CN115214785B - Automobile body rear structure and car - Google Patents
Automobile body rear structure and car Download PDFInfo
- Publication number
- CN115214785B CN115214785B CN202111503013.7A CN202111503013A CN115214785B CN 115214785 B CN115214785 B CN 115214785B CN 202111503013 A CN202111503013 A CN 202111503013A CN 115214785 B CN115214785 B CN 115214785B
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- column
- reinforcing plate
- wheel cover
- vehicle body
- rear wheel
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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
- 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
- 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
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- 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
- B62D21/09—Means for mounting load bearing surfaces
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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
- B62D25/04—Door pillars ; windshield pillars
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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
- B62D25/163—Mounting devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D27/00—Connections between superstructure or understructure sub-units
- B62D27/02—Connections between superstructure or understructure sub-units rigid
- B62D27/023—Assembly of structural joints
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- 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
Abstract
The invention provides a vehicle body rear structure and an automobile, and relates to the field of vehicle body structures. The vehicle body rear structure comprises a C/D column connecting plate, a rear side wall reinforcing plate and a rear wheel cover reinforcing plate, wherein the C/D column connecting plate and the rear side wall reinforcing plate are of an integrated structure; the C/D column connecting plate is provided with a C column upper joint and a D column upper joint in a bifurcation way, and the upper end of the rear side wall reinforcing plate is provided with a C column lower joint and a D column lower joint in a bifurcation way; the upper joint of the C column is fixedly connected with the lower joint of the C column, and the upper joint of the D column is fixedly connected with the lower joint of the D column to form a Y-shaped reinforcing structure together; the lower end of the rear side wall reinforcing plate is fixedly connected with the rear wheel cover reinforcing plate, a rear auxiliary frame mounting bracket and a rear suspension spring mounting bracket are arranged at the lower part of the rear wheel cover reinforcing plate at intervals, and the Y-shaped reinforcing structure is connected with the rear wheel cover reinforcing plate to form an X-shaped force transmission structure. The parts are less in number, easy to crack, the upper part and the lower part of the automobile body are communicated to form a force transmission path, the integrity of the structure of the rear part of the automobile body is better, and the bending and torsion resistance and the durability reliability are improved.
Description
Technical Field
The invention relates to the technical field of vehicle body structures, in particular to a vehicle body rear structure and an automobile.
Background
The main body structure of the automobile has obvious influence on the whole automobile performance, particularly the stress condition of the rear structure of the automobile is complex, the automobile bears the impact force from a chassis, a shock absorber, a spring and the like, and the structure is directly related to the rigidity strength, the torsion mode, the durability and the riding comfort of the automobile.
In general, a vehicle body rear structure mainly includes a rear side body, a rear floor cross member and a roof rear cross member, and it is disclosed in the prior art that the vehicle body side body structure includes a C pillar inner panel, a wheel cover outer panel fixed to a lower edge of the C pillar inner panel, and C pillar reinforcing panels respectively fixed to the C pillar inner panel and the wheel cover outer panel, an upper end of the C pillar reinforcing panel is connected to a joint of the vehicle body side body structure, a lower end of the C pillar reinforcing panel is connected to the wheel cover outer panel, and the C pillar inner panel, the wheel cover outer panel, and the C pillar reinforcing panels enclose a cavity structure together. Through fixed C post reinforcing plate between C post inner panel and wheel casing planking to be provided with on the automobile body side wall structure and extend to the cavity structure of wheel casing planking from this joint, improve the whole rigidity and the intensity of CD post, increased the power transmission route of automobile body skeleton.
Because the upper part of the rear side wall is provided with the triangular window, the reinforced parts related to the C/D column are more, and the excessive welding joints are easy to crack; moreover, the integrity of the rear structure of the vehicle body is low, a complete force transmission path cannot be formed, and the bending and torsion resistance and the durability reliability of the whole vehicle are poor.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a vehicle body rear structure and an automobile, so as to solve the problems that the number of reinforcing parts related to a C/D column is large, and the excessive weld joints are easy to crack; moreover, the integrity of the rear structure of the vehicle body is low, a complete force transmission path cannot be formed, and the bending and torsion rigidity and the durability reliability of the whole vehicle are poor.
