CN112849270A - Vehicle body rear structure - Google Patents
Vehicle body rear structure Download PDFInfo
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- CN112849270A CN112849270A CN201911193980.0A CN201911193980A CN112849270A CN 112849270 A CN112849270 A CN 112849270A CN 201911193980 A CN201911193980 A CN 201911193980A CN 112849270 A CN112849270 A CN 112849270A
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- reinforcing plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/16—Mud-guards or wings; Wheel cover panels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
- B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
- B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
- B62D25/2027—Floors or bottom sub-units in connection with other superstructure subunits the subunits being rear structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
- B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
- B62D25/2036—Floors or bottom sub-units in connection with other superstructure subunits the subunits being side panels, sills or pillars
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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 invention discloses a rear structure of a vehicle body, which comprises a middle floor, a rear wheel cover and a rear side wall, wherein the middle floor is spliced with the rear floor; the rear wheel cover inner reinforcing plate is positioned on one side of the rear wheel cover close to the interior of the vehicle body, and the rear wheel cover bracket is connected with the bottom of the rear wheel cover inner reinforcing plate; one end of the rear wheel cover inner reinforcing plate is connected with the rear side wall inner reinforcing plate and the rear wheel cover, and the other end of the rear wheel cover inner reinforcing plate is connected with the rear wheel cover bracket and the rear wheel cover; one end of the rear wheel casing bracket is connected with the rear wheel casing inner reinforcing plate and the rear wheel casing, and the other end of the rear wheel casing bracket is connected with the rear floor; the rear floor lower cross beam is laid below the rear floor, is positioned below the rear wheel house support, and extends in the width direction of the vehicle body. According to the invention, by constructing the overlapping relation of all parts, the force transmission is more coherent and reasonable, and the stress concentration condition is reduced.
Description
Technical Field
The invention relates to the technical field of automobile structure, in particular to a rear structure of a new energy automobile body.
Background
With the rapid development of automobile technology, people have higher and higher requirements on the overall performance, safety and comfort of the automobile, and the overall performance of the automobile is seriously affected by the structure of the lap joint of the rear wheel cover, the rear floor and the upper automobile body.
At present, the technical problems of the rear wheel cover, the rear floor and the upper vehicle body of the new energy automobile in the arrangement structure are as follows:
firstly, the rear wheel cover is generally weak, and the strength is difficult to meet the requirement if no inner and outer reinforcing plates are arranged;
secondly, if the power battery of the new energy automobile deforms too much, the battery is easy to ignite, so that the rear impact performance is very important;
thirdly, the stress of the vehicle body at the positions of the rear wheel cover and the rear floor is complex, and the impact force of a shock absorber on the vehicle body, the acting force of a spring on a tower seat, the self gravity of a power battery, the impact force of a chassis on a rear suspension mounting point and the like are mainly included, so that welding spots at the positions are easy to lose effectiveness, how to conduct and disperse complicated acting force is conducted, and the arrangement of a reasonable force transmission path is always a difficult point for development of the rear vehicle body;
fourthly, as the requirement of users on riding comfort is higher and higher, the rear seats are generally supported on the floor, and the rear seats are easy to impact the buttocks when the users impact a slope road with a large impact, so that the rear seats become pain spots mainly complained in the market;
fifthly, in the opening and closing process of the rear door and the driving process, the impact force on the rear side wall lock is large, and the side wall metal plate is easy to crack;
sixth, for the SUV model, the rear body has no hat rack structure, which is not good for the bending rigidity and fatigue performance of the whole vehicle.
Generally, the rear wheel cover, the rear floor and the structure of the upper vehicle body mainly have the problems of unconnected structure, unreasonable force transmission, heavy weight, difficult comprehensive consideration of performance and the like.
In some current motorcycle types, in order to satisfy the atress of labyrinth complicacy, two crossbeams are generally arranged on the back floor, and a crossbeam is located near spare tyre pond, and in order to guarantee the intensity and the mode of spare tyre, another crossbeam is located near spring tower seat mounting point, adopts the mode of left-hand thread from top to bottom, through in the wheel casing reinforcing plate overlap joint to the wheel casing. In order to ensure the through structure of the rear shock absorber, the wheel cover inner reinforcing plate generally needs to be made into a large M-shaped structure. In addition, the wheel cover outer reinforcing plate and the spring tower seat reinforcing plate are not in a lap joint relationship, the rear door lock catch mounting position and the side wall outer reinforcing plate are not in a lap joint relationship, and the power battery mounting points are arranged on the left longitudinal beam and the right longitudinal beam and are not in a lap joint relationship with the rear floor cross beam and the spare tire. And, in order to share the platform with traditional fuel vehicle, battery rear portion and preceding floor rear portion parallel and level cause the battery module space less, and the car continuation of the journey mileage is shorter.
