CN113147643B - Modular energy absorption structure - Google Patents
Modular energy absorption structure Download PDFInfo
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- CN113147643B CN113147643B CN202110499492.3A CN202110499492A CN113147643B CN 113147643 B CN113147643 B CN 113147643B CN 202110499492 A CN202110499492 A CN 202110499492A CN 113147643 B CN113147643 B CN 113147643B
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- box body
- box
- collision beam
- collision
- energy absorption
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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
- B60R19/34—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type
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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
- B60R19/18—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
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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
- B60R19/18—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
- B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention relates to a modular energy absorbing structure comprising: a connecting plate for fixing to a vehicle frame; the anti-collision beam is positioned on one side of the connecting plate; the energy absorption box is located between the connecting plate and the anti-collision beam, the energy absorption box is connected with the anti-collision beam and the connecting plate, and when the anti-collision beam collides, the energy absorption box can stretch and change. According to the modular energy absorption structure, the energy absorption box is arranged between the anti-collision beam and the connecting plate and is connected with the anti-collision beam and the connecting plate, when the anti-collision beam collides, the anti-collision beam and the energy absorption box deform to absorb part of collision energy, and meanwhile, the energy absorption box can stretch and change, so that the collision energy is further absorbed in the stretching and changing process of the energy absorption box, and therefore the modular energy absorption structure can absorb more energy after high-speed collision, and safety after collision is realized.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a modular energy absorption structure.
Background
At present, the collision safety performance is one of the main contents of the safety design of a vehicle body structure, the main purpose is to reduce the degree of injury of passengers caused by collision, the vehicle body structure is required to have certain energy absorption and deformation resistance, and an energy absorption box arranged between a vehicle anti-collision beam and a vehicle body is an important structure and part for absorbing energy during collision.
In the related art, an anti-collision structure is characterized in that an energy absorption box is arranged between an anti-collision beam and a connecting plate, the whole energy absorption box is a pipe body with a fixed size, and after a vehicle collides, the anti-collision beam and the energy absorption box both generate plastic deformation so as to absorb collision energy and reduce loss caused by collision.
Although this structure has the function of absorbing energy, the energy absorbed is limited because the energy absorption box is a fixed-size pipe body.
Therefore, there is a need for a new modular energy absorbing structure to overcome the above problems.
Disclosure of Invention
The embodiment of the invention provides a modular energy absorption structure, which aims to solve the problem that the energy absorbed by an energy absorption box in the related art is limited.
In a first aspect, a modular energy absorbing structure is provided, comprising: a connecting plate for fixing to a vehicle frame; the anti-collision beam is positioned on one side of the connecting plate; the energy absorption box is located between the connecting plate and the anti-collision beam and is connected with the anti-collision beam and the connecting plate, and when the anti-collision beam collides, the energy absorption box can be changed in a telescopic mode.
In some embodiments, the crash box comprises: the first box body is fixed with the anti-collision beam; and the second box body is connected with the first box body and the connecting plate, the inner cavity size of the second box body is larger than the outer contour size of the first box body, when the anti-collision beam collides, the cross section of the first box body is expanded, the first box body is pressed into the second box body, and the second box body extrudes the first box body.
In some embodiments, the first box and the second box are connected by a connecting member, and the connecting member is broken when the anti-collision beam collides.
In some embodiments, the first box body is provided with a first mounting hole, and the second box body is provided with a second mounting hole; the connector includes: the nut is fixedly arranged on one side of the second box body; and the bolt penetrates through the second mounting hole and the first mounting hole and is fixed with the nut.
In some embodiments, the first box body is provided with a plurality of first mounting holes at intervals along the length direction, and the length of the energy absorption box is adjusted by passing the bolt through different first mounting holes.
In some embodiments, the wall thickness of the first cassette is less than the wall thickness of the second cassette.
In some embodiments, the first box is provided with a plurality of first collapse holes penetrating through the wall thickness of the first box, and the second box is provided with a plurality of second collapse holes penetrating through the wall thickness of the second box; the distance between two adjacent first crumple holes is smaller than the distance between two adjacent second crumple holes.
In some embodiments, the first box is provided with a plurality of first collapse holes penetrating through the wall thickness of the first box, and the second box is provided with a plurality of second collapse holes penetrating through the wall thickness of the second box; the size of the first collapsing holes is larger than that of the second collapsing holes.
