GB2033510A - Floating caliper disc brake - Google Patents

Floating caliper disc brake Download PDF

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Publication number
GB2033510A
GB2033510A GB7935899A GB7935899A GB2033510A GB 2033510 A GB2033510 A GB 2033510A GB 7935899 A GB7935899 A GB 7935899A GB 7935899 A GB7935899 A GB 7935899A GB 2033510 A GB2033510 A GB 2033510A
Authority
GB
United Kingdom
Prior art keywords
brake
disc
guide bolts
support member
brake 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.)
Granted
Application number
GB7935899A
Other versions
GB2033510B (en
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.)
Continental Teves AG and Co OHG
Original Assignee
Alfred Teves GmbH
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 Alfred Teves GmbH filed Critical Alfred Teves GmbH
Publication of GB2033510A publication Critical patent/GB2033510A/en
Application granted granted Critical
Publication of GB2033510B publication Critical patent/GB2033510B/en
Expired 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
    • 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
    • F16D55/22—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 by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—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 by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/225—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 by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
    • F16D55/226—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 by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
    • F16D55/2265—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 by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
    • F16D55/227—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 by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing by two or more pins
    • 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
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0008—Brake supports

Landscapes

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

Abstract

The brake includes a brake disc (30); a brake support member with arms (18, 21) which extend radially with respect to the brake disc axis of rotation and are in a plane parallel to a friction surface (9) of the disc; guide bolts (14, 24) which extend through bores (27) of the arms (18, 21); brake shoes (4, 16) axially slidably held by the guide bolts (14, 24), and a brake caliper (2) which extends over the disc (30), the shoes (4, 16) and the brake support member, the guide bolts (14, 24) extending through bores (22) of the caliper legs (19, 36). To provide additional support for the guide bolts and minimise the bending load thereon, projections (7, 31) of the arms (18, 21) extend over the outer perimeter of the brake disc (30) and the guide bolts pass through bores (32) therein at a position between the brake shoes (4, 16). This arrangement also minimises the overall space requirement of the brake. <IMAGE>

