Unlock instant, AI-driven research and patent intelligence for your innovation.

A self-destructing plastic energy-absorbing structure and its application

An energy-absorbing structure, self-destructing technology, applied in bicycle racks, bicycle accessories, transportation and packaging, etc., can solve the problems of weak protective effect, uncertainty of damage area, increase of uncertain factors, etc., to improve production efficiency , the effect of saving labor costs

Active Publication Date: 2016-12-07
HEFEI GENIUS NEW MATERIALS
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above structure has a good protective effect when it is under pressure, and can absorb a large amount of energy in the form of buckling instability of the structure, and the design buckling instability stress of the component is often lower than the strength of the material; but when the component is under tension, the component’s In order for the damage to make the component stress reach and exceed the strength of the material, the required force is generally large, which makes the protective effect under tension obviously weaker than that under compression.
In addition, during the damage process of thin-walled structures, the damage area is often uncertain, which depends on the manufacturing process of the component and the location of material defects, which undoubtedly adds some uncertain factors to the design

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
  • A self-destructing plastic energy-absorbing structure and its application
  • A self-destructing plastic energy-absorbing structure and its application
  • A self-destructing plastic energy-absorbing structure and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A self-destructing plastic energy absorbing structure, its structure is as Figure 1 ~ Figure 2 As shown, the self-destructing plastic energy absorbing structure is an S-shaped tubular structure, the outer surface 1-1 of the tubular structure is a flat surface, and the inner surface of the tubular structure is composed of an inner wall 1-2 and a protrusion 1-3, The protrusions 1-3 spirally expand along the inner wall and connect the two ends of the S-shaped tube; figure 2 As shown, the cross-sectional shape of the protrusions 1-3 is semicircular, and the protrusion spacing 1-4 between adjacent protrusions 1-3 may be equal or unequal.

Embodiment 2

[0028] A plastic bicycle applying the present invention has a structure such as image 3 As shown, the front frame tube can use the present invention to design the internal structure of the tube. Using the structure of the present invention, the bicycle can be designed to have sufficient strength and rigidity under normal use, but in extreme cases, such as impact Ensure that the square convex structure 2-1 remains intact due to relatively small deformation during the impact process, and the relatively thin concave 2-2 is damaged, but the entire convex spiral connects the two ends of the pipe, and the damage will follow the concave Spiral expansion, this process will absorb a lot of energy, thereby ensuring the personal safety of the rider. The structure of the invention can be applied to the inside of other tubular parts 2-3 to protect personal safety.

Embodiment 3

[0030] A raised structure design, its structure is like Figure 4 Shown. The protrusion section 3-1 is a semi-elliptical structure, and the distance between the protrusions is equal to 3-2. The protrusion structure spirally expands and connects the two ends of the outer tubular structure. When the tubular structure is damaged, it is preferentially generated between the protrusion gap , And spiral expansion, the process can absorb a lot of energy.

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

No PUM Login to View More

Abstract

The invention relates to a self-destructing plastic energy-absorbing structure and its application. The energy-absorbing structure is a tubular structure made of engineering plastics. The outer surface of the tubular structure is a smooth curved surface. The protrusions connect the two ends of the tubular structure. The cross-section of the tubular structure can be arc-shaped, square, or polygonal, and the distance between the protrusions can be equal or different. Compared with the prior art, the structure of the present invention is flat and smooth in appearance, does not affect the appearance design of the components, can be designed into any shape according to the design requirements, and has high designability. Due to the existence of the spiral convex structure inside, the wall Thick and thin, the structure has weak and reinforced parts. When bearing the ultimate load, the weak part is damaged first, but due to the existence of the spiral convex structure, the whole is not damaged, and the structural damage will continue along the thinner part. Spiral expansion, a process that absorbs a lot of energy.

Description

Technical field [0001] The invention relates to a self-destructive energy-absorbing structure, in particular to a self-destructive plastic energy-absorbing structure and its use. Background technique [0002] Some structures will be subjected to extreme loads such as explosions, impacts, earthquakes, etc. during use. If such loads are not considered, they will cause great losses if they occur. Therefore, some structural designs need to consider these extreme load effects, that is, the structure is required to be safe under normal use, and partial damage is allowed in extreme cases but the overall integrity of the structure is guaranteed. Under the guidance of this design principle, the structure needs to have some self-destructing components to ensure that the structure will break and absorb energy under extreme loads and protect the overall integrity of the structure. [0003] At present, some self-destructive energy-absorbing components mostly adopt thin-walled forms, which util...

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 Patents(China)
IPC IPC(8): B62K19/02
Inventor 杨桂生王东孙利明
Owner HEFEI GENIUS NEW MATERIALS