A nozzle for a hairdryer

Abstract

The utility model belongs to the technical field of electric appliance fittings, disclose a kind of air nozzle of hair dryer, including inner shell, shell, the air outlet of shell is equipped with the air outlet of flat, inner shell includes the base of setting air inlet and the flow guide portion of setting in base, shell is sleeved in the outer periphery of flow guide portion and is fixedly connected with base, flow guide portion is protruding from base to air outlet and gradually contracts outer diameter;The outer periphery wall of flow guide portion is protruded with the first shunt plate coaxial with flow guide portion and the recessed setting of sunken groove, the inner wall of shell is protruded with second shunt plate, second shunt plate extends to air outlet relative flow guide portion, second shunt plate is inserted into sunken groove and with the end face of first shunt plate butt joint to form complete partition plate, partition plate separates air outlet passage.This application improves the uniformity of air outlet, so that user blow hair can reach uniform styling effect, the cooperation of second shunt plate and sunken groove realizes the multidirectional positioning of inner shell and shell, realizes the stability of air nozzle connection.

Description

Technical Field

[0001] This utility model belongs to the field of electrical appliance accessories technology, specifically relating to a nozzle for a hair dryer. Background Technology

[0002] Patent CN221129112U discloses a nozzle structure and a hair dryer, including an inner nozzle and an outer nozzle. The inner sidewall of the outer nozzle has a guide portion, and the outer sidewall of the inner nozzle has a matching portion. When the outer nozzle is fitted onto the outer periphery of the inner nozzle, the guide portion and the matching portion are positioned relative to each other. Specifically, the guide portion of the outer nozzle is a first plate (vertical plate), and the outer sidewall of the inner nozzle extends outward to form a second plate (horizontal plate) with a notch, which is the matching portion. The first plate and the second plate are positioned by intersecting through the notch. In addition, the inner nozzle serves as an internal support, and its outer sidewall has a stud with internal threads. The outer nozzle has a first mating portion that mates with the stud, and screws are used to fix the inner nozzle and the outer nozzle together.

[0003] In the above solution, since the inner and outer air nozzles are positioned crosswise at the notch by horizontal and vertical plates, after positioning, although the outer and inner air nozzles can be axially restrained and horizontally locked in the notch, the vertical plate of the outer air nozzle can still move up and down or tilt within the notch of the horizontal plate in the vertical direction. This results in positioning deviation between the outer and inner air nozzles, leading to inaccurate positioning. Furthermore, since the inner and outer air nozzles are fixed with studs and screws, if positioning deviation occurs, the threads of the screws and internal threads cannot engage during tightening, causing loosening even after fixing, resulting in a loose and unstable connection between the inner and outer air nozzles.

[0004] In addition, because the inner nozzle has a convex bulge with guide ribs and studs, the airflow in the duct must pass through the guide ribs and studs before being diverted by the horizontal and vertical plates and discharged from the air outlet. Although this solution guides the airflow through the horizontal and vertical plates and can make the airflow more uniform to some extent, some airflow is blocked when it passes through the thick studs. The airflow speed and pressure are weak at the position directly opposite the studs at the air outlet and high at other positions, resulting in uneven hair styling results. For example, when styling the same strand of hair, the hair near the sides of the air outlet with high air pressure is styled, but the hair in the middle of the air outlet with weaker air pressure is not styled. The uneven styling effect affects the overall hairstyle styling effect and also causes local noise due to uneven airflow, amplifying the problem of blow-drying noise. At the same time, due to the obstruction of the studs, the airflow direction in the duct becomes more turbulent, generating vortex noise. Utility Model Content

[0005] This utility model provides a hair dryer nozzle that, while optimizing the uniform airflow of the nozzle to evenly shape the hair strands, solves the technical problems of inaccurate positioning and unstable connection between the inner and outer shells of the nozzle.

[0006] The technical solution adopted in this utility model is as follows:

[0007] This utility model provides a nozzle for a hair dryer, including an inner shell and an outer shell fitted outside the inner shell. The air outlet end of the outer shell has a flat air outlet, forming an air outlet channel between the inner shell and the outer shell. The inner shell includes a base with an air inlet and a guide portion disposed on the base. The outer shell is fitted around the outer periphery of the guide portion and is fixedly connected to the base. The guide portion protrudes from the base toward the air outlet and its outer diameter gradually narrows. A first diverter plate coaxial with the guide portion and a recessed groove are protruding on the outer peripheral wall of the guide portion. The first diverter plate is closer to the air inlet than the groove and abuts against the inner wall of the outer shell. A second diverter plate protrudes from the inner wall of the outer shell. The second diverter plate extends toward the air outlet relative to the guide portion and is inserted into the groove, forming a complete partition plate with the end face of the first diverter plate. The partition plate divides the air outlet channel.

