Air nozzle for hair drier

Abstract

The tuyere comprises an outer tuyere body and an inner tuyere body, the inner tuyere body is rotatably arranged in the outer tuyere body, an air duct is arranged in the inner tuyere body in a penetrating mode, an air outlet of the air duct is eccentrically arranged relative to the rotating axis of the inner tuyere body, the air duct communicates with an air blowing opening of the air blower, and the air blowing opening discharges air to drive the inner tuyere body to rotate. A balance weight structure is arranged on the outer wall of the inner tuyere, and the gravity center of the balance weight structure and the gravity center of the inner tuyere are located on the two sides of the rotating axis of the inner tuyere respectively, so that the gravity center of a whole formed by the inner tuyere and the balance weight structure is located on the rotating axis of the inner tuyere. In the tuyere for the hair dryer, the counterweight structure enables the inner tuyere to be close to a dynamic balance state as much as possible during rotation, and large deflection and obvious vibration are avoided, so that periodic shaking is avoided, the improvement of the rotation stability of the inner tuyere is facilitated, the user experience is improved, the noise is reduced, and the abrasion between the inner tuyere and a part for supporting the rotation of the inner tuyere is reduced; and the risk of damage to the structural member caused by resonance is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of hair dryers, and in particular to a nozzle for a hair dryer. Background Art

[0002] Hair dryers are mainly used for drying and styling hair and are small household appliances commonly used in people's daily lives.

[0003] When using the hot air function of a traditional hair dryer, you usually need to swing your wrist back and forth to avoid the concentration of hot air and local overheating that may cause heat damage, and to improve the overall dryness of the hair. However, long-term swinging will inevitably cause wrist fatigue and discomfort. Therefore, to solve the above problems, the current mainstream solution is to install a special nozzle to change the direction of the hair dryer's airflow in real time to replace the wrist swinging action.

[0004] For example, the patent application number 201520035274.4 discloses a hair dryer air diffuser nozzle. The wind blown out by the hair dryer enters the air diffuser hood and blows out from its eccentric air diffuser port. The blades in the air diffuser hood drive the air diffuser hood to rotate under the action of the wind, and the eccentric air diffuser port on the air diffuser hood will also rotate, so that the wind can be blown out from different positions. However, it is precisely because of the eccentric air diffuser port of this type of air diffuser hood that the mass is unbalanced. The deviation of the air diffuser port toward one side of the rotation axis of the air diffuser hood will cause the center of gravity of the air diffuser hood to deviate toward the other side of the rotation axis of the air diffuser hood. When the air diffuser hood rotates, there is a yaw, which will cause periodic shaking. In severe cases, it will cause resonance, increase noise and affect structural strength. The risk of damage to the air diffuser hood is high. Moreover, the eccentric air diffuser port is prone to produce more turbulence when the air is discharged, which affects the stability of the airflow, causes a large loss of kinetic energy of the airflow, and increases noise. Utility Model Content

[0005] The present application provides a hair dryer nozzle to solve the technical problems that the current hair dryer nozzle has an eccentric air outlet, which causes periodic shaking, poor airflow stability and high noise during the rotating air dispersion process.

[0006] The technical solution adopted in this application is:

[0007] A nozzle for a hair dryer comprises an outer nozzle and an inner nozzle, the inner nozzle being rotatably arranged in the outer nozzle, an air duct being arranged through the inner nozzle, the air outlet of the air duct being eccentrically arranged relative to the rotation axis of the inner nozzle, the air duct being connected to the blowing port of the hair dryer, the air outlet of the blowing port driving the inner nozzle to rotate, a counterweight structure being arranged on the outer wall of the inner nozzle, the center of gravity of the counterweight structure and the inner nozzle being respectively located on both sides of the rotation axis of the inner nozzle, so that the center of gravity of the whole consisting of the inner nozzle and the counterweight structure is located on the rotation axis of the inner nozzle.

[0008] The air nozzle for a hair dryer provided by this application further includes the following additional technical features:

[0009] The weight structure includes a plurality of arc-shaped weight ribs spaced radially along the inner air nozzle, and the arc-shaped weight ribs are configured as arc structures extending around the rotation axis;

[0010] Alternatively, the weight structure includes a plurality of straight weight ribs extending radially along the inner air nozzle, and the plurality of straight weight ribs are radially distributed;

[0011] Alternatively, the weight structure includes a plurality of weight bumps, and the weight bumps are distributed on at least one arc extending around the rotation axis.

