阅读说明：本技术 一种多向防震的3d打印头盔吸能缓冲层 (Multidirectional shockproof 3D prints helmet energy-absorbing buffer layer ) 是由 沈炜 丁颖 姚远 王征 于 2020-05-07 设计创作，主要内容包括：本发明公开了一种多向防震的3D打印头盔吸能缓冲层,所述3D打印头盔吸能缓冲层固定于头盔外壳内侧；所述3D打印头盔吸能缓冲层整体呈头部形状,由前分片部件、后分片部件、左分片部件、右分片部件和上分片部件五个分片部件拼合而成；所述五个分片部件均包括上层单元、下层单元、贯通杆洞和若干根贯通杆,分片部件通过贯通杆穿过上层单元和下层单元上的贯通杆洞连接而成。本发明不仅能通过缓冲层两次溃缩变形充分吸收能量、延缓冲击力作用时间,以减轻头部受到的垂直冲击伤害,还可以通过缓冲层上下单元之间的错向滑动,以减轻头部与脊椎受到的旋转力的伤害,另外还具有佩戴舒适、通风良好、重量轻便、可用于个性化定制等优点。(The invention discloses a multidirectional shockproof 3D printing helmet energy absorption buffer layer, which is fixed on the inner side of a helmet shell; the energy absorption buffer layer of the 3D printing helmet is integrally in a head shape and is formed by splicing a front slicing part, a rear slicing part, a left slicing part, a right slicing part and an upper slicing part; the five slicing components comprise upper-layer units, lower-layer units, through rod holes and a plurality of through rods, and the slicing components are formed by connecting the through rods through the through rod holes in the upper-layer units and the lower-layer units. The buffer layer can fully absorb energy and delay the action time of impact force through two-time crumple deformation of the buffer layer so as to relieve the damage of the head caused by vertical impact, can relieve the damage of the head and the spine caused by the rotating force through the misdirected sliding between the upper unit and the lower unit of the buffer layer, and has the advantages of comfortable wearing, good ventilation, light weight, capability of being used for personalized customization and the like.)

1. The utility model provides a shockproof 3D of multidirectional prints helmet energy-absorbing buffer layer which characterized in that: the 3D printing helmet energy absorption buffer layer is fixed on the inner side of the helmet shell;

the energy absorption buffer layer of the 3D printing helmet is integrally in a head shape and is formed by splicing a front slicing part, a rear slicing part, a left slicing part, a right slicing part and an upper slicing part;

the five slicing components comprise an upper layer unit, a lower layer unit, a through rod hole and a plurality of through rods, and the slicing components are formed by connecting the through rods through the through rod holes in the upper layer unit and the lower layer unit;

the cross section area of the hole of the through rod hole is larger than the cross section area of the through rod, and the height of the through rod is larger than the sum of the thicknesses of the upper layer unit and the lower layer unit.

2. The multidirectional shockproof 3D printing helmet energy-absorbing cushioning layer as claimed in claim 1, wherein: the height of the through rod is larger than the sum of the thicknesses of the upper layer unit and the lower layer unit, the diameter range of the through rod is 1.5-5 mm, and the height range of the through rod is 20-30 mm.

3. The multidirectional shockproof 3D printing helmet energy-absorbing cushioning layer as claimed in claim 1, wherein: the upper layer unit and the lower layer unit are of solid structures, sheet structures, rod-shaped structures or porous structures.

4. The multidirectional shockproof 3D printing helmet energy-absorbing cushioning layer as claimed in claim 1, wherein: the raw material for 3D printing is nylon or TPU powder.

5. The multidirectional shockproof 3D printing helmet energy-absorbing buffer layer as claimed in claim 1, wherein the 3D printing is performed by S L S selective laser sintering.

6. The multidirectional shockproof 3D printing helmet energy-absorbing cushioning layer as claimed in claim 1, wherein: the 3D printed printing material comprises ink, resin, acrylic acid, polymer, thermoplastic material, thermosetting material, photo-curing material and composite material.

