Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
  • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
  • B62D1/16—Steering columns
  • B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
  • B62D1/181—Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory

Definitions

• the invention relates to a motor vehicle steering column with a console fixed to the vehicle and a tubular casing according to the preamble of patent claim 1.
• a motor vehicle steering column in which a casing tube can be tilted relative to a console fixed to the vehicle via an adjusting device.
• the adjusting device comprises a lever which is pivotably mounted on the console and which can be deflected about a pivot axis " by a drive device — here an electric motor.
• the drive device drives a gear spindle on which a spindle nut is seated.
• the propulsion of the spindle nut causes a deflection of the Lever about a pivot axis on the console, so that the casing tube connected to the lever is carried up or down.
• an adjusting device for adjusting the inclination of a tubular casing is provided, the one Includes pivotally mounted on a bracket fixed to the vehicle, at the output end of a deflection bracket is articulated.
• the deflection bracket is pivotally connected to the casing tube, so that when the lever is deflected, the deflection bracket and thus the casing tube are carried along.
• the transmission ratio between the lever and the deflection bracket is designed such that a small deflection of the lever causes a large adjustment path of the deflection bracket.
• the adjustment path of the steering column can be freely chosen without requiring more installation space.
• the tubular casing can be movably mounted on the console on a pivot axis extending transversely to the longitudinal axis of the motor vehicle steering column.
• This pivot axis forms the fulcrum of the motor vehicle steering column when adjusting the inclination. This means that the farther the pivot axis is arranged from the steering wheel, larger adjustment paths for the steering wheel can be achieved by means of small adjustment paths of the adjustment device.
• the jacket tube can also be kept adjustable in length.
• two mutually displaceable tubular casing sections are provided, a flange being formed on the outer tubular casing section below the longitudinal axis of the motor vehicle steering column.
• a swivel axis of the deflection bracket passes through the molded flange.
• the adjustment path can be determined when adjusting the inclination. The closer the pivot axis of the deflection bracket is to the pivot axis of the lever that is fixed to the vehicle, the greater the adjustment paths that are possible.
• the deflection bracket can have an essentially U-shaped shape and can be guided around the outer tubular casing section below. The free leg ends of the deflection bracket can be articulated on the output end of the lever. This can improve the rigidity of the entire system.
• the lever can have an essentially triangular longitudinal sectional shape, so that the drive end is formed by a tip of the triangle and the output end by another tip of the triangle.
• the leg lengths of the triangular lever determine the lever ratio of the adjustment device.
• the lever can be designed with mirror symmetry with respect to the longitudinal axis of the motor vehicle steering column, so that a precise height adjustment is possible without lateral offset.
• Fig. 2 shows the motor vehicle steering column according to FIG. 1 in a view from the side and
• Fig. 3 shows a motor vehicle steering column in a second embodiment.
• FIG. 1 shows a motor vehicle steering column 1 with a two-part, telescopic casing tube 2, in which a steering spindle 3 is rotatably mounted.
• the casing tube 2 is connected to a console, not shown, which is fixed to the vehicle.
• the casing pipe 2 is composed of an inner casing pipe section 4 and an outer casing pipe section 5.
• the inner jacket tube section 4 is connected to a threaded spindle 6, which is driven by an electric motor 7. ever after the direction of rotation of the threaded spindle 6, the inner tubular casing section 4 is moved in or out of the outer tubular casing section 5 in the direction of the arrow A, so that a comfort setting of the motor vehicle steering column 1 is provided in the longitudinal direction.
• a second electric motor 8 is fastened to a holder 9 on the outer tubular casing section 5.
• the holder 9 has two stub axles 10 on the outside, which together form a pivot axis 11.
• the stub axles 10 are pivotally mounted in the console.
• a second threaded spindle 12 is driven by the electric motor 8, so that, depending on the direction of rotation of the threaded spindle 12, a spindle nut 13 seated on the threaded spindle 12 is moved back and forth in the direction of the arrow B.
• the spindle nut 13 belongs to an adjusting device 14, by means of which the casing tube 2 is held so as to be inclinable relative to the console fixed to the vehicle.
