Hand fan with adjustable air outlet direction

Abstract

The utility model relates to a handheld fan of adjustable air -out direction, including fan department and handle part, the fan department includes air duct shell and its inside fan module, the handle part includes handle shell and its inside control circuit board and battery, the air duct shell lower extreme and handle shell upper extreme are all inclined plane, and the inclined plane of both is compatible, the air duct shell is connected with handle shell through a rotation adjusting mechanism, the rotation adjusting structure includes the rotation pressure disc of setting in the air duct shell lower extreme, and the elastic sheet is fixed in the handle shell inside, the fan department can rotate the adjustment relative to handle part, and through the convex bone of elastic sheet and the engagement of different tooth groove of rotation pressure disc realizes multi -gear positioning, the utility model has the technical effect that flexible, multi -angle adjustment and positioning can be realized in itself.

Description

Technical Field

[0001] This utility model relates to a handheld blower, and more particularly to a handheld fan with adjustable airflow direction at multiple angles. Background Technology

[0002] Handheld fans are widely popular due to their portability. To improve the user experience, designs with adjustable airflow angles have emerged on the market. For example, Chinese utility model patent CN214945202U discloses a handheld fan with a base, which allows the fan to be tilted at a fixed angle (e.g., 7.5°) relative to the table by inserting the handle of the handheld fan into an inclined insertion slot of a specially designed base, thereby enabling the airflow direction to be adjusted upwards or downwards.

[0003] However, this existing technology has significant limitations: First, its angle adjustment function relies entirely on the external base; once detached from the base, the handheld fan itself cannot be adjusted at any angle, lacking flexibility. Second, even with the base, the adjustment angle is fixed and limited (e.g., only 7.5° upward or downward), failing to meet users' personalized needs for airflow at any angle. Finally, this solution adds an extra base accessory, increasing cost and portability. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a handheld fan with adjustable airflow direction, which can achieve flexible and multi-angle adjustment without the need for external accessories, in order to address the above-mentioned defects of the prior art.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0006] A handheld fan with adjustable airflow direction is provided, comprising a fan section and a handle section. The fan section includes a duct housing and a fan module inside it. The handle section includes a handle housing and a control circuit board and a battery inside it. The lower end of the duct housing and the upper end of the handle housing are both inclined surfaces, and the inclined surfaces of the two are adapted to each other. The duct housing is connected to the handle housing through a rotation adjustment mechanism, the rotation adjustment mechanism including:

[0007] A rotating pressure plate is fixedly installed at the lower end of the air duct housing, and the outer circumference of the rotating pressure plate is provided with evenly distributed toothed grooves.

[0008] A spring plate is fixed to the inner support of the handle inside the handle housing, and the spring plate is provided with a protrusion that matches the toothed groove of the rotating pressure plate.

[0009] The fan section can be rotated relative to the handle section, and multiple gear positions can be achieved by the engagement of the protrusion with different tooth grooves.

[0010] Furthermore:

[0011] It also includes a rotation limiting structure, which includes a limiting spring on the inner bracket of the handle and a groove at the lower end of the air duct shell; when the air duct shell is rotated to a certain angle, the limiting spring abuts against the groove to achieve mechanical limiting.

[0012] The rotation limiting structure also includes a protrusion on the inner bracket of the handle and a 180-degree arc groove at the lower end of the air duct housing. When the fan part rotates relative to the handle part, the protrusion slides in the groove, so that the fan part can be rotated and adjusted relative to the handle part within the range of 0° to 180°.

[0013] The lower end of the air duct housing and the rotating pressure plate are provided with wire holes for threading wires that connect the fan module and the display panel. These wires are connected to the control circuit board and battery inside the handle.

[0014] The battery is housed within the inner bracket of the handle, and the control circuit board is fixed to the outer wall of the inner bracket of the mobile phone.

[0015] The fan module is installed inside the air duct housing using motor vibration damping adhesive.

[0016] The handle housing is equipped with wind speed increase / decrease buttons and a power switch, and the bottom of the handle housing is equipped with silicone feet.

[0017] The upper end of the duct shell is provided with an air outlet, and the side wall of the duct shell is provided with an air inlet.

[0018] The air duct housing is equipped with a display panel.

