CN116674650A - Vehicle longitudinal beam and vehicle - Google Patents

Vehicle longitudinal beam and vehicle Download PDF

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Publication number
CN116674650A
CN116674650A CN202310775216.4A CN202310775216A CN116674650A CN 116674650 A CN116674650 A CN 116674650A CN 202310775216 A CN202310775216 A CN 202310775216A CN 116674650 A CN116674650 A CN 116674650A
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CN
China
Prior art keywords
energy
energy absorbing
vehicle
connecting end
cabin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310775216.4A
Other languages
Chinese (zh)
Inventor
吴锦刚
王浩
赵德力
黄锦腾
贺劲刚
吴开丰
程远涛
张翼飞
付逸群
杨帅
敖尚兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Huitian Aerospace Technology Co Ltd
Original Assignee
Guangdong Huitian Aerospace Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Huitian Aerospace Technology Co Ltd filed Critical Guangdong Huitian Aerospace Technology Co Ltd
Priority to CN202310775216.4A priority Critical patent/CN116674650A/en
Publication of CN116674650A publication Critical patent/CN116674650A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • B62D21/152—Front or rear frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
    • B62D21/04—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members single longitudinal type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The embodiment of the invention provides a vehicle longitudinal beam and a vehicle, wherein the vehicle longitudinal beam comprises a longitudinal beam body and an energy absorbing piece, the longitudinal beam body comprises an anti-collision beam connecting end and a cabin connecting end, the anti-collision beam connecting end and the cabin connecting end are respectively positioned at two ends of the longitudinal beam body in the length direction, and the longitudinal beam body is provided with an installation cavity extending along the length direction. The energy-absorbing piece is located in the installation cavity, and the energy-absorbing piece comprises at least two energy-absorbing bodies, wherein the at least two energy-absorbing bodies are distributed along the length direction, and the strength of the at least two energy-absorbing bodies is increased from the anti-collision beam connecting end to the cabin connecting end along the length direction. In this way, the energy absorber helps to increase the stiffness and strength of the vehicle rail and helps to increase the absorption of energy during a vehicle rail collision. And because at least two energy-absorbing bodies's intensity increases to cabin body link from crashproof roof beam link to length direction, so, the cross-sectional force of vehicle longeron can appear ladder distribution from crashproof roof beam link to cabin body link, helps improving the effect of vehicle longeron crumple energy-absorbing.

Description

Vehicle longitudinal beam and vehicle
Technical Field
The invention relates to the technical field of vehicle longitudinal beams, in particular to a vehicle longitudinal beam and a vehicle.
Background
The vehicle longitudinal beam is crucial in automobile design, carries the load transferred from the chassis to the automobile body, has higher rigidity requirement on the mounting point, is a main structural member for collision energy absorption, and the energy absorption effect is an important index for evaluating the structural design of the vehicle longitudinal beam.
However, the vehicle side member of the related art has a limited energy absorption per unit length, and the vehicle side member has a problem of insufficient crush energy absorption.
Disclosure of Invention
The embodiment of the invention provides a vehicle longitudinal beam or a vehicle, which aims to solve at least one technical problem.
The embodiments of the present invention achieve the above object by the following technical means.
In a first aspect, an embodiment of the present invention provides a vehicle longitudinal beam, where the vehicle longitudinal beam includes a longitudinal beam body and an energy absorber, the longitudinal beam body includes an anti-collision beam connection end and a cabin connection end, the anti-collision beam connection end and the cabin connection end are located at two ends of the longitudinal beam body in a length direction, and the longitudinal beam body is provided with an installation cavity extending along the length direction. The energy-absorbing piece is located in the installation cavity, and the energy-absorbing piece comprises at least two energy-absorbing bodies, wherein the at least two energy-absorbing bodies are distributed along the length direction, and the strength of the at least two energy-absorbing bodies is increased from the anti-collision beam connecting end to the cabin connecting end along the length direction.
In some embodiments, each energy absorber is the same material, and the density of at least two energy absorbers increases in the length direction from the bumper beam attachment end to the cabin attachment end.
