CN107972617B - Performance-adjustable automobile collision energy absorbing device - Google Patents
Performance-adjustable automobile collision energy absorbing device Download PDFInfo
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- CN107972617B CN107972617B CN201711341276.6A CN201711341276A CN107972617B CN 107972617 B CN107972617 B CN 107972617B CN 201711341276 A CN201711341276 A CN 201711341276A CN 107972617 B CN107972617 B CN 107972617B
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- energy
- inner shell
- shell
- absorbing
- energy absorption
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Classifications
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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
- B60R19/24—Arrangements for mounting bumpers on vehicles
-
- 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
- B60R19/03—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by material, e.g. composite
-
- 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
- B60R19/24—Arrangements for mounting bumpers on vehicles
- B60R2019/242—Arrangements for mounting bumpers on vehicles on two vertical sleeves, e.g. on energy absorber ends
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention discloses a performance-adjustable automobile collision energy-absorbing device, which comprises a flange plate (1) used for detachably and fixedly connecting an anti-collision beam, and further comprises a lower energy-absorbing box (2) and an upper energy-absorbing box (3) which are fixedly connected to the flange plate (1), wherein the lower part of the upper energy-absorbing box (3) is detachably inserted into the upper part of the lower energy-absorbing box (2). The performance-adjustable automobile collision energy-absorbing device has high energy-absorbing efficiency, can realize multistage grading collapse, has adjustable energy-absorbing performance, is easy to standardize, and can be recycled.
Description
Technical Field
The invention belongs to the technical field of vehicle anti-collision energy absorbing devices, and particularly relates to a performance-adjustable vehicle anti-collision energy absorbing device with high energy absorbing efficiency and easy recycling of parts.
Background
The energy absorber of a vehicle is an essential part of the passive safety design of a vehicle, and is usually provided with different energy absorbing properties due to factors such as the type of vehicle and the design requirements. The energy absorber of the automobile is usually made of alloy steel or aluminum alloy, and the like, and is fixed on a box body on a longitudinal beam of the automobile in a certain mode. It can absorb part of energy during collision to reduce the damage of collision to automobile longitudinal beam and passengers in the automobile.
Chinese patent application number of 'automobile energy-absorbing box filled based on negative poisson ratio structure and multi-objective optimization method': CN201611222807.5, publication date: 2017-05-31, publication No.: CN106740620a discloses a negative poisson's ratio structure energy-absorbing box, which consists of an energy-absorbing box body, a rear mounting plate and an inner core of a concave hexagonal negative poisson's ratio structure.
However, this energy absorber has the following problems: 1. the energy absorption box must be replaced completely once the energy absorption box is deformed by collision, and parts cannot be recycled; 2. the energy-absorbing performance is not adjustable because the energy-absorbing device does not have the capability of grading collapse.
Disclosure of Invention
The invention aims to provide the automobile collision energy-absorbing device with adjustable performance, which has high energy-absorbing efficiency, can realize multistage grading collapse, has adjustable energy-absorbing performance, is easy to standardize and can be recycled.
The technical solution for realizing the purpose of the invention is as follows:
the utility model provides a performance adjustable car collision energy-absorbing device, includes flange 1 that is used for crashproof roof beam detachable fixed connection, still includes fixed connection lower energy-absorbing box 2 and last energy-absorbing box 3 on the flange 1, the detachable grafting of lower part of going up energy-absorbing box 3 is in the upper portion of lower energy-absorbing box 2.
Compared with the prior art, the invention has the remarkable advantages that:
1. energy-absorbing efficiency is high: the energy absorption box body and the filling energy absorption material are adopted, so that the energy absorption efficiency is high.
2. The energy absorption performance is adjustable, and the grading collapse can be realized: the energy absorption performance of the device can be changed by changing the structural size parameters and the energy absorption materials; the energy absorption performance of the energy-absorbing composite material can be changed by adopting a stacked nested design and increasing the number of layers; the energy absorbing device can be collapsed step by step in a grading way by changing the rigidity of each layer.
3. Parts are easy to standardize and can be recycled: the standardized design can be carried out on the parts; parts which are not damaged in the collision process can be recycled during maintenance.
Drawings
FIG. 1 is a schematic illustration of a performance-tunable automotive crash energy absorber apparatus of the present invention.
FIG. 2 is a schematic illustration of the internal structure of a performance-tunable automotive crash energy absorber.
FIG. 3 is a profile view of a performance tunable automotive crash energy absorber apparatus of the present invention in a cylindrical shape.
FIG. 4 is an outline view of a three-layer stacked performance tunable automotive crash energy absorber.
FIG. 5 is an outline view of a three-layer stacked performance tunable automotive crash energy absorber with varying deformation guide channels.
