A table top structure based on an aluminum alloy die-cast skeleton

Abstract

The utility model discloses a table board structure based on aluminium alloy die casting framework relates to the technical field of automotive parts, including table board outer plate, table board inner plate, aluminium alloy die casting plate, metal clip, bolt bush, connecting rod assembly, the aluminium alloy die casting plate is integrally die casting formed plate -like framework, the metal clip fixed mounting on the aluminium alloy die casting plate, the bolt bush is pressed in the aluminium alloy die casting plate and the connecting rod assembly, the connecting rod assembly with the aluminium alloy die casting plate rotatory connection, table board inner plate with the aluminium alloy die casting plate fixed connection, table board outer plate with the metal clip joint cooperation and can be detachably installed below table board inner plate. The utility model discloses a integrally formed aluminium alloy die casting plate replaces traditional multiple stamping welded framework, and combines optimized assembly technology and tolerance design, effectively solved the problem, such as big, the tolerance accumulation leads to the abnormal sound of table board weight, high cost and buckle easy to damage etc.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a table structure based on an aluminum alloy die-cast frame. Background Technology

[0002] Existing car seat tray tables are mostly made of metal sheets through processes such as stamping, bending, and welding. This traditional solution has many drawbacks: First, the steel frame is heavy, making the table bulky, which is not conducive to handling and moving, and hinders vehicle weight reduction; second, the cumulative tolerances of the multi-component welding process are large, affecting assembly accuracy and product consistency, and easily causing abnormal noises during stress or use; third, in order to connect components and fix the panel, a large number of screws or complex clip structures are often used, which is not only costly, but also prone to loosening or damage after repeated disassembly, reducing the maintainability and lifespan of the product.

[0003] Therefore, a lightweight, high-precision, low-cost tabletop structure that can be repeatedly disassembled and reassembled is needed. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model provides a lightweight, high-precision assembly, noiseless, and durable table frame structure.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A tabletop structure based on an aluminum alloy die-cast frame includes an outer tabletop panel, an inner tabletop panel, an aluminum alloy die-cast plate, metal clips, bolt bushings, and a connecting rod assembly. The aluminum alloy die-cast plate is a one-piece die-cast plate-shaped frame. The metal clips are fixedly installed on the aluminum alloy die-cast plate. The bolt bushings are pressed onto the aluminum alloy die-cast plate and the connecting rod assembly. The connecting rod assembly is rotatably connected to the aluminum alloy die-cast plate. The inner tabletop panel is fixedly connected to the aluminum alloy die-cast plate. The outer tabletop panel is engaged with the metal clips and detachably installed below the inner tabletop panel.

[0007] Preferably, the assembly further includes a fixed bracket, and the linkage assembly is connected to the fixed bracket.

[0008] Preferably, the linkage assembly includes upper left and right linkages and lower left and right linkages.

[0009] Preferably, the left and right upper connecting rods are connected to the fixed bracket via stepped bolts and bolt bushings.

[0010] Preferably, the left and right lower connecting rods are pressed together with the fixed bracket by a washer and a stepped rivet.

[0011] Preferably, the fit tolerance between the metal clip and the mounting groove on the aluminum alloy die-cast plate is 4.3 mm to 4.4 mm.

[0012] Preferably, the material density of the aluminum alloy die-cast plate is 2700-2900 kg / m³. 3 .

[0013] By adopting the above technical solution, the beneficial effects of this utility model compared with the prior art are:

[0014] 1. The tabletop structure based on the aluminum alloy die-cast frame of this utility model is significantly lightweight: by adopting a low-density aluminum alloy one-piece die-cast frame, the overall weight of the tabletop is greatly reduced while ensuring the same or even higher structural strength.

[0015] 2. The tabletop structure based on an aluminum alloy die-cast frame of this utility model has optimized costs: the one-piece die-casting process reduces the number of parts, stamping dies and welding processes, simplifies the supply chain and production process, and reduces the overall manufacturing cost.

[0016] 3. The tabletop structure based on the die-cast aluminum alloy frame of this utility model has high precision and no abnormal noise: the one-piece molding avoids the tolerance of splicing and welding, and the optimized design of the metal clips to meet the tolerance (4.3mm-4.4mm) completely solves the assembly gap and abnormal noise problems caused by the accumulation of tolerance in traditional frames;

[0017] 4. The tabletop structure based on the die-cast aluminum alloy frame of this utility model has high durability and maintainability: the metal clips are directly installed on the sturdy die-cast frame, which improves the stress condition and makes it less prone to damage after multiple disassembly and snapping. The outer panel of the tabletop can be disassembled and assembled quickly without damage, which is convenient for maintenance, cleaning or replacement, and improves the service life and recycling value of the product.