The rear wheel cover, the rear floor and the upper vehicle body of the vehicle have the following problems in arrangement structure:
firstly, the upper cross beam of the rear floor is arranged at the mounting point opposite to the spring tower seat, so that the arrangement space of the rear row seats and the spare tire pool is greatly limited;
secondly, in order to ensure that the force transmission at the positions of the cross beam and the shock absorber tower seat is communicated, the reinforcing plate in the wheel cover is generally required to be made into an M-shaped structure, so that the weight is increased and the space in the vehicle is extruded;
thirdly, although the spare tire lower cross beam can ensure the performance of the strength modal of the spare tire, the problems that the lap joint edge needs to be avoided and trimmed and the like can be caused, and the weight is increased;
fourthly, power battery mounting points are uniformly distributed on the left longitudinal beam and the right longitudinal beam, and are not in lap joint with the rear floor beam and the spare tire, so that the rear impact performance cannot be guaranteed;
fifthly, the mounting position of the back door lock catch is not in lap joint with the outer side wall reinforcing plate, the impact force of self locking borne by the back side wall is large in the processes of back door opening and closing and driving, no force transmission path is conducted, and the side wall metal plate is easy to crack;
sixthly, the rear seats are usually supported on the floor, and the mode easily generates impact on the buttocks when a slope road with large impact is used, so that the rear seats become pain points mainly complained in the market;
seventhly, the wheel cover outer reinforcing plate and the spring tower seat reinforcing plate are not in a lap joint relationship, force transmission paths are not connected, force borne by the spring tower seat cannot be transmitted to the upper vehicle body, and a complete closed-loop force transmission path is not formed;
eighth, the wheel casing and the rear floor are relatively complex in structure, the reinforcing plate in the M-shaped wheel casing is difficult to punch, the parts at the lap joint part often need to be avoided from each other to cut edges and the like, the process manufacturing is relatively complex, and the production beat and the production efficiency are influenced.
Disclosure of Invention
Based on the structure, the invention provides a vehicle body rear structure of a new energy automobile. According to the invention, the lap joint relation of the rear floor lower cross beam, the rear wheel cover bracket, the rear spring tower base support plate, the rear wheel cover outer reinforcing plate, the rear side wall reinforcing plate and the D column reinforcing plate is constructed, so that the force transmission is more coherent and reasonable, and the stress concentration condition is reduced.
In order to achieve the purpose, the invention provides the following technical scheme:
a rear structure of a vehicle body comprises a middle floor, a rear wheel cover, a rear side wall inner reinforcing plate, a rear wheel cover bracket and a rear floor lower cross beam, wherein the middle floor is spliced with the rear floor; one end of the rear wheel casing inner reinforcing plate is connected with the rear side wall inner reinforcing plate and the rear wheel casing, and the other end of the rear wheel casing inner reinforcing plate is connected with the rear wheel casing bracket and the rear wheel casing; one end of the rear wheel casing bracket is connected with the rear wheel casing inner reinforcing plate and the rear wheel casing, and the other end of the rear wheel casing bracket is connected with the rear floor; the rear floor lower cross beam is laid below the rear floor and located below the rear wheel house support, and extends in the width direction of the vehicle body.
As a preferable aspect of the present invention, the rear floor includes a recess having an opening toward an inside of a vehicle body for accommodating a spare tire for a vehicle, and a bottom portion of the rear wheel house support is adjacent to an upper edge of the recess of the rear floor.
As a preferred technical scheme of the invention, the automobile rear frame further comprises two rear longitudinal beams; the two rear longitudinal beams are laid below the rear floor and on the sides of the notches and are respectively and vertically connected with the end parts of the lower cross beams of the rear floor.
