CN107933695B - Vehicle collision energy absorption device based on elastic broken tooth base and method thereof - Google Patents
Vehicle collision energy absorption device based on elastic broken tooth base and method thereof Download PDFInfo
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- CN107933695B CN107933695B CN201711185925.8A CN201711185925A CN107933695B CN 107933695 B CN107933695 B CN 107933695B CN 201711185925 A CN201711185925 A CN 201711185925A CN 107933695 B CN107933695 B CN 107933695B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
- B62D21/152—Front or rear frames
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
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- Combustion & Propulsion (AREA)
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- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a vehicle collision energy-absorbing device based on an elastic broken tooth base, which belongs to the technical field of vehicle front longitudinal beam collision energy absorption and comprises a broken tooth energy-absorbing device, a damping device and an elastic energy-absorbing device, wherein when a vehicle collides, energy generated by collision is firstly transmitted to the broken tooth energy-absorbing device, and primary energy absorption is carried out through the broken tooth energy-absorbing device; the energy which cannot be absorbed by the broken tooth energy absorption device is transmitted in the next step, and secondary absorption of the energy is carried out through the damping device, and the stage has the characteristics of larger absorbed energy and large flexibility; the energy which cannot be absorbed by the damping device is transmitted to the elastic energy absorption device, and the elastic energy absorption device is used for carrying out three-stage energy absorption, so that the stage has high flexibility, the safety of the people after the vehicle collision can be well protected, and the damage to other parts of the vehicle can be reduced as much as possible.
Description
Technical Field
The invention belongs to the technical field of vehicle front longitudinal beam collision energy absorption, and particularly relates to a vehicle collision energy absorption device based on an elastic broken tooth base 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 front longitudinal beam collision energy absorption device of the vehicle is usually used for reducing the injury of collision to people in the vehicle, the front longitudinal beam collision energy absorption device of the vehicle has poor collision resistance and energy absorption effects, the requirements on the size and the direction of complex multidirectional expansion force are high, the cost of the existing device is high, the maintenance cost is high, the principle structure is complex, and the energy absorption effect is poor.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a vehicle collision energy absorption device based on an elastic broken tooth base and a method thereof, and the vehicle collision energy absorption device is low in manufacturing cost, simple in principle structure and good in energy absorption effect.
The invention is realized by the following technical scheme:
the vehicle collision energy-absorbing device based on the elastic broken tooth base comprises a broken tooth energy-absorbing device, a damping device and an elastic energy-absorbing device;
the broken tooth energy absorption device comprises a concave tooth seat and a convex top seat, wherein the convex end of the convex top seat is embedded in the concave tooth seat, the non-embedded end of the concave tooth seat is used for being connected with a front bumper of a vehicle, and the non-embedded end of the convex top seat is connected with the damping device;
the shock absorption device comprises a first connecting plate, a shock absorber, a damper and a second connecting plate, wherein the first connecting plate and the second connecting plate are arranged in parallel;
the elastic energy absorption device comprises a third connecting plate, a first spring, a central shaft assembly and a rear lever, one end of the central shaft assembly is connected with the third connecting plate, the other end of the central shaft assembly is connected with the rear lever, the first spring is sleeved on the central shaft assembly, and the third connecting plate is connected with the second connecting plate.
Optionally, the damper includes a center rod, a second spring, a first plug, and a first connecting disc;
the two ends of the central rod are symmetrically provided with first jacks, a central hole is formed in each first jack, the central rod is installed in the central hole in one end of each first jack, the other end of each first jack is connected with the connecting disc, the second spring sleeves the first jacks at the two ends of the central rod, the first jacks at the two ends of the central rod are connected with first connecting discs, the first connecting disc at one end of the central rod is connected with the first connecting plate, and the first connecting disc at the other end of the central rod is connected with the second connecting plate.
Optionally, the damper comprises a short beam and an energy absorption box;
one end of the short beam is connected with the first connecting plate, the other end of the short beam is connected with one end of the energy absorption box, and the other end of the energy absorption box is connected with the second connecting plate.
Optionally, a fourth connecting plate and a fifth connecting plate are respectively arranged at two ends of the short beam, the fourth connecting plate is connected with the first connecting plate, and the fifth connecting plate is connected with the energy absorption box.
And a sixth connecting plate and a seventh connecting plate are respectively arranged at two ends of the energy absorption box, the sixth connecting plate is connected with the short beam, and the seventh connecting plate is connected with the second connecting plate.
Optionally, the energy absorption box and the short beam are both hollow cuboid structures.
