US20010025748A1 - Combined disk and drum brake with an internally ventilated brake disk - Google Patents
Combined disk and drum brake with an internally ventilated brake disk Download PDFInfo
- Publication number
- US20010025748A1 US20010025748A1 US09/745,424 US74542400A US2001025748A1 US 20010025748 A1 US20010025748 A1 US 20010025748A1 US 74542400 A US74542400 A US 74542400A US 2001025748 A1 US2001025748 A1 US 2001025748A1
- Authority
- US
- United States
- Prior art keywords
- water
- ring
- ring groove
- brake
- disk
- 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
Links
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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
- 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
- F16D65/10—Drums for externally- or internally-engaging 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
- 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
- F16D2055/0037—Protective covers
-
- 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
- F16D2065/1328—Structure internal cavities, e.g. cooling channels
Definitions
- the invention relates to a combined disk and drum brake with an internally ventilated brake disk of the type referred to in German Patent Application No. 199 08 914.0.
- German Patent Document DE 38 24917 A1 discloses a brake with a protruding sheet metal plate for guiding splashing water away from the brake drum.
- a combined disk and drum brake with an internally ventilated brake disk is described with respect to the construction referred to above.
- the brake disk has a ring duct with two opposed ring grooves.
- An inclined water guiding metal plate of an exterior shield projects into the ring duct and, on the one hand, collects the splashing water in a water inlet position and releases the collected splashing water in a water outlet position.
- this object is achieved by providing a combined disk and drum brake with an internally ventilated brake disk, having two friction rings, having a surrounding water guiding metal plate bent away from a shielding metal plate, and having an inside shoe brake arranged in a brake drum, in the interior friction ring, a ring groove being provided which, in its base, has passage openings to air guiding ducts between the friction rings, and a narrowed groove opening being provided which is situated opposite the base, which narrowed groove opening is adjoined by opposed ring surfaces within the ring groove, and the bent-away water guiding metal plate projecting into the ring groove and between the ring surfaces, and being set at an angle with respect to the ring surface such that, in an approximately vertical water entry position, the guiding plate is set at an acute angle with respect to the ring groove base and simultaneously forms a draining slope in an approximately vertical water outlet position of the guiding metal plate, wherein the ring surfaces in each case laterally bound the ring groove and form a water draining and
- the ring groove in a friction ring of the brake disk with one water draining surface and one water collecting surface respectively can be produced in a simple manner.
- the indentation in the lateral surface is situated below the level of the adjoining duct wall of the air guiding duct and is arranged to be inclined with respect to this duct wall and has a rounded end area.
- FIG. 1 is a cross-sectional view of a brake disk according to Patent Application 199 08 914.0 with a ring groove having two ring ducts, in a water inlet position;
- FIG. 2 is an enlarged representation of a ring groove according to the invention in a water inlet position
- FIG. 3 is an enlarged representation of the ring groove according to the invention in a water outlet position.
- An internally ventilated brake disk 1 according to FIGS. 1 to 3 comprises essentially two friction rings 2 , 3 which are connected with a brake drum 4 .
- An inside shoe brake 5 is arranged in this brake drum 4 .
- These two friction rings 2 , 3 have radial cross ribs 6 along the circumference which form air guiding ducts 7 between the friction rings 2 , 3 .
- the one friction ring 3 of the brake disk 1 which is situated in the interior, is provided with a ring groove 8 which is arranged coaxially with respect to the brake drum.
- This ring groove 8 is provided at the lower end of the air guiding ducts 7 and is continuously connected with respect to these by way of openings 10 provided in the base 9 .
- the brake disk 1 is protected by means of a shielding metal plate 16 arranged at a distance from the interior friction ring 3 .
- a water guiding metal plate 13 , a so-called collar, which projects into the ring groove 8 is provided on this shielding metal plate 16 .
- the ring groove 8 has a bounding water draining surface 30 and a so-called water collecting surface 31 on the opposite side. These two surfaces 30 , 31 are situated to be inclined with respect to the exterior groove opening 32 . As illustrated in greater detail in FIGS. 2 and 3, surface 30 is at an angle ⁇ , and the other surface 31 is at an angle ⁇ .
- the water draining surface 30 is slightly curved to the outside toward the groove opening 32 , but may also be constructed as a plane surface.
- the water collecting surface 31 is provided with an indentation 34 to the duct wall 33 of the air guiding duct 7 and is situated below the plane Y-Y of the wall 33 in a diagonal plane X-X.
- FIG. 2 illustrates a water entry position of the ring groove 8 according to the invention; that is, the water entry takes place approximately in the vertical position of the brake disk 1 , in which case water or water drops can also enter into the air guiding ducts 7 in additional positions.
- the water flows in the direction of the arrow 17 through the openings 10 into the ring groove 8 and from there in the direction of the arrow 18 (FIG. 3) through the opening 10 into the air guiding ducts 7 and farther into the direction of the arrow 20 to the outside.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Description
- This application claims the priority of German Patent Document 199 63 030.5, filed in Germany, Dec. 24, 1999, the disclosure of which is expressly incorporated by reference herein.
