Fan handle rotating mechanism capable of rotating by 180 degrees in two directions and blower

Abstract

The utility model relates to the technical field of air blowers, in particular to a fan handle rotating mechanism capable of rotating by 180 degrees in two directions and an air blower, the fan handle rotating mechanism is used for being connected between a handle and an air cylinder of the air blower and comprises a rotating male part, a rotating female part and a rotating base part, the rotating base part is arranged between the rotating male part and the rotating female part, limiting parts are arranged on the two sides of the rotating base part respectively, abutting parts corresponding to the limiting parts are arranged on the rotating male part and the rotating female part respectively, and the rotating male part and the rotating female part rotate by smaller than 360 degrees through cooperation of the abutting parts and the limiting parts. When the fan handle rotating mechanism is applied to the air blower, the handle part and the air duct part of the air blower can rotate by more than 360 degrees, and the rotating angles of the handle part and the air duct part can be limited.

Description

Technical Field

[0001] The utility model relates to the technical field of hair dryers, in particular to a blower handle rotating mechanism with bidirectional 180-degree rotation and a hair dryer. Background Art

[0002] A hair dryer is a hairdressing product used to dry and style hair. It basically has a handle and a barrel. When the hair dryer is not in use, the handle is generally configured as a foldable structure for easy storage. The foldable structure of existing traditional hair dryers generally adopts a hinged manner to form a folding function, but its folding direction can only be folded within a plane, and cannot be folded at multiple angles. In this regard, the prior art has proposed a hot air blower with a foldable handle, as described in the utility model patent authorization announcement No. CN216875361U. The handle of the hot air blower of the utility model is foldable. Since the connection between the handle and the main body is an oblique surface, when the handle is rotated, it will form an angle of 42-50 degrees with the air outlet direction of the main body. Users can adjust the appropriate angle for use according to their needs.

[0003] The prior art also proposes a foldable hair dryer as described in the utility model patent authorization announcement number CN212938528U. Through the setting of a rotating mechanism, the body and the handle can be folded and stored, making it convenient for users to carry and giving users a novel and unique usage experience.

[0004] The rotating mechanism mainly includes an elastic clip, a limiter and a transition shaft. The elastic clip block arranged on the circumferential surface of the elastic clip has a certain elasticity. When the handle is rotated, the handle drives the limiter to rotate, so that the elastic clip block is squeezed by the inner wall of the accommodating hole of the limiter. The elastic clip can realize deformation and contraction by virtue of the setting of the notch portion. When the elastic clip is deformed, the card column partially inserted into the slide groove can move in the slide groove, thereby allowing the limiter to rotate smoothly until the handle is rotated to a specified position and the elastic clip block is inserted into the slot of the limiter, thereby completing the positioning and fixing.

[0005] However, by adopting the structural combination of the transition shaft, the limiter and the elastic clip, the rotation angle cannot be limited, which will cause the handle to rotate more than 360 degrees, causing damage to the wire. If a limiting structure is set, part of the rotation angle will be limited due to the limiting structure, resulting in the handle being unable to rotate a full 360 degrees. Therefore, it is necessary to propose an improved technical solution to solve the above problem. Utility Model Content

[0006] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0007] A blower handle rotating mechanism with bidirectional 180-degree rotation, used to be connected between the handle and the hairdryer of a hair dryer, comprising a rotating male member, a rotating female member, and a rotating base member, wherein the rotating male member is rotatably connected to the rotating female member, the rotating base member is disposed between the rotating male member and the rotating female member, and limiting portions are respectively provided on both sides of the rotating base member, and abutment portions corresponding to the limiting portions are provided on both the rotating male member and the rotating female member, and the rotating male member and the rotating female member respectively rotate less than 360 degrees through the cooperation of the abutment portions with the limiting portions;

[0008] A first annular damping member is provided between the rotating male member and the rotating base member, and the rotating male member and the rotating base member are damped by the first annular damping member. A second annular damping member is also provided between the rotating female member and the rotating base member, and the rotating female member and the rotating base member are damped by the second annular damping member.

