Plastic housing for household appliances

Abstract

The utility model relates to the technical field of plastic shell, disclose a kind of plastic shell for household appliance, including protective shell, the connecting inner container is arranged in protective shell side wall, the transparent plate is fixedly connected in connecting inner container side wall, the control panel is fixedly connected in connecting inner container side wall, and the dismounting assembly is arranged in connecting inner container side wall;The dismounting assembly includes hollow column, and the hollow column side wall is fixedly connected in connecting inner container side wall, and the fixed column is fixedly connected in the hollow column inside, the sleeve ring is slidably connected in the fixed column outer wall, and the sleeve ring side wall is provided with spring.In the utility model, by pulling protective shell, protective shell moves to hollow column inside with the driving of clamping block, clamping block moves with the driving of sleeve ring, sleeve ring shrinks spring, reaches the effect of modular connection, solves the problem that too much time is wasted when being disassembled or maintaining inside in prior art using nut to connect, improves the convenience of plastic shell for household appliance.

Description

Technical Field

[0001] This utility model relates to the field of plastic shell technology, and in particular to a plastic shell for household appliances. Background Technology

[0002] In today's home appliance industry, plastic casings are widely used. As a key component for protecting internal electrical components and meeting product design requirements, they are constantly evolving towards higher performance, greater convenience, and more multifunctionality. As consumers increasingly demand a better user experience for home appliances, they not only focus on the functional characteristics of the appliances themselves but also place greater emphasis on the design, installation, and ease of maintenance of the casing.

[0003] Under the existing technological system, a common plastic casing for household appliances typically encompasses several key structures. First, there's the basic protective shell, which acts as an overall protective barrier. It's generally injection-molded from a plastic material with a certain strength and toughness to resist external physical impacts and daily environmental corrosion, protecting the internal electrical components. The connecting parts often rely on a combination of nuts and bolts. By setting corresponding threaded holes at the joints of the casing, the fastening action of nuts and bolts secures the various components, ensuring the stability and sealing of the casing structure. In addition, some casings are equipped with simple heat dissipation structures, such as small vents or heat sinks, designed to promote the dissipation of internal heat and prevent performance degradation or malfunction due to overheating. Simultaneously, it includes slots or mounting brackets for components such as control panels and displays to enable the appliance's functional operation and information display. These structures collectively constitute the basic architecture of traditional plastic casings for household appliances.

[0004] However, traditional nut-and-bolt connections reveal significant drawbacks when disassembling or maintaining household appliances. Because the connection between nuts and bolts is tight and often numerous, operators must unscrew each nut individually during disassembly—a tedious and time-consuming process that drastically reduces work efficiency. This is especially problematic when rapid troubleshooting, repair, or parts replacement is required; the wasted time negatively impacts production schedules, repair costs, and user experience. Therefore, this paper proposes a plastic casing for household appliances to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a plastic housing for household appliances, which aims to improve the problem of excessive time wastage when disassembling or maintaining the internal parts due to the use of nuts for connection in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A plastic casing for household appliances includes a protective shell, a connecting inner liner provided on the side wall of the protective shell, a transparent plate fixedly connected to the side wall of the connecting inner liner, a control plate fixedly connected to the side wall of the connecting inner liner, and a disassembly assembly provided on the side wall of the connecting inner liner.

[0008] The disassembly assembly includes a hollow column, the sidewall of which is fixedly connected to the sidewall of the connecting inner liner. A fixing column is fixedly connected inside the hollow column. A collar is slidably connected to the outer wall of the fixing column. A spring is provided on the sidewall of the collar. One end of the spring is fixedly connected to the sidewall of the collar, and the other end of the spring is fixedly connected to the sidewall of the connecting inner liner. A second connecting rod is rotatably connected to the sidewall of the collar. A locking block is slidably connected to the sidewall of the second connecting rod. The outer wall of the locking block is slidably connected to the inner wall of the hollow column. A heat dissipation assembly is provided on the sidewall of the connecting inner liner.

[0009] As a further description of the above technical solution:

[0010] The heat dissipation component includes a fan, the outer wall of which is fixedly connected to the inside of the connecting inner liner, and the side wall of which is disposed on the side wall of the protective shell.

