DE19800643A1 - Parking brake for motor vehicle - Google Patents

Parking brake for motor vehicle

Info

Publication number
DE19800643A1
DE19800643A1 DE1998100643 DE19800643A DE19800643A1 DE 19800643 A1 DE19800643 A1 DE 19800643A1 DE 1998100643 DE1998100643 DE 1998100643 DE 19800643 A DE19800643 A DE 19800643A DE 19800643 A1 DE19800643 A1 DE 19800643A1
Authority
DE
Germany
Prior art keywords
parking brake
motor vehicle
part
wheel
brake
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
Application number
DE1998100643
Other languages
German (de)
Other versions
DE19800643C2 (en
Inventor
Rainer Schmid
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.)
Siemens AG
Original Assignee
Siemens AG
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.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to DE1998100643 priority Critical patent/DE19800643C2/en
Publication of DE19800643A1 publication Critical patent/DE19800643A1/en
Application granted granted Critical
Publication of DE19800643C2 publication Critical patent/DE19800643C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D63/00Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
    • F16D63/008Brakes acting on a linearly moving member
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T1/00Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/005Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles by locking of wheel or transmission rotation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00Type of actuator operation force
    • F16D2121/18Electric or magnetic
    • F16D2121/20Electric or magnetic using electromagnets
    • F16D2121/22Electric or magnetic using electromagnets for releasing a normally applied brake
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2127/00Auxiliary mechanisms
    • F16D2127/06Locking mechanisms, e.g. acting on actuators, on release mechanisms or on force transmission mechanisms
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2129/00Type of operation source for auxiliary mechanisms
    • F16D2129/06Electric or magnetic
    • F16D2129/08Electromagnets
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H63/00Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/40Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
    • F16H63/48Signals to a parking brake or parking lock; Control of parking locks or brakes being part of the transmission

Abstract

A parking brake (24) has at least one first part (25) connected to a wheel and a second part (29) fixed to the vehicle chassis and which is brought into engagement with the first part in order to hold the vehicle stationary. The first part has at least one opening (28) and the second part has a protrusion (29) which is fed into the opening when the parking brake is actuated, thereby making a shape-locking connection between the wheel and the vehicle chassis.

Description

Parking brakes for motor vehicles serve to hold one to secure the or parked vehicle against rolling away. Rolling away must be safe, especially on sloping roads be prevented. Conventional parking brakes are either which is designed as a drum brake with two brake shoes with brake pads mechanically against the inner wall of the brake drum pressed. In the case of disc brakes the parking brakes as additional brake calipers realized by hand using cables and tension levers the brake disc pressed and locked in this position will. The effort required for such parking brakes finally act through the frictional force is relatively high.

The invention is based, with little on the task turned a reliable and effective parking brake for To create motor vehicles.

This object is achieved by the parking brake solved according to claim 1. Appropriate further training of the Er invention are laid down in the subclaims.

The advantages of the invention come in particular in brake systems with electrically controlled and actuated wheel brakes for Carry. The controls of such brake systems are continuously maintained Information about the wheel speeds, thus recognize when that Motor vehicle stands still and then apply the parking brake free for the procedure. The parking brake engaged si then the motor vehicle is extremely effective against rolling away even in the event of a power failure in the motor vehicle. Before the motor vehicle starts moving, the feast Parking brakes from the brake control through an electric  Control signal can be solved. It is guaranteed that Motor vehicle not inevitable even in the event of a power failure can set in motion.

Exemplary embodiments of the invention are described below the drawing explained. Show it:

FIG. 1 shows an electric brake system of a motor vehicle with an inventive parking brake;

Fig. 2: a first embodiment of a parking brake according to the invention in an expanded view;

Fig. 3: The parking brake of Figure 2 in a lateral sectional view;.

Fig. 4: a second embodiment of a parking brake according to the invention in a side view and Teilan

Fig. 5: the parking brake of FIG. 4 in a partial view from the front.

