CN108045442B - A body rear floor frame structure - Google Patents
A body rear floor frame structure Download PDFInfo
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- CN108045442B CN108045442B CN201711401088.8A CN201711401088A CN108045442B CN 108045442 B CN108045442 B CN 108045442B CN 201711401088 A CN201711401088 A CN 201711401088A CN 108045442 B CN108045442 B CN 108045442B
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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
- B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
- B62D25/2027—Floors or bottom sub-units in connection with other superstructure subunits the subunits being rear structures
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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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- Combustion & Propulsion (AREA)
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Abstract
Description
技术领域technical field
本发明涉及汽车车身技术领域，特别是涉及一种车身后地板框架结构。The invention relates to the technical field of automobile bodies, in particular to a rear floor frame structure of a vehicle body.
背景技术Background technique
目前，现有汽车的车身后地板框架结构主要由后轮罩、后地板横梁和后地板纵梁拼焊而成，后地板横梁上通常设置有后地板横梁接头，且后地板横梁接头由与后轮罩连接的后地板横梁上接头和与后地板纵梁连接的后地板横梁下接头等多个钢制零件拼接而成，以确保实现后地板横梁与后轮罩和后地板纵梁的连接。但是，由于后地板横梁接头需要由后地板横梁上接头和后地板横梁下接头等多个钢制零件拼接而成，因此导致后地板横梁的零件数量较多且焊接精度较差，从而导致后地板横梁的重量较大且强度和刚度较低，进而导致现有车身后地板框架结构的重量较大且强度和刚度较低。At present, the rear floor frame structure of the existing automobile body is mainly composed of rear wheel housings, rear floor beams and rear floor longitudinal beams. The rear floor beams are usually provided with rear floor beam joints, and the rear floor beam joints The upper joint of the rear floor cross beam connected to the wheel house and the lower joint of the rear floor cross beam connected with the rear floor longitudinal beam are spliced together to ensure the connection between the rear floor cross beam and the rear wheel housing and the rear floor longitudinal beam. However, since the rear floor beam joint needs to be spliced by multiple steel parts such as the upper joint of the rear floor beam and the lower joint of the rear floor beam, the number of parts of the rear floor beam is large and the welding accuracy is poor, resulting in the rear floor The beam is heavy and low in strength and stiffness, which in turn results in a heavy weight and low strength and stiffness of the existing body rear floor frame structure.
发明内容Contents of the invention
本发明的目的是提供一种车身后地板框架结构，以解决现有车身后地板框架结构的后地板横梁由于后地板横梁接头由后地板横梁上接头和后地板横梁下接头等多个钢制零件拼接而成，从而导致后地板横梁零件数量较多且焊接精度较差的技术问题，以确保后地板横梁的重量较轻且强度和刚度较高，从而确保车身后地板框架结构的重量较轻且强度和刚度较高。The purpose of the present invention is to provide a rear floor frame structure of a car body to solve the problem that the rear floor beam of the existing car body rear floor frame structure is composed of multiple steel parts such as the upper joint of the rear floor cross beam and the lower joint of the rear floor cross beam. Splicing, resulting in a large number of rear floor beam parts and poor welding precision technical problems, to ensure that the rear floor beam is light in weight and high in strength and rigidity, so as to ensure that the rear floor frame structure of the body is light in weight and High strength and rigidity.
为了解决上述技术问题，本发明提供一种车身后地板框架结构，包括后轮罩、后地板横梁和后纵梁，所述后纵梁包括后纵梁前段和后纵梁后段，所述后纵梁前段包括后纵梁前段本体以及与所述后纵梁前段本体连接的接头结构，所述后纵梁前段本体与所述接头结构由铝合金一体铸造成型；所述后轮罩、所述后地板横梁和所述后纵梁后段分别连接在所述接头结构上。In order to solve the above technical problems, the present invention provides a rear floor frame structure of a car body, including a rear wheel house, a rear floor beam and a rear longitudinal beam, the rear longitudinal beam includes a front section of the rear longitudinal beam and a rear section of the rear longitudinal beam, and The front section of the longitudinal beam includes the body of the front section of the rear longitudinal beam and the joint structure connected with the body of the front section of the rear longitudinal beam. The rear floor beam and the rear section of the rear longitudinal beam are respectively connected to the joint structure.
作为优选方案，所述后纵梁前段本体上设有多个横向设置的第一加强筋，且所述第一加强筋与所述后纵梁前段本体由铝合金一体铸造成型。As a preferred solution, the body of the front section of the rear longitudinal beam is provided with a plurality of first reinforcing ribs arranged transversely, and the first reinforcing ribs and the body of the front section of the rear longitudinal beam are integrally casted from aluminum alloy.
