Air duct structure and handheld fan

Abstract

The utility model belongs to the field of fans, and particularly relates to an air duct structure and a handheld fan. A first mounting cavity penetrating through the front end of the rear shell is formed in the rear shell, and an air inlet communicating with the first mounting cavity is formed in the rear side of the rear shell; a second mounting cavity penetrating through the rear end of the front shell is formed in the front shell, an air outlet communicated with the second mounting cavity is formed in the front side of the front shell, the rear end of the front shell is connected with the front end of the rear shell in a clamped mode, the front end of the fan assembly extends into the second mounting cavity, and the rear end of the fan assembly extends into the first mounting cavity. According to the utility model, the two ends of the fan assembly are respectively installed in the first installation cavity of the rear shell and the second installation cavity of the front shell, and then the rear end of the front shell and the front end of the rear shell are clamped, so that the installation is completed; namely, due to the arrangement of the air duct structure, the installation is more convenient, and the production efficiency can be more effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of fans, and specifically relates to an air duct structure and a handheld 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] To address the aforementioned problems, another objective of this invention is to provide a handheld 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] A duct structure, characterized in that it comprises:

[0009] Fan components used to accelerate airflow;

[0010] The rear shell has a first mounting cavity extending through its front end, and an air inlet communicating with the first mounting cavity is provided on the rear side of the rear shell.

[0011] The front shell has a second mounting cavity extending through its rear end, and an air outlet communicating with the second mounting cavity is provided on the front side of the front shell. The rear end of the front shell and the front end of the rear shell are snapped together. The first mounting cavity and the second mounting cavity are connected. The front end of the fan assembly extends into the second mounting cavity, and the rear end of the fan assembly extends into the first mounting cavity.

[0012] A handheld fan includes the aforementioned air duct structure, and a handle is fixed to the lower end of the front shell and / or rear shell. In addition to the advantages of the air duct structure, this handheld fan further enhances user convenience by providing a handle for easier handheld use.

[0013] The beneficial effect of this utility model is that by installing the two ends of the fan assembly into the first mounting cavity of the rear shell and the second mounting cavity of the front shell respectively, and then snapping the rear end of the front shell and the front end of the rear shell together, the installation is completed; that is, the setting of this air duct structure makes installation more convenient and can more effectively improve production efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a handheld fan.

[0015] Figure 2 This is a cross-sectional view of a handheld fan.

[0016] Figure 3 It's an exploded view of a handheld fan.

[0017] Figure 4 This is a schematic diagram of the structure of a handheld fan with a hidden back cover.

[0018] Figure 5 This is a schematic diagram of the structure of a handheld fan with a hidden front cover.

[0019] Icon labels:

[0020] 1. Fan assembly; 11. First limiting slot; 12. First limiting strip; 13. Second limiting strip;

[0021] 2. Rear shell; 21. First mounting cavity; 22. Air inlet; 23. Rear support ring; 24. First snap-fit ​​part; 241. Snap-fit ​​interface; 25. Second limiting groove; 26. First handle part;

[0022] 3. Front housing; 31. Second mounting cavity; 32. Air outlet; 33. Front retaining ring; 34. Second snap-fit ​​part; 35. Third limiting groove; 36. Second handle part;

[0023] 4. Display screen;

[0024] 5. Decorative cover; 51. Transparent area; 52. Air vent;

[0025] 6. Battery;

[0026] 7. Control components. Detailed Implementation

[0027] 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.

[0028] See Figure 1-5 This embodiment provides an air duct structure, including:

[0029] Fan assembly 1 for accelerating airflow;

[0030] The rear shell 2 has a first mounting cavity 21 extending through its front end, and an air inlet 22 connected to the first mounting cavity 21 is provided on the rear side of the rear shell 2.

[0031] The front shell 3 has a second mounting cavity 31 extending through its rear end, and an air outlet 32 ​​connected to the second mounting cavity 31 is provided on the front side of the front shell 3. The rear end of the front shell 3 and the front end of the rear shell 2 are snapped together. The first mounting cavity 21 and the second mounting cavity 31 are connected. The front end of the fan assembly 1 extends into the second mounting cavity 31, and the rear end of the fan assembly 1 extends into the first mounting cavity 21.

[0032] Specifically, the fan assembly 1 is a fan structure composed of a motor, fan blades, and a housing. Its specific structure is a conventional design and will not be described in detail.

[0033] In this embodiment, a rear abutment ring 23 is arranged around the first mounting cavity 21, and a front abutment ring 33 is arranged around the second mounting cavity 31. The two ends of the fan assembly 1 abut against the rear abutment ring 23 and the front abutment ring 33, respectively. By cooperating with the rear abutment ring 23 and the front abutment ring 33 to abut against the two ends of the fan assembly 1, the position of the fan assembly can be made more stable.

[0034] In this embodiment, a first snap-fit ​​part 24 is fixed in the first mounting cavity 21, and a snap-fit ​​interface 241 is provided on the first snap-fit ​​part 24. A second snap-fit ​​part 34 is provided in the second mounting cavity 31. The first snap-fit ​​part 24 extends into the second mounting cavity 31, and the second snap-fit ​​part 34 snaps into the snap-fit ​​interface 241.

