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1. (WO2018201449) LEAF SPRING ASSEMBLY AND VEHICLE SUSPENSION DEVICE

Pub. No.:    WO/2018/201449    International Application No.:    PCT/CN2017/083228
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Sat May 06 01:59:59 CEST 2017
IPC: B60G 11/02
Applicants: PLOYMER SCIENCE (SHENZHEN) NEW MATERIALS CO., LTD.
深圳市科聚新材料有限公司
Inventors: CHANG, Jianfei
常健飞
Title: LEAF SPRING ASSEMBLY AND VEHICLE SUSPENSION DEVICE
Abstract:
A leaf spring assembly (10) for a vehicle suspension device, comprising a first leaf spring (11), a second leaf spring (12) disposed at a bottom side of the first leaf spring, and a connecting mechanism (13) configured to connect the first leaf spring and the second leaf spring; gaps are formed between the first leaf spring and two ends of the second leaf spring; and the length of the second leaf spring is smaller than that of the first leaf spring. Further provided is a vehicle suspension device, comprising a pair of lifting lugs (18) and the leaf spring assembly (10), wherein two ends of the first leaf spring are fixedly connected with the pair of lifting lugs respectively. Because the leaf spring assembly and the vehicle suspension device adopt a combination of the first leaf spring and the second leaf spring, the stiffness of the leaf spring assembly can change along with the load change of a vehicle, and thus the technical problem that the stiffness of existing leaf springs cannot change along with the load change is solved; meanwhile, the specific stiffness, specific strength and corrosion resistance of vehicle suspension are improved because the first leaf spring and the second leaf spring are made of a fiber-reinforced plastics.