In some embodiments, the energy absorber comprises a honeycomb metal or a foam metal.
In some embodiments, the energy absorber is an interference fit with the rail body.
In some embodiments, the energy absorber further comprises at least one connector, each connector being connected to any adjacent two energy absorbers.
In some embodiments, the connector is a metal plate having first and second opposed surfaces, the first surface being bonded to one of the two adjacent energy absorbing bodies and the second surface being bonded to the other of the two adjacent energy absorbing bodies.
In some embodiments, the number of the installation cavities is a plurality, the installation cavities are distributed along the thickness direction of the longitudinal beam body, each installation cavity is provided with an energy absorbing piece, and at least two energy absorbing pieces are distinguished in strength in the same longitudinal section perpendicular to the length direction.
In some embodiments, the rail body is a front rail, the bumper beam attachment end is a front bumper beam attachment end, and the cabin attachment end is a front cabin attachment end. Or the longitudinal beam body is a rear longitudinal beam, the anti-collision beam connecting end is a rear anti-collision beam connecting end, and the cabin connecting end is a rear cabin connecting end.
In a second aspect, an embodiment of the present invention further provides a method for manufacturing a vehicle longitudinal beam according to any one of the above embodiments, the method including: providing at least two energy absorbing bodies; splicing at least two energy-absorbing bodies to form an energy-absorbing piece, wherein the strength of the at least two energy-absorbing bodies is increased along the length direction of the energy-absorbing piece; the energy absorbing piece is placed in the installation cavity of the longitudinal beam body, and the strength of the energy absorbing piece close to the connecting end of the cabin body is higher than that of the energy absorbing piece close to the connecting end of the anti-collision beam.
In some embodiments, splicing at least two energy absorbing bodies to form an energy absorbing member comprises: and bonding two adjacent energy absorbing bodies through the metal plate.
In a third aspect, an embodiment of the present invention provides a vehicle, the vehicle including an impact beam, a cabin, and a vehicle longitudinal beam, wherein a connection end of the impact beam is connected to the impact beam, and a connection end of the cabin is connected to the cabin.
The vehicle longitudinal beam comprises a longitudinal beam body and an energy absorbing piece, wherein the longitudinal beam body comprises an anti-collision beam connecting end and a cabin connecting end, and the anti-collision beam connecting end and the cabin connecting end are respectively located at two ends of the longitudinal beam body in the length direction. The longitudinal beam body is provided with a mounting cavity extending along the length direction, and the energy absorbing piece is positioned in the mounting cavity, so that the energy absorbing piece is beneficial to increasing the rigidity and strength of the vehicle longitudinal beam and is beneficial to increasing the absorption of energy in the collision process of the vehicle longitudinal beam. The energy-absorbing piece comprises at least two energy-absorbing bodies, the at least two energy-absorbing bodies are distributed along the length direction, the strength of the at least two energy-absorbing bodies is increased from the anti-collision beam connecting end to the cabin connecting end along the length direction, so that the cross-sectional force of the vehicle longitudinal beam can be distributed in a step mode from the anti-collision beam connecting end to the cabin connecting end, and the effect of collapsing and energy-absorbing of the vehicle longitudinal beam is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic structural diagram of a vehicle according to an embodiment of the present invention.
Fig. 2 shows a partial schematic structure of the vehicle of fig. 1.
Fig. 3 shows a schematic structural view of a vehicle longitudinal beam in a disassembled state according to an embodiment of the present invention.
FIG. 4 illustrates an exploded structural schematic view of a single energy absorber of the vehicle rail of FIG. 3.
Fig. 5 shows a schematic structural view of another part of the vehicle of fig. 1.
Fig. 6 shows a schematic view of the cross-sectional forces of the vehicle longitudinal beam of fig. 2.