The technical scheme of the vehicle body rear part structure is as follows:
the vehicle body rear structure comprises a C/D column connecting plate, a rear side wall reinforcing plate and a rear wheel cover reinforcing plate which are sequentially arranged from top to bottom, wherein the C/D column connecting plate and the rear side wall reinforcing plate are of an integrated structure;
the C/D column connecting plate is provided with a C column upper joint and a D column upper joint, and the upper end of the rear side wall reinforcing plate is provided with a C column lower joint and a D column lower joint;
the C column upper joint is fixedly connected with the C column lower joint, and the D column upper joint is fixedly connected with the D column lower joint to form a Y-shaped reinforcing structure;
the lower end of the rear side wall reinforcing plate is fixedly connected with the rear wheel cover reinforcing plate, a rear auxiliary frame mounting bracket and a rear suspension spring mounting bracket are arranged at the lower part of the rear wheel cover reinforcing plate at intervals, and the Y-shaped reinforcing structure is connected with the rear wheel cover reinforcing plate to form an X-shaped force transmission structure;
the rear side wall reinforcing plate comprises a main body part, the outline size of the upper part of the main body part is gradually reduced from top to bottom, the lower C column joint is integrally connected with the front end of the main body part, and the lower D column joint is integrally connected with the rear end of the main body part.
Further, still include D post reinforcing plate, D post reinforcing plate with the butt joint of D post upper joint has formed the D post, D post lower joint is parallel to the extending direction setting of D post, just D post lower joint is fixed to be located the D post reinforcing plate with the downside of D post upper joint butt joint position.
Further, the vehicle further comprises a top beam assembly and a bottom beam assembly, wherein two C/D column connecting plates, a rear side wall reinforcing plate and a rear wheel cover reinforcing plate are symmetrically arranged on the longitudinal central line of the vehicle body respectively;
the top beam component is fixedly connected to the upper ends of the two C/D column connecting plates, and the bottom beam component is fixedly connected to the lower parts of the two rear wheel cover reinforcing plates to form an outer ring force transmission structure of the vehicle body.
Further, the top beam assembly comprises a top cover auxiliary beam and a top cover rear beam which are arranged at intervals in parallel, the top cover auxiliary beam is connected to the upper end of the C/D column connecting plate corresponding to the C column, and the top cover rear beam is connected to the upper side of the C/D column connecting plate corresponding to the D column.
Further, the bottom beam assembly comprises a rear floor lower beam and a spare tire supporting beam which are arranged at intervals in parallel, the lower part of the rear wheel cover reinforcing plate is fixedly connected with the rear floor lower beam and the spare tire supporting beam respectively, the rear suspension spring mounting bracket is arranged on the outer side of the spare tire supporting beam, and the rear auxiliary frame mounting bracket is arranged on the outer side of the rear floor lower beam.
Further, a rear wheel cover support and a rear wheel cover connecting plate are further arranged on the inner side of the rear wheel cover reinforcing plate, the upper portion of the rear wheel cover support is fixedly connected with the rear side wall reinforcing plate, and the lower portion of the rear wheel cover support is fixedly connected with the rear wheel cover connecting plate.
Further, the bottom beam assembly further comprises a rear floor upper beam, the rear floor upper beam is fixedly connected between the rear wheel cover connecting plates on two sides, and a vehicle body inner ring force transmission structure is formed between the rear floor upper beam and the rear wheel cover connecting plates, the rear wheel cover support and the Y-shaped reinforcing structure.
Further, the rear floor lower beam, the spare tire supporting beam and the rear floor upper beam are channel beam bodies, the rear floor lower beam and the spare tire supporting beam are upwards arranged in a notch, and the rear floor upper beam is downwards buckled with the rear floor lower beam and between the spare tire supporting beams in a notch.
