Sheet metal shell of fresh air system

Abstract

The utility model discloses a fresh air system sheet metal shell and belongs to the field of sheet metal shells. The fresh air system sheet metal shell comprises a bottom panel, end faces are arranged on the two sides of the upper surface of the bottom panel, lugs are arranged in the middles of the two sides, away from the end faces, of the bottom panel, floating holes are formed in the middles of the surfaces of one sides of the lugs, and extending section plates are arranged in the middles of the upper surfaces of the end faces. Side lugs are arranged on the two sides of the end face, a connecting ventilation groove is formed in the middle of the surface of one side of the end face, the inner space of the embedded clamping plate can be effectively compressed through continuous rotation and step-by-step pressure application of a pressing rivet nut on the embedded clamping plate, then the attaching degree of the embedded clamping plate and the extending section plate is further promoted, and the tighter connecting effect is achieved; according to the metal plate shell, the bottom panel and the cover panel are not only prevented from being loosened, but also the embedded clamping plate is made of rubber, so that the potential risk that the shell is damaged due to friction among parts is also ingeniously avoided, and the overall stability and durability of the metal plate shell are greatly enhanced.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal housing technology, specifically a sheet metal housing for a fresh air system. Background Technology

[0002] Sheet metal processing is a cold working process for thin metal sheets, including various steps such as cutting, bending, stamping, stretching, and welding. When manufacturing a sheet metal shell, the thin metal sheet is first cut according to the design requirements to obtain a blank of the required shape and size. Then, through bending and stamping processes, the blank is formed into a component with a certain curvature and shape. Finally, the components are connected together by welding and other methods to form a complete sheet metal shell.

[0003] In the construction of many equipment, sheet metal housings are an indispensable key component. However, the existing sheet metal housings have obvious defects in the installation process. During the snap-fit ​​operation, various factors often lead to assembly tolerances or wear due to friction between parts. These problems directly affect the installation process and performance of the sheet metal housing, making it difficult to maintain a stable state after installation, making it prone to loosening, and easily producing annoying abnormal noises during equipment operation.

[0004] Therefore, this utility model provides a sheet metal housing for a fresh air system to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This utility model provides a sheet metal shell for a fresh air system, aiming to solve the problem mentioned in the background art that existing sheet metal parts often experience assembly tolerances or frictional wear during the snap-fit ​​process, affecting the installation and use of the sheet metal parts, and thus causing the sheet metal parts to loosen after installation and easily produce abnormal noise.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: A bottom panel is provided, with end faces on both sides of its upper surface. Lugs are provided in the middle of the sides of the bottom panel away from the end faces. A floating hole is formed in the middle of one side surface of each lug. An extension plate is provided in the middle of the upper surface of each end face. Side ears are provided on both sides of each end face. A connecting ventilation groove is formed in the middle of one side surface of each end face. A cover panel is fixedly installed on the upper surface of the bottom panel. Recessed grooves are formed on both sides of the upper surface of the cover panel. Bending sheet metal is fixedly installed in the recessed grooves on both sides of the cover panel. The same floating hole is formed on one side surface of each bending sheet metal. Limiting ends are provided on both sides of the lower surface of the cover panel, with one side of each limiting end movably overlapping the sides of the end faces.

[0009] As a preferred technical solution of this application, a rivet nut is threaded into one side of the hole of the bent sheet metal, and an embedded clamping plate is connected through one end of the rivet nut. The embedded clamping plate is an elastic structure, and the upper surface of the embedded clamping plate is a hollow through structure, which is movably clamped to the periphery of the extension plate.

[0010] As a preferred technical solution of this application, a fixing hole is provided in the middle of one side surface of the embedded card plate, and a protruding end is provided in the middle of the inner side wall of the embedded card plate. One end of the rivet nut passes through the fixing hole and is threadedly connected to the protruding end.

[0011] As a preferred technical solution of this application, the bent sheet metal is inserted into the middle of the embedded card plate, and the protruding end abuts against one side of the bent sheet metal. There are two embedded cards, which are symmetrically distributed with the cover panel as the center point.

[0012] As a preferred technical solution of this application, a rivet bolt is slidably engaged in the connecting ventilation groove on one side of the end face, and a corner liner is fixedly installed at one end of the rivet bolt extending outside the connecting ventilation groove. A through hole is opened in the middle of one side surface of the corner liner.

[0013] As a preferred technical solution of this application, the corner liner is distributed on both sides of the end face by press-fit bolts, and a limit sleeve is movably installed in the through hole in the middle of the corner liner.

[0014] As a preferred technical solution of this application, a compression spring is fixedly installed on the back of the limiting bushing, and one end of the compression spring is connected through to the interior of the connecting ventilation groove.

