• 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:
    This racket tensioning system (S) comprises a traction module (1) adapted to exert a pulling force on a rope (C) of a racket, including a jaw (3) comprising two jaws (32) opposite adapted to clamp together the rope (C) during its tensioning, and a traction head (5) on which the jaw (3) is mounted, the jaws (32) being movable in translation simultaneous with the traction head (5) and arranged so that the translation of the jaws (32) causes their clamping around the rope (C), a rail (7) on which the traction head (5) of the module of traction (1) is mounted movable in translation, and a traction motor adapted to drive in translation the traction head (5) of the traction module (1) on the rail (7) via a drive system (13). ). The system comprises means (15) for transmitting motion between the traction head drive system (13) and the jaws (32), said transmission means being capable of initiating the translation of the jaws (32). ) with respect to the pulling head (5) in the tightening direction of the rope (C).
    公开号:FR3027810A1
    申请号:FR1460515
    申请日:2014-10-31
    公开日:2016-05-06
    发明作者:Herve Cerf
    申请人:Babolat VS SA；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a racquet string tensioning system and a stringing machine comprising such a tensioning system. In the field of racket sports, such as tennis, badminton, squash, or any other racket sport necessitating the use of a sieve of tensioned ropes, it is known to use stringing machines comprising a tensioning system. some ropes. Such a system allows the stringer to set up the strings and stretch them using a device using, for example, an electric motor. It is known to keep the ropes in a jaw comprising two jaws clamped against each other around the rope. Once the rope is held in the jaw, the tensioning system is engaged and the jaw is subjected to a translational movement inducing the tensioning of the rope.
    [0002] The maintenance of the rope in the jaw is generally obtained by placing the rope between the jaws, then folding it at an angle allowing the translation of the jaws along their longitudinal axis, which initiates the clamping against each other jaws, thanks to adapted slides. Such an operation has the disadvantage of requiring an action by the operator at each tensioning, which implies a loss of time when the stringer in question has a large workload. In addition, if the action of the operator leads to excessive tightening of the rope, it can be damaged, which increases the risk of subsequent breakage of the rope. It is these drawbacks that the invention intends to remedy more particularly by proposing a new racket tensioning system whose operation allows a simpler and faster work of the operator, and an optimal clamping of the rope in the bit. To this end, the invention relates to a racquet string tensioning system, comprising: a traction module adapted to exert a pulling force on a racket rope, including a jaw comprising two opposing jaws adapted to tightening the rope between them during its tensioning, and a traction head on which the jaw is mounted, the jaws being movable in translation simultaneously with respect to the traction head and arranged so that the translation of the jaws causes their clamping around the rope, a rail on which the traction head of the traction module is mounted movable in translation, and - a traction motor adapted to drive in translation the traction head of the traction module on the rail, via a system of traction. 'training.
    [0003] This tensioning system is characterized in that it comprises means of transmission, movement between the driving system of the traction head and the jaws, these transmission means being able to initiate the translation of the jaws relative to at the pulling head in the tightening direction of the rope. Thanks to the invention, the rope is automatically clamped into the jaw using the translational movement generated by the traction motor. Thus, the stringer no longer needs to hold the rope in the jaw or at an angle to tighten the jaws, which allows it to work faster and reducing the risk of accidental damage to the rope when tightening in the bit. According to advantageous but non-mandatory aspects of the invention, such a tensioning system may incorporate one or more of the following features, taken in any technically permissible combination: the transmission means comprise a lever pivotally mounted on the traction head; , a part of the lever being connected to the jaws, one end of the lever being connected to the drive system so that the translation of the drive system causes the rotation of the lever relative to the traction head about an axis perpendicular to the direction translation of the traction head. - The drive system comprises a belt or chain provided with a plate having an opening in which the end of the lever opposite the jaws is inserted. - The opening comprises a surface adapted to cooperate by a plane support with a surface of the lever for driving the traction head in translation along the rail during the tensioning of the rope. - The rotation of the lever relative to the traction head is blocked when the jaws are tightened around the rope. - The portion of the lever secured to the jaws is simultaneously connected to each of the jaws by a rod provided with an elastic element configured so that the clamping of the jaws occurs before the translation of the traction head on the rail. The elastic element is a spiral spring. The rod is slidably mounted in grooves of the jaws so that the rotation of the rod causes the translation of the jaws. - Once the rope has been stretched, the jaw is able to be loosened under the action of the traction motor. The invention also relates to a cording machine comprising a tensioning system as mentioned above.
