Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
  • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
  • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
  • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
  • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
  • B60G15/067—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit
  • B60G15/068—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit specially adapted for MacPherson strut-type suspension
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
  • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
  • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
  • B60G15/062—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper
  • B60G15/063—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper characterised by the mounting of the spring on the damper
• • 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
  • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
• • 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
  • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
  • B60G17/021—Spring characteristics, e.g. mechanical springs and mechanical adjusting means the mechanical spring being a coil spring
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
  • B60G2202/30—Spring/Damper and/or actuator Units
  • B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
  • B60G2202/312—The spring being a wound spring
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
  • B60G2202/40—Type of actuator
  • B60G2202/42—Electric actuator
• • 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
  • B60G2204/12—Mounting of springs or dampers
  • B60G2204/124—Mounting of coil springs
  • B60G2204/1242—Mounting of coil springs on a damper, e.g. MacPerson strut
• • 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
  • B60G2204/12—Mounting of springs or dampers
  • B60G2204/128—Damper mount on vehicle body or chassis
• • 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
  • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
  • B60G2204/419—Gears
• • 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
  • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
  • B60G2204/45—Stops limiting travel
  • B60G2204/4502—Stops limiting travel using resilient buffer
  • B60G2204/45021—Stops limiting travel using resilient buffer for limiting upper mount movement of a McPherson strut
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2500/00—Indexing codes relating to the regulated action or device
  • B60G2500/20—Spring action or springs
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2500/00—Indexing codes relating to the regulated action or device
  • B60G2500/30—Height or ground clearance

