BE458582A - - Google Patents

Info

Publication number
BE458582A
BE458582A BE458582DA BE458582A BE 458582 A BE458582 A BE 458582A BE 458582D A BE458582D A BE 458582DA BE 458582 A BE458582 A BE 458582A
Authority
BE
Belgium
Prior art keywords
tube
frame
upper tube
frames
section
Prior art date
Application number
Other languages
French (fr)
Publication date
Publication of BE458582A publication Critical patent/BE458582A/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 SIDE-CARS, FORECARS, OR THE LIKE
    • B62K19/00Cycle frames
    • B62K19/02Cycle frames characterised by material or cross-section of frame members
    • B62K19/04Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly metallic, e.g. of high elasticity
    • B62K19/06Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly metallic, e.g. of high elasticity tubular
    • 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 SIDE-CARS, FORECARS, OR THE LIKE
    • B62K19/00Cycle frames
    • B62K19/02Cycle frames characterised by material or cross-section of frame members

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Description

       

   <Desc/Clms Page number 1> 
 



    BREVE.!:'   D'   INVENTION   
 EMI1.1 
 àiéxendre Jules BRUTIDONCKX ait Bi,A.UNu   Perfectionnement   aux cadres -pour bicyclettes et analogues 
La présente invention est relative à un perfectionnement aux   cadres 'de   bicyclettes qui gare à la rupture ,et au refoulement du tube'supérieur dans la construction-habituelle   du:

  cadre     -.pour   cycles sans en augmenter le poids ni compliquer la fabrica-   . )ion'.. , . ¯    
La pratique montre que, par suite de- chocs violents princi- palement de l'avant à l'arrière, c'est toujours le tubè supé- rieur. du cadre qui se rompt ou est refoulé, ce qui prouve que pour un poidsdéterminé- du cadre, les tubes employés et leur résistance ne sont'point appropriés aux dïfférentes sollicitations. 



   . Plusieurs solutions plus ou moins heureuses ont déjà-été   proposées,mais  celles-ci n' ont pas reçu d'application pratique par suite des complications, difficultés de fabrication (surtout' dans   les   cadres à raccords ), augmentation sensible au prix de fabrication, et méfiance compréhensible, dé la part de.l'usager 
 EMI1.2 
 dans ds /changem'ent!3 trop révolutionnaires de la forme'des ca- dras.- La présente invention obviera 1 -inconvêni.e:at de rupture .et "de r ¯ir .0 ujementpréoité .'et 2 6-sid essentiellement en oe' <lue la 'tu4a, d--'diradtibii st le t'ube de 'selle sont réunis, p ai au moins un tube de section elliptique dont .le! grand axe est placé dans , ;le  1.an. u cadre du yçle . , , .¯ -.... '. '( ". 



  'e,t dessin, annexé-sont représentés, à t.trè'd'axample, quatre mo'des.de réalisation de la présente invention-. 



  ' <l?Là fig. 1 est''une 'vue en 6,lévàtfor'd'un cadre d'homme ! un   tube'supérieur... '    
 EMI1.3 
 ' ..'La fig. 3. montré en coupe et sur plus grande échelle le tuba'supérieur suivant I-I de la fig.   1.'   
La fig. 3 donne une vue part-ielle d'un cadre à tubes supérieurs jumelés pour   homme.   
 EMI1.4 
 La fig. 4 est'une vue parti-elle.d'.un cadre dame ou mixte à simple tube supérieur. ' , '   @     La   fig. 5 montre partiellement   l'avant-d'uh   cadre .dame ou mixte   jumelé....

   ' '   
Suivant les moues'de réalisation représentés au dessin, le tube ou   les,tubes   supérieurs 1, reliant la tube de direction 2 au tube de selle sont de section'elliptique, le grand axe ' étant situé dans un plan vertical, c'est à dire dans celui du cadre du   cycle. -   
D'une manière, générale, dans les cadres des bicyclettes et analogues ce sont les tubes du bas qui supportent les violentes 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 réactions auss au pâdalage et au poiuN bup,.orté , aussi le tube supérieur ne ooit rési stei normalement qu'à de faibles sollici- tations latérales.

