CN209208880U - Automobile lower body structure and automobile - Google Patents

Automobile lower body structure and automobile Download PDF

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Publication number
CN209208880U
CN209208880U CN201822076962.1U CN201822076962U CN209208880U CN 209208880 U CN209208880 U CN 209208880U CN 201822076962 U CN201822076962 U CN 201822076962U CN 209208880 U CN209208880 U CN 209208880U
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China
Prior art keywords
back seat
middle channel
body structure
lower body
fixed
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CN201822076962.1U
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Chinese (zh)
Inventor
刘景民
乐雪胜
孙东洋
钟建强
罗培锋
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Guangzhou Automobile Group Co Ltd
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Guangzhou Automobile Group Co Ltd
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Abstract

The utility model belongs to body shell technical field more particularly to a kind of automobile lower body structure and automobile.The automobile lower body structure, including left-hand door sill, right threshold, middle channel, left rear longitudinal beam, right floor side member and back seat front beam, the front end of the left rear longitudinal beam is fixed on the rear end of the left-hand door sill, the front end of the right floor side member is fixed on the rear end of the right threshold, the left end of the back seat front beam is fixed on the front end of the left rear longitudinal beam, the right end of the back seat front beam is fixed on the front end of the right floor side member, the rear end in the middle channel is fixed on the middle part of the back seat front beam, the left-hand door sill, right threshold, middle channel, left rear longitudinal beam, right floor side member and back seat front beam are Al-alloy parts.The automobile lower body structure, with few, the light-weight and at low cost advantage of number of parts, is conducive to automotive light weight technology and improves vehicle fuel economy relative to traditional steel body.

