Electric hair drier tuyere capable of switching air outlets in two directions

Abstract

The utility model discloses an electric hair drier tuyere capable of switching air outlets bidirectionally, which comprises a first shell used for being connected with an external electric hair drier, the first shell is provided with a hollow air cavity, the bottom of the first shell is provided with an air inlet communicated with the air cavity, and the side wall of the first shell is provided with a first air outlet communicated with the air cavity; the air conditioner further comprises an inner support and a second air outlet, the inner support is rotationally arranged in the first shell, the inner support is provided with a first sealing piece, and the inner support is rotated to be in linkage with the first sealing piece to seal the first air outlet or the second air outlet. A first air guide plate is arranged on the outer wall of the first shell, two second air guide plates are arranged on the two sides of the first air guide plate at intervals, gaps between the two second air guide plates and the first air guide plate communicate with the first air outlet and the second air outlet correspondingly, arc-shaped outer convex faces are formed on the two air guide plates, and air flow flowing out of the air outlets flows in the mode of being attached to the arc-shaped outer convex faces. Air flow can flow out of the first air outlet or the second air outlet by rotating the inner support in a reciprocating mode.

Description

Technical Field

[0001] The utility model relates to the technical field of beauty and hairdressing, and in particular discloses a hair dryer nozzle with bidirectionally switchable air outlets. Background Art

[0002] Hair dryers play a vital role in our daily lives, leading users to demand higher levels of functionality and convenience. For example, they often opt for a nozzle that allows for convenient curling. However, most current hair dryer nozzle designs lack a bidirectional air outlet switch. Users can only adjust the nozzle's angle to change the direction of the air outlet, limiting their flexibility and effectiveness in styling and curling hair. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a hair dryer nozzle with bidirectionally switchable air outlets to solve the above technical problems.

[0004] To achieve the above-mentioned object, the utility model provides a hair dryer nozzle with a bidirectionally switchable air outlet, comprising a first shell for connecting to an external hair dryer, an air inlet being provided at one end of the first shell, a hollow interior of the first shell forming an air cavity communicating with the air inlet, and a first air outlet communicating with the air cavity being provided on a side wall of the first shell;

[0005] The inner bracket is placed in the first housing, and the inner bracket and the first housing are arranged to rotate relative to each other. The inner bracket has a first sealing member, and the inner bracket rotates relative to the first housing so that the first sealing member contacts and seals the first air outlet or the second air outlet.

[0006] The outer wall of the first shell is provided with a first air guide plate, and two second air guide plates are arranged on both sides of the first air guide plate at intervals. The gaps between the two second air guide plates and the first air guide plate are connected to the first air outlet and the second air outlet respectively. The first air guide plate and the second air guide plate are both formed with an arc-shaped outer convex surface, and the airflow direction at the first air outlet is opposite to the airflow direction at the second air outlet.

[0007] Furthermore, the side wall of the first shell is provided with a plurality of partition plates, and the plurality of partition plates are spaced apart around the central axis of the first shell, and a plurality of guide plates are spaced apart on both sides of each partition plate, and the extension directions of the guide plates on one side of the partition plate and the guide plates on the other side of the partition plate are symmetrically arranged in opposite directions, and the plurality of guide plates are arranged in an array along the length direction of the partition plate, and the gap between two adjacent guide plates forms a first air outlet or a second air outlet.

[0008] Furthermore, a windshield is provided between two adjacent partition plates, and the two ends of the guide plate are respectively arranged on the windshield and the partition plate. The first wind guide plate is attached to the outer walls of the partition plate and the guide plate, and the second wind guide plate is attached to the outer wall of the windshield.

[0009] Furthermore, the first air guide plate and the second air guide plate are of an integrated structure.

[0010] Preferably, the first air guide plate and the second air guide plate are formed by integrally stamping metal.

[0011] Furthermore, the thickness D of the first air guide plate and the second air guide plate are both 0.4-1.2 mm.

