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
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C11/00—Pivots; Pivotal connections
  • F16C11/04—Pivotal connections
  • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
• • 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
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
• • 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
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C11/00—Pivots; Pivotal connections
  • F16C11/04—Pivotal connections
  • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
  • F16C11/0604—Construction of the male part
• • 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
  • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
  • G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments

Definitions

• the invention relates to an arrangement with a sensor, which is designed to define a zero position of the relevant sensor for detecting deflection movements and for positioning the sensor in this zero position. It relates to an arrangement by means of which deflections are detected on a ball joint, which serves for the storage of parts of a technical system, preferably of parts of a motor vehicle chassis.
• ball joints are used on chassis of motor vehicles in many cases.
• Such ball joints consist of a ball pin whose ball is movable in a joint shell or a joint housing in a variety of directions.
• the corresponding ball pin is an at least approximately axially symmetrical part, which consists of a substantially cylindrical pin, at one end of which is provided for receiving in the joint housing ball.
• the ball opposite the end of the pin is generally provided with a thread, which is guided through a designated opening of a chassis part, such as a wheel carrier, and bolted by a nut on this chassis part.
• a chassis part such as a wheel carrier
• This serves for example for detecting the alignment of a link of a chassis axle and / or for detecting the inclination of the vehicle body. Based on the detection of these attitude parameters, servomotors for the automatic height adjustment of the headlamps and / or for an adaptive cornering light are actuated, for example.
• the elements of the sensor which is at least one transmitter element and at least one reference element, to be the reference base a zero position is defined for the measurement. That is, the sensor forming elements, which are arranged on the one hand on the ball stud and on the other hand on a chassis part, must be positioned in a certain position to each other, which represents a zero position for the measurement.
• the object of the invention is to provide an arrangement for determining a defined zero position and positioning of the deflections on a ball joint detecting sensor.
• the corresponding arrangement should also be designed so that it is easy to implement in terms of manufacturing technology.
• the arrangement for determining a zero position for the measurement of the deflection movements of a ball joint which parts of a mechanical System, preferably parts of a motor vehicle chassis, interconnected, consists of a rigidly connected to a first part of the system joint housing of the ball joint, a rigidly connected to a second part of the system ball pin and a deflection movements of the ball stud in the joint housing detecting sensor with at least two mutually complementary sensor elements.
• one of the aforementioned sensor elements is arranged on the ball pin and one on a relative to the joint housing immovable part of the equipped with the ball joint system.
• the ball pin moves with a arranged at one axial end of the ball joint in the joint housing of the ball joint formed in a known manner and is releasably attached with its opposite end of the ball joint on a mounting eye of the associated part.
• the above-mentioned axial end of the ball pin protrudes through the mounting bracket serving its attachment.
• the lateral surface of the ball pin which otherwise has a circular cross-section, is flattened in an axial region, this flattened region being brought into positive engagement with a correspondingly formed inner contour of the mounting eye or of a disc-shaped element.
• the disk-shaped element in question is applied to the mounting eye and in turn by a positive connection of its outer contour on the part connected to the ball pivot part the personallys ⁇ chtung the ball stud fixed in a predetermined position.
• the flattened axial region formed on the ball stud according to the invention is preferably realized by virtue of the fact that the ball stud has a rectilinear circumferential section in this region.
• the flattened region of the ball stud can be brought directly into a positive connection with the mounting eye of the part to be connected to the ball stud or else with an additionally provided disk-shaped element.
• the formation of a non-round, that is preferably a straight section on its inner contour having Montageauges manufacturing technology is relatively expensive, however, the second variant of preference will be given.
• a correspondingly designed embodiment of the arrangement according to the invention has the ball pin at its end facing away from the ball joint on a thread, via which it is screwed by means of a nut on the mounting eye of the part to be connected to it on the side facing away from the ball joint.
• a countersink with a radially outwardly extending groove is formed on this side of the circular assembly eye in this case.
