Switchable blower accessory

Abstract

The invention relates to the technical field of hair care, and particularly discloses a switchable hair dryer accessory, which comprises an axial adjustment power base, an axial adjustment power assembly, an axial adjustment power assembly and an axial adjustment power assembly, the movable shunting assembly is provided with a central air outlet; the movable flow dividing assembly is driven by the axial adjusting power base and is far away from the base air inlet in the axial direction, so that the spacing distance between the circumferential face of the movable flow dividing assembly and the cavity wall of the base containing cavity is increased, and the air scattering state of an outer ring air outlet channel is formed. The cavity wall is driven by the axial adjusting power base and is close to the base air inlet in the axial direction, so that the circumferential face of the movable flow dividing assembly abuts against the base containing cavity, and the air collecting state of the outer ring air outlet channel is closed. The switchable blower accessory can effectively solve the problem that an existing blower accessory cannot meet the air outlet mode switching requirement.

Description

Technical Field

[0001] The present invention relates to the technical field of hair care, and in particular to a switchable hair dryer attachment. Background Art

[0002] A hair dryer is a very common electronic device, which is used to dry hair and assist in styling. With the increasing demand for hair dryer styling, current hair dryers come with various types of hair dryer attachments. The hair dryer attachment changes the air flow emitted by the hair dryer to allow the air flow to be directed onto the user's hair, thereby styling the user's hair.

[0003] Hair dryer attachments are mainly divided into two types: concentrator nozzles and diffuser nozzles.

[0004] (1) The concentrator nozzle increases the wind speed by reducing the cross-sectional area of the air duct at the air outlet of the hair dryer, forming a concentrated and strong air flow to precisely control the hairstyle (such as the concentrator nozzle structure described in Patent CN207400489U);

[0005] (2) The diffuser nozzle reduces the wind speed by increasing the cross-sectional area of the air duct at the air outlet of the hair dryer, forming a dispersed and soft air flow to make the hair more fluffy and natural (such as the diffuser nozzle structure described in Patent CN215125146U).

[0006] The hair dryer attachments in the traditional technology can only be used as a concentrator nozzle or a diffuser nozzle alone, and the functions are too single. For example, if the user needs to switch from the concentrating effect to the diffusing effect, the concentrator nozzle must be removed from the hair dryer and then replaced with a diffuser nozzle. This brings great inconvenience to the daily use of users. Therefore, there is a need in the current market for a hair dryer attachment that can be compatible with both the functions of a concentrator nozzle and a diffuser nozzle.

[0007] The above information disclosed in this background section is only included to enhance the understanding of the background of the present disclosure, and thus may include information that does not form the prior art already known to those of ordinary skill in the art. Summary of the Invention

[0008] An object of the present invention is to provide a switchable hair dryer attachment, which can effectively solve the problem that the existing hair dryer attachments can only achieve a single concentrating or diffusing function and cannot meet the requirement of switching the air outlet mode.

[0009] To achieve the above object, the present invention provides a switchable hair dryer attachment, including:

[0010] An axially adjustable power base, the axially adjustable power base is provided with a base accommodation cavity and a base air inlet for communicating the base accommodation cavity to the air outlet of the hair dryer;

[0011] An active air diversion component, which is located in the accommodation cavity of the base and is provided with a central air outlet communicating with the accommodation cavity of the base;

[0012] Wherein, the active air diversion component has a diffusing state driven by the axial adjustment power base to move axially away from the base air inlet, so that the distance between the circumferential surface of the active air diversion component and the cavity wall of the base accommodation cavity increases to form an outer ring air outlet channel; and has a wind collecting state driven by the axial adjustment power base to move axially close to the base air inlet, so that the circumferential surface of the active air diversion component abuts against the cavity wall of the base accommodation cavity to close the outer ring air outlet channel.

[0013] Optionally, the cavity wall of the base accommodation cavity is a gradually expanding conical surface that gradually increases away from the base air inlet.

[0014] Optionally, the axial adjustment power base includes:

[0015] A fixed base, which is provided with the base accommodation cavity and the base air inlet, and the active air diversion component is slidably connected to the fixed base axially;

[0016] A linear drive mechanism, which is installed in the fixed base, and the drive end of the linear drive mechanism is connected to the active air diversion component, and is used to drive the active air diversion component to reciprocally slide relative to the fixed base to realize the switching of the air outlet modes of the diffusing state and the wind collecting state.

[0017] Optionally, at the central position of the base accommodation cavity of the fixed base, there is a cylindrical positioning sleeve protruding axially into the base accommodation cavity;

[0018] The active air diversion component includes a central cover covering the outside of the cylindrical positioning sleeve, an external V-shaped ring body surrounding the central cover, and a plurality of first connecting ribs connecting the central cover and the external V-shaped ring body;

[0019] Wherein, the central cover and the external V-shaped ring body are spaced apart to form the central air outlet; the base air inlet is opened on the periphery of the cylindrical positioning sleeve and is aligned with the spaced space between the central cover and the external V-shaped ring body, and is communicated to the central air outlet through the spaced space.

[0020] Optionally, at least two sliding guide columns extending axially are provided on the external V-shaped ring body;

[0021] The fixed base is provided with guide holes for the sliding guide columns to be slidably inserted;

[0022] An outward displacement limiting block having a size larger than that of the guide hole is fixedly disposed at one end of the sliding guide column away from the external V-shaped ring body.