[0012] The air duct includes a driving section and a wind guiding section. The wind guiding section is connected to the driving section and extends along the flowing direction of the air flow in the air duct to the air outlet. Along the flowing direction of the air flow in the air duct, an arc-shaped air duct with a gradually decreasing flow area is formed in the wind guiding section.

[0013] Along the flowing direction of the air flow in the air duct, the air outlet is inclined towards the rotation axis of the inner air nozzle.

[0014] The air outlet is located inside the outer air nozzle. Along the flowing direction of the air flow in the air duct, the inner diameter of the outer air nozzle gradually decreases from the air outlet to the air discharge port of the outer air nozzle.

[0015] The outer air nozzle is provided with two air discharge ports symmetric about the central axis of the outer air nozzle, and during the rotation of the inner air nozzle, the air outlet switches between a first position facing one of the air discharge ports and a second position facing the other air discharge port.

[0016] The inner diameter of the air discharge port is smaller than the inner diameter of the air outlet.

[0017] The air nozzle further includes a bracket. The inner air nozzle is rotatably connected to the bracket. The outer air nozzle is sleeved outside the bracket and the inner air nozzle. A plurality of clamping ribs are provided on the inner side wall of the outer air nozzle along the circumferential direction. The bracket is provided with clamping grooves corresponding to the clamping ribs. When the outer air nozzle and the bracket rotate relative to each other in one direction, the clamping ribs are clamped with the clamping grooves to achieve locking, and when the outer air nozzle and the bracket rotate relative to each other in the other direction, the clamping ribs are disengaged from the clamping grooves to achieve unlocking.

[0018] Due to the adoption of the above technical solutions, the technical effects achieved by this application at least include:

[0019] 1. The nozzle for a hair dryer provided by this application has an inner nozzle rotatably arranged inside an outer nozzle. The air outlet of the air duct of the inner nozzle is eccentrically arranged relative to the rotation axis of the inner nozzle, forming an eccentric air outlet. The air outlet rotates synchronously with the inner nozzle, so that the airflow of the hair dryer can be blown out from different positions. In addition, a weight structure is provided on the outer wall of the inner nozzle. The weight structure and the center of gravity of the inner nozzle are located on both sides of the rotation axis of the inner nozzle, so that the center of gravity of the whole formed by the inner nozzle and the weight structure is located on the rotation axis of the inner nozzle, making the inner nozzle and the configuration structure as close as possible to the dynamic balance state during rotation, avoiding large swings and obvious vibrations, thus avoiding periodic jitters, which is beneficial to improving the rotation stability of the inner nozzle, enhancing the user experience, reducing noise, reducing the wear between the inner nozzle and the components supporting the rotation of the inner nozzle, and reducing the risk of damage to the structural parts caused by resonance.

[0020] 2. As a preferred embodiment of this application, the weight structure includes a plurality of arc-shaped weight ribs distributed at intervals along the radial direction of the inner nozzle. The arc-shaped weight ribs are configured as arc structures extending around the rotation axis, so that the center of the arc-shaped weight ribs coincides with the rotation axis of the inner nozzle. When the inner nozzle and the weight structure rotate together, the windward area of the arc-shaped weight ribs is small, the wind resistance received is small, and the loss of the rotational kinetic energy of the inner nozzle is small, enabling the inner nozzle to rotate stably and quickly under the action of the hair dryer blowing.

[0021] 3. As a preferred embodiment of this application, the weight structure includes a plurality of straight weight ribs extending along the radial direction of the inner nozzle. The plurality of straight weight ribs are radially distributed, making the overall structure of the weight structure simple and easy to mold and demold.

[0022] 4. As a preferred embodiment of this application, the weight structure includes a plurality of weight bumps. The weight bumps are distributed on at least one arc extending around the rotation axis. The structure is simple, the layout freedom of the weight bumps is relatively large, the degree of restriction by the structure of the inner nozzle is low, and it is relatively easy to adjust the quantity and setting position according to the requirements of dynamic balance and structure.

[0023] 5. As a preferred embodiment of this application, along the flow direction of the airflow in the air duct, an arc-shaped air duct with a gradually decreasing flow area is formed in the air guiding section of the air duct. The arc-shaped air duct has the function of guiding and gathering the airflow entering the inner nozzle towards the air outlet, reducing the diffusion of the airflow, increasing the flow velocity of the airflow when it is discharged from the air outlet, and stabilizing the air pattern.