    [0004] The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of a system for tensioning racket ropes according to its principle, made by way of example non-limiting with reference to the accompanying drawings in which: Figure 1 is a section of a tensioning system according to the invention, in a first configuration; Figure 2 is a section on the plane 11-11 of the tensioning system of Figure 1; Figure 3 is a top view along the arrow III of the tensioning system of Figures 1 and 2; there is indicated in 1-1 the sectional plane of Figure 1; Figure 4 is a section along the plane IV-IV of a tensile module of the tensioning system of Figures 1 to 3; Fig. 5 is an enlarged sectional view similar to a portion of Fig. 1, of the tensioning system of Figs. 1 to 3, in a second configuration; FIG. 6 is a view similar to FIG. 2 of the tensioning system in the configuration of FIG. 5; FIG. 7 is an enlarged view of detail VII in FIG. 3 of the tensioning system in the configuration of FIGS. 5 and 6; Figure 8 is a section similar to Figure 4, in the configuration of Figures 5-7; Figure 9 is a section similar to Figure 1, the tensioning system of Figures 1 to 3 and 5 to 7, in a third configuration. FIGS. 1 to 9 show a tensioning system S. This tensioning system S is intended to form part of a racking machine not shown, by exerting a traction force T on a rope C. a racket not shown, held in place in the stringing machine. The S tensioning system is suitable for stringing rackets for all types of racket sports, such as tennis, badminton, squash, etc. The system S comprises a traction module 1 adapted to exert the traction force T. The traction module comprises a jaw 3 including two jaws 31 and 32 opposite adapted to tighten the rope C during traction. The jaw 3 is mounted on a traction head 5, itself mounted to move in translation on a rail 7, along a traction axis X-X '. The rail 7 is mounted on a frame 9 of the tensioning system S. The system S also comprises a traction motor 11, fixed on the frame 9, and capable of driving in translation, along the axis X-X ', the traction head 5 along the rail 7, via a drive system, comprising a belt 13 stretched between a drive pulley 131, driven directly or indirectly by the traction motor 11, and a pulley 133 located near an opposite end of the frame 9 relative to the drive pulley 131. Alternatively not shown, the system S may comprise another type of drive system, such as, for example, a chain, a rack, etc. FIGS. 1 to 4 show the initial configuration of the tensioning system S. In this configuration, the traction module 1 is positioned at a first end 72 of the rail 7, located on the right in FIGS. 6 and 8, and the jaws 31 and 32 are distant from each other, as can be seen in Figure 2.
    [0005] FIGS. 5 to 8 show a clamping configuration of the jaw 3, in which the jaws 31 and 32 are clamped against each other, as can be seen in FIGS. 4 and 6, the traction module 1 being always at the same position on the rail 7. In this configuration, the rope C positioned between the jaws 31 and 32 is firmly held in place in the jaw 3 and ready to be stretched by the application of the traction force T by the translation according to the XX 'axis of the traction module 1. FIG. 9 corresponds to a configuration of the end of traction of the system S, in which the rope C is tensioned, the traction module 1 being positioned at a second end 74 of the rail 7, opposite at the first end 72 and located on the left in FIGS. 1 and 9.