Fig. 7 shows a flow diagram of a method for producing the vehicle longitudinal beam of fig. 3.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the following description of the present invention will be made in detail with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the invention. All other embodiments, based on the embodiments of the invention, which a person skilled in the art would obtain without making any inventive effort, are within the scope of the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1 and 2 together, the present embodiment provides a vehicle 100, where the vehicle 100 includes an impact beam 20, a cabin 30, and a vehicle longitudinal beam 10, and the vehicle longitudinal beam 10 is connected to the impact beam 20 and the cabin 30. In this manner, the vehicle rail 10 may provide support for the body of the vehicle 100, and in the event of a collision accident, the vehicle rail 10 may collapse to absorb energy to mitigate injury to the occupants.
The vehicle 100 may be a land-based vehicle, a flying vehicle, a land-air vehicle, a sea-air vehicle, or a vehicle for other purposes. The vehicle 100 may be a vehicle powered by conventional energy sources such as gasoline and diesel, or may be a new energy vehicle such as a hybrid electric vehicle, a pure electric vehicle, or a fuel cell electric vehicle. In other embodiments, the vehicle 100 may be other types of vehicles.
Referring to fig. 2 and 3 together, in some embodiments, the vehicle longitudinal beam 10 includes a longitudinal beam body 11 and an energy absorber 12, the longitudinal beam body 11 includes an anti-collision beam connecting end 111 and a cabin connecting end 112, the anti-collision beam connecting end 111 and the cabin connecting end 112 are respectively located at two ends of the longitudinal beam body 11 in the length direction X, the vehicle longitudinal beam 10 may be connected to the anti-collision beam 20 through the anti-collision beam connecting end 111, and the vehicle longitudinal beam 10 may be connected to the cabin 30 through the cabin connecting end 112. Wherein the stringer body 11 may be a metal piece, for example the stringer body 11 may be an aluminum alloy, which helps to increase the strength of the stringer body 11.
The rail body 11 is provided with a mounting cavity 113 extending in the length direction X, and the energy absorbing member 12 is located in the mounting cavity 113, for example, the energy absorbing member 12 may be coated with a structural adhesive and bonded in the mounting cavity 113, the energy absorbing member 12 contributing to the rigidity and strength of the vehicle rail 10. In this way, the longitudinal beam body 11 can collapse to absorb energy, and the energy absorbing piece 12 can collapse to absorb energy, so that the energy absorption of the vehicle longitudinal beam 10 in the frontal collision process can be improved.
In some embodiments, the energy absorber 12 includes at least two energy absorbers 121, the at least two energy absorbers 121 being distributed along the length direction X, the strength of the at least two energy absorbers 121 increasing along the length direction X from the bumper beam attachment end 111 to the cabin attachment end 112. In this way, the cross-sectional force of the vehicle longitudinal beam 10 can be distributed stepwise from the anti-collision beam connecting end 111 to the cabin connecting end 112, which is helpful for improving the collapse energy absorption effect of the vehicle longitudinal beam 10.
Wherein, at least two means two or more than two, for example, the energy absorbing member 12 may include two energy absorbing bodies 121, three energy absorbing bodies 121, four energy absorbing bodies 121, five energy absorbing bodies 121 or other number of energy absorbing bodies 121, and may be specifically set according to practical situations.
Since the cross-sectional force is related to the strength of the energy absorber 121, it can be seen from FIG. 4 that the cross-sectional force F of the vehicle longitudinal beam 10 f The relation of the cross-sectional force F of the side member body 11 and the cross-sectional force F of the energy absorber 121 is:
F f ＝F+f(1)；
when the energy absorbing member 12 includes three energy absorbing bodies 121 and the strength of the three energy absorbing bodies 121 increases from the bumper beam attachment end 111 to the cabin attachment end 112 along the length direction X, the cross-sectional forces of the three energy absorbing bodies 121 from the bumper beam attachment end 111 to the cabin attachment end 112 are f1, f2, and f3, respectively, and are separated from the three energy absorbing bodies 121The section forces of the corresponding vehicle longitudinal beam 10 sections are F f1 、F f2 And F f3 As can be seen from the relation (1), F is f1 ＝F+f1，F f2 ＝F+f2，F f3 ＝F+f3。
Since the cross-sectional force F of the energy absorber 12 is proportional to the strength, the greater the cross-sectional force F of the energy absorber 121, where F1 < F2 < F3, the cross-sectional force F of the corresponding position of the vehicle longitudinal beam 10 f1 ＜F f2 ＜F f3 This helps to achieve a cross-sectional force F of the vehicle longitudinal beam 10 f Can be distributed from the anti-collision beam connecting end 111 to the cabin connecting end 112 in a step manner, and is helpful for ensuring that the vehicle longitudinal beam 10 can effectively collapse and absorb energy.