[0024] 6. As a preferred embodiment of this application, along the flow direction of the airflow in the air duct, the air outlet is inclined towards the rotation axis of the inner nozzle, which can guide the wall-attached airflow, reduce the influence generated by the collision between the wall-attached airflow and the central airflow, is beneficial to enhancing the consistency and stability of the airflow at the air outlet, reducing the kinetic energy loss, and can also reduce the airflow noise to a certain extent.

[0025] 7. As a preferred embodiment of the present application, the air outlet is located inside the outer nozzle. Along the flow direction of the air flow in the air duct, the inner diameter of the outer nozzle gradually decreases from the air outlet to the air discharge port of the outer nozzle, so that in the flow path of the air flow from the air outlet of the air duct to the air discharge port of the outer nozzle, under the guiding and converging action of the outer nozzle, the air flow diffusion is reduced, and the air flow spirally advances within a certain range, which is beneficial to improving the central air volume and the air outlet distance, and can bring a stronger air feeling to the user. In addition, under the condition of ensuring the air output, the user can find a suitable temperature by adjusting the distance between the nozzle and the hair.

[0026] 8. As a preferred embodiment of the present application, the outer nozzle is provided with two air discharge ports that are symmetric about the central axis of the outer nozzle. During the rotation of the inner nozzle, the eccentric air outlet switches between a first position facing one of the air discharge ports and a second position facing the other air discharge port, so that the two air discharge ports of the outer nozzle alternately discharge air, forming an intermittent spiral air discharge, presenting an effect of gently patting the hair and providing a significantly different air discharge form. Description of the Drawings

[0027] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0028] Figure 1 is an exploded view of the nozzle for a hair dryer provided by an embodiment of the present application;

[0029] Figure 2 is a schematic structural diagram of the nozzle installed on the body of the hair dryer provided by an embodiment of the present application;

[0030] Figure 3 is a cross-section of the nozzle for a hair dryer provided by an embodiment of the present application Figure 1 ;

[0031] Figure 4 is a cross-section of the inner nozzle provided by an embodiment of the present application Figure 1 ;

[0032] Figure 5 is a schematic structural diagram of the inner nozzle provided by an embodiment of the present application Figure 1 ;

[0033] Figure 6 is a schematic structural diagram of the inner nozzle provided by an embodiment of the present application Figure 2 ;

[0034] Figure 7 is a schematic structural diagram of the inner nozzle provided by an embodiment of the present application Figure 3 ;

[0035] Figure 8 The sectional view of the inner air nozzle provided by the embodiment of the present application Figure 2 ;

[0036] Figure 9 The assembly drawing of the air nozzle for a hair dryer provided by the embodiment of the present application;

[0037] Figure 10 The structural schematic diagram of the outer air nozzle provided by the embodiment of the present application Figure 1 ;

[0038] Figure 11 The sectional view of the air nozzle for a hair dryer provided by the embodiment of the present application Figure 2 ;

[0039] Figure 12 The sectional view of the air nozzle for a hair dryer provided by the embodiment of the present application Figure 3 ;

[0040] Figure 13 The structural schematic diagram of the bracket provided by the embodiment of the present application;

[0041] Figure 14 The structural schematic diagram of the outer air nozzle provided by the embodiment of the present application Figure 2 。

[0042] List of components and reference numerals:

[0043] 1. Outer air nozzle, 11. Air outlet, 12. Rib;

[0044] 2. Inner air nozzle, 21. Air duct, 211. Driving section, 212. Air guiding section, 22. Air outlet, 23. Arc-shaped counterweight rib, 24. Straight counterweight rib, 25. Counterweight bump, 26. Central axis hole, 27. Blade;

[0045] 3. Body;

[0046] 4. Bracket, 41. Card slot;

[0047] 5. Metal shaft. Detailed implementation manners

[0048] In order to more clearly explain the overall concept of the present application, the following will be described in detail by way of examples in combination with the drawings in the specification.

[0049] In the following description, many specific details are set forth in order to fully understand the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0050] In addition, in the description of the present application, it should be understood that the orientation or positional relationships indicated by terms such as "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "transverse", "longitudinal", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0051] In the present application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0052] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0053] In the embodiments of the present application, a nozzle for a hair dryer is provided. For the convenience of description and understanding, the following content provided in the present application is all elaborated based on the illustrated product structure. Of course, those skilled in the art can understand that the above structure is only a specific example and schematic description, and does not constitute a specific limitation to the technical solutions provided in the present application.

