High-strength magnesium alloy automobile sheet

Abstract

This utility model relates to the field of magnesium alloy sheet technology and discloses a high-strength magnesium alloy automotive sheet, including a bottom magnesium alloy sheet. The bottom magnesium alloy sheet has a mounting groove at its top, and a first frame is fitted into the inner wall of the mounting groove. A second frame is positioned at the top of the first frame, and a top magnesium alloy sheet is provided on the surface of the second frame. Mounting pins are fixedly connected to the four corners of the bottom wall of the mounting groove, and mounting holes are provided at the four corners of the bottom end of the first frame. This utility model achieves precise component installation through pin hole positioning, avoiding stress concentration and ensuring even load distribution across the sheet layers, laying the foundation for overall high strength. Bolt fastening enhances the sheet's vertical load-bearing capacity and resistance to deformation, resisting pressure from above and below and preventing interlayer separation. A dovetail mechanism resists lateral forces at the joints, preventing breakage and misalignment, improving connection strength and stability. Furthermore, the installation process is simple and precise, reducing installation difficulty and time costs.

Description

Technical Field

[0001] This utility model relates to the field of magnesium alloy sheet technology, and in particular to a high-strength magnesium alloy automotive sheet. Background Technology

[0002] As the global automotive industry transforms towards "low-carbon and electrification," lightweighting has become a core technological path to reduce energy consumption and improve range. Magnesium alloys, due to their low density and high specific strength, can significantly reduce vehicle weight compared to traditional steel and aluminum alloys, thus becoming an ideal material to replace traditional steel and aluminum alloys and being widely used in vehicle body structural components, body panels, and other fields.

[0003] However, traditional magnesium alloy automotive sheet metal has problems such as insufficient impact resistance, significant vibration transmission, and poor connection reliability, making it difficult to meet the high strength requirements under complex automotive working conditions. Based on this, a high-strength magnesium alloy automotive sheet metal is proposed for improvement. Utility Model Content

[0004] In view of the aforementioned problems that existing technologies cannot meet the high strength requirements of automobiles under complex working conditions, this utility model is proposed.

[0005] To solve the above technical problems, the present invention provides the following technical solution: a high-strength magnesium alloy automotive sheet, comprising a bottom magnesium alloy sheet, wherein an installation groove is provided at the top of the bottom magnesium alloy sheet, a first frame is fitted into the inner wall of the installation groove, a second frame is provided at the top of the first frame, and a top magnesium alloy sheet is provided on the surface of the second frame.

[0006] Mounting pins are fixedly connected to the four corners of the bottom wall of the mounting groove. Mounting holes are opened at the four corners of the bottom end of the first frame. The mounting pins are fitted into the inner walls of the mounting holes. Connecting pins are fixedly connected to the four corners of the top end of the first frame. Connecting holes are opened at the four corners of the bottom end of the second frame. Connecting pins are fitted into the inner walls of the connecting holes. Connecting bolts are provided at the four corners of the top end of the second frame. The bottom end of the connecting bolt passes through the top end of the second frame and is threaded into the inside of the connecting pin.

[0007] As a preferred embodiment, the bottom magnesium alloy plate is fixedly connected to a base at both ends, and the top magnesium alloy plate is fixedly connected to a top seat at both ends.

[0008] As a preferred embodiment, a dovetail block is fixedly connected to the bottom end of the top seat, a dovetail groove is provided at the top end of the base, and the dovetail block is slidably connected to the inner wall of the dovetail groove.

[0009] As a preferred embodiment, fastening bolts are symmetrically arranged on one side of the bottom magnesium alloy plate, and one end of the fastening bolt passes through the side wall of the base and is threaded into the inside of the dovetail block.