[0009] Preferably, the rotating male component includes a transition shaft, a fixing component formed at one end of the transition shaft, and a connecting component formed at the other end of the transition shaft. The rotating male component is rotatably connected to the rotating female component through the connecting component. An annular outer wall is formed on the rotating female component. The connecting component and the rotating base component are both rotatably fitted on the inner side of the annular outer wall, and a chamber for accommodating the first annular damping component, the second annular damping component and the rotating base component is formed between the rotating female component and the connecting component.

[0010] Preferably, the rotating male part is damped by the first annular damping part through a connecting part, wherein a first groove is provided on the connecting part, a first concave portion is provided on the side wall of the first groove, the first annular damping part is an arc-shaped structure, the first annular damping part is fixed on the rotating base part, a first convex portion matching the first concave portion is formed on the outer side of the first annular damping part, the first annular damping part is docked in the first groove, the first annular damping part is squeezed and damped by the first convex portion and the inner side of the first groove, and the first annular damping part is positioned and matched with the rotating male part by docking the first convex portion with the first concave portion.

[0011] Preferably, the rotating base member and the second annular damping member are damped and matched, wherein a second groove is provided on the surface of the rotating base member that docks with the second annular damping member, and a second concave portion is provided on the side wall of the second groove. The second annular damping member is an arc-shaped structure, and the second ring damping member is fixed on the rotating mother member. A second convex portion matching the second concave portion is formed on the outer side of the second annular damping member, and the second annular damping member is docked in the second groove. The second annular damping member is squeezed and damped with the inner side of the second groove by the second convex portion, and the second annular damping member is positioned and matched with the rotating base member by docking the second convex portion with the second concave portion.

[0012] Preferably, at least one first fixing block is formed on the first annular damping member and is connected to the rotating base member, a first fixing hole is provided on the rotating base member and matches the first fixing block, and the first annular damping member is fixed to the rotating base member by the cooperation between the first fixing block and the first fixing hole; at least one second fixing block is formed on the second annular damping member and is connected to the rotating mother member, a second fixing hole is provided on the rotating mother member and matches the second fixing block, and the second annular damping member is fixed to the rotating mother member by the cooperation between the second fixing block and the second fixing hole.

[0013] Preferably, the first convex portion, the second convex portion, the first concave portion and the second concave portion are each provided with two symmetrical portions along the axis of the fan handle rotation mechanism.

[0014] Preferably, the limiting portion is a minor arc structure, the abutting portion has an annular portion that abuts against the rotating base and rotates along the inner side of the limiting portion and a blocking block formed on the outer side of the annular portion, and the abutting portion abuts and cooperates with the limiting portion through the blocking block.

[0015] Preferably, the rotating male component and the rotating female component are respectively rotated less than or equal to 180 degrees through the cooperation between the abutting portion and the limiting portion.

[0016] A hair dryer includes the above-mentioned fan handle rotating mechanism with bidirectional 180-degree rotation, and also includes a handle part for hand-holding and a wind tube part for directional blowing. A perforated inclined portion is provided between the handle part and the wind tube part, and a fixing groove is provided at the inner side of the wind tube part and the handle part corresponding to the perforated inclined portion. The rotating female part is fixedly installed in the fixing groove of the wind tube part, and the rotating male part is fixedly installed in the fixing groove of the handle part through a fixing part. The transition shaft is rotatably connected to the perforated inclined portion of the handle part and the wind tube part respectively; the rotating male part, the rotating female part and the rotating base part are all axially provided with a wire through hole, and wiring is carried out between the handle part and the wind tube part through the wire through hole.