Definitions

• the invention relates to a vehicle chassis with a spring support for supporting a coil spring clamped between two spring plates and a vibration damper, in which a region of the piston rod and / or the damper tube is arranged within the coil spring, at least one spring plate using a drive unit consisting of a stator and rotor formed ring electric motor and a transmission formed from a threaded spindle and a threaded screw, is axially adjustable.
• a spring support within a vehicle chassis which serves to support a coil spring tensioned between two spring plates, comprising at least one axially adjustable spring plate and fastenings on the vehicle chassis and on the vehicle body, the spring plate being axially driven by a drive unit is positioned.
• An electric motor is used as the drive unit, a gear being arranged between the axis of rotation of the electric motor and the spring plate.
• the disadvantage of this spring carrier is that a large overall height is required between the vehicle body and the upper spring plate, which means that the piston rod of the shock absorber or spring strut must be particularly long and therefore prone to buckling, or it makes the use of this spring carrier for spring struts difficult.
• the spring support described here requires a large number of mechanical components, as a result of which it entails high production costs.
• WO-A 02/08001 describes a device for controlling movements of the bodywork of motor vehicles, the bodywork being supported indirectly or directly on at least one wheel axle via a series connection comprising an active actuator and a supporting spring.
• the actuator is formed by an electromechanical drive which is provided axially outside of a helical spring and is in operative connection with an axially underlying ball screw drive including the spindle nut.
• DE-A 1 95 10 032 a relatively large axial installation space is also required here, so that the same disadvantages apply to this document.
• DE-C 1 01 01 694 shows a vehicle chassis, including a spring support for supporting a helical spring clamped between two spring plates and a vibration damper, in which an area of the piston rod and / or the damper tube is arranged within a helical spring, at least one Spring plate is axially adjustable by means of a drive unit, formed from an electric motor and gear.
• the electric motor is designed as a ring motor with an external stator and an internal rotor.
• the inside of the rotor carries a movement nut which axially adjusts a spring plate carrier, which is designed as a threaded spindle on the outside and is connected to the spring plate. Movement nut and spring plate are designed as ball screws.
• the vehicle chassis according to the invention which contains the spring support, has the advantage that the overall height can be further reduced.
• the spring support can also be used for conventional strut designs without any special structural changes. Even when used with normal spring-shock absorber combinations, neither other shock absorbers nor other springs need to be used if an axially adjustable spring support is used as an alternative to the normal spring support. It is also advantageous that the spring support according to the invention has only a few components and can therefore be produced inexpensively.
• Another advantage over the prior art is the fact that, due to the larger lever arm that now results in a larger diameter of the electric ring motor, a larger actuating torque can be generated.
• Spring supports including spring and shock absorbers.
• Figures 1 to 3 show longitudinal sections through differently designed spring supports, including springs and shock absorbers, the same components being provided with the same reference numerals.
• the spring support shown in FIG. 1 serves to receive a helical spring 1, in which it is shown in this example that the one end region of the helical spring 1 is supported against a spring plate 2.
• a shock absorber 3 with a piston rod 5 which is axially immersed axially in a shock absorber tube 4 is arranged centrally within the helical spring 1.
• This shock absorber can be designed with a predetermined, predetermined damping. However, a damper with variable damping force can also be used.
• the wheel suspension is connected in the lower area via a flange, not shown.
• the piston rod 5 is connected in a known manner via components 6 of the vehicle body.
• connection parts 8 which are designed to be angular and shock-elastic, which in turn are operatively connected to the component 6 of the vehicle body by means of screw bolts 9.
• the spring support interacts with an adjusting device 10, which is formed by a ring electric motor (inductive motor), including a stator 1 1 and a rotor 1 2, which are arranged to form an air gap 13 within a housing 1 4.
• the ring motor essentially consists of electrical windings which, together with transformer plate packs, generate an electromagnetic field.
• the electrical windings, the transformer sheets and possibly also sensors and electrical or electronic components of the control and evaluation electronics can, if necessary, be cast into the outer housing 1 4 by means of a later hardening plastic compound.
• the rotor 1 2 is supported relative to the housing 14 carrying the stator 1 1 via a ball bearing 1 5.
• Radially within the axial height of the ring electric motor is on the one hand on the piston rod 5, for example via needle bearings 16 Threaded spindle 1 7 and a threaded nut 1 8, the threaded nut 18 completely and the threaded spindle 1 7 are at least partially arranged within the axial height of the housing 14 of the ring electric motor.
• a plain bearing can also be used.
• the needle bearing 1 6 is arranged here in the lower part of the threaded spindle 1 7, and if necessary a further needle bearing can also be provided in the upper part thereof.
• a further reduction in the axial height is possible if the inner diameter of the threaded spindle 17 is larger than the diameter of the shock absorber housing. Then the threaded spindle 1 7 can overlap the shock absorber housing.
• the inner housing part 1 4 'carrying the rotor 1 2' is provided with a radial projection 19 which is non-positively connected to the upper end region 20 of the threaded spindle 1 7.
• a rolling bearing 21 extends on the shoulder side between the upper part of the housing 14 and the inner housing part 14 '.
• the threaded spindle 1 7 is also set in rotation in a similar manner, so that the threaded nut 1 8 moves up and down over the balls 22 provided between the threaded spindle 1 7 and it can be, whereby an axial adjustment of the spring plate 2 is effected.
• the spring plate 2 is mounted on a radial plate 2 ′ of the threaded nut 18, which is provided radially inside the ring electric motor or the rotor 1 2.
• Figure 2 shows an alternative embodiment of the spring support shown in Figure 1.
• the adjusting device 10 is provided axially outside of the coil spring 1, the dimensions of the ring electric motor remaining approximately within the radial extent of the coil spring 1.
• the ring electric motor is formed by a stator 11 and a rotor 1 2.
• the spring plate 2 or the same supporting radial plate 2 ' lies axially below the housing 14, so that the adjusting device 10 is compact.
• a roller bearing 21 is used, a flexible sheet metal membrane 23 also being provided between the inner housing part 14 'and the threaded spindle 17, which differs from FIG. 1 and which is welded 24, 25 to the inner housing part 1 4' on the one hand and to the threaded spindle on the other hand 17 is connected. Otherwise, the further structure remains analogous to FIG. 1.
• the design according to FIG. 3 differs from the design according to FIG. 2 in that the housing part 14 connected to the rotor 1 2 is not connected torsionally directly to the threaded spindle 1 7 of the ball rolling gear.
• a planetary gear is provided between these two components.
• the housing 1 4 of the ring electric motor is supported, as in the embodiments according to FIGS. 1 and 2, directly on the upper end of the piston rod 5 and on the connecting part 8 supported on the vehicle body.
• the downwardly extending part 26 of the sleeve of the housing 14 surrounding the end of the piston rod 5 is designed with a gear toothing 27.
• a gear toothing 28 is also provided on the upper part of the housing part 14 ', but is designed as an internal toothing.
• Planet gears 29 run between these two gear teeth 27, 28.
• the planet gears 29 are connected to the threaded spindle 17 via axes 30. With these constructions, the positions have to be adjusted accordingly.
• the threaded spindle 17 is supported by a bearing 31 on the housing 14 of the ring electric motor, but this bearing 31 is outside the planetary gear and thus also guides the planetary gear.
• the upper part 32 of the inner housing part 1 4 ' is supported in the embodiment according to FIG. 3, then via a further bearing 33 relative to the housing 14, as a result of which the gear toothing 28 arranged on this upper part 33 is also supported.
• the adjusting device can be equipped with an electromagnetic or mechanical brake, especially in the area of the ring electric motor.
• This brake is intended to prevent an unintentional adjustment of the adjustment device after the vehicle electronics fail or after the engine has been switched off.
• This brake is designed in the usual way and is not shown in detail.
• the ring electric motor is switched as a generator and that energy is recovered when the vehicle body pitch or roll.
• the adjustable spring supports according to the invention by installing the adjustable spring supports according to the invention, the use of anti-roll bars on the front and / or rear axle can be omitted.
• the devices described are also particularly suitable for accommodating sensors, actuators and data transmission devices for controlling the suspension.
• suitable materials for the ball screw and the ring electric motor By choosing suitable materials for the ball screw and the ring electric motor, further advantages can be achieved. This results in a dynamic improvement when using composite materials for the rotor and the connection of the rotor to the threaded spindle.
• the stator and the housing are formed in Pressure gelling technology can achieve better heat dissipation and a reduction in manufacturing costs.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Vehicle Body Suspensions (AREA)
• Fluid-Damping Devices (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=30775618

Family Applications (1)

Country Status (8)

Families Citing this family (39)

Family Cites Families (22)

• 2002
  • 2002-11-28 DE DE10255764A patent/DE10255764B3/de not_active Expired - Lifetime
• 2003
  • 2003-10-29 WO PCT/EP2003/011969 patent/WO2004048135A1/de active Application Filing
  • 2003-10-29 KR KR1020057005958A patent/KR20050071551A/ko not_active Application Discontinuation
  • 2003-10-29 EP EP03769465A patent/EP1567367A1/de not_active Withdrawn
  • 2003-10-29 JP JP2004554296A patent/JP2006507969A/ja active Pending
  • 2003-10-29 AU AU2003278150A patent/AU2003278150A1/en not_active Abandoned
  • 2003-10-29 CN CN200380104324XA patent/CN1717340B/zh not_active Expired - Fee Related
• 2005
  • 2005-04-15 US US11/107,050 patent/US20060163863A1/en not_active Abandoned

Non-Patent Citations (1)

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