Hair drier with anti-falling fan blades

Abstract

The utility model relates to the field of hair driers, in particular to a hair drier with anti-falling fan blades. Comprising a shell, fan blades, a rotating shaft and a driving motor; one end of the rotating shaft is fixed to the driving motor, the other end of the rotating shaft penetrates through the fan blades and is provided with a locking part, the locking part abuts against one end faces of the fan blades, the other end faces of the fan blades are provided with elastic pieces, and the elastic pieces apply acting force towards the locking part to the fan blades. And the fan blades abut against the locking part, and the locking part applies acting force to the fan blades, wherein the acting force is opposite to the direction of the elastic piece to the fan blades. The structure that the rotating shaft penetrates through the fan blades is designed, and the locking part is arranged at the tail end of the rotating shaft, so that the fan blades are effectively prevented from falling off in the axial direction, and the connection stability between the fan blades and the rotating shaft is remarkably improved. By means of the design, it is guaranteed that the fan blades can be kept stable when the hair drier operates at a high speed, and potential safety hazards caused by falling of the fan blades are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hair dryer, especially to a fan blade anti -drop hair dryer. BACKGROUND

[0002] In the existing hair dryer technology, the connection stability between the fan blade and the rotating shaft is the key factor to ensure the normal work of the hair dryer and the safety of the user. However, the traditional connection method often adopts tolerance fit or adopts the way of glue connection. For the former, the situation of large fit tolerance will inevitably occur, resulting in too large gap. And for the latter, the hot air generated during the work of the hair dryer will weaken the adhesive force of the glue.

[0003] This not only reduces the performance of the hair dryer, such as unstable output airflow, but also may cause serious safety hazards, such as injury accidents caused by the falling of the fan blade. SUMMARY

[0004] The utility model aims at providing a fan blade anti -drop hair dryer to solve the problem of unstable connection between the fan and the rotating shaft of the hair dryer in the prior art.

[0005] The technical scheme of the utility model is: a fan blade anti -drop hair dryer, including casing, fan blade, rotating shaft and driving motor, one end of the rotating shaft is fixed with the driving motor, the other end penetrates the fan blade and is provided with locking part, the locking part abuts with one end face of the fan blade, the other end face of the fan blade is provided with elastic piece, the elastic piece exerts force to the fan blade towards the locking part, and the fan blade is tightly pressed with the locking part and the locking part exerts force to the fan blade in the opposite direction of the elastic piece.

[0006] Preferably, the locking part is configured as a step structure integrally formed with the end of the rotating shaft, the end of the fan blade is provided with a receiving groove, and the locking part is arranged in the receiving groove.

[0007] Preferably, the end of the fan blade is provided with a raised portion, the raised portion is configured as a circular truncated cone structure, and the receiving groove is arranged in the raised portion.

[0008] Preferably, the locking part is connected with a fastener, and the fastener penetrates the locking part and is connected with the fan blade.

[0009] Preferably, the fastener penetrates the raised portion along the radial direction and is connected with the locking part.

[0010] Preferably, the two ends of the elastic piece are respectively abutted with a first bearing and a second bearing, the end of the fan blade close to the first bearing is provided with an extension, the extension abuts with the first bearing, and the second bearing abuts with the driving motor.

[0011] Preferably, the rotating shaft is gap fit with the fan blade and is fixed with the fan blade through glue.

[0012] Compared with the prior art, the fan blade anti-falling hair dryer has the advantages that:

[0013] (1) The fan blade anti-falling hair dryer has the structure that the rotating shaft penetrates the fan blade, and the locking portion is arranged at the end of the rotating shaft, so that the falling of the fan blade in the axial direction is effectively prevented, and the connection stability between the fan blade and the rotating shaft is significantly enhanced. This design ensures that the fan blade can remain stable when the hair dryer is running at high speed, and avoids the safety hazard caused by the falling of the fan blade.

[0014] (2) The fan blade anti-falling hair dryer further has the fastener mounted on the locking portion, and two different modes are configured for the mounting of the fastener, so that the connection between the fan blade and the rotating shaft is further reinforced, and the overall durability and safety of the hair dryer are improved.

[0015] (3) The fan blade anti-falling hair dryer has the elastic member cooperating with the first bearing and the second bearing to tightly abut the fan blade on the locking portion, which realizes the anti-falling of the fan blade and effectively transmits the torque of the rotating shaft to the fan blade. BRIEF DESCRIPTION OF DRAWINGS

[0016] The fan blade anti-falling hair dryer will be further described below in combination with the drawings and embodiments:

[0017] Figure 1 is a fan blade anti-falling hair dryer structure diagram;

[0018] Figure 2 is a fan blade anti-falling hair dryer sectional view;

[0019] Figure 3 is a rotating shaft structure diagram;

[0020] Figure 4 is a fan blade structure diagram;

[0021] Figure 5 is a fastener one of the connection mode diagrams;

[0022] Figure 6 is a fastener another connection mode diagram;

[0023] Wherein: 1, the housing, 2, the fan blade, 21, the heightening portion, 22, the accommodating groove, 23, the extension, 3, the rotating shaft, 31, the locking portion, 4, the driving motor, 5, the elastic member, 61, the first bearing, 62, the second bearing, 7, the fastener. DETAILED DESCRIPTION

[0024] The content of the fan blade anti-falling hair dryer will be further described in detail below in combination with specific embodiments:

[0025] For example, Figure 1And Figure 2 As shown in the figure, a fan blade anti-falling hair dryer, the structure mainly includes a shell 1, for generating airflow fan blade 2, connected and transmitted power shaft 3 and provide driving force driving motor 4. The shaft 3 of one end through the fastening device with driving motor 4 is stably connected together, so that the driving motor 4 in the work can effectively drive the shaft 3 rotation. And the other end of the shaft 3 is connected with the fan blade 2, to ensure that the fan blade 2 can rotate with the shaft 3, under the driving of the driving motor 4 to realize synchronous rotation, so as to output airflow.

