A hair iron

Abstract

This disclosure provides a hair styling tool, relating to the field of hair care devices. The hair styling tool is provided with two air outlets, a first air outlet and a second air outlet, and a combination structure of a switching component and a drive mechanism, which can switch the connection between the two air outlets and the air duct cavity, connecting the air duct cavity with the lower air outlet to guide air out from the correct air outlet, making it convenient to use and improving the user experience.

Description

Technical Field

[0001] This disclosure relates to the field of hair care devices, and in particular to a hair styling tool. Background Technology

[0002] A hair styling tool is a small personal care appliance used to curl and straighten hair. It typically includes a heating element that comes into direct contact with the hair and an air outlet. The heating element heats and softens the hair, while the air outlet dries and straightens the hair to achieve the desired style.

[0003] However, most existing hair styling tools use unidirectional airflow. When picking up the hair styling tool, you need to make sure that the air outlet is facing downwards before using it, which is inconvenient and reduces the user experience. Utility Model Content

[0004] In view of this, the purpose of this disclosure is to provide a hairstyling tool to improve the technical problem of inconvenience in using existing hairstyling tools.

[0005] To achieve at least one of the above objectives, this disclosure provides the following technical solutions: A hair styling tool is provided, comprising: Two arms that can be opened and closed, the opening and closing ends of the two arms have clamping surfaces arranged opposite to each other, and at least one clamping surface is provided with a heating part for heating hair; The air duct assembly and the fan are provided. The air duct assembly is located inside either arm. The air duct assembly includes an air inlet, an air outlet, and an air duct cavity connecting the air inlet and the air outlet. The fan is located inside the air duct cavity and is configured to draw air in from the air inlet and allow the air to flow through the air duct cavity to the air outlet. The air outlet includes a first air outlet and a second air outlet. The first air outlet and the second air outlet are respectively located on both sides of the heating part along a first direction, which is the direction in which the hair heated by the heating part moves out of the heating part. A switching component is disposed between the air outlet and the air duct cavity; the switching component is activated to switch the first air outlet and the second air outlet to be connected to the air duct cavity.

[0006] In some embodiments, the hair styling tool further includes a drive mechanism and a control unit, the drive mechanism being drivenly connected to the switching component, and the control unit being configured to control the operation of the drive mechanism.

[0007] In some embodiments, the action of the switching component is associated with the direction of gravity during use of the hairstylist to cause airflow to exit from the vent near the hair ends.

[0008] In some embodiments, the switching component includes: A fixed cylinder is fixed inside the arm. The cylinder wall has a first connecting port and a second connecting port that are both connected to the air duct cavity. The first connecting port and the second connecting port correspond one-to-one with the first air outlet and the second air outlet. A rotating cylinder is rotatably fitted onto the outside of a fixed cylinder, and a passage is provided on the cylinder wall of the rotating cylinder; The rotating cylinder is connected to the output end of the drive mechanism and can rotate relative to the fixed cylinder under the drive mechanism, so that the guide port connects the first connecting port and the first air outlet or connects the guide port to the second connecting port and the second air outlet, thereby realizing the switching connection of the first air outlet and the second air outlet to the air duct cavity.

[0009] In some embodiments, a groove is formed at the end of the rotating cylinder away from the air duct cavity, which is recessed toward the air duct cavity; The groove and the inner wall of the arm define the mounting cavity; The drive mechanism is located inside the mounting cavity. The main body of the drive mechanism is fixedly connected to the inner wall of the arm, and the output end of the drive mechanism is connected to the groove of the rotating cylinder.

[0010] In some embodiments, the groove wall is provided with guide ribs on the surface inside the air duct cavity, and / or the groove wall is conical on the surface inside the air duct cavity.

[0011] In some embodiments, the switching component includes: The guide plate has a first air duct opening and a second air duct opening on both sides along the first direction. The first air duct opening and the second air duct opening are both connected to the air duct cavity, and the first air duct opening and the second air duct opening correspond one-to-one with the first air outlet and the second air outlet. The movable baffle is movably attached to the side of the guide plate away from the air duct cavity; Guide components are used to guide the movable baffle to move in a first direction; The transmission component is connected to the output end of the drive mechanism and drives the moving baffle to reciprocate between the first position and the second position; When the movable baffle is in the first position, the movable baffle blocks the connection between the first air duct and the first air outlet, and opens the connection between the second air duct and the second air outlet. When the movable baffle is in the second position, it blocks the connection between the second air duct and the second air outlet, and opens the connection between the first air duct and the first air outlet.

[0012] In some embodiments, the transmission element includes: Gears are connected to the output end of the drive mechanism; A rack extends along a first direction and is disposed on a movable baffle, and the rack meshes with a gear; Driven by the drive mechanism, the gear rotates and drives the rack and the moving baffle to move along the first direction.

[0013] In some embodiments, the transmission element includes: A lead screw is connected to the output end of the drive mechanism, and the lead screw extends along a first direction; The nut is threaded onto the lead screw and is fixedly connected to the movable baffle. Driven by the drive mechanism, the lead screw rotates and drives the nut and the moving baffle to move along the first direction.

[0014] In some embodiments, a first fitting groove is provided on the side of the first air duct opening away from the air duct cavity; A second fitting groove is provided on the side of the second air duct opening away from the air duct cavity; The movable baffle is provided with a first fitting part and a second fitting part on both sides along the first direction; When the movable baffle is in the first position, the first fitting part is embedded in the first fitting groove; When the movable baffle is in the second position, the second fitting part is inserted into the second fitting groove.

[0015] In some embodiments, the switching component includes: The first valve port is connected between the first air outlet and the air duct cavity; The second valve port connects the second air outlet and the air duct cavity; The first valve plate is connected to the output end of the drive mechanism. The first valve plate is rotatably disposed at the first valve port to open or close the first valve port. The second valve plate is connected to the output end of the drive mechanism. The second valve plate is rotatably disposed at the second valve port to open or close the second valve port. Under the drive of the drive mechanism, the positional relationship between the first valve plate and the second valve plate satisfies one of the following conditions: The first valve plate opens the first valve port, and the second valve plate closes the second valve port to connect the first air outlet and the air duct cavity, and to block the connection between the second air outlet and the air duct cavity. The first valve plate closes the first valve port, and the second valve plate opens the second valve port to block the connection between the first air outlet and the air duct cavity, and to open the second air outlet and the air duct cavity.

[0016] In some embodiments, a first limiting portion is provided on each side of the first valve port along the first direction. When the first valve plate closes the first valve port, the two sides of the first valve plate along the first direction abut against the two first limiting portions one by one. One first limiting portion abuts against the surface of the first valve plate facing the air duct cavity, and the other first limiting portion abuts against the surface of the first valve plate away from the air duct cavity. A second limiting part is provided on each side of the second valve port along the first direction. When the second valve plate closes the second valve port, the two sides of the second valve plate along the first direction abut against the two second limiting parts in a corresponding manner. One second limiting part abuts against the surface of the second valve plate facing the air duct cavity, and the other second limiting part abuts against the surface of the second valve plate away from the air duct cavity.

[0017] In some embodiments, the switching component includes: A flow guide cavity is connected between the air outlet and the air duct cavity, and the first air outlet and the second air outlet are respectively placed on both sides of the flow guide cavity along the first direction; The air duct baffle is hinged to the cavity wall on the side of the guide cavity away from the air duct cavity via a shaft; The air duct baffle has a first end and a second end, the first end extends to the junction of the guide cavity and the air duct cavity, and the second end passes through the cavity wall of the guide cavity on the side away from the air duct cavity and extends to the outside of the guide cavity. The second end is connected to the output end of the drive mechanism, and under the drive mechanism, the air duct baffle can swing around the axis to drive the first end to move back and forth between the first station and the second station. When the first end is in the first working position, the air duct baffle blocks the connection between the air duct cavity and the first air outlet, and causes the guide cavity to guide the air duct cavity to the second air outlet; When the first end is in the second working position, the air duct baffle blocks the connection between the air duct cavity and the second air outlet, and causes the guide cavity to guide the air duct cavity to the first air outlet.

[0018] In some embodiments, a first guide wall and a second guide wall are provided opposite to each other along a first direction at the junction of the guide cavity and the air duct cavity; When the first end of the air duct baffle is in the first working position, the air duct baffle is sealed to the first guide wall to block the connection between the air duct cavity and the first air outlet. When the first end of the duct baffle is in the second position, the duct baffle is sealed to the second guide wall to block the connection between the duct cavity and the second air outlet.

[0019] In some embodiments, the cavity wall on the side of the guide cavity away from the air duct cavity is divided into a third guide wall and a fourth guide wall disposed opposite to each other along the first direction; A shaft is provided between the third guide wall and the fourth guide wall; The third guide wall has a first arc-shaped mating surface at one end near the shaft, and the fourth guide wall has a second arc-shaped mating surface at one end near the shaft; The air duct baffle is provided with a shaft connection part, which has a shaft hole and an arc-shaped outer peripheral surface surrounding the shaft hole; The shaft connection part is rotatably sleeved on the shaft through the shaft hole; The arc-shaped outer peripheral surface of the shaft connection part is in contact with the first arc-shaped mating surface and the second arc-shaped mating surface, respectively.

[0020] In some embodiments, one end of the third guide wall extends to the first air outlet, and the other end bends toward the air duct cavity and extends to the shaft; One end of the fourth guide wall extends to the second air outlet, and the other end bends toward the air duct cavity and extends to the shaft.

[0021] In some embodiments, a guide vane assembly is provided in the flow guide cavity, and the guide vane assembly is configured to guide the air in the flow guide cavity into the first air outlet and / or the second air outlet.

[0022] In some embodiments, the guide vane assembly includes a plurality of guide vanes arranged along the extension direction of the guide cavity; The guide vane is an arc-shaped piece that bends and extends from the side of the guide cavity in the first direction toward the air duct cavity; In two adjacent guide vanes of the same guide vane assembly, the guide vane closer to the air duct cavity has a shorter extension length than the guide vane farther from the air duct cavity.

[0023] In some embodiments, the number of guide vane assemblies is two sets, and the two sets of guide vane assemblies are arranged opposite each other along a first direction.

[0024] In some embodiments, the hairstylist also includes: The locking unit is configured to restrict the opening of the two arms, so that the two arms are in a locked state, and to release the opening restriction of the two arms, so that the two arms are in an unlocked state. The third air outlet is located on the outer shell of the arm equipped with the air duct assembly; The hair stylist has a first working mode and a second working mode. When both arms are in the unlocked state, the hair stylist operates in the first working mode, and when both arms are in the locked state, the hair stylist operates in the second working mode. In the first working mode, the control unit controls the drive mechanism to drive the switching component to switch the first air outlet and the second air outlet to connect to the air duct cavity, and to block the connection between the third air outlet and the air duct cavity. In the second operating mode, the control unit controls the drive mechanism to drive the switching component to connect the third air outlet to the air duct cavity, and blocks the connection between the first air outlet and the air duct cavity, as well as the connection between the second air outlet and the air duct cavity.

[0025] In some embodiments, the switching component includes: A fixed cylinder is fixed inside the arm. The cylinder wall has a first connecting port, a second connecting port and a third connecting port that are all connected to the air duct cavity. The first connecting port, the second connecting port and the third connecting port correspond one-to-one with the first air outlet, the second air outlet and the third air outlet. A rotating cylinder is rotatably fitted onto the outside of a fixed cylinder, and a passage is provided on the cylinder wall of the rotating cylinder; The rotating cylinder is connected to the output end of the drive mechanism and can rotate relative to the fixed cylinder under the drive mechanism, so that the guide port connects the first connecting port and the first air outlet, or connects the guide port to the second connecting port and the second air outlet, or connects the guide port to the third connecting port and the third air outlet, thereby realizing the switching connection of the first air outlet, the second air outlet and the third air outlet to the air duct cavity.