[0023] Optionally, the linear drive mechanism comprises:

[0024] An axial slider, the axial slider is located in the cylindrical positioning sleeve and is fixedly connected to the center cover;

[0025] A rotating screw, the rotating screw being threadedly connected to the axial slider;

[0026] A rotary drive mechanism is installed and fixed in the fixed base, and a driving end of the rotary drive mechanism is fixedly connected to the rotary screw rod to drive the rotary screw rod to rotate.

[0027] Optionally, the axially adjustable power base comprises:

[0028] A fixed base, wherein the fixed base is provided with the base air inlet and a spiral guide groove;

[0029] A manual swivel, the manual swivel is rotatably connected to the fixed base, and the manual swivel is provided with a rod through hole and a base accommodating cavity connected to the air inlet of the base;

[0030] An L-shaped guide rod, one end of which extends into the spiral guide groove and slides along the spiral guide groove after being driven, and the other end of which passes through the rod hole and is fixed to the movable diverter assembly;

[0031] in,

[0032] The spiral guide groove comprises a first groove end, a second groove end, and an intermediate groove section connecting the first groove end and the second groove end;

[0033] In the axial direction, the distance from the first slot end to the air inlet of the base is greater than the distance from the second slot end to the air inlet of the base, so that:

[0034] When the L-shaped guide rod slides to the first slot end, the movable flow diversion assembly enters the wind dispersing state;

[0035] When the L-shaped guide rod slides to the second slot end, the movable flow diversion assembly enters the wind collecting state.

[0036] Optionally, the manual swivel includes:

[0037] A center positioning rod, one end of which is rotatably connected to the center position of the fixed base;

[0038] Inner cover, the inner cover surrounds the central positioning rod and is fixedly connected to the other end of the central positioning rod;

[0039] Conical body, the conical body is arranged at intervals outside the inner cover, and forms the base accommodation cavity with the inner cover surrounding it; wherein, the conical body is provided with the through rod hole;

[0040] Second connecting rib, one end of the second connecting rib is fixedly connected to the inner cover and the other end is fixedly connected to the conical body;

[0041] Hand-twisting outer ring, the hand-twisting outer ring is fixedly arranged on the outer wall of the conical body and is rotatably connected to the edge position of the fixed base.

[0042] Optionally, a reinforcing vertical plate fixedly connected to the inner wall of the inner cover and the central positioning rod is arranged inside the inner cover;

[0043] The fixed base is provided with a fan-shaped ring limiting groove corresponding to the position of the reinforcing vertical plate, and the lower end of the reinforcing vertical plate extends into the fan-shaped ring limiting groove:

[0044] When the L-shaped guide rod slides to the first groove end, the lower end of the reinforcing vertical plate abuts against and is limited by the groove wall at one end of the fan-shaped ring limiting groove;

[0045] When the L-shaped guide rod slides to the second groove end, the lower end of the reinforcing vertical plate abuts against and is limited by the groove wall at the other end of the fan-shaped ring limiting groove.

[0046] Optionally, the movable flow dividing assembly includes a V-shaped member with an opening facing away from the base air inlet, and a ring-shaped cylinder fixedly arranged at the opening end of the V-shaped member and surrounding to form the central air outlet;

[0047] Wherein, the inner cover extends into the central air outlet, and the inner cover includes a tapered conical surface that gradually decreases towards the direction away from the base air inlet, and a cylindrical surface fixedly arranged at one end of the tapered conical surface facing away from the base air inlet, and an annular air supply channel with a constant air outlet area is formed between the annular cylinder and the cylindrical surface.

[0048] The beneficial effect of the present invention is: to provide a switchable hair dryer accessory, through an integrated design, integrating the functions of air collection and air dispersion in a single accessory, and its core lies in the mechanical structure for dynamically adjusting the cross-sectional area of the air duct.

[0049] Specifically, the axial adjustment power base realizes the switching between two states by driving the movable flow dividing assembly to move axially:

[0050] (1)When the movable flow - dividing component is close to the air inlet of the base, its circumferential surface fits tightly with the cavity wall, completely closing the outer - ring air - outlet channel. At this time, the air flow is only concentrated and output at high speed through the central air - outlet, forming a wind - collecting mode.

[0051] (2)When the movable flow - dividing component is far from the air inlet of the base, an annular gap is formed between the circumferential surface and the cavity wall. The air flow is shunted from both the central air - outlet and the outer - ring channel at the same time. The opening of the outer - ring channel enlarges the cross - sectional area of the overall air duct, reducing the wind speed and dispersing the air flow, thus switching to a wind - dispersing mode.

[0052] This design ingeniously utilizes the direct control of the air - duct structure by axial displacement, enabling the dynamic adjustment of the wind - field form without disassembling the accessories. On this basis, the air - flow regulation process follows the principles of fluid mechanics: in the wind - collecting mode, the cross - sectional area of the air duct shrinks (only the central channel is open), and the air flow accelerates to meet the precise shaping requirements; in the wind - dispersing mode, the cross - sectional area enlarges (the central and outer - ring channels are superimposed), and the air flow decelerates and disperses to evenly cover the hair surface. Through the synergistic effect of the mechanical structure and pneumatic characteristics, the present invention solves the problem of functional fragmentation in traditional technologies in a simple and reliable physical way, meeting the user's seamless - switching requirement for the blowing mode.