[0008] This utility model provides a nozzle for a hair dryer. The inner shell includes a base with an air inlet and a guide portion disposed on the base. The outer shell is sleeved around the outer periphery of the guide portion and fixedly connected to the base. The outer shell and the inner shell are fixed by the base, eliminating the need for a fixing position on the guide portion. This avoids airflow obstruction and uneven airflow caused by protruding stud-like fixing positions on the guide portion, which helps to increase wind speed and improve shaping efficiency; it also improves airflow uniformity to enhance the shaping effect and reduce noise. Since the first diverter plate is coaxial with the guide portion, and the second diverter plate is inserted into the groove and is aligned with the first diverter plate... The end faces are joined to form a complete partition plate, which allows the airflow entering from the air inlet to flow smoothly towards the air outlet along the outer peripheral wall of the guide section and the surface of the partition plate. The partition plate equally divides the air outlet channel, thereby dividing the airflow flowing towards the air outlet along the outer peripheral wall of the guide section into two streams. Therefore, after the airflow is guided by the guide section, it moves towards the partition plate and is discharged towards the air outlet along the partition plate. This avoids the airflow from crossing and converging on both sides of the air outlet along the guide section, thus reducing the accumulation of airflow on both sides of the air outlet and further improving the uniformity of the airflow, enabling users to achieve a uniform styling effect when blow-drying their hair.

[0009] Based on this, since the outer peripheral wall of the guide section is recessed with a groove instead of a notch, and the guide section protrudes from the base towards the air outlet with a gradually narrowing outer diameter, the groove extends obliquely along the guide section. When the second diverter plate is inserted into the groove, the side wall of the groove provides lateral limitation to the second diverter plate, i.e., the first direction limitation. The bottom of the groove supports the second diverter plate, achieving vertical limitation, i.e., the second direction limitation. When the end face of the second diverter plate is in contact with the end face of the first diverter plate, it achieves limitation along the axial direction of the nozzle, i.e., the third direction limitation. Therefore, while the first diverter plate and the second diverter plate are connected to guide the airflow to pass smoothly with low noise, the cooperation between the second diverter plate and the groove achieves multi-directional positioning of the inner shell and the outer shell, achieving precise alignment and coaxial installation of the inner shell and the outer shell. Finally, the two are fixed by fixing the outer shell to the base, achieving stable connection of the nozzle.

[0010] In a preferred embodiment, the housing includes a raised portion and a flat nozzle portion forming an air outlet, the raised portion covering the air guide portion, an arc-shaped transition wall connecting the raised portion and the flat nozzle portion, and the second diverter plate extending toward the air outlet through the arc-shaped transition wall to the flat nozzle portion.

[0011] By setting a raised portion to cover the guide portion, the raised portion and the guide portion together gather the airflow and flow it forward. Then, the airflow is buffered by the arc-shaped transition wall, gathers and accelerates from the flat nozzle, and is then discharged. The arc-shaped transition wall can form a gentle transition between the raised portion and the flat nozzle, avoiding abrupt changes in the direction and speed of the airflow at the flat nozzle, which would cause uneven wind speed and wind noise. Moreover, since the second diverter plate extends towards the air outlet through the arc-shaped transition wall to the flat nozzle, it lengthens the guidance of the airflow and avoids the airflow from converging on both sides of the flat nozzle, which would cause the local airflow to be large and fast, creating a large difference from the center of the flat nozzle. This improves the uniformity of the air outlet and achieves the uniformity of the shape.

[0012] In a preferred embodiment, the air inlet end of the raised portion is folded outward to form a flange for fixing to the base, and the flat nozzle portion has air-expanding sidewalls located on both sides of the raised portion. The air-expanding sidewalls extend outward at an angle along the air outlet direction, and the air inlet end of the air-expanding sidewalls is connected to the flange through an annular transition wall.

[0013] In some existing air nozzles, the side wall of the outer casing and the air inlet are connected by a transition protrusion, which is formed by a concave shape from the outside to the inside. This protrusion obstructs the airflow during operation, causing turbulent noise at the protrusion on the inner side of the casing, resulting in a whistling noise that causes discomfort to the user. Therefore, this application addresses this issue by connecting the air inlet of the expanded side wall to the flange via an annular transition wall. Airflow entering from the air inlet is smoothly guided to the expanded side wall via the annular transition wall and then continues to flow towards the air outlet without obstruction. This avoids turbulent noise at the annular transition wall, thereby improving the user experience.

[0014] In a preferred embodiment, the air outlet channel includes an annular channel located between the raised portion and the guide portion, the annular channel first narrowing and then widening towards the air outlet.

[0015] The annular channel narrows towards the air outlet, reducing the ventilation area and increasing airflow speed, thus achieving rapid airflow and improving hair drying efficiency. The annular channel then widens towards the air outlet, increasing the airflow area to match the outlet and optimizing airflow characteristics. While maintaining airflow speed, the enlarged annular channel reduces airflow loss, maintains air volume, and ensures sufficient air pressure at the outlet, facilitating hair styling.

