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Recirculating ball power steering system with sliding joint

A technology of sliding joints and power steering, which is applied in power steering mechanisms, electric steering mechanisms, steering mechanisms, etc., and can solve problems such as inconsistent load separation

Pending Publication Date: 2022-02-01
STEERING SOLUTIONS IP HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sector gears can result in an undesirable separating load during operation because of the forces generated by one or more components connecting the driven nut to the sector gear

Method used

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  • Recirculating ball power steering system with sliding joint
  • Recirculating ball power steering system with sliding joint
  • Recirculating ball power steering system with sliding joint

Examples

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Embodiment Construction

[0014] Referring now to the drawings, in which the invention will be described with reference to specific embodiments without limiting the invention, a portion of a recirculating ball power steering system is shown. The recirculating ball power steering system disclosed herein reduces the separation load of the system by using a slip joint and a lever arm.

[0015] refer to figure 1 and image 3 , is shown a recirculating ball power steering system 10 for applying torque based on a signal to provide steering. The power steering system 10 includes a driver input 12 and an auxiliary 14 . The driver input 12 includes an input screw 18 extending along a first axis 20 and a steering shaft 16 . Auxiliary section 14 includes motor 22 , gear reduction assembly 24 , ball nut 26 and ball screw 28 , sliding joint 30 and lever arm 32 . Lever arm 32 rotates an auxiliary arm that operatively connects driver input 12 to auxiliary portion 14 . The power steering system 10 acquires a driv...

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PUM

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Abstract

A recirculating ball power steering system includes an electric motor. The system also includes a ball screw rotatably driven by the electric motor. The system further includes a ball nut translatable along the ball screw in a linear direction during rotation of the ball screw. The system yet further includes a sliding joint in sliding contact with an outer surface of the ball nut, the sliding joint moveable in a non-parallel direction relative to the linear direction of the ball nut.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application No. 63 / 057,637, filed July 28, 2020, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] The present disclosure relates to vehicle steering systems, and more particularly to recirculating ball power steering systems with slip joints. Background technique [0004] Power steering assists the driver of a vehicle in steering by adding power to that provided by the driver and reducing the effort required to manually turn the steering wheel. A typical integrated gear that may be part of such a power steering system uses hydraulic fluid to push against a rack-piston-nut that drives a sector gear and thus provides assist torque at the output shaft. The resulting torque is used to reduce the driver's effort for steering, as described above. Typically, toothed sector gears are used to transmit output torque...

Claims

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Application Information

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IPC IPC(8): B62D3/02B62D3/08B62D5/04
CPCB62D3/02B62D3/08B62D5/0421B62D5/04B62D5/0454
Inventor E·D·帕托克T·L·帕尔默C·S·帕尔默B·M·科利尔
Owner STEERING SOLUTIONS IP HLDG