[0026] In some embodiments, the number of conductive ports is three, and the three conductive ports are a first conductive port, a second conductive port, and a third conductive port, respectively; The first guide port is used to connect the first connecting port and the first air outlet; The second guide port is used to connect the second connecting port and the second air outlet; The third guide port is used to connect the third connecting port and the third air outlet.

[0027] In some embodiments, the hairstylist also includes: A heating unit is disposed within the air duct cavity. The heating unit is configured to heat the air flowing through the air duct cavity. Along the air flow direction within the air duct cavity, a control unit is disposed upstream of the heating unit.

[0028] In some embodiments, the air duct cavity includes a first air cavity and a second air cavity, wherein the first air cavity includes a first inlet and the second air cavity includes a second inlet; The switching component includes: A flow guide cavity is connected between the air outlet and the air duct cavity, and the first air outlet and the second air outlet are respectively placed on both sides of the flow guide cavity along the first direction; the flow guide cavity includes a first chamber connected to the first air outlet and a second chamber connected to the second air outlet; the first chamber is connected to the first air cavity, and the second chamber is connected to the second air cavity; A blocking plate alternately blocks the first inlet or the second inlet. In the above technical solution, by setting two air outlets, a first air outlet and a second air outlet, during the use of the hairstylist, a switching component connects the air duct cavity to the lower air outlet to guide air out from the correct outlet, preventing discomfort caused by airflow blowing towards the face during hair styling. This structural design allows for easy use in scenarios where the hairstylist can be picked up and used immediately. A drive mechanism drives the switching component to improve product operability. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional structural diagram of a hairstyling tool at a first angle provided in this disclosure, wherein the switching component is the structure of Embodiment 1; Figure 2 This is a three-dimensional structural diagram of a hairstyling tool from a second angle provided in this disclosure, wherein the switching component is the structure of Embodiment 1; Figure 3 This is a front sectional view of a first arm provided in this disclosure, wherein the switching component has the structure of Embodiment 1; Figure 4 This is a left-side sectional view of a first arm provided in this disclosure, wherein the second guide port connects the second connecting port and the second air outlet; Figure 5 The left sectional view of a first arm provided in this disclosure shows that the third guide port connects the third connecting port and the third air outlet; Figure 6 This is a three-dimensional structural diagram of a fixed cylinder provided in this disclosure; Figure 7 This is a three-dimensional structural diagram of a rotating cylinder provided in this disclosure; Figure 8 An exploded view of the structure of a switching component according to Embodiment 2 provided in this disclosure; Figure 9 This is a left view of a switching component provided in this disclosure according to Embodiment 2, wherein the movable baffle is in a first position; Figure 10 This is a top view of a switching component provided in this disclosure according to Embodiment 2, wherein the movable baffle is in a first position; Figure 11 This is a left view of a switching component provided in this disclosure according to Embodiment 2, wherein the movable baffle is in a second position; Figure 12 This is a top view of a switching component provided in this disclosure according to Embodiment 2, wherein the movable baffle is in a second position; Figure 13 An exploded view of the structure of a switching component according to Embodiment 3 provided in this disclosure; Figure 14This is a left view of a switching component provided in this disclosure according to Embodiment 3, wherein the movable baffle is in a first position; Figure 15 This is a top view of a switching component provided in this disclosure according to Embodiment 3, wherein the movable baffle is in a first position; Figure 16 The left view shows a switching component provided in this disclosure according to Embodiment 3, wherein the movable baffle is in the second position; Figure 17 This is a top view of a switching component provided in this disclosure according to Embodiment 3, wherein the movable baffle is in a second position; Figure 18 This is a three-dimensional structural diagram of a switching component according to Embodiment 4 provided in this disclosure; Figure 19 This is a three-dimensional structural diagram of a switching component according to Embodiment 4 provided in this disclosure, wherein the first valve plate and the second valve plate are removed; Figure 20 This is a three-dimensional structural diagram of another hair styling tool provided in this disclosure, wherein the switching component is the structure of Embodiment 5; Figure 21 A top sectional view of the first arm of another hair styling tool provided in this disclosure; Figure 22 for Figure 21 A magnified structural diagram of part A in the middle; Figure 23 This is a schematic diagram of the structure of a transmission component provided in this disclosure; Figure 24 This is a three-dimensional structural diagram of a locking unit assembled on a second arm, as provided in this disclosure. Figure 25 for Figure 24 A magnified structural diagram of part B in the middle; Figure 26 This is a three-dimensional structural diagram of a push block provided in this disclosure; Figure 27 This is a schematic diagram illustrating a possible interaction between the locking unit and the micro switch provided in this disclosure, wherein the locking unit is in the unlocked position; Figure 28 This is a schematic diagram illustrating a possible interaction between the locking unit and the micro switch provided in this disclosure, wherein the locking unit is in the locked position; Figure 29 This is a schematic diagram of a switching component provided in this disclosure, which is an embodiment six.

[0031] The attached figures are labeled as follows: 100 - First arm; 110 - Air inlet; 121 - First air outlet; 122 - Second air outlet; 123 - Third air outlet; 130 - Air duct cavity; 1301 - First air cavity; 13011 - First inlet; 1302 - Second air cavity; 13021 - Second inlet; 200 - Second arm, 210 - Slide groove, 211 - First slot, 212 - Second slot; 10-Heating section; 20-Fan; 30-Switch component, 311-Fixed cylinder, 3111-First connecting port, 3112-Second connecting port, 3113-Third connecting port, 312-Rotating cylinder, 3121-First guiding port, 3122-Second guiding port, 3123-Third guiding port, 3124-Groove. 321-Guide plate, 3211-First air duct opening, 3212-Second air duct opening, 3213-First fitting groove, 3214-Second fitting groove, 322-Moving baffle, 3221-First fitting part, 3222-Second fitting part, 323-Guide component, 3231-Slider, 3232-Matching groove, 324-Transmission component, 3241-Gear, 3242-Rack, 3243-Lead screw, 3244-Nut 331-First valve port, 3311-First limiting part, 332-Second valve port, 3321-Second limiting part, 333-First valve plate, 334-Second valve plate 341-Guide cavity, 3411-First guide wall, 3412-Second guide wall, 3413-Third guide wall, 34131-First arc-shaped mating surface, 3414-Fourth guide wall, 34141-Second arc-shaped mating surface, 3415-Guide plate assembly, 342-Air duct baffle, 3421-First end, 3422-Second end, 3423-Shaft connection part, 343-Shaft, 344-Transmission assembly, 3441-Base, 34411-Sliding groove, 3442-Threaded rod, 3443-Sliding block; 40 - Drive mechanism; 50 - Control Unit; 60-Locking unit, 61-Push block, 611-Trigger part, 612-Locking hook, 62-Hook groove; 70 - Micro switch; 71 - Identification lever; 80-Heating unit; 90-Blocking plate. Detailed Implementation

[0032] The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present disclosure will become clearer and more apparent.

[0033] Unless otherwise defined, all technical and scientific terms used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs; the terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to limit this disclosure; the terms “comprising” and “having” and any variations thereof in the specification and the foregoing description of this disclosure are intended to cover non-exclusive inclusion.

[0034] The term "embodiment" as used in this disclosure means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this disclosure. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this disclosure can be combined with other embodiments.

[0035] The specific term "exemplary" used in this disclosure means "serving as an example, embodiment, or illustration." Any embodiment illustrated as "exemplary" is not necessarily to be construed as superior or better than other embodiments. Although various aspects of embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated otherwise.

[0036] In the description of this disclosure, the technical terms “first,” “second,” “third,” etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary or secondary relationship of the indicated technical features.

[0037] In the description of this disclosure, the technical term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0038] In the description of this disclosure, unless otherwise expressly specified and limited, the technical terms "installation," "connection," "joining," "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 or an electrical 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 disclosure based on the specific circumstances.

[0039] In the description of this disclosure, the technical terms "upper", "lower", "inner", "outer", "front", "back", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship under the working state of this disclosure. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or component 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 disclosure.

[0040] In the description of this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this disclosure, "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering.

[0042] In the description of this disclosure, "multiple" means two or more (including two), unless otherwise expressly and specifically limited.

[0043] In the description of this disclosure, the same reference numerals denote the same components, and for brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, and other dimensions of various components in the embodiments of this disclosure shown in the drawings, as well as the overall thickness, length, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this disclosure.

[0044] As part of the inventive concept of this disclosure, before describing the embodiments of this disclosure, it is necessary to analyze the reasons for the inconvenience of using hair styling tools in related technologies, and obtain the technical solutions of the embodiments of this disclosure through reasonable analysis.

[0045] In related technologies, the development of hair styling tools has evolved from primitive tools to metal tools, electric tools, and then to modern, environmentally friendly tools. With the advancement and innovation of technology, especially the invention of the generator, electric hair styling tools began to emerge. These electric tools have made hair trimming and styling more convenient and faster. Hair dryers, curling irons, and straighteners have become essential hair styling tools, not only better meeting people's needs for hairstyle styling but also being safer and more convenient. Hair styling tools, also known as hair straighteners, hair straighteners, or hair straighteners, rely on the core technology of heating a heating element with an electric current, which then conducts the heat to an aluminum or ceramic plate. Currently, hair styling tools typically include a heating element that comes into direct contact with the hair and an air outlet. The heating element heats and softens the hair, while the air outlet dries and straightens the hair to achieve styling. However, most existing hair styling tools use unidirectional airflow. When picking up the hair styling tool, one must first confirm that the air outlet is facing downwards before use, which is inconvenient and reduces the user experience.

[0046] To address this, the present disclosure provides a hairstyling tool with a first air outlet and a second air outlet, and a combination structure of a switching component and a drive mechanism that allows switching the connection between the two air outlets and the air duct cavity, connecting the air duct cavity to the lower air outlet to guide air out from the correct air outlet, making it convenient to use and improving the user experience.

[0047] Furthermore, to enhance the product's ease of operation and intelligence, the hair styling tool further includes a control unit, under which the drive mechanism operates.

[0048] The technical solutions of the embodiments of this disclosure are described in detail below with reference to the accompanying drawings. The technical features involved in the different embodiments of this disclosure described below can be combined with each other as long as they do not conflict with each other. Example 1

[0049] An embodiment of this disclosure provides a hairstyling tool, such as Figures 1 to 28As shown, the hairstyling tool includes two arms, a heating element 10, an air duct assembly, a fan 20, a switching component 30, a drive mechanism 40, a status recognition unit, and a control unit 50. The heating element 10 is disposed on the clamping surfaces of the two arms and is used to heat the hair. The air duct assembly has an air duct cavity 130, an air inlet 110, and two air outlets. The fan 20, in conjunction with the air inlet 110, draws air into the air duct cavity 130 and blows it out from the corresponding air outlets to dry and straighten the hair. The switching component 30, in conjunction with the drive mechanism 40, switches the connection between the two air outlets and the air duct cavity 130. The status recognition unit, in conjunction with the control unit 50, automatically identifies the status information of the hairstyling tool and feeds this information back to the control unit. The control unit, based on the status information, controls the drive mechanism 40 to activate the switching component 30, connecting the air duct cavity 130 to the lower air outlet to guide air out from the correct outlet. This design allows for easy use by simply picking up the hairstyling tool.

[0050] More specifically, the status information is the relative position status information of the two air outlets.

[0051] Regarding the two arms, as Figure 1 , Figure 2 and Figure 20 As shown, the two arms are a first arm 100 and a second arm 200 that can open and close to each other; specifically, one end of each arm is hinged by a pivot, and the other end can rotate around the pivot to realize the opening and closing action between the first arm 100 and the second arm 200.

[0052] Furthermore, the two arms have clamping surfaces arranged opposite each other, and the two clamping surfaces are designed near the end where the two arms can be opened and closed.