[0019] The duct housing and the handle housing are cylindrical in shape with the same diameter.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Integrated angle adjustment: No external base or accessories are required. Users can operate it directly in hand, easily rotate the fan head to the desired angle and keep it stable. The degree of freedom and flexibility is far greater than that of solutions that rely on a fixed angle base.

[0022] 2. Excellent operating feel: Through the cooperation of the spring protrusion and the toothed groove of the rotating pressure plate, it can provide clear tactile feedback and "click" sound feedback during adjustment, with accurate positioning and good user experience.

[0023] 3. Reliable and safe structure: An independent mechanical limit structure ensures that the rotation angle will not exceed the travel limit, effectively protecting the internal cables. The motor damping rubber reduces vibration and noise.

[0024] 4. Cost and portability advantages: It eliminates the cost and carrying burden of an additional base, and all functions are integrated into the main unit, making it more economical and practical. Attached Figure Description

[0025] Figure 1 This is an exploded view of an embodiment of the handheld fan of this utility model;

[0026] Figure 2 This is a cross-sectional schematic diagram of an embodiment of the handheld fan of this utility model;

[0027] Figure 3 This is a front view of the handheld fan embodiment of the present invention in a non-rotational adjustment state;

[0028] Figure 4 This is a three-dimensional schematic diagram of the rotation adjustment state of an embodiment of the handheld fan of this utility model;

[0029] Figure 5 This is a side view of the rotating adjustment state of an embodiment of the handheld fan of this utility model;

[0030] Figure 6 This is a schematic diagram of the wire hole structure of an embodiment of the handheld fan of this utility model;

[0031] Figure 7 This is a schematic diagram of the installation of the rotation adjustment structure of the handheld fan embodiment of this utility model;

[0032] Figure 8 This is a schematic diagram illustrating the operating principle of the rotation adjustment structure of the handheld fan embodiment of this utility model;

[0033] Figure 9 This is a schematic diagram of the rotation limiting structure of an embodiment of the handheld fan of this utility model. Detailed Implementation

[0034] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0035] like Figures 1 to 9 As shown, a handheld fan with adjustable airflow direction includes a fan part 100 and a handle part 200. The fan part includes an air duct housing 9 and a fan module 7 inside it. The handle part includes a handle housing 18 and a control circuit board 15 and a battery 13 inside it.

[0036] Both the lower end of the duct housing and the upper end of the handle housing are sloped, and their slopes are compatible. The duct housing 7 is connected to the handle housing 18 via a rotary adjustment mechanism. Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, the rotation adjustment structure includes:

[0037] The rotating pressure plate 10 is fixedly mounted on the lower end of the air duct housing 7 by rotating pressure plate screws 11. The outer circumference of the rotating pressure plate 10 is provided with evenly distributed tooth grooves.

[0038] The spring piece 12 is made of hardware material and is fixed to the inner support 14 of the handle inside the handle housing 18 by the spring piece screw 21. The spring piece 21 is provided with a protrusion that matches the tooth groove of the rotating pressure plate 10.

[0039] The fan section can be rotated relative to the handle section, and multiple gear positions can be achieved by the engagement of the protrusion with different tooth grooves.

[0040] like Figures 3 to 5 , Figure 8 As shown, when the user applies torque to rotate the air duct housing 9, it will drive the rotating pressure plate 10 to rotate as well. The protrusion at the front end of the spring piece 12 will slide over the toothed groove on the outer ring of the rotating pressure plate 10, and after elastic deformation under pressure, it will rebound and fall into the next toothed groove, thereby achieving gear positioning and bringing a clear operating feel.

[0041] In some embodiments, such as Figure 9 As shown, a rotation limiting structure is provided, which includes a limiting spring 141 on the inner support 14 of the handle and a groove 71 at the lower end of the air duct housing 7. When the air duct housing 7 rotates to a certain angle, the limiting spring 141 abuts against the groove 71 to achieve mechanical limiting, enhancing the feel and safety of use. In addition, the inner support 14 of the handle is also provided with a protrusion 142 and a 180-degree arc groove 72 at the lower end of the air duct housing 7. When the fan part rotates relative to the handle part, the protrusion slides in the groove, so that the fan part can be rotated and adjusted relative to the handle part within the range of 0° to 180°, which can prevent damage to the internal cables caused by 360° infinite rotation.