[0011] As a further description of the above technical solution:

[0012] A support ring is fixedly connected to the side wall of the fan, and a connecting frame is fixedly connected to the outer wall of the support ring;

[0013] As a further description of the above technical solution:

[0014] A motor is fixedly connected to the side wall of the connecting frame, and a first rotating column is fixedly connected to the output end of the motor;

[0015] As a further description of the above technical solution:

[0016] One end of the first rotating column is rotatably connected to the outer wall of the support ring, and a second clamping plate is fixedly connected to the outer wall of the first rotating column;

[0017] As a further description of the above technical solution:

[0018] The second clamping plate has a first connecting rod fixedly connected to its side wall, and the other end of the first connecting rod has a first clamping plate fixedly connected to it.

[0019] As a further description of the above technical solution:

[0020] A second rotating column is fixedly connected inside the first clamping plate, and a fan blade is fixedly connected to the outer wall of the second rotating column;

[0021] As a further description of the above technical solution:

[0022] The fan blade sidewall is rotatably connected to the inner wall of the support ring, and the fan blade sidewall is rotatably connected to a connecting ring.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, by pulling the protective shell, the protective shell moves the locking block into the hollow column, the locking block moves the collar, and the collar retracts the spring, achieving the effect of modular connection. This solves the problem of excessive time wasted when disassembling or maintaining the internal parts due to the use of nuts for connection in the prior art, and improves the convenience of plastic shells for household appliances.

[0025] 2. In this utility model, the first rotating column is driven to rotate by the output end of the motor. Then, the rotation of the first rotating column drives the second clamping plate on the outer wall to rotate. The rotation of the second clamping plate drives the first connecting rod on the side wall to rotate. The rotation of the first connecting rod drives the first clamping plate to rotate. Then, the rotation of the first clamping plate drives the second rotating column on the side wall, and drives the fan blade to rotate. This achieves the effect of flow rate regulation, solves the problem that the inability to adjust the flow rate affects the heat dissipation effect when dissipating heat inside the protective shell, and improves the practicality of plastic shells for household appliances. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a plastic shell for household appliances proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the explosion structure of a protective shell for a plastic outer casing of a household appliance proposed in this utility model;

[0028] Figure 3 This is a schematic cross-sectional view of a protective shell for a plastic outer casing of a household appliance, as proposed in this utility model.

[0029] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0030] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0031] Legend:

[0032] 1. Protective shell; 2. Transparent plate; 3. Connecting inner liner; 4. Control board; 5. Motor; 6. Connecting frame; 7. First rotating column; 8. First connecting rod; 9. First clamping plate; 10. Second rotating column; 11. Fan blade; 12. Connecting ring; 13. Fan; 14. Support ring; 15. Hollow column; 16. Fixed column; 17. Collar; 18. Spring; 19. Second clamping plate; 20. Locking block; 21. Second connecting rod. Detailed Implementation

[0033] 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.

[0034] Reference Figure 1 , Figure 3 and Figure 5 The present invention provides an embodiment of a plastic shell for household appliances, including a protective shell 1. The protective shell 1 has a connecting inner liner 3 on its side wall. The connecting inner liner 3 is made of polycarbonate, which has excellent heat resistance and dimensional stability, and can maintain its shape and performance when the appliance generates heat during operation. A transparent plate 2 is fixedly connected to the side wall of the connecting inner liner 3. The transparent plate 2 is made of acrylic, which has high transparency, good weather resistance and mechanical strength. A control plate 4 is fixedly connected to the side wall of the connecting inner liner 3. A disassembly assembly is provided on the side wall of the connecting inner liner 3.

[0035] The disassembly assembly includes a hollow column 15 made of nylon. Nylon has good wear resistance and self-lubricating properties, facilitating relative movement between components during disassembly and reducing frictional wear. The sidewall of the hollow column 15 is fixedly connected to the sidewall of the connecting inner liner 3. A fixing column 16 is fixedly connected inside the hollow column 15, and a collar 17 is slidably connected to the outer wall of the fixing column 16. The collar 17 is made of polyoxymethylene (POM), which has a low coefficient of friction, high rigidity, and good elastic recovery properties. In its sliding engagement with the fixing column 16, it can move flexibly. A spring 18 is provided on the sidewall of the collar 17, with one end of the spring 18 fixedly connected to the sidewall of the collar 17. The other end is fixedly connected to the side wall of the inner liner 3. The side wall of the collar 17 is rotatably connected to the second connecting rod 21. The second connecting rod 21 is made of aluminum alloy. Aluminum alloy is lightweight and has certain strength and toughness. While ensuring structural strength, it reduces the weight of the entire disassembly assembly, making it easy to operate and move. The side wall of the second connecting rod 21 is slidably connected to the locking block 20. The locking block 20 is made of high-strength engineering plastic. While having a certain strength to achieve the locking function, the self-lubricating property of the engineering plastic helps it slide smoothly on the side wall of the second connecting rod 21. The outer wall of the locking block 20 is slidably connected to the inner wall of the hollow column 15. The side wall of the inner liner 3 is provided with a heat dissipation component.

