CN113443016A - Vehicle body structure and automobile - Google Patents
Vehicle body structure and automobile Download PDFInfo
- Publication number
- CN113443016A CN113443016A CN202110786939.5A CN202110786939A CN113443016A CN 113443016 A CN113443016 A CN 113443016A CN 202110786939 A CN202110786939 A CN 202110786939A CN 113443016 A CN113443016 A CN 113443016A
- Authority
- CN
- China
- Prior art keywords
- floor
- reinforcing
- auxiliary frame
- cross beam
- vehicle body
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- 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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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D24/00—Connections between vehicle body and vehicle frame
- B62D24/02—Vehicle body, not intended to move relatively to the vehicle frame, and mounted on vibration absorbing mountings, e.g. rubber pads
-
- 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
Abstract
The invention discloses a vehicle body structure and an automobile, which comprise a front auxiliary frame, a floor body part and a reinforcing structure, wherein the front auxiliary frame comprises a longitudinal beam and a front auxiliary frame mounting cross beam connected to the middle part of the longitudinal beam; the floor body part is arranged on the front auxiliary frame so as to connect the longitudinal beam and the front auxiliary frame mounting cross beam, the floor body part is provided with a floor cross beam, the floor cross beam and the front auxiliary frame mounting cross beam are arranged at intervals, and the floor cross beam is connected with the longitudinal beam; the reinforcing structure is connected with the front auxiliary frame mounting cross beam and the floor cross beam. When the auxiliary vehicle receives the collision, the collision force is followed the longeron conduction extremely the floor crossbeam, and follow the longeron conduction extremely preceding sub vehicle frame installation crossbeam via additional strengthening conducts extremely the floor crossbeam to the deformation of automobile body is effectively reduced in the conduction of dispersion collision force, increases passenger's security, promotes whole car NVH performance.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an automobile body structure and an automobile.
Background
In recent years, along with the increasingly saturated automobile market, the competition among products is intensified, and the requirements of customers on the safety and comfort of the whole automobile are higher and higher. The front subframe serves as an important force transmission path during frontal collision and a transmission path of the entire vehicle NVH (Noise, Vibration and Harshness, Chinese is Noise, Vibration and sound Vibration roughness), and plays an important role in the self structure and the structure at the mounting point.
The installation point all arranges on preceding enclose bottom crossbeam before most motorcycle types on the sub vehicle frame, receives the restriction that preceding sub vehicle frame installation hard spot and floor were arranged, and the cross sectional dimension of crossbeam often receives the restriction, and when the size is less, will influence front collision safety and whole car NVH performance.
Disclosure of Invention
The invention mainly aims to provide a vehicle body structure and a vehicle, and aims to solve the problems that the front and rear mounting points of a front subframe are arranged on a front wall bottom cross beam, the cross section size of the cross beam is limited to be reduced, and the front collision safety and the NVH performance of the whole vehicle are influenced.
To achieve the above object, the present invention provides a vehicle body structure including:
the front auxiliary frame comprises a longitudinal beam and a front auxiliary frame mounting cross beam connected to the middle part of the longitudinal beam;
the floor body part is arranged on the front auxiliary frame to connect the longitudinal beam and the front auxiliary frame mounting cross beam, a floor cross beam is arranged on the floor body part and is arranged at an interval with the front auxiliary frame mounting cross beam, and the floor cross beam is connected with the longitudinal beam; and the number of the first and second groups,
and the reinforcing structure is used for connecting the front auxiliary frame mounting cross beam with the floor cross beam.
Optionally, preceding sub vehicle frame installation crossbeam is equipped with preceding sub vehicle frame mounting point structure, preceding sub vehicle frame mounting point structure is arranged in additional strengthening with between the longeron.
Optionally, the stringer comprises a first stringer section and a second stringer section;
the reinforcing structure is a reinforcing beam, and the reinforcing beam and the second longitudinal beam section are arranged side by side, so that the reinforcing beam, the second longitudinal beam section, the front auxiliary frame mounting cross beam and the floor cross beam form a quadrangle.
Optionally, the reinforcing beam includes a reinforcing portion oppositely disposed to the floor main body portion and two reinforcing side portions located at both sides of the reinforcing portion, and both the reinforcing side portions are connected to the floor main body portion.
Optionally, a flange is connected to each of the reinforced side portions, and the flange is attached to the floor body portion.
Optionally, both ends of the reinforcement beam are respectively mounted to the side wall surfaces of the front subframe mounting cross member and the floor cross member, so that the reinforcement beam is flush with the front subframe mounting cross member and the floor cross member.
