CN213768472U - Novel separable steel-plastic mixed anti-collision beam energy absorption box - Google Patents
Novel separable steel-plastic mixed anti-collision beam energy absorption box Download PDFInfo
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- CN213768472U CN213768472U CN202021941025.9U CN202021941025U CN213768472U CN 213768472 U CN213768472 U CN 213768472U CN 202021941025 U CN202021941025 U CN 202021941025U CN 213768472 U CN213768472 U CN 213768472U
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Abstract
A novel separable steel-plastic mixed anti-collision beam energy absorption box comprises an energy absorption box body and a rear mounting plate, wherein the energy absorption box body and the rear mounting plate are designed in a split mode, and the energy absorption box body is composed of an energy absorption box shell and internal reinforcing ribs; the rear mounting plate is made of high-strength steel materials, and the internal reinforcing ribs comprise cylindrical ribs and transverse ribs; the cylinder ribs are arranged in the middle, and the transverse ribs are positioned on the outer circumference of the cylinder ribs and are in a transmitting shape; the rear mounting plate is provided with a mounting hole; and the top of the energy absorption box shell is provided with a mounting hole which is connected with the anti-collision beam cross beam through a flange bolt. The steel-plastic mixed anti-collision beam energy absorption box effectively reduces the weight of the anti-collision beam energy absorption box on the premise of ensuring the energy absorption requirement; the high-strength steel plate and the short fiber reinforced thermoplastic composite material play the advantages of the two materials, and obtain the energy-absorbing box product with performance and formability meeting the requirements.
Description
Technical Field
The utility model relates to an energy-absorbing box of car anticollision roof beam, concretely relates to novel separable's steel is moulded and is mixed crashproof roof beam energy-absorbing box, steel is moulded the preparation and the equipment that mix the energy-absorbing box, and the energy-absorbing box structure is high strength steel board, fibre reinforcing thermoplasticity combined material extrusion strengthening rib and fibre reinforcing thermoplasticity combined material shell of moulding plastics.
Background
The anti-collision beam is a device for reducing the impact energy absorbed when a vehicle is collided, and consists of a main beam and an energy absorption box which are connected with a mounting plate of the vehicle, wherein the main beam and the energy absorption box can effectively absorb the impact energy when the vehicle is collided at a low speed, the damage of the impact force to a vehicle body longitudinal beam is reduced as much as possible, and the protective effect of the anti-collision beam on the vehicle is exerted, so that the material and the structure of the energy absorption box are of great importance.
The traditional anti-collision beam energy absorption box is made of metal materials, as shown in figure 1, the energy absorption box is of an original steel structure and mainly comprises a front mounting plate 1, a rear mounting plate 2, a left energy absorption box body 31 and a right energy absorption box body 32, the anti-collision beam energy absorption box is formed by stamping, punching and welding, the wall thickness of the box body of the original steel energy absorption box is 1.4mm, the thicknesses of the front mounting plate 1 and the rear mounting plate 2 are 2mm, the total weight of the steel energy absorption box is 1.01kg, the traditional energy absorption box is significant in weight, the forming process is complex, the process cost is high, the production efficiency is low, and the problem of welding failure can exist.
Along with the development of light weight of automobiles and the requirement of environmental protection, the thermoplastic composite material is increasingly used in automobiles because of the advantages of light weight, high specific strength, impact resistance, corrosion resistance, easy molding, fatigue resistance, high material utilization rate, recyclability and the like, and a new application approach is opened for light weight of automobiles. However, the all-plastic crash-proof beam energy absorption box has the problems that the rigidity of the supporting plate is insufficient, the height of the internal reinforcing ribs is high, the thickness is thin, and demolding is not good, so that the longitudinal beam deforms due to uneven stress in the low-speed collision process, and the energy absorption efficiency of the energy absorption box is influenced.
