Automobile plate spring guide arm

Abstract

The invention provides an automobile plate spring guide arm. A curled lug is arranged upwards at one end of a flat and straight plate spring. The automobile plate spring guide arm is characterized in that a Z-shaped plate spring is arranged downwards at the other end of the flat and straight plate spring and side edges are bent from the bottom edge to the side faces of the Z-shaped plate spring; the side edges are arranged on the two sides of the bottom edge of the Z-shaped plate spring; a supporting arm and the flat and straight plate spring are perpendicular to the bottom edge of the Z-shaped plate spring; and the included angle formed by each side edge and the bottom edge of the Z-shaped plate spring ranges from 30 degrees to 50 degrees and the distance between an air bag installation center position on each side edge and the center of the supporting arm is not larger than 120 mm. By the adoption of the automobile plate spring guide arm, the beneficial effects of the flat and straight plate spring and Z-shaped and side bent type plate spring guide arms are combined, the problems existing in air spring design height and transverse arrangement space are well solved, the mechanical characteristic of a spring steel material is brought into full play, a composite air suspension structure is simplified, and the requirement for the low weight of a whole automobile is met; and the composite air suspension structure is better optimized, the number of parts is reduced, and the requirement for the low weight design of the whole automobile is met.

Description

Technical field [0001] The invention relates to automobile parts, in particular to an automobile leaf spring guide arm. Background technique [0002] The leaf spring guide arm mainly plays the role of guiding and part of the bearing in the composite air suspension, and most of them adopt a single-piece or two-piece combined structure. [0003] The front end structure of the main piece is roughly the same, that is, the steel plate is rolled at the front end to install rubber bushings to realize the articulation with the frame, the middle part is fixedly connected to the drive axle by bolts, and the rear end (extending the drive axle part) Mainly used as an installation platform for air springs. Since the suspension design is closely related to the layout of the vehicle, the rear end structure of the main piece is mainly determined by the air spring load capacity and its layout space. [0004] At present, there are three common structures at the rear end of the main plate of the leaf...

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Problems solved by technology

[0007] 3. Although the side-curved leaf spring guide arm solves the problem of the lateral spacing of the air spring, the airbag can be directly located on the upper end of the side-curved part of the main piece, but in order to meet the design height requirements of the airbag, the guide arm can only be fixed at the lower end of the axle , resulting in the hinged bracket of the guide arm roll ear end and the frame having to be enlarged, and its stress conditions are not ideal, which increases the manufacturing cost

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