CN111634249A - Automobile bumper based on three-dimensional lattice material - Google Patents
Automobile bumper based on three-dimensional lattice material Download PDFInfo
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- CN111634249A CN111634249A CN202010550257.XA CN202010550257A CN111634249A CN 111634249 A CN111634249 A CN 111634249A CN 202010550257 A CN202010550257 A CN 202010550257A CN 111634249 A CN111634249 A CN 111634249A
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- dimensional lattice
- wire
- lattice material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/023—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R19/22—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact containing mainly cellular material, e.g. solid foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R2019/026—Buffers, i.e. bumpers of limited extent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
Abstract
The invention discloses an automobile bumper based on a three-dimensional lattice material, which comprises a cross bar and an anti-collision support, wherein an elastic buffer block is arranged between the cross bar and the anti-collision support; the three-dimensional lattice material comprises a plurality of cell units which are extended in the transverse direction and the longitudinal direction in space, each cell unit comprises two groups of node units which are parallel to each other and are arranged oppositely and at least two first wires which are connected between the two groups of node units, and each node unit is composed of four quadrilateral nodes; in any cell body unit, the first wires are mutually wound between two groups of node units to form the nodes, and two ends of each first wire are respectively connected to one node on the two groups of node units. The invention has the advantages of good energy absorption effect, capability of effectively ensuring the safety of automobiles, drivers and passengers and the like.
Description
Technical Field
The invention relates to the technical field of new material application, in particular to an automobile bumper based on a three-dimensional lattice material.
Background
With the development of society and the progress of science and technology, automobiles are more and more favored by people, the automobiles are widely popularized, and the popularization of the automobiles brings great convenience to the life of people, but also brings safety problems. In order to improve the safety of automobiles, developers add a plurality of protective devices on the automobiles, and automobile bumpers are one of the protective devices. The bumper is a device arranged at the front part of the vehicle body, and can absorb and slow down external impact force to protect the vehicle body when a collision accident occurs.
In the prior art, an automobile bumper of an automobile mainly comprises a metal cross beam, a metal cross bar and a hollow circular tube buffer structure, wherein the hollow circular tube buffer structure is arranged between the metal cross beam and the metal cross bar; hollow round tube cushioning structures are typically constructed of a plurality of aluminum round tubes arranged side-by-side. However, the metal round tubes on the automobile bumper in the prior art are simply arranged in parallel, so that the energy absorption effect of the hollow round tube buffer structure of the automobile bumper is limited, the energy absorption effect of the automobile bumper is poor, and the safety of the automobile and users who take the automobile can be affected.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide an energy-absorbing effect is good, can effectively guarantee car and driver and crew's safety's car bumper based on three-dimensional lattice material.
In order to solve the technical problems, the invention adopts the following technical scheme:
an automobile bumper based on a three-dimensional lattice material comprises a cross bar and an anti-collision support, wherein an elastic buffer block is arranged between the cross bar and the anti-collision support; the three-dimensional lattice material comprises a plurality of cell units which are extended in the transverse direction and the longitudinal direction in space, each cell unit comprises two groups of node units which are parallel to each other and are arranged oppositely and at least two first wires which are connected between the two groups of node units, and each node unit is composed of four quadrilateral nodes; in any cell body unit, the first wires are mutually wound between two groups of node units to form the nodes, and two ends of each first wire are respectively connected to one node on the two groups of node units.
In the structure, because the first wire rod wound node is arranged between the two groups of node units in any cell unit, and the cell units are arranged along the transverse direction and the longitudinal direction in a spreading manner, any node can form the cell unit with the two groups of node units at the corresponding position in space, namely any node on the three-dimensional lattice material is wound by the first wire rod. Because the first wires passing through the nodes are mutually wound to form a stable connection point, the first wires between the two nodes have better bending resistance, and the integral supporting strength of the three-dimensional lattice material can be improved. Meanwhile, the three-dimensional lattice materials have high porosity and a periodic structure, so that the three-dimensional lattice materials have higher impact absorption capacity, the automobile bumper has a better energy absorption effect, and the safety of an automobile and drivers and passengers can be effectively ensured.
Furthermore, the elastic buffer block also comprises a front connecting plate and a rear connecting plate, and the front connecting plate and the rear connecting plate are fixedly arranged on two opposite sides of the three-dimensional lattice material; the front connecting plate is detachably mounted on the cross bar through bolts, and the rear connecting plate is detachably mounted on the anti-collision support through bolts.