[0015] (III) Beneficial Effects

[0016] 1. By continuously rotating and gradually applying pressure with the rivet nuts on the embedded plate, the internal space of the embedded plate is effectively compressed, thereby further improving its fit with the extension plate and achieving a tighter connection. This not only fundamentally avoids the loosening that may occur between the bottom panel and the cover panel, but also cleverly avoids the potential risk of shell damage caused by friction between components due to the rubber material of the embedded plate, greatly enhancing the overall stability and durability of the sheet metal shell.

[0017] 2. By connecting the ventilation slots and the compression springs, the impact on the entire structure can be effectively absorbed, thereby enhancing the impact resistance and stability of the shell. At the same time, since the corner liner can slide freely within the connecting ventilation slots, the ventilation volume of the connecting ventilation slots can be flexibly changed. Users can conveniently adjust the ventilation volume according to actual needs, such as the heat dissipation requirements of the equipment, thereby optimizing the airflow organization and heat exchange efficiency inside the equipment. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of a sheet metal casing for a fresh air system;

[0019] Figure 2 A schematic diagram showing the disassembly structure of the embedded card plate in the sheet metal shell of a fresh air system;

[0020] Figure 3 An exploded view of the overall structure of the sheet metal casing of a fresh air system;

[0021] Figure 4 A schematic diagram of the overall structure of the bottom panel of a sheet metal shell for a fresh air system;

[0022] Figure 5 This is a schematic diagram showing the disassembly of a corner liner of a sheet metal casing for a fresh air system.

[0023] In the picture:

[0024] 1. Bottom panel; 101. End face; 102. Lug; 103. Floating hole; 2. Extension plate; 3. Side lug; 4. Connecting ventilation slot; 5. Cover panel; 501. Limiting end; 6. Bending sheet metal; 7. Press-fit nut; 8. Embedded card plate; 801. Fixing hole; 802. Protruding end; 9. Press-fit bolt; 10. Corner liner; 11. Limiting bushing; 12. Compression spring; 13. Through hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides a sheet metal shell for a fresh air system, such as Figures 1 to 5As shown, the device includes a bottom panel 1. Both sides of the upper surface of the bottom panel 1 have end faces 101. Lugs 102 are located at the center of both sides of the bottom panel 1 away from the end faces 101. A floating hole 103 is formed at the center of one side of the lug 102. An extension plate 2 is located at the center of the upper surface of the end faces 101. Side ears 3 are located on both sides of the end faces 101. A connecting ventilation groove 4 is formed at the center of one side of the end faces 101. A cover panel 5 is fixedly installed on the upper surface of the bottom panel 1. Recessed grooves are formed on both sides of the upper surface of the cover panel 5. Bending sheet metal 6 is fixedly installed in the recessed grooves on both sides of the cover panel 5. The same floating hole 103 is formed on one side of the surface of the bending sheet metal 6. Limiting ends 501 are located on both sides of the lower surface of the cover panel 5. One side of the bent sheet metal 6 is movably connected to both sides of the end face 101. A rivet nut 7 is threaded into the hole on one side of the bent sheet metal 6. An embedded clamping plate 8 is connected through one end of the rivet nut 7. The embedded clamping plate 8 is an elastic structure. The upper surface of the embedded clamping plate 8 is a hollow through structure and is movably clamped to the periphery of the extension plate 2. A fixing hole 801 is opened in the middle of one side surface of the embedded clamping plate 8. A protruding end 802 is provided in the middle of the inner side wall of the embedded clamping plate 8. One end of the rivet nut 7 passes through the fixing hole 801 and is threadedly connected to the protruding end 802. The bent sheet metal 6 is inserted into the middle of the embedded clamping plate 8, and the protruding end 802 abuts against one side of the bent sheet metal 6. There are two embedded clamping plates 8, which are symmetrically distributed with the cover plate 5 as the center point.

[0027] In the installation process of the bottom panel 1 and the cover panel 5, the connecting base is first constructed by using the side ears 3 provided at both ends of the end face 101. When the cover panel 5 is installed from top to bottom, the side ears 3 located on its periphery can accurately abut against the outer walls of both ends of the cover panel 5. At the same time, the limiting ends 501 on both sides of the cover panel 5 will tightly abut against the inner arc surface of the end face 101. In this way, the initial pre-installation state is achieved in this mutual abutment method, laying a solid foundation for the subsequent more stable and precise installation work, and effectively improving the stability and reliability of the entire installation process.

[0028] Subsequently, an embedded retaining plate 8 is fitted around the periphery of the extension plate 2. The embedded retaining plate 8 has good elasticity and deformation capacity, and can fit tightly against both ends of the extension plate 2. According to the installation method of the cover plate 5, the bent sheet metal 6 on both sides of the cover plate 5 will be placed inside the embedded retaining plate 8. During this process, the protruding end 802 of the embedded retaining plate 8 will first form a stable abutment with the back of the bent sheet metal 6. At the same time, the floating hole 103 on the bent sheet metal 6 will precisely correspond to the fixing hole 801 on the embedded retaining plate 8. Then, the rivet nut 7 is passed through these two holes in sequence and threaded to the protruding end 802. The continuous rotation and gradual pressure of plate 7 effectively compress the internal space of the embedded plate 8, thereby further improving its fit with the extension plate 2 and achieving a tighter connection. This connection method not only fundamentally avoids the loosening that may occur between the bottom plate 1 and the cover plate 5, but also cleverly avoids the potential risk of shell damage caused by friction between components due to the rubber material of the embedded plate 8. This greatly enhances the overall stability and durability of the sheet metal shell, effectively extends its service life, reduces maintenance costs and usage risks caused by structural problems, and provides a reliable guarantee for the stable operation of the equipment.

