheel and a good rotational balance.
    [0003] According to advantageous but non-mandatory aspects of the invention, a badminton shuttlecock may incorporate one or more of the following features, taken in any technically permissible combination: - The surface density of long fibers decreases in a direction from the attachment edge to the free edge of the skirt - The entanglement of fibers is a braid. Long fibers form entangled strips or wires. The spaces between the strips or the threads of the skirt have dimensions which decrease by going from the free edge to the fastening edge. Long fibers are made of synthetic material, especially pre-stretched polypropylene with a very high molecular weight. The skirt has several openings, which are closer to the fastening edge than the free edge and / or slots extending from the free edge. - The skirt is generally conical but embossed and has stiffening ribs. - The thickness of the skirt decreases in a direction from the attachment edge to the free edge. The invention also relates to a method of manufacturing a steering wheel as described above. According to the invention, the manufacturing method comprises successive steps of: a) inserting a preformed entanglement of long fibers, of braid or knit type, around a male part of a mold, b) inserting the male part the mold in a housing complementary to a female part of the mold, and c) apply a temperature law and / or pressure on the mold. According to advantageous but non-compulsory aspects of the invention, a method of manufacturing a badminton shuttlecock may incorporate one or more of the following features, taken in any technically permissible combination: Step c) corresponds to a method of the type thermo-compression molding, autoclave molding, resin injection molding in entanglement, or filament winding molding. - The method comprises a step after step a) and prior to step b), of attaching an insert to the skirt, the connection between the skirt and the insert being then reinforced during the production of the step c). - The entanglement is cylindrical constant diameter or preformed at the conicity of the skirt, this entanglement being shaped by fitting around the male part of the mold during step a). - The method comprises a step subsequent to step c), of removing the skirt from the mold and to create openings in the skirt, in particular with a laser cutting device. The invention and other advantages thereof will appear more clearly in the light of the following description of an embodiment of a badminton shuttlecock according to its principle, made in the light of the description which will follow and with reference to Figure 1, which is a view, in principle and side, of a badminton wheel according to the invention. In Figure 1 is shown a badminton wheel 1 comprising a cap 2 and a skirt 4 which, in the example, is glued to the cap 2. The skirt 4 is generally frustoconical and is centered on a central axis X4. This skirt 4 diverges, with respect to the axis X4, in a direction opposite to the stopper 2 and comprises an edge 40 of attachment to the stopper 2 and a free edge 42. Considering the flywheel 1 with its orientation of FIG. an upper or front part of the flywheel 1 is defined as facing upwards from this figure and a lower or rear part as facing downwards. Thus, for example, the cap is mounted at the top or front of the skirt 4 which diverges downward or rearward. The skirt 4 is formed by an entanglement of long and continuous fibers of synthetic material, in particular pre-stretched polypropylene with very high molecular weight (UHMW) for example between 1000 kg / mol and 3000 kg / mol. It may also be any other reinforcing fibers traditionally used in structural composite parts such as carbon fiber, glass or linen for a variant in vegetable fibers. The use of a synthetic material such as UHMW polypropylene, whose density is slightly less than 1, gives a very light flywheel whose final weight is less than 5.5 g. In the example of the figures, the long and continuous fibers are grouped together to form entangled strips 440 and 442, but they may also form entangled yarns. The long fiber webs are entangled in the manner of a braid, which is referenced 44 in FIG. 1. The webs 440 are warp strips and while the webs 442 are weft webs, which are each braided from each other. globally helically around the X4 axis. The weft strips 442 pass alternately above and below the warp bands 440 to form the braid. For clarity of the drawing, the bands 440 and 442 are shown in Figure 1 only in the lower part of the skirt 4. The concentration of the bands 440 and 442 in the braid of the skirt 4 is even lower than the radius of the skirt 4, measured with respect to the axis X4, is large. In other words, the surface density of long fibers of the skirt 4 decreases in a direction from the attachment edge 40 to the free edge 42, that is to say decreases as the radius of the skirt 4 increases . This is best seen in Figure 1 by drawing two straight lines 11 and 12 of extension of two successive 440 chain bands. Note that the lines 11 and 12 are not parallel, but diverge from each other away from the free edge 42. This reflects the fact that the chain bands 440, as well as the weft bands 442, move away from each other at the approach of the free edge 42 of the skirt 4. In addition, the dimension of the spaces E44 formed between the strips increases by going from the fastening edge 40 to the free edge 42, which reflects a decrease in the density of fibers in this direction. For example, a space E441 chosen approximately two-thirds of the skirt 4 is smaller than a space E442 chosen near the free edge 42. The surface density of long fibers in the braid 44 can be expressed in number N of crossings between bands 440 and 442 per square decimeter or by measuring the average area S44 of the spaces E44 on a square decimeter. The density increases in the same direction as the number N and in the opposite direction of the average surface S44. The number N decreases going from the edge 40 to the edge 42, while the average surface S44 increases. In addition, the thickness of the skirt 4 also decreases in a direction from the attachment edge 40 to the free edge 42, that is to say with increasing diameter. This makes it possible to obtain a rigid attachment zone and a flexible zone in the vicinity of the free edge 42.