[0012] Furthermore, there are multiple first seals, and the multiple first seals are arranged at intervals around the central axis of the inner bracket. A guide port connecting the air cavity, the first air outlet and the second air outlet is provided between two adjacent first seals. When the first seal seals the first air outlet, the airflow in the air cavity flows out to the second air outlet through the guide port.

[0013] Furthermore, a side of the first sealing member close to the first shell is provided with an annular flexible rib, and the flexible rib is interference-fitted with the inner wall of the first shell to seal the first air outlet or the second air outlet.

[0014] Furthermore, the cross sections of the inner bracket and the first shell are both annular, and the inner diameter of the first shell gradually decreases from the air inlet to the end away from the air inlet.

[0015] Furthermore, the curvature of the arc-shaped outer convex surface of the first air guide plate is smaller than the curvature of the arc-shaped outer convex surface of the second air guide plate, and the second air guide plate is arranged in a "C" shape.

[0016] Furthermore, the distance L between the end surface of the first air guide plate close to the first air outlet and the end surface of the first air guide plate close to the second air outlet and the outer wall of the first shell is 0.25-0.45 mm.

[0017] Furthermore, one end of the inner bracket is provided with a mounting protrusion, and the end of the first shell away from the air inlet is provided with a mounting hole that cooperates with the mounting protrusion. The mounting protrusion protrudes out of the mounting hole and is rotatably connected to the first shell.

[0018] Furthermore, a control knob is provided at the end of the mounting protrusion, and a limit bar is provided on the control knob. Two stop plates are provided on the first shell to stop and limit the limit bar. When the control knob is rotated, the limit bar can only move between the two stop plates, thereby preventing excessive rotation of the inner bracket.

[0019] Furthermore, an arc-shaped protrusion is provided on the control knob, and a rhythm plate that cooperates with the control knob is provided on the first shell. An elastic arm is provided on the periphery of the rhythm plate, and two arc-shaped grooves for accommodating the arc-shaped protrusion are provided on the elastic arm. The reciprocating rotation of the control knob can make the arc-shaped protrusion move alternately in the two arc-shaped grooves to generate a rotational rhythm.

[0020] 20. The vent opening of claim 19, wherein the at least one air outlet of the hair dryer is configured to be vented relative to the at least one air outlet of the hair dryer. The at least one air outlet of the hair dryer is configured to be vented relative to the at least one air outlet of the hair dryer.

[0021] The beneficial effects of the present invention are as follows: through the relative rotation of the inner bracket, the user can select air outlets with different air outlet directions to adapt to different blowing needs and wind type designs. The design of the first seal plus the flexible ribs ensures that when the air outlet is switched, the unused air outlet is effectively closed, reducing energy loss; the air nozzle is cylindrical throughout, and the inner diameter of the first shell gradually decreases from the air inlet to the end away from the air inlet, which can increase the air flow velocity in the air cavity, make the air flow more concentrated and quickly cover the hair surface, and improve the drying and curling effect; the air guide plate is stamped into a star-shaped metal integral body, which further provides the structural strength of the air nozzle, improves the heat conduction efficiency, and increases the durability of the air nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the exploded structure of the utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of part A;

[0024] Figure 3 for Figure 1 Schematic diagram of the enlarged structure of part B;

[0025] Figure 4 This is a schematic diagram of the airflow path of the first air outlet after sectioning of the present invention;

[0026] Figure 5 This is a schematic diagram of the airflow path of the second air outlet after sectioning of the present invention;

[0027] Figure 6 This is a schematic diagram of a partial cross-section of the structure of the utility model when the first air outlet is open;

[0028] Figure 7 This is a partial cross-sectional structural diagram of the utility model when the second air outlet is open;

[0029] Figure 8 for Figure 7 Schematic diagram of the enlarged structure of part C;

