BE527366A - - Google Patents

Info

Publication number
BE527366A
BE527366A BE527366DA BE527366A BE 527366 A BE527366 A BE 527366A BE 527366D A BE527366D A BE 527366DA BE 527366 A BE527366 A BE 527366A
Authority
BE
Belgium
Prior art keywords
fork
connector
barrels
fixed
handlebars
Prior art date
Application number
Other languages
French (fr)
Publication of BE527366A publication Critical patent/BE527366A/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE
    • B62K25/00Axle suspensions
    • B62K25/04Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K25/06Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms
    • B62K25/08Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms for front wheel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)

Description

       

   <Desc/Clms Page number 1> 
 



  FOURCHE TELESCOPIQUE. 



   Dans les fourches avant télescopiques, qui sont actuellement d'un usage fréquent dans les motocyclettes et les vélomoteurs, les deux fourreaux extérieurs ou canons fixes, dans lesquels coulissent les tubes montés élastiquement et portant la broche de la roue, sont réunis à la tige du guidon par des raccords de fourche. Dans ce cas, le guidon est soit vissé à la tige à la manière d'un guidon de bicyclette ordinaire, soit attaché au raccord de fourche supérieur par des griffes spéciales ou organes de fixation analogues. 



   Contrairement à ces constructions habituelles et selon l'invention, telle qu'appliquée à une fourche télescopique de ce genre, dont les deux canons fixes sont reliés à la tige du guidon par des raccords de fourche, les organes, qui servent à l'assemblage des canons fixes avec le raccord de fourche supérieur, servent aussi à la fixation du guidon. 



   Cette mesure permet d'abaisser le prix de revient de telles fourches. Néanmoins, on réalise une amélioration très notable de la stabilité comparativement aux systèmes anciens, où le guidon était fixé à la tige de guidon, ou bien réuni au raccord de fourche par des organes de fixation spéciaux, cette amélioration étant due au fait que, désormais, les deux canons fixes sont encore en outre réunis l'un à l'autre par l'intermédiaire du guidon et que les efforts de direction sont transmis directement à ces canons. En d'autres termes la partie du guidon située entre les organes de fixation forme désormais un organe portant de la fourche. 



   Les organes de fixation consistent avantageusement en deux vis qui passent par des forages transversaux du guidon et par des forages appropriés du raccord de fourche, qui se vissent dans des écrous fixés dans la partie supérieure des deux canons fixes et qui assurent ainsi l'assembla- 

 <Desc/Clms Page number 2> 

 ge du guidon, du raccord de fourche et de ces canons. De préférence, le raccord de fourche supérieur porte le phare à l'aide d'organes d'attache solidaires de ce raccord. 



   En plus d'une réduction supplémentaire du prix de revient, cette disposition permet de réaliser une construction esthétique et particulièrement attrayante. 



   Un exemple d'exécution d'une fourche télescopique selon l'invention est représentée dans les dessins annexés:
La figure 1 est une vue latérale des organes supérieurs de la fourche. 



   La figure 2 est une vue antérieure de la fourche, par exemple en coupe partielle suivant II-II de la figure 1. 



   La figure 3 est une vue en plan prise dans le sens de la flèche III de la figure 1. 



   Les canons fixes 1 de la fourche télescopique, dans lesquels sont montés à coulissement et élastiquement les   fourreaux   intérieurs ou canons mobiles,, comme il est connu en soi, sont réunis par des raccords de fourche 2, 3 à la tige de guidon 4 montée de la façon habituelle dans le tube de direction 5 de l'engin. La fixation entre la tige de direction 4 et les raccords de fourche 2, 3 est assurée au. moyen d'organes   à   vis   6-7.   



   Le guidon 8 présente deux forages transversaux séparés par une distance correspondant à l'écartement des canons fixes et traversés par les deux vis 9 qui traversent également le raccord de fourche 2 pour se visser dans les écrous 10 soudés dans les canons fixes 1, au voisinage des extrémités supérieures de ceux-ci. Pour assurer un meilleur contact,   on   prévoit des rondelles 11, 12 entre les têtes de boulons et le guidon, ainsi qu'entre ce dernier et le raccord de fourche. Afin d'assurer la position correcte du raccord de fourche par rapport aux canons fixes, on insère encore dans ceux-ci par en haut des pièces intercalaires 13 dont les embases 14 s'adaptent dans les forages du raccord de fourche. Les écrous 10 servent à la fois de butées et d'organes de centrage pour les ressorts 15.

   Finalement, le raccord supérieur 2 est muni de bras 17 en surplomb vers l'avant, entre lesquels est maintenu le phare 18. 



   Il ressort de ce qui précède que le tronçon du guidon compris entre les deux vis 9 est devenu un organe portent de l'ensemble de la fourche. Ceci a pour effet de soulager le raccord supérieur 2, tandis que les efforts de direction partant du guidon sont transmis directement aux canons fixes 1 de la fourche. Les dessins font en outre apparaître les formes nettes et dégagées, rendues possible par les dispositions selon l'invention. 



  Il convient également de retenir l'élimination d'organes et de surfaces travaillées, réalisées vis-à-vis des constructions antérieures et qui permet de réduire le prix de revient de l'ensemble de la fourche. 



   REVENDICATIONS. 



