Anti-roll bar with active adjusting function for self-generating new energy vehicles

Abstract

The invention specifically relates to an anti-roll bar for a self-generating new energy vehicle with an active adjustment function, which has precise adjustment and fast adjustment speed. The anti-roll bar includes a torsion bar horizontally arranged below the vehicle frame along the transverse direction of the vehicle. The torsion bar includes a central connecting cylinder, and the two ends of the central connecting cylinder are respectively sleeved together with one end of a connecting torsion bar. The central connecting cylinder slides in the axial direction and can rotate together with the central connecting cylinder. The two ends of the force transmission block are respectively in contact with the ends of a connecting torsion bar; the other end of the connecting torsion bar passes through the connecting The side at one end of the arm; the torsional rigidity of the connecting torsion bar can be greatly adjusted in a short time, greatly improving the active adaptability of the anti-roll bar.

Description

technical field [0001] The invention relates to the technical field of automobile suspension, in particular to an anti-roll bar for a self-generating new energy automobile with an active adjustment function. Background technique [0002] The anti-roll bar is an important part of the independent suspension system of the automobile. It is generally installed on the front or rear axle of the automobile and connected to the left and right suspensions. Elastic torsion bar, the two ends of the torsion bar are connected with the suspension arm through the connecting arm, the torsion bar and the connecting arm form a U-shaped structure, when the body only moves vertically, the deformation of the suspension on both sides is the same, and the anti-roll bar does not work . When the body rolls, the suspension on both sides jumps inconsistently, the anti-roll bar twists, and the elastic force of the bar becomes the resistance to the continued roll of the body, playing the role of anti-r...

AI Technical Summary

Problems solved by technology

[0003] In order to reduce the impact force when the wheel jumps vertically, it is generally desired to reduce the unsprung mass of the car as much as possible, but the torsion bar in the middle of the anti-roll bar is generally made of solid spring steel material, which is heavy and consumes a lot of materials. The bending moment transmitted by the connecting arm at the end is relatively large, so the connecting arm is generally made of cast iron or cast steel, and its cross-sectional size and weight are also relatively large. In order to reduce the unsprung mass, the weight of the anti-roll bar should be as small as possible

[0004] When the car is running normally, the amplitude of the vertical vibration of the wheel changes greatly. It is hoped that the torsional stiffness of the anti-roll bar will be low when the vertical amplitude of the wheel is small, so that the effect of the vertical spring and shock absorber can be fully exerted and the ride comfort can be improved. When the vertical amplitude of the wheel is large, it is desirable that the torsional stiffness of the anti-roll bar is high, which can improve the driving stability of the car, but the current anti-roll bar torsional stiffness is often a fixed value, which cannot take into account both situations at the same time. No. CN201511025991.X is an electronically controlled separated active anti-roll bar, including a left torsion bar, a right torsion bar, an active control module, a relative displacement sensor and a steering wheel angle sensor; wherein the active control module includes an ECU, a torque motor , left driving spur gear, right driving spur gear, left driving bevel gear, right driving bevel gear, left driven bevel gear, right driven bevel gear, left torsion bar gear, right torsion bar gear, planetary gear, left electromagnetic clutch, The planetary gear electromagnetic clutch and the right electromagnetic clutch can adjust the stiffness of the anti-roll bar through the active control module, but the structure of this patent is complicated and there are many parts, which leads to high cost of the anti-roll bar and is difficult to be widely used. The adjustment of the adjustment module requires the rotation of the spur gear and the bevel gear to change the stiffness of the anti-roll bar after the controller sends the adjustment command. The application of the anti-roll bar, and the torsional stiffness of the torsion bar changes gradually during adjustment, and cannot be changed substantially in a short period of time.

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