[0053] Regarding the heating element 10, such as Figure 3 , Figure 20 As shown, the heating part 10 is disposed on the clamping surface. The heating part 10 is mainly used to heat the hair in order to shape the hair.

[0054] Optionally, the heating section 10 is generally in the shape of a strip plate.

[0055] Optionally, there are two heating parts 10, which are arranged opposite to each other and are respectively connected to the two clamping surfaces of the two arms.

[0056] For example, a specific structure of the heating part 10 may be: the heating part 10 includes a heating element and a heating plate. The heating element can be heated by an electric current. The heating plate is wrapped around the heating element, and the heat from the heating element can be conducted to the heating plate. The heating plate can clamp the hair and heat the hair for shaping. Wherein, if the shaping is straight hair, the surface of the heating plate clamping the hair can be designed as a flat surface; if the shaping is curly hair, the surface of the heating plate clamping the hair can be designed with corresponding concave and convex shapes.

[0057] Alternatively, the heating element may be a metal ceramic heater (MCH), a positive temperature coefficient thermistor (PTC), or a heating wire.

[0058] Alternatively, the heating plate can be an aluminum plate or a ceramic plate.

[0059] Regarding air duct components, such as Figures 3 to 5 As shown, the air duct assembly is disposed inside either arm, that is, the air duct assembly can be disposed on either the first arm 100 or the second arm 200. For ease of description, the following description takes the air duct assembly disposed inside the first arm 100 as an example.

[0060] Furthermore, the air duct assembly includes an air inlet 110, an air outlet, and an air duct cavity 130 connecting the air inlet 110 and the air outlet.

[0061] Optionally, the air inlet 110 and the air outlet are located at opposite ends of the first arm 100 in its extension direction, and the air outlet is located at the opening end of the first arm 100.

[0062] Optionally, the air inlet 110 can be a plurality of small holes arranged on the outer peripheral wall at the end of the first arm 100; wherein, the small holes allow air to enter into the air duct cavity 130, and at the same time the small holes also have a filtering function to prevent some impurities in the air from being drawn into the air duct cavity 130 along with the air.

[0063] Furthermore, the air outlet includes a first air outlet 121 and a second air outlet 122. The first air outlet 121 and the second air outlet 122 are respectively disposed on both sides of the heating part 10 along a first direction, which is the direction in which the hair heated by the heating part 10 moves out of the heating part 10.

[0064] Optionally, the first air outlet 121 and the second air outlet 122 are both generally in the shape of strip holes. The extension direction of these two air outlets is consistent with the extension direction of the strip plate-shaped heating part 10, and the length of these two air outlets in their extension direction is approximately equal to the length of the heating part 10 in its extension direction.

[0065] Optionally, the air duct cavity 130 is a cavity formed inside the first arm 100, and the air duct cavity 130 extends in the same direction as the first arm 100.

[0066] Optionally, the air duct cavity 130 is provided with two connecting channels at one end near the air outlet. These two connecting channels connect the air duct cavity 130 to the first air outlet 121 and the air duct cavity 130 to the second air outlet 122, respectively, so that the air in the air duct cavity 130 can be guided to the first air outlet 121 and the second air outlet 122 and blown out.

[0067] Regarding fan 20, such as Figure 3 and Figure 21 As shown, the fan 20 is disposed in the air duct cavity 130. The fan 20 is configured to introduce air from the air inlet 110 and make the air flow through the air duct cavity 130 to the air outlet.

[0068] Optionally, fan 20 is an axial flow fan.

[0069] Regarding switching component 30, such as Figures 3 to 5 As shown, the switching component 30 is disposed between the air outlet and the air duct cavity 130. The switching component 30 can be operated to switch the first air outlet 121 and the second air outlet 122 to be connected to the air duct cavity 130.

[0070] For example, when the switching component 30 performs a switching action, it can connect the first air outlet 121 to the air duct cavity 130 and disconnect the second air outlet 122 from the air duct cavity 130; when the switching component 30 performs a second switching action, it can disconnect the first air outlet 121 from the air duct cavity 130 and connect the second air outlet 122 to the air duct cavity 130.

[0071] Regarding the drive mechanism 40, such as Figure 3 As shown, the drive mechanism 40 serves as a power source and is mainly used to drive the switching component 30 to perform actions in order to complete the switching connection between the two air outlets and the air duct cavity 130.

[0072] Alternatively, the drive mechanism 40 can be a motor; for example, a stepper motor.

[0073] Regarding the status recognition unit (not shown in the figure) and the control unit 50, the status recognition unit is used to identify the relative position status of the first air outlet 121 and the second air outlet 122, and feeds back the status information to the control unit 50. The control unit 50 controls the drive mechanism 40 to drive the switching component 30 to operate according to the status information.

[0074] The status information includes first status information and second status information. The first status information is that the position of the first air outlet 121 is lower than the position of the second air outlet 122, and the second status information is that the position of the first air outlet 121 is higher than the position of the second air outlet 122.

[0075] When the status recognition unit identifies the first status information, the control unit 50 controls the drive mechanism 40 to drive the switching component 30 to connect the first air outlet 121 and the air duct cavity 130, and blocks the connection between the second air outlet 122 and the air duct cavity 130.

[0076] When the status recognition unit identifies the second status information, the control unit 50 controls the drive mechanism 40 to drive the switching component 30 to connect the second air outlet 122 and the air duct cavity 130, and blocks the connection between the first air outlet 121 and the air duct cavity 130.

[0077] Understandably, the status information is the movement direction information of the hair stylist, and the movement direction information is the information of the hair stylist moving from the hair root to the hair end. When the status recognition unit recognizes the movement direction information, the control unit controls the drive mechanism to drive the switching component to guide the ventilation duct cavity and the air outlet near the hair end.

[0078] Understandably, the status information refers to the tilting information of the hairstylist. The tilting information includes a first tilting information and a second tilting information relative to the vertical state of the hairstylist. When the status recognition unit identifies the first tilting information, the control unit controls the drive mechanism to drive the switching component to connect the first air outlet and the air duct cavity, and blocks the connection between the second air outlet and the air duct cavity. When the status recognition unit identifies the second tilting information, the control unit controls the drive mechanism to drive the switching component to connect the second air outlet and the air duct cavity, and blocks the connection between the first air outlet and the air duct cavity.

[0079] For example, the state recognition unit is an accelerometer. The accelerometer can detect the acceleration change of the hair stylist in three-dimensional space. It is mainly used to sense the direction of gravity (to determine the horizontal / vertical posture) and motion state. That is, the accelerometer can identify the state of the hair stylist based on the acceleration generated when the hair stylist is tilted left and right, and then determine the relative position state of the first air outlet 121 and the second air outlet 122.

[0080] The specific explanation regarding the ability of accelerometers to identify state information is as follows: The principle of an accelerometer is based on Newton's second law. It calculates the linear acceleration of an object by detecting the inertial force generated by a mass under acceleration.

[0081] The working mechanism of the accelerometer is as follows: The accelerometer detects three-dimensional acceleration through a MEMS structure (such as a mass block + spring), with static gravitational acceleration being the main component of its output. For example, when the hair stylist is horizontally placed, the Z-axis 343 output is approximately 1g (the direction of gravity is perpendicular to the plane of the clamp), while the X / Y-axis 343 is close to 0; when the hair stylist is held vertically, the X or Y-axis 343 output is approximately 1g, while the Z-axis 343 is close to 0. This distribution of the gravitational component directly reflects the posture of the hair stylist, therefore the accelerometer can directly calculate the angle between the gravity vector and the coordinate axis 343 (e.g., angle <30° in horizontal state, angle >60° in vertical state), thereby determining the state of the hair stylist.

[0082] Optionally, the accelerometer can be a capacitive accelerometer, a piezoelectric accelerometer, or a piezoresistive accelerometer. A capacitive accelerometer utilizes the change in capacitance caused by the displacement of a mass block, converting the change into an electrical signal to measure acceleration; examples include MEMS accelerometers. A piezoelectric accelerometer utilizes the property of piezoelectric materials (such as quartz crystals) generating charge when subjected to force, making it suitable for dynamic acceleration measurement. A piezoresistive accelerometer utilizes the change in resistance of a piezoresistive element when a mass block deforms under force, converting the change into an electrical signal via a Wheatstone bridge.

[0083] It is worth noting that the core function of an accelerometer is to measure the translational acceleration of an object, which can measure linear motion, but cannot directly obtain rotational information. The principle of an electronic gyroscope is based on the Coriolis force or conservation of angular momentum. It measures the rotational angular velocity by detecting the displacement of a mass block when an object rotates (e.g., a MEMS gyroscope utilizes the Coriolis force to deflect a vibrating mass block). The core function of an electronic gyroscope is to measure the rotational angular velocity of an object. An electronic gyroscope can detect the rotational angular velocity of a hairstylist and use it to determine the dynamic process of actions such as flipping, thus compensating for the shortcomings of an accelerometer. Therefore, to improve the ability to recognize the state changes of the hairstylist in three-dimensional space, an electronic gyroscope can be used in conjunction with an accelerometer, i.e., the accelerometer and the electronic gyroscope together form a state recognition unit. This solution can improve the intelligence of hairstylist state recognition. Combined with filtering algorithms and logical judgments, it can ensure the accuracy and robustness of switching between the two air outlets and the air duct cavity 130.

[0084] Optionally, the accelerometer and the electronic gyroscope can be integrated onto the circuit board of the control unit 50.

[0085] It should be noted that since both the accelerometer and the electronic gyroscope are existing products, their specific structures and detailed working mechanisms will not be described in detail here.

[0086] For example, the control unit 50 includes a microcontroller, a drive circuit, a power management module, a human-machine interface, and a safety protection circuit.

[0087] The microcontroller, as the core module of the control unit 50, receives sensor data, performs logical judgments, and outputs control commands. For example, it reads the status information fed back by the accelerometer and the electronic gyroscope to determine the relative position of the first air outlet 121 and the second air outlet 122 in the hair dryer, and outputs control commands to control the switching connection between the two air outlets and the air duct cavity 130; it also reads the feedback data from the temperature sensor and outputs control commands to adjust the power of the heating unit 10; and it reads the input commands from the human-machine interface and outputs control commands to turn the heating unit 10 on and off and adjust its power, as well as to turn the fan 20 on and off and adjust its speed.

[0088] The drive circuit may include a drive mechanism 40, a heater 10, and a fan 20. The drive mechanism 40 can drive the switching component 30 according to instructions from the microcontroller to achieve switching communication between the two air outlets and the air duct cavity 130. The heater 10 can control the opening and closing of the heater 10 and adjust its power according to instructions from the microcontroller. The fan 20 can control the opening and closing of the fan 20 and adjust its power according to instructions from the microcontroller.

[0089] The main function of the power management module is to convert the input power (such as 220V AC or battery) into the voltage required by each module (such as 5V, 3.3V) and optimize power consumption.

[0090] The human-machine interface includes an input section and an output section. The input section may include buttons (for temperature adjustment, power on / off, and mode switching) and a touch screen (for displaying temperature, operating mode, etc.); the output section may include LED indicators (for displaying operating status and temperature level) and a buzzer (for operation prompts or fault alarms).

[0091] The safety protection circuit can achieve the following functions: 1) Overheat protection: when the temperature exceeds the threshold, the microcontroller will forcibly cut off the heating power supply; 2) Timeout shutdown: when the hair styling tool is not used for a long time (such as 30 minutes), it will automatically cut off the power to prevent fire risk; 3) Anti-dry burning design: combined with temperature sensor and motion sensor, it can judge abnormal working state (such as dry burning).

