CN105922957A - Bidirectional-protection automobile front bumper - Google Patents
Bidirectional-protection automobile front bumper Download PDFInfo
- Publication number
- CN105922957A CN105922957A CN201610454519.6A CN201610454519A CN105922957A CN 105922957 A CN105922957 A CN 105922957A CN 201610454519 A CN201610454519 A CN 201610454519A CN 105922957 A CN105922957 A CN 105922957A
- Authority
- CN
- China
- Prior art keywords
- bumper
- cushion pad
- automobile front
- front beam
- buffering
- 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.)
- Granted
Links
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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
- B60R21/36—Protecting non-occupants of a vehicle, e.g. pedestrians using airbags
-
- 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
- B60R2019/186—Additional energy absorbing means supported on bumber beams, e.g. cellular structures or material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Vibration Dampers (AREA)
Abstract
The invention provides a bidirectional-protection automobile front bumper which comprises a front bumper body. The front bumper body comprises a first bumper and a second bumper which are in front-rear arrangement and are identical in radian, a buffering device is arranged between the first bumper and the second bumper, multiple upper buffering pads are arranged on the rear side of the first bumper, lower buffering pads corresponding to the upper buffering pads are arranged on the front side of the second bumper, the upper buffering pads and the lower buffering pads are in coaxial fit, gaps exist between the upper buffering pads and the lower buffering pads, maximum compression distance of the buffering device is greater than the gaps between the upper buffering pads and the lower buffering pads, and a protection device is arranged on the second bumper and comprises a safety airbag and a distance sensor. Buffering effect of the front bumper is improved through multilayer buffering, damage to passengers and impacted objects is reduced as much as possible during strong impact, damaged degree of an automobile is lowered, and property loss is reduced.
Description
Technical field
The invention belongs to auto parts field, especially relate to the automobile front beam of a kind of two-way prevention.
Background technology
Along with the raising of people's living standard, increasing family has one or many private cars, horse
The vehicle travelled on road also gets more and more, and the vehicle accident occurred therewith the most gradually increases, and very
Many people pursue the pleasant sensation of speed, often have little time brake when having pedestrian or barrier occurs, often result in
Serious vehicle accident, so, existing on automobile all can install some preventers additional, reduce taking advantage of
The injury that causes of member, automobile front beam is a kind of can to absorb and relax the impact in the external world, protect vehicle body
With the preventer of occupant safety, but for existing front bumper, when accident occurs, before automobile
Bumper does not play preferable protective action, and the injury to being hit thing is the biggest, the consequence caused
More serious, for this kind of situation, the present invention proposes the automobile front beam of a kind of two-way prevention, with right
Prior art makes further improvement, increases its buffering effect, and to reduce under fierce shock right as far as possible
Occupant and hit the injury of thing, reduces the damage degree of car, reduces property loss.
Summary of the invention
In view of this, it is contemplated that propose the automobile front beam of a kind of two-way prevention, at high velocity impact
Under reduced as far as possible occupant by its cushioning effect and hit the injury of thing, reduce property loss.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
The automobile front beam of a kind of two-way prevention, including front bumper body, described front bumper includes
Front and back place and have the first bumper and second bumper of identical radian measure, and be provided with buffering between the two
Device, the axis of described buffer unit is vertical with the tangent line of described first bumper, by described buffering dress
Put and described first bumper and described second bumper elasticity are connected；
Multiple upper cushion pad it is provided with, the axle center of described upper cushion pad and described the on rear side of described first bumper
The tangent line of one bumper is mutually perpendicular to, and is provided with corresponding with described upper cushion pad on front side of described second bumper
Lower cushion pad, described upper cushion pad coordinates with described lower cushion pad concentric, and there is gap between the two,
The maximum compression distance of described buffer unit is more than between described upper cushion pad and described lower cushion pad
Gap；
Described second bumper is provided with protection device, and described protection device includes that air bag and distance pass
Sensor, by described range sensor detect between described first bumper and described second bumper away from
Open from controlling described air bag.