[0029] A rivet bolt 9 is slidably engaged in the connecting ventilation groove 4 on one side of end face 101. An angle liner 10 is fixedly installed at one end of the rivet bolt 9 extending outside the connecting ventilation groove 4. A through hole 13 is opened in the middle of one side surface of the angle liner 10. The angle liner 10 is distributed on both sides of end face 101 by the rivet bolt 9. A limiting bushing 11 is movably installed in the through hole 13 in the middle of the angle liner 10. A compression spring 12 is fixedly installed on the back of the limiting bushing 11. One end of the compression spring 12 is connected through to the interior of the connecting ventilation groove 4.

[0030] Within the connecting ventilation slot 4 on the bottom panel 1, the corner liner 10 is fixedly installed using rivet bolts 9. The rear end of the corner liner 10 is fixed to the compression spring 12 by the limiting bushing 11, and the compression spring 12 is connected to the end face 101. In this way, when the sheet metal shell is subjected to external impact, part of the impact force can be effectively absorbed by the compression spring 12, thereby reducing the impact on the entire structure and enhancing the impact resistance and stability of the shell. At the same time, since the corner liner 10 connected by the rivet bolts 9 can slide freely within the connecting ventilation slot 4, the ventilation size of the connecting ventilation slot 4 can be flexibly changed. Users can conveniently adjust the ventilation volume according to actual needs, such as the heat dissipation requirements of the equipment, thereby optimizing the airflow organization and heat exchange efficiency inside the equipment.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fresh air system sheet metal shell comprising a bottom panel (1), characterized in that: The upper surface of the bottom panel (1) is provided with end faces (101) on both sides, the middle of the two sides of the bottom panel (1) away from the end face (101) is provided with lugs (102), the middle of one side surface of the lug (102) is provided with a floating hole (103), the middle of the upper surface of the end face (101) is provided with an extension section plate (2), both sides of the end face (101) are provided with side ears (3), the middle of one side surface of the end face (101) is provided with a connecting ventilation groove (4), the upper surface of the bottom panel (1) is fixedly provided with a cover panel (5), both sides of the upper surface of the cover panel (5) are provided with recessed grooves, the recessed grooves on both sides of the cover panel (5) are fixedly provided with bent metal sheets (6), the same floating hole (103) is provided on one side surface of the bent metal sheet (6), and the lower surface of the cover panel (5) is provided with limiting ends (501) on both sides.

2. The metal plate shell of a fresh air system according to claim 1, characterized in that: The bent metal sheet (6) is threadedly connected with a press-in nut (7) in the hole on one side, one end of the press-in nut (7) penetrates through and is connected with an embedded clamping plate (8), the embedded clamping plate (8) is of an elastic structure, the upper surface of the embedded clamping plate (8) is provided with a hollow penetrating structure and is movably clamped to the circumferential side of the extension section plate (2).

3. The metal shell of a fresh air system according to claim 2, characterized in that: The middle of one side surface of the embedded clamping plate (8) is provided with a fixed hole (801), the middle of the inner side wall of the embedded clamping plate (8) is provided with a protruding end (802), one end of the press-in nut (7) penetrates into the fixed hole (801) and is threadedly connected with the protruding end (802).

4. The metal shell of a fresh air system according to claim 3, characterized in that: The bent metal sheet (6) is inserted into the middle of the embedded clamping plate (8) and the protruding end (802) abuts against one side of the bent metal sheet (6), the number of the embedded clamping plates (8) is two and they are symmetrically distributed with the cover panel (5) as the center.

5. The metal shell of a fresh air system according to claim 1, characterized in that: The press-in bolt (9) is movably clamped in the connecting ventilation groove (4) on one side of the end face (101), one end of the press-in bolt (9) extending out of the connecting ventilation groove (4) is fixedly provided with an angle lining plate (10), and the middle of one side surface of the angle lining plate (10) is provided with a through hole (13).

6. The metal shell of a fresh air system according to claim 5, characterized in that: The angle lining plate (10) is distributed on both sides of the end face (101) through the press-in bolt (9), and the middle through hole (13) of the angle lining plate (10) is movably provided with a limiting shaft sleeve (11).

7. The metal shell of a fresh air system according to claim 6, characterized in that: The back of the limiting shaft sleeve (11) is fixedly provided with a compression spring (12), and one end of the compression spring (12) penetrates into the inside of the connecting ventilation groove (4).

Images