FR2745052A1 - Retraction washers of brake pads of disc brake of motor vehicles - Google Patents
Retraction washers of brake pads of disc brake of motor vehicles Download PDFInfo
- Publication number
- FR2745052A1 FR2745052A1 FR9601887A FR9601887A FR2745052A1 FR 2745052 A1 FR2745052 A1 FR 2745052A1 FR 9601887 A FR9601887 A FR 9601887A FR 9601887 A FR9601887 A FR 9601887A FR 2745052 A1 FR2745052 A1 FR 2745052A1
- Authority
- FR
- France
- Prior art keywords
- brake
- pads
- washers
- braking
- disc
- 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.)
- Withdrawn
Links
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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Description
La présente invention concerne un dispositif permettant de faire reculer les plaquettes après le freinage, afin de réduire la consommation des véhicules en dehors du freinage et réduire l'usure des plaquettes cn limitant le couple résiduel de Sottement disque friction. The present invention relates to a device making it possible to roll back the pads after braking, in order to reduce the consumption of vehicles outside braking and to reduce the wear of the pads cn limiting the residual torque of friction friction.
Le recul est parfois assuré aujourd'hui par des systèmes À ressorts ou hydrauliques compliques avec fonctionnement parfois erratique en vibrations allant jusqu'à la rupture des ressorts, souvent sous contrainte, que l'on soit en phase freinage partie hydraulique activée ou en phase roulage sans prcssion de commande, la phase roulage hors freinage coirespondant parfois pour certains types de freins À 50 % de usure des plaquettes. The recoil is sometimes assured today by complicated spring or hydraulic systems with sometimes erratic functioning in vibrations going until the rupture of the springs, often under stress, whether one is in braking phase with hydraulic part activated or in rolling phase without command indication, the rolling phase without braking sometimes responds for certain types of brakes to 50% pad wear.
Le dispositif selon l'invention permet de remédier à cet inconvénient. Il n'intervient qu'après la phase dc freinage du véhicule, jamais pendant le freinage lui-même, le déplacement après la phase de freinage (qui chauffe freins et plaquettes) étant réalisé par une dilatation différentielle entre deux ou plusieun métaux (ou métalloïde). n comporte en effet selon une première option en intégration dans les plaquettes de freinage 2 (ou plusieurs) rondelles poly ou bimétal se déformant sous contraintes thermiques dans le sens axial X, au refroidissement lesdites rondelles ou pièce sensible thermiquement revenant à icur état initial dans le plan de la plaquette (cf. fig.2). The device according to the invention overcomes this drawback. It only intervenes after the braking phase of the vehicle, never during braking itself, the displacement after the braking phase (which heats brakes and pads) being carried out by differential expansion between two or more metals (or metalloid ). n in fact comprises, according to a first option, integration into the brake pads 2 (or more) poly or bimetal washers deforming under thermal stresses in the axial direction X, on cooling said washers or thermally sensitive part returning to their initial state in the plan of the plate (see fig. 2).
La rondelle, dans le cas dune constitution bimétal, utilise le principe du bilame avec par exemple une face cuivre et l'autre face nickel (d'autres métaux peuvent être judicieusement choisis). The washer, in the case of a bimetal constitution, uses the principle of the bimetallic strip with for example a copper face and the other nickel face (other metals can be judiciously chosen).
Selon une deuxième option, la partic autodéformable thermique est intégrée dans le frein lui-memc, lame, rondelles ou toutes autres pièces variant dimensionnellement en température, selon la séquence suivante: 1er état # le frein est froid # la rondelle est plate, cf. Fig.2. According to a second option, the self-deformable thermal particle is integrated in the brake itself, blade, washers or any other parts varying in temperature, according to the following sequence: 1st state # the brake is cold # the washer is flat, cf. Fig. 2.
2ème état # le frein chauffe au freinage # la rondelle ne peut se déplacer librement,
prise cn sandwich entre piston et étrier.2nd state # the brake heats up when braking # the washer cannot move freely,
sandwich cn between piston and caliper.
3ème état # la pédale de frein est relâchée# l'étrier et le piston sont écartés du disque par
le système par un effort de plusieurs dizaines
de daN avec un déplacement de l'ordre de
0,1 mm (el) (la rondelle dans le cas présent
est devenue conique) cf. Fig.3. 3rd condition # the brake pedal is released # the caliper and the piston are moved away from the disc by
the system by an effort of several tens
of daN with a displacement of the order of
0.1 mm (el) (the washer in this case
has become conical) cf. Fig. 3.
4ème état # la rondelle se refroidit # Ellc redevient plate et rentre dans son logement
initial, libérant ainsi un espace (e2) cntrc piston et plaquette, plaquette et étrier.4th state # the washer cools # Ellc becomes flat again and returns to its housing
initial, thus freeing up space (e2) for piston and pad, pad and caliper.
5ème état # le disque en rotation # chasse les plaquettes et le frottement disque plaquettes devient prochc de zéro. 5th state # the rotating disc # drives out the pads and the pad disc friction becomes close to zero.
Les micro-frottements ou vibrations de type sinus chassent les plaquettes qui reculent du fait de leur faible inertie alors qutauparavant il fallait reculer étrier et piston par des microvibrations, ce qui était impossible et provoquait un facettage du disque par abrasion (léchage), provoquant usure prématurée des plaquettes, usure du disque et surconsommation du véhicule au roulage.Micro-friction or sinus-like vibrations drive out the pads which recede due to their low inertia whereas previously it was necessary to recoil the caliper and piston by microvibrations, which was impossible and caused the disc to be faceted by abrasion (licking), causing wear. premature brake pads, disc wear and overconsumption of the vehicle when driving.
