WO2002031375A1 - Multiple disc brakes - Google Patents

Multiple disc brakes Download PDF

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Publication number
WO2002031375A1
WO2002031375A1 PCT/ZA2001/000156 ZA0100156W WO0231375A1 WO 2002031375 A1 WO2002031375 A1 WO 2002031375A1 ZA 0100156 W ZA0100156 W ZA 0100156W WO 0231375 A1 WO0231375 A1 WO 0231375A1
Authority
WO
WIPO (PCT)
Prior art keywords
discs
disc
brake
rotors
splines
Prior art date
Application number
PCT/ZA2001/000156
Other languages
French (fr)
Inventor
Dante D"ANDREA
Giulio D"ANDREA
Original Assignee
Andrea Dante D
Andrea Giulio D
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 Andrea Dante D, Andrea Giulio D filed Critical Andrea Dante D
Priority to AU2002213523A priority Critical patent/AU2002213523A1/en
Publication of WO2002031375A1 publication Critical patent/WO2002031375A1/en

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
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/025—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members with two or more rotating discs at least one of them being located axially
    • 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
    • F16D65/12—Discs; Drums for 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
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/1304—Structure
    • F16D2065/1316—Structure radially segmented
    • 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
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/134—Connection
    • F16D2065/1356—Connection interlocking
    • F16D2065/1364—Connection interlocking with relative movement axially
    • 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
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/134—Connection
    • F16D2065/1392—Connection elements
    • 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
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/134—Connection
    • F16D2065/1392—Connection elements
    • F16D2065/1396—Ancillary resilient elements, e.g. anti-rattle or retraction springs

Definitions

  • This invention relates to multiple disc brakes for all types of automotive vehicles.
  • the multiple discs braking system is applicable to all transportation fields, small, medium and large passenger vehicles. It is particularly applicable to vehicles that are subjected to continual heavy braking namely taxis, ambulances, police vehicles and medium to heavy-duty transport trucks.
  • the conventional disc/drum braking systems in use today make use of a single disc/rotor per wheel/axle generally on the front wheels of the vehicles and drum brakes on the rear wheels. Prolonged heavy braking causes severe heat build up in the discs/rotors and brake pads which leads to brake fade resulting in increased braking distances and reduced stopping/braking power. It is an object of this invention to provide a device to minimize or even eliminate this disadvantage.
  • the multiple discs braking system works on the principle, of using two or more discs/rotors sandwiched between the brake pads/friction material and the hydraulic caliper. Thus by applying and maintaining a constant hydraulic pressure the stopping / braking power obtained is multiplied by the number of discs/rotors that are subjected to this pressure.
  • Example No.l
  • One flat piece of metal is placed in a hydraulic press and clamped by a 50Kg/cm 2 force piston, is subjected to the same pressure of the piston.
  • each individual piece of metal is subjected to the same pressure of the piston. With the difference being, the number of pieces of metal placed in the press multiplies that the actual work produced without altering the initial pressure of the piston 50Kg/cm 2 .
  • Vehicle Speed 100 Km/h.
  • Vehicle Speed 100 Km/h.
  • Braking Distance 30 m. Braking Distance. 10 m.
  • the multiple disc brakes are made of a very simple construction. They are constructed of two or more discs/rotors and additional brake pads/friction material allocated between the discs/rotors as stated below.
  • This disc is assembled to the wheel / axle, it has splines on the outside part of the hub. (Fig l;No. 2)
  • This disc or discs are assembled on the drive disc and slide over the drive disc's hub; they have splines on the inside of the hub and thus are coupled to the drive disc. (Fig 2; No.3)
  • the supplementary disc or discs can be coupled to the drive disc by either the use of splines (Fig.l; Fig.2); Keyways, two at 180 degrees, three at 120 degrees, four at 90 degrees (Fig.4) and Pins (Fig.5 Pins locked on the drive disc and free on the supplementary disc; Fig.6 Pins locked on the supplementary disc and free on the drive disc.)
  • the single brake pads are used on the outside of both discs, whereas the double brake pad is allocated in between the drive disc and the supplementary disc. (Fig. 3)
  • the flat springs can be positioned at 45; 60; 90 and 120 degrees depending on the number of splines.
  • the flat springs are inserted to avoid swing and to eliminate free movement supplementary disc or discs.
  • the springs are also inserted to compensate for tolerance existing between the two splines, which may increase due to wear and also to decrease vibrations and noise caused by wearing down of the splines. (Fig.3; No.14)
  • Friction Material / Brake Pad LIST OF COMPONENTS CONTINUED.

Landscapes

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

Abstract

The Multiple disc braking system works on the principle of two or more discs/rotors, namely a supplementary disc / discs which slide over the hub of the drive disc and are coupled through the use of splines, key ways or pins on the hub of the drive disc. The two or more discs are sandwiched between the brake pads / friction material and hydraulic calipers by using two single sided brake pads on either side of the discs and a double sided brake pad inserted between the discs, these brake pads are mounted / anchored onto the brake caliper. A hydraulic pressure is applied as per normal braking however due to the increased effective contact area (double the effective coefficient of friction) between the friction material and discs/rotors exceptional stopping power is achieved. The increased surface area of the multiple discs/rotors contributes to lower brake temperatures, improved heat absorption and dissipation, which greatly reduces brake fade during repeated heavy braking applications and increases the life expectancy of the brake pads/friction material.