    [0004] Thus, the mass of the skirt 4 is asymmetrically distributed along the axis X4 and the material is distributed within the skirt 4 so that the center of gravity G of the flywheel 1 is arranged on the side of the cap 2, which improves the flight properties of the steering wheel 1, particularly with regard to the rotational balance of the steering wheel and the stability of the latter during a change of direction following a blow, or "turnover". A "turnover" occurs when a player returns the steering wheel to the other side of the field. In Figure 1, the center of gravity G is arranged in an approximate manner. Moreover, the skirt 4 is not smooth but "embossed", or pleated, that is to say that it comprises a succession of ribs, which are illustrated in FIG. 1 by thin lines. along the skirt 4. These ribs 10 are pleats which protrude from the rest of the skirt generally centrifugally with respect to the axis X4. They improve the rigidity of the skirt 4 and give the steering wheel 1 a good rotational balance around the axis X4. These ribs 10 are therefore stiffening ribs, which further promote the rotation of the wheel around the axis X4. They are regularly distributed around the X4 axis. Thus, the section of the skirt 4, taken perpendicular to the axis X4, is not entirely circular. This section is more like a polygon. Openings 5 are formed in the skirt 4. These openings 5 are evenly distributed around the axis X4. The openings 5 can also extend obliquely or in a peripheral direction with respect to the axis X4. The openings 5 are air passage openings that increase the screen of the steering wheel 1 and accentuate the vertical drop effect when the steering wheel loses speed and the speed of overturning. The dimensions and the distribution of the openings 5 are chosen so as to generate a large flight pattern, without weakening the mechanical strength of the steering wheel 1. In the example, the openings 5 have an oval shape but they can alternatively be any other form, in particular rectangular. The skirt 4 of the flywheel 1 is manufactured by a method of the thermo-compression molding type. This method consists firstly of inserting a pre-formed enchêvetrement of long fibers, of braid or knit type, around a male part of a mold. In the example, the preformed entanglement of long fibers is a cylindrical braid of constant diameter but this can also be preformed at the taper of the skirt 4. This preformed braid is stretched by fitting around the male part and takes a generally frustoconical shape. This tends to stretch the strips and decrease the thickness of the preformed braid at the large diameter area. Stretching between the strips results in an increase in the E44 spaces between the strips and a decrease in the long fiber surface density from the attachment edge 40 to the free edge 42 of the skirt 4. Then, the male part of the mold is inserted into a complementary housing a female part of the mold and a temperature and pressure law is applied within the mold. The molding is therefore carried out hot so as to deform the braid more easily and plastically. This makes it possible to consilide the geometry of the skirt 4. At the end of the molding, the skirt 4 is cooled and the openings 5 are created in the skirt 4 by means of a laser cutting device, which ensures a clean cutting of the outline of the molds. openings 5.35 Finally, the skirt 4 is glued or welded to the cap 2. The method of manufacturing the steering wheel is simple and can be automated. It is therefore possible to manufacture, in large quantities and at a lower cost, flywheels which have flying properties equivalent to those of flying feather.