The technical scheme of the automobile is as follows:
the automobile comprises an automobile body rear structure, wherein the automobile body rear structure comprises a C/D column connecting plate, a rear side wall reinforcing plate and a rear wheel cover reinforcing plate which are sequentially arranged from top to bottom, and the C/D column connecting plate and the rear side wall reinforcing plate are of an integrated structure;
the C/D column connecting plate is provided with a C column upper joint and a D column upper joint, and the upper end of the rear side wall reinforcing plate is provided with a C column lower joint and a D column lower joint;
the C column upper joint is fixedly connected with the C column lower joint, and the D column upper joint is fixedly connected with the D column lower joint to form a Y-shaped reinforcing structure;
the lower end of the rear side wall reinforcing plate is fixedly connected with the rear wheel cover reinforcing plate, a rear auxiliary frame mounting bracket and a rear suspension spring mounting bracket are arranged at the lower part of the rear wheel cover reinforcing plate at intervals, and the Y-shaped reinforcing structure is connected with the rear wheel cover reinforcing plate to form an X-shaped force transmission structure;
the rear side wall reinforcing plate comprises a main body part, the outline size of the upper part of the main body part is gradually reduced from top to bottom, the lower C column joint is integrally connected with the front end of the main body part, and the lower D column joint is integrally connected with the rear end of the main body part.
Further, still include D post reinforcing plate, D post reinforcing plate with the butt joint of D post upper joint has formed the D post, D post lower joint is parallel to the extending direction setting of D post, just D post lower joint is fixed to be located the D post reinforcing plate with the downside of D post upper joint butt joint position.
Further, the vehicle further comprises a top beam assembly and a bottom beam assembly, wherein two C/D column connecting plates, a rear side wall reinforcing plate and a rear wheel cover reinforcing plate are symmetrically arranged on the longitudinal central line of the vehicle body respectively;
the top beam component is fixedly connected to the upper ends of the two C/D column connecting plates, and the bottom beam component is fixedly connected to the lower parts of the two rear wheel cover reinforcing plates to form an outer ring force transmission structure of the vehicle body.
Further, the top beam assembly comprises a top cover auxiliary beam and a top cover rear beam which are arranged at intervals in parallel, the top cover auxiliary beam is connected to the upper end of the C/D column connecting plate corresponding to the C column, and the top cover rear beam is connected to the upper side of the C/D column connecting plate corresponding to the D column.
Further, the bottom beam assembly comprises a rear floor lower beam and a spare tire supporting beam which are arranged at intervals in parallel, the lower part of the rear wheel cover reinforcing plate is fixedly connected with the rear floor lower beam and the spare tire supporting beam respectively, the rear suspension spring mounting bracket is arranged on the outer side of the spare tire supporting beam, and the rear auxiliary frame mounting bracket is arranged on the outer side of the rear floor lower beam.
Further, a rear wheel cover support and a rear wheel cover connecting plate are further arranged on the inner side of the rear wheel cover reinforcing plate, the upper portion of the rear wheel cover support is fixedly connected with the rear side wall reinforcing plate, and the lower portion of the rear wheel cover support is fixedly connected with the rear wheel cover connecting plate.
Further, the bottom beam assembly further comprises a rear floor upper beam, the rear floor upper beam is fixedly connected between the rear wheel cover connecting plates on two sides, and a vehicle body inner ring force transmission structure is formed between the rear floor upper beam and the rear wheel cover connecting plates, the rear wheel cover support and the Y-shaped reinforcing structure.
Further, the rear floor lower beam, the spare tire supporting beam and the rear floor upper beam are channel beam bodies, the rear floor lower beam and the spare tire supporting beam are upwards arranged in a notch, and the rear floor upper beam is downwards buckled with the rear floor lower beam and between the spare tire supporting beams in a notch.
The beneficial effects are that: the structure of the rear part of the automobile body adopts a structural form that a C/D column connecting plate, a rear side wall reinforcing plate and a rear wheel cover reinforcing plate are sequentially arranged from top to bottom, the C/D column connecting plate and the rear side wall reinforcing plate are of an integrated structure, a C column is formed by fixedly connecting a C column upper joint of the C/D column connecting plate and a C column lower joint of the rear side wall reinforcing plate, a D column upper joint of the C/D column connecting plate and a D column lower joint of the rear side wall reinforcing plate are fixedly connected to form a part D column, a rear triangular window space is formed between the C column and a part D column, a Y-shaped reinforcing structure is jointly formed with the side wall reinforcing plate, the number of parts is reduced, and the problem of excessive seams and easy cracking is avoided.