[0030] Figure 9 This is a schematic structural diagram of the utility model showing the first housing and the air guide member being installed in cooperation after sectioning;

[0031] Figure 10 This is a schematic structural diagram of the second installation slot after sectioning of the present invention;

[0032] Figure 11 This is a schematic diagram of the three-dimensional structure of the first shell after cutting of the present invention;

[0033] Figure 12 for Figure 11 Schematic diagram of the enlarged structure of part E;

[0034] Figure 13 It is a schematic diagram of the three-dimensional structure of the air guide, the first shell, the inner bracket and the soft rubber sleeve of the utility model;

[0035] Figure 14 It is a schematic diagram of the three-dimensional structure of the utility model.

[0036] Reference numerals include:

[0037] 1. First shell; 2. Inner bracket; 3. First air guide plate; 4. Control knob; 5. Rhythm plate; 11. Air cavity; 12. Air inlet; 121. Connecting piece; 13. First air outlet; 14. Second air outlet; 15. Partition plate; 16. Air guide plate; 17. Wind shield; 171. Second mounting slot; 18. Mounting hole; 19. Stop plate; 20. Soft rubber sleeve; 21. First sealing piece; 212. First mounting slot; 22. Air guide port; 23. Flexible rib; 24. Mounting protrusion; 31. Second air guide plate; 300. Air guide piece; 41. Limiting strip; 42. Arc-shaped protrusion; 51. Elastic arm; 52. Arc-shaped groove. DETAILED DESCRIPTION

[0038] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention.

[0039] See also Figures 1 to 14As shown, the utility model is a hair dryer nozzle with a bidirectional switchable air outlet, comprising a cylindrical first shell 1, the first shell 1 having a hollow air cavity 11, an air inlet 12 connected to the air cavity 11 is provided at the bottom of the first shell 1, and a connector 121 for connecting to an external hair dryer (which can be a threaded connection, a magnetic connection, a snap connection, etc.) is provided at the air inlet 12, and a first air outlet 13 connected to the air cavity 11 is provided on the side wall of the first shell 1;

[0040] It also includes an inner bracket 2 and a second air outlet 14 connected to the air cavity 11. The inner bracket 2 is placed in the first shell 1. The inner bracket 2 and the first shell 1 can rotate relative to each other. The inner bracket 2 has a first sealing member 21. The outer wall of the inner bracket 2 is concave inward to form a plurality of first mounting grooves 212. In actual use, the inner bracket 2 can be made of a flexible material. At this time, the side walls of the first mounting grooves 212 can be used to close the first air outlet 13 or the second air outlet 14; the inner bracket 2 rotates relative to the first shell 1 so that the first sealing member 21 contacts and closes the first air outlet 13 or the second air outlet 14, or the first shell 1 is rotated relative to the inner bracket 2 to achieve the same purpose.

[0041] The outer wall of the first shell 1 is provided with a first air guide plate 3 for covering part of the first air outlet 13 and the second air outlet 14. Two second air guide plates 31 are arranged at intervals on both sides of the first air guide plate 3. The gaps between the two adjacent second air guide plates 31 and the first air guide plate 3 are connected to the first air outlet 13 and the second air outlet 14 respectively. The first air guide plate 3 and the second air guide plate 31 are both arranged in an arc shape and form an arc-shaped outer convex surface. The wind flow out of the air outlet flows along the arc-shaped outer convex surface, and the second air guide plates 31 on both sides of the first air guide plate 3 can make the wind flow direction at the first air outlet 13 opposite to the wind flow direction at the second air outlet 14; when in use, the user rotates the inner bracket 2 to switch the air outlet and then switch to different wind flow directions.

[0042] Specifically, please combine Figure 1 and Figure 11 As shown, the side wall of the first shell 1 is provided with a plurality of partition plates 15. In this embodiment, there are 6 partition plates 15, and the 6 partition plates 15 are arranged in a circular array around the central axis of the first shell 1 and are arranged at intervals. A plurality of guide plates 16 are arranged at intervals on both sides of each partition plate 15, and the extension directions of the guide plates 16 located on one side of the partition plate 15 and the guide plates 16 located on the other side of the partition plate 15 are symmetrically cross-arranged.