    [0006] The jaws 31 and 32 are movable relative to the traction head 5 along a longitudinal axis X3 which is inclined with respect to the axis X-X '. The jaws 31 and 32 are mounted in a chute 51 of the traction head 5 and their translation is authorized by rows of balls 53, arranged in the chute 51 so that the translation along the axis X3 of the jaws 31 and 32 causes their approximation in a transverse direction YY 'and their clamping around the rope C. The inner faces 510a of the longitudinal walls 510 of the chute 51 comprise for this purpose longitudinal grooves 512 in which the balls 53 are housed. The outer faces 314 and 324 of the jaws 31 and 32 comprise longitudinal grooves 314a and 324a in which the balls 53 are housed, opposite the grooves 512 of the walls 510.
    [0007] The grooves 512, 314a and 324a are bevelled so that the alignment of the balls 53, which defines axes A53, forms an angle [3 with respect to the axis X3. The grooves 512, 314a and 324a converge towards the axis X3 towards the end 72, so that the translation of the jaws 31 and 32 along the axis X3 towards the end 72 according to the arrows F3 in FIG. 4 induces the clamping of the jaws 31 and 32 according to the arrows F3 'in Figure 8. To initiate the translation along the axis X3 of the jaws 31 and 32 to keep the rope C tight in the jaw 3, the tensioning system S comprises means for transmitting movement between the belt 13 and the jaws 31 and 32, these means being able to initiate the translation in the chute 51 of the jaws 31 and 32 relative to the traction head 5 in the tightening direction of the rope C, then to transmit a translational movement to the traction head 5 relative to the rail 7 when the jaws 31 and 32 are clamped against each other. Thus, the clamping of the jaws 31 and 32 is obtained by means of the traction motor 11, without requiring particular manipulation of the rope C by the operator. This allows a faster work rate and a more uniform tightening of the ropes in the jaw 3, which reduces the risk of damage to the ropes. The motion transmission means comprise a lever 15 pivotally mounted on the traction head 5 about an axis Y15 perpendicular to the axis X-X 'and parallel to the direction YY'. A portion 151 of the lever 15 is mechanically connected to the jaws 31 and 32, while an end 153 of the lever 15, opposite the jaws 31 and 32, is connected to the belt 13 so that the translation of the belt 13 according to the XX 'axis causes the rotation of the lever 15 relative to the traction head 5 about the axis Y15. The belt 13 is provided for this purpose with a plate 135 having an opening 136 in which the end 153 of the lever 15 is inserted. The portion 151 of the lever 15 is simultaneously connected to each of the jaws 31 and 32 by a rod 155 provided with an elastic element, such as a spiral spring 156, which makes it possible to reduce the resistance exerted by the jaws 31 and 32 to the against the rotation of the lever 15 around the axis Y15. In variant not shown, the rod 155 may comprise another type of elastic element. The tensioning system S operates according to the following principle: in the initial configuration of the system S, the rope C is placed between the jaws 31 and 32. To tighten the rope C in the jaw 3, the operator, by example by means of a button or a pedal, engages the traction motor 11, which drives in translation the belt 13 along the axis X-X ', in the direction of the arrow F1. Thanks to the cooperation between the opening 136 and the end 153, the lever 15 is rotated about the axis Y15 in the direction of the arrow F2. As the portion 151 of the lever 15 is connected to the jaws 31 and 32 by the rod 155 provided with the spring 156, the resistance to translation of the traction module 1 provided by the jaws 31 and 32 is less than the resistance to the translation of the module 1 of the traction force provided by the friction forces between the traction head 5 and the rail 7. The jaws 31 and 32 thus undergo a translational movement along the arrow F3 to their tight configuration visible in Figures 3 to 6. The end of the rod 155 forms a rectilinear part 157 parallel to the direction YY 'which is inserted in grooves, only one of which is visible with the reference 320, of the jaws 31 and 32, so that the part 157 slides in the jaws 31 and 32 and that the rotation of the rod 155 about the axis Y15 causes the translation of the jaws 31 and 32 along the axis X3. When the jaws 31 and 32 are tightened, the resistance to rotation of the lever relative to the traction head 5 increases and becomes greater than the resistance of the friction forces which exist between the rail 7 and the traction head 5. rotation of the lever 15 is then blocked by the resistance of the jaws 31 and 32 in a substantially vertical position relative to the axis X-X ', visible in Figure 5 and in which a surface 136a of the opening 136 is in support plane with a surface 153a of the end 153. The force exerted by the belt 13 on the lever 15 is thus transmitted to the traction head 5 by means of this flat support, and the traction head 5 is then driven in translation according to the axis XX 'in the direction of the arrow F4. This makes it possible to tension the rope C. When the traction module 1 ends its travel along the rail 7, against a stop 90 of the frame 9, in the vicinity of the end 74, the rope C is stretched. The operator, in known manner, blocks the rope stretched on the sieve of the racket, with the aid of a not shown clamp holder, and can then release the rope C of the jaw 3 and initiate the return of the traction module 1 to its initial position. The release of the rope C of the jaw 3 is also effected under the action of the motor 11. For this, the operator controls the motor 11 in the opposite direction, so that the belt 13 is driven along the axis XX 'in the direction of arrow F5 in Figure 9.
