CN107972614B - Front collision energy absorption device of secondary energy absorption model vehicle containing elastic pressing rod and method thereof - Google Patents
Front collision energy absorption device of secondary energy absorption model vehicle containing elastic pressing rod and method thereof Download PDFInfo
- Publication number
- CN107972614B CN107972614B CN201711183820.9A CN201711183820A CN107972614B CN 107972614 B CN107972614 B CN 107972614B CN 201711183820 A CN201711183820 A CN 201711183820A CN 107972614 B CN107972614 B CN 107972614B
- Authority
- CN
- China
- Prior art keywords
- energy absorption
- shell
- spring
- energy
- connecting plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a front collision energy absorption device of a secondary energy absorption model vehicle containing elastic compression bars, which comprises an energy absorption shell, wherein a second elastic compression bar energy absorption device is arranged in the energy absorption shell, and first elastic compression bar energy absorption devices are symmetrically arranged at two ends of the second elastic compression bar energy absorption device; the first elastic pressing rod energy absorption device comprises a hollow ejector rod, one end of the ejector rod is connected with the energy absorption shell, a first spring is sleeved on the energy absorption shell, an ejector head is arranged at one end, far away from the ejector rod, of the first spring, and a first spring end block is arranged at the end part of the ejector head; and two ends of the second spring are respectively provided with a second spring end block, and the positioning rod passes through the second spring and is embedded in the hollow ejector rod. The energy absorption of the first stage is carried out through the rigid damping of the energy absorption shell, and the energy absorption of the second stage is carried out through the stress of the first spring connected with the two ends of the energy absorption shell and the second spring in the middle, so that the personal safety and the vehicle body parts are protected during collision.
Description
Technical Field
The invention relates to the technical field of vehicle front collision energy absorption, in particular to a vehicle front collision energy absorption device containing an elastic pressing rod type secondary energy absorption model and a method thereof.
Background
With the continuous development of social economy, automobiles have been popularized in daily life of people, traffic safety also becomes a focus of attention of people due to the increase of the automobile keeping quantity, casualties of people are often caused when a traffic accident happens, and a collision energy absorption device is arranged in the automobile in order to reduce the damage of collision to the people in the automobile.
At present, the types of the front collision energy absorption devices of the vehicles are fewer, generally, the front collision energy absorption devices of the vehicles are sheet metal parts, and because the structures of some front longitudinal beams are complex, the requirements on the materials of the sheet metal parts and the processed sheet metal parts are higher, the manufacturing cost is high, in addition, the conditions of poor collision energy absorption capacity and the like of the devices are caused due to the unreasonable position design of guide grooves of the existing energy absorption devices, the manufacturing cost is high, the principle structure is complex, the requirements on collision positions are higher, and the energy absorption effect is poor.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a vehicle front collision energy absorption device with a secondary energy absorption model containing an elastic pressing rod and a method thereof, and the device has the advantages of simple structure, low cost and good energy absorption effect.
The invention is realized by the following technical scheme:
the front collision energy absorption device of the secondary energy absorption model vehicle internally provided with the elastic pressing rod comprises an energy absorption shell, wherein a guide groove is arranged on the energy absorption shell, a second elastic pressing rod energy absorption device is arranged in the energy absorption shell, and first elastic pressing rod energy absorption devices are symmetrically arranged at two ends of the second elastic pressing rod energy absorption device;
the first elastic pressing rod energy absorption device comprises a hollow ejector rod, one end of the ejector rod is connected with an energy absorption shell, a first spring is sleeved on the energy absorption shell, an ejector head is arranged at one end, far away from the ejector rod, of the first spring, and a first spring end block is arranged at the end part of the ejector head;
the second spring pressing rod device comprises a second spring and a positioning rod, wherein second spring end blocks are arranged at two ends of the second spring respectively, and the positioning rod penetrates through the second spring and is nested in the hollow ejector rod.
Optionally, the energy-absorbing shell includes a second shell, and both ends of the second shell are connected to the first shell and the third shell respectively.
Optionally, a first connecting plate and a second connecting plate are respectively arranged at two ends of the first shell, a third connecting plate and a fourth connecting plate are respectively arranged at two ends of the second shell, a fifth connecting plate and a sixth connecting plate are respectively arranged at two ends of the third shell, the second connecting plate is connected with the third connecting plate, and the fourth connecting plate is connected with the fifth connecting plate.
Optionally, the first connecting plate and the sixth connecting plate are both provided with threaded holes for connecting with the first elastic pressing rod energy absorption device.
