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WO1998011359A1 - Ensemble plaquette de frein - Google Patents

Ensemble plaquette de frein Download PDF

Info

Publication number
WO1998011359A1
WO1998011359A1 PCT/GB1997/002330 GB9702330W WO9811359A1 WO 1998011359 A1 WO1998011359 A1 WO 1998011359A1 GB 9702330 W GB9702330 W GB 9702330W WO 9811359 A1 WO9811359 A1 WO 9811359A1
Authority
WO
WIPO (PCT)
Prior art keywords
backing plate
spring
assembly
pad assembly
recesses
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.)
Ceased
Application number
PCT/GB1997/002330
Other languages
English (en)
Inventor
Otto Schmitt
Bernd Fuchs
Hans-Guenther Paul
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ferodo Bremsbelaege Technik Zentrum GmbH
Federal Mogul Technology Ltd
Original Assignee
Ferodo Bremsbelaege Technik Zentrum GmbH
T&N Technology Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ferodo Bremsbelaege Technik Zentrum GmbH, T&N Technology Ltd filed Critical Ferodo Bremsbelaege Technik Zentrum GmbH
Publication of WO1998011359A1 publication Critical patent/WO1998011359A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/002—Resiliently deformable pins
    • F16B19/004—Resiliently deformable pins made in one piece
    • 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
    • F16D65/095—Pivots or supporting members therefor
    • F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
    • F16D65/0973—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces
    • F16D65/0974—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces acting on or in the vicinity of the pad rim in a direction substantially transverse to the brake disc axis
    • F16D65/0975—Springs made from wire
    • F16D65/0976—Springs made from wire acting on one pad only