• the ball pin washer is inserted with a corresponding to the flattened peripheral contour of the ball pin formed inner contour.
• the aforementioned washer has on its peripheral contour on a nose which engages in the trained in this embodiment of the lowering of the mounting eye radially outwardly directed groove.
• the ball pin is brought into positive engagement with the inner contour of the washer, while on the other hand, the outer contour of the washer with the rigidly connected to the ball pin part, for example, the wheel carrier of a vehicle axle, brought into a form fit.
• the sensor serving to measure the deflection movement is provided by means of at least one Magnetoresistive element realized.
• the sensor is formed by a permanent magnet and at least one Hall element.
• the permanent magnet is arranged in the joint ball at the free pole, while this pole opposite to the rigidly connected to the joint housing part at least one Hall element is arranged.
• the sensor is formed with a t ⁇ axialen Hall element or multiple Hall elements.
• the pole of the ball joint and the permanent magnet arranged on it are covered with a cover made of a non-magnetic material for protection against contamination.
• FIG. 2a shows an enlarged detail of the arrangement with a plan view of the front side of the ball stud
• FIG. 4 b a section of the detail according to FIG. 4 a with a section along the line AA
• Fig. 1 shows a possible embodiment of the arrangement according to the invention in a sectional view.
• This is formed for example as part of the chassis of the motor vehicle, in which a wishbone of the chassis via a ball joint 1, 2, 3 is mounted on a wheel.
• the arrangement consists of that in the part 10, that is the wishbone of the system equipped with the ball joint or landing gear, rigidly connected to it bearing shell 1 and formed in a basically known manner ball studs 2, 3, which with its the bearing shell or the joint ball engaged with this side facing away on a second part 11 of the system, for example on a wheel, is screwed using a washer 7 designed according to the invention.
• the ball stud 2, 3 projects through a mounting eye 5 formed on the wheel carrier by means of a steel insert.
• a permanent magnet 8 as part of the sensor 8, 9 arranged.
• To the sensor 8, 9 further includes a preferably by a plurality of (not shown) Hall elements 9 formed sensor module. This is in the respect to the joint housing 1 immovable or in which the joint housing 1 receiving part 10 of the chassis arranged.
• the permanent magnet 8 arranged on the joint ball 3 has different positions relative to the Hall elements of the sensor module which are in a rigid arrangement relative to the joint housing 1.
• the washer 7 used for screwing together the ball stud 2, 3 together with the nut 13 according to the invention has a nose 15 on its outer contour.
• the washer 7 is arranged in a countersink 14 formed on the mounting eye 5 between the nut 13 and the mounting eye 5 and thereby brought into engagement with its nose 15 with a groove 16 on the mounting eye 5 and the countersink 14 radially outwardly guided groove 16.
• FIGS. 2a to 2c again show the ball stud 2, 3 of the arrangement according to FIG. 1 in different views.
• Fig. 2a shows the ball stud 2, 3 with the formed at its one axial end of the joint ball 3 with the pole 17 in a three-dimensional representation.
• the leading through the mounting eye 5 axial end 4 of the ball stud 2, 3 has a flattening.
• the corresponding flattened region 6 each have a rectilinear circumferential portion 12 on the otherwise circular cross-sectional area of the ball stud 2, 3.
• the flattened region 6, after being guided by the mounting eye 5, is brought into engagement with the corresponding inner contour of the washer 13 to be arranged between the nut 13 used for screwing and the mounting eye 5 during the screwing on the wheel carrier 11.
• FIG. 4a shows an enlarged detail of the arrangement shown above in a plan view of the end face of the ball joint 3 opposite end of the ball stud 2, 3.
• the parts of the nut 13 in the example a flange nut
• the Washer 7 realized screwing and in particular the counterbore 14 on the mounting eye 5 as well as in the region of the countersink 14 radially outwardly extending groove 16, in which engages the nose 15 of the washer 7.
• FIG. 4b again shows a section of the detail according to FIG. 4a in a section taken along the line AA.
• Sensor element for example (permanent) magnet
• Sensor element for example Hall element (s) 0, 11 Part 2 Peripheral section 3 Nut 4 Countersink 5 Nose 6 Groove 7 Pol 8 Closure cover 9 Perimeter section 0, 21 Clamping ring 2 Sealing bellows

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=41258353

Family Applications (1)

Country Status (7)

Families Citing this family (4)

Family Cites Families (11)

• 2008
  • 2008-08-28 DE DE102008041634A patent/DE102008041634A1/de not_active Withdrawn
• 2009
  • 2009-08-11 KR KR1020117004971A patent/KR20110053982A/ko not_active Application Discontinuation
  • 2009-08-11 JP JP2011524181A patent/JP2012500947A/ja active Pending
  • 2009-08-11 CN CN2009801349106A patent/CN102138014A/zh active Pending
  • 2009-08-11 US US13/060,500 patent/US20110204881A1/en not_active Abandoned
  • 2009-08-11 EP EP09776138A patent/EP2315954A1/de not_active Withdrawn
  • 2009-08-11 WO PCT/DE2009/050044 patent/WO2010022719A1/de active Application Filing

Non-Patent Citations (1)

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