Description

MULTIPLE DISC BRAKES
1. TECHNICAL FIELD.
This invention relates to multiple disc brakes for all types of automotive vehicles. The multiple discs braking system is applicable to all transportation fields, small, medium and large passenger vehicles. It is particularly applicable to vehicles that are subjected to continual heavy braking namely taxis, ambulances, police vehicles and medium to heavy- duty transport trucks.
2. BACKGROUND ART OF THE INVENTION.
The conventional disc/drum braking systems in use today make use of a single disc/rotor per wheel/axle generally on the front wheels of the vehicles and drum brakes on the rear wheels. Prolonged heavy braking causes severe heat build up in the discs/rotors and brake pads which leads to brake fade resulting in increased braking distances and reduced stopping/braking power. It is an object of this invention to provide a device to minimize or even eliminate this disadvantage.
3. DISCLOSURE OF THE INVENTION.
The multiple discs braking system works on the principle, of using two or more discs/rotors sandwiched between the brake pads/friction material and the hydraulic caliper. Thus by applying and maintaining a constant hydraulic pressure the stopping / braking power obtained is multiplied by the number of discs/rotors that are subjected to this pressure. Example No.l
One flat piece of metal is placed in a hydraulic press and clamped by a 50Kg/cm2 force piston, is subjected to the same pressure of the piston.
Example No.2
If three flat pieces of metal are placed one on top of the other in the same press and are clamped with the same 50Kg/cm2 force piston, each individual piece of metal is subjected to the same pressure of the piston. With the difference being, the number of pieces of metal placed in the press multiplies that the actual work produced without altering the initial pressure of the piston 50Kg/cm2.
Applying the same principle to the disc brakes of a vehicle by adding one or two more discs/rotors per axle, it is possible to double or triplicate the braking efficiency without altering the initial hydraulic pressure on the master brake piston.
Brakes with multiple discs effectively multiply the work done, divide the braking time and distance by the number of discs employed.
The differences of brakes with only one disc and three discs can be illustrated by the following examples. (Note calculations and measurements used are only for example purposes.)
Example No.3a Example No.3b
Number of Discs. 1. Number of Discs. 3.
Pressure on Piston. 10 Kg/cm2. Pressure on Piston. 10 Kg/cm2
Vehicle Speed. 100 Km/h. Vehicle Speed. 100 Km/h.
Braking Distance. 30 m. Braking Distance. 10 m.
Braking Time. 10 Sec. Braking Time. 3.2 Sec. 4. DESCRIPTION OF MULTIPLE DISCS BRAKES.
The multiple disc brakes are made of a very simple construction. They are constructed of two or more discs/rotors and additional brake pads/friction material allocated between the discs/rotors as stated below.
A. Drive Disc.
This disc is assembled to the wheel / axle, it has splines on the outside part of the hub. (Fig l;No. 2)
B. Supplementary Discs.
This disc or discs are assembled on the drive disc and slide over the drive disc's hub; they have splines on the inside of the hub and thus are coupled to the drive disc. (Fig 2; No.3)
The supplementary disc or discs can be coupled to the drive disc by either the use of splines (Fig.l; Fig.2); Keyways, two at 180 degrees, three at 120 degrees, four at 90 degrees (Fig.4) and Pins (Fig.5 Pins locked on the drive disc and free on the supplementary disc; Fig.6 Pins locked on the supplementary disc and free on the drive disc.)
C. Double and Single Brake Pads/Friction Material.
The single brake pads are used on the outside of both discs, whereas the double brake pad is allocated in between the drive disc and the supplementary disc. (Fig. 3)
D. Flat Springs.
A minimum of three springs, are inserted between the male splines of the drive disc and the female splines if the supplementary disc or discs. (Fig.3; No.14) Flat Springs Continued.
The flat springs can be positioned at 45; 60; 90 and 120 degrees depending on the number of splines. The flat springs are inserted to avoid swing and to eliminate free movement supplementary disc or discs. The springs are also inserted to compensate for tolerance existing between the two splines, which may increase due to wear and also to decrease vibrations and noise caused by wearing down of the splines. (Fig.3; No.14)
LIST OF COMPONENTS.
Figure. 1 No. (1) Drive Disc.
No. (2) Outside Splines.
No. (3) Hole of Wheel Bolts.
Figure. 2 No. (2) Supplementary Disc.
No. (3) Inside Splines.
Figure. 3 No. (1) Drive Disc.
No. (2) Supplementary Disc.
No. (6) Caliper.
No. (7) Oil Supply.
No. (8) Oil Hole.
No. (9) Bleed Nipple.
No. (10) Cylinders.
No. (11) Pistons.
No. (12) Friction Material Backing / Bonding Plate
No. (13) Friction Material / Brake Pad.
No. (14) Flat Springs.
No. (15) Caliper Mounting Point.
No. (16) Friction Material Backing / Bonding Plate
No. (17) Friction Material / Brake Pad. LIST OF COMPONENTS CONTINUED.
Coupling Components Figures 4; 5 and 6.
Figure. 4 No. (1) Drive Disc.
No. (2) Supplementary Disc.
No. (3) Key.
No. (4) Key Way and Flat Spring Housings.
Figure. 5 No. (1) Drive Disc.
No. (2) Supplementary Disc.
No. (5) Pins Locked to Drive Disc.
No. (6) Pin Housings.
No. (7) Flat Springs Housings.
Figure. 6 No. (1) Drive Disc.
No. (2) Supplementary Disc.
No. (8) Pins Housing.
No. (9) Pins Locked to the Supplementary Disc
No. (10) Flat Springs Housings.