Optionally, three first guide grooves are uniformly formed in each of four edges of the energy absorption box perpendicular to the first connecting plate.
Optionally, each of four edges of the short beam perpendicular to the first connecting plate is provided with a second guide groove.
Optionally, the central shaft assembly comprises a central shaft, and the two ends of the central shaft are provided with second ejection heads.
Optionally, the non-embedding end of the concave tooth holder is provided with a front plate, the non-embedding end of the convex top holder is provided with an eighth connecting plate, the eighth connecting plate is connected with the damping device, the front plate is of a rectangular structure, and four corners of the rectangular structure are provided with stepped holes.
The vehicle collision energy absorption method based on the elastic broken tooth base comprises the following steps:
when a front bumper of a vehicle collides, energy generated by collision is firstly transmitted to a broken tooth energy absorption device for primary energy absorption;
the energy which cannot be absorbed by the broken tooth energy absorption device is transmitted in the next step, and the damping device absorbs the energy in the second step;
and transferring the energy which cannot be absorbed by the damping device to the elastic energy absorption device to carry out three-stage energy absorption.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses a vehicle collision energy-absorbing device based on an elastic broken tooth base, which comprises a broken tooth energy-absorbing device, a damping device and an elastic energy-absorbing device, wherein when a vehicle collides, energy generated by collision is firstly transmitted to the broken tooth energy-absorbing device, and primary absorption of energy is carried out through the broken tooth energy-absorbing device; the energy which cannot be absorbed by the broken tooth energy absorption device is transmitted in the next step, and secondary absorption of the energy is carried out through the damping device, and the stage has the characteristics of larger absorbed energy and large flexibility; the energy which cannot be absorbed by the damping device is transmitted to the elastic energy absorption device, and the elastic energy absorption device is used for carrying out three-stage energy absorption, so that the stage has high flexibility, the safety of the people after the vehicle collision can be well protected, and the damage to other parts of the vehicle can be reduced as much as possible. The energy absorption device has the characteristics of low manufacturing cost, simple principle and structure, increased energy absorption area, low collision requirement, good energy absorption flexibility effect and the like.
The invention discloses a vehicle collision energy-absorbing method based on an elastic broken tooth base, when a vehicle front bumper collides, energy generated by collision is firstly transmitted to a broken tooth energy-absorbing device for primary energy absorption, and the stage has the characteristics of small rigidity and large energy absorption; the energy which cannot be absorbed by the broken tooth energy absorption device is transmitted in the next step, and the damping device absorbs the energy in the second step, so that the broken tooth energy absorption device has the characteristic of high flexibility; the energy which cannot be absorbed by the damping device is transmitted to the elastic energy absorption device to be absorbed at three levels, and the stage has high flexibility, so that the safety of the automobile after collision can be well protected, and the damage to other parts of the automobile can be reduced as much as possible. The collision area is large, so the collision requirement is low, and the energy absorption flexibility effect is good.
Drawings
FIG. 1 is a schematic structural diagram of a vehicle collision energy absorption device based on an elastic broken tooth base according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of another vehicle collision energy absorption device based on an elastic broken tooth base according to an embodiment of the invention.
In the figure: 1. the energy-absorbing.
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 2, a vehicle collision energy-absorbing device based on an elastic broken tooth base comprises a broken tooth energy-absorbing device, a damping device and an elastic energy-absorbing device;
the broken tooth energy absorption device comprises a concave tooth seat 2, a convex top seat 3, a front plate 1 and an eighth connecting plate 4, wherein the convex end of the convex top seat 3 is embedded in the concave tooth seat 2, the non-embedded end of the concave tooth seat 2 is provided with the front plate 1 for being connected with a front bumper of a vehicle, the non-embedded end of the convex top seat 3 is provided with the eighth connecting plate 4, and the eighth connecting plate 4 is connected with a damping device;
wherein, front bezel 1 is the rectangle structure, and the four corners of rectangle structure is provided with the shoulder hole, and front bezel 1 passes through bolt assembly with the vehicle front bumper and connects, and front bezel 1 welds with concave tooth seat 2, and eighth connecting plate 4 welds with convex top seat 3.
Damping device includes first connecting plate 5, bumper shock absorber, attenuator and second connecting plate 11, first connecting plate 5 and 11 parallel arrangement of second connecting plate, and bumper shock absorber and attenuator are located between first connecting plate 5 and the second connecting plate 11, and the both ends of bumper shock absorber are connected with first connecting plate 5 and second connecting plate 11 respectively, and the both ends of attenuator are connected with first connecting plate 5 and second connecting plate 11 respectively. Wherein, the eighth connecting plate 4 and the first connecting plate 5 are connected by a bolt group or welded.