The fiber-reinforced thermoplastic composite material has a density of 1.1-1.6 g/cm3, and can be classified into short fiber-reinforced thermoplastic composite materials, long fiber-reinforced thermoplastic composite materials, and continuous fiber-reinforced thermoplastic composite materials according to the fiber length. Although the short fiber reinforced material has low mechanical property, the short fiber reinforced material can be used for injection molding of various complex components due to excellent melt fluidity, and simultaneously can be used for extrusion molding of components with consistent section shapes, so that certain products with complex structures and reinforcing ribs can be molded by structural design.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel but disconnect-type steel is moulded and is mixed crashproof roof beam energy-absorbing box is moulded crashproof roof beam energy-absorbing box that fibre reinforcement thermoplasticity combined material and high strength steel mix, adopts moulding plastics, extrusion and punching press shaping respectively, after the combination is got up, when showing and subtracting heavy, utilizes the steel sheet to reduce the overall cost.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a novel but steel of disconnect-type is moulded and is mixed crashproof roof beam energy-absorbing box, includes energy-absorbing box body and back mounting panel, energy-absorbing box body and back mounting panel adopt split type design, the energy-absorbing box body comprises energy-absorbing box shell and inside strengthening rib.
Specifically, the energy absorption box shell and the internal reinforcing ribs are formed by injection molding of short fiber reinforced thermoplastic composite materials, and the internal reinforcing ribs are formed by an extrusion process.
In the short fiber reinforced thermoplastic composite material, the fiber mass content is 20-60%, wherein the thermoplastic matrix is one of thermoplastic resins such as polypropylene, nylon, polyester and polyphenyl ether, and the reinforced fiber is one or more of glass fiber, carbon fiber and basalt fiber.
Specifically, the rear mounting plate is made of high-strength steel materials and is formed by stamping high-strength steel plates.
Further, the internal reinforcing ribs comprise cylindrical ribs and transverse ribs; the cylinder ribs are arranged in the middle, and the transverse ribs are positioned on the outer circumference of the cylinder ribs and are in a transmitting shape.
Further, the drum muscle can outwards extend, forms the spout, the back mounting panel is trompil in the middle, along the inside extension formation inner flange in hole, and the spout that the drum muscle outwards extended the formation forms the joint with inner flange and fixes.
Furthermore, a second mounting hole is formed in the rear mounting plate.
Furthermore, the energy-absorbing box body extends outwards to form a flange face, the flange face is provided with a through hole, and the energy-absorbing box body and the rear mounting plate are fixedly mounted through the through hole.
Furthermore, grooves are formed in the periphery and the top surface of the interior of the energy absorption box shell, and the internal reinforcing ribs are matched with the grooves.
Preferably, the section of the energy absorption box shell is of a square-shaped structure.
Preferably, the top of the energy absorption box shell is provided with a first mounting hole which is connected with the anti-collision beam through a flange bolt.
Preferably, the crash box can be designed with a crush inducer channel as desired.
The rear mounting plate is provided with five mounting holes II which are connected with the energy-absorbing box body together with the automobile longitudinal beam in a bolt or riveting mode, and the mounting holes II are formed in an integral punching mode.
The rear mounting plate of the energy absorption box is a high-strength steel plate with a hole in the middle, the hole is formed in the middle, further weight reduction of the anti-collision beam is facilitated, the rigidity of the whole high-strength steel plate can be further improved through the flanges around the round hole, meanwhile, the flanges are arranged inside the cylindrical reinforcing rib, the effect of limiting the sliding of the high-strength steel plate in the collision process is achieved, stamping forming is adopted, and the thickness is 0.8-1.5 mm.
The reinforcing ribs in the energy absorption box are of a structure of a cylinder and transverse ribs, the wall thickness is 1.5-2.5mm, the length is consistent with the height of the shell of the energy absorption box, and the energy absorption box is extruded and formed by adopting short fiber reinforced thermoplastic composite materials. The matching mode solves the problem that the injection molding energy absorption box is too high in height, and the inner reinforcing ribs cannot be too thick to cause difficult demolding.
Has the advantages that:
1. the novel steel-plastic mixed anti-collision beam energy absorption box effectively reduces the weight of the anti-collision beam energy absorption box on the premise of ensuring the energy absorption requirement; the high-strength steel plate and the short fiber reinforced thermoplastic composite material play the advantages of the two materials, and obtain the energy-absorbing box product with performance and formability meeting the requirements.