作为优选方案，所述后纵梁前段本体上还设有多个纵向设置的第二加强筋，且所述第二加强筋与所述第一加强筋由铝合金一体铸造成型；多个所述第二加强筋与多个所述第一加强筋纵横交错设置。As a preferred solution, the body of the front section of the rear longitudinal beam is also provided with a plurality of longitudinally arranged second reinforcing ribs, and the second reinforcing ribs and the first reinforcing ribs are integrally cast from aluminum alloy; The second reinforcing ribs are arranged in a criss-cross pattern with the plurality of first reinforcing ribs.
作为优选方案，所述接头结构上设有多个纵横交错的第三加强筋，且所述第三加强筋与所述接头结构由铝合金一体铸造成型。As a preferred solution, the joint structure is provided with a plurality of criss-cross third reinforcing ribs, and the third reinforcing ribs and the joint structure are integrally casted from aluminum alloy.
作为优选方案，所述接头结构上还设有后纵梁后段接头，且所述后纵梁后段接头与所述接头结构由铝合金一体铸造成型；所述后纵梁后段的一端插接在所述后纵梁后段接头内。As a preferred solution, the joint structure is also provided with a rear section joint of the rear longitudinal beam, and the rear section joint of the rear longitudinal beam and the joint structure are integrally casted from an aluminum alloy; one end of the rear section of the rear longitudinal beam is inserted Connected to the rear section joint of the rear longitudinal beam.
作为优选方案，所述接头结构上还设有后地板横梁接头，且所述后地板横梁接头与所述接头结构由铝合金一体铸造成型；所述后地板横梁的一端插接在所述后地板横梁接头内。As a preferred solution, the joint structure is also provided with a rear floor crossbeam joint, and the rear floor crossbeam joint and the joint structure are integrally casted from an aluminum alloy; one end of the rear floor crossbeam is plugged into the rear floor In the beam joint.
作为优选方案，所述接头结构上还设有后轮罩接头，且所述后轮罩接头与所述接头结构由铝合金一体铸造成型；所述后轮罩连接在所述后轮罩接头上。As a preferred solution, the joint structure is also provided with a rear wheel house joint, and the rear wheel house joint and the joint structure are integrally cast from an aluminum alloy; the rear wheel house is connected to the rear wheel house joint .
作为优选方案，所述后纵梁后段由铝合金型材挤出成型。As a preferred solution, the rear section of the rear longitudinal beam is extruded from an aluminum alloy profile.
作为优选方案，所述后地板横梁由铝合金型材挤出成型。As a preferred solution, the rear floor beam is extruded from an aluminum alloy profile.
作为优选方案，所述后轮罩由铝合金铸造成型。As a preferred solution, the rear wheel cover is cast from aluminum alloy.
为了解决相同的技术问题，本发明还提供一种下车身框架结构，包括侧围结构、前地板门槛梁以及上述的车身后地板框架结构，所述侧围结构连接在所述后轮罩上，所述前地板门槛梁连接在所述后纵梁前段本体上。In order to solve the same technical problem, the present invention also provides a lower body frame structure, including a side wall structure, a front floor sill beam and the above-mentioned rear floor frame structure of the vehicle body, the side wall structure is connected to the rear wheel house, The front floor sill beam is connected to the body of the front section of the rear longitudinal beam.
本发明提供一种车身后地板框架结构，包括后轮罩、后地板横梁和后纵梁，后纵梁包括后纵梁前段和后纵梁后段，后纵梁前段包括后纵梁前段本体以及与后纵梁前段本体连接的接头结构，后纵梁前段本体与接头结构由铝合金一体铸造成型；后轮罩、后地板横梁和纵梁后段分别连接在接头结构上。由于后纵梁前段本体与接头结构由铝合金一体铸造成型，因此能够将接头结构集成在后纵梁前段本体上，以避免在后地板横梁上设置由后地板横梁上接头和后地板横梁下接头等多个钢制零件拼接而成的后地板横梁接头，从而减少了后地板横梁的零件数量并简化了后地板横梁上的拼焊结构，进而减轻了后地板横梁的重量并提高了后地板横梁的强度和刚度，以确保车身后地板框架结构的重量较轻且强度和刚度较高。此外，后纵梁前段本体与接头结构由铝合金一体铸造成型不仅减轻了后纵梁前段的重量，而且还提高了接头结构与后轮罩、后地板横梁和纵梁后段的连接强度和刚度，从而进一步确保车身后地板框架结构的重量较轻且强度和刚度较高。The invention provides a rear floor frame structure of a car body, which includes a rear wheel house, a rear floor beam and a rear longitudinal beam. The rear longitudinal beam includes a front section of the rear longitudinal beam and a rear section of the rear longitudinal beam. The joint structure connected with the front body of the rear longitudinal beam, the front body of the rear longitudinal beam and the joint structure are integrally casted by aluminum alloy; the rear wheel house, the rear floor cross member and the rear part of the longitudinal beam are respectively connected to the joint structure. Since the front body of the rear longitudinal beam and the joint structure are integrally casted by aluminum alloy, the joint structure can be integrated on the front body of the rear longitudinal beam, so as to avoid setting the upper joint of the rear floor cross beam and the lower joint of the rear floor cross beam on the rear floor cross beam The rear floor beam joint spliced by multiple steel parts, thus reducing the number of parts of the rear floor beam and simplifying the tailor welding structure on the rear floor beam, thereby reducing the weight of the rear floor beam and improving the rear floor beam The strength and rigidity of the body to ensure that the body rear floor frame structure is light in weight and high in strength and rigidity. In addition, the body of the front section of the rear longitudinal beam and the joint structure are integrally cast from aluminum alloy, which not only reduces the weight of the front section of the rear longitudinal beam, but also improves the connection strength and rigidity of the joint structure and the rear wheel housing, the rear floor beam and the rear section of the longitudinal beam , so as to further ensure that the rear floor frame structure of the vehicle body is light in weight and high in strength and rigidity.