[0042] To ensure that the internal cables are not affected when the duct housing 9 rotates, such as Figure 1 , Figure 2 and Figure 6 As shown, a cable hole K is provided at the connection between the air duct housing 9 and the inner support 14 of the handle. The flexible flat cable 6 connecting the fan module 7 and the display panel 5 passes through this hole and connects to the control circuit board 15 and battery 13 inside the handle. The wiring is reasonable, safe, and reliable, avoiding tangling and wear. (See Figures 1 and 2.) Figure 2 As shown, in this embodiment, the battery 13 is disposed inside the inner bracket 14 of the handle, and the control circuit board 15 is fixed to the outer wall of the inner bracket 14 of the mobile phone.

[0043] like Figure 1 and Figure 2As shown, the motor damping rubber 8 is placed between the fan module 7 and the air duct housing 9 for vibration damping and noise reduction.

[0044] The handle housing is provided with a wind speed increase / decrease button 16 and a power switch 17, and the bottom of the handle housing 18 is provided with silicone feet 20.

[0045] like Figure 1 and Figure 2 As shown, the upper end of the air duct housing 9 is provided with an air outlet 1, and the side wall of the air duct housing 9 is provided with an air inlet 22. The air duct housing 9 is provided with a display panel 2. The display panel 2 is composed of a digital tube surface sticker 3, a digital tube bracket 4, and a display board 5.

[0046] The duct housing and the handle housing are cylindrical with the same diameter. For example... Figure 3 As shown, when the fan section 100 is not rotating relative to the handle section 200, their central axes are on a straight line, and the handheld fan appears as a cylinder. When the user applies torque to the fan section 100, the fan section 100 rotates relative to the handle section 200, as... Figure 4 As shown, the fan unit 100 can rotate to and maintain an airflow angle desired by the user, such as... Figure 5 The angle shown.

[0047] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and these modifications and substitutions should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A handheld fan with adjustable airflow direction, comprising a fan section and a handle section, the fan section including an air duct housing and a fan module therein, the handle section including a handle housing and a control circuit board and a battery therein, characterized in that, Both the lower end of the duct housing and the upper end of the handle housing are sloped, and their slopes are compatible. The duct housing is connected to the handle housing via a rotary adjustment structure, which includes: A rotating pressure plate is fixedly installed at the lower end of the air duct housing, and the outer circumference of the rotating pressure plate is provided with evenly distributed toothed grooves. A spring plate is fixed to the inner support of the handle inside the handle housing, and the spring plate is provided with a protrusion that matches the toothed groove of the rotating pressure plate. The fan section can be rotated relative to the handle section, and multiple gear positions can be achieved by the engagement of the protrusion with different tooth grooves.

2. The handheld fan according to claim 1, characterized in that: It also includes a rotation limiting structure, which includes a limiting spring on the inner bracket of the handle and a groove at the lower end of the air duct shell; when the air duct shell is rotated to a certain angle, the limiting spring abuts against the groove to achieve mechanical limiting.

3. The handheld fan according to claim 2, characterized in that: The rotation limiting structure also includes a protrusion on the inner bracket of the handle and a 180-degree arc groove at the lower end of the air duct housing. When the fan part rotates relative to the handle part, the protrusion slides in the groove, so that the fan part can be rotated and adjusted relative to the handle part within the range of 0° to 180°.

4. The handheld fan according to claim 1, characterized in that: The lower end of the air duct housing and the rotating pressure plate are provided with wire holes for threading wires that connect the fan module and the display panel. These wires are connected to the control circuit board and battery inside the handle.

5. The handheld fan according to claim 1, characterized in that: The battery is housed within the inner support of the handle, and the control circuit board is fixed to the outer wall of the inner support of the handle.

6. The handheld fan according to claim 1, characterized in that: The fan module is installed inside the air duct housing using motor vibration damping adhesive.

7. The handheld fan according to claim 1, characterized in that: The handle housing is equipped with wind speed increase / decrease buttons and a power switch, and the bottom of the handle housing is equipped with silicone feet.

8. The handheld fan according to claim 1, characterized in that: The upper end of the duct shell is provided with an air outlet, and the side wall of the duct shell is provided with an air inlet.

9. The handheld fan according to claim 1, characterized in that: The air duct housing is equipped with a display panel.

10. The handheld fan according to any one of claims 1 to 9, characterized in that: The duct housing and the handle housing are cylindrical with the same diameter.

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