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A kind of composite leaf spring with hollow structure

A composite material plate and leaf spring technology, which is applied in the field of leaf spring manufacturing, can solve the problems of increasing the types and costs of mold development, increasing product development cycles, and poor mold versatility, so as to reduce mold development costs and save product development. The effect of cycle and mold versatility

Active Publication Date: 2021-09-17
东风汽车底盘系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the manufacturing process, in order to realize the variable cross-section structure, the mold cavity will be designed to match the cross-section of the product, which leads to the lack of versatility of the mold. When producing serialized multi-variety leaf springs, it is bound to increase the development of molds. types and costs, increasing the product development cycle

Method used

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  • A kind of composite leaf spring with hollow structure
  • A kind of composite leaf spring with hollow structure
  • A kind of composite leaf spring with hollow structure

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Experimental program
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Effect test

Embodiment Construction

[0034] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] like figure 1 , The present embodiment provides a composite material leaf spring having a hollow structure, a prepreg resin matrix composite material reinforced by layers of fiber by cropping, compression molding the overlay, leaf springs, etc. for the thickness, width, etc., the length of a plate-like structure, the inner cavity is provided with two leaf springs distributed symmetrically 1.

[0036] The leaf spring is a leaf spring prepreg were uppermost 2 downwards, cavity length graded layers of prepreg 3, the cavities 4 prepreg layers fixed length, the cavity length gradient complete prepreg prepreg layers complete layers 3 and 2 prepreg layers, the prepreg layer comprising a complete multilayer prepreg is not cut through the hollow prepreg; length of the cavity and the cavity graded layers of prepreg fixed length prepreg layer comprises a multi...

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Abstract

The invention provides a composite material leaf spring with a hollow structure, which can not only realize the consistency of the outer dimensions of the leaf spring, but also ensure that the stiffness and strength of the leaf spring meet the requirements, and improve the versatility of the composite material leaf spring mold. The technical solution is: the leaf spring is formed by cutting and laminating the prepreg material of the multi-layer composite material, and the leaf spring is a plate-like structure with equal thickness and width. cavity.

Description

Technical field [0001] The present invention relates to the technical field of manufacturing a leaf spring, in particular to a composite material leaf spring having a hollow structure. Background technique [0002] Fiber reinforced resin matrix composite leaf spring attenuated weight, ride comfort, noise resistance, fatigue resistance with regard obvious advantages over the leaf spring, so until the more widely used in the automotive field. Currently producing a composite leaf spring production process is molded, wrapped, like the high-pressure RTM method, molding method has significant advantages in cost, molding quality, production efficiency, etc., and therefore the leaf springs used in the manufacture of composite materials most widely used. [0003] Currently designed leaf spring is substantially variable cross-section design, the desired strength of the leaf springs, the weight can be reduced while the rigidity of the leaf spring. For example, US4557500B discloses a leaf sp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F1/368F16F1/373G06F30/17G06F119/14
CPCF16F1/368F16F1/3737G06F30/17G06F2119/14
Inventor 王海庆石朝阳何云江王亚荣江文进
Owner 东风汽车底盘系统有限公司