附图说明Description of drawings
图1是本发明实施例中的车身后地板框架结构的结构示意图；Fig. 1 is the schematic structural view of the frame structure of the rear floor of the vehicle body in the embodiment of the present invention;
图2是本发明实施例中的车身后地板框架结构的爆炸图；Fig. 2 is the exploded view of the frame structure of the rear floor of the vehicle body in the embodiment of the present invention;
图3是本发明实施例中的后纵梁前段的结构示意图；Fig. 3 is a schematic structural view of the front section of the rear longitudinal beam in the embodiment of the present invention;
图4是本发明实施例中的后纵梁后段的结构示意图；Fig. 4 is a schematic structural view of the rear section of the rear longitudinal beam in the embodiment of the present invention;
图5是本发明实施例中的后地板横梁的结构示意图；Fig. 5 is a schematic structural view of the rear floor beam in an embodiment of the present invention;
图6是本发明实施例中的后轮罩的结构示意图；Fig. 6 is a schematic structural view of the rear wheel cover in the embodiment of the present invention;
图7是本发明实施例中的后纵梁的正视图；Fig. 7 is a front view of the rear longitudinal beam in the embodiment of the present invention;
图8是本发明实施例中下车身框架结构的结构示意图。Fig. 8 is a structural schematic diagram of the frame structure of the lower vehicle body in the embodiment of the present invention.
其中，1、后轮罩；2、后地板横梁；3、后纵梁；31、后纵梁前段；311、后纵梁前段本体；3111、第一加强筋；3112、第二加强筋；312、接头结构；3121、第三加强筋；3122、后纵梁后段接头；3123、后地板横梁接头；3124、后轮罩接头；32、后纵梁后段；Among them, 1. Rear wheel housing; 2. Rear floor beam; 3. Rear longitudinal beam; 31. Front section of rear longitudinal beam; 311. Front section body of rear longitudinal beam; 3111. First rib; 3112. Second rib; 312 , joint structure; 3121, the third rib; 3122, the rear section joint of the rear longitudinal beam; 3123, the rear floor beam joint; 3124, the rear wheel house joint; 32, the rear section of the rear longitudinal beam;
100、车身后地板框架结构；200、侧围结构；300、前地板门槛梁。100. Body rear floor frame structure; 200. Side wall structure; 300. Front floor sill beam.
具体实施方式Detailed ways
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不用来限制本发明的范围。The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
在本发明的说明中，上、下、左、右、前和后等方位以及顶部和底部的描述都是针对图1进行限定的，当车身后地板框架结构的放置方式发生改变时，其相应的方位以及顶部和底部描述也将根据放置方式的改变而改变，本发明在此不做赘述。In the description of the present invention, the orientations such as up, down, left, right, front and rear, as well as the description of the top and the bottom are all limited with respect to Fig. The orientation and description of the top and bottom will also change according to the change of the placement method, and the present invention will not repeat them here.
结合图1至图6所示，本发明优选实施例的一种车身后地板框架结构100，包括后轮罩1、后地板横梁2和后纵梁3，所述后纵梁3包括后纵梁前段31和后纵梁后段32，所述后纵梁前段31包括后纵梁前段本体311以及与所述后纵梁前段本体311连接的接头结构312，所述后纵梁前段本体311与所述接头结构312由铝合金一体铸造成型；所述后轮罩1、所述后地板横梁2和所述后纵梁后段32分别连接在所述接头结构312上。1 to 6, a car body rear floor frame structure 100 according to a preferred embodiment of the present invention includes a rear wheel house 1, a rear floor beam 2 and a rear longitudinal beam 3, and the rear longitudinal beam 3 includes a rear longitudinal beam The front section 31 and the rear section 32 of the rear longitudinal beam. The front section 31 of the rear longitudinal beam includes the front section body 311 of the rear longitudinal beam and the joint structure 312 connected with the front section body 311 of the rear longitudinal beam. The joint structure 312 is formed by integral casting of aluminum alloy; the rear wheel house 1 , the rear floor beam 2 and the rear longitudinal beam rear section 32 are respectively connected to the joint structure 312 .
