CN217969656U - Rear floor assembly and vehicle - Google Patents

Rear floor assembly and vehicle Download PDF

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Publication number
CN217969656U
CN217969656U CN202220362477.4U CN202220362477U CN217969656U CN 217969656 U CN217969656 U CN 217969656U CN 202220362477 U CN202220362477 U CN 202220362477U CN 217969656 U CN217969656 U CN 217969656U
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mounting portion
longitudinal
rear floor
floor assembly
floor
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CN202220362477.4U
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Chinese (zh)
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刘超
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Xiaomi Automobile Technology Co Ltd
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Xiaomi Automobile Technology Co Ltd
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Abstract

The utility model relates to a rear floor assembly and vehicle, rear floor assembly include heel board crossbeam (10), rear floor front beam (20), rear floor rear beam (30), left side rear wheel casing (401), right side rear wheel casing (402), left side rear longitudinal beam (501), right side rear longitudinal beam (502) and floor panel (60) that integrative die-casting is together, heel board crossbeam (10), left side rear longitudinal beam (501), right side rear longitudinal beam (502) and rear floor front beam (20) enclose into frame construction to be as first installing zone, floor panel (60) with rear floor front beam (20), left side rear longitudinal beam (501), right side rear longitudinal beam (502) and rear floor rear beam (30) integrated second installing zone. Through above-mentioned technical scheme, this rear floor assembly that openly provides has better lightweight effect and safe crashworthiness.

Description

Rear floor assembly and vehicle
Technical Field
The disclosure relates to the technical field of vehicles, in particular to a rear floor assembly and a vehicle.
Background
Due to the fact that collision stress paths are transmitted, the rigidity and the strength of the whole vehicle body structure and various installation and sealing requirements, the traditional white vehicle body rear floor structure generally comprises a left rear longitudinal beam system, a right rear wheel casing system, a left rear wheel casing system, a right rear wheel casing system, a cross beam system, a rear floor panel, a trunk or a spare tire bin, corresponding reinforcing plates, connecting plates, fixing supports and other stamping sheet metal parts, and forms a rear floor assembly through connection modes such as resistance spot welding, riveting, screwing, gluing and the like. However, since the number of parts forming the rear floor assembly is large and the assembly is complicated, the effect of weight reduction is not remarkable and the performance of the parts of the product is defective.
SUMMERY OF THE UTILITY MODEL
The purpose of this disclosure is to provide a rear floor assembly and vehicle, this rear floor assembly has better lightweight effect and safe crashworthiness.
According to a first aspect of the present disclosure, a rear floor assembly is provided, where the rear floor assembly includes a heel plate cross beam, a rear floor front cross beam, a rear floor rear cross beam, a left rear wheel cover, a right rear wheel cover, a left rear longitudinal beam, a right rear longitudinal beam, and a floor panel, which are integrally die-cast together, the heel plate cross beam, the left rear longitudinal beam, the right rear longitudinal beam, and the rear floor front cross beam enclose a frame structure to serve as a first installation area, and the floor panel, the rear floor front cross beam, the left rear longitudinal beam, the right rear longitudinal beam, and the rear floor rear cross beam integrally form a second installation area.
Optionally, the first mounting area is used for accommodating at least a part of a complete vehicle power battery pack, and respective lower surfaces of the heel plate cross beam, the left side rear longitudinal beam, the right side rear longitudinal beam and the rear floor front cross beam jointly form a battery pack sealing surface for sealing the battery pack.
Optionally, the second mounting area is for receiving a rear subframe and a rear subframe spring disc, and is provided with mounting portions corresponding to the rear subframe and the rear subframe spring disc.
Optionally, the heel plate cross beam is disposed and connected between the left side rear longitudinal beam and the right side rear longitudinal beam, the rear floor front cross beam is disposed and connected between the left side rear longitudinal beam and the right side rear longitudinal beam, and a first structural reinforcement is disposed between the left side rear longitudinal beam and the right side rear longitudinal beam and the rear floor front cross beam respectively, and extends from the left side rear longitudinal beam or the right side rear longitudinal beam toward the rear floor front cross beam to form a polygonal structure together with the heel plate cross beam, the left side rear longitudinal beam, the right side rear longitudinal beam and the rear floor front cross beam.
Optionally, the rear floor rear cross member is formed at a rear side portion of the floor panel and is disposed between the left side rear longitudinal beam and the right side rear longitudinal beam, and the left side rear wheel cover and the right side rear wheel cover are integrally formed on the left side rear longitudinal beam and the right side rear longitudinal beam, respectively.
Optionally, the width between the left-side rear side member and the right-side rear side member in the lateral direction is gradually reduced from front to rear.
Optionally, the installation department is including being used for connecting first installation department and the second installation department of back sub vehicle frame, left side back longeron with right side back longeron all is provided with first installation department with the second installation department, first installation department with the second installation department is arranged and is provided with the mounting hole respectively along longitudinal separation.
Optionally, the installation department is including the third installation department that is used for connecting back sub vehicle frame spring holder, left side back longeron with right side back longeron all is provided with the third installation department, the third installation department is located first installation department with between the second installation department to be provided with the connecting hole.
Optionally, the longeron all has longeron anterior segment and longeron middle section behind the left side with the longeron behind the right side, the longeron anterior segment is followed vertical horizontal extension, the longeron middle section is followed vertical extension constructs for following the arch form of vertical arch upwards, first installation department the third installation department with the second installation department sets up by preceding back in proper order at intervals on the longeron middle section.
Optionally, the longitudinal beam front section and/or the longitudinal beam middle section are provided with a first reinforcing part, and the first reinforcing part comprises a plurality of first supporting parts in a Y shape and/or a plurality of second supporting parts in an inverted Y shape and/or an X-shaped supporting part which are arranged along the longitudinal direction.
Optionally, the front longitudinal beam section is further provided with a second reinforcing part, and the second reinforcing part comprises an X-shaped reinforcing rib and/or a V-shaped reinforcing rib which are arranged at intervals along the extending direction of the front longitudinal beam section and longitudinally reinforce the beam body.
Optionally, the rear floor assembly is provided with a U-shaped connecting groove for connecting the rear sections of the longitudinal beams, the U-shaped connecting groove includes a bottom wall and two side walls perpendicular to the bottom wall, the bottom wall is formed at the rear end of the left rear longitudinal beam or the rear end of the right rear longitudinal beam, and the two side walls are arranged oppositely in the transverse direction and are respectively provided with a through hole for a fastener to pass through.
Optionally, the outer sides of the two sidewalls are respectively provided with a second structural reinforcement, the second structural reinforcement protrudes from the sidewalls and is in arc transition with the sidewalls, and the through hole penetrates through the sidewalls and the second structural reinforcement.
Optionally, the left side rear wheel casing with the right side rear wheel casing include the wheel casing body and set up in rear damper installation department, third strengthening rib and the fourth strengthening rib of wheel casing body, vertical extension is followed to the third strengthening rib, the fourth strengthening rib with the third strengthening rib is the contained angle setting, wherein, the third strengthening rib with the fourth strengthening rib is located the rear damper installation department with between the bottom edge of wheel casing body.
According to a second aspect of the present disclosure, a vehicle is provided, which comprises the above-described rear floor assembly.
Through the technical scheme, the rear floor assembly that this disclosure provided passes through the heel board crossbeam, rear floor front beam, rear floor rear beam, left side rear wheel cover, right side rear wheel cover, left side rear longitudinal beam, the integrative die-casting shaping of right side rear longitudinal beam and floor panel, through integrative die-casting with traditional panel beating vehicle body structure's 70 a plurality of parts integrated into a casting part, can realize better lightweight effect from this, integrated die-casting shaping's rear floor assembly can absorb in bumping, transmit collision energy simultaneously, protection passenger and battery safety.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure, but do not constitute a limitation of the disclosure. In the drawings:
FIG. 1 is a schematic perspective view of a rear floor assembly provided by an embodiment of the present disclosure;
FIG. 2 is another perspective view of a rear floor assembly provided by an embodiment of the present disclosure;
FIG. 3 is a schematic perspective view of a rear floor assembly provided by an embodiment of the present disclosure;
FIG. 4 is an enlarged schematic view of detail A of FIG. 3;
FIG. 5 is a schematic structural view of a rear floor assembly provided by an embodiment of the present disclosure;
FIG. 6 is a schematic structural view of a rear rail in a rear floor assembly provided by an embodiment of the present disclosure;
FIG. 7 is another schematic structural view of a rear floor assembly provided by embodiments of the present disclosure.
Description of the reference numerals
10-heel plate beam; 20-rear floor front cross member; 30-rear floor rear cross member; 401-left rear wheel cover; 402-right rear wheel cover; 403-rear shock absorber mount; 404-a third reinforcing rib; 405-a fourth stiffener; 406-bottom edge; 501-left rear longitudinal beam; 502-right side rear rail; 503-a first mounting portion; 5031-a joining station; 5032-circumferential side wall; 5033-mounting the upright post; 5034-first reinforcing bar; 504-a second mounting portion; 5041-mounting boss; 505-a third mount portion; 5051-outer shaft tube; 5052-inner shaft tube; 5053-a second reinforcing rib; 5054-connecting ribs; 506-mounting holes; 507-connecting holes; 508-a first support; 509-a second support; 5010-X type reinforcing rib; 5011-V type reinforcing rib; 60-floor panels; 601-a plate-like body; 602-left side panel; 603-right side plate; 604-front side panel; 605-rear side plate; 701-bottom wall; 702-a sidewall; 703-a through hole; 704-a second structural reinforcement; 80-first structural reinforcement.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, unless otherwise stated, terms of orientation such as "up, down, left, right, front, and rear" are used to define an XYZ coordinate system of the vehicle based on the vehicle, where X is a longitudinal direction of the vehicle corresponding to front and rear positions, Y is a lateral direction of the vehicle corresponding to left and right positions, and Z is a vertical direction of the vehicle corresponding to upper and lower positions; based on the driving position of the driver, the direction in which the driver faces is the front, the reverse direction is the rear, the direction in which the left hand of the driver is located is the left, the reverse direction is the right, and the direction in which the head of the driver is located is the upper direction, and the reverse direction is the lower direction. Corresponding to the orientation coordinate system represented in the figures can be referenced. Further, "inner and outer" are inner and outer with respect to the contour of the corresponding component itself. Furthermore, the terms "first," "second," "third," and the like as used herein are intended to distinguish one element from another, and are not necessarily sequential or significant. Furthermore, in the following description, when referring to the figures, the same reference numbers in different figures denote the same or similar elements, unless otherwise explained. The foregoing definitions are provided to illustrate and describe the present disclosure only and should not be construed to limit the present disclosure.
According to a first aspect of the present disclosure, referring to fig. 1 to 7, there is provided a rear floor assembly including a heel plate cross member 10, a rear floor front cross member 20, a rear floor rear cross member 30, a left side rear wheel house 401, a right side rear wheel house 402, a left side rear longitudinal member 501, a right side rear longitudinal member 502, and a floor panel 60 which are integrally die-cast together, the heel plate cross member 10, the left side rear longitudinal member 501, the right side rear longitudinal member 502, and the rear floor front cross member 20 enclosing a frame structure to serve as a first installation area, and the floor panel 60 integrally forming a second installation area with the rear floor front cross member 20, the left side rear longitudinal member 501, the right side rear longitudinal member 502, and the rear floor rear cross member 30.
Through the technical scheme, the rear floor assembly provided by the disclosure is formed by integrally die-casting the heel plate cross beam 10, the rear floor front cross beam 20, the rear floor rear cross beam 30, the left rear wheel cover 401, the right rear wheel cover 402, the left rear longitudinal beam 501, the right rear longitudinal beam 502 and the floor panel 60, a plurality of 70 parts of the traditional sheet metal vehicle body structure are integrated into one casting part through integral die-casting, therefore, the better lightweight effect can be realized, meanwhile, the rear floor assembly formed by integral die-casting can absorb and transmit collision energy in rear collision, and the safety of passengers and batteries is protected.
In the specific embodiment provided by the present disclosure, the first mounting area is used for accommodating at least a part of a power battery pack of a whole vehicle, and the respective lower surfaces of the heel plate cross beam 10, the left side rear longitudinal beam 501, the right side rear longitudinal beam 502 and the rear floor front cross beam 20 together form a battery pack sealing surface for sealing the battery pack. When assembled, the upper part of the battery pack is flush with the upper surfaces of the heel plate cross beam 10, the left side rear longitudinal beam 501, the right side rear longitudinal beam 502 and the rear floor front cross beam 20, and the lower surfaces of the heel plate cross beam 10, the left side rear longitudinal beam 501, the right side rear longitudinal beam 502 and the rear floor front cross beam 20 are in contact with the battery pack and seal the battery pack.
In the specific embodiments provided in this disclosure, the second mounting area is used to accommodate the rear subframe and rear subframe spring disc and is provided with mounting portions corresponding to the rear subframe and rear subframe spring disc to connect the rear subframe and rear subframe spring disc with the rear floor assembly. Wherein, in the second installation area, the structure of motor, transmission component, etc. is also accommodated below the floor panel 60, and the detailed description of the disclosure is omitted.
In the specific embodiment provided by the present disclosure, referring to fig. 1 and 2, the heel plate cross member 10 is disposed and connected between the left side rear longitudinal member 501 and the right side rear longitudinal member 502, the rear floor front cross member 20 is disposed and connected between the left side rear longitudinal member 501 and the right side rear longitudinal member 502, the left side rear longitudinal member 501 and the right side rear longitudinal member 502 are respectively disposed with the rear floor front cross member 20 with a first structural reinforcement 80 therebetween, and the first structural reinforcement 80 extends from the left side rear longitudinal member 501 or the right side rear longitudinal member 502 toward the rear floor front cross member 20 to form a polygonal structure together with the heel plate cross member 10, the left side rear longitudinal member 501, the right side rear longitudinal member 502, and the rear floor front cross member 20. The first structural reinforcement 80 may be configured as a triangular reinforcement block integrally formed with the rear floor front cross member 20 and the left side rear longitudinal member 501 or the right side rear longitudinal member 502, so as to reinforce the structural strength between the left side rear longitudinal member 501 or the right side rear longitudinal member 502 and the rear floor front cross member 20 and ensure the structural reliability.
In the embodiment provided by the present disclosure, referring to fig. 1 to 3, the rear floor rear cross member 30 is formed at the rear side portion of the floor panel 60 and is disposed between the left and right rear side members 501 and 502, and the left and right rear wheel covers 401 and 402 are integrally formed on the left and right rear side members 501 and 502, respectively.
In the specific embodiment provided by the present disclosure, referring to fig. 5, the width in the lateral direction between the left-side rear side member 501 and the right-side rear side member 502 is gradually reduced from the front to the rear, that is, the distance between the left-side rear side member 501 and the right-side rear side member 502 is gradually reduced from the front to the rear. Through the design, the overall structure of the rear floor assembly can be more compact.
In the specific embodiment provided in the present disclosure, referring to fig. 1 to 3, the floor panel 60 includes a plate-shaped main body 601 and a plurality of side plates surrounding the plate-shaped main body 601, the plurality of side plates are respectively connected to the plate-shaped main body 601, wherein an included angle between each side plate and the plate-shaped main body 601 may be the same or different, and an arc transition between each side plate and the plate-shaped main body 601 may reduce stress concentration at a connection portion of the side plate and the plate-shaped main body 601, thereby enhancing structural rigidity of the floor panel 60.
As shown in fig. 2, the side panels include a left side panel 602 and a right side panel 603, the left side panel 602 and the right side panel 603 are respectively located at the left side portion and the right side portion of the plate-shaped main body 601, and the left side panel 602 and the right side panel 603 are respectively connected with the left side rear longitudinal beam 501 and the right side rear longitudinal beam 502 in a smooth transition manner, so that the floor panel 60 can have high structural fluency, thereby reducing stress concentration between the left side panel 602 and the left side rear longitudinal beam 501, and reducing stress concentration between the right side panel 603 and the right side rear longitudinal beam 502, and facilitating improvement of structural strength and service life of the floor panel 60 and the rear floor assembly including the floor panel 60.
As shown in fig. 1 and fig. 2, the side plate includes a front side plate 604, the front side plate 604 is located at a front side portion of the plate-shaped main body 601, and the front side plate 604 and the front cross beam 20 of the rear floor are in circular arc transition, so that high structural fluency can be provided between the front side plate 604 and the front cross beam 20 of the rear floor, thereby reducing stress concentration between the front side plate 604 and the front cross beam 20 of the rear floor, and facilitating improvement of structural strength and service life of the floor panel 60 and the rear floor assembly including the floor panel 60.
In the specific embodiment provided by the present disclosure, the rear floor assembly provides a fixing point for the rear subframe, and as shown in fig. 5 to 7, the mounting portion includes a first mounting portion 503 and a second mounting portion 504 for connecting the rear subframe, each of the left side rear side member 501 and the right side rear side member 502 is provided with a first mounting portion 503 and a second mounting portion 504, the first mounting portion 503 and the second mounting portion 504 are arranged at intervals in the longitudinal direction and are respectively provided with mounting holes 506, wherein the first mounting portion 503 is used as a front mounting point of the rear subframe, the second mounting portion 504 is used as a rear mounting point of the rear subframe, and a fastener (such as a bolt, a rivet and the like) passes through the rear subframe and is fastened and mounted in the mounting holes 506 to mount the rear subframe to the rear floor assembly. The first mounting portion 503 and the second mounting portion 504 are arranged right below the left side rear longitudinal beam 501 and the right side rear longitudinal beam 502, the positions of the first mounting portion 503 and the second mounting portion 504 are of a local die-cast solid structure, the mounting holes 506 are formed through machining, and the back surfaces of the first mounting portion 503 and the second mounting portion 504 are supported by a large structural surface, so that the rigidity and the durability of the mounting point of the rear subframe are improved. Here, the above-described structural surface can be understood as a projection surface of the first mounting portion 503 and the second mounting portion 504 on the left side rear side member 501 and the right side rear side member 502, respectively.
The first mounting portion 503 may be configured in any suitable manner to facilitate mounting of the rear subframe to the rear floor assembly. Alternatively, referring to fig. 6, the first mounting portion 503 may include a hollow columnar body including a connecting stand 5031 and a circumferential side wall 5032 surrounding the connecting stand 5031, the circumferential side wall 5032 extending from the connecting stand 5031 toward the left side rear side member 501 or the right side rear side member 502 and being connected to the lower surface of the left side rear side member 501 or the lower surface of the rear side member 502, and a mounting pillar 5033 located inside the hollow columnar body and connecting the connecting stand 5031 and the lower surface of the left side rear side member 501 or the lower surface of the right side rear side member 502, the mounting pillar 5033 being provided with a mounting hole 507 coaxially. Among them, the circumferential side wall 5032 and/or the mounting pillar 5033 may make an arc transition with the left or right rear side frame 501 or 502, thereby reducing stress concentration between the first mounting portion 503 and the left or right rear side frame 501 or 502 and enhancing the structural strength of the first mounting portion 503.
Among them, the outer side of the circumferential side wall 5032 may be provided with a plurality of first reinforcing ribs 5034, and the plurality of first reinforcing ribs 5034 are arranged along the circumferential direction of the circumferential side wall 5032 and connect the circumferential side wall 5032 and the left or right rear side frame 501 or 502 to enhance the structural strength of the first mounting portion 503 and achieve reliable mounting of the rear subframe and the rear floor assembly.
Wherein the second mounting portion 504 may be configured in any suitable manner. Alternatively, referring to fig. 6, the second mounting portion 504 may include a mounting boss 5041 protruding from the lower surface of the left or right rear side member 501 or 502 and a connecting pillar extending from the mounting boss 5041 toward the left or right rear side member 501 or 502 beyond the lower surface of the left or right rear side member 501 or 502, the connecting pillar being coaxially provided with the mounting hole 506.
Furthermore, in the specific embodiment provided by the present disclosure, the rear floor assembly further provides a fixing point for the rear subframe spring disc, and referring to fig. 5 to 7, the mounting portion includes a third mounting portion 505 for connecting the rear subframe spring disc, each of the left side rear side member 501 and the right side rear side member 502 is provided with the third mounting portion 505, the third mounting portion 505 is located between the first mounting portion 503 and the second mounting portion 504 and is provided with a connecting hole 507, and a fastening member (such as a bolt, a rivet, and the like) passes through the rear subframe spring disc and is fastened and mounted to the connecting hole 506 to mount the rear subframe spring disc to the rear floor assembly. The third mounting portion 505 is arranged right below the left side rear longitudinal beam 501 and the right side rear longitudinal beam 502, a local die-cast solid structure is arranged at the position of the third mounting portion 505, a connecting hole 507 is formed through machining, and the back of the third mounting portion 505 is supported by a large structural surface, so that the rigidity and the durability of the mounting point of the rear subframe spring disc are improved. The above-described structural surface can be understood as a projection surface of the third mounting portion 505 on the left side rear side member 501 and the right side rear side member 502.
Wherein the third mount 505 may be configured in any suitable manner to facilitate mounting of the rear subframe spring holder to the rear floor assembly. Alternatively, referring to fig. 6, the third mounting portion 505 may include an outer cylinder 5051 and an inner cylinder 5052 that are coaxially arranged and connected, the outer cylinder 5051 and the inner cylinder 5052 extending downward in the vertical direction from the lower surface of the left side rear side member 501 or the lower surface of the right side rear side member 502, the inner cylinder 5052 being coaxially provided with the connecting hole 506. The outer shaft 5051 and/or the inner shaft 5052 may be in arc transition with the left side rear longitudinal beam 501 or the right side rear longitudinal beam 502, thereby reducing stress concentration between the third mounting portion 505 and the left side rear longitudinal beam 501 or the right side rear longitudinal beam 502 and enhancing the structural strength of the third mounting portion 505.
A plurality of second reinforcing ribs 5053 are arranged on the outer side of the outer cylinder 5051, and the second reinforcing ribs 5053 are arranged along the circumferential direction of the outer cylinder 5051 and connect the outer cylinder 5051 with the left rear longitudinal beam 501 or the right rear longitudinal beam 502, so that the structural strength of the third mounting portion 505 is enhanced, and the rear subframe spring disc and the rear floor assembly are reliably mounted.
Connecting ribs 5054 are connected between the outer shaft cylinder 5051 and the inner shaft cylinder 5052, the connecting ribs 5054 extend perpendicularly to the outer shaft cylinder 5051 and the inner shaft cylinder 5052, connection between the outer shaft cylinder 5051 and the inner shaft cylinder 5052 is achieved through the connecting ribs 5054, and meanwhile structural strength of the inner shaft cylinder 5052 is enhanced, and therefore the rigidity and the durability of the rear subframe spring disc mounting point are improved.
In the embodiment provided by the present disclosure, as shown in fig. 1 and fig. 5 to fig. 7 in combination, the left-side rear side member 501 and the right-side rear side member 502 have a front side member section extending horizontally in the longitudinal direction and a middle side member section extending horizontally in the longitudinal direction and configured in an arch shape arching upward in the vertical direction, and the first mounting portion 503, the third mounting portion 505, and the second mounting portion 504 are sequentially provided on the middle side member section at intervals from front to rear.
In the specific embodiment provided by the present disclosure, referring to fig. 7, each of the left-side rear longitudinal beam 501 and the right-side rear longitudinal beam 502 includes a beam body including a longitudinal beam front section extending horizontally in the longitudinal direction and a longitudinal beam middle section extending horizontally in the longitudinal direction and configured in an arch shape arching upward in the vertical direction.
The first reinforcing part is arranged on the front longitudinal beam section and/or the middle longitudinal beam section, and comprises a plurality of Y-shaped first supporting parts 508 and/or a plurality of inverted Y-shaped second supporting parts 509 which are longitudinally arranged so as to reinforce the structural strength of the beam body vertically. By utilizing the characteristics of the Y-shaped or inverted Y-shaped structure, the stress of the beam body can be dispersed, the stress concentration is reduced, the structural rigidity of the beam body is enhanced, and the beam is simple in structure and low in manufacturing cost. Wherein the plurality of first support portions 508 and the plurality of second support portions 509 may be alternately arranged in sequence along the extending direction of the beam body. By means of the sequential alternate arrangement, stress of the beam body can be balanced, and weight and performance of the beam body can be balanced. Further, the first reinforcement part may further include a plurality of X-shaped support parts arranged in the longitudinal direction, which is not particularly limited by the present disclosure.
In the embodiment provided in the present disclosure, referring to fig. 5, in order to enhance the structural strength of the front section of the side member, the front section of the side member is provided with a second reinforcing portion including X-shaped reinforcing ribs 5010 and/or V-shaped reinforcing ribs 5011 arranged at intervals in the extending direction of the front section of the side member to reinforce the structural strength of the front section of the side member in the longitudinal direction. One or more X-shaped reinforcing ribs 5010 can be arranged on the front section of the longitudinal beam, and/or one or more V-shaped reinforcing ribs 5011 can be arranged on the front section of the longitudinal beam.
In the specific embodiment provided by the present disclosure, referring to fig. 3 and 4, the rear floor assembly is provided with a U-shaped connecting groove for connecting the rear sections of the longitudinal beams, the U-shaped connecting groove includes a bottom wall 701 and two side walls 702 perpendicular to the bottom wall 701, the bottom wall 701 is formed at the rear end of the left side rear longitudinal beam 501 or the rear end of the right side rear longitudinal beam 502, the two side walls 702 are arranged opposite to each other in the lateral direction and are respectively provided with through holes 703 through which fasteners (e.g., bolts, rivets, etc.) pass. Wherein, the longeron back end chooses for use aluminium extrusion structure and its link from taking riveting nut so that the spiro union fastening, when longeron back end and back floor assembly installation, lay longeron back end along Z to from last down, after the position of reacing U type spread groove, along Y to the bolt of screwing up, accomplish longeron back end and left side back longeron 501 and right side back longeron 502's being connected from this. In addition, the U-shaped connecting groove is simple in process in the machining process, and the machining difficulty and the machining cost of the rear floor assembly are reduced. In the rear floor assembly provided by the disclosure, the rear section of the longitudinal beam can be crumpled and absorbed under the condition that the vehicle collides, the collision safety of the vehicle is favorably improved, and after the rear section of the longitudinal beam is deformed due to collision and crumple absorption, the rear section of the longitudinal beam can be replaced by detachably connecting the rear section of the longitudinal beam with the U-shaped connecting groove, so that the rear floor assembly has higher maintenance economy, and the maintenance cost of the vehicle in collision can be reduced.
Wherein, referring to fig. 4 and fig. 7 in combination, the outer sides of the two sidewalls 702 may be respectively provided with a second structural reinforcement 704, the second structural reinforcement 704 protrudes from the sidewalls 702 and is in arc transition with the sidewalls 702, and the through hole 703 penetrates through the sidewalls 702 and the second structural reinforcement 704. The second structural reinforcement 704 may be configured as a bump, and the provision of the second structural reinforcement 704 may increase the thickness of the side wall 702 at the through hole 703, thereby enhancing the structural rigidity of the side wall 702, thereby ensuring a reliable connection of the rear floor assembly with the rear section of the side member.
In the embodiments provided by the present disclosure, the rear floor assembly also provides a fastening point for parts such as rear seats, seat belts, isofix, battery packs, and the like. For example, the heel plate cross member 10 is provided with a mounting portion for mounting a rear seat. Also for example, the heel-plate cross member 10, the left-side rear longitudinal member 501, the right-side rear longitudinal member 502, and the rear floor front cross member 20 enclose a battery pack sealing surface for sealing the battery pack. For another example, the left rear wheel house 401 and the right rear wheel house 402 are respectively provided with mounting portions to which the rear shock absorbers are mounted and fixed. In addition, the rear floor assembly provided by the disclosure is connected with a side wall, a rear longitudinal beam rear section, a rear floor trunk and a threshold by adopting aluminum spot welding, screw connection, SPR (Self-Piercing riveting) and FDS (Flow DralScreen, wherein bolts are automatically screwed).
In the specific embodiment provided by the present disclosure, referring to fig. 7, the left rear wheel casing 401 and the right rear wheel casing 402 include a wheel casing body, and a rear damper mounting portion 403, a third reinforcing rib 404 and a fourth reinforcing rib 405 which are provided on the wheel casing body, the third reinforcing rib 404 extends in the vertical direction, the fourth reinforcing rib 405 and the third reinforcing rib 404 are disposed at an included angle, wherein the third reinforcing rib 404 and the fourth reinforcing rib 405 are located between the rear damper mounting portion 403 and a bottom edge 406 of the wheel casing body. Wherein, the distance between the fourth reinforcing rib 405 and the third reinforcing rib 404 is gradually increased along the vertical direction.
Wherein, the extending direction of the third strengthening rib 404 is vertical direction, that is, the third strengthening rib 404 is vertical rib, and the distance between the fourth strengthening rib 405 from top to bottom direction for the third strengthening rib 404 increases gradually, and it can also be understood that, along the bottom edge 406 towards the wheel casing body, the fourth strengthening rib 405 is radially inclined and arranged for the third strengthening rib 404, so that the impact stress of the rear shock absorber mounting part 403 can be better dispersed and buffered, and the stress concentration of the rear shock absorber mounting part 403 is avoided.
According to a second aspect of the present disclosure, a vehicle is provided, which comprises the above-described rear floor assembly. The vehicle provided by the present disclosure also has the above features, and is not described herein again in order to avoid redundancy.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure as long as it does not depart from the gist of the present disclosure.

Claims (15)

1. The rear floor assembly is characterized by comprising a heel plate cross beam (10), a rear floor front cross beam (20), a rear floor rear cross beam (30), a left rear wheel cover (401), a right rear wheel cover (402), a left rear longitudinal beam (501), a right rear longitudinal beam (502) and a floor panel (60) which are integrally formed by die casting, wherein the heel plate cross beam (10), the left rear longitudinal beam (501), the right rear longitudinal beam (502) and the rear floor front cross beam (20) enclose a frame structure to be used as a first installation area, and the floor panel (60), the rear floor front cross beam (20), the left rear longitudinal beam (501), the right rear longitudinal beam (502) and the rear floor rear cross beam (30) are integrally formed into a second installation area.
2. The rear floor assembly according to claim 1, wherein the first mounting area is configured to receive at least a portion of a power battery pack of a complete vehicle, and respective lower surfaces of the heel plate cross member (10), the left side rear longitudinal member (501), the right side rear longitudinal member (502) and the rear floor front cross member (20) jointly form a battery pack sealing surface for sealing the battery pack.
3. The rear floor assembly of claim 1, wherein the second mounting area is configured to receive a rear subframe and a rear subframe spring plate and is provided with mounting portions corresponding to the rear subframe and the rear subframe spring plate.
4. The rear floor assembly according to claim 1, wherein the heel panel cross member (10) is disposed and connected between the left side rear longitudinal member (501) and the right side rear longitudinal member (502), the rear floor front cross member (20) is disposed and connected between the left side rear longitudinal member (501) and the right side rear longitudinal member (502), and a first structural reinforcement (80) is disposed between each of the left side rear longitudinal member (501) and the right side rear longitudinal member (502) and the rear floor front cross member (20), the first structural reinforcement (80) extending from the left side rear longitudinal member (501) or the right side rear longitudinal member (502) toward the rear floor front cross member (20) to form a polygonal structure together with the heel panel cross member (10), the left side rear longitudinal member (501), the right side rear longitudinal member (502), and the rear floor front cross member (20).
