US20010017246A1 - Combined disk and drum brake - Google Patents
Combined disk and drum brake Download PDFInfo
- Publication number
- US20010017246A1 US20010017246A1 US09/746,075 US74607500A US2001017246A1 US 20010017246 A1 US20010017246 A1 US 20010017246A1 US 74607500 A US74607500 A US 74607500A US 2001017246 A1 US2001017246 A1 US 2001017246A1
- Authority
- US
- United States
- Prior art keywords
- brake
- water
- friction ring
- drum
- annular channel
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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
-
- 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
- F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
- F16D63/004—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00 comprising a rotor engaged both axially and radially by braking members, e.g. combined drum and 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
- F16D65/12—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
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D2051/001—Parts or details of drum brakes
- F16D2051/005—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
- 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.
- German Patent Document DE 38 24 917 A1 discloses a brake drum with a brake ring, provided with a peripheral recess, into which a steel plate projects so that splashwater ingress into the drum is prevented and splashwater egress is improved.
- U.S. Pat. No. 4,313,528 discloses an internally ventilated disk brake with an Inside shoe brake, which exhibits on an inside friction ring an annular groove, whose base exhibits passage openings to the air guide channels between the friction rings of the brake disk, in order to protect against water entering into the inside shoe brake.
- a peripheral collar is laid down by a shielding plate and bent in the direction of the annular groove.
- An object of the invention is, in the case of an internally ventilated brake disk with an inside shoe brake, to avoid splashwater, water or the like from penetrating onto the running surfaces of the inside shoe brake and to make it possible to specifically lead in and out the water both inside and outside the brake disk with simple means.
- the inside friction ring exhibits an annular channel which has a contracted groove opening opposite a base of the channel
- air guide channels of the brake disk form water drainage channels, which are separated relative to a water draining interspace, defined by the shielding plate and a friction ring surface, and
- the water guide plate projects into the annular channel and is arranged in such a manner at an angle to the annular channel that in an approximately vertical water ingress position the guide plate is at an acute angle relative to the channel base and at the same time in an approximately vertical water egress position the guide plate forms a runoff slope.
- the invention provides that the water drains toward the outside over two separate channels or through the air guide channels of the internally ventilated brake disk and over an interspace, formed by a shielding plate to the brake disk.
- the air guide channels run between the two friction rings of the internally ventilated brake disk approximately parallel to the friction ring walls, where an upper orifice opening of the air guide channels or the water drainage channels lies in the faces of the friction rings, and the bottom orifice opening of the air guide channels is arranged at a 90° angle relative to the drum wall in the region or in the direction of the brake drum and extends from here in the shape of an arc to the other straight air guide channel between the friction rings.
- FIG. 1 is a cross section of an upper half of a brake disk with one upper orifice opening of an air channel and a shielding plate, whose side defines an interspace, and in a water ingress position;
- FIG. 2 is a cross section of a bottom half of a brake disk with a bottom orifice opening of the air channels or water drainage channels in a water egress position.
- An internally ventilated brake disk 1 comprises in essence two friction rings 2 , 3 , which are connected to a brake drum 4 .
- Said brake drum houses an inside shoe brake 5 .
- the two friction rings 2 , 3 exhibit radial cross ribs 6 over the periphery; said ribs form the air guide channels 7 between the friction rings 2 , 3 .
- the one inside friction ring 3 of the brake disk 1 is provided with an annular channel 11 , designed as a groove 8 , which is arranged coaxially to the brake drum 4 .
- the side wall of this channel 11 form a chute 8 a , the so called water drainage chute.
- This annular channel 11 exhibits an arched base 9 , which extends from a friction ring surface 3 a to the chute 8 a , which exhibits a bordering rim 8 b relative to the interspace or gap Z.
- the chute 8 a is provided on the periphery and exhibits a base at right angles to the friction rings 2 , 3 .
- the water which has collected in the chute 8 a , in position II (FIG. 2) can drain quickly through the arched base 9 of the annular channel 11 .
- the brake disk 1 is protected by a shielding plate 16 , which is arranged at a distance from the inside friction ring 3 .
- the shielding plate 16 has a water guide plate 13 , a so called collar, which projects into the annular channel 11 .
- the water guide plate 13 slopes at an angle, as is quite evident from FIGS. 1 and 2, and extends up to the vicinity of the base 9 of the annular channel 11 .
- the air guide channels 7 are separated from the annular channel 11 . That is, the outlet or inlet openings, like the orifice opening 7 a or 7 b and 7 b or 7 a of the air guide channels 7 , are separate from the orifice slits 16 a and 16 b.
- FIG. 1 depicts a water ingress position I. That is, the water enters, for example, in a vertical position of the brake disk 1 . However, water or water droplets and the like can get into the air guide channels 7 in other positions. The water flows in the direction of the arrow 17 through the air guide channels 7 and from here in the direction of arrow 18 or 20 through the orifice openings 7 a or 7 b to the outside.