[0053] Therefore, the switchable hair - dryer accessory provided in this embodiment can effectively solve the problem that the existing hair - dryer accessories can only achieve a single wind - collecting or wind - dispersing function and cannot meet the requirement of switching the air - outlet mode. Description of the Drawings

[0054] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following - described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0055] Figure 1 Schematic diagram of the installation and use of the switchable hair - dryer accessory provided in Embodiment 1;

[0056] Figure 2 Schematic diagram of the wind - collecting state of the switchable hair - dryer accessory provided in Embodiment 1;

[0057] Figure 3 Schematic diagram of the wind - dispersing state of the switchable hair - dryer accessory provided in Embodiment 1;

[0058] Figure 4 Schematic diagram of the wind - collecting state of the switchable hair - dryer accessory provided in Embodiment 2;

[0059] Figure 5 Schematic diagram of the wind - dispersing state of the switchable hair - dryer accessory provided in Embodiment 2;

[0060] Figure 6 Assembly schematic diagram of the manual swivel ring and the L-shaped guide rod provided for Example 2;

[0061] Figure 7 Structural schematic diagram of the fixed base provided for Example 2.

[0062] In the figure:

[0063] 100, Axial adjustment power base; 100a, Base accommodation cavity; 100b, Gradually expanding conical surface; 200, Movable flow splitting assembly; 200a, Central air outlet; 300, Hair dryer;

[0064] 1, Fixed base; 101, Base air inlet;

[0065] 102, Cylindrical positioning sleeve; 103, Guide hole;

[0066] 104, Sector ring limit groove; 105, Spiral guide groove; 1051, First groove end; 1052, Second groove end;

[0067] 2, Linear drive mechanism; 201, Axial slider; 202, Rotating screw; 203, Rotating drive mechanism;

[0068] 301, Central cover; 302, External V-shaped ring body; 303, First connecting rib; 304, Sliding guide post; 305, Outer movement limit block;

[0069] 306, V-shaped part; 307, Ring-shaped cylinder; 308, Annular air supply channel;

[0070] 4, Manual swivel ring; 401, Central positioning rod; 402, Inner cover; 4021, Gradually shrinking conical surface part; 4022, Columnar surface part; 403, Conical body; 4031, Rod passing hole; 404, Second connecting rib; 405, Hand-twisting outer ring; 406, Reinforcing vertical plate;

[0071] 5, L-shaped guide rod;

[0072] 6, Outer ring air outlet channel;

[0073] 7, Magnet. Detailed implementation manners

[0074] As used in this invention, the mention of "embodiment" means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this invention. The term "embodiment" that appears in various places in the specification does not necessarily refer to the same embodiment, nor is it particularly limited to the independence or relevance to other embodiments. In principle, in this invention, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0075] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the technical field to which this invention pertains; the use of the relevant terms herein is only for describing specific embodiments and is not intended to limit this invention.

[0076] In the description of this invention, the phrase "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " herein generally represents an "or" logical relationship between the associated objects before and after.

[0077] In this invention, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantitative, primary-secondary or sequential relationships, etc. between these entities or operations.

[0078] Without further limitation, in this invention, the use of "comprising", "including", "having" or other similar expressions in a statement is intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method or product including the said elements, so that a process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such a process, method or product.

[0079] The same as the understanding in the "Examination Guidelines", in this invention, expressions such as "greater than", "less than", "exceeding" are understood not to include the number itself; expressions such as "above", "below", "within" are understood to include the number itself. In addition, in the description of the embodiments of this invention, the meaning of "a plurality of" is two or more (including two), and similar expressions related to "many" are understood in the same way, such as "multiple groups", "multiple times", etc., unless otherwise specifically defined.

[0080] In the description of the embodiments of the present invention, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or the drawings. It is only for the convenience of describing the specific embodiments of the present invention or facilitating the understanding of the readers, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present invention.

[0081] Unless otherwise clearly specified or limited, in the description of the embodiments of the present invention, the terms such as "installed", "connected", "coupled", "fixed", "set", etc. should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two components or the interaction relationship between two components. For those skilled in the art to which the present invention pertains, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0082] The present invention provides a switchable hair dryer attachment, which dynamically adjusts the cross-sectional area of the air duct by axially driving an active flow splitting component, enabling the hair dryer attachment to seamlessly switch between a wind collecting (precise styling with a strong wind beam) and a wind dispersing (soft diffusion and fluffy styling) mode, solving the technical problems of the traditional attachment having a single function and requiring frequent disassembly and replacement, and being applicable to the multi-scenario hair care needs of users for straight hair styling and curly hair grooming, etc.

[0083] The present invention provides a switchable hair dryer attachment, comprising an axially adjustable power base and an active flow splitting component.

[0084] The axially adjustable power base is provided with a base accommodation cavity and a base air inlet for communicating the base accommodation cavity to the air outlet of the hair dryer;

[0085] The active flow splitting component is located in the base accommodation cavity and is provided with a central air outlet communicating with the base accommodation cavity;

[0086] Among them, the movable air diversion component is driven by the axial adjustment power base to move axially away from the base air inlet, so that the distance between the circumferential surface of the movable air diversion component and the cavity wall of the base accommodation cavity increases, forming a state of dispersed air flow through the outer ring air outlet channel; and it is driven by the axial adjustment power base to move axially closer to the base air inlet, so that the circumferential surface of the movable air diversion component abuts against the cavity wall of the base accommodation cavity to close the outer ring air outlet channel in the air collection state.

[0087] The switchable hair dryer accessory provided by the present invention works as follows:

[0088] S10: Initial state and connection

[0089] The user installs the switchable hair dryer accessory at the air outlet of the hair dryer. The base air inlet is communicated with the air outlet of the hair dryer, and the air flow enters the base accommodation cavity through the base air inlet.