The shock absorber comprises a central rod 25, a second spring 24, a first top 23 and a connecting disc; the both ends symmetry of well core rod 25 is provided with first top 23, be provided with the centre bore on the first top 23, well core rod 25 is installed in the centre bore of first top 23 one end, the other end and the connection pad of first top 23 are connected, second spring 24 covers on the first top 23 at well core rod 25 both ends, all be connected with first flange 19 on the first top 23 at well core rod 25 both ends, the first flange 19 and the first connecting plate of well core rod 25 one end are connected, the first flange 19 and the second connecting plate 11 of the other end are connected. The second spring end block 22 is welded to both ends of the second spring 24.
The damper comprises a short beam 6, an energy absorption box 9, a fourth connecting plate, a fifth connecting plate 7, a sixth connecting plate 8 and a seventh connecting plate 10; the two ends of the short beam 6 are respectively connected with the fourth connecting plate and the fifth connecting plate 7, the two ends of the energy absorption box 9 are respectively connected with the sixth connecting plate 8 and the seventh connecting plate 10, the fourth connecting plate is connected with the first connecting plate 5, the fifth connecting plate 7 is connected with the sixth connecting plate 8, the seventh connecting plate 10 is connected with the second connecting plate 11, and the connecting modes are bolt connection or welding.
The elastic energy absorption device comprises a third connecting plate 21, a first spring 16, a central shaft assembly and a rear lever 12, one end of the central shaft assembly is connected with the third connecting plate 21, the other end of the central shaft assembly is connected with the rear lever 12, the first spring 16 is sleeved on the central shaft assembly, the third connecting plate 21 is connected with the second connecting plate 11, the central shaft assembly can be compressed and stretched, the two ends of the first spring 16 are respectively provided with a second connecting plate 13, and the two ends of the first spring 16 are respectively provided with a first spring end block 14. One of the second connecting plates 13 is connected to the third connecting plate 21 by a bolt, and the other second connecting plate 13 is connected to the rear bar 12 by a bolt. The central shaft assembly comprises a central shaft 17, wherein two ends of the central shaft 17 are provided with second ejection heads 15, and the ejection heads at the two ends are respectively connected with a third connecting plate 21 and the rear lever 12.
Wherein, the energy absorption box 9 and the short beam 6 are both hollow cuboid structures. Three first guide grooves are uniformly formed in each of four edges of the crash box 9 perpendicular to the first connecting plate 5. A second guide groove is provided on each of four edges of the short beam 6 perpendicular to the first connection plate 5.
The energy absorption box 9 and the short beam 6 are sheet metal components, the convex top seat 3 and the concave tooth seat 2 are of solid structures, and the energy absorption box 9 and the short beam 6 are cuboids; each edge of the energy absorption box 9 is divided into five parts equally, and the first guide grooves are positioned at 1/5, 2/5, 3/5 and 4/5 on the edges; each edge of the short beam 6 is divided into four parts equally, and the second guide groove is positioned at 2/4-3/4 of the front section.
The vehicle collision energy absorption device based on the elastic broken tooth base comprises a front plate 1, wherein step holes are formed in four corners of the front plate 1, one end face of the step holes is welded to one end of a convex top seat 2, and the other end of the step holes is connected to a vehicle front bumper in a bolt group connection mode; the other end of the convex top seat 2 is connected with the concave tooth seat 3 through a concave-convex one-way connection; the other end of the concave tooth holder 3 is welded on the eighth connecting plate 4; the eighth connecting plate 4 is connected to the first connecting plate 5 through a bolt group; the other end is a convex end which is embedded in the concave tooth holder 9; stepped holes are formed in four corners of the third connecting plate 21, one half end of one end face of the third connecting plate is connected to a seventh connecting plate 10 at one end of the energy absorption box 9 through a bolt group, the other half end face of the third connecting plate is connected to a first connecting disc 19 at one end of the vibration damping device through a bolt group, and the other end face of the third connecting plate is connected to a second connecting plate 11 through a bolt group; a connecting plate VI 8 is welded on the other end face of the energy absorption box 9; the sixth connecting plate 8 is connected to the fifth connecting plate 7 at one end of the short beam 6 through a bolt group; the first connecting plate 5 at the other end of the short beam 6 is connected to the half end position of one end face of the eighth connecting plate 4 through a bolt group; the other half end of the eighth connecting plate 4 is connected to a first connecting plate 5 at one end of the vibration damper through a bolt group; the shock absorber comprises a first connecting disc 19, and a first ejector 23 is welded at one end of the shock absorber; the first plug 23 is a semi-hollow cylinder; the end of the center rod 25 is inserted into the first plug 23; the two ends of the second spring 24 are welded with second spring end blocks 22 which pass through the first connecting discs 19 at the two ends and the symmetrical discs to be limited in the middle position of the shock absorber; the third connecting plate 21 is connected to the second connecting plate 11 through a bolt group; the middle part of the other end face of the second connecting plate 11 is connected with the elastic energy absorption device through a bolt group; the elastic energy absorption device comprises a second connecting disc 13, and a second ejector 15 is welded on the second connecting disc 13; the second plug 15 is a semi-hollow cylinder; the two ends of the central shaft 17 are connected with a second plug 15, a second connecting disc 13 and a first spring end block 14, and the end part of the central shaft 17 is inserted into the second plug 15; the first spring 16 is welded at both ends to the first spring end block 14, and the rear bar 12 is connected to the center compartment position of the vehicle by welding.
