CN114851999B - New energy automobile energy-absorbing bumper - Google Patents
New energy automobile energy-absorbing bumper Download PDFInfo
- Publication number
- CN114851999B CN114851999B CN202210613210.2A CN202210613210A CN114851999B CN 114851999 B CN114851999 B CN 114851999B CN 202210613210 A CN202210613210 A CN 202210613210A CN 114851999 B CN114851999 B CN 114851999B
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- box
- bumper
- absorbing
- automobile
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 24
- 239000011229 interlayer Substances 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 239000003814 drug Substances 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 230000002787 reinforcement Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- PXIPVTKHYLBLMZ-UHFFFAOYSA-N Sodium azide Chemical compound [Na+].[N-]=[N+]=[N-] PXIPVTKHYLBLMZ-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000005192 partition Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
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
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R19/20—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact containing mainly gas or liquid, e.g. inflatable
- B60R19/205—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact containing mainly gas or liquid, e.g. inflatable inflatable in the direction of an obstacle upon impending impact, e.g. using air bags
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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
- B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
-
- 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
- B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
- B60R19/28—Metallic springs
-
- 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
- B60R19/38—Arrangements for mounting bumpers on vehicles adjustably or movably mounted, e.g. horizontally displaceable for securing a space between parked 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
- B60R19/44—Bumper guards
-
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a new energy automobile energy-absorbing bumper, which relates to the field of energy-absorbing bumpers and comprises a bumper shell, wherein the bumper shell is arranged at the tail part of an automobile, an inner bumper is arranged on the inner side surface of the bumper shell and is clung to the inner side surface of the bumper shell, the inner bumper is of a hollow structure, an electric telescopic device is arranged in the middle of the inner bumper, the tail ends of the electric telescopic device are slidably connected in a trigger box, the two sides of the trigger box are respectively connected in an energy-absorbing box reinforcing device through connecting rods, and the electric telescopic device can drive the connecting rods and the energy-absorbing box reinforcing device in a mode of starting the trigger box so that the energy-absorbing box can absorb energy.
Description
Technical Field
The invention relates to the field of energy-absorbing bumpers, in particular to a new energy automobile energy-absorbing bumper.
Background
With the rapid increase of the automobile conservation amount, the road traffic safety problem has become an important problem of concern of governments and society of various countries, and most of road traffic fatal accidents are caused by driver passing, sudden braking caused by driver distraction often occurs, and in recent years, new energy automobiles with the abnormal army protrusions are more difficult to brake after the automobile speed rises because of rapid acceleration of the automobiles, so that various automobile collision avoidance control systems are designed by various automobile manufacturers, the front situation of the automobile is monitored at any time during driving, and the automobile is braked in time when in danger, and although the damage to passers-by in the driving process is effectively avoided, rear-end collision accidents caused by rear automobile to front automobile are also easy to be caused by automobile emergency stop caused by collision avoidance control, damage is caused to front automobile bodies, and front and rear automobile losses are caused.
Disclosure of Invention
The invention aims to provide a new energy automobile energy absorbing bumper to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a new energy automobile energy-absorbing bumper, includes the bumper shell, the afterbody at the car is installed to the bumper shell, be equipped with interior bumper on the medial surface of bumper shell, the medial surface of bumper shell is hugged closely to interior bumper, interior bumper is hollow structure, the intermediate position of interior bumper is equipped with electric telescopic device, electric telescopic device's end sliding connection is in triggering the box, triggering the both sides of box and connecting in energy-absorbing box reinforcing apparatus through the connecting rod respectively, electric telescopic device can drive connecting rod and energy-absorbing box reinforcing apparatus with the mode that starts triggering the box, and then makes the energy-absorbing box can absorb energy.
Preferably, the outermost side of the bumper shell is provided with an interlayer, foam aluminum is filled in the interlayer, and an elastic support column is further arranged in the interlayer.
Preferably, the two ends of the inner bumper are curved surfaces, the inner side surface of the inner bumper is provided with a mounting hole, and the mounting hole is in sealing connection with the energy absorption box.
