CN111976637A - Automobile energy absorption piece, energy absorption box and manufacturing method thereof - Google Patents
Automobile energy absorption piece, energy absorption box and manufacturing method thereof Download PDFInfo
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- CN111976637A CN111976637A CN201910427072.7A CN201910427072A CN111976637A CN 111976637 A CN111976637 A CN 111976637A CN 201910427072 A CN201910427072 A CN 201910427072A CN 111976637 A CN111976637 A CN 111976637A
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- energy absorption
- box body
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 78
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 268
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 263
- 239000004917 carbon fiber Substances 0.000 claims abstract description 263
- 239000010410 layer Substances 0.000 claims abstract description 166
- 239000002356 single layer Substances 0.000 claims abstract description 88
- 239000004744 fabric Substances 0.000 claims abstract description 56
- 239000000835 fiber Substances 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 13
- 239000006096 absorbing agent Substances 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/20—All layers being fibrous or filamentary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/08—Cars
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Vibration Dampers (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention provides an automobile energy absorption piece, an energy absorption box and a manufacturing method thereof, wherein the automobile energy absorption piece comprises a carbon fiber structural member and two additional plates, wherein the carbon fiber structural member comprises a first carbon fiber layer, a second carbon fiber layer and a third carbon fiber layer, the first carbon fiber layer, the second carbon fiber layer and the third carbon fiber layer respectively comprise at least one single-layer carbon fiber cloth, the second carbon fiber layer is positioned between the first carbon fiber layer and the third carbon fiber layer, and the left side and the right side of the second carbon fiber layer respectively form an embedding space with the first carbon fiber layer and the third carbon fiber layer; the two additional plates are respectively embedded into the embedding space and fixed with the carbon fiber structural member. The invention solves the problems of insufficient design of the performance of the existing vehicle type of the same platform part and insufficient buffering and energy absorption capacity caused by improper rigidity of the energy absorption box.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an automobile energy absorption piece, an energy absorption box and a manufacturing method thereof.
Background
The automobile energy absorption box is an energy absorption structure connected between an automobile anti-collision beam and a longitudinal beam, and when an automobile collides, the energy absorption box absorbs the collision energy to a certain extent through self crushing deformation and then transmits the rest collision energy to the automobile body. In the collision process, if the rigidity of the energy absorption box is insufficient, enough impact force is difficult to absorb, so that the energy absorption function is realized; if the rigidity of the energy absorption box is too high, the crushing reaction force is large, effective collapse is difficult to occur, and the passenger protection of the passenger compartment can be influenced.
Along with the development of vehicle body platformization, because the difference of the whole performance of different motorcycle types leads to the not enough design of the vehicle type performance of the same platform part, the not suitable problem that leads to the buffering energy-absorbing ability of energy-absorbing box rigidity not enough certainly.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an automobile energy absorption piece, an energy absorption box and a manufacturing method thereof, which can be used for enhancing the insufficient performance of an automobile body caused by platform of the automobile body, adjusting the condition that the rigidity of the energy absorption box is not proper and effectively improving the buffering energy absorption capacity.
The invention provides an automobile energy absorption piece, which comprises a carbon fiber structural part and two additional plates, wherein the carbon fiber structural part comprises:
the carbon fiber structural member comprises a first carbon fiber layer, a second carbon fiber layer and a third carbon fiber layer, wherein the first carbon fiber layer, the second carbon fiber layer and the third carbon fiber layer respectively comprise at least one single-layer carbon fiber cloth, the second carbon fiber layer is positioned between the first carbon fiber layer and the third carbon fiber layer, and an embedding space is formed between the second carbon fiber layer and the third carbon fiber layer on the left side and the right side respectively;
the two additional plates are respectively embedded into the embedding space and fixed with the carbon fiber structural member.
Further, the single-layer carbon fiber cloth in the first carbon fiber layer and the single-layer carbon fiber cloth in the third carbon fiber layer are symmetrically arranged in the fiber direction;
the plurality of single-layer carbon fiber cloths of the second carbon fiber layer are symmetrically arranged in the fiber direction.