    [0005] In variant not shown, the skirt 4 is made differently, for example with a method of autoclave molding, molding with resin injection or filament winding molding. In a variant that is not shown, the flywheel 1 comprises an insert for attaching the skirt 4 to the stopper 2. This insert is made of plastic material and comprises a base, which is fixed to the stopper 2 and several attachment tabs to the skirt 4, which extend over the inner surface of the skirt 4. The lugs of the insert are possibly shortened as much as possible to lighten the steering wheel 1. The presence of an insert makes it possible to move the center of gravity of the steering wheel 1 even further forward in the direction of the cap 2 but weighed down the flywheel 1. In the case where the skirt 4 is attached to the cap 2 by means of an insert, the insert can be manufactured directly with the skirt 4 in the mold and the connection between the insert and the skirt is reinforced during the application of a law of temperature and pressure. In a variant not shown, the skirt 6 has one or more slots, which preferably extend from the free edge 42 of the skirt 4. These slots are directed towards the cap 2 and improve the rotational balance, or "spin" 1. This "spin" effect is even more pronounced as the slots are long. In variant not shown, the braid of the skirt 4 is formed from son of synthetic materials. Alternatively, the outer surface of the skirt 4 is chemically treated to improve drag during flight.
    [0006] Alternatively, another synthetic material than polypropylene may be used. Alternatively, the strips or the son of the braid are of natural material optionally overmolded with resin. According to another variant not shown, the long fibers of the skirt 4 are grouped together to form threads which are entangled in the manner of a knit, that is to say that the threads are attached to the cross points and form sts. The fibers used are of flexible material, which allows to deform the meshes during molding. The mesh size increases by going from the attachment edge 40 to the free edge 42 and the fiber surface density decreases accordingly.
    [0007] The technical characteristics of the embodiments and variants envisaged above can be combined with one another to generate new embodiments of the invention.
    权利要求:
    Claims (14)
    [0001]
    A badminton steering wheel (1), comprising a cap (2) and a skirt (4), which has an edge (40) for fastening to the cap and a free edge (42), characterized in that the skirt ( 4) of the flywheel is formed by an entanglement (44) of long fibers (440, 442), braid or knit type.
    [0002]
    2. Steering wheel according to claim 1, characterized in that the surface density of long fibers decreases in a direction from the attachment edge (40) to the free edge (42) of the skirt.
    [0003]
    3. Steering wheel according to one of claims 1 and 2, characterized in that the entanglement son is a braid.
    [0004]
    4. Flywheel according to one of the preceding claims, characterized in that the long fibers form strips (440, 442) or entangled son.
    [0005]
    5. Flywheel according to claim 4, characterized in that the spaces (E44) between the strips (440, 442) or the skirt of the son have decreasing dimensions going from the free edge (42) to the fastening edge (40).
    [0006]
    6. Flywheel according to one of the preceding claims, characterized in that the long fibers are made of synthetic material, especially pre-stretched polypropylene with very high molecular weight.
    [0007]
    7. Steering wheel according to one of the preceding claims, characterized in that the skirt (4) has a plurality of openings (5), which are closer to the fastening edge (40) than the free edge (42) and / or slots extending from the free edge (42).
    [0008]
    8. Steering wheel according to one of the preceding claims, characterized in that the skirt (4) is generally conical but embossed and comprises stiffening ribs (10).
    [0009]
    9. A steering wheel according to one of the preceding claims, characterized in that the thickness of the skirt (4) decreases in a direction from the fastening edge (40) to the free edge (42).
    [0010]
    10. A method of manufacturing a steering wheel (1) according to one of the preceding claims, characterized in that it comprises successive steps of: a) handle a preformed entanglement of long fibers, braid or knit type, around a male part (6) of a mold, b) inserting the male part (6) of the mold into a complementary housing (80) of a female part (8) of the mold, and c) applying a law of temperature and / or pressure on the mold.
    [0011]
    11. A process according to the preceding claim, characterized in that step c) corresponds to a process of the type thermocompression molding, autoclave molding, resin injection molding in entanglement, or filament winding molding.
    [0012]
    12.- Method according to one of claims 10 and 11, characterized in that it comprises a step subsequent to step a) and prior to step b), of attaching an insert to the skirt (4) , the connection between the skirt and the insert being then reinforced during the performance of step c).