As a preferred technical scheme of the invention, the invention also comprises a battery mounting bracket; the battery mounting bracket comprises an inner cavity box and a connecting plate positioned on one side of the inner cavity box, one end of the connecting plate is connected to the middle floor and the rear floor, and the other end of the connecting plate is connected with the rear longitudinal beam.
As a preferred technical scheme of the invention, the invention also comprises a rear seat installation reinforcing plate; the rear seat installation reinforcing plate is positioned under the middle floor, one end of the rear seat installation reinforcing plate is connected to the middle floor, and the other end of the rear seat installation reinforcing plate is connected with the rear floor lower cross beam and the rear floor.
As a preferred technical scheme of the invention, the automobile rear wheel cover further comprises a rear wheel cover outer reinforcing plate; the rear wheel casing outer reinforcing plate is positioned on the outer side of the rear wheel casing, one end of the rear wheel casing outer reinforcing plate is connected with the rear wheel casing, and the other end of the rear wheel casing outer reinforcing plate is connected with one end, close to the rear floor lower cross beam, of the rear longitudinal beam.
As a preferred technical scheme of the invention, the automobile rear wheel cover further comprises a rear wheel cover outer plate; the rear wheel casing outer plate extends along the outer contour of the rear wheel casing, and the rear wheel casing outer reinforcing plate is connected with the rear wheel casing and the rear wheel casing outer plate.
As a preferred technical scheme of the invention, the spring tower further comprises a rear spring tower seat supporting plate and a rear spring tower seat; the rear spring tower base supporting plate is positioned at the joint of the rear longitudinal beam and the rear floor lower cross beam and is connected with one end of the rear wheel casing outer reinforcing plate; the rear spring tower seat is connected with the outer side of the rear spring tower seat supporting plate.
As a preferred technical scheme of the invention, the invention also comprises a rear side wall outer reinforcing plate; the rear side wall outer reinforcing plate is positioned above the rear wheel casing outer plate, one end of the rear side wall outer reinforcing plate is connected to the upper parts of the rear wheel casing outer plate and the rear side wall inner reinforcing plate, and the other end of the rear side wall outer reinforcing plate is connected with the lower part of the rear side wall inner reinforcing plate.
As a preferred technical scheme of the invention, the invention also comprises a D-column reinforcing plate; the D-column reinforcing plate is positioned above the rear side wall outer reinforcing plate, one end of the D-column reinforcing plate is connected to the rear side wall outer reinforcing plate, and the other end of the D-column reinforcing plate is connected with the top cover cross beam.
As a preferred technical scheme of the invention, the door lock further comprises a rear door lock reinforcing bracket; the rear door lock reinforcing bracket is positioned at the lower part of the rear side wall outer reinforcing plate, one end of the rear door lock reinforcing bracket is connected to the rear side wall outer reinforcing plate, and the other end of the rear door lock reinforcing bracket is connected with the rear wheel casing outer plate.
Compared with the prior art, the invention has the beneficial effects that:
(1) the connecting mode of the rear wheel cover bracket and the lower beam of the rear floor makes the force transmission path at the shock absorber tower seat and the spring tower seat more reasonable, reduces the upper beam of the rear floor, optimizes the arrangement space of the rear row of seats and the spare tire pool, and meets the requirement of light weight;
(2) the rear mounting bracket of the power battery is arranged on the lower cross beam and the rear longitudinal beam of the rear floor, so that the defect that the load is borne only by the front longitudinal beam of the floor can be overcome, the rear impact performance of the power battery can be met, and the endurance mileage of the battery can be effectively increased;
(3) the middle floor is lifted upwards, and the rear seat installation reinforcing plate is lapped below the lower beam of the rear floor, so that the comfort of the seat can be improved, and the strength of the installation point of the seat can be ensured;
(4) the lower beam of the rear floor can not only strengthen the local strength and mode of the spare tire pool, but also is beneficial to dispersing the load borne by the power battery, the rear row of seats and the spring tower seat;
(5) the rear spring tower seat is lapped to the rear wheel casing outer reinforcing plate through the rear spring tower seat supporting plate and is communicated with the rear side wall outer reinforcing plate and the D column reinforcing plate through the rear wheel casing, so that the force transmission paths of the spring tower seat and the shock absorber tower seat are straightened, a closed-loop coherent force transmission path is formed, the stress concentration of a local area is reduced, the whole structure is more coherent and compact, and the force transmission is more reasonable;
(6) the lap joint relation of the rear door lock reinforcing bracket and the rear side wall outer reinforcing plate enables the impact force of the rear door lock switch to be conducted out through the rear side wall outer reinforcing plate, and the risk of cracking of the rear door lock and the installation area is reduced;
(7) the inverted triangle structure of the D-column reinforcing plate can conduct loads borne by the rear spring tower base and the rear shock absorber tower base and improve the bending and torsion performance of the whole vehicle.