[0017] Preferably, the handle portion has a first handle shell and a second handle shell that cover each other, and a fixing groove is formed in one end of the first handle shell and the second handle shell after they are covered together. The wind tube portion has a first wind tube shell and a second wind tube shell that cover each other, and the fixing groove is formed at the lower position after the first wind tube shell and the second wind tube shell are covered together. A positioning groove is provided on the inner side of the fixing groove, and the outer sides of the rotating mother part and the fixing part are both formed with positioning protrusions that match the positioning grooves. The rotating mother part and the fixing part are respectively fixed with the two positioning grooves through the cooperation of the positioning protrusions and the positioning grooves.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] By providing a separate rotating base component, arranging rotatable rotating male component and rotating female component structures on both sides of the rotating base component, and providing limiting portions on both sides of the rotating base component, and providing abutment portions corresponding to the limiting portions on the rotating male component and the rotating female component, the rotating angle of the rotating male component and the rotating female component around the rotating base component is made not to exceed 360 degrees by utilizing the limiting cooperation of the limiting portion and the abutment portion, while the relative rotation angle of the rotating female component and the rotating male component can be greater than 360 degrees. Through this setting method, the blower handle rotating mechanism is applied to the hair dryer, which will enable the handle and the air cylinder of the hair dryer to rotate greater than 360 degrees and can limit their rotation angle.

[0020] By adopting the structural design of the first annular damping member and the second annular damping member, and by utilizing extrusion fit or elastic deformation, the rotating male part and the rotating female part have a certain damping effect relative to the rotating base part, thereby preventing the rotating male part and the rotating female part from swinging at will, and improving the positioning stability between the wind tube part and the handle part.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 This is a schematic diagram of the exploded structure of the fan handle rotating mechanism of the utility model;

[0024] Figure 2 This is another exploded structural diagram of the fan handle rotating mechanism of the utility model;

[0025] Figure 3 It is a structural diagram of the rotating male part in the utility model;

[0026] Figure 4 This is a structural diagram of the utility model hair dryer in the unfolded state;

[0027] Figure 5 This is a structural diagram of the utility model hair dryer in the storage state;

[0028] Figure 6 This is a schematic diagram of the exploded structure of the utility model hair dryer;

[0029] Figure 7 It is a schematic diagram of the cross-sectional structure of the utility model hair dryer at the position of the blower handle rotating mechanism.

[0030] The reference numerals and names in the figures are as follows:

[0031] Handle portion 1, air cylinder portion 2, inclined portion with hole 3, fixing groove 4, wire through hole 5, positioning groove 6, positioning protrusion 7, rotating male part 10, transition shaft 11, fixing part 12, connecting part 13, first slot 14, first concave portion 15, rotating female part 20, annular outer wall 21, second fixing hole 22, rotating base part 30, limiting portion 31, second concave portion 32, first fixing hole 33, abutting portion 40, annular portion 41, blocking block 42, first annular damping member 50, first convex portion 51, first fixing block 52, second annular damping member 60, second convex portion 61, second fixing block 62, first handle shell 101, second handle shell 102, first air cylinder shell 103, second air cylinder shell 104. DETAILED DESCRIPTION

[0032] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figure 1-7 In an embodiment of the present invention, a blower handle rotating mechanism with bidirectional 180-degree rotation is provided, which is used to be connected between the handle and the hair dryer of the hair dryer, and includes a rotating male part 10, a rotating female part 20 and a rotating base part 30. The rotating male part 10 is rotatably connected to the rotating female part 20. The rotating base part 30 is arranged between the rotating male part 10 and the rotating female part 20. A limiting portion 31 is respectively provided on both sides of the rotating base part 30. The rotating male part 10 and the rotating female part 20 are both provided with abutting portions 40 corresponding to the limiting portions 31. The rotating male part 10 and the rotating female part 20 are respectively rotated less than 360 degrees by the cooperation of the abutting portions 40 and the limiting portions 31.

[0034] A first annular damping member 50 is provided between the rotating male member 10 and the rotating base member 30, and the rotating male member 10 and the rotating base member 30 are damped by the first annular damping member 50. A second annular damping member 60 is also provided between the rotating female member 20 and the rotating base member 30, and the rotating female member 20 and the rotating base member 30 are damped by the second annular damping member 60.