[0090] S20: Air collection mode (closing the outer ring channel)

[0091] Operation: The axial adjustment power base drives the movable air diversion component to move axially in the direction close to the base air inlet.

[0092] Structural change: The circumferential surface of the movable air diversion component is in close contact with the cavity wall of the base accommodation cavity, completely closing the outer ring air outlet channel.

[0093] Air flow path: At this time, the air flow is only output at high speed and concentrated through the central air outlet of the movable air diversion component, forming a strong air beam, which is suitable for precise styling (such as straight hair styling).

[0094] S30: Air dispersion mode (opening the outer ring channel)

[0095] Operation: The axial adjustment power base drives the movable air diversion component to move axially in the direction away from the base air inlet.

[0096] Structural change: An annular gap (i.e., the outer ring air outlet channel) is formed between the circumferential surface of the movable air diversion component and the cavity wall, thereby opening the outer ring air outlet channel.

[0097] Air flow path: The air flow is divided into two paths at this time:

[0098] (1) Central air outlet: The core air flow maintaining a certain wind speed;

[0099] (2) Outer ring air outlet channel: The dispersed and gentle air flow, reducing the overall wind speed.

[0100] The two air flows are mixed to form a uniform and diffused air field, which is suitable for fluffy styling (such as curly hair styling).

[0101] It should be noted that due to the single function of traditional hair dryer attachments, users need to frequently disassemble and replace the concentrator nozzle and diffuser nozzle, which is cumbersome to operate and the experience is fragmented. Through an integrated design, the present invention integrates the two functions into a single attachment, and the core lies in the mechanical structure for dynamically adjusting the cross-sectional area of the air duct.

[0102] Specifically, the axial adjustment power base drives the movable flow splitting component to move axially to achieve the switching between two states:

[0103] (1) When the movable flow splitting component approaches the air inlet of the base, its circumferential surface closely fits the cavity wall, completely closing the outer air outlet channel. At this time, the air flow is only concentrated and output at high speed through the central air outlet, forming a concentrating air mode;

[0104] (2) When the movable flow splitting component moves away from the air inlet of the base, an annular gap is formed between the circumferential surface and the cavity wall. The air flow is split from both the central air outlet and the outer channel at the same time. The opening of the outer channel enlarges the overall cross-sectional area of the air duct, the air speed decreases and the air flow is dispersed, thus switching to the diffusing air mode.

[0105] This design cleverly utilizes the direct control of the air duct structure by axial displacement, and can dynamically adjust the shape of the air field without disassembling the attachment. On this basis, the air flow adjustment process follows the principles of fluid mechanics: in the concentrating air mode, the cross-sectional area of the air duct shrinks (only the central channel is open), and the air flow accelerates to meet the precise styling requirements; in the diffusing air mode, the cross-sectional area expands (the central and outer channels are superimposed), and the air flow decelerates and diffuses to evenly cover the hair surface. Through the synergistic effect of the mechanical structure and aerodynamic characteristics, the present invention solves the problem of functional fragmentation in traditional technologies in a simple and reliable physical way, and realizes the user's seamless switching demand for the blowing mode.

[0106] Therefore, the switchable hair dryer attachment provided by the present invention can effectively solve the problem that the existing hair dryer attachments can only achieve a single concentrating or diffusing air function and cannot meet the demand for switching the air outlet mode.

[0107] Furthermore, the cavity wall of the base accommodating cavity is a gradually expanding conical surface that gradually increases away from the air inlet of the base.

[0108] By designing the cavity wall of the base accommodating cavity as a gradually expanding conical surface, when the movable flow splitting component moves axially away, the annular gap formed between the gradually expanding conical surface and the circumferential surface of the flow splitting component is in a diffused shape, which is beneficial to the natural dispersion of the outer air flow, reduces air flow disturbance, and improves the uniformity of the diffusing air mode. The gradually expanding structure also optimizes the air flow path, reduces wind resistance, and enhances the aerodynamic efficiency in both modes.

[0109] As in Embodiments 1-2, next, various driving methods of the switchable hair dryer attachment of the present invention will be introduced with reference to the accompanying drawings.

[0110] Embodiment 1

[0111] Referring to Figures 1 to 3 , the switchable hair dryer accessory provided in this embodiment is an electric structure. Specifically, the axial adjustment power base 100 includes a fixed base 1 and a linear drive mechanism 2.

[0112] The fixed base 1 is provided with the base accommodation cavity 100a and the base air inlet 101, and the movable flow splitting assembly 200 is slidably connected to the fixed base 1 along the axial direction;

[0113] The linear drive mechanism 2 is installed in the fixed base 1, and the drive end of the linear drive mechanism 2 is connected to the movable flow splitting assembly 200, and is used to drive the movable flow splitting assembly 200 to reciprocate relative to the fixed base 1, so as to realize the switching of the air outlet modes between the diffused air state and the concentrated air state.

[0114] The linear drive mechanism 2 is used to realize the automatic control of the movable flow splitting assembly 200, and the user can accurately switch the mode without manual operation. The sliding connection design of the fixed base 1 and the movable assembly simplifies the mechanical structure, ensures the linear accuracy of the axial displacement, and improves the reliability and response speed of the mode switching.