在本发明实施例中，由于所述后纵梁前段本体311与所述接头结构312由铝合金一体铸造成型，因此能够将所述接头结构312集成在所述后纵梁前段本体311上，以避免在所述后地板横梁2上设置由后地板横梁上接头和后地板横梁下接头等多个钢制零件拼接而成的后地板横梁接头，从而减少了所述后地板横梁2的零件数量并简化了所述后地板横梁2上的拼焊结构，进而减轻了所述后地板横梁2的重量并提高了所述后地板横梁2的强度和刚度，以确保所述车身后地板框架结构100的重量较轻且强度和刚度较高。In the embodiment of the present invention, since the front body 311 of the rear longitudinal beam and the joint structure 312 are integrally cast and formed by aluminum alloy, the joint structure 312 can be integrated on the front body 311 of the rear longitudinal beam to Avoid setting the rear floor beam joint spliced by a plurality of steel parts such as the rear floor beam upper joint and the rear floor beam lower joint on the rear floor beam 2, thereby reducing the number of parts of the rear floor beam 2 and The tailor-welded structure on the rear floor beam 2 is simplified, thereby reducing the weight of the rear floor beam 2 and improving the strength and rigidity of the rear floor beam 2, so as to ensure the stability of the rear floor frame structure 100 of the vehicle body. Lightweight with high strength and stiffness.
此外，所述后纵梁前段本体311与所述接头结构312由铝合金一体铸造成型不仅减轻了所述后纵梁前段31的重量，而且还提高了所述接头结构312与所述后轮罩1、所述后地板横梁2和所述后纵梁后段32的连接强度和刚度，从而进一步确保所述车身后地板框架结构100的重量较轻且强度和刚度较高。In addition, the body 311 of the front section of the rear longitudinal beam and the joint structure 312 are integrally cast by aluminum alloy, which not only reduces the weight of the front section 31 of the rear longitudinal beam, but also improves the joint structure 312 and the rear wheel house. 1. The connection strength and rigidity of the rear floor beam 2 and the rear section 32 of the rear longitudinal beam, so as to further ensure that the vehicle body rear floor frame structure 100 is light in weight and high in strength and rigidity.
结合图1、图2、图3和图7所示，为了避免所述后纵梁前段31在碰撞过程中被压溃，本实施例中的所述后纵梁前段本体311上设有多个横向设置的第一加强筋3111，且所述第一加强筋3111与所述后纵梁前段本体311由铝合金一体铸造成型。由于铝合金铸造工艺有利于提升所述后纵梁前段本体311的几何设计自由度，因此可以在所述后纵梁前段本体311上设置与其由铝合金一体铸造成型的多个横向设置的所述第一加强筋3111，通过所述第一加强筋3111将所述后纵梁前段本体311在碰撞过程中所受到的碰撞力通过所述第一加强筋3111传递到所述接头结构312上，并最终通过所述接头结构312上的第三加强筋3121传递到所述后纵梁后段32上，从而为所述后纵梁前段31提供正面碰撞载荷传递通道，以确保所述后纵梁后段32先于所述后纵梁前段31先发生压溃，进而避免所述后纵梁前段31被压溃。As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 7, in order to prevent the front section 31 of the rear longitudinal beam from being crushed during the collision, the body 311 of the front section of the rear longitudinal beam in this embodiment is provided with a plurality of The first reinforcing rib 3111 arranged transversely, and the first reinforcing rib 3111 and the front section body 311 of the rear longitudinal beam are integrally casted from aluminum alloy. Since the aluminum alloy casting process is conducive to improving the geometric design freedom of the front section body 311 of the rear side beam, it is possible to set the front section body 311 of the rear side beam on the front section body 311 of the rear side beam. The first reinforcing rib 3111 transmits the collision force received by the front body 311 of the rear longitudinal beam during the collision process to the joint structure 312 through the first reinforcing rib 3111 , and Finally, the third rib 3121 on the joint structure 312 is transmitted to the rear section 32 of the rear side beam, so as to provide a frontal collision load transmission channel for the front section 31 of the rear side beam, so as to ensure that the rear section of the rear side beam The section 32 is crushed before the front section 31 of the rear longitudinal beam, thereby preventing the front section 31 of the rear longitudinal beam from being crushed.
