CA1045055A - Brake-pad assembly - Google Patents
Brake-pad assemblyInfo
- Publication number
- CA1045055A CA1045055A CA226,837A CA226837A CA1045055A CA 1045055 A CA1045055 A CA 1045055A CA 226837 A CA226837 A CA 226837A CA 1045055 A CA1045055 A CA 1045055A
- Authority
- CA
- Canada
- Prior art keywords
- pads
- plate
- recesses
- brake
- pair
- 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.)
- Expired
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
- 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
-
- 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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/04—Attachment of linings
- F16D69/0408—Attachment of linings specially adapted for plane linings
-
- 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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D2069/002—Combination of different friction materials
-
- 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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D2069/004—Profiled friction surfaces, e.g. grooves, dimples
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
BRAKE-PAD ASSEMBLY
Abstract of the Disclosure The assembly includes two brake pads inserted in box-shaped recesses of the carrier or backing plate. The two brake pads each have the shape of a prism with a parallelogram cross-sectional area and they are disposed symmetrically with respect to one another in the peripheral direction of the disc so that they approximate a sector of a circle.
Abstract of the Disclosure The assembly includes two brake pads inserted in box-shaped recesses of the carrier or backing plate. The two brake pads each have the shape of a prism with a parallelogram cross-sectional area and they are disposed symmetrically with respect to one another in the peripheral direction of the disc so that they approximate a sector of a circle.
Description
r~~
1~045 Background of the Invention This invention relates to a brake-pad assembly for a spot-type disc -brake comprising a carrier or backing plate with box-shaped recesses and ~iction pads inserted and secured therein.
From the German Patent No. 1,183,806 a disc brake is known wherein the carrier plate of the brake-pad assembly is provided with box-shaped recesses which serve to receive the friction pads. The friction pads are shaped like the sectors of a circle and have at their rear sides metal supporting plates which are provided with spring clips to secure the frlction pads in their box-shaped recesses. Each brake-pad assembly carries two sector-shaped friction pads secured in their associated box-shaped recesses which are disposed adjacent to one another in the peripheral direction of the brake disc. A cross member provided between the two box-shaped recesses defines a determined :
distance between the friction pads. I
This brake-pad assembly has the disadvantage that the sector-shaped : ,:
design of the friction pads necessitates expensive and sophisticated apparatus as well as large expenditure of work involved with the manu-facture of the friction pads and the carrier plates.
. . . ~ .
Summary of~the I vention Therefore, it is an ob~ect of this invention to provide a brake-pad ,. ~
assembly for disc brakes which affords simple and cheap manu~acture and permits optimum use to be made of the space available.
A feature o the present invention is the provision of a brake-pad 25assembly for a spot-type disc brake comprising: a carrier plate having a .:
plurality of box-shaped recesses on a face of the carrier plates; and
1~045 Background of the Invention This invention relates to a brake-pad assembly for a spot-type disc -brake comprising a carrier or backing plate with box-shaped recesses and ~iction pads inserted and secured therein.
From the German Patent No. 1,183,806 a disc brake is known wherein the carrier plate of the brake-pad assembly is provided with box-shaped recesses which serve to receive the friction pads. The friction pads are shaped like the sectors of a circle and have at their rear sides metal supporting plates which are provided with spring clips to secure the frlction pads in their box-shaped recesses. Each brake-pad assembly carries two sector-shaped friction pads secured in their associated box-shaped recesses which are disposed adjacent to one another in the peripheral direction of the brake disc. A cross member provided between the two box-shaped recesses defines a determined :
distance between the friction pads. I
This brake-pad assembly has the disadvantage that the sector-shaped : ,:
design of the friction pads necessitates expensive and sophisticated apparatus as well as large expenditure of work involved with the manu-facture of the friction pads and the carrier plates.
. . . ~ .
Summary of~the I vention Therefore, it is an ob~ect of this invention to provide a brake-pad ,. ~
assembly for disc brakes which affords simple and cheap manu~acture and permits optimum use to be made of the space available.
A feature o the present invention is the provision of a brake-pad 25assembly for a spot-type disc brake comprising: a carrier plate having a .:
plurality of box-shaped recesses on a face of the carrier plates; and
-2- ~
.
~)4t5~SS
a friction pad inserted in and secured to each of the recesses, each of the pads having the shape of a prism with a parallelogram cross-section and each of the pads being disposed symmetrically with respect to one another in the peripheral so that the pads approximate a sector of a circle.
It is also possible to arrange a rectangular friction pad between the two parallelogram-shaped friction pads.