[0115] Optionally, at the central position of the base accommodation cavity 100a of the fixed base 1, a cylindrical positioning sleeve 102 protruding axially into the base accommodation cavity 100a is provided;

[0116] The movable flow splitting assembly 200 includes a central cover 301 sleeved outside the cylindrical positioning sleeve 102, an external V-shaped ring body 302 surrounding the central cover 301, and a plurality of first connecting ribs 303 connecting the central cover 301 and the external V-shaped ring body 302;

[0117] Wherein, the central cover 301 and the external V-shaped ring body 302 are spaced apart to form the central air outlet 200a; the base air inlet 101 is opened on the periphery of the cylindrical positioning sleeve 102 and is aligned with the spaced space between the central cover 301 and the external V-shaped ring body 302, and is communicated to the central air outlet 200a through the spaced space.

[0118] The nested design of the cylindrical positioning sleeve 102 with the central cover 301 and the external V-shaped ring body 302 realizes the natural stratification of the air flow. The spaced space between the central cover 301 and the V-shaped ring body forms a directional diversion channel, ensuring that the air flow is efficiently concentrated at the central air outlet 200a in the concentrated air mode, while in the diffused air mode, the opening of the outer ring channel and the cooperating conical surface 100b expand the wind field coverage area, with a compact structure and reasonable air flow distribution.

[0119] Further, at least two sliding guide posts 304 extending axially are provided on the outer V-shaped ring body 302;

[0120] The fixed base 1 is provided with guide holes 103 for the sliding guide posts 304 to slide and insert into;

[0121] An outer displacement limiting block 305 with a size larger than the guide hole 103 is fixedly provided at one end of the sliding guide post 304 away from the outer V-shaped ring body 302.

[0122] In this embodiment, the linear drive mechanism 2 includes an axial slider 201, a rotary screw 202, and a rotary drive mechanism 203.

[0123] The axial slider 201 is located inside the cylindrical positioning sleeve 102 and is fixedly connected to the central cover 301;

[0124] The rotary screw 202 is threadedly connected to the axial slider 201;

[0125] The rotary drive mechanism 203 is installed and fixed in the fixed base 1, and the drive end of the rotary drive mechanism 203 is fixedly connected to the rotary screw 202 for driving the rotary screw 202 to rotate.

[0126] The electric switchable hair dryer accessory provided in this embodiment integrates an electric linear drive mechanism 2 and an adjustable air duct structure to realize automatic switching of the hair dryer accessory between a concentrated air mode and a diffused air mode. The specific working process is as follows:

[0127] S101: Initial state and connection

[0128] Installation and positioning: The user fixes the switchable hair dryer accessory at the air outlet of the hair dryer 300 by means of adsorption by a magnet 7, snap connection, or threaded connection, etc., and the base air inlet 101 is completely aligned with the air outlet of the hair dryer 300 to ensure smooth air flow into the base accommodation cavity 100a.

[0129] Circuit initialization: The rotary drive mechanism 203 (such as a micro stepping motor) is powered on and standby, and the control system (integrated on the circumferential side of the hair dryer 300 or the hair dryer accessory) enters a low-power state, waiting for user instructions.

[0130] S102: Mode switching trigger

[0131] User operation: The user selects the "concentrated air" or "diffused air" mode through the physical button or touch screen on the handle of the hair dryer 300, and the triggered electrical signal is transmitted to the control module.

[0132] Signal analysis: The control module sends forward / backward rotation pulse signals to the rotary drive mechanism 203 according to instructions and sets the number of rotation circles (corresponding to the target displacement of the movable flow splitting assembly 200).

[0133] S103: The linear drive mechanism 2 operates

[0134] Motor start-up rotation: The rotary drive mechanism 203 drives the rotary screw 202 (precision ball screw) to rotate clockwise or counterclockwise.

[0135] Slider displacement: The axial slider 201 engaged with the rotary screw 202 moves linearly along the inner wall of the cylindrical positioning sleeve 102, driving the fixedly connected central cover 301 and the external V-shaped ring body 302 to slide axially synchronously.

[0136] Key structure coordination: ① Sliding guide post 304: The guide post on the external V-shaped ring body 302 is inserted into the guide hole 103 of the fixed base 1 to ensure that the movement trajectory of the assembly is strictly along the axis and avoid jamming caused by deflection; ② Cylindrical positioning sleeve 102: As the sliding track of the central cover 301, it restricts radial shaking and improves the movement accuracy.

[0137] S104: Dynamic adjustment of the air duct form

[0138] (1) Air collection mode (the movable component moves inwards, close to the base air inlet 101)

[0139] Structure closure: The circumferential surface of the external V-shaped ring body 302 is closely attached to the gradually expanding conical surface 100b, completely closing the outer air outlet channel 6.

[0140] Sealing enhancement: Optionally, the V-shaped ring body is wrapped with silica gel to enhance the airtightness with the conical surface cavity wall and prevent air leakage.

[0141] Airflow focusing: After the air flows in from the base air inlet 101, it flows at high speed through the space between the central cover 301 and the external V-shaped ring body 302 towards the central air outlet 200a, forming a concentrated air beam, which is suitable for precise drying or straight hair styling.

[0142] (2) Air dispersion mode (the movable component moves outwards, away from the base air inlet 101)

[0143] Gap formation: The external V-shaped ring body 302 moves outwards, forming an annular gap (outer air outlet channel 6) between its circumferential surface and the gradually expanding conical surface 100b. The cross-sectional area of the outer air outlet channel 6 gradually expands as the external V-shaped ring body 302 moves outwards.

[0144] Pneumatic optimization: The gradually expanding conical surface 100b guides the outer airflow to naturally disperse, reducing turbulent noise.