[0043] In this embodiment, a wind shield 17 is provided between two adjacent partition plates 15. The number of wind shields 17 is consistent with the number of partition plates 15. Six wind shields 17 are arranged in an array around the central axis of the first shell 1. The guide plate 16 extends from the partition plate 15 in a direction close to the wind shield 17 and extends toward the air inlet 12; multiple guide plates 16 are arranged in an array along the length direction of the partition plate 15 (that is, the axial direction of the first shell 1). Observing from the outside of the first shell 1 to the wind cavity 11: the gap between the two adjacent guide plates 16 located on the left side of the partition plate 15 is the first air outlet 13, and the gap between the two adjacent guide plates 16 located on the right side of the partition plate 15 is the second air outlet 14. This structure allows the first air outlet 13 and the second air outlet 14 on the left and right sides of the partition plate 15 to be blown downward, that is, toward the air inlet 12, under the guiding action of the guide plate 16 (combined with the guide plate with an arc-shaped outer convex surface, the wind can flow along the surface of the guide plate 16 and flow downward, thereby forming a downward spiral wind, which can achieve the purpose of curling hair when used with a hair dryer).

[0044] Specifically, please combine Figure 9 、 Figure 10 、 Figure 11 As shown, in this embodiment, the ends of the guide plate 16 are respectively mounted on the wind shield 17 and the partition plate 15. The first guide plate 3 is attached to the outer walls of the partition plate 15 and the guide plate 16. The outer wall of the wind shield 17 is formed with an arc-shaped second mounting groove 171, and the second guide plate 31 is mounted within the second mounting groove 171. The array of wind shields 17, guide plates 16, and partition plates 15 balances the airflow within the air cavity 11, ensuring a uniform air volume at each air outlet, reducing turbulence and improving airflow reliability.

[0045] Specifically, in this embodiment, there are six first sealing members 21, and the six first sealing members 21 are arranged in an array around the central axis of the inner bracket 2. The first sealing members 21 are provided with a guide port 22 connecting the air cavity 11 and the first air outlet 13 and the second air outlet 14. The six first sealing members 21 are of an integrated structure. In actual production, the first sealing members 21 can be made of silicone. The first sealing members 21 protrude from the outer surface of the inner bracket 2 (please refer to the embodiment of FIG. 1 ). Figure 3 As shown) is used to cover the first air outlet 13 and the second air outlet 14. When the first sealing member 21 covers the first air outlet 13, the airflow in the air cavity 11 flows out to the second air outlet 14 through the guide port 22; when the first sealing member 21 covers the second air outlet 14, the airflow in the air cavity 11 flows out to the first air outlet 13 through the guide port 22.

[0046] Specifically, there are multiple first air guide plates 3 and second air guide plates 31. One first air guide plate 3 corresponds to one partition plate 15, and one second air guide plate 31 corresponds to one wind shield plate 17, that is, there are 6 first air guide plates 3 and 6 second air guide plates 31. In actual use, the 6 evenly arranged air guide plates allow the airflow to flow along the arc-shaped outer convex surface when flowing out of the air outlet, and form a uniform spiral wind on the outer wall of the air nozzle for users to use when curling their hair.

[0047] Specifically, see Figure 1 and Figure 2 As shown, each first sealing member 21 is provided with an annular flexible rib 23 on one side proximal to the first housing 1. The flexible rib 23 is used to cover the first air outlet 13 or the second air outlet 14, and the flexible rib 23 forms an interference fit with the inner wall of the first housing 1. In this embodiment, the circumference of the air guide opening 22 of the inner bracket 2 (i.e., the outer wall of the first sealing member 21) is protruding outward, forming a first mounting groove 212 between the side walls of two adjacent protruding air guide openings 22.

