Sheet metal rack convenient to disassemble and assemble
The design of the square tube frame and locking fasteners solves the problem of time-consuming and labor-intensive disassembly of sheet metal frames, enabling rapid disassembly and assembly, improving operational efficiency and structural stability, and reducing maintenance costs.
Patent Information
- Application Number
- CN202520986887.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-05-20
AI Technical Summary
Existing sheet metal frames are time-consuming and labor-intensive to disassemble and assemble, or require destructive disassembly, resulting in high maintenance costs and material waste.
The square tube frame structure, combined with locking fasteners, springs, wedge blocks, and adjusting bolts, enables rapid and stable assembly and disassembly of sheet metal parts. The limiting plate and positioning pins ensure precise engagement, and the adjusting bolts feature an internal hexagonal groove design to improve operational accuracy and safety.
It enables rapid disassembly and assembly of sheet metal frames, improving operational efficiency, reducing maintenance time and material waste, and enhancing structural stability and safety.
Smart Images

Figure CN223978922U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sheet metal frame technology, and in particular to a sheet metal frame that is easy to disassemble and assemble. Background Technology
[0002] In modern industrial equipment, communication cabinets, and automated production lines, sheet metal racks serve as crucial structural components supporting various instruments, modules, or mechanical parts. Their design and manufacturing are essential for ensuring the stability and efficient operation of the equipment. Traditionally, sheet metal racks are assembled using welding or bolting. However, with increasing demands for ease of maintenance and cost-effectiveness in the industrial sector, these two traditional sheet metal rack assembly methods have gradually revealed their limitations.
[0003] Once the welding process of existing sheet metal frames is completed, partial disassembly is almost impossible. If internal components need to be replaced or repaired, destructive disassembly is often required, which not only increases maintenance costs but may also lead to unnecessary material waste and time consumption. On the other hand, although bolt-fixed frames have a certain degree of disassembly, allowing users to replace and maintain components without damaging the structure, in actual operation, a large number of screws need to be tightened and loosened one by one. This process is both time-consuming and labor-intensive, especially when facing high-frequency maintenance needs in large-scale production environments. Therefore, we propose a sheet metal frame that is easy to disassemble and assemble to optimize the structure of existing sheet metal frames. Utility Model Content
[0004] In order to overcome the shortcomings of the prior art, the present invention provides a sheet metal frame that is easy to disassemble and assemble.
[0005] A sheet metal frame that is easy to disassemble and assemble includes a square tube frame, which is the main frame of the sheet metal frame. The square tube frame is a square frame structure with no less than two layers of open structure. Support legs are fixedly installed at the four corners of the bottom of the square tube frame. A door panel is hinged to the front side of each layer of the square tube frame. The frame also includes sheet metal parts, clip frames, guide rods, and locking devices. Sheet metal parts are clipped onto the frame openings on the square tube frame, except for the door panel side. The square tube frame has protruding clip frames fixedly connected at both ends. The clip frames are double-layered frame structures. Each frame of the square tube frame is a square hollow frame. Multiple guide rods are fixedly connected inside the square tube frame. A locking fastener is slidably installed on the side of the square tube frame near the sheet metal part through the guide rods. A spring is sleeved around the guide rod between the locking fastener and the square tube frame. The clip frame of the sheet metal part has a slot for matching the locking fastener. An adjusting component for adjusting the locking fastener is also provided inside the square tube frame.
[0006] To further explain, the locking component consists of a mounting plate and a wedge block. The mounting plate is slidably connected to the guide rod inside the square tube frame, and the wedge block is fixedly connected to the mounting plate. The wedge block is adapted to and engages with the slot on the frame. The wedge block slides through to the outside of the square tube frame, and the inclined surface of the wedge block faces the direction of the sliding engagement of the sheet metal part.
[0007] To further explain, the adjusting component includes a support plate, an adjusting bolt, and a sliding plate. The support plate is fixedly connected to the frame of the square tube frame, and the adjusting bolt is rotatably connected to the support plate. The sliding plate is slidably connected to the side of the frame of the square tube frame near the mounting plate. The sliding plate is in contact with the mounting plate, and the sliding plate and the adjusting bolt are threaded together.