The friction pads are advantageously manufactured separately irom the carrier or backing plate and are connected with the latter preferably by bonding. When using adhesive tape for bonding, this has the advan-tageous e*ect of noise attenuation during operatlon.
The division of the friction face oi a brake pad into a number of sectional faces, which is achieved by uslng several indivldual friction pads, considerably reduces the risk of tear due to thermal stresses, An economical and low-cost method of manufacture of such brake pads comprises a plate made from frictional material having a thickness --~
corresponding to that of the desired friction pads is manufactured in the ~`
known manner by pressing and age-hardening, and a plurality of friction pads are cut out of the plate having their iinal forms. Such plates have the advantage that various sizes of friction pads can be cut out and that they permit homogenous manufacture because the friction material need, not flow into anchoring holes or recesses of the carrier plate which causes cavitation in the structure and consequently leads to lack of homogeneity. Further, such plates permit an improved and more even through-hardening of the friction material~ ~`
An advantageous method of cutting the friction pads out of the plate includes cutting parallel parting lines over both the whole length and the '~.
....
whole width of the plate with the longitudinal and transverse parting lines running at angles unequal to 90 degrees.
In an embodiment of the brake-pad assembly constructed in accordance with this invention, the friction pads are arranged on the carrier plate in a spaced relationship to one another. This can be achieved by a cross member separating the two box-shaped recesses. The space between the two friction pads advantageously serves as a drain groove and can also be used or receiving a pad-wear warning arrangement.
In a further advantageous embodiment of the inventive brake-pad ;
assembly, the friction pads have a different resistance to wear. This avoids, on the one hand, that the friction pad on the entry side of the - disc and the friction pad on the exit side of the disc wear unevenly and, on the other hand, largely prevents disturbing noise during braking.
That portion of the friction pad which is inserted into the box-shaped recess of the carrier plate may consist of a material whlch has for example a coefficient of friction lower than that of the friction face and preferably has a high degree of hardness.
Brief Description of the Draw n~L
.
Above-mentioned and other features and objects of this invention will become more apparent by reference to the following description taken in conjunction with the accompanying drawing, in which:
Fig. 1 is a plan view of a brake-pad assembly in accordance with the principles of the present invention;
Fig. 2 is a sectional view of the brake-pad assembly of Fig. l; and Fig. 3 shows how friction pads are cut out of a plate o friction .
material in accordance with the principles of the present inventionO
; ~ .
-4- ;`
;
; '' ~`' ` .''.,.,,',' ',:',., ` '`''., ,', ' `'.';: ' ;,,; .''. i '" .
1C)4S~)SS
Description of the Preferred Embodimen-t Figs. 1 and 2 show a carrier plate 1 of a brake-pad assembly, having box-shaped recesses 2 and 2' into which friction pads 3 and 3' are inserted and secured therein by bonding. Friction pads 3 and 3' are shaped in the form of prisms having a parallelogram cross-sectional area. The two box-shaped recesses 2 and 2' are separated from one another by a cross member 4 thereby providing a space 5 between the friction pads 3 and 3' which simultaneously serves as a drain groove. It is also possible to arrange a pad-wear warning arrangement in space 5. The space 5 -~
defines an axis with respect to which the two ~iction pads 3 and 3' are in symmetry such that they approximately form a sector of a circle.
In Fig. 3, a portion of a plate 7 made from i'riction material is shown, -the thickness of which plate corresponds to the thickness 9 of the i'rlction pads 3 and 3' and from which friction pads 3 and 3' are cut out in their final forms by parallel parting lines 6 and 6' which run in longitudinal and transverse direction of plate 7. Parting lines 6 and 6,' run at angles , 8 unequal to 90 degrees so that the iriction pads 3 and 3' have the shape oi parallelograms.
W,hile we have described above the principles of our invention in con-nection with specific apparatus it is to be clearly understood that I:his description is made only by way oi example and not as a limitation to the scope of our invention as set forth in the objects thereof and in the accompanying claims.
ACH:vm/gs ~'~
,:
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. , ,, , , , , . : .: ., ; . . . . .
.
~)4t5~SS
a friction pad inserted in and secured to each of the recesses, each of the pads having the shape of a prism with a parallelogram cross-section and each of the pads being disposed symmetrically with respect to one another in the peripheral so that the pads approximate a sector of a circle.
It is also possible to arrange a rectangular friction pad between the two parallelogram-shaped friction pads.
The friction pads are advantageously manufactured separately irom the carrier or backing plate and are connected with the latter preferably by bonding. When using adhesive tape for bonding, this has the advan-tageous e*ect of noise attenuation during operatlon.