2. Compared with the traditional steel energy absorption box, the steel energy absorption box adopts injection molding, extrusion and stamping processes, and a bolt and a chute are connected in a matching mode, so that the steel energy absorption box is free of welding procedures, simple to assemble and capable of improving production efficiency.
3. For plastic energy-absorbing box shell, adopt energy-absorbing box shell and inside muscle separately to shape, inside muscle adopts the extrusion moulding mode, has simplified the mould structure, reduces the die sinking cost, adopts high strength steel board as the support of energy-absorbing box, has improved the stability of whole anticollision roof beam, when improving energy-absorbing box compression efficiency, has played fine guard action to the longeron.
4. By adopting the mode of injection molding/extrusion of the fiber reinforced thermoplastic composite material and punch forming of the steel plate to the energy absorption box, when low-speed collision occurs, the steel plate is not deformed, and only the shell and the inner ribs of the energy absorption box need to be replaced due to the detachable connection of the bolts, so that the maintenance cost is reduced.
5. The inner reinforcing ribs and the shell are matched, and the inner reinforcing ribs and the shell are firmly connected in a widening mode in the collision process, so that the energy absorption efficiency is improved.
6. The back mounting panel, the centre trompil does benefit to further subtracting of anticollision roof beam and weighs, and the rigidity of high-strength steel board can further be improved to the flange around the round hole, and simultaneously, the flange plays the gliding effect of restriction at the collision in-process in the inside of drum strengthening rib.
7. In the early test verification stage, the universality of the internal reinforcing ribs is high, the internal reinforcing ribs with different thicknesses can be processed on the premise of ensuring that the size of the part matched with the energy absorption box shell is unchanged, and the internal reinforcing ribs are matched with the energy absorption box shell for testing, so that the experimental expense is saved.
8. The adopted fiber reinforced thermoplastic composite material can be recycled, and meets the requirement of environmental protection.
9. When collision occurs, the energy absorption box needs to be collapsed to absorb energy, so that the damage to a vehicle body and a human body is reduced and a protection effect is achieved; meanwhile, the mounting plate is required to have higher rigidity and strength, so that excessive deformation and cracking can not occur in the collision process.
Drawings
The present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a conventional crash box made of original steel.
Fig. 2 is the utility model discloses steel is moulded and is mixed crashproof roof beam energy-absorbing box structure sketch map is moulded.
Fig. 3 is a schematic structural view of another angle energy-absorbing box of the present invention.
Fig. 4 is a schematic structural view of the energy-absorbing box of the present invention.
Fig. 5 is a schematic view of the structure of the internal reinforcing rib of the present invention.
Fig. 6 is a schematic view of the structure of the rear mounting plate of the present invention.
FIG. 7 is a schematic structural view of the energy-absorbing box of the present invention.
Fig. 8 is the utility model discloses with crashproof beam cross beam and current former steel structure energy-absorbing box and crashproof beam cross beam mounting structure sketch map.
Reference numerals:
1-a front mounting plate; 2-rear mounting plate; 31-left energy absorption box body; 32-right of the energy-absorbing box body; 4-an energy-absorbing box body; 41-crash box housing; 42-internal reinforcement ribs; 421-cylinder ribs; 422-transverse ribs; 43-mounting hole one; 44-flange bolts; 45-flange face; 5, mounting a rear plate; 51-an inner flange; 52-mounting hole two; 6-anti-collision beam cross beam.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 2-4, a novel separable steel-plastic hybrid anti-collision beam energy absorption box comprises an energy absorption box body 4 and a rear mounting plate 5, wherein the energy absorption box body 4 and the rear mounting plate 5 are designed in a split mode, and the energy absorption box body 4 is composed of an energy absorption box shell 41 and internal reinforcing ribs 42.
Preferably, the crash box outer shell 41 and the internal reinforcement 42 are injection molded from a short fiber reinforced thermoplastic composite.