The energy absorption box 9 and the short beam 6 are sheet metal components, the convex top seat 2 and the concave tooth seat 3 are of solid structures, wherein the energy absorption box 9 and the short beam 6 are cuboids, each edge of the energy absorption box 9 is equally divided into five parts, and the first guide groove is positioned at 1/5, 2/5, 3/5 and 4/5 of the front section; each edge of the short beam 6 is divided into four parts equally, and the second guide groove is positioned at 2/4 to 3/4 of the front section.
The embodiment of the invention provides a vehicle collision energy absorption method based on an elastic broken tooth base, which comprises the following steps:
when a front bumper of a vehicle collides, energy generated by collision is firstly transmitted to a broken tooth energy absorption device for primary energy absorption;
the energy which cannot be absorbed by the broken tooth energy absorption device is transmitted in the next step, and the damping device absorbs the energy in the second step;
and transferring the energy which cannot be absorbed by the damping device to the elastic energy absorption device to carry out three-stage energy absorption.
The working principle of the vehicle collision energy absorption device based on the elastic broken tooth base provided by the embodiment of the invention is as follows:
the vehicle collision energy absorption device and method based on the elastic broken tooth base is a vehicle collision energy absorption coping scheme provided by combining a vibration reduction two-degree-of-freedom system in a vibration reduction theory with a broken tooth energy absorption structure. When a front bumper of a vehicle collides, energy generated by collision is firstly transmitted to a broken tooth energy absorption device of the vibration and energy absorption device to carry out primary energy absorption, the stage has the characteristics of small rigidity and large energy absorption, and then the energy which cannot be absorbed is transmitted to a parallel combination body of a shock absorber and a damper at the middle part of the shock absorber and the damper in the next step to carry out the absorption of the collision energy of the second part. The structure has the characteristics of low manufacturing cost, simple principle structure, increased energy absorption area, low collision requirement, good energy absorption flexibility effect and the like.
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 (8)
1. The vehicle collision energy absorption device based on the elastic broken tooth base is characterized by comprising a broken tooth energy absorption device, a damping device and an elastic energy absorption device;
the broken tooth energy absorption device comprises a concave tooth seat (2) and a convex top seat (3), wherein the convex end of the convex top seat (3) is embedded in the concave tooth seat (2), the non-embedded end of the concave tooth seat (2) is used for being connected with a front bumper of a vehicle, and the non-embedded end of the convex top seat (3) is connected with a damping device;
the shock absorption device comprises a first connecting plate (5), a shock absorber, a damper and a second connecting plate (11), wherein the first connecting plate (5) and the second connecting plate (11) are arranged in parallel, the shock absorber and the damper are located between the first connecting plate (5) and the second connecting plate (11), two ends of the shock absorber are respectively connected with the first connecting plate (5) and the second connecting plate (11), and two ends of the damper are respectively connected with the first connecting plate (5) and the second connecting plate (11);
the elastic energy absorption device comprises a third connecting plate (21), a first spring (16), a central shaft assembly and a rear lever (12), one end of the central shaft assembly is connected with the third connecting plate (21), the other end of the central shaft assembly is connected with the rear lever (12), the first spring (16) is sleeved on the central shaft assembly, and the third connecting plate (21) is connected with the second connecting plate (11);
the damper comprises a short beam (6) and an energy absorption box (9);
one end of the short beam (6) is connected with the first connecting plate (5), the other end of the short beam is connected with one end of the energy absorption box (9), and the other end of the energy absorption box (9) is connected with the second connecting plate (11);
a fourth connecting plate and a fifth connecting plate (7) are respectively arranged at two ends of the short beam (6), the fourth connecting plate is connected with the first connecting plate (5), and the fifth connecting plate (7) is connected with the energy absorption box (9);
and a sixth connecting plate (8) and a seventh connecting plate (10) are respectively arranged at two ends of the energy absorption box (9), the sixth connecting plate (8) is connected with the short beam (6), and the seventh connecting plate (10) is connected with the second connecting plate (11).