The division of the friction face oi a brake pad into a number of sectional faces, which is achieved by uslng several indivldual friction pads, considerably reduces the risk of tear due to thermal stresses, An economical and low-cost method of manufacture of such brake pads comprises a plate made from frictional material having a thickness --~
corresponding to that of the desired friction pads is manufactured in the ~`
known manner by pressing and age-hardening, and a plurality of friction pads are cut out of the plate having their iinal forms. Such plates have the advantage that various sizes of friction pads can be cut out and that they permit homogenous manufacture because the friction material need, not flow into anchoring holes or recesses of the carrier plate which causes cavitation in the structure and consequently leads to lack of homogeneity. Further, such plates permit an improved and more even through-hardening of the friction material~ ~`
An advantageous method of cutting the friction pads out of the plate includes cutting parallel parting lines over both the whole length and the '~.
....
whole width of the plate with the longitudinal and transverse parting lines running at angles unequal to 90 degrees.
In an embodiment of the brake-pad assembly constructed in accordance with this invention, the friction pads are arranged on the carrier plate in a spaced relationship to one another. This can be achieved by a cross member separating the two box-shaped recesses. The space between the two friction pads advantageously serves as a drain groove and can also be used or receiving a pad-wear warning arrangement.
In a further advantageous embodiment of the inventive brake-pad ;
assembly, the friction pads have a different resistance to wear. This avoids, on the one hand, that the friction pad on the entry side of the - disc and the friction pad on the exit side of the disc wear unevenly and, on the other hand, largely prevents disturbing noise during braking.
That portion of the friction pad which is inserted into the box-shaped recess of the carrier plate may consist of a material whlch has for example a coefficient of friction lower than that of the friction face and preferably has a high degree of hardness.
Brief Description of the Draw n~L
.
Above-mentioned and other features and objects of this invention will become more apparent by reference to the following description taken in conjunction with the accompanying drawing, in which:
Fig. 1 is a plan view of a brake-pad assembly in accordance with the principles of the present invention;
Fig. 2 is a sectional view of the brake-pad assembly of Fig. l; and Fig. 3 shows how friction pads are cut out of a plate o friction .
material in accordance with the principles of the present inventionO
; ~ .
-4- ;`
;
; '' ~`' ` .''.,.,,',' ',:',., ` '`''., ,', ' `'.';: ' ;,,; .''. i '" .
1C)4S~)SS
Description of the Preferred Embodimen-t Figs. 1 and 2 show a carrier plate 1 of a brake-pad assembly, having box-shaped recesses 2 and 2' into which friction pads 3 and 3' are inserted and secured therein by bonding. Friction pads 3 and 3' are shaped in the form of prisms having a parallelogram cross-sectional area. The two box-shaped recesses 2 and 2' are separated from one another by a cross member 4 thereby providing a space 5 between the friction pads 3 and 3' which simultaneously serves as a drain groove. It is also possible to arrange a pad-wear warning arrangement in space 5. The space 5 -~
defines an axis with respect to which the two ~iction pads 3 and 3' are in symmetry such that they approximately form a sector of a circle.
In Fig. 3, a portion of a plate 7 made from i'riction material is shown, -the thickness of which plate corresponds to the thickness 9 of the i'rlction pads 3 and 3' and from which friction pads 3 and 3' are cut out in their final forms by parallel parting lines 6 and 6' which run in longitudinal and transverse direction of plate 7. Parting lines 6 and 6,' run at angles , 8 unequal to 90 degrees so that the iriction pads 3 and 3' have the shape oi parallelograms.
W,hile we have described above the principles of our invention in con-nection with specific apparatus it is to be clearly understood that I:his description is made only by way oi example and not as a limitation to the scope of our invention as set forth in the objects thereof and in the accompanying claims.
ACH:vm/gs ~'~
,:
_5~
. , ,, , , , , . : .: ., ; . . . . .
Claims (2)
1. A method of manufacturing a brake-pad assembly for a spot-type disc brake having a carrier plate and a pair of friction pads comprising the steps of:
forming separately a pair of spaced recesses in said carrier plate, said recesses having a parallelogram configuration other than a rectangle and a cross member therebetween providing an axis of symmetry, said recesses being symmetrically disposed with respect to said axis of symmetry to approximate a sector of a circle;
pressing and age-hardening separately a plate of friction material having a thickness corresponding to the desired thickness of said pads;
cutting at least said pair of pads separately from said plate having the dimensions and shape of said recesses; and placing and securing each of said pair of pads produced in said cutting step in a different one of said recesses so that said pair of pads are disposed symmetrically with respect to said axis of symmetry to approximate a sector of a circle.
