Front side member aluminum profile and processing method thereof

Abstract

This invention relates to the field of vehicle parts technology, and discloses a front longitudinal beam aluminum profile and its processing method. The profile includes a main longitudinal beam plate and a secondary longitudinal beam plate, which are fixedly connected to form an aluminum profile with through holes. The aluminum profile has straight sections and bent sections. Unlike existing technologies, the main longitudinal beam plate has a higher hardness than the secondary longitudinal beam plate. The main longitudinal beam plate has a first reinforcing member, and the secondary longitudinal beam plate has a second reinforcing member. The first and second reinforcing members are spliced ​​together to form a reinforcing assembly, located at the connection between the straight and bent sections. The second reinforcing member has a portion extending longitudinally into the first reinforcing member. The greater hardness of the main longitudinal beam plate compared to the secondary longitudinal beam plate, and the greater toughness of the secondary longitudinal beam plate compared to the main longitudinal beam plate, further improves its overall stability and ensures its overall stability. Furthermore, the cooperation between the first and second reinforcing members enhances its anti-collision performance.

Description

Technical Field

[0001] This invention relates to the field of aluminum profile technology for automobiles, and in particular to a front longitudinal beam aluminum profile and its processing method. Background Technology

[0002] The front longitudinal beam structure of an automobile is generally formed by stamping and welding profiles. Existing front longitudinal beams have straight and curved sections, with the curved section curving along the front fender between the engine compartment and the driver's cab. However, during a frontal collision, the connection between the straight and curved sections is prone to bending and collapse. Some existing technologies use screws or welding to install reinforcements at this connection, which increases assembly time to some extent. For example, Chinese patent CN223161846U, entitled "A Reinforcing Structure for an Automobile Front Longitudinal Beam," discloses a method of using filler material for support. Summary of the Invention

[0003] To address the technical problems existing in the background art, this invention proposes a front longitudinal beam aluminum profile and its processing method.

[0004] This invention proposes a front longitudinal beam aluminum profile, comprising a main longitudinal beam plate and a secondary longitudinal beam plate. The main longitudinal beam plate and the secondary longitudinal beam plate are fixedly connected to form an aluminum profile with through holes. This aluminum profile has a straight section and a bent section. Unlike existing technologies, the hardness of the main longitudinal beam plate is greater than that of the secondary longitudinal beam plate. The main longitudinal beam plate has a first reinforcing member, and the secondary longitudinal beam plate has a second reinforcing member. The first and second reinforcing members are spliced ​​together to form a reinforcing assembly, located at the connection between the straight and bent sections. The second reinforcing member has a portion extending longitudinally into the first reinforcing member. The greater hardness of the main longitudinal beam plate compared to the secondary longitudinal beam plate, and the greater toughness of the secondary longitudinal beam plate compared to the main longitudinal beam plate, further improves its overall stability and ensures its overall stability. Furthermore, the cooperation between the first and second reinforcing members enhances its impact resistance.

[0005] Preferably, the straight section of the main longitudinal beam is provided with a limiting post, and the side of the secondary longitudinal beam opposite to the limiting post is provided with an extension post, the extension post having a portion extending into the limiting post.

[0006] Preferably, the limiting post has a limiting hole, the extension post is vertically slidably installed in the limiting hole, and the bottom of the limiting hole is provided with an upper elastic element. When the longitudinal beam main plate is connected to the longitudinal beam sub plate, the extension hole extends into the limiting hole and compresses the upper elastic element.

[0007] Preferably, a reinforcing rod is fixedly connected to the side of the first reinforcing member opposite to the limiting post, the other end of the reinforcing rod is connected to the limiting post, and the reinforcing rod can slide vertically relative to the limiting post.

[0008] To further improve its performance in frontal impact, preferably, a sliding post is vertically slidably installed in the limiting hole, the bottom end of the upper elastic member is fixed to the top of the sliding post, the outer side wall of the limiting post has a connecting hole communicating with the limiting hole, an external connector is fixed on the sliding post, the external connector extends out of the connecting hole and is connected to the reinforcing rod.

[0009] Preferably, a lower elastic element is provided between the bottom of the sliding column and the limiting hole, and the lower elastic element is capable of elastic deformation in the vertical direction.

[0010] Preferably, the first reinforcing member of the base plate has a plurality of first holes in the vertical direction, and / or the second reinforcing member has a plurality of second holes.