[0018] 5. The tabletop structure based on the aluminum alloy die-cast frame of this utility model has good assembly processability: the modular sub-assembly assembly method has clear steps, is easy to achieve standardized operation, and improves production efficiency and product consistency. Attached Figure Description

[0019] Other objects and results of this invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings:

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is an exploded view of this utility model;

[0022] Figure 3This is an assembly diagram of the present invention;

[0023] The reference numerals in the accompanying drawings include: outer table panel 1, inner table panel 2, aluminum alloy die-cast plate 3, metal clip 4, bolt bushing 5, connecting rod assembly 6, fixed bracket 7, mounting groove 31, left upper connecting rod 61, right upper connecting rod 62, left lower connecting rod 63, right lower connecting rod 64, step bolt 65, washer 66, step rivet 67, and decorative cover plate 68. Detailed Implementation

[0024] The technical solutions of various embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. It should be pointed out that all accompanying drawings are exemplary representations. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0028] Reference Figures 1 to 3 , Figure 1 This is a perspective view of the present invention. Figure 2 This is an exploded view of this utility model. Figure 3This is an assembly diagram of the present invention. The present invention provides a tabletop structure based on an aluminum alloy die-cast frame, including an outer tabletop 1, an inner tabletop 2, an aluminum alloy die-cast plate 3, metal clips 4, bolt bushings 5, a connecting rod assembly 6, and a fixing bracket 7. The aluminum alloy die-cast plate 3 is an integrally die-cast plate-shaped frame. The metal clips 4 are fixedly installed on the aluminum alloy die-cast plate 3. The bolt bushings 5 ​​are pressed onto the aluminum alloy die-cast plate 3 and the connecting rod assembly 6. The connecting rod assembly 6 is rotatably connected to the aluminum alloy die-cast plate 3. The inner tabletop 2 is fixedly connected to the aluminum alloy die-cast plate 3. The outer tabletop 1 is engaged with the metal clips 4 and detachably installed below the inner tabletop 2. The connecting rod assembly 6 is connected to the fixing bracket 7, and the fixing bracket 7 is fixedly installed on the seat back frame. The core of this application lies in using a one-piece molded aluminum alloy die-cast plate as the structural skeleton. Through this structure, the density of the aluminum alloy die-cast part (2700-2900Kg / m³) is reduced. 3 ) is much lower than that of iron parts (approximately 7800 kg / m 3 This process achieves significant weight reduction. The integrated die-casting process ensures the dimensional accuracy and structural consistency of the skeleton, fundamentally reducing the accumulation of tolerances and stress concentration caused by welding or splicing. In a more preferred embodiment, the material density of the aluminum alloy die-cast plate 3 is 2800 kg / m³. 3 .

[0029] In one embodiment, the linkage assembly 6 of this application includes a left upper linkage 61, a right upper linkage 62, a left lower linkage 63, and a right lower linkage 64. The left upper linkage 61 and the right upper linkage 62 are connected to the fixed bracket 7 via stepped bolts 65 and bolt bushings 5. The left lower linkage 63 and the right lower linkage 64 are pressed to the fixed bracket 7 via washers 66 and stepped rivets 67. Two decorative cover plates 68 are connected to the aluminum alloy die-cast plate 3. The linkage assembly 6, the fixed bracket 7, and the aluminum alloy die-cast plate 3, when connected, form a complete linkage support system, providing stable support and connection functions, and constituting a rigid overall frame assembly.

[0030] In one embodiment, the fit tolerance between the metal clip 4 and the mounting groove 31 on the aluminum alloy die-cast plate 3 is 4.3mm to 4.4mm. The inventors found through experiments that tightening the original design tolerance of 4.4mm-4.5mm to this range can effectively eliminate the shaking and abnormal noise generated after the outer panel of the table is snapped together, and significantly improve the user experience and product quality.

[0031] The following will refer to Figures 1 to 3 The working principle of this utility model will be explained.