Description

SPECIFICATION Floating caliper disc brake This invention relates to a floating caliper disc brake including a brake support member receiving the brake torque, arranged adjacent the brake disc and having two arms extending radially outwardly in parallel with the brake disc and each having a bore which is penetrated by a respective guide bolt extending across the brake disc, including brake shoes arranged on opposite sides of the brake disc, axially slidably held by the guide bolts and bearing against the guide bolts in the brake disc circumferential direction, and including a brake caliper fitting over the periphery of the brake disc, over the brake shoes and the arms of the brake support member, with the caliper's legs extending in parallel with the brake disc being penetrated by the free ends of the guide bolts.
A disc brake of this type is known from French Patent No. 1,459,110. The arms of the brake support member have projections extending across the brake disc and connected with each other on the disc side remote from the brake support member.
The frame thus formed embraces the brake shoes, part of the brake disc and the brake caliper's leg lying on the disc side remote from the brake support member. The guide bolts penetrate that part of the frame that is in parallel with the brake disc and lies on the disc side remote from the brake support member and are thus held on both sides of the brake disc. This type of construction necessitates, however, a substantially greater overall length of the disc brake.
It is an object of the present invention to reduce the space requirements of the brake, the weight of the brake support member and its manufacturing costs.
According to the present invention there is provided a floating caliper disc brake including a brake disc; a brake support member, for receiving the brake torque, arranged adjacent the brake disc and having two arms extending radially outwardly with respect to the brake disc axis of rotation and in a plane parallel with the friction surfaces of the brake disc, the arms each having a first bore which is penetrated by a respective guide bolt extending across the external perimeter of the brake disc; brake shoes, arranged on opposite sides of the brake disc, axially slidably held by the guide bolts and bearing against the guide bolts in the brake disc circumferential direction; and a brake caliper fitting over the external perimeter of the brake disc, over the brake shoes and the arms of the brake support member, legs of the caliper extending in parallel with the friction surfaces of the brake disc being penetrated by the free ends of the guide bolts, and wherein each guide bolt also bears upon a projection of the respective arm of the brake support member, which projections areOpositioned radially outwardly with respect to the brake disc external perimeter and the guide bolts bear on the projections at a position between the brake shoes.
An embodiment of the invention will now be described with reference to the accompanying drawings, in which: Figure 1 is a top plan view, partly in section, of a floating caliper disc brake, and Figure 2 is a view, partly in section, of the brake-support-member side of the floating caliper disc brake of Fig. 1.
Reference numerals 18 and 21 in Fig. 1 designate the arms of a brake support member 1 (Fig. 2) which extend radially outwardly relative to the brake disc axis of rotation and in a plane parallel with the plane of brake disc and have at their ends a bore 27 penetrated by a guide bolt 1 4 or 24 respectively extending across the perimeter of the brake disc 30.
The guide bolts are each supported also in a bore such as 32 arranged between the friction surfaces 8 and 9 of the disc but radially outwardly with respect to the brake disc in respective projections 7 or 31 of the arms 1 8 and 21 of the brake support member 1, so that the guide bolts 1 4 and 24 are divided into three sections namely 6, 10 and 1 5 and 23, 29 and 34 respectively.
In this arrangement, only the middle sections 10 and 29, respectively, are held on both sides, whilst the two other sections 6, 1 5 and 23, 34, respectively, are only held on one side at the end lying towards the brake disc. Locking pins 1 3 which are received in a respective bore 11 in arms 1 8 and 21 of the brake support member and are in positive engagement with circumferential grooves such as 26 of guide bolt 24 in bore 27, secure the guide bolts from axial movement. The locking pins 1 3 themselves are secured against disengagement by being formed such (Fig. 2) that they partially embrace the respective arms 1 8 and 21.
The brake shoes 4 and 1 6 which are composed of friction pads 3 and 1 7 and backing plates 20 and 35 are axially slidably held by the guide bolts. By means of semicircular recesses 39 (Fig. 2) which are provided at the ends 5 and 1 2 of the backing plates and which are in positive engagement with guide bolt 14, they are held on the disc exit side in relation to the main direction of rotation 37, whereas on the disc entry side the ends 28 and 33 of the backing plates are provided with bores through which guide bolt 24 extends. Thus brake shoe 1 6 is held between brake support member 1 and brake disc 30 by sections 10 and 29 of the guide bolts, which sections are supported on both sides, while the other brake shoe 4 is held by sections 6 and 34 which are supported on one side.Brake caliper 2, which embraces with its legs 1 9 and 36 the whole arrange menu, is axially slidably held on the free sections 6, 15, 23 and 34 of the guide bolts 14 and 24 which extend through bores 22 in its legs. Guiding elements 25 which are buttoned in the bores and embrace the guide bolts ensure the sliding ability and small clearance of the guide. A hydraulic actuating device 38 inserted in leg 1 9 of brake caliper 2 moves the brake shoes into abutment with the brake disc. With the brake disc rotating in the main direction of rotation 37, it tends to drag the brake shoes along.The brake shoes, however, bear against the guide bolts 1 4 and 24 and transfer the brake force occurring nearly equally to both arms of the brake support member without the guide bolts being subjected to substantial bending loads, because the lever arm between the point of introduction of force of the brake shoes to the guide bolt and the bearing area on the arm of the brake support member is in the worst case only equal to the thickness of the friction pad.
This design ensures that the points of force impact of the brake shoes on the guide bolts are always at the least possible distance from the points of fastening of the guide bolts in the brake support member. The bending load on the guide bolts is maintained low, thus the bearing arrangement strengthens the guide bolts.
By arranging the projections 7 and 31 of the brake support member radially outwardly above the brake disc between the brake shoes the guide bolt supported there lie within the friction surfaces of the brake disc. The length of the guide bolts is reduced to a minimum which again result in a reduced space requirement of the brake. The entire length of the guide bolt is made use of.
To secure the guide bolt axially immovably in the bore of the brake support member, the section which is subject to the least bending load is chosen. Thus it is possible to use a readily disengageable locking pin 1 3 positively engaging into the guide bolt, without the guide bolt being less strong when subjected to load.
By arranging that the brake shoes are in positive engagement with both guide bolts in the main direction of rotation of the brake disc, a nearly equal distribution of the occurring brake forces to both guide bolts is ensured.
For brake shoe replacement only guide bolt 24 needs to be removed. The brake caliper is pivoted on bolt 1 4 whereupon the brake shoes are ready to be removed without difficulty.

