CN109204474A - A kind of automobile rear longitudinal girder assembly and automobile - Google Patents
A kind of automobile rear longitudinal girder assembly and automobile Download PDFInfo
- Publication number
- CN109204474A CN109204474A CN201811330212.0A CN201811330212A CN109204474A CN 109204474 A CN109204474 A CN 109204474A CN 201811330212 A CN201811330212 A CN 201811330212A CN 109204474 A CN109204474 A CN 109204474A
- Authority
- CN
- China
- Prior art keywords
- longitudinal beam
- rear longitudinal
- automobile
- side member
- floor side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 24
- 238000005266 casting Methods 0.000 claims abstract description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 6
- 238000005452 bending Methods 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 238000000465 moulding Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 abstract description 5
- 238000003754 machining Methods 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000013011 mating Effects 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000116 mitigating effect Effects 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/008—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of light alloys, e.g. extruded
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
本发明公开了一种汽车后纵梁总成，包括后纵梁，后纵梁为一体成型结构，后纵梁包括后纵梁前段、后纵梁中段和后纵梁后段，后纵梁中段设置在后纵梁前段与后纵梁后段之间，后纵梁前段的端部与前纵梁连接，后纵梁后段的端部与后保横梁连接。后纵梁整体呈阶梯状，后纵梁整体为铝合金铸造成型，并采用高压铸造工艺成型。后纵梁的内部设有加强筋Ⅲ，加强筋Ⅲ为X型或V型，加强筋Ⅲ之间彼此连接构成网状结构，加强筋Ⅲ的设置提高了后纵梁的结构强度。本发明的后纵梁具有重量轻、集成性高、安装精度高、强度高、安全性能好等优点。后纵梁为一体成型结构，在减少零件用量的同时，可省去多个零件间的焊接工序，从而提高零件的加工精度及装配精度。
The invention discloses an automobile rear longitudinal beam assembly, which comprises a rear longitudinal beam, the rear longitudinal beam is an integrally formed structure, and the rear longitudinal beam comprises a front section of the rear longitudinal beam, a middle section of the rear longitudinal beam, a rear section of the rear longitudinal beam, and a middle section of the rear longitudinal beam. It is arranged between the front section of the rear longitudinal beam and the rear section of the rear longitudinal beam. The overall rear longitudinal beam is stepped, and the entire rear longitudinal beam is formed by aluminum alloy casting and is formed by high-pressure casting process. The interior of the rear longitudinal beam is provided with a reinforcing rib III, which is an X-shaped or a V-shaped. The reinforcing ribs III are connected to each other to form a network structure, and the arrangement of the reinforcing ribs III improves the structural strength of the rear longitudinal beam. The rear longitudinal beam of the invention has the advantages of light weight, high integration, high installation precision, high strength, good safety performance and the like. The rear longitudinal beam is an integral molding structure, which can save the welding process between multiple parts while reducing the amount of parts, thereby improving the machining accuracy and assembly accuracy of the parts.
Description
Technical field
The invention belongs to technical field of automobile parts, are related to the Lightweight Technology of chassis runner, and in particular to a kind of vapour
Vehicle floor side member assembly and automobile.
Background technique
Vehicle body floor side member plays important carrying and is absorbed in vehicle structure as one of body of a motor car key part
Collision impact effect.Since floor side member overall structure is longer, floor side member leading portion and floor side member back segment two parts are generally divided into, due to
Floor side member needs rationally to avoid and install with other components, therefore the global shape of floor side member is more complex, after common at present
Stringer mostly uses steel stamping part to be welded, but this steel plate punched structure has the disadvantage that
1, the floor side member being made of multiple steel stamping parts need to increase welding sequence, reduce size installation accuracy, increase
Bodywork gap brings resonance noise.
2, the floor side member being welded by multiple steel stamping parts, to realize with chassis and the isostructural connection of vehicle body, must
The parts such as corresponding mounting plate, erection support must be cooperated, therefore the quantity of part increases, process increases, while being unfavorable for vehicle
Loss of weight.
3, segmented floor side member need to additionally increase the connection process of floor side member leading portion and back segment, increase additional workload, together
When it is unfavorable to integral strength.