结合图1、图2、图3和图7所示，为了进一步避免所述后纵梁3在碰撞过程中被压溃，本实施例中的所述后纵梁前段本体311上还设有多个纵向设置的第二加强筋3112，且所述第二加强筋3112与所述第一加强筋3111由铝合金一体铸造成型；多个所述第二加强筋3112与多个所述第一加强筋3111纵横交错设置。由于铝合金铸造工艺有利于提升所述后纵梁前段本体311的几何设计自由度，因此可以在所述后纵梁前段本体311上设置与所述第一加强筋3111由铝合金一体铸造成型的多个纵向设置的所述第二加强筋3112，并使多个所述第二加强筋3112与多个所述第一加强筋3111纵横交错设置，以将所述后纵梁前段本体311在碰撞过程中所受到的碰撞力通过所述第二加强筋3112分散到所述后纵梁前段本体311的各个部位上，从而避免所述后纵梁前段本体311发生应力集中，以最大程度保持所述后纵梁前段本体311的结构稳定性，进而进一步避免所述后纵梁前段31被压溃。As shown in Figure 1, Figure 2, Figure 3 and Figure 7, in order to further prevent the rear longitudinal beam 3 from being crushed during the collision, there are multiple A second reinforcing rib 3112 arranged longitudinally, and the second reinforcing rib 3112 and the first reinforcing rib 3111 are integrally casted by aluminum alloy; a plurality of the second reinforcing ribs 3112 and a plurality of the first reinforcing ribs The ribs are arranged in a criss-cross pattern. Since the aluminum alloy casting process is conducive to improving the geometric design freedom of the front section body 311 of the rear longitudinal beam, it is possible to set on the front section body 311 of the rear side beam and the first reinforcing rib 3111 which is integrally cast and formed by aluminum alloy. A plurality of the second reinforcement ribs 3112 arranged longitudinally, and the plurality of the second reinforcement ribs 3112 and the plurality of the first reinforcement ribs 3111 are arranged in a criss-cross pattern, so that the front section body 311 of the rear longitudinal beam is collided The collision force received during the process is distributed to various parts of the front body 311 of the rear longitudinal beam through the second rib 3112, so as to avoid stress concentration in the front body 311 of the rear longitudinal beam and maintain the The structural stability of the front section body 311 of the rear longitudinal beam further prevents the front section 31 of the rear longitudinal beam from being crushed.
结合图1至图3所示，为了提高所述接头结构312的强度和刚度，本实施例中的所述接头结构312上设有多个纵横交错的第三加强筋3121，且所述第三加强筋3121与所述接头结构312由铝合金一体铸造成型。由于铝合金铸造工艺有利于提升所述接头结构312的几何设计自由度，因此可以在所述接头结构312上设置与其由铝合金一体铸造成型的多个纵横交错的所述第三加强筋3121，以提高所述接头结构312的抗弯性能，从而提高所述接头312的强度和刚度，进而进一步提高所述车身后地板框架结构100的强度和刚度。1 to 3, in order to improve the strength and rigidity of the joint structure 312, the joint structure 312 in this embodiment is provided with a plurality of criss-cross third ribs 3121, and the third The reinforcing rib 3121 and the joint structure 312 are integrally casted from aluminum alloy. Since the aluminum alloy casting process is conducive to improving the geometric design freedom of the joint structure 312, a plurality of criss-crossing third reinforcing ribs 3121 integrally cast with aluminum alloy can be provided on the joint structure 312, To improve the bending resistance of the joint structure 312 , thereby increasing the strength and rigidity of the joint 312 , and further improving the strength and rigidity of the rear floor frame structure 100 of the vehicle body.
结合图1至图4所示，为了使结构合理化，以实现所述后纵梁后段32与所述后纵梁前段31的牢靠连接，本实例中的所述接头结构312上还设有后纵梁后段接头3122，且所述后纵梁后段接头3122与所述接头结构312由铝合金一体铸造成型；所述后纵梁后段32的一端插接在所述后纵梁后段接头3122内。通过在所述接头结构32上设置与其由铝合金一体铸造成型的所述后纵梁接头3122，并将所述后纵梁后段32的一端插接在所述后纵梁后段接头3122内，从而实现所述后纵梁后段32牢靠地连接在所述后纵梁前段31上。优选地，本实施例中的所述后纵梁后段接头3122设于所述接头结构312的左侧壁上。As shown in Figures 1 to 4, in order to rationalize the structure and realize the firm connection between the rear section 32 of the rear longitudinal beam and the front section 31 of the rear longitudinal beam, the joint structure 312 in this example is also provided with a rear The rear section joint 3122 of the longitudinal beam, and the rear section joint 3122 of the rear longitudinal beam and the joint structure 312 are integrally cast and formed by aluminum alloy; one end of the rear section 32 of the rear longitudinal beam is inserted into the rear section of the rear longitudinal beam Inside the connector 3122. The joint structure 32 is provided with the rear longitudinal beam joint 3122 integrally cast with aluminum alloy, and one end of the rear longitudinal beam rear section 32 is plugged into the rear longitudinal beam rear section joint 3122 , so that the rear section 32 of the rear longitudinal beam is firmly connected to the front section 31 of the rear longitudinal beam. Preferably, the rear section joint 3122 of the rear longitudinal beam in this embodiment is arranged on the left side wall of the joint structure 312 .