In the figure, a flange plate 1, bolt holes 11, a lower energy absorption box 2, a lower inner shell 21, a lower outer shell 22, an upper energy absorption box 3, an upper inner shell 31, an upper outer shell 32, a horizontal ring 33, an upper inner shell bottom 35,4 energy absorption material 26, 36 and 56 deformation guide grooves, and an overlapping energy absorption box 5 and an overlapping inner shell 51 are arranged.
Detailed Description
As shown in figure 1, the performance-adjustable automobile collision energy absorbing device comprises a flange plate 1 used for detachably and fixedly connecting an anti-collision beam, and further comprises a lower energy absorbing box 2 and an upper energy absorbing box 3 which are fixedly connected to the flange plate 1, wherein the lower part of the upper energy absorbing box 3 is detachably inserted into the upper part of the lower energy absorbing box 2.
As shown in fig. 2, the lower energy-absorbing box 2 comprises a cylindrical lower inner shell 21 and a lower outer shell 22 sleeved outside the lower inner shell 21, wherein the inner diameter of the lower part of the lower inner shell 21 is smaller than that of the upper part, the lower end of the upper part is smoothly connected with the upper end of the lower part, and the bottom ends of the lower inner shell 21 and the lower outer shell 22 are fixedly connected with the flange plate 1;
the upper energy absorption box 3 comprises an upper inner shell 31 and an upper outer shell 32 sleeved outside the upper inner shell 31, wherein the inner diameter of the lower part of the upper inner shell 31 is smaller than that of the upper part, the lower end of the upper part is smoothly connected with the upper end of the lower part, and the upper end of the upper inner shell 31 is fixedly connected with the upper end of the upper outer shell 32 through a horizontal ring 33;
the bottom end of the upper inner shell 31 is closed by a horizontal plate to form an upper inner shell bottom 35;
the lower part of the upper inner shell 31 is inserted into the upper part of the lower inner shell 21 in an interference fit manner, so that the lower end of the upper outer shell 32 is in contact fit with the upper end of the lower outer shell 22;
the energy absorbing material 4 is filled in the lower inner shell 21 between the upper inner shell bottom 35 and the flange 1, and the energy absorbing material 4 is also filled in the small inner diameter upper inner shell 31.
The lower outer shell 22 has the same height as the lower inner shell 21, and the upper outer shell 32 has the same height as the upper portion of the large inner diameter of the upper inner shell 31.
The upper housing 32 is provided with a horizontal deformation guide groove 36 at the periphery thereof.
The lower housing 22 is provided with a horizontal deformation guide groove 26 at the periphery thereof.
Preferably, the lower and upper crash boxes 2 and 3 are cylindrical in shape as shown in fig. 3 or square in shape as shown in fig. 1 to 2.
As shown in fig. 4, as a modification, at least one superposition energy absorption box 5 with the same structure is further arranged on the upper energy absorption box 3, and the lower part of the superposition inner shell 51 of the superposition energy absorption box 5 is inserted into the upper inner shell 21 of the upper energy absorption box 3 or the upper part of the other superposition inner shell 51 in an interference fit manner.
As shown in fig. 5, as a further improvement, the deformation guide groove 56 on the superimposed crash box 5 has the largest cross-sectional height, the deformation guide groove 36 on the lower crash box 2 has the smallest cross-sectional height, and the deformation guide groove 26 on the upper crash box 3 has a cross-sectional height intermediate the two.
The flange plate 1 is connected with an automobile anti-collision beam through a bolt hole 11, and the other end of the energy absorbing device is welded with the automobile longitudinal beam.
The working of the invention is described below with specific examples.
Example 1
As shown in fig. 1 and 2, in the first embodiment of the invention, the energy absorbing boxes 2 and 3 are made of high-strength steel plates, and the energy absorbing material 4 is a foamed aluminum material. The flange plate 1 is connected with an automobile anti-collision beam through a bolt hole 11, and the other end of the energy absorbing device is welded with the automobile longitudinal beam. Taking a frontal collision as an example when an automobile runs at a medium and high speed, in this embodiment, the front anti-collision beam transmits collision energy to the automobile energy absorber when the collision occurs, the energy absorber begins to collapse and absorb energy, the deformation guide groove on the outer wall of the energy absorber can guide rapid collapse, the uniformity of integral deformation is improved, after the shell at the forefront end is compressed, the collision continues, the internal energy absorbing material 4 begins to be compressed, until the whole energy absorber is completely compressed, and the work of the device is completed. If parts which are not deformed in the collision process can be recycled in the maintenance process, the cost is saved, and the material utilization rate is improved.
The above embodiment is only one embodiment of the present invention, and is not intended to limit the present invention, and any modifications, substitutions, alterations, and other modifications can be made within the spirit and principles of the present invention.
