Hair dryer structure and hair care device

Abstract

This utility model provides a hair dryer structure and a hair care device. The hair dryer structure includes: a support body having a hollow airflow cavity, an air inlet at one end of the support body extending in the direction of extension, and multiple first air outlets provided on the side wall of the support body; and an air outlet surrounding the outer periphery of the support body, with multiple second air outlets provided on the air outlet. The air outlet direction of the second air outlets forms a first guiding angle with the outer wall of the air outlet, the first guiding angle being an acute angle, and the air outlet direction of the second air outlets is inclined and offset towards the end where the air inlet is located, so that the second air outlets guide the airflow discharged from the first air outlets to the surface of the air outlet in a spiral flow. According to the hair dryer structure of this application, when hair is wrapped around the air outlet, due to the influence of gravity, the hair hangs and tilts downwards towards the air inlet, and the second air outlets make the rotation direction of the airflow match the direction of the hair strands, so that the airflow can flow along the extension path of the hair strands.

Description

Technical Field

[0001] This utility model relates to the field of hair care technology, specifically to a hair dryer structure and a hair care device. Background Technology

[0002] As people's demands for hair care continue to increase, they not only want their hair to dry quickly, but also seek smoothness, styling effects, and reduced hair damage. However, existing hair dryers are not effective at simultaneously drying and styling their hair.

[0003] Therefore, there is an urgent need for a new type of hair care device. Utility Model Content

[0004] In view of this, the present invention aims to provide a hair dryer structure and hair care device to solve the problem of poor results when blow-drying and conditioning are performed simultaneously in the prior art.

[0005] In a first aspect, this application proposes a hair dryer structure for a hair care device, comprising:

[0006] The support body has a hollow airflow cavity, an air inlet at one end of the extension direction of the support body, and multiple first air outlets on the side wall of the support body.

[0007] An air outlet is provided on the outer periphery of the support body. Multiple second air outlets are provided on the air outlet. The air outlet direction of the second air outlet forms a first guiding angle with the outer wall of the air outlet. The first guiding angle is an acute angle. The air outlet direction of the second air outlet is tilted and offset towards the end where the air inlet is located, so that the second air outlet guides the airflow discharged from the first air outlet to the surface of the air outlet in a spiral flow.

[0008] According to the duct structure of this application, the end of the second air outlet facing the outer wall of the air outlet has a first guide channel communicating with the second air outlet, and the bottom of the first guide channel is provided with a first guide surface arched in the same direction as the outer wall of the air outlet; the flattened shape of the first guide surface is a parallelogram, and the parallelogram has an interior angle of not 90°.

[0009] Optionally, the second air outlet and the first air outlet are eccentrically positioned in a one-to-one correspondence, and the eccentric direction of the second air outlet relative to the first air outlet is consistent with the deflection direction of the first guide angle; the flattened area of ​​the first guide surface is less than or equal to the flattened area of ​​the first air outlet.

[0010] According to the duct structure of this application, the end of the second air outlet facing the inner wall of the air outlet has a second guide channel communicating with the second air outlet. The top of the second guide channel is provided with a second guide surface that arches in the same direction as the inner wall of the air outlet. The second guide channel is directly opposite the first air outlet.

[0011] According to the duct structure of this application, the angle between the air outlet direction of the second air outlet and the circumferential tangent direction of the air outlet is 5° to 25°.

[0012] According to the duct structure of this application, the duct includes multiple arc-shaped plates spliced ​​around the central axis of the support body. The multiple arc-shaped plates form a continuous and smooth arc surface. Each arc-shaped plate is provided with multiple second air outlets. The multiple second air outlets are arranged at intervals in the extension direction of the duct. Adjacent rows of second air outlets are staggered in the extension direction of the duct.

[0013] Optionally, the support body is also provided with multiple limiting ports, which are connected to the adjacent first air outlet in the axial direction. The inner side of the arc plate is provided with multiple snap-fit ​​pieces, which are snapped into the limiting ports.

[0014] Each curved plate is provided with two rows of second air outlets, and the first air outlets and second air outlets are set one-to-one. Multiple limit ports are located in the same row, and there are at least two first air outlets between two adjacent limit ports.

[0015] Optionally, the distance between two adjacent second air outlets in each column is L1, and the length of the second air outlet in the extension direction of the curved plate is L2, where L1 and L2 satisfy: 1 ​​≤ L1 / L2 ≤ 2.4; and / or

[0016] The length of the curved plate in the direction of the air outlet is L3, and the number of second air outlets in each row is N, where L3 and N satisfy: 10mm ≤ L3 / N ≤ 15mm; and / or

[0017] The length of the curved plate in the direction of the air outlet is L3, and the length of the second air outlet in the direction of the curved plate is L2. L3 and L2 satisfy: 13≤L3 / L2≤17; and / or

[0018] The length of the second air outlet in the extension direction of the curved plate is L2, and L2 satisfies 3mm≤L2≤7.5mm.

[0019] Secondly, this application proposes a hair dryer structure for a hair care device, comprising:

[0020] The support body has a hollow airflow cavity, an air inlet at one end of the extension direction of the support body, and multiple first air outlets on the side wall of the support body.

[0021] An air outlet is provided around the outer periphery of the support body. The air outlet includes multiple arc-shaped plates spliced ​​around the central axis of the support body. Each arc-shaped plate is provided with multiple second air outlets. The distance between two adjacent second air outlets in each row is L1, and the length of the second air outlet in the extension direction of the arc-shaped plate is L2. L1 and L2 satisfy: 1≤L1 / L2≤2.4.

[0022] Thirdly, this application proposes a ventilation duct structure, including:

[0023] The support body has a hollow airflow cavity, an air inlet at one end of the extension direction of the support body, and multiple first air outlets on the side wall of the support body.

[0024] An air outlet duct is arranged around the outer periphery of the support body. The air outlet duct includes multiple arc-shaped plates spliced ​​around the central axis of the support body. Each arc-shaped plate is provided with at least one row of second air outlets. The length of the arc-shaped plate in the extension direction of the air outlet duct is L3, and the number of second air outlets in each row is N. L3 and N satisfy: 10mm≤L3 / N≤15mm.

[0025] Fourthly, this application proposes a ventilation duct structure, comprising:

[0026] The support body has a hollow airflow cavity, an air inlet at one end of the extension direction of the support body, and multiple first air outlets on the side wall of the support body.

[0027] An air outlet is provided around the outer periphery of the support body. The air outlet includes multiple arc-shaped plates spliced ​​around the central axis of the support body. Each arc-shaped plate is provided with multiple second air outlets. The length of the arc-shaped plate in the extension direction of the air outlet is L3, and the length of the second air outlet in the extension direction of the arc-shaped plate is L2. L3 and L2 satisfy: 13≤L3 / L2≤17.

[0028] Fifthly, this application proposes a ventilation duct structure, comprising:

[0029] The support body has a hollow airflow cavity, an air inlet at one end of the extension direction of the support body, and multiple first air outlets on the side wall of the support body.

[0030] An air outlet is arranged around the outer periphery of the support body. The air outlet includes multiple arc-shaped plates spliced ​​around the central axis of the support body. Each arc-shaped plate is provided with multiple second air outlets. The length of the second air outlet in the extension direction of the arc-shaped plate is L2, and L2 satisfies 3mm≤L2≤7.5mm.