[0035] In the above technical solution, a separate rotating base member 30 is provided, and a rotatable rotating male member 10 and a rotating female member 20 structure are respectively provided on both sides of the rotating base member 30. By respectively providing a limiting portion 31 on both sides of the rotating base member 30, and providing an abutment portion 40 corresponding to the limiting portion 31 on both the rotating male member 10 and the rotating female member 20, the rotating angle of the rotating male member 10 and the rotating female member 20 around the rotating base member 30 does not exceed 360 degrees by utilizing the limiting cooperation between the limiting portion 31 and the abutment portion 40, while the relative rotation angle of the rotating female member 20 and the rotating male member 10 can be greater than 360 degrees. With this setting, the blower handle rotating mechanism is applied to a hair dryer, which can enable the handle portion 1 and the air cylinder portion 2 of the hair dryer to rotate more than 360 degrees and can limit their rotation angles.

[0036] Specifically, a hair dryer is provided, which has the above-mentioned blower handle rotating mechanism, and also includes a handle part 1 for hand-holding and a wind tube part 2 for directional blowing, and a perforated inclined portion 3 is provided between the handle part 1 and the wind tube part 2, and a fixing groove 4 is provided at the inner side position of the wind tube part 2 and the handle part 1 corresponding to the perforated inclined portion 3, the rotating female part 20 is fixedly installed in the fixing groove 4 of the wind tube part 2, and the rotating male part 10 is fixedly installed in the fixing groove 4 of the handle part 1 through a fixing part 12, and the transition shaft 11 is rotatably connected to the handle part 1 and the perforated inclined portion 3 of the wind tube part 2 respectively; the rotating male part 10, the rotating female part 20 and the rotating base part 30 are all axially provided with a wire through hole 5, and wiring is carried out between the handle part 1 and the wind tube part 2 through the wire through hole 5. When in use, when the handle portion 1 is rotated, the rotating base member 30 and the rotating male member 10 can rotate in the same direction relative to the rotating female member 20, and the rotating base member 30 and the rotating male member 10 can also rotate in the same direction, so that the handle portion 1 can rotate more than 360 degrees along the wind tube portion 2. Generally, the rotating male member 10 and the rotating female member 20 are rotated less than or equal to 180 degrees respectively through the cooperation of the abutment portion 40 and the limit portion 31. The sum of the two rotation angles can achieve a rotation less than or equal to 360 degrees. Please refer to Figure 1 In this embodiment, the rotating male component 10 and the rotating female component 20 are respectively rotated 180 degrees through the cooperation of the abutment portion 40 and the limiting portion 31, that is, the handle portion 1 can rotate 360 degrees relative to the wind tube portion 2.

[0037] Since the handle portion 1 is affected by the gravity of the air cylinder portion 2, or the reaction force of the air blowing from the air cylinder portion 2, or even the inertia of the user when moving the hair dryer during use, rotation will occur between the air cylinder portion 2 and the handle portion 1. In order to overcome this, the present embodiment adopts a structural design of a first annular damping member 50 and a second annular damping member 60. By utilizing extrusion fit or elastic deformation, the rotating male component 10 and the rotating female component 20 have a certain damping effect relative to the rotating base component 30, thereby preventing the rotating male component 10 and the rotating female component 20 from swinging at will, thereby improving the positioning stability between the air cylinder portion 2 and the handle portion 1.

