CN116552639A - A rear sub-frame assembly and automobile - Google Patents
A rear sub-frame assembly and automobile Download PDFInfo
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- CN116552639A CN116552639A CN202310296172.7A CN202310296172A CN116552639A CN 116552639 A CN116552639 A CN 116552639A CN 202310296172 A CN202310296172 A CN 202310296172A CN 116552639 A CN116552639 A CN 116552639A
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- 239000000725 suspension Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 abstract description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 10
- 238000005266 casting Methods 0.000 abstract description 10
- 238000009827 uniform distribution Methods 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract description 2
- 229910052782 aluminium Inorganic materials 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000013585 weight reducing agent Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000008521 reorganization Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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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
本发明提供一种后副车架总成及汽车，后副车架总成整体采用重量较轻且结构强度较好的铝金属材料制成，且后副车架总成内部是采用一体空心铸造，确保后副车架总成上结构之间的紧密程度以及各部位承载力的均匀分布，后副车架总成包括后梁架、沿后梁架两侧垂直方向向外延伸出的侧梁架以及设置在两侧梁架远离后梁架一侧的前梁架，其中，后梁架、侧梁架以及前梁架为一体式连接且共同组成后副车架总成，侧梁架底部向外延伸出加强架，加强架两端还分别连接后梁架和前梁架，其中通过加强架能够提高侧梁架的承载强度，同时两端还分别与后梁架和前梁架连接，达到进一步提高后梁架与前梁架的承载强度以及结构的稳定性。
The invention provides a rear sub-frame assembly and an automobile. The rear sub-frame assembly is made of aluminum metal material with light weight and good structural strength as a whole, and the interior of the rear sub-frame assembly adopts integral hollow casting , to ensure the tightness between the structures on the rear sub-frame assembly and the uniform distribution of the bearing capacity of each part. The front beam frame is set on the side of the beam frame on both sides away from the rear beam frame, wherein the rear beam frame, side beam frame and front beam frame are integrally connected and together form the rear sub-frame assembly, and the bottom of the side beam frame extends outward Reinforcement frame, the two ends of the reinforcement frame are also connected to the rear beam and the front beam respectively. The bearing strength of the front beam frame and the stability of the structure.
Description
技术领域technical field
本发明涉及汽车车架技术领域，特别涉及一种后副车架总成及汽车。The invention relates to the technical field of automobile frame, in particular to a rear auxiliary frame assembly and an automobile.
背景技术Background technique
车架也称大梁。汽车的基体，一般由两根纵梁和几根横梁组成，经由悬挂装置﹑前桥﹑后桥支承在车轮上。具有足够的强度和刚度以承受汽车的载荷和从车轮传来的冲击。车架设计和结构的好坏，首先应该清楚了解的是车辆在行驶时车架所要承受的各种不同的力。如果车架在某方面的韧性不佳，就算有再好的悬挂系统，也无法达到良好的操控表现。而车架在实际环境下要面对4种压力。影响车架刚性的外力，通常是来自于路面摩擦力以及加减速或过弯时产生的G值。早期的汽车由于引擎及底盘设计不像现在发达，轮胎的抓地力也不如今日优异，因此车架刚性的重要性并不容易被关注。The frame is also called the girder. The base body of the car is generally composed of two longitudinal beams and several beams, and is supported on the wheels through the suspension device, front axle, and rear axle. It has sufficient strength and rigidity to withstand the load of the car and the impact from the wheels. Whether the frame design and structure are good or not, you should first clearly understand the various forces that the frame will bear when the vehicle is running. If the frame is not tough in some way, even with the best suspension system, it will not be able to achieve good handling performance. The frame has to face four kinds of pressure in the actual environment. The external force that affects the rigidity of the frame usually comes from the friction of the road surface and the G value generated during acceleration and deceleration or cornering. In early cars, the engine and chassis design were not as developed as they are now, and the grip of the tires was not as good as today, so the importance of frame rigidity was not easy to be paid attention to.