[0031] Sixthly, this application proposes a hair care device, including the above-mentioned air duct structure, wherein the air outlet direction of the second air outlet forms a first guide angle with the outer wall of the air duct, the first guide angle being an acute angle, and the air outlet direction of the second air outlet is tilted and offset towards the end where the air inlet is located, so that the second air outlet guides the airflow discharged from the first air outlet to the surface of the air duct in a spiral flow.

[0032] The technical solutions provided in this application have the following advantages compared with the prior art:

[0033] The air duct structure provided in this application involves an airflow cavity in the support body that draws in air through an air inlet and discharges the airflow through a first air outlet located on the side wall. An air outlet duct surrounds the support body, and a second air outlet on the outer wall of the air outlet duct forms a guide angle with the outer wall of the air outlet duct at an acute angle. The airflow direction of the second air outlet is tilted and offset towards the end where the air inlet is located, allowing the airflow through the second air outlet to flow outwards while simultaneously shifting towards the air inlet. When hair is wrapped around the air outlet duct, due to gravity, the hair hangs downwards towards the air inlet, and the second air outlet causes the airflow to swirl... The airflow direction is aligned with the direction of the hair strands, allowing it to flow along the hair's path rather than impacting it vertically. The spiral airflow tightly wraps around the hair strands, reducing direct impact on the hair cuticles and lowering the risk of hair damage. At the same time, the spiral airflow extends the contact path with the hair, enhancing heat exchange efficiency and speeding up the drying process. When styling, the tilted airflow direction helps the curling iron guide the airflow to the curled hair strands, aiding in setting the style, making the curls last longer and the style more natural, thus achieving efficient hair care and styling. Attached Figure Description

[0034] Figure 1 The image shown is a perspective view of the ventilation duct structure according to an embodiment of this application.

[0035] Figure 2 The image shown is a perspective view of the air duct structure according to an embodiment of this application, in which the air inlet is shown.

[0036] Figure 3 The image shown is a perspective view of the duct structure according to an embodiment of this application from another angle.

[0037] Figure 4 The image shown is a front view of the ventilation duct structure according to an embodiment of this application.

[0038] Figure 5 It shows Figure 4 Cross-sectional view at point AA.

[0039] Figure 6 It shows Figure 4 Enlarged view of point D in the middle.

[0040] Figure 7 The image shown is a side view of the arc-shaped plate of the wind tunnel structure according to an embodiment of this application.

[0041] Figure 8 The figure shown is a perspective view of the arc-shaped plate of the air duct structure according to an embodiment of this application, in which the second flow channel and the snap-fit ​​component are shown.

[0042] Figure 9 The image shown is a bottom view of the arc-shaped plate of the wind tunnel structure according to an embodiment of this application.

[0043] Figure 10 The figure shown is a perspective view of the support body of the wind tunnel structure according to an embodiment of this application.

[0044] Figure 11 The image shown is a front view of the support body of the duct structure according to an embodiment of this application.

[0045] Figure 12 The image shown is a 3D view of the mold.

[0046] Figure 13 The image shown is a three-dimensional view of a partial structure of the mold.

[0047] Figure 14 As shown Figure 13 Enlarged view of point B in the middle.

[0048] Reference numerals: Support body 10, first air outlet 11, limiting port 12, air inlet 13, air outlet 20, first guide channel 21, second guide channel 22, arc plate 23, snap-fit ​​part 24, second air outlet 25, connecting part 30, first forming mold 40, second forming mold 50, ejector rod 60, first sub-part 61, second sub-part 62, forming groove 621. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0051] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0052] Currently, some multi-layered hair dryers have poor airflow direction matching with the hair direction, which easily leads to airflow turbulence when curling hair, resulting in low drying efficiency and poor styling effect. To address this, this application proposes a hair dryer structure that allows airflow to tightly wrap around the hair strands, reduces the impact of airflow on the hair, prolongs the contact time with the hair, improves drying efficiency, and helps to set the hair strands, achieving a more natural and long-lasting styling effect.

[0053] like Figures 1-5 As shown, the air duct structure according to an embodiment of this application is used for a hair care device, including a support body 10 and an air outlet 20.

[0054] like Figure 3 , Figure 5 , Figure 10 as well as Figure 11 As shown, specifically, the support body 10 has a hollow airflow cavity, one end of the support body 10 in the extension direction has an air inlet 13, and a plurality of first air outlets 11 are provided on the side wall of the support body 10; the air outlet duct 20 is arranged around the outer periphery of the support body 10.

[0055] The air outlet duct 20 is provided with multiple second air outlets 25. The air outlet direction of the second air outlet 25 forms a first guide angle with the outer wall of the air outlet duct 20. The first guide angle is an acute angle, and the air outlet direction of the second air outlet 25 is tilted and offset towards the end where the air inlet 13 is located, so that the second air outlet 25 guides the airflow discharged from the first air outlet 11 to the surface of the air outlet duct 20 to flow in a spiral shape.

[0056] The support 10 is a hollow columnar structure, which can be cylindrical, elliptical, or curved. One end of the support 10 is open, and the other end is closed. The airflow cavity is a blind hole coaxial with the support 10.

[0057] The first air outlet 11 is evenly distributed along the circumference and axial direction of the side wall of the support 10, or distributed according to a specific pattern. The shape of the air outlet can be a circular through hole, a rectangular through hole, an elliptical through hole, a parallelogram through hole, a trapezoidal through hole, a triangular through hole, or a polygonal through hole (more than four sides), etc. The air outlet direction of the first air outlet 11 is along the radial direction of the support 10.

[0058] The shapes of the multiple first air outlets 11 can be the same or different, and the flattened areas of the multiple first air outlets 11 can be the same or partially the same and partially different. The first air outlets 11 can be formed on the support body 10 by means of injection molding, casting, die casting, or other integral molding methods.

[0059] The air outlet duct 20 is a cylindrical structure coaxially arranged with the support body 10. The shape of the inner wall of the air outlet duct 20 may be completely or partially matched with the cross-sectional shape of the support body 10. For example, a cylindrical air outlet duct 20 paired with a cylindrical support body 10 can achieve uniform airflow diffusion; an elliptical cylindrical air outlet duct 20 paired with an elliptical cylindrical support body 10 can achieve directional airflow guidance; and an elliptical cylindrical air outlet duct 20 paired with a cylindrical support body 10. The air outlet duct 20 can be integrally formed or formed in parts and then spliced ​​together.

[0060] The air outlet 25 has an acute angle formed with the first guide angle between its air outlet direction and the outer wall surface of the air outlet duct 20. That is, the angle between the air outlet direction of the second air outlet 25 and the tangent direction of the surface of the air outlet duct 20. For example, when the air outlet duct 20 is cylindrical, the tangent direction is circumferential; when the air outlet duct 20 is an elliptical cylinder or a curved cylinder, the tangent direction is the tangent direction of the corresponding wall surface at that point.