A brake system 1 ( Fig. 1) for a motor vehicle with four wheels, which is not shown here, includes four brakes 2 , each with a brake disc 3 and a actuating device in the form of a wheel brake actuator 4 - in the fol lowing also as a wheel brake actuator or only called actuator - have. The wheel brake actuators 4 are each integrated in an associated brake caliper 5 , that is, combined with it to form a unit. The brake caliper 5 is formed as a floating caliper, via brake pads 6 , when the wheel brake actuator 4 is actuated, a braking torque is exerted on the brake disc 3 . However, the brake system 1 can also be designed differently without impairing the invention.

The wheel brake actuators 4 are supplied with electrical energy by a battery 8 via supply lines 9 . An electronic control unit (ECU) 10 evaluates signals from wheel speed sensors 12 , which are provided on each wheel. The signals arrive at the control device 10 via signal lines 14 .

The control unit 10 is also connected to a brake value transmitter or Pe dalsimulator 15 , which is operated by the driver of the motor vehicle via a pedal 16 . The pedal force simulator 15 converts the movement of the brake pedal 16 , that is to say the force exerted by the driver as usual, and the pedal travel into electrical signals. The pedal actuation is converted into electrical signals by a plurality of sensors, for example one or two displacement sensors 18 and one or two pressure sensors 19 , which reach control unit 10 via signal lines 20 and are evaluated there.

The control unit 10 determines target values for the brake actuation from the sensor signals and transmits them via control lines 22 to the individual wheel brake actuators 4 . To calculate the target values for the wheel brake actuators in the event of an intervention of anti-lock or driving stability controls, the control unit 10 evaluates further sensor signals, for example the signals from the wheel speed sensors 12 and signals from lateral acceleration and yaw rate sensors, which are known here because they are known per se. not be explained further.

The wheel brake actuators 4 can be provided on each wheel or only on groups of wheels. They are operated or set electrically continuously and they generate an independent brake pressure for each wheel or for each wheel group.

In the electronic control unit 10 , commands of the driver are also evaluated, which the driver inputs via a switch or the like, in order to actuate the parking brake (see FIGS. 2 to 5) or to release it again. Upon receipt of an engagement command for the parking brake, the control device 10 checks whether the motor vehicle is no longer moving and only then issues a control command to the parking brake in order to actuate or engage it.

In a first example of a parking brake 24 according to the invention (FIGS . 2 and 3), the brake disc 3 is attached to a wheel hub 25 . This wheel hub has depressions or bores 28 distributed along its outer circumference on its end face 26 . A locking bolt, hereinafter referred to as bolt 29 , is pressed by a spring 30 in the direction of the wheel hub 25 and can penetrate into one of the bores 28 if it faces it.

On a wheel carrier or brake carrier 34 , an electric lifting magnet 32 with a magnetic posture is fastened, in which the bolt 29 is movably guided. The bolt is biased against the magnetic position by the spring 30 . If the lifting magnet is triggered, the spring 30 presses the bolt 29 against the wheel hub 25 . If the bolt does not hit a recess 28 directly, the wheel can only turn a little further after releasing the service brake until the spring-loaded bolt engages in the next bore 28 .

The shape of the bolt 29 and that of the recesses 28 is designed such that the frictional force between the bolt and the recess together with the compressive force of the spring 30 form a self-locking system. This ensures that, on the one hand, the lock cannot open automatically and, on the other hand, only a small force is required for unlocking, which the lifting magnet 32 can easily apply. Before activating the parking brake 24 , the control unit 10 must have determined that the wheels are no longer rotating. To release the parking brake, the solenoid 32 is activated and pulls the bolt 29 against the spring force out of the recess 28 in order to then lock it in its rest position with a magnetic posture.

The magnetic position function in the rest position and lock Gelungskraft with spring can also be reversed so that the Rest position held by the spring force and the latches is caused by the magnetic posture.

The brake disc 3 and the wheel hub 24 are fastened to an axle shaft 28 and rotate with the associated wheel (not shown here). The lifting magnet 28 and the bolt 26 are attached to a non-rotating part of the chassis, for example to a wheel carrier or brake carrier 29 , BEFE Stigt.

