GB2114243A - A disc brake assembly and pad support structure therefor - Google Patents

A disc brake assembly and pad support structure therefor Download PDF

Info

Publication number
GB2114243A
GB2114243A GB08234836A GB8234836A GB2114243A GB 2114243 A GB2114243 A GB 2114243A GB 08234836 A GB08234836 A GB 08234836A GB 8234836 A GB8234836 A GB 8234836A GB 2114243 A GB2114243 A GB 2114243A
Authority
GB
United Kingdom
Prior art keywords
pad
rotor
disc brake
pair
brake assembly
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
GB08234836A
Other versions
GB2114243B (en
Inventor
Masahiro Yamaguchi
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.)
Akebono Brake Industry Co Ltd
Original Assignee
Akebono Brake Industry Co 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 Akebono Brake Industry Co Ltd filed Critical Akebono Brake Industry Co Ltd
Publication of GB2114243A publication Critical patent/GB2114243A/en
Application granted granted Critical
Publication of GB2114243B publication Critical patent/GB2114243B/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
    • 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
    • F16D65/0972—Resilient means interposed between pads and supporting members or other brake parts transmitting brake reaction force, e.g. elements interposed between torque support plate and pad

Abstract

The assembly has a fixed support 2 with a pair of arm parts 3 arranged to straddle the periphery of the rotor 1, a pair of opposed friction pads 6 disposed between the arm parts 3, each friction pad being provided with lugs 9 which extend from both ends of the friction pad in the circumferential direction of the rotor: a pad support structure includes pad clips 12 which mounted one on each arm part 3, act as pad guide plates and have spring parts 12b arranged to extend inwardly on both sides of the rotor (i.e. in the diametral direction of the rotor). These parts 12b of the clips engage the friction pads and serve resilient to urge the friction pads 6 in the direction F. Parts 12a, 12c engage the arm parts 3 as shown. The clips also act as pad retracting members. <IMAGE>

Description

SPECIFICATION A disc brake assembly and pad support structure therefor This invention relates to a disc brake assembly, and also to a pad support structure for a disc brake assembly.
Many conventional disc brake assemblies are of the type having a pair of friction pads carried by a support which is formed in one unified body with an axle or housing therefor. A caliper which is arranged to urge the two friction pads against the two side faces of the rotor, is carried by a pin slide mechanism to be movable in the axial direction of the rotor.
For such arrangement, various devices have been made to ensure the friction pads may slide smoothly in the axial direction of the rotor, and to prevent the friction pads dragging under a non-braking condition. Such devices often include an arrangement to preventthefriction pads from rattling when in a non-braking condition. In many cases, a disc brake arrangement of this type has included an anti-rattle spring which exerts a spring force between the caliper and each friction pad in the direction of separation of the two pads.
As is typically employed in the support structure of an integral knuckle type of disc brake assembly, an anti-rattle spring can advantageously be used in the pad support structure of the type having the friction pads hung from a pair of arm parts which are disposed across the periphery of the rotor and which are spaced in the circumferential direction of the rotor. In the case of a brake assembly of this type, however, the use of an anti-rattle spring tends to result in the caliper being unstably disposed in the axial direction of the rotor because the spring force of the anti-rattle spring acts on the caliper in a reactionary manner.Since one of the legs of the caliper is typically in the shape of a pawl merely to serve as a reaction part with respect to the other leg which contains a hydraulic cylinder device therein, the pawl leg comes into a floating state when the position of the caliper becomes unstable due to the use of the anti-rattle spring.
It is therefore a principal object of the invention to provide a pad support structure for a disc brake assembly which is capable of preventing the friction pads from rattling by supporting them essentially independently of the brake caliper, so that the positioning of the caliper will not become unstable.
Accordingly, one aspect of this invention provides a disc brake assembly including a fixed support which has a pair of arm parts arranged to straddle the periphery of a rotor at two positions spaced circumferentially of the rotor, a pair of friction pads arranged respectively one one each side of the rotor between the pair of arms parts of the fixed support for frictional engagement with the rotor, each friction pad being provided with a pair of protruding lugs extending from the two ends respectively of the pad in the circumferential direction of the rotor and engaging the surfaces of the arm parts located on the outer sides thereof considering the diametral direction of the rotor, and portions of the two end faces of the friction pads engaging opposed surfaces of said pair of arm parts, there being a pair of pad clips mounted respectively one on each arm part the fixed support and which have spring parts arranged to extend inwardly on both sides of the rotor in the diametral direction thereof and resiliently to engage the end faces of the friction pads so as resiliently to engage the friction pads with the arm parts.
Preferably, each pad clip is provided with pad guide faces which overlie the pad-engaging faces of the associated arm part of said fixed support.
Moreover, by arranging the separation of the opposed spring parts of the pair of pad clips two increase as the distance from said rotor increases, pad dragging may be minimised, as the spring parts may urge the pads away from the rotor when the brake is not operating.
This invention extends to a pad support structure per se for a disc brake assembly which includes a fixed support having a pair of arm parts arranged to straddle the periphery of a rotor at two positions spaced circumferentially of the rotor, a pair of friction pads arranged respectively one on each side of the rotor between the pair of arm parts of the fixed supportforfriction engagement with the rotor, each friction pad being provided with a pair of protruding lugs extending from the two ends respectively of the pad in the circumferential direction of the rotor and engaging the surfaces of the arm parts located on the outer sides thereof considering the diametral direction of the rotor, and portions of the two end faces of the friction pads engaging opposed surfaces of said pair of arm parts.Such a disc brake assembly is referred to hereinafter as "of the kind described".
According therefore to another aspect of this invention, there is provided a pad support structure for a disc brake assembly of the kind described, which support structure includes a pair of pad clips mounted respectively one on each arm part of the fixed support and which have spring parts arranged to extend inwardly on both sides of the rotor in the diametral direction thereof and arranged resiliently to engage the end faces of the friction pads so as resiliently to engage the friction pads with arm parts.
By way of example only, one specific embodiment of this invention will now be described in detail, reference being made to the accompanying drawings in which: Figure 1 is a plan view, partly in section, of the embodiment of disc brake constructed in accordance with the present invention; and Figure 2 is a rear view showing a part of the disc brake of Figure 1.
The preferred embodiment of the invention which is illustrated in Figures 1 and 2, includes a brake rotor 1 and a knuckle member 2 having arm parts 3 which extend to straddle the periphery of the rotor 1.
These arm parts 3 are arranged as a pair and are The drawing(s) originally filed was/were informal and the print here reproduced is taken from a later filed formal copy.
spaced in the circumferential direction of the rotor.
Each of the arm parts 3 is provided with a face extending outwardly in the diametral direction of the rotor, which face is hereinafter referred to as "the upper face". The arm parts 3 are further provided with a pair of oppused faces 5, referred to hereinafter as "the inner side faces".
Two friction pads 6 are oppositely arranged one adjacent each face of the rotor 1. Each of the friction pads 6 has a lining 7 and a back plate 8 to which the lining 7 is secured. The back plate 8 is provided with lugs 9 which protrude from two corners (the upper corners as viewed on the drawings) of the back plate 8 so as to lie along the circumferential direction of the rotor 1.
A caliper 10 is arranged to straddle the periphery of the rotor 1 and is carried by a pair of slide pin type slidable support devices 11. The caliper may thus arranged slide in the axial direction of the rotor, relative to the arm parts 3. Since the caliper and the slidable support devices are not directly related to the present invention, the details thereof are omitted from the present description.
Pad clips 12 are provided on each of the arm parts 3, respectively, of the pair thereof. In this embodiment, each of the pad clips 12 comprises a body part 12a which is formed from a flat plate material by bending the plate into an L-shape the body part 1 2a overlying the upper face 4 and the inner side face 5 of the associated arm part 3, and being arranged to guide the friction pad. The clip also has a spring part 12b which extends from the body part 12a inwardly in the diametral direction of the rotor 1, on each side thereof. Each of the springs 12b extends in a wavy state to have a spring action, and is arranged to have its fore end elastically engaging a recess 8a formed in each side of the back plate 8 of the friction pad 6.
Further, the body part 12a of the pad clip 12 embraces the inner side of the arm part 3 in a C-like manner, while bent flanges 12e formed on both sides of the pad clip are arranged to extend in the axial direction of the rotor thereby to engage the end faces of the arm part 3, to allow stable mounting of the clip.
Referring to Figure 2, the spring part 1 2b which extends downwardly from the body part 1 2a of each pad clip 12 pushes the friction pad 6 toward the centre of the rotor 1 (or in the direction of the arrow 'F' shown in Figure 2). Each of the friction pads 6 is thus effectively prevented from rattling, by the pair of pad clips associated therewith.
In addition to the advantageous effect mentioned above the pad clips are arranged in such a manner as readily to permit the utilization thereof as pad guide plates. Therefore, if the pad clips are made from some material which either does not rust or does not rust readily, the pad clips will stably and smoothly guide the friction pads without deterioration with age.
Since the friction pads 6 are arranged to slide in the axial direction of the rotor, each spring part 12b of the pad clips 12 must have a sufficient length to engage satisfactorily with the friction pad. This gives rise to another advantage, in that the spring parts of the clips can also be utilized as pad retracting members, acting when the friction pads are to be freed, on releasing the brake operation. More specifically, the spring parts 1 2b of the pair of pad clip 12 are arranged to lie at an angle to each other so that the separation therebetween increases as distance from the rotor 1 increases, as shown in Figure 1.
With the friction pads 6 engaged with the spring parts formed in this way, spring forces are constantly exerted on the friction pads in such a direction as to move the pads away from the rotor 1. Accordingly, when the brake is released, the friction pads 6 are moved away from the rotor 1 by the spring forces, so preventing the pads dragging.
In assembling a brake embodying the invention, each pad clip 12 is fixed to the respective arm part 3 and then the friction pads 6 can be readily mounted in the state as shown in the drawing by pushing each pad from above toward the centre of the rotor 1, as viewed in Figure 2.
The disc brake pad support structure according to the invention gives a good anti-rattle effect by virtue of the pad clips, which have a relatively simple shape. The invention, therefore, has great advantages when used in practical applicaitons.

Claims (9)

1. A disc brake assembly including a fixed support which has a pair of arm parts arranged to straddle the periphery of a rotor at two positions spaced circumferentially of the rotor, a pair of friction pads arranged respectively one on each side of the rotor between the pair of arm parts of the fixed supportforfrictional engagement with the rotor, each friction pad being provided with a pair of protruding lugs extending from the two ends respectively of the pad in the circumferential direction of the rotor and engaging the surfaces of the arm parts located on the outer sides thereof considering the diametral direction of the rotor, and portions of the two end faces of the friction pads engaging opposed surfaces of said pair of arm parts, there being a pair of pad clips mounted respectively one on each arm part the fixed support and which have spring parts arranged to extend inwardly on both sides of the rotor in the diametral direction thereof and resiliently to engage the end faces of the friction pads so as resiliently to engage the friction pads with the arm parts.
2. A disc brake assembly according to claim 1, wherein each pad clip is provided with pad guide faces which overlie the pad-engaging faces of the associated arm part of said fixed support.
3. A disc brake assembly according to claim 2, wherein the pad clips are made of a material which does not rust or which does not readily rust.
4. A disc brake assembly according to claim 1, wherein the spring parts of the pad clips are arranged to engage recesses provided in the ends of the friction pads.
5. A disc brake assembly according to claim 1, wherein the spring parts of the pad clips are arranged to exert a force on the friction pads towards the axis of the rotor
6. A disc brake assembly according to claim 1, wherein the separation of the spring parts of the pair of pad clips is arranged to increase as the distance from said rotor increases.
7. A disc brake assembly according to claim 1, wherein the spring parts of the pad clips are formed with a wave-like shape.
8. A disc brake assembly as claimed in claim 1 and substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
9. A pad support structure for a disc brake assembly of the kind described hereinbefore, which support structure includes a pair of pad clips mounted respectively one on each arm part the fixed support and which have spring parts arranged to extend inwardly on both sides of the rotor in the diametral direction thereof and resiliently to engage the end faces of the friction pads so as resiliently to engage the friction pads with the arm parts.
GB08234836A 1981-12-07 1982-12-07 A disc brake assembly and pad support structure therefor Expired GB2114243B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18192181U JPS5886936U (en) 1981-12-07 1981-12-07 Disc brake pad support structure

Publications (2)

Publication Number Publication Date
GB2114243A true GB2114243A (en) 1983-08-17
GB2114243B GB2114243B (en) 1986-06-11