   Les chocs violents de face, au contraire, sont perçus par le tube supérieur, de sorte quec'est dans le 
 EMI2.2 
 pls1). au cycle que le tube supérieur aura à subir les plus brari- à:s sollicitations provoquanc la rupture ou le refoulement ne ce tube. La reüaratlon 8;3 alors très onéreuse, puisque le cadre doit t alo:ès trè aémonté COLflplèteu,8üt, et après le remplacement au 'cube défectueux, un réémaillage est nécessaire. 



   Suivant la présente invention, le tube supérieur est de section   elliptique,     'et  fixé au tube   de'   sella et au tube ae direction avec son grana axe dans le plan vertical, plan qui se confond avec le plan au cycle. 
 EMI2.3 
 



  Ainsi, sans nécessiter une au,,xux.tation ae poias au tube supérieur, et on épaisseur, pour arriver à parer'aux ennuis rencontrés avec les O,)Ql'"S cormus, il est possible de psrme'ctre au caure de r0:::.i stE:Jr à cLz,-. sollicitations plus grandes, suivant son grana axe. 



   La rigidité du Cadre ne s'en trouvera nullement modifiée puisque le tube supérieur ne doit répondre qu'à de légères sollicitations suivant son petit axe; ainsi, le fait de réduire ' 
 EMI2.4 
 l'axe horizontal au tube sup,Jrieur n'affaiblit pas le cadre, mais   rapprociie   simplement la résistance suivant le petit axe à un facteur de sécurité normal. 



   Par opposition, le tube superieur   verra.'sa   résistance' suivent son grand axe   notablement   augmentée-; ae manière à pouvoir résister aux sollicitations élevées et fréquentes situées dans le plan vertical. 



   Les fig. 1 et 4 montrent un   se'ul   tube supérieur.- 
La section du ou'des tubes supérieurs au lieu d'affecter 
 EMI2.5 
 une forme elliptique régulière peut être ovolciale. 



   Il est   entendu   que   les tubes   1 peuvent porter des nervures de   renforcement.   
 EMI2.6 
 



  '1'iHV ntion a été aéorite t illustrée à ti'cre purement Lloicatif' <5 nullement limitatif, et il va ue soi que de nombreuse8 moaifications P8UV8ut tre apportées à ses détails, sans s'ecarter ue son esprit



   <Desc / Clms Page number 1>
 



    BRIEF!: 'D' INVENTION
 EMI1.1
 to extend Jules BRUTIDONCKX ait Bi, A.UNu Further training in frames -for bicycles and the like
The present invention relates to an improvement to the frames' of bicycles which guard against the rupture, and the repression of the upper tube in the usual construction of:

  frame -.for cycles without increasing the weight or complicating the manufacture. ) ion '..,. ¯
Practice shows that, as a result of violent shocks mainly from front to back, it is always the upper tube. of the frame which breaks or is driven back, which proves that for a determined weight of the frame, the tubes used and their resistance are not suitable for the various stresses.



   . Several more or less successful solutions have already been proposed, but these have not received practical application due to complications, manufacturing difficulties (especially in frames with fittings), a significant increase in the manufacturing price, and understandable mistrust on the part of the user
 EMI1.2
 in ds / change! 3 too revolutionary of the form 'of the frames.- The present invention will obviate 1 -invêni.e: at rupture .and "de r ¯ir .0 ujementreoité.' et 2 6-sid. essentially in oe '<read the' tu4a, d - 'diradtibii and the stub of the saddle are united, p have at least one tube of elliptical section of which. . u frame of yçle.,, .¯ -.... '.' (".



  'e, t drawing, appended-are shown, at t.trè'd'axample, four mo'des.de embodiment of the present invention-.



  '<l? There fig. 1 is '' a 'view in 6, up for' a man's frame! an 'upper tube ...'
 EMI1.3
 '..' Fig. 3. shown in section and on a larger scale the upper tuba according to I-I of fig. 1. '
Fig. 3 gives a partial view of a twin upper tube frame for men.
 EMI1.4
 Fig. 4 is a view from a single top tube lady or mixed frame. ',' @ Fig. 5 partially shows the front of uh frame. Lady or mixed paired ....