[0061] The air outlet 25 forms an angle α with the circumferential tangent of the outer wall of the air outlet duct 20, ranging from 5° to 85°, for example, 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, and 85°. The smaller the angle, the weaker the tendency of the airflow to deflect towards the air inlet, and the gentler the spiral trajectory of the airflow flowing out of the second air outlet 25; the larger the angle, the more compact the spiral trajectory of the airflow flowing out of the second air outlet 25.

[0062] The airflow direction of the second air outlet 25 has both circumferential and axial components along the air outlet duct 20. The circumferential component of the airflow direction of the second air outlet 25 along the air outlet duct 20 has a second guiding angle with the airflow direction of the first air outlet 11. This allows the airflow from the second air outlet 25 to be deflected in the circumferential direction and propelled in the axial direction of the air outlet duct 20. The second guiding angle β is 0° to 45°, for example, 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, and 45°.

[0063] The opening direction of all second air outlets 25 is tilted and offset towards the end where the air inlet 13 is located. That is, when viewed from the outer wall of the air outlet duct 20, the opening direction is both outward and deflected towards the air inlet end, such as obliquely to the upper left or obliquely to the lower left, etc., and the specific direction is consistent with the axis of the support body 10. Here, "outward" in the above description refers to the direction away from the axis of the air outlet duct 20 or the support body 10.

[0064] One first air outlet 11 corresponds to at least one second air outlet 25. For example, one first air outlet 11 corresponds to one second air outlet 25; or one first air outlet 11 corresponds to two second air outlets 25.

[0065] In some embodiments, the support 10 is cylindrical, the first air outlet 11 is a circular through hole, and the second air outlet 25 can be set as an elliptical through hole with the major axis direction consistent with the tilt offset direction, so that the airflow can be guided to the direction of the air inlet when it passes through.

[0066] In some embodiments, the support 10 is an elliptical cylinder and the first air outlet 11 is a long strip groove, while the second air outlet 25 can be configured as a parallelogram groove.

[0067] Air is drawn into the airflow cavity of the support body 10 through the air inlet 13 and discharged through the first air outlet 11 located on the side wall. The air outlet 20 surrounds the support body 10. The second air outlet 25 on the outer wall of the air outlet 20 forms a first guide angle with the outer wall of the air outlet 20 at an acute angle, which makes the air outlet structure have a strong circumferential suction force, allowing hair to be easily wrapped around the air outlet 20 with only the user's assistance. Moreover, the air outlet direction of the second air outlet 25 is tilted and offset towards the end where the air inlet 13 is located, so that the airflow through the second air outlet 25 can be deflected towards the air inlet 13 while flowing outward. When the hair is wrapped around the air outlet 20, due to the influence of gravity, the hair hangs downward and tilts towards the air inlet 13. The second air outlet 25 makes the rotation direction of the airflow match the direction of the hair strands, so that the airflow can flow along the extension path of the hair strands, rather than impacting the hair vertically.

[0068] According to the air duct structure of this application embodiment, the spiral airflow can tightly wrap around the hair strands, reducing direct impact on the hair cuticles and lowering the risk of hair damage. At the same time, the spiral airflow extends the contact path with the hair, enhances heat exchange efficiency, and speeds up the drying process. During styling, the tilted and offset airflow direction can assist the curling iron in guiding the airflow along the force to the curled hair strands, helping to set the style, making the curls last longer and the style more natural, thereby achieving efficient hair care and efficient styling.

[0069] In actual use, when the airflow enters the second air outlet 25 through the gap between the support 10 and the air outlet 20, it is easy to divert and disperse due to the change in flow direction. Only part of the airflow can maintain the spiral trajectory, which makes it easy for some areas to be too dry and some areas to be wet when styling curly hair, as well as the problem of not being able to hold the style for long. The airflow utilization rate is not high. Therefore, this application proposes an air outlet structure.

[0070] like Figures 3-6 As shown, according to the embodiment of the present application, the second air outlet 25 has a first guide channel 21 communicating with the outer wall of the air outlet 20 at one end. The bottom of the first guide channel 21 is provided with a first guide surface that arches in the same direction as the outer wall of the air outlet 20.

[0071] The inlet of the first guide channel 21 is directly connected to the outer end of the second air outlet 25. That is, the inlet of the first guide channel 21 is the opening of the air outlet on the outer wall of the air outlet 20. The outlet of the first guide channel 21 is flush with or slightly lower than the outer wall surface of the air outlet 20 to avoid the protrusion from snagging hair.

[0072] The first guide surface is located at the bottom of the first guide channel 21, that is, the inner surface where the first guide channel 21 connects to the air outlet duct 20, and arches in the same direction as the outer wall of the air outlet duct 20. If the outer wall of the air outlet duct 20 protrudes outwards, the first guide surface also protrudes outwards. The lowest point of the first guide surface is located at the inlet end of the first guide channel 21, that is, at the opening of the second air outlet 25 on the outer wall. The highest point of the first guide surface is located at the outlet end of the first guide channel 21, that is, at the connection point with the outer wall of the air outlet duct 20. In other words, the distance between the first guide surface and the outer wall of the air outlet duct 20 gradually decreases in the direction from the inlet end to the outlet end of the first guide channel 21.

[0073] The arch height of the first guide surface can be linearly varied, meaning the first guide surface can be an inclined surface, or it can be non-linearly varied, meaning the first guide surface is a curved surface.

[0074] The first guide channel 21 provides an extended flow path for the airflow at the second outlet 25, mitigating abrupt changes and divergence in airflow and guiding its direction. The width of the first guide channel 21 remains constant throughout, and the width of the first guide channel 21 is perpendicular to the flow direction of the gas within the first guide channel 21.

[0075] According to the duct structure of this application embodiment, the first guide channel 21 can extend the movement path of the airflow spiral, providing more space for airflow to adjust direction. The Coanda effect is used to guide the airflow to adhere and flow along the first guide surface, thereby forming a stable and close spiral flow trajectory on the surface of the air outlet 20, which significantly improves the airflow guidance accuracy and avoids the airflow direction from diverging when there is no guide structure after the airflow flows out of the second air outlet 25. This allows the spiral airflow to wrap around the hair more evenly and reduces the impact on the hair cuticle.

[0076] like Figure 6 As shown, in some embodiments, the flattened shape of the first guide surface is a parallelogram, and the parallelogram has an interior angle that is not 90°.

[0077] In the above embodiments, the flattened shape refers to the projected shape of the first guide surface after it has been unfolded into a plane along the airflow direction.

[0078] One pair of opposite sides of the parallelogram are parallel to the tilt direction of the second air outlet 25. If the air outlet tilts 30° to the upper left, the airflow direction in the guide channel is also 30° to the left. On the one hand, this allows the airflow to flow along the sidewalls of the first guide channel 21 located on both sides of the first guide surface, reducing airflow impact loss and improving energy utilization. On the other hand, it can be adapted to air outlets 20 of different cylindrical shapes, and the regular geometric features of the parallelogram simplify mold design. By adjusting the size of the inner angles, it can adapt to different needs, improve molding efficiency and yield, and reduce production costs while achieving efficient airflow.

[0079] The other pair of opposite sides of the parallelogram are parallel to the axial direction of the air outlet 20. As the airflow approaches and exits the first guide channel 21, it contacts a smooth surface without abrupt changes in curvature. This results in minimal resistance from the first guide channel 21 and a weaker velocity decay, allowing the airflow to maintain a higher level after leaving the air outlet, thus shortening the drying time. Simultaneously, it simplifies mold design, enabling demolding through a simple axial slider.