Claims (6)

1. A floating caliper disc brake including a brake disc; a brake support member, for receiving the brake torque, arranged adjacent the brake disc and having two arms extending radially outwardly with respect to the brake disc axis of rotation and in a plane parallel with the friction surfaces of the brake disc, the arms each having a first bore which is penetrated by a respective guide bolt extending across the external perimeter of the brake disc; brake shoes, arranged on opposite sides of the brake disc, axially slidably held by the guide bolts and bearing against the guide bolts in the brake disc circumferential direction; and a brake caliper fitting over the external perimeter of the brake disc, over the brake shoes and the arms of the brake support member, legs of the caliper extending in parallel with the friction surfaces of the brake disc being penetrated by the free ends of the guide bolts, and wherein each guide bolt also bears upon a projection of the respective arm of the brake support member, which projections are positioned radially outwardly with respect to the brake disc external perimeter and the guide bolts bear on the projections at a position between the brake shoes.
2. A floating caliper disc brake as claimed in claim 1, wherein the guide bolts bear on the projections at a position between the friction surfaces of the brake disc.
3. A floating caliper disc brake as claimed in claim 1 or claim 2, wherein the guide bolts are secured axially immovably in the first bores of the brake support member arms.
4. A floating caliper disc brake as claimed in any one of the preceding claims, wherein the brake shoes are in positive engagement with both guide bolts in the main direction of rotation of the brake disc.
5. A floating caliper disc brake substantially as herein described with reference to and as illustrated in Figs. 1 and 2 of the accompanying drawings.
6. The floating caliper and brake support member for the disc brake as claimed in any preceding claim, when made or sold separately.
GB7935899A 1978-10-18 1979-10-16 Floating caliper disc brake Expired GB2033510B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782845275 DE2845275A1 (en) 1978-10-18 1978-10-18 FLOATING SADDLE DISC BRAKE

Publications (2)

Publication Number Publication Date
GB2033510A true GB2033510A (en) 1980-05-21
GB2033510B GB2033510B (en) 1982-10-13

Family

ID=6052445

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7935899A Expired GB2033510B (en) 1978-10-18 1979-10-16 Floating caliper disc brake

Country Status (6)

Country Link
DE (1) DE2845275A1 (en)
ES (1) ES246237Y (en)
FR (1) FR2439334A1 (en)
GB (1) GB2033510B (en)
IT (1) IT1162782B (en)
SE (1) SE7908419L (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0711932A2 (en) * 1994-11-12 1996-05-15 ITT Automotive Europe GmbH Floating caliper for disc brake
WO2008048507A2 (en) * 2006-10-13 2008-04-24 Kelsey-Hayes Company Disc brake assembly and method of assembly
EP2375095A1 (en) * 2010-03-12 2011-10-12 Akebono Corporation (North America) Disc brake comprising slide pins
US8251188B2 (en) 2008-09-17 2012-08-28 Akebono Brake Corporation Disc brake having a pin rail caliper

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1171003A (en) * 1980-12-01 1984-07-17 James P. Scott Disc brake caliper support
DE3934019C1 (en) * 1989-10-11 1991-05-08 Deutsche Perrot-Bremse Gmbh, 6800 Mannheim, De
IT1250323B (en) * 1991-10-25 1995-04-07 Bendix Altecna Spa DISC BRAKE.
EP3779226B1 (en) 2019-08-16 2022-07-06 Meritor Heavy Vehicle Braking Systems (UK) Limited A guide assembly for a disc brake

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194351A (en) * 1963-12-11 1965-07-13 Kelsey Hayes Co Friction pad retaining means for spot type disk brakes
FR1459110A (en) * 1964-09-21 1966-04-29 Disc brake, in particular for motor vehicles
US3375906A (en) * 1966-12-28 1968-04-02 Kelsey Hayes Co Support means for a calipertype disk brake

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0711932A2 (en) * 1994-11-12 1996-05-15 ITT Automotive Europe GmbH Floating caliper for disc brake
EP0711932A3 (en) * 1994-11-12 1997-09-03 Teves Gmbh Alfred Floating caliper for disc brake
WO2008048507A2 (en) * 2006-10-13 2008-04-24 Kelsey-Hayes Company Disc brake assembly and method of assembly
WO2008048507A3 (en) * 2006-10-13 2008-07-31 Kelsey Hayes Co Disc brake assembly and method of assembly
US8251188B2 (en) 2008-09-17 2012-08-28 Akebono Brake Corporation Disc brake having a pin rail caliper
EP2375095A1 (en) * 2010-03-12 2011-10-12 Akebono Corporation (North America) Disc brake comprising slide pins

Also Published As

Publication number Publication date
IT1162782B (en) 1987-04-01
DE2845275C2 (en) 1990-10-18
ES246237U (en) 1980-02-01
IT7926447A0 (en) 1979-10-12
ES246237Y (en) 1980-08-16
FR2439334A1 (en) 1980-05-16
GB2033510B (en) 1982-10-13
SE7908419L (en) 1980-04-19
DE2845275A1 (en) 1980-04-30
FR2439334B1 (en) 1982-06-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19921016