Optionally, four corners of the first connecting plate and the sixth connecting plate are provided with stepped holes.
Optionally, the two ends of the second spring are welded with second spring end blocks, and the middle part of the second spring is bonded with a positioning block.
Optionally, a circular groove is formed in the first spring end block, and the circular groove is used for installing a plug.
Optionally, the ejector rod is connected with the energy-absorbing shell through a support foot and a bottom plate, the support foot is connected with the ejector rod, the support foot is installed on the bottom plate, and the bottom plate is connected with the energy-absorbing shell.
The energy absorption method of the vehicle front collision energy absorption device of the secondary energy absorption model containing the elastic pressing rod comprises the following steps:
when the vehicle collides, the energy-absorbing shell is stressed, and the rigid damping of the energy-absorbing shell absorbs energy in a first stage;
after the energy-absorbing shell is stressed and compressed, the first spring connected with the two ends of the energy-absorbing shell and the second spring in the middle are stressed to perform energy absorption in the second stage.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses a front collision energy absorption device of a secondary energy absorption model vehicle containing elastic pressing rods, which comprises an energy absorption shell, wherein a guide groove is arranged on the energy absorption shell, a second elastic pressing rod energy absorption device is arranged in the energy absorption shell, and first elastic pressing rod energy absorption devices are symmetrically arranged at two ends of the second elastic pressing rod energy absorption device; the first elastic pressing rod energy absorption device comprises a hollow ejector rod, one end of the ejector rod is connected with the energy absorption shell, a first spring is sleeved on the energy absorption shell, an ejector head is arranged at one end, far away from the ejector rod, of the first spring, and a first spring end block is arranged at the end part of the ejector head; the second spring pressing rod device comprises a second spring and a positioning rod, wherein second spring end blocks are arranged at two ends of the second spring respectively, and the positioning rod penetrates through the second spring and is nested in the hollow ejector rod. The energy absorption of the first stage is carried out through the rigid damping of the energy absorption shell, and the energy absorption of the second stage is carried out through the stress of the first spring connected with the two ends of the energy absorption shell and the second spring in the middle, so that the personal safety and the vehicle body parts are protected during collision.
The invention relates to an energy absorption method of a vehicle front collision energy absorption device containing an elastic pressing rod type secondary energy absorption model, which comprises the steps that when a vehicle collides, an energy absorption shell is stressed, and the rigid damping of the energy absorption shell performs energy absorption in a first stage; after the energy-absorbing shell is stressed and compressed, the first spring connected with the two ends of the energy-absorbing shell and the second spring in the middle are stressed to perform energy absorption in the second stage. Therefore, the automobile shock absorber can protect personal safety and automobile parts during collision, and has the advantages of simple principle, low requirement on collision direction and good damping and energy absorption effects.
Drawings
FIG. 1 is a schematic structural diagram of a vehicle front collision energy-absorbing device including a secondary energy-absorbing model with an elastic pressing rod according to an embodiment of the invention;
FIG. 2 is a perspective view of a vehicle front collision energy-absorbing device with a secondary energy-absorbing model containing a spring and press rod according to an embodiment of the invention.
In the figure: 1. the spring comprises a first connecting plate, 2 bolts, 3, a first shell, 4, a second connecting plate, 5, a third connecting plate, 6, a second shell, 7, a fourth connecting plate, 8, a fifth connecting plate, 9, a third shell, 10, a sixth connecting plate, 11, a bottom plate, 12, a support foot, 13, a positioning block, 14, a second spring, 15, a second spring end block, 16, a first spring end block, 17 a jacking head, 18 a positioning rod, 19 a jacking rod and 20 a first spring.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
As shown in fig. 1 and fig. 2, the front collision energy-absorbing device of the secondary energy-absorbing model vehicle with the elastic pressing rod inside comprises an energy-absorbing shell, wherein a guide groove is arranged on the energy-absorbing shell, a second elastic pressing rod energy-absorbing device is arranged in the energy-absorbing shell, and first elastic pressing rod energy-absorbing devices are symmetrically arranged at two ends of the second elastic pressing rod energy-absorbing device;
the energy-absorbing shell comprises a first shell 3, a second shell 6 and a third shell 9, wherein a first connecting plate 1 and a second connecting plate 4 are respectively arranged at two ends of the first shell 3, a third connecting plate 5 and a fourth connecting plate 7 are respectively arranged at two ends of the second shell 6, a fifth connecting plate 8 and a sixth connecting plate 10 are respectively arranged at two ends of the third shell 9, the second connecting plate 4 is connected with the third connecting plate 5, and the fourth connecting plate 7 is connected with the fifth connecting plate 8.
