Air duct structure and fan
The snap-fit air duct design solves the problems of low production efficiency and uneven connection caused by traditional fan screw fixing methods, and achieves efficient installation and stability of fan components.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-04-14
AI Technical Summary
The traditional screw-fixing method for fans results in low production efficiency and uneven connection tightness, affecting the overall performance and stability of the fan.
The air duct design adopts a snap-fit structure, with the front and rear covers snapped onto the front and rear ends of the fan assembly respectively. Combined with the annular retaining ring, the fan assembly is kept in a stable position and installed inside the middle shell.
This improves the production efficiency and installation stability of the fan, and ensures the reliable positioning of the fan assembly within the mounting cavity.
Smart Images

Figure CN224120392U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fans, and specifically relates to an air duct structure and a fan. Background Technology
[0002] Fans are widely used as a common air circulation device in various devices and living scenarios. Whether for cooling electronic products such as computers, or for ventilation in homes and offices, fans play an important role.
[0003] Traditional fan structures typically include a rear housing, a fan assembly, and a front housing. During assembly, the rear and front housings are often connected using screws. While this connection method achieves a relatively stable assembly, it has some significant drawbacks.
[0004] In terms of production efficiency, the screw-fixing method increases the number of steps and time on the production line. Workers need to tighten each screw, which significantly reduces production efficiency and increases production costs in large-scale production. Moreover, inconsistent screw tightening force can lead to uneven tightness between the rear and front housings, affecting the overall performance and stability of the fan. Utility Model Content
[0005] In order to solve the above problems, the purpose of this utility model is to provide an air duct structure that is easy to install and can effectively improve production efficiency.
[0006] In order to solve the above problems, another objective of this utility model is to provide a fan that is easy to install and can effectively improve production efficiency.
[0007] To achieve the above objectives, the technical solution of this utility model is as follows.
[0008] This application provides a duct structure, characterized in that it includes:
[0009] Fan components used to accelerate airflow;
[0010] The middle shell has a mounting cavity inside, with both ends of the mounting cavity penetrating both ends of the middle shell, and the fan assembly is disposed inside the mounting cavity;
[0011] The front cover is snapped onto the front end of the mounting cavity and abuts against the front end of the fan assembly, and the front cover is provided with an air outlet that communicates with the mounting cavity;
[0012] The rear cover is snapped onto the rear end of the mounting cavity and abuts against the rear end of the fan assembly, and the rear cover is provided with an air inlet that communicates with the mounting cavity.
[0013] This application also provides a fan, including a handle and the aforementioned air duct structure, the air duct structure being disposed on the handle. Building upon the advantages of the aforementioned air duct structure, this fan, by providing a handle, allows for handheld use, making it more convenient to operate.
[0014] In this utility model, the beneficial effect is that after the fan assembly is installed in the mounting cavity of the middle shell, the front cover and the rear cover are respectively snapped into the front and rear ends of the mounting cavity and abut against the front and rear ends of the fan assembly to complete the installation; that is, the setting of this air duct structure not only makes the installation more convenient and can more effectively improve production efficiency, but also ensures the stability of the fan assembly in the mounting cavity after installation, making the air duct structure more reliable. Attached Figure Description
[0015] Figure 1 This is an exploded view of the air duct structure.
[0016] Figure 2 This is a structural diagram of the air duct structure.
[0017] Figure 3 This is a schematic diagram of the fan structure.
[0018] Figure 4 This is a cross-sectional view of the fan.
[0019] 1. Fan assembly;
[0020] 2. Middle shell; 21. Mounting cavity; 22. Hinge joint; 221. Cable routing channel;
[0021] 3. Front cover; 31. Air vent; 32. Front retaining ring; 33. Transparent area;
[0022] 4. Rear cover; 41. Air inlet; 42. Rear retaining ring;
[0023] 5. Display screen;
[0024] 6. Handle; 61. Control components; 62. Battery; 63. Hinge slot; 631. Wiring hole. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0026] See Figure 1-2 This embodiment provides an air duct structure, including:
[0027] Fan assembly 1 for accelerating airflow;
[0028] The middle shell 2 has a mounting cavity 21 inside it. The two ends of the mounting cavity 21 pass through the two ends of the middle shell 2 respectively. The fan assembly 1 is installed in the mounting cavity 21.
[0029] The front cover 3 extends into the front end of the mounting cavity 21 and is snapped onto the front end of the mounting cavity 21. The rear end of the front cover 3 abuts against the front end of the fan assembly 1. The front end of the front cover 3 is also provided with an air outlet 31 that communicates with the mounting cavity 21.
[0030] The rear cover 4 extends into the rear end of the mounting cavity 21 and is snapped onto the rear end of the mounting cavity 21. The front end of the rear cover 4 abuts against the rear end of the fan assembly 1. The rear end of the rear cover 4 is also provided with an air inlet 41 that communicates with the mounting cavity 21.
[0031] Specifically, the fan assembly is an existing fan structure consisting of a motor and fan blades. When the fan assembly 1 is working, the motor drives the fan blades to rotate, which accelerates the air circulation in the mounting cavity 21, so as to quickly draw in external air from the air inlet 41 and discharge it from the air outlet 31 after passing through the mounting cavity 21.
[0032] In this embodiment, a front abutment ring 32 is provided at the rear end of the front cover 3, and the front abutment ring 32 extends into the mounting cavity 21 to abut against the front end of the fan assembly 1;
[0033] The rear cover 4 is provided with a rear retaining ring 42, which extends into the mounting cavity 21 to abut against the rear end of the fan assembly 1;
[0034] The annular front abutment ring 32 and the annular rear abutment ring 42 abut against the front and rear ends of the fan assembly 1 respectively, so as to maintain the position of the fan assembly 1 more stably without affecting the airflow guidance of the fan assembly 1.
[0035] See Figure 4 In this embodiment, the air duct structure also includes a display screen 5, which is located at the front end of the mounting cavity 21 and fixed to the fan assembly 1, the middle shell 2, or the front cover 3. The display screen can display data such as the on / off status, fan speed, and power information of the fan assembly 1 at the air outlet 31.
[0036] In this embodiment, a transparent area 33 is provided on the front cover 3 corresponding to the display screen 5, and the display content of the display screen 5 can be displayed through this transparent area. Specifically, the transparent area 33 can be made of transparent glass or transparent plastic.
[0037] In this embodiment, the air outlet 31 is arranged around the transparent area 33.
[0038] See Figure 1-4In this embodiment, a fan is also provided, including an air duct structure and a handle 6, wherein the air duct structure is disposed on the handle 6.
[0039] In this embodiment, a hinge portion 22 is fixedly provided on the middle shell 2, and a hinge groove 63 is provided on the upper end of the handle 6. The hinge portion 22 is hingedly disposed in the hinge groove 63. The angle of the hinge portion 22 located in the hinge groove 63 can be rotated as needed to adjust the angle of the air duct structure on the handle 6. Specifically, the air duct structure is arranged horizontally on the handle 6, and the hinge portion 22 is perpendicular to the axial direction of the mounting cavity 21.
[0040] In this embodiment, the handle 6 houses a control component 61 and a battery 62. The battery 62 and the fan assembly 1 are both electrically connected to the control component 61. The battery 62 supplies power to the control component 61, the display screen 5, and the fan assembly 1. The control component 61 controls the display screen 5 and the fan assembly 1. This control component 61 is a conventional control motherboard with a standard circuit and control program. Specifically, buttons connected to the control component 61 can be provided on the handle 6 to control the display screen 5 and the fan assembly 1.
[0041] In this embodiment, a wiring channel 221 extending into the mounting cavity 21 is provided in the hinge portion 22, and a wiring hole 631 extending into the handle 6 is provided at the hinge groove 63, with the wiring hole 631 connected to the wiring channel 221. The control component 61 is electrically connected to the fan assembly 1 after passing through the wiring hole 631 and the wiring channel 221.
[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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. An air duct structure characterized by, The application relates to a fan structure, which comprises the following parts: a fan assembly for accelerating air flow; a middle shell, which is internally provided with an installation cavity, the two ends of the installation cavity penetrating through the two ends of the middle shell, and the fan assembly being arranged in the installation cavity; a front cover, which is clamped and arranged at the front end of the installation cavity and abuts against the front end of the fan assembly, and is further provided with an air outlet communicating with the installation cavity; a rear cover, which is clamped and arranged at the rear end of the installation cavity and abuts against the rear end of the fan assembly, and is further provided with an air inlet communicating with the installation cavity.
2. The air duct structure according to claim 1, wherein The front cover is provided with a front abutting ring, which extends into the installation cavity to abut against the front end of the fan assembly. The rear cover is provided with a rear abutting ring, which extends into the installation cavity to abut against the rear end of the fan assembly.
3. The air duct structure according to claim 1, wherein The fan structure further comprises a display screen, which is arranged at the front end of the installation cavity and fixed to the fan assembly, the middle shell or the front cover.
4. A duct structure according to claim 3, wherein The front cover is provided with a transparent area corresponding to the display screen.
5. A duct structure according to claim 4, wherein The air outlet is arranged around the periphery of the transparent area.
6. A fan, which comprises a handle and the fan structure according to any one of claims 1-5, and the fan structure is arranged on the handle.
7. A fan as claimed in claim 6, wherein A hinge part is fixedly arranged on the middle shell, and a hinge groove is arranged at the upper end of the handle, and the hinge part is hingedly arranged in the hinge groove.
8. A fan as claimed in claim 7, wherein A control assembly and a battery are arranged in the handle, and the battery and the fan assembly are electrically connected to the control assembly.
9. A fan as claimed in claim 8, wherein A wire channel penetrating into the installation cavity is arranged in the hinge part, and a wire hole penetrating into the handle is arranged at the hinge groove, and the wire hole communicates with the wire channel.