[0048] Specifically, please combine Figure 1 and Figure 2 As shown, the multiple flexible ribs 23 are of an integrated structure, that is, the multiple flexible ribs 23 are formed into a soft rubber sleeve 20 by integral injection molding, and the soft rubber sleeve 20 is connected to the inner bracket 2 by a bonding process, a rubber encapsulation process, or a two-color injection molding process. For example, in actual production, the integrated soft rubber sleeve 20 can be formed by injection molding liquid silicone onto the inner bracket 2, with the flexible ribs 23 located on the outer wall of the soft rubber sleeve 20. During use, the soft rubber sleeve 20 is mounted on the inner bracket 2 using the first mounting groove 212; when the first air outlet 13 needs to be opened, the second air outlet 14 is completely sealed due to the interference fit between the flexible ribs 23 and the inner wall of the first shell 1, resulting in good sealing performance and less likely to cause air leakage that affects the curling effect.

[0049] Alternatively, the first seal 21 and the flexible rib 23 can both be made of silicone and integrally injection molded. However, when in use, the first seal 21 is exposed to heated air for extended periods of time. This heated air accelerates chemical reactions in the silicone, causing changes in its molecular structure, resulting in a loss of elasticity and softness, and a tendency to harden and embrittle. This phenomenon can reduce the sealing performance of the first seal 21 and even affect the service life of the nozzle. Therefore, this embodiment does not utilize integral injection molding to form the first seal 21 and the flexible rib 23. Instead, the inner bracket 2 is constructed of a high-temperature-resistant hard material to extend the service life of the nozzle.

[0050] Specifically, the inner bracket 2 and first housing 1 both have an annular cross-section. The inner diameter of the first housing 1 gradually decreases from the air inlet 12 toward the end away from the air inlet 12, with the central axes of the inner bracket 2 and first housing 1 coinciding. This gradually decreasing inner diameter of the first housing 1 increases the airflow velocity within the air cavity 11, creating a jet-like effect. This allows the airflow to more closely and quickly cover the hair surface, improving curling efficiency. Furthermore, it reduces air turbulence and energy loss within the air cavity 11, minimizing energy waste.

[0051] For details, please refer to Figure 4 and Figure 5 As shown, the curvature of the first air guide plate 3 is smaller than that of the second air guide plate 31, and the second air guide plate 31 is arranged in a "C" shape. The larger curvature of the "C"-shaped second air guide plate 31 helps to more effectively guide the airflow along a specific path, which can reduce airflow dispersion and provide a larger airflow coverage area, which is very beneficial for evenly heating the entire nozzle. The smaller curvature of the first air guide plate 3 allows the hot air to be delivered to the hair more concentratedly, increasing the local temperature and helping to shape the hair. The combination of the two can balance hair protection and curling, thereby achieving a more ideal styling effect when using a curling iron.

[0052] For details, please refer to Figure 7 and Figure 9 As shown, the thickness D of the first and second air guide plates 3, 31 is 0.4-1.2 mm. In this embodiment, the first and second air guide plates 3, 31 are integrally stamped from a metal material to form a cylindrical air guide member 300. In actual use, the air guide member 300 is mounted on the first housing 1 and detachably connected thereto. Compared to CNC machining, the integral stamping process is more efficient and less costly, resulting in the air guide member 300 having greater structural strength and more beneficial thermal conductivity, enabling faster hair styling and achieving better results. In actual production, the first and second air guide plates 3, 31 can be made of non-metallic materials with good thermal conductivity, such as ceramic. The first and second air guide plates 3, 31 can also be constructed as separate parts, manufactured separately and then assembled together for use. However, this design can easily affect air guide efficiency over long periods of use. Therefore, this embodiment uses an integral manufacturing process to form the air guide member 300.