Preferably, the electric telescopic device comprises an electric push rod, a connecting bracket, a spring, a fixed column and a telescopic rod, wherein the electric push rod is installed on the chassis, an output shaft of the electric push rod is connected to the connecting bracket, buckles are arranged on two sides of the top of the connecting bracket, a spring installation groove is formed in each buckle, the spring is installed in each spring installation groove, one end of the spring is propped in each buckle, the other end of the spring is propped against a wing-shaped boss of the fixed column, the bottom of the fixed column is fixed on the chassis of the automobile, the telescopic rod is connected with the connecting bracket through a movable connecting seat, clamping grooves are formed in two side faces of the movable connecting seat, the buckles are clamped in the clamping grooves, an impact plate is further arranged at the tail end of the telescopic rod, and an impact table is arranged on the impact plate;
The wing-shaped boss is welded with the fixed column for forming, and an anti-skid groove is arranged on the surface of the wing-shaped boss, which is contacted with the spring;
Preferably, the triggering box comprises a box body, a guide chute, a safety separation piece, a sealing box and guide groove side walls, wherein the box body is fixed in the inner bumper, the sealing box is arranged in the box body, the guide chute is arranged on the upper surface of the sealing box, the safety separation piece is arranged in the sealing box, a medicine bag is arranged between the safety separation piece and the guide groove side walls, and the guide groove side walls are positioned at two ends of the box body;
the two side surfaces of one end of the sealing box, which is far away from the medicine bag, are provided with air outlets;
the outer surface of the side wall of the guide groove is provided with a guide groove, and the guide surfaces of the guide groove are mirror surfaces;
And a gas channel is arranged between the bottom surface of the safety separation sheet and the inner bottom surface of the sealing box.
Preferably, the connecting rod comprises a transverse connecting rod, an energy absorption box connecting end and a sliding sheet, the transverse connecting rod is connected with the energy absorption box connecting end in a welded mode, the sliding sheet is connected between the transverse connecting rod and the guide groove, an air bag connected to the inner side face of the box body is arranged on the outer end face of the end portion of the sliding sheet, and the air bag is connected with the air outlet hole through an air pipe.
Preferably, the energy-absorbing box reinforcing device comprises a cross connecting frame, a polygonal bracket and a reinforcing column, wherein the cross connecting frame is connected to the tail end of the connecting end of the energy-absorbing box, the end point of the cross connecting frame is connected to the inner side surface of the polygonal bracket, and the reinforcing column is arranged on the outer side surface of the polygonal bracket;
And a plurality of stress notches are formed in the inner side wall of the polygonal support.
Preferably, the energy-absorbing box comprises an energy-absorbing box shell and a mounting plate, wherein a crumple guide groove is formed in the energy-absorbing box shell, a crumple guide hole is formed in the crumple guide groove, a reinforcing column is connected in the crumple guide hole in a sliding mode, and the energy-absorbing box shell is mounted on a longitudinal beam of the new energy automobile through the mounting plate.
Compared with the prior art, the invention has the beneficial effects that:
1. When the automobile is in slight rear-end collision, the invention can absorb the collision energy through the arranged bumper shell, foam aluminum in the interlayer and the elastic support column, so as to protect the automobile body;
2. When the strong collision of the automobile occurs, the electric telescopic device and the trigger box can be excited, so that the reinforcing column for reinforcing the energy-absorbing box is withdrawn from the energy-absorbing box, a structure which is more easy to collapse is generated on the energy-absorbing box, the energy absorption and the collapse of the energy-absorbing box are facilitated, and the effect of protecting the automobile body is further achieved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the present invention mounted on a vehicle body;
FIG. 3 is a schematic cross-sectional view of the present invention;
FIG. 4 is a schematic view of the internal structure of the present invention;
FIG. 5 is a schematic view of an electric telescopic device according to the present invention;
FIG. 6 is a schematic view of a partial cross-sectional structure of the telescopic device and trigger box of the present invention;
FIG. 7 is an enlarged view of the structure at C in FIG. 6;
FIG. 8 is a schematic view of a connecting rod and crash box reinforcement structure according to the present invention;
FIG. 9 is an enlarged view of the structure at B in FIG. 8;
FIG. 10 is a schematic view of a seal box and vent structure;
FIG. 11 is a schematic diagram of a crash box structure.