[0038] Please refer to Figure 1-3 In this embodiment, the rotating male part 10 includes a transition shaft 11, a fixing part 12 formed at one end of the transition shaft 11, and a connecting part 13 formed at the other end of the transition shaft 11. The rotating male part 10 is rotatably connected to the rotating female part 20 through the connecting part 13. An annular outer wall 21 is formed on the rotating female part 20. The connecting part 13 and the rotating base part 30 are both rotatably fitted on the inner side of the annular outer wall 21, and a chamber for accommodating the first annular damping member 50, the second annular damping member 60 and the rotating base part 30 is formed between the rotating female part 20 and the connecting part 13; by setting the structure of the rotating male part 10, the rotating male part 10 has three parts: the transition shaft 11, the fixing part 12 and the connecting part 13. The connecting part 13 is used to rotatably fit with the annular outer wall 21 on the rotating female part 20, and the rotating base part 30 is also rotatably fitted with the annular outer wall 21, which can greatly improve the overall firmness and stability of the fan handle rotation mechanism.

[0039] Please refer to Figure 1-3In this embodiment, the rotating male member 10 is damped by the first annular damping member 50 through the connecting member 13, wherein a first groove 14 is provided on the connecting member 13, a first concave portion 15 is provided on the side wall of the first groove 14, the first annular damping member 50 is an arc-shaped structure, the first annular damping member 50 is fixed on the rotating base 30, and a first convex portion 51 matching the first concave portion 15 is formed on the outer side of the first annular damping member 50. The first annular damping member 50 is docked in the first groove 14, and the first annular damping member 50 is squeezed and damped by the first convex portion 51 with the inner side of the first groove 14. The first annular damping member 50 is positioned and matched with the rotating male member 10 by the docking of the first convex portion 51 and the first concave portion 15; the rotating base member 30 is damped and matched with the second annular damping member 60, wherein a second groove 31 is provided on the side surface of the rotating base member 30 docking with the second annular damping member 60, and a second concave portion 32 is provided on the side wall of the second groove 31. The second annular damping member 60 is an arc-shaped structure. The second ring damping member is fixed on the rotating female member 20. A second convex portion 61 matching the second concave portion 32 is formed on the outer side of the second annular damping member 60. The second annular damping member 60 is docked at In the second slot 31, the second annular damping member 60 is squeezed and damped with the inner side of the second slot 31 by the second convex portion 61, and the second annular damping member 60 is positioned and matched with the rotating base member 30 by the docking of the second convex portion 61 and the second concave portion 32; by adopting the cooperation of the convex portion and the concave portion, and utilizing the design of the first annular damping member 50 and the second annular damping member 60 as an arc-shaped structure, the first annular damping member 50 and the second annular damping member 60 have a certain elasticity, so that when the handle portion 1 is rotated to make the rotating male member 10, the rotating base member 30 and the rotating female member 20 rotate relative to each other, the first annular damping member 50 and the second annular damping member 60 have a certain elasticity. The first convex portion 51 of the annular damping member 50 and the second convex portion 61 of the second annular damping member 60 are separated from the first concave portion 15 and the second concave portion 32, and the first annular damping member 50 and the second annular damping member 60 will produce elastic deformation, so that the first convex portion 51 and the second convex portion 61 are respectively squeezed and fitted with the first groove 14 and the second groove 31, thereby achieving the purpose of squeeze fitting. When the convex portion and the concave portion are docked here, the handle portion 1 and the wind tube portion 2 will be able to be positioned more stably, thereby ensuring the damping fit between the handle portion 1 and the wind tube portion 2 and also enabling the two to be positioned at a fixed point.

[0040] Please refer to Figure 1-3In this embodiment, at least one first fixing block 52 is formed on the first annular damping member 50 and is connected to the rotating base member 30. A first fixing hole 33 is formed on the rotating base member 30 and matches the first fixing block 52. The first annular damping member 50 is fixed to the rotating base member 30 by the cooperation between the first fixing block 52 and the first fixing hole 33; at least one second fixing block 62 is formed on the second annular damping member 60 and is connected to the rotating mother member 20. A second fixing hole 22 is formed on the rotating mother member 20 and matches the second fixing block 62. The second annular damping member 60 is fixed to the rotating mother member 20 by the cooperation between the second fixing block 62 and the second fixing hole 22. This structural design is simple and compact, and can ensure that the cooperation between the first annular damping member 50 and the rotating base member 30 and the cooperation between the second annular damping member 60 and the rotating mother member 20 are firm and stable.