Further, described buffer unit includes being fixed on rear side of described first bumper and is distributed in its surrounding
Interior hollow cushion collar and the corresponding buffer bar being fixed on front side of described second bumper, described buffering
The other end of bar is fixed with the fixed block of concentric, and on described fixed block, concentric is provided with spring, described solid
Determine block and described spring stretch into described cushion collar in and along with the compression of described spring makes described buffer bar edge
Its axis direction moves.
Further, described protection device also includes gas generator, described range sensor and described gas
Body generator all electrically connects with described control unit, detects described cushion collar extremely by described range sensor
Described in the distance controlling of described second bumper, gas is filled with described air bag by gas generator.
Further, described second bumper is provided with control unit, described range sensor and described gas
Generator all electrically connects with described control unit, and described control unit electrically connects with automotive control system.
Further, described upper cushion pad and described lower cushion pad all have centre bore along its axis, described
The centre bore pair of multiple first through hole, described first through hole and described lower cushion pad is had on second bumper
Should.
Further, described first bumper and described second bumper mainly use rigid plastics, described
Buffer unit is mainly metal material.
Further, described second bumper two ends all have the second through hole, will by described second through hole
Described front bumper is fixed.
Further, described upper cushion pad and described lower cushion pad are respectively equipped with cushion block, and described cushion block
It is that profile of tooth coordinates in contact portion.
Relative to prior art, the automobile front beam of a kind of two-way prevention of the present invention has following
Advantage:
(1) automobile front beam of a kind of two-way prevention of the present invention, is adding buffering effect
While decrease occupant and hit the two-way injury of thing, reduce property loss.
(2) protection device of the present invention also includes gas generator, described range sensor and institute
State gas generator all to electrically connect with described control unit, detect described buffering by described range sensor
Gas is filled with described air bag by gas generator described in the distance controlling of set extremely described second bumper.
When shock reaches to a certain degree, air bag is stretched out by the gap of front cover and covers about, controls
System processed can start gas generator to airbag inflated, not only protects car body but also reduce being hit thing
The injury of secondary collision.
(3) the second bumper of the present invention is provided with control unit, and described range sensor is with described
Gas generator all electrically connects with described control unit, and described control unit is electrically connected with automotive control system
Connect.Automatically controlled by control system, make a response rapidly under instantaneous collision, efficient quick.
(4) upper cushion pad of the present invention and described lower cushion pad all have centre bore along its axis,
The center of multiple first through hole, described first through hole and described lower cushion pad is had on described second bumper
Hole is corresponding.Reduce the weight of bumper, to reach more preferable effect.
(5) the first bumper of the present invention and described second bumper mainly use rigid plastics,
Described buffer unit is mainly metal material.The deformation that rigid plastics is less under low speed collision can be adjusted
Return former state, under fierce collision, reach cushioning effect by smashing, and less to being collided injury.
(6) the second bumper two ends of the present invention all have the second through hole, lead to by described second
Described front bumper is fixed by hole.It is fixed in automotive front crossbeam through described through hole by bolt, with
Protection car body.
(7) it is respectively equipped with cushion block on upper cushion pad of the present invention and described lower cushion pad, and described
Cushion block is that profile of tooth coordinates in contact portion.The abrasion to cushion pad is reduced by increasing cushion block, readily replaceable.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, the present invention's
Schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.?
In accompanying drawing:
Fig. 1 is the vehicle front bumper arrangement schematic diagram of a kind of two-way prevention described in the embodiment of the present invention；
Fig. 2 is the bumper portion schematic diagram described in the embodiment of the present invention；
Fig. 3 is the block portion schematic diagram described in the embodiment of the present invention.
Description of reference numerals:
1-the first bumper；2-buffer unit；3-range sensor；4-the second bumper；The upper buffering of 5-
Pad；Cushion pad under 6-；7-air bag；8-gas generator；9-the second through hole；10-the first through hole；
11-cushion block；201-cushion collar；202-spring；203-fixed block；204-buffer bar.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the spy in embodiment
Levy and can be mutually combined.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ",
On " ", D score, "front", "rear", "left", "right", " vertically ", " level ",
" push up ", " end ", " interior ", the orientation of the instruction such as " outward " or position relationship be for based on shown in accompanying drawing
Orientation or position relationship, be for only for ease of the description present invention and simplifying and describe rather than instruction or dark
Show that device or the element of indication must have specific orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.Additionally, term " first ", " second " etc. are only used for describing
Purpose, and it is not intended that instruction or hint relative importance or implicit indicate indicated technical characteristic
Quantity.Thus, the feature defining " first ", " second " etc. can be expressed or impliedly wrap
Include one or more this feature.In describing the invention, except as otherwise noted, " multiple "
It is meant that two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term
" install ", " being connected ", " connection " should be interpreted broadly, and connect, also for example, it may be fixing
Can be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can
Being to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.