The first connecting plate 1 and the sixth connecting plate 10 are provided with threaded holes for being connected with a first elastic pressing rod energy absorption device, stepped holes are formed in four corners of the first connecting plate 1 and the sixth connecting plate 10, the first connecting plate 1 is connected to the rear portion of the front compartment of the vehicle through a bolt group, and the sixth connecting plate 10 is connected to the front portion of the front compartment of the vehicle through the bolt group.
The first elastic pressing rod energy absorption device comprises a hollow ejector rod 19, one end of the ejector rod 19 is connected with the energy absorption shell, a first spring 20 is sleeved on the energy absorption shell, one end, far away from the ejector rod 19, of the first spring 20 is provided with an ejector head 17, the end part of the ejector head 17 is provided with a first spring end block 16, a circular groove is formed in the first spring end block 16, the ejector head 17 is installed in the circular groove, the ejector rod 19 is connected with the energy absorption shell through a support foot 12 and a bottom plate 11, the support foot 12 is connected with the ejector rod 19, and the support foot 12 is installed on the bottom plate 11. The bottom plate 11 adjacent to the first connecting plate 1 is connected with the first connecting plate 1 through bolts, and the bottom plate 11 adjacent to the sixth connecting plate 10 is connected with the sixth connecting plate 10 through bolts.
The connection between the base plate 11 and the support leg 12 is riveting, but it may be in other ways in practical application.
The second spring pressing rod device comprises a second spring 14 and a positioning rod 18, second spring end blocks 15 are arranged at two ends of the second spring 14 respectively, the positioning rod 18 penetrates through the second spring 14 to be nested in a hollow ejector rod 19, the second spring end blocks 15 and the second spring 14 are connected in a welding mode, and a positioning block 13 is bonded in the middle of the second spring 14.
The second housing 6 and the third housing 9 are provided with guide grooves at predetermined vector positions: for example, the guide grooves of the second housing 6 are centrally distributed in the longitudinal direction 1/5 to 4/5, and are equally distributed in four equal parts. The guide grooves of the third housing 9 are discretely distributed at the housing positions in the housing length directions 38/100, 42/100, and 68/100.
The working principle of the vehicle front collision energy absorption device containing the elastic pressing rod type secondary energy absorption model provided by the embodiment of the invention is as follows:
the vehicle front collision energy-absorbing device internally provided with the elastic pressing rod type secondary energy-absorbing model comprises a first shell 3, a second shell and a third shell, wherein one end of the first shell is provided with a first connecting plate 4, and the other end of the first shell is provided with a second connecting plate 4; the center of the first connecting plate 1 is provided with four uniform threaded holes for bolts to fix the part internally provided with the first elastic pressing rod energy absorption device, and the first connecting plate 1 is connected to the rear part in the front compartment of the vehicle; the second connecting plate 4 is connected with a third connecting plate 5 at one end of a second shell 6 through a bolt group; the other end of the second shell 6 is provided with a fourth connecting plate 7; the fourth connecting plate 7 is connected with a fifth connecting plate 8 at one end of a third shell 9 through a bolt group; the third shell 9 and the second shell 6 are provided with guide grooves at the appointed vector positions; one end of the third shell 9 is provided with a fifth connecting plate 8, and the other end is provided with a sixth connecting plate 10; the first connecting plate 1 and the sixth connecting plate 10 are connected to the front portion in the front compartment of the vehicle by bottom plates 11 for bolt connection to both ends of the first knock bar device, respectively; the base plate 11 is connected to the end of the stand leg 12 by caulking; one end of the first spring 20 is clamped on the support leg 12, and the other end is welded on the end part of the top head 17; a semi-hollow ejector rod 19 is nested in the hollow part at the other end of the support leg 12; a positioning rod 18 is nested in a half section of the hollow part of the ejector rod 19; the positioning rod 18 penetrates through the axial center of the second spring 14; one end of the top head 17 corresponds to the open end of the top rod 19, and the other end corresponds to the first spring end block 16; one end of the first spring end block 16 is provided with a circular groove corresponding to the top head 17, and the other end of the first spring end block corresponds to the second spring end block 15; the second spring end block 15 is welded to one end of the second spring 14; and second spring end blocks 15 are welded at two ends of the second spring 14, and a light positioning block 13 is bonded in the middle of the second spring.