[0041] Please refer to Figure 1-3 In this embodiment, the first convex portion 51, the second convex portion 61, the first concave portion 15 and the second concave portion 32 are all provided with two symmetrical ones along the axis of the fan handle rotation mechanism. In this embodiment, the limiting portion 31 is a minor arc structure, and the abutting portion 40 has an annular portion 41 that abuts against the rotating base 30 and rotates along the inner side of the limiting portion 31 and a blocking block 42 formed on the outer side of the annular portion 41. The abutting portion 40 abuts and cooperates with the limiting portion 31 through the blocking block 42; through this arrangement, the rotating male part 10 and the rotating female part 20 can be rotated and positioned every 180 degrees, thereby achieving the purpose of being able to position the handle part 1 and the wind cylinder part 2 when both are stored and unfolded.

[0042] Please refer to Figure 6-7 , in this embodiment, the handle portion 1 has a first handle shell 101 and a second handle shell 102 that cover each other, and a fixing groove 4 is formed in one end of the first handle shell 101 and the second handle shell 102 after covering each other, and the wind tube portion 2 has a first wind tube shell 103 and a second wind tube shell 104 that cover each other, and the fixing groove 4 is formed at the lower position after the first wind tube shell 103 and the second wind tube shell 104 are covered, and a positioning groove 6 is provided on the inner side of the fixing groove 4, and the outer sides of the rotating female component 20 and the fixing component 12 are both formed with positioning protrusions 7 that match the positioning groove 6. The rotating female component 20 and the fixing component 12 are respectively fixed with the two positioning grooves 6 through the cooperation of the positioning protrusions 7 and the positioning grooves 6. Through this arrangement, the rotating female component 20 and the rotating male component 10 can be firmly positioned at the docking position between the wind tube portion 2 and the handle portion 1, and by setting the shell structure of the wind tube portion 2 and the handle portion 1, the purpose of facilitating injection molding and assembly can be achieved.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A blower handle rotating mechanism with bidirectional 180-degree rotation, used to connect between the handle and the blower cylinder of a hair dryer, characterized in that: The rotary mechanism comprises a rotating male member, a rotating female member and a rotating base member, wherein the rotating male member is rotatably connected to the rotating female member, the rotating base member is arranged between the rotating male member and the rotating female member, and a limiting portion is respectively arranged on both sides of the rotating base member. The rotating male member and the rotating female member are both provided with abutting portions corresponding to the limiting portions. The rotating male member and the rotating female member respectively rotate less than 360 degrees through the cooperation between the abutting portions and the limiting portions. A first annular damping member is provided between the rotating male member and the rotating base member, and the rotating male member and the rotating base member are damped by the first annular damping member. A second annular damping member is also provided between the rotating female member and the rotating base member, and the rotating female member and the rotating base member are damped by the second annular damping member.

2. A fan handle rotating mechanism with bidirectional 180-degree rotation according to claim 1, characterized in that: The rotating male component includes a transition shaft, a fixing component formed at one end of the transition shaft, and a connecting component formed at the other end of the transition shaft. The rotating male component is rotatably connected to the rotating female component through the connecting component. An annular outer wall is formed on the rotating female component. The connecting component and the rotating base component are both rotatably fitted on the inner side of the annular outer wall, and a chamber for accommodating the first annular damping component, the second annular damping component and the rotating base component is formed between the rotating female component and the connecting component.

3. The fan handle rotating mechanism with bidirectional 180-degree rotation according to claim 2, characterized in that: The rotating male part is damped by the first annular damping part through the connecting part, wherein a first groove is provided on the connecting part, a first concave portion is provided on the side wall of the first groove, the first annular damping part is an arc-shaped structure, the first annular damping part is fixed on the rotating base part, and a first convex portion matching the first concave portion is formed on the outer side of the first annular damping part, the first annular damping part is docked in the first groove, the first annular damping part is squeezed and damped by the first convex portion and the inner side of the first groove, and the first annular damping part is positioned and matched with the rotating male part by docking the first convex portion with the first concave portion.