In the figure: 1-a bumper housing; 11-elastomeric support columns;
2-an inner bumper; 21-mounting holes;
3-an electric telescopic device; 31-an electric push rod; 32-connecting a bracket; 321-a buckle; 33-a spring; 34-fixing the column; 341-wing-shaped bosses; 35-a telescopic rod; 36-a movable connecting seat; 361-a clamping groove; 37-strike plate; 371—strike table;
4-triggering a box; 41-a box body; 42-a guide chute; 43-safety barrier sheet; 44-sealing the box; 441-air outlet holes; 45-channel side walls; 451-a guide groove; 46-sachets;
5-connecting rods; 51-a transverse link; 52-the connecting end of the energy absorption box; 53-sliding sheets; 54-an air bag;
6-a reinforcing device of the energy absorption box; 61-cross connecting frame; 62-polygonal stent; 621-stress notch; 63-reinforcing columns;
7-an energy absorption box; 71-a crash box housing; 72-mounting plates; 73-collapsing guide grooves; 74-collapsing guide holes.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 11, the present invention provides a technical solution: the utility model provides a new energy automobile energy-absorbing bumper, includes bumper shell 1, bumper shell 1 installs the afterbody at the car, be equipped with interior bumper 2 on the medial surface of bumper shell 1, interior bumper 2 hugs closely the medial surface of bumper shell 1, interior bumper 2 is hollow structure, the intermediate position of interior bumper 2 is equipped with electric telescopic device 3, electric telescopic device 3's end sliding connection is in trigger box 4, trigger box 4's both sides are connected in energy-absorbing box reinforcing apparatus 6 through connecting rod 5 respectively, electric telescopic device 3 can drive connecting rod 5 and energy-absorbing box reinforcing apparatus 6 with the mode of starting trigger box 4, and then make energy-absorbing box 7 can absorb energy.
In this embodiment, the outermost side of the bumper shell 1 is provided with an interlayer, the interlayer is filled with aluminum foam, and the interlayer is also provided with elastomeric support columns 11, so that the interlayer filled with aluminum foam can effectively buffer load fluctuation, and meanwhile, as aluminum foam is a good energy absorbing material, the energy absorbing effect of the bumper is further improved, and in the event of slight rear-end collision, the damage of the collision can be well eliminated only through the aluminum foam and the elastomeric support columns 11.
In this embodiment, the two ends of the inner bumper 2 are curved surfaces, the inner side surface of the inner bumper 2 is provided with a mounting hole 21, and the mounting hole 21 is in sealing connection with the energy absorption box 7.
In this embodiment, the electric telescopic device 3 includes an electric push rod 31, a connecting bracket 32, a spring 33, a fixed column 34 and a telescopic rod 35, the electric push rod 31 is mounted on a chassis, an output shaft of the electric push rod 31 is connected to the connecting bracket 32, two sides of the top of the connecting bracket 32 are respectively provided with a buckle 321, a spring mounting groove is arranged in each buckle 321, the spring 33 is mounted in each spring mounting groove, one end of the spring 33 is propped against each buckle 321, one end of the spring 33 is propped against a wing-shaped boss 341 of the fixed column 34, the bottom of the fixed column 34 is fixed on the chassis of the automobile, the telescopic rod 35 is connected with the connecting bracket 32 through a movable connecting seat 36, two sides of the movable connecting seat 36 are respectively provided with a clamping groove 361, each buckle 321 is clamped in each clamping groove 361, the tail end of the telescopic rod 35 is further provided with a striking plate 37, and the striking plate 37 is provided with a striking table 371;
The wing-shaped boss 341 is welded with the fixed column 34, an anti-slip groove is arranged on the surface, which is contacted with the spring 33, of the wing-shaped boss 341, the electric push rod 31 is connected to a braking system of an automobile, when the whole automobile controller of the new energy automobile detects that the automobile is in a sudden braking state, the electric push rod 31 is controlled to push out the connecting support 32 and the telescopic rod 35 by a minimum distance (about 5 mm), the top end of the telescopic rod 35 is propped against the inner wall of the inner bumper 2, and when the automobile generates slight rear-end collision, the telescopic rod 35 is pulled back to the original position by the electric push rod 31 due to the energy absorption effect of foam aluminum and the elastic support column 11 in the interlayer, the force which is conducted through the bumper shell 1 and the inner bumper 2 and acts on the telescopic rod 35 is insufficient to enable the telescopic rod 35 to flush out of the clamping groove 361 and the limiting effect of the clamping buckle 321.