Under the working condition that the sixth connecting plate 10 is impacted by force after collision occurs, the shell is subjected to qualitative compression energy absorption through the direction guide of the shell guide groove and longitudinally transmitted to the first connecting plate 1 until the rear part of the front compartment of the vehicle; because the energy after the collision presents a nonlinear state, the impact energy in the later stage of the collision can be greatly reduced relative to the earlier stage, the impact force in the later stage of the collision can compress the three sections of springs of the elastic rod, the springs can increase the contact area between the springs through the spring end blocks in the transmission process of elastic energy absorption, so that the force transmission is facilitated, and the elastic rod vibration damper contained in the middle part can well absorb the elastic energy and damp until the elastic energy is transmitted to the first connecting plate 1, thereby being beneficial to increasing the impact toughness and protecting the personal safety and the vehicle body parts.
The embodiment of the invention discloses a vehicle front collision energy absorption method containing an elastic pressing rod type secondary energy absorption model, which comprises the following steps:
when the vehicle collides, the energy-absorbing shell is stressed, and the rigid damping of the energy-absorbing shell absorbs energy in a first stage;
after the energy-absorbing shell is stressed and compressed, the first spring 20 connected with the two ends of the energy-absorbing shell and the second spring 14 in the middle are stressed to perform the energy absorption of the second stage.
The energy-absorbing shell absorbs collision energy after collision and deforms, then collision force compresses the three sections of springs, and the springs continue to absorb the collision energy, so that the impact toughness is increased, and personal safety and vehicle body parts are protected.
The embodiments of the present invention are merely illustrative of the spirit of the present invention, and those skilled in the art can modify the described embodiments or substitute them with similar ones without departing from the spirit of the present invention.
Claims (7)
1. The front collision energy absorption device of the secondary energy absorption model vehicle internally provided with the elastic pressing rod is characterized by comprising an energy absorption shell, wherein a second elastic pressing rod energy absorption device is arranged in the energy absorption shell, and first elastic pressing rod energy absorption devices are symmetrically arranged at two ends of the second elastic pressing rod energy absorption device;
the first elastic pressing rod energy absorption device comprises a hollow ejector rod (19), one end of the ejector rod (19) is connected with an energy absorption shell, a first spring (20) is sleeved on the energy absorption shell, one end, far away from the ejector rod (19), of the first spring (20) is provided with an ejector head (17), and the end part of the ejector head (17) is provided with a first spring end block (16);
the second elastic pressing rod device comprises a second spring (14) and a positioning rod (18), two ends of the second spring (14) are respectively provided with a second spring end block (15), and the positioning rod (18) penetrates through the second spring (14) and is embedded in a hollow ejector rod (19);
the energy absorption shell comprises a second shell (6), and two ends of the second shell (6) are respectively connected with a first shell (3) and a third shell (9);
a first connecting plate (1) and a second connecting plate (4) are respectively arranged at two ends of the first shell (3), a third connecting plate (5) and a fourth connecting plate (7) are respectively arranged at two ends of the second shell (6), a fifth connecting plate (8) and a sixth connecting plate (10) are respectively arranged at two ends of the third shell (9), the second connecting plate (4) is connected with the third connecting plate (5), and the fourth connecting plate (7) is connected with the fifth connecting plate (8);
the guide grooves of the second shell (6) are distributed in 1/5-4/5 sections in the length direction of the second shell and are distributed in four equal parts at equal intervals, and the guide grooves of the third shell (9) are distributed at the positions of the shells in the length direction 38/100, 42/100 and 68/100 of the third shell.
2. The energy absorbing device for the front collision of the secondary energy absorbing model vehicle with the elastic pressing rods inside as claimed in claim 1, wherein the first connecting plate (1) and the sixth connecting plate (10) are provided with threaded holes for connecting with the energy absorbing device of the first elastic pressing rod.
3. The front collision energy absorption device of a secondary energy absorption model vehicle with a built-in elastic pressing rod as claimed in claim 1, wherein step holes are arranged at the four corners of the first connecting plate (1) and the sixth connecting plate (10).
4. The front collision energy absorption device of the secondary energy absorption model vehicle with the elastic pressing rod inside as claimed in claim 1, characterized in that the second spring (14) is welded with the second spring end block (15) at both ends, and the positioning block (13) is bonded at the middle part of the second spring (14).
5. The energy absorbing device for a secondary energy absorbing model vehicle with a built-in snap rod as claimed in claim 1, wherein the first spring end block (16) is provided with a circular recess for a mounted head (17).
