CH216857A

CH216857A - Leaf spring suspension device.

Info

Publication number: CH216857A
Authority: CH
Inventors: Bugatti Ettore
Original assignee: Bugatti Ettore
Priority date: 1938-12-06
Filing date: 1940-01-03
Publication date: 1941-09-15
Also published as: BE437556A

Description

  

  Dispositif de suspension à lames de ressort.    La présente     invention    a pour objet un  dispositif de suspension à lames de ressort,  caractérisé en ce qu'il comprend au moins  deux organes de friction disposés entre deux  lames contiguës et fixés sur au moins une de  ces lames.  



  La figure unique du dessin     annexé    re  présente, à titre     d'exemple,    une forme d'exé  cution du dispositif faisant l'objet de     l'inven-          tïon.    Le     dispositif    de suspension comprend  des lames a qui peuvent être en nombre quel  conque. Entre deux de ces lames contiguës  sont interposés des organes de friction b  constitués par exemple par des pastilles ou  taquets.  



  Ces taquets peuvent être en métal, par  exemple en métal     antifriction    soudé sur la  lame, ou en bronze au plomb également soudé  sur la lame, ou encore en bronze brasé à  basse température.  



  Les dimensions (surface et épaisseur) de  ces pastilles ou taquets, leur nombre et leur    répartition le long des lames peuvent     être     bien     entendu    modifiés à volonté.  



  Les taquets peuvent également être cons  titués par une matière non métallique, par  exemple de la fibre, du tissu d'amiante im  prégné, de résine synthétique moulée. Leur  fixation aux lames se fait alors par exemple  par collage ou vulcanisation.  



  On pourrait encore fixer les taquets a sur  les lames en les engageant partiellement dans  de petites cuvettes prévues. sur lesdites lames.  Ces cuvettes sont par exemple ménagées dans  les lames ou rapportées sur celles-ci et la  partie en saillie de la pastille venant en con  tact avec la lame contiguë.  



  Le dispositif décrit utilisé     notamment     dans les     suspensions    pour voitures automo  biles, wagons ou autres     véhicules,    présente  les avantages suivants  1. Grâce à la présence des taquets ou pas  tilles de     friction,    toutes les lames de ressort,  même en cas de déformation, conservent entre  elles un appui.      2. Le graissage est assuré d'une manière  parfaite par suite des espaces formés entre  les taquets, espaces qui sont remplis de  graisse, celle-ci étant retenue sur le ressort  par une gaine protectrice.  



  3. La flexibilité du ressort à lames reste  constante, les coefficients de frottement ne  changent pas lorsque la suspension est en  service.



  Leaf spring suspension device. The present invention relates to a leaf spring suspension device, characterized in that it comprises at least two friction members arranged between two contiguous leaves and fixed to at least one of these leaves.



  The single figure of the appended drawing shows, by way of example, one embodiment of the device forming the subject of the invention. The suspension device comprises a blades which may be any number of conch. Between two of these contiguous blades are interposed friction members b constituted for example by pellets or cleats.



  These cleats can be made of metal, for example of anti-friction metal welded to the blade, or of lead bronze also welded to the blade, or of bronze brazed at low temperature.



  The dimensions (surface and thickness) of these pellets or cleats, their number and their distribution along the blades can of course be modified at will.



  The cleats can also be made of a non-metallic material, for example fiber, impregnated asbestos fabric, molded synthetic resin. They are then attached to the blades, for example by gluing or vulcanization.



  One could still fix the tabs a on the blades by partially engaging them in small bowls provided. on said blades. These cuvettes are for example formed in the blades or attached thereto and the projecting part of the pellet coming into contact with the contiguous blade.



  The device described, used in particular in the suspensions for motor cars, wagons or other vehicles, has the following advantages 1. Thanks to the presence of the friction cleats or no loops, all the spring leaves, even in the event of deformation, retain between they support. 2. The lubrication is ensured in a perfect way as a result of the spaces formed between the cleats, spaces which are filled with grease, the latter being retained on the spring by a protective sheath.



  3. The flexibility of the leaf spring remains constant, the friction coefficients do not change when the suspension is in use.

Claims

CLAIM A suspension device with spring blades, characterized in that it comprises at least two friction members arranged in two contiguous blades and fixed to at least one of these blades. SUB-CLAIMS: 1. Device according to claim, ca ractérisé in that the aforesaid members are constituted by metal cleats. 2. Device according to claim and sub-claim 1, characterized in that the cleats are made of antifriction metal welded to the blade. 3. Device according to claim and sub-claim 1, characterized in that the cleats are made of soldered lead bronze. 4.

Device according to claim and sub-claim 1, characterized in that the cleats are made of bronze brazed at low temperature. 5. Device according to claim, charac terized in that the aforesaid organs are constituted by lugs of non-metallic material. 6. Device according to claim and sub-claim 5, characterized in that the cleats are made of fiber. 7. Device according to claim and sub-claim 5, characterized in that the cleats are made of impregnated asbestos fabric. 8.

Device according to claim and sub-claim 5, characterized in that the tabs are made of molded synthetic resin. 9. Device according to claim, charac terized in that the aforesaid members are partially engaged in small bowls provided on at least one of said blades. 10. Device according to claim and sub-claim 9, characterized in that the aforesaid small bowls are attached to one of said blades.