The lower extreme and the rear wheel cover reinforcing plate fixed connection of Y type additional strengthening to the lower part interval of rear wheel cover reinforcing plate is equipped with back sub vehicle frame installing support and rear overhang spring installing support, has further constituted X type and has passed the power transmission route between upper and lower part of automobile body, ensures that the impact force of chassis and suspension can transmit the dispersion from top to bottom, and the integrality of automobile body rear portion structure is better, has improved whole car anti-bending rigidity and durable reliability.
Drawings
Fig. 1 is a perspective view of a vehicle body rear structure in an embodiment of the vehicle body rear structure of the invention;
fig. 2 is a perspective view of a vehicle body rear structure (from an oblique upward view of the vehicle bottom) in an embodiment of the vehicle body rear structure of the invention;
fig. 3 is an exploded schematic view of a Y-shaped reinforcing structure in an embodiment of the vehicle body rear structure of the present invention.
Fig. 4 is a schematic front view of an X-type force transmitting structure in an embodiment of the vehicle body rear structure of the present invention;
FIG. 5 is a perspective view of a body outer ring force transmitting structure in an embodiment of the body rear structure of the present invention;
FIG. 6 is a perspective view of a body inner ring force transmitting structure in an embodiment of the body rear structure of the present invention;
fig. 7 is a perspective view of a lower half of the vehicle body rear structure in the embodiment of the vehicle body rear structure of the invention;
in the figure: 1-C/D column connecting plates, 11-C column upper joints, 12-D column upper joints, 2-rear side wall reinforcing plates, 21-C column lower joints and 22-D column lower joints;
3-rear wheel cover reinforcing plates, 30-rear wheel covers, 31-rear auxiliary frame mounting brackets, 32-rear suspension spring mounting brackets, 33-rear wheel cover brackets and 34-rear wheel cover connecting plates;
4-D post reinforcing plate, 5-top beam assembly, 51-top cover auxiliary beam, 52-top cover rear beam, 6-bottom beam assembly, 60-rear floor upper beam, 61-rear floor lower beam, 62-spare tire supporting beam, 7-middle floor and 8-rear floor.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
As shown in fig. 1 to 4, the vehicle body rear structure of the present invention includes a C/D pillar connecting plate 1, a rear side wall reinforcing plate 2, and a rear wheel cover reinforcing plate 3, which are sequentially disposed from top to bottom, the C/D pillar connecting plate 1 and the rear side wall reinforcing plate 2 being an integral structure; the C/D column connecting plate 1 is provided with a C column upper joint 11 and a D column upper joint 12 in a bifurcation way, and the upper end of the rear side wall reinforcing plate 2 is provided with a C column lower joint 21 and a D column lower joint 22 in a bifurcation way; the C column upper joint 11 is fixedly connected with the C column lower joint 21, and the D column upper joint 12 is fixedly connected with the D column lower joint 22 to form a Y-shaped reinforcing structure together; the lower extreme and the back wheel casing reinforcing plate 3 fixed connection of back side wall reinforcing plate 2, the lower part interval of back wheel casing reinforcing plate 3 is equipped with back sub vehicle frame installing support 31 and rear suspension spring installing support 32, and Y type reinforced structure constitutes X type force transmission structure with back wheel casing reinforcing plate 3 connection.
The structure of the rear part of the automobile body adopts a structural form that a C/D column connecting plate 1, a rear side wall reinforcing plate 2 and a rear wheel cover reinforcing plate 3 are sequentially arranged from top to bottom, the C/D column connecting plate 1 and the rear side wall reinforcing plate 2 are of an integrated structure, a C column is formed by fixedly connecting a C column upper joint 11 of the C/D column connecting plate 1 and a C column lower joint 21 of the rear side wall reinforcing plate 2, a D column upper joint 12 of the C/D column connecting plate 1 and a D column lower joint 22 of the rear side wall reinforcing plate 2 are fixedly connected to form a part D column, a rear triangular window space is formed between the C column and the part D column, and a Y-shaped reinforcing structure is jointly formed with the side wall reinforcing plate 2, so that the number of parts is reduced, and the problem of excessive and easy cracking of joints is avoided.