[0010] As a preferred embodiment, a first baffle is fixedly connected to one side of the top of the bottom magnesium alloy plate, a first baffle groove is formed on the other side of the top of the bottom magnesium alloy plate, a second baffle is fixedly connected to one side of the bottom of the top magnesium alloy plate, a second baffle groove is formed on the other side of the bottom of the top magnesium alloy plate, one side of the second baffle is in contact with the inner wall of the first baffle groove, and one side of the first baffle is in contact with the inner wall of the second baffle groove.

[0011] As a preferred embodiment, the first frame has a honeycomb interlayer inside, the second frame has a foamed aluminum core layer inside, a honeycomb panel is fixedly connected to the inner wall of the first frame, a partition is integrally formed in the middle of the honeycomb panel, a top panel is fixedly connected to the top of the honeycomb panel, a bottom panel is fixedly connected to the bottom of the honeycomb panel, sound insulation cotton is filled between the partition and the top panel, and polyurethane foam is filled between the partition and the bottom panel.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects:

[0013] 1. This utility model achieves precise component installation by using pin hole positioning, avoiding stress concentration and ensuring that the load is evenly distributed across all layers of the board, laying the foundation for overall high strength; it enhances the vertical load-bearing capacity and deformation resistance of the board by using bolt fastening, resisting pressure from above and below and preventing interlayer separation; it uses a dovetail mechanism to resist lateral forces at the splicing points, avoiding breakage and misalignment, improving connection strength and stability, and the installation process is simple and precise, reducing installation difficulty and time costs.

[0014] 2. This utility model uses an aluminum foam core layer to absorb a large amount of impact energy when subjected to external impact, reducing the damage to the panels and body. The honeycomb panel, partition, top panel and bottom panel form a stable integrated structure, and the partition enhances the overall rigidity and stability. The sound insulation cotton and polyurethane foam filling not only play a functional role, but also further fix the honeycomb structure, prevent relative displacement of the components and extend the service life of the panels. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall disassembled structure of this utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure viewed from below;

[0017] Figure 3 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the first frame and the honeycomb interlayer in this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Bottom magnesium alloy plate; 11. Mounting groove; 12. Mounting pin; 13. First baffle; 14. First baffle groove; 2. First frame; 21. Mounting hole; 22. Connecting pin; 3. Second frame; 31. Connecting hole; 32. Connecting bolt; 4. Top magnesium alloy plate; 41. Second baffle; 42. Second baffle groove; 5. Honeycomb sandwich layer; 51. Honeycomb panel; 52. Partition; 53. Top panel; 54. Bottom panel; 6. Foam aluminum core layer; 7. Base; 71. Dovetail groove; 72. Top seat; 73. Dovetail block; 74. Fastening bolt. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Reference Figures 1-4 This is the first embodiment of the present utility model, which provides a high-strength magnesium alloy automotive sheet, including a bottom magnesium alloy sheet 1, an installation groove 11 is provided at the top of the bottom magnesium alloy sheet 1, a first frame 2 is fitted into the inner wall of the installation groove 11, a second frame 3 is provided at the top of the first frame 2, and a top magnesium alloy sheet 4 is provided on the surface of the second frame 3.

[0023] Mounting pins 12 are fixedly connected to the four corners of the bottom wall of the mounting groove 11. Mounting holes 21 are opened at the four corners of the bottom end of the first frame 2. The mounting pins 12 are fitted into the inner wall of the mounting holes 21. Connecting pins 22 are fixedly connected to the four corners of the top end of the first frame 2. Connecting holes 31 are opened at the four corners of the bottom end of the second frame 3. Connecting pins 22 are fitted into the inner wall of the connecting holes 31. Connecting bolts 32 are provided at the four corners of the top end of the second frame 3. The bottom end of the connecting bolts 32 passes through the top end of the second frame 3 and is threaded into the inside of the connecting pins 22.

[0024] Both ends of the bottom magnesium alloy plate 1 are fixedly connected to the base 7, and both ends of the top magnesium alloy plate 4 are fixedly connected to the top seat 72.