    [0008] The end 153 comes into contact with an edge 136b of the opening 136 opposite the surface 136a, which has the effect of causing the rotation of the lever 15 relative to the traction head 5, in the direction of the arrow F6 to its position in Figure 1. This rotation of the lever 15 causes, through the rod 155, the translation of the jaws 31 and 32 according to the arrow F7, and the rope C is thus loosened the jaw 3.
    [0009] When the lever 15 has returned to its initial position, relative to the traction head 5 of FIG. 1, the translation movement of the belt 13 is transmitted to the traction head 5, which in turn undergoes a movement of translation along the arrow F8, causing the return of the traction module 1 in its initial position relative to the rail 7 of Figure 1. Once returned to the right end 72 of the rail 7, the traction module 1 is ready to receive a new chord C and repeat the tensioning operation.
    权利要求:
    Claims (10)
    [0001]
    A racket tensioning system (S) comprising: a traction module (1) adapted to exert a pulling force (T) on a rope (C) of a racket, including a jaw (3) comprising two jaws (31, 32) opposite adapted to clamp together the rope (C) during its tensioning, and a traction head (5) on which the jaw (3) is mounted, the jaws (31, 32) being movable in simultaneous translation with respect to the traction head (5) and arranged so that the translation of the jaws (31, 32) causes their clamping around the rope (C), - a rail ( 7) on which the traction head (5) of the traction module (1) is mounted to move in translation, and - a traction motor (11) capable of driving in translation the traction head (5) of the traction module ( 1) on the rail (7), via a drive system (13), characterized in that it comprises means (15) for transmitting motion between the sys driving system (13) of the traction head (5) and the jaws (31, 32), these transmission means being able to initiate the translation (F3) of the jaws (31, 32) relative to the head of the pulling (5) in the tightening direction of the rope (C).
    [0002]
    2.- System according to claim 1, characterized in that the transmission means comprise a lever (15) pivotally mounted on the traction head (5), a portion (151) of the lever (15) being connected to the jaws (31). , 32), one end (153) of the lever (15) opposite the jaws (31, 32) being connected to the drive system (13) so that the translation of the drive system (13) causes the lever to rotate (15) with respect to the traction head (5) about an axis (Y15) perpendicular to the translation direction (X-X ') of the traction head (5).
    [0003]
    3.- System according to claim 2, characterized in that the drive system comprises a belt (13) or a chain provided with a plate (135) having an opening (136) in which the end (153) of the lever (15) opposite the jaws (31, 32) is inserted.
    [0004]
    4.- System according to claim 3, characterized in that the opening (136) comprises a surface (136a) adapted to cooperate by a plane support with a surface (153a) of the lever (15) for driving the traction head ( 5) in translation along the rail (7) during tensioning of the rope (C).
    [0005]
    5.- System according to one of claims 2 to 4, characterized in that the rotation of the lever (15) relative to the traction head (5) is blocked when the jaws (31, 32) are clamped around the rope (C).
