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Dual-mode rear wheel active steering device

一种后轮主动转向、双模式的技术，应用在齿轮传动装置、传动装置、电动转向机构等方向，能够解决破坏左右后轮协调运动的规律、成本高昂、执行器多等问题，达到稳定可靠机械连接、降低工作能耗、体积小的效果

Active Publication Date: 2019-08-27
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Relatively speaking, it is easier to rotate the rear wheels in different directions with dual actuators, but the number of actuators is too high, the cost is high, and the reliability is poor. Once the motor actuator on one side is damaged, the law of coordinated movement of the left and right rear wheels will be destroyed, resulting in danger. accident happened

Method used

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  • Dual-mode rear wheel active steering device

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Embodiment Construction

[0076] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0077] Such as figure 1 As shown, it is a schematic diagram of the layout of the novel dual-mode rear wheel active steering device on the rear axle according to the present invention. The new dual-mode rear wheel active steering device of the present invention mainly includes: a steering motor (servo motor 110), a transmission matching gear set, a mode switching assembly, a planetary gear coupling mechanism, an outer casing 500, a motion conversion mechanism, and a steering cross Pull rod 750, rear wheel 780 etc. Wherein, the steering motor is horizontally fixed on the rear axle sub-frame 770, and its axis is perpendicular to the longitudinal axis of the vehicle. The steering motor and the outer casing 500 are arranged in sequence along the horizontal direction, and the out...

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Abstract

The invention discloses a dual-mode rear wheel active steering device. The dual-mode rear wheel active steering device comprises a steering motor, a main shaft and a mode switching assembly, wherein an input gear is arranged at the output end of the steering motor; one end of the main shaft drives the steering motion of a first rear wheel through a two-stage gear transmission system and a first rear wheel motion conversion mechanism, and the other end of the main shaft drives the steering motion of a second rear wheel through a planetary gear coupling mechanism and a second rear wheel motion conversion mechanism; the main shaft is provided with an intermediate gear, a transmission gear and a sun gear of the planetary gear coupling mechanism, and the intermediate gear meshes with the inputgear for transmission; and a mode switching input gear meshing with transmission gear is arranged at one end of the mode switching assembly, a mode switching output gear meshing with an inner gear ring of the planetary gear coupling mechanism is arranged at the other end of the mode switching assembly and is used for selectively driving or locking the inner ring of the planetary gear coupling mechanism by an electromagnetic clutch device, and the steering motor can drive the movement of a left wheel and a right wheel in the same direction in an uniform amplitude mode or the steering movement in the opposite direction by properly designing the gear speed ratio.

Description

technical field [0001] The invention relates to the field of automobile steering safety, and more specifically, the invention relates to a dual-mode rear wheel active steering device. Background technique [0002] As an auxiliary steering technology, rear wheel steering can improve steering flexibility and driving stability to a certain extent. The rear wheel follow-up steering technology represented by Citroen's PSS can passively meet the driver's requirements for steering assistance to a limited extent, but it is prone to wear of the connecting parts and the controllability is not high. In contrast, active rear wheel steering can make up for such shortcomings. Rear wheel active steering technology has very obvious advantages, so that the car has the characteristics of suppressing understeer at low speeds, increasing the steering yaw gain, and improving the flexibility of steering in narrow spaces; it can suppress excessive steering characteristics at high speeds , to red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D3/02B62D17/00B60K17/04
CPCB62D5/0421B62D5/043B62D3/02B62D17/00B60K17/046B62D7/146B62D7/1581B60G7/006B62D7/09B60G2500/40B60G2204/4191F16H2200/0021F16H3/721F16H2200/2007B60K17/30B60Y2400/84B62D7/20B60K17/24B62D5/06B62D7/16B62D7/18F16H3/62F16H37/042F16H2200/0034
Inventor 王军年颜庭旭郭德东王凯
Owner JILIN UNIV
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