Technical Field

The invention belongs to the technical field of helmets, and particularly relates to a multidirectional shockproof energy-absorbing buffer layer of a 3D printing helmet.

Background

The helmet is used for reducing the head injury caused by inertia and collision in the accident. The traditional helmet is composed of a rigid outer shell, a helmet inner liner, a suspension system and the like, wherein the helmet inner liner is used as the most important energy dissipation component in the helmet and is the design key point of the impact resistance of the helmet.

When the head is impacted by the outside, the impact force can be decomposed into vertical impact force and shearing impact force, the vertical impact force causes translational acceleration of the head to cause injuries such as skull fracture and the like, and the shearing impact force causes rotational acceleration of the head to cause injuries such as spine torsion and the like. The traditional helmet lining is usually made of polystyrene (EPS) foam plastics, and when the helmet lining is impacted, the EPS foam plastics are easy to crush and deform after being subjected to high-compression collision, so that a large amount of energy is absorbed, the translation acceleration of the head is reduced, and the local strain of the skull and the brain injury are reduced. Although traditional helmet is effective in reducing the translation acceleration of head, there is more not enough in reducing the rotation acceleration ability aspect of head, and traditional EPS inside lining absorbs the collision energy better, but its sense of touch is harder, and the gas permeability is poor, and the travelling comfort is not good enough.

Disclosure of Invention

The invention aims to solve the problems in the manufacturing and using of the existing helmet liner in the background art, and provides a multidirectional shockproof 3D printing helmet energy-absorbing buffer layer.

The technical scheme adopted by the invention is as follows: the energy-absorbing buffer layer of the multidirectional shockproof 3D printing helmet is fixed on the inner side of a helmet shell;

the energy absorption buffer layer of the 3D printing helmet is integrally in a head shape and is formed by splicing a front slicing part, a rear slicing part, a left slicing part, a right slicing part and an upper slicing part;

the five slicing components comprise an upper layer unit, a lower layer unit, a through rod hole and a plurality of through rods, and the slicing components are formed by connecting the through rods through the through rod holes in the upper layer unit and the lower layer unit;

the cross section area of the hole of the through rod hole is larger than the cross section area of the through rod, and the height of the through rod is larger than the sum of the thicknesses of the upper layer unit and the lower layer unit.

Preferably, the height of the through rod is larger than the sum of the thicknesses of the upper layer unit and the lower layer unit, the diameter range of the through rod is 1.5-5 mm, and the height range of the through rod is 20-30 mm.

Preferably, the upper layer unit and the lower layer unit are of a solid structure, a sheet structure, a rod structure or a porous structure.

Preferably, the raw material for 3D printing is nylon or TPU powder.

Preferably, the 3D printing employs an S L S selective laser sintering method.

Preferably, the 3D printed printing material may be made of a material including ink, resin, acrylic, polymer, thermoplastic, thermosetting, photo-curing, or a combination thereof. The printed material may be a composite material.

When the energy absorption buffer layer is impacted in the vertical direction, the energy absorption buffer layer adopts a collapsing energy absorption mode: the upper layer unit has lower strength and the structure property of vertical elasticity and easy compression, so that the first crumpling deformation is realized, the lower layer unit with slightly higher strength is followed, the second crumpling deformation is realized under the action of the transmitted impact force, the two-time crumpling deformation absorbs a large amount of impact energy, and the action time of the impact force is delayed to reduce the vertical impact force on the head. When each fragment part of the energy-absorbing buffer layer is subjected to shearing impact force: because the upper layer unit and the lower layer unit are connected by only using a small number of through rods, the friction force between the upper layer unit and the lower layer unit is small, and the staggered sliding can be realized, so that the injury of the rotating force on the head and the vertebra is reduced.