In another parking brake 36 according to the invention ( FIGS. 4 and 5), a wheel hub 38 connected to the brake disc 3 and the axle shaft 33 has a toothing 39 on its outer circumference. A pivotally mounted pawl 40 is pressed by a spring 41 from the outside in the direction of the teeth 39 . It has a projection 42 which can penetrate into a tooth gap 44 if it is opposite it. The pawl 40 will only penetrate into a tooth gap 44 with its projection 42 when a lifting magnet with magnetic holder 45 is triggered electrically.

Both the parking brake 24 and the parking brake 36 , the solenoids 32 and 45 are advised by the Steuerge 10 . This evaluates the signals from the wheel speed sensors 12 and is therefore always informed whether the wheels are still turning or whether the motor vehicle is stationary. The control unit 10 only releases the solenoids 32 or 45 when it is at a standstill. The bolt 29 is then pressed by the spring 30 into one of the bores 28 , where ge is secured by the motor vehicle in a simple and effective manner against rolling away.

In the parking brake 36 , the control unit 10 , when it detects a standstill of the motor vehicle and receives a corresponding command from the driver, releases the solenoid 45 and thus the projection 42 of the pawl 40 can press into a tooth gap 44 , which also causes the motor vehicle to be subjected to a condition Rolling away is secured.

The parking brake must be released by a driver command before starting again. The control unit 10 receives the driver command and controls the solenoid 32 or the solenoid 45 . Thus, the bolt 29 or the pawl 40 are pulled away from the wheel hub 25 or 38 and the wheel can turn freely again.

As a rule, it is sufficient to provide two of the wheels of the motor vehicle, preferably the rear wheels, with a parking brake 24 or 36 . However, since the effort for these brakes is low, each wheel can be equipped with such a parking brake.

In the event of a power failure in the motor vehicle, the lifting magnets 32 and 45 cannot be triggered or energized, the parking brake remains engaged and the motor vehicle cannot move unintentionally.

An advantage of the parking brakes 24 and 36 is that they provide a positive and not only a frictional connection between the wheels and the chassis, and that the parking brake is maintenance-free and more reliable and less prone to failure than conventional parking brakes. It can be attached to any location on the wheel hubs of a motor vehicle. The additional installation of a handbrake is not necessary.

Claims (5)

1. Parking brake ( 24 ) for a motor vehicle, with at least one first part ( 25 ) connected to a wheel and a second part ( 29 ) connected in a rotationally fixed manner to the chassis of the motor vehicle, which for locking the motor vehicle with the first part ( 25 ) in Is brought into engagement, characterized in that the first part ( 25 ) is provided with at least one recess ( 28 ) and the second with a projection ( 29 ) which is inserted into the recess ( 28 ) when the parking brake is actuated and thereby a there is a positive connection between the wheel and the chassis.
2. Parking brake according to claim 1, characterized in
  • - That the motor vehicle with an electrically controlled loading brake ( 2 ) and an electronic control unit ( 10 ) is provided, evaluated by the wheel speed signals and who and the service brake ( 2 ) is controlled, and
  • - That the control unit ( 10 ) prevents the projection from engaging in the recess ( 29 , 42 ) as long as the wheels of the motor vehicle are still rotating.
3. Parking brake according to claim 1 or 2, characterized in that
  • - That the first part is designed as a wheel hub ( 25 ), which is distributed over the region of its circumference arranged th holes ( 28 ), and
  • - That the projection is designed as a bolt ( 29 ) which is pressed by a spring ( 30 ) in the direction of the wheel hub ( 25 ) and is pulled away by a lifting magnet ( 32 ) from the wheel hub ( 25 ).
4. Parking brake according to claim 1 or 2, characterized in that
  • - That the first part is designed as a toothing ( 39 ) provided on the outer circumference of the wheel hub, and
  • - That the second part is designed as a pawl ( 40 ) having a projection ( 42 ) which is pressed by a spring ( 41 ) in the direction of the toothing ( 39 ) and by a lifting magnet ( 45 ) from the toothing ( 39 ) is pulled away.
5. Parking brake according to one of the preceding claims, characterized in that the lifting magnet ( 32 , 45 ) is designed as an electromagnet with a magnetic posture.
DE1998100643 1998-01-09 1998-01-09 Electrically operated service and parking brake for a motor vehicle Expired - Fee Related DE19800643C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1998100643 DE19800643C2 (en) 1998-01-09 1998-01-09 Electrically operated service and parking brake for a motor vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1998100643 DE19800643C2 (en) 1998-01-09 1998-01-09 Electrically operated service and parking brake for a motor vehicle