Further, the first carbon fiber layer and the third carbon fiber layer both comprise two stacked single-layer carbon fiber cloths, the second carbon fiber layer comprises five stacked single-layer carbon fiber cloths, and the fiber direction of each single-layer carbon fiber cloth is 0 °, 90 °, 0 °, 45 °, 0 °, -45 °, 0 °, 90 °, and 0 ° from bottom to top.
Further, the thickness of the additional plate is the same as the thickness of the second carbon fiber layer.
Furthermore, two additional plates respectively extend out of the left end and the right end of the carbon fiber structural member, and at least one first bolt hole is formed in the position where the additional plates are not covered by the first carbon fiber layer and the second carbon fiber layer.
The invention provides an automobile energy absorption box, which comprises an energy absorption box body and a plurality of automobile energy absorption pieces, wherein:
the energy absorption box body is a square closed cavity, a plurality of pairs of matching holes are symmetrically formed in two opposite side faces of the energy absorption box body, and one automobile energy absorption piece is fixedly installed between each pair of matching holes.
Furthermore, one end, far away from the second carbon fiber layer, of the additional plate extends out of the matching hole, the carbon fiber structural member is located inside the energy absorption box body, and the additional plate, the first carbon fiber layer and the third carbon fiber layer are fixedly bonded with the inner wall of the energy absorption box body.
Furthermore, each cooperation hole side sets up a mounting panel, the mounting panel with the cooperation hole place the side of energy-absorbing box body is mutually perpendicular, each the mounting panel all is provided with at least one second bolt hole, the second bolt hole with set up on the additional plate first bolt hole aligns, makes through the bolt the energy-absorbing box body with car energy-absorbing spare is fixed mutually.
The invention provides a method for manufacturing an automobile energy absorption box, which comprises the following steps:
s81, laying single-layer carbon fiber cloth to form a first carbon fiber layer and a second carbon fiber layer, wherein the second carbon fiber layer is positioned in the middle of the upper part of the first carbon fiber layer;
s82, respectively installing and fixing additional plates on two sides of the second carbon fiber layer;
s83, laying at least one single-layer carbon fiber cloth above the second carbon fiber layer and the two additional plates to form a third carbon fiber layer;
S84, placing the first carbon fiber layer, the second carbon fiber layer, the third carbon fiber layer and the two additional plates which are arranged in epoxy resin, and manufacturing an automobile energy absorption part by using a prepreg processing technology;
s85, providing an energy absorption box body, and forming a plurality of pairs of matching holes and a mounting plate on the side of each matching hole on the energy absorption box body by using a punching process and a flanging process;
s86, mounting the automobile energy absorption piece between a pair of matching holes opposite to the energy absorption box body, wherein one ends of the two additional plates extend out of the matching holes;
and S87, fixing the additional plate and the mounting plate through bolts, and bonding and fixing the automobile energy absorption piece and the inner wall of the energy absorption box body.
Further, the single-layer carbon fiber cloth in the first carbon fiber layer and the single-layer carbon fiber cloth in the third carbon fiber layer are symmetrically arranged in the fiber direction;
the fiber directions of a plurality of single-layer carbon fiber cloths of the second carbon fiber layer are symmetrically arranged, and the fiber direction of each single-layer carbon fiber cloth in the second carbon fiber layer is sequentially 0 degree, 45 degree, 0 degree, 45 degree and 0 degree from bottom to top.
The implementation of the invention has the following beneficial effects:
According to the invention, through the arrangement of the thickness of the single-layer carbon fiber cloth layer and the change of the size, the automobile energy absorption part can meet the requirements of most automobile types, the automobile body performance is insufficient due to the platform of a reinforced automobile body, the over-design of part of automobile types is avoided, and the cost is saved; meanwhile, when an automobile is collided, due to the existence of the matching holes, the aluminum alloy structure can be crushed at the position, the automobile energy absorption piece can be broken and broken thoroughly, and energy is absorbed through various modes such as breaking of carbon fibers, separation of a spread layer, stripping of epoxy resin and the like, so that impact energy is absorbed more stably, the purpose of protecting a passenger compartment is achieved, and the problem that the buffering energy absorption capacity is insufficient due to the fact that the existing energy absorption box is not proper in rigidity is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of an automotive energy absorber according to an embodiment of the present invention.
