Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
  • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
  • B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
  • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
  • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
  • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
  • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
  • G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
  • B60G11/32—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds
  • B60G11/48—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds not including leaf springs
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
  • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
  • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
  • B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
  • B60G17/01933—Velocity, e.g. relative velocity-displacement sensors
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
  • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
  • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
  • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
  • G01D5/16—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying resistance
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
  • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
  • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
  • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
  • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2200/00—Indexing codes relating to suspension types
  • B60G2200/10—Independent suspensions
  • B60G2200/14—Independent suspensions with lateral arms
  • B60G2200/144—Independent suspensions with lateral arms with two lateral arms forming a parallelogram
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
  • B60G2204/10—Mounting of suspension elements
  • B60G2204/11—Mounting of sensors thereon
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
  • B60G2400/25—Stroke; Height; Displacement
  • B60G2400/252—Stroke; Height; Displacement vertical
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2401/00—Indexing codes relating to the type of sensors based on the principle of their operation
  • B60G2401/17—Magnetic/Electromagnetic
  • B60G2401/172—Hall effect

Definitions

• the present invention relates to a device for measuring the jounce position of a motor vehicle according to the preamble of independent claim 1, and to a motor vehicle having the features of the preamble of independent claims 9 and 10.
• sensors are used with the aim of achieving a constant vehicle level even with different loading conditions, which determine the jounce state by determining the angle of rotation.
• These sensors are mounted in the region of the wheel suspension in the region of the wheel well on the chassis of the motor vehicle and connected by means of a steering knuckle with a handlebar, so that a change of the jounce state by loading an approach of the handlebar to the chassis and thus a corresponding pivoting of the effected on the handlebars rotational angle sensor causes.
• the rotation angle sensor emits the change in angle of the steering knuckle as electrical variable for obtaining a control signal, by means of which a corresponding signal processing a level control of the vehicle takes place.
• DE 4413341 C2 discloses a low-wear sensor arrangement by a non-contact measuring device by means of magnetic field sensors. In the exemplary embodiment, two magnets aligned in the same direction are arranged on two different components, on the one hand on the handlebar on the other hand on the chassis.
• the change in the deflection position for example by loading the vehicle, is detected by means of an asymmetrically arranged magnetic field sensor fixed between the permanent magnets, wherein the sensor causes a change in the intensity of the magnetic field caused by the change in height and the associated change in the relative distance between the two permanent magnets , converted into an electrical quantity for obtaining a control signal.
• the disadvantage here is on the one hand, the complex design and the large number of required assemblies of the sensor assembly, on the other hand, the necessary due to the arrangement way, large space.
• the inventive device for measuring the jounce position of a motor vehicle, with a number of axle parts and a chassis, wherein between the axle parts and the chassis spring elements are arranged, is mounted such that either a magnet assembly or a magnetic field sensor is disposed directly at a position of the spring element which moves with a change in the compression position both relative to the chassis and towards the axle.
• Magnet arrangement and magnetic field sensor form the only two modules of the device according to the invention.
• the assembly of the device which is not arranged on the spring element, is fastened to the chassis or to the handlebar in such a way that it can be clamped with the other module in the smallest possible space by simple detection of the deflection position on the basis of the force produced under load. which acts directly on the spring element and causes a change in distance between the individual members of the spring determined. This change in distance can be determined, for example, by means of Hall IC sensors and passed on as electrical variable for further processing to form a control signal.
• the magnet arrangement has two magnetic poles of the same name facing one another with respect to an air gap, wherein in a region of the air gap the magnetic field strength becomes zero.
• the use of zero-field detection proves to be advantageous, since the zero field can be detected very precisely and less susceptible to disturbances from the direct environment, in particular by means of Hall ICs.
• linear Hall IC proves to be particularly advantageous in zero-field detection for non-contact measurement, as it can show even the smallest changes in the intensity of the magnetic field.
• a very small deflection is necessary, which is synonymous with the possibility of a tight design and small assembly dimensions.
• the device can be used particularly well for level control of the motor vehicle.
• the sensor can advantageously be coupled simply via a controller to the adjusting actuators of the level control.
• the senor can also be used as an overload sensor, for example in trucks, by arranging the zero field in the region of the maximum permissible axle load. If, for example, an externally adjustable and also depending on requirements changeable value is exceeded, the sensor can generate an electrical signal. This could be an audible warning or a signal to an immobilizer.
• a use of the device for headlamp leveling, for example, by changing the setting angle of headlights is also conceivable.
• a further advantageous embodiment of the device according to the invention provides a multi-part spring element, wherein a first spring with a soft characteristic, for example a helical spring, and at least one second spring with a hard characteristic, for example a plate spring, form the spring element and the individual springs in the spring direction are arranged one behind the other and abut each other in a bearing, wherein the magnet assembly or the magnetic field sensor is attached to the bearing.