Example two
As shown in FIG. 3, in the nested stacked type automobile crash energy absorbing device according to the fourth embodiment of the invention, the energy absorbing boxes 2 and 3 are made of high-strength steel plates, and the energy absorbing material 4 is a foamed aluminum material. The cross-sectional shape of the tube is changed to a circular shape, and the deformation guide grooves 26 and 36 are formed around the outer shell by one turn. The flange plate 1 is connected with an automobile anti-collision beam through a bolt hole 11, and the other end of the energy absorbing device is welded with the automobile longitudinal beam. Taking a frontal collision as an example when an automobile runs at a medium and high speed, in this embodiment, the front anti-collision beam transmits collision energy to the automobile energy absorber when the collision occurs, the energy absorber begins to collapse and absorb energy, the deformation guide groove on the outer wall of the energy absorber can guide rapid collapse, the uniformity of integral deformation is improved, after the shell at the forefront end is compressed, the collision continues, the internal energy absorbing material 4 begins to be compressed, until the whole energy absorber is completely compressed, and the work of the device is completed. If parts which are not deformed in the collision process can be recycled in the maintenance process, the cost is saved, and the material utilization rate is improved.
The above embodiment is only one embodiment of the present invention, and is not intended to limit the present invention, and any modifications, substitutions, alterations, and other modifications can be made within the spirit and principles of the present invention.
Example III
As shown in FIG. 4, in the nested stacked type automobile crash energy absorbing device according to the second embodiment of the invention, the energy absorbing boxes 2, 3 and 5 are made of high-strength steel plates, and the energy absorbing material 4 is a foamed aluminum material. The energy absorption device of the first embodiment is further provided with a layer of energy absorption box body 5, and the energy absorption material 4 is filled in the box body. The flange plate 1 is connected with an automobile anti-collision beam through a bolt hole 11, and the other end of the energy absorbing device is welded with the automobile longitudinal beam. Taking a frontal collision as an example when an automobile runs at a medium and high speed, in this embodiment, the front anti-collision beam transmits collision energy to the automobile energy absorber when the collision occurs, the energy absorber begins to collapse and absorb energy, the deformation guide groove on the outer wall of the energy absorber can guide rapid collapse, the uniformity of integral deformation is improved, after the shell at the forefront end is compressed, the collision continues, the internal energy absorbing material 4 begins to be compressed, until the whole energy absorber is completely compressed, and the work of the device is completed. Compared with the energy absorbing device in the first embodiment, the energy absorbing device in the first embodiment has a layer, so that the overall energy absorbing performance is improved. If parts which are not deformed in the collision process can be recycled in the maintenance process, the cost is saved, and the material utilization rate is improved.
The above embodiment is only one embodiment of the present invention, and is not intended to limit the present invention, and any modifications, substitutions, alterations, and other modifications can be made within the spirit and principles of the present invention.
Example IV
As shown in FIG. 5, in the third embodiment of the present invention, the energy absorbing boxes 2, 3 and 5 are made of high-strength steel plates, and the energy absorbing material 4 is a foamed aluminum material. The purpose of changing the structural rigidity is achieved by changing the dimensions of the outer deformation guide grooves 26, 36 and 56 in the second embodiment, wherein the deformation guide groove 56 has the largest cross-sectional height, and the deformation guide groove 36 on the lower crash box 2 has the smallest cross-sectional height, and the deformation guide groove 26 on the upper crash box 3 has a cross-sectional height intermediate the two. The flange plate 1 is connected with an automobile anti-collision beam through a bolt hole 11, and the other end of the energy absorbing device is welded with the automobile longitudinal beam. Taking a frontal collision when the automobile runs at a medium and high speed as an example, in the embodiment, the front anti-collision beam transmits collision energy to the automobile energy absorbing device when the collision occurs, the rigidity of the front-most structure is reduced due to the large size of the deformation guide groove, and the structural deformation begins from a part with low rigidity and gradually expands towards the rear end, so that the staged collapse from front to rear is realized. If parts which are not deformed in the collision process can be recycled in the maintenance process, the cost is saved, and the material utilization rate is improved.
The above embodiment is only one embodiment of the present invention, and is not intended to limit the present invention, and any modifications, substitutions, alterations, and other modifications can be made within the spirit and principles of the present invention.