[0080] In actual use, if the first air outlet 11 and the second air outlet 25 are coaxially arranged, the airflow is prone to separation due to sudden change in direction during the transition from the support body 10 to the air outlet duct 20, resulting in unstable spiral airflow. Therefore, this application proposes a novel air duct structure.

[0081] In some embodiments, the flattened shape of the first air outlet 11 is formed as a parallelogram similar to the flattened shape of the first guide surface, and it also has two opposite sides parallel to the air outlet direction of the second air outlet 25.

[0082] In some embodiments, the second air outlet 25 and the first air outlet 11 are corresponding one-to-one and are eccentrically arranged, and the eccentric direction of the second air outlet 25 relative to the first air outlet 11 is consistent with the deflection direction of the first guide angle.

[0083] The first air outlet 11 is located on the side wall of the support body 10, and the second air outlet 25 is located on the side wall of the air outlet duct 20. The two are radially aligned, but the central axes of the first air outlet 11 and the second air outlet 25 do not coincide. The eccentric direction of the second air outlet 25 relative to the first air outlet 11 is the offset direction of the center of the second air outlet 25 relative to the center of the first air outlet 11. For example, if the air duct is upright, the air inlet 13 is at the top, and the air outlet 25 is tilted to the upper left, then the second air outlet 25 is also located on the upper left side near the first air outlet 11.

[0084] According to the wind tunnel structure of the embodiment of this application, the airflow can be arranged in such a way that when the airflow flows from the support 10 to the air outlet 20, it naturally converges in the annular gap between the support 10 and the air outlet 20 along the eccentric direction of the second air outlet 25 and the first air outlet 11. This adjusts the flow trajectory of the airflow in advance, avoids sudden changes in direction or turbulence when the airflow reaches the second air outlet 25, and makes it easier for the spiral airflow to adhere closely to the outer wall of the air outlet 20 and be output evenly.

[0085] In some embodiments, the flattened area of ​​the first guide surface is less than or equal to the flattened area of ​​the first air outlet 11.

[0086] The first air outlet 11 is located on the side wall of the support body 10 to provide an initial outlet for the airflow. The extension direction of the first guide surface is consistent with the target flow direction of the airflow, ensuring that the contracted airflow is guided along the target direction. The protrusion direction of the first guide surface matches the protrusion direction of the outer wall of the air outlet duct 20, which can prevent the airflow from separating from the outer wall of the air outlet duct 20.

[0087] In some embodiments, the flattened area of ​​the first guide surface is smaller than the flattened area of ​​the first air outlet 11; in some embodiments, the flattened area of ​​the first guide surface is equal to the flattened area of ​​the first air outlet 11.

[0088] According to the air duct structure of the embodiments of this application, the airflow will not decrease or increase in velocity during the guiding process, making it easier to form a more concentrated high-speed airflow bundle, thereby enhancing the ability to wrap and dry the hair.

[0089] like Figure 2 , Figure 5 as well as Figure 8 As shown, in some embodiments, the end of the second air outlet 25 facing the inner wall of the air outlet duct 20 has a second guide channel 22 communicating with the second air outlet 25. The top of the second guide channel 22 is provided with a second guide surface that arches in the same direction as the inner wall of the air outlet duct 20. The second guide channel 22 is directly opposite to the first air outlet 11.

[0090] The second guide channel 22 is located at one end of the second air outlet 25 facing the inner wall of the air outlet 20. One end of the second guide channel 22 is connected to the second air outlet 25, and the other end is set directly opposite the first air outlet 11. After the airflow flows out from the first air outlet 11, it flows out along the first air outlet 11 to the second guide channel 22 and flows into the second air outlet 25.

[0091] In some embodiments, the air outlet duct 20 is also provided with a first guide channel 21, so that the airflow flows sequentially along the path of the air inlet 13, the first air outlet 11, the second guide channel 22, the second air outlet 25 and the first guide channel 21.

[0092] The arching direction of the second guide surface is the same as that of the inner wall of the air outlet duct 20. For example, if the inner wall of the air outlet duct 20 arches outward, the second guide surface also arches outward. The direction away from the support 10 is considered outward, and the direction closer to the support 10 is considered inward. The arching height of the second guide surface gradually changes along the airflow direction; that is, the arching height gradually increases from the inlet to the outlet of the second guide channel 22.

[0093] After the airflow exits from the first outlet 11, it flows radially outward along the support 10. The second guide channel 22 guides the airflow to change direction in advance and direct it to the second outlet 25. As the arch height of the second guide channel 22 gradually increases from its inlet to its outlet, the direct impact on the airflow is reduced, and the airflow is guided in the same direction, avoiding turbulence and airflow loss. The second guide surface arches in the same direction as the inner wall of the outlet duct 20, using the Coanda effect to guide the airflow to adhere closely to the inner wall of the outlet duct 20.

[0094] In some embodiments, the outlet end of the second guide surface is parallel to the inlet end of the first guide surface. The outlet end of the second guide surface, the inlet end of the first guide surface, the sidewall where the second guide surface connects to the air outlet duct 20, and the sidewall where the first guide surface connects to the air outlet duct 20 together define the second air outlet 25. This allows for a stable spiral airflow, reducing turbulence and losses. By adjusting the distance between the inlet end of the first guide surface and the outlet end of the second guide surface, the airflow volume of the second air outlet 25 can be adjusted, effectively regulating the flow velocity. This simplifies mold design and allows for parameterized adjustments to adapt to different needs.

[0095] like Figure 6 and Figure 7As shown, in some embodiments, the angle α between the air outlet direction of the second air outlet 25 and the circumferential tangent direction of the air outlet 20 is 5° to 25°. For example, 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19°, 20°, 21°, 22°, 23°, 24°, and 25°, etc.

[0096] According to the hair dryer structure of the present application embodiment, by setting a smaller angle, the airflow has a higher adhesion rate on the wall of the air outlet 20, extending the contact length between the airflow and the outer wall of the air outlet 20, and extending the distance between the separation point of the airflow and the outer wall of the air outlet 20 and the second air outlet 25, thereby improving the hair drying speed.

[0097] like Figures 3-5 , Figure 7 as well as Figure 8 As shown, according to the embodiment of this application, the air duct structure includes a plurality of arc-shaped plates 23 spliced ​​around the central axis of the support body 10. The plurality of arc-shaped plates 23 form a continuous and smooth arc surface. Each arc-shaped plate 23 is provided with a plurality of second air outlets 25. The plurality of second air outlets 25 are arranged at intervals in the extension direction of the air duct 20, and adjacent rows of second air outlets 25 are staggered in the extension direction of the air duct 20.

[0098] Each arc plate 23 can be a circular arc plate, an elliptical arc plate, or a freeform arc plate. The curvature of the arc plate 23 matches the outer contour of the support body 10. For example, a cylindrical support body 10 corresponds to a circular arc plate, and an elliptical cylindrical support body 10 corresponds to an elliptical arc plate.