Claims
LAIMS.
1. . A multiple disc braking system having two or more discs / rotors sandwiched between two single sided bralςe^pads, one double sided brake pad and a hydraulic caliper. (Fig. 3)
2. The interlock of the discs characterized by use of splines, key ways and pins that makes it possible to couple the drive disc to the supplementary disc / discs thus creating the multiple disc brake.
3. The central double brake pad characterized by the bonding of the friction material on both sides of the steel backing / bonding plate. This transmits the braking action to both the drive disc and the supplementary disc / discs.
4. The flat springs characterized by the specific form which allows it to hold itself in position on the supplementary disc / discs. The springs are inserted to compensate for the existing tolerance between the two splines, which may increase due to wear and to decrease vibrations and noise caused by the wearing down of the splines.
PCT/ZA2001/000156 2000-10-11 2001-10-11 Multiple disc brakes WO2002031375A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002213523A AU2002213523A1 (en) 2000-10-11 2001-10-11 Multiple disc brakes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA20005569 2000-10-11
ZA200005569 2000-10-11

Publications (1)

Publication Number Publication Date
WO2002031375A1 true WO2002031375A1 (en) 2002-04-18

Family

ID=25588939

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2001/000156 WO2002031375A1 (en) 2000-10-11 2001-10-11 Multiple disc brakes

Country Status (2)

Country Link
AU (1) AU2002213523A1 (en)
WO (1) WO2002031375A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1234992A2 (en) * 2001-02-26 2002-08-28 Meritor Heavy Vehicle Systems, LLC A brake rotor assembly and caliper assembly
WO2004025133A1 (en) * 2002-09-10 2004-03-25 Haldex Brake Products Ab Support for sliding brake discs
GR1009752B (en) * 2019-05-13 2020-05-29 Αλεξανδρος Κωνσταντινου Αγγελιδακης Car's brakes with multiplate disc brakes

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2165817A1 (en) * 1970-12-30 1972-08-03 Isuzu Motors Ltd Partial disc brake
US3707207A (en) * 1969-09-06 1972-12-26 Aisin Seiki Spot disc brakes for vehicles
JPS5712135A (en) * 1980-06-25 1982-01-22 Nissin Kogyo Kk Multiple-disk brake for vehicle
US4576255A (en) * 1983-06-30 1986-03-18 Societe Anonyme D.B.A. Multi-disc brakes
JPS61112833A (en) * 1984-11-05 1986-05-30 Nippon Air Brake Co Ltd Disc brake
US4798268A (en) * 1986-10-29 1989-01-17 Bendix France Multiple disc brake
US5437351A (en) * 1993-12-23 1995-08-01 Rexnord Corporation Friction disk brake mechanism for electric motor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3707207A (en) * 1969-09-06 1972-12-26 Aisin Seiki Spot disc brakes for vehicles
DE2165817A1 (en) * 1970-12-30 1972-08-03 Isuzu Motors Ltd Partial disc brake
JPS5712135A (en) * 1980-06-25 1982-01-22 Nissin Kogyo Kk Multiple-disk brake for vehicle
US4576255A (en) * 1983-06-30 1986-03-18 Societe Anonyme D.B.A. Multi-disc brakes
JPS61112833A (en) * 1984-11-05 1986-05-30 Nippon Air Brake Co Ltd Disc brake
US4798268A (en) * 1986-10-29 1989-01-17 Bendix France Multiple disc brake
US5437351A (en) * 1993-12-23 1995-08-01 Rexnord Corporation Friction disk brake mechanism for electric motor

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 071 (M - 126) 6 May 1982 (1982-05-06) *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 301 (M - 525) 14 October 1986 (1986-10-14) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1234992A2 (en) * 2001-02-26 2002-08-28 Meritor Heavy Vehicle Systems, LLC A brake rotor assembly and caliper assembly
EP1234992A3 (en) * 2001-02-26 2004-03-24 Meritor Heavy Vehicle Systems, LLC A brake rotor assembly and caliper assembly
WO2004025133A1 (en) * 2002-09-10 2004-03-25 Haldex Brake Products Ab Support for sliding brake discs
GR1009752B (en) * 2019-05-13 2020-05-29 Αλεξανδρος Κωνσταντινου Αγγελιδακης Car's brakes with multiplate disc brakes

Also Published As

Publication number Publication date
AU2002213523A1 (en) 2002-04-22

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