Family

ID=16109231

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08234836A Expired GB2114243B (en) 1981-12-07 1982-12-07 A disc brake assembly and pad support structure therefor

Country Status (2)

Country Link
JP (1) JPS5886936U (en)
GB (1) GB2114243B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2172068A (en) * 1985-01-19 1986-09-10 Tokico Ltd Disc brake
GB2178807A (en) * 1985-08-02 1987-02-18 Automotive Products Plc A disk brake caliper assembly
EP0352559A1 (en) * 1988-07-18 1990-01-31 Akebono Brake Industry Co., Ltd. Disk brake
US5113978A (en) * 1988-05-07 1992-05-19 Alfred Teves Gmbh Spot type disc brake
DE4401844A1 (en) * 1994-01-22 1995-07-27 Teves Gmbh Alfred Caliper disc brake with housing
WO1997035121A1 (en) * 1996-03-18 1997-09-25 Lucas Industries Public Limited Company Part-lined disc brake
EP2917604B1 (en) * 2012-11-09 2021-05-26 Bendix Commercial Vehicle Systems LLC Disc brake pad mounting and retention system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5565732A (en) * 1978-11-14 1980-05-17 Hosei Brake Kogyo Kk Disk brake
JPS6021562Y2 (en) * 1979-05-29 1985-06-27 ワタナベエンジニアリング株式会社 Friction pad support device for vehicle disc brakes
JPS56129626U (en) * 1980-03-04 1981-10-02

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2172068A (en) * 1985-01-19 1986-09-10 Tokico Ltd Disc brake
GB2172068B (en) * 1985-01-19 1989-06-07 Tokico Ltd Disc brake
GB2178807A (en) * 1985-08-02 1987-02-18 Automotive Products Plc A disk brake caliper assembly
US5113978A (en) * 1988-05-07 1992-05-19 Alfred Teves Gmbh Spot type disc brake
EP0352559A1 (en) * 1988-07-18 1990-01-31 Akebono Brake Industry Co., Ltd. Disk brake
US5025897A (en) * 1988-07-18 1991-06-25 Akebono Brake Industry Co., Ltd. Disk brake
DE4401844A1 (en) * 1994-01-22 1995-07-27 Teves Gmbh Alfred Caliper disc brake with housing
WO1997035121A1 (en) * 1996-03-18 1997-09-25 Lucas Industries Public Limited Company Part-lined disc brake
EP0984188A2 (en) 1996-03-18 2000-03-08 Lucas Industries Public Limited Company Part-lined disk brake
EP0984188A3 (en) * 1996-03-18 2000-08-02 Lucas Industries Public Limited Company Partly lined disk brake
EP2917604B1 (en) * 2012-11-09 2021-05-26 Bendix Commercial Vehicle Systems LLC Disc brake pad mounting and retention system

Also Published As

Publication number Publication date
JPH022096Y2 (en) 1990-01-18
GB2114243B (en) 1986-06-11
JPS5886936U (en) 1983-06-13

Similar Documents

Publication Publication Date Title
US3403756A (en) Resilient supporting means for calipertype disc brake
US4134477A (en) Sliding caliper disc brakes
KR940003908B1 (en) Disc brake spring and disc brake fitted with such a spring
JP2735616B2 (en) Spot type disc brake device
US4408681A (en) Disc brake
US4506767A (en) Pad clip for disc brake
WO1998027355A1 (en) Push-pull caliper disc brake
JPS61165034A (en) Releasing spring for disk brake
CA1221040A (en) Spring for a disc brake
GB1462381A (en) Disc brakes for vehicles
US4422534A (en) Disc brake
JPH0127287B2 (en)
GB2114243A (en) A disc brake assembly and pad support structure therefor
US4607728A (en) Pad spring for disc brake and having restricting portion
CN108626273B (en) Disc brake for vehicle
JP2590244Y2 (en) Friction pad support device for disc brake
US4560037A (en) Spring for a disc brake
JPH0228736B2 (en)
US4027751A (en) Noise-reducing spring for a disc brake
JPS63312526A (en) Spring for disk brake
JPH0543299Y2 (en)
JPH0611361Y2 (en) Disc brakes for vehicles
JPH064110Y2 (en) Disc brake
JPH0733856B2 (en) Disk break
JPH0223868Y2 (en)

Legal Events

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

Effective date: 19971207