[0016] In a preferred embodiment, the outer casing includes a raised portion fitted around the outer periphery of the air guide portion and a flat nozzle portion forming an air outlet. The flat nozzle portion extends to both sides of the raised portion. The flat nozzle portion includes an outwardly expanding channel whose width gradually increases along the air outlet direction and an air-gathering channel whose width remains unchanged. The air outlet is located at the front end of the air-gathering channel.

[0017] By setting up an outward expansion channel with gradually increasing width and a concentrating channel with a constant width, the guide section directs the airflow towards the center, while the sidewalls of the outward expansion channel direct the airflow to both sides, thus homogenizing the airflow in the center and on both sides. The airflow then passes through the concentrating channel and is discharged vertically from the air outlet. The concentrating channel prevents excessive airflow from converging along the inclined and expanding outward expansion channel to both sides of the air outlet, thereby achieving uniform airflow, reducing noise caused by high local airflow velocity, and achieving uniform hair styling.

[0018] In a preferred embodiment, the outward expansion channel extends in the direction of airflow to the front of the guide section, and the second diverter extends into the air-gathering channel.

[0019] By extending the outward expansion channel along the air outlet direction to the front of the guide section, the combination of the sidewall of the outward expansion channel, the guide section, and the raised section provides multiple guidance, enabling the airflow to flow quickly and smoothly to the air outlet, thereby improving drying efficiency. The second diverter extends into the air gathering channel, extending the length of the airflow separation and guidance, further preventing the airflow from crossing and converging on both sides of the air outlet to form local high-speed airflow, and guiding the airflow to be discharged vertically from the air outlet, thereby improving the uniform airflow effect at the air outlet.

[0020] In a preferred embodiment, the second diverter plate is recessed at one end toward the guide portion to form a mating groove, the bottom wall of the mating groove abuts against the front end of the guide portion, and the side wall of the mating groove is inserted into the settling groove.

[0021] By recessing a groove at one end of the second diverter plate towards the guide section, a second insertion fit is formed. The groove sidewall is inserted into the sink, and the bottom wall of the groove abuts against the front end of the guide section. This further improves the positioning accuracy and connection stability of the outer and inner shells, enhances the coaxiality of the outer and inner shells, ensures uniform airflow from the outlet channel, and reduces the fit tolerance of the outer and inner shells to minimize gaps and prevent airflow loss due to leakage and cross-flow, thus ensuring the effective airflow from the outlet.

[0022] In a preferred embodiment, the front end face of the flow guide is provided with an annular extension rib, the extension rib is provided with a notch communicating with the settling groove, the side wall of the mating groove is limited to the notch, and the bottom wall of the mating groove abuts against the front end face of the flow guide.

[0023] By setting an extension rib at the front end of the flow guide, the sink achieves the first limiting effect on the side wall of the mating groove, and the notch of the extension rib forms the second limiting effect on the side wall of the mating groove. This achieves a precise and stable connection between the flow guide and the second diverter plate, and enables precise positioning of the inner shell and the outer shell, thereby ensuring the rapid and reliable fixing of the inner shell and the outer shell.

[0024] In a preferred embodiment, the second diverter plate includes a cylinder coaxially protruding from the front end of the guide section and a plate body connected to the upper and lower sides of the cylinder.

[0025] By setting the second diverter plate as a cylindrical and plate structure, since the cylinder is coaxially protruding at the front end of the guide section, it will not obstruct the airflow passing through the guide section and will not affect the smooth flow of airflow. At the same time, the cylindrical part is used to strengthen the second diverter plate, and during the injection molding of the shell, the cylinder corresponds to the injection port position, which does not require careful design, thus simplifying the processing technology.

[0026] In a preferred embodiment, the base is ultrasonically welded to the outer shell or secured by snap-fit.

[0027] Using ultrasonic welding or snap-fit ​​fastening methods eliminates the need for additional fastening parts and adhesives, simplifying the nozzle structure and preventing the fastening location from being exposed to the user, thus improving the nozzle's aesthetics. Ultrasonic welding achieves high-strength and permanent connections, reinforcing the connection between the outer and inner shells. Snap-fit ​​fastening offers flexible and convenient operation, enabling rapid assembly while maintaining low cost.

[0028] In a preferred embodiment, the housing includes a raised portion fitted around the outer periphery of the air guide portion and a flat nozzle portion forming an air outlet. The flat nozzle portion includes a top wall, a bottom wall, and an air-expanding side wall connecting the top wall and the bottom wall. Both the top wall and the bottom wall protrude outward from the air-expanding side wall to form a grip portion.