    [0013]
    13.- Method according to one of claims 10 to 12, characterized in that the entanglement is cylindrical constant diameter or preformed at the conicity of the skirt, this entanglement being shaped by fitting around the male part (6) of mold during step a).
    [0014]
    14.- Method according to one of claims 10 to 13, characterized in that it comprises a step subsequent to step c), of removing the skirt from the mold and to create openings (5) in the skirt ( 4), in particular with a laser cutting device.
    类似技术:
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    同族专利:
    公开号 | 公开日
    CN106536002B|2019-07-26|
    FR3023491B1|2017-07-21|
    KR20170028325A|2017-03-13|
    JP2017520335A|2017-07-27|
    WO2016005546A1|2016-01-14|
    CN106536002A|2017-03-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR712212A|1931-01-26|1931-09-28|Spaldinc Et Bros Ag|Shuttlecocks for racket game|
    US2626806A|1949-11-30|1953-01-27|Carlton William Charles|Shuttlecock|
    GB724265A|1952-11-10|1955-02-16|Charles John William Lashley|Improvements in shuttlecocks and in the method of manufacture thereof|
    US20020032087A1|1999-03-18|2002-03-14|Jamison Bradford C.|Play device|
    FR2911075A1|2007-01-08|2008-07-11|Babolat Vs Sa|Badminton shuttle, has cap, and flap formed of different feathers connected to each other, where each feather includes natural shank and two artificial blades which are extended on both sides of shank of animal|
    JPS6052865U|1983-08-19|1985-04-13|
    CN1076873A|1992-01-25|1993-10-06|郑树春|Shuttlecock|
    JPH07299174A|1994-04-28|1995-11-14|Mizuno Corp|Shuttle cock and method for strengthening the same|
    CN201012265Y|2006-12-06|2008-01-30|石立山|Fluorescent badminton|
    CN102527008A|2010-12-23|2012-07-04|欧明华|Badminton|
    WO2013058588A1|2011-10-22|2013-04-25|Kim Sang-Woong|Method for manufacturing shuttlecock feathers and shuttlecock|JP2021525155A|2018-03-29|2021-09-24|シャトルスターズ ビー．ブイ．|Shuttlecock and how to manufacture the shuttlecock|
    CN109016550B|2018-06-26|2021-03-02|安徽太阳体育用品有限公司|Preparation method of badminton head|
    CN110975244A|2019-12-26|2020-04-10|安徽省无为县光明体育用品有限公司|Use automatic partial shipment ware of bulb on badminton production line|
    CN113457095A|2021-07-20|2021-10-01|安徽省无为县曙光羽毛制品有限公司|Badminton assembling system based on intermittent motion control technology and assembling process thereof|
    法律状态:
    2015-06-25| PLFP| Fee payment|Year of fee payment: 2 |
    2016-01-15| PLSC| Publication of the preliminary search report|Effective date: 20160115 |
    2016-07-15| PLFP| Fee payment|Year of fee payment: 3 |
    2017-08-25| PLFP| Fee payment|Year of fee payment: 4 |
    2018-06-21| PLFP| Fee payment|Year of fee payment: 5 |
    2020-06-17| PLFP| Fee payment|Year of fee payment: 7 |
    2021-06-11| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1456733A|FR3023491B1|2014-07-11|2014-07-11|BADMINTON FLYWHEEL AND METHOD OF MANUFACTURING SUCH A WHEEL|FR1456733A| FR3023491B1|2014-07-11|2014-07-11|BADMINTON FLYWHEEL AND METHOD OF MANUFACTURING SUCH A WHEEL|
    CN201580037851.6A| CN106536002B|2014-07-11|2015-07-10|The production method of shuttlecock and shuttlecock|
    JP2017500882A| JP2017520335A|2014-07-11|2015-07-10|Badminton shuttlecock and manufacturing method thereof|
    KR1020167036754A| KR20170028325A|2014-07-11|2015-07-10|Badminton shuttlecock and production method thereof|
    PCT/EP2015/065793| WO2016005546A1|2014-07-11|2015-07-10|Badminton shuttlecock and production method thereof|
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