Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D5/00—Power-assisted or power-driven steering
  • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
  • B62D5/09—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by means for actuating valves
  • B62D5/093—Telemotor driven by steering wheel movement
  • B62D5/097—Telemotor driven by steering wheel movement gerotor type
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D15/00—Steering not otherwise provided for
  • B62D15/02—Steering position indicators ; Steering position determination; Steering aids

Definitions

• the invention concerns a hydraulic steering arrangement with a housing having a bore, in which an inner control slide and an outer control slide are arranged to be mutually rotatable, with a measuring motor connected with the housing via an intermediary plate, one end of the inner control slide being connectable with the steering shaft of a steering handwheel and the front side of the other end being adjacent to the intermediary plate, with a tooth row arranged to be concentric to the steering shaft and rotatable in dependence of the rotation to the steering shaft, and with a sensor converting the rotation of the tooth row into an electrical signal.
• the senor is arranged in a bore in the intermediary plate.
• Fig. 1 a sectional view of a hydraulic steering arrangement according to the invention, shown schematically
• Fig. 2 the section A in Fig. 1 in an enlarged scale
• Fig. 1 shows a schematic view of a steering arrangement with a housing 2 having a bore 2.
• an outer control slide 3 and inside this an inner control slide 4 are arranged to be rotatable.
• a cardan shaft 5 connects a measuring motor 6 with the outer control slide 3.
• the inner slide 4 is connectable with a steering shaft 8 of a steering handwheel 9 via a coupling 7.
• the coupling 7 is shown as a multi-spline coupling, into which the steering shaft can be inserted.
• the outer control slide 3 and the inner control slide 4 are connected with each other via flat springs 10, permit- ting a limited mutual rotation of the two control slides
• the measuring motor is a gear motor having an outer toothed rim 11 and an inner gear wheel 12, having displacement chambers 13 arranged between them, the whole device being closed by a cover 14.
• the housing 3 and the measuring motor 6 are connected with each other via an intermediary plate 16 by means of screws, of which only one screw 15 is shown, the front side of the end of the control slide 4 not connected with the steering shaft 8 bearing on the intermediary plate 16.
• a spacer ring 17 with a central hole keeps the cardan shaft 5 in the correct axial position.
• the front side of the inner control slide 4 bearing on the intermediary plate 16 is provided with a tooth row 18, incorporated in the front side of the inner control slide
• the side of the intermediary plate 16 facing the inner control slide 4 is provided with a vertical bore 19 connected with a transversal bore 20 leading to the outside.
• a sensor 21 is arranged opposite the tooth row 18, which sensor produces an electrical impulse on each passing of a tooth of the tooth row 18, the impulse being supplied to a smoothing arrangement via an electrical cable 22 led out through the bores 19, 20, the smoothing arrangement converting the electrical impulses into a smoothed electrical signal turning on an electrical motor for as long as it takes, that is, as long as the teeth of the tooth row 18 move past the sensor 21.
• the electric motor drives a hydraulic pump building up the hydraulic pressure in the steering arrangement.
• the steering shaft 8 turns the inner control slide 4, and thus also the tooth row 18 concentric to the steering shaft, relative to the sensor 21, and the electric motor is turned on practically immediately, causing a pressure build-up in the system.
• the tooth row 18 can be a closed gear rim or only part of such a gear rim. As it is incorporated in the front side of the inner control slide 4, costs for additional material and mounting of the tooth row 18 are saved. Further, the tooth row 18 can be made in a simple manner in already existing control slides, namely by means of a milling process. Also the production of the bores 19 and 20 and the arrangement of the sensor 21 in the intermediary plate 16 are easily performed, without appreciable influence on the traditional mode of operation and construction of the steering arrangement.
• the sensor 21 can, for example, be a capacitive, inductive or optically working sensor.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Steering Control In Accordance With Driving Conditions (AREA)
• Steering Controls (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=7869858

Family Applications (1)

Country Status (3)

Families Citing this family (3)

Citations (2)

• 1998
  • 1998-06-04 DE DE1998124926 patent/DE19824926C2/de not_active Expired - Fee Related
• 1999
  • 1999-06-02 AU AU38114/99A patent/AU3811499A/en not_active Abandoned
  • 1999-06-02 WO PCT/DK1999/000292 patent/WO1999062754A1/en active Application Filing

Patent Citations (2)

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