Optionally, the vehicle body structure further comprises a torque box connected to the second side rail section, the torque box being located in an extending direction of the front sub frame mounting cross member.
Optionally, the material of the stiffening beam is set to HC360/590 DP.
Optionally, both ends of the reinforcement beam are respectively fixed between the front subframe mounting cross beam and the floor cross beam by welding.
The present invention also provides an automobile including the vehicle body structure, the vehicle body structure including:
the front auxiliary frame comprises a longitudinal beam and a front auxiliary frame mounting cross beam connected to the middle part of the longitudinal beam;
the floor body part is arranged on the front auxiliary frame to connect the longitudinal beam and the front auxiliary frame mounting cross beam, a floor cross beam is arranged on the floor body part and is arranged at an interval with the front auxiliary frame mounting cross beam, and the floor cross beam is connected with the longitudinal beam; and the number of the first and second groups,
and the reinforcing structure is used for connecting the front auxiliary frame mounting cross beam with the floor cross beam.
According to the technical scheme, the front auxiliary frame comprises a longitudinal beam and a front auxiliary frame mounting cross beam connected to the middle of the longitudinal beam, the longitudinal beam and the front auxiliary frame mounting cross beam are mounted on the floor body, the front auxiliary frame mounting cross beam and the floor cross beam are connected through the reinforcing structure, when the auxiliary vehicle is collided, collision force is transmitted to the floor cross beam from the longitudinal beam, is transmitted to the front auxiliary frame mounting cross beam from the longitudinal beam and is transmitted to the floor cross beam through the reinforcing structure, and therefore the transmission of the collision force is dispersed, the deformation of a vehicle body is effectively reduced, the safety of passengers is improved, and the NVH performance of the whole vehicle is improved.
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 structures shown in the drawings without creative efforts.
FIG. 1 is a schematic perspective view of a portion of one embodiment of a vehicle body structure provided by the present invention;
FIG. 2 is a schematic front view of FIG. 1;
fig. 3 is a schematic cross-sectional view of the reinforcing beam of fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
21 | Floor beam |
| 1 | Front auxiliary frame | 3 | Reinforcing structure |
| 11 | |
31 | |
| 111 | First |
311 | Reinforcing |
| 112 | Second |
312 | Reinforced |
| 12 | Front auxiliary |
313 | Flanging |
| 121 | Mounting point structure of front |
4 | |
| 2 | Floor body part |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
In recent years, along with the increasingly saturated automobile market, the competition among products is intensified, and the requirements of customers on the safety and comfort of the whole automobile are higher and higher. The front subframe serves as an important force transmission path during frontal collision and a transmission path of the entire vehicle NVH (Noise, Vibration and Harshness, Chinese is Noise, Vibration and sound Vibration roughness), and plays an important role in the self structure and the structure at the mounting point.
The installation point all arranges on preceding enclose bottom crossbeam before most motorcycle types on the sub vehicle frame, receives the restriction that preceding sub vehicle frame installation hard spot and floor were arranged, and the cross sectional dimension of crossbeam often receives the restriction, and when the size is less, will influence front collision safety and whole car NVH performance.
In view of the above, the present invention provides a vehicle body structure and a vehicle having the vehicle body structure, and the vehicle body structure is not limited herein, and any vehicle having the vehicle body structure can be understood as the vehicle body structure to be protected by the present invention. Fig. 1 to 3 show an embodiment of a vehicle body structure according to the present invention.
Referring to fig. 1 and 2, a vehicle body structure 100 includes a front subframe 1, a floor body 2, and a reinforcing structure 3, wherein the front subframe 1 includes a longitudinal beam 11 and a front subframe mounting cross beam 12 connected to a middle portion of the longitudinal beam 11; the floor body part 2 is mounted on the front subframe 1 to connect the longitudinal beam 11 and the front subframe mounting cross beam 12, the floor body part 2 is provided with a floor cross beam 21, the floor cross beam 21 and the front subframe mounting cross beam 12 are arranged at intervals, and the floor cross beam 21 is connected with the longitudinal beam 11; the reinforcement structure 3 connects the front subframe mounting cross member 12 and the floor cross member 21.