Drawings
Fig. 1 is a schematic internal perspective view of a vehicle body rear structure according to the present invention;
fig. 2 is a schematic perspective view of a vehicle body rear structure according to the present invention, viewed from a bottom angle;
fig. 3 is a schematic perspective view of a vehicle body rear structure according to the present invention, viewed from a bottom angle;
fig. 4 is a perspective view of a vehicle body rear structure according to the present invention, viewed from a front perspective.
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.
Referring to fig. 1-4, a rear structure of a vehicle body comprises a middle floor 8, a rear floor 13, a rear wheel cover 18 and a rear side wall, wherein the middle floor 8 is spliced with the rear floor 13, the middle floor 8 is positioned in the middle of the bottom of the vehicle body, the rear floor 13 is positioned at the rear part of the bottom of the vehicle body, the rear side wall is positioned on the side surface of the rear part of the vehicle body, and the rear wheel cover 18 is positioned below the rear side wall and above the middle floor 8 and the rear floor 13.
The rear structure of the vehicle body also comprises a rear side wall inner reinforcing plate 1, a rear wheel casing inner reinforcing plate 3, a rear wheel casing bracket 4 and a rear floor lower beam 12; the rear wheel cover inner reinforcing plate 1 is positioned on the inner side of the rear side wall, the rear wheel cover inner reinforcing plate 3 is positioned inside a vehicle body and on the inner side of a rear wheel cover 18, and the rear wheel cover bracket 4 is positioned on the lower side of the rear wheel cover inner reinforcing plate 3 and welded with the bottom of the rear wheel cover inner reinforcing plate 3; one end of the rear wheel casing inner reinforcing plate 3 is welded with the rear side wall inner reinforcing plate 1 and the rear wheel casing 18, and the other end is welded with the rear wheel casing bracket 4 and the rear wheel casing 18; one end of the rear wheel casing bracket 4 is welded with the rear wheel casing inner reinforcing plate 3 and the rear wheel casing 18, and the other end is welded with the rear floor 13; the rear underfloor cross member 12 is laid under the rear floor 13, is located under the rear wheel house bracket 4, and extends in the width direction of the vehicle body.
As a preferred embodiment of the present invention, the rear floor 13 includes a recess 14 opened toward the inside of the vehicle body for receiving a spare tire for a vehicle. The bottom of the rear wheel house bracket 4 is close to the upper edge of the recess 14 of the rear floor 13.
As a preferred embodiment of the present invention, the vehicle body rear structure further includes a rear side member 16; the rear longitudinal beam 16 is laid below the rear floor 13 and on the side of the recess, and is vertically connected to the rear floor lower cross beam 12. The rear side members 16 are two and are disposed around the recess 14 together with the rear underfloor cross member 12. The rear underfloor cross beam 12 is connected and penetrated with the notch 14 and the rear wheel cover bracket 4, so that the bending and torsion performance of the spare tire pool mode and the whole vehicle is improved.
As a preferred embodiment of the present invention, the vehicle body rear structure further includes a rear wheel house outer reinforcement plate 9; the rear wheel casing outer reinforcing plate 9 is positioned outside the rear wheel casing 18, one end of the rear wheel casing outer reinforcing plate is welded with the rear wheel casing 18, and the other end of the rear wheel casing outer reinforcing plate is welded with one end of the rear longitudinal beam 16 close to the rear floor lower cross beam 12.
As a preferred embodiment of the present invention, the vehicle body rear structure further includes a rear wheel house outer panel 7; the rear wheel casing outer plate 7 extends along the outer contour of the rear wheel casing 18, and the rear wheel casing outer reinforcing plate 9 is welded with the rear wheel casing 18 and the rear wheel casing outer plate 7.