[0008] To further explain, the bolt head of the adjusting bolt is located on the outside of the square tube frame, and a tightening groove is provided at the bolt head of the adjusting bolt. Specifically, the tightening groove of the adjusting bolt is an internal hexagonal groove, which is designed to allow only the use of a corresponding hexagonal wrench for tightening or adjustment.
[0009] To further explain, each sheet metal panel is fixedly connected to a limiting plate on the side of the panel closest to the card frame, and multiple positioning pins are fixedly provided on the side of the square tube frame that connects to the sheet metal panel. Each limiting plate has a positioning hole adapted to the positioning pin.
[0010] To further explain, a prompt icon is provided on the outer side of the square tube frame near the adjusting bolt. The prompt icon contains information indicating the direction of tightening or loosening the adjusting bolt, helping the user to correctly tighten or loosen it.
[0011] Compared with the prior art, the present invention has the following advantages:
[0012] 1. This utility model allows for quick and stable assembly by sliding the sheet metal part into the slot of the frame and using a spring to drive the locking component to automatically engage. Similarly, by adjusting the position of the locking component with the adjusting bolts, the locking on the sheet metal part can be easily released, enabling quick disassembly.
[0013] 2. This utility model, through the design of the limiting plate and positioning pin, ensures that the sheet metal parts can be accurately snapped onto the square tube frame, thereby improving the stability of the overall structure and the accuracy of the snapping.
[0014] 3. The adjusting bolt of this utility model adopts an internal hexagonal groove design to ensure that the risk of slippage or sliding is reduced during tightening or adjustment, providing higher operating accuracy and safety. The easy-to-identify operation prompt icons and tool-specific requirements enable maintenance personnel to operate more quickly. Attached Figure Description
[0015] Figure 1This is a three-dimensional structural diagram of the present invention.
[0016] Figure 2 This is an exploded view of the sheet metal parts on the square tube frame of this utility model.
[0017] Figure 3 This is a schematic diagram of the square tube frame, wedge block, adjusting bolt, and positioning pin of this utility model.
[0018] Figure 4 This is a schematic diagram showing the fit between the internal components and sheet metal parts of the square tube frame of this utility model.
[0019] The meanings of the reference numerals in the diagram are as follows: 1. Square tube frame; 100. Support leg; 2. Hinge; 3. Door panel; 4. Sheet metal panel; 41. Frame; 5. Guide rod; 51. Mounting plate; 6. Wedge block; 7. Spring; 8. Slot; 9. Support plate; 10. Adjusting bolt; 101. Tightening groove; 11. Sliding plate; 12. Limiting plate; 13. Positioning hole; 14. Positioning pin; 15. Indication icon. Detailed Implementation
[0020] 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.
[0021] A sheet metal frame that is easy to disassemble and assemble, such as Figures 1-4As shown, the machine includes a square tube frame 1, which is the main frame of the sheet metal frame. The square tube frame 1 is a square frame structure with no less than two layers of open structure. Support legs 100 are fixedly installed at the four corners of the bottom of the square tube frame 1. Each layer of the square tube frame 1 is hinged to a door panel 3 on the front side via hinges 2. The machine also includes sheet metal parts 4, clip frames 41, guide rods 5, and fasteners. Sheet metal parts 4 are clipped onto the frame openings of the square tube frame 1 except for the door panel 3. Protruding clip frames 41 are fixedly connected to both ends of the sheet metal parts 4. The clip frames 41 are double-layer frame structures. Each frame of the square tube frame 1 is a square hollow frame. Multiple guide rods 5 are fixedly connected inside the square tube frame 1. A locking component is slidably installed on the side of the frame near the sheet metal part 4 via a guide rod 5. A spring 7 is sleeved around the guide rod 5 between the locking component and the square tube frame 1. A slot 8 for the locking component is opened in the frame 41 of the sheet metal part 4. An adjusting component for adjusting the locking component is also provided in the square tube frame 1. By sliding and pushing the sheet metal part 4 into the open frame of the square tube frame 1, the locking component can be inserted into the slot 8 of the frame 41 of the sheet metal part 4 along the guide rod 5 under the action of the spring 7. This allows the sheet metal part 4 to be easily and securely assembled onto the square tube frame 1. Furthermore, by adjusting the position of the locking component, the locking component can be released from the sheet metal part 4, and the sheet metal part 4 can be quickly removed from the square tube frame 1.