Definitions

  • This invention is concerned with a friction pad assembly suitable for use in a disc brake.
  • Such assemblies comprise a backing plate and a block of friction material secured to one surface of the backing plate.
  • friction pad assemblies are mounted on opposite sides of a disc to be urged into contact with the disc by a piston and cylinder assembly.
  • the backing plates of the pad assemblies are supported on guides which control their movement and absorb the braking forces. To enable the pad assemblies to make their movements, there has to be clearance between the backing plates and the guides. This means that there is the potential for the backing plates to rattle in their guides creating an undesirable noise.
  • each backing plate with a spring which, when deformed by contact with the guide urges the backing plate against the opposite side of the guide.
  • a spring is described in GB 1,533,976 in which the backing plate is provided with a projection in a central region thereof which is clear of the friction material and a rivet is secured to this projection.
  • the spring is made of wire and comprises a central portion formed into a coil. The coil passes around the rivet to secure the spring to the backing plate.
  • the spring also comprises two end portions which are spaced from the backing plate and engage one side of the guide to urge the backing plate against the other side of the guide.
  • GB 2,111,619 describes a similar spring in which a central coil is received in a large recess in the side of the backing plate, the recess reducing the area available for the friction material.
  • GB 2,027,141 describes a similar spring in which central coils of the spring are received in a passage which passes through a projection of the backing plate.
  • GB 2,111,618 describes a similar spring but without a central coil. This spring has its central portion passing through two spaced slots in a projection of the backing plate.
  • GB 2,036,211 describes a similar spring in which the central coil is wrapped around a projection of the backing plate.
  • GB 1,535,720 describes a leaf spring which is used in place of the springs mentioned above.
  • the leaf spring has a clip in a central region thereof which enters a recess in a projection of the backing plate.
  • EP 0,153,280 A describes springs which are wrapped around a projection of the backing plate and also describes the use of two springs, on opposite sides of a projection. In the latter case, the springs each have one end in a recess in the backing plate.
  • the known springs described above require there to be a projection of the backing plate or, in the case of GB 2,111,619, there to be a large recess in the edge of the backing plate.
  • the provision of such projections or large recesses is undesirable since it adds complication to the manufacture of the backing plate.
  • the assembly of the springs on to the backing plate is, in most cases, complex.
  • the invention provides a friction pad assembly suitable for use in a disc brake, the assembly comprising a backing plate, and a block of friction material secured to one surface of the backing plate, the assembly also comprising a spring mounted on the backing plate to prevent the assembly from rattling in its guide in service, characterised in that the spring comprises two end portions, which are received in recesses in an edge of the backing plate, and a central portion which is spaced from the edge of the backing plate.
  • the mounting of the spring on the backing plate does not require a projection of the backing plate and only requires recesses which are sufficiently large to receive the end portions of the spring.
  • the central portion of the spring has many possible shapes to provide one or two abutments to engage the edge of the guide.
  • the spring is formed from a length of wire or strip, eg of steel, which is bent into the required shape.
  • the wire may have a circular or a rectangular transverse cross-sectional shnpe.
  • the end portions of the spring In order to more securely retain the end portions of the spring in the recesses, it is advantageous if the end portions each have an undulation in them which grips the sides of the recess.
  • the spring may be arranged so that the end portions have to be pressed towards one another against the resilience of the spring to enable them to enter the recesses, ie the end portions press against these sides of the recesses due to the resilience of the spring.
  • the recesses in the backing plate may be provided by cylindrical bores in the edge of the backing plate. These bores may be parallel to one another or inclined towards or away from one another.
  • Figure 1 is a cross-sectional view taken through a backing plate of the illustrative friction pad assembly
  • Figure 2 is a view of the spring of the illustrative assembly taken in the direction of the arrow II in Figure
  • the illustrative friction pad assembly 10 is suitable for use in a disc brake.
  • the assembly 10 comprises a backing plate 12 which is shown in cross-section in Figure
  • the backing plate 12 is made of cast iron but, in variations of the illustrative assembly 10, may be made of other materials.
  • the assembly 10 also comprises a block of friction material (not shown) which is secured, in conventional manner, to one surface of the backing plate 12.
  • the pad assembly 10 also comprises a spring 20 mounted on the backing plate 12 to prevent the assembly 10 from rattling in its guide in service.
  • the spring 20 is formed from a single length of steel wire of circular cross- section and is 1.5mm in diameter.
  • the spring 20 has first and second opposite end portions 22 and 24, respectively, which are generally straight and parallel to one another except for undulations 22a and 24a, respectively, therein.
  • the end portions 22 and 24 of the spring 20 are received in recesses 16 in an edge of the backing plate 12 (in Figure 1, the spring 20 is shown with the end portions 22 and 24 about to be located in the recesses 16) .
  • the recesses 16 are in the form of cylindrical bores having a diameter of 3mm which extend parallel to one another from an edge of the backing plate 12.
  • the undulations 22a and 24a of the end portions 22 and 24 grip the sides of the recesses 16 to resist withdrawal of the end portions from the recesses.
  • the end portion 22 of the spring 20 is co-terminous with a portion 26 of the spring 20 which bends inwardly towards the other end portion 24, making an angle of approximately 135 degrees with the portion 22.
  • the portion 26 is also co-terminous with an arcuate portion 28 of the spring 20. This portion 28 bends outwardly away from the other end portion 24 making an angle of approximately 45 degrees with the portion 26.
  • the arcuate portion 28 subtends an angle of approximately 25 degrees about a point 30 which is spaced from the assembly 10.
  • the end portion 24 is co-terminous with a portion 32 of the spring 20, the portion 32 being a mirror image of the portion 26.
  • the portion 32 is also co-terminous with an arcuate portion 34 of the spring 20 which is a mirror image of the portion 28.
  • the arcuate portions 28 and 34 are both co-terminous with a central arcuate portion 36 of the spring 20 which subtends and angle of approximately 60 degrees about the point 30.
  • the junctions between the portions 28 and 36 and between the portions 34 and 36 are formed by 180 degree turns in the wire from which the spring 20 is formed. These turns provide abutments 40 of the spring 20.
  • the arcuate portions 28 and 34 are aligned with one another and lie alongside the arcuate portion 36 (see Figure 2) .
  • the spring 20 is mounted on the backing plate 12 without the need for a projection of the backing plate 12 or a large recess therein.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

Cet ensemble plaquette de frein (10), conçu pour être utilisé dans un frein à disque, comprend un flasque de frein (12), ainsi qu'un matériau de friction, fixé sur une surface de ce flasque (12). Cet ensemble (10) comprend également un ressort (20) monté sur le flasque (12), afin d'empêcher l'ensemble (10) de cliqueter dans son guide. Ce ressort (20) comprend deux portions d'extrémité (22, 24), lesquelles sont logées dans des évidements (16) ménagés dans un bord du flasque de frein (12), ainsi qu'une portion centrale (36) espacée du flasque (12).
PCT/GB1997/002330 1996-09-10 1997-09-01 Ensemble plaquette de frein Ceased WO1998011359A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9618885.9A GB9618885D0 (en) 1996-09-10 1996-09-10 Friction pad assembly
GB9618885.9 1996-09-10

Publications (1)

Publication Number Publication Date
WO1998011359A1 true WO1998011359A1 (fr) 1998-03-19

Family

ID=10799706

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1997/002330 Ceased WO1998011359A1 (fr) 1996-09-10 1997-09-01 Ensemble plaquette de frein

Country Status (2)

Country Link
GB (1) GB9618885D0 (fr)
WO (1) WO1998011359A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008090172A1 (fr) * 2007-01-26 2008-07-31 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Support de garniture de frein et garniture pour frein à disque
WO2008090149A1 (fr) * 2007-01-26 2008-07-31 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Support de garniture de frein et garniture de frein pour frein à disque
WO2008090128A1 (fr) * 2007-01-26 2008-07-31 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Fixation de plaquette de frein et plaquette de frein pour un frein à disque
WO2008090131A1 (fr) * 2007-01-26 2008-07-31 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Fixation de plaquette de frein et plaquette de frein pour un frein à
WO2008090171A1 (fr) * 2007-01-26 2008-07-31 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Support de garniture de frein et garniture pour frein à disque