   ''
According to the molds' of realization shown in the drawing, the tube or the upper tubes 1, connecting the steering tube 2 to the seat tube are of 'elliptical section, the major axis' being located in a vertical plane, it is to say in that of the cycle frame. -
In general, in the frames of bicycles and the like, it is the bottom tubes that support the violent

 <Desc / Clms Page number 2>

 
 EMI2.1
 This also reacts to paddling and lifting, so the upper tube normally only resists low lateral stresses.

   Strong frontal shocks, on the contrary, are perceived by the upper tube, so that it is in the
 EMI2.2
 pls1). during the cycle that the upper tube will have to undergo the most bruis- a: s stresses causing rupture or repression of this tube. Reüaratlon 8; 3 then very expensive, since the frame must be very assembled COLflpleteu, 8üt, and after replacement with the defective cube, re-enamelling is necessary.



   According to the present invention, the upper tube is of elliptical section, 'and fixed to the saddle tube and to the steering tube with its large axis in the vertical plane, a plane which merges with the cycle plane.
 EMI2.3
 



  Thus, without requiring an au ,, xux.tation ae poias at the upper tube, and one thickness, to manage to overcome the problems encountered with the O,) Ql '"S cormus, it is possible to apply to the caure of r0 :::. i stE: Jr to cLz, -. greater stresses, along its large axis.



   The rigidity of the Frame will not be changed in any way since the upper tube must only respond to slight stresses along its small axis; thus, reducing '
 EMI2.4
 the horizontal axis to the upper tube, Jrieur does not weaken the frame, but simply relates the resistance along the minor axis to a normal safety factor.



   In contrast, the upper tube will see its resistance follow its major axis markedly increased; ae so as to be able to withstand high and frequent stresses located in the vertical plane.



   Figs. 1 and 4 show a single upper tube.
The section of the upper tubes instead of affecting
 EMI2.5
 a regular elliptical shape can be ovolcial.



   It is understood that the tubes 1 can carry reinforcing ribs.
 EMI2.6
 



  'The iHV ntion has been illustrated for purely illustrative purposes' <5 in no way limiting, and it goes without saying that many modifications must be made to its details, without departing from its mind.


    

Claims (1)

R E S U M E EMI2.7 1. :J:-'erfectiol1nBr1l..:)c.l aux caures de bïcyclettes et analogues, car ctarise en ci que 1- cube 1..-:' a.i.ceotioll et le tube (.Le selle sont réunis par au moins an tube supérieur de section ellipti- EMI2.8 que Qoüt le grand axa est placé aans le plan au caare du cycle. ABSTRACT EMI2.7 1.: J: - 'erfectiol1nBr1l .. :) cl with bicycle cures and the like, because it is only 1- cube 1 ..-:' aiceotioll and the tube (. The saddle are joined by at least one tube upper section elliptical EMI2.8 that when the great axa is placed in the plane at the center of the cycle. 2. perfectionnement aux cadres Ge bicyclettes 'et analogues suivant 1, co.rtct3ris; sn ce que la section au ou (les tubes supérieurs au -1i, U a',-:.ffect3r un- forme ëllip'ciqus régulière peut être ovoïdele. 2. advanced training for bicycle frames and the like according to 1, co.rtct3ris; if the section at or (the tubes greater than -1i, U a ', - :. ffect3r a regular elliptical shape can be ovoid.
BE458582D BE458582A (en)

Publications (1)

Publication Number Publication Date
BE458582A true BE458582A (en) 1900-01-01

Family

ID=111850

Family Applications (1)

Application Number Title Priority Date Filing Date
BE458582D BE458582A (en)

Country Status (1)

Country Link
BE (1) BE458582A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2477495A1 (en) * 1980-03-07 1981-09-11 Mercier Ets Frame for two wheeled bicycle - has top tube of elliptical section and others have elliptical ends

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2477495A1 (en) * 1980-03-07 1981-09-11 Mercier Ets Frame for two wheeled bicycle - has top tube of elliptical section and others have elliptical ends

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