forming separately a pair of spaced recesses in said carrier plate, said recesses having a parallelogram configuration other than a rectangle and a cross member therebetween providing an axis of symmetry, said recesses being symmetrically disposed with respect to said axis of symmetry to approximate a sector of a circle;
pressing and age-hardening separately a plate of friction material having a thickness corresponding to the desired thickness of said pads;
cutting at least said pair of pads separately from said plate having the dimensions and shape of said recesses; and placing and securing each of said pair of pads produced in said cutting step in a different one of said recesses so that said pair of pads are disposed symmetrically with respect to said axis of symmetry to approximate a sector of a circle.
2. A method according to claim 1, wherein said step of cutting includes the steps of cutting longitudinal parallel parting lines over the whole length of said plate, and cutting transverse parallel parting lines over the whole width of said plate, each of said parallel parting lines intersecting each of said transverse parting lines at an angle other than 90°.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2423377A DE2423377A1 (en) | 1974-05-14 | 1974-05-14 | BRAKE SHOE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1045055A true CA1045055A (en) | 1978-12-26 |
Family
ID=5915517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA226,837A Expired CA1045055A (en) | 1974-05-14 | 1975-05-13 | Brake-pad assembly |
Country Status (11)
| Country | Link |
|---|---|
| AU (1) | AU8112575A (en) |
| BR (1) | BR7502858A (en) |
| CA (1) | CA1045055A (en) |
| DE (1) | DE2423377A1 (en) |
| DK (1) | DK135007C (en) |
| ES (1) | ES212320Y (en) |
| FR (1) | FR2271448B1 (en) |
| GB (1) | GB1477755A (en) |
| IT (1) | IT1038105B (en) |
| SE (1) | SE7505457L (en) |
| ZA (1) | ZA752758B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4110869C2 (en) * | 1991-04-04 | 1999-07-22 | Teves Gmbh Alfred | Fixed caliper partial brake disc brake |
| DE4133486C2 (en) * | 1991-04-04 | 2000-09-28 | Continental Teves Ag & Co Ohg | Fixed caliper partial brake disc brake |
| DE102013006684A1 (en) * | 2013-04-18 | 2014-04-03 | Audi Ag | Brake lining structure for disc brake system used in automotive industry, has friction lining that is provided with air-filled recess portion to face lining carrier plate which is provided with damping material |
| EP3450789B1 (en) | 2017-08-31 | 2021-05-26 | Meritor Heavy Vehicle Braking Systems (UK) Limited | A disc brake |
| EP3450792A1 (en) * | 2017-08-31 | 2019-03-06 | Meritor Heavy Vehicle Braking Systems (UK) Limited | A disc brake |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1957751U (en) * | 1967-01-11 | 1967-03-30 | Bergische Stahlindustrie | BRAKE SHOE WITH FRICTION PAD. |
-
1974
- 1974-05-14 DE DE2423377A patent/DE2423377A1/en not_active Ceased
-
1975
- 1975-04-29 ZA ZA00752758A patent/ZA752758B/en unknown
- 1975-05-06 GB GB1892775A patent/GB1477755A/en not_active Expired
- 1975-05-09 BR BR2858/75A patent/BR7502858A/en unknown
- 1975-05-13 ES ES1975212320U patent/ES212320Y/en not_active Expired
- 1975-05-13 FR FR7514783A patent/FR2271448B1/fr not_active Expired
- 1975-05-13 CA CA226,837A patent/CA1045055A/en not_active Expired
- 1975-05-13 DK DK208875A patent/DK135007C/en active
- 1975-05-13 IT IT23250/75A patent/IT1038105B/en active
- 1975-05-13 SE SE7505457A patent/SE7505457L/en unknown
- 1975-05-14 AU AU81125/75A patent/AU8112575A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES212320Y (en) | 1976-11-01 |
| SE7505457L (en) | 1975-11-17 |
| ES212320U (en) | 1976-06-01 |
| BR7502858A (en) | 1976-11-30 |
| DE2423377A1 (en) | 1975-11-27 |
| DK208875A (en) | 1975-11-15 |
| FR2271448B1 (en) | 1979-03-30 |
| DK135007C (en) | 1977-07-11 |
| DK135007B (en) | 1977-02-21 |
| ZA752758B (en) | 1976-04-28 |
| AU8112575A (en) | 1976-11-18 |
| IT1038105B (en) | 1979-11-20 |
| FR2271448A1 (en) | 1975-12-12 |
| GB1477755A (en) | 1977-06-29 |
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