[0036] Specifically, in the disassembly process of the plastic shell of the household appliance, the first step is to pull the connecting inner liner 3. This action causes the connecting inner liner 3 to shift, thereby causing the hollow column 15 connected to it to move synchronously. A locking block 20 is provided on the outer wall of the hollow column 15. As the hollow column 15 moves, the locking block 20 also moves. The movement of the locking block 20 acts on the second connecting rod 21 on the side wall, causing it to rotate inside the hollow column 15. At the same time, the movement of the second connecting rod 21 also pulls the collar 17 on the side wall. The collar 17 slides along the outer wall of the fixed column 16. During this process, the side wall of the collar 17 is connected to a spring 18. The sliding of the collar 17 causes the spring 18 to contract under force, achieving a modular disassembly effect for the plastic shell of the household appliance. This not only improves the convenience of disassembly but also greatly facilitates subsequent maintenance and replacement of parts, effectively improving the maintainability and service life of the entire household appliance.

[0037] Reference Figure 1 , Figure 2 and Figure 4 The heat dissipation assembly includes a fan 13. The outer wall of the fan 13 is fixedly connected to the inside of the connecting inner liner 3. The side wall of the fan 13 is set on the side wall of the protective shell 1. A support ring 14 is fixedly connected to the side wall of the fan 13. The support ring 14 is usually made of aluminum alloy. The high strength and excellent thermal conductivity of aluminum alloy not only provide a stable support structure for the fan 13, but also help to quickly dissipate the heat generated during the operation of the fan 13. A connecting frame 6 is fixedly connected to the outer wall of the support ring 14. A motor 5 is fixedly connected to the side wall of the connecting frame 6. A first rotating column 7 is fixedly connected to the output end of the motor 5. The first rotating column 7 is made of medium carbon steel and has undergone heat treatment processes such as quenching to improve its hardness and wear resistance. One end of the first rotating column 7 is rotatably connected to the outer wall of the support ring 14. A second clamping plate 19 is fixedly connected to the outer wall of the first rotating column 7. The clamping plate 19 is made of stainless steel. The corrosion resistance and good processing performance of stainless steel ensure that it can firmly clamp and fix the relevant components. The first connecting rod 8 is fixedly connected to the side wall of the second clamping plate 19. The first connecting rod 8 is made of high-strength aluminum alloy. While ensuring sufficient strength, it further reduces the weight of the components. The other end of the first connecting rod 8 is fixedly connected to the first clamping plate 9. The second rotating column 10 is fixedly connected inside the first clamping plate 9. The fan blade 11 is fixedly connected to the outer wall of the second rotating column 10. The fan blade 11 is made of lightweight composite material, which has high strength and rigidity, and is also lightweight. It can rotate quickly under the drive of the motor 5 to generate a large airflow and improve heat dissipation efficiency. The side wall of the fan blade 11 is rotatably connected to the inner wall of the support ring 14. The side wall of the fan blade 11 is rotatably connected to the connecting ring 12.

[0038] Specifically, the cooling function is then achieved using fan 13. When the airflow rate of fan 13 is adjusted, the output of motor 5 starts to operate, driving the connected first rotating column 7 to rotate. During the rotation of the first rotating column 7, the second clamping plate 19 on its outer wall rotates synchronously. At this time, the collar 17 is also rotating. The rotation of the collar 17 drives the first connecting rod 8 on the side wall to rotate as well. The rotation of the first connecting rod 8 is then transmitted to the first clamping plate 9 on the side wall, causing the first clamping plate 9 to start rotating. Next, the rotation of the first clamping plate 9 drives the second rotating column 10 on the side wall to rotate. While the second rotating column 10 is rotating, it drives the fan blades 11 on its outer wall to rotate as well. When the fan blades 11 rotate, they rotate continuously in the internal space of the connecting ring 12, achieving the effect of regulating the airflow rate. Thus, the airflow rate blown out by fan 13 can be flexibly adjusted according to the actual cooling needs to ensure that the electrical equipment operates stably in a suitable temperature environment, improve the operating efficiency and stability of the equipment, extend its service life, and reduce the risk of failure due to overheating.

[0039] Working principle: When disassembling the plastic shell of a household appliance, first pull the connecting inner liner 3. The connecting inner liner 3 is forced to move the hollow column 15. The movement of the hollow column 15 moves the outer wall latch 20. Then the movement of the latch 20 moves the second connecting rod 21 on the side wall, causing it to rotate inside the hollow column 15. Then the movement of the second connecting rod 21 moves the side wall collar 17 to slide. Then the collar 17 slides on the outer wall of the fixed column 16. Next, the movement of the collar 17 moves the side wall spring 18 to retract, achieving the effect of modular design.

[0040] Then, the fan 13 is used for heat dissipation. When the airflow rate of the fan 13 is adjusted, the first rotating column 7 is driven to rotate by the output end of the motor 5. The rotation of the first rotating column 7 drives the second clamping plate 19 on the outer wall to rotate as well. When the collar 17 rotates, it drives the first connecting rod 8 on the side wall to rotate. At the same time, the rotation of the first connecting rod 8 drives the first clamping plate 9 on the side wall to rotate. Then, the rotation of the first clamping plate 9 drives the second rotating column 10 on the side wall to rotate. At the same time, the rotation of the second rotating column 10 drives the fan blade 11 on the outer wall to rotate. When the fan blade 11 rotates, it rotates inside the connecting ring 12, thus achieving the effect of airflow rate adjustment.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plastic housing for a domestic appliance comprising a protective shell (1), characterized in that: The protective shell (1) has a connecting inner liner (3) on its side wall. A transparent plate (2) is fixedly connected to the side wall of the connecting inner liner (3). A control plate (4) is fixedly connected to the side wall of the connecting inner liner (3). A disassembly assembly is provided on the side wall of the connecting inner liner (3). The disassembly assembly includes a hollow column (15), the side wall of which is fixedly connected to the side wall of the connecting inner liner (3), a fixing column (16) is fixedly connected inside the hollow column (15), a collar (17) is slidably connected to the outer wall of the fixing column (16), a spring (18) is provided on the side wall of the collar (17), one end of the spring (18) is fixedly connected to the side wall of the collar (17), and the other end of the spring (18) is fixedly connected to the side wall of the connecting inner liner (3). A second connecting rod (21) is rotatably connected to the side wall of the collar (17), a locking block (20) is slidably connected to the side wall of the second connecting rod (21), and the outer wall of the locking block (20) is slidably connected to the inner wall of the hollow column (15). A heat dissipation assembly is provided on the side wall of the connecting inner liner (3).

2. A plastic housing for a domestic appliance according to claim 1, characterized in that: The heat dissipation assembly includes a fan (13), the outer wall of the fan (13) is fixedly connected to the inside of the connecting inner liner (3), and the side wall of the fan (13) is set on the side wall of the protective shell (1).

3. A plastic housing for a domestic appliance according to claim 2, characterized in that: A support ring (14) is fixedly connected to the side wall of the fan (13), and a connecting frame (6) is fixedly connected to the outer wall of the support ring (14).

4. A plastic housing for a domestic appliance according to claim 3, characterized in that: A motor (5) is fixedly connected to the side wall of the connecting frame (6), and a first rotating column (7) is fixedly connected to the output end of the motor (5).

5. A plastic housing for a domestic appliance according to claim 4, characterized in that: One end of the first rotating column (7) is rotatably connected to the outer wall of the support ring (14), and the outer wall of the first rotating column (7) is fixedly connected to the second clamping plate (19).

6. A plastic housing for household appliances according to claim 5, characterized in that: The second clamping plate (19) is fixedly connected to the side wall of the first connecting rod (8), and the other end of the first connecting rod (8) is fixedly connected to the first clamping plate (9).

7. A plastic housing for household appliances according to claim 6, characterized in that: The first clamping plate (9) is fixedly connected to the second rotating column (10), and the outer wall of the second rotating column (10) is fixedly connected to the fan blade (11).

8. A plastic housing for household appliances according to claim 7, characterized in that: The side wall of the fan blade (11) is rotatably connected to the inner wall of the support ring (14), and the side wall of the fan blade (11) is rotatably connected to the connecting ring (12).

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