副车架是前后车桥的骨架，是前后车桥的重要组成部分。副车架并非完整的车架，只是支承前后车桥以及悬挂的支架，车桥、悬挂的支架通过副车架与车身相连。副车架包括前副车架和后副车架，前副车架和后副车架都是汽车底盘的重要组成部分。其中，新能源汽车中，后副车架主要支撑电机、控制臂等零部件，同时为电机、控制臂等零部件提供安装位置。The subframe is the skeleton of the front and rear axles and is an important part of the front and rear axles. The subframe is not a complete frame, but only supports the front and rear axles and suspension brackets, and the axles and suspension brackets are connected to the body through the subframe. The subframe includes the front subframe and the rear subframe, both of which are important parts of the car chassis. Among them, in new energy vehicles, the rear subframe mainly supports components such as motors and control arms, and at the same time provides installation locations for components such as motors and control arms.
但目前的铝后副车架的工艺大部分以拼焊为主，也就将不同位置的部件经过单独加工后重组形成副车架，其优点是零件结构简单，但是其缺点工序多，零件数量多，焊接变形大，焊缝数量多，尺寸精度低，同时不同部位的结构均对应不同的铸造模具，一定程度提高整个后副车架的造价成本。However, most of the current aluminum rear subframe technology is based on tailor welding, that is, parts in different positions are processed separately and then reorganized to form a subframe. The advantage is that the parts are simple in structure, but its disadvantages are many processes and the number of parts Many, large welding deformation, large number of welds, low dimensional accuracy, and the structures of different parts correspond to different casting molds, which increases the cost of the entire rear subframe to a certain extent.
发明内容Contents of the invention
基于此，本发明的目的是提供一种后副车架总成，旨在解决现有技术中，目的铝后副车架的工艺大部分以拼焊为主，安装工序多，零件数量多，焊接变形大，焊缝数量多的问题。Based on this, the object of the present invention is to provide a rear sub-frame assembly, which aims to solve the problem in the prior art that most of the technology of the aluminum rear sub-frame is based on tailor welding, there are many installation procedures, and the number of parts is large. The problem of large welding deformation and large number of welds.
本发明提出的一种后副车架总成，包括后梁架、沿所述后梁架两侧垂直方向向外延伸出的侧梁架以及设置在两所述侧梁架远离所述后梁架一侧的前梁架，其中，所述后梁架、所述侧梁架以及所述前梁架为一体式连接且共同组成所述后副车架总成；A rear sub-frame assembly proposed by the present invention includes a rear frame, a side frame extending outward along the vertical direction on both sides of the rear frame, and a side frame arranged on the side of the two side frames away from the rear frame The front beam frame, wherein, the rear beam frame, the side beam frame and the front beam frame are integrally connected and together form the rear sub-frame assembly;
所述侧梁架底部向外延伸出加强架，所述加强架与所述侧梁架呈一体式连接，所述加强架两端还分别连接所述后梁架和所述前梁架。A reinforcing frame extends outward from the bottom of the side beam frame, the reinforcing frame is integrally connected with the side beam frame, and the two ends of the reinforcing frame are respectively connected with the rear beam frame and the front beam frame.
上述，后副车架总成整体采用重量较轻且结构强度较好的铝金属材料制成，且后副车架总成内部是采用一体空心铸造，确保后副车架总成上结构之间的紧密程度以及各部位承载力的均匀分布，具体的，后副车架总成包括后梁架、侧梁架以及前梁架为一体式连接且共同组成后副车架总成，侧梁架底部向外延伸出加强架，且加强架两端还分别连接后梁架和前梁架呈一体式连接，其中通过加强架能够提高侧梁架的承载强度，同时两端还分别与后梁架和前梁架连接，达到进一步提高后梁架与前梁架的承载强度以及结构的稳定性，解决了目前的铝后副车架的工艺大部分以拼焊为主，也就将不同位置的部件经过单独加工后重组形成副车架，其优点是零件结构简单，但是其缺点工序多，零件数量多，焊接变形大，焊缝数量多，尺寸精度低，同时不同部位的结构均对应不同的铸造模具，一定程度提高整个后副车架的造价成本。As mentioned above, the rear sub-frame assembly is made of aluminum metal material with light weight and good structural strength, and the interior of the rear sub-frame assembly is made of integral hollow casting to ensure that the upper structure of the rear sub-frame assembly The tightness and the uniform distribution of the bearing capacity of each part. Specifically, the rear sub-frame assembly includes the rear frame, side frame and front frame. They are integrally connected to form the rear sub-frame assembly. The reinforcement frame is extended outward, and the two ends of the reinforcement frame are respectively connected to the rear beam frame and the front beam frame to form an integrated connection. Frame connection, to further improve the load-bearing strength and structural stability of the rear beam frame and front beam frame, and solve the problem that most of the current aluminum rear sub-frame technology is mainly tailor-welded, and the parts at different positions are processed separately After reorganization to form a sub-frame, the advantage is that the parts structure is simple, but its disadvantages are many processes, a large number of parts, large welding deformation, a large number of welds, and low dimensional accuracy. At the same time, the structures of different parts correspond to different casting molds. Increase the cost of the entire rear subframe to a certain extent.