Summary of the invention
For the deficiencies in the prior art, the purpose of the present invention is to provide a kind of automobile rear longitudinal girder assembly and vapour
Vehicle, the automobile rear longitudinal girder assembly are an integral molding structure, are designed by integrated form, can effectively reduce periphery mating number of parts,
The welding sequence between multiple parts is saved, to improve the machining accuracy and assembly precision of part.
To achieve the above object, the technical solution of the present invention is as follows: a kind of automobile rear longitudinal girder assembly, including floor side member, it is described
Floor side member is an integral molding structure, and floor side member includes floor side member leading portion, floor side member middle section and floor side member back segment, in the floor side member
Section is arranged between floor side member leading portion and floor side member back segment, and the end of floor side member leading portion is connect with front longitudinal beam, floor side member back segment
End is connect with rear crossbeam of protecting.
Further, the floor side member is integrally stepped, floor side member generally aluminium alloy casting and forming, and uses high pressure
Casting technique molding.
Further, the side of the floor side member leading portion is equipped with the interconnecting piece I for connecting with threshold side bar, vertical after described
The other side of beam leading portion is equipped with the interconnecting piece II for connecting with rear floor front beam.
Further, the interconnecting piece I is U-shaped shell structure, and the interconnecting piece II is bending structure, interconnecting piece I and company
Flange I is equipped in socket part II.
Further, the floor side member middle section is equipped with the rear spring fastening for shock mitigation system after installation chassis, described
Spring fastening is groove structure afterwards, and the inside of groove structure is equipped with reinforcing rib I.
Further, the interconnecting piece III for connecting with rear floor middle and connection are additionally provided on the floor side member middle section
Portion IV, the interconnecting piece III are the U-type groove structure extended to the side in floor side member middle section.
Further, the interconnecting piece IV is the shell structure to raise upward, the boundary of interconnecting piece IV and floor side member middle section
Place is equipped with reinforcing rib II.
Further, the floor side member middle section is equipped with the mounting hole for connecting with chassis Rear secondary frame for vehicle, vertical after described
Beam is cooperatively connected on the Rear secondary frame for vehicle of chassis by fastener and mounting hole.
Further, the floor side member is integrally integrally formed shell structure, and the inside of floor side member is equipped with reinforcing rib III, adds
Strengthening tendons III are connect with the inner wall of floor side member, and reinforcing rib III is X-type or V-type, are connected to each other between reinforcing rib III and are constituted reticular structure.
The present invention also provides a kind of automobile, including vehicle body, the chassis of the vehicle body is indulged after being equipped with automobile as described above
Beam assembly.
The advantages of using technical solution of the present invention are as follows:
1, floor side member of the invention is an integral structure by the segmentation structure simplification of conventional " leading portion+back segment ", is saved
The connection process of floor side member leading portion and floor side member back segment reduces additional workload, while integral strength can be improved, floor side member one
The components on periphery are integrated and integrally, can effectively reduce periphery mating number of parts 10~18 by forming structure, and realization subtracts
Weigh 30~50%；Furthermore while floor side member reduces part dosage, the welding sequence between multiple parts can be saved, to improve
The machining accuracy and assembly precision of part.
2, the stepped structure design of floor side member of the present invention, not only can make floor side member be bonded guarantee with chassis Rear secondary frame for vehicle
The planarization that stringer is connect with chassis Rear secondary frame for vehicle can also facilitate the installation of floor side member Yu other components；Floor side member uses aluminium
Alloy material is made, and can reduce the weight of this structural member, realizes lightweight purpose.
3, the setting of reinforcing rib improves the structural strength of floor side member, and floor side member of the invention is indulged afterwards in the prior art
Beam is compared, and is had many advantages, such as that light-weight, integration is high, installation accuracy is high, intensity is high, is had a safety feature.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
Fig. 1 is the overall structure diagram of automobile rear longitudinal girder assembly of the present invention.
Fig. 2 is the top view of automobile rear longitudinal girder assembly of the present invention.
Fig. 3 is the bottom view of automobile rear longitudinal girder assembly of the present invention.
Label in above-mentioned figure is respectively as follows: 1, floor side member；11, reinforcing rib III；2, floor side member leading portion；3, floor side member middle section；
4, floor side member back segment.