[0099] The curved plate 23 is made of a material with good thermal conductivity. The curved plate 23 can be a semiconductor thermistor material with a certain temperature sensitivity. In this way, the curved plate 23 can conduct heat. When styling hair with curls, in addition to the airflow discharged from the second air outlet 25 styling the hair, the curved plate 23 with a certain temperature can also heat the hair to style it. The temperature of the curved plate 23 can maintain the uniformity of the temperature during hair styling, thereby improving the effect of hair styling.

[0100] like Figure 4 As shown, multiple second air outlets 25 are arranged in columns along the extension direction of the air outlet duct 20, with uniform spacing between the second air outlets 25 in each column. Adjacent columns of second air outlets 25 are staggered along the extension direction of the air outlet duct 20, with the staggered distance ensuring that the second air outlet 25 in the later column is approximately located in the middle of the two adjacent second air outlets 25 in the previous column. This staggered arrangement effectively avoids blank areas in the airflow during the air outlet process, achieving more uniform airflow coverage.

[0101] In some embodiments, mortise and tenon structures or elastic snap-fit ​​structures can be provided on both sides of the arc plate 23 along the circumferential direction. The tenons and limiting grooves of adjacent arc plates 23 on the same circumference cooperate with each other to achieve tight splicing. If an elastic snap-fit ​​structure is used, an elastic snap-fit ​​is provided on one side of the arc plate 23 along the circumferential direction, and a snap-fit ​​groove is provided on the other side. During assembly, the elastic snap-fit ​​is snapped into the snap-fit ​​groove.

[0102] like Figure 5 , Figure 7 , Figure 8 as well as Figure 9 As shown, in some embodiments, there is no splicing structure between adjacent arc-shaped plates 23. A connector 30 is provided between two axially adjacent arc-shaped plates 23. The connector 30 extends circumferentially along the support body 10 and connects to the support body 10. The connector 30 connects to the two axially adjacent arc-shaped plates 23, thereby fixing the adjacent arc-shaped plates 23 while reducing the installation difficulty of the arc-shaped plates 23. The connector 30 includes, but is not limited to, functions such as heat conduction, heating, display, and indication. In some embodiments, a third air outlet is also provided on the connector 30, which can improve the continuity of airflow, thereby improving the hair adsorption and styling effect.

[0103] In some embodiments, the connector 30 may also be provided with a display area, which is configured to display the time and styling status of the hair styling, so that users can intuitively know the time used for the current hair styling, the remaining time, and the styling status, etc. It can automatically record the time without requiring the user to record it manually, thus improving the user experience.

[0104] In some embodiments, the connector 30 can be an indicator light ring, which can display different light colors to more intuitively indicate to the user the current hair styling time and styling status.

[0105] Multiple second air outlets 25 are arranged in columns along the extension direction of the air outlet 20, with adjacent columns staggered. This effectively ensures that the airflow covers all areas during the airflow process, allowing the airflow to cover the hair more evenly. Whether drying the hair quickly or performing a detailed styling, it ensures that all parts of the hair receive consistent airflow, improving airflow utilization and enhancing hair care results.

[0106] In actual use, if there is a lack of reasonable positioning components between the arc plate 23 and the support body 10, the coaxial accuracy will be reduced, which may cause the second air outlet 25 to be misaligned, resulting in uneven airflow distribution and affecting the hair care effect. Therefore, this application proposes a new type of air duct structure.

[0107] like Figure 3 , Figure 5 , Figure 10as well as Figure 11 As shown, in some embodiments, the support body 10 is also provided with a plurality of limiting ports 12, which are connected to the adjacent first air outlet 11 in the axial direction. The inner side of the arc plate 23 is provided with a plurality of snap-fit ​​pieces 24, which are snapped into the limiting ports 12.

[0108] Multiple limiting openings 12 are provided on the outer side of the support body 10, which are evenly distributed along the circumference or distributed in a specific pattern. The shape of the limiting openings 12 includes, but is not limited to, rectangles, circles, trapezoids or parallelograms. The axial extension direction of the limiting openings 12 is parallel to the axis of the support body 10, which can ensure that the arc plate 23 is stably fixed along the axis of the support body 10 after snapping.

[0109] The limiting port 12 is connected to the adjacent first air outlet 11 in the axial direction, which can ensure that the snap-fit ​​part 24 can still be smoothly snapped into the limiting port 12 even when there is a processing error. This reduces the requirements for the processing accuracy of the arc plate 23 and avoids assembly failure caused by millimeter-level deviation. This not only improves the yield rate in the production process, but also ensures the reliable connection between the arc plate 23 and the support body 10.

[0110] A snap-fit ​​element 24 is provided at a corresponding position on the inner wall of the arc-shaped plate 23. During assembly, the snap-fit ​​element 24 is embedded into the limiting opening 12, thereby achieving precise positioning between the arc-shaped plate 23 and the support body 10, ensuring that the arc-shaped plate 23 is evenly distributed around the central axis of the support body 10, and that the two have a high degree of coaxiality. Typically, the shape of the snap-fit ​​element 24 is adapted to the shape of the limiting opening 12.

[0111] In some embodiments, the snap-fit ​​member 24 protrudes obliquely from the inner wall of the arc-shaped plate 23, corresponding one-to-one with the limiting buckle on the support body 10. In some embodiments, the extension direction of the snap-fit ​​member 24 is consistent with the radial direction of the arc-shaped plate 23, that is, from the inner wall of the arc-shaped plate 23 to the central axis of the support body 10, so that off-center load can be avoided during snap-fit.

[0112] When assembling the arc plate 23 and the support body 10, align the snap-fit ​​piece 24 on the arc plate 23 with the limiting port 12 on the support body 10, and press the outer side of the arc plate 23 radially to make the snap-fit ​​piece 24 embed into the limiting port 12. The position can be slightly adjusted along the direction of the first air outlet 11 to ensure that the snap-fit ​​piece 24 is smoothly snapped into the limiting port 12.

[0113] According to the duct structure of this application embodiment, by providing a limiting port 12 communicating with the first air outlet 11 on the support body 10, and providing a matching snap-fit ​​component 24 on the inner side of the arc-shaped plate 23, the precise positioning and stable connection between the arc-shaped plate 23 and the support body 10 are achieved. The limiting port 12 constrains the arc-shaped plate 23 in the circumferential, axial, and radial directions, ensuring that it is evenly distributed around the central axis of the support body 10, significantly improving the coaxiality of the two, ensuring that the second air outlet 25 is precisely aligned with the first air outlet 11, and avoiding airflow guidance deviation caused by misalignment. At the same time, the snap-fit ​​cooperation between the arc-shaped plate 23 and the support body 10 simplifies the assembly process, enabling quick installation and disassembly without complex tools, greatly improving production efficiency and maintenance convenience. In addition, the precise cooperation between the limiting port 12 and the snap-fit ​​component 24 can also reduce the gap between two circumferentially adjacent arc-shaped plates 23, enhance the overall sealing of the duct 20, and prevent airflow leakage.

[0114] like Figure 4 and Figure 10 As shown, in some embodiments, each arc plate 23 is provided with two rows of second air outlets 25, the first air outlet 11 and the second air outlet 25 are provided in a one-to-one correspondence, multiple limiting ports 12 are located in the same row, and there are at least two first air outlets 11 between two adjacent limiting ports 12.

