CN113232560A - Child safety seat based on artificial cartilage bionic material and negative Poisson ratio structure - Google Patents
Child safety seat based on artificial cartilage bionic material and negative Poisson ratio structure Download PDFInfo
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- CN113232560A CN113232560A CN202110414773.4A CN202110414773A CN113232560A CN 113232560 A CN113232560 A CN 113232560A CN 202110414773 A CN202110414773 A CN 202110414773A CN 113232560 A CN113232560 A CN 113232560A
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- negative poisson
- seat
- child safety
- artificial cartilage
- ratio
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
- B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
- B60N2/2884—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle with protection systems against abnormal g-forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/70—Upholstery springs ; Upholstery
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- General Health & Medical Sciences (AREA)
- Seats For Vehicles (AREA)
Abstract
本发明公开了一种基于人造软骨仿生材料与负泊松比结构的儿童安全座椅。涉及属于儿童安全座椅领域。提出了一种结构精巧、使用效果好且缓冲减振效果好的基于人造软骨仿生材料与负泊松比结构的儿童安全座椅。本发明的技术方案为：包括设置于座椅背部2之内以及座板4之上的两个负泊松比吸能装置3，所述负泊松比吸能装置3由人造软骨仿生材料按负泊松比结构制成。本发明在儿童安全座椅的背部和底部加入负泊松比吸能装置，从而可以减轻座椅底部与背部的振动，增加座椅的舒适性，同时降低汽车后碰撞与侧碰撞时乘员所受冲击，增强座椅的安全性，更大程度地提升儿童的乘坐体验与行车安全。
The invention discloses a child safety seat based on an artificial cartilage bionic material and a negative Poisson's ratio structure. Involved in the field of child safety seats. A child safety seat based on the artificial cartilage biomimetic material and the negative Poisson's ratio structure is proposed with a compact structure, good use effect and good shock absorption effect. The technical solution of the present invention is: including two negative Poisson's ratio energy-absorbing devices 3 arranged in the seat back 2 and on the seat plate 4, and the negative Poisson's ratio energy-absorbing devices 3 are made of artificial cartilage biomimetic materials. Made of negative Poisson's ratio structure. The invention adds a negative Poisson's ratio energy absorbing device to the back and bottom of the child safety seat, so that the vibration of the bottom and the back of the seat can be reduced, the comfort of the seat can be increased, and the occupant's impact on the rear and side collisions of the car can be reduced at the same time. Impact, enhance the safety of the seat, and improve the riding experience and driving safety of children to a greater extent.
Description
Technical Field
The invention belongs to the field of child safety seats, and particularly relates to a child safety seat based on an artificial cartilage bionic material and a negative Poisson ratio structure.
Background
With the popularization of automobiles in families, more and more people pay attention to the comfort and safety problems of starting driving, especially the comfort and safety problems of children, the child safety seat becomes an essential article for children families, and the comfort and safety of the child safety seat become main factors considered when parents buy the child safety seat. During driving, seat vibration mainly comes from the bottom and the back of the seat, and during rear collision, impact mainly comes from the back of the seat and damages passengers. Therefore, how to perform better cushioning and vibration reduction on the child safety seat becomes a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
Aiming at the problems, the invention provides the child safety seat based on the artificial cartilage bionic material and the negative poisson ratio structure, which is exquisite in structure, good in using effect and good in buffering and vibration reduction effect.
The technical scheme of the invention is as follows: the energy absorption device comprises two negative Poisson ratio energy absorption devices 3 arranged in a back part 2 of the seat and on a seat plate 4, wherein the negative Poisson ratio energy absorption devices 3 are made of artificial cartilage bionic materials according to a negative Poisson ratio structure.
The negative Poisson ratio structure is formed by a cellular array, and the cell walls of the cellular array are in a sine curve shape.
The sine equation of the sine curve is that y is 1.5sin (pi x/3), wherein 1.5mm is the sine amplitude, the sine period is 18mm, and the cell wall thickness is 1.2 mm.
The seat back 2 is provided with grooves, one negative poisson ratio energy absorption device is accommodated in each groove, and the thickness of the negative poisson ratio energy absorption device 3 is twice the depth of each groove.
The top surface of the negative Poisson ratio energy absorption device arranged on the seat board 4 is covered with a cushion, the cushion is made of EPS materials, and the outside of the cushion is wrapped with a fabric made of breathable cotton materials.
The filling material of the seat back is EPS material.
The headrest of the child safety seat is made of natural latex materials, and is wrapped by fabric made of breathable cotton materials.
According to the child safety seat, the negative Poisson ratio energy absorption devices are added at the back and the bottom of the child safety seat, and the negative Poisson ratio energy absorption devices are made of the artificial cartilage bionic material according to a negative Poisson ratio structure, namely the artificial cartilage bionic material is made into the negative Poisson ratio structure, so that the negative Poisson ratio energy absorption devices and the artificial cartilage bionic material are combined, and excellent buffering and vibration damping performance can be obtained, so that the vibration of the bottom and the back of the seat can be reduced, the comfort of the seat is improved, the impact on passengers during rear collision and side collision of an automobile is reduced, the safety of the seat is enhanced, and the riding experience and driving safety.
Drawings
FIG. 1 is a schematic structural diagram of a negative Poisson's ratio energy absorber according to the present invention,
figure 2 is a schematic view of the child safety seat of the present invention-figure one,
figure 3 is a second schematic view of the child safety seat of the present invention,
FIG. 4 is a schematic diagram of the structure of a single cell in the present invention;
in the figure, 1 is an upper backrest, 2 is a seat back, 3 is a negative poisson's ratio energy absorption device, 4 is a seat plate, and 5 is a base.
Detailed Description
In order to clearly explain the technical features of the present patent, the following detailed description of the present patent is provided in conjunction with the accompanying drawings.
The energy-absorbing device comprises two negative Poisson ratio energy-absorbing devices 3 arranged in a back part 2 of a seat and on a seat plate 4, wherein the negative Poisson ratio energy-absorbing devices 3 are made of artificial cartilage bionic materials according to a negative Poisson ratio structure.
The negative Poisson ratio metamaterial has the advantages of being light in weight, sound absorbing, high in damping and the like, and the negative Poisson ratio metamaterial also shows some special properties such as elastic modulus, indentation resistance, shear modulus, energy absorption and the like, so that the negative Poisson ratio metamaterial has excellent capacity in the aspect of buffering and vibration reduction.
The artificial cartilage bionic material is a high-performance buffering vibration-damping material, can convert impact moment into unobvious heat energy, and has vibration-damping performance higher than that of other materials on the market. The artificial cartilage bionic material is made into a negative Poisson ratio structure, and the advantages of the artificial cartilage bionic material and the negative Poisson ratio structure are combined, so that excellent buffering and vibration damping performance can be obtained.
As shown in fig. 1 and 4, the negative poisson's ratio structure is formed by an array of unit cells, and the cell walls of the unit cells are in a sine curve shape.
The sine equation of the sine curve is that y is 1.5sin (pi x/3), wherein 1.5mm is the sine amplitude, the sine period is 18mm, and the cell wall thickness is 1.2 mm.
The negative Poisson ratio energy absorption device arranged in the back of the seat is 300mm in width and 360mm in length, the two-dimensional negative Poisson ratio structure is formed by 20 multiplied by 9 single-cell arrays, and the bottom of the negative Poisson ratio energy absorption device is 110mm away from the upper plane of the seat so as to ensure that the negative Poisson ratio energy absorption device covers the stress area of the waist and the back of a child.
The length of the negative Poisson ratio energy absorption device arranged on the seat board is 360mm, the width of the negative Poisson ratio energy absorption device is 300mm, the negative Poisson ratio energy absorption device is wider than the buttocks of a child of 1-10 years old, and the two-dimensional negative Poisson ratio structure is formed by adopting 20 multiplied by 6 single cell arrays so as to ensure that the negative Poisson ratio energy absorption device bears the buttocks stress area of the child.
Wherein, back (1) still is equipped with above seat back (2), install the headrest on going up the back, the bedplate below still is equipped with base (5), base (5) are placed on car seat.
As shown in fig. 2, the seat back 2 is provided with a groove, one of the negative poisson's ratio energy-absorbing devices is accommodated in the groove, and the thickness of the negative poisson's ratio energy-absorbing device 3 is twice the depth of the groove. The size of the groove is as follows: the length is 360mm, the width is 300mm, and the depth is 78 mm. When the seat is installed, the child safety seat is attached to the backrest of the automobile seat, so that vibration transmitted from the backrest of the automobile seat is reduced, and when the tail of the automobile is impacted, energy is absorbed, and the effect of buffering and damping is achieved.