[0011] Preferably, the plurality of first holes are interconnected, the outer wall of the first reinforcement has a first sound-absorbing hole communicating with the first hole, and / or the plurality of second holes are interconnected, the outer wall of the second reinforcement has a second sound-absorbing hole communicating with the second hole.

[0012] Preferably, the first reinforcement member has a limiting groove on its side wall, and the second reinforcement member has a limiting strip that matches the limiting groove.

[0013] A method for processing aluminum profiles for front longitudinal beams, comprising the following steps: positioning the main longitudinal beam plate and the secondary longitudinal beam plate opposite each other, and making the first and second reinforcing members contact each other, extending the extension column on the secondary longitudinal beam plate into the limiting hole on the main longitudinal beam plate and pressing the elastic member, and then fixing the main longitudinal beam plate and the secondary longitudinal beam plate by welding.

[0014] In this invention, the proposed front longitudinal beam aluminum profile and its processing method allow for the improvement of the overall performance of the relatively complex longitudinal beam main plate through casting followed by heat treatment, grinding, and other material removal processes. The relatively simple longitudinal beam sub-plate can be processed through casting followed by stamping and other processes to achieve a higher hardness for the longitudinal beam main plate than for the longitudinal beam sub-plate. Then, the longitudinal beam main plate and the longitudinal beam sub-plate are positioned relative to each other so that the first and second reinforcement components cooperate, and the longitudinal beam main plate and the longitudinal beam sub-plate are fixed by welding to achieve their connection and increase their anti-collision performance.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may become apparent by practice of the invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the longitudinal beam main board structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the reinforcing rod connection in some embodiments of the present invention;

[0019] Figure 4 This is a schematic diagram of the longitudinal beam subplate structure of the present invention;

[0020] In the diagram: 1. Main longitudinal beam plate; 2. Sub-main longitudinal beam plate; 3. First reinforcing member; 30. Fixing hole; 31. First hole; 32. First sound-absorbing hole; 33. Limiting groove; 4. Second reinforcing member; 40. Fixing post; 41. Second hole; 42. Second sound-absorbing hole; 43. Limiting strip; 5. Limiting post; 50. Limiting hole; 51. Connecting hole; 6. Extension post; 7. Upper elastic element; 8. Reinforcing rod; 9. Sliding post; 10. External connecting part; 11. Lower elastic element. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] like Figure 1 - Figure 2 The diagram illustrates a front longitudinal beam aluminum profile, comprising a main longitudinal beam plate 1 and a secondary longitudinal beam plate 2. The main longitudinal beam plate 1 and the secondary longitudinal beam plate 2 are fixedly connected to form an aluminum profile with through holes. This aluminum profile has straight sections and bent sections. The hardness of the main longitudinal beam plate 1 is greater than that of the secondary longitudinal beam plate 2. The main longitudinal beam plate 1 has a first reinforcing member 3, and the secondary longitudinal beam plate 2 has a second reinforcing member 4. The first reinforcing member 3 and the second reinforcing member 4 are spliced ​​together to form a reinforcing assembly located at the connection between the straight and bent sections. The second reinforcing member 4 has a portion extending longitudinally into the first reinforcing member 3. The main longitudinal beam plate 1 can be cast and then subjected to heat treatment, grinding, and other material removal processes to improve its overall performance. The relatively simple secondary longitudinal beam plate 2 can be cast and then processed through stamping and other processes. This ensures that the hardness of the main longitudinal beam plate 1 is greater than that of the secondary longitudinal beam plate 2, and the toughness of the secondary longitudinal beam plate 2 is greater than that of the main longitudinal beam plate 1, further improving its overall stability. Furthermore, the cooperation of the first reinforcing member 3 and the second reinforcing member 4 enhances its anti-collision performance.

[0023] Specifically, the longitudinal beam main plate 1 includes a base plate and a first side plate, the base plate and the first side plate form an L-shaped structure, the first reinforcement 3 is integrally formed with the first side plate and the base plate, and the first reinforcement 3 has a fixing hole 30 along its vertical direction.

[0024] The longitudinal beam sub-plate 2 includes a top plate and a second side plate, which form an L-shaped structure. The second reinforcement 4 is fixed on the top plate and has a part that is fixedly connected to the second side plate.

[0025] The second reinforcement member 4 includes a vertical fixing post 40, which extends into the fixing hole 30 of the first reinforcement member 3. The fixing hole 30 can be a through hole, and the fixing post 40 can be fixed to the first reinforcement member 3 by welding.