For the ordinary skill in the art, can understand that above-mentioned term is in the present invention by concrete condition
In concrete meaning.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
A kind of automobile front beam of two-way prevention, including front bumper body, described before
Bumper includes the first bumper 1 and the second bumper 4 front and back placing and having identical radian measure, and two
The tangent line of buffer unit 2, the axis of described buffer unit 2 and described first bumper 1 it is provided with between person
Vertically, by described buffer unit 2 by elastic even to described first bumper 1 and described second bumper 4
Connect；
Be provided with multiple upper cushion pad 5 on rear side of described first bumper 1, the axle center of described upper cushion pad 5 with
The tangent line of described first bumper 1 is mutually perpendicular to, and is provided with slow with described on front side of described second bumper 4
The lower cushion pad 6 of die head 5 correspondence, described upper cushion pad 5 coordinates with described lower cushion pad 6 concentric,
And there is gap between the two, the maximum compression distance of described buffer unit 2 is more than described upper cushion pad 5
And the gap between described lower cushion pad 6；
Described second bumper 4 is provided with protection device, described protection device include air bag 7 and away from
From sensor 3, detect described first bumper 1 and described second insurance by described range sensor 3
Described in distance controlling between thick stick 4, air bag 7 is opened.
Wherein, described buffer unit 2 includes being fixed on rear side of described first bumper 1 and is distributed in its surrounding
Interior hollow cushion collar 201 and the corresponding buffer bar 204 being fixed on front side of described second bumper 4,
The other end of described buffer bar 204 is fixed with the fixed block 203 of concentric, same on described fixed block 203
Axle center is provided with spring 202, and described fixed block 203 and described spring 202 stretch in described cushion collar 201
And along with the compression of described spring 202 makes described buffer bar 204 move along its axis direction.
Wherein, described protection device also includes gas generator 8, described range sensor 3 and described gas
Body generator 8 all electrically connects with described control unit, detects described buffering by described range sensor 3
Set 201 to described second bumper 4 distance controlling described in gas generator 8 gas is filled with described peace
Full air bag 7.
Wherein, described second bumper 4 is provided with control unit, described range sensor 3 and described gas
Generator 8 all electrically connects with described control unit, and described control unit electrically connects with automotive control system.
Wherein, described upper cushion pad 5 all has centre bore with described lower cushion pad 6 along its axis, described
Multiple first through hole 10, described first through hole 10 and described lower cushion pad 6 is had on second bumper 4
Centre bore corresponding.
Wherein, described first bumper 1 and described second bumper 4 mainly use rigid plastics, described
Buffer unit 2 predominantly metal material.
Wherein, described second bumper 4 two ends all have the second through hole 9, by described second through hole 9
Described front bumper is fixed.
Wherein, described upper cushion pad 5 and described lower cushion pad 6 are respectively equipped with cushion block 11, and described pad
Block 11 is that profile of tooth coordinates in contact portion.