In some embodiments, a portion of the energy absorber 121 in the same energy absorber 12 increases in strength along the length direction X from the bumper beam attachment end 111 to the cabin attachment end 112. For example, the energy absorbing member 12 includes N energy absorbing bodies 121 distributed along a length direction X, and at least (N-M) energy absorbing bodies 121 increase in strength from the bumper beam attachment end 111 to the cabin attachment end 112 along the length direction X, where N is a positive integer greater than or equal to 3 and M is a positive integer less than or equal to (N-2).
In some embodiments, the strength of all energy absorbing bodies 121 in the same energy absorbing member 12 increases in the length direction X from the bumper beam attachment end 111 to the cabin attachment end 112. In this manner, the vehicle longitudinal beam 10 is facilitated to be enhanced in the collapsing energy absorbing effect.
In some embodiments, the lengths of the energy absorbing bodies 121 in the same energy absorbing member 12 may be the same, may be different, or may be partially the same. For example, each energy absorber 121 in the same energy absorber 12 is the same length. For example, the lengths of the energy absorbing bodies 121 in the same energy absorbing member 12 are different, and the lengths of the energy absorbing bodies 121 in the same energy absorbing member 12 may increase from the bumper beam connecting end 111 to the cabin connecting end 112 along the length direction X. For example, only a portion of the energy absorbing body 121 of the same energy absorbing member 12 is the same length.
In some embodiments, energy absorber 121 can include a honeycomb metal piece or a foam metal piece. For example, energy absorber 121 can comprise aluminum honeycomb and for example, energy absorber 121 can comprise aluminum foam. Thus, the honeycomb metal piece has the advantages of light weight, high rigidity, good strength and the like, the foam metal piece has the advantages of small density, high impact absorption capability, easiness in processing and installation and the like, and the honeycomb metal piece or the foam metal piece is beneficial to improving the energy absorption stability of the energy absorber 121 in the collision process, improving the energy absorption effect of the energy absorber 121 and realizing the light weight of the vehicle longitudinal beam 10.
In some embodiments, the materials of each energy absorbing body 121 are the same, and the density of at least two energy absorbing bodies 121 increases from the bumper beam connecting end 111 to the cabin connecting end 112 along the length direction X, so that the strength of the vehicle longitudinal beam 10 can be changed by changing the cross-sectional force of the vehicle longitudinal beam 10 by changing the energy absorbing members 12 with different densities, and further changing the cross-sectional force of the corresponding position of the vehicle longitudinal beam 10, which is helpful for adjusting the strength of the vehicle longitudinal beam 10 conveniently.
For example, when the energy absorbing member 12 includes two energy absorbing bodies 121, the two energy absorbing bodies 121 are made of the same material, for example, the two energy absorbing bodies 121 may be made of cellular aluminum or foamed aluminum, and when the strength of the vehicle longitudinal beam 10 needs to be adjusted, the strength of the corresponding position of the vehicle longitudinal beam 10 may be adjusted by replacing the energy absorbing bodies 121 with different densities, which is helpful for facilitating the adjustment of the strength of the vehicle longitudinal beam 10 and improving the adjustment flexibility of the vehicle longitudinal beam 10.
For another example, when the energy absorbing member 12 includes three energy absorbing bodies 121, the three energy absorbing bodies 121 are made of the same material, for example, the three energy absorbing bodies 121 may be made of cellular aluminum or foamed aluminum, and when the strength of the vehicle longitudinal beam 10 needs to be adjusted, the strength of the corresponding position of the vehicle longitudinal beam 10 may be adjusted by replacing the energy absorbing bodies 121 with different densities, which is helpful for adjusting the strength of the vehicle longitudinal beam 10, and is helpful for improving the adjustment flexibility of the vehicle longitudinal beam 10.