FIG. 2 is a front view of a single-layer carbon fiber cloth layer of an automotive energy absorber provided by an embodiment of the invention.
FIG. 3 is an isometric view of a crash box body provided by an embodiment of the invention.
FIG. 4 is an elevation view of a crash box body provided by an embodiment of the present invention.
FIG. 5 is a top view of a crash box body provided in accordance with an embodiment of the invention.
FIG. 6 is an isometric view of an automotive crash box provided in accordance with an embodiment of the present invention.
FIG. 7 is a top view of an automotive crash box provided in accordance with an embodiment of the present invention.
FIG. 8 is a flow chart of a method for manufacturing an automotive crash box according to an embodiment of the present invention.
Detailed Description
This patent core content is for setting up the carbon cloth of multilayer symmetry and forming car energy-absorbing spare, form car energy-absorbing box with car energy-absorbing spare setting in the energy-absorbing box body, energy-absorbing box body atress conquassation when external force is strikeed, car energy-absorbing spare passes through the fracture of carbon fiber, the analysis of spreading the layer, epoxy peels off the energy-absorbing, adjust car energy-absorbing box rigidity to suitable degree, do further explanation to this embodiment mode with the attached drawing and embodiment below.
The following will describe in detail embodiments of the energy absorbing member, the energy absorbing box and the automobile provided by the invention.
As shown in fig. 1, an embodiment of the present invention provides an automobile energy absorbing member 1, where the automobile energy absorbing member 1 includes a carbon fiber structural member 10 and two additional plates, where:
the carbon fiber structure member 10 comprises a first carbon fiber layer 11, a second carbon fiber layer 12 and a third carbon fiber layer 15, wherein the first carbon fiber layer 11, the second carbon fiber layer 12 and the third carbon fiber layer 15 respectively comprise at least one single-layer carbon fiber cloth;
the second carbon fiber layer 12 is located between the first carbon fiber layer 11 and the third carbon fiber layer 15, and as can be seen from fig. 2, the second carbon fiber layer 12 forms an embedding space 100 with the first carbon fiber layer 11 and the third carbon fiber layer 15 on the left and right sides respectively; two additional plates are inserted into the insertion spaces 100, respectively, and are fixed to the carbon fiber structural member 10.
It should be noted that the two additional plates are arranged in the embodiment to be matched and fixed with the automobile crash box and the mounting plate arranged on the automobile crash box, and certainly, a plurality of additional plates can be arranged according to the actual shape and the mounting requirement of the automobile crash box, and the additional plates can be made of aluminum materials, are light and are easy to deform under stress; the thickness of the additional plate is the same as the thickness of the second carbon fibre layer 12, and the additional plate is most easily mounted on the carbon fibre structural member 10.
It should be further noted that, in the present embodiment, an additional plate 13 and an additional plate 14 are provided, the additional plate 13 and the additional plate 14 are symmetrically located at the left and right ends of the second carbon fiber layer 12, the additional plate 13 extends out of the left end of the carbon fiber structural member 10, a first bolt hole 16 and a first bolt hole 17 are provided at the positions where the additional plate is not covered by the first carbon fiber layer 11 and the third carbon fiber layer 15, the additional plate 14 extends out of the right end of the carbon fiber structural member 10, a first bolt hole 18 and a first bolt hole 19 are provided at the positions where the additional plate is not covered by the first carbon fiber layer 11 and the third carbon fiber layer 15, and the number of the first bolt holes is set according to fixing requirements.