[0026] During installation, the second side plate of the longitudinal beam sub-plate 2 is brought into contact with the bottom plate, and the first side plate of the longitudinal beam main plate 1 is brought into contact with the top plate. The fixing post is located in the fixing hole 30. The fixing hole 30 and the fixing post can fix the relative positions of the longitudinal beam main plate 1 and the longitudinal beam sub-plate 2. Then, they are fixed by welding.

[0027] To further enhance its stability, preferably, the straight section of the main longitudinal beam 1 is provided with a limiting post 5, and the side of the secondary longitudinal beam 2 opposite to the limiting post 5 is provided with an extension post 6, the extension post 6 having a portion extending into the limiting post 5; the limiting post 5 has a limiting hole 50, and the extension post 6 is vertically slidably installed in the limiting hole 50; during installation, the extension post 6 is positioned in the limiting hole 50, which on the one hand increases its overall stability, and on the other hand can fix the relative position of the main longitudinal beam 1 and the secondary longitudinal beam 2.

[0028] Preferably, an upper elastic element 7 is provided in the limiting hole 50. When the main longitudinal beam 1 and the secondary longitudinal beam 2 are connected, the extension hole extends into the limiting hole 50 and compresses the upper elastic element 7. The upper elastic element 7 can be a spring. The setting of the upper elastic element 7 can achieve the vibration reduction effect during use to increase its anti-collision performance.

[0029] To further enhance the frontal collision protection performance of the vehicle, preferably, a reinforcing rod 8 is fixedly connected to the side of the first reinforcing member 3 opposite to the limiting post 5. The reinforcing rod 8 is made of metal and can be fixed to the first reinforcing member 3 by welding. The other end of the reinforcing rod 8 is connected to the limiting post 5, and the reinforcing rod 8 can slide vertically relative to the limiting post 5.

[0030] To further improve its performance in frontal impact, preferably, a sliding post 9 is vertically slidably installed in the limiting hole 50, the bottom end of the upper elastic member 7 is fixed to the top of the sliding post 9, the outer side wall of the limiting post 5 has a connecting hole 51 communicating with the limiting hole 50, an outer connector 10 is installed on the sliding post 9, the outer connector 10 extends out of the connecting hole 51 and is connected to the reinforcing rod 8.

[0031] Preferably, a lower elastic element 11 is provided between the bottom of the sliding column 9 and the limiting hole 50. The lower elastic element 11 can be a spring. The lower elastic element 11 can undergo elastic deformation in the vertical direction, further improving its overall resistance to frontal impact.

[0032] Preferably, the first reinforcement member 3 of the base plate has multiple first holes 31 along the vertical direction, and the second reinforcement member 4 has multiple second holes 41, in order to reduce its overall weight.

[0033] Preferably, the multiple first holes 31 are interconnected, the outer wall of the first reinforcement 3 has a first sound-absorbing hole 32 that communicates with the first hole 31, the multiple second holes 41 are interconnected, and the outer wall of the second reinforcement 4 has a second sound-absorbing hole 42 that communicates with the second hole 41. The noise reduction function is further enhanced by the connection between the first sound-absorbing hole 32, the second sound-absorbing hole 42 and the first through hole and the second through hole, which can handle some of the noise during vehicle operation.

[0034] Preferably, the side wall of the first reinforcement member 3 has a limiting groove 33, and the second reinforcement member 4 has a limiting strip 43 that matches the limiting groove 33, so as to further realize the positioning of the first reinforcement member 3 and the second reinforcement member 4.

[0035] A method for processing aluminum profiles for front longitudinal beams, used to process the aforementioned aluminum profiles, includes the following steps:

[0036] Place the lower elastic member 11 in the limiting hole 50, and slide the sliding column 9 vertically in the limiting hole 50. The outer wall of the sliding column 9 also has a connecting groove. Then press the sliding column 9 down to squeeze the lower elastic member 11 so that the groove connects with the connecting hole 51. Then slide the outer connector 10 to pass through the connecting hole 51 and the groove. Connect the outer connector 10 to the reinforcing rod 8 by welding. Then slide the outer connector 10 so that the reinforcing rod 8 contacts the first reinforcing member 3 and connect the reinforcing rod 8 to the first reinforcing member 3 by welding.

