WO1996038329A1 - Unterdruckbremskraftverstärker - Google Patents
Unterdruckbremskraftverstärker Download PDFInfo
- Publication number
- WO1996038329A1 WO1996038329A1 PCT/EP1996/002322 EP9602322W WO9638329A1 WO 1996038329 A1 WO1996038329 A1 WO 1996038329A1 EP 9602322 W EP9602322 W EP 9602322W WO 9638329 A1 WO9638329 A1 WO 9638329A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vacuum brake
- cover part
- main part
- brake booster
- control housing
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/72—Electrical control in fluid-pressure brake systems in vacuum systems or vacuum booster units
Definitions
- the invention relates to a vacuum brake booster according to the preamble of patent claim 1.
- Such a vacuum brake booster is known from DE 43 24 688 AI.
- the object of the invention is to improve a vacuum brake force booster, in particular with regard to a simple structure and inexpensive production.
- centering segments themselves are molded into it when the cover part is manufactured, also without causing additional costs.
- four centering segments are provided which engage the main part radially from the inside and widen the main part during assembly. Since, in operation, it is also important for the cover part to be positioned in the circumferential direction with respect to the electromagnet, additional axial projections with slip chamfers on the cover part are provided in a development of the invention, which cooperate with a radial projection of the main part and during assembly determine the mutual angular position of the cover part and the main part.
- the cover part has, in its radially outer edge region, a cutout for the passage of electrical cables, which is laterally delimited by two radially projecting arms.
- the cover part according to the invention can be further improved by providing spacers extending from the arms, which protrude axially outwards into the area of a device spring. In this way it is prevented that the electrical cables leading to the outside from the electromagnet become jammed between the guide tube of the control housing and the device spring or its spring guide actuator during operation. It is also for the cable under extremely unfavorable conditions, such as. B. Expansion of the device spring, transverse forces from the spring deformation or in the case of eccentricities, a sufficient passage is kept clear.
- a cable holder for fixing the cables is arranged in the control housing in the radial region between the cover part and the guide tube in the region of the passage through the cover part.
- the cables are guided in a defined position and wear of the cables by rubbing on housing parts, such as the device spring, is prevented.
- strain relief of the cables at the connection points to the electromagnet or absorption of bending and torsional moments to relieve a cable harness of the electromagnet or a release switch can be achieved by a corresponding design of the cable holder.
- the cable holder according to the invention can be made in one piece or preferably in two parts from sheet metal or plastic. In the two-part embodiment, the cables can be clamped between the two parts. In an embodiment made of plastic, the cables can also be encapsulated with a plastic sheath. Such embodiments are particularly advantageous in terms of simple assembly and low manufacturing costs.
- a further development of the invention provides that a second cable holder is arranged outside the control housing at the end of a cable harness. In this way, the cables are relieved of strain relative to the cable harness.
- FIG. 1 is a partial sectional view of a vacuum brake booster according to the invention
- FIG. 2 shows a view of the control housing with the cover part, partially cut along line B - B from FIG. 1, FIG.
- FIG. 3 is a view of the control housing with the cover part from direction A of Fig.l,
- Fig. 4 is a partial sectional view corresponding approximately to Fig. 1 of a further embodiment of the invention.
- the booster housing 1 of the vacuum brake booster shown according to the invention is divided by an axially movable wall 2 into a working chamber 3 and a vacuum chamber 4.
- This axially movable wall consists of one made of sheet metal, deep-drawn membrane plate 5 and a flexible membrane 6 lying thereon, which, not shown in detail, forms a rolling membrane as a seal between the outer circumference of membrane plate 5 and amplifier housing 1.
- the control housing 9 is guided axially displaceably and sealed in the amplifier housing 1.
- the movable wall 2 is fastened to the control housing 9.
- the braking force is transmitted via the control housing 9 to a push rod 10 which actuates the actuating piston of a master cylinder (not shown) of a braking system.
- an electromagnet 11 is provided with which the control valve 8 can be actuated.
- the control valve 8 When the control valve 8 is actuated with the electromagnet 11, the working chamber 3 is pressurized with atmospheric pressure, so that the wall 2 is pressed in the direction of the vacuum chamber 4 and the actuating force acting on the main cylinder via the push rod 10 as part of an emergency braking up to maximum possible value is amplified.
- a release switch 12 is used, which causes the electromagnet 11 to be released as soon as the actuation force is withdrawn onto the actuation rod 7.
- the control housing 9 consists of a main part 13 and a cover part 14, which are arranged and connected in a guide tube 15.
- the cover part 14 is axially attached to the main part 13.
- the electromagnet 11 is mounted on one axial side 16 in the main part 13 and on the other axial side 17 in the cover part 14.
- the cover part 14 is provided with axially projecting centering segments 18, 19, 20, 21 which, when the control housing 9 is assembled, the main part 13 ela deform the table and center it without play.
- the main part 13 of the four centering segments 18, 19, 20, 21 arranged approximately uniformly in the circumferential direction is widened somewhat in its edge region, since the centering segments 18, 19, 20, 21 are matched to the inside diameter of the main part 13 in such a way that they are radial push from the inside out.
- the cover part 14 is provided with two additional axial projections 22, 23, each of which has a slip chamfer 24, 25.
- the cover part 14 is pushed axially onto the main part 13, a radial projection 26 of the main part 13 interacting with the slip bevels 24, 25 of the projections 22, 23 and rotating the two parts 13, 14 against one another until the through Projections 22,23,26 predetermined mutual angular position is taken.