[0115] The limiting port 12 provides positioning and assembly for the curved plate 23. The first air outlet 11 has two rows, and the limiting port 12 is located in the same row as one row of the first air outlet 11. For example, in the same row, the limiting port 12-air outlet A-air outlet B-limiting port 12-air outlet A-air outlet B-limiting port 12.... are arranged in a regular pattern, with the limiting port 12 and air outlet A connected. This arrangement can prevent mistaken identification and facilitate quick positioning and alignment of the curved plate 23 with the limiting port 12 during installation.

[0116] The extension direction of the column containing the first air outlet 11 and the limiting port 12 is parallel to the central axis of the support body 10, and the direction of the column of the two columns of the second air outlet 25 of the arc plate 23 is also parallel to the central axis of the support body 10.

[0117] like Figure 6 As shown, the air duct structure according to an embodiment of this application is used for a hair care device, including a support body 10 and an air outlet 20.

[0118] Specifically, the support body 10 has a hollow airflow cavity, and one end of the support body 10 in the extension direction has an air inlet 13. Multiple first air outlets 11 are provided on the side wall of the support body 10. The air outlet duct 20 is arranged around the outer periphery of the support body 10. The air outlet duct 20 includes multiple arc-shaped plates 23 spliced ​​around the central axis of the support body 10. Multiple second air outlets 25 are provided on each arc-shaped plate 23. The air outlet direction of the second air outlet 25 forms a first guiding angle with the outer wall of the air outlet duct 20. The first guiding angle is an acute angle, and the air outlet direction of the second air outlet 25 is tilted and offset towards the end where the air inlet 13 is located, so that the second air outlet 25 guides the airflow discharged from the first air outlet 11 to the surface of the air outlet duct 20 to flow in a spiral shape. The distance between two adjacent second air outlets 25 in each row is L1, and the length of the second air outlet 25 in the extension direction of the arc-shaped plate 23 is L2. L1 and L2 satisfy: 1≤L1 / L2≤2.4.

[0119] It should be noted that the shape, structure and function of the first air outlet 11 and the second air outlet 25 have been discussed in the previous text and will not be repeated here.

[0120] In the above embodiment, the extension direction of the arc plate 23 is the same as the axial direction of the support 10.

[0121] L1 and L2 satisfy the condition: 1 ≤ L1 / L2 ≤ 2.4. This ensures that the airflow coverage areas of adjacent second air outlets 25 do not excessively overlap, preventing excessively strong local wind, while also guaranteeing coverage of all areas to avoid uneven drying and achieving uniform airflow to all parts of the hair. L1 / L2 can be 1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.3, and 2.4, etc. In some embodiments, the length L2 of the second air outlet 25 in the extension direction of the arc-shaped plate 23 is 3mm to 7.5mm, for example, L2 can be 3mm, 3.5mm, 4mm, 4.5mm, 5mm, and 5.5mm, etc.

[0122] like Figures 1-4 As shown, the air duct structure according to an embodiment of this application includes a support body 10 and an air outlet duct 20.

[0123] Specifically, the support body 10 has a hollow airflow cavity, and one end of the support body 10 in the extending direction has an air inlet 13. Multiple first air outlets 11 are provided on the side wall of the support body 10. The air outlet duct 20 is arranged around the outer periphery of the support body 10. The air outlet duct 20 includes multiple arc-shaped plates 23 spliced ​​around the central axis of the support body 10. Each arc-shaped plate 23 is provided with at least one row of second air outlets 25. The air outlet direction of the second air outlet 25 forms a first guiding angle with the outer wall of the air outlet duct 20. The first guiding angle is an acute angle, and the air outlet direction of the second air outlet 25 is tilted and offset towards the end where the air inlet 13 is located, so that the second air outlet 25 guides the airflow discharged from the first air outlet 11 to the surface of the air outlet duct 20 to flow in a spiral shape. The length of the arc-shaped plate 23 in the extending direction of the air outlet duct 20 is L3, and the number of each row of second air outlets 25 is N. L3 and N satisfy: 10mm≤L3 / N≤15mm.

[0124] It should be noted that the shape, structure and function of the first air outlet 11 and the second air outlet 25 have been discussed in the previous text and will not be repeated here.

[0125] In the above embodiment, the extending direction of the arc plate 23 is the same as the extending direction of the air outlet duct 20.

[0126] The length of the arc plate 23 in the extension direction of the air outlet duct 20 is L3, and the number of second air outlets 25 in each row is N. L3 and N satisfy: 10mm≤L3 / N≤15mm. This ratio range can achieve a reasonable distribution of the second air outlets 25 in the axial direction, ensuring that the distribution of each row of second air outlets 25 is neither too dense due to an excessive number, causing excessively strong local wind force or affecting the strength of the arc plate 23 due to the small spacing between adjacent second air outlets 25, nor too large due to an insufficient number, forming a blank area covered by airflow.

[0127] Wherein, L3 / N can be 10mm, 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm, 13.5mm, 14mm, 14.5mm, and 15mm, etc. Preferably, L3 / N is 12.6mm.

[0128] The optimal proportions ensure that each row of second air outlets 25 is evenly distributed axially, effectively connecting the airflow coverage areas of adjacent second air outlets 25. This guarantees that all parts of the hair receive uniform and continuous airflow along the extension direction of the air outlet 20, significantly improving drying efficiency and styling accuracy. Simultaneously, it ensures that the area of ​​the arc-shaped plate 23 between the second air outlets 25 retains sufficient solid structure, enhancing the strength of the arc-shaped plate 23 between the second air outlets 25 and improving the overall durability of the air outlet 20. Furthermore, this proportional range reduces manufacturing difficulty, making it easier to control the spacing and number of second air outlets 25 during mold design, thus improving production yield.

[0129] like Figures 1-4 as well as Figure 6 As shown, the air duct structure according to an embodiment of this application includes a support body 10 and an air outlet duct 20.

[0130] Specifically, the support body 10 has a hollow airflow cavity, and one end of the support body 10 in the extending direction has an air inlet 13. Multiple first air outlets 11 are provided on the side wall of the support body 10. The air outlet duct 20 is arranged around the outer periphery of the support body 10. The air outlet duct 20 includes multiple arc-shaped plates 23 spliced ​​around the central axis of the support body 10. Multiple second air outlets 25 are provided on each arc-shaped plate 23. The air outlet direction of the second air outlet 25 forms a first guiding angle with the outer wall of the air outlet duct 20. The first guiding angle is an acute angle, and the air outlet direction of the second air outlet 25 is tilted and offset towards the end where the air inlet 13 is located, so that the second air outlet 25 guides the airflow discharged from the first air outlet 11 to the surface of the air outlet duct 20 to flow in a spiral shape. The length of the arc-shaped plate 23 in the extending direction of the air outlet duct 20 is L3, and the length of the second air outlet 25 in the extending direction of the arc-shaped plate 23 is L2. L3 and L2 satisfy: 13≤L3 / L2≤17.

[0131] It should be noted that the shape, structure and function of the first air outlet 11 and the second air outlet 25 have been discussed in the previous text and will not be repeated here.

[0132] In the above embodiment, the extending direction of the arc plate 23 is the same as the extending direction of the air outlet duct 20.