[0054] As Figures 1 to 14 shown, a nozzle for a hair dryer provided in the present application includes an outer nozzle 1 and an inner nozzle 2. The inner nozzle 2 is rotatably arranged inside the outer nozzle 1. A wind channel 21 runs through the inner nozzle 2, and the air outlet 22 of the wind channel 21 is eccentrically arranged relative to the rotation axis of the inner nozzle 2. Figure 4 The rotation axis of the inner nozzle 2 is schematically represented by a dashed line X. The wind channel 21 is in communication with the air outlet of the hair dryer. The air blown out from the air outlet drives the inner nozzle 2 to rotate. A weight structure is provided on the outer wall of the inner nozzle 2. The weight structure and the center of gravity of the inner nozzle 2 are respectively located on both sides of the rotation axis of the inner nozzle 2, so that the center of gravity of the whole formed by the inner nozzle 2 and the weight structure is located on the rotation axis of the inner nozzle 2.

[0055] The nozzle for a hair dryer provided by this application Figure 2 The state when the nozzle is installed on the body 3 of the hair dryer is shown. When the air outlet of the body 3 blows air, it drives the inner nozzle 2 to rotate inside the outer nozzle 1, and finally the air flow is discharged through the outer nozzle 1. The air outlet 22 of the air duct 21 of the inner nozzle 2 is eccentrically arranged relative to the rotation axis of the inner nozzle 2, forming an eccentric air outlet 22. The air outlet 22 rotates synchronously with the inner nozzle 2, so that the air flow of the hair dryer can be blown out from different positions. Due to the existence of the eccentric air outlet 22, the center of gravity of the inner nozzle 2 deviates from the rotation axis and is located on both sides of the rotation axis with the air outlet 22 respectively. Therefore, by providing a weight structure on the outer wall of the inner nozzle 2, the weight structure and the center of gravity of the inner nozzle 2 are located on both sides of the rotation axis of the inner nozzle 2 respectively, so that the center of gravity of the whole formed by the inner nozzle 2 and the weight structure is located on the rotation axis of the inner nozzle 2, making the inner nozzle 2 and the configuration structure as close as possible to the dynamic balance state during rotation, avoiding large swings and obvious vibrations, thus avoiding periodic jitters, being beneficial to improving the rotation stability of the inner nozzle 2, improving the user experience, reducing noise, reducing the wear between the inner nozzle 2 and the components supporting the rotation of the inner nozzle 2, and reducing the risk of damage to the structural parts caused by resonance. Specifically, in order to make the center of gravity of the whole formed by the inner nozzle 2 and the weight structure be located on the rotation axis of the inner nozzle 2, the weight structure should be provided on the side where the air outlet 22 deviates from the rotation axis, and the weight structure and the air outlet 22 are arranged on the same side.

[0056] Regarding the way in which the inner nozzle 2 can rotate driven by the air flow at the air outlet, in a preferred embodiment, as Figure 4 and Figure 5 shown, a central shaft hole 26 and blades 27 surrounding the central shaft hole 26 can be provided in the inner nozzle 2. The position where the central shaft hole 26 is located constitutes the rotation axis of the inner nozzle 2. The air blown out from the air outlet of the body 3 of the hair dryer acts on the blades 27 to drive the inner nozzle 2 to rotate through the rotation of the blades 27.

[0057] It should be noted that regarding the specific form of the weight structure, this application does not make any limitations, and it includes but is not limited to the following embodiments:

[0058] Embodiment 1: As Figure 5 shown, the weight structure includes a plurality of arc-shaped weight ribs 23 distributed at intervals along the radial direction of the inner nozzle 2. The arc-shaped weight ribs 23 are configured as arc structures extending around the rotation axis, so that the center of the arc-shaped weight ribs 23 coincides with the rotation axis of the inner nozzle 2. When the inner nozzle 2 and the weight structure rotate together, the windward area of the arc-shaped weight ribs 23 is small, the wind resistance received is small, and the rotational kinetic energy loss of the inner nozzle 2 is small, enabling the inner nozzle 2 to rotate stably and quickly under the action of the hair dryer blowing air. Figure 5Figure 2 schematically shows that there are two rows of arc-shaped counterweight ribs 23 with different arc lengths on the outer side of the inner air nozzle 2. Of course, during actual production, the number and arc length of the arc-shaped counterweight ribs 23 can be adjusted according to requirements to meet the requirement that the center of gravity of the overall structure composed of the inner air nozzle 2 and the counterweight structure is located on the rotation axis of the inner air nozzle 2.