- the cover part has in its radially outer edge region a recess 27 which is intended for the passage of electrical cables 28 which, starting from the electromagnet 11, lead out of the control housing 9 in the direction parallel to the axis.
- the cover part 13 is provided with two arms 29, 30 which laterally limit the recess 27 and protrude radially up to the guide tube 15.
- Spacers 31, 32 formed in one piece extend from the arms 29, 30 and project axially outward into the area of a device spring 33.
- a cable holder 34 for fixing the cables 28 is arranged radially between the cover part 14 and the guide tube 15 and axially in the region of the cover part 14.
- the cable holder 34 is made of plastic and is composed of two parts 35, 36, between which the cables 28 are clamped.
- a second cable holder 37 is arranged outside the control housing 9 at the end of a cable harness 38.
- a cable holder is formed in that the cables 28 are extrusion-coated with a plastic sheath.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59602641T DE59602641D1 (de) | 1995-05-30 | 1996-05-30 | Unterdruckbremskraftverstärker |
EP96917466A EP0828642B1 (de) | 1995-05-30 | 1996-05-30 | Unterdruckbremskraftverstärker |
US08/952,571 US6053090A (en) | 1995-05-30 | 1996-05-30 | Vacuum brake power booster |
JP8536193A JPH11505787A (ja) | 1995-05-30 | 1996-05-30 | 真空式ブレーキ倍力装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19519699.6 | 1995-05-30 | ||
DE19519699A DE19519699A1 (de) | 1995-05-30 | 1995-05-30 | Unterdruckbremskraftverstärker |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996038329A1 true WO1996038329A1 (de) | 1996-12-05 |
Family
ID=7763159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1996/002322 WO1996038329A1 (de) | 1995-05-30 | 1996-05-30 | Unterdruckbremskraftverstärker |
Country Status (6)
Country | Link |
---|---|
US (1) | US6053090A (de) |
EP (1) | EP0828642B1 (de) |
JP (1) | JPH11505787A (de) |
DE (2) | DE19519699A1 (de) |
ES (1) | ES2137001T3 (de) |
WO (1) | WO1996038329A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6004460A (en) * | 1998-03-19 | 1999-12-21 | Seychelle Environmental Technology, Inc. | Portable water filtration bottle |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19819424A1 (de) * | 1998-04-30 | 1999-11-04 | Continental Teves Ag & Co Ohg | Leitungsführung in einem Vakuum-Bremskraftverstärker |
JP4491673B2 (ja) * | 1999-06-30 | 2010-06-30 | 日立オートモティブシステムズ株式会社 | 制御ブースタ |
FR2908099B1 (fr) * | 2006-11-02 | 2009-01-09 | Bosch Gmbh Robert | Servomoteur pneumatique tandem d'assistance de freinage d'un vehicule |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994011226A1 (de) * | 1992-11-13 | 1994-05-26 | Itt Automotive Europe Gmbh | Unterdruckbremskraftverstärker |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3744012A1 (de) * | 1987-12-24 | 1989-07-06 | Teves Gmbh Alfred | Tandembremskraftverstaerker fuer kraftfahrzeuge |
DE4324688A1 (de) * | 1993-07-23 | 1995-01-26 | Teves Gmbh Alfred | Unterdruckbremskraftverstärker |
DE4301336A1 (de) * | 1993-01-20 | 1994-07-21 | Teves Gmbh Alfred | Betätigungseinheit für eine blockiergeschützte Kraftfahrzeugbremsanlage |
DE4404334A1 (de) * | 1994-02-11 | 1995-08-17 | Teves Gmbh Alfred | Betätigungseinheit für eine blockiergeschützte Kraftfahrzeugbremsanlage |
DE4405092C1 (de) * | 1994-02-17 | 1994-12-22 | Lucas Ind Plc | Pneumatischer Kraftverstärker mit elektromagnetischer Hilfssteuerung, insbesondere für Kraftfahrzeug-Bremsanlagen |
-
1995
- 1995-05-30 DE DE19519699A patent/DE19519699A1/de not_active Withdrawn
-
1996
- 1996-05-30 US US08/952,571 patent/US6053090A/en not_active Expired - Lifetime
- 1996-05-30 DE DE59602641T patent/DE59602641D1/de not_active Expired - Lifetime
- 1996-05-30 JP JP8536193A patent/JPH11505787A/ja not_active Ceased
- 1996-05-30 EP EP96917466A patent/EP0828642B1/de not_active Expired - Lifetime
- 1996-05-30 ES ES96917466T patent/ES2137001T3/es not_active Expired - Lifetime
- 1996-05-30 WO PCT/EP1996/002322 patent/WO1996038329A1/de active IP Right Grant
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994011226A1 (de) * | 1992-11-13 | 1994-05-26 | Itt Automotive Europe Gmbh | Unterdruckbremskraftverstärker |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6004460A (en) * | 1998-03-19 | 1999-12-21 | Seychelle Environmental Technology, Inc. | Portable water filtration bottle |
Also Published As
Publication number | Publication date |
---|---|
US6053090A (en) | 2000-04-25 |
EP0828642A1 (de) | 1998-03-18 |
JPH11505787A (ja) | 1999-05-25 |
DE19519699A1 (de) | 1996-12-05 |
DE59602641D1 (de) | 1999-09-09 |
EP0828642B1 (de) | 1999-08-04 |
ES2137001T3 (es) | 1999-12-01 |
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