Seat backrest framework made of composite material

A composite material and seat back technology, applied in the direction of the seat frame, etc., can solve the problems such as not easy to form and process, easy to be damaged, etc., and achieve the effect of weight reduction, high mechanical performance, and convenient shape

Pending Publication Date: 2019-07-02
GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Continuous fiber reinforced thermoplastic resin is composed of fiber and resin. Most thermoplastic resins have low tensile

Method used

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  • Seat backrest framework made of composite material
  • Seat backrest framework made of composite material
  • Seat backrest framework made of composite material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0059] The method for preparing the composite seat back frame of the present invention includes the following steps:

[0060] 1) Ingredients: take one or more of polyolefin resin, thermoplastic polyester, polyamide, polycarbonate, other general resins or high-performance engineering plastics in proportion to continuous ultra-high-strength glass fiber and silane coupling agent by mass (40:50:1) with good ingredients.

[0061] 2) Plate making: use conventional technology to make unidirectional continuous glass fiber reinforced thermoplastic resin prepreg sheets; then select the appropriate number of layers of unidirectional continuous glass fiber reinforced thermoplastic resin prepreg sheets according to the required sheet thickness t=25mm. Form continuous glass fiber reinforced thermoplastic composite board.

[0062] 3) Cutting typesetting: Use 3D modeling software to expand the product's space surface into a plane surface, and the expansion algorithm adopts the built-in algorithm of...

Example Embodiment

[0072] Example 1: Mounting hole parameters provide excellent pulling force and fixation

[0073] Design composite seat back frame S=20cm; M=16cm; β=60°; the height of the concave arc segment and the convex arc segment is 3:5; the height of the composite backboard H: 100cm, the widest part of the composite backboard W: 65cm. The backrest frame is formed by hot-pressing composite of 8 layers of unidirectional continuous glass fiber reinforced thermoplastic resin prepreg; two mounting holes with diameter d1=d2=8mm; i is equal to 20mm; ii=36mm; t=25mm.

[0074] The backrest frame made according to the above parameters is tested for the strength of the backrest under the test conditions of the GB13057-2003 standard. According to the test height H1 (500mm) and H2 (750mm) required by the standard, the two test tensions are F1 = 4100N, F2 = 1425N, the corresponding displacement of the two test points x1=125mm, x2=60mm.

Example Embodiment

[0075] Example 2:

[0076] Design composite seat back frame S=20cm; M=16cm; β=60°; the height of the concave arc segment and the convex arc segment is 3:5; the height of the composite backboard H: 100cm, the widest part of the composite backboard W: 65cm. The backrest frame is formed by hot-pressing composite of 8 layers of unidirectional continuous glass fiber reinforced thermoplastic resin prepreg; two mounting holes with diameter d1=d2=11mm; ii=60mm; i is equal to 35mm; t=25mm.

[0077] The backrest frame made according to the above parameters is tested for the strength of the backrest under the test conditions of the GB13057-2003 standard. According to the test height H1 (500mm) and H2 (750mm) required by the standard, the two test tensions are F1 = 3950N, F2 = 1308N, the corresponding displacement of the two test points x1=230mm, x2=85mm.

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Abstract

The invention discloses a modeling structure of a seat backrest framework adopting continuous glass fiber reinforced composite material plates. The modeling structure defines a composite back plate ofwhich the seat composite material backrest framework should be divided into a passenger supporting area, a transition wing plate of a transition connecting area and a mounting plane. The mounting hole parameters of a mounting plane are provided. The trepanning process parameters of the seat backrest framework of the continuous glass fiber reinforced composite material plates are adopted. According to the perforating process, the perforating diameter range, the range of the distances between holes, the range of the distances between the holes and the edge of the framework and the selection range of the thickness of the framework and the thickness of a plate are specified, so that the composite framework adopting the perforating process can be in conventional bolt connection with a metal piece. The better connection strength can be achieved.

Description

technical field [0001] The invention relates to the technical field of vehicle accessories, in particular to a composite seat back frame. Background technique [0002] The car seat back frame serves as a core vehicle interior accessory. At present, in many applications of vehicle seats, the backrest frame of the seat is a frame structure made of metal, which is heavy and greatly increases the overall weight of the vehicle. At the same time, because the frame structure cannot be directly applied, it must be used in The frame structure is coated with sponge to improve the comfort of passengers; and because the backrest frame is a metal frame structure, when the rear passenger hits the back of the chair in front, due to the characteristics of the frame structure, it absorbs the impact force. The energy area is small, and the impact force cannot be dispersed, so that the passengers in the front seat are vulnerable to concentrated very large impact force at the head, neck and wa...

Claims

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Application Information

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IPC IPC(8): B60N2/68
CPCB60N2/68
Inventor 黄险波刘万光范欣愉陈大华熊鑫李晓拓宋威
Owner GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV
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