- the air guide channels 7 are curved in the region of the orifice opening 7 a and run in a straight line relative to the orifice 7 b between the friction rings 2 , 3 and parallel to the same.
- the result of the deposited water guide plate 13 is a labyrinth-like shielding relative to the inside shoe brake 5 and, moreover, a water guide to the outside that takes place separately from the air guide channel 7 .
- the annular channel 11 can exhibit a cross section, which can be designed, for example, so as to be triangular, U shaped, and semicircular so that the incoming water can be drained without any impediment to the outside in a very short period of time.
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 Application No. 199 63 031.3, 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.
- The German Patent Document DE 38 24 917 A1 discloses a brake drum with a brake ring, provided with a peripheral recess, into which a steel plate projects so that splashwater ingress into the drum is prevented and splashwater egress is improved. Furthermore, U.S. Pat. No. 4,313,528 discloses an internally ventilated disk brake with an Inside shoe brake, which exhibits on an inside friction ring an annular groove, whose base exhibits passage openings to the air guide channels between the friction rings of the brake disk, in order to protect against water entering into the inside shoe brake. To drain the water, a peripheral collar is laid down by a shielding plate and bent in the direction of the annular groove.
- An object of the invention is, in the case of an internally ventilated brake disk with an inside shoe brake, to avoid splashwater, water or the like from penetrating onto the running surfaces of the inside shoe brake and to make it possible to specifically lead in and out the water both inside and outside the brake disk with simple means.
- This object is achieved according to preferred embodiments of the invention by providing a combined disk and drum brake with an internally ventilated brake disk, comprising:
- an inside and an outside friction ring,
- a peripheral water guide plate at a shielding plate, and
- an inside shoe brake arranged in a brake drum,
- wherein the inside friction ring exhibits an annular channel which has a contracted groove opening opposite a base of the channel,
- wherein air guide channels of the brake disk form water drainage channels, which are separated relative to a water draining interspace, defined by the shielding plate and a friction ring surface, and
- wherein the water guide plate projects into the annular channel and is arranged in such a manner at an angle to the annular channel that in an approximately vertical water ingress position the guide plate is at an acute angle relative to the channel base and at the same time in an approximately vertical water egress position the guide plate forms a runoff slope.
- In contrast to the separate water accommodation and common water drainage of water—splashwater and the like—, penetrating into the brake disk, over air guide channels in an internally ventilated brake disk as the water drainage channels, the invention provides that the water drains toward the outside over two separate channels or through the air guide channels of the internally ventilated brake disk and over an interspace, formed by a shielding plate to the brake disk. Thus, the result in the case of the accumulation of large quantities of splashwater or liquids is better and faster drainage of water to the outside over the two separate channels or the interspace without loading the inside shoe brake with splashwater.
- The air guide channels run between the two friction rings of the internally ventilated brake disk approximately parallel to the friction ring walls, where an upper orifice opening of the air guide channels or the water drainage channels lies in the faces of the friction rings, and the bottom orifice opening of the air guide channels is arranged at a 90° angle relative to the drum wall in the region or in the direction of the brake drum and extends from here in the shape of an arc to the other straight air guide channel between the friction rings.
- Due to these orifice openings, which belong to the air guide channels and are arranged separately from the orifice slit of the shielding plate, splashwater or liquid can drain immediately by circumventing the annular channel.
- 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 section of an upper half of a brake disk with one upper orifice opening of an air channel and a shielding plate, whose side defines an interspace, and in a water ingress position; and
- FIG. 2 is a cross section of a bottom half of a brake disk with a bottom orifice opening of the air channels or water drainage channels in a water egress position.