In some embodiments, the energy absorber 121 is an interference fit with the rail body 11. In this way, when the energy absorber 121 is mounted on the longitudinal beam body 11, elastic pressure can be generated, which is conducive to improving the tightness of the energy absorber 121 mounted on the longitudinal beam body 11 and enhancing the energy absorbing effect of the energy absorber 121.
Referring to fig. 3 and 5, in some embodiments, the energy absorber 12 further includes at least one connecting body 122, and each connecting body 122 is connected to any two adjacent energy absorbers 121. In this way, the two adjacent energy absorbing bodies 121 can be connected by the connecting body 122, which is helpful for facilitating the connection of the energy absorbing bodies 121 and improving the compactness of the vehicle longitudinal beam 10.
Wherein at least one means one or more than two, for example, the energy absorbing member 12 may include two connectors 122, three connectors 122, four connectors 122, five connectors 122, or other number of connectors 122, and may specifically be set according to the number of energy absorbing bodies 121. For example, when the number of the energy absorbing bodies 121 is two, the number of the connecting bodies 122 is one; for example, when the number of the energy absorbing bodies 121 is three, the number of the connecting bodies 122 is two, and the two connecting bodies 122 are respectively positioned between the two adjacent energy absorbing bodies 121; for example, when the number of the energy absorbing bodies 121 is four, the number of the connecting bodies 122 is three, and the three connecting bodies 122 are respectively located between two adjacent energy absorbing bodies 121.
In some embodiments, the connector 122 may be a metal plate, for example, the connector 122 may be an aluminum plate, a steel plate, etc., which may help to increase the strength of the connector 122 and may help to increase the strength of the vehicle rail 10. The connecting body 122 can have first and second opposed surfaces 1221 and 1222, the first surface 1221 being bonded to one of the two adjacent energy absorbing bodies 121 and the second surface 1222 being bonded to the other of the two adjacent energy absorbing bodies 121.
Illustratively, one energy absorber 121 of two adjacent energy absorbers 121 may be bonded to the first surface 1221 by structural adhesive, and the other energy absorber 121 of two adjacent energy absorbers 121 may be bonded to the second surface 1222 by structural adhesive. As such, first surface 1221 and second surface 1222 of connecting body 122 facilitate increasing the compactness of the structure of energy absorbing member 12 and facilitate increasing the energy absorbing effect of energy absorbing member 12.
In some embodiments, the number of the installation cavities 113 may be plural, the installation cavities 113 are distributed along the thickness direction Y of the stringer body 11, each installation cavity 113 is equipped with energy absorbing members 12, and at least two of the energy absorbing members 12 are distinguished in strength in the same longitudinal section perpendicular to the length direction X.
In this way, the cross-sectional forces of the vehicle longitudinal beam 10 along the thickness direction Y may be different, so that the deformation mode of the vehicle longitudinal beam 10 along the thickness direction Y may be flexibly adjusted according to practical requirements, which is helpful for improving the flexibility of adjusting the vehicle longitudinal beam 10 and helping for stabilizing and absorbing energy of the vehicle longitudinal beam 10.
For example, the number of the installation cavities 113 may be two, and both the installation cavities 113 are equipped with the energy absorbing members 12, at this time, the vehicle longitudinal beam 10 may be in an upper layer structure and a lower layer structure, so that the energy absorbing members 12 meeting the strength condition may be replaced according to the actual deformation situation during the collision of the vehicle longitudinal beam 10, for example, the upper layer energy absorbing member 12 or the lower layer energy absorbing member 12 of the vehicle longitudinal beam 10 may be replaced, and for example, the upper layer energy absorbing member 12 and the lower layer energy absorbing member 12 of the vehicle longitudinal beam 10 may be replaced at the same time, so as to meet the purpose of controlling the deformation mode of the vehicle longitudinal beam 10.
