CN220785689U - Protective device under lightweight car - Google Patents
Protective device under lightweight car Download PDFInfo
- Publication number
- CN220785689U CN220785689U CN202322318921.XU CN202322318921U CN220785689U CN 220785689 U CN220785689 U CN 220785689U CN 202322318921 U CN202322318921 U CN 202322318921U CN 220785689 U CN220785689 U CN 220785689U
- Authority
- CN
- China
- Prior art keywords
- mounting bracket
- transverse member
- hole
- mounting
- lightweight
- 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.)
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Links
- 230000001681 protective effect Effects 0.000 title description 2
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000003733 fiber-reinforced composite Substances 0.000 claims abstract description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 6
- 239000000956 alloy Substances 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 19
- 230000001012 protector Effects 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 abstract description 7
- 230000006378 damage Effects 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000011208 reinforced composite material Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- Body Structure For Vehicles (AREA)
Abstract
The utility model discloses a lightweight automobile lower protection device, which comprises a transverse member, wherein the transverse member is made of fiber reinforced composite materials or aluminum alloy materials, and is connected with a frame or a frame accessory through two mounting brackets, wherein the upper part of each mounting bracket is provided with a mounting hole, the lower part of each mounting bracket is provided with a through hole, and the transverse member passes through the through holes to form an assembly relationship with the mounting brackets; the transverse member is also sleeved with a nonmetallic suite, so that a spacing layer or a buffer layer is formed between the transverse member and the through hole. According to the utility model, through the mounting bracket with the hollow structure, the weight of the mounting bracket is reduced by 40%, a spacing layer or a buffer layer is formed between the transverse member and the through hole by the nonmetallic suite, the tensile/compressive stress of the transverse member material is balanced, and the main stress causing the damage of the transverse member is reduced. The spacer layer or cushioning layer also prevents the cross member from being worn or damaged by the mounting bracket during long term use.
Description
Technical Field
The utility model relates to the technical field of passive safety of automobiles, in particular to a lightweight automobile lower protection device.
Background
According to the requirements of national mandatory standard GB7258-2017 'safety technical conditions for motor vehicle operation', front, side and rear protection devices must be installed for trucks and special working vehicles with total mass greater than 7.5 tons. Aims to reduce the fatal injury to drivers and passengers after the collision of automobiles.
GB26511-2011 "front lower protection requirement for commercial vehicle" specifies front lower protection requirements, and GB11567-2017 "rear lower protection requirement for side face of automobile and trailer" specifies side face and rear protection requirements.
The patent discloses a rear lower part protection of a commercial vehicle with the bulletin number of CN216580433U, which adopts GB/T31539-2015 to propose a structural fiber reinforced composite material tensile section bar as a cross beam, wherein a left bracket assembly and a right bracket assembly are arranged on the same side larger end face of the cross beam in parallel, the cross beam is connected with a mounting bracket on a two-dimensional plane, the strength design of the two-dimensional plane connection structure is difficult, and the product quality is heavier in order to ensure that the product can reach the national standard.
The application number is: 2023214293002 an under-car guard made of a fibre reinforced composite material is provided comprising a cross member made of a fibre reinforced composite material, said cross member being connected to a mounting bracket by a revolute pair.
The transverse member 1 in the patent document is prepared by using the fiber reinforced composite material, so that the weight is greatly reduced, but the structure of the revolute pair is complex, the cost is high, and the rotating shaft of the revolute pair penetrates through the transverse member body, so that the material generates local stress concentration, and the allowable value of the material is reduced; while the provision of non-metallic shims between the cross member 1 and the mounting bracket 6 dampens the impact forces of the cross member. There is still dry friction on the upper/lower surface and the front of the cross member 1 which can cause physical damage failure of the cross member.
Disclosure of Invention
The utility model aims to solve the problems of heavy structural design and poor product weight of a lower protection device of a commercial vehicle, and particularly provides a light-weight lower protection device of an automobile, which can meet the requirements of relevant national standards while optimizing the structure. .
For this purpose, the technical scheme of the utility model is as follows: the utility model provides a protector under lightweight car, includes a cross member, cross member be connected with frame or frame annex through two installing support, wherein installing support upper portion is equipped with the mounting hole, its characterized in that: the lower part of the mounting bracket is provided with a through hole, and the transverse member passes through the through hole to form an assembling relationship with the mounting bracket.