进一步的，所述后梁架和所述前梁架两端分别设置有衬套。Further, the two ends of the rear frame and the front frame are respectively provided with bushings.
进一步的，所述前梁架与所述侧梁架连接区域顶端向外延伸出凸台安装面，所述凸台安装面用于增加所述前梁架与所述侧梁架连接区域强度，所述前梁架上远离所述凸台安装面一端的两侧分别向外延伸出至少一右悬置和至少一左悬置。Further, the top end of the connection area between the front frame and the side frame extends outwards from the boss installation surface, and the boss installation surface is used to increase the strength of the connection area between the front frame and the side frame, At least one right overhang and at least one left overhang respectively extend outward from the two sides of the end of the front beam frame away from the mounting surface of the boss.
进一步的，所述前梁架与两所述侧梁架连接区域一侧分别向外延伸出至少一前下摆臂。Further, at least one front lower swing arm extends outwards from one side of the connection area between the front beam frame and the two side beam frames.
进一步的，辆所述侧梁架中部一侧分别向外延伸出至少一前上摆臂。Further, at least one front upper swing arm extends outward from one side of the middle part of the side frame.
进一步的，所述后梁架与两所述侧梁架连接区域一侧分别向外延伸出至少一后上摆臂。Further, at least one rear upper swing arm extends outwards from one side of the connection area between the rear beam frame and the two side beam frames.
进一步的，所述后梁架顶端两侧向外延伸出至少一外倾摆臂，所述后梁架顶端两侧并靠近所述外倾摆臂处向外延伸出前束摆臂。Further, at least one camber swing arm extends outward from both sides of the top of the rear frame, and a toe-in swing arm extends outward from both sides of the top of the rear frame and close to the camber swing arm.
进一步的，所述后副车架总成表面开设有多个工艺孔。Further, a plurality of process holes are opened on the surface of the rear sub-frame assembly.
进一步的，所述工艺孔包括用于所述后副车架总成浇筑和注塑的浇道孔和漏沙孔以及减轻所述后副车架总成重量的降重孔。Further, the process holes include sprue holes and sand leakage holes for pouring and injection molding of the rear sub-frame assembly, and weight-reducing holes for reducing the weight of the rear sub-frame assembly.
此外，本发明还提供一种汽车，包括设置在所述汽车上的后副车架总成。In addition, the present invention also provides an automobile, including a rear sub-frame assembly arranged on the automobile.
附图说明Description of drawings
图1为本发明实施例中的后副车架总成一侧的结构示意图；Fig. 1 is a schematic structural view of one side of the rear subframe assembly in an embodiment of the present invention;
图2为本发明实施例中的后副车架总成另一侧的结构示意图；Fig. 2 is a structural schematic view of the other side of the rear subframe assembly in the embodiment of the present invention;
图3为本发明实施例中的后副车架总成另一侧的正视结构示意图；Fig. 3 is a front view structural diagram of the other side of the rear sub-frame assembly in the embodiment of the present invention;
图4为本发明实施例中的后副车架总成的侧视结构示意图；Fig. 4 is a side view structural schematic diagram of the rear sub-frame assembly in the embodiment of the present invention;
图5为本发明实施例中的后副车架总成A-A处截面图。Fig. 5 is a sectional view at A-A of the rear sub-frame assembly in the embodiment of the present invention.
主要元件符号说明：Description of main component symbols:
如下具体实施方式将结合上述附图进一步说明本发明。The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.
具体实施方式Detailed ways
为了便于理解本发明，下面将参照相关附图对本发明进行更全面的描述。附图中给出了本发明的若干实施例。但是，本发明可以以许多不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使对本发明的公开内容更加透彻全面。In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Several embodiments of the invention are shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.