- An internally ventilated
brake disk 1 comprises in essence twofriction rings brake drum 4. Said brake drum houses an insideshoe brake 5. The twofriction rings radial cross ribs 6 over the periphery; said ribs form theair guide channels 7 between thefriction rings - The one inside
friction ring 3 of thebrake disk 1 is provided with anannular channel 11, designed as agroove 8, which is arranged coaxially to thebrake drum 4. The side wall of thischannel 11 form a chute 8 a, the so called water drainage chute. Thisannular channel 11 exhibits anarched base 9, which extends from a friction ring surface 3 a to the chute 8 a, which exhibits a borderingrim 8 b relative to the interspace or gap Z. The chute 8 a is provided on the periphery and exhibits a base at right angles to thefriction rings - The water, which has collected in the chute8 a, in position II (FIG. 2) can drain quickly through the
arched base 9 of theannular channel 11. Thebrake disk 1 is protected by ashielding plate 16, which is arranged at a distance from theinside friction ring 3. Theshielding plate 16 has awater guide plate 13, a so called collar, which projects into theannular channel 11. - The
water guide plate 13 slopes at an angle, as is quite evident from FIGS. 1 and 2, and extends up to the vicinity of thebase 9 of theannular channel 11. Theair guide channels 7 are separated from theannular channel 11. That is, the outlet or inlet openings, like the orifice opening 7 a or 7 b and 7 b or 7 a of theair guide channels 7, are separate from theorifice slits - FIG. 1 depicts a water ingress position I. That is, the water enters, for example, in a vertical position of the
brake disk 1. However, water or water droplets and the like can get into theair guide channels 7 in other positions. The water flows in the direction of thearrow 17 through theair guide channels 7 and from here in the direction ofarrow orifice openings 7 a or 7 b to the outside. Theair guide channels 7 are curved in the region of the orifice opening 7 a and run in a straight line relative to theorifice 7 b between thefriction rings - The region Z between the
shielding plate 16 and theinside friction ring 3, incoming water or water droplets flow in the direction of thearrow 21 into theannular channel 11 and into the chute 8 a and then in the direction of thearrow 22, 22 a directly to the outside. - Thus, the result of the deposited
water guide plate 13 is a labyrinth-like shielding relative to theinside shoe brake 5 and, moreover, a water guide to the outside that takes place separately from theair guide channel 7. Theannular channel 11 can exhibit a cross section, which can be designed, for example, so as to be triangular, U shaped, and semicircular so that the incoming water can be drained without any impediment to the outside in a very short period of time. - 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 (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19963031.3 | 1999-12-24 | ||
DE19963031A DE19963031C5 (en) | 1999-12-24 | 1999-12-24 | Combined disc and drum brake |
DE19963031 | 1999-12-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20010017246A1 true US20010017246A1 (en) | 2001-08-30 |
US6371260B2 US6371260B2 (en) | 2002-04-16 |
Family
ID=7934518
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/746,075 Expired - Fee Related US6371260B2 (en) | 1999-12-24 | 2000-12-26 | Combined disk and drum brake |
Country Status (4)
Country | Link |
---|---|
US (1) | US6371260B2 (en) |
EP (1) | EP1111264A1 (en) |
JP (1) | JP2001187932A (en) |
DE (1) | DE19963031C5 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003106350A (en) * | 2001-09-28 | 2003-04-09 | Hosei Brake Ind Ltd | Parking brake for vehicle |
KR20100035258A (en) * | 2008-09-26 | 2010-04-05 | 주식회사 데크 | Dih structure brake disk with drum for parking brake and disk roter for disc brake formed integrally |
DE102010024417A1 (en) * | 2010-06-19 | 2011-12-22 | Volkswagen Ag | brake cover |
US11274717B2 (en) | 2010-07-02 | 2022-03-15 | Shimano Inc. | Brake rotor assembly |
JP2015010681A (en) * | 2013-07-01 | 2015-01-19 | 株式会社ジェイテクト | Bearing unit |
US10480601B2 (en) | 2016-06-22 | 2019-11-19 | Sram, Llc | Heat dissipating brake rotor |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1887478A (en) * | 1931-04-08 | 1932-11-08 | Lempco Products Inc | Brake drum and shield assembly |
US3827534A (en) * | 1973-07-25 | 1974-08-06 | Gen Motors Corp | Disc brake parking brake |
US4005768A (en) * | 1975-11-28 | 1977-02-01 | Ford Motor Company | Dust shield for disc brake |
JPS55124639U (en) * | 1979-02-27 | 1980-09-04 | ||
US4230208A (en) * | 1979-07-05 | 1980-10-28 | Gale John T | Moisture removal assembly |
DE3824917A1 (en) * | 1988-07-22 | 1990-01-25 | Teves Gmbh Alfred | Brake drum |
ES2057418T3 (en) * | 1989-08-29 | 1994-10-16 | Kelsey Hayes Co | BRAKE SET. |
DE4212356C2 (en) * | 1991-04-15 | 1995-04-27 | Akebono Brake Ind | Carrier plate for a drum brake |
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 |
JPH08296671A (en) * | 1995-04-27 | 1996-11-12 | Suzuki Motor Corp | Labyrinth structure of drum brake for automobile |
JPH08296672A (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 |
DE19908914C1 (en) * | 1999-12-24 | 2001-02-15 | Porsche Ag | 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 |
-
1999
- 1999-12-24 DE DE19963031A patent/DE19963031C5/en not_active Expired - Fee Related
-
2000
- 2000-10-06 EP EP00121811A patent/EP1111264A1/en not_active Withdrawn
- 2000-11-27 JP JP2000359655A patent/JP2001187932A/en not_active Withdrawn
- 2000-12-26 US US09/746,075 patent/US6371260B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US6371260B2 (en) | 2002-04-16 |
JP2001187932A (en) | 2001-07-10 |
DE19963031C5 (en) | 2005-03-03 |
DE19963031C1 (en) | 2001-05-23 |
EP1111264A1 (en) | 2001-06-27 |
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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:011691/0942 Effective date: 20010109 |
|
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 |
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FPAY | Fee payment |
Year of fee payment: 8 |
|
AS | Assignment |
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 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 |
|
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: 20140416 |