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Spring body structure of composite material plate spring and production method thereof and composite material plate spring

A composite material board and production method technology, applied to other household appliances, household appliances, household components, etc., can solve the problems of high thickness of the spring body and difficult exhaust, reduce the thickness, reduce the amount of machining, and improve product qualification rate effect

Pending Publication Date: 2018-12-25
康得复合材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a spring body structure of a composite material leaf spring, which can solve the problems in the prior art that the thickness of the spring body of the composite material leaf spring is too high and the exhaust is difficult during processing

Method used

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  • Spring body structure of composite material plate spring and production method thereof and composite material plate spring
  • Spring body structure of composite material plate spring and production method thereof and composite material plate spring
  • Spring body structure of composite material plate spring and production method thereof and composite material plate spring

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The glass fiber prepreg is blanked, cut into a sheet structure, put into the preforming mold layer by layer according to the designed layering sequence, and pre-compacted to form a preform; put the obtained preform into Put it into the spring body mold, close the mold and pressurize and solidify; after demoulding, remove the margin area at the center position of the spring body body 1 by machining to obtain a spring body structure in which the boss 2 is arranged at the center position of the spring body body 1; Wherein, the boss is formed by resin flowing into the flow channel of the mould, and the position of the flow channel is set in the middle of the spring body.

Embodiment 2

[0035] Such as figure 1 and figure 2 As shown, in a specific embodiment, the spring body structure of a composite material leaf spring provided by the present invention includes: a spring body body 1 and a boss 2; wherein, the boss 2 is arranged on the spring body body 1 central location. Specifically, the thickness of the boss 2 accounts for 1 / 9 of the thickness of the spring body; the length of the boss is 1.5 mm; the spring body structure is mainly made of glass fiber reinforced composite material.

Embodiment 3

[0037] Such as Figure 4 As shown, in a specific embodiment, a composite material leaf spring provided by the present invention includes: a spring body structure 3 and a metal joint 4 ; wherein, the metal joint 4 is fixed at both ends of the spring body structure 3 .

[0038] The spring body structure 3 of the composite material leaf spring and the metal joint 4 together constitute the leaf spring of the automobile suspension. The leaf spring is an elastic element mainly connecting the frame and the axle, and bears all the load of the frame; during the driving process of the car, the composite material The stress state of the spring body structure 3 of the leaf spring can be equivalent to the bending of the cantilever beam. When the cantilever beam is bent and stressed, the internal stress distribution is as follows: image 3 As shown, where M is the bending moment borne by the structure, σ is the stress in the structure, and X represents the central axis of the structure.

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Abstract

The invention discloses a spring body structure of a composite material plate spring and a production method thereof and the composite material plate spring. The spring body structure of the compositematerial plate spring comprises a spring body and a boss; and the boss is arranged at the central position of the spring body, wherein the thickness of the boss accounts for 1 / 10-1 / 8 of that of the spring body; and the length of the boss is 1-2 mm. Compared with an integrated spring body, the boss in the spring body structure has the advantages that the thickness of the boss is smaller, the thickness of the spring body is reduced, the mechanical machining amount of the spring body is reduced, the machining cost of the spring body is reduced, and the boss is beneficial for mass application ofthe composite material plate spring; the spring body of the composite material plate spring can be enabled to exhaust air easily during being molded, air bubbles are sufficiently discharged without causing scrapping of a spring body part; the stress level in the boss position is low and less than 80 MPa; the pure-resin boss is prevented from being damaged and falling off in the using process; andproblems that the thickness of the spring body of the composite material plate spring is too high and the air exhaust is difficult during machining in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of automobile suspension, in particular to a spring body structure of a composite material leaf spring, a production method thereof and a composite material leaf spring. Background technique [0002] At present, composite material leaf springs are used to replace traditional leaf springs, mainly utilizing the long fatigue life of composite materials, the fatigue life is increased by 3-5 times, and at the same time, the weight can be reduced by more than 60%, which can effectively reduce the weight of the suspension, reduce fuel consumption and Emissions. [0003] However, the spring body structure of a composite material leaf spring is used to replace the original steel plate multi-leaf reed structure. Since the elastic modulus of the composite material is smaller than that of the steel plate, under the condition of equal stiffness, the spring body thickness of the composite material leaf spring The leaf sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/54B29L31/30
CPCB29C70/34B29C70/545B29L2031/721
Inventor 陈修贤何鹏谭尊有高烺张肖肖
Owner 康得复合材料有限责任公司