[0029] Since the nozzle may become hot after use due to the hot air, a grip is formed by the top and bottom walls protruding outwards from the diffuser sidewall. This facilitates the user's installation and removal of the nozzle, while also preventing burns during disassembly, making operation convenient and worry-free. Moreover, the grip is formed by the top and bottom walls of the flat nozzle, eliminating the need for additional structural design, simplifying the nozzle structure, and resulting in a lightweight design.

[0030] In a preferred embodiment, the base is an annular base surrounding the air inlet end of the guide section, the air inlet is an annular air inlet formed between the guide section and the base, and the first diverter plate extends into the air inlet and connects the guide section to the base;

[0031] The base adopts a ring-shaped design, eliminating the need to consider the installation angle when installing it with the blower body, enabling multi-angle installation, saving the trouble of alignment, and making operation convenient. The ring-shaped base also corresponds to the shape of the air guide. The first air divider extends into the air inlet and connects the air guide to the base. The airflow entering from the air inlet is directly guided forward by the first divider. At the same time, the first divider also serves as a connection between the air guide and the base. The nozzle structure is simple, compact, and lightweight.

[0032] In a preferred embodiment, the first and second diverter plates are perpendicular to the extending direction of the air outlet.

[0033] Because flat air outlets exhibit more pronounced uneven airflow along their extension direction (i.e., faster airflow on both sides and slower airflow in the middle), the first and second diverter plates are perpendicular to the extension direction of the air outlet. This separates the airflow in the air outlet channel along the extension direction, creating two evenly distributed airflows for a more effective and uniform airflow effect. Attached Figure Description

[0034] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0035] Figure 1 This is a schematic diagram of the exploded structure of the air nozzle in one embodiment of the present invention;

[0036] Figure 2 This is a longitudinal cross-sectional view of the nozzle in one embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the outer shell in one embodiment of the present invention;

[0038] Figure 4 This is a cross-sectional schematic diagram of the nozzle in one embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the inner shell in one embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of the internal structure of the outer shell in one embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of the structure of a hair dryer in one embodiment of the present invention.

[0042] List of components and reference numerals:

[0043] 10. Inner shell; 11. Base; 12. Air inlet; 13. Guide section; 131. Sump; 132. Notch; 133. Extension rib; 20. Outer shell; 21. Air outlet; 22. Raised section; 221. Flanged edge; 23. Flat nozzle; 231. Air expansion side wall; 232. Annular transition wall; 233. Outward expansion channel; 234. Air gathering channel; 24. Arc-shaped transition wall; 30. Divider plate; 31. First diverter plate; 32. Second diverter plate; 321. Fitting groove; 322. Cylinder; 323. Plate body; 40. Grip part; 50. Magnet; 60. Detection element; 100. Main body; 200. Handle; 300. Nozzle. Detailed Implementation

[0044] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0045] Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0046] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] like Figure 1-7 As shown, in a preferred embodiment, this utility model provides a hair dryer nozzle, such as... Figure 1As shown, the device includes an inner shell 10 and an outer shell 20 fitted around the outer side of the inner shell 10. The air outlet end of the outer shell 20 is provided with a flat air outlet 21, forming an air outlet channel between the inner shell 10 and the outer shell 20. The inner shell 10 includes a base 11 with an air inlet 12 and a guide portion 13 provided on the base 11. The outer shell 20 is fitted around the outer periphery of the guide portion 13 and is fixedly connected to the base 11. The guide portion 13 protrudes from the base 11 toward the air outlet 21 and its outer diameter gradually narrows. A first diverter plate 31 coaxial with the guide portion 13 and a recessed groove 131 are provided on the outer peripheral wall of the guide portion 13. The first diverter plate 31 is closer to the air inlet 12 than the groove 131 and abuts against the inner wall of the outer shell 20. Figure 2 As shown, the inner wall of the outer casing 20 is provided with a second diverter plate 32. The second diverter plate 32 extends toward the air outlet 21 relative to the guide portion 13. The second diverter plate 32 is inserted into the sink 131 and connects with the end face of the first diverter plate 31 to form a complete partition plate 30. The partition plate 30 divides the air outlet channel.