6. The front collision energy-absorbing device of a secondary energy-absorbing model vehicle with an internal spring-loaded rod as claimed in claim 1, wherein the ejector rod (19) is connected with the energy-absorbing shell through a support leg (12) and a bottom plate (11), the support leg (12) is connected with the ejector rod (19), the support leg (12) is mounted on the bottom plate (11), and the bottom plate (11) is connected with the energy-absorbing shell.
7. The energy absorption method of the front collision energy absorption device of the vehicle with the elastic pressing rod type secondary energy absorption model according to any one of claims 1 to 6, is characterized by comprising the following steps:
when the vehicle collides, the energy-absorbing shell is stressed, and the rigid damping of the energy-absorbing shell absorbs energy in a first stage;
after the energy-absorbing shell is stressed and compressed, the first spring (20) connected with the two ends of the energy-absorbing shell and the second spring (14) in the middle are stressed to perform energy absorption at the second stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711183820.9A CN107972614B (en) | 2017-11-23 | 2017-11-23 | Front collision energy absorption device of secondary energy absorption model vehicle containing elastic pressing rod and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711183820.9A CN107972614B (en) | 2017-11-23 | 2017-11-23 | Front collision energy absorption device of secondary energy absorption model vehicle containing elastic pressing rod and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107972614A CN107972614A (en) | 2018-05-01 |
| CN107972614B true CN107972614B (en) | 2020-11-24 |
Family
ID=62011220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711183820.9A Active CN107972614B (en) | 2017-11-23 | 2017-11-23 | Front collision energy absorption device of secondary energy absorption model vehicle containing elastic pressing rod and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107972614B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108909670B (en) * | 2018-06-12 | 2020-02-18 | 吉利汽车研究院（宁波）有限公司 | Active collision protection device |
| CN111619485B (en) * | 2020-06-03 | 2021-02-23 | 长沙理工大学 | Working method of fluid-solid coupling four-stage collision energy absorption device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106627453A (en) * | 2015-11-03 | 2017-05-10 | 重庆唯馨科技有限公司 | Automobile anticollision chassis |
| CN206141628U (en) * | 2016-10-19 | 2017-05-03 | 大连比亚迪汽车有限公司 | Strike energy -absorbing device and vehicle |
| CN206186955U (en) * | 2016-11-28 | 2017-05-24 | 吉林大学 | Built -in spring's car energy -absorbing box |
| CN206383968U (en) * | 2017-01-12 | 2017-08-08 | 深圳市乾行达科技有限公司 | A kind of multistage anti-climbing energy-absorbing device |
-
2017
- 2017-11-23 CN CN201711183820.9A patent/CN107972614B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107972614A (en) | 2018-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4031978A (en) | Energy absorber unit and energy management system | |
| US6007123A (en) | Energy absorbing bumper | |
| CN202863357U (en) | Automobile energy absorbing cartridge | |
| CN107972614B (en) | Front collision energy absorption device of secondary energy absorption model vehicle containing elastic pressing rod and method thereof | |
| CN107963043B (en) | Three-level combined vehicle collision integration system and method | |
| CN202847619U (en) | Automobile front anti-collision beam structure | |
| CN201193048Y (en) | Vehicle steering tube pole assembly | |
| CN202147649U (en) | Automobile collision energy absorber | |
| CN104632976A (en) | Elastic-plastic energy-absorption buffer component | |
| KR100775806B1 (en) | Crash box in automotive bumper system | |
| CN103921746B (en) | Synchronous energy absorption device before and after auto against | |
| CN2625212Y (en) | Hierarchical buffering type bumper for car | |
| CN109823296A (en) | A kind of automobile collision protection device | |
| CN105270153A (en) | Rear suspension of engine and four-point engine suspension system | |
| CA2282535A1 (en) | Kinetic energy absorbing element | |
| KR101143078B1 (en) | Crash energy absorber absorbing crash energy by stages | |
| KR101547279B1 (en) | Bumper beam unit for vehicles | |
| CN2265933Y (en) | Automotive anti-collision shock-damping device | |
| CN220130071U (en) | Impact-resistant automobile bumper | |
| CN107933695B (en) | Vehicle collision energy absorption device based on elastic broken tooth base and method thereof | |
| CN107972615B (en) | Two-stage energy absorption type vehicle front longitudinal energy absorption device | |
| CN213199671U (en) | Automobile anti-collision beam and automobile anti-collision structure | |
| CN220374452U (en) | Automobile collision buffer device | |
| CN205706872U (en) | Vehicle frame and there is its vehicle | |
| CN220114582U (en) | Bumper buffer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |