FR2778371A1 - Vehicle angular suspension spring and shock absorber with independent adjustment usable for light aircraft or land vehicles - Google Patents
Vehicle angular suspension spring and shock absorber with independent adjustment usable for light aircraft or land vehicles Download PDFInfo
- Publication number
- FR2778371A1 FR2778371A1 FR9805650A FR9805650A FR2778371A1 FR 2778371 A1 FR2778371 A1 FR 2778371A1 FR 9805650 A FR9805650 A FR 9805650A FR 9805650 A FR9805650 A FR 9805650A FR 2778371 A1 FR2778371 A1 FR 2778371A1
- Authority
- FR
- France
- Prior art keywords
- shock absorber
- spring
- tubes
- support
- damping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/42—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing
- F16F1/52—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing loaded in combined stresses
- F16F1/54—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing loaded in combined stresses loaded in compression and shear
- F16F1/545—Neidhart-type rubber springs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
La présente invention concerne un dispositif ressorts-The present invention relates to a spring device
amortisseurs compact, léger, robuste et économique, destiné principalement aux suspensions de véhicules, permettant un réglage simple et indépendant de la garde au sol (ou de la position au repos du dispositif et du coefficient d'amortissement. Le dispositif reprend deux principes connus pour réaliser les fonctions de ressort et d'amortissement mais les regroupe d'une manière inédite. La fonction de ressort est réalisée par la déformation de brins de latex ou de caoutchouc synthétique placés entre deux tubes de section polygonale. Considérons le cas de tubes carrés. Ils sont choisis de telle sorte que la diagonale de la section externe du tube intérieur soit à peine inférieure au côté de la section interne du tube extérieur. Au repos le tube intérieur présente sa section orientée à 45 degrés par rapport au tube extérieur, quatre brins cylindriques de latex occupant les quatre sections triangulaires laissées libres entre les deux tubes. La mise en pression initiale du latex est obtenue par le choix d'un diamètre de brin supérieur au cercle inscrit dans les dites sections triangulaires, ce qui impose d'étirer les brins pour en réduire la section préalablement à l'introduction du tube intérieur dans le tube extérieur. Après relâchement, les brins de latex offrent une grande surface de contact avec les parois des deux tubes. Toute rotation relative de l'un par rapport à l'autre provoque donc un écrasement des brins de latex, d'o l'effet de ressort recherché. L'amplitude maximale du mouvement autour de la position de repos est évidemment inférieure à 45 degrés, valeur pour laquelle l'écrasement des brins est maximal et à laquelle correspond donc une position d'équilibre instable. Le choix de la raideur du matériau des brins et de leur diamètre relativement aux dimensions des sections des tubes constituent avec la longueur des deux tubes, les compact, light, robust and economical shock absorbers, intended mainly for vehicle suspensions, allowing simple and independent adjustment of the ground clearance (or of the device's rest position and of the damping coefficient. The device incorporates two principles known for perform the spring and damping functions but regroups them in a new way. The spring function is achieved by the deformation of strands of latex or synthetic rubber placed between two tubes of polygonal section. Let us consider the case of square tubes. They are chosen so that the diagonal of the outer section of the inner tube is barely less than the side of the inner section of the outer tube. At rest the inner tube has its section oriented at 45 degrees to the outer tube, four strands cylindrical of latex occupying the four triangular sections left free between the two tubes. nitial latex is obtained by the choice of a strand diameter greater than the circle inscribed in said triangular sections, which requires stretching the strands to reduce the section prior to the introduction of the inner tube into the outer tube. After loosening, the latex strands provide a large contact surface with the walls of the two tubes. Any relative rotation of one with respect to the other therefore causes crushing of the strands of latex, hence the desired spring effect. The maximum amplitude of the movement around the rest position is obviously less than 45 degrees, value for which the crushing of the strands is maximum and to which therefore corresponds an unstable equilibrium position. The choice of the stiffness of the material of the strands and their diameter relative to the dimensions of the sections of the tubes constitute, with the length of the two tubes, the
trois paramètres de dimensionnement du ressort. three spring dimensioning parameters.
La fonction d'amortissement est remplie par deux bagues en matériau approprié disposées à chaque extrémité du système de ressort décrit cidessus. Ces bagues exercent un couple de freinage pour la rotation relative entre les tubes externe et interne du dispositifvia deux pièces d'appui coaxiales aux dits axes et respectivement solidaires de l'un et de l'autre, appliquées de chaque côté de chaque bague, Les pièces d'appui solidaires du tube extérieur sont avantageusement réalisées sous forme de rondelles épaisses qui viennent s'encastrer à -2 - chaque extrémité du tube grace à quatre traits de scie de largeur égale à l'épaisseur des paroies du tube et profonds de quelques millimètres. Les pièces d'appui solidaires du tube intérieur se présentent sous forme de rondelles épaisses prolongées par un tube carré plein venant s'encastrer à l'intérieur du tube intérieur. Pour simplifier son exposé sans rien lui retirer de sa généralité, The damping function is fulfilled by two rings of suitable material placed at each end of the spring system described above. These rings exert a braking torque for the relative rotation between the external and internal tubes of the device via two support pieces coaxial with the said axes and respectively integral with one and the other, applied on each side of each ring, the supporting parts integral with the outer tube are advantageously produced in the form of thick washers which come to be embedded at -2 - each end of the tube thanks to four saw cuts of width equal to the thickness of the walls of the tube and deep by a few millimeters. The supporting parts integral with the inner tube are in the form of thick washers extended by a solid square tube which is fitted inside the inner tube. To simplify his presentation without removing anything from his generality,
la description ci-après des fonctions de réglage est relative à un montage the description below of the adjustment functions relates to an assembly
de type suspension de véhicule o les tubes carrés extérieurs sont fixés au chassis et les tubes carrés intérieurs reliés aux bras de la vehicle suspension type where the outer square tubes are fixed to the chassis and the inner square tubes connected to the arms of the
suspension.suspension.
Le réglage de la garde au sol est obtenu au moyen de deux paires de rondelles à secteurs dentés radiaux, une à chaque extrémité. Chaque paire se décompose ainsi: une rondelle soudée dans le prolongement du bras de suspension et l'autre constituée par la face opposée de la pièce d'appui de la bague d'amortissement, pièce d'appui solidaire du tube carré intérieur. Toutes les pièces d'assemblage et de liaison - tubes carrés pleins, et rondelles à secteurs - sont percées axialement pour The adjustment of the ground clearance is obtained by means of two pairs of washers with radial toothed sectors, one at each end. Each pair breaks down as follows: one washer welded in line with the suspension arm and the other consisting of the opposite face of the support part of the damping ring, support part integral with the inner square tube. All assembly and connection parts - solid square tubes, and sector washers - are drilled axially to
permettre le passage d'une tige d'assemblage filetée en ses extrémités. allow the passage of a threaded assembly rod at its ends.
Cette tige d'assemblage traverse donc axialement tout l'ensemble. Deux rondelles ressorts sont disposées entre les écrous de serrage et les faces externes des deux rondelles à secteurs dentées solidaires des bras de suspension. Elles servent à ajuster la pression sur les bagues d'amortissement et au rattrappage d'usure de ces dernières, réalisant ainsi la fonction de réglage et de maintien du coefficient This assembly rod therefore crosses the entire assembly axially. Two spring washers are arranged between the clamping nuts and the external faces of the two toothed sector washers integral with the suspension arms. They are used to adjust the pressure on the damping rings and to compensate for their wear, thus performing the function of adjusting and maintaining the coefficient
d'amortissement.depreciation.
L'étanchéité de la suspension ainsi constituée est facile à garantir. 1l suffit de déposer un filet de mastic silicone dans les traits de scie des rondelles d'appui avant leur mise en place et de glisser un joint torique à chaque extrémité de la tige d'assemblage, entre celle-ci et les The tightness of the suspension thus formed is easy to guarantee. 1l just place a thread of silicone sealant in the saw lines of the support washers before their installation and slide an O-ring at each end of the assembly rod, between it and the
bagues à secteurs.sector rings.
Une variante plus perfectionnée concerne l'adjonction d'une A more sophisticated variant concerns the addition of a
cloche à l'une des pièces d'appui de chaque bague d'amortissement. bell to one of the supporting parts of each damping ring.
Cette cloche vient entourer la bague d'amortissement et l'autre pièce d'appui. Un joint torique complète alors la protection de la bague This bell surrounds the damping ring and the other support piece. An O-ring then completes the protection of the ring
d'amortissement.depreciation.
Le dispositif selon l'invention est destiné à toute application requérant des fonctions de ressort et d'amortissement en rotation mouvement dans un espace réduit et se satisfaisant d'une amplitude - 3 - de mouvement inférieure à 45 degrés. Il est particulièrement bien adapté aux véhicules légers de type char à voile ou char à cerf-volant car il offre une plage de réglages étendue permettant d'optimiser le comportement du véhicule en fonction des masses suspendues et non- suspendues, du choix des pneumatiques et de leur pression de gonflage et de la nature du terrain. L'utilisation de deux composants aux réponses très non-linéaires est un facteur de stabilisation important pour le comportement dynamique de l'ensemble constitué par le véhicule et son train de roulement. Les qualités du dispositif selon l'invention le destinent également aux remorques, aux The device according to the invention is intended for any application requiring functions of spring and damping in movement rotation in a reduced space and satisfying an amplitude of movement less than 45 degrees. It is particularly well suited to light vehicles of the sand yachting or kite chariot type because it offers a wide range of adjustments allowing the vehicle's behavior to be optimized according to the suspended and unsprung masses, the choice of tires and their inflation pressure and the nature of the terrain. The use of two components with very non-linear responses is an important stabilizing factor for the dynamic behavior of the assembly formed by the vehicle and its undercarriage. The qualities of the device according to the invention also make it suitable for trailers,
aéroplanes légers et aux engins motorisés terrestres les plus divers. light airplanes and a wide variety of land motorized vehicles.
Le dispositif selon l'invention est représenté sur la figure 1. The device according to the invention is shown in FIG. 1.
Seul l'ensemble d'amortissement et d'assemblage de droite a été dessiné, ses pièces constitutives 4, 5, 6, 7 et 8 étant alignées selon l'axe de leur montage. Un ensemble identique sera monté symétriquement sur la partie gauche. L'intérieur du tube carré externe 1, tube fixé au chassis du véhicule, est occupé par le tube carré interne 2 et les quatre brins de caoutchouc 3. La bague d'amortissement 5 vient se loger entre la pièce d'appui 4 - dont on distingue les quatre traits de scie permettant son encastrement à l'extrémité du tube 1 - et la pièce d'appui 6 avec son tube carré plein percé pour le passage de la tige de serrage 9. Le bras de suspension 8 est solidaire de la rondelle à secteurs dentés 7 dont on distingue la partie correspondante sur la face non visible de la pièce 6. La pièce 7 est également percée en son centre pour laisser passer la tige 9. Cette dernière, dont les filetages des extrémités sont simplement suggérés par leurs limites, est donc appelée à être introduite selon l'axe de rotation de la suspension. La rondelle ressort 10 est serrée par l'écrou 11 contre la face non visible de la pièce 7. Un contre écrou non Only the damping and assembly assembly on the right has been drawn, its constituent parts 4, 5, 6, 7 and 8 being aligned along the axis of their mounting. An identical set will be mounted symmetrically on the left side. The inside of the external square tube 1, a tube fixed to the chassis of the vehicle, is occupied by the internal square tube 2 and the four rubber strands 3. The damping ring 5 is housed between the support piece 4 - including a distinction is made between the four saw cuts allowing it to be embedded at the end of the tube 1 - and the support piece 6 with its solid square tube pierced for the passage of the clamping rod 9. The suspension arm 8 is integral with the toothed sector washer 7, the corresponding part of which can be seen on the non-visible face of the part 6. The part 7 is also pierced at its center to allow the rod 9 to pass through. The latter, the threads of the ends of which are simply suggested by their limits, is therefore called upon to be introduced along the axis of rotation of the suspension. The spring washer 10 is tightened by the nut 11 against the non-visible face of the part 7. A non-lock nut
représenté vient bloquer l'écrou 11. shown comes to lock nut 11.