For example, the number of the installation cavities 113 may be three, and the three installation cavities 113 are all provided with the energy absorbing pieces 12, at this time, the vehicle longitudinal beam 10 may be in an upper, middle and lower three-layer structure, so that the energy absorbing pieces 12 meeting the strength condition may be replaced according to the actual deformation situation during the collision of the vehicle longitudinal beam 10, for example, any one of the upper, middle or lower energy absorbing pieces 12 of the vehicle longitudinal beam 10 may be replaced, for example, any two of the upper, middle and lower energy absorbing pieces 12 of the vehicle longitudinal beam 10 may be replaced at the same time, and for example, the three energy absorbing pieces 12 of the upper, middle and lower layers of the vehicle longitudinal beam 10 may be replaced at the same time, so as to meet the purpose of controlling the deformation mode of the vehicle longitudinal beam 10.
In this way, the user can adaptively adjust the density of the energy absorbing member 12 at the corresponding position of the vehicle longitudinal beam 10 according to the actual requirement, which is helpful for improving the flexibility of adjusting the vehicle longitudinal beam 10 and better improving the strength of the vehicle longitudinal beam 10.
In some embodiments, the thickness direction Y of the rail body 11 may be the height direction of the vehicle 100.
Referring to fig. 2 and 6 together, in some embodiments, the rail body 11 may be a front rail 114, the impact beam connection end 111 may be a front impact beam connection end 1111, the cabin connection end 112 may be a front cabin connection end 1121, the front impact beam connection end 1111 may be connected to the front impact beam 21 of the vehicle 100, for example, the front impact beam connection end 1111 may be connected to the front impact beam 21 by a connector, for example, a connection bolt, and the front cabin connection end 1121 may be connected to the front cabin 31 of the vehicle 100, for example, the front cabin connection end 1121 may be connected to the engine cabin by a connector, for example, a connection bolt.
In this manner, when the head of the vehicle 100 is impacted, the vehicle longitudinal beam 10 may collapse to absorb energy, helping to reduce injury to the front passenger.
In some embodiments, the rail body 11 may be the rear rail 115, the impact beam connection end 111 may be the rear impact beam connection end 1112, the cabin connection end 112 may be the rear cabin connection end 1122, the rear impact beam connection end 1112 may be connected to the rear impact beam 22 of the vehicle 100, for example, the rear impact beam connection end 1112 may be connected to the rear impact beam 22 by a connection member, for example, a connection bolt, and the rear cabin connection end 1122 may be connected to the rear cabin 32 of the vehicle 100, for example, the rear cabin connection end 1122 may be connected to the rear floor of the trunk by a connection member, for example, a connection bolt.
In this manner, when the rear of the vehicle 100 is impacted, the vehicle longitudinal beam 10 may collapse to absorb energy, helping to reduce injury to the rear passengers.
Referring to fig. 7, the embodiment of the present invention further provides a method for manufacturing the vehicle longitudinal beam 10 according to any one of the above embodiments, wherein the method includes steps 010, 020 and 030.
Step 010: at least two energy absorbing bodies 121 are provided.
At least two energy-absorbing bodies 121 are provided according to actual demands, for example, two energy-absorbing bodies, three energy-absorbing bodies, four energy-absorbing bodies, five energy-absorbing bodies or other number of energy-absorbing bodies may be provided.
The energy absorber 121 may comprise aluminum honeycomb or aluminum foam, and may be specifically set according to actual requirements.
Step 020: at least two energy-absorbing bodies 121 are spliced to form the energy-absorbing member 12, wherein the strength of the at least two energy-absorbing bodies 121 increases along the length direction X of the energy-absorbing member 12.
For example, when the number of the energy absorbing bodies 121 is two, the two energy absorbing bodies 121 may be spliced by connecting one connecting body 122. For example, the two energy absorbing bodies 121 may be adhered to two opposite surfaces of the connecting body 122 by a structural adhesive, which may help facilitate connection of the two energy absorbing bodies 121 and may help improve the structural compactness of the energy absorbing member 12.