[0059] Embodiment 2: As Figure 6 shown, the counterweight structure includes a plurality of straight counterweight ribs 24 extending radially along the inner air nozzle 2, and the plurality of straight counterweight ribs 24 are radially distributed. For this form of counterweight structure, the overall structure is simple and it is easy to mold and demold. During actual production, the number and length of the straight counterweight ribs 24 can also be adjusted according to requirements to meet the requirement that the center of gravity of the overall structure composed of the inner air nozzle 2 and the counterweight structure is located on the rotation axis of the inner air nozzle 2.

[0060] Embodiment 3: As Figure 7 shown, the counterweight structure includes a plurality of counterweight bumps 25, and the counterweight bumps 25 are distributed on at least one arc extending around the rotation axis. In this embodiment, the structure is simple, the layout freedom of the counterweight bumps 25 is relatively large, and the degree of restriction by the structure of the inner air nozzle 2 is low. It is relatively easy to adjust the number and setting position according to the dynamic balance and structural requirements. During actual production, the number of the counterweight bumps 25 can also be adjusted according to requirements to meet the requirement that the center of gravity of the overall structure composed of the inner air nozzle 2 and the counterweight structure is located on the rotation axis of the inner air nozzle 2.

[0061] Regarding the structure of the air duct 21, as a preferred embodiment, as Figure 4 shown, the air duct 21 includes a driving section 211 and a wind guiding section 212. The wind guiding section 212 is connected to the driving section 211 and extends along the flowing direction of the air flow in the air duct 21 to the air outlet 22. Along the flowing direction of the air flow in the air duct 21, an arc-shaped air duct with a gradually decreasing flow area is formed in the wind guiding section 212. Specifically, in the embodiment where the blade 27 is disposed in the inner air nozzle 2 as described above, the blade 27 can be integrally disposed in the driving section 211. The driving section 211 has a relatively wide ventilation space, which helps to increase the wind receiving area of the blade 27, so that the air flow of the hair dryer can fully act on the blade 27, effectively driving the rotation of the inner air nozzle 2. When the air flow is scattered by the blade 27 in the driving section 211 and further flows toward the air outlet 22, the arc-shaped air duct guides and gathers the air flow toward the air outlet 22, reduces the air flow diffusion, increases the flow velocity of the air flow when it is discharged from the air outlet 22, and stabilizes the wind type.

[0062] In a preferred embodiment, as Figure 4As shown, the angle between the air guiding section 212 and the rotation axis of the inner air nozzle 2 is θ. The smaller θ is, the smaller the air flow resistance is, but the longer the axial length of the inner air nozzle 2 is, and the worse the hand-held experience is. The larger θ is, the shorter the axial length of the inner air nozzle 2 is, but the greater the air flow resistance is. Therefore, an appropriate value of θ can achieve a balance between the axial length of the inner air nozzle 2 and the air flow resistance. θ is preferably 40 - 50°, which is beneficial to increasing the air volume as much as possible within the range of the axial length limit of the inner air nozzle 2, reducing the risk of high temperature of the air nozzle, and avoiding excessive motor load.

[0063] Since the driving section 211 of the air duct 21 is the position with the largest diameter of the inner air nozzle 2, therefore, in another preferred embodiment, as Figure 3 and Figure 4 shown, the distance between the driving section 211 and the inner wall of the outer air nozzle 1 can be set as g, where 0.5mm ≤ g ≤ 2mm. Through this setting, the distance between the inner air nozzle 2 and the outer air nozzle 1 is reasonably controlled, and the inner wall of the outer air nozzle 1 radially constrains the inner air nozzle 2. Even if the inner air nozzle 2 still has a slight radial jitter due to installation error or processing error, due to the radial constraint effect of the outer air nozzle 1 on the driving section 211, the jitter amplitude of the inner air nozzle 2 is controlled within an extremely small range, improving the rotational stability of the inner air nozzle 2 and reducing jitter.