Claims (5)
1. The utility model provides a performance adjustable car collision energy-absorbing device, is including being used for crashproof roof beam detachable fixed connection's ring flange (1), its characterized in that:
the energy-absorbing device further comprises a lower energy-absorbing box (2) and an upper energy-absorbing box (3) which are fixedly connected to the flange plate (1), wherein the lower part of the upper energy-absorbing box (3) is detachably inserted into the upper part of the lower energy-absorbing box (2);
the lower energy absorption box (2) comprises a cylindrical lower inner shell (21) and a lower outer shell (22) sleeved outside the lower inner shell (21), the inner diameter of the lower part of the lower inner shell (21) is smaller than that of the upper part, the lower end of the upper part of the lower inner shell is smoothly connected with the upper end of the lower part, and the bottoms of the lower inner shell (21) and the lower outer shell (22) are fixedly connected with the flange plate (1);
the upper energy absorption box (3) comprises an upper inner shell (31) and an upper outer shell (32) sleeved outside the upper inner shell (31), wherein the inner diameter of the lower part of the upper inner shell (31) is smaller than that of the upper part, the lower end of the upper part of the upper inner shell is smoothly connected with the upper end of the lower part, and the upper end of the upper inner shell (31) is fixedly connected with the upper end of the upper outer shell (32) through a horizontal ring (33);
the bottom end of the upper inner shell (31) is closed by a horizontal plate to form an upper inner shell bottom (35);
the lower part of the upper inner shell (31) is inserted into the upper part of the lower inner shell (21) in an interference fit manner, so that the lower end of the upper outer shell (32) is in positive contact fit with the upper end of the lower outer shell (22);
an energy absorbing material (4) is filled in the lower inner shell (21) between the bottom (35) of the upper inner shell and the flange plate (1), and the energy absorbing material (4) is also filled in the upper inner shell (31) with a small inner diameter;
the lower energy absorption box (2) and the upper energy absorption box (3) are cylindrical or square cylindrical in appearance;
and at least one superposition energy absorption box (5) with the same structure is further arranged on the upper energy absorption box (3), and the lower part of the superposition inner shell (51) of the superposition energy absorption box (5) is inserted into the upper part of the upper inner shell (31) or the other superposition inner shell (51) of the upper energy absorption box (3) in an interference fit manner.
2. The energy absorber of claim 1 wherein:
the height of the lower outer shell (22) is the same as that of the lower inner shell (21), and the height of the upper outer shell (32) is the same as that of the upper part of the large inner diameter of the upper inner shell (31).
3. The energy absorber of claim 2 wherein:
the periphery of the upper shell (32) is provided with a horizontal deformation guide groove (36).
4. An energy absorber according to claim 3, wherein:
the periphery of the lower shell (22) is provided with a horizontal deformation guide groove (26).
5. The energy absorber of claim 1 wherein:
the deformation guide groove (56) on the superposition energy absorption box (5) has the largest section height, the deformation guide groove (26) on the lower energy absorption box (2) has the smallest section height, and the section height of the deformation guide groove (36) on the upper energy absorption box (3) is between the two sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711341276.6A CN107972617B (en) | 2017-12-14 | 2017-12-14 | Performance-adjustable automobile collision energy absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711341276.6A CN107972617B (en) | 2017-12-14 | 2017-12-14 | Performance-adjustable automobile collision energy absorbing device |
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| Publication Number | Publication Date |
|---|---|
| CN107972617A CN107972617A (en) | 2018-05-01 |
| CN107972617B true CN107972617B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711341276.6A Active CN107972617B (en) | 2017-12-14 | 2017-12-14 | Performance-adjustable automobile collision energy absorbing device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109263588B (en) * | 2018-09-18 | 2020-11-13 | 北汽福田汽车股份有限公司 | Energy-absorbing box, crashproof roof beam subassembly and vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381269A (en) * | 2011-08-18 | 2012-03-21 | 凌云工业股份有限公司 | Automobile bumper energy absorption box with stable performance |
| CN102582548A (en) * | 2012-03-01 | 2012-07-18 | 刘小娟 | Collision energy absorbing and bending resisting device |
| CN205256252U (en) * | 2015-12-15 | 2016-05-25 | 北京汽车股份有限公司 | Energy -absorbing box and car |
| CN106515630A (en) * | 2016-11-11 | 2017-03-22 | 吉林大学 | Bumper system imitating bamboo structure |
| CN107150647A (en) * | 2017-04-20 | 2017-09-12 | 浙江零跑科技有限公司 | Compressible automobile collision preventing girder construction |
-
2017
- 2017-12-14 CN CN201711341276.6A patent/CN107972617B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381269A (en) * | 2011-08-18 | 2012-03-21 | 凌云工业股份有限公司 | Automobile bumper energy absorption box with stable performance |
| CN102582548A (en) * | 2012-03-01 | 2012-07-18 | 刘小娟 | Collision energy absorbing and bending resisting device |
| CN205256252U (en) * | 2015-12-15 | 2016-05-25 | 北京汽车股份有限公司 | Energy -absorbing box and car |
| CN106515630A (en) * | 2016-11-11 | 2017-03-22 | 吉林大学 | Bumper system imitating bamboo structure |
| CN107150647A (en) * | 2017-04-20 | 2017-09-12 | 浙江零跑科技有限公司 | Compressible automobile collision preventing girder construction |
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| CN107972617A (en) | 2018-05-01 |
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