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Composite material automobile threshold and preparation method thereof

A composite material and threshold technology, applied in the direction of vehicle parts, upper structure, upper structure sub-assembly, etc., can solve the problems of high manufacturing cost, large intrusion, technical difficulties in process methods and connection schemes, and achieve process freedom High, realizable, improved crash performance and lightweight effect

Active Publication Date: 2022-04-12
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]The traditional car door sills are mostly made of metal materials. Under the fixed energy absorption, the intrusion is relatively large, and the lightweight effect is not good
Applying metal materials and continuous fiber composite materials to the threshold at the same time can achieve double improvement in crash performance and lightweight effect, but the process method and connection scheme are technical difficulties and the manufacturing cost is high

Method used

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  • Composite material automobile threshold and preparation method thereof
  • Composite material automobile threshold and preparation method thereof
  • Composite material automobile threshold and preparation method thereof

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specific Embodiment approach

[0041] In order to clearly and completely describe the technical solution of the present invention and its specific working process, in conjunction with the accompanying drawings, the specific implementation of the present invention is as follows:

[0042] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise specified limit. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

[0043] In the present i...

Embodiment 2

[0053] like figure 1 and figure 2 As shown, this embodiment provides a composite material automobile door sill, which can achieve better side impact performance of the vehicle body, and at the same time has a good lightweight effect and low manufacturing cost, including the outer panel 1, the inner panel 2, the inner panel The reinforcement plate 3 and the reinforcement beam 4, the outer panel 1 and the inner panel 2 are enclosed to form a threshold beam with a hollow cavity inside, the inner panel reinforcement plate 3 and the reinforcement beam 4 are arranged in the cavity, and the inner panel reinforcement plate 3 is tightly Paste the reinforcing beam 4, the reinforcing beam 4 is composed of an outer tube 41 and a core tube bundle, the core tube bundle is composed of a plurality of core tubes with different or the same cross-sectional shape, the core tube bundle is located in the outer tube 41, and the core tube bundle The outer surface is in close contact with the inner ...

Embodiment 3

[0056] This embodiment provides a method for preparing a composite automobile door sill, comprising the following steps:

[0057] Step S1: preparing outer panels, inner panels and inner panel reinforcing panels;

[0058] Step S2: preparing a core tube of metal material and a core tube of continuous fiber composite material;

[0059] Step S3: preparing a core tube bundle;

[0060] Structural adhesive is applied to the two bonding surfaces of each core tube, and then the core tubes are combined and fixed together according to the set arrangement using fixtures, and then according to the characteristics of the selected structural adhesive, normal temperature or high temperature solidified to prepare a core tube bundle;

[0061] Step S4: preparing a reinforcing beam;

[0062] Using the core tube bundle in step S3 as the mandrel, using winding equipment, impregnating the continuous fiber bundle or continuous fiber tape with resin, and then winding on the surface of the core tube...

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Abstract

The invention discloses a composite material automobile doorsill, and belongs to the technical field of automobile bodies, the composite material automobile doorsill comprises an outer plate, an inner plate, an inner plate reinforcing plate and a reinforcing beam, the outer plate and the inner plate enclose to form a doorsill beam with a hollow cavity inside, the inner plate reinforcing plate and the reinforcing beam are arranged in the cavity, the inner plate reinforcing plate is tightly attached to the reinforcing beam, and the reinforcing beam is tightly attached to the inner plate reinforcing plate. The reinforcing beam is composed of an outer tube and a core tube bundle, the core tube bundle is formed by combining a plurality of core tubes with different or same section shapes, the core tube bundle is located in the outer tube, and the outer surface of the core tube bundle is tightly attached to the inner surface of the outer tube. According to the composite material doorsill, the core tube bundle in the stiffening beam is formed by combining the core tubes which are made of different materials and have different sections, so that the performance is synergistically exerted through different material characteristics and structural characteristics, and the customized design of the performance can be realized; the high strength of the continuous fiber composite material and the deformation energy absorption of the metal material are fully exerted, and compared with a traditional metal threshold, the collision performance and the light weight effect can be improved.

Description

technical field [0001] The invention belongs to the technical field of automobile bodies, and in particular relates to a composite material automobile threshold and a preparation method thereof. Background technique [0002] Automobile lightweight is one of the important ways to save energy and reduce emissions, which creates a greater demand for the application of lightweight materials. At the same time, with the increasingly stringent collision regulations, the requirements for automobile collision safety are also increasing. The car door sill can effectively resist deformation in side collision conditions and reduce the injury of occupants in the car. [0003] Traditional car door sills are mostly made of metal materials, and under fixed energy absorption, the intrusion is relatively large, and the weight reduction effect is not good. Applying metal materials and continuous fiber composite materials to the threshold at the same time can achieve double improvement in cra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D25/20B29C53/60B29C70/52B29C65/02
Inventor 方程王昌斌王雪金科李菁华
Owner CHINA FIRST AUTOMOBILE
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