The lower extreme and the back wheel casing reinforcing plate 3 fixed connection of Y reinforced structure to the lower part interval of back wheel casing reinforcing plate 3 is equipped with back sub vehicle frame installing support 31 and rear overhang spring installing support 32, has further constituted X type power transmission structure, switches on between the upper and lower part of automobile body and forms the power transmission route, ensures that the impact force of chassis and suspension can transmit the dispersion from top to bottom, and automobile body rear structure's wholeness is better, has improved whole car anti-bending rigidity and durable reliability.
In this embodiment, the side gusset 2 includes a main body portion, the upper profile of which is inverted trapezoidal, and as shown in fig. 3, the C pillar lower 21 is integrally connected to the front end apex angle of the main body portion, and the D pillar lower 11 is integrally connected to the rear end apex angle of the main body portion. And, the automobile body rear portion structure still includes D post reinforcing plate 4, and D post reinforcing plate 4 has formed the D post with the butt joint of the D post upper joint 12 of C/D post connecting plate 1, and D post lower joint 22 is parallel to the extending direction setting of D post, and the fixed downside of locating the butt joint position of D post of the D post lower joint 22 of rear side wall reinforcing plate 2.
The C column is formed by butt welding of the C column lower connector 21 and the C column upper connector 11 of the C/D column connecting plate 1, and the D column is formed by butt welding of the D column reinforcing plate 4 and the D column upper connector 12 of the C/D column connecting plate 1, so that the rear triangular window frame is constructed. And, through the overlap welding of the joint department of D post lower joint 22 and D post of rear side wall reinforcing plate 2, realized improving the structural strength rigidity of D post to and switch on the purpose of power transmission route. The C column and the D column mainly comprise a C/D column connecting plate 1 and a rear side wall reinforcing plate 2, so that the number of parts is small, welding butt joint positions are reduced, and the integrity of the rear structure of the vehicle body is improved.
The vehicle body rear structure further comprises a top beam assembly 5 and a bottom beam assembly 6, wherein two C/D column connecting plates 1, a rear side wall reinforcing plate 2 and a rear wheel cover reinforcing plate 3 are symmetrically arranged on the longitudinal central line of the vehicle body respectively; the top beam assembly 5 is fixedly connected to the upper ends of the two C/D column connecting plates 1, and the bottom beam assembly 6 is fixedly connected to the lower parts of the two rear wheel cover reinforcing plates 3 to form an outer ring force transmission structure of the vehicle body. Through the structural design of the C/D column connecting plate 1, the rear side wall reinforcing plate 2 and the rear wheel cover reinforcing plate 3, X-shaped force transmission structures are respectively formed on two sides of a vehicle body, on the basis, the C/D column connecting plate 1 on two sides is connected by combining the top beam assembly 5, and the rear wheel cover reinforcing plate 3 on two sides is connected by combining the bottom beam assembly 6, so that the conduction of a transverse force transmission path between the left X-shaped force transmission structure and the right X-shaped force transmission structure is realized.
Specifically, the top beam assembly 5 includes a top auxiliary beam 51 and a top rear beam 52 arranged in parallel and spaced apart, and as shown in fig. 5, the top auxiliary beam 51 is connected to the upper end of the C/D column connecting plate 1 corresponding to the C column, and the top rear beam 52 is connected to the upper side of the C/D column connecting plate 1 corresponding to the D column. The top beam assembly 5 is designed into the top cover auxiliary beam 51 and the top cover rear beam 52, so that the strength and rigidity of the roof structure are improved, and parallel transverse force transmission paths are respectively formed between the C column and the top cover auxiliary beam 51 and between the D column and the top cover rear beam 52, so that the continuity of the force transmission structure of the upper half part of the vehicle body is better, the impact force from the lower part of the vehicle body can be effectively dispersed, and the overall durability and reliability are improved.
Correspondingly, the bottom beam assembly 6 comprises a rear underfloor beam 61 and a spare tire supporting beam 62 which are arranged in parallel at intervals, the lower part of the rear wheel cover reinforcing plate 3 is fixedly connected with the rear underfloor beam 61 and the spare tire supporting beam 62 respectively, the rear auxiliary frame mounting bracket 31 is arranged on the outer side of the rear underfloor beam 61, and the rear suspension spring mounting bracket 32 is arranged on the outer side of the spare tire supporting beam 62. Wherein, the middle floor 7 is arranged at the front side of the rear underfloor beam 61, the rear floor 8 is arranged at the rear side of the rear underfloor beam 61, parallel transverse force transmission paths are respectively formed between the rear wheel cover reinforcing plates 3 at two sides and the rear underfloor beam 61 and between the rear wheel cover reinforcing plates 3 at two sides and the spare tire supporting beam 62, so that the continuity of the force transmission structure of the lower half part of the vehicle body is better, the force transmission channel of the lower part of the vehicle body is increased, and the NVH performance of the whole vehicle can be effectively improved.
In this embodiment, the rear wheel cover bracket 33 and the rear wheel cover connecting plate 34 are further provided on the inner side of the rear wheel cover reinforcing plate 3, and as shown in fig. 6 and 7, the upper portion of the rear wheel cover bracket 33 is fixedly connected to the rear side wall reinforcing plate 2, the lower portion of the rear wheel cover bracket 33 is fixedly connected to the rear wheel cover connecting plate 34, and the rear wheel cover 30 is fixedly connected between the rear wheel cover bracket 33 and the rear wheel cover reinforcing plate 3. The bottom beam assembly 6 further comprises a rear floor upper beam 60, the rear floor upper beam 60 is fixedly connected between the rear wheel cover connecting plates 34 on two sides, and a vehicle body inner ring force transmission structure is formed between the rear floor upper beam 60, the rear wheel cover connecting plates 34, the rear wheel cover support 33 and the Y-shaped reinforcing structure.
The rear wheel cover bracket 33 and the rear wheel cover connecting plates 34 are used for being fixed on the inner sides of the rear wheel cover bracket 33, and an additional transverse force transmission path is formed between the rear floor upper cross beam 60 and the rear wheel cover connecting plates 34 on two sides, wherein the force transmission path is positioned on the inner sides of two vehicle bottom force transmission paths, and the two vehicle bottom force transmission paths are combined one inside and one outside, so that the overall bending rigidity can be enhanced, and the side collision performance of a rear vehicle body is improved. In addition, the rear floor lower beam 61, the spare tire supporting beam 62 and the rear floor upper beam 60 are all trough beam bodies, the rear floor lower beam 61 and the spare tire supporting beam 62 are arranged upwards in a notch, and the rear floor upper beam 60 is buckled downwards in the notch and is positioned between the rear floor lower beam 61 and the spare tire supporting beam 62. The assembly mode of buckling up and down is adopted, the edges are aligned and then are welded in a lap joint mode, the original rear wheel cover 30 structure is strengthened, and chassis loads can be effectively transmitted and dispersed.
The vehicle according to the embodiment of the present invention includes a vehicle body rear structure that is identical to each of the embodiments of the vehicle body rear structure according to the embodiment of the present invention, and will not be described herein.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (9)
1. The rear part structure of the vehicle body is characterized by comprising a C/D column connecting plate, a rear side wall reinforcing plate and a rear wheel cover reinforcing plate which are sequentially arranged from top to bottom, wherein the C/D column connecting plate and the rear side wall reinforcing plate are of an integrated structure;
the C/D column connecting plate is provided with a C column upper joint and a D column upper joint, and the upper end of the rear side wall reinforcing plate is provided with a C column lower joint and a D column lower joint;
the C column upper joint is fixedly connected with the C column lower joint, and the D column upper joint is fixedly connected with the D column lower joint to form a Y-shaped reinforcing structure;
the lower end of the rear side wall reinforcing plate is fixedly connected with the rear wheel cover reinforcing plate, a rear auxiliary frame mounting bracket and a rear suspension spring mounting bracket are arranged at the lower part of the rear wheel cover reinforcing plate at intervals, and the Y-shaped reinforcing structure is connected with the rear wheel cover reinforcing plate to form an X-shaped force transmission structure;
the rear side wall reinforcing plate comprises a main body part, the outline size of the upper part of the main body part is gradually reduced from top to bottom, the lower C column joint is integrally connected with the front end of the main body part, and the lower D column joint is integrally connected with the rear end of the main body part.