具体地，为了提高所述后纵梁后段32与所述后纵梁前段31的连接强度，优选地，本实施例中的所述后纵梁后段32的一端插入所述后纵梁后段接头3122内，并通过热熔自攻丝连接在所述后纵梁后段接头3122内。当然，在本发明实施例中，所述后纵梁后段32也可以通过其它方式连接在所述后纵梁后段接头3122内，只需满足有利于提高所述后纵梁后段32与所述后在纵梁前段31的连接强度即可，在此不做更多的赘述。Specifically, in order to improve the connection strength between the rear section 32 of the rear longitudinal beam and the front section 31 of the rear longitudinal beam, preferably, one end of the rear section 32 of the rear longitudinal beam in this embodiment is inserted into the back of the rear longitudinal beam The section joint 3122 is connected to the rear longitudinal beam rear section joint 3122 by hot-melt self-tapping. Of course, in the embodiment of the present invention, the rear section 32 of the rear longitudinal beam can also be connected in the joint 3122 of the rear section of the rear longitudinal beam in other ways, as long as it is beneficial to improve the connection between the rear section 32 of the rear longitudinal beam and The connection strength of the front section 31 of the rear longitudinal beam is sufficient, so no more details are given here.
结合图1、图2、图3和图5所示，为了使结构合理化，以实现所述后地板横梁2与所述后纵梁前段31的牢靠连接，本实施例中的所述接头结构312上还设有后地板横梁接头3123，且所述后地板横梁接头3123与所述接头结构312由铝合金一体铸造成型；所述后地板横梁2的一端插接在所述后地板横梁接头3123内。通过在所述接头结构312上设置与其由铝合金一体铸造成型的所述后地板横梁接头3123，并将所述后地板横梁2的一端插接在所述后地板横梁接头3123内，从而实现所述后地板横梁2牢靠地连接在所述后纵梁前段31上。优选地，本实施例中的所述后地板横梁接头3123设于所述接头结构312的前侧壁上。As shown in Figure 1, Figure 2, Figure 3 and Figure 5, in order to rationalize the structure so as to realize the firm connection between the rear floor beam 2 and the front section 31 of the rear longitudinal beam, the joint structure 312 in this embodiment There is also a rear floor crossbeam joint 3123, and the rear floor crossbeam joint 3123 and the joint structure 312 are integrally casted by aluminum alloy; one end of the rear floor crossbeam 2 is plugged into the rear floor crossbeam joint 3123 . The joint structure 312 is provided with the rear floor crossbeam joint 3123 integrally cast with aluminum alloy, and one end of the rear floor crossbeam 2 is plugged into the rear floor crossbeam joint 3123, so as to realize the The rear floor beam 2 is firmly connected to the front section 31 of the rear longitudinal beam. Preferably, the rear floor beam joint 3123 in this embodiment is arranged on the front side wall of the joint structure 312 .
具体地，为了提高所述后地板横梁2与所述后纵梁前段31的连接强度，优选地，本实施例中的所述后地板横梁2的一端插入所述后地板横梁接头3123内，并通过热熔自攻丝连接在所述后地板横梁接头3123内。当然，在本发明实施例中，所述后地板横梁2也可以通过其它方式连接在所述后地板横梁接头3123内，只需满足有利于提高所述后地板横梁2与所述后在纵梁前段31的连接强度即可，在此不做更多的赘述。Specifically, in order to improve the connection strength between the rear floor beam 2 and the front section 31 of the rear longitudinal beam, preferably, one end of the rear floor beam 2 in this embodiment is inserted into the rear floor beam joint 3123, and It is connected in the rear floor beam joint 3123 by hot-melt self-tapping. Of course, in the embodiment of the present invention, the rear floor beam 2 can also be connected in the rear floor beam joint 3123 in other ways, as long as it is beneficial to improve the connection between the rear floor beam 2 and the rear longitudinal beam. The connection strength of the front section 31 is sufficient, and no more details are given here.
结合图1、图2、图3和图6所示，为了使结构合理化，以实现所述后轮罩1与所述后纵梁前段31的牢靠连接，本实施例中的所述接头结构312上还设有后轮罩接头3124，且所述后轮罩接头3124与所述接头结构312由铝合金一体铸造成型；所述后轮罩1连接在所述后轮罩接头3124上。通过在所述接头结构32上设置与其由铝合金一体铸造成型的所述后轮罩接头3124，并将所述后轮罩1连接在所述后轮罩接头3124上，从而实现所述后轮罩1牢靠地连接在所述后纵梁前段31上。优选地，本实施例中的所述后轮罩接头3124设于所述接头结构312的顶壁上。1 , 2 , 3 and 6 , in order to rationalize the structure so as to realize the firm connection between the rear wheel house 1 and the front section 31 of the rear longitudinal beam, the joint structure 312 in this embodiment There is also a rear wheel house joint 3124 on the top, and the rear wheel house joint 3124 and the joint structure 312 are integrally casted by aluminum alloy; the rear wheel house 1 is connected to the rear wheel house joint 3124 . The rear wheel housing joint 3124 is provided on the joint structure 32 and integrally cast with the aluminum alloy, and the rear wheel housing 1 is connected to the rear wheel housing joint 3124, so that the rear wheel can be realized. The cover 1 is firmly connected to the front section 31 of the rear side member. Preferably, the rear wheelhouse joint 3124 in this embodiment is arranged on the top wall of the joint structure 312 .