[0145] Air flow diversion: ① Core air flow: part of the air flow is still output from the central air outlet 200a to maintain directional blowing capability; ② Outer circle air flow: the remaining air flow is evenly scattered through the annular gap to achieve fluffy hair styling.

[0146] S105: Locking and feedback in place

[0147] When the movable diversion assembly 200 moves to the target position, the outward limit block 305 at the end of the sliding guide column 304 contacts the fixed base 1. When excessive torque is detected, the micro switch is triggered and the motor stops running.

[0148] Of course, the micro switch may not be provided, and the current of the rotary drive mechanism 203 may be automatically detected. If the stall current of the rotary drive mechanism 203 exceeds the threshold value, the control system automatically cuts off the power for protection.

[0149] Optionally, a color-changing indicator light may be provided on the hair dryer 300 to indicate the air outlet mode. For example, the indicator light of the hair dryer 300 may be switched to blue (wind collection) or green (wind dispersion). Alternatively, the completion of the mode switching may be confirmed by a buzzer prompt tone.

[0150] The present embodiment provides an electrically driven switchable hair dryer accessory, which adopts a linear drive mechanism 2 to realize automatic adjustment of the air duct, and includes a fixed base 1, a cylindrical positioning sleeve 102 and a movable diversion assembly 200, wherein the linear drive mechanism 2 drives the rotating screw 202 to drive the axial slider 201 to move through the rotating drive mechanism 203, so that the movable diversion assembly 200 slides axially, and the closing / separation of the external V-shaped ring body 302 and the cavity wall of the gradually expanding cone 100b is used to realize the switching of the wind collection and dispersion modes, and the linear motion accuracy is ensured by the sliding guide column 304 and the cylindrical positioning sleeve 102, and the airflow focusing and diffusion effects are optimized in combination with the sealing structure to realize electric precise control. The user can complete the mode conversion through button instructions, without manual operation and with the in-place feedback function.

[0151] Example 2

[0152] See also Figures 4 to 7 The switchable hair dryer attachment provided in this embodiment is a manual twisting structure. Specifically, the axially adjustable power base 100 includes:

[0153] A fixed base 1, wherein the fixed base 1 is provided with the base air inlet 101 and a spiral guide groove 105;

[0154] A manual swivel 4, the manual swivel 4 is rotatably connected to the fixed base 1, and the manual swivel 4 is provided with a rod through hole 4031 and a base accommodating cavity 100a that is butt-connected to the base air inlet 101;

[0155] The L-shaped guide rod 5, one end of the L-shaped guide rod 5 extends into the spiral guide groove 105 and slides along the spiral guide groove 105 after being driven, and the other end passes through the rod through hole 4031 and is fixedly connected to the movable flow dividing assembly 200;

[0156] Among them,

[0157] The spiral guide groove 105 includes a first groove end 1051, a second groove end 1052, and an intermediate groove section connecting the first groove end 1051 and the second groove end 1052;

[0158] Along the axial direction, the distance dimension from the first groove end 1051 to the base air inlet 101 is greater than the distance dimension from the second groove end 1052 to the base air inlet 101, so that:

[0159] When the L-shaped guide rod 5 slides to the first groove end 1051, the movable flow dividing assembly 200 enters the air-dispersing state;

[0160] When the L-shaped guide rod 5 slides to the second groove end 1052, the movable flow dividing assembly 200 enters the air-collecting state.

[0161] Optionally, the manual rotating ring 4 includes:

[0162] A central positioning rod 401, one end of the central positioning rod 401 is rotatably connected to the central position of the fixed base 1;

[0163] An inner cover 402, the inner cover 402 surrounds the central positioning rod 401 and is fixedly connected to the other end of the central positioning rod 401;

[0164] A conical body 403, the conical body 403 is arranged at intervals outside the inner cover 402, and forms the base accommodation cavity 100a with the inner cover 402 surrounding it; among them, the conical body 403 is provided with the rod through hole 4031;

[0165] A second connecting rib 404, one end of the second connecting rib 404 is fixedly connected to the inner cover 402 and the other end is fixedly connected to the conical body 403;

[0166] A hand-twisting outer ring 405, the hand-twisting outer ring 405 is fixedly arranged on the outer wall of the conical body 403 and is rotatably connected to the edge position of the fixed base 1.

[0167] Optionally, by using a bolt to penetrate the central positioning rod 401 from the side of the fixed base 1, the axial limit between the central positioning rod 401 and the fixed base 1 can be realized, ensuring the axial fixation of the manual rotating ring 4 and preventing the two from separating from each other axially during rotation.

[0168] Further, a reinforcing vertical plate 406 fixedly connected to the inner wall of the inner cover 402 and the central positioning rod 401 is provided inside the inner cover 402;

[0169] The fixing base 1 is provided with a fan-shaped ring limiting groove 104 at a position corresponding to the reinforcing vertical plate 406, and the lower end of the reinforcing vertical plate 406 extends into the fan-shaped ring limiting groove 104:

[0170] When the L-shaped guide rod 5 slides to the first groove end 1051, the lower end of the reinforcing vertical plate 406 abuts against and is limited by the groove wall at one end of the fan-shaped ring limiting groove 104;

[0171] When the L-shaped guide rod 5 slides to the second groove end 1052, the lower end of the reinforcing vertical plate 406 abuts against and is limited by the groove wall at the other end of the fan-shaped ring limiting groove 104.