需要说明的是，当元件被称为“固设于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。It should be noted that when an element is referred to as being “fixed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
请参阅图1至图5，所示为本发明实施例中的后副车架总成，包括后梁架3、沿后梁架3两侧垂直方向向外延伸出的侧梁架2以及设置在两侧梁架2远离后梁架3一侧的前梁架1，其中，后梁架3、侧梁架2以及前梁架1为一体式连接且共同组成后副车架总成，侧梁架2底部向外延伸出加强架4，加强架4与侧梁架2呈一体式连接，加强架4两端还分别连接后梁架3和前梁架1。Referring to Fig. 1 to Fig. 5, it is shown that the rear subframe assembly in the embodiment of the present invention includes a rear beam frame 3, side beam frames 2 extending outward along the vertical direction on both sides of the rear frame frame 3, and a side frame frame arranged on both sides The side frame 2 is far from the front frame 1 on the side of the rear frame 3, wherein the rear frame 3, the side frame 2 and the front frame 1 are integrally connected and together form the rear sub-frame assembly, the bottom of the side frame 2 A reinforcement frame 4 is extended outward, and the reinforcement frame 4 is integrally connected with the side beam frame 2 , and the two ends of the reinforcement frame 4 are respectively connected with the rear beam frame 3 and the front beam frame 1 .
需要说明的是，后副车架总成整体采用重量较轻且结构强度较好的铝金属材料制成，且后副车架总成内部是采用一体空心铸造(如说明书附图5所示，选取加强架4的某处截面，在确保后副车架总成的承重强度的同时，空心铸造时需确保其料厚度大于等于4mm)，在制造工艺上，可由铝液熔炉后直接在砂芯模上铸造成型，再经过振砂、毛坯锯切、X光检测、后处理及机加和检测等工序后，压入衬套，完成后副车架总成的制造，既简化了生产工艺，又提升了产品的制造精度，最大化地实现产品轻量化，另外，后副车架总成与传统的铁质金属车架相比，可以实现减重30％-35％的减重，如本产品铁制设计重量在35kg，铝制设计后其重量在24kg，举例说明，当后副车架总成运用于新能源汽车时，根据减重100kg的电耗为20km，经济效益180RMB/10kg(续航里程650km)，由此计算，本产品产生的经济效益小计：180×11/10＝198RMB经济效益，达到减重同时提升续航里程的目的。It should be noted that the rear sub-frame assembly is made of aluminum material with light weight and good structural strength as a whole, and the interior of the rear sub-frame assembly is made of integral hollow casting (as shown in Figure 5 of the specification, Select a certain cross-section of the reinforcing frame 4. While ensuring the load-bearing strength of the rear sub-frame assembly, it is necessary to ensure that the thickness of the material is greater than or equal to 4mm during hollow casting). Casting on the mold, and then through vibrating sand, blank sawing, X-ray inspection, post-processing, machining and inspection, etc., press into the bushing, and complete the manufacture of the sub-frame assembly, which not only simplifies the production process, It also improves the manufacturing precision of the product and maximizes the lightweight of the product. In addition, compared with the traditional iron metal frame, the rear sub-frame assembly can achieve a weight reduction of 30%-35%. The design weight of the iron product is 35kg, and the weight of the aluminum design is 24kg. For example, when the rear sub-frame assembly is used in a new energy vehicle, the power consumption is 20km based on the weight reduction of 100kg, and the economic benefit is 180RMB/10kg ( The cruising range is 650km). From this calculation, the subtotal of economic benefits generated by this product: 180×11/10=198RMB economic benefits, achieving the purpose of reducing weight and increasing cruising range.
进一步说明的，在文献“概念设计阶段铝合金后副车架轻量化设计”中分析制定铝副车架的轻量化系数为1/68≈1.47％，而本发明的后副车架总成在成形后测试阶段所得出的轻量化系数为24.6/1694＝1.45％，小于行业内的轻量化系数。To further illustrate, in the document "Aluminum alloy rear subframe lightweight design at the concept design stage", the lightweight factor of the aluminum subframe is analyzed and determined to be 1/68≈1.47%, and the rear subframe assembly of the present invention is The weight reduction coefficient obtained in the testing stage after forming is 24.6/1694=1.45%, which is smaller than the weight reduction coefficient in the industry.