Therefore, the energy-absorbing buffer layer of the multidirectional shockproof 3D printing helmet is arranged in the helmet, and multidirectional impact force applied to the head can be buffered.

Has the advantages that: the invention arranges all the slicing parts of the energy absorption buffer layer of the multidirectional shockproof 3D printing helmet in the helmet, can fully absorb energy and delay the action time of impact force through the two-time crumpling deformation of the buffer layer so as to relieve the vertical impact injury on the head, and can relieve the injury of the rotating force on the head and the spine through the misdirection sliding between the upper unit and the lower unit of the buffer layer.

Drawings

Fig. 1 to 3 are schematic structural diagrams of an energy-absorbing buffer layer of a multidirectional shockproof 3D printing helmet according to an embodiment of the present invention.

Fig. 4 and 5 are schematic structural diagrams of an upper slicing component according to an embodiment of the present invention.

Fig. 6 and 7 are schematic structural views of an energy-absorbing cushioning layer of a multidirectional shockproof 3D printing helmet according to an embodiment of the present invention.

In the figure, 1 is a front slicing part, 2 is an upper slicing part, 3 is a rear slicing part, 4 is a left slicing part, 5 is a right slicing part, 6 is an upper layer unit, 7 is a lower layer unit, 8 is a through rod, and 9 is a through rod hole.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

As shown in fig. 1-7: the energy-absorbing buffer layer of the multidirectional shockproof 3D printing helmet is fixed on the inner side of a helmet shell;

the 3D printing helmet energy absorption buffer layer is integrally in a head shape and is formed by splicing five slicing components, namely a front slicing component 1, a rear slicing component 3, a left slicing component 4, a right slicing component 5 and an upper slicing component 2;

the five slicing components comprise an upper layer unit 6, a lower layer unit 7, a through rod hole 9 and a plurality of through rods 8, and the slicing components are formed by connecting the through rods 8 through the through rod holes 9 in the upper layer unit 6 and the lower layer unit 7;

the cross section area of the hole of the through rod hole 9 is larger than that of the through rod 8, and the height of the through rod 8 is larger than the sum of the thicknesses of the upper-layer unit 6 and the lower-layer unit 7. The height of the through rod 8 is larger than the sum of the thicknesses of the upper-layer unit 6 and the lower-layer unit 7, the diameter range of the through rod 8 is 1.5-5 mm, and the height range is 20-30 mm.

The multidirectional shockproof 3D printing helmet energy absorption buffer layer is arranged in the helmet, can fully absorb energy and delay the action time of impact force through two-time crumple deformation of the buffer layer so as to relieve the vertical impact injury on the head, and can relieve the injury on the head and the spine caused by the rotating force through the misdirection sliding between the upper unit and the lower unit of the buffer layer.

According to the invention, the digital modeling of the 3D printing helmet energy absorption buffer layer is carried out by utilizing computer 3D design software, and the digital model of the 3D printing helmet energy absorption buffer layer is led into a 3D printer for printing.

According to the 3D printing helmet energy absorption buffer layer, the S L S selective laser sintering technology is utilized in 3D printing, TPU powder (or nylon powder) is adopted as a printing raw material, scanning irradiation is carried out on the powder layer by layer under the control of a computer through a laser, sintering and bonding of the TPU powder are achieved, and forming is achieved through layer-by-layer stacking.

The TPU powder adopted by the 3D printing helmet energy absorption buffer layer 3D printing is hundred-micron-sized powder, the sintering molding temperature is 160 degrees, the particle size and the molding temperature of the TPU powder are both possibly adopted by the invention, and the particle size and the molding temperature of the TPU powder adopted by the 3D printing helmet energy absorption buffer layer include but are not limited to the possibility.

The shape of the slicing component is designed according to actual requirements, and the structural forms of the upper layer unit and the lower layer unit of the slicing component can be a solid structure, a sheet structure, a rod structure, a porous structure and the like.