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE915732C (de) * 1941-01-28 1954-07-29 Kurt Prange Dr Duebelverbindung fuer Bauteile aus sproeden Stoffen
GB1533976A (en) 1974-12-24 1978-11-29 Girling Ltd Friction pad assemblies for sliding caliper disc brakes
GB1535720A (en) 1974-12-24 1978-12-13 Girling Ltd Friction pad assemblies for sliding caliper disc brakes
GB2027141A (en) 1978-07-28 1980-02-13 Lucas Industries Ltd Friction pad assemblies for disc brakes
GB2036211A (en) 1978-09-14 1980-06-25 Lucas Industries Ltd Disc brake pad assemblies
GB2111618A (en) 1978-09-14 1983-07-06 Lucas Industries Ltd Disc brake pad assemblies
GB2111619A (en) 1978-09-14 1983-07-06 Lucas Industries Ltd Disc brake pad assemblies
FR2555271A3 (fr) * 1983-11-22 1985-05-24 Donetti B & A Metal Fren Snc Plaquette de friction pour freins a disque de vehicules automobiles
EP0153280A2 (fr) 1984-01-19 1985-08-28 METAL-FREN SOCIETA' ITALIANA LAVORAZIONE MATERIALE D'ATTRITO di Ing. Bruno e Antonio DONETTI S.n.c. Disposition de patin de friction à appliquer dans un frein à disque pour véhicules
EP0172617A1 (fr) * 1984-08-23 1986-02-26 Louis N. Giannuzzi Cheville d'ancrage préfaçonné en une pièce
US5489178A (en) * 1993-12-08 1996-02-06 Harker; Brian G. Method and apparatus for improved masonry drive anchor

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE915732C (de) * 1941-01-28 1954-07-29 Kurt Prange Dr Duebelverbindung fuer Bauteile aus sproeden Stoffen
GB1533976A (en) 1974-12-24 1978-11-29 Girling Ltd Friction pad assemblies for sliding caliper disc brakes
GB1535720A (en) 1974-12-24 1978-12-13 Girling Ltd Friction pad assemblies for sliding caliper disc brakes
GB2027141A (en) 1978-07-28 1980-02-13 Lucas Industries Ltd Friction pad assemblies for disc brakes
GB2036211A (en) 1978-09-14 1980-06-25 Lucas Industries Ltd Disc brake pad assemblies
GB2111618A (en) 1978-09-14 1983-07-06 Lucas Industries Ltd Disc brake pad assemblies
GB2111619A (en) 1978-09-14 1983-07-06 Lucas Industries Ltd Disc brake pad assemblies
FR2555271A3 (fr) * 1983-11-22 1985-05-24 Donetti B & A Metal Fren Snc Plaquette de friction pour freins a disque de vehicules automobiles
EP0153280A2 (fr) 1984-01-19 1985-08-28 METAL-FREN SOCIETA' ITALIANA LAVORAZIONE MATERIALE D'ATTRITO di Ing. Bruno e Antonio DONETTI S.n.c. Disposition de patin de friction à appliquer dans un frein à disque pour véhicules
EP0172617A1 (fr) * 1984-08-23 1986-02-26 Louis N. Giannuzzi Cheville d'ancrage préfaçonné en une pièce
US5489178A (en) * 1993-12-08 1996-02-06 Harker; Brian G. Method and apparatus for improved masonry drive anchor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008090172A1 (fr) * 2007-01-26 2008-07-31 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Support de garniture de frein et garniture pour frein à disque
WO2008090149A1 (fr) * 2007-01-26 2008-07-31 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Support de garniture de frein et garniture de frein pour frein à disque
WO2008090128A1 (fr) * 2007-01-26 2008-07-31 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Fixation de plaquette de frein et plaquette de frein pour un frein à disque
WO2008090131A1 (fr) * 2007-01-26 2008-07-31 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Fixation de plaquette de frein et plaquette de frein pour un frein à
WO2008090171A1 (fr) * 2007-01-26 2008-07-31 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Support de garniture de frein et garniture pour frein à disque
CN101595322B (zh) * 2007-01-26 2012-01-18 克诺尔商用车制动系统有限公司 用于盘式制动器的制动衬片保持装置和制动衬片
RU2468267C2 (ru) * 2007-01-26 2012-11-27 Кнорр-Бремзе Зюстеме Фюр Нутцфарцойге Гмбх Держатель тормозной накладки и тормозная накладка для дискового тормоза

Also Published As

Publication number Publication date
GB9618885D0 (en) 1996-10-23

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