- The invention relates to a combined disk and drum brake with an internally ventilated brake disk of the type referred to in German Patent Application No. 199 08 914.0.
- German Patent Document DE 38 24917 A1 discloses a brake with a protruding sheet metal plate for guiding splashing water away from the brake drum.
- A combined disk and drum brake with an internally ventilated brake disk is described with respect to the construction referred to above. For avoiding a penetration of water onto the contact surface of the inside shoe brake in a friction ring of the brake disk, the brake disk has a ring duct with two opposed ring grooves. An inclined water guiding metal plate of an exterior shield projects into the ring duct and, on the one hand, collects the splashing water in a water inlet position and releases the collected splashing water in a water outlet position.
- It is an object of the invention to absolutely avoid, in the case of an internally ventilated brake disk with an inside shoe brake arranged in the brake drum, a penetration of splashing water onto the contact surface of the inside shoe brake and to provide a targeted water drainage by means of a ring groove which is easy to produce and which forms a surrounding duct in the brake disk.
- According to the invention, this object is achieved by providing a combined disk and drum brake with an internally ventilated brake disk, having two friction rings, having a surrounding water guiding metal plate bent away from a shielding metal plate, and having an inside shoe brake arranged in a brake drum, in the interior friction ring, a ring groove being provided which, in its base, has passage openings to air guiding ducts between the friction rings, and a narrowed groove opening being provided which is situated opposite the base, which narrowed groove opening is adjoined by opposed ring surfaces within the ring groove, and the bent-away water guiding metal plate projecting into the ring groove and between the ring surfaces, and being set at an angle with respect to the ring surface such that, in an approximately vertical water entry position, the guiding plate is set at an acute angle with respect to the ring groove base and simultaneously forms a draining slope in an approximately vertical water outlet position of the guiding metal plate, wherein the ring surfaces in each case laterally bound the ring groove and form a water draining and a water collecting surface which are both arranged to be inclined with respect to the shielding metal plate at an angle (α, β) and to be jointly narrowing the exterior ring groove opening.
- Principal advantages achieved by the invention are that the ring groove in a friction ring of the brake disk with one water draining surface and one water collecting surface respectively can be produced in a simple manner. These surfaces, which bound the ring groove laterally or on the top and on the bottom, have different flat constructions and are arranged to diagonally extend toward the exterior groove opening such that a narrowed exterior groove opening is obtained.
- So that the splashing water or water entering the brake disk can, without distinct ring ducts, be nevertheless collected in the lateral walls of the ring groove and be rapidly discharged to the outside, one upper lateral surface of the ring groove—viewed in the water entry position—is slightly curved and the lower opposite lateral surface is provided with an indentation with respect to the adjoining duct wall of the air guiding duct.
- On the whole, the indentation in the lateral surface is situated below the level of the adjoining duct wall of the air guiding duct and is arranged to be inclined with respect to this duct wall and has a rounded end area.
- Other objects, advantages and novel features of the present invention will become apparent from the following detailed description of the invention when considered in conjunction with the accompanying drawings.
- FIG. 1 is a cross-sectional view of a brake disk according to Patent Application 199 08 914.0 with a ring groove having two ring ducts, in a water inlet position;
- FIG. 2 is an enlarged representation of a ring groove according to the invention in a water inlet position; and
- FIG. 3 is an enlarged representation of the ring groove according to the invention in a water outlet position.
- An internally ventilated brake disk1 according to FIGS. 1 to 3 comprises essentially two
friction rings brake drum 4. Aninside shoe brake 5 is arranged in thisbrake drum 4. These twofriction rings radial cross ribs 6 along the circumference which formair guiding ducts 7 between thefriction rings - The one
friction ring 3 of the brake disk 1, which is situated in the interior, is provided with aring groove 8 which is arranged coaxially with respect to the brake drum. Thisring groove 8 is provided at the lower end of theair guiding ducts 7 and is continuously connected with respect to these by way ofopenings 10 provided in thebase 9. - The brake disk1 is protected by means of a
shielding metal plate 16 arranged at a distance from theinterior friction ring 3. A water guidingmetal plate 13, a so-called collar, which projects into thering groove 8 is provided on thisshielding metal plate 16. - Laterally, the
ring groove 8 has a boundingwater draining surface 30 and a so-calledwater collecting surface 31 on the opposite side. These twosurfaces surface 30 is at an angle α, and theother surface 31 is at an angle β. - The
water draining surface 30 is slightly curved to the outside toward the groove opening 32, but may also be constructed as a plane surface. - The
water collecting surface 31 is provided with anindentation 34 to theduct wall 33 of theair guiding duct 7 and is situated below the plane Y-Y of thewall 33 in a diagonal plane X-X. As a result of the inclined position at the angle β (FIG. 2), a water discharge toward the outside in position I is prevented in water entry position I. - The water guiding
metal plate 13 is inclined at an angle and extends to close to thebase 9 or to theopenings 10 between thecross ribs 6 of the brake disk 1. FIG. 2 illustrates a water entry position of thering groove 8 according to the invention; that is, the water entry takes place approximately in the vertical position of the brake disk 1, in which case water or water drops can also enter into theair guiding ducts 7 in additional positions. The water flows in the direction of thearrow 17 through theopenings 10 into thering groove 8 and from there in the direction of the arrow 18 (FIG. 3) through the opening 10 into theair guiding ducts 7 and farther into the direction of thearrow 20 to the outside. - Water and water drops entering the area Z between the
shielding metal plate 16 and theinterior friction ring 3 flow into thering groove 8 in the direction of thearrow 21 and directly in the direction of thearrow 18 through theopenings 10 into theair guiding ducts 7 and through the space Z to the outside. - The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.