The application note of the present invention: the automobile front beam of a kind of two-way prevention of the present invention is passed through
The second through hole 9 on second bumper 4 is fixed on automotive front crossbeam, and makes on the second bumper 4
Air bag 7 is corresponding with the gap of front cover for vehicle, control unit is electrically connected with the control system of automobile,
It is installed in automotive front end with this；When running into less collision accident, itself is by rigid plastics system
Become, no matter to occupant or the injury of the knocked is all without too big, as long as will be hit by the characteristic of itself
Again replication at deformation；When collision is relatively fierce, impulsive force is bigger, its buffer unit can be made
Spring 202 in 2 compresses, and promotes the first bumper 1 to move to the second bumper 4, upper cushion pad 5
Moving closer to lower cushion pad 6 and contact compression, it is right to be reduced further by the double buffering of both
Occupant and the injury of the knocked, owing to impulsive force is relatively big, the front bumper of rigid plastics is inevitably
Damage, basic simply the first bumper 1 damaged, in Renewal process, only need to be individually replaced the first insurance
Thick stick, decreases waste, has saved maintenance cost；When running into the strongest shock, upper buffering
Pad 5 and lower cushion pad 6 have been compressed to the limit, and the distance-sensor 3 on the second bumper 4 detects slow
After punching set 201 reaches the minimum range arranged, signal passing to control unit at once, control unit is immediately
Sending order and start gas generator 8, air bag 7 is stretched out by protecgulum gap, gas moment therewith
Being filled with air bag 7, the air bag 7 being filled with gas is placed in around protecgulum, under preventing high intensity from clashing into,
As the knocked occurs secondary impact, to reduce the secondary injury to it.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within the spirit of invention and principle, any modification, equivalent substitution and improvement etc. made, should be included in
Within protection scope of the present invention.
Claims (8)
1. the automobile front beam of a two-way prevention, it is characterised in that: include front bumper body,
Described front bumper includes the first bumper and the second bumper front and back placing and having identical radian measure, and
Being provided with buffer unit between the two, the axis of described buffer unit hangs down with the tangent line of described first bumper
Directly, by described buffer unit, described first bumper and described second bumper elasticity are connected；
Multiple upper cushion pad it is provided with, the axle center of described upper cushion pad and described the on rear side of described first bumper
The tangent line of one bumper is mutually perpendicular to, and is provided with corresponding with described upper cushion pad on front side of described second bumper
Lower cushion pad, described upper cushion pad coordinates with described lower cushion pad concentric, and there is gap between the two,
The maximum compression distance of described buffer unit is more than between described upper cushion pad and described lower cushion pad
Gap；
Described second bumper is provided with protection device, and described protection device includes that air bag and distance pass
Sensor, by described range sensor detect between described first bumper and described second bumper away from
Open from controlling described air bag.
The automobile front beam of a kind of two-way prevention the most according to claim 1, it is characterised in that:
Described buffer unit includes being fixed on the interior hollow buffering being distributed in its surrounding on rear side of described first bumper
Set and the corresponding buffer bar being fixed on front side of described second bumper, the other end of described buffer bar is solid
Surely having the fixed block of concentric, on described fixed block, concentric is provided with spring, described fixed block and described bullet
In spring stretches into described cushion collar and along with the compression of described spring makes described buffer bar transport along its axis direction
Dynamic.
The automobile front beam of a kind of two-way prevention the most according to claim 1, it is characterised in that:
Described protection device also includes gas generator, and described range sensor and described gas generator are all and institute
State control unit electrical connection, detect described cushion collar to described second bumper by described range sensor
Distance controlling described in gas generator gas is filled with described air bag.
The automobile front beam of a kind of two-way prevention the most according to claim 3, it is characterised in that:
Described second bumper is provided with control unit, described range sensor with described gas generator all with described
Control unit electrically connects, and described control unit electrically connects with automotive control system.
The automobile front beam of a kind of two-way prevention the most according to claim 1, it is characterised in that:
Described upper cushion pad and described lower cushion pad all have centre bore along its axis, and described second bumper is opened
Having multiple first through hole, described first through hole is corresponding with the centre bore of described lower cushion pad.
The automobile front beam of a kind of two-way prevention the most according to claim 1, it is characterised in that:
Described first bumper and described second bumper mainly use rigid plastics, and described buffer unit is predominantly
Metal material.
The automobile front beam of a kind of two-way prevention the most according to claim 1, it is characterised in that:
Described second bumper two ends all have the second through hole, by described second through hole, described front bumper is solid
Fixed.