[0050] This utility model provides a blower nozzle, the inner shell 10 includes a base 11 with an air inlet 12 and a guide portion 13 disposed on the base 11, the outer shell 20 is sleeved on the outer periphery of the guide portion 13 and fixedly connected to the base 11. The outer shell 20 and the inner shell 10 are fixed by the base 11, eliminating the need for a fixing position on the guide portion 13, avoiding airflow obstruction and uneven airflow caused by protruding stud-like fixing positions on the guide portion 13, which is beneficial for increasing wind speed and improving shaping efficiency; improving airflow uniformity to improve shaping effect and reduce noise; due to the first diverter plate 31 and the guide portion 13 Coaxially, the second diverter plate 32 is inserted into the settling tank 131 and forms a complete partition plate 30 with the end face of the first diverter plate 31. The surface of the partition plate 30 is smooth, allowing the airflow entering from the air inlet 12 to flow smoothly along the outer peripheral wall of the guide section 13 and the smooth surface of the partition plate 30 towards the air outlet 21. The partition plate 30 equally divides the air outlet channel, thereby dividing the airflow flowing along the outer peripheral wall of the guide section 13 towards the air outlet 21 into two streams. Therefore, after being guided by the guide section, the airflow approaches the partition plate and is discharged towards the air outlet along the partition plate. The airflow direction is as follows: Figure 4As shown by the dotted arrows, this design prevents airflow from converging along the guide section 13 on both sides of the air outlet 21, thus reducing airflow accumulation on both sides of the air outlet 21 and further improving the uniformity of the airflow, allowing users to achieve a uniform styling effect when blow-drying their hair. Furthermore, because the guide section 13 has a recessed groove 131 instead of a notch 132 on its outer peripheral wall, and the guide section 13 protrudes from the base 11 towards the air outlet 21 with a gradually narrowing outer diameter, the groove 131 extends obliquely along the guide section 13. When the second diverter plate 32 is inserted into the groove 131, the sidewall of the groove 131 provides lateral (first direction) limitation for the second diverter plate 32, while the bottom of the groove 131 supports the second diverter plate 32, achieving vertical (second direction) limitation. The second diverter plate 32 and the first diverter plate 31 are connected end to end to achieve axial positioning along the nozzle, i.e., third-dimensional positioning. Therefore, the first diverter plate 31 and the second diverter plate 32 are smoothly connected to guide the airflow to pass through smoothly with low noise. At the same time, the cooperation between the second diverter plate 32 and the groove 131 achieves multi-directional positioning of the inner shell 10 and the outer shell 20, realizing the precise alignment and coaxial installation of the inner shell 10 and the outer shell 20. Then, the outer shell 20 is fixed to the base 11 to achieve the final fixation of the two and realize the stability of the nozzle connection.

[0051] like Figure 3 , 4 As shown, in a preferred embodiment, the outer casing 20 includes a raised portion 22 and a flat nozzle portion 23 forming an air outlet 21. The raised portion 22 covers the air guide portion 13, and an arc-shaped transition wall 24 connects the raised portion 22 and the flat nozzle portion 23. Figure 2 The second diverter plate 32 extends toward the air outlet 21, passes through the arc-shaped transition wall 24, and reaches the flat nozzle 23. Preferably, as... Figure 4 As shown, the air inlet end of the raised portion 22 is folded outward to form a flange 221 to be fixed to the base 11. The flat mouth portion 23 has an air-expanding sidewall 231 located on both sides of the raised portion 22. The air-expanding sidewall 231 extends outward at an angle along the air outlet direction, and the air inlet end of the air-expanding sidewall 231 is connected to the flange 221 through an annular transition wall 232.

[0052] By setting the raised portion 22 to cover the guide portion 13, the raised portion 22 and the guide portion 13 together gather the airflow and flow it forward. Then, the airflow is buffered by the arc-shaped transition wall 24 and gathers and accelerates from the flat mouth portion 23 before being discharged. The arc-shaped transition wall 24 can form a gentle transition between the raised portion 22 and the flat mouth portion 23, avoiding sudden changes in the direction and speed of the airflow at the flat mouth portion 23, which would cause uneven wind speed and generate wind noise. Moreover, since the second diverter plate 32 extends towards the air outlet 21 through the arc-shaped transition wall 24 to the flat mouth portion 23, it lengthens the guidance of the airflow and avoids the airflow from converging on both sides of the flat mouth portion 23, which would cause the local airflow to be large and fast and form a large difference from the middle of the flat mouth portion 23. This improves the uniform air outlet effect of the air outlet 21 and achieves the uniformity of the shape.

[0053] In some existing air nozzles, the side wall of the outer casing 20 and the air inlet are connected by a transition protrusion formed by a concave shape from the outside to the inside. This protrusion obstructs the airflow during operation, causing turbulent noise at the protrusion on the inner side of the outer casing 20, resulting in a whistling noise that causes discomfort to the user. Therefore, this application connects the air inlet of the diffuser side wall 231 to the flange 221 via an annular transition wall 232. The airflow entering from the air inlet 12 is smoothly guided to the diffuser side wall 231 via the annular transition wall 232, and then continues to flow along the diffuser side wall 231 to the air outlet 21 without obstruction. Turbulent noise is avoided at the annular transition wall 232, thus improving the user experience.

[0054] In another preferred embodiment, the air outlet channel includes an annular channel located between the raised portion 22 and the guide portion 13, the annular channel first narrowing and then widening in the direction of the air outlet 21.