[0035] In this embodiment, a first limiting groove 11 is provided on the periphery of the fan assembly 1, and a first snap-fit ​​part 24 extends into the first limiting groove 11 so that the first snap-fit ​​part 24 can not only snap into the second snap-fit ​​part 34, but also limit the position of the fan assembly 1.

[0036] In this embodiment, a second limiting groove 25 parallel to its axis is provided on the periphery of the first mounting cavity 21, and a first limiting strip 12 parallel to its axis is provided on the periphery of the fan assembly 1, extending into the second limiting groove 25. When the fan assembly 1 is installed into the first mounting cavity 21, the first limiting strip 12 can extend into the second limiting groove 25 to align the installation position. Furthermore, after installation, the stability of the fan assembly 1's position within the first mounting cavity 21 can be ensured.

[0037] In this embodiment, a third limiting groove 35 parallel to its axis is provided on the periphery of the second mounting cavity 31, and a second limiting strip 13 parallel to its axis is provided on the periphery of the fan assembly 1, extending into the third limiting groove 35. When the fan assembly 1 is installed into the second mounting cavity 31, the second limiting strip 13 can extend into the third limiting groove 35 to align the installation position. Furthermore, after installation, the stability of the fan assembly 1's position within the second mounting cavity 31 can be ensured.

[0038] In this embodiment, the air duct structure also includes a display screen 4, which is located at the air outlet 32 ​​and fixed to the fan assembly 1 or the front cover 3. The display screen 4 can be used to display information such as the on / off status and airflow level of the fan assembly 1 at the air outlet.

[0039] In this embodiment, the air duct structure also includes a decorative cover 5, which is snapped onto the air outlet 32 ​​of the front shell 3. The decorative cover 5 includes a transparent area 51 located at its center and an air outlet 52 surrounding the transparent area 51. The transparent area 51 corresponds to the display screen 4, and the display screen 4 can be displayed through the transparent area 51. The air outlet 52 is connected to the air outlet 32.

[0040] See Figure 1-5 This embodiment also provides a handheld fan, including an air duct structure, with a handle fixed to the lower end of the front shell 3 and / or the rear shell 2.

[0041] In this embodiment, a first handle portion 26 extends from the lower end of the rear shell 2, and a second handle portion 36 extends from the lower end of the front shell 3. The handle is formed by the engagement of the first handle portion 26 and the second handle portion 36.

[0042] Specifically, the handle also contains a battery 6, a control component 7, and other structures. The control component 7 controls the display screen 4 and the fan assembly 1. The control component 7 is an existing control motherboard with conventional circuitry and control programs. Specifically, buttons connected to the control component 7 can be set on the handle to control the display screen 4 and the fan assembly 1.

[0043] 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 air duct structure comprises: a fan assembly for accelerating air flow; a rear shell provided with a first mounting cavity penetrating through a front end thereof, and an air inlet on a rear side of the rear shell communicating with the first mounting cavity; a front shell provided with a second mounting cavity penetrating through a rear end thereof, and an air outlet on a front side of the front shell communicating with the second mounting cavity, the rear end of the front shell and the front end of the rear shell being clamped, the first mounting cavity and the second mounting cavity being communicated, the fan assembly extending into the second mounting cavity at a front end thereof and extending into the first mounting cavity at a rear end thereof.

2. The air duct structure according to claim 1, wherein A rear abutting ring is arranged around a periphery of the first mounting cavity, and a front abutting ring is arranged around a periphery of the second mounting cavity, the two ends of the fan assembly abutting with the rear abutting ring and the front abutting ring respectively.

3. The air duct structure according to claim 1, wherein A first clamping part is fixed in the first mounting cavity, the first clamping part being provided with a clamping opening, and a second clamping part is arranged in the second mounting cavity, the first clamping part extending into the second mounting cavity, and the second clamping part clamping into the clamping opening.

4. A duct structure according to claim 3, wherein A first limiting groove is arranged on a periphery of the fan assembly, and the first clamping part extends into the first limiting groove.

5. The air duct structure according to claim 1, wherein A second limiting groove parallel to an axis of the first mounting cavity is arranged around a periphery of the first mounting cavity, and a first limiting strip parallel to an axis of the fan assembly is arranged on a periphery of the fan assembly, the first limiting strip extending into the second limiting groove.

6. The air duct structure according to claim 1, wherein A third limiting groove parallel to an axis of the second mounting cavity is arranged around a periphery of the second mounting cavity, and a second limiting strip parallel to an axis of the fan assembly is arranged on a periphery of the fan assembly, the second limiting strip extending into the third limiting groove.

7. A duct structure according to any one of claims 1 to 6, wherein The air duct structure further comprises a display screen, the display screen being arranged at the air outlet and fixed with the fan assembly or the front shell.

8. A duct structure according to claim 7, wherein The air duct structure further comprises a decorative cover, the decorative cover being clamped at the air outlet of the front shell, the decorative cover comprising a transparent area at a central position thereof and air outlet holes arranged around a periphery of the transparent area, the transparent area corresponding to the display screen, and the air outlet holes communicating with the air outlet.

9. A handheld fan comprising the air duct structure according to any one of claims 1-8, a handle being fixed at a lower end of the front shell or / and the rear shell.

10. A hand fan according to claim 9, wherein, A first handle part is formed by extending a lower end of the rear shell, and a second handle part is formed by extending a lower end of the front shell, the handle being formed by clamping the first handle part and the second handle part.

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