[0172] In this embodiment, the movable flow splitting assembly 200 includes a V-shaped member 306 with an opening facing away from the base air inlet 101, and a ring-shaped cylinder 307 fixedly arranged at the open end of the V-shaped member 306 and surrounding to form the central air outlet 200a;

[0173] Wherein, the inner cover 402 extends into the central air outlet 200a, and the inner cover 402 includes a tapered surface portion 4021 that gradually decreases away from the base air inlet 101, and a cylindrical surface portion 4022 fixedly arranged at one end of the tapered surface portion 4021 facing away from the base air inlet 101. An annular air supply channel 308 with a constant air outlet area is formed between the ring-shaped cylinder 307 and the cylindrical surface portion 4022.

[0174] The manual switchable hair dryer accessory provided in this embodiment realizes the switching of the hair dryer accessory between the air collection mode and the air dispersion mode through a pure mechanical structure, without electric drive, and relies on the user's manual rotation operation. Its core lies in the linkage design of the spiral guide groove 105 trajectory and the L-shaped guide rod 5, combined with the pneumatic optimization of the cavity of the gradually expanding conical surface 100b. The specific process is as follows:

[0175] S201: Initial installation and air path connection

[0176] Accessory installation: The user aligns the base air inlet 101 of the manual rotating ring 4 with the air outlet of the hair dryer 300 and fixes it by means of magnetic attraction, snap connection or screw tightening to ensure seamless docking of the air flow path.

[0177] Structural pre-positioning: The L-shaped guide rod 5 is initially located in the middle groove section of the spiral guide groove 105, and a small initial size gap is formed between the V-shaped member 306 of the movable flow splitting assembly 200 and the gradually expanding conical surface 100b of the base accommodation cavity 100a.

[0178] S202: Mode switching operation

[0179] S2021: The user rotates the outer manual ring 405

[0180] (1)Operation input: The user rotates the outer manual ring 405 clockwise or counterclockwise, corresponding to the stroke of the first groove end 1051 to the second groove end 1052 of the spiral guide groove 105.

[0181] (2)Mechanical transmission:

[0182] Linkage of the manual rotating ring 4: The outer manual ring 405 drives the conical body 403 and the internal cover 402 to rotate around the central positioning rod 401.

[0183] Movement of the L-shaped guide rod 5: One end of the L-shaped guide rod 5 is driven by the rotation of the conical body 403, and the other end slides along the spiral guide groove 105, converting the rotational movement into an axial displacement.

[0184] Trajectory of the spiral guide groove 105: The axial height difference between the first groove end 1051 (high position) and the second groove end 1052 (low position) is the maximum axial displacement stroke of the corresponding movable flow splitting component 200.

[0185] S2022: Limit and in-place feedback

[0186] Sector ring limit groove 104: When the L-shaped guide rod 5 slides to the first groove end 1051 (diffused wind mode) or the second groove end 1052 (concentrated wind mode), the lower end of the reinforced vertical plate 406 abuts against the groove wall of the sector ring limit groove 104 to prevent further rotation.

[0187] Tactile feedback: An obvious resistance is generated instantaneously at the limit, prompting the user that the mode switching is completed.

[0188] S203: Dynamic adjustment of the air duct

[0189] S2031: Concentrated wind mode (the L-shaped guide rod 5 slides to the second groove end 1052)

[0190] Structural closure: The movable flow splitting component 200 is pulled closer to the base air inlet 101, and the circumferential surface of the V-shaped component 306 is closely attached to the cavity wall of the gradually expanding conical surface 100b, completely closing the outer ring air outlet channel 6.

[0191] Airflow focusing: The airflow forms an annular air supply channel 308 with a constant air outlet area between the annular cylinder body 307 and the columnar surface 4022, forming a concentrated air beam.

[0192] S2032: Diffused wind mode (the L-shaped guide rod 5 slides to the first groove end 1051)

[0193] Gap opening: The movable flow diversion component 200 moves downward, and an annular gap (outer air outlet channel 6) is formed between the V-shaped component 306 and the cavity wall of the gradually expanding conical surface 100b.

[0194] Airflow diffusion: ① Central airflow: Part of the airflow still outputs through the annular cylinder body 307 to maintain the basic wind speed; ② Outer airflow: The remaining airflow is guided by the gradually expanding conical surface 100b and blows outwards from the outer air outlet channel 6.

[0195] S204: Synergistic effect of key structures

[0196] Air collection mode: The inclined surface of the V-shaped component 306 and the gradually expanding conical surface 100b form a sealing surface, and the constant gap of the annular cylinder body 307 ensures the stability of the central airflow.

[0197] Air dispersion mode: After the V-shaped component 306 moves outwards, its open end and the gradually expanding conical surface 100b form a flared outlet, optimizing the uniformity of airflow diffusion.

[0198] Trajectory of the spiral guide groove 105: The groove is designed with a spiral line, making the rotation angle linearly correspond to the axial displacement, and the operating feel is smooth.

[0199] This embodiment provides a manually operated switchable hair dryer accessory that realizes air duct adjustment through a mechanical structure, including a fixed base 1, a manual rotating ring 4, and a movable flow diversion component 200. When the user rotates the outer hand-twisting ring 405, the manual rotating ring 4 drives the L-shaped guide rod 5 to slide along the spiral guide groove 105, converting the rotational motion into an axial displacement, and driving the V-shaped component 306 of the movable flow diversion component 200 to approach or move away from the cavity wall of the gradually expanding conical surface 100b, thereby closing or opening the outer air outlet channel 6. In the air collection mode, the V-shaped component 306 fits with the cavity wall, and the airflow forms a concentrated air beam through the annular cylinder body 307 with a constant gap; in the air dispersion mode, the V-shaped component 306 moves outwards to form a flared annular gap, and the airflow is diffused and output in two ways: central and outer. The spiral guide groove 105 and the fan ring limit groove 104 cooperate to ensure the displacement accuracy and in-place limit. The gradually expanding conical surface 100b optimizes the uniformity of airflow diffusion. The pure mechanical design does not require electricity and relies on manual rotation to achieve mode switching. The structure is simple and reliable and provides tactile feedback to meet the user's rapid adjustment needs.