5. The rear floor assembly according to claim 1, wherein the rear floor cross member (30) is formed at a rear side portion of the floor panel (60) and is disposed between the left side rear side member (501) and the right side rear side member (502), and the left side rear wheel house (401) and the right side rear wheel house (402) are integrally formed on the left side rear side member (501) and the right side rear side member (502), respectively.
6. The rear floor assembly according to claim 1, wherein a width between the left side rear side member (501) and the right side rear side member (502) in the lateral direction is gradually reduced from front to rear.
7. The rear floor assembly according to claim 3, wherein the mounting portion includes a first mounting portion (503) and a second mounting portion (504) for connecting the rear sub frame, the left side rear side member (501) and the right side rear side member (502) are each provided with the first mounting portion (503) and the second mounting portion (504), and the first mounting portion (503) and the second mounting portion (504) are arranged at a longitudinal interval and are each provided with a mounting hole (506).
8. The rear floor assembly of claim 7, wherein the mounting portion comprises a third mounting portion (505) for connecting the rear subframe spring plate, wherein the left side rear longitudinal beam (501) and the right side rear longitudinal beam (502) are each provided with the third mounting portion (505), and wherein the third mounting portion (505) is located between the first mounting portion (503) and the second mounting portion (504) and is provided with a connecting hole (507).
9. The rear floor assembly according to claim 8, wherein the left-side rear side member (501) and the right-side rear side member (502) have a front side member section extending horizontally in the longitudinal direction and a middle side member section extending in the longitudinal direction and configured in an arch shape upwardly arched in the vertical direction, and the first attaching portion (503), the third attaching portion (505) and the second attaching portion (504) are provided on the middle side member section at regular intervals from the front to the rear.
10. The rear floor assembly according to claim 9, wherein the side member middle section is provided with a first reinforcement portion including a plurality of Y-shaped first support portions (508) and/or a plurality of inverted Y-shaped second support portions (509) and/or X-shaped support portions arranged in a longitudinal direction.
11. The rear floor assembly according to claim 9 or 10, wherein the longitudinal beam front section is provided with a second reinforcement portion comprising longitudinally reinforced X-shaped reinforcement ribs (5010) and/or V-shaped reinforcement ribs (5011) arranged at intervals in the extending direction of the longitudinal beam front section.
12. The rear floor assembly according to claim 1, wherein the rear floor assembly is provided with a U-shaped connecting groove for connecting the rear sections of the longitudinal members, the U-shaped connecting groove includes a bottom wall (701) and two side walls (702) perpendicular to the bottom wall (701), the bottom wall (701) is formed at the rear end of the left side rear longitudinal member (501) or the rear end of the right side rear longitudinal member (502), the two side walls (702) are arranged oppositely in the lateral direction and are respectively provided with through holes (703) through which the fastening members pass.
13. Rear floor assembly according to claim 12, characterized in that the two side walls (702) are provided with a second structural reinforcement (704) on the outside, respectively, and that the through hole (703) extends through the side walls (702) and the second structural reinforcement (704).
14. The rear floor assembly according to claim 1, wherein the left rear wheel housing (401) and the right rear wheel housing (402) include a wheel housing body and a rear shock absorber mounting portion (403), a third reinforcing rib (404) and a fourth reinforcing rib (405) provided on the wheel housing body, the third reinforcing rib (404) extends in a vertical direction, the fourth reinforcing rib (405) and the third reinforcing rib (404) are disposed at an included angle, wherein the third reinforcing rib (404) and the fourth reinforcing rib (405) are located between the rear shock absorber mounting portion (403) and a bottom edge (406) of the wheel housing body.
15. A vehicle, characterized in that the vehicle comprises a rear floor assembly according to any of claims 1-14.
CN202220362477.4U 2022-02-22 2022-02-22 Rear floor assembly and vehicle Active CN217969656U (en)

Priority Applications (1)

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CN202220362477.4U CN217969656U (en) 2022-02-22 2022-02-22 Rear floor assembly and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220362477.4U CN217969656U (en) 2022-02-22 2022-02-22 Rear floor assembly and vehicle

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115892246A (en) * 2023-01-06 2023-04-04 中国第一汽车股份有限公司 Floor structure and have its vehicle behind automobile body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115892246A (en) * 2023-01-06 2023-04-04 中国第一汽车股份有限公司 Floor structure and have its vehicle behind automobile body
CN115892246B (en) * 2023-01-06 2024-12-27 中国第一汽车股份有限公司 Rear floor structure of vehicle body and vehicle with rear floor structure

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