[0053] In addition, compared with air guide plates with a thickness of less than 0.4mm and more than 1.2mm, after testing, air guide plates within the range of 0.4-1.2mm can maximize the heat conduction efficiency of the air guide plates while reducing the structural strength as little as possible, further improving the efficiency of curling and drying hair, as well as the durability of the air nozzle.

[0054] For details, please refer to Figure 7 and Figure 8As shown, the distance L between the end of the first air guide plate 3 close to the first air outlet 13 and the end of the first air guide plate 3 close to the second air outlet 14 and the outer wall of the first shell 1, i.e., the air outlet gap, is 0.25-0.45 mm. In this embodiment, the first air guide plate 3 is attached to the outer wall of the first shell 1, i.e., the outer wall of the guide plate 16 corresponding to the partition plate 15 and the partition plate 15, thereby partially blocking the first air outlet 13 and the second air outlet 14, so that the air outlet gap between the first air outlet 13 and the second air outlet 14 is 0.25-0.45 mm. This smaller air outlet spacing can more accurately control the direction and speed of the airflow. The speed and pressure of the airflow when flowing through the first air outlet 13 and the second air outlet 14 under the shielding of the first air guide plate 3 are further improved, which helps to quickly curl the hair, and can also achieve quick styling even for the roots and ends of the hair. In addition, tests have shown that an air outlet gap within this range can reduce the formation of air turbulence when the air nozzle is in use, thereby reducing noise and vibration.

[0055] For details, please refer to Figure 1 、 Figure 11 、 Figure 12 As shown, one end of the inner bracket 2 is provided with a mounting protrusion 24, and the end of the first shell 1 away from the air inlet 12 is provided with a mounting hole 18 for cooperating with the mounting protrusion 24. The mounting protrusion 24 protrudes out of the mounting hole 18 and is rotatably connected to the first shell 1. A control knob 4 is provided at the end of the mounting protrusion 24, and a limit strip 41 is provided on the control knob 4. The first shell 1 is provided with two stoppers 19 used in conjunction with the limit strip 41; an arc-shaped protrusion 42 is provided on the control knob 4, and the first shell 1 is also provided with a rhythm piece 5 cooperating with the control knob 4, and an elastic arm 51 is provided on the outer side of the rhythm piece 5, and the elastic arm 51 is provided with two arc-shaped grooves 52 for accommodating the arc-shaped protrusion 42.

[0056] In actual use, the user rotates the control knob 4 to drive the inner bracket 2 to rotate. When the control knob 4 is turned, the limit bar 41 is stopped by a stopper 19, and the first sealing member 21 covers the first air outlet 13. The control knob 4 is turned again, and the limit bar 41 is stopped by another stopper 19, and the first sealing member 21 immediately covers the second air outlet 14. By rotating the control knob 4 back and forth, the first air outlet 13 and the second air outlet 14 can be switched. During this process, the arc-shaped protrusion 42 alternates within the two arc-shaped grooves 52, and the elastic potential energy of the elastic arm 51 produces a rhythmic sound. The user can use this rhythmic sound to identify different air outlets, enhancing the applicability of the nozzle.

[0057] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A hair dryer nozzle with a bidirectionally switchable air outlet, comprising a first housing (1) for connecting to an external hair dryer, an air inlet (12) being provided at one end of the first housing (1), an air cavity (11) being formed in the interior of the first housing (1) and communicating with the air inlet (12), and a first air outlet (13) being provided on a side wall of the first housing (1) and communicating with the air cavity (11); characterized in that: It also includes an inner bracket (2) and a second air outlet (14) communicating with the air cavity (11), wherein the inner bracket (2) is placed in the first shell (1), and the inner bracket (2) and the first shell (1) are arranged to rotate relative to each other, and the inner bracket (2) has a first sealing member (21), and the inner bracket (2) rotates relative to the first shell (1) so that the first sealing member (21) contacts and closes the first air outlet (13) or the second air outlet (14); The outer wall of the first shell (1) is provided with a first air guide plate (3), and two second air guide plates (31) are spaced apart on both sides of the first air guide plate (3). The gaps between the two second air guide plates (31) and the first air guide plate (3) are connected to the first air outlet (13) and the second air outlet (14), respectively. The first air guide plate (3) and the second air guide plate (31) are both formed with an arc-shaped outer convex surface, and the airflow direction at the first air outlet (13) is opposite to the airflow direction at the second air outlet (14).