In some embodiments, the cross section of the first box body is square, and a plurality of first bending parts which are recessed inwards are arranged at the corners of the first box body; the cross section of the second box body is also square, and a plurality of second bending parts which are sunken inwards are arranged at the corners of the second box body; the distance between two adjacent first bending parts is smaller than the distance between two adjacent second bending parts.
In some embodiments, when the anti-collision beam collides, the deformation process of the energy absorption box sequentially comprises: collapsing, expanding, squeezing, collapsing.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides a modular energy absorption structure, wherein the energy absorption box is arranged between the anti-collision beam and the connecting plate and is connected with the anti-collision beam and the connecting plate, when the anti-collision beam collides, the anti-collision beam and the energy absorption box deform to absorb part of collision energy, and meanwhile, the energy absorption box can also stretch and change to further absorb the collision energy in the process of stretching and changing of the energy absorption box, so that the modular energy absorption structure can absorb more energy after high-speed collision and realize safety after collision.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an exploded perspective view of a modular energy absorbing structure according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a crash box of a modular energy absorber structure according to an embodiment of the present invention.
In the figure:
1. a connecting plate;
2. an anti-collision beam;
3. an energy absorption box; 31. a first case; 311. a first mounting hole; 312. a first collapsing hole; 32. a second box body; 321. a second mounting hole; 322. a second collapsing hole;
4. a nut;
5. and (4) bolts.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiment of the invention provides a modular energy absorption structure, which can solve the problem that the energy absorbed by an energy absorption box in the related art is limited.
Referring to fig. 1 and 2, a modular energy absorbing structure provided for an embodiment of the present invention may include: the energy-absorbing device comprises a connecting plate 1 for fixing to a vehicle frame, wherein the vehicle frame can comprise a left longitudinal beam and a right longitudinal beam, the number of the connecting plate 1 is two, the two connecting plates 1 are respectively fixed to the front ends of the left longitudinal beam and the right longitudinal beam, so that the modular energy-absorbing structure is arranged at the front part of the vehicle, and the front part of the vehicle is protected, in other embodiments, the connecting plate 1 can be fixedly arranged at the rear ends of the left longitudinal beam and the right longitudinal beam, so that the modular energy-absorbing structure is also arranged at the rear part of the vehicle, and the rear part of the vehicle is protected; the anti-collision beam 2 can be positioned on one side of the connecting plate 1, in this embodiment, the anti-collision beam 2 is positioned in front of the connecting plate 1 and is arranged at an interval with the connecting plate 1, the anti-collision beam 2 can be arranged into a suitable shape according to a specific vehicle type, in this embodiment, the anti-collision beam 2 is preferably arc-shaped, and the anti-collision beam 2 can be a hollow pipe body so as to absorb part of energy during collision; the energy absorption boxes 3 can be positioned between the connecting plate 1 and the anti-collision beam 2, and the energy absorption boxes 3 are connected with the anti-collision beam 2 and the connecting plate 1, in the embodiment, two energy absorption boxes 3 are also arranged corresponding to the connecting plate 1, the two energy absorption boxes 3 are symmetrically arranged on the left and right of the anti-collision beam 2, so that the universality of parts is further improved, when the anti-collision beam 2 is collided at a low speed, the collision strength is low, the energy to be absorbed is less, the anti-collision beam 2 can be crumpled and deformed, and meanwhile, the energy absorption boxes 3 are partially crumpled and deformed; when the anti-collision beam 2 is in medium-speed collision, the collision strength is relatively increased, the energy to be absorbed is also increased, and after the anti-collision beam 2 is deformed by collapsing, the energy absorption boxes 3 positioned at the rear part of the anti-collision beam 2 can be completely deformed by collapsing to continuously absorb the collision energy; when the anti-collision beam 2 is collided at a high speed, the collision strength is high, the energy to be absorbed is also high, after the anti-collision beam 2 is deformed by crumpling and contracting, the energy absorption box 3 positioned at the rear part of the anti-collision beam 2 is also deformed by crumpling and contracting, and the energy absorption box 3 can be further expanded and compressed to further absorb the collision energy in the process of telescopic change, so that the anti-collision beam can adapt to different collision strengths of low speed, medium speed, high speed and the like, and the collision safety is met.