Specific embodiment
In the present invention, it is to be understood that term " length ", " width ", "upper", "lower", "front", "rear", " left side ",
" right side ", "vertical", "horizontal", "top", "bottom" "inner", "outside", " clockwise ", " counterclockwise ", " axial direction ", " in-plane ", " week
To " etc. instructions orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of describing this hair
Bright and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation
Construction and operation, therefore be not considered as limiting the invention.
As shown in Figure 1, Figure 2 and Figure 3, a kind of automobile rear longitudinal girder assembly, including floor side member 1, floor side member 1 are integrally formed knot
Structure, floor side member 1 include floor side member leading portion 2, floor side member middle section 3 and floor side member back segment 4, and floor side member middle section 3 is arranged before floor side member
Between section 2 and floor side member back segment 4, the end of floor side member leading portion 2 is connect with front longitudinal beam, and the end of floor side member back segment 4 and rear guarantor are horizontal
Beam connection.Floor side member 1 of the invention is an integral structure by the segmentation structure simplification of conventional " leading portion+back segment ", after saving
The connection process of longitudinal beam front section and floor side member back segment reduces additional workload, while integral strength can be improved, and floor side member 1 is one
The components on periphery are integrated and integrally, can effectively reduce periphery mating number of parts 10~18 by forming structure, and realization subtracts
Weigh 30~50%；Furthermore while floor side member reduces part dosage, the welding sequence between multiple parts can be saved, to improve
The machining accuracy and assembly precision of part.
Whole stepped, the generally aluminium alloy casting and forming of floor side member 1 of floor side member 1, and using high-pressure casting technique at
Type.The design of the stepped structure of floor side member 1 can not only be such that floor side member 1 is bonded with chassis Rear secondary frame for vehicle and guarantee stringer 1 and chassis
The planarization of Rear secondary frame for vehicle connection, can also facilitate the installation of floor side member 1 Yu other components；Floor side member 1 uses aluminum alloy materials
It is made, can reduce the weight of this structural member, realize lightweight purpose.The whole shell structure that is integrally formed of floor side member 1, with tradition
Steelwork is compared, and is had integrated effect, can be increased dimensional accuracy.The inside of floor side member 1 is equipped with reinforcing rib III 11, reinforcing rib III
11 connect with the inner wall of floor side member 1, and reinforcing rib III 11 is X-type or V-type, are connected to each other between reinforcing rib III 11 and constitute netted knot
Structure, the setting of reinforcing rib III 11 improve the structural strength of floor side member 1.Floor side member 1 of the invention is indulged afterwards in the prior art
Beam is compared, and is had many advantages, such as that light-weight, integration is high, installation accuracy is high, intensity is high, is had a safety feature.
The side of floor side member leading portion 2 is equipped with interconnecting piece I 21 for connecting with threshold side bar, floor side member leading portion 2 it is another
Side is equipped with the interconnecting piece II 22 for connecting with rear floor front beam.Interconnecting piece I 21 is U-shaped shell structure, and interconnecting piece II 22 is
Bending structure；To increase contact area when connection, flange I 211, interconnecting piece I are equipped on interconnecting piece I 21 and interconnecting piece II 22
21, interconnecting piece II 22 is an integral molding structure with floor side member leading portion 2.The side wall of floor side member leading portion 2 is equipped with through-hole 23, through-hole 23
For installing filling conduit siphunculus.
Floor side member middle section 3 is equipped with the rear spring fastening 31 for shock mitigation system after installation chassis, and rear spring fastening 31 is
The inside of groove structure, groove structure is equipped with reinforcing rib I 311, and reinforcing rib I 311 is connect with the bottom of groove structure with side wall.Afterwards
The interconnecting piece III 32 and interconnecting piece IV 33 for connecting with rear floor middle are additionally provided on stringer middle section 3, interconnecting piece III 32 is
The U-type groove structure extended to the side in floor side member middle section 3；Interconnecting piece IV 33 is the shell structure to raise upward, interconnecting piece IV 33
Reinforcing rib II 331 is equipped with the intersection in floor side member middle section 3.Floor side member middle section 3 is equipped with for connecting with chassis Rear secondary frame for vehicle
Mounting hole 34, floor side member 1 is cooperatively connected on the Rear secondary frame for vehicle of chassis by fastener and mounting hole 34.