2. The hair dryer nozzle with bidirectionally switchable air outlet according to claim 1, characterized in that: The side wall of the first shell (1) is provided with a plurality of partition plates (15), the plurality of partition plates (15) are spaced apart around the central axis of the first shell (1), a plurality of guide plates (16) are spaced apart on both sides of each partition plate (15), the guide plates (16) located on one side of the partition plate (15) and the guide plates (16) located on the other side of the partition plate (15) are symmetrically arranged in opposite directions, the plurality of guide plates (16) are arranged in an array along the length direction of the partition plate (15), and the gap between two adjacent guide plates (16) forms a first air outlet (13) or a second air outlet (14).

3. The hair dryer nozzle with bidirectionally switchable air outlet according to claim 2, characterized in that: A windshield (17) is provided between two adjacent partition plates (15); the two ends of the guide plate (16) are respectively provided on the windshield (17) and the partition plate (15); the first windshield (3) is attached to the outer walls of the partition plate (15) and the guide plate (16); and the second windshield (31) is attached to the outer wall of the windshield (17).

4. The hair dryer nozzle with bidirectionally switchable air outlet according to claim 1, characterized in that: The first air guide plate (3) and the second air guide plate (31) are of an integrated structure.

5. The hair dryer nozzle with bidirectionally switchable air outlet according to claim 1, characterized in that: A plurality of the first sealing members (21) are provided, and the plurality of first sealing members (21) are spaced apart around the central axis of the inner bracket (2). A guide port (22) connecting the air cavity (11), the first air outlet (13), and the second air outlet (14) is provided between two adjacent first sealing members (21). When the first sealing member (21) seals the first air outlet (13), the airflow in the air cavity (11) flows out to the second air outlet (14) via the guide port (22).

6. The hair dryer nozzle with bidirectionally switchable air outlet according to claim 1, characterized in that: A side of the first sealing member (21) close to the first shell (1) is provided with an annular flexible rib (23), and the flexible rib (23) is interference-fitted with the inner wall of the first shell (1) to seal the first air outlet (13) or the second air outlet (14).

7. The hair dryer nozzle with bidirectionally switchable air outlet according to claim 1, characterized in that: The cross sections of the inner bracket (2) and the first shell (1) are both annular, and the inner diameter of the first shell (1) gradually decreases from the air inlet (12) to the end away from the air inlet (12).

8. The hair dryer nozzle with bidirectionally switchable air outlet according to claim 1, characterized in that: The curvature of the arc-shaped outer convex surface of the first air guide plate (3) is smaller than the curvature of the arc-shaped outer convex surface of the second air guide plate (31), and the second air guide plate (31) is arranged in a "C" shape.

9. The hair dryer nozzle with bidirectionally switchable air outlet according to claim 4, characterized in that: The first air guide plate (3) and the second air guide plate (31) are formed by integrally stamping metal.

10. The hair dryer nozzle with bidirectionally switchable air outlet according to claim 1, characterized in that: The distance L between the end surface of the first air guide plate (3) close to the first air outlet (13) and the end surface of the first air guide plate (3) close to the second air outlet (14) and the outer wall of the first shell (1) is 0.25-0.45 mm.

11. A hair dryer nozzle with bidirectionally switchable air outlet according to any one of claims 1, 4, and 9, characterized in that: The thickness D of the first air guide plate (3) and the second air guide plate (31) are both 0.4-1.2 mm.

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