[0092] In this embodiment, by setting two air outlets, a first air outlet 121 and a second air outlet 122, and using a status recognition unit to identify the relative position of the two air outlets, the air duct can be automatically switched. This connects the air duct cavity 130 to the lower air outlet, guiding air to blow out from the correct outlet. This ensures that the air blown from the outlet is always directed towards the hair tips, generating the Coanda effect to dry and smooth the hair. This structural design allows for easy use, allowing users to simply pick up the hairstylist. Furthermore, the status recognition unit, in conjunction with the control unit 50, can automatically identify the relative position of the two air outlets and automatically switch the air duct based on the status information, improving the product's intelligence.

[0093] It should be noted that, in addition to the method described above of using a status recognition unit to identify the relative position of the two air outlets and achieve automatic duct switching, control commands can also be directly issued through the input section (buttons and touch screen) of the control unit 50 to control the drive mechanism 40 to drive the switching component 30 to connect the first air outlet 121 and the duct cavity 130 and block the connection between the second air outlet 122 and the duct cavity 130, or to control the drive mechanism 40 to drive the switching component 30 to connect the second air outlet 122 and the duct cavity 130 and block the connection between the first air outlet 121 and the duct cavity 130. With this structural design, the duct switching can be manually controlled via the input section, accurately switching the duct cavity 130 to the lower air outlet to guide air out from the correct outlet, which is convenient to use. Moreover, compared to the automatic duct switching method, the manual control method is simpler in structure and lower in cost. Understandably, the drive mechanism can also be a non-electrically driven mechanism, i.e., a non-electrically powered mechanical structure. In this case, the control unit applies force to the drive mechanism through mechanical structures such as buttons and knobs, causing it to drive the switching component to operate. Furthermore, the sensing of the direction of gravity can be achieved through electronic components (such as gravity sensors); or it can be achieved by using physical mechanical structures based on the gravity characteristics of the object itself; thus, the operation of the switching component can be correlated with the direction of gravity.

[0094] In this disclosure, the switching component 30, in conjunction with the drive mechanism 40, can achieve switching and connection between the two air outlets and the air duct cavity 130. To achieve the above function, there are various implementation schemes for the specific structure of the switching component 30 and the cooperation relationship between the switching component 30 and the drive mechanism 40. The relevant implementation schemes will be described in detail below.

[0095] Implementation Method 1

[0096] like Figures 3 to 7 As shown, the switching assembly 30 includes a fixed cylinder 311 and a rotating cylinder 312.

[0097] In this embodiment, the fixing cylinder 311 is fixed inside the opening and closing end of the first arm 100. At least one end of the fixing cylinder 311 has an opening. The inner cavity of the fixing cylinder 311 is part of the air duct cavity 130. It can communicate with another part of the air duct cavity 130 through the opening on the fixing cylinder 311. The cylinder wall of the fixing cylinder 311 is provided with a first connecting port 3111 and a second connecting port 3112. The first connecting port 3111 and the second connecting port 3112 correspond one-to-one with the first air outlet 121 and the second air outlet 122, so that the first air outlet 121 and the second air outlet 122 can communicate with the air duct cavity 130.

[0098] Optionally, both the first connecting port 3111 and the second connecting port 3112 are generally in the shape of strip holes, so that they can be more closely matched and correspond one-to-one with the first air outlet 121 and the second air outlet 122.

[0099] Optionally, the fixing cylinder 311 is integrally formed with the first arm 100; or, the fixing cylinder 311 is connected to the inside of the first arm 100 by means of plug-in connection, threaded connection or welding.

[0100] In this embodiment, one end of the rotating cylinder 312 is open and the other end is closed, and the rotating cylinder 312 is rotatably sleeved on the outside of the fixed cylinder 311.

[0101] Specifically, an annular cavity is formed inside the opening and closing end of the first arm 100 and on the outer periphery of the fixed cylinder 311. The rotating cylinder 312 is placed inside the annular cavity, and the rotating cylinder 312 is sleeved on the fixed cylinder 311 with its open end. The closed end of the rotating cylinder 312 corresponds to the end of the fixed cylinder 311 that is away from the air duct cavity 130.

[0102] A guide port is provided on the cylinder wall of the rotating cylinder 312. The function of the guide port is to switch the connection between the first connecting port 3111 and the first air outlet 121, and to switch the connection between the second connecting port 3112 and the second air outlet 122.

[0103] Optionally, the shape of the guide port is adapted to the shape of the first connecting port 3111 and / or the second connecting port 3112 so that air can be more smoothly introduced into the corresponding air outlet.

[0104] Optionally, the number of ports can be one or two.

[0105] When there is only one connection port, the connection port can connect the first connection port 3111 to the first air outlet 121 or connect the second connection port 3112 to the second air outlet 122.

[0106] When there are two connecting ports, one of the two connecting ports is used to connect the first connecting port 3111 and the first air outlet 121, and the other is used to connect the second connecting port 3112 and the second air outlet 122. The design of using two connecting ports can speed up the rotation speed of the rotating drum 312 during the switching process, reduce the action path, save the switching action time, and improve the switching operation speed.

[0107] When switching, the rotating cylinder 312 is connected to the output end of the drive mechanism 40. Under the drive of the drive mechanism 40, the rotating cylinder 312 can rotate relative to the fixed cylinder 311, so that the guide port connects the first connecting port 3111 and the first air outlet 121 or connects the guide port to the second connecting port 3112 and the second air outlet 122, thereby realizing the switching connection of the first air outlet 121 and the second air outlet 122 to the air duct cavity 130.

[0108] Furthermore, an inner cavity is formed inside the opening and closing end of the first arm 100, which can accommodate the drive mechanism 40. Specifically, a groove 3124 is formed at the end of the rotating cylinder 312 away from the air duct cavity 130, which is recessed towards the air duct cavity 130, that is, a groove 3124 is provided at the closed end of the rotating cylinder 312; the groove 3124 and the inner wall of the first arm 100 together define a mounting cavity; the drive mechanism 40 is located in the mounting cavity, and the main body of the drive mechanism 40 is fixedly connected to the inner wall of the first arm 100, and the output end of the drive mechanism 40 is connected to the groove 3124 of the rotating cylinder 312.

[0109] Optionally, the drive mechanism 40 is a motor, the motor housing is fixedly connected to the inner wall of the first arm 100, and the motor output shaft 343 extends into the groove 3124 of the rotating cylinder 312 and is fixedly connected to the groove wall of the groove 3124. Driven by the motor, the rotating cylinder 312 can rotate together with the output shaft 343, that is, the rotating cylinder 312 rotates around the fixed cylinder 311 in the annular cavity, so as to drive the guide port to connect the first connecting port 3111 with the first air outlet 121 or connect the second connecting port 3112 with the second air outlet 122.

[0110] In the above scheme, a groove 3124 for accommodating the drive mechanism 40 is provided at the closed end of the rotating cylinder 312, and the groove 3124 can be recessed into the inner cavity of the fixed cylinder 311; by adopting this structural design, the length and volume of the hair styling machine can be shortened, and the compactness of the whole machine can be improved.

[0111] Meanwhile, considering that the designed groove structure protrudes from the inner cavity of the fixed cylinder 311, and the protruding part of the groove structure is in the airflow path, it may affect the process of air entering the corresponding air outlet from the inner cavity of the fixed cylinder 311 through the two connecting ports. For example, the airflow entering the fixed cylinder 311 may collide with the groove structure, generating turbulence, thus producing noise and causing losses in air volume and air speed. Therefore, the structure of the groove 3124 needs to be improved to mitigate the above-mentioned drawbacks. The relevant solutions are as follows: the groove wall of the groove 3124 is provided with guide ribs on the surface of the air duct cavity 130 (the inner cavity of the fixed cylinder 311), and / or, the surface of the groove wall of the groove 3124 in the air duct cavity 130 (the inner cavity of the fixed cylinder 311) is conical.

[0112] In the above scheme, for the groove structure, the use of guide ribs and / or conical design can guide and divert the air in the inner cavity of the fixed cylinder 311 to improve the turbulence and allow the air to smoothly enter the corresponding air outlet through the corresponding connecting port and guide port.

[0113] Implementation Method 2

[0114] like Figures 8 to 12 As shown, the switching component 30 includes a guide plate 321, a movable baffle 322, a guide member 323, and a transmission member 324.

[0115] In this embodiment, the guide plate 321 is provided with a first air duct opening 3211 and a second air duct opening 3212 on both sides along the first direction. Both the first air duct opening 3211 and the second air duct opening 3212 are connected to the air duct cavity 130, and the first air duct opening 3211 and the second air duct opening 3212 correspond one-to-one with the first air outlet 121 and the second air outlet 122. The first direction is the direction in which the hair heated by the heating unit 10 moves out of the heating unit 10.

[0116] Alternatively, the guide plate 321 may be part of the cavity wall of the air duct cavity 130.

[0117] Alternatively, the guide plate 321 can be a flat plate or a curved plate with an arc.

[0118] Optionally, both the first air duct opening 3211 and the second air duct opening 3212 are generally strip-shaped holes, so that they can be matched more closely to correspond one-to-one with the first air outlet 121 and the second air outlet 122, so that air can be more smoothly introduced into the corresponding air outlet.

[0119] In this embodiment, the movable baffle 322 is movably attached to the side of the guide plate 321 away from the air duct cavity 130.

[0120] Specifically, the shape of the movable baffle 322 is adapted to the shape of the guide plate 321. When the guide plate 321 is a flat plate, the movable baffle 322 is also a flat plate, so that the movable baffle 322 can fit against the guide plate 321 and can move relative to the guide plate 321; similarly, when the guide plate 321 is a curved plate, the movable baffle 322 is also a curved plate, and the curvature of the movable baffle 322 is consistent with that of the guide plate 321, so that the movable baffle 322 can fit against the guide plate 321 and can move relative to the guide plate 321.

[0121] In this embodiment, the guide member 323 is used to guide the movable baffle 322 to move along the first direction to ensure the stability of the movable baffle 322 during the movement process.

[0122] For example, the guide 323 is a matching slider 3231 and a mating groove 3232. One of the slider 3231 and the mating groove 3232 is disposed on the side of the guide plate 321 facing the movable baffle 322, and the other is disposed on the side of the movable baffle 322 facing the guide plate 321. The slider 3231 is restricted to sliding back and forth in the first direction only within the mating groove 3232, thereby guiding the movable baffle 322 to conform to the guide plate 321 and move back and forth in the first direction.

[0123] Of course, the mating structure of slider 3231 and mating groove 3232 can also be set between the moving baffle 322 and the inner cavity wall of the first arm 100, that is, the mating structure of slider 3231 and mating groove 3232 is set on the side of moving baffle 322 away from guide plate 321.

[0124] It should be understood that the guide member 323 is not limited to the aforementioned mating structure of slider 3231 and mating groove 3232. Any structure capable of restricting the movement of the movable baffle 322 along the first direction is acceptable. For example, the guide member 323 can also be a mating structure of a guide rod and a guide block sleeved on the guide rod. The guide rod is fixed to the guide plate 321, and the guide block is fixed to the movable baffle 322. The guide block can only reciprocate along the guide rod in the first direction to restrict the movement of the movable baffle 322 along the first direction.

[0125] In this embodiment, the transmission member 324 is connected to the output end of the drive mechanism 40 and drives the movable baffle 322 to reciprocate between the first position and the second position.

[0126] Specifically, when the movable baffle 322 is in the first position, it blocks the connection between the first air duct opening 3211 and the first air outlet 121, and opens the connection between the second air duct opening 3212 and the second air outlet 122. When the movable baffle 322 is in the second position, it blocks the connection between the second air duct opening 3212 and the second air outlet 122, and opens the connection between the first air duct opening 3211 and the first air outlet 121.

[0127] Optionally, the drive mechanism 40 is a motor.