[0055] The annular channel narrows towards the air outlet 21, reducing the ventilation area and increasing the airflow velocity, thus achieving rapid airflow and improving hair drying efficiency. The annular channel then widens towards the air outlet 21, increasing the airflow area to match the outlet and optimizing airflow characteristics. While maintaining airflow speed, the enlarged annular channel reduces airflow loss, maintains air volume, and ensures sufficient air pressure at the air outlet 21, facilitating hair styling.

[0056] like Figure 3 , 4 As shown, in a preferred embodiment, the outer casing 20 includes a raised portion 22 fitted around the outer periphery of the air guide portion 13 and a flat nozzle portion 23 forming an air outlet 21. The flat nozzle portion 23 extends to both sides of the raised portion 22 and includes an outwardly expanding channel 233 whose width gradually increases along the air outlet direction and an air-gathering channel 234 whose width remains constant. Figure 4 In the diagram, the outward expansion channel 233 and the air-gathering channel 234 are separated by a dotted line. The air outlet 21 is located at the front end of the air-gathering channel 234. More preferably, the outward expansion channel 233 extends in the air outlet direction to the front of the guide section 13, and the second diverter plate 32 extends into the air-gathering channel 234.

[0057] By setting up an outward expansion channel 233 with a gradually increasing width and a concentrating air channel 234 with a constant width, the outward expansion channel 233 avoids airflow obstruction and loss, maintaining the airflow of the air outlet 21, which is conducive to the user's quick hair styling; at the same time, the concentrating air channel 234 prevents excessive airflow from converging to both sides of the air outlet 21 along the inclined and expanding outward expansion channel 233, and guides the airflow to the center and vertically discharge from the air outlet 21, thereby achieving uniform airflow, reducing noise caused by high local airflow velocity, and achieving uniform hair styling.

[0058] By extending the outward expansion channel 233 along the air outlet direction to the front of the guide section 13, and utilizing the combination of the side wall of the outward expansion channel 233, the guide section 13, and the raised section 22 for multiple guidance, the airflow can flow quickly and smoothly to the air outlet 21, improving the drying efficiency. The second diverter plate 32 extends into the air gathering channel 234, extending the length of the airflow separation and guidance, further preventing the airflow from crossing and converging to both sides of the air outlet 21 to form local high-speed airflow, guiding the airflow to be discharged vertically to the air outlet 21, and improving the uniform airflow effect at the air outlet 21.

[0059] like Figure 4 As shown, the flat nozzle 23 includes a top wall, a bottom wall, and an air-expanding side wall 231 connecting the top wall and the bottom wall. Both the top wall and the bottom wall protrude outward from the air-expanding side wall 231 to form a gripping part 40.

[0060] Since the nozzle may become hot after use due to the hot air, a grip 40 is formed by the top and bottom walls protruding outwards from the diffuser side wall 231. This facilitates the user's disassembly and assembly of the nozzle, while also preventing burns during disassembly, making operation convenient and worry-free. Moreover, the grip 40 is formed by the top and bottom walls of the flat nozzle 23, eliminating the need for additional structural design, simplifying the nozzle structure, and making it lightweight.

[0061] Of course, in other embodiments, multiple ribs can be protruding outward from the ventilation sidewall 231, and heat dissipation grooves can be formed between the multiple ribs. The multiple ribs can be used to form a local thickening structure to achieve the purpose of preventing burns.

[0062] This utility model does not limit the specific structure of the first diverter plate 31 and the second diverter plate 32. For example, in a preferred embodiment, such as... Figure 5 , 6 As shown, in this embodiment, the first diverter plate 31 is symmetrically arranged on the upper and lower sides of the guide section 13, and the settling groove 131 extends to the upper and lower sides of the guide section 13 and is symmetrically arranged. The second diverter plate 32 is recessed at one end facing the guide section 13 to form a mating groove 321. The bottom wall of the mating groove 321 abuts against the front end of the guide section 13, and the side wall of the mating groove 321 is inserted into the settling groove 131.

[0063] A mating groove 321 is formed by recessing the second diverter plate 32 towards the guide section 13. The sidewall of the mating groove 321 is inserted into the recessed groove 131, and simultaneously, the bottom wall of the mating groove 321 abuts against the front end of the guide section 13, forming a second insertion fit. This further improves the positioning accuracy and connection stability of the outer shell 20 and the inner shell 10, enhances the coaxiality of the outer shell 20 and the inner shell 10, ensures uniform airflow from the outlet channel, and reduces the fit tolerance between the outer shell and the inner shell to minimize gaps and prevent airflow loss due to leakage and cross-flow, thus ensuring effective airflow from the outlet.

[0064] like Figure 5 As shown, preferably, the front end face of the guide portion 13 is provided with an annular extension rib 133, the extension rib 133 is provided with a notch 132 communicating with the settling groove 131, the side wall of the mating groove 321 is limited to the notch 132, and the bottom wall of the mating groove 321 abuts against the front end face of the guide portion 13. Of course, in other embodiments, the bottom wall of the mating groove 321 may optionally abut against the end of the extension rib 133.