[0025] A dovetail block 73 is fixedly connected to the bottom of the top seat 72, and a dovetail groove 71 is opened at the top of the base 7. The dovetail block 73 is slidably connected to the inner wall of the dovetail groove 71.

[0026] A fastening bolt 74 is symmetrically arranged on one side of the bottom magnesium alloy plate 1. One end of the fastening bolt 74 passes through the side wall of the base 7 and is threaded into the inside of the dovetail block 73.

[0027] A first baffle 13 is fixedly connected to one side of the top of the bottom magnesium alloy plate 1, and a first baffle groove 14 is provided on the other side of the top of the bottom magnesium alloy plate 1. A second baffle 41 is fixedly connected to one side of the bottom of the top magnesium alloy plate 4, and a second baffle groove 42 is provided on the other side of the bottom of the top magnesium alloy plate 4. One side of the second baffle 41 is in contact with the inner wall of the first baffle groove 14, and one side of the first baffle 13 is in contact with the inner wall of the second baffle groove 42.

[0028] During use, first align the mounting holes 21 at the four corners of the bottom of the first frame 2 with the mounting pins 12, and fix the first frame 2 in the mounting groove 11 by fitting, so as to achieve horizontal positioning and initial fixation.

[0029] Next, align the connecting hole 31 of the second frame 3 with the connecting pin 22, and drop it vertically so that the connecting pin 22 is inserted into the connecting hole 31, thus completing the vertical positioning of the upper and lower frames. The connecting bolt 32 passes through the top of the second frame 3 and is threaded into the connecting pin 22, thus rigidly fixing the first frame 2 and the second frame 3 to ensure that the vertical force is evenly transmitted.

[0030] Finally, align the dovetail blocks 73 at the bottom of both ends of the top magnesium alloy plate 4 with the dovetail grooves 71 and slide them into the grooves in the horizontal direction to achieve rapid splicing and initial positioning of the top magnesium alloy plate 4 and the bottom magnesium alloy plate 1.

[0031] During the sliding process of the top magnesium alloy plate 4, the second baffle 41 of the top magnesium alloy plate 4 is embedded into the first baffle groove 14 of the bottom magnesium alloy plate 1, and at the same time, the first baffle 13 of the bottom magnesium alloy plate 1 is embedded into the second baffle groove 42 of the top magnesium alloy plate 4, which improves the stability of the overall structure. Then, one end of the fastening bolt 74 is passed through the base 7, and then the fastening bolt 74 is tightened to connect with the dovetail block 73, generating friction, locking the splicing position, and preventing the plate from separating or shifting laterally.

[0032] This design uses pinhole positioning to ensure accurate installation of each component, avoiding stress concentration caused by installation deviations. This allows the load to be evenly distributed across the layers of the board structure, providing a fundamental guarantee for overall high strength. Bolt tightening greatly enhances the board's load-bearing capacity and resistance to deformation in the vertical direction, effectively resisting pressure from above or below. This ensures that the board is not prone to interlayer separation or structural damage when subjected to large vertical loads. The dovetail mechanism effectively resists lateral forces at the joints of the boards, preventing breakage or misalignment at the joints and improving the overall connection strength and stability of the board. Moreover, the installation process is simple and the positioning is precise, significantly reducing installation difficulty and time costs.

[0033] Reference Figures 1-4This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: a honeycomb interlayer 5 is provided inside the first frame 2, a foamed aluminum core layer 6 is provided inside the second frame 3, a honeycomb panel 51 is fixedly connected to the inner wall of the first frame 2, a partition 52 is integrally formed in the middle of the honeycomb panel 51, a top panel 53 is fixedly connected to the top of the honeycomb panel 51, a bottom panel 54 is fixedly connected to the bottom of the honeycomb panel 51, sound insulation cotton is filled between the partition 52 and the top panel 53, and polyurethane foam is filled between the partition 52 and the bottom panel 54.