[0026] As shown in the figure, Figures 3 to 6 In order to enhance the stability of the connection between the fan blade 2 and the shaft 3, the shaft 3 is designed to penetrate the fan blade 2 structure, and the end of the shaft 3 is provided with a locking part 31, to prevent the fan blade 2 from falling off the shaft 3 along the axial direction. The locking part 31 is formed by integral molding processing of the end of the shaft 3, forming a step structure. The end of the fan blade 2 close to the driving motor 4 is installed with a elastic element 5, the two ends of the elastic element 5 are in close contact with the first bearing 61 and the second bearing 62 respectively. The end of the fan blade 2 close to the first bearing 61 is designed with an extension part 23, the extension part 23 is closely fitted with the inner ring of the first bearing 61, and the second bearing 62 is in contact with the corresponding part of the driving motor 4. Such design makes the elastic element 5 be compressed when subjected to pressure, thereby generating a force to the fan blade 2 towards the locking part 31, ensuring that the locking part 31 can be closely abutted on the end face of the fan blade 2 away from the driving motor 4, effectively limiting the movement of the fan blade 2 away from the driving motor 4. And the extension part 23 is closely fitted with the inner ring of the first bearing 61, so that the torque of the shaft 3 can be transmitted to the fan blade 2.

[0027] In addition, the end of the fan blade 2 is also designed with a raised part 21, the raised part 21 is provided with a circular table structure, which is convex relative to the other surface of the fan blade 2, and a containing groove 22 is opened in the axial direction of the raised part 21. When the locking part 31 is connected with the fan blade 2, the locking part 31 will be closely abutted in the containing groove 22, further enhancing the connection stability between the fan blade 2 and the shaft 3, and the closely abutted locking part 31 also plays a role in transmitting torque.

[0028] In other embodiments of the present application, the locking part 31 can also be installed with a fastener 7, the fastener 7 will penetrate the locking part 31 and be screwed with the fan blade 2, thereby further reinforcing the connection between the fan blade 2 and the shaft 3. The locking part 31 can have two setting ways: it can be provided in parallel with the shaft 3, as shown in the figure, Figure 5 It can also be provided along the radial direction of the shaft 3, as shown in the figure, Figure 6 Penetrating the raised part 21 of the fan blade 2, realizing the firm fixation of the shaft 3 and the fan blade 2.

[0029] In order to further improve the connection strength between the rotating shaft 3 and the fan blade 2, the rotating shaft 3 is coated with a layer of glue at the part penetrating through the fan blade 2. The layer of glue can be tightly combined with the material of the fan blade 2, firmly fix the rotating shaft 3 and the fan blade 2 together, and ensure that the fan blade 2 and the rotating shaft 3 will not fall off during the working process of the hair dryer.

[0030] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. A fan with a leaf anti-drop, characterized in that, The utility model provides a fan blade locking device, including casing (1), fan blade (2), pivot (3) and drive motor (4), one end of pivot (3) is fixed with drive motor (4), and the other end penetrates fan blade (2) and is provided with locking portion (31), locking portion (31) is opposite with the end face of fan blade (2), and the other end face of fan blade (2) is provided with elastic element (5), and elastic element (5) exerts the force of fan blade (2) towards locking portion (31), and the locking portion (31) of fan blade (2) is tightly closed and makes locking portion (31) exert the force of fan blade (2) in the direction opposite to the elastic element (5) of fan blade (2).

2. A blow fan according to claim 1, wherein The locking portion (31) is configured as a step structure integrally formed with the end of the pivot (3), and the end of the fan blade (2) is provided with a receiving groove (22), and the locking portion (31) is arranged in the receiving groove (22).

3. A blow fan according to claim 2, wherein The end of the fan blade (2) is provided with a raised portion (21), the raised portion (21) is configured as a circular truncated cone structure, and the receiving groove (22) is arranged in the raised portion (21).

4. A blow fan according to claim 2, wherein The locking portion (31) is connected with a fastener (7), the fastener (7) penetrates the locking portion (31) and is connected with the fan blade (2).

5. A blow fan according to claim 4, wherein The fastener (7) penetrates the raised portion (21) along the radial direction and is connected with the locking portion (31).

6. A blow fan with leafs preventing from falling off according to claim 1, characterized in that, The elastic element (5) is abutted with a first bearing (61) and a second bearing (62) at both ends respectively, the end of the fan blade (2) close to the first bearing (61) is provided with an extension portion (23), the extension portion (23) is abutted with the first bearing (61), and the second bearing (62) is abutted with the drive motor (4).

7. A blow fan as claimed in claim 1, wherein The pivot (3) is clearance-fitted with the fan blade (2) and is fixed with the fan blade (2) by glue.

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