2. The elastic broken tooth base-based vehicle collision energy absorption device according to claim 1, characterized in that the shock absorber comprises a central rod (25), a second spring (24), a first head (23) and a first connecting disc (19);
the two ends of the central rod (25) are symmetrically provided with first jacks (23), a central hole is formed in each first jack (23), the central rod (25) is installed in the central hole in one end of each first jack (23), the other end of each first jack (23) is connected with the connecting disc, the second spring (24) is sleeved on the first jacks (23) in the two ends of the central rod (25), the first jacks (23) in the two ends of the central rod (25) are connected with first connecting discs (19), the first connecting discs (19) in one end of the central rod (25) are connected with the first connecting plates (5), and the first connecting discs (19) in the other end are connected with the second connecting plates (11).
3. The vehicle collision energy absorption device based on the elastic broken tooth base is characterized in that the energy absorption box (9) and the short beam (6) are both hollow cuboid structures.
4. The vehicle collision energy absorbing device based on the elastic broken tooth base is characterized in that the energy absorbing box (9) is uniformly provided with three first guide grooves on each of four edges which are perpendicular to the first connecting plate (5).
5. The elastic broken tooth base-based vehicle collision energy absorption device according to claim 4, wherein a second guide groove is provided on each of four edges of the short beam (6) perpendicular to the first connecting plate (5).
6. The vehicle collision energy absorption device based on the elastic broken tooth base is characterized in that the central shaft assembly comprises a central shaft (17), and second ejecting heads (15) are arranged at two ends of the central shaft (17).
7. The vehicle collision energy absorption device based on the elastic broken tooth base is characterized in that a front plate (1) is arranged at the non-embedding end of the concave tooth base (2), an eighth connecting plate (4) is arranged at the non-embedding end of the convex top base (3), the eighth connecting plate (4) is connected with a damping device, the front plate (1) is of a rectangular structure, and stepped holes are formed in four corners of the rectangular structure.
8. The energy absorption method of the vehicle collision energy absorption device based on the elastic broken tooth base is characterized by comprising the following steps of:
when a front bumper of a vehicle collides, energy generated by collision is firstly transmitted to a broken tooth energy absorption device for primary energy absorption;
the energy which cannot be absorbed by the broken tooth energy absorption device is transmitted in the next step, and the damping device absorbs the energy in the second step;
and transferring the energy which cannot be absorbed by the damping device to the elastic energy absorption device to carry out three-stage energy absorption.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711185925.8A CN107933695B (en) | 2017-11-23 | 2017-11-23 | Vehicle collision energy absorption device based on elastic broken tooth base and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711185925.8A CN107933695B (en) | 2017-11-23 | 2017-11-23 | Vehicle collision energy absorption device based on elastic broken tooth base and method thereof |
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| CN107933695A CN107933695A (en) | 2018-04-20 |
| CN107933695B true CN107933695B (en) | 2020-07-28 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3869017A (en) * | 1972-10-05 | 1975-03-04 | Ford Motor Co | Engine mounting and energy absorbing frame for a motor vehicle |
| CN203438965U (en) * | 2013-08-15 | 2014-02-19 | 北汽福田汽车股份有限公司 | Energy-absorbing structure of vehicle frame and vehicle |
| CN203623570U (en) * | 2014-01-14 | 2014-06-04 | 丹阳兴隆车辆部件有限公司 | Novel vehicle bumper |
| CN204775080U (en) * | 2015-05-21 | 2015-11-18 | 郑泽良 | Front bumper with high -efficient anticollision buffering |
| CN205168397U (en) * | 2015-11-23 | 2016-04-20 | 天津华夏联盛汽车部件有限公司 | Automobile bumper |
| KR101795236B1 (en) * | 2016-04-12 | 2017-11-08 | 현대자동차주식회사 | Impact absorption unit, manufacturing method of impact absorption unit and impact absorb reinforcement |
| CN206344784U (en) * | 2016-12-21 | 2017-07-21 | 郭敏强 | One kind classification damping type pilotless automobile bumper |
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2017
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