GB1586200A – Brake pad assembly
– Google Patents
GB1586200A – Brake pad assembly
– Google Patents
Brake pad assembly
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Info
Publication number
GB1586200A
GB1586200A
GB3847977A
GB3847977A
GB1586200A
GB 1586200 A
GB1586200 A
GB 1586200A
GB 3847977 A
GB3847977 A
GB 3847977A
GB 3847977 A
GB3847977 A
GB 3847977A
GB 1586200 A
GB1586200 A
GB 1586200A
Authority
GB
United Kingdom
Prior art keywords
brake pad
pad assembly
friction material
indicating member
backing plate
Prior art date
1976-09-17
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.)
Expired
Application number
GB3847977A
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.)
TOKIO Ltd
Original Assignee
TOKIO 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.)
1976-09-17
Filing date
1977-09-15
Publication date
1981-03-18
1977-09-15
Application filed by TOKIO Ltd
filed
Critical
TOKIO Ltd
1981-03-18
Publication of GB1586200A
publication
Critical
patent/GB1586200A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
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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
F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
F16D66/02—Apparatus for indicating wear
Description
(54) BRAKE PAD ASSEMBLY
(71) We, TOKICO LTD., a Japanese body corporate of 6-3, Fujimi 1-chome, Kawasaki-ku, Kawasaki-shi, Kanagawaken, Japan, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:
This invention relates to a brake pad assembly for use in a disc brake.
One prior art brake pad assembly includes a recess formed in peripheral surface of friction material secured to a backing plate of the brake pad with red paint painted in the recess for indicating the limit of wear of the friction material, whereby, the brake pad is replaced when, for example, the red painted recess contacts with a rotatable disc.
However, the recess has usually been formed by cutting or machining operation after the brake pad is formed, thus increasing additional working process and manufacturing costs.
According to the present invention there is provided a brake pad assembly comprising a friction material secured to one side surface of a backing plate, and an indicating member for indicating the limit of wear of the friction material, the indicating member being a distinctive colour with respect to the friction material or the backing plate and being secured on said one side surface of the backing plate at a location where the friction material is not attached.
The present invention will be described more fully by way of example in conjunction with the accompanying drawings, in which:
Figure 1 is a front view of a brake pad assembly exemplifying the present invention;
Figure 2 is a cross-sectional view taken along line II-II of Figure 1;
Figure 3a is a view showing an indicating member; and
Figure 3b is a view showing a modified form of the indicating member.
The brake pad assembly 3 shown in Figures 1 and 2 comprises a backing plate 1 and friction material 2 secured on one surface of the backing plate 1. A pair of openings 3a and 3b are formed in the backing plate 1, and when the brake pad assembly 3 is installed in a disc brake a pair of pins (not shown) extend respectively through the openings 3a and 3b to guide sliding movement of the brake pad 3 when the pad is moved toward or away from a rotatable disc (not shown).
A hole 4 is formed in the backing plate 1, and an indicating member 5 having a configuration such as shown in Figure 3a or
Figure 3b is secured to the backing plate 1 with stem portion Sa thereof being fitted in the hole 4. The indicating member 5 is located on the side of the backing plate 1 where the friction material 2 is secured thereon and at a location which is not covered by the friction material 2, and is adapted to indicate the limit of wear of the friction material 2. The indicating member 5 projects from the backing plate 1 toward the disc by a predetermined amount, therefore, when the friction material 2 wears by a predetermined amount, the indicating member 5 will contact with the disc in applying brake to notify that the brake pad shall be replaced.
The indicating member 5 is, preferably, formed of a material such as aluminium, synthetic resin or the like which has a hardness lower than the disc to prevent wear or damage of the disc in contacting with the indicating member, and has a good heatresisting characteristics. Further, the indicating member is formed of a material having a distinct colour with respect to the friction material and/or the backing plate or, preferably, is painted in a distinct color such as red. Thus, it is very easy to detect the amount of wear of friction material 2 and to determine the time for replacing the brake pad by simply observing the relative position of the indicating member 5 and the disc from outside of the disc brake.
The hole 4 mounting the indicating member 5 may be formed while the backing plate 1 is formed by press work, thus, no additional cost is required. Further, the indicating member 5 can be mounted on the backing plate 1 easily.
Claims (5)
WHAT WE CLAIM IS:
1. A brake pad assembly comprising a friction material secured to one side surface of a backing plate, and an indicating member for indicating the limit of wear of the friction material, the indicating member being a distinctive colour with respect to the friction material or the backing plate and being secured on said one side surface of the backing plate at a location where the friction material is not attached.