   1. - Fourche télescopique dont les deux canons fixes sont reliés à la tige de direction par des raccords de fourche, caractérisée en ce que les organes (vis 9), qui servent à l'assemblage des canons fixes (1) avec le raccord de fourche supérieur (2) , servent aussi à la fixation du guidon (8) .



   <Desc / Clms Page number 1>
 



  TELESCOPIC FORK.



   In telescopic front forks, which are currently in frequent use in motorcycles and mopeds, the two outer sleeves or fixed barrels, in which the elastically mounted tubes and carrying the wheel spindle slide, are joined to the stem of the wheel. handlebars by fork fittings. In this case, the handlebars are either screwed to the stem in the manner of an ordinary bicycle handlebar, or attached to the upper fork connector by special claws or similar fasteners.



   Unlike these usual constructions and according to the invention, as applied to a telescopic fork of this type, the two fixed barrels of which are connected to the handlebar stem by fork connectors, the organs, which are used for assembly fixed barrels with the upper fork connection are also used to fix the front sight.



   This measure makes it possible to lower the cost price of such forks. Nevertheless, there is a very noticeable improvement in stability compared to old systems, where the handlebars were fixed to the handlebar stem, or else joined to the fork connection by special fasteners, this improvement being due to the fact that, now , the two fixed barrels are furthermore joined to one another by means of the front sight and that the steering forces are transmitted directly to these barrels. In other words, the part of the handlebars located between the fixing members now forms a member carrying the fork.



   The fasteners advantageously consist of two screws which pass through transverse holes in the handlebar and through suitable holes in the fork connector, which are screwed into nuts fixed in the upper part of the two fixed barrels and which thus ensure the assembly.

 <Desc / Clms Page number 2>

 ge of the front sight, fork connector and these barrels. Preferably, the upper fork connector carries the headlight with the aid of fastening members integral with this connector.



   In addition to an additional reduction in the cost price, this arrangement makes it possible to achieve an aesthetic and particularly attractive construction.



   An exemplary embodiment of a telescopic fork according to the invention is shown in the accompanying drawings:
Figure 1 is a side view of the upper organs of the fork.



   Figure 2 is a front view of the fork, for example in partial section along II-II of Figure 1.



   Figure 3 is a plan view taken in the direction of arrow III in Figure 1.



   The fixed barrels 1 of the telescopic fork, in which the inner sheaths or mobile barrels are slidably and elastically mounted, as is known per se, are joined by fork connectors 2, 3 to the handlebar stem 4 mounted from the usual way in the steering tube 5 of the machine. The attachment between the steering rod 4 and the fork connectors 2, 3 is ensured at. means of screw members 6-7.



   The front sight 8 has two transverse holes separated by a distance corresponding to the spacing of the fixed barrels and crossed by the two screws 9 which also pass through the fork connector 2 to be screwed into the nuts 10 welded in the fixed barrels 1, in the vicinity of the upper ends of these. To ensure better contact, washers 11, 12 are provided between the bolt heads and the handlebars, as well as between the latter and the fork connector. In order to ensure the correct position of the fork connector with respect to the fixed barrels, insert pieces 13 are still inserted into them from above, the bases of which 14 fit into the holes in the fork connector. The nuts 10 serve both as stops and as centering members for the springs 15.

   Finally, the upper connection 2 is provided with arms 17 overhanging towards the front, between which the headlight 18 is held.



   It emerges from the above that the section of the handlebars included between the two screws 9 has become a bearing member of the entire fork. This has the effect of relieving the upper connection 2, while the steering forces from the handlebars are transmitted directly to the fixed barrels 1 of the fork. The drawings also show the clear and clear shapes, made possible by the arrangements according to the invention.



  It is also advisable to retain the elimination of parts and worked surfaces, carried out vis-à-vis previous constructions and which makes it possible to reduce the cost price of the entire fork.



   CLAIMS.



   1. - Telescopic fork whose two fixed barrels are connected to the steering rod by fork connectors, characterized in that the members (screws 9), which are used to assemble the fixed barrels (1) with the connection of upper fork (2), are also used to fix the handlebars (8).


    

Claims (1)

2. - Fourche télescopique selon la revendication 1, caractérisée en ce que les organes d'assemblage consistent en deux vis (9) qui passent par des forages transversaux du guidon (8) et par des forages appropriés du raccord de fourche (2), qui se serrent dans des écrous (10) fixés dans le tronçon supérieur des deux canons fixes (1) et qui assurent ainsi l'assem blage du guidon, du raccord de fourche et des canons. <Desc/Clms Page number 3> 2. - Telescopic fork according to claim 1, characterized in that the assembly members consist of two screws (9) which pass through transverse holes in the handlebar (8) and through suitable holes in the fork connector (2), which are tightened in nuts (10) fixed in the upper section of the two fixed barrels (1) and which thus ensure the assembly of the handlebars, the fork connector and the barrels. <Desc / Clms Page number 3> 3. - Fourche télescopique selon la revendication 1 ou 2 caractérisée en ce que le raccord de fourche supérieur (2) supporte le phare (18) au moyen d'organes d'attache (17) solidaires de ce raccord. en annexe 2 dessins. 3. - Telescopic fork according to claim 1 or 2 characterized in that the upper fork connector (2) supports the headlight (18) by means of fastening members (17) integral with this connector. in appendix 2 drawings.
BE527366D BE527366A (en)

Publications (1)

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