As a preferred embodiment of the present invention, the vehicle body rear structure further includes a rear spring tower support plate 10 and a rear spring tower 11; the rear spring tower base support plate 10 is positioned at the joint of the rear longitudinal beam 16 and the rear floor lower cross beam 12 and is welded with one end of the rear wheel casing outer reinforcing plate 9; the rear spring tower seat 11 is welded to the outer side of the rear spring tower seat support plate 10.
As a preferred embodiment of the present invention, the vehicle body rear structure further includes a quarter outer reinforcement panel 5; the rear side wall outer reinforcing plate 5 is positioned above the rear wheel casing outer plate 7, one end of the rear side wall outer reinforcing plate is welded to the upper parts of the rear wheel casing outer plate 7 and the rear side wall inner reinforcing plate 1, and the other end of the rear side wall outer reinforcing plate is welded to the lower part of the rear side wall inner reinforcing plate 1.
As a preferred embodiment of the present invention, the vehicle body rear structure further includes a D-pillar reinforcement panel 2; the D-column reinforcing plate 2 is positioned above the rear side wall outer reinforcing plate 5, one end of the D-column reinforcing plate is welded to the rear side wall outer reinforcing plate 5, and the other end of the D-column reinforcing plate is welded with the top cover beam. The rear spring tower seat supporting plate 10 and the rear wheel casing outer reinforcing plate 9 are connected and penetrated, so that a closed loop is formed among the rear spring tower seat supporting plate 10, the rear wheel casing outer reinforcing plate 9, the rear side wall outer reinforcing plate 5 and the D-pillar reinforcing plate 2, and a force transmission path is connected and penetrated. The D-pillar reinforcing plate 2 is preferably of an inverted triangle structure so as to improve the bending and torsion performance of the whole vehicle.
As a preferred embodiment of the present invention, the vehicle body rear structure further includes a battery mounting bracket 17; the battery mounting bracket 17 comprises an inner cavity box and a connecting plate positioned on one side of the inner cavity box, one end of the connecting plate is welded to the middle floor 8 and the rear floor 13, and the other end of the connecting plate is welded to the rear longitudinal beam 16. The battery mounting bracket 17 is overlapped with the middle floor 8 and the rear floor 13 so as to satisfy the rear impact performance of the power battery.
As a preferred embodiment of the present invention, the vehicle body rear structure further includes a rear door lock reinforcing bracket 6; the rear door lock reinforcing bracket 6 is positioned at the lower part of the rear side wall outer reinforcing plate 5, one end of the rear door lock reinforcing bracket is welded on the rear side wall outer reinforcing plate 5, and the other end of the rear door lock reinforcing bracket is welded with the rear wheel casing outer plate 7. The rear door lock reinforcing bracket 6 is in lap joint with the rear side wall outer reinforcing plate 5 so as to meet the impact strength of the rear door switch.
As a preferred embodiment of the present invention, the vehicle body rear structure further includes a rear seat attachment reinforcement plate 15; the rear seat installation reinforcing plate 15 is located right under the middle floor 8, and one end thereof is welded to the middle floor 8, and the other end thereof is welded to the rear floor lower cross member 12 and the rear floor 13. The rear seat attachment reinforcing plate 15 overlaps the rear floor 13 and the rear floor lower cross member 12 to improve the rear seat attachment strength.
The rear wheel house support 4 is welded to the rear floor lower cross member 12 through the rear floor 13, and the rear floor upper cross member is eliminated, thereby optimizing the arrangement space of the rear seat and the rear floor. The power battery is lapped on the rear longitudinal beam 16 and the rear underfloor cross beam 12 through the power battery mounting bracket 17, and further, the rear longitudinal beam 16 and the rear underfloor cross beam 12 bear rear impact force. The rear floor lower cross beam 12 can not only strengthen the local mode and strength of the spare tire pool, but also transfer the load borne by the rear spring tower seat. The load borne by the rear spring tower seat 11 is transmitted to the rear wheel casing outer reinforcing plate 9 through the rear spring tower seat supporting plate 10, and then is dispersed through the rear side wall outer reinforcing plate 5 and the D column reinforcing plate 2. On the contrary, the force of the shock absorber tower seat applied to the rear wheel cover outer reinforcing plate 9 can also be transmitted out through the rear spring tower seat supporting plate 10 and the rear floor lower cross beam 12 to form a closed loop and connect a penetrating force transmission path, so that the stress concentration of a local area is reduced, the whole structure is more coherent and compact, and the force transmission is more reasonable. The rear door switch impact force is transmitted to the rear side wall outer reinforcing plate 5 through the rear door lock reinforcing bracket 6, and the risk of cracking of the rear door lock catch mounting area is reduced.