[0064] As a preferred implementation manner, as Figure 4 shown, along the direction of the air flow in the air duct 21, the air outlet 22 is inclined towards the rotation axis of the inner air nozzle 2. In the figure, the central axis of the air outlet 22 is schematically represented by a dotted line Y. The air outlet 22 is inclined towards the rotation axis of the inner air nozzle 2, so that the central axis of the air outlet 22 is parallel to the rotation axis of the inner air nozzle 2, enabling the inner wall of the air outlet 22 to guide the wall-attached air flow, reducing the influence caused by the collision between the wall-attached air flow and the central air flow, being beneficial to improving the consistency and stability of the air flow at the air outlet 22, reducing kinetic energy loss, and also reducing the air flow noise to a certain extent. In this embodiment, the outer edge of the air outlet 22 can be designed in the form as Figure 4 shown, with an acute angle arrangement with the rotation axis of the inner air nozzle 2, or can also be designed in the form as Figure 8 shown, with a right angle arrangement with the rotation axis of the inner air nozzle 2, this form enables the air flow at the air outlet 22 to have better air flow consistency and stability.

[0065] As a preferred implementation manner, as Figure 3As shown in the figure, the air outlet 22 is located inside the outer air nozzle 1. Along the flowing direction of the air current in the air duct 21, the inner diameter of the outer air nozzle 1 gradually decreases from the air outlet 22 to the air discharge port 11 of the outer air nozzle 1. So that in the flowing path of the air current from the air outlet 22 of the air duct 21 to the air discharge port 11 of the outer air nozzle 1, under the guiding and converging action of the outer air nozzle 1, the diffusion of the air current is reduced, and the air current spirally advances within a certain range, which is beneficial to improving the central air volume and the air outlet distance, and can bring a stronger air feeling to the user. In addition, under the condition of ensuring the air output, the user can find a suitable temperature by adjusting the distance between the air nozzle and the hair.

[0066] Regarding the structure of the outer air nozzle 1, the present application does not make any limitation, and any one of the following embodiments can be selected:

[0067] Embodiment 4: As Figures 1 to 3 shown, the outer air nozzle 1 is provided with an air discharge port 11, and the inner diameter of the air discharge port 11 is larger than the inner diameter of the air outlet 22 of the air duct 21. When the inner air nozzle 2 rotates, the air outlet 22 can be in a state of being directly opposite to the air discharge port 11 at any rotation position, so that the air current discharged from the air duct 21 can be smoothly guided by the outer air nozzle 1 to the air discharge port 11 for discharge, reducing the wind resistance and optimizing the air type.

[0068] Embodiment 5: As Figures 9 to 12 shown, the outer air nozzle 1 is provided with two air discharge ports 11 that are symmetric about the central axis of the outer air nozzle 1. Figure 11 In the figure, the central axis of the outer air nozzle 1 is schematically represented by a dotted line Z. During the rotation of the inner air nozzle 2, the eccentric air outlet 22 switches between a first position directly opposite to one of the air discharge ports 11 and a second position directly opposite to the other air discharge port 11. In this embodiment, during the rotation and air outlet process of the inner air nozzle 2, due to the switching of the eccentric air outlet 22 between the first position and the second position, the two air discharge ports 11 of the outer air nozzle 1 discharge air alternately. Figure 11 and Figure 12 In the figure, the flowing direction of the air current is schematically represented by a dotted arrow, forming an intermittent spiral air outlet, presenting an effect of gently patting the hair, and providing a significantly different air outlet form. Further, the inner diameter of the air discharge port 11 is smaller than the inner diameter of the air outlet 22, so that the air outlet area of the air outlet 22 is larger than the air outlet area of the air discharge port 11. The air current discharged from the air outlet 22 further converges towards the center at the air discharge port 11, the wind pressure increases, and the flow rate increases, which helps to improve the perception degree of the intermittent air outlet and enhance the air current patting effect.