[0200] It should be noted that the linear drive mechanism mentioned in the present invention can be a cylinder, a hydraulic cylinder, an electric cylinder, or a motor screw linear module, etc., and the rotary drive mechanism mentioned can be a brushed motor, a brushless motor, or a rotary cylinder, etc. The present invention does not limit the specific structural forms of the linear drive mechanism and the rotary drive mechanism.

[0201] Finally, it should be noted that although the above embodiments have been described in the text of the specification and the drawings of the present application, the patent protection scope of the present application cannot be limited thereby. Any technical solutions obtained by equivalent structural or equivalent process substitutions or modifications made based on the substantial concept of the present application and using the content recorded in the text of the specification and the drawings of the present application, as well as those directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are all included in the patent protection scope of the present application.

Claims

1. A switchable hair dryer accessory, characterized in that, Comprising: An axially adjustable power base (100), the axially adjustable power base (100) being provided with a base accommodation cavity (100a) and a base air inlet (101) for communicating the base accommodation cavity (100a) to the air outlet of the hair dryer (300); A movable flow splitting assembly (200), the movable flow splitting assembly (200) being located within the base accommodation cavity (100a) and being provided with a central air outlet (200a) communicating with the base accommodation cavity (100a); Wherein, the movable flow splitting assembly (200) is driven by the axially adjustable power base (100) to move axially away from the base air inlet (101), such that the distance between the circumferential surface of the movable flow splitting assembly (200) and the cavity wall of the base accommodation cavity (100a) increases, so as to form a diffused air state of an outer ring air outlet passage (6); and is driven by the axially adjustable power base (100) to move axially close to the base air inlet (101), such that the circumferential surface of the movable flow splitting assembly (200) abuts against the cavity wall of the base accommodation cavity (100a), so as to close the outer ring air outlet passage (6) in a concentrated air state.

2. The switchable hair dryer attachment according to claim 1, wherein, The cavity wall of the base accommodation cavity (100a) is a gradually expanding conical surface (100b) that gradually increases away from the base air inlet (101).

3. The switchable hair dryer attachment according to claim 1, wherein, The axially adjustable power base (100) includes: A fixed base (1), the fixed base (1) being provided with the base accommodation cavity (100a) and the base air inlet (101), and the movable flow splitting assembly (200) being slidably connected to the fixed base (1) axially; A linear drive mechanism (2), the linear drive mechanism (2) being installed in the fixed base (1), and the drive end of the linear drive mechanism (2) being connected to the movable flow splitting assembly (200) for driving the movable flow splitting assembly (200) to reciprocally slide relative to the fixed base (1), so as to realize the switching of the air outlet modes between the diffused air state and the concentrated air state.

4. The switchable hair dryer accessory according to claim 3, wherein At the central position of the base accommodation cavity (100a) of the fixed base (1), a cylindrical positioning sleeve (102) protruding axially into the base accommodation cavity (100a) is provided; The movable flow splitting assembly (200) includes a central cover (301) covering the outside of the cylindrical positioning sleeve (102), an external V-shaped ring body (302) surrounding the central cover (301), and a plurality of first connecting ribs (303) connecting the central cover (301) and the external V-shaped ring body (302); Wherein, the central cover (301) and the external V-shaped ring body (302) are spaced apart from each other to form the central air outlet (200a); the base air inlet (101) is opened on the periphery of the cylindrical positioning sleeve (102) and is aligned with the spaced space between the central cover (301) and the external V-shaped ring body (302), and is communicated to the central air outlet (200a) through the spaced space.

5. The switchable hair dryer attachment according to claim 4, characterized in that, At least two sliding guide posts (304) extending axially are provided on the external V-shaped ring body (302); A guide hole (103) for the sliding guide post (304) to slide and insert is provided on the fixed base (1); An outer displacement limiting block (305) with a size larger than the guide hole (103) is fixedly provided at one end of the sliding guide post (304) away from the external V-shaped ring body (302).

6. The switchable hair dryer accessory according to claim 4, wherein, The linear drive mechanism (2) includes: An axial slider (201), the axial slider (201) is located inside the cylindrical positioning sleeve (102) and is fixedly connected to the central cover (301); A rotating screw (202), the rotating screw (202) is threadedly connected to the axial slider (201); A rotary drive mechanism (203), the rotary drive mechanism (203) is installed and fixed in the fixed base (1), and the drive end of the rotary drive mechanism (203) is fixedly connected to the rotating screw (202) for driving the rotating screw (202) to rotate.

7. The switchable hair dryer attachment according to claim 1, wherein, The axial adjustment power base (100) includes: A fixed base (1), the fixed base (1) is provided with the base air inlet (101) and a spiral guide groove (105); A manual rotating ring (4), the manual rotating ring (4) is rotatably connected to the fixed base (1), and the manual rotating ring (4) is provided with a through rod hole (4031) and a base accommodating cavity (100a) connected to the base air inlet (101) in a butting manner; An L-shaped guide rod (5), one end of the L-shaped guide rod (