Through fixed preceding connecting plate and the back connecting plate of setting on the both sides that three-dimensional lattice material carried on the back mutually, and preceding connecting plate and back connecting plate homoenergetic with whippletree or crashproof support dismantlement, make elastic buffer block become on the car bumper detachably whole, be convenient for at elastic buffer block after the collision energy-absorbing damages, change elastic buffer block, need not to change whole car bumper to reduce and use cost of maintenance.
Furthermore, the first wire is a continuous wire which continuously extends, and is continuously bent in a zigzag shape in the direction in which the cross rod is connected with the anti-collision support.
The continuous wires which are continuously extended and arranged are arranged in a zigzag and continuous bending mode, so that the performance of the three-dimensional lattice material is more balanced, and the situation that the energy absorption performance of the whole elastic buffer block is affected by weak points caused by wire connection can be avoided.
Further, the cell body unit further comprises a second wire linearly connected to the nodes of the two groups of node units in a penetrating manner, and the first wire bypasses the second wire at the node through which the second wire passes.
Because first wire rod intertwine forms the node between two sets of node units for first wire rod is the slant and connects between two sets of node units, when receiving forward impact, can't fully absorb the energy of forward striking and will crumple. By arranging the second wire in a straight line connection between the two sets of nodes, the energy absorption performance in the direction can be improved.
Furthermore, the second wire is connected to two nodes which are opposite to each other on the two groups of node units.
Further, in the direction of the second wire, the second wire is connected to a node located in the middle of the adjacent cell units.
Furthermore, the cell body units are sequentially connected in the length direction and the width direction of the node units to form a dot matrix layer, and the dot matrix layer is laid along the surface of the cross bar and is provided with a plurality of layers in the vertical direction.
Further, the height of the dot matrix layer is gradually increased along the direction departing from the horizontal bar.
The higher the height of the lattice layer is, the weaker the bending resistance is, and the more easy the lattice layer is to collapse, so that when the bumper is collided, the lattice layer with the larger height collapses and absorbs energy first, and the collapse sequence can be controlled.
Furthermore, the height of the dot matrix layer is gradually increased from two sides to the middle.
Further, the second wire is a metal wire which is continuously extended; the first material is a continuously extending fiber-reinforced composite material.
In conclusion, the energy absorption device has the advantages of being good in energy absorption effect, capable of effectively guaranteeing the safety of automobiles, drivers and passengers and the like.
Drawings
FIG. 1 is a schematic view of a bumper according to the present invention.
Fig. 2 is an enlarged schematic view of the circle in fig. 1.
FIG. 3 is a schematic structural view of the cell body unit 6.
FIG. 4 is a schematic structural diagram of a three-dimensional lattice material.
FIG. 5 is a schematic structural diagram of a cell unit of another structure.
Fig. 6 is a schematic view of a winding structure of the first wire at the node.
Detailed Description
The present invention will be described in further detail with reference to examples.
In the specific implementation: as shown in fig. 1, an automobile bumper based on a three-dimensional lattice material comprises a cross bar 100 and a crash support 200, wherein an elastic buffer block 300 is arranged between the cross bar 100 and the crash support 200, the elastic buffer block 300 comprises a front connecting plate 301 and a rear connecting plate 302, and the three-dimensional lattice material is filled between the cross bar 100 and the crash support 200; the front connecting plate 301 and the rear connecting plate 302 are fixedly arranged on two opposite sides of the three-dimensional lattice material; the front connecting plate 301 is detachably mounted on the bar 100 by bolts, and the rear connecting plate 302 is detachably mounted on the crash bracket 200 by bolts.
Through fixed preceding connecting plate and the back connecting plate of setting on the both sides that three-dimensional lattice material carried on the back mutually, and preceding connecting plate and back connecting plate homoenergetic with whippletree or crashproof support dismantlement, make elastic buffer block become on the car bumper detachably whole, be convenient for at elastic buffer block after the collision energy-absorbing damages, change elastic buffer block, need not to change whole car bumper to reduce and use cost of maintenance.
The three-dimensional lattice material comprises a plurality of cell units 6 which are extended in the transverse direction and the longitudinal direction in space, as shown in fig. 3 and 4, each cell unit 6 comprises two groups of node units 5 which are parallel to each other and are arranged oppositely and at least two first wires 1a connected between the two groups of node units 5, and each node unit 5 is composed of four quadrilateral nodes 2; in any of the cell units 6, the first wires 1a are wound around each other between two sets of the node units 5 to form the nodes 2, and both ends are connected to one node of the two sets of the node units 5, respectively.
In the structure, because the first wire rod wound node is arranged between the two groups of node units in any cell unit, and the cell units are arranged along the transverse direction and the longitudinal direction in a spreading manner, any node can form the cell unit with the two groups of node units at the corresponding position in space, namely any node on the three-dimensional lattice material is wound by the first wire rod. Because the first wires passing through the nodes are mutually wound to form a stable connection point, the first wires between the two nodes have better bending resistance, and the integral supporting strength of the three-dimensional lattice material can be improved. Meanwhile, the three-dimensional lattice materials have high porosity and a periodic structure, so that the three-dimensional lattice materials have higher impact absorption capacity, the automobile bumper has a better energy absorption effect, and the safety of an automobile and drivers and passengers can be effectively ensured.
In this embodiment, the cell unit 6 further includes a second wire 1b linearly connected to the nodes of the two sets of node units 5, the first wire 2a bypasses the second wire 1b at the node where the second wire 1b passes through, and the second wire 1b is connected to two nodes of the two sets of node units 5 facing each other; and in the direction of the second wire 1b, the second wire 1b is connected to the node 2 which is positioned in the middle of the adjacent cell body unit 6.
Because first wire rod intertwine forms the node between two sets of node units for first wire rod is the slant and connects between two sets of node units, when receiving forward impact, can't fully absorb the energy of forward striking and will crumple. By arranging the second wire in a straight line connection between the two sets of nodes, the energy absorption performance in the direction can be improved.
As shown in fig. 1, the cell units 6 are sequentially connected in the length direction and the width direction of the node units 5 to form a lattice layer, which is laid along the surface of the bar 100 and is vertically provided with a plurality of layers. As shown in fig. 2, the height of the lattice layer is gradually increased from both sides to the middle.
In addition, in this embodiment, the second wire is a metal wire that extends continuously; the first material is a fiber reinforced composite material which continuously extends, and is continuously bent in a zigzag shape in the direction in which the cross bar 100 and the crash barrier 200 are connected. During manufacturing, the first wire and the second wire are supported and woven into a spatial three-dimensional structure through the weaving die, and then are cured and molded through resin or glue and the like.
The continuous wires which are continuously extended and arranged are arranged in a zigzag and continuous bending mode, so that the performance of the three-dimensional lattice material is more balanced, and the situation that the energy absorption performance of the whole elastic buffer block is affected by weak points caused by wire connection can be avoided.
In specific implementation, the cell unit 6 may also adopt a structure as shown in fig. 5, and further includes a third wire 1c sequentially passing through the node 2 along the length direction and the width direction of the node unit 5, and the first continuous wire 1a is wound around the intersection of two mutually staggered third wires 1c at the node.
In specific implementation, as shown in fig. 6, in order to increase the bonding strength of the first wire 1a at the node 2, the first wire 1a is wound around the node 2 for a plurality of turns.
In specific implementation, the first wire, the second wire and the third wire can also be all continuously extended metal wires, and the joints are reinforced by brazing or spot welding.
The above description is only exemplary of the present invention and should not be taken as limiting, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An automobile bumper based on a three-dimensional lattice material comprises a cross bar (100) and an anti-collision bracket (200), wherein an elastic buffer block (300) is arranged between the cross bar (100) and the anti-collision bracket (200), and the elastic buffer block (300) is characterized by comprising the three-dimensional lattice material filled between the cross bar (100) and the anti-collision bracket (200); the three-dimensional lattice material comprises a plurality of cell units (6) which are extended in the transverse direction and the longitudinal direction in space, each cell unit (6) comprises two groups of node units (5) which are parallel to each other and are arranged oppositely, and at least two first wires (1 a) which are connected between the two groups of node units (5), and each node unit (5) is composed of four quadrilateral nodes (2).
2. The vehicle bumper based on three-dimensional lattice material as claimed in claim 1, wherein the elastic buffer block (300) further comprises a front connection plate (301) and a rear connection plate (302), the front connection plate (301) and the rear connection plate (302) are fixedly arranged on two opposite sides of the three-dimensional lattice material; the front connecting plate (301) is detachably mounted on the cross bar (100) through bolts, and the rear connecting plate (302) is detachably mounted on the anti-collision support (200) through bolts.
3. The vehicle bumper based on three-dimensional lattice material according to claim 1, wherein the first wire (1 a) is a continuous wire extending continuously and is continuously bent in a zigzag shape in a direction in which the cross bar (100) and the crash brace (200) are connected.
4. The vehicle bumper based on three-dimensional lattice material according to claim 1, wherein the cell unit (6) further comprises a second wire (1 b) linearly connected throughout the nodes of the two sets of node units (5), the first wire (2 a) bypassing the second wire (1 b) at the node where the second wire (1 b) passes through.