[0069] As a preferred embodiment, as Figure 1 、 Figure 3 、 Figure 11 、 Figure 13 and Figure 14As shown, the air nozzle further includes a bracket 4. The inner air nozzle 2 is rotatably connected to the bracket 4. The outer air nozzle 1 is sleeved outside the bracket 4 and the inner air nozzle 2. A plurality of locking ribs 12 are provided along the circumferential direction on the inner side wall of the outer air nozzle 1. The bracket 4 is provided with a card slot 41 corresponding to the locking rib 12. When the outer air nozzle 1 and the bracket 4 rotate relative to each other in one direction, the locking rib 12 is engaged with the card slot 41 to achieve locking. When the outer air nozzle 1 and the bracket 4 rotate relative to each other in the other direction, the locking rib 12 is disengaged from the card slot 41 to achieve unlocking. Specifically, in the embodiment where the central axis hole 26 and the blades 27 surrounding the central axis hole 26 are provided in the inner air nozzle 2, the inner air nozzle 2 and the bracket 4 can be rotatably connected through a metal shaft 5. The metal shaft 5 passes through the central axis hole 26 and is fixedly inserted into the bracket 4. The inner air nozzle 2 rotates around the metal shaft 5 under the action of the air flow of the hair dryer. The outer air nozzle 1 and the bracket 4 are rotationally clamped through the locking rib 12 and the card slot 41, so that the outer air nozzle 1 can be quickly disassembled and assembled on the bracket 4, which is convenient for cleaning and maintaining the internal parts such as the inner air nozzle 2.

[0070] What is not described in this application can be realized by adopting or referring to the existing technology.

[0071] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0072] The above are only the embodiments of this application and are not used to limit this application. For those skilled in the art, various changes and modifications can be made to this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims

1. A nozzle for a hair dryer, comprising an outer nozzle and an inner nozzle. The inner nozzle is rotatably disposed within the outer nozzle. A wind channel is provided through the inner nozzle. The air outlet of the wind channel is eccentrically disposed relative to the rotation axis of the inner nozzle. The wind channel is in communication with the air outlet of the hair dryer, and the air blown out from the air outlet drives the inner nozzle to rotate. It is characterized in that, The outer wall of the inner air nozzle is provided with a weight structure, and the weight structure and the center of gravity of the inner air nozzle are respectively located on both sides of the rotation axis of the inner air nozzle, so that the center of gravity of the whole formed by the inner air nozzle and the weight structure is located on the rotation axis of the inner air nozzle.

2. The air nozzle according to claim 1, wherein the weight structure includes a plurality of arc-shaped weight ribs distributed at intervals in the radial direction of the inner air nozzle, and the arc-shaped weight ribs are configured as arc structures extending around the rotation axis.

3. The air nozzle according to claim 1, wherein the weight structure includes a plurality of straight weight ribs extending in the radial direction of the inner air nozzle, and the plurality of straight weight ribs are radially distributed.

4. The air nozzle according to claim 1, wherein the weight structure includes a plurality of weight bumps, and the weight bumps are distributed on at least one arc extending around the rotation axis.

5. The air nozzle according to claim 1, wherein the air duct includes a driving section and a wind guiding section, the wind guiding section is connected to the driving section and extends along the flowing direction of the air flow in the air duct to the air outlet, and in the flowing direction of the air flow in the air duct, an arc-shaped air duct with a gradually decreasing flow area is formed in the wind guiding section.

6. The air nozzle according to claim 1, wherein along the flowing direction of the air flow in the air duct, the air outlet is inclined towards the rotation axis of the inner air nozzle.

7. The air nozzle according to claim 1, wherein the air outlet is located inside the outer air nozzle, and along the flowing direction of the air flow in the air duct, the inner diameter of the outer air nozzle gradually decreases from the air outlet to the air discharge port of the outer air nozzle.

8. The air nozzle according to claim 1, wherein the outer air nozzle is provided with two air discharge ports symmetrical about the central axis of the outer air nozzle, and during the rotation of the inner air nozzle, the air outlet switches between a first position facing one of the air discharge ports and a second position facing the other air discharge port.

9. The air nozzle according to claim 8, wherein the inner diameter of the air discharge port is smaller than the inner diameter of the air outlet.

10. The air nozzle according to claim 1, wherein it further includes a bracket, the inner air nozzle is rotatably connected to the bracket, the outer air nozzle is sleeved outside the bracket and the inner air nozzle, a plurality of clamping ribs are provided on the inner side wall of the outer air nozzle in the circumferential direction, the bracket is provided with clamping grooves corresponding to the clamping ribs, relative rotation of the outer air nozzle and the bracket in one direction makes the clamping ribs engage with the clamping grooves to achieve locking, and relative rotation of the outer air nozzle and the bracket in the other direction makes the clamping ribs disengage from the clamping grooves to achieve unlocking.

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