[0065] By setting an extension rib 133 at the front end of the flow guide 13, the sink 131 achieves the first limiting on the side wall of the mating groove 321, and the notch 132 of the extension rib 133 forms the second limiting on the side wall of the mating groove 321, thus realizing the precise and stable connection between the flow guide 13 and the second diverter plate 32, achieving the precise positioning of the inner shell 10 and the outer shell 20, thereby ensuring the rapid and reliable fixing of the inner shell 10 and the outer shell 20.

[0066] In addition, it should be noted that this utility model is not limited to the above-mentioned symmetrical arrangement of the first diverter plate 31 and the sink 131 on both sides of the guide section 13. In fact, on one side of the guide section 13, the first diverter plate 31 can be extended to occupy more than half of the axial length of the guide section 13, and the sink 131 extends along the direction of the first diverter plate 31; on the other side of the guide section 13, the sink 131 can be extended to occupy more than half of the axial length of the guide section 13. Correspondingly, the second diverter plate 32 has an asymmetrical structure to correspond to the sink 131 on both sides of the guide section 13.

[0067] More specifically, such as Figure 6 As shown, the second diverter plate 32 includes a cylinder 322 coaxially protruding from the front end of the guide section 13 and a plate 323 connected to the upper and lower sides of the cylinder 322.

[0068] By setting the second diverter plate 32 as a cylindrical 322 and plate 323 structure, since the cylindrical 322 is coaxially protruding at the front end of the guide section 13, it will not obstruct the airflow passing through the guide section 13 and will not affect the smooth flow of airflow. At the same time, the cylindrical 322 part is used to strengthen the second diverter plate 32, and during the injection molding of the outer shell 20, the cylindrical 322 corresponds to the injection port position, which does not require careful design and simplifies the processing technology.

[0069] In fact, in other implementation methods, the second diverter plate 32 can also be a flat plate.

[0070] This utility model does not limit the fixing method of the outer shell 20 and the inner shell 10. For example, the base 11 is ultrasonically welded to the outer shell 20; or the base 11 is fixed to the outer shell 20 by a snap fastener.

[0071] Using ultrasonic welding or snap-fit ​​fastening methods eliminates the need for additional fastening parts and adhesives, simplifying the nozzle structure and preventing the fastening location from being exposed to the user, thus improving the nozzle's aesthetics. Ultrasonic welding achieves high-strength and permanent connections, reinforcing the connection between the outer shell 20 and the inner shell 10. Snap-fit ​​fastening offers flexible and convenient operation, enabling rapid assembly while maintaining low cost.

[0072] like Figure 5 As shown, in a preferred embodiment, the base 11 is an annular base 11 surrounding the air inlet end of the guide section 13, the air inlet 12 is an annular air inlet 12 formed between the guide section 13 and the base 11, and the first diverter plate 31 extends into the air inlet 12 and connects the guide section 13 to the base 11.

[0073] The base 11 is annular, which eliminates the need to consider the installation angle when installing it with the blower body, enabling multi-angle installation, saving the trouble of alignment, and making operation convenient. The annular base 11 also corresponds to the shape of the air guide 13. The first diverter plate 31 extends into the air inlet 12 and connects the air guide 13 to the base 11. The airflow entering from the air inlet 12 is directly guided forward by the first partition plate 30. At the same time, the first partition plate 30 also serves as a connection between the air guide 13 and the base 11. The nozzle structure is simple, compact, and lightweight.

[0074] like Figure 1-6 As shown, in a preferred embodiment, the first diverter plate 31 and the second diverter plate 32 are perpendicular to the extension direction of the air outlet 21.

[0075] Because the flat air outlet 21 has a more obvious uneven airflow phenomenon in its extension direction, that is, the wind speed is fast on both sides and slow in the middle along the extension direction of the air outlet 21, the first diverter plate 31 and the second diverter plate 32 are perpendicular to the extension direction of the air outlet 21, thereby longitudinally dividing the airflow of the air outlet channel in the extension direction of the air outlet 21, evenly forming two airflows, and achieving a more effective uniform airflow effect.

[0076] Of course, in another embodiment of the present invention, the first diverter plate 31 and the second diverter plate 32 extend along the extension direction of the air outlet 21, thereby dividing the airflow of the air outlet channel into two channels laterally along the air outlet 21.

[0077] Alternatively, in another preferred embodiment, two sets of the first diverter plate 31 and the second diverter plate 32 are provided. One set of the first diverter plate 31 and the second diverter plate 32 extends along the extension direction of the air outlet 21, and the other set of the first diverter plate 31 and the second diverter plate 32 extends perpendicular to the extension direction of the air outlet 21, so as to divide the air outlet channel into four air outlet channels.