As shown in fig. 2, the embodiment of the present invention provides a layer formed by all single-layer carbon fiber cloths of an automobile energy absorption member 1, wherein a carbon fiber structural member 10 includes a first carbon fiber layer 11, a second carbon fiber layer 12 and a third carbon fiber layer 15, and the fiber directions of the single-layer carbon fiber cloths are, from bottom to top, 0 °, 90 °, 0 °, 45 °, 0 °, -45 °, 0 °, 90 °, and 0 °;
the first carbon fiber layer 11 comprises two stacked single-layer carbon fiber cloths, the fiber directions of the single-layer carbon fiber cloths from bottom to top are respectively 0 degree and 90 degrees, 0 degree is the horizontal direction, and 90 degrees is the direction perpendicular to 0 degree; the third carbon fiber layer 15 includes two stacked single-layer carbon fiber cloths, and the fiber directions of the single-layer carbon fiber cloths from bottom to top are 90 degrees and 0 degree respectively; the single-layer carbon fiber cloth of the first carbon fiber layer 11 and the single-layer carbon fiber cloth of the third carbon fiber layer 15 are symmetrically arranged in the fiber direction, that is, the sequence of the single-layer carbon fiber cloth from top to bottom in the first carbon fiber layer 11 is a first sequence, the sequence of the single-layer carbon fiber cloth from bottom to top in the third carbon fiber layer 15 is a second sequence, and when the first sequence and the second sequence are symmetrical, the fiber directions of the single-layer carbon fiber cloth of the first carbon fiber layer 11 and the single-layer carbon fiber cloth of the third carbon fiber layer 15 are symmetrical. The fiber directions of the single-layer carbon fiber cloth of the first carbon fiber layer 11 and the single-layer carbon fiber cloth of the third carbon fiber layer 15 in the first position are both 0 degree, the fiber directions of the single-layer carbon fiber cloth of the second position are both 90 degrees, and according to whether the symmetric fiber direction of 0 degree is 0 degree or 90 degrees, the fiber directions of the single-layer carbon fiber cloth of the first carbon fiber layer 11 and the single-layer carbon fiber cloth of the third carbon fiber layer 15 in the embodiment are presumed to be symmetrically arranged; assuming that the fiber directions of the single-layer carbon fiber cloth in the first carbon fiber layer 11 from top to bottom are respectively 15 degrees and 75 degrees, and the fiber directions of the single-layer carbon fiber cloth in the third carbon fiber layer 15 from top to bottom are respectively-75 degrees and-15 degrees, the fiber directions of the single-layer carbon fiber cloth in the first carbon fiber layer 11 and the single-layer carbon fiber cloth in the third carbon fiber layer 15 are symmetrical according to the 15 degrees and-15 degrees and the 75 degrees and-75 degrees.
In the present embodiment, the second carbon fiber layer 12 includes five stacked single-layer carbon fiber cloths, and the fiber directions thereof are 0 degree, 45 degree, 0 degree, -45 degree and 0 degree from bottom to top, respectively; when the second carbon fiber layer 12 includes odd number of single-layer carbon fiber cloths, the fiber direction of the middle single-layer carbon fiber cloth must be 0 degree or 90 degrees, and the numbers of the single-layer carbon fiber cloths from top to bottom and from bottom to top in the second carbon fiber layer 12 are the same, that is, the fiber directions of the plurality of single-layer carbon fiber cloths of the second carbon fiber layer 12 are symmetrically arranged, in this embodiment, the fiber directions of the plurality of single-layer carbon fiber cloths of the second carbon fiber layer 12 are symmetrically arranged; when the second carbon fiber layer 15 includes an even number of single-layer carbon fiber cloths, the number of the single-layer carbon fiber cloths in the second carbon fiber layer 12 is from top to bottom and from bottom to top, the fiber directions of the single-layer carbon fiber cloths located in the same position are symmetrical, that is, the fiber directions of the plurality of single-layer carbon fiber cloths of the second carbon fiber layer 12 are symmetrically arranged, for example, the fiber directions of the plurality of single-layer carbon fiber cloths of the second carbon fiber layer 12 are respectively 30 degrees, 60 degrees, -30 degrees, and the fiber directions of the four single-layer carbon fiber cloths of the second carbon fiber layer 12 are symmetrically arranged.
The single-layer carbon fiber cloth of the first carbon fiber layer 11 and the single-layer carbon fiber cloth of the third carbon fiber layer 15 are arranged symmetrically in the fiber direction, and the single-layer carbon fiber cloths of the second carbon fiber layer 12 are arranged symmetrically in the fiber direction, so that the automotive energy absorber 1 is protected and is not easily broken.
It should be further noted that the adjacent single-layer carbon fiber cloths are bonded and fixed, where the adjacent single-layer carbon fiber cloths include adjacent single-layer carbon fiber cloths in the same carbon fiber layer, and also include adjacent single-layer carbon fiber cloths in different carbon fiber layers;
the single-layer carbon fiber cloth contacted with the additional plate is fixedly bonded with the additional plate through a contact surface, wherein the contact surface comprises a contact part of the single-layer carbon fiber cloth positioned above and below the additional plate and the additional plate, and further comprises a contact part of the single-layer carbon fiber cloth positioned on the side surface of the additional plate and the additional plate.
The single-layer carbon fiber cloth is bonded and fixed between the adjacent single-layer carbon fiber cloth and is in contact with the additional plate, the single-layer carbon fiber cloth and the additional plate are bonded and fixed through the contact surface, the position relation of the first carbon fiber layer 11, the second carbon fiber layer 12, the third carbon fiber layer 15 and the additional plate is set, the single-layer carbon fiber cloth and the additional plate is placed in epoxy resin, and the automobile energy absorption piece 1 is formed through a prepreg processing technology.
It should be further noted that the fiber directions of any two adjacent single-layer carbon fiber cloths are different, so that the single-layer carbon fiber cloths are higher in toughness and more resistant to pressure and tension after being adhered together.
In conclusion, the automobile energy absorption piece 1 meets the requirements of most automobile types through the change of the thickness and the size of the single-layer carbon fiber cloth laying layer, the performance of the automobile body caused by platform strengthening of the automobile body is insufficient, the over-design of part of automobile types is avoided, and the cost is saved. The automobile energy absorbing part 1 can be also arranged on an automobile energy absorbing part provided with an installation position of the automobile energy absorbing part 1 to play an energy absorbing effect, such as: automobile longitudinal beams, front and rear bumpers, B-pillar areas and the like.
As shown in fig. 3, an energy-absorbing box body 21 is provided in an embodiment of the present invention, the energy-absorbing box body 21 is a square closed cavity, a preparation material is an aluminum alloy material, two opposite side surfaces of the energy-absorbing box body 21 are provided with a matching hole 22, a matching hole 23, a matching hole 24 and a matching hole 25, the matching hole 22 and the matching hole 24 are symmetrically provided to form a pair of matching holes, the matching hole 23 and the matching hole 25 are symmetrically provided to form a pair of matching holes, each pair of matching holes is used for installing and fixing one automobile energy-absorbing component 1, and each automobile energy-absorbing component 1 and the energy-absorbing box body 21 are fixed to each other.
With reference to fig. 4 and 5, a mounting plate 221 is provided on the fitting hole 22 side, and the mounting plate 221 is provided with a second bolt hole 222 and a second bolt hole 223; an installation plate 231 is arranged on the side of the matching hole 23, and a second bolt hole 232 and a second bolt hole 233 are arranged on the installation plate 231; a mounting plate 241 is provided on the side of the fitting hole 24, and a second bolt hole 242 and a second bolt hole 243 are provided in the mounting plate 241; the fitting hole 25 side is provided with a mounting plate 251, and the mounting plate 251 is provided with a second bolt hole 252 and a second bolt hole 253, each of which is provided with a second bolt hole.
Taking the matching hole 22 as an example, a mounting plate 221 is arranged on the side of the matching hole 22, the mounting plate 221 is perpendicular to the side face of the energy-absorbing box body 21 where the matching hole 22 is located, and is parallel to the cross section of the matching hole 22, and all the matching holes have the characteristics no matter the matching holes are transversely arranged or vertically arranged.