[0133] The length of the arc-shaped plate 23 in the extending direction of the air outlet 20 is L3, and the length of the second air outlet 25 in the extending direction of the arc-shaped plate 23 is L2. L3 and L2 satisfy: 13≤L3 / L2≤17, where L3 / L2 can be 13, 13.2, 13.4, 13.6, 13.8, 14, 14.2, 14.4, 14.6, 14.8, 15, 15.2, 15.4, 15.6, 15.8, 16, 16.2, 16.4, 16.6, 16.8, and 17. In a specific embodiment, L3 / L2 is 15.2.

[0134] According to the air duct structure of the embodiment of this application, since the length of the arc plate 23 in the extension direction of the air duct 20 and the length of the second air outlet 25 in the same direction are in a reasonable proportion, the length of each second air outlet 25 is relatively short and the distribution is uniform. When the airflow is affected by a blockage in a certain second air outlet 25, it will only cause a small difference in a local area. Adjacent second air outlets 25 can still form a continuous airflow coverage through reasonable spacing and arrangement, avoiding large areas of airflow blank or unevenness in the extension direction of the entire air duct 20 due to the blockage of a single air outlet. This ensures the continuous stability of airflow during hair care, significantly reduces the impact of blockage on the effect of use, and improves the reliability and practicality of the air duct structure in long-term use.

[0135] like Figures 1-4 as well as Figure 6 As shown, the air duct structure according to an embodiment of this application includes a support body 10 and an air outlet duct 20.

[0136] Specifically, the support body 10 has a hollow airflow cavity, and one end of the support body 10 in the extension direction has an air inlet 13. Multiple first air outlets 11 are provided on the side wall of the support body 10. The air outlet duct 20 is arranged around the outer periphery of the support body 10. The air outlet duct 20 includes multiple arc-shaped plates 23 spliced ​​around the central axis of the support body 10. Multiple second air outlets 25 are provided on each arc-shaped plate 23. The air outlet direction of the second air outlet 25 forms a first guiding angle with the outer wall of the air outlet duct 20. The first guiding angle is an acute angle, and the air outlet direction of the second air outlet 25 is tilted and offset towards the end where the air inlet 13 is located, so that the second air outlet 25 guides the airflow discharged from the first air outlet 11 to the surface of the air outlet duct 20 to flow in a spiral shape. The length of the second air outlet 25 in the extension direction of the arc-shaped plate 23 is L2, and L2 satisfies 3mm≤L2≤7.5mm.

[0137] It should be noted that the shape, structure and function of the first air outlet 11 and the second air outlet 25 have been discussed in the previous text and will not be repeated here.

[0138] L2 satisfies 3mm≤L2≤7.5mm, that is, L2 can be 3mm, 3.2mm, 3.4mm, 3.6mm, 3.8mm, 4mm, 4.2mm, 4.4mm, 4.6mm, 4.8mm, 5mm, 5.2mm, 5.4mm, 5.6mm, 5.8mm, 6mm, 6.2mm, 6.4mm, 6.6mm, 6.8mm, 7mm, 7.2mm, 7.4mm, and 7.5mm.

[0139] In the above embodiment, the extending direction of the arc plate 23 is the same as the extending direction of the air outlet duct 20.

[0140] According to the air duct structure of the embodiment of this application, the length of the second air outlet 25 in the extension direction of the arc plate 23 is set to a relatively short reasonable range, which can ensure that the airflow direction of a single second air outlet 25 is stable and concentrated, avoiding airflow diffusion disorder caused by the lengthening process of the second air outlet 25 or insufficient guidance caused by excessively short length. Moreover, when a second air outlet 25 is blocked, it only affects a small local area. The surrounding second air outlets 25 can still maintain the continuity and uniformity of the overall airflow through reasonable layout, ensuring stable hair care effect and improving the practicality and reliability of the air duct.

[0141] The hair care device according to an embodiment of this application includes the above-described blower structure. The air outlet 25 forms a first guide angle α with the outer wall of the blower 20. The first guide angle is an acute angle, and the air outlet 25 is tilted and offset towards the end where the air inlet 13 is located, so that the second air outlet 25 guides the airflow discharged from the first air outlet 11 to the surface of the blower 20 in a spiral flow.

[0142] The technical and beneficial effects of the hair care device according to the embodiments of this application have been discussed in detail above and will not be repeated here.

[0143] like Figures 12-14 As shown, the mold according to the embodiment of this application, used for processing the arc plate 23 of the above-mentioned wind tunnel structure, includes: a relatively movable first forming mold 40 and a second forming mold 50, and an ejection mechanism.

[0144] Specifically, when the first molding mold 40 and the second molding mold 50 are engaged, they jointly define multiple mold cavities, which are connected by flow channels. An ejection mechanism is disposed on the second molding mold 50, and the ejection mechanism includes multiple ejector rods 60. The ejector rods 60 are used to eject the formed arc-shaped plate 23 from the second molding mold 50 after the first molding mold 40 and the second molding mold 50 are separated. Each mold cavity corresponds to one or more ejector rods 60.

[0145] The first molding die 40 and the second molding die 50 move relative to each other through a guiding mechanism. For example, one of the first molding die 40 and the second molding die 50 is provided with a guide post, and the other is provided with a guide sleeve.

[0146] The ejection mechanism is located at the bottom of the second forming mold 50. The ejection mechanism includes multiple evenly distributed ejection rods 60. The top of the ejection rods 60 can be set on a support plate that matches the outer wall surface of the arc plate 23. This can prevent damage to the arc plate 23 when ejecting it.

[0147] The first molding die 40 and the second molding die 50 can move relative to each other. The first molding die 40 can be driven to move towards the second molding die 50 along the guide mechanism by the first driving device, or the second molding die 50 can be driven to move upward along the guide mechanism until the two are fully engaged. The first driving device can be a servo motor or a hydraulic cylinder.

[0148] According to the mold of this application, the cavity formed when the first molding mold 40 and the second molding mold 50 are engaged allows the arc-shaped plate 23 to be injection molded within the cavity. An ejection mechanism is mounted on the second molding mold 50, which smoothly ejects the formed arc-shaped plate 23 after the first molding mold 40 and the second molding mold 50 separate, significantly shortening the demolding time and improving production efficiency. The mold simplifies the operation process while ensuring machining accuracy.

[0149] In some embodiments, the arc plate 23 is provided with a snap-fit ​​member 24, and each mold cavity corresponds to multiple ejector rods 60. The number of ejector rods 60 is consistent with the number of second air outlets 25 on each arc plate 23. The ejector rod 60 includes a first sub-part 61 and a second sub-part 62 that are slidably connected to each other. The second sub-part 62 is provided with a molding groove 621. The first sub-part 61 and the second sub-part 62 are slidably connected. When the arc plate 23 is injection molded in the mold cavity, the first sub-part 61 and the second sub-part 62 are both located in the mold cavity. The first sub-part 61 abuts against the first molding mold 40, and the end of the second sub-part 62 is spaced apart from the first molding mold 40. During the injection molding process, the first sub-part 61 and the first molding mold 40 jointly form the second air outlet 25. The molding groove 621 on the second sub-part 62 and the protruding structure of the second molding mold 50 together enable the snap-fit ​​part 24 to be injection molded. After the injection molding is completed, the first molding mold 40 and the second molding mold 50 separate along the snap-fit ​​trajectory. The ejector rod 60 pushes the arc plate 23 out of the second molding mold 50. The second sub-part 62 moves further toward the direction closer to the first molding mold 40 so that the first sub-part 61 is disengaged from the arc plate 23. Then, the arc plate 23 is moved away from the second sub-part 62 by a robot or manually, so that the snap-fit ​​part 24 is disengaged from the molding groove 621, achieving complete demolding.