The reinforcing structure on the outer side of the rear wheel cover extends upwards from the rear spring tower seat 11 to the D-column reinforcing plate 2 through the rear spring tower seat supporting plate 10, the rear wheel cover outer reinforcing plate 9 and the rear side wall outer reinforcing plate 5, the reinforcing structure on the inner side of the rear wheel cover extends upwards from the rear floor lower cross beam 12 to the D-column reinforcing plate 2 through the rear floor 13, the rear wheel cover bracket 4, the rear wheel cover inner reinforcing plate 3 and the rear side wall inner reinforcing plate 1 to form two continuous force transmission paths, and a relatively stable inverted V-shaped structure is formed between the two continuous force transmission paths, so that the vehicle body rear structure can meet the structural strength requirement under the condition of canceling the rear floor upper cross beam, and the arrangement space of a rear row seat and a spare tire pool is optimized.
According to the rear wheel casing and rear floor structure, the lower cross beam of the rear floor, the rear wheel casing bracket, the rear spring tower base support plate, the rear wheel casing outer reinforcing plate, the rear side wall reinforcing plate and the D column reinforcing plate are in a lap joint relationship, so that the force transmission is more coherent and reasonable, and the stress concentration condition is reduced.
Based on the above, the invention has the advantages that:
(1) the connecting mode of the rear wheel cover bracket and the lower beam of the rear floor makes the force transmission path at the shock absorber tower seat and the spring tower seat more reasonable, reduces the upper beam of the rear floor, optimizes the arrangement space of the rear row of seats and the spare tire pool, and meets the requirement of light weight;
(2) the rear mounting bracket of the power battery is arranged on the lower cross beam and the rear longitudinal beam of the rear floor, so that the defect that the load is borne only by the front longitudinal beam of the floor can be overcome, the rear impact performance of the power battery can be met, and the endurance mileage of the battery can be effectively increased;
(3) the middle floor is lifted upwards, and the rear seat installation reinforcing plate is lapped below the lower cross beam of the rear floor, so that the comfort of the seat can be improved, and the strength of the seat installation point can be ensured;
(4) the lower beam of the rear floor can not only strengthen the local strength and mode of the spare tire pool, but also is beneficial to dispersing the load borne by the power battery, the rear row of seats and the spring tower seat;
(5) the rear spring tower seat is lapped to the rear wheel casing outer reinforcing plate through the rear spring tower seat supporting plate and is communicated with the rear side wall outer reinforcing plate and the D column reinforcing plate through the rear wheel casing, so that the force transmission paths of the spring tower seat and the shock absorber tower seat are straightened, a closed-loop coherent force transmission path is formed, the stress concentration of a local area is reduced, the whole structure is more coherent and compact, and the force transmission is more reasonable;
(6) the lap joint relation of the rear door lock reinforcing bracket and the rear side wall outer reinforcing plate enables the impact force of the rear door lock switch to be conducted out through the rear side wall outer reinforcing plate, and the risk of cracking of the rear door lock and the installation area is reduced;
(7) the inverted triangle structure of the D-column reinforcing plate can conduct loads borne by the rear spring tower base and the rear shock absorber tower base and improve the bending and torsion performance of the whole vehicle.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A rear structure of a vehicle body comprises a middle floor (8), a rear floor (13), a rear wheel cover (18) and a rear side wall, wherein the middle floor (8) is spliced with the rear floor (13), and the rear wheel cover (18) is positioned below the rear side wall and above the middle floor (8) and the rear floor (13), and is characterized by further comprising a rear side wall inner reinforcing plate (1), a rear wheel cover inner reinforcing plate (3), a rear wheel cover bracket (4) and a rear floor lower cross beam (12); the rear wheel cover inner reinforcing plate (1) is positioned on the inner side of the rear side wall, the rear wheel cover inner reinforcing plate (3) is positioned on one side, close to the interior of a vehicle body, of the rear wheel cover (18), and the rear wheel cover bracket (4) is connected with the bottom of the rear wheel cover inner reinforcing plate (3); one end of the rear wheel cover inner reinforcing plate (3) is connected with the rear side wall inner reinforcing plate (1) and the rear wheel cover (18), and the other end of the rear wheel cover inner reinforcing plate is connected with the rear wheel cover bracket (4) and the rear wheel cover (18); one end of the rear wheel casing bracket (4) is connected with the rear wheel casing inner reinforcing plate (3) and the rear wheel casing (18), and the other end is connected with the rear floor (13); the rear floor lower cross beam (12) is laid below the rear floor (13) and located below the rear wheel house support (4), and the rear floor lower cross beam (12) extends in the width direction of the vehicle body.