In the technical scheme of the invention, the front subframe 1 comprises a longitudinal beam 11 and a front subframe mounting cross beam 12 connected to the middle part of the longitudinal beam 11, the longitudinal beam 11 and the front subframe mounting cross beam 12 are mounted on the floor body part 2, the front subframe mounting cross beam 12 and the floor cross beam 21 are connected through the reinforcing structure 3, when the front subframe 1 is collided, the collision force is transmitted to the floor cross beam 21 from the longitudinal beam 11, and is transmitted to the front subframe mounting cross beam 12 from the longitudinal beam 11 and is transmitted to the floor cross beam 21 through the reinforcing structure 3, so that the transmission of the collision force is dispersed, the deformation of a vehicle body is effectively reduced, the safety of passengers is improved, and the NVH performance of the whole vehicle is improved.
In the present embodiment, with reference to fig. 1, the front subframe mounting cross member 12 is provided with a front subframe mounting point structure 121, the front subframe mounting point structure 121 being interposed between the reinforcing structure 3 and the longitudinal member 11; by placing the front subframe mounting point structure 121 between the reinforcing structure 3 and the longitudinal beam 11, when a frontal collision occurs, the longitudinal beam 11 re-disperses the transmitted collision force to the front subframe mounting cross beam 12 and then transmits the collision force to the floor cross beam 21 through the reinforcing structure, so that the stability of the collision force transmission is increased, and the rigidity of the subframe mounting point is improved.
Referring to fig. 2, in order to increase the speed of the impact force distribution, in the present embodiment, the longitudinal beam 11 includes a first longitudinal beam section 111 and a second longitudinal beam section 112, the reinforcing structure 3 is provided as a reinforcing beam 31, and the reinforcing beam 31 and the second longitudinal beam section 112 are arranged side by side, so that the reinforcing beam 31 and the second longitudinal beam section 112, the front subframe mounting cross beam 12, and the floor cross beam 21 form a quadrangle; when the vehicle body structure 100 is impacted, the first longitudinal beam section 111 is used for transmitting the impact force, and the impact force is dispersed to the second longitudinal beam section 112 and the reinforcing beam 31 and then transmitted to the floor crossmember 21, so that a force transmission path is increased; the front subframe mounting cross beam 12, the second longitudinal beam section 112, the reinforcement beam 31 and the floor cross beam 21 form a rectangle therebetween, so that the stability of collision force transmission is improved, and the rigidity of the front subframe mounting point structure 121 is enhanced.
Further, in the present embodiment, referring to fig. 3, in order to reinforce the structure of the reinforcing beam 31, the reinforcing beam 31 includes a reinforcing portion 311 oppositely disposed on the floor main body 2 and two reinforcing side portions 312 located on both sides of the reinforcing portion 311, and the reinforcing beam 31 is connected to the floor main body 2 by connecting both the reinforcing side portions 312 to the floor main body 2; the structure that protrudes outward is formed between the reinforcing portion 311 and the two reinforcing side portions 312, and the two reinforcing side portions 312 are both connected to the floor body portion 2 to form a closed structure with the floor body portion 2, so that the strength of the reinforcing beam 31 is improved, the collision performance is ensured, and the structure is simple and the structural stability is improved.
It should be noted that, when the reinforcing beam 31 is connected, the distance between the reinforcing portion 311 and the floor main body 2 may be adjusted or a reinforcement may be added to ensure the collision performance, due to the limitation of the cross-sectional size of the side member 11 or other systems.
Furthermore, in the present embodiment, referring to fig. 2 and 3, in order to connect the reinforcing beam 31 to the floor main body 2 more stably, a flange 313 is connected to each reinforcing side portion 312, and the flange 313 is attached to the floor main body 2; by welding the two flanges 313 to the floor body 2, the connecting area of the reinforcing beam 31 and the floor body 2 is increased, so that the stability of the connection of the reinforcing beam 31 is increased.
In order to more stably transmit the impact force, in the present embodiment, referring to fig. 1, both ends of the reinforcement beam 31 are respectively mounted to the side wall surfaces of the front subframe mounting cross member 12 and the floor cross member 21 such that the reinforcement beam 31 is flush with the front subframe mounting cross member 12 and the floor cross member 21; therefore, when the impact force is transmitted to the front sub-frame mounting cross member 12 and then transmitted to the floor cross member 21 through the reinforcement beam 31, the impact force is prevented from being dispersed at the connection between the reinforcement beam 31 and the front sub-frame mounting cross member 12 and the connection between the reinforcement beam 31 and the floor cross member 21, the structure of the connection between the reinforcement beam 31 and the front sub-frame mounting cross member 12 and the structure of the connection between the reinforcement beam 31 and the floor cross member 21 are damaged, the speed of the impact force being mounted to the floor cross member 21 from the front sub-frame mounting cross member 12 is further increased, the impact force is more stably transmitted, and the connection between the reinforcement beam 31 and the front sub-frame mounting cross member 12 and the floor cross member 21 is ensured, so that the service life is prolonged.