Referring to fig. 1 and 2, in some alternative embodiments, the crash box 3 can include: the first box 31, that is, the first box 31 is hollow inside, and the first box 31 may be fixed to the anti-collision beam 2, in this embodiment, the first box 31 is welded to the anti-collision beam 2, and in other embodiments, the first box 31 and the anti-collision beam 2 may also be fixed by other fixing methods, such as fixing by screws; and a second box 32, the inside of the second box 32 is also hollow, and the second box 32 connects the first box 31 with the connecting plate 1, that is, the first box 31 and the second box 32 are arranged front and back, and the first box 31 is located in front of the second box 32, the inner cavity size of the second box 32 can be larger than the outer contour size of the first box 31, that is, the rear end of the first box 31 can just contact with the front end of the second box 32, or the rear end of the first box 31 can also be partially inserted into the second box 32, so that when the impact beam 2 collides, the first box 31 is firstly squeezed to expand the cross section of the first box 31 (equivalent to being stretched in front and back and up and down directions), then the first box 31 is further pressed into the second box 32, so that the cross section of the first box 31 is compressed again in left and right and up and down directions, so that the overall expansion of the crash box 3 is realized, in the process of expanding and compressing the energy absorption box, the thickness of the first box 31 is more linear expansion, and the second box 31 can absorb the energy, the energy absorption box 31 can be more easily, and the second box 31 can absorb the energy absorption of the energy, and the crash box 31 can be more easily, and the crash box can absorb the energy absorption box 31, and the crash box 31 can be more easily, and the crash box can be more easily changed in the thickness can be more easily, and the thickness of the second box can be more easily changed, and the crash box can be more easily changed in the size can be more easily.
Referring to fig. 1 and 2, further, the front end of the first box 31 is preferably curved to fit the impact beam 2 with the outer surface extending along the curve of the curve, so that the first box 31 is firmly connected with the impact beam 2.
Referring to fig. 1 and 2, in some alternative embodiments, the first box 31 and the second box 32 may be connected by a connector, and when the impact beam 2 collides, the connector is broken, that is, when no collision occurs or the collision speed is low, the first box 31 may be connected to the second box 32 by the connector to ensure that the first box 31 is stably connected to the second box 32, and when the impact beam 2 collides at a high speed, the connector may be broken by a shear force during the collision due to a high collision speed, so that the first box 31 and the second box 32 are unlocked, and the first box 31 may be pressed into the second box 32 backwards to achieve collapse and energy absorption.
Referring to fig. 1 and 2, in some alternative embodiments, the first box 31 may have a first mounting hole 311, and the second box 32 may have a second mounting hole 321, in this embodiment, the first mounting hole 311 penetrates the wall thickness of the first box 31 from left to right, and the second mounting hole 321 penetrates the wall thickness of the second box 32 from left to right; the connector may include: the nut 4 is fixedly arranged on one side of the second box body 32, in this embodiment, the nut 4 can be welded and fixed on the second box body 32, and the nut 4 corresponds to the second mounting hole 321; and a bolt 5, wherein the bolt 5 can pass through the second mounting hole 321 and the first mounting hole 311 to be fixed with the nut 4, that is, the first box 31 can be partially inserted into the second box 32, so that the first mounting hole 311 on the first box 31 corresponds to the second mounting hole 321 on the second box 32, and then the bolt 5 passes through the second mounting hole 321 on one side of the second box 32, the first mounting hole 311 on one side of the first box 31, the first mounting hole 311 on the other side of the first box 31, and the second mounting hole 321 on the other side of the second box 32 from the outside in sequence, and then is in threaded connection with the nut 4 fixed on the second box 32; owing to set up bolt 5 and nut 4, simple structure is convenient for with first box body 31 with second box body 32 is connected fixedly, and when taking place high-speed collision, bolt 5 also splits at the middle part easily, is convenient for reach first box body 31 is impressed second box body 32.
Further, in this embodiment, be equipped with three groups along the fore-and-aft direction on the first box body 31 first mounting hole 311, wherein, every group includes two just from top to bottom first mounting hole 311, be equipped with a set of just from top to bottom on the second box body 32 second mounting hole 321, first mounting hole 311 with the diameter of second mounting hole 321 is 12mm, each set up a set of M12's nut 4 on the second box body 32.