[0128] For example, a specific structure of the transmission member 324 is as follows: the transmission member 324 includes a gear 3241 and a rack 3242. The gear 3241 is connected to the output end of the drive mechanism 40, and the rack 3242 extends along the first direction and is disposed on the movable baffle 322. The rack 3242 meshes with the gear 3241.

[0129] During the switching action, the drive mechanism 40 drives the gear 3241 to rotate, the gear 3241 drives the rack 3242 and the moving baffle 322 to move, and under the guidance of the guide member 323, the moving baffle 322 is made to move back and forth along the first direction against the guide plate 321, thereby making the first air duct opening 3211 connect the first air outlet 121 and the air duct cavity 130, or making the second air duct opening 3212 connect the second air outlet 122 and the air duct cavity 130, so as to realize the switching connection of the first air outlet 121 and the second air outlet 122 to the air duct cavity 130.

[0130] In the above scheme, compared with the cylindrical structure composed of a fixed cylinder 311 and a rotating cylinder 312 in the first embodiment, the switching component 30 in this embodiment can have more structural designs, such as a flat structure, which has the characteristics of occupying less space and making the product more compact, so that the switching component 30 is not limited to a cylindrical structure, thus avoiding an increase in the size of the product.

[0131] Furthermore, a first fitting groove 3213 is provided on the side of the first air duct opening 3211 away from the air duct cavity 130, and a second fitting groove 3214 is provided on the side of the second air duct opening 3212 away from the air duct cavity 130. A first fitting part 3221 and a second fitting part 3222 are respectively provided on both sides of the movable baffle 322 along the first direction.

[0132] When the movable baffle 322 is in the first position, the first fitting part 3221 is embedded in the first fitting groove 3213; when the movable baffle 322 is in the second position, the second fitting part 3222 is embedded in the second fitting groove 3214.

[0133] In the above solution, the sealing performance of the movable baffle 322 in blocking the connection between the first air duct opening 3211 and the first air outlet 121 can be improved by the embedded cooperation of the first fitting part 3221 and the first fitting groove 3213; the sealing performance of the movable baffle 322 in blocking the connection between the second air duct opening 3212 and the second air outlet 122 can be improved by the embedded cooperation of the second fitting part 3222 and the second fitting groove 3214.

[0134] Implementation Method 3

[0135] like Figures 13 to 17 As shown, this embodiment is similar to the second embodiment. The main difference lies in the specific structure of the transmission component 324. To avoid redundancy, only the specific structure of the transmission component 324 and its structural relationship with related components will be described in detail here: One specific structure of the transmission component 324 is as follows: the transmission component 324 includes a lead screw 3243 and a nut 3244. The lead screw 3243 is connected to the output end of the drive mechanism 40 and extends along a first direction. The nut 3244 is threadedly connected to the lead screw 3243 and is fixedly connected to the movable baffle 322. The first direction is the direction in which the hair heated by the heating unit 10 moves out of the heating unit 10.

[0136] During the switching action, the drive mechanism 40 drives the lead screw 3243 to rotate. The lead screw 3243 drives the nut 3244 and the moving baffle 322 to move. Under the guidance of the guide member 323, the moving baffle 322 moves back and forth along the first direction against the guide plate 321, thereby connecting the first air duct opening 3211 to the first air outlet 121 and the air duct cavity 130, or connecting the second air duct opening 3212 to the second air outlet 122 and the air duct cavity 130, so as to realize the switching connection of the first air outlet 121 and the second air outlet 122 to the air duct cavity 130.

[0137] In the above scheme, compared with the cylindrical structure composed of a fixed cylinder 311 and a rotating cylinder 312 in the first embodiment, the switching component 30 in this embodiment can have more structural designs, such as a flat structure, which has the characteristics of occupying less space and making the product more compact, so that the switching component 30 is not limited to a cylindrical structure, thus avoiding an increase in the size of the product.

[0138] Implementation Method 4

[0139] like Figure 18 and Figure 19 As shown, the switching component 30 includes a first valve port 331, a second valve port 332, a first valve plate 333, and a second valve plate 334.

[0140] In this embodiment, the first valve port 331 is connected between the first air outlet 121 and the air duct cavity 130, and the second valve port 332 is connected between the second air outlet 122 and the air duct cavity 130.

[0141] Optionally, both the first valve port 331 and the second valve port 332 are generally in the shape of strip holes, so that they can be more matched to correspond one-to-one with the first air outlet 121 and the second air outlet 122, so that air can be more smoothly introduced into the corresponding air outlet.

[0142] In this embodiment, the first valve plate 333 is connected to the output end of the drive mechanism 40, and the first valve plate 333 is rotatably disposed at the first valve port 331 to open or close the first valve port 331; the second valve plate 334 is connected to the output end of the drive mechanism 40, and the second valve plate 334 is rotatably disposed at the second valve port 332 to open or close the second valve port 332.

[0143] Under the drive of the drive mechanism 40, the positional relationship between the first valve plate 333 and the second valve plate 334 satisfies one of the following conditions: 1) The first valve plate 333 opens the first valve port 331 and the second valve plate 334 closes the second valve port 332 to connect the first air outlet 121 and the air duct cavity 130 and block the connection between the second air outlet 122 and the air duct cavity 130; 2) The first valve plate 333 closes the first valve port 331 and the second valve plate 334 opens the second valve port 332 to block the connection between the first air outlet 121 and the air duct cavity 130 and connect the second air outlet 122 and the air duct cavity 130.

[0144] Optionally, the drive mechanism 40 is a motor.

[0145] Optionally, the number of drive mechanisms 40 can be one or two. When there is only one drive mechanism 40, the output end of the drive mechanism 40 can jointly control the opening and closing of the first valve plate 333 and the second valve plate 334 through the transmission mechanism; when there are two drive mechanisms 40, the two drive mechanisms 40 drive the first valve plate 333 and the second valve plate 334 respectively, that is, the first valve plate 333 is equipped with one of the drive mechanisms 40 to realize the opening and closing of the first valve port 331, and the second valve plate 334 is equipped with the other drive mechanism 40 to realize the opening and closing of the second valve port 332.

[0146] This embodiment uses two drive mechanisms 40 as an example to explain the operating principle of the switching component 30, and defines the two drive mechanisms 40 as the first drive mechanism 40 and the second drive mechanism 40. Specifically, when it is necessary to connect the first air outlet 121 and the air duct cavity 130 and block the connection between the second air outlet 122 and the air duct cavity 130, the first drive mechanism 40 drives the first valve plate 333 to rotate and open the first valve port 331, while the second drive mechanism 40 drives the second valve plate 334 to rotate and close the second valve port 332; when it is necessary to block the connection between the first air outlet 121 and the air duct cavity 130 and connect the second air outlet 122 and the air duct cavity 130, the first drive mechanism 40 drives the first valve plate 333 to rotate and close the first valve port 331, while the second drive mechanism 40 drives the second valve plate 334 to rotate and open the second valve port 332. Based on the above principle, the first air outlet 121 and the second air outlet 122 can be switched to connect to the air duct cavity 130.

[0147] In the above scheme, compared with the cylindrical structure composed of a fixed cylinder 311 and a rotating cylinder 312 in Embodiment 1, the switching component 30 in this embodiment can have more structural designs, such as a flat structure, which has the characteristics of occupying less space and making the product more compact. This allows the switching component 30 to not be limited to a cylindrical structure, thus avoiding an increase in the product volume. Compared with the switching components 30 in Embodiments 2 and 3, the switching component 30 in this embodiment can be configured with a corresponding drive mechanism 40 for the first valve plate 333 and the second valve plate 334 respectively. This structural design can, on the one hand, directly transmit the power of the drive mechanism 40 to the first valve plate 333 or the second valve plate 334, making the action of the first valve plate 333 or the second valve plate 334 more sensitive. On the other hand, it eliminates the need to set a transmission component 324 between the drive mechanism 40 and the first valve plate 333 (or the second valve plate 334), making the product structure simpler.

[0148] Furthermore, a first limiting part 3311 is provided on each of the two sides of the first valve port 331 along the first direction. When the first valve plate 333 closes the first valve port 331, the two sides of the first valve plate 333 abut against the two first limiting parts 3311 respectively along the first direction. One first limiting part 3311 abuts against the surface of the first valve plate 333 facing the air duct cavity 130, and the other first limiting part 3311 abuts against the surface of the first valve plate 333 away from the air duct cavity 130. Herein, the first direction is the direction in which the hair heated by the heating part 10 moves out of the heating part 10.

[0149] For example, the first limiting portion 3311 is a groove formed at the edge of the first valve port 331. One first limiting portion 3311 is recessed in the direction toward the air duct cavity 130, and the other first limiting portion 3311 is recessed in the direction away from the air duct cavity 130.

[0150] Similarly, a second limiting part 3321 is provided on each side of the second valve port 332 along the first direction. When the second valve plate 334 closes the second valve port 332, the two sides of the second valve plate 334 along the first direction abut against the two second limiting parts 3321 respectively. One second limiting part 3321 abuts against the surface of the second valve plate 334 facing the air duct cavity 130, and the other second limiting part 3321 abuts against the surface of the second valve plate 334 away from the air duct cavity 130.

[0151] Optionally, the second limiting portion 3321 is a groove formed at the edge of the first valve port 331. One second limiting portion 3321 is recessed in the direction toward the air duct cavity 130, and the other second limiting portion 3321 is recessed in the direction away from the air duct cavity 130.

[0152] In the above solution, by providing a first limiting part 3311 on each side of the first valve port 331, which can abut against the first valve plate 333 in the closed state, the first valve plate 333 is limited to the closed position, and the sealing performance between the first valve plate 333 and the first valve port 331 in the closed state is improved. Similarly, by providing a second limiting part 3321 on each side of the second valve port 332, which can abut against the second valve plate 334 in the closed state, the second valve plate 334 is limited to the closed position, and the sealing performance between the second valve plate 334 and the second valve port 332 in the closed state is improved.

[0153] Implementation Method 5

[0154] like Figures 20 to 23 As shown, the switching component 30 includes a flow guide cavity 341 and an air duct baffle 342.

[0155] In this embodiment, the flow guiding cavity 341 is connected between the air outlet and the air duct cavity 130, and the first air outlet 121 and the second air outlet 122 are respectively placed on both sides of the flow guiding cavity 341 along the first direction.

[0156] For example, the flow guide cavity 341 is formed inside the opening and closing end of the first arm 100, and the flow guide cavity 341 is provided with an opening on the side near the air duct cavity 130 to connect the flow guide cavity 341 and the air duct cavity 130.

[0157] Optionally, the extension direction of the flow guide cavity 341 is consistent with the extension direction of the two air outlets, and the length of the flow guide cavity 341 in its extension direction is approximately equal to the length of the two air outlets in their respective extension directions.

[0158] In this embodiment, the air duct baffle 342 is hinged to the cavity wall of the guide cavity 341 on the side away from the air duct cavity 130 via a shaft 343; the air duct baffle 342 has a first end 3421 and a second end 3422 opposite to each other, the first end 3421 extends to the junction of the guide cavity 341 and the air duct cavity 130, and the second end 3422 passes through the cavity wall of the guide cavity 341 on the side away from the air duct cavity 130 and extends to the outside of the guide cavity 341.

[0159] The second end 3422 is connected to the output end of the drive mechanism 40, and under the drive of the drive mechanism 40, the air duct baffle 342 can swing around the axis 343, so as to drive the first end 3421 to move back and forth between the first station and the second station.

[0160] Specifically, when the first end 3421 is in the first working position, the duct baffle 342 blocks the connection between the duct cavity 130 and the first air outlet 121, and the guide cavity 341 guides the duct cavity 130 to the second air outlet 122; when the first end 3421 is in the second working position, the duct baffle 342 blocks the connection between the duct cavity 130 and the second air outlet 122, and the guide cavity 341 guides the duct cavity 130 to the first air outlet 121.