Preferably, the rear mounting plate 5 is made of high-strength steel, and the rear mounting plate 5 is formed by stamping high-strength steel plates and has a thickness of 0.8 mm.
The rear mounting plate 5 of the energy-absorbing box needs high rigidity and strength, and is required to deform as little as possible when collision occurs so as to improve the collapse rate of the energy-absorbing box and ensure the energy-absorbing effect of the energy-absorbing box, and meanwhile, the collision force is uniformly transmitted to the longitudinal beam, so that the large deformation of the longitudinal beam is avoided. Especially in low-speed collisions, the RCAR test requires that the longitudinal beams not deform to ensure the maintenance economy of the vehicle. At present, compared with aluminum alloy and composite materials, the high-strength steel plate has the advantages of large elastic modulus, good rigidity, capability of meeting the performance requirement of the mounting plate when the thickness is very small, and cost advantage.
The internal ribs 42 are formed by an extrusion process.
Referring to fig. 5, the internal reinforcing rib 42 includes a cylindrical rib 421 and a transverse rib 422; the cylindrical rib 421 is in the middle, and the transverse rib 422 is located on the outer circumference of the cylindrical rib 421 and is in a radiation shape.
Preferably, the number of the transverse ribs 422 is 4.
Preferably, the cylindrical ribs 421 can extend outward to form sliding grooves.
Preferably, the inner reinforcement 42 is widened where it engages the crash box shell.
Referring to fig. 6, the rear mounting plate 5 is provided with a hole in the middle, an inner flange 51 is formed by extending inwards along the hole, a sliding groove formed by extending outwards the cylindrical rib 421 and the inner flange 51 are clamped and fixed, the inner flange 51 supports the inner reinforcing rib 42 of the energy absorption box shell 41, and the phenomenon that the inner reinforcing rib 42 moves and the energy absorption effect is poor in the collision process is avoided.
Preferably, the crash box outer shell 41 and the internal reinforcing ribs 42 are made of glass fiber reinforced polypropylene composite.
The energy absorption box is characterized in that a glass fiber reinforced polypropylene material is adopted to form an energy absorption box shell and internal reinforcing ribs, the energy absorption box shell and the internal reinforcing ribs are assembled with a high-strength steel mounting plate to replace an energy absorption box made of original steel, and a glass fiber reinforced polypropylene composite material is adopted to injection mold the energy absorption box connected with a high-strength steel plate in a punching mode, wherein the internal reinforcing ribs are of a structure that a cylinder is provided with 4 short transverse ribs, the wall thickness is 2mm, and the length is 160 mm; the thickness of the rear mounting plate of the energy absorption box is 0.8mm, the total weight of the energy absorption box is 0.56kg, and compared with the energy absorption box made of original steel, the weight reduction rate of the energy absorption box is up to 44.6%.
Preferably, the rear mounting plate 5 is provided with a second mounting hole 52 which is a through hole structure and is connected with the energy absorption box shell and the automobile longitudinal beam through a bolt or a riveting mode, and the second mounting hole 52 is formed in an integral punching mode.
Preferably, the number of the second mounting holes 52 is 5.
In particular, the diameter of the through hole structure is 10 mm.
Preferably, the energy-absorbing box body 4 extends outwards to form a flange face 45, the flange face 45 is provided with a through hole, and the energy-absorbing box body 4 and the rear mounting plate 5 are fixedly mounted through the through hole.
Preferably, the section of the energy absorption box shell 41 is of a square structure, the wall thickness is 3-6 mm, and the length is 100-200 mm.
Preferably, the wall thickness is 4mm and the length is 160 mm.
Preferably, grooves are formed in the periphery and the top surface of the interior of the crash box shell 41, and the inner reinforcing ribs 42 are matched with the grooves to play a supporting role.
The square-shaped structure can reduce the weight of the energy absorption box on one hand, and is simple to form and beneficial to cost control on the other hand. And the inner reinforcing ribs are matched, so that energy can be absorbed in time and a buffering effect can be achieved when collision occurs.