The automobile front beam of a kind of two-way prevention the most according to claim 1, it is characterised in that:
It is respectively equipped with cushion block on described upper cushion pad and described lower cushion pad, and described cushion block is tooth in contact portion
Shape coordinates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610454519.6A CN105922957B (en) | 2016-06-17 | 2016-06-17 | A kind of automobile front beam of two-way prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610454519.6A CN105922957B (en) | 2016-06-17 | 2016-06-17 | A kind of automobile front beam of two-way prevention |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105922957A true CN105922957A (en) | 2016-09-07 |
| CN105922957B CN105922957B (en) | 2019-04-26 |
Family
ID=56831868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610454519.6A Active CN105922957B (en) | 2016-06-17 | 2016-06-17 | A kind of automobile front beam of two-way prevention |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105922957B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106741386A (en) * | 2016-11-17 | 2017-05-31 | 广西大学 | A kind of electric vehicle anti-collision device |
| CN108622009A (en) * | 2018-06-29 | 2018-10-09 | 宁波辉励铭诚汽车零部件有限公司 | A kind of automobile safety protector |
| CN112693414A (en) * | 2020-04-07 | 2021-04-23 | 西华大学 | Method for protecting active lifting of front bumper during rear-end collision of electric car |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2285225Y (en) * | 1997-08-11 | 1998-07-01 | 许万禄 | Energy-absorption collision-damping bumper for car |
| GB2400352A (en) * | 2003-04-09 | 2004-10-13 | Autoliv Dev | Pedestrian detecting system for a motor vehicle |
| CN2792877Y (en) * | 2005-04-30 | 2006-07-05 | 程玉富 | Double bumper of vehicle |
| CN201685777U (en) * | 2010-07-09 | 2010-12-29 | 湖北世纪中远车辆有限公司 | Automobile anti-collision & energy-absorbing safety protection device |
| CN203157918U (en) * | 2013-04-23 | 2013-08-28 | 董廷秀 | Car soft protective device |
| JP2014083956A (en) * | 2012-10-23 | 2014-05-12 | Denso Corp | Vehicular collision sensing system |
| CN103847681A (en) * | 2012-12-05 | 2014-06-11 | 现代自动车株式会社 | External airbag apparatus |
| CN204736793U (en) * | 2015-04-15 | 2015-11-04 | 天津提爱思塑料制品有限公司 | Car rear bumper |
| CN205871964U (en) * | 2016-06-17 | 2017-01-11 | 天津中盛实业有限公司 | Car front bumper of two -way protection |
-
2016
- 2016-06-17 CN CN201610454519.6A patent/CN105922957B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2285225Y (en) * | 1997-08-11 | 1998-07-01 | 许万禄 | Energy-absorption collision-damping bumper for car |
| GB2400352A (en) * | 2003-04-09 | 2004-10-13 | Autoliv Dev | Pedestrian detecting system for a motor vehicle |
| CN2792877Y (en) * | 2005-04-30 | 2006-07-05 | 程玉富 | Double bumper of vehicle |
| CN201685777U (en) * | 2010-07-09 | 2010-12-29 | 湖北世纪中远车辆有限公司 | Automobile anti-collision & energy-absorbing safety protection device |
| JP2014083956A (en) * | 2012-10-23 | 2014-05-12 | Denso Corp | Vehicular collision sensing system |
| CN103847681A (en) * | 2012-12-05 | 2014-06-11 | 现代自动车株式会社 | External airbag apparatus |
| CN203157918U (en) * | 2013-04-23 | 2013-08-28 | 董廷秀 | Car soft protective device |
| CN204736793U (en) * | 2015-04-15 | 2015-11-04 | 天津提爱思塑料制品有限公司 | Car rear bumper |
| CN205871964U (en) * | 2016-06-17 | 2017-01-11 | 天津中盛实业有限公司 | Car front bumper of two -way protection |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106741386A (en) * | 2016-11-17 | 2017-05-31 | 广西大学 | A kind of electric vehicle anti-collision device |
| CN108622009A (en) * | 2018-06-29 | 2018-10-09 | 宁波辉励铭诚汽车零部件有限公司 | A kind of automobile safety protector |
| CN112693414A (en) * | 2020-04-07 | 2021-04-23 | 西华大学 | Method for protecting active lifting of front bumper during rear-end collision of electric car |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105922957B (en) | 2019-04-26 |
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