As shown in fig. 6, an embodiment of the present invention provides an automobile crash box 2, where the automobile crash box 2 includes a crash box body 21 and two automobile crash elements 1, two pairs of mating holes are symmetrically formed in two opposite side surfaces of the crash box body 21, and one automobile crash element 1 is mounted and fixed in each pair of the mating holes; the automobile energy absorbing piece 1 is fixed with the energy absorbing piece body 21.
Referring to fig. 6 and fig. 7, the end of the additional plates 13 and 14 away from the second carbon fiber layer 12 extends out of the matching hole, and the carbon fiber structural member 10 is located inside the crash box body 21.
The additional plate 13 is provided with a first bolt hole 16 and a first bolt hole 17, and the additional plate 14 is provided with a first bolt hole 18 and a first bolt hole 19; with reference to fig. 5 and 7, the mounting plate 221 is provided with a second bolt hole 222 and a second bolt hole 223, and the mounting plate 241 is provided with a second bolt hole 242 and a second bolt hole 243; when the automobile energy absorption piece 1 is arranged in the energy absorption box body 21, the first bolt hole 16 and the first bolt hole 17 are respectively aligned with the second bolt hole 222 and the second bolt hole 223, the first bolt hole 18 and the first bolt hole 19 are respectively aligned with the second bolt hole 242 and the second bolt hole 243, and the energy absorption box body 21 is fixed with the automobile energy absorption piece 1 through the corresponding bolts in the first bolt hole and the second bolt hole; for example, the first bolt hole 18 corresponds to the second bolt hole 222, and the first bolt hole 19 corresponds to the second bolt hole 223.
In order to further strengthen the relation between the energy absorption box body 21 and the automobile energy absorption piece 1, the additional plate 13, the additional plate 14, the first carbon fiber layer 11 and the third carbon fiber layer 15 are all fixedly bonded with the inner wall of the energy absorption box body 21.
The automobile protected by the invention comprises the automobile energy absorption box 2, wherein the automobile energy absorption box 2 is installed on an automobile energy absorption part, and the energy absorption part comprises an automobile longitudinal beam, a front bumper, a rear bumper, a B column and the like.
As shown in fig. 8, an embodiment of the present invention provides a method for manufacturing an automobile crash box 2, the method including:
s81, laying at least one single-layer carbon fiber cloth to form a first carbon fiber layer 11 and a second carbon fiber layer 12 respectively, wherein the second carbon fiber layer 12 is located in the middle of the upper portion of the first carbon fiber layer 11;
s82, respectively installing and fixing additional plates on two sides of the second carbon fiber layer 12;
s83, laying at least one single-layer carbon fiber cloth above the second carbon fiber layer 12 and the two additional plates to form a third carbon fiber layer 15;
s84, placing the first carbon fiber layer 11, the second carbon fiber layer 12, the third carbon fiber layer 15 and the two additional plates which are arranged in epoxy resin, and manufacturing the automobile energy absorption part 1 by using a prepreg processing technology;
s85, providing an energy absorption box body 21, and forming a plurality of pairs of matching holes and a mounting plate on the side of each matching hole on the energy absorption box body 21 by using a punching process and a flanging process;
S86, placing the automobile energy absorption piece 1 between a pair of opposite matching holes of the energy absorption box body 21, wherein one ends of two additional plates extend out of the matching holes;
and S87, fixing the additional plate and the mounting plate through bolts, and bonding the inner walls of the automobile energy absorption piece 1 and the energy absorption box body 21.
It should be noted that, the steps S81 to S84 need to be performed in sequence, and the step S85 may be performed after the steps S81 to S84, or may be performed in synchronization with the steps S81 to S84; the single layer of carbon fiber cloth is laid at an angle and direction in steps S81 and S83 so that the desired effect is achieved.
Further, the single-layer carbon fiber cloth in the first carbon fiber layer 11 and the single-layer carbon fiber cloth in the third carbon fiber layer 15 are arranged symmetrically in the fiber direction;
the plurality of single-layer carbon fiber cloths of the second carbon fiber layer 12 are arranged symmetrically in the fiber direction.