[0022] like Figure 4 As shown, the locking component consists of a mounting plate 51 and a wedge block 6. The mounting plate 51 is slidably connected to the guide rod 5 inside the square tube frame 1. The wedge block 6 is fixedly connected to the mounting plate 51. The wedge block 6 is adapted to and engages with the slot 8 on the frame 41. The wedge block 6 slides through to the outside of the frame plate of the square tube frame 1. The inclined surface of the wedge block 6 faces the direction of sliding engagement of the sheet metal part 4. When the sheet metal part 4 is slidably engaged into the square tube frame 1, the frame 41 on the sheet metal part 4 will overcome the elastic force of the spring 7 and squeeze the wedge block 6. When the slot 8 in the frame 41 on the sheet metal part 4 aligns with the wedge block 6, the wedge block 6 pops outward under the action of the spring 7 and engages with the corresponding slot 8 on the frame 41, so that the sheet metal part 4 can be easily assembled onto the square tube frame 1 to form a complete frame.
[0023] like Figure 4 As shown, the adjusting component includes a support plate 9, an adjusting bolt 10, and a sliding plate 11. The support plate 9 is fixedly connected to the frame of the square tube frame 1, and the adjusting bolt 10 is rotatably connected to the support plate 9. The sliding plate 11 is slidably connected to the side of the frame of the square tube frame 1 near the mounting plate 51. The sliding plate 11 is in contact with the mounting plate 51, and the sliding plate 11 and the adjusting bolt 10 are threadedly engaged. By turning the adjusting bolt 10, the adjusting bolt 10 can drive the sliding plate 11 to move, and the sliding plate 11 can press the mounting plate 51, so that the wedge block 6 on the mounting plate 51 can quickly disengage from the locking buckle of the sheet metal part 4 frame 41, so that the sheet metal part 4 can be easily removed from the square tube frame 1.
[0024] like Figure 3 and Figure 4 As shown, the bolt head of the adjusting bolt 10 is located on the outside of the frame of the square tube frame 1. The bolt head of the adjusting bolt 10 is provided with a tightening groove 101. Specifically, the tightening groove 101 of the adjusting bolt 10 is an internal hexagonal groove. The internal hexagonal groove design only allows the use of a corresponding hexagonal wrench for tightening or adjustment, reducing the risk of slippage or sliding and ensuring the reliability of the adjustment of the adjusting bolt 10.
[0025] like Figure 2 and Figure 4 As shown, the sheet metal plate 4 is fixedly connected to the side of the plate body near the frame 41 with a limiting plate 12. The square tube frame 1 is fixedly provided with multiple positioning pins 14 on the side of the frame body that connects to the sheet metal plate 4. The limiting plate 12 is provided with positioning holes 13 that are adapted to the positioning pins 14. By aligning the positioning pins 14 with the positioning holes 13 on the positioning limiting plate 12, the sheet metal plate 4 can be accurately snapped onto the square tube frame 1, and the snapping stability of the sheet metal plate 4 on the square tube frame 1 is improved.
[0026] like Figure 3 and Figure 4 As shown, a prompt icon 15 is provided on the outer side of the square tube frame 1 near the adjusting bolt 10. The prompt icon 15 contains prompt information on the tightening direction of the adjusting bolt 10, which helps users to tighten or loosen the bolt correctly and improves the maintenance and debugging efficiency of the sheet metal frame assembly and disassembly.
[0027] When assembling this sheet metal frame, the operator aligns the clip frame 41 of the sheet metal part 4 with the opening of the square tube frame 1, and aligns it with the positioning pin 14 on the frame through the positioning hole 13 of the limiting plate 12 to ensure accurate installation. During the process of pushing in the sheet metal part 4, the edge of the clip frame 41 presses against the inclined surface of the wedge block 6 of the locking element, forcing the mounting plate 51 to retract along the guide rod 5 and compress the spring 7. When the slot 8 of the clip frame 41 moves to align with the wedge block 6, the spring 7 rebounds and pushes the wedge block 6 into the slot 8, accompanied by a "click" sound to confirm the lock, forming a stable connection. At this time, the sheet metal part 4 and the frame form an assembly structure, and the door panel 3 of the square tube frame 1 can be opened and closed freely through the hinge 2, thus completing the main structure of the sheet metal frame; during disassembly... Following the guidance of the indicator icon 15 on the outside of the frame, the operator uses a hex wrench to insert into the internal hex socket of the adjusting bolt 10, and then tightens the bolt to drive the sliding plate 11 to move. The displaced sliding plate 11 will push the mounting plate 51 to compress the spring 7, so that the wedge block 6 completely disengages from the slot 8, releasing the mechanical lock on the sheet metal part 4 frame 41. At this time, the sheet metal part 4 can be easily pulled out horizontally from the frame, and multiple parts can be disassembled independently without affecting other components. Throughout the process, the guide rod 5 ensures the linear movement accuracy of the locking parts, the spring 7 provides stable elastic feedback, and the cooperation between the limit plate 12 and the positioning pin 14 simplifies the alignment operation and enhances the shear resistance performance, ensuring that the frame maintains structural stability after frequent assembly and disassembly.