[0161] Optionally, the drive mechanism 40 is a motor, and a transmission component 344 is designed between the motor and the second end 3422 of the air duct baffle 342 to convert the rotational motion output by the motor into linear reciprocating motion and drive the air duct baffle 342 to swing around the axis 343.

[0162] For example, one possible structural relationship between the transmission assembly 344, the motor, and the air duct baffle 342 is as follows: the transmission assembly 344 includes a base 3441, a threaded rod 3442, and a sliding block 3443. The base 3441 is fixed relative to the motor housing on the side of the guide cavity 341 away from the air duct cavity 130. A sliding groove 34411 is formed on the base 3441. The sliding block 3443 is confined within the sliding groove 34411 and can reciprocate along the extending direction of the sliding groove 34411. A threaded hole is provided on 443, and it is threadedly connected to the threaded rod 3442 through the threaded hole. The extension direction of the threaded rod 3442 is consistent with the extension direction of the sliding groove 34411 and can extend into the sliding groove 34411. One end of the threaded rod 3442 is rotatably connected to the base 3441, and the other end is coaxially connected to the output shaft 343 of the motor. Under the drive of the motor, the threaded rod 3442 rotates and can drive the sliding block 3443 to make linear reciprocating motion along the sliding groove 34411. The second end 3422 of the air duct baffle 342 forms a U-shaped opening. The U-shaped opening fits onto the structure of the sliding block 3443 protruding from the sliding groove 34411, so that while the sliding block 3443 makes linear reciprocating motion in the sliding groove 34411, the sliding block 3443 also slides relative to the U-shaped opening, thereby driving the air duct baffle 342 to swing around the axis 343.

[0163] In the above scheme, compared with the cylindrical structure composed of a fixed cylinder 311 and a rotating cylinder 312 in Embodiment 1, the switching component 30 in this embodiment can have more structural designs, such as a flat structure, which has the advantages of occupying less space and making the product more compact. This means that the switching component 30 is not limited to a cylindrical structure, thus avoiding an increase in the product's volume. Compared with the switching components 30 in Embodiments 2 to 4, the switching component 30 in this embodiment uses the swinging of the air duct baffle 342 to switch the connection between the two air outlets and the air duct cavity 130. The action is more sensitive and the switching speed is faster. Moreover, the switching component 30 in this embodiment also has the characteristics of reasonable layout and simple structure.

[0164] Furthermore, at the junction of the flow guide cavity 341 and the air duct cavity 130, a first flow guide wall 3411 and a second flow guide wall 3412 are provided opposite to each other along a first direction; the first direction is the direction in which the hair heated by the heating part 10 moves out of the heating part 10.

[0165] Specifically, when the first end 3421 of the duct baffle 342 is in the first working position, the duct baffle 342 is sealed to the first guide wall 3411 to block the connection between the duct cavity 130 and the first air outlet 121; when the first end 3421 of the duct baffle 342 is in the second working position, the duct baffle 342 is sealed to the second guide wall 3412 to block the connection between the duct cavity 130 and the second air outlet 122.

[0166] Optionally, the space between the first guide wall 3411 and the second guide wall 3412 forms an opening between the guide cavity 341 and the air duct cavity 130.

[0167] Optionally, receiving grooves are provided on opposite sides of the first guide wall 3411 and the second guide wall 3412. When the first end 3421 of the air duct baffle 342 is in the first position or the second position, the first end 3421 of the air duct baffle 342 can abut against the corresponding receiving groove to improve the sealing between the air duct baffle 342 and the first guide wall 3411 or the second guide wall 3412.

[0168] In the above scheme, by setting the first guide wall 3411 and the second guide wall 3412, on the one hand, the air in the air duct cavity 130 can be smoothly guided into the guide cavity 341; on the other hand, the two guide walls can reduce the opening size between the guide cavity 341 and the air duct cavity 130, so that the air duct baffle 342 can cooperate with the two guide walls more quickly, thereby improving the switching speed between the two air outlets and the air duct cavity 130.

[0169] Furthermore, the cavity wall of the guide cavity 341 on the side away from the air duct cavity 130 is divided into a third guide wall 3413 and a fourth guide wall 3414 arranged opposite each other along the first direction; a shaft 343 is arranged between the third guide wall 3413 and the fourth guide wall 3414; a first arc-shaped mating surface 34131 is provided at the end of the third guide wall 3413 near the shaft 343, and a second arc-shaped mating surface 34141 is provided at the end of the fourth guide wall 3414 near the shaft 343; correspondingly, a shaft connecting part 3423 is provided on the air duct baffle 342, and the shaft connecting part 3423 forms a shaft hole and an arc-shaped outer peripheral surface surrounding the shaft hole. The shaft connecting part 3423 is rotatably fitted onto the shaft 343 through the shaft hole; the arc-shaped outer peripheral surface of the shaft connecting part 3423 is in contact with the first arc-shaped mating surface 34131 and the second arc-shaped mating surface 34141 respectively.

[0170] In the above scheme, the air duct baffle 342 is hinged in the guide cavity 341 by providing a shaft hole on its shaft connection part 3423 and connecting it with the shaft 343, and by providing an arc-shaped outer peripheral surface on the shaft connection part 3423 and fitting it with the first arc-shaped mating surface 34131, and ensuring the sealing of the hinge.

[0171] For example, one end of the third guide wall 3413 extends to the first air outlet 121, and the other end bends toward the air duct cavity 130 and extends to the shaft 343; one end of the fourth guide wall 3414 extends to the second air outlet 122, and the other end bends toward the air duct cavity 130 and extends to the shaft 343.

[0172] In the above scheme, by setting the cavity wall of the guide cavity 341 away from the air duct cavity 130 as the third guide wall 3413 and the fourth guide wall 3414, the air in the guide cavity 341 can be guided to enter the first air outlet 121 or the second air outlet 122 more smoothly.

[0173] Furthermore, a guide vane assembly 3415 is provided inside the flow guide cavity 341, and the guide vane assembly 3415 is configured to guide the air inside the flow guide cavity 341 into the first air outlet 121 and / or the second air outlet 122.

[0174] For example, the guide vane assembly 3415 includes a plurality of guide vanes arranged along the extension direction of the guide cavity 341; the guide vane is an arc-shaped piece that bends and extends from the side of the guide cavity 341 in a first direction toward the air duct cavity 130; in two adjacent guide vanes of the same guide vane assembly 3415, the extension length of the guide vane closer to the air duct cavity 130 is less than the extension length of the guide vane farther away from the air duct cavity 130.

[0175] Optionally, the number of guide vane assemblies 3415 is two sets, and the two sets of guide vane assemblies 3415 are arranged opposite to each other along the first direction.

[0176] In the above scheme, by setting multiple guide vanes, the air in the guide cavity 341 can be more evenly guided into the first air outlet 121 or the second air outlet 122.

[0177] Implementation Method Six

[0178] like Figure 29 As shown, the air duct cavity 130 includes a first air cavity 1301 communicating with the first cavity and a second air cavity 1302 communicating with the second cavity. The first air cavity 1301 includes a first inlet 13011 and the second air cavity 1302 includes a second inlet 13022.

[0179] The switching component includes: a flow guide cavity, which is connected between the air outlet and the air duct cavity, and the first air outlet 121 and the second air outlet 122 are respectively placed on both sides of the flow guide cavity along the first direction; the flow guide cavity includes a first chamber connected to the first air outlet 121 and a second chamber connected to the second air outlet 122; the first chamber is connected to the first air chamber 1301 and the second chamber is connected to the second air chamber 1301; it also includes a blocking plate 90, which alternately blocks the first inlet 13011 or the second inlet 13022.

[0180] More specifically, the number of sealing plates 90 can be one or two, with one being preferred.

[0181] When there are two sealing plates 90, both sealing plates initially block the first inlet 13011 and the second inlet 13021. Then, depending on the state of the hairstylist during use, one sealing plate is selectively opened to connect either the first inlet 13011 or the second inlet 13021 to the air outlet. Alternatively, when there are two sealing plates, both are initially open. Then, depending on the state of the hairstylist during use, one sealing plate is selectively closed to block either the first inlet 13011 or the second inlet 13021, thus connecting either the first or second inlet to the air outlet.

[0182] Furthermore, the opening and closing positions and structure of the sealing plate were designed (see Appendix). Figure 29 This allows the sealing plate and the hair styling tool to be associated with each other in terms of gravity direction during use, so that the first or second inlet can be blocked under the action of the sealing plate's own gravity. Example 2

[0183] like Figures 1 to 7 as well as Figures 24 to 28As shown, this embodiment is similar to the scheme of Embodiment 1, with the main differences being: 1. the addition of a hair dryer function; 2. the addition of a locking unit 60 for restricting the opening and closing of the two arms; 3. the addition of a position recognition unit for identifying the state of the locking unit 60; and 4. a different structure from the switching component 30 in Embodiment 1. To avoid redundancy, only the above-mentioned differences and the related structures and functions will be specifically described here: The hair styling tool also includes a third air outlet 123 and a locking unit 60.

[0184] In this embodiment, as Figure 4 and Figure 5 As shown, the third air outlet 123, together with the first air outlet 121 and the second air outlet 122, forms the air outlet of the hair dryer. The three air outlets can be switched and connected to the air duct cavity 130 with the cooperation of the drive mechanism 40 and the switching component 30. Unlike the first air outlet 121 and the second air outlet 122, the main function of the third air outlet 123 is to guide air out of the air duct cavity 130 when using the hair dryer function, so as to realize the hair dryer function.

[0185] For example, the third air outlet 123 is provided on the housing of the arm with the air duct assembly, that is, the third air outlet 123 is provided on the housing of the first arm 100.

[0186] Optionally, the third air outlet 123 is located on the side of the first arm 100 away from the second arm 200. This structural design can reduce the obstruction of the third air outlet 123 by the second arm 200, making the air blown out by the third air outlet 123 more unobstructed and convenient to use.

[0187] In this embodiment, as Figure 1 and Figure 20 As shown, the locking unit 60 is configured to restrict the opening of the two arms, so that the two arms are in a locked state, and to release the opening restriction of the two arms, so that the two arms are in an unlocked state.

[0188] The hair styling tool has two working modes: a first working mode (straightening mode) and a second working mode (drying mode). Based on the locking and unlocking functions of the locking unit 60 on the two arms, the hair styling tool can switch between the two working modes. Specifically, when both arms are unlocked, the hair styling tool operates in the first working mode; when both arms are locked, the hair styling tool operates in the second working mode.

[0189] In the first operating mode, the status recognition unit operates, identifying the relative position of the first air outlet 121 and the second air outlet 122 and feeding the status information back to the control unit 50. The control unit 50, based on the status information, controls the drive mechanism 40 to activate the switching component 30, switching the connection between the first air outlet 121 and the second air outlet 122 and the air duct cavity 130, and blocking the connection between the third air outlet 123 and the air duct cavity 130. This operating mode can be used to heat and shape hair.

[0190] In the second operating mode, the status recognition unit is not working. The control unit 50 controls the drive mechanism 40 to drive the switching component 30 to connect the third air outlet 123 to the air duct cavity 130, and blocks the connection between the first air outlet 121 and the air duct cavity 130, as well as the connection between the second air outlet 122 and the air duct cavity 130. This operating mode can be used to realize the function of a hair dryer.

[0191] In the above scheme, the locking unit 60 keeps both arms in the unlocked state, allowing the hairstylist to operate in the first working mode, where it can heat and shape the hair. Simultaneously, the status recognition unit identifies the relative position of the first air outlet 121 and the second air outlet 122 (or the direction of movement of the hairstylist relative to the hair, the tilting information of the hairstylist relative to its vertical position, etc.), automatically switching the air duct and connecting the air duct cavity 130 to the lower air outlet to guide air out from the correct outlet, ensuring that the air blown from the outlet always faces the hair tips, generating the Coanda effect to dry and smooth the hair. The locking unit 60 also locks both arms in the second working mode, allowing the hairstylist to operate in the second working mode. In this mode, the switching component 30 connects only the third air outlet 123 to the air duct cavity 130, enabling hair drying and realizing the function of a hair dryer.