Referring to fig. 1 and 2, in some alternative embodiments, a plurality of first mounting holes 311 may be formed in the first case 31 at intervals along the length direction (i.e., the front-back direction), the length of the crash box 3 is adjusted by inserting the bolt 5 through different first mounting holes 311, that is, a row of first mounting holes 311 is formed along the front-back direction, the depth of inserting the first case 31 into the second case 32 is different, so that different first mounting holes 311 correspond to different second mounting holes 321, and the bolt 5 is fixed to the nut 4 through different first mounting holes 311, so that the overlapping area between the first case 31 and the second case 32 in the left-right direction is changed, and the total length of the first case 31 and the second case 32 is adjusted; the bolt 5 penetrates through the first mounting hole 311 which is closer to the rear end of the first box body 31, the length of the energy-absorbing box 3 is longer, the bolt 5 penetrates through the first mounting hole 311 which is closer to the front end of the first box body 31, the length of the energy-absorbing box 3 is shorter, and the length of the energy-absorbing box 3 is adjustable, so that the modularized energy-absorbing structure can realize different front overhang lengths, therefore, the modularized energy-absorbing structure can be suitable for vehicle models of different platforms, the modularized universality is realized on the premise of meeting the safety performance, and the cost is reduced.
Referring to fig. 1 and 2, in some alternative embodiments, the wall thickness of the first box 31 may be smaller than that of the second box 32, since the wall thickness of the first box 31 is thinner and is located at a position close to the energy-absorbing box 3, when the impact beam 2 collides, the first box 31 is more likely to be collapsed and deformed relative to the second box 32, and if the impact beam 2 and the first box 31 are deformed after the collision, the bolt 5 may be removed and only the first box 31 and the impact beam 2 may be replaced during maintenance, which does not require replacing the second box 32, thereby reducing the maintenance cost.
Referring to fig. 1 and 2, in some alternative embodiments, the first box 31 may have a plurality of first collapsing holes 312 penetrating through the wall thickness thereof, the second box 32 may have a plurality of second collapsing holes 322 penetrating through the wall thickness thereof, in particular, in this embodiment, the first box 31 and the second box 32 are preferably substantially rectangular parallelepiped, the first collapsing holes 312 are disposed on four edges of the first box 31, the second collapsing holes 322 are disposed on four edges of the second box 32, and the first collapsing holes 312 and the second collapsing holes 322 may be substantially human eye-shaped, the middle part is large, the two sides are small, the middle part is relatively located at the edge, the two smaller parts can respectively extend to the side faces at the two sides of the edge, the first crash shrinkage holes 312 are arranged on the first box body 31, and the second crash shrinkage holes 322 are arranged on the second box body 32, so that the first crash shrinkage holes 312 and the second crash shrinkage holes 322 can further generate crash deformation energy absorption in the collision process, and the first crash shrinkage holes 312 and the second crash shrinkage holes 322 are respectively and correspondingly arranged on the edges due to the fact that the rigidity of the edges is large, so that the energy absorption box 3 is more easily in crash deformation; in other embodiments, the first box 31 and the second box 32 may also be cylinders, the first collapsing holes 312 may be disposed on any side of the first box 31, and the second collapsing holes 322 may also be disposed on any side of the second box 32; meanwhile, on the same edge, the distance between the two adjacent first collapse holes 312 may be smaller than the distance between the two adjacent second collapse holes 322, that is, the first collapse holes 312 distributed on the first box 31 are more, the density of the first collapse holes 312 on the first box 31 is higher, the density of the second collapse holes 322 distributed on the second box 32 is relatively lower, the density of the second collapse holes 322 on the second box 32 is lower, so that after collision, the first box 31 is more easily deformed than the second box 32, and when the collision speed is not high, the second box 32 may not be deformed, and when maintenance is performed, the second box 32 does not need to be replaced.
Referring to fig. 1 and 2, in some alternative embodiments, the first crush boxes 312 may have a size larger than that of the second crush boxes 322, that is, the first crush boxes 312 on the first box 31 are larger, and the second crush boxes 322 on the second box 32 are relatively smaller, so that the first crush boxes 312 can absorb more energy after collision, and the first box 31 is more susceptible to crush deformation.