进一步的，后梁架3和前梁架1两端分别设置有衬套13，前梁架1与侧梁架2连接区域顶端向外延伸出凸台安装面9，其中，凸台安装面9用于增加前梁架1与侧梁架2连接区域强度，同时便于后续汽车车架之间的组装连接，前梁架1上远离凸台安装面9一端的两侧分别向外延伸出至少一右悬置10和至少一左悬置11，前梁架1与两侧梁架2连接区域一侧分别向外延伸出至少一前下摆臂5，两侧梁架2中部一侧分别向外延伸出至少一前上摆臂6，后梁架3与两侧梁架2连接区域一侧分别向外延伸出至少一后上摆臂14，后梁架3顶端两侧向外延伸出至少一外倾摆臂7，后梁架3顶端两侧并靠近外倾摆臂7处向外延伸出前束摆臂8，后副车架总成表面开设有多个工艺孔，工艺孔包括用于后副车架总成浇筑和注塑的浇道孔12和漏沙孔16以及减轻后副车架总成重量的降重孔，另外，侧梁架2与加强架4之间围合形成缓冲腔17，且侧梁架2和加强架4均采用结构较为稳定的拱形设计，当结构得到了稳定优化后，对应的汽车在行驶过程中的NVH模态也得到一定程度的优化，提升属性性能，后梁架3上朝前梁架1方向延伸出悬置承台15。Further, bushings 13 are respectively provided at both ends of the rear frame 3 and the front frame 1, and the top of the connection area between the front frame 1 and the side frame 2 extends outwards from the boss mounting surface 9, wherein the boss mounting surface 9 is used for In order to increase the strength of the connection area between the front beam frame 1 and the side beam frame 2, and at the same time facilitate the assembly and connection between the subsequent vehicle frames, at least one right side of the front beam frame 1 is extended outwards from the two sides of the end away from the boss mounting surface 9 respectively. Suspension 10 and at least one left suspension 11, at least one front lower swing arm 5 extends outward from one side of the connection area between the front beam frame 1 and the two side beam frames 2, and one side of the middle part of the two side beam frames 2 extends outward respectively. At least one front upper swing arm 6, at least one rear upper swing arm 14 extends outward from one side of the connection area between the rear beam frame 3 and the two side beam frames 2, and at least one outwardly inclined swing arm extends outward from both sides of the top of the rear beam frame 3 7. On both sides of the top of the rear beam frame 3 and close to the camber swing arm 7, the toe-in swing arm 8 extends outward. There are multiple process holes on the surface of the rear sub-frame assembly. The process holes include holes for the rear sub-frame assembly. Casting and injection molding runner holes 12 and sand leakage holes 16, and weight-reducing holes for reducing the weight of the rear sub-frame assembly. In addition, a buffer cavity 17 is formed between the side beam frame 2 and the reinforcement frame 4, and the side beam frame 2 and the reinforcement frame 4 both adopt a relatively stable arch design. When the structure is stabilized and optimized, the corresponding NVH mode of the vehicle during driving is also optimized to a certain extent, which improves the property performance. A suspension platform 15 extends in the direction of the front beam frame 1 .