Description

Automobile lower body structure and automobile
Technical field
The utility model belongs to body shell technical field more particularly to a kind of automobile lower body structure and automobile.
Background technique
During Vehicle Body Development, preceding floor and rear floor lap-joint are vital positions.Bridging arrangement is related to The performances such as collision safety, vehicle bending rigidity and riding comfort.Therefore, good preceding floor assembly and rear floor assembly are taken Binding structure needs not only to can guarantee vehicle bending rigidity and properties, but also can improve the riding comfort of member.
Traditional steel body often uses valuableness to meet performances, the thresholds such as collision safety, vehicle bending and mode Thermoforming part, middle channel and rear floor assembly lap-joint, middle channel and back seat front beam require to reinforce using stiffening plate.
In addition, traditional steel body, preceding floor and rear floor bridging arrangement generally use 5 vertical 1 horizontal structures, a 5 vertical i.e. left sides Stringer, middle channel under right threshold and floor side member overlap joint, the preceding floor in left and right, 1 is horizontal for back seat front beam.This structure can guarantee The rigidity and bending performance of vehicle, but there is a problem of that part is more, weight is heavy and at high cost.
In addition, the die cost of metal plate punching part is higher, middle channel is designed to meet rigidity with rear floor lap-joint It is very high, man-machine arrangement is influenced, the riding comfort of passenger among heel row is influenced.And since lap-joint is excessive, NVH performance is influenced.
Utility model content
The technical problem to be solved by the utility model is to that there are parts is more, weight is weighed for traditional steel body and Problem at high cost provides a kind of automobile lower body structure and automobile.
In order to solve the above technical problems, on the one hand, the utility model embodiment provides a kind of automobile lower body structure, wrap Include left-hand door sill, right threshold, middle channel, left rear longitudinal beam, right floor side member and back seat front beam, the left-hand door sill, right threshold, in lead to Road, left rear longitudinal beam and right floor side member extend along automobile front-rear direction, and the back seat front beam extends along vehicle right and left direction, institute The front end for stating left rear longitudinal beam is fixed on the rear end of the left-hand door sill, after the front end of the right floor side member is fixed on the right threshold End, the left end of the back seat front beam are fixed on the front end of the left rear longitudinal beam, and the right end of the back seat front beam is fixed In the front end of the right floor side member, the rear end in the middle channel is fixed on the middle part of the back seat front beam.
Optionally, it is provided with the left side connecting plate being fixedly connected with the left-hand door sill on the left of the front end of the left rear longitudinal beam, The left side connecting plate surrounds and is bonded upper surface, right lateral surface and the lower surface of the left-hand door sill.
Optionally, it is provided with the right side connecting plate being fixedly connected with the right threshold on the right side of the front end of the right floor side member, The right side connecting plate surrounds and is bonded upper surface, left-hand face and the lower surface of the right threshold.
Optionally, left side faying surface, the left end of the back seat front beam are provided on the right side of the front end of the left rear longitudinal beam Overlap joint is fixed on the left side faying surface.
Optionally, right side faying surface, the right end of the back seat front beam are provided on the left of the front end of the right floor side member Overlap joint is fixed on the right side faying surface.
Optionally, the front side bottom of the back seat front beam is provided with horizontal overlap edge, and the rear end in the middle channel is taken It connects and is fixed on the horizontal overlap edge.
Optionally, the rear end in the middle channel is bolted on the horizontal overlap edge.
Optionally, the middle channel includes the middle channel body with closed cross-section, is connected to the middle channel body The left connection of left bottom while and when being connected to the right connection of bottom right side of the middle channel body, the closing in the middle channel Section is in flat trapezoidal.
Optionally, the left-hand door sill, right threshold, middle channel, left rear longitudinal beam, right floor side member and back seat front beam are aluminium Alloy components.
On the other hand, the utility model embodiment additionally provides a kind of automobile, including above-mentioned automobile lower body structure.
According to automobile lower body structure provided by the embodiment of the utility model and automobile, left-hand door sill, right threshold, in lead to Road, left rear longitudinal beam and right floor side member extend along automobile front-rear direction, and back seat front beam extends along vehicle right and left direction, left back vertical The front end of beam is fixed on the rear end of left-hand door sill, and the front end of right floor side member is fixed on the rear end of right threshold, a left side for back seat front beam End is fixed on the front end of left rear longitudinal beam, and the right end of back seat front beam is fixed on the front end of right floor side member, and the rear end in middle channel is solid It is scheduled on the middle part of the back seat front beam.Compared with the existing technology, reduce stringer under the preceding floor in left and right, form 3 vertical 1 cross " mountain " character form structure.Also, left-hand door sill, right threshold, middle channel, left rear longitudinal beam, right floor side member and back seat front beam are Al-alloy parts.In this way, with few, the light-weight and at low cost advantage of number of parts, being conducive to relative to traditional steel body Automotive light weight technology and raising vehicle fuel economy.The automobile lower body structure provides a kind of safe and stable preceding floor The frame bridging arrangement of assembly and rear floor assembly.In addition, the automobile lower body structure can guarantee vehicle bending rigidity Can, it is more comfortable that good Modal Performances take passenger.
In addition, the overlapping part of the automobile lower body structure is less, man-machine performance is improved, improves the ride comfort of member Property.