In order to guarantee stickiness that floor side member is connect with other components and increase contact area, the two sides of floor side member back segment 4
It is equipped with flange II 41, the side of floor side member back segment 4 is connect with rear floor edge, the other side of floor side member back segment 4 and rear floor
Rear cross beam connection.For the structural strength for increasing floor side member back segment 4, sunk structure is equipped in turn on the side wall of floor side member back segment 4
Form reinforcement structure.
The present invention also provides a kind of automobile, the chassis of vehicle body is indulged after being equipped with the automobile such as claim 1 to 9 any one
Beam assembly.
The present invention is exemplarily described in conjunction with attached drawing above, it is clear that the present invention implements not by aforesaid way
Limitation, as long as use technical solution of the present invention carry out various unsubstantialities improvement, or it is not improved will be of the invention
Conception and technical scheme directly apply to other occasions, within the scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811330212.0A CN109204474A (en) | 2018-11-09 | 2018-11-09 | A kind of automobile rear longitudinal girder assembly and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811330212.0A CN109204474A (en) | 2018-11-09 | 2018-11-09 | A kind of automobile rear longitudinal girder assembly and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109204474A true CN109204474A (en) | 2019-01-15 |
Family
ID=64994909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811330212.0A Pending CN109204474A (en) | 2018-11-09 | 2018-11-09 | A kind of automobile rear longitudinal girder assembly and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109204474A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588785A (en) * | 2019-10-25 | 2019-12-20 | 天津清源电动车辆有限责任公司 | A kind of downbending longitudinal beam and vehicle |
| CN112874633A (en) * | 2021-03-19 | 2021-06-01 | 重庆长安汽车股份有限公司 | Rear frame connecting piece and mounting structure thereof |
| CN113771947A (en) * | 2020-06-10 | 2021-12-10 | 广州汽车集团股份有限公司 | Automobile rear longitudinal beam structure, assembly and automobile |
| CN113998006A (en) * | 2021-11-29 | 2022-02-01 | 浙江吉利控股集团有限公司 | Automobile front cross beam assembly and automobile |
| WO2026007542A1 (en) * | 2024-07-03 | 2026-01-08 | 浙江极氪智能科技有限公司 | Rear side member, rear floor assembly, and vehicle |
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| CN208036448U (en) * | 2018-04-20 | 2018-11-02 | 广州汽车集团股份有限公司 | A kind of automobile rear floor frame |
| CN209241171U (en) * | 2018-11-09 | 2019-08-13 | 浙江众泰汽车制造有限公司 | A kind of automobile rear longitudinal girder assembly and automobile |
-
2018
- 2018-11-09 CN CN201811330212.0A patent/CN109204474A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1840010A1 (en) * | 2006-03-31 | 2007-10-03 | Dr.Ing. h.c.F. Porsche Aktiengesellschaft | Support frame for a motor vehicle |
| CN101323320A (en) * | 2008-06-03 | 2008-12-17 | 奇瑞汽车股份有限公司 | Automobile lower body structure |
| CN201300891Y (en) * | 2008-10-17 | 2009-09-02 | 奇瑞汽车股份有限公司 | Automotive body structure |
| DE102010027718A1 (en) * | 2010-07-20 | 2011-03-31 | Daimler Ag | Carrier arrangement for body of passenger car, has rear frame side member including frame side member part, which is designed as die-casting component and extends over partial length of rear frame side member |
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| CN207191168U (en) * | 2017-09-27 | 2018-04-06 | 东风小康汽车有限公司重庆分公司 | A kind of automobile rear longitudinal girder assembly structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588785A (en) * | 2019-10-25 | 2019-12-20 | 天津清源电动车辆有限责任公司 | A kind of downbending longitudinal beam and vehicle |
| CN113771947A (en) * | 2020-06-10 | 2021-12-10 | 广州汽车集团股份有限公司 | Automobile rear longitudinal beam structure, assembly and automobile |
| CN112874633A (en) * | 2021-03-19 | 2021-06-01 | 重庆长安汽车股份有限公司 | Rear frame connecting piece and mounting structure thereof |
| CN113998006A (en) * | 2021-11-29 | 2022-02-01 | 浙江吉利控股集团有限公司 | Automobile front cross beam assembly and automobile |
| WO2026007542A1 (en) * | 2024-07-03 | 2026-01-08 | 浙江极氪智能科技有限公司 | Rear side member, rear floor assembly, and vehicle |
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Application publication date: 20190115 |