Publications (2)

Publication Number Publication Date
DE19800643A1 true DE19800643A1 (en) 1998-12-10
DE19800643C2 DE19800643C2 (en) 2000-05-18

Family

ID=7854269

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1998100643 Expired - Fee Related DE19800643C2 (en) 1998-01-09 1998-01-09 Electrically operated service and parking brake for a motor vehicle

Country Status (1)

Country Link
DE (1) DE19800643C2 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0950589A3 (en) * 1998-04-16 2001-02-07 DaimlerChrysler AG Vehicle locking apparatus
DE19941018A1 (en) * 1999-08-28 2001-03-01 Volkswagen Ag Gear selector lever with integrated actuating device for a hand brake
WO2003085280A1 (en) * 2002-04-11 2003-10-16 Ina-Schaeffler Kg Ratchet mechanism for a free-wheel
WO2004041608A2 (en) * 2002-11-02 2004-05-21 Continental Teves Ag & Co. Ohg Hydraulic vehicle brake
DE10325414A1 (en) * 2003-03-18 2004-09-30 Continental Teves Ag & Co. Ohg Method for operating an electromechanically actuated disc brake
EP1621953A1 (en) * 2004-07-26 2006-02-01 Peugeot Citroen Automobiles SA electric parking brake command device enabling brake force adjustment
DE102005057794A1 (en) * 2005-12-03 2007-06-06 Deere & Company, Moline Device for actuating a parking brake
DE102006013509A1 (en) * 2006-03-23 2007-09-27 Siemens Ag Electric parking brake with a control element for switching to a service mode
DE102004009326B4 (en) * 2003-04-28 2015-05-13 Hitachi,Ltd. Electric disc brake device
DE102015200737A1 (en) * 2015-01-19 2016-07-21 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Disc brake
DE102016214804A1 (en) * 2016-08-09 2018-02-15 Audi Ag Parking lock device and motor vehicle
CN109094862A (en) * 2018-05-29 2018-12-28 东莞市联洲知识产权运营管理有限公司 One kind vacuumizing packaging system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE851602C (en) * 1945-03-19 1952-10-06 Transit Res Corp Electrical brake, especially for motor vehicles
US2966244A (en) * 1958-07-28 1960-12-27 Charles G Schreyer Device for holding an automobile against movement
US3200907A (en) * 1963-09-25 1965-08-17 Eimer K Hansen Positive parking brake
DE3941400C2 (en) * 1989-12-15 1992-04-02 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE4207640A1 (en) * 1992-03-11 1993-09-16 Bosch Gmbh Robert Friction brake, especially disc brake, for vehicles and method for braking a vehicle
DE19620344A1 (en) * 1996-02-09 1997-08-14 Teves Gmbh Alfred Combined service and parking brake system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE851602C (en) * 1945-03-19 1952-10-06 Transit Res Corp Electrical brake, especially for motor vehicles
US2966244A (en) * 1958-07-28 1960-12-27 Charles G Schreyer Device for holding an automobile against movement
US3200907A (en) * 1963-09-25 1965-08-17 Eimer K Hansen Positive parking brake
DE3941400C2 (en) * 1989-12-15 1992-04-02 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE4207640A1 (en) * 1992-03-11 1993-09-16 Bosch Gmbh Robert Friction brake, especially disc brake, for vehicles and method for braking a vehicle
DE19620344A1 (en) * 1996-02-09 1997-08-14 Teves Gmbh Alfred Combined service and parking brake system