Furthermore, the fiber direction of each single-layer carbon fiber cloth is 0 degree, 90 degrees, 0 degree, 45 degrees, 0 degree, 90 degrees and 0 degree from bottom to top in sequence.
The implementation of the invention has the following beneficial effects:
according to the invention, the automobile energy absorption part 1 is enabled to meet the requirements of most automobile types through the arrangement of the thickness of the single-layer carbon fiber cloth layer and the change of the size, the automobile body performance is insufficient due to the platform of the reinforced automobile body, the over-design of part of automobile types is avoided, and the cost is saved; meanwhile, when an automobile is collided, due to the existence of the matching holes, the aluminum alloy structure can be crushed at the position, the automobile energy absorption piece can be broken and broken thoroughly, and energy is absorbed through various modes such as breaking of carbon fibers, separation of a spread layer, stripping of epoxy resin and the like, so that impact energy is absorbed more stably, the purpose of protecting a passenger compartment is achieved, and the problem that the buffering energy absorption capacity is insufficient due to the fact that the existing energy absorption box is not proper in rigidity is solved.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. The utility model provides an automobile energy absorbing piece (1), characterized in that automobile energy absorbing piece (1) includes carbon fiber structure spare (10) and two additional boards, wherein:
the carbon fiber structural member (10) comprises a first carbon fiber layer (11), a second carbon fiber layer (12) and a third carbon fiber layer (15), wherein the first carbon fiber layer (11), the second carbon fiber layer (12) and the third carbon fiber layer (15) respectively comprise at least one single-layer carbon fiber cloth, the second carbon fiber layer (12) is positioned between the first carbon fiber layer (11) and the third carbon fiber layer (15), and an embedding space (100) is formed between the left side and the right side of the second carbon fiber layer and the first carbon fiber layer (11) and the third carbon fiber layer (15) respectively;
the two additional plates are respectively embedded into the embedding space (100) and fixed with the carbon fiber structural member (10).
2. The automotive energy absorber according to claim 1, characterized in that the single-layer carbon fiber cloth of the first carbon fiber layer (11) is arranged symmetrically to the fiber direction of the single-layer carbon fiber cloth of the third carbon fiber layer (15);
the plurality of single-layer carbon fiber cloths of the second carbon fiber layer (12) are symmetrically arranged in the fiber direction.
3. The automotive energy absorber according to claim 2, characterized in that the first carbon fiber layer (11) and the third carbon fiber layer (15) each comprise two laminated single-layer carbon fiber cloths, and the second carbon fiber layer (12) comprises five laminated single-layer carbon fiber cloths, and the fiber direction of each single-layer carbon fiber cloth is 0 °, 90 °, 0 °, 45 °, 0 °, -45 °, 0 °, 90 °, 0 ° in this order from bottom to top.
4. Energy absorber according to claim 1, wherein the thickness of the additional sheet is the same as the thickness of the second carbon fiber layer (12).
5. The automotive energy absorber of claim 1, wherein two of said additional plates extend beyond the left and right ends of the carbon fiber structure (10), respectively, and wherein at least one first bolt hole is provided in the carbon fiber structure where it is not covered by the first carbon fiber layer (11) and the third carbon fiber layer (15).
6. An automotive crash box (2), characterized in that the automotive crash box (2) comprises a crash box body (21) and a plurality of automotive crash elements (1) according to any one of claims 1 to 5, wherein:
the energy absorption box is characterized in that the energy absorption box body (21) is a square closed cavity, a plurality of pairs of matching holes are symmetrically formed in two opposite side surfaces of the energy absorption box body (21), and one automobile energy absorption piece (1) is fixedly installed between each pair of matching holes.
7. The vehicle crash box according to claim 6, characterized in that the end of the additional plate, which is far away from the second carbon fiber layer (12), extends out of the matching hole, the carbon fiber structure member (10) is located inside the crash box body (21), and the additional plate, the first carbon fiber layer (11) and the third carbon fiber layer (15) are all fixed to the inner wall of the crash box body (21) in an adhesion manner.