    [0006]
    6.- System according to one of claims 3 to 5, characterized in that the portion of the lever (151) secured to the jaws (31, 32) is connected simultaneously to each of the jaws (31, 32) by a rod (155 ) provided with an elastic element (156) configured so that the clamping of the jaws (31, 32) occurs before the translation of the traction head (5) on the rail (7).
    [0007]
    7.- System according to claim 6, characterized in that the elastic element is a spiral spring (156).
    [0008]
    8.- System according to one of claims 2 to 7, characterized in that the rod (155) is slidably mounted in grooves (320) of the jaws (31, 32) so that the rotation of the rod (155) causes translation of the jaws (31, 32).
    [0009]
    9.- System according to one of the preceding claims, characterized in that once the rope (C) has been stretched, the jaw (3) is able to be released under the action of the traction motor (11) .
    [0010]
    10. A stringing machine for rackets, comprising a string tensioning system (S) according to one of the preceding claims.
    类似技术:
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    FR2484265A1|1981-12-18|Machine for stringing sports racquets - has strings held taught by lever system supporting counterweight to move upper arm
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    BE341569A|1927-05-31|
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    同族专利:
    公开号 | 公开日
    TWI675684B|2019-11-01|
    TW201636076A|2016-10-16|
    FR3027810B1|2016-11-11|
    US9597556B2|2017-03-21|
    US20160121176A1|2016-05-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    US4417729A|1982-02-26|1983-11-29|Prince Manufacturing, Inc.|Racket stringing apparatus|
    US4706955A|1986-05-20|1987-11-17|Sumiaty Ngadi|Racket frame clamp for stringing machine|
    US8206249B1|2011-04-08|2012-06-26|Herbert H. Wise|Electronic racquet stringing machine|
    US3988022A|1975-06-04|1976-10-26|Tennis Machines, Inc.|Racket stringing machine|
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    US9067111B2|2013-04-22|2015-06-30|Vaclav Zdrazila|Racket stringing machine|US9770631B2|2016-01-20|2017-09-26|John C. Tarrant|Systems, methods and devices for tensioning racket string|
    TWI650160B|2018-03-09|2019-02-11|愛町實業有限公司|Racket stringing machine|
    CN208229329U|2018-03-26|2018-12-14|马运斗|A kind of anchoring of threader|
    CN110548268B|2018-05-31|2021-04-30|丰英有限公司|Wire clamping device|
    CN110652771B|2019-08-28|2021-12-17|宁夏共享机床辅机有限公司|Circulating filter belt tensioning device and filter|
    US11185960B2|2019-12-31|2021-11-30|Min Wei Lee|Positioning structure of clamper of threading machine for racket|
    法律状态:
    2015-10-22| PLFP| Fee payment|Year of fee payment: 2 |
    2016-05-06| PLSC| Search report ready|Effective date: 20160506 |
    2016-10-10| PLFP| Fee payment|Year of fee payment: 3 |
    2017-09-21| PLFP| Fee payment|Year of fee payment: 4 |
    2018-09-21| PLFP| Fee payment|Year of fee payment: 5 |
    2019-10-07| PLFP| Fee payment|Year of fee payment: 6 |
    2020-09-14| PLFP| Fee payment|Year of fee payment: 7 |
    2021-09-10| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1460515A|FR3027810B1|2014-10-31|2014-10-31|RACKET STRAP TENSIONING SYSTEM AND CORDERING MACHINE COMPRISING SUCH A SYSTEM|FR1460515A| FR3027810B1|2014-10-31|2014-10-31|RACKET STRAP TENSIONING SYSTEM AND CORDERING MACHINE COMPRISING SUCH A SYSTEM|
    US14/924,086| US9597556B2|2014-10-31|2015-10-27|System for tensioning a racket string and stringing machine comprising such a system|
    TW104135914A| TWI675684B|2014-10-31|2015-10-30|System for tensioning a racket string and stringing machine comprising such a system|
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