Referring to fig. 1 and 2, in this embodiment, the first box 31 is a rectangular parallelepiped, that is, the cross section of the first box 31 is square, and a plurality of first bending portions that are recessed inward are disposed at corners (that is, edges of the rectangular parallelepiped) of the first box 31, that is, the first bending portions are recessed from an outer surface of the first box 31 to a hollow interior thereof, and may also be disposed at intervals, in this embodiment, the first bending portions may be disposed on four edges of the first box 31; the second box 32 is also preferably a rectangular parallelepiped, that is, the cross section of the second box 32 is also a square, and a plurality of second bent portions which are recessed inward are provided at corners (that is, at edges of the rectangular parallelepiped) of the second box 32, that is, the second bent portions are formed by recessing from the outer surface of the second box 32 to the hollow interior thereof, and the plurality of second bent portions may also be provided at intervals, in this embodiment, the second bent portions may be provided at four edges of the second box 32; wherein, on same arris, adjacent two distance between the first portion of bending can be less than adjacent two distance between the second portion of bending, that is to say, distribute on the first box body 31 first portion of bending is more, first portion of bending is in density on the first box body 31 is great, distribute on the second box body 32 the second portion of bending is less relatively, the second portion of bending is in density on the second box body 32 is less for after the collision, first box body 31 is compared second box body 32 changes takes place to burst and contracts the deformation, when collision velocity is not big, the deformation of bursting probably can not take place for second box body 32, then when maintaining, need not change second box body 32.
Referring to fig. 1 and 2, in some alternative embodiments, when the impact beam 2 is impacted, the deformation process of the energy absorption box 3 sequentially comprises the following steps: collapsing, expanding, squeezing, collapsing; specifically, when the impact beam 2 is in a low-speed collision, the impact beam 2 and the first box 31 may be collapsed and deformed, and during maintenance, only the impact beam 2 and the first box 31 may be detached; when the anti-collision beam 2 is in medium-speed collision, the anti-collision beam 2 and the first box body 31 can be deformed by collapsing, then after the first box body 31 is deformed by collapsing, the second box body 32 can continue to deform by collapsing to absorb the energy required to be absorbed after collision, and during maintenance, the anti-collision beam 2, the first box body 31 and the second box body 32 can be detached to replace the anti-collision beam 2 and the energy absorption box 3; when the anti-collision beam 2 is collided at a high speed, the anti-collision beam 2 and the first box body 31 are collapsed and deformed, then after the first box body 31 is collapsed and deformed, the second box body 32 is also continuously collapsed and deformed, further, the front and back direction of the first box body 31 is further squeezed to generate collapse and deformation, the cross section of the first box body 31 is expanded, then the bolt 5 is sheared and broken, the first box body 31 is pressed into the second box body 32, in the process that the first box body 31 is pressed into the second box body 32, the front and back direction of the first box body 31 is expanded, the cross section of the first box body 31 is compressed, after the first box body 31 enters the second box body 32, the first box body 31 is overlapped with the second box body 32 to be collapsed and deformed together, the cross sections of the first box body 31 and the second box body 32 are both squeezed and expanded in the front and back direction, and the energy absorption box 3 has variable performance in the whole process, the energy after the high-speed collision can be absorbed, and more safety after the collision can be realized; through setting different cross-sectional area sizes of the first box body 31 and the second box body 32 and selecting the bolts 5, different absorbed energy can be realized under different collision strengths; meanwhile, under different working conditions such as low-speed, medium-speed and high-speed collision, the energy absorption box 3 can meet different energy absorption requirements, and the energy absorption box has the advantages of strong universality and good feasibility, is favorable for realizing a modular platform framework, and is favorable for reducing the after-sale maintenance cost.