Les dessins annexes illustrent l'invention :
La figure I représente un ensemble frein a disque dans lequel est intégré le système.The accompanying drawings illustrate the invention:
Figure I shows a disc brake assembly in which the system is integrated.
La figure II montre l'intégration des rondelles sensibles dans les plaquettes de freinage, état repos et la figure III les rondelles sensibles déformées par la température créant l'espace (el). Figure II shows the integration of the sensitive washers in the brake pads, rest state and Figure III the sensitive washers deformed by the temperature creating the space (el).
En référence à ces dessins, le dispositif comporte une pièce (1) autodéformable en fonction d'un gradient thermique, sertie ou bloquée soit dans des plaquettes soit dans un piston, soit dans un étrier de frein. With reference to these drawings, the device comprises a part (1) self-deformable as a function of a thermal gradient, crimped or blocked either in pads or in a piston, or in a brake caliper.
Selon une variante Figure IV à titre d'exemple, le système pourrait comprendre 2 rondelles (de # ext. 16 mm, # int. 6 mm. ép. 1 mm) sensibles, cuivre/nickel intégrées à la presse dans une plaquette qui à 1000C se déformerait de 0,1 min avec un effort développé de 27 daN. According to a variant Figure IV by way of example, the system could comprise 2 sensitive washers (of # ext. 16 mm, # int. 6 mm. Thickness 1 mm), copper / nickel integrated into the press in a plate which 1000C would deform by 0.1 min with a developed force of 27 daN.
Selon une autre variante, ces mêmes rondelles sensibles pourraient judicieusement être intégrées dans le frein lui-même. According to another variant, these same sensitive washers could judiciously be integrated into the brake itself.
Le dispositif selon l'invention est particulièrement destiné à équiper les plaquettes de freins à disque ou le frein lui-même pour n'user les plaquettes qu'en période de freinage, réduire l'usure du disque, réduire la consomation au roulage, augmenter la durée de vie des plaquettes, limiter la pollution par usure non contrôlée aléatoire pouvant provoquer à long terme du facettage sur le disque et des vibrations dans la direction du véhicule. The device according to the invention is particularly intended to equip the disc brake pads or the brake itself so as to wear the pads only during the braking period, reduce the wear of the disc, reduce the consumption on driving, increase the lifetime of the pads, limit pollution by uncontrolled random wear that can cause long-term faceting on the disc and vibrations in the direction of the vehicle.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9601887A FR2745052A1 (en) | 1996-02-15 | 1996-02-15 | Retraction washers of brake pads of disc brake of motor vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9601887A FR2745052A1 (en) | 1996-02-15 | 1996-02-15 | Retraction washers of brake pads of disc brake of motor vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2745052A1 true FR2745052A1 (en) | 1997-08-22 |
Family
ID=9489239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9601887A Withdrawn FR2745052A1 (en) | 1996-02-15 | 1996-02-15 | Retraction washers of brake pads of disc brake of motor vehicles |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2745052A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1767804A1 (en) * | 2005-09-27 | 2007-03-28 | C.R.F. Societa Consortile per Azioni | Disk-brake device with shape memory damping means |
FR3030858A1 (en) * | 2014-12-19 | 2016-06-24 | Foundation Brakes France Sas | THERMAL ACTUATOR COMPRISING A BILAME |
FR3030664A1 (en) * | 2014-12-19 | 2016-06-24 | Chassis Brakes Int Bv | THERMAL COMPENSATION BRAKE |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3586135A (en) * | 1968-05-06 | 1971-06-22 | Itt | Brake system with drum and interior and exterior shoes and automatic adjusting means for heating and wear |
JPS5980534A (en) * | 1982-10-29 | 1984-05-10 | Akebono Brake Ind Co Ltd | Disc brake |
US4524850A (en) * | 1982-08-09 | 1985-06-25 | Wabco Fahrzeugbremsen Gmbh | Wear compensating operating mechanism for disk brakes |
DE4006081A1 (en) * | 1989-06-17 | 1991-08-29 | Teves Gmbh Alfred | Slip-regulated hydraulic motor car brakes - have residual pressure reduced by control unit should pressure-medium temp. fall below critical value |
EP0592982A1 (en) * | 1992-10-13 | 1994-04-20 | Knorr-Bremse Ag | Temperature sensitive brake lining for disc brakes |
-
1996
- 1996-02-15 FR FR9601887A patent/FR2745052A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3586135A (en) * | 1968-05-06 | 1971-06-22 | Itt | Brake system with drum and interior and exterior shoes and automatic adjusting means for heating and wear |
US4524850A (en) * | 1982-08-09 | 1985-06-25 | Wabco Fahrzeugbremsen Gmbh | Wear compensating operating mechanism for disk brakes |
JPS5980534A (en) * | 1982-10-29 | 1984-05-10 | Akebono Brake Ind Co Ltd | Disc brake |
DE4006081A1 (en) * | 1989-06-17 | 1991-08-29 | Teves Gmbh Alfred | Slip-regulated hydraulic motor car brakes - have residual pressure reduced by control unit should pressure-medium temp. fall below critical value |
EP0592982A1 (en) * | 1992-10-13 | 1994-04-20 | Knorr-Bremse Ag | Temperature sensitive brake lining for disc brakes |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 008, no. 189 (M - 321) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1767804A1 (en) * | 2005-09-27 | 2007-03-28 | C.R.F. Societa Consortile per Azioni | Disk-brake device with shape memory damping means |
FR3030858A1 (en) * | 2014-12-19 | 2016-06-24 | Foundation Brakes France Sas | THERMAL ACTUATOR COMPRISING A BILAME |
FR3030664A1 (en) * | 2014-12-19 | 2016-06-24 | Chassis Brakes Int Bv | THERMAL COMPENSATION BRAKE |
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ST | Notification of lapse |