2. A brake pad assembly as claimed in claim 1 in which the distinctive colour is applied to the indicating member.
A A disc brake assembly comprising a rotatable disc and at least one brake pad assembly as claimed in claim 1 or 2, the indicating member being formed of a material whose hardness is lower than that of the disc which the brake pad assembly is engageable during braking.
4. A brake pad assembly constructed and adapted to operate substantially as hereinbefore particularly described with reference to and as illustrated in Figs. 1 to 3a of the accompanying drawings.
5. A brake pad assembly constructed and adapted to operate substantially as hereinbefore particularly described with reference to Fig. 3b of the accompanying drawings.
GB3847977A
1976-09-17
1977-09-15
Brake pad assembly
Expired
GB1586200A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
JP1976125046U
JPS5757230Y2
(en)
1976-09-17
1976-09-17
Publications (1)
Publication Number
Publication Date
GB1586200A
true
GB1586200A
(en)
1981-03-18
Family
ID=14900486
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB3847977A
Expired
GB1586200A
(en)
1976-09-17
1977-09-15
Brake pad assembly
Country Status (3)
Country
Link
JP
(1)
JPS5757230Y2
(en)
BR
(1)
BR7706196A
(en)
GB
(1)
GB1586200A
(en)
Cited By (8)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US5139114A
(en)
*
1991-03-18
1992-08-18
Abex Corporation
Visible brake block wear indicator
EP0679817A1
(en)
*
1994-04-26
1995-11-02
Nisshinbo Industries Inc.
Drum brake device
EP0693635A1
(en)
*
1994-07-19
1996-01-24
Nisshinbo Industries, Inc.
Friction pad
EP0737824A1
(en)
*
1995-04-13
1996-10-16
Madison Cycles Plc
Improvements to brake blocks
US5799754A
(en)
*
1994-08-08
1998-09-01
Ferodo Abex Sa
Marking brake linings
DE10123681A1
(en)
*
2001-05-16
2002-11-21
Bayerische Motoren Werke Ag
Wear-monitoring device especially for partially disc brakes of motorcycles has peg fastened to brake linings to drop off when wear limit is reached
WO2008028600A1
(en)
2006-09-06
2008-03-13
Knorr-Bremse Systeme für Nutzfahrzeuge GmbH
Disc brake, in particular for a commercial vehicle, and brake pad for a disc brake
WO2008110259A1
(en)
*
2007-03-13
2008-09-18
Daimler Ag
Detection of lining wear using signal pins
Family Cites Families (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS5223942Y2
(en)
*
1973-05-21
1977-05-31
JPS5020992U
(en)
*
1973-06-25
1975-03-10
1976
1976-09-17
JP
JP1976125046U
patent/JPS5757230Y2/ja
not_active
Expired
1977
1977-09-15
GB
GB3847977A
patent/GB1586200A/en
not_active
Expired
1977-09-16
BR
BR7706196A
patent/BR7706196A/en
unknown
Cited By (8)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US5139114A
(en)
*
1991-03-18
1992-08-18
Abex Corporation
Visible brake block wear indicator
EP0679817A1
(en)
*
1994-04-26
1995-11-02
Nisshinbo Industries Inc.
Drum brake device
EP0693635A1
(en)
*
1994-07-19
1996-01-24
Nisshinbo Industries, Inc.
Friction pad
US5799754A
(en)
*
1994-08-08
1998-09-01
Ferodo Abex Sa
Marking brake linings
EP0737824A1
(en)
*
1995-04-13
1996-10-16
Madison Cycles Plc
Improvements to brake blocks
DE10123681A1
(en)
*
2001-05-16
2002-11-21
Bayerische Motoren Werke Ag
Wear-monitoring device especially for partially disc brakes of motorcycles has peg fastened to brake linings to drop off when wear limit is reached
WO2008028600A1
(en)
2006-09-06
2008-03-13
Knorr-Bremse Systeme für Nutzfahrzeuge GmbH
Disc brake, in particular for a commercial vehicle, and brake pad for a disc brake
WO2008110259A1
(en)
*
2007-03-13
2008-09-18
Daimler Ag
Detection of lining wear using signal pins
Also Published As
Publication number
Publication date
JPS5343184U
(en)
1978-04-13
BR7706196A
(en)
1978-06-13
JPS5757230Y2
(en)
1982-12-08
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Legal Events
Date
Code
Title
Description
1981-12-02
CSNS
Application of which complete specification have been accepted and published, but patent is not sealed