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0950589A3 (en) * 1998-04-16 2001-02-07 DaimlerChrysler AG Vehicle locking apparatus
DE19816801C2 (en) * 1998-04-16 2001-03-22 Daimler Chrysler Ag Blocking device for a vehicle
DE19941018A1 (en) * 1999-08-28 2001-03-01 Volkswagen Ag Gear selector lever with integrated actuating device for a hand brake
WO2003085280A1 (en) * 2002-04-11 2003-10-16 Ina-Schaeffler Kg Ratchet mechanism for a free-wheel
WO2004041608A2 (en) * 2002-11-02 2004-05-21 Continental Teves Ag & Co. Ohg Hydraulic vehicle brake
WO2004041608A3 (en) * 2002-11-02 2004-07-29 Continental Teves Ag & Co Ohg Hydraulic vehicle brake
DE10325414A1 (en) * 2003-03-18 2004-09-30 Continental Teves Ag & Co. Ohg Method for operating an electromechanically actuated disc brake
DE102004009326B4 (en) * 2003-04-28 2015-05-13 Hitachi,Ltd. Electric disc brake device
EP1621953A1 (en) * 2004-07-26 2006-02-01 Peugeot Citroen Automobiles SA electric parking brake command device enabling brake force adjustment
DE102005057794A1 (en) * 2005-12-03 2007-06-06 Deere & Company, Moline Device for actuating a parking brake
DE102006013509A1 (en) * 2006-03-23 2007-09-27 Siemens Ag Electric parking brake with a control element for switching to a service mode
DE102015200737A1 (en) * 2015-01-19 2016-07-21 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Disc brake
DE102016214804A1 (en) * 2016-08-09 2018-02-15 Audi Ag Parking lock device and motor vehicle
CN109094862A (en) * 2018-05-29 2018-12-28 东莞市联洲知识产权运营管理有限公司 One kind vacuumizing packaging system

Also Published As

Publication number Publication date
DE19800643C2 (en) 2000-05-18

Similar Documents

Publication Publication Date Title
EP2379379B1 (en) Braking system for a motor vehicle and method for controlling it
US7490699B2 (en) Mechanism with load sensor for operating a brake
DE69908733T2 (en) Parking brake in vehicles with conventional braking systems
JP3978261B2 (en) Motor vehicle parking brake device and control method thereof
US6000507A (en) Control or adjustment system for a wheel brake operated by an electric motor
US7143873B2 (en) Motor vehicle brake system comprising a parking brake function and electromechanical wheel brake for such a motor vehicle brake system
US10293800B2 (en) Brake system
CN101332812B (en) Single motor electro wedge brake system using solenoid mechanism for implementing additional functions
KR100562831B1 (en) Parking lock for the automatic transmission of motor vehicles
EP1596089B1 (en) A parking brake assembly
US6447074B2 (en) Parking brake system for motor vehicles
US7734403B2 (en) System for vehicle driver support for stopping and starting procedures
US6439675B1 (en) Method and device for controlling a braking system
KR950011159B1 (en) Process and device for actuating a brake mechanism by a rotating electric motor
US6554744B2 (en) Apparatus and method of controlling the road speed of a motor vehicle
US10086807B2 (en) Method and control device for operating a braking device of a drive train with an automatic gearbox of a vehicle
US6655507B2 (en) Electrically operated parking brake apparatus
US20170345249A1 (en) Brake control
JP4601920B2 (en) Vehicle braking device
US5417624A (en) Actuating means for a motor vehicle locking brake
US4658939A (en) Process and apparatus for the control of a brake unit for automotive vehicles
US6868323B2 (en) Vehicle brake control system
US7828124B2 (en) Electric disk brake
JP3956962B2 (en) Parking lock device
US9387837B2 (en) Brake device

Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
OAV Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee