CN110962942A - Lower automobile body rear portion frame assembly - Google Patents
Lower automobile body rear portion frame assembly Download PDFInfo
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- CN110962942A CN110962942A CN201811148024.6A CN201811148024A CN110962942A CN 110962942 A CN110962942 A CN 110962942A CN 201811148024 A CN201811148024 A CN 201811148024A CN 110962942 A CN110962942 A CN 110962942A
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- 238000005192 partition Methods 0.000 claims abstract description 37
- 230000003014 reinforcing effect Effects 0.000 claims description 33
- 238000003466 welding Methods 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 description 10
- 239000006096 absorbing agent Substances 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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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
- 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
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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
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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 frame assembly of a lower vehicle body, which comprises a wheel cover supporting plate, a rear girder partition plate and a rear girder assembly, wherein the rear girder partition plate comprises a first horizontal wall and two first vertical walls, the two first vertical walls are respectively fixed at the left end and the right end of the first horizontal wall, a partition plate cavity is formed between the two first vertical walls and the first horizontal wall as well as the bottom wall and the side wall of the rear girder assembly, the wheel cover supporting plate comprises a second horizontal wall, a third vertical wall and two second vertical walls, the lower surface of the second horizontal wall is fixed with the upper surface of the first horizontal wall, and a supporting plate cavity is formed between the outer surface of the middle lower end of the third vertical wall and the inner surface of the corresponding wheel cover inner plate as well as the outer surface of the first horizontal wall. According to the lower vehicle body rear frame assembly, on one hand, the connection points of the wheel cover supporting plates and the rear girder assembly are increased, the connection strength is enhanced, and on the other hand, stress concentration at the connection parts of the wheel cover supporting plates and the rear girder assembly is avoided.
Description
Technical Field
The invention relates to a lower vehicle body rear frame assembly, in particular to a lower vehicle body rear frame assembly with a vehicle body continuous cavity structure.
Background
The supporting frame of the bearing type vehicle body is usually realized by forming a closed cavity by sheet metal parts in all cross section directions, as shown in fig. 1 to 2, the supporting frame of the existing vehicle type X cross section is usually designed at a D column 012 and a tail door frame 03 consciously, a cross beam 09 of a lower vehicle body 02 in the middle of the vehicle body transfers force with the tail door frame 03, a continuous cavity is not formed when the cross beam 09 is connected with a wheel cover 04 and a C column 010, only a wheel cover inner plate reinforcing plate 08 and a wheel cover single plate form a wheel cover reinforcing plate cavity, and the upper sides of the wheel cover inner plate reinforcing plate 08 are connected in a way of connecting the wheel cover single plate 05 or a multilayer plate. The drawbacks of this structure with respect to the larger (heavier) models developed today are mainly:
1. as shown in fig. 2, the connection point between the wheel casing bracing plate 06 and the rear girder assembly 07 is too few, and is easy to become a weak point of the support frame;
2. the cross beam 09 and the wheel cover supporting plate 06 are staggered, and the cavity is discontinuous;
3. the wheel cover single plate 05 is connected with the upper vehicle body 01 only, so that the stress is limited, and the situation that the whole vehicle body is subjected to cooperative stress by the load-bearing vehicle body is not met;
3. the supporting frames at the rear part of the vehicle body are too few, and for the vehicle type with larger size (heavier), the supporting frames designed by the vehicle type with common size, namely the supporting frames of the C column 010 and the middle part of the lower vehicle body 02 and the D column 012 and the tail end plate 03 have great defects on the performance requirement of the vehicle body;
4. the supporting frame of the existing vehicle type X-direction section is usually designed at a D column 012 and a tail door frame 03 consciously, and the middle part of a vehicle body is only leaned on a cross beam 09 of a lower vehicle body 02 to transfer force with the tail door frame 03.
5. As shown in fig. 3, the cross member lap joint 014 is difficult to weld with the rear floor and the rear girder assembly 07, especially, as shown in the dashed line frame of fig. 3, when the rear floor covers the rear cross member lap joint 014 and is welded with the rear girder assembly 07, the welding gun cannot enter the closed cavity.
Disclosure of Invention
The invention is completed for solving the defects in the prior art, and the invention aims to provide a lower vehicle body rear frame assembly which increases the connection point of a wheel cover supporting plate and a rear girder assembly to strengthen the connection strength and avoids the stress concentration at the connection part of the wheel cover supporting plate and the rear girder assembly.
The rear frame assembly of the lower vehicle body comprises wheel cover supporting plates, a rear girder partition plate and a rear girder assembly, wherein the longitudinal section of the rear girder partition plate is n-shaped, the longitudinal section of the wheel cover supporting plates is L-shaped, the longitudinal section of the rear girder assembly is u-shaped, the rear girder partition plate comprises a first horizontal wall and two first vertical walls, the two first vertical walls are respectively fixed at the left end and the right end of the first horizontal wall, the bottom walls of the two first vertical walls are respectively and fixedly connected with the bottom wall of the rear girder assembly, the front end part and the rear end part of the two first vertical walls are respectively fixed with the front side wall and the rear side wall of the rear girder assembly, a closed partition plate cavity is formed between the inner surface of the two first vertical walls and the lower surface of the first horizontal wall on the rear girder partition plate and the outer surface of the bottom wall and the outer surface of the side wall of the rear girder assembly, and the wheel cover supporting plates comprise second, Third vertical wall and two vertical walls of second, the vertical wall of third is fixed in second horizontal wall upper end, two the vertical wall of second is fixed both ends about the second horizontal wall, third vertical wall upper end surface and the wheel casing inner panel internal surface that corresponds are fixed, two the vertical wall internal surface of second is fixed respectively and is corresponded on the first vertical wall surface, second horizontal wall lower surface with first horizontal wall upper surface is fixed, two on the wheel casing fagging lower extreme surface and corresponding in the vertical wall of third wheel casing inner panel internal surface and form confined fagging cavity between the first horizontal wall surface.
The two first vertical wall bottom walls are respectively provided with first turned-over edges extending outwards, the front end part and the rear end part of each first vertical wall are respectively provided with second turned-over edges extending outwards, the two first vertical wall bottom walls are respectively fixedly connected with the bottom wall of the rear girder assembly through corresponding first turned-over edges, and the front end part and the rear end part of each first vertical wall are respectively fixedly connected with the front side wall and the rear side wall of the rear girder assembly through corresponding second turned-over edges.
The tail lamp and the tail lamp mounting structure of the invention can also be that:
two first vertical wall diapire respectively with back girder assembly diapire passes through resistance welding formula welded fastening, second horizontal wall lower surface pass through resistance welding formula with first horizontal wall upper surface is fixed, two tip around the first vertical wall respectively with the front and back lateral wall of back girder assembly passes through resistance welding formula welded fastening and is connected.
The rear girder assembly is fixed with the cross beam lap joint, the cross beam lap joint is provided with a seat mounting support, and the horizontal distance between the seat mounting support and the rear girder assembly is larger than 40 mm.
And a welding process hole is formed in the bottom of the cross beam lap joint and is positioned between the seat mounting bracket and the rear girder assembly.
The wheel casing reinforcing plate comprises a supporting plate cavity, a baffle cavity and a top cover beam cavity, and is characterized in that the left sides of the supporting plate cavity and the baffle cavity are wheel casing reinforcing plate cavities, the right sides of the baffle cavity are beam cavities, the upper sides of the wheel casing reinforcing plate cavities are side wall cavities and C column cavities, and the upper sides of the side wall cavities and the C column cavities are top cover beam cavities.
The top cover beam cavity, the side wall cavity, the C column cavity, the wheel cover reinforcing plate cavity, the wheel cover cavity, the partition plate cavity and the beam cavity form a continuous cavity assembly.
The side wall cavity is composed of a side wall outer plate, a C-column reinforcing plate and a wheel cover outer plate.
The C-pillar cavity is composed of a C-pillar reinforcing plate, a side wall inner plate and a wheel cover outer plate.
The beam cavity consists of a beam and a rear floor.
The rear frame assembly of the lower vehicle body comprises wheel cover supporting plates, a rear girder partition plate and a rear girder assembly, wherein the longitudinal section of the rear girder partition plate is n-shaped, the longitudinal section of the wheel cover supporting plates is L-shaped, the longitudinal section of the rear girder assembly is u-shaped, the rear girder partition plate comprises a first horizontal wall and two first vertical walls, the two first vertical walls are respectively fixed at the left end and the right end of the first horizontal wall, the bottom walls of the two first vertical walls are respectively and fixedly connected with the bottom wall of the rear girder assembly, the front end part and the rear end part of the two first vertical walls are respectively fixed with the front side wall and the rear side wall of the rear girder assembly, a closed partition plate cavity is formed between the inner surface of the two first vertical walls and the lower surface of the first horizontal wall on the rear girder partition plate and the outer surface of the bottom wall and the outer surface of the side wall of the rear girder assembly, and the wheel cover supporting plates comprise second, Third vertical wall and two vertical walls of second, the vertical wall of third is fixed in second horizontal wall upper end, two the vertical wall of second is fixed both ends about the second horizontal wall, third vertical wall upper end surface and the wheel casing inner panel internal surface that corresponds are fixed, two the vertical wall internal surface of second is fixed respectively and is corresponded on the first vertical wall surface, second horizontal wall lower surface with first horizontal wall upper surface is fixed, two on the wheel casing fagging lower extreme surface and corresponding in the vertical wall of third wheel casing inner panel internal surface and form confined fagging cavity between the first horizontal wall surface. Like this, on the one hand, the vertical wall internal surface of the second of the left and right sides on the wheel casing fagging is connected with the first vertical wall surface fixed connection of back girder baffle left and right sides, the first vertical wall diapire of back girder baffle left and right sides respectively with back girder assembly diapire fixed connection, tip is fixed with the front and back lateral wall of back girder assembly respectively around the first vertical wall of back girder baffle left and right sides, increase the tie point of back girder baffle and back girder assembly, thereby increase the tie point of wheel casing fagging and back girder assembly, strengthen joint strength. On the other hand, a partition cavity is formed between the two first vertical walls and the first horizontal wall on the rear girder partition plate and the bottom wall and the side wall of the rear girder assembly, a support plate cavity is formed between the outer surface of the middle lower end of the third vertical wall on the wheel cover support plate and the inner surface of the corresponding wheel cover inner plate and the outer surface of the first horizontal wall, the support plate cavity is positioned at the lower side of the partition cavity, on the X section, the mounting point of the rear suspension is on the same X section with the baffle plate cavity and the supporting plate cavity, therefore, the stress of the X section is larger, the rear crossbeam partition plate and the wheel cover supporting plate form a new supporting frame at the C column, the integral stress capability and the stability of the vehicle body are enhanced, and the clapboard cavity and the supporting plate cavity absorb and disperse a part of force to avoid the stress concentration at the joint of the wheel cover supporting plate and the rear girder assembly, and the transition of the extending surface of the wheel cover supporting plate is simplified, so that the part is easier to form, and the stamping difficulty is greatly reduced. Compared with the prior art, the lower vehicle body rear frame assembly has the advantages that: on the one hand, the connecting points of the wheel cover supporting plates and the rear girder assembly are increased, the connecting strength is enhanced, and on the other hand, stress concentration at the connecting parts of the wheel cover supporting plates and the rear girder assembly is avoided.
Drawings
Fig. 1 is a schematic view of a vehicle-type wheel house support structure of a lower vehicle body rear frame assembly of the prior art.
FIG. 2 is a cross-sectional view of a prior art vehicle-type wheel house support structure of a lower body rear frame assembly.
FIG. 3 is a schematic view of a cross-member lap joint and rear cross-member assembly of a lower body rear frame assembly of the prior art.
FIG. 4 is a schematic view of the wheel cap plate and rear frame spacer arrangement of the inventive lower body rear frame assembly.
FIG. 5 is a schematic view of a continuous cavity arrangement in the inventive lower body rear frame assembly.
Fig. 6 is a partially enlarged view of the area a in fig. 5.
Fig. 7 is a partially enlarged view of region B in fig. 5.
FIG. 8 is a schematic cross-sectional view of a continuous cavity arrangement in the inventive lower body rear frame assembly.
FIG. 9 is a schematic view of the cross beam weld joint configuration in the lower body rear frame assembly of the present invention.
Description of the figures
1 … rear girder clapboard 2 … wheel casing board 3 … rear girder assembly
4 … first vertical wall 5 … first horizontal wall 6 … first flange
7 … second flange 8 … second vertical wall 9 … second horizontal wall
10 … third vertical wall 11 … baffle cavity 12 … gusset cavity
13 … beam lap joint 14 … seat mounting bracket 15 … welding process hole
16 … wheel cover reinforcing plate cavity 17 … beam cavity 18 … side wall cavity
19 … C pillar cavity 20 … roof beam cavity 21 … side wall outer panel
22 … C post reinforcing plate 23 … side wall inner plate 24 … wheel cover outer plate
25 … wheel cover inner plate 26 … wheel cover inner plate reinforcing plate 27 … crossbeam
28 … shock absorber mounting point 29 … suspension spring mounting point 30 … rear floor
Detailed Description
A lower body rear frame assembly of the present invention will be described in further detail with reference to fig. 4 to 9 of the drawings.
The invention relates to a rear frame assembly of a lower vehicle body, which is shown in figures 4 to 9 and comprises a wheel cover support plate 2, a rear girder partition plate 1 and a rear girder assembly 3, wherein the longitudinal section of the rear girder partition plate 1 is n-shaped, the longitudinal section of the wheel cover support plate 2 is L-shaped, the longitudinal section of the rear girder assembly 3 is u-shaped, the rear girder partition plate 1 comprises two first vertical walls 4 and a first horizontal wall 5, the two first vertical walls 4 are respectively fixed at the left end and the right end of the first horizontal wall 5, the bottom walls of the two first vertical walls 4 are respectively fixedly connected with the bottom wall of the rear girder assembly 3, the front end and the rear end of the two first vertical walls 4 are respectively fixed with the front side wall and the rear side wall of the rear girder assembly 3, a partition plate cavity 11 is formed between the inner surfaces of the two first vertical walls 4 and the lower surfaces of the first horizontal wall 5 on the rear girder partition plate 1 and the outer surfaces of the bottom wall and the side wall of the rear girder assembly, wheel casing fagging 2 includes two vertical walls of second 8, second horizontal wall 9 and third vertical wall 10, third vertical wall 10 is fixed in second horizontal wall 9 upper end, two the vertical wall 8 of second is fixed both ends about second horizontal wall 9, third vertical wall 10 upper end surface and the wheel casing inner panel 25 internal surface that corresponds are fixed, two the 8 internal surfaces of second vertical wall are fixed respectively and are corresponded on the 4 external surfaces of first vertical wall, second horizontal wall 9 lower surface with surface mounting on the 5 first horizontal wall, two on the wheel casing fagging 2 lower extreme surface and corresponding in the vertical wall 10 of third wheel casing inner panel 25 internal surface and form fagging cavity 12 between the 5 external surfaces of first horizontal wall. Particularly, on the one hand, 8 internal surfaces of the second vertical wall of the left and right sides on wheel casing fagging 2 and the first vertical wall 4 surface fixed connection of the back girder baffle 1 left and right sides, the first vertical wall 4 diapire of the back girder baffle 1 left and right sides respectively with 3 diapire fixed connection of back girder assembly, tip is fixed with the front and back lateral wall of back girder assembly 3 respectively around the first vertical wall 4 of the 1 left and right sides of back girder baffle, increase the tie point of back girder baffle 1 and back girder assembly 3, thereby increase the tie point of wheel casing fagging 2 and back girder assembly 3, strengthen joint strength. On the other hand, a closed partition cavity 11 is formed between the bottom wall and the side wall of the rear girder assembly 3 and the first horizontal wall 5 and the two first vertical walls 4 and the first horizontal wall 4 on the rear girder partition plate 1, a closed supporting plate cavity 12 is formed between the outer surface of the lower end of the third vertical wall 10 on the wheel cover supporting plate 2 and the inner surface of the corresponding wheel cover inner plate 25 and the outer surface of the first horizontal wall 5, the supporting plate cavity 12 is positioned at the lower side of the partition cavity 11, on the X section, the mounting point of the rear suspension is on the same X section with the partition cavity 11 and the supporting plate cavity 12, therefore, the stress on the X section is larger, the rear girder partition plate 1 and the wheel cover supporting plate 2 form a new supporting frame on the C column, the integral stress capability and the stability of the vehicle body are enhanced, and the partition cavity 11 and the supporting plate cavity 12 absorb and disperse a part of force to avoid the stress concentration at the connection part of the wheel cover supporting plate 2, the part is easier to form, and the stamping difficulty is greatly reduced. Compared with the prior art, the advantages are as follows: increase the tie point of wheel casing fagging 2 and back girder assembly 3 on the one hand, strengthen joint strength, on the other hand avoids wheel casing fagging 2 and back girder assembly 3 junction atress to concentrate.
Referring to fig. 4 to 9, the lower body rear frame assembly of the present invention may further include: two 4 diapalls of first vertical wall are equipped with the first turn-ups 6 of outside extension respectively, two tip is equipped with the second turn-ups 7 of outside extension respectively around the first vertical wall 4, two 4 diapalls of first vertical wall respectively through corresponding first turn-ups 6 with back girder assembly 3 diapalls fixed connection, two tip is respectively through corresponding second turn-ups 7 with back girder assembly 3 around the first vertical wall 4 lateral wall fixed connection. Like this, two 4 diapalls of first vertical wall respectively through corresponding first turn-ups 6 with 3 diapalls fixed connection of back girder assembly, through first turn-ups 6 increase with the connection area of 3 diapalls of back girder assembly, further strengthen joint strength, two tip around the first vertical wall 4 respectively through corresponding second turn-ups 7 with lateral wall fixed connection around the back girder assembly 3, through the second turn-ups 7 increase with the back girder front and back lateral wall the connection area, further strengthen joint strength.
Referring to fig. 4 to 9, the lower body rear frame assembly of the present invention may further include: two 4 diapalls of first vertical wall respectively with 3 diapalls of back girder assembly pass through resistance welding formula welded fastening, the 9 lower surfaces of second horizontal wall pass through resistance welding formula with 5 upper surface fixings of first horizontal wall, two tip respectively with the front and back lateral wall of back girder assembly 3 passes through resistance welding formula welded fastening and is connected around the first vertical wall 4. Like this, earlier with two vertical walls 4 of the vertical wall of second and the horizontal wall 9 of second on the vertical wall of two 4 and the first horizontal wall 5 on back girder baffle 1 and the wheel casing fagging 2 that corresponds form a little assembly through resistance welding formula welded fastening, again with the vertical wall of second 8 and the back girder assembly 3 of the left and right ends of back girder baffle 1 through resistance welding formula welded fastening, the diapire and the lateral wall of guaranteeing back girder baffle 1 and back girder assembly 3 all have welded connection, thereby guarantee that the diapire and the lateral wall of wheel casing fagging 2 and back girder assembly 3 all have welded connection.
Referring to fig. 4 to 9, the lower body rear frame assembly of the present invention may further include: rear girder assembly 3 is fixed with crossbeam lap joint 13, crossbeam lap joint 13 is equipped with seat installing support 14, seat installing support 14 with rear girder assembly 3 horizontal distance is greater than 40 mm. Thus, as shown in fig. 9, the horizontal distance between the seat mounting bracket 14 and the rear girder assembly 3 is greater than 40mm, and a welding space is reserved between the seat mounting bracket 14 and the rear girder assembly 3, so that a welding gun can enter the welding space for welding. On the basis of the above technical scheme, the further preferable technical scheme is as follows: the bottom of the cross beam lap joint 13 is provided with a welding process hole 15, and the welding process hole 15 is positioned between the seat mounting bracket 14 and the rear girder assembly 3. Thus, when the welding gun is ensured to enter the welding space for welding, the welding spots of the wheel casing supporting plate 2, the rear girder assembly 3 and the rear floor 30 are ensured through the welding process hole 15.
Referring to fig. 4 to 9, the lower body rear frame assembly of the present invention may further include: the utility model discloses a wheel casing, including fagging cavity 12, baffle cavity 11, wheel casing reinforcing plate cavity 18, C post cavity 19, the left side of fagging cavity 12 and baffle cavity 11 is wheel casing reinforcing plate cavity 16, baffle cavity 11 right side is crossbeam cavity 17, wheel casing reinforcing plate cavity 16 upside is side wall cavity 18 and C post cavity 19, side wall cavity 18 upside and C post cavity 19 upside are top cap crossbeam cavity 20. Thus, as shown in fig. 8, the wheel house reinforcing plate cavity 16, the beam cavity 17, the side wall cavity 18, the C-pillar cavity 19, the top cover beam cavity 20, the supporting plate cavity 12 and the beam cavity 17 are arranged on the same cross section in the X direction, which accords with the principle of cooperative stress of the whole vehicle body, and the main stress points of the vehicle body are a shock absorber and a spring, the lower side of the partition plate cavity 11 is provided with a suspension spring mounting point 29 for mounting the spring, the outer side of the wheel house reinforcing plate cavity 16 is provided with a shock absorber mounting point 28 for mounting the shock absorber, and the suspension spring mounting point 29 and the shock absorber mounting point 28 are in the same plane with the wheel house supporting plate 2 and the rear beam partition plate 1, which. On the basis of the technical scheme described above, the method can also comprise the following steps: the side wall cavity 18, the top cover beam cavity 20, the C-pillar cavity 19, the wheel guard reinforcing plate cavity 16, the wheel guard cavity, the partition plate cavity 11 and the beam cavity 17 form a continuous cavity assembly. Like this, top cap crossbeam cavity 20, side wall cavity 18, C post cavity 19, wheel casing reinforcing plate cavity 16, wheel casing cavity, baffle cavity 11 and crossbeam cavity 17 form continuous cavity assembly, and when taking place the load atress, guarantee that the load transmission route is smooth and easy, the load is by effectual absorption and dispersion, effectively avoids the atress to concentrate, has obtained very big improvement on mechanical properties, has promoted the atress ability of automobile body greatly, has strengthened the whole atress ability and the stability of automobile body. On the basis of the technical scheme described above, the method can also comprise the following steps: the side wall cavity 18 is composed of a side wall outer plate 21, a C-column reinforcing plate 22 and a wheel cover outer plate 24. Thus, as shown in fig. 8, the side wall cavity 18 is composed of a side wall outer plate 21, a C-pillar reinforcement plate 22 and a wheel cover outer plate 24 to form a force transmission structural frame of the left upper part of the lower vehicle body. The further preferable technical scheme on the basis of the technical scheme described above is as follows: the C-pillar cavity 19 is composed of a C-pillar reinforcing plate 22, a side wall inner plate 23 and a wheel cover outer plate 24. Thus, as shown in fig. 8, the force transmission structural frame of the C-pillar cavity 19, which is formed by the C-pillar reinforcement plate 22, the side-wall inner plate 23 and the wheel cover outer plate 24, is arranged at the upper right part of the lower vehicle body, and forms a continuous force transmission supporting frame with the force transmission structural frame on the side-wall cavity 18. The further preferable technical scheme on the basis of the technical scheme described above is as follows: the wheel house reinforcement cavity 16 is composed of a wheel house inner panel 25 and a wheel house inner panel reinforcement 26. Thus, the wheel cover reinforcing plate cavity 16 is a force transmission structure frame of the middle part of the lower vehicle body formed by the wheel cover inner plate 25 and the wheel cover inner plate reinforcing plate 26, the upper part of the wheel cover reinforcing plate cavity 16 and the C-column cavity 19 form a continuous force transmission supporting frame, the supporting plate cavity 12 is formed by the outer surface of the lower end of the third vertical wall 10 on the wheel cover supporting plate 2, the inner surface of the corresponding wheel cover inner plate 25 and the outer surface of the first horizontal wall 5 of the rear girder partition plate 1, the partition plate cavity 11 is formed by two of the rear girder partition plate 1, the first vertical wall 4 and the first horizontal wall 5 are formed by the bottom wall and the side wall of the rear girder assembly 3, the beam cavity 17 is formed by the beam 27 and the rear floor 30, and the lower part of the wheel cover reinforcing plate cavity 16, the supporting plate cavity 12 and the partition plate. The further preferable technical scheme on the basis of the technical scheme described above is as follows: the beam cavity 17 is composed of a beam 27 and a rear floor 30. Thus, the beam cavity 17 is framed by the beam 27 and the rear floor 30 to form a force transfer structure at the rear of the lower body. And form the continuous force transmission braced frame with the baffle cavity 11, it is firm to form the main force transmission structure by the side wall planking 21, C post reinforcing plate 22, side wall inner panel 23, wheel casing planking 24, wheel casing inner panel 25, wheel casing inner panel reinforcing plate 26, wheel casing fagging 2, back girder baffle 1, crossbeam 27 and back floor 30, and link several cavities together through the mutual fixation of the main force transmission structure, form the new braced frame, this braced frame is connected with the tail-gate frame through the back girder again, have improved the stability of the whole rear vehicle body.
The above description is only for the purpose of illustrating a few embodiments of the present invention, and should not be taken as limiting the scope of the present invention, in which equivalent changes, modifications, or scaling up or down, etc. made in accordance with the spirit of the present invention should be considered as falling within the scope of the present invention.
Claims (10)
1. A lower body rear frame assembly characterized by: including wheel casing fagging (2), back girder baffle (1) and back girder assembly (3), back girder baffle (1) longitudinal section is n shape, wheel casing fagging (2) longitudinal section is L shape, back girder assembly (3) longitudinal section is u shape, back girder baffle (1) includes first horizontal wall (5) and two first vertical walls (4), two first vertical wall (4) are fixed respectively both ends are controlled in first horizontal wall (5), two first vertical wall (4) diapire respectively with back girder assembly (3) diapire fixed connection, two tip around first vertical wall (4) respectively with the lateral wall is fixed around back girder assembly (3), two on back girder baffle (1) first vertical wall (4) internal surface with first horizontal wall (5) lower surface with form confined baffle chamber between back girder assembly (3) diapire surface and the lateral wall surface A body (11), the wheel house support plate (2) comprising a second horizontal wall (9), a third vertical wall (10) and two second vertical walls (8), the third vertical wall (10) is fixed at the upper end of the second horizontal wall (9), the two second vertical walls (8) are fixed at the left end and the right end of the second horizontal wall (9), the outer surface of the upper end of the third vertical wall (10) is fixed with the inner surface of the corresponding wheel cover inner plate (25), the inner surfaces of the two second vertical walls (8) are respectively fixed on the outer surfaces of the corresponding first vertical walls (4), the lower surface of the second horizontal wall (9) is fixed with the upper surface of the first horizontal wall (5), and a closed supporting plate cavity (12) is formed between the outer surface of the middle lower end of each of the two third vertical walls (10) on the wheel cover supporting plate (2) and the corresponding inner surface of the wheel cover inner plate (25) and the outer surface of the first horizontal wall (5).