As shown in fig. 3, a cushion is covered on the top surface of the negative poisson's ratio energy absorption device arranged on the seat board 4, the cushion is made of EPS (polystyrene foam) material, and the cushion is wrapped with a fabric made of breathable cotton material. When vibration is transmitted from the bottom of the seat, the negative Poisson ratio energy absorption device plays a role, vibration felt by a human body is reduced, and the effect of improving comfort is achieved. The mounting position of the negative Poisson ratio energy absorption device covers the main stress position when a child rides.
As shown in FIG. 4, the negative Poisson's ratio cell consists of a sinusoidal curve with a period of 18mm, A being the magnitude of the sinusoidal amplitude and a value of 1.5mm, d being the thickness of the cell wall and a value of 1.2 mm.
The filling material of the seat back is EPS (polystyrene foam) material.
The headrest of the child safety seat is made of natural latex materials, and is wrapped by fabric made of breathable cotton materials.
While the invention has been described in terms of its preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110414773.4A CN113232560A (en) | 2021-04-17 | 2021-04-17 | Child safety seat based on artificial cartilage bionic material and negative Poisson ratio structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110414773.4A CN113232560A (en) | 2021-04-17 | 2021-04-17 | Child safety seat based on artificial cartilage bionic material and negative Poisson ratio structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113232560A true CN113232560A (en) | 2021-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110414773.4A Pending CN113232560A (en) | 2021-04-17 | 2021-04-17 | Child safety seat based on artificial cartilage bionic material and negative Poisson ratio structure |
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| CN (1) | CN113232560A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113771710A (en) * | 2021-08-30 | 2021-12-10 | 南京航空航天大学 | Car seat based on cellular structure of interior concave hexagon negative poisson ratio |
| CN120026567A (en) * | 2025-04-24 | 2025-05-23 | 中南大学 | A rockfall buffer device with negative Poisson's ratio characteristics |
Citations (5)
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| AU2002309026A1 (en) * | 2002-05-01 | 2003-11-17 | Hokkaido Technology Licensing Office Co., Ltd. | Gel having multiple network structure and method for preparation thereof |
| US20150320220A1 (en) * | 2014-05-06 | 2015-11-12 | Steelcase Inc. | Seating unit with auxetic user support |
| CN105667447A (en) * | 2016-03-28 | 2016-06-15 | 北京汽车股份有限公司 | Safety belt |
| CN206719026U (en) * | 2017-04-17 | 2017-12-08 | 南京航空航天大学 | A kind of child safety seat based on negative poisson's ratio material |
| CN109551827A (en) * | 2018-11-10 | 2019-04-02 | 天津可隆汽车配件有限公司 | A kind of recoverable automobile chair top |
-
2021
- 2021-04-17 CN CN202110414773.4A patent/CN113232560A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002309026A1 (en) * | 2002-05-01 | 2003-11-17 | Hokkaido Technology Licensing Office Co., Ltd. | Gel having multiple network structure and method for preparation thereof |
| US20150320220A1 (en) * | 2014-05-06 | 2015-11-12 | Steelcase Inc. | Seating unit with auxetic user support |
| CN105667447A (en) * | 2016-03-28 | 2016-06-15 | 北京汽车股份有限公司 | Safety belt |
| CN206719026U (en) * | 2017-04-17 | 2017-12-08 | 南京航空航天大学 | A kind of child safety seat based on negative poisson's ratio material |
| CN109551827A (en) * | 2018-11-10 | 2019-04-02 | 天津可隆汽车配件有限公司 | A kind of recoverable automobile chair top |
Non-Patent Citations (1)
| Title |
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| 邓小林等: "《一种负泊松比正弦曲线蜂窝结构的面内冲击动力学分析》", 《振动与冲击》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113771710A (en) * | 2021-08-30 | 2021-12-10 | 南京航空航天大学 | Car seat based on cellular structure of interior concave hexagon negative poisson ratio |
| CN120026567A (en) * | 2025-04-24 | 2025-05-23 | 中南大学 | A rockfall buffer device with negative Poisson's ratio characteristics |
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| PB01 | Publication | ||
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Application publication date: 20210810 |