[0192] Furthermore, by locking the two arms in the unlocked state using the locking unit 60, the switching component 30 can be triggered to switch between connecting to the air duct cavity 130 only between the first air outlet 121 and the second air outlet 122, thus preventing the third air outlet 123 from connecting to the air duct cavity 130 and affecting the hair styling function. By locking the two arms in the locked state using the locking unit 60, the state recognition unit can be triggered to deactivate, thus preventing the other two air outlets besides the third air outlet 123 from connecting to the air duct cavity 130 when using the hair dryer function, thereby affecting the hair dryer function.

[0193] In this embodiment, the hair styling tool further includes a position recognition unit. The position recognition unit is configured to recognize the position of the locking unit 60 and feed the position information back to the control unit 50. The control unit 50 controls the hair styling tool to switch between a first working mode and a second working mode based on the position information. The position information includes the locked position and the unlocked position of the locking unit 60. When the locking unit 60 is in the locked position, both arms are in a locked state, and when the locking unit 60 is in the unlocked position, both arms are in an unlocked state.

[0194] Furthermore, such as Figure 27 and Figure 28 As shown, the position recognition unit is a micro switch 70, and the micro switch 70 is provided with a movable and resettable recognition rod 71; the locking unit 60 includes a push block 61, and the push block 61 is provided with a trigger part 611, which works in conjunction with the recognition rod 71; the push block 61 is slidably disposed in the slide groove 210 of the housing of any arm, and the slide groove 210 is provided with a first slot 211 and a second slot 212; when the push block 61 slides into the first slot 211, the push block 61 is locked in the unlocked position, and when the push block 61 slides into the second slot 212, the push block 61 is locked in the locked position.

[0195] When the push block 61 is in one of the unlocked or locked positions, the trigger unit 611 presses the identification rod 71 to move, triggering the micro switch 70 to identify the position of the push block 61 and feed back the corresponding position information to the control unit 50; when the push block 61 is in the other of the unlocked or locked positions, the trigger unit 611 does not press the identification rod 71, the identification rod 71 is in the initial position, triggering the micro switch 70 to identify the position of the push block 61 and feed back the corresponding position information to the control unit 50.

[0196] For example, when the push block 61 is in the unlocked position, the trigger part 611 presses the recognition rod 71 to move, the micro switch 70 recognizes that both arms are in the unlocked state and feeds this information back to the control unit 50, and the control unit 50 controls the hair styling tool to work in the first working mode; when the push block 61 is in the locked position, the trigger part 611 does not press the recognition rod 71, the recognition rod 71 is in the initial position, the micro switch 70 recognizes that both arms are in the locked state and feeds this information back to the control unit 50, and the control unit 50 controls the hair styling tool to work in the second working mode.

[0197] For example, the micro switch 70 is a spring-reset micro switch 70, mainly including a base, a recognition lever 71, a return spring, a moving contact, a stationary contact, and a circuit. The recognition lever 71 is usually columnar or lever-shaped and hinged to the base, and can move under the pressure of the trigger part 611; the return spring is usually a compression spring or torsion spring, installed between the base and the recognition lever 71, and is used to push the recognition lever 71 back to the initial position when the external force is removed; the moving contact is linked to the recognition lever 71, and the stationary contact is fixed to the base and cooperates with the moving contact to realize the switching of the circuit.

[0198] The operating principle of the spring-reset micro switch 70 can be divided into a triggering stage and a reset stage, as follows: 1. Triggering stage: The triggering part 611 moves with the pushing block 61 and presses the identification rod 71, causing the identification rod 71 to move against the elastic force of the reset spring, and driving the moving contact to move, so that the moving contact contacts the stationary contact, thus connecting the circuit. At this time, the micro switch 70 recognizes that both arms are in the unlocked state and feeds this information back to the control unit 50. The control unit 50 controls the hair styling tool to work in the first working mode. 2. Reset stage: The triggering part 611 moves with the pushing block 61 and disengages from the identification rod 71. The identification rod 71 returns to its initial position under the action of the reset spring, and drives the moving contact to separate from the stationary contact, thus cutting off the circuit. At this time, the micro switch 70 recognizes that both arms are in the locked state and feeds this information back to the control unit 50. The control unit 50 controls the hair styling tool to work in the second working mode.

[0199] Among them, the spring-reset micro switch 70 realizes the cycle of "trigger-action-automatic reset" through the mechanical principle of "spring energy storage-release", and has the characteristics of compact structure and sensitive response.

[0200] For example, such as Figure 1 , Figure 3 as well as Figures 24 to 26 As shown, the locking unit 60 includes a push block 61 and a hook groove 62. The push block 61 is disposed on one of the two arms, and the hook groove 62 is disposed on the other arm. A locking hook 612 is provided on the push block 61. When the push block 61 slides into the first slot 211, the push block 61 is locked in the unlocked position, and the locking hook 612 is separated from the hook groove 62, so that both arms are in the unlocked state. When the push block 61 slides into the second slot 212, the push block 61 is locked in the locked position, and the locking hook 612 is engaged with the hook groove 62 and locked together, so that both arms are in the locked state.

[0201] Optionally, the trigger part 611 may be provided on the lock hook 612.

[0202] In the above scheme, by setting a position recognition unit and cooperating with the control unit 50, the position status of the locking unit 60 can be detected, and the automatic switching between the two working modes of the hair styling tool can be realized.

[0203] In this embodiment, the hair styling tool includes a switching component. This switching component is similar to the one in Embodiment 1, with the main difference being the addition of a third connecting port 3113, which is aligned with the third air outlet 123. This allows the third connecting port 3113 to connect with the third air outlet 123 via a guide port on the rotating cylinder 312 when the switching component 30 performs its switching action, thus enabling communication between the third air outlet 123 and the air duct cavity 130. To avoid redundancy, only the aforementioned difference and its related structures and functions will be specifically described here. like Figures 3 to 7 As shown, the switching assembly 30 includes a fixed cylinder 311 and a rotating cylinder 312. The fixed cylinder 311 is fixed inside the arm, and its wall has a first connecting port 3111, a second connecting port 3112, and a third connecting port 3113, all of which communicate with the air duct cavity 130. The first connecting port 3111, the second connecting port 3112, and the third connecting port 3113 correspond one-to-one with the first air outlet 121, the second air outlet 122, and the third air outlet 123. The rotating cylinder 312 is rotatably sleeved outside the fixed cylinder 311, and its wall has a conductive channel. The rotating cylinder 312 is connected to the output end of the drive mechanism 40 and can rotate relative to the fixed cylinder 311 under the drive of the drive mechanism 40, so that the guide port connects the first connecting port 3111 and the first air outlet 121, or connects the second connecting port 3112 and the second air outlet 122, or connects the third connecting port 3113 and the third air outlet 123, so that the first air outlet 121, the second air outlet 122 and the third air outlet 123 can be switched to connect to the air duct cavity 130.

[0204] Furthermore, there are three connecting ports, namely the first connecting port 3121, the second connecting port 3122, and the third connecting port 3123; the first connecting port 3121 is used to connect the first connecting port 3111 and the first air outlet 121; the second connecting port 3122 is used to connect the second connecting port 3112 and the second air outlet 122; and the third connecting port 3123 is used to connect the third connecting port 3113 and the third air outlet 123.

[0205] In the above scheme, the design of three guide ports can accelerate the rotation speed of the rotating cylinder 312 during the switching process, reduce the action path, save the switching action time, and improve the switching operation speed.

[0206] In this embodiment, as Figure 3 and Figure 21 As shown, the hair styling tool also includes a heating unit 80, which is disposed within the air duct cavity 130 and is configured to heat the air flowing through the air duct cavity 130.

[0207] The heating unit 80 is electrically connected to the control unit 50. The control unit 50 can read the feedback data from the temperature sensor and the input commands from the human-machine interface, and output control commands to turn the heating unit 80 on and off and adjust the power of the heating unit 80.

[0208] The functional logic of the heating unit 80 is as follows: Joule heat is generated by the current flowing through the resistor, and the heat is carried away by the airflow blown out by the fan 20 to form hot air; the heating power is determined by the resistance value and voltage (power P=U² / R), and the temperature is controlled by adjusting the voltage or resistance (such as segmented switching of the heating wire).

[0209] Optionally, the structure of the heating unit 80 can be: 1. Nickel-chromium alloy wire (such as Ni80Cr20), wound into a spiral or corrugated shape, wrapped around a high-temperature resistant ceramic frame or mica sheet to form a dense heating area; it has the characteristics of stable resistance, high temperature resistance (up to 800℃+), strong oxidation resistance, and good heating uniformity. 2. PTC ceramic heating element (barium titanate-based ceramic composite material), which is made of ceramic sheet and electrode layer laminated and sintered, and is mostly plate-shaped or honeycomb-shaped, and can be directly embedded in the air duct; it has the characteristics of automatic temperature control (resistance increases sharply when the temperature exceeds the threshold, limiting power), high safety, and high thermal efficiency (nearly 100%). 3. Metal foil heating element (ultra-thin metal foil, such as aluminum foil), which uses an etching process to form a circuit pattern on the metal foil and is attached to an insulating substrate (such as PI film), with a thickness of only 0.1-0.5mm; it has the characteristics of extremely fast heating speed (second-level temperature rise) and thin and light size, and can be integrated into a compact air duct design.

[0210] In the above solution, by setting the heating unit 80, the air flowing through the air duct cavity 130 can be heated so that the air blown out from the air outlet can be at a suitable temperature to meet the functional requirements such as hair drying.

[0211] Furthermore, such as Figure 3 and Figure 21 As shown, along the airflow direction within the air duct cavity 130, the control unit 50 is located upstream of the heating unit 80.

[0212] Specifically, the layout of the control unit 50 and the heating unit 80 can include the following situations: 1. The control unit 50 is located between the air inlet 110 and the fan 20, and the heating unit 80 is located between the fan 20 and the air outlet.

[0213] 2. Both the control unit 50 and the heating unit 80 are located between the air inlet 110 and the fan 20, with the heating unit 80 being closer to the fan 20.

[0214] 3. Both the control unit 50 and the heating unit 80 are located between the fan 20 and the air outlet, with the control unit 50 being closer to the fan 20.

[0215] In the above scheme, the control unit 50 is positioned upstream of the heating unit 80 in the air flow path within the air duct cavity 130. On the one hand, this can prevent the heated air from flowing through the control unit 50 and damaging the electronic control components on the control unit 50. On the other hand, it can allow unheated air to flow through the control unit 50, and the lower temperature air can carry away the heat emitted by the control unit 50 to cool the control unit 50 and keep it at a suitable operating temperature.

[0216] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and not to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure, and they should all be covered within the scope of the claims and specification of this disclosure. This disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A hair styling tool, characterized in that, include: Two arms that can be opened and closed, the opening and closing ends of the two arms having clamping surfaces arranged opposite each other, and at least one of the clamping surfaces is provided with a heating part for heating hair; A duct assembly and a fan, wherein the duct assembly is disposed inside any of the arms, the duct assembly includes an air inlet, an air outlet and a duct cavity communicating between the air inlet and the air outlet, the fan is disposed in the duct cavity and the fan is configured to introduce air from the air inlet and cause the air to flow through the duct cavity to the air outlet. The air outlet includes a first air outlet and a second air outlet, which are respectively located on both sides of the heating part along a first direction, the first direction being the direction in which the hair heated by the heating part moves out of the heating part. A switching component is disposed between the air outlet and the air duct cavity; the switching component is activated to switch the first air outlet and the second air outlet to be connected to the air duct cavity.