[0150] In some embodiments, the first molding mold 40 and the second molding mold 50 are arranged opposite each other in the horizontal direction and move in the horizontal direction when they move. The molding groove 621 opens upwards, and the robot arm grabs the formed arc plate 23 from above the first molding mold 40 and the second molding mold 50 to transfer it to the unloading production line.

[0151] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms such as “a,” “an,” etc., used herein may also refer to the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated, unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0152] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may only be used to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as a second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments. The above are merely preferred embodiments of the present invention and are not intended to limit the present invention.

Claims

1. A funnel structure for a hair care appliance, characterized by, include: A support body having a hollow airflow cavity, an air inlet at one end of the support body extending in the direction of extension, and a plurality of first air outlets provided on the side wall of the support body; An air outlet is provided on the outer periphery of the support body. The air outlet has multiple second air outlets. The air outlet direction of the second air outlet forms a first guiding angle with the outer wall of the air outlet. The first guiding angle is an acute angle. The air outlet direction of the second air outlet is tilted and offset towards the end where the air inlet is located, so that the second air outlet guides the airflow discharged from the first air outlet to the surface of the air outlet in a spiral flow.

2. The duct structure according to claim 1, wherein The second air outlet has a first guide channel communicating with the outer wall of the air outlet at one end. The bottom of the first guide channel is provided with a first guide surface that arches in the same direction as the outer wall of the air outlet. The flattened shape of the first guide surface is a parallelogram, and the parallelogram has an interior angle that is not 90°.

3. The duct structure of claim 2, wherein The second air outlet corresponds one-to-one with the first air outlet and is eccentrically set, and the eccentric direction of the second air outlet relative to the first air outlet is consistent with the deflection direction of the first guide angle. The flattened area of ​​the first air guide surface is less than or equal to the flattened area of ​​the first air outlet.

4. The duct structure of claim 1, wherein The second air outlet has a second guide channel communicating with the inner wall of the air outlet at one end. The top of the second guide channel is provided with a second guide surface that arches in the same direction as the inner wall of the air outlet. The second guide channel is directly opposite the first air outlet.

5. The duct structure of claim 1, wherein The angle between the air outlet direction of the second air outlet and the circumferential tangent direction of the air outlet is 5° to 25°.

6. The duct structure of claim 1, wherein The air outlet includes multiple arc-shaped plates spliced ​​around the central axis of the support body. The multiple arc-shaped plates form a continuous and smooth arc surface. Each arc-shaped plate is provided with multiple second air outlets. The multiple second air outlets are arranged at intervals along the extension direction of the air outlet, and adjacent columns of second air outlets are staggered along the extension direction of the air outlet.

7. The duct structure of claim 6, wherein The support body is also provided with multiple limiting ports, which are connected to the adjacent first air outlet in the axial direction. The inner side of the arc plate is provided with multiple snap-fit ​​pieces, which are snapped into the limiting ports. Each of the arc-shaped plates is provided with two rows of second air outlets, and the first air outlet and the second air outlet are provided in a one-to-one correspondence. Multiple limiting ports are located in the same row, and there are at least two first air outlets between two adjacent limiting ports.

8. The duct structure according to claim 6 or 7, characterized by The distance between two adjacent second air outlets in each column is L1, and the length of the second air outlet in the extension direction of the arc plate is L2. L1 and L2 satisfy: 1≤L1 / L2≤2.4; and / or The length of the arc-shaped plate in the extending direction of the air outlet is L3, and the number of the second air outlets in each column is N, where L3 and N satisfy: 10mm ≤ L3 / N ≤ 15mm; and / or The arc-shaped plate has a length L3 in the direction of extension of the air outlet, and the second air outlet has a length L2 in the direction of extension of the arc-shaped plate. L3 and L2 satisfy: 13 ≤ L3 / L2 ≤ 17; and / or The length of the second air outlet in the extension direction of the arc-shaped plate is L2, and L2 satisfies 3mm≤L2≤7.5mm.

9. A bellows structure for a hair care appliance, characterized by, include: A support body having a hollow airflow cavity, an air inlet at one end of the support body extending in the direction of extension, and a plurality of first air outlets provided on the side wall of the support body; An air outlet duct is provided around the outer periphery of the support body. The air outlet duct includes multiple arc-shaped plates spliced ​​around the central axis of the support body. Each arc-shaped plate is provided with multiple second air outlets. The distance between two adjacent second air outlets in each column is L1. The length of the second air outlet in the extension direction of the arc-shaped plate is L2. L1 and L2 satisfy: 1≤L1 / L2≤2.

4.

10. A bellows structure for a hair care appliance, characterized by, include: A support body having a hollow airflow cavity, an air inlet at one end of the support body extending in the direction of extension, and a plurality of first air outlets provided on the side wall of the support body; An air outlet duct is provided around the outer periphery of the support body. The air outlet duct includes multiple arc-shaped plates spliced ​​around the central axis of the support body. Each arc-shaped plate is provided with at least one row of second air outlets. The length of the arc-shaped plate in the extension direction of the air outlet duct is L3. The number of second air outlets in each row is N. L3 and N satisfy: 10mm≤L3 / N≤15mm.

11. A bellows structure for a hair care appliance, characterized by, include: A support body having a hollow airflow cavity, an air inlet at one end of the support body extending in the direction of extension, and a plurality of first air outlets provided on the side wall of the support body; An air outlet duct is provided around the outer periphery of the support body. The air outlet duct includes multiple arc-shaped plates spliced ​​around the central axis of the support body. Each arc-shaped plate is provided with multiple second air outlets. The length of the arc-shaped plate in the extension direction of the air outlet duct is L3, and the length of the second air outlet in the extension direction of the arc-shaped plate is L2. L3 and L2 satisfy: 13≤L3 / L2≤17.

12. A bellows structure for a hair care appliance, characterized by, include: A support body having a hollow airflow cavity, an air inlet at one end of the support body extending in the direction of extension, and a plurality of first air outlets provided on the side wall of the support body; An air outlet is provided around the outer periphery of the support body. The air outlet includes multiple arc-shaped plates spliced ​​around the central axis of the support body. Each arc-shaped plate is provided with multiple second air outlets. The length of the second air outlet in the extension direction of the arc-shaped plate is L2, and L2 satisfies 3mm≤L2≤7.5mm.

13. A hair care device, comprising a blower structure as described in any one of claims 1, 9-12, wherein the air outlet direction of the second air outlet forms a first guide angle with the outer wall of the blower, the first guide angle being an acute angle, and the air outlet direction of the second air outlet is tilted and offset toward the end where the air inlet is located, so that the second air outlet guides the airflow discharged from the first air outlet to the surface of the blower in a spiral flow.

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