Referring to fig. 7-8, the top of the energy-absorbing box shell 41 is provided with a first mounting hole 43, and the energy-absorbing box is connected with the anti-collision beam cross beam 6 through a flange bolt 44 in order to ensure that the energy-absorbing box is firmly connected with the anti-collision beam cross beam.
Preferably, the first mounting hole 43 has a diameter of 8 mm.
Preferably, the number of the first mounting holes 43 is four.
When the energy-absorbing box is used, the top of the energy-absorbing box body 4 is connected with the anti-collision beam cross beam 6, and the high-strength steel plate is used as a support of the energy-absorbing box, so that the stability of the whole anti-collision beam is improved.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The novel separable steel-plastic hybrid anti-collision beam energy absorption box is characterized by comprising an energy absorption box body (4) and a rear mounting plate (5), wherein the energy absorption box body (4) and the rear mounting plate (5) adopt a split design, and the energy absorption box body (4) consists of an energy absorption box shell (41) and internal reinforcing ribs (42);
the internal reinforcing ribs (42) comprise cylindrical ribs (421) and transverse ribs (422); the cylindrical ribs (421) are arranged in the middle, and the transverse ribs (422) are positioned on the outer circumference of the cylindrical ribs (421) and are in a radiation shape;
drum muscle (421) can outwards extend, forms the spout, back mounting panel (5) are trompil in the middle, along the inside extension of hole formation inner flange (51), and the spout that drum muscle (421) outwards extend the formation forms the joint with inner flange (51) and fixes.
2. The crashworthy beam energy absorption box according to claim 1, wherein a second mounting hole (52) is formed on the rear mounting plate (5).
3. The crashworthy beam energy absorption box according to claim 1, wherein the energy absorption box body (4) extends outwards to form a flange surface (45), the flange surface (45) is provided with a through hole, and the energy absorption box body (4) and the rear mounting plate (5) are fixedly mounted through the through hole.
4. An impact beam energy absorption box according to claim 1, characterized in that the box shell (41) is recessed on its inner periphery and top surface, and the inner ribs (42) engage with it.
5. The crash box according to claim 1 wherein said crash box shell (41) has a cross-sectional "bell" configuration.
6. The crash box according to claim 1, wherein the top of the crash box housing (41) is provided with a first mounting hole (43) for connecting with the beam cross member (6) through a flange bolt (44).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021941025.9U CN213768472U (en) | 2020-09-08 | 2020-09-08 | Novel separable steel-plastic mixed anti-collision beam energy absorption box |
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| CN202021941025.9U CN213768472U (en) | 2020-09-08 | 2020-09-08 | Novel separable steel-plastic mixed anti-collision beam energy absorption box |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114162154A (en) * | 2021-11-10 | 2022-03-11 | 上海瓴荣材料科技有限公司 | A kind of rail transit lightweight vehicle door and its manufacturing method |
| CN114851999A (en) * | 2022-05-31 | 2022-08-05 | 南通理工学院 | New energy automobile energy-absorbing bumper |
| CN117565809A (en) * | 2024-01-12 | 2024-02-20 | 广东粤港澳大湾区黄埔材料研究院 | Composite material energy-absorbing box and anti-collision beam assembly |
-
2020
- 2020-09-08 CN CN202021941025.9U patent/CN213768472U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114162154A (en) * | 2021-11-10 | 2022-03-11 | 上海瓴荣材料科技有限公司 | A kind of rail transit lightweight vehicle door and its manufacturing method |
| CN114162154B (en) * | 2021-11-10 | 2023-11-28 | 上海瓴荣材料科技有限公司 | Light vehicle door for rail transit and manufacturing method thereof |
| CN114851999A (en) * | 2022-05-31 | 2022-08-05 | 南通理工学院 | New energy automobile energy-absorbing bumper |
| CN117565809A (en) * | 2024-01-12 | 2024-02-20 | 广东粤港澳大湾区黄埔材料研究院 | Composite material energy-absorbing box and anti-collision beam assembly |
| CN117565809B (en) * | 2024-01-12 | 2024-04-30 | 广东粤港澳大湾区黄埔材料研究院 | Composite material energy-absorbing box and anti-collision beam assembly |
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