[0028] It should be understood that the above description is for illustrative purposes only and is not intended to limit the present invention. Those skilled in the art will understand that variations of the present invention will be included within the scope of the claims herein.
Claims
1. A sheet metal frame convenient to disassemble and assemble, comprising a square tube frame (1), the square tube frame (1) is an open square frame structure of no less than two layers, the bottom corners of the square tube frame (1) are fixedly provided with supporting legs (100), and the front side of each layer of the frame of the square tube frame (1) is hingedly provided with a door plate (3). characterized in that It also comprises a sheet metal plate (4), a clamping frame (41), a guide rod (5) and a lock piece, the square tube frame (1) is provided with the sheet metal plate (4) on the frame opening surface of the side of the door plate (3), the both ends of the sheet metal plate (4) are fixedly connected with the protruding clamping frame (41), the clamping frame (41) is a double-layer frame structure, each frame of the square tube frame (1) is a square hollow frame body, a plurality of guide rods (5) are fixedly connected inside the square tube frame (1), and the frame body of the square tube frame (1) is slidably provided with the lock piece on the side close to the clamping of the sheet metal plate (4) through the guide rod (5); the guide rod (5) between the lock piece and the square tube frame (1) is peripherally provided with a spring (7), the clamping frame (41) of the sheet metal plate (4) is provided with a clamping groove (8) matched with the lock piece, and the square tube frame (1) is further provided with an adjusting piece for adjusting the lock piece.
2. The sheet metal frame of claim 1, wherein, The lock piece is composed of a mounting plate (51) and a wedge-shaped block (6), the mounting plate (51) is slidably connected to the guide rod (5) in the frame body of the square tube frame (1), the wedge-shaped block (6) is fixedly connected to the mounting plate (51), the wedge-shaped block (6) is matched with and buckled to the clamping groove (8) on the clamping frame (41), the wedge-shaped block (6) is slidably penetrated to the outside of the frame plate of the square tube frame (1), and the inclined surface of the wedge-shaped block (6) faces the sliding buckling direction of the sheet metal plate (4).
3. The sheet metal frame of claim 2, wherein, The adjusting piece comprises a supporting plate (9), an adjusting bolt (10) and a sliding plate (11), the supporting plate (9) is fixedly connected in the frame body of the square tube frame (1), the adjusting bolt (10) is rotatably connected to the supporting plate (9), the sliding plate (11) is slidably connected to the side close to the mounting plate (51) in the frame body of the square tube frame (1), the sliding plate (11) is in contact with the mounting plate (51), and the sliding plate (11) is threadedly matched with the adjusting bolt (10).
4. The sheet metal frame of claim 3, wherein, The head of the adjusting bolt (10) is located outside the frame body of the square tube frame (1), and a screwing groove (101) is formed in the head of the adjusting bolt (10).
5. The sheet metal frame of claim 4, wherein, The plate body of the sheet metal plate (4) is fixedly connected with a limiting plate (12) on the side close to the clamping frame (41), a plurality of positioning pins (14) are fixedly arranged on the side surface of the frame body of the square tube frame (1) abutting the sheet metal plate (4), and a positioning hole (13) matched with the positioning pin (14) is formed in the limiting plate (12).
6. The sheet metal frame of claim 5, wherein, A prompt icon (15) is arranged on the outside of the frame body of the square tube frame (1) close to the adjusting bolt (10), and the prompt icon (15) comprises prompt information of the tightening direction of the adjusting bolt (10).