5. The vehicle bumper based on three-dimensional lattice material according to claim 4, wherein the second wire (1 b) is connected to two nodes facing each other on two sets of node units (5).
6. The vehicle bumper based on three-dimensional lattice material according to claim 5, characterized in that the second wires (1 b) are connected to the nodes (2) located in the middle of the adjacent cell units (6) in the direction of the second wires (1 b).
7. The bumper for vehicle based on three-dimensional lattice material according to claim 1, wherein the cell units (6) are connected in sequence along the length direction and the width direction of the node unit (5) to form a lattice layer, and the lattice layer is laid along the surface of the beam (100) and is vertically arranged with a plurality of layers.
8. The three-dimensional lattice material-based bumper according to claim 7, wherein the lattice layer has a height that gradually increases in a direction away from the beam (100).
9. The vehicle bumper based on three-dimensional lattice material according to claim 8, wherein the height of the lattice layer is gradually increased from both sides to the middle.
10. The three-dimensional lattice material-based automotive bumper of claim 4, wherein the second wire is a continuously extending metal wire; the first material is a continuously extending fiber-reinforced composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010550257.XA CN111634249B (en) | 2020-06-16 | 2020-06-16 | Automobile bumper based on three-dimensional lattice material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010550257.XA CN111634249B (en) | 2020-06-16 | 2020-06-16 | Automobile bumper based on three-dimensional lattice material |
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| CN111634249A true CN111634249A (en) | 2020-09-08 |
| CN111634249B CN111634249B (en) | 2022-01-07 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3751869A (en) * | 1971-10-04 | 1973-08-14 | F Sparber | Wire support structure |
| CN1337484A (en) * | 2000-08-09 | 2002-02-27 | 村田机械株式会社 | Method and apparatus for producing three-dimesion material |
| KR20110139543A (en) * | 2010-06-23 | 2011-12-29 | 전남대학교산학협력단 | Three dimensional lattice truss structures and manufacturing method of the same |
| KR20140002983A (en) * | 2012-06-28 | 2014-01-09 | 전남대학교산학협력단 | Three dimensional lattice truss structures with nano-meter thick walls and manufacturing method of the same |
| WO2014160389A1 (en) * | 2013-03-13 | 2014-10-02 | Milwaukee School Of Engineering | Lattice structures |
| CN105711527A (en) * | 2016-03-25 | 2016-06-29 | 北京航空航天大学 | Bumper based on lattice unit cell honeycomb structure and automobile |
| KR20200061761A (en) * | 2018-11-26 | 2020-06-03 | 서일대학교산학협력단 | Composite damper using 3 dimensional steel stuss |
-
2020
- 2020-06-16 CN CN202010550257.XA patent/CN111634249B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3751869A (en) * | 1971-10-04 | 1973-08-14 | F Sparber | Wire support structure |
| CN1337484A (en) * | 2000-08-09 | 2002-02-27 | 村田机械株式会社 | Method and apparatus for producing three-dimesion material |
| KR20110139543A (en) * | 2010-06-23 | 2011-12-29 | 전남대학교산학협력단 | Three dimensional lattice truss structures and manufacturing method of the same |
| KR20140002983A (en) * | 2012-06-28 | 2014-01-09 | 전남대학교산학협력단 | Three dimensional lattice truss structures with nano-meter thick walls and manufacturing method of the same |
| WO2014160389A1 (en) * | 2013-03-13 | 2014-10-02 | Milwaukee School Of Engineering | Lattice structures |
| CN105711527A (en) * | 2016-03-25 | 2016-06-29 | 北京航空航天大学 | Bumper based on lattice unit cell honeycomb structure and automobile |
| KR20200061761A (en) * | 2018-11-26 | 2020-06-03 | 서일대학교산학협력단 | Composite damper using 3 dimensional steel stuss |
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| Publication number | Publication date |
|---|---|
| CN111634249B (en) | 2022-01-07 |
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Inventor after: Deng Jinshan Inventor after: Zhang Jiarui Inventor after: Zhai Guangtao Inventor after: Deng Changyong Inventor after: Liu Gang Inventor before: Zhang Jiarui Inventor before: Zhai Guangtao Inventor before: Deng Changyong Inventor before: Liu Gang |
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Address after: 1 No. 400052 Kowloon Jiulongpo District of Chongqing science and Technology Park, Hualong Avenue Patentee after: Chongqing Business Vocational College of Chongqing Open University Address before: 1 No. 400052 Kowloon Jiulongpo District of Chongqing science and Technology Park, Hualong Avenue Patentee before: CHONGQING TECHNOLOGY AND BUSINESS INSTITUTE, CHONGQING RADIO & TV University |
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