In the present embodiment, both ends of the reinforcement beam 31 are fixed between the front subframe mounting cross member 12 and the floor cross member 21 by welding; the reinforcement beam 31 is connected between the front sub-frame mounting cross member 12 and the floor cross member 21 by welding both ends of the reinforcement beam 31 in two directions, respectively, and is flush with the floor cross member 21 and the front sub-frame mounting cross member 12. So set up, easy and simple to handle.
In order to further distribute and transmit collision forces, in the present embodiment, referring to fig. 1 and 2, the vehicle body structure 100 further includes a torque box 4 connected to the second side rail section 112, the torque box 4 being located in an extending direction of the front sub frame mounting cross member 12; when the vehicle body structure 100 is collided, collision force is transmitted from the first longitudinal beam section 111 to the second longitudinal beam section 112, the side wall of the torque box 4 is connected to the second longitudinal beam section 112 so as to be transmitted to the torque box 4, and the torque box 4 is located in the extending direction of the front sub frame mounting cross beam 12, so that the vehicle body structure 100 is further reinforced, and stability is improved.
In the embodiment, in order to improve the strength of the reinforcing beam 31, the material of the reinforcing beam 31 is made of steel material with the specification of HC360/590DP, that is, dual-phase high-temperature cold-rolled steel, and the higher-temperature low alloy has higher strength at the same yield strength level, and the reinforcing beam 31 is made of structural members or anti-collision members, so that the strength is higher and the service life is longer.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A vehicle body structure, characterized by comprising:
the front auxiliary frame comprises a longitudinal beam and a front auxiliary frame mounting cross beam connected to the middle part of the longitudinal beam;
the floor body part is arranged on the front auxiliary frame to connect the longitudinal beam and the front auxiliary frame mounting cross beam, a floor cross beam is arranged on the floor body part and is arranged at an interval with the front auxiliary frame mounting cross beam, and the floor cross beam is connected with the longitudinal beam; and the number of the first and second groups,
and the reinforcing structure is used for connecting the front auxiliary frame mounting cross beam with the floor cross beam.
2. The vehicle body structure of claim 1 wherein said front subframe mounting cross member is provided with a front subframe mounting point structure interposed between said reinforcing structure and said side member.
3. The vehicle body structure of claim 1, wherein the side rails include a first side rail section and a second side rail section;
the reinforcing structure is a reinforcing beam, and the reinforcing beam and the second longitudinal beam section are arranged side by side, so that the reinforcing beam, the second longitudinal beam section, the front auxiliary frame mounting cross beam and the floor cross beam form a quadrangle.
4. The vehicle body structure according to claim 3, wherein the reinforcing beam includes a reinforcing portion provided opposite to the floor body portion and two reinforcing side portions on both sides of the reinforcing portion, both of the reinforcing side portions being connected to the floor body portion.
5. The vehicle body structure of claim 4, wherein a flange is attached to each of said reinforcing side portions, said flange being snugly attached to said floor body portion.
6. The vehicle body structure according to claim 5, wherein both ends of the reinforcement beam are respectively mounted to side wall surfaces of the front subframe mounting cross member and the floor cross member so that the reinforcement beam is flush with the front subframe mounting cross member and the floor cross member.
7. The vehicle body structure of claim 3, further comprising a torque box connected to said second side rail section, said torque box being located in an extending direction of said front subframe mounting cross member.
8. The vehicle body structure according to claim 2, wherein the material of the reinforcement beam is set to HC360/590 DP.
9. The vehicle body structure according to claim 2, wherein both ends of the reinforcement beam are fixed between the front sub frame mounting cross member and the floor cross member by welding, respectively.
10. An automobile, characterized by comprising a body structure according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110786939.5A CN113443016B (en) | 2021-07-12 | 2021-07-12 | Vehicle body structure and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110786939.5A CN113443016B (en) | 2021-07-12 | 2021-07-12 | Vehicle body structure and automobile |
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|---|---|
| CN113443016A true CN113443016A (en) | 2021-09-28 |
| CN113443016B CN113443016B (en) | 2022-10-11 |
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|---|---|---|---|
| CN202110786939.5A Active CN113443016B (en) | 2021-07-12 | 2021-07-12 | Vehicle body structure and automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115042864A (en) * | 2022-06-01 | 2022-09-13 | 东风柳州汽车有限公司 | Front auxiliary frame connecting structure of automobile |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113443016B (en) | 2022-10-11 |
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