-4--4-
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9805650A FR2778371A1 (en) | 1998-05-05 | 1998-05-05 | Vehicle angular suspension spring and shock absorber with independent adjustment usable for light aircraft or land vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9805650A FR2778371A1 (en) | 1998-05-05 | 1998-05-05 | Vehicle angular suspension spring and shock absorber with independent adjustment usable for light aircraft or land vehicles |
Publications (1)
Publication Number | Publication Date |
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FR2778371A1 true FR2778371A1 (en) | 1999-11-12 |
Family
ID=9526027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9805650A Pending FR2778371A1 (en) | 1998-05-05 | 1998-05-05 | Vehicle angular suspension spring and shock absorber with independent adjustment usable for light aircraft or land vehicles |
Country Status (1)
Country | Link |
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FR (1) | FR2778371A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7384920B2 (en) | 2001-07-26 | 2008-06-10 | Institute Of Radiation Medicine, Academy Of Military Medical Sciences, Pla | Use of stilbene compounds in the manufacture of medicament for the prevention and treatment of diabetes or retrovirus-associated diseases |
EP2296920A1 (en) * | 2008-05-23 | 2011-03-23 | Système Nenuphar Inc. | Angular adjusting system for torsion suspension and torsion suspension so obtained |
CN102139613A (en) * | 2011-02-15 | 2011-08-03 | 北京科技大学 | Oil gas suspension pressure balance device for mine automobile |
DE112006000914B4 (en) * | 2005-04-12 | 2019-01-10 | Kongsberg Automotive A/S | Stabilizer and method for removing and installing the elastic support of the stabilizer |
CN114962517A (en) * | 2021-02-22 | 2022-08-30 | 纳恩博(常州)科技有限公司 | Damper and vehicle |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1187273A (en) * | 1957-10-29 | 1959-09-09 | Ernst Hahn Fahrzeugbau | Vehicle axle with end swing arms and spring loaded suspension |
CA954538A (en) * | 1972-05-04 | 1974-09-10 | Gerald N. Farr | Resilient joint |
DE8619274U1 (en) * | 1986-07-18 | 1986-09-18 | Alois Kober KG, 8871 Kötz | Torsion spring axle for vehicle trailers |
-
1998
- 1998-05-05 FR FR9805650A patent/FR2778371A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1187273A (en) * | 1957-10-29 | 1959-09-09 | Ernst Hahn Fahrzeugbau | Vehicle axle with end swing arms and spring loaded suspension |
CA954538A (en) * | 1972-05-04 | 1974-09-10 | Gerald N. Farr | Resilient joint |
DE8619274U1 (en) * | 1986-07-18 | 1986-09-18 | Alois Kober KG, 8871 Kötz | Torsion spring axle for vehicle trailers |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7384920B2 (en) | 2001-07-26 | 2008-06-10 | Institute Of Radiation Medicine, Academy Of Military Medical Sciences, Pla | Use of stilbene compounds in the manufacture of medicament for the prevention and treatment of diabetes or retrovirus-associated diseases |
DE112006000914B4 (en) * | 2005-04-12 | 2019-01-10 | Kongsberg Automotive A/S | Stabilizer and method for removing and installing the elastic support of the stabilizer |
EP2296920A1 (en) * | 2008-05-23 | 2011-03-23 | Système Nenuphar Inc. | Angular adjusting system for torsion suspension and torsion suspension so obtained |
EP2296920A4 (en) * | 2008-05-23 | 2012-04-04 | Systeme Nenuphar Inc | Angular adjusting system for torsion suspension and torsion suspension so obtained |
CN102139613A (en) * | 2011-02-15 | 2011-08-03 | 北京科技大学 | Oil gas suspension pressure balance device for mine automobile |
CN102139613B (en) * | 2011-02-15 | 2012-09-26 | 北京科技大学 | Oil gas suspension pressure balance device for mine automobile |
CN114962517A (en) * | 2021-02-22 | 2022-08-30 | 纳恩博(常州)科技有限公司 | Damper and vehicle |
EP4049867A1 (en) * | 2021-02-22 | 2022-08-31 | Ninebot (Changzhou) Tech Co., Ltd. | Damping mechanism and vehicle |
US11840307B2 (en) | 2021-02-22 | 2023-12-12 | Ninebot (Changzhou) Tech Co., Ltd. | Damping mechanism and vehicle |
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