2. A vehicle body rear structure according to claim 1, wherein said rear floor (13) includes a recess (14) open to the interior of the vehicle body for accommodating a spare tire for a vehicle, and the bottom of said rear wheel house support (4) is adjacent to the upper edge of said recess (14) of said rear floor (13).
3. The vehicle body rear structure according to claim 2, further comprising two rear side members (16); the two rear longitudinal beams (16) are laid below the rear floor (13) and on the sides of the notches (14), and are respectively vertically connected with the end parts of the rear floor lower cross beams (12).
4. A vehicle body rear structure according to claim 3, further comprising a battery mounting bracket (17), said battery mounting bracket (17) comprising an interior box and a connecting plate on one side of said interior box, said connecting plate being connected at one end to said middle floor (8) and said rear floor (13) and at the other end to said rear side member (16).
5. A vehicle body rear structure according to claim 3, further comprising a rear seat installation reinforcing plate (15), said rear seat installation reinforcing plate (15) being located right under said middle floor (8), one end of which is connected to said middle floor (8), and the other end of which is connected to said rear floor lower cross member (12) and said rear floor (13).
6. A vehicle body rear structure according to claim 3, further comprising a rear wheel house outer reinforcement plate (9); the rear wheel casing outer reinforcing plate (9) is located on the outer side of the rear wheel casing (18), one end of the rear wheel casing outer reinforcing plate is connected with the rear wheel casing (18), and the other end of the rear wheel casing outer reinforcing plate is connected with one end, close to the rear floor lower cross beam (12), of the rear longitudinal beam (16).
7. The vehicle body rear structure according to claim 6, further comprising a rear wheel house outer panel (7); the rear wheel casing outer plate (7) extends along the outer contour of the rear wheel casing (18), and the rear wheel casing outer reinforcing plate (9) is connected with the rear wheel casing (18) and the rear wheel casing outer plate (7).
8. The vehicle body rear structure according to claim 6, further comprising a rear spring tower support plate (10) and a rear spring tower (11); the rear spring tower base supporting plate (10) is positioned at the joint of the rear longitudinal beam (16) and the rear floor lower cross beam (12) and is connected with one end of the rear wheel casing outer reinforcing plate (9); the rear spring tower seat (11) is connected with the outer side of the rear spring tower seat supporting plate (10).
9. The vehicle body rear structure according to claim 7, further comprising a quarter outer reinforcement panel (5) and a D-pillar reinforcement panel (2); the rear side wall outer reinforcing plate (5) is positioned above the rear wheel casing outer plate (7), one end of the rear side wall outer reinforcing plate is connected to the upper parts of the rear wheel casing outer plate (7) and the rear side wall inner reinforcing plate (1), and the other end of the rear side wall outer reinforcing plate is connected with the lower part of the rear side wall inner reinforcing plate (1); the D-column reinforcing plate (2) is positioned above the rear side wall outer reinforcing plate (5), one end of the D-column reinforcing plate is connected to the rear side wall outer reinforcing plate (5), and the other end of the D-column reinforcing plate is connected with the top cover beam.
10. The vehicle body rear structure according to claim 9, further comprising a rear door lock reinforcing bracket (6), wherein the rear door lock reinforcing bracket (6) is located below the quarter outer reinforcement plate (5), and has one end connected to the quarter outer reinforcement plate (5) and the other end connected to the rear wheel house outer plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911193980.0A CN112849270A (en) | 2019-11-28 | 2019-11-28 | Vehicle body rear structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115230823A (en) * | 2022-07-12 | 2022-10-25 | 岚图汽车科技有限公司 | Automobile rear wheel cover assembly and automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115230823A (en) * | 2022-07-12 | 2022-10-25 | 岚图汽车科技有限公司 | Automobile rear wheel cover assembly and automobile |
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