Detailed description of the invention
Fig. 1 is the schematic diagram for the automobile lower body structure that an embodiment of the present invention provides;
Fig. 2 is the schematic diagram of left stringer;
Fig. 3 is the schematic diagram of right vertical beam;
Fig. 4 is the schematic diagram of left-hand door sill;
Fig. 5 is the schematic diagram in middle channel;
Fig. 6 is the schematic cross-section in middle channel;
Fig. 7 is the schematic diagram of back seat front beam;
Fig. 8 is the connection schematic diagram in middle channel Yu back seat front beam;
Fig. 9 is the overlap joint schematic diagram of left rear longitudinal beam Yu left-hand door sill;
Figure 10 is the overlap joint schematic diagram of right floor side member Yu right threshold.
Appended drawing reference in specification is as follows:
1, left-hand door sill;11, netted reinforcing rib;2, right threshold;21, netted reinforcing rib;3, middle channel;31, middle channel body; 32, left connection side;33, right connection side;34, reinforcing rib;4, left rear longitudinal beam;41, left side connecting plate;42, left side faying surface;5, right Floor side member;51, right side connecting plate;52, right side faying surface;6, back seat front beam;61, horizontal overlap edge;7, bolt.
Specific embodiment
The technical issues of in order to keep the utility model solved, technical solution and beneficial effect are more clearly understood, below In conjunction with accompanying drawings and embodiments, the utility model is described in further detail.It should be appreciated that specific reality described herein It applies example to be only used to explain the utility model, is not used to limit the utility model.
Hereinafter, front and rear, left and right, be up and down it is conventional understand orientation, referring to shown in Fig. 1 arrow.
As shown in Figures 1 to 10, an embodiment of the present invention provides a kind of automobile lower body structure, including left-hand door Sill 1, right threshold 2, middle channel 3, left rear longitudinal beam 4, right floor side member 5 and back seat front beam 6, the left-hand door sill 1, right threshold 2, in Channel 3, left rear longitudinal beam 4 and right floor side member 5 extend along automobile front-rear direction, and the back seat front beam 6 is along vehicle right and left direction Extend, the front end of the left rear longitudinal beam 4 is fixed on the rear end of the left-hand door sill 1, and the front end of the right floor side member 5 is fixed on described The rear end of right threshold 2, the left end of the back seat front beam 6 are fixed on the front end of the left rear longitudinal beam 4, cross before the back seat The right end of beam 6 is fixed on the front end of the right floor side member 5, and the rear end in the middle channel 3 is fixed on the back seat front beam 6 Middle part.
The left-hand door sill 1, right threshold 2, middle channel 3, left rear longitudinal beam 4, right floor side member 5 and back seat front beam 6 are aluminium Alloy components.It is light to be conducive to automobile with few, the light-weight and at low cost advantage of number of parts relative to traditional steel body Quantization.
Preferably, the left-hand door sill 1, right threshold 2, middle channel 3 and back seat front beam 6 are aluminium alloy extruded part, institute It states left rear longitudinal beam 4 and right floor side member 5 is aluminium alloy cast member.The die cost of aluminium alloy extruded part and aluminium alloy cast member is relatively rushed Compression mould cost substantially reduces.
Each component passes through riveting and/or is bolted to be formed for preceding floor assembly and the installation of rear floor assembly between each other Lap joint frame structure.Riveting can be from the one or two kinds of combinations for wearing riveting and rotation tapping riveting.
As shown in Fig. 1, Fig. 7 and Fig. 8, the front side bottom of the back seat front beam 6 is provided with horizontal overlap edge 61, described The rear end in middle channel 3 is fixed on the horizontal overlap edge 61 by the overlap joint of bolt 7.
As shown in fig. 6, the middle channel 3 includes the middle channel body 31 with closed cross-section, is connected to the middle channel The left connection of the left bottom of main body 31 while 32 and be connected to the middle channel body 31 bottom right side right connection while 33, institute The closed cross-section in middle channel 3 is stated in flat trapezoidal.In this way, middle 3 back segment Z-direction (short transverse) of channel is very low to be met Vehicle bending performance not only saves material, save the cost, also increases the riding comfort of rear passenger.Middle channel body 31 Vertical reinforcing rib 34 is formed in closed cross-section, with the integral strength in channel 3 in raising.
As shown in Fig. 2 and Fig. 9, the left side being fixedly connected with the left-hand door sill 1 is provided on the left of the front end of the left rear longitudinal beam 4 Side connecting plate 41, the left side connecting plate 41 surround and are bonded upper surface, right lateral surface and the lower surface of the left-hand door sill 1.This Sample, the left rear longitudinal beam 4 form three sides surrounded overlapping mode with left-hand door sill 1.It is formed in the closed cross-section of left-hand door sill 1 netted Reinforcing rib 11, to improve the integral strength of left-hand door sill 1.
As shown in Fig. 3 and Figure 10, it is provided on the right side of the front end of the right floor side member 5 and is fixedly connected with the right threshold 2 Right side connecting plate 51, the right side connecting plate 51 surround and are bonded upper surface, left-hand face and the lower surface of the right threshold 2. In this way, the right floor side member 5 forms three sides surrounded overlapping mode with right threshold 2.Net is formed in the closed cross-section of right threshold 2 Shape reinforcing rib 21, to improve the integral strength of right threshold 2.
The fixed form that middle channel 3 is connected by screw bolts with back seat front beam 6, left-hand door sill 1 and left rear longitudinal beam 4 use three The overlapping mode that bread encloses, right threshold 2 uses three sides surrounded overlapping mode with right floor side member 5, so that underbody structure is more Add stabilization, vehicle bending performance is more preferable, and Modal Performances are more preferable.
As shown in Fig. 2, being provided with left side faying surface 42 on the right side of the front end of the left rear longitudinal beam 4.The back seat front beam 6 Left end overlap joint be fixed on the left side faying surface 42.