2. The hair styling tool according to claim 1, characterized in that, The hair styling tool also includes a drive mechanism and a control unit, the drive mechanism being drively connected to the switching component, and the control unit being configured to control the operation of the drive mechanism.

3. The hair styling tool according to claim 1, characterized in that, The action of the switching component is related to the direction of gravity during the use of the hairstylist so that airflow is discharged from the air outlet near the hair ends.

4. The hair styling tool according to claim 2, characterized in that, The switching component includes: A fixed cylinder is fixed inside the arm. The fixed cylinder has a first connecting port and a second connecting port that are both connected to the air duct cavity. The first connecting port and the second connecting port correspond one-to-one with the first air outlet and the second air outlet. A rotating cylinder is rotatably fitted outside the fixed cylinder, and a through-hole is provided on the cylinder wall of the rotating cylinder; The rotating cylinder is connected to the output end of the driving mechanism and can rotate relative to the fixed cylinder under the drive of the driving mechanism, so that the guide port connects the first connecting port and the first air outlet or connects the guide port to the second connecting port and the second air outlet, thereby realizing the switching connection of the first air outlet and the second air outlet to the air duct cavity.

5. The hair styling tool according to claim 4, characterized in that, The end of the rotating cylinder away from the air duct cavity has a groove that is recessed toward the air duct cavity; The groove and the inner wall of the arm define a mounting cavity; The drive mechanism is located inside the mounting cavity, the main body of the drive mechanism is fixedly connected to the inner wall of the arm, and the output end of the drive mechanism is connected to the groove of the rotating cylinder.

6. The hair styling tool according to claim 5, characterized in that, The groove wall is provided with guide ribs on the surface of the air duct cavity, and / or the groove wall is conical on the surface of the air duct cavity.

7. The hair styling tool according to claim 2, characterized in that, The switching component includes: The guide plate has a first air duct opening and a second air duct opening on both sides along the first direction. The first air duct opening and the second air duct opening are both connected to the air duct cavity, and the first air duct opening and the second air duct opening correspond one-to-one with the first air outlet and the second air outlet. A movable baffle is movably attached to the side of the guide plate opposite to the air duct cavity; Guide member, used to guide the movable baffle to move along the first direction; The transmission component is connected to the output end of the drive mechanism and drives the movable baffle to reciprocate between the first position and the second position; When the movable baffle is in the first position, the movable baffle blocks the connection between the first air duct and the first air outlet, and opens the connection between the second air duct and the second air outlet. When the movable baffle is in the second position, the movable baffle blocks the connection between the second air duct and the second air outlet, and opens the connection between the first air duct and the first air outlet.

8. The hair styling tool according to claim 7, characterized in that, The transmission component includes: Gear, connected to the output end of the drive mechanism; A rack extends along the first direction and is disposed on the movable baffle, the rack meshing with the gear; Under the drive of the drive mechanism, the gear rotates and drives the rack and the movable baffle to move along the first direction.

9. The hair styling tool according to claim 7, characterized in that, The transmission component includes: A lead screw is connected to the output end of the drive mechanism, and the lead screw extends along the first direction; A nut is threaded onto the lead screw, and the nut is fixedly connected to the movable baffle. Under the drive of the drive mechanism, the lead screw rotates and drives the nut and the moving baffle to move along the first direction.

10. The hair styling tool according to claim 7, characterized in that, A first fitting groove is provided on the side of the first air duct opening away from the air duct cavity; A second fitting groove is provided on the side of the second air duct opening away from the air duct cavity; The movable baffle is provided with a first fitting part and a second fitting part on both sides along the first direction; When the movable baffle is in the first position, the first fitting part is embedded in the first fitting groove; When the movable baffle is in the second position, the second fitting part is embedded in the second fitting groove.

11. The hair styling tool according to claim 2, characterized in that, The switching component includes: The first valve port is connected between the first air outlet and the air duct cavity; The second valve port is connected between the second air outlet and the air duct cavity; A first valve plate is connected to the output end of the drive mechanism. The first valve plate is rotatably disposed at the first valve port to open or close the first valve port. The second valve plate is connected to the output end of the drive mechanism. The second valve plate is rotatably disposed at the second valve port to open or close the second valve port. Under the drive of the driving mechanism, the positional relationship between the first valve plate and the second valve plate satisfies one of the following conditions: The first valve plate opens the first valve port, and the second valve plate closes the second valve port to connect the first air outlet and the air duct cavity, and to block the connection between the second air outlet and the air duct cavity; The first valve plate closes the first valve port, and the second valve plate opens the second valve port to block the connection between the first air outlet and the air duct cavity, and to connect the second air outlet and the air duct cavity.

12. The hair styling tool according to claim 11, characterized in that, A first limiting part is provided on each side of the first valve port along the first direction. When the first valve plate closes the first valve port, the two sides of the first valve plate along the first direction abut against the two first limiting parts in a corresponding manner. One first limiting part abuts against the surface of the first valve plate facing the air duct cavity, and the other first limiting part abuts against the surface of the first valve plate away from the air duct cavity. The second valve port is provided with a second limiting part on each side along the first direction. When the second valve plate closes the second valve port, the two sides of the second valve plate abut against the two second limiting parts in a corresponding manner along the first direction. One second limiting part abuts against the surface of the second valve plate facing the air duct cavity, and the other second limiting part abuts against the surface of the second valve plate away from the air duct cavity.

13. The hair styling tool according to claim 2, characterized in that, The switching component includes: A flow guide cavity is connected between the air outlet and the air duct cavity, and the first air outlet and the second air outlet are respectively placed on both sides of the flow guide cavity along the first direction; The air duct baffle is hinged to the cavity wall on the side of the air guide cavity away from the air duct cavity via a shaft; The air duct baffle has a first end and a second end opposite to each other. The first end extends to the junction of the guide cavity and the air duct cavity, and the second end passes through the cavity wall of the guide cavity on the side away from the air duct cavity and extends to the outside of the guide cavity. The second end is connected to the output end of the drive mechanism, and under the drive mechanism, the air duct baffle can swing around the axis to drive the first end to move back and forth between the first station and the second station. When the first end is in the first working position, the air duct baffle blocks the connection between the air duct cavity and the first air outlet, and makes the flow guide cavity connect the air duct cavity and the second air outlet; When the first end is in the second working position, the air duct baffle blocks the connection between the air duct cavity and the second air outlet, and makes the flow guide cavity connect the air duct cavity and the first air outlet.

14. The hair styling tool according to claim 13, characterized in that, At the junction of the flow guide cavity and the air duct cavity, a first flow guide wall and a second flow guide wall are provided opposite to each other along the first direction; When the first end of the air duct baffle is in the first working position, the air duct baffle is sealed to the first guide wall to block the connection between the air duct cavity and the first air outlet. When the first end of the air duct baffle is in the second working position, the air duct baffle is sealed to the second guide wall to block the connection between the air duct cavity and the second air outlet.

15. The hair styling tool according to claim 13, characterized in that, The cavity wall on the side of the guide cavity away from the air duct cavity is divided into a third guide wall and a fourth guide wall arranged opposite to each other along the first direction; The shaft is provided between the third guide wall and the fourth guide wall; The third guide wall has a first arc-shaped mating surface at one end near the shaft, and the fourth guide wall has a second arc-shaped mating surface at one end near the shaft; The air duct baffle is provided with a shaft connection part, the shaft connection part is formed with a shaft hole and an arc-shaped outer peripheral surface surrounding the shaft hole; The shaft connecting part is rotatably sleeved on the shaft through the shaft hole; The arc-shaped outer peripheral surface of the shaft connection part is respectively in contact with the first arc-shaped mating surface and the second arc-shaped mating surface.

16. The hair styling tool according to claim 15, characterized in that, One end of the third guide wall extends to the first air outlet, and the other end bends toward the air duct cavity and extends to the shaft; One end of the fourth guide wall extends to the second air outlet, and the other end bends toward the air duct cavity and extends to the shaft.

17. The hair styling tool according to claim 13, characterized in that, The airflow guiding cavity is provided with an airflow guiding plate assembly, which is configured to guide the air in the airflow guiding cavity into the first air outlet and / or the second air outlet.

18. The hair styling tool according to claim 17, characterized in that, The guide vane assembly includes a plurality of guide vanes arranged along the extension direction of the guide cavity; The guide vane is an arc-shaped piece that bends and extends from the side of the guide cavity in the first direction toward the air duct cavity; In two adjacent guide vanes of the same guide vane assembly, the guide vane closer to the air duct cavity has a shorter extension length than the guide vane farther from the air duct cavity.

19. The hair styling tool according to claim 17, characterized in that, The number of guide vane assemblies is two sets, and the two sets of guide vane assemblies are arranged opposite to each other along the first direction.

20. The hair styling tool according to claim 2, characterized in that, The hair styling tool also includes: The locking unit is configured to restrict the opening of the two arms, thereby locking the two arms, and to release the restriction on the opening of the two arms, thereby unlocking the two arms. The third air outlet is located on the outer casing of the arm that is equipped with the air duct assembly; The hair stylist has a first working mode and a second working mode. When the two arms are in the unlocked state, the hair stylist operates in the first working mode, and when the two arms are in the locked state, the hair stylist operates in the second working mode. In the first working mode, the control unit controls the drive mechanism to drive the switching component to switch the first air outlet and the second air outlet to connect to the air duct cavity, and to block the connection between the third air outlet and the air duct cavity. In the second operating mode, the control unit controls the drive mechanism to drive the switching component to connect the third air outlet to the air duct cavity, and blocks the connection between the first air outlet and the air duct cavity, as well as the connection between the second air outlet and the air duct cavity.

21. The hair styling tool according to claim 20, characterized in that, The switching component includes: A fixed cylinder is fixed inside the arm. The fixed cylinder has a first connecting port, a second connecting port and a third connecting port that are all connected to the air duct cavity. The first connecting port, the second connecting port and the third connecting port correspond one-to-one with the first air outlet, the second air outlet and the third air outlet. A rotating cylinder is rotatably fitted outside the fixed cylinder, and a through-hole is provided on the cylinder wall of the rotating cylinder; The rotating cylinder is connected to the output end of the driving mechanism and can rotate relative to the fixed cylinder under the drive of the driving mechanism, so that the guide port connects the first connecting port and the first air outlet, or connects the second connecting port and the second air outlet, or connects the third connecting port and the third air outlet, thereby realizing the switching connection of the first air outlet, the second air outlet and the third air outlet to the air duct cavity.

22. The hair styling tool according to claim 21, characterized in that, The number of the conductive ports is three, and the three conductive ports are respectively the first conductive port, the second conductive port and the third conductive port; The first conduit is used to connect the first connecting port and the first air outlet; The second guide port is used to connect the second connecting port and the second air outlet; The third guide port is used to connect the third connecting port and the third air outlet.

23. The hair styling tool according to claim 20, characterized in that, The hair styling tool also includes: A heating unit is disposed within the air duct cavity. The heating unit is configured to heat the air flowing through the air duct cavity along the air flow direction within the air duct cavity. The control unit is disposed upstream of the heating unit.

24. The hair styling tool according to claim 1, characterized in that, The air duct cavity includes a first air cavity and a second air cavity, wherein the first air cavity includes a first inlet and the second air cavity includes a second inlet; The switching component includes: A flow guide cavity is connected between the air outlet and the air duct cavity, and the first air outlet and the second air outlet are respectively placed on both sides of the flow guide cavity along the first direction; the flow guide cavity includes a first chamber connected to the first air outlet and a second chamber connected to the second air outlet; the first chamber is connected to the first air cavity, and the second chamber is connected to the second air cavity; A blocking plate, wherein the blocking plate alternately blocks the first inlet or the second inlet.

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