Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Tubular fiber structure and fiber reinforced composite material

a technology of tubular fiber which is applied in the field of tubular fiber structure and fiber reinforced composite material, can solve the problems of reducing the strength, reducing slit cracks, so as to reduce the energy absorption efficiency, reduce the strength, and simplify the coupling structure

Inactive Publication Date: 2015-10-22
TOYOTA IND CORP
View PDF13 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a structure for an energy absorption member used in vehicles. When applying this structure to fiber-reinforced plastic, cracks may form from slits cut into the ends of the tubular braid texture and reduce energy absorption efficiency. To address this, the patent text discusses an alternative structure that includes a tubular fiber structure with flanges that are shaped at the region of the end of the fabric base material. This alternative structure helps prevent cracks and ensures the necessary strength for use as a reinforcement for a tubular fiber reinforced composite material that can easily be coupled to another member. Overall, the patent text provides a solution for improving the coupling structure and enhancing the energy absorption efficiency of the energy absorption member in vehicles.

Problems solved by technology

Thus, when using the structure of patent document 1 as a reinforcement for fiber-reinforced plastic to form the energy absorption member, cracks may form from the slits and lower the energy absorption efficiency.
This lowers the strength.
This results in a complicated manufacturing process.
Thus, when manufacturing a composite material, it is difficult to lay out the threads, and it is difficult to increase the strength.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Tubular fiber structure and fiber reinforced composite material
  • Tubular fiber structure and fiber reinforced composite material
  • Tubular fiber structure and fiber reinforced composite material

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0043]A first embodiment of a tubular fiber structure will now be described with reference to FIGS. 1 to 4.

[0044]Referring to FIG. 1, a tubular fiber structure 10 is formed by rolling a sheet of a fabric base material 11 and shaping the rolled fabric base material 11. The tubular fiber structure 10 includes a tube 12 and a flange 13, which is located on at least one side (i.e., one axial end) of the tube 12. In this embodiment, the tube 12, which is tubular and has a circular cross-section, includes the flange 13 at two sides (two axial ends). The “fabric base material” is formed by threads laid out to extend in at least two directions and includes at least a portion that is woven from threads (interweaved portion).

[0045]Referring to FIG. 2, the fabric base material 11 includes a woven texture 14 and a non-woven texture 15. As shown in FIG. 3A, the fabric base material 11 of this embodiment includes the woven texture 14 at the two widthwise sides of the fabric base material 11 and t...

second embodiment

[0061]A second embodiment will now be described with reference to FIGS. 5 to 7. This embodiment differs from the tubular fiber structure 10 of the first embodiment in that a reinforcement portion 18 formed by a fabric base material 21 is arranged at the inner side of the tube 12. Otherwise, the structure is basically the same as the tubular fiber structure 10 of the first embodiment. Same reference numerals are given to those components that are the same as the corresponding components of the first embodiment. Such components will not be described in detail.

[0062]As shown in FIG. 5, the fabric base material 21 of the reinforcement portion 18 is continuous with a rolled inner end 11d of the tube-corresponding portion 11a, which corresponds to the tube 12, in the fabric base material 11 forming the tube 12 and the flanges 13. The fabric base material 21 is arranged so as to extend in the radial direction of the tube 12. The fabric base material 21 includes a fixed portion 21a, which i...

third embodiment

[0070]A third embodiment will now be described with reference to FIGS. 8 to 10. This embodiment differs from the first embodiment in that multiple layers of the fabric base material 11 are stacked and sewn together with stitching threads 22 so that the tube 12 is three-dimensional. Same reference numerals are given to those components that are the same as the corresponding components of the first embodiment. Such components will not be described in detail.

[0071]As shown in FIGS. 8 and 9, the overlapping layers of the fabric base material 11 at the tube 12 are lock-stitched with the stitching threads 22 so that the tubular fiber structure 10 is three-dimensional. As shown in FIG. 9, the stitching threads 22 include a piercing thread 22a, which is pierced through and returned from portions where the fabric base material 11 is overlapped in layers, and a locking thread 22b, which locks the piercing thread 22a to the fabric base material 11 at portions of the fabric base material 11 whe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
anglesaaaaaaaaaa
anglesaaaaaaaaaa
anglesaaaaaaaaaa
Login to View More

Abstract

A tubular fiber structure, which includes a tubular section and a flange section that is on at least one end of the tubular section and which is formed by shaping a wound fabric base material.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a National Stage of International Application No. PCT / JP2013 / 078764, filed Oct. 24, 2013, claiming priority based on Japanese Patent Application No. 2012-261056, filed Nov. 29, 2012, the contents of all of which are incorporated herein by reference in their entirety.FIELD OF THE INVENTION[0002]The technology of the present disclosure relates to a tubular fiber structure and a fiber reinforced composite material that uses the tubular fiber structure as a reinforcement.BACKGROUND OF THE INVENTION[0003]A typical automobile includes bumpers secured to the front and rear of the vehicle body to absorb impact energy of a collision and protect the vehicle body and the vehicle occupants during a collision. A bumper needs to absorb, in an irreversible manner, the energy of the load that is produced when the automobile collides with an obstacle. There are structures that support the bumper with a substantially tubular energy abso...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): D03D3/02
CPCD03D3/02B60R19/03D03D1/00D10B2505/02B32B1/08D03D13/004B32B5/022B32B5/024B32B5/06B32B5/22B32B5/26B32B2250/20B32B2260/021B32B2260/046B32B2262/02B32B2262/0269B32B2262/10B32B2262/101B32B2262/103B32B2262/105B32B2262/106B32B2307/50B32B2307/56B32B2597/00B32B2605/00
Inventor HORI, FUJIOKAMIYA, RYUTA
Owner TOYOTA IND CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com