The principle of the modular energy absorption structure provided by the embodiment of the invention is as follows:
because the anti-collision beam 2 with set up between the connecting plate 1 the energy-absorbing box 3, just the energy-absorbing box 3 is connected anti-collision beam 2 with connecting plate 1, when anti-collision beam 2 takes place high-speed collision, and collision strength is great, and the energy that needs to be absorbed is also bigger the anti-collision beam 2 takes place to crumple and warp after the deformation, and the energy-absorbing box 3 that is located anti-collision beam 2 rear portion also takes place to crumple and warp to, energy-absorbing box 3 can further expand, compress the change, makes energy-absorbing box 3 is carrying out the in-process of flexible change and is further absorbing the collision energy, consequently, more energy after the high-speed collision can be absorbed to modularization energy-absorbing structure, satisfies the security of collision.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A modular energy absorbing structure, comprising:
a connecting plate (1) for fixing to a vehicle frame;
the anti-collision beam (2) is positioned on one side of the connecting plate (1);
the energy absorption box (3) is positioned between the connecting plate (1) and the anti-collision beam (2), the energy absorption box (3) is connected with the anti-collision beam (2) and the connecting plate (1), and when the anti-collision beam (2) collides, the energy absorption box (3) can change in a telescopic mode;
the crash box (3) comprises:
the first box body (31) is fixed with the anti-collision beam (2);
the second box body (32) is connected with the first box body (31) and the connecting plate (1), the size of an inner cavity of the second box body (32) is larger than the size of an outer contour of the first box body (31), the wall thickness of the first box body (31) is smaller than that of the second box body (32), and the first box body (31) is connected with the second box body (32) through a connecting piece;
when the anti-collision beam (2) collides at a low speed, the anti-collision beam (2) and the first box body (31) collapse and deform;
when the anti-collision beam (2) collides at a medium speed, the anti-collision beam (2) and the first box body (31) are deformed in a collapsing manner, and after the first box body (31) is deformed in a collapsing manner, the second box body (32) is also deformed in a collapsing manner continuously;
when the anti-collision beam (2) collides at a high speed, the deformation process sequentially comprises the following steps: the anti-collision beam (2) and the first box body (31) are collapsed and deformed, the second box body (32) continues to be collapsed and deformed, the cross section of the first box body (31) is expanded, the connecting piece is sheared and broken, the cross section of the first box body (31) is compressed, and the first box body (31) and the second box body (32) are overlapped to be collapsed and deformed.
2. Modular energy absorbing structure according to claim 1, characterized in that the first box (31) is provided with a first mounting hole (311) and the second box (32) is provided with a second mounting hole (321);
the connector includes: the nut (4) is fixedly arranged on one side of the second box body (32);
and the bolt (5), the bolt (5) passes through the second mounting hole (321) and the first mounting hole (311) and is fixed with the nut (4).
3. The modular energy absorbing structure of claim 2, wherein:
the first box body (31) is provided with a plurality of first mounting holes (311) at intervals along the length direction, and the length of the energy absorption box (3) is adjusted by penetrating bolts (5) through different first mounting holes (311).
4. The modular energy absorbing structure of claim 1, wherein:
the first box body (31) is provided with a plurality of first collapse holes (312) penetrating through the wall thickness of the first box body, and the second box body (32) is provided with a plurality of second collapse holes (322) penetrating through the wall thickness of the second box body;
the distance between two adjacent first collapse holes (312) is smaller than the distance between two adjacent second collapse holes (322).
5. The modular energy absorbing structure of claim 1, wherein:
the first box body (31) is provided with a plurality of first collapse holes (312) penetrating through the wall thickness of the first box body, and the second box body (32) is provided with a plurality of second collapse holes (322) penetrating through the wall thickness of the second box body;
the first collapse holes (312) have a size greater than the second collapse holes (322).
6. The modular energy absorbing structure of claim 1, wherein:
the cross section of the first box body (31) is square, and a plurality of inwards-concave first bending parts are arranged at the corners of the first box body (31);
the cross section of the second box body (32) is also square, and a plurality of second bending parts which are sunken inwards are arranged at the corners of the second box body (32);
the distance between two adjacent first bending parts is smaller than the distance between two adjacent second bending parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN209719505U (en) * | 2019-01-03 | 2019-12-03 | 重庆菲斯塔新能源汽车科技有限公司 | A kind of anti-collision beam energy absorbing box |
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| DE102008032543A1 (en) * | 2008-07-10 | 2009-04-02 | Daimler Ag | Crashbox for use in motor vehicle, has fastener provided at body structure component, where fastener comprises block forming element and clamping forces loaded using element, and block forming element designed in form of casing |
| CN204249970U (en) * | 2014-10-28 | 2015-04-08 | 浙江吉利控股集团有限公司 | A kind of multistage energy-absorption type front anticollision beam of automobile |
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| CN113147643A (en) | 2021-07-23 |
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