8. The vehicle crash box according to claim 7, wherein a mounting plate is provided on each of said fitting holes, said mounting plate being perpendicular to a side surface of said crash box body (21) where said fitting holes are located, each of said mounting plates being provided with at least one second bolt hole aligned with said first bolt hole provided on said additional plate, said crash box body (21) being fastened to said vehicle crash member (1) by means of bolts.
9. A method of manufacturing an automotive crash box, the method comprising:
s81, laying at least one single-layer carbon fiber cloth to form a first carbon fiber layer (11) and a second carbon fiber layer (12) respectively, wherein the second carbon fiber layer (12) is located in the middle of the upper portion of the first carbon fiber layer (11);
s82, respectively installing and fixing additional plates on two sides of the second carbon fiber layer (12);
s83, laying at least one single-layer carbon fiber cloth above the second carbon fiber layer (12) and the two additional plates to form a third carbon fiber layer (15);
s84, placing the first carbon fiber layer (11), the second carbon fiber layer (12), the third carbon fiber layer (15) and the two additional plates which are arranged in epoxy resin, and manufacturing an automobile energy absorption piece by using a prepreg processing technology;
s85, providing an energy absorption box body, and forming a plurality of pairs of matching holes and a mounting plate on the side of each matching hole on the energy absorption box body (21) by using a punching process and a flanging process;
s86, installing the automobile energy absorption piece (1) between a pair of matching holes opposite to the energy absorption box body (21), and extending one ends of two additional plates out of the matching holes;
and S87, fixing the additional plate and the mounting plate through bolts, and bonding and fixing the automobile energy absorption piece (1) and the inner wall of the energy absorption box body (21).
10. The method according to claim 9, wherein the single-layer carbon fiber cloth in the first carbon fiber layer (11) is arranged symmetrically to the fiber direction of the single-layer carbon fiber cloth in the third carbon fiber layer (15);
the fiber directions of a plurality of single-layer carbon fiber cloths of the second carbon fiber layer (12) are symmetrically arranged, and the fiber direction of each single-layer carbon fiber cloth in the second carbon fiber layer is sequentially 0 degree, 45 degrees, 0 degree, 45 degrees and 0 degree from bottom to top.
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| CN201910427072.7A CN111976637B (en) | 2019-05-21 | 2019-05-21 | Automobile energy absorbing piece, energy absorbing box and manufacturing method thereof |
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| CN201910427072.7A CN111976637B (en) | 2019-05-21 | 2019-05-21 | Automobile energy absorbing piece, energy absorbing box and manufacturing method thereof |
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| CN104401277A (en) * | 2014-10-24 | 2015-03-11 | 奇瑞汽车股份有限公司 | Automobile anticollision structure part and preparation method thereof |
| CN204641630U (en) * | 2015-04-16 | 2015-09-16 | 南京理工大学 | Automobile-used inserted sheet filled type foamed aluminium energy-absorption box |
| CN108583485A (en) * | 2018-05-25 | 2018-09-28 | 大连理工大学 | A kind of more born of the same parents' metal-based carbon fiber composite thin wall endergonic structures and its preparation process |
| CN210652996U (en) * | 2019-05-21 | 2020-06-02 | 广州汽车集团股份有限公司 | Automobile energy absorption piece, energy absorption box and automobile |
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2019
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104401277A (en) * | 2014-10-24 | 2015-03-11 | 奇瑞汽车股份有限公司 | Automobile anticollision structure part and preparation method thereof |
| CN204641630U (en) * | 2015-04-16 | 2015-09-16 | 南京理工大学 | Automobile-used inserted sheet filled type foamed aluminium energy-absorption box |
| CN108583485A (en) * | 2018-05-25 | 2018-09-28 | 大连理工大学 | A kind of more born of the same parents' metal-based carbon fiber composite thin wall endergonic structures and its preparation process |
| CN210652996U (en) * | 2019-05-21 | 2020-06-02 | 广州汽车集团股份有限公司 | Automobile energy absorption piece, energy absorption box and automobile |
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| CN111976637B (en) | 2024-06-07 |
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