需要说明的是，以上描述的衬套1、前下摆臂5、前上摆臂6、外倾摆臂7、前束摆臂8、凸台安装面9、右悬置10、左悬置11、后上摆臂14以及悬置承台15，均为辅助后副车架总成上用于连接其它配套车架以及汽车本身悬置或汽车零件组装的辅助连接结构，也是属于本领域技术人员可以理解的辅助连接结构，在此做简单阐述，在后副车架总成四周分别压入四个衬套13，用于连接到车身；同时后副车架总成匹配的五连杆后悬架形式，分别连接前下摆臂5、前上摆臂6，后上摆臂14、外倾摆臂7以及前束摆臂8，以便实现摆臂与轮边的连接，最终实现路面激励与车身的完整传递；同时左右两侧机加凸台安装面9给到后稳定杆，可以实现整车防侧倾，在转向过程中很好地提升侧倾刚度，利于整车操控；后副车架总成的前梁架1处设计有左悬置11、右悬置10以及后梁架3处设计的悬置承台15(悬置承台15在行业内也可以是称作悬置点)等安装点，其中悬置承台15中部空设有优化布置间隙，相对设计在与汽车后驱动电机连接时呈Z向打紧的结构形式，具有较好的稳固以及结构锁固的效果，最终实现汽车后驱动电机的搭载。It should be noted that the above-described bushing 1, front lower swing arm 5, front upper swing arm 6, camber swing arm 7, toe-in swing arm 8, boss mounting surface 9, right suspension 10, left suspension 11 , the rear upper swing arm 14 and the suspension platform 15 are all auxiliary connection structures used to connect other supporting vehicle frames and the suspension of the automobile itself or the assembly of automobile parts on the auxiliary rear sub-frame assembly, and also belong to those skilled in the art The comprehensible auxiliary connection structure is briefly explained here. Four bushes 13 are respectively pressed into the surroundings of the rear sub-frame assembly to connect to the body; at the same time, the five-link rear suspension matched by the rear sub-frame assembly In the frame form, the front lower swing arm 5, the front upper swing arm 6, the rear upper swing arm 14, the camber swing arm 7 and the toe-in swing arm 8 are respectively connected, so as to realize the connection between the swing arm and the wheel edge, and finally realize the road excitation and the vehicle body. At the same time, the mounting surface 9 of the machined bosses on the left and right sides is provided to the rear stabilizer bar, which can realize the anti-rolling of the whole vehicle, and improve the roll stiffness during the steering process, which is beneficial to the control of the whole vehicle; the rear sub-frame One of the front beams of the assembly is designed with a left suspension 11, a right suspension 10, and a suspension cap 15 designed at three rear beams (the suspension cap 15 can also be called a suspension point in the industry), etc. The installation point, in which the middle part of the suspension cap 15 is provided with an optimized layout gap, is relatively designed to be tightened in the Z direction when it is connected with the rear drive motor of the car, which has better stability and structural locking effects, and finally realizes the Equipped with a rear drive motor.
综上，后副车架总成整体采用重量较轻且结构强度较好的铝金属材料制成，且后副车架总成内部是采用一体空心铸造，确保后副车架总成上结构之间的紧密程度以及各部位承载力的均匀分布，具体的，后副车架总成包括后梁架3、侧梁架2以及前梁架1为一体式连接且共同组成后副车架总成，侧梁架2底部向外延伸出加强架4，且加强架4两端还分别连接后梁架3和前梁架1呈一体式连接，其中通过加强架4能够提高侧梁架2的承载强度，同时两端还分别与后梁架3和前梁架1连接，达到进一步提高后梁架3与前梁架1的承载强度以及结构的稳定性，解决了目前的铝后副车架的工艺大部分以拼焊为主，也就将不同位置的部件经过单独加工后重组形成副车架，其优点是零件结构简单，但是其缺点工序多，零件数量多，焊接变形大，焊缝数量多，尺寸精度低，同时不同部位的结构均对应不同的铸造模具，一定程度提高整个后副车架的造价成本的问题。To sum up, the rear sub-frame assembly is made of aluminum material with light weight and good structural strength, and the interior of the rear sub-frame assembly is made of integral hollow casting to ensure that the upper structure of the rear sub-frame assembly The tightness between them and the uniform distribution of the bearing capacity of each part. Specifically, the rear subframe assembly includes the rear frame 3, the side frame 2 and the front frame 1. They are integrally connected and together form the rear subframe assembly. The reinforcement frame 4 extends outward from the bottom of the side beam frame 2, and the two ends of the reinforcement frame 4 are respectively connected to the rear frame frame 3 and the front frame frame 1 to form an integrated connection, wherein the load-bearing strength of the side beam frame 2 can be improved by the reinforcement frame 4, At the same time, the two ends are respectively connected with the rear frame 3 and the front frame 1, so as to further improve the load-bearing strength and structural stability of the rear frame 3 and the front frame 1, and solve the problem of most of the current aluminum rear sub-frame technology. Tailored welding is the main method, that is, parts in different positions are processed separately and then reorganized to form a sub-frame. Its advantage is that the structure of the parts is simple, but its disadvantages are many processes, a large number of parts, large welding deformation, large number of welds, and dimensional accuracy. At the same time, the structures of different parts correspond to different casting molds, which increases the cost of the entire rear subframe to a certain extent.
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.
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