[0032] Prepare a one-piece die-cast aluminum alloy plate 3. Using a special pressing tool, press the bolt bushing 5 into the pre-set mounting holes on the die-cast plate 3. At the same time, precisely install the metal clip 4 into the specially designed clip mounting slot 31 on the die-cast plate 3. This is a critical quality control point. It is necessary to ensure that the mating dimensions between the metal clip 4 and the mounting slot 31 are strictly controlled within a tolerance range of 4.3mm to 4.4mm. This part of the assembly is called Assembly I.

[0033] Prepare the left upper connecting rod 61, right upper connecting rod 62, left lower connecting rod 63, and right lower connecting rod 64. Use a crimping tool to crimp the bolt bushings 5 ​​into the corresponding connecting holes at the ends of each connecting rod. The left upper connecting rod 61 and right upper connecting rod 62 are screwed onto the left and right fixed brackets 7 using stepped bolts 65 and bolt bushings 5, assembling assembly II; the left lower connecting rod 63 and right lower connecting rod 64 are crimped onto assembly II using washers 66 and stepped rivets 67 to form assembly III; assemblies I, II, and III are screwed together using stepped bolts 65 and washers 66, assembling assembly IV; the inner panel 2 of the table is screwed onto assembly IV, assembling assembly V; the outer panel 1 of the table is snapped onto assembly V. The table assembly is now complete. Due to precise tolerance control, the snapping process is smooth and there is no looseness after it is in place, effectively eliminating abnormal noise. When the tabletop needs to be replaced or maintained, simply pry it from the edge to detach the outer panel 1 from the metal clip 4 for non-destructive disassembly, and then proceed to the next step. The operation is very convenient.

[0034] This utility model discloses a tabletop structure based on an aluminum alloy die-cast frame, which is significantly lightweight: It adopts a low-density aluminum alloy one-piece die-cast frame, greatly reducing the overall weight of the tabletop while ensuring equal or even higher structural strength; cost optimization: One-piece die-casting reduces the number of parts, stamping dies, and welding processes, simplifying the supply chain and production process, and reducing overall manufacturing costs; high precision and noise-free operation: One-piece molding avoids welding tolerances, and combined with the optimized design of the metal clip tolerance (4.3mm-4.4mm), it completely solves the assembly gap and noise problems caused by the accumulation of tolerances in traditional frames; high durability and maintainability: The metal clips are directly installed on the robust die-cast frame, improving stress conditions and making them less prone to damage after repeated disassembly and reassembly. The outer panel of the tabletop can be quickly and non-destructively disassembled, facilitating maintenance, cleaning, or replacement, thus improving the product's service life and recycling value; good assembly processability: The modular sub-assembly method has clear steps, making it easy to achieve standardized operations, improving production efficiency and product consistency.

[0035] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A tabletop structure based on an aluminum alloy die-cast frame, characterized in that, The device includes an outer tabletop, an inner tabletop, an aluminum alloy die-cast plate, metal clips, bolt bushings, and a connecting rod assembly. The aluminum alloy die-cast plate is a one-piece die-cast plate-shaped frame. The metal clips are fixedly installed on the aluminum alloy die-cast plate. The bolt bushings are pressed onto the aluminum alloy die-cast plate and the connecting rod assembly. The connecting rod assembly is rotatably connected to the aluminum alloy die-cast plate. The inner tabletop is fixedly connected to the aluminum alloy die-cast plate. The outer tabletop is engaged with the metal clips and is detachably installed below the inner tabletop.

2. The tabletop structure based on an aluminum alloy die-cast frame according to claim 1, characterized in that, It also includes a fixed bracket, and the linkage assembly is connected to the fixed bracket.

3. A tabletop structure based on an aluminum alloy die-cast frame according to claim 2, characterized in that, The linkage assembly includes upper left and right linkages and lower left and right linkages.

4. A tabletop structure based on an aluminum alloy die-cast frame according to claim 3, characterized in that, The left and right upper connecting rods are connected to the fixed bracket via stepped bolts and bolt bushings.

5. A tabletop structure based on an aluminum alloy die-cast frame according to claim 3, characterized in that, The left and right lower connecting rods are pressed together with the fixed bracket by washers and stepped rivets.

6. A tabletop structure based on an aluminum alloy die-cast frame according to claim 1, characterized in that, The fit tolerance between the metal clip and the mounting groove on the aluminum alloy die-cast plate is 4.3 mm to 4.4 mm.

7. A tabletop structure based on an aluminum alloy die-cast frame according to claim 1, characterized in that, The material density of the aluminum alloy die-cast plate is 2700-2900 kg / m³. 3 .

Images