[0034] During use, the integrally formed partition 52 in the middle of the honeycomb panel 51 divides the interior of the honeycomb panel 51 into upper and lower spaces. The sound insulation cotton filled between the partition 52 and the top panel 53 can effectively absorb and block sound waves, reducing the transmission of external noise into the vehicle. The polyurethane foam filled between the partition 52 and the bottom panel 54 has good heat insulation and cushioning performance, which can reduce heat transfer and further enhance the cushioning and energy absorption effect of the panel. By filling different functional materials in layers, the structural strength and functionality are improved simultaneously, meeting the automotive industry's demand for high-performance panels. The porous structure of the aluminum foam core layer 6 allows the pores to deform and collapse when subjected to external impact, absorbing a large amount of impact energy and reducing the damage of impact force to the panel and the vehicle body.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high-strength magnesium alloy automotive sheet comprising a base magnesium alloy sheet (1), characterized in that: The bottom magnesium alloy plate (1) has an installation groove (11) at the top, and a first frame (2) is fitted into the inner wall of the installation groove (11). A second frame (3) is provided at the top of the first frame (2), and a top magnesium alloy plate (4) is provided on the surface of the second frame (3). Mounting pins (12) are fixedly connected to the four corners of the bottom wall of the mounting groove (11). Mounting holes (21) are opened at the four corners of the bottom end of the first frame (2). The mounting pins (12) are fitted into the inner wall of the mounting holes (21). Connecting pins (22) are fixedly connected to the four corners of the top end of the first frame (2). Connecting holes (31) are opened at the four corners of the bottom end of the second frame (3). The connecting pins (22) are fitted into the inner wall of the connecting holes (31). Connecting bolts (32) are provided at the four corners of the top end of the second frame (3). The bottom end of the connecting bolts (32) passes through the top end of the second frame (3) and is threaded into the inside of the connecting pins (22).

2. A high strength magnesium alloy automotive sheet according to claim 1, characterized by: The bottom magnesium alloy plate (1) is fixedly connected to a base (7) at both ends, and the top magnesium alloy plate (4) is fixedly connected to a top seat (72) at both ends.

3. A high strength magnesium alloy automotive sheet according to claim 2, characterized by: The bottom of the top seat (72) is fixedly connected to a dovetail block (73), and the top of the base (7) is provided with a dovetail groove (71), and the dovetail block (73) is slidably connected to the inner wall of the dovetail groove (71).

4. A high strength magnesium alloy automotive sheet according to claim 3, characterized by: The bottom magnesium alloy plate (1) is symmetrically provided with fastening bolts (74) on one side. One end of the fastening bolt (74) passes through the side wall of the base (7) and is threaded into the inside of the dovetail block (73).

5. The high-strength magnesium alloy automotive sheet metal according to claim 1, characterized in that: A first baffle (13) is fixedly connected to one side of the top of the bottom magnesium alloy plate (1), and a first baffle groove (14) is opened on the other side of the top of the bottom magnesium alloy plate (1). A second baffle (41) is fixedly connected to one side of the bottom of the top magnesium alloy plate (4), and a second baffle groove (42) is opened on the other side of the bottom of the top magnesium alloy plate (4). One side of the second baffle (41) is in contact with the inner wall of the first baffle groove (14), and one side of the first baffle (13) is in contact with the inner wall of the second baffle groove (42).

6. A high strength magnesium alloy automotive sheet according to claim 1, characterized by: The first frame (2) has a honeycomb sandwich layer (5) inside, the second frame (3) has a foam aluminum core layer (6) inside, the inner wall of the first frame (2) is fixedly connected to a honeycomb panel (51), a partition (52) is integrally formed in the middle of the honeycomb panel (51), a top panel (53) is fixedly connected to the top of the honeycomb panel (51), a bottom panel (54) is fixedly connected to the bottom of the honeycomb panel (51), sound insulation cotton is filled between the partition (52) and the top panel (53), and polyurethane foam is filled between the partition (52) and the bottom panel (54).

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