2. The vehicle body rear structure according to claim 1, further comprising a D-pillar reinforcing plate, the D-pillar reinforcing plate and the D-pillar upper joint being butted to form a D-pillar, the D-pillar lower joint being provided parallel to an extending direction of the D-pillar, and the D-pillar lower joint being fixedly provided on a lower side of a butted position of the D-pillar reinforcing plate and the D-pillar upper joint.
3. The vehicle body rear structure according to any one of claims 1 to 2, further comprising a top beam assembly and a bottom beam assembly, the C/D pillar connecting panel, the rear side gusset and the rear wheel house gusset being provided symmetrically two with respect to a vehicle body longitudinal center line, respectively;
the top beam component is fixedly connected to the upper ends of the two C/D column connecting plates, and the bottom beam component is fixedly connected to the lower parts of the two rear wheel cover reinforcing plates to form an outer ring force transmission structure of the vehicle body.
4. A vehicle body rear structure according to claim 3, wherein the roof cross member assembly includes a roof auxiliary cross member and a roof rear cross member arranged in parallel at a spacing, the roof auxiliary cross member being connected to an upper end of the C/D pillar connecting plate corresponding to the C pillar, the roof rear cross member being connected to an upper side of the C/D pillar connecting plate corresponding to the D pillar.
5. The vehicle body rear structure according to claim 3, wherein the bottom beam assembly includes a rear underfloor beam and a spare tire support beam arranged in parallel at intervals, the lower portions of the rear wheel cover reinforcing plates are fixedly connected with the rear underfloor beam and the spare tire support beam, respectively, the rear suspension spring mounting bracket is provided on the outer side of the spare tire support beam, and the rear subframe mounting bracket is provided on the outer side of the rear underfloor beam.
6. The vehicle body rear structure according to claim 5, wherein a rear wheel cover bracket and a rear wheel cover connecting plate are further provided on the inner side of the rear wheel cover reinforcing plate, the upper portion of the rear wheel cover bracket is fixedly connected to the rear side wall reinforcing plate, and the lower portion of the rear wheel cover bracket is fixedly connected to the rear wheel cover connecting plate.
7. The vehicle body rear structure of claim 6, wherein the floor cross member assembly further comprises a rear floor cross member fixedly connected between the rear wheel cover connection plates on both sides, and wherein the rear floor cross member and the rear wheel cover connection plates, the rear wheel cover bracket, and the Y-shaped reinforcing structure form a vehicle body inner ring force transmission structure.
8. The vehicle body rear structure of claim 7, wherein the rear underfloor cross member, the spare tire support cross member, and the rear underfloor cross member are channel beam members, the rear underfloor cross member and the spare tire support cross member are arranged with the notch facing upward, and the rear underfloor cross member is engaged with the rear underfloor cross member and the spare tire support cross member with the notch facing downward.
9. An automobile comprising a vehicle body rear structure, the vehicle body rear structure being the vehicle body rear structure according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111503013.7A CN115214785B (en) | 2021-12-09 | 2021-12-09 | Automobile body rear structure and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111503013.7A CN115214785B (en) | 2021-12-09 | 2021-12-09 | Automobile body rear structure and car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115214785A CN115214785A (en) | 2022-10-21 |
| CN115214785B true CN115214785B (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111503013.7A Active CN115214785B (en) | 2021-12-09 | 2021-12-09 | Automobile body rear structure and car |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204507021U (en) * | 2015-01-08 | 2015-07-29 | 广州汽车集团股份有限公司 | Structure strengthened by C post |
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