2. The lower body rear frame assembly of claim 1, wherein: two first vertical wall (4) diapire is equipped with first turn-ups (6) of outside extension respectively, two tip is equipped with outside second turn-ups (7) of extending respectively around first vertical wall (4), two first vertical wall (4) diapire respectively through corresponding first turn-ups (6) with back girder assembly (3) diapire fixed connection, two tip is respectively through corresponding second turn-ups (7) with back girder assembly (3) front and back lateral wall fixed connection around first vertical wall (4).
3. The lower body rear frame assembly of claim 1, wherein: two first vertical wall (4) diapire respectively with back girder assembly (3) diapire passes through resistance welding formula welded fastening, second horizontal wall (9) lower surface pass through resistance welding formula with first horizontal wall (5) upper surface fixed, two tip around first vertical wall (4) respectively with the front and back lateral wall of back girder assembly (3) passes through resistance welding formula welded fastening and is connected.
4. The lower body rear frame assembly according to any one of claims 1 to 3, wherein: rear girder assembly (3) are fixed with crossbeam lap joint (13), crossbeam lap joint (13) are equipped with seat installing support (14), seat installing support (14) with rear girder assembly (3) horizontal distance is greater than 40 mm.
5. The lower body rear frame assembly of claim 4, wherein: the bottom of the cross beam lap joint (13) is provided with a welding process hole (15), and the welding process hole (15) is positioned between the seat mounting bracket (14) and the rear girder assembly (3).
6. The lower body rear frame assembly according to any one of claims 1 to 3, wherein: the utility model discloses a wheel guard reinforcing plate, including fagging cavity (12) and baffle cavity (11), be wheel guard reinforcing plate cavity (16) on the left side of fagging cavity (12) and baffle cavity (11), baffle cavity (11) right side is crossbeam cavity (17), wheel guard reinforcing plate cavity (16) upside is side wall cavity (18) and C post cavity (19), side wall cavity (18) upside and C post cavity (19) upside are top cap crossbeam cavity (20).
7. The lower body rear frame assembly of claim 6, wherein: the top cover beam cavity (20), the side wall cavity (18), the C column cavity (19), the wheel cover reinforcing plate cavity (16), the wheel cover cavity, the partition plate cavity (11) and the beam cavity (17) form a continuous cavity assembly.
8. The lower body rear frame assembly of claim 7, wherein: the side wall cavity is composed of a side wall outer plate (21), a C-column reinforcing plate (22) and a wheel cover outer plate (24).
9. The lower body rear frame assembly of claim 8, wherein: the C-pillar cavity is composed of a C-pillar reinforcing plate (22), a side wall inner plate (23) and a wheel cover outer plate (24).
10. A lower body rear frame assembly according to claim 9, wherein: the beam cavity (17) is composed of a beam (27) and a rear floor (30).
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| CN201811148024.6A CN110962942B (en) | 2018-09-29 | 2018-09-29 | Lower automobile body rear frame subassembly |
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| CN201811148024.6A CN110962942B (en) | 2018-09-29 | 2018-09-29 | Lower automobile body rear frame subassembly |
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| CN110962942B (en) | 2024-07-23 |
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