As shown in figure 3, being provided with right side faying surface 52 on the left of the front end of the right floor side member 5.The back seat front beam 6 Right end overlap joint be fixed on the right side faying surface 52.
In addition, an embodiment of the present invention additionally provides a kind of automobile comprising the automobile lower vehicle of above-described embodiment Body structure.
According to automobile lower body structure provided by the embodiment of the utility model and automobile, left-hand door sill 1, right threshold 2, in lead to Road 3, left rear longitudinal beam 4 and right floor side member 5 extend along automobile front-rear direction, and back seat front beam 6 extends along vehicle right and left direction, left The front end of floor side member 4 is fixed on the rear end of left-hand door sill 1, and the front end of right floor side member 5 is fixed on the rear end of right threshold 2, before back seat The left end of crossbeam 6 is fixed on the front end of left rear longitudinal beam 4, and the right end of back seat front beam 6 is fixed on the front end of right floor side member 5, in The rear end in channel 3 is fixed on the middle part of the back seat front beam 6.Compared with the existing technology, reduce and indulged under the preceding floor in left and right Beam forms 3 vertical 1 horizontal " mountain " character form structures.Also, left-hand door sill 1, right threshold 2, middle channel 3, left rear longitudinal beam 4, right floor side member 5 and back seat front beam 6 be Al-alloy parts.In this way, having number of parts few, light-weight relative to traditional steel body And advantage at low cost, be conducive to automotive light weight technology and improve vehicle fuel economy.The automobile lower body structure provides A kind of frame bridging arrangement of safe and stable preceding floor assembly and rear floor assembly.In addition, the automobile lower body structure energy Enough guarantee vehicle bending rigidity property, it is more comfortable that good Modal Performances take passenger.
In addition, the overlapping part of the automobile lower body structure is less, man-machine performance is improved, improves the ride comfort of member Property.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. a kind of automobile lower body structure, which is characterized in that behind left-hand door sill, right threshold, middle channel, left rear longitudinal beam, the right side Stringer and back seat front beam, the left-hand door sill, right threshold, middle channel, left rear longitudinal beam and right floor side member are along automobile front-rear direction Extend, the back seat front beam extends along vehicle right and left direction, and the front end of the left rear longitudinal beam is fixed on the left-hand door sill Rear end, the front end of the right floor side member are fixed on the rear end of the right threshold, and the left end of the back seat front beam is fixed on institute The front end of left rear longitudinal beam is stated, the right end of the back seat front beam is fixed on the front end of the right floor side member, the middle channel Rear end is fixed on the middle part of the back seat front beam, the left-hand door sill, right threshold, middle channel, left rear longitudinal beam, right floor side member and Back seat front beam is Al-alloy parts.
2. automobile lower body structure according to claim 1, which is characterized in that set on the left of the front end of the left rear longitudinal beam It is equipped with the left side connecting plate being fixedly connected with the left-hand door sill, the left side connecting plate surrounds and is bonded the upper table of the left-hand door sill Face, right lateral surface and lower surface.
3. automobile lower body structure according to claim 1 or 2, which is characterized in that the front end of the right floor side member is right Side is provided with the right side connecting plate being fixedly connected with the right threshold, and the right side connecting plate surrounds and is bonded the right threshold Upper surface, left-hand face and lower surface.
4. automobile lower body structure according to claim 1, which is characterized in that set on the right side of the front end of the left rear longitudinal beam It is equipped with left side faying surface, the left end overlap joint of the back seat front beam is fixed on the left side faying surface.
5. automobile lower body structure according to claim 1 or 4, which is characterized in that the front end of the right floor side member is left Side is provided with right side faying surface, and the right end overlap joint of the back seat front beam is fixed on the right side faying surface.
6. automobile lower body structure according to claim 1, which is characterized in that the front side bottom of the back seat front beam Portion is provided with horizontal overlap edge, and the rear end overlap joint in the middle channel is fixed on the horizontal overlap edge.
7. automobile lower body structure according to claim 6, which is characterized in that the rear end in the middle channel passes through bolt It is connected on the horizontal overlap edge.
8. automobile lower body structure according to claim 1, which is characterized in that the middle channel includes that there is closing to cut The middle channel body in face, be connected to the middle channel body left bottom left connection side and be connected to the middle channel body Bottom right side right connection side, the closed cross-section in the middle channel is in flat trapezoidal.
9. automobile lower body structure according to claim 1, which is characterized in that the left-hand door sill, right threshold, middle channel And back seat front beam is aluminium alloy extruded part, the left rear longitudinal beam and right floor side member are aluminium alloy cast member.
10. a kind of automobile, which is characterized in that including automobile lower body structure described in any one of claim 1-9.
CN201822076962.1U 2018-12-11 2018-12-11 Automobile lower body structure and automobile Active CN209208880U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822076962.1U CN209208880U (en) 2018-12-11 2018-12-11 Automobile lower body structure and automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822076962.1U CN209208880U (en) 2018-12-11 2018-12-11 Automobile lower body structure and automobile

Publications (1)

Publication Number Publication Date
CN209208880U true CN209208880U (en) 2019-08-06

Family

ID=67464068

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201822076962.1U Active CN209208880U (en) 2018-12-11 2018-12-11 Automobile lower body structure and automobile

Country Status (1)

Country Link
CN (1) CN209208880U (en)

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