In this embodiment, the trigger box 4 includes a box body 41, a guide chute 42, a safety partition piece 43, a sealing box 44, and a guide groove side wall 45, wherein the box body 41 is fixed in the inner bumper 2, the sealing box 44 is disposed in the box body 41, the guide chute 42 is disposed on the upper surface of the sealing box 44, the safety partition piece 43 is disposed in the sealing box 44, a medicine bag 46 is disposed between the safety partition piece 43 and the side wall of the sealing box 44, and the guide groove side wall 45 is disposed at two ends of the box body 41;
the two sides of the end of the sealing box 44 far away from the medicine bag 46 are provided with air outlet holes 441;
The outer surface of the side wall 45 of the guide groove is provided with a guide groove 451, and the guide surfaces of the guide groove 451 are mirror surfaces;
a gas channel is arranged between the bottom surface of the safety barrier sheet 43 and the inner bottom surface of the sealing box 44;
When strong collision occurs, the collision energy exceeds the maximum load of the foamed aluminum and the elastic support column 11, the energy directly acts on the telescopic rod 35, and when the energy is excessive, the telescopic rod 35 and the movable connecting seat 36 exceed the limit of the clamping groove 361 and the clamping buckle 321, so that the telescopic rod 35 and the movable connecting seat 36 are separated from the connecting support 32, the electric push rod 31 is protected, the separated telescopic rod 35 is driven by the excessive energy, the collision table 371 can collide with the safety barrier sheet 43 to directly collide with the medicine bag 46, and the sodium azide in the medicine bag 46 is triggered, so that a large amount of nitrogen is generated in a short time.
In this embodiment, the connecting rod 5 includes a transverse connecting rod 51, an energy-absorbing box connecting end 52 and a sliding sheet 53, the transverse connecting rod 51 is welded to the energy-absorbing box connecting end 52, the sliding sheet 53 is connected between the transverse connecting rod 51 and the guiding groove 451, an air bag 54 connected to the inner side surface of the box body 41 is disposed on the outer end surface of the end portion of the sliding sheet 53, the air bag 54 is connected to the air outlet 441 through an air pipe, the air bag 54 is filled with a large amount of generated nitrogen, and the transverse connecting rod 51 and the energy-absorbing box connecting end 52 are moved through rapid expansion of the air bag 54.
In this embodiment, the energy-absorbing box reinforcement device 6 includes a cross connection frame 61, a polygonal bracket 62, and a reinforcement column 63, wherein the cross connection frame 61 is connected to the end of the energy-absorbing box connection end 52, the end point of the cross connection frame 61 is connected to the inner side of the polygonal bracket 62, and the reinforcement column 63 is mounted on the outer side of the polygonal bracket 62;
The polygonal bracket 62 is provided with a plurality of stress notches 621 on the inner side wall, and the connection end 52 of the energy-absorbing box pushes the word connection frame 61, the polygonal bracket 62 and the reinforcement column 63 to move.
In this embodiment, the energy-absorbing box 7 includes the energy-absorbing box shell 71 and the mounting plate 72, the energy-absorbing box shell 71 is provided with the crumple guiding groove 73, the crumple guiding groove 73 is provided with the crumple guiding hole 74, the crumple guiding hole 74 is slidably connected with the reinforcement post 63, the energy-absorbing box shell 71 is mounted on the longitudinal beam of the new energy automobile through the mounting plate 72, the fixation post 63 is originally inserted into the crumple guiding hole 74 on the crumple guiding groove 73, after the breaking away, the position of the crumple guiding groove 73 and the crumple guiding hole 74 is weaker due to the fact that the whole energy-absorbing box 7 is provided with the crumple guiding groove 73, the energy-absorbing box can absorb energy quickly, crumple, so that the car body is protected, when the reinforcement post 63 does not break away from the crumple guiding hole 74, the whole energy-absorbing box 7 can obtain better strength due to the supporting effect of the reinforcement post 63, and deformation is avoided in long-time normal driving or slight collision.