For example, when the number of the energy absorbing bodies 121 is three, the three energy absorbing bodies 121 may be spliced by connecting the two connecting bodies 122. For example, two adjacent energy absorbing bodies 121 can be adhered to two opposite surfaces of the connecting body 122 by structural adhesive, which can facilitate connection of the two energy absorbing bodies 121 and improve the compactness of the structure of the energy absorbing member 12.
Wherein the strength of at least two energy absorbing bodies 121 increases along the length direction of the energy absorbing member 12, for example, when the number of energy absorbing bodies 121 is two, the strength of two energy absorbing bodies 121 increases along the length direction of the energy absorbing member 12; for example, when the number of the energy absorbing bodies 121 is three, the strength of the three energy absorbing bodies 121 increases along the length direction of the energy absorbing member 12; for example, when the number of the energy absorbing bodies 121 is four, the strength of the four energy absorbing bodies 121 increases along the length direction of the energy absorbing member 12. In this manner, the cross-sectional forces of the vehicle rail 10 may be imparted in a stepped distribution that helps to collapse the vehicle rail 10.
Step 030: the energy absorbing member 12 is placed into the mounting cavity 113 of the stringer body 11 such that the energy absorbing member 12 has a greater strength near the cabin attachment end 112 than near the impact beam attachment end 111.
For example, the longitudinal beam body 11 may be manufactured in advance by an aluminum alloy extrusion process, etc., then the surface of the energy absorbing body 121 of the energy absorbing member 12 is coated with a structural adhesive, and then the energy absorbing member 12 is placed into the longitudinal beam body 11, so that the strength of the energy absorbing member 12 near the cabin connecting end 112 is greater than that near the anti-collision beam connecting end 111.
In this way, the cross-sectional forces of the vehicle longitudinal beam 10 may exhibit a stepped profile from the bumper beam attachment end 111 to the cabin attachment end 112, helping to collapse the vehicle longitudinal beam 10 for energy absorption.
In some embodiments, splicing at least two energy absorbing bodies 121 to form an energy absorbing member 12 includes: adjacent two energy absorbing bodies 121 are bonded by a metal plate.
That is, step 20 includes step 21.
Step 21: adjacent two energy absorbing bodies 121 are bonded by a metal plate.
For example, when the number of the energy absorbing bodies 121 is two, the two energy absorbing bodies 121 may be spliced by means of metal plate connection. For example, the two energy-absorbing bodies 121 can be adhered to two opposite surfaces of the metal plate by means of structural adhesive, which is helpful for facilitating connection of the two energy-absorbing bodies 121 and improving compactness of the structure of the energy-absorbing member 12.
This helps to increase the strength of the vehicle side member 10 due to the higher strength of the metal plate.
In summary, according to the vehicle longitudinal beam 10 and the vehicle 100 provided by the embodiments of the present invention, the vehicle longitudinal beam 10 includes a longitudinal beam body 11 and an energy absorber 12, the longitudinal beam body 11 includes an anti-collision beam connection end 111 and a cabin connection end 112, and the anti-collision beam connection end 111 and the cabin connection end 112 are respectively located at two ends of the longitudinal beam body 11 in the length direction X. The rail body 11 is provided with a mounting cavity 113 extending in the longitudinal direction X, and the energy absorbing member 12 is located in the mounting cavity 113, so that the energy absorbing member 12 contributes to an increase in rigidity and strength of the vehicle rail 10 and to an increase in energy absorption during a collision of the vehicle rail 10. The energy absorbing member 12 includes at least two energy absorbing bodies 121, the at least two energy absorbing bodies 121 are distributed along the length direction X, and the strength of the at least two energy absorbing bodies 121 increases from the bumper beam connecting end 111 to the cabin connecting end 112 along the length direction X, so that the cross-sectional force of the vehicle longitudinal beam 10 can be distributed stepwise from the bumper beam connecting end 111 to the cabin connecting end 112, which is helpful for improving the crumple energy absorbing effect of the vehicle longitudinal beam 10.