具体地，为了提高所述后轮罩1与所述后纵梁前段31的连接强度，优选地，本实施例中的所述后轮罩1通过点焊焊接在所述后轮罩接头3124上。当然，在本发明实施例中，所述后轮罩1也可以通过其它方式连接在所述后轮罩接头3124上，只需满足有利于提高所述后轮罩1与所述后在纵梁前段31的连接强度即可，在此不做更多的赘述。Specifically, in order to improve the connection strength between the rear wheel house 1 and the front section 31 of the rear longitudinal beam, preferably, the rear wheel house 1 in this embodiment is welded to the rear wheel house joint 3124 by spot welding . Of course, in the embodiment of the present invention, the rear wheel house 1 can also be connected to the rear wheel house joint 3124 in other ways, as long as it is beneficial to improve the connection between the rear wheel house 1 and the rear side member. The connection strength of the front section 31 is sufficient, and no more details are given here.
在本发明实施例中，为了进一步确保在所述后纵梁3碰撞过程中，所述后纵梁后段32先于所述后纵梁前段31发生压溃，本实施例中的所述后纵梁后段32由铝合金型材挤出成型。由于通过铝合金型材挤出成型的所述后纵梁后段32的刚度和强度都低于由铝合金铸造成型的所述后纵梁前段31，从而能够确保在所述后纵梁3碰撞过程中，所述后纵梁后段32先于所述后纵梁前段31发生压溃，进而能够最大程度保持所述后纵梁前段31的结构稳定性，以进一步避免所述后纵梁前段31被压溃。In the embodiment of the present invention, in order to further ensure that during the collision process of the rear longitudinal beam 3, the rear section 32 of the rear longitudinal beam is crushed before the front section 31 of the rear longitudinal beam. The rear section 32 of the longitudinal beam is extruded from an aluminum alloy profile. Since the rigidity and strength of the rear longitudinal beam rear section 32 formed by extruding aluminum alloy profiles are lower than the rear longitudinal beam front section 31 formed by aluminum alloy casting, it can ensure Among them, the rear section 32 of the rear longitudinal beam is crushed before the front section 31 of the rear longitudinal beam, so as to maintain the structural stability of the front section 31 of the rear longitudinal beam to the greatest extent, so as to further avoid the front section 31 of the rear longitudinal beam crushed.
此外，在本发明实施例中，由于铝合金的吸能效率高于钢材的吸能效率，从而提高了所述后纵梁前段31和所述后纵梁后段32的抗压溃能力，进而降低了所述后纵梁前段31和所述后纵梁后段32在所述后纵梁3碰撞过程中被压溃的风险。In addition, in the embodiment of the present invention, since the energy absorption efficiency of aluminum alloy is higher than that of steel, the crush resistance of the front section 31 of the rear longitudinal beam and the rear section 32 of the rear longitudinal beam is improved, and further The risk of crushing of the rear longitudinal member front section 31 and the rear longitudinal member rear section 32 during a collision of the rear longitudinal member 3 is reduced.
在本发明实施例中，为了减轻所述后地板横梁2的重量并提高所述后地板横梁2的强度和刚度，本实施例中的所述后地板横梁2由铝合金型材挤出成型，以避免所述后地板横梁2由多个钢制零件拼焊而成，并且由于所述后地板横梁2的材料为铝合金，从而进一步减轻了所述后地板横梁2的重量并进一步提高了所述后地板横梁2的强度和刚度，从而进一步确保所述车身后地板框架结构100的重量较轻且强度和刚度较高。In the embodiment of the present invention, in order to reduce the weight of the rear floor beam 2 and improve the strength and rigidity of the rear floor beam 2, the rear floor beam 2 in this embodiment is extruded from an aluminum alloy profile to The rear floor beam 2 is prevented from being tailor-welded from a plurality of steel parts, and since the material of the rear floor beam 2 is aluminum alloy, the weight of the rear floor beam 2 is further reduced and the weight of the rear floor beam 2 is further improved. The strength and rigidity of the rear floor cross member 2 further ensure that the vehicle body rear floor frame structure 100 is light in weight and high in strength and rigidity.
在本发明实施例中，为了减轻所述后轮罩1的重量并提高所述后轮罩1的强度和刚度，本实施例中的所述后轮罩1由铝合金铸造成型，以避免所述后轮罩1由多个钢制零件拼焊而成，并且由于所述后轮罩1的材料为铝合金，从而减轻了所述后轮罩1的重量并进一步提高了所述后轮罩1的强度和刚度，从而进一步确保所述车身后地板框架结构100的重量较轻且强度和刚度较高。In the embodiment of the present invention, in order to reduce the weight of the rear wheel cover 1 and improve the strength and rigidity of the rear wheel cover 1, the rear wheel cover 1 in this embodiment is cast from aluminum alloy to avoid the The rear wheel cover 1 is tailor-welded from a plurality of steel parts, and since the material of the rear wheel cover 1 is aluminum alloy, the weight of the rear wheel cover 1 is reduced and the rear wheel cover is further improved. 1, thereby further ensuring that the body rear floor frame structure 100 is light in weight and high in strength and rigidity.