Claims (5)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19908914A DE19908914C1 (en) | 1999-12-24 | 1999-03-02 | Combined disc and drum brake has internally ventilated brake disc with friction rings connected by ring channels; water guide plate protrudes into annular groove and between channels |
DE19963030A DE19963030C2 (en) | 1999-03-02 | 1999-12-24 | Combined disc and drum brake with an internally ventilated brake disc |
DE19963030.5 | 1999-12-24 | ||
DE19963030 | 1999-12-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20010025748A1 true US20010025748A1 (en) | 2001-10-04 |
US6364071B2 US6364071B2 (en) | 2002-04-02 |
Family
ID=26052131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/745,424 Expired - Fee Related US6364071B2 (en) | 1999-03-02 | 2000-12-26 | Combined disk and drum brake with an internally ventilated brake disk |
Country Status (2)
Country | Link |
---|---|
US (1) | US6364071B2 (en) |
DE (1) | DE19963030C2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10102761A1 (en) * | 2001-01-23 | 2002-07-25 | Volkswagen Ag | Motor vehicle brake system has cover plate with projecting interrupted wall strip with projection to prevent snow from clinging to cover plate |
US6698557B2 (en) * | 2001-09-10 | 2004-03-02 | Arvinmeritor Technology, Llc | Brake drum cooling apparatus |
DE10333915B4 (en) * | 2003-07-25 | 2007-04-12 | Audi Ag | Internally ventilated brake disc for a disc brake |
EP1941172A1 (en) * | 2005-10-28 | 2008-07-09 | Brembo Ceramic Brake Systems S.p.A | Parking brake |
DE102011089908B4 (en) | 2011-12-27 | 2021-11-11 | Robert Bosch Gmbh | Brake disc |
US9422993B2 (en) * | 2014-07-28 | 2016-08-23 | Shimano Inc. | Rotor cover, rotor cooling apparatus, and temperature-level indicator |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55124639U (en) * | 1979-02-27 | 1980-09-04 | ||
US4596312A (en) * | 1981-01-24 | 1986-06-24 | Honda Giken Kogyo Kabushiki Kaisha | Disc brake system |
JPS57192636A (en) | 1981-05-23 | 1982-11-26 | Hosei Brake Kogyo Kk | Brake drum for parking brake |
DE3824917A1 (en) * | 1988-07-22 | 1990-01-25 | Teves Gmbh Alfred | Brake drum |
EP0416760B1 (en) | 1989-08-29 | 1994-06-01 | Kelsey-Hayes Company | Brake assembly |
JPH06249273A (en) | 1993-02-24 | 1994-09-06 | Aisin Takaoka Ltd | Drum-in-disc and brake device |
US5529149A (en) * | 1994-11-21 | 1996-06-25 | Alliedsignal Inc. | Drum-in-hat brake with reverse scissors actuator |
JPH08296672A (en) | 1995-04-27 | 1996-11-12 | Suzuki Motor Corp | Labyrinth structure of drum brake for automobile |
JPH08296671A (en) | 1995-04-27 | 1996-11-12 | Suzuki Motor Corp | Labyrinth structure of drum brake for automobile |
DE19751915A1 (en) * | 1997-11-22 | 1999-05-27 | Itt Mfg Enterprises Inc | Brake for motorized vehicle wheels, with brake drum and mud guard |
-
1999
- 1999-12-24 DE DE19963030A patent/DE19963030C2/en not_active Expired - Fee Related
-
2000
- 2000-12-26 US US09/745,424 patent/US6364071B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19963030C2 (en) | 2002-01-24 |
US6364071B2 (en) | 2002-04-02 |
DE19963030A1 (en) | 2001-07-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DR. ING. H.C.F. PORSCHE AG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AYDT, GUENTER;REEL/FRAME:011418/0509 Effective date: 20001220 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
AS | Assignment |
Owner name: DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT (COMPAN Free format text: MERGER;ASSIGNOR:DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT (COMPANY NUMBER 5211);REEL/FRAME:021040/0147 Effective date: 20071113 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
AS | Assignment |
Owner name: DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT, GERMAN Free format text: CHANGE OF NAME;ASSIGNOR:PORSCHE ZWISCHENHOLDING GMBH;REEL/FRAME:025227/0747 Effective date: 20091130 Owner name: PORSCHE ZWISCHENHOLDING GMBH, GERMANY Free format text: MERGER;ASSIGNOR:DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT;REEL/FRAME:025227/0699 Effective date: 20091125 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Expired due to failure to pay maintenance fee |
Effective date: 20140402 |