Working principle: in normal driving, when the automobile is suddenly braked, the electric push rod 31 connected with the brake system of the automobile pushes the telescopic rod 35 out of the connecting bracket 32 for a very small distance to enable the top end of the telescopic rod 35 to prop against the inner wall of the inner bumper 2, and at the moment, if no rear-end collision occurs, the telescopic rod 35 is pulled back by the electric push rod 31; if a slight collision happens, the force conducted by the bumper shell 1 and the inner bumper 2 and acting on the telescopic rod 35 is insufficient due to the energy absorption effect of the foam aluminum in the interlayer and the elastic support column 11, so that the telescopic rod 35 is punched out of the clamping groove 361 and the limiting effect of the clamping buckle 321, and after the sudden braking and the collision stop, the electric push rod 31 pulls the telescopic rod 35 back to the original position; if the collision is strong, the telescopic rod 35 and the movable connecting seat 36 can exceed the limit of the clamping groove 361 and the clamping buckle 321, so that the telescopic rod 35 and the movable connecting seat 36 are separated from the connecting support 32, the electric push rod 31 is protected, the separated telescopic rod 35 is driven by excessive energy, the collision table 371 collides with the safety separation sheet 43 to directly collide with the medicine bag 46, sodium azide in the medicine bag 46 is triggered, a large amount of nitrogen is generated in a very short time, the air bag 54 is filled with the generated large amount of nitrogen, the transverse connecting rod 51 and the energy-absorbing box connecting end 52 are enabled to move through the rapid expansion of the air bag 54, the energy-absorbing box connecting end 52 can push the word connecting frame 61, the polygonal support 62 and the reinforcing column 63 to move, the moving reinforcing column 63 is separated from the crumple guide hole 74, the position of the crumple guide hole 73 and the crumple guide hole 74 are arranged on the whole energy-absorbing box 7, the car body is protected, the inside wall of the energy-absorbing polygonal support 62 is provided with a plurality of stress notches 621, and the crumple stress notch 621 is formed in the inside wall of the polygonal support 62, and the crumple stress is prevented from being crumpled together when the crumple box 7 is blocked.
Based on the above, when the automobile is in a slight rear-end collision, the invention can absorb the collision energy through the arranged bumper shell, foam aluminum in the interlayer and the elastic support column, so as to protect the automobile body; when the strong collision of the automobile occurs, the electric telescopic device and the trigger box can be excited, so that the reinforcing column for reinforcing the energy-absorbing box is withdrawn from the energy-absorbing box, a structure which is more easy to collapse is generated on the energy-absorbing box, the energy absorption and the collapse of the energy-absorbing box are facilitated, and the effect of protecting the automobile body is further achieved.
It will be appreciated by those skilled in the art that the present invention can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the invention or equivalents thereto are intended to be embraced therein.
Claims (6)
1. The utility model provides a new energy automobile energy-absorbing bumper which characterized in that: the automobile energy absorbing device comprises a bumper shell (1), wherein the bumper shell (1) is arranged at the tail part of an automobile, an inner bumper (2) is arranged on the inner side surface of the bumper shell (1), the inner bumper (2) is clung to the inner side surface of the bumper shell (1), the inner bumper (2) is of a hollow structure, an electric telescopic device (3) is arranged in the middle of the inner bumper (2), the tail end of the electric telescopic device (3) is slidably connected in a trigger box (4), two sides of the trigger box (4) are respectively connected in an energy absorbing box reinforcing device (6) through connecting rods (5), and the electric telescopic device (3) can drive the connecting rods (5) and the energy absorbing box reinforcing device (6) in a mode of starting the trigger box (4), so that energy absorbing boxes (7) can absorb energy;
the electric telescopic device (3) comprises an electric push rod (31), a connecting bracket (32), a spring (34), a fixing column (34) and a telescopic rod (35), wherein the electric push rod (31) is installed on a chassis, an output shaft of the electric push rod (31) is connected to the connecting bracket (32), buckles (321) are arranged on two sides of the top of the connecting bracket (32), a spring installation groove is formed in each buckle (321), the spring (33) is installed in each spring installation groove, one end of the spring (33) is propped against each buckle (321), the other end of the spring is propped against a wing-shaped boss (341) of the fixing column (34), the bottom of the fixing column (34) is fixed on an automobile chassis, a clamping groove (361) is formed in each side face of the corresponding telescopic rod (35) and the corresponding connecting bracket (32), the buckles (321) are clamped in the corresponding clamping grooves, a striking plate (37) is further arranged at the tail end of the telescopic rod (35), and the striking plate (37) is arranged on the striking plate (361);
the wing-shaped boss (341) is welded with the fixed column (34) for forming, and an anti-skid groove is arranged on the contact surface of the spring (33) of the wing-shaped boss (341);
The triggering box (4) comprises a box body (41), a guide chute (42), safety separation sheets (43), a sealing box (44) and guide groove side walls (45), wherein the box body (41) is fixed in an inner bumper (2), the sealing box (44) is arranged in the box body (41), the guide chute (42) is arranged on the upper surface of the sealing box (44), the safety separation sheets (43) are arranged in the sealing box (44), medicine bags (46) are arranged between the side walls of the safety separation sheets (43) and the sealing box (44), and the guide groove side walls (45) are positioned at two ends of the box body (41);
The two side surfaces of one end of the sealing box (44) far away from the medicine bag (46) are provided with air outlet holes (441);
The outer surface of the side wall (45) of the guide groove is provided with the guide groove (451), and the guide surfaces of the guide groove (451) are mirror surfaces;
a gas passage is arranged between the bottom surface of the safety barrier sheet (43) and the inner bottom surface of the sealing box (44).
