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Gradient stiffness leaf springs, leaf spring suspension systems and vehicles

A leaf spring and rigidity technology, applied to suspensions, elastic suspensions, vehicle components, etc., can solve problems such as large mass and increased vehicle energy consumption

Active Publication Date: 2019-03-22
BEIQI FOTON MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing gradient stiffness leaf springs are made of leaf springs, which have a large mass and increase vehicle energy consumption

Method used

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  • Gradient stiffness leaf springs, leaf spring suspension systems and vehicles
  • Gradient stiffness leaf springs, leaf spring suspension systems and vehicles
  • Gradient stiffness leaf springs, leaf spring suspension systems and vehicles

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Embodiment Construction

[0037] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0038] In this disclosure, unless stated otherwise, the used orientation words such as "up, down, left, right" are usually relative to the direction of the drawing of the drawings, specifically, "upper" refers to Above the drawing, "below" refers to below the drawing, "left" refers to the left of the drawing, and "right" refers to the right of the drawing. In addition, the "distal end and proximal end" in this article are relative to the root of the leaf spring with gradual stiffness. Specifically, the root of the leaf spring with gradual stiffness is the proximal end, while the root far away from the leaf spring with gradual stiffness is the distal end. . ...

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Abstract

The invention relates to a leaf spring with gradually-changed rigidity, a leaf spring suspension system and a vehicle. The leaf spring with the gradually-changed rigidity comprises a main spring and an auxiliary spring located under the main spring, wherein the main spring comprises a spring steel piece and a first main reed stacked on the lower surface of the spring steel piece, the first main reed is made of a fiber-reinforced first composite material, a first gap is formed between the lower surface of the spring steel piece and the upper surface of the first main reed. According to the leaf spring with the gradually-changed rigidity, the leaf spring suspension system and the vehicle, loads in all directions can be borne due to the fact that the spring steel piece has the characteristic of isotropy, the longitudinal force borne by the leaf spring with gradually-changed rigidity in the working process can be transmitted and shared to the maximum extent, and the reliability of the leaf spring with gradually-changed rigidity is improved; and the composite material has the advantages that the weight is light, elastic strain is high, the strain ratio is high, the fatigue life is long, the installation fracture is good, the anisotropy of the fiber composite material is utilized so that the device can only bear vertical force, the stress state is simple, and therefore the fatigue life of the composite material is prolonged, and the safety performance of the composite material is improved.

Description

technical field [0001] The present disclosure relates to the field of vehicle components, and in particular, to a leaf spring with gradual stiffness, a leaf spring suspension system and a vehicle. Background technique [0002] At present, gradient stiffness leaf springs are generally made of metal materials, in which multiple main reeds with different structures are collectively called the main spring, and the number of main reeds can be any value between 2-20. The sub-reeds together are called sub-reeds, and the number of sub-reeds can be any value between 1-10. Multiple main reeds and multiple auxiliary reeds are fixed together by fasteners. The curvature of the main reed is greater than that of the auxiliary spring. When working, the curvature of the main reed begins to decrease, and the distance between the main reed and the auxiliary reed The meshing surface begins to increase gradually, so that the stiffness of the whole spring gradually increases. [0003] Most of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F1/18F16F1/20F16F3/02B60G11/02
CPCB60G11/02F16F1/182F16F1/185F16F1/20F16F3/023
Inventor 张子正刘知汉孙松红庞旭
Owner BEIQI FOTON MOTOR CO LTD
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