• the adjusting device 14 comprises a lever 15 and a deflection bracket 16.
• the lever 15 has an input end 17 and an output end 18.
• the drive end 17 is pivotally attached to the spindle nut 13 so that the lever 15 can perform a pivoting movement in the direction of arrow C about a pivot axis 19.
• the lever 15 extends at an angle from the drive end 17 to the driven end 18, to which the deflection bracket 16 is articulated via a swivel axis 20, so that the deflection bracket 16 can be moved about the swivel axis 20 in the direction of the arrow D.
• the lever 15 is provided with bearing pins 21 which are mounted in corresponding receptacles in the console and thus form a pivot axis 22 about which the lever 15 can be pivoted in the direction of the arrow E.
• the deflection bracket 16 articulated on the output end 18 of the lever 15 is pivotably mounted on its end 23 opposite the pivot axis 20 on a flange 24 of the outer casing tube section 5, so that movement of the deflection bracket 16 about a pivot axis 25 in the direction of the arrow F is possible.
• FIG. 2 shows the motor vehicle steering column 1 shown in perspective in FIG. 1 in a view from the side.
• a console 26 fixed to the vehicle is indicated.
• the motor vehicle steering column 1 is mounted on the bracket 26 via a schematically illustrated clamp 28 in such a way that the motor vehicle column 1 can move on a circular path in the direction of the arrow G about a pivot axis 27 extending transversely to the longitudinal axis L of the motor vehicle steering column 1.
• the movement of the motor vehicle steering column 1 along the arrow direction G is realized by means of the adjusting device 14 and offers the occupant the possibility of adjusting the inclination of the steering wheel.
• the electric motor 8 is activated by the driver, so that the threaded spindle 12 rotates.
• the spindle nut 13 seated on the threaded spindle 12 is moved in the direction of arrow B into the position shown in dashed lines, and thus the lever 15 is deflected about its pivot axis 22 in the direction of arrow E.
• the output end 18 of the lever 15 takes the deflection bracket 16 with it during its movement, so that it rotates about the pivot axis 25 in the direction of the arrow F and thereby moves the motor vehicle steering column 1 upward in the direction of the arrow G.
• The- The movement takes place on a circular path around the pivot axis 27 of the motor vehicle steering column 1.
• the movement of the spindle nut 13 on a circular path about the pivot axis 22 is compensated for by the pivotable mounting of the electric motor 8 or holder .9, which enables the threaded spindle 12 to pivot about the pivot axis 11.
• this compensation can also be achieved with a link guide or a flexible threaded spindle.
• FIG. 3 shows a second embodiment of the invention, the same reference numerals as in FIGS. 1 and 2 being used. Components that differ from the embodiment according to FIGS. 1 and 2 are apostrophized.
• the adjusting device 14 * comprises a lever 15, the pivot axis 22 x of which, in contrast to the embodiment according to FIGS. 1 and 2, is advanced in the direction of the steering wheel.
• this has the advantage that, in the event of a crash, the forces introduced into the steering column cause tensile stress in the threaded spindle 12.
• the inclination is adjusted as follows using the adjusting device 1 ⁇ :
• the threaded spindle 12 is driven by the electric motor 8, so that the spindle nut 13 moves on the threaded spindle 12 in the direction of arrow B.
• the lever 15 is deflected about the pivot axis 22 according to arrow E x , as a result of which the pivot axis 20 ⁇ is shifted downward accordingly.
• the deflection bracket 16 is pivoted about the pivot axis 25 in the direction of the arrow F ⁇ , so that the motor vehicle steering column 1 moved downward according to arrow direction G about the pivot axis 27 on a circular path.
• the movement of the spindle nut 13 can be compensated for by the pivotable mounting of the electric motor 8 or the holder 9.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Steering Controls (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=32185336

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (64)

Citations (6)

Family Cites Families (10)

• 2002
  • 2002-11-07 DE DE10251764A patent/DE10251764A1/de not_active Ceased
• 2003
  • 2003-09-19 EP EP03810395A patent/EP1558479B1/de not_active Expired - Lifetime
  • 2003-09-19 US US10/534,369 patent/US8146945B2/en not_active Expired - Fee Related
  • 2003-09-19 JP JP2004548720A patent/JP2006505438A/ja not_active Ceased
  • 2003-09-19 ES ES03810395T patent/ES2264038T3/es not_active Expired - Lifetime
  • 2003-09-19 DE DE50303393T patent/DE50303393D1/de not_active Expired - Lifetime
  • 2003-09-19 WO PCT/EP2003/010458 patent/WO2004041619A1/de not_active Ceased

Patent Citations (6)

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