• a first spring with a soft characteristic for example a helical spring
• at least one second spring with a hard characteristic for example a plate spring
• Figure 1 Schematic representation of the device arrangement in a one-piece spring element
• Figure 2 Schematic representation of the device arrangement in a multi-part spring element
• Figure 3 Enlargement of a schematic representation of the multi-part strut with magnetic poles and magnetic field sensor in section.
• Figure 1 shows a schematic representation of the device arrangement in a one-piece spring element 1.
• a chassis 2 of the motor vehicle and one of the axle parts 3 form Support surfaces 4 of the spring element 1, which is used with a bias voltage between the chassis 2 and the axle parts 3.
• the axle parts 3 are connected via a stub axle 5 with a wheel 6.
• a magnet assembly 7 is attached directly to the spring element 1.
• a magnetic field sensor 8 is fixed to the chassis 2 in such a way that the magnetic field sensor 8 is located in the region between two magnetic poles 9 of the magnet arrangement 7 which form an air gap 10 facing one another.
• the magnetic poles 9 are arranged facing each other with the same name, so that in the plane formed by the magnetic poles air gap 10 in a plane, the magnetic field strength is zero. If the magnetic field sensor 8 is located in the region of this plane, for example when the motor vehicle is in the normal position, then no field strength is detected by the magnetic field sensor 8. At the smallest displacement from this normal position, the magnetic field sensor 8 in the form of a linear Hall IC is able to detect an increase in the intensity of the field strength.
• Figure 2 shows a schematic representation of the device arrangement in which the spring element 1 is made of several parts.
• the spring element of a coil spring 11 and a plurality of disc springs 12 and a arranged between the coil spring 11 and the plate springs 12 bearing 13 is composed.
• the coil spring 11 and the plate springs 12 are connected to each other in series.
• the bearing surfaces 4, for the disc springs 12, the bearing 13 and the chassis 2 form the bearing surfaces 4.
• the magnet assembly 7 is fixed, whereby on the one hand the mounting of the magnetic field sensor 8 is simplified, and on the other hand, the risk is minimized that in a possible twisting by compression of the coil spring 11, which forms the one-piece spring element 1 (see Figure 1), the magnet arrangement 7 is shifted from the position of the magnet arrangement 7 and the magnetic field sensor 8 which is optimal for the detection to one another.
• the magnetic field sensor 8 is arranged. On the other hand, it is attached to the chassis 2 of the motor vehicle.
• Figure 3 shows an enlargement of the schematic representation of the multi-part strut with magnetic poles 9 and magnetic field sensor 8 in section. A lowermost turn of the coil spring 11 is also on the bearing point 13.
• the magnetic poles 9 are fixed by way of example.
• the magnetic field sensor 8 arranged between the magnetic poles 9 is connected to the axle part 3 on its side facing away from the magnetic poles 9.
• An arrangement of the magnetic field sensor 8 at the bearing 13 with simultaneous attachment of the magnetic poles 9 to the axle 3 is also conceivable.
• Below the bearing point 13 five disc springs 12 are connected in series via the bearing 13 with the coil spring 11, wherein the disc springs 12 are arranged so that the smallest and largest diameters of the individual disc springs 12 touch.
• the magnetic field sensor 8 is arranged such that it is in the normal position of the motor vehicle in the plane of the air gap 10, in which the intensity of the field strength is zero.
• the magnetic field sensor 8 detects no magnetic field in this position. If the vehicle is loaded, for example, the spring element 1 is compressed more strongly. As a result, the magnet assembly 7 moves simultaneously with the spring element 1 relative to the chassis 2 upwards. Since the magnetic field sensor 8 is attached to the chassis 2 of the motor vehicle, the magnetic field sensor does not undergo a spatial change in its position. The smallest change in the position of the magnet assembly 7, however, shifts the position of the two magnetic poles 9, which immediately detects an increase in the intensity of the magnetic field by the magnetic field sensor 8.
• the coil spring 11 and the plate springs 12 are strongly compressed according to their characteristics.
• a spring travel which the helical spring 11 covers, represents a main spring deflection .DELTA.si, a spring deflection of the plate springs 12 a spring deflection .DELTA.S2. Since the characteristics of the plate springs 12 are substantially harder than those of the coil spring 11, the spring travel .DELTA.si which the helical spring 11 travels, is substantially greater than the spring travel .DELTA.S2 of the plate springs 12.
• the travel of the actual compression process of the spring element of the motor vehicle is thus through the disc springs 12 presented in a selectable by spring constant and number of plate springs 12 gear ratio.
• the magnet assembly 7 and the magnetic field sensor 8 are thus exposed only to the smaller spring travel .DELTA.S2, which is synonymous with a smaller space.
• the change in the strength of the magnetic field is caused by, for example, when loading the vehicle, the coil spring is more heavily loaded and a stronger force on the bearing part 13, whereby the below the bearing part 13th located disc springs 12 are also compressed and thus reduces the relative distance between axle 3 and bearing 13 according to the respective characteristics of the disc springs 12.
• This causes a change in the position of the magnetic field sensor 8 between the magnetic poles 9 and thus can be detected by the magnetic field sensor 8, a change in the strength of the magnetic field.
• the relative distance of the bearing 13 to the axle 3 increases accordingly.
• the spring travel of the actual compression process of the spring element of the motor vehicle can also be represented in this embodiment by the disc springs 12 in an adjustable by spring constant and number of disc springs 12 gear ratio.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Vehicle Body Suspensions (AREA)
• Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=35355949

Family Applications (1)

Country Status (7)

Families Citing this family (13)

Family Cites Families (11)

• 2004
  • 2004-09-17 DE DE102004045670A patent/DE102004045670B3/de not_active Expired - Fee Related
• 2005
  • 2005-09-14 KR KR1020077007675A patent/KR20070064615A/ko not_active Application Discontinuation
  • 2005-09-14 US US11/575,424 patent/US20080099967A1/en not_active Abandoned
  • 2005-09-14 JP JP2007531588A patent/JP2008513264A/ja not_active Withdrawn
  • 2005-09-14 WO PCT/DE2005/001606 patent/WO2006029602A1/de not_active Application Discontinuation
  • 2005-09-14 CN CNA200580031171XA patent/CN101027199A/zh active Pending
  • 2005-09-14 EP EP05788568A patent/EP1789269A1/de not_active Withdrawn

Non-Patent Citations (1)

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