此外，在本发明实施例中，需要说明的是，本实施例中的所述后罩轮1、所述后地板横梁2、所述后纵梁前段31和所述后纵梁后段32均由铝合金制成，以确保所述车身后地板框架结构100由铝合金制成，从而确保减轻所述车身后地板框架结构100的重量。In addition, in the embodiment of the present invention, it should be noted that the rear cover wheel 1, the rear floor beam 2, the front section 31 of the rear longitudinal beam and the rear section 32 of the rear longitudinal beam in this embodiment are all It is made of aluminum alloy to ensure that the vehicle body rear floor frame structure 100 is made of aluminum alloy, thereby ensuring that the weight of the vehicle body rear floor frame structure 100 is reduced.
结合图1、图2和图8所示，为了解决相同的技术问题，本发明还提供一种下车身框架结构，包括侧围结构200、前地板门槛梁300以及上述的车身后地板框架结构100，所述侧围结构200连接在所述后轮罩1上，所述前地板门槛梁300连接在所述后纵梁前段本体311上。1, 2 and 8, in order to solve the same technical problem, the present invention also provides a lower body frame structure, including a side wall structure 200, a front floor sill beam 300 and the above-mentioned body rear floor frame structure 100 , the side wall structure 200 is connected to the rear wheel house 1 , and the front floor sill beam 300 is connected to the front body 311 of the rear side member.
综上，本发明提供一种车身后地板框架结构100，包括后轮罩1、后地板横梁2和后纵梁3，后纵梁3包括后纵梁前段31和后纵梁后段32，后纵梁前段31包括后纵梁前段本体311以及与后纵梁前段本体311连接的接头结构312，后纵梁前段本体311与接头结构312由铝合金一体铸造成型；后轮罩1、后地板横梁2和纵梁后段32分别连接在接头结构312上。由于后纵梁前段本体311与接头结构312由铝合金一体铸造成型，因此能够将接头结构312集成在后纵梁前段本体311上，以避免在后地板横梁2上设置由后地板横梁上接头和后地板横梁下接头等多个钢制零件拼接而成的后地板横梁接头，从而减少了后地板横梁2的零件数量并简化了后地板横梁2上的拼焊结构，进而减轻了后地板横梁2的重量并提高了后地板横梁2的强度和刚度，以确保车身后地板框架结构100的重量较轻且强度和刚度较高。此外，后纵梁前段本体311与接头结构312由铝合金一体铸造成型不仅减轻了后纵梁前段31的重量，而且还提高了接头结构312与后轮罩1、后地板横梁2和纵梁后段32的连接强度和刚度，从而进一步确保车身后地板框架结构100的重量较轻且强度和刚度较高。To sum up, the present invention provides a rear floor frame structure 100 of a car body, including a rear wheel house 1, a rear floor beam 2 and a rear longitudinal beam 3. The rear longitudinal beam 3 includes a rear longitudinal beam front section 31 and a rear longitudinal beam rear section 32. The front section of the longitudinal beam 31 includes the front section body 311 of the rear side beam and the joint structure 312 connected with the front section body 311 of the rear side beam. 2 and the rear section 32 of the longitudinal beam are respectively connected to the joint structure 312. Since the front section body 311 of the rear longitudinal beam and the joint structure 312 are integrally casted by aluminum alloy, the joint structure 312 can be integrated on the front section body 311 of the rear longitudinal beam, so as to avoid setting the rear floor crossbeam upper joint and the rear floor crossbeam on the rear floor crossbeam 2. The rear floor beam joint spliced by multiple steel parts such as the lower joint of the rear floor beam 2 reduces the number of parts of the rear floor beam 2 and simplifies the tailor welding structure on the rear floor beam 2, thereby reducing the weight of the rear floor beam 2 The weight and increase the strength and rigidity of the rear floor beam 2 to ensure that the rear floor frame structure 100 of the vehicle body is light in weight and high in strength and rigidity. In addition, the body 311 of the front section of the rear longitudinal beam and the joint structure 312 are integrally cast by aluminum alloy, which not only reduces the weight of the front section 31 of the rear longitudinal beam, but also improves the connection between the joint structure 312 and the rear wheel house 1, the rear floor beam 2 and the rear side beam. The connection strength and rigidity of the segments 32 further ensure that the vehicle body rear floor frame structure 100 is light in weight and high in strength and rigidity.
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和替换，这些改进和替换也应视为本发明的保护范围。The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and replacements can also be made, these improvements and replacements It should also be regarded as the protection scope of the present invention.
Claims (7)
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| CN112441117B (en) * | 2019-08-30 | 2023-12-19 | 坤泰车辆系统（常州）有限公司 | Multifunctional joints for frame longitudinal beams, rear longitudinal beams and C-pillars and automobiles |
| 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 |
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