4. The fan handle rotating mechanism with bidirectional 180-degree rotation according to claim 3, characterized in that: The rotating base member is damped by the second annular damping member, wherein a second groove is provided on a surface of the rotating base member that docks with the second annular damping member, a second concave portion is provided on the side wall of the second groove, the second annular damping member is an arc-shaped structure, the second ring damping member is fixed on the rotating mother member, and a second convex portion matching the second concave portion is formed on the outer side of the second annular damping member, the second annular damping member is docked in the second groove, the second annular damping member is squeezed and damped with the inner side of the second groove by the second convex portion, and the second annular damping member is positioned and matched with the rotating base member by docking the second convex portion with the second concave portion.

5. The fan handle rotating mechanism with bidirectional 180-degree rotation according to claim 4, characterized in that: At least one first fixing block is formed on the first annular damping member and is connected to the rotating base member. A first fixing hole is provided on the rotating base member and matches the first fixing block. The first annular damping member is fixed to the rotating base member by the cooperation between the first fixing block and the first fixing hole. At least one second fixing block is formed on the second annular damping member and is connected to the rotating mother member. A second fixing hole is provided on the rotating mother member and matches the second fixing block. The second annular damping member is fixed to the rotating mother member by the cooperation between the second fixing block and the second fixing hole.

6. The fan handle rotating mechanism with bidirectional 180-degree rotation according to claim 4, characterized in that: The first convex portion, the second convex portion, the first concave portion and the second concave portion are all provided with two symmetrical portions along the axis of the fan handle rotating mechanism.

7. The fan handle rotating mechanism with bidirectional 180-degree rotation according to claim 2, characterized in that: The limiting portion is a minor arc structure, and the abutting portion comprises an annular portion that abuts against the rotating base and rotates along the inner side of the limiting portion and a blocking block formed on the outer side of the annular portion. The abutting portion abuts and cooperates with the limiting portion through the blocking block.

8. The fan handle rotating mechanism capable of bidirectional 180-degree rotation according to claim 7, characterized in that: The rotating male component and the rotating female component are respectively rotated less than or equal to 180 degrees through the cooperation between the abutting portion and the limiting portion.

9. A hair dryer comprising a blower handle rotating mechanism capable of bidirectional 180-degree rotation according to any one of claims 2 to 8, characterized in that: The air blower further comprises a handle portion for holding and an air cylinder portion for directional blowing, wherein an inclined portion with a hole is provided between the handle portion and the air cylinder portion, and fixing grooves are provided at the inner sides of the air cylinder portion and the handle portion corresponding to the inclined portion with a hole, the rotating female component is fixedly installed in the fixing groove of the air cylinder portion, the rotating male component is fixedly installed in the fixing groove of the handle portion through a fixing component, and the transition shaft is rotatably connected to the inclined portion with a hole of the handle portion and the air cylinder portion respectively; the rotating male component, the rotating female component and the rotating base component are all axially provided with a wire through hole, and wiring is carried out between the handle portion and the air cylinder portion through the wire through hole.

10. A hair dryer according to claim 9, characterized in that: The handle portion includes a first handle shell and a second handle shell that cover each other, and a fixing groove is formed in one end of the first handle shell and the second handle shell after they are covered together. The air cylinder portion includes a first air cylinder shell and a second air cylinder shell that cover each other, and the fixing groove is formed at the lower position after the first air cylinder shell and the second air cylinder shell are covered together. A positioning groove is provided on the inner side of the fixing groove, and the outer sides of the rotating mother part and the fixing part are both formed with positioning protrusions that match the positioning grooves. The rotating mother part and the fixing part are respectively fixed with the two positioning grooves through the cooperation of the positioning protrusions and the positioning grooves.

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