In the present invention, the term "assembled" and the like should be construed broadly unless explicitly stated or limited otherwise. For example, the connection can be fixed connection, detachable connection or integral connection; may be a mechanical connection; the connection may be direct, indirect, or internal, or may be surface contact only, or may be surface contact via an intermediate medium. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for understanding as a specific or particular structure. The description of the term "some embodiments" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In the present invention, the schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples of the present invention and features of various embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting thereof; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and they should be included in the protection scope of the present invention.

Claims (11)

1. A vehicle rail, comprising:
the longitudinal beam body comprises an anti-collision beam connecting end and a cabin connecting end, the anti-collision beam connecting end and the cabin connecting end are respectively positioned at two ends of the longitudinal beam body in the length direction, and the longitudinal beam body is provided with a mounting cavity extending along the length direction; and
the energy absorbing piece is located in the installation cavity, the energy absorbing piece comprises at least two energy absorbing bodies, the at least two energy absorbing bodies are distributed along the length direction, and the strength of at least two energy absorbing bodies is increased from the anti-collision beam connecting end to the cabin connecting end along the length direction.
2. The vehicle rail of claim 1, wherein each energy absorber is of the same material and the density of at least two energy absorbers increases along the length from the bumper beam attachment end to the cabin attachment end.
3. The vehicle rail of claim 1, wherein the energy absorber comprises a honeycomb metal or a foam metal.
4. The vehicle rail of claim 1, wherein the energy absorber is an interference fit with the rail body.
5. The vehicle rail of claim 1, wherein the energy absorber further comprises at least one connector, each of the connectors being connected to any adjacent two of the energy absorbers.
6. The vehicle rail of claim 5, wherein the connector is a metal plate having first and second opposed surfaces, the first surface being bonded to one of the two adjacent energy absorbing bodies and the second surface being bonded to the other of the two adjacent energy absorbing bodies.
7. The vehicle side member according to claim 1, wherein the number of said installation cavities is plural, the plural installation cavities are distributed in a thickness direction of said side member body, each of said installation cavities is equipped with said energy absorbing member, and in a same longitudinal section perpendicular to said longitudinal direction, at least two of said energy absorbing members are distinguished in strength.
8. The vehicle rail of claim 1, wherein the rail body is a front rail, the bumper beam attachment end is a front bumper beam attachment end, and the cabin attachment end is a front cabin attachment end;
or the longitudinal beam body is a rear longitudinal beam, the anti-collision beam connecting end is a rear anti-collision beam connecting end, and the cabin connecting end is a rear cabin connecting end.
9. A method of manufacturing a vehicle longitudinal beam according to any one of claims 1 to 8, characterized in that the method of manufacturing comprises:
providing the at least two energy absorbing bodies;
splicing the at least two energy absorption bodies to form the energy absorption piece, wherein the strength of the at least two energy absorption bodies is increased along the length direction of the energy absorption piece;
and placing the energy absorbing piece into the installation cavity of the longitudinal beam body, and enabling the strength of the energy absorbing piece close to the cabin connecting end to be greater than that of the energy absorbing piece close to the anti-collision beam connecting end.
10. The method of manufacturing of claim 9, wherein the splicing the at least two energy absorbing bodies to form an energy absorbing member comprises:
and bonding two adjacent energy absorbing bodies through a metal plate.
11. A vehicle, characterized by comprising:
an anti-collision beam;
a cabin body; and
the vehicle longitudinal beam according to any one of claims 1 to 8, the impact beam connecting end being connected to the impact beam, the cabin connecting end being connected to the cabin.
CN202310775216.4A 2023-06-27 2023-06-27 Vehicle longitudinal beam and vehicle Pending CN116674650A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310775216.4A CN116674650A (en) 2023-06-27 2023-06-27 Vehicle longitudinal beam and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310775216.4A CN116674650A (en) 2023-06-27 2023-06-27 Vehicle longitudinal beam and vehicle

Publications (1)

Publication Number Publication Date
CN116674650A true CN116674650A (en) 2023-09-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310775216.4A Pending CN116674650A (en) 2023-06-27 2023-06-27 Vehicle longitudinal beam and vehicle

Country Status (1)

Country Link
CN (1) CN116674650A (en)

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