[0078] like Figure 7 As shown, this utility model also provides a hair dryer, comprising a main body 100, a handle 200, and a nozzle 300, wherein the nozzle can be any of the nozzles described in the above embodiments. Optionally, the nozzle 300 is detachably mounted on the air outlet end of the main body. Specifically, the nozzle includes a magnet 50 fixed on the inner shell, and the nozzle is attracted to the main body 100 by the magnet.

[0079] More preferably, the main body is provided with an identification element, and the nozzle also includes a detection element 60 that cooperates with the identification element to realize the identification of the nozzle position or type. In one specific embodiment, the identification element is a Hall element or a reed switch, and the detection element is a magnet; in another embodiment, the identification element is an RFID board (Radio Frequency Identification Board), and the detection element is a tag board.

[0080] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0081] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0082] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A nozzle for a hair dryer, comprising an inner shell and an outer shell sleeved outside the inner shell, wherein the air outlet end of the outer shell has a flat air outlet, forming an air outlet channel between the inner shell and the outer shell, characterized in that, The inner shell includes a base with an air inlet and a guide portion disposed on the base. The outer shell is fitted around the outer periphery of the guide portion and fixedly connected to the base. The guide portion protrudes from the base toward the air outlet and its outer diameter gradually narrows. A first diverter plate coaxial with the guide portion and a recessed groove are provided on the outer peripheral wall of the guide portion. The first diverter plate is closer to the air inlet than the groove and abuts against the inner wall of the outer shell. A second diverter plate protrudes from the inner wall of the outer shell. The second diverter plate extends toward the air outlet relative to the guide portion. The second diverter plate is inserted into the groove and its end face is connected to the end face of the first diverter plate to form a complete partition plate. The partition plate divides the air outlet channel.

2. The nozzle of a hair dryer according to claim 1, characterized in that, The outer casing includes a raised portion and a flat nozzle portion forming an air outlet. The raised portion covers the air guide portion. An arc-shaped transition wall connects the raised portion and the flat nozzle portion. The second diverter plate extends toward the air outlet, passes through the arc-shaped transition wall, and reaches the flat nozzle portion.

3. The nozzle of a hair dryer according to claim 2, characterized in that, The air inlet end of the raised portion is folded outward to form a flange to be fixed to the base. The flat nozzle portion has air-expanding sidewalls on both sides of the raised portion. The air-expanding sidewalls extend outward at an angle along the air outlet direction, and the air inlet end of the air-expanding sidewalls is connected to the flange through an annular transition wall.

4. The nozzle of a hair dryer according to claim 2, characterized in that, The air outlet channel includes an annular channel located between the raised portion and the guide portion, and the annular channel first narrows and then widens towards the air outlet.

5. The nozzle of a hair dryer according to claim 1, characterized in that, The outer casing includes a raised portion fitted around the outer periphery of the air guide portion and a flat nozzle portion forming an air outlet. The flat nozzle portion extends to both sides of the raised portion. The flat nozzle portion includes an outwardly expanding channel whose width gradually increases along the air outlet direction and an air-gathering channel whose width remains unchanged. The air outlet is located at the front end of the air-gathering channel.

6. The nozzle of a hair dryer according to claim 5, characterized in that, The outward expansion channel extends in the direction of airflow to the front of the guide section, and the second diverter extends into the air-gathering channel.

7. The nozzle of a hair dryer according to claim 1, characterized in that, The second diverter plate is recessed at one end toward the guide section to form a mating groove. The bottom wall of the mating groove abuts against the front end of the guide section, and the side wall of the mating groove is inserted into the settling groove.

8. The nozzle of a hair dryer according to claim 7, characterized in that, The front end face of the flow guide is provided with an annular extension rib, the extension rib is provided with a notch communicating with the settling trough, the side wall of the mating groove is limited to the notch, and the bottom wall of the mating groove abuts against the front end face of the flow guide.

9. The nozzle of a hair dryer according to claim 1, characterized in that, The second diverter plate includes a cylinder coaxially protruding from the front end of the diverter and a plate body connected to the upper and lower sides of the cylinder.

10. The nozzle of a hair dryer according to claim 1, characterized in that, The base is ultrasonically welded to the outer shell or fixed by snap-fit; Alternatively, the housing includes a raised portion fitted around the outer periphery of the air guide and a flat nozzle portion forming an air outlet. The flat nozzle portion includes a top wall, a bottom wall, and an air-expanding side wall connecting the top wall and the bottom wall. Both the top wall and the bottom wall protrude outward from the air-expanding side wall to form a grip portion. Alternatively, the base is an annular base surrounding the air inlet end of the guide section, the air inlet is an annular air inlet formed between the guide section and the base, and the first splitter plate extends into the air inlet and connects the guide section to the base; Alternatively, the first and second diverter plates are perpendicular to the extending direction of the air outlet.

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