2. The energy absorbing bumper of a new energy automobile of claim 1, wherein: the outermost side of the bumper shell (1) is provided with an interlayer, foam aluminum is filled in the interlayer, and an elastic support column (11) is further arranged in the interlayer.
3. The energy absorbing bumper of a new energy automobile of claim 2, wherein: the two ends of the inner bumper (2) are curved surfaces, the inner side surface of the inner bumper (2) is provided with mounting holes (21), and the mounting holes (21) are in sealing connection with the energy absorption boxes (7).
4. The energy absorbing bumper of a new energy automobile of claim 1, wherein: the connecting rod (5) comprises a transverse connecting rod (51), an energy-absorbing box connecting end (52) and a sliding sheet (53), wherein the transverse connecting rod (51) is connected with the energy-absorbing box connecting end (52) in a welded mode, the sliding sheet (53) is connected between the transverse connecting rod (51) and the guide groove (451), an air bag (54) connected to the inner side face of the box body (41) is arranged on the outer end face of the end portion of the sliding sheet (53), and the air bag (54) is connected with the air outlet hole (441) through an air pipe.
5. The energy absorbing bumper of a new energy automobile of claim 4, wherein: the energy-absorbing box reinforcing device (6) comprises a cross connecting frame (61), a polygonal bracket (62) and a reinforcing column (63), wherein the cross connecting frame (61) is connected to the tail end of the energy-absorbing box connecting end (52), the end point of the cross connecting frame (61) is connected to the inner side surface of the polygonal bracket (62), and the reinforcing column (63) is arranged on the outer side surface of the polygonal bracket (62);
The inner side wall of the polygonal bracket (62) is provided with a plurality of stress notches (621).
6. The energy absorbing bumper of a new energy automobile of claim 5, wherein: the energy-absorbing box (7) comprises an energy-absorbing box shell (71) and a mounting plate (72), a crumple guide groove (73) is formed in the energy-absorbing box shell (71), crumple guide holes (74) are formed in the crumple guide groove (73), reinforcing columns (63) are connected in a sliding mode in the crumple guide holes (74), and the energy-absorbing box shell (71) is mounted on a longitudinal beam of a new energy automobile through the mounting plate (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210613210.2A CN114851999B (en) | 2022-05-31 | 2022-05-31 | New energy automobile energy-absorbing bumper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210613210.2A CN114851999B (en) | 2022-05-31 | 2022-05-31 | New energy automobile energy-absorbing bumper |
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| CN114851999A CN114851999A (en) | 2022-08-05 |
| CN114851999B true CN114851999B (en) | 2024-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210613210.2A Active CN114851999B (en) | 2022-05-31 | 2022-05-31 | New energy automobile energy-absorbing bumper |
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| Country | Link |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105329197A (en) * | 2015-11-02 | 2016-02-17 | 重庆至信实业有限公司 | Energy absorption box of automobile front anti-collision beam |
| CN208515540U (en) * | 2018-06-19 | 2019-02-19 | 四川航天职业技术学院 | A kind of multi-buffer energy-absorbing automotive bumper |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012166672A (en) * | 2011-02-14 | 2012-09-06 | Mazda Motor Corp | Die cast aluminum alloy-made crash can |
| CN213768472U (en) * | 2020-09-08 | 2021-07-23 | 上海凌云工业科技有限公司凌云汽车技术分公司 | Novel separable steel-plastic mixed anti-collision beam energy absorption box |
| CN214084141U (en) * | 2020-10-19 | 2021-08-31 | 常州恒河车辆部件有限公司 | Multi-layer buffer automobile front bumper framework |
-
2022
- 2022-05-31 CN CN202210613210.2A patent/CN114851999B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105329197A (en) * | 2015-11-02 | 2016-02-17 | 重庆至信实业有限公司 | Energy absorption box of automobile front anti-collision beam |
| CN208515540U (en) * | 2018-06-19 | 2019-02-19 | 四川航天职业技术学院 | A kind of multi-buffer energy-absorbing automotive bumper |
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| Publication number | Publication date |
|---|---|
| CN114851999A (en) | 2022-08-05 |
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