[0037] The longitudinal beam main plate 1 and the longitudinal beam secondary plate 2 are opposite to each other, and the first reinforcement 3 and the second reinforcement 4 are in contact. The extension column 6 on the longitudinal beam secondary plate 2 extends into the limiting hole 50 on the longitudinal beam main plate 1 and presses the elastic member 7. Then, the longitudinal beam main plate 1 and the longitudinal beam secondary plate 2 are fixed by welding.

[0038] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A front longitudinal beam aluminum profile, comprising a longitudinal beam main plate (1) and a longitudinal beam sub-plate (2), wherein the longitudinal beam main plate (1) and the longitudinal beam sub-plate (2) are fixedly connected to form an aluminum profile with through holes, the aluminum profile having a straight section and a bent section, characterized in that, The hardness of the main longitudinal beam (1) is greater than that of the secondary longitudinal beam (2). The main longitudinal beam (1) has a first reinforcing member (3), and the secondary longitudinal beam (2) has a second reinforcing member (4). The first reinforcing member (3) and the second reinforcing member (4) are spliced ​​together to form a reinforcing component. The reinforcing component is located at the connection between the straight section and the bent section. The second reinforcing member (4) has a portion that extends longitudinally into the first reinforcing member (3).

2. The front longitudinal beam aluminum profile according to claim 1, characterized in that, The straight section of the main longitudinal beam (1) is provided with a limiting post (5), and the side of the secondary longitudinal beam (2) opposite to the limiting post (5) is provided with an extension post (6), the extension post (6) having a portion extending into the limiting post (5).

3. The front longitudinal beam aluminum profile according to claim 2, characterized in that, The limiting post (5) has a limiting hole (50), and the extension post (6) is vertically slidably installed in the limiting hole (50). The bottom of the limiting hole (50) is provided with an upper elastic element (7). When the main plate of the longitudinal beam (1) is connected to the secondary plate of the longitudinal beam (2), the extension hole extends into the limiting hole (50) and compresses the upper elastic element (7).

4. The front longitudinal beam aluminum profile according to claim 3, characterized in that, The first reinforcing member (3) has a reinforcing rod (8) fixedly connected to the side opposite to the limiting post (5). The other end of the reinforcing rod (8) is connected to the limiting post (5), and the reinforcing rod (8) can slide vertically relative to the limiting post (5).

5. The front longitudinal beam aluminum profile according to claim 4, characterized in that, A sliding column (9) is vertically slidably installed inside the limiting hole (50). The bottom end of the upper elastic member (7) is fixed to the top of the sliding column (9). The outer side wall of the limiting column (5) has a connecting hole (51) that communicates with the limiting hole (50). An outer connector (10) is fixed on the sliding column (9). The outer connector (10) extends out of the connecting hole (51) and is connected to the reinforcing rod (8).

6. The front longitudinal beam aluminum profile according to claim 5, characterized in that, A lower elastic element (11) is provided between the bottom of the sliding column (9) and the limiting hole (50), and the lower elastic element (11) can undergo elastic deformation in the vertical direction.

7. The front longitudinal beam aluminum profile according to claim 1, characterized in that, The first reinforcement member (3) of the base plate has a plurality of first holes (31) in the vertical direction; and / or, the second reinforcement member (4) has a plurality of second holes (41).

8. The front longitudinal beam aluminum profile according to claim 7, characterized in that, The plurality of first holes (31) are interconnected, and the outer wall of the first reinforcement member (3) has a first sound-absorbing hole (32) that communicates with the first hole (31); and / or, the plurality of second holes (41) are interconnected, and the outer wall of the second reinforcement member (4) has a second sound-absorbing hole (42) that communicates with the second hole (41).

9. The front longitudinal beam aluminum profile according to claim 1, characterized in that, The first reinforcement member (3) has a limiting groove (33) on its side wall, and the second reinforcement member (4) has a limiting strip (43) that matches the limiting groove (33).

10. A method for processing aluminum profiles for front longitudinal beams, characterized in that, The process includes the following steps: placing the main longitudinal beam (1) and the secondary longitudinal beam (2) opposite each other, and making the first reinforcement (3) and the second reinforcement (4) in contact, so that the extension post (6) on the secondary longitudinal beam (2) extends into the limiting hole (50) on the main longitudinal beam (1) and presses the elastic element (7), and then fixing the main longitudinal beam (1) and the secondary longitudinal beam (2) by welding.

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