The through holes are designed to form an organic whole between the mounting bracket and the transverse member without damaging the texture of the composite material of the transverse member, so that the mounting bracket is convenient to mount and material failure caused by stress concentration is avoided.
The further improvement is that: the mounting holes in the mounting support are connected with the through holes through connecting parts, and the connecting parts are in hollow structures.
The connecting part between the mounting hole and the through hole is optimized into the mounting bracket with a hollowed-out structure according to TOPO, so that the weight of the mounting bracket can be reduced by 40% while the strength requirement is met.
The further improvement is that: the front and rear sides of the mounting bracket are asymmetrically arranged, the direction facing the automobile to be bumped is defined as the front side, and the direction facing away from the automobile to be bumped is defined as the rear side; wherein the rear of the mounting bracket is also provided with a reinforcing part or a stress part outside the through hole in an extending way.
The rear of the mounting bracket is also provided with a reinforcing part or a stress part in an extending way outside the through hole, so that the impact force facing the collision direction of the automobile is absorbed by the transverse member, and then is impacted and digested by the reinforcing part or the stress part, thereby achieving the protection effect.
The further improvement is that: the reinforcing part or the stress part is in a hollow structure.
The weight of the mounting bracket is reduced, and the reinforcing ribs constructed after hollowed out can meet the design requirement through CAE analysis strength.
The further improvement is that: the transverse member is also sleeved with a nonmetallic suite, so that a spacing layer or a buffer layer is formed between the transverse member and the through hole.
The non-metallic sleeve forms a spacer or buffer layer between the cross member and the through hole, which aims to balance the tensile/compressive stress of the cross member material and reduce the principal stress value causing the cross member to break. The spacer layer or cushioning layer also prevents the cross member from being worn or damaged by the bracket during long term use after installation.
The further improvement is that: the mounting holes are further provided with second reinforcing ribs on the upper portion of the mounting support.
The arrangement of the second reinforcing ribs aims at protecting the connection strength and connection relation of the mounting holes.
The further improvement is that: the transverse member is made of a fiber reinforced composite material or an aluminum alloy material.
The transverse member prepared from the fiber reinforced composite material or the aluminum alloy material has light weight and meets the industrial requirements.
Advantageous effects
According to the utility model, through the mounting bracket with the hollow structure, the weight of the mounting bracket is reduced by 40%, and the non-metal sleeve sets a spacing layer or a buffer layer between the transverse member and the through hole, so that the tensile/compressive stress of the transverse member material can be effectively balanced, and the main stress value causing the damage of the transverse member is reduced. And meanwhile, the spacer layer or the buffer layer can also prevent the cross member from being worn and damaged by the mounting bracket in long-term use.
Drawings
Fig. 1 is a perspective view of an assembled structure of the present utility model.
Fig. 2 is a half-section exploded view of fig. 1.
Fig. 3 is a left side structural view of the present utility model.
Fig. 4 is a cross-sectional view taken along A-A of fig. 3.
In the figure, 1 is a cross member, 2 is a mounting bracket, 3 is a mounting hole, 4 is a through hole, 5 is a connecting part, 6 is a front face, and 7 is a rear face; 8 is a reinforcing or stress portion, 9 is a nonmetallic sleeve, and 10 is a second reinforcing rib.
Description of the embodiments
The utility model is shown in fig. 1-4:
The utility model provides a protector under lightweight car, includes a cross member 1, cross member 1 be connected with frame or frame annex through two installing support 2, wherein installing support 2 upper portion is equipped with mounting hole 3, installing support 2 lower part is equipped with through-hole 4, cross member 1 passes through-hole 4 and forms the assembly relation with installing support 2.
The through hole 4 is designed to form an organic whole with the mounting bracket 2 and the transverse member 1, is convenient to mount, and does not damage the texture and structure of the composite material of the transverse member.
The mounting holes 3 and the through holes 4 in the mounting bracket 2 are connected through the connecting parts 5, and the connecting parts 5 are in a hollow structure.
The connecting part between the mounting hole 3 and the through hole 4 is optimized into a hollowed-out structure according to TOPO, so that the weight of the mounting bracket can be reduced by 40%. The strength of the reinforcing ribs constructed after hollowed-out can meet the design requirement through CAE analysis.
The front and rear sides of the mounting bracket 2 are asymmetrically arranged, the direction facing the automobile to be bumped is defined as a front side 6, and the direction facing away from the automobile to be bumped is defined as a rear side 7; wherein the rear face 7 of the mounting bracket 2 is further provided with a reinforcement or stress portion 8 extending beyond the through hole 4.
The rear face 7 of the mounting bracket 2 is also provided with a reinforcing part or a stress part 8 in an extending manner outside the through hole 4, and the purpose of the mounting bracket is to absorb the impact force facing the collision direction of the automobile through the transverse member, and then the impact force is absorbed through the reinforcing part or the stress part 8, so that the protection effect is achieved.
The reinforcing part or the stress part 8 is in a hollow structure.
The weight of the mounting bracket 2 is reduced, and the strength of the reinforcing ribs constructed after hollowed-out can meet the design requirement through CAE analysis.
The cross member 1 is also provided with a non-metallic sleeve 9, which forms a spacer or buffer layer between the cross member 1 and the through hole 4.
The non-metallic sleeve 9 forms a spacer layer or protective layer between the cross member 1 and the through hole 4, which effectively balances the tensile/compressive stress of the material of the cross member 1, reducing the principal stress value that leads to failure of the cross member 1. The spacer layer or cushioning layer also prevents the cross member 1 from being worn or damaged by the mounting bracket 2 during long term use.
The mounting hole 3 is also provided with a second reinforcing rib 10 at the upper part of the mounting bracket 2.
The second reinforcing rib 10 is provided to protect the connection strength and connection relation of the mounting hole 3.
The cross member 1 is made of a fiber reinforced composite material or an aluminum alloy material.
The transverse member 1 prepared from the fiber reinforced composite material or the aluminum alloy material has light weight and meets the industrial requirements.
Claims (7)
1. The utility model provides a protector under lightweight car, includes a cross member (1), cross member (1) be connected with frame or frame annex through two installing support (2), wherein installing support (2) upper portion is equipped with mounting hole (3), its characterized in that: the lower part of the mounting bracket (2) is provided with a through hole (4), and the transverse member (1) passes through the through hole (4) to form an assembling relationship with the mounting bracket (2).
2. The lightweight under-car protection device as set forth in claim 1, wherein: the mounting holes (3) and the through holes (4) in the mounting bracket (2) are connected through the connecting parts (5), and the connecting parts (5) are in a hollow structure.
3. A lightweight automotive under protection device as claimed in claim 1 or 2, wherein: the front and rear sides of the mounting bracket (2) are asymmetrically arranged, the front side (6) is defined as facing the direction in which the automobile is bumped, and the rear side (7) is defined as facing away from the direction in which the automobile is bumped; wherein the rear surface (7) of the mounting bracket (2) is also provided with a reinforcing part or a stress part (8) outside the through hole (4).
4. A lightweight under car protector according to claim 3, characterized in that: the reinforcing part or the stress part (8) is in a hollow structure.
5. The lightweight under-car protection device as set forth in claim 1, wherein: the transverse member (1) is also sleeved with a nonmetallic sleeve (9), so that a spacing layer or a buffer layer is formed between the transverse member (1) and the through hole (4).
6. The lightweight under-car protection device as set forth in claim 1, wherein: the mounting holes (3) are also provided with second reinforcing ribs (10) at the upper part of the mounting bracket (2).
7. A lightweight automotive under protection device as defined in claim 1 or 5, wherein: the transverse member (1) is made of a fiber reinforced composite material or an aluminum alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322318921.XU CN220785689U (en) | 2023-08-29 | 2023-08-29 | Protective device under lightweight car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322318921.XU CN220785689U (en) | 2023-08-29 | 2023-08-29 | Protective device under lightweight car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220785689U true CN220785689U (en) | 2024-04-16 |
Family
ID=90657499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322318921.XU Active CN220785689U (en) | 2023-08-29 | 2023-08-29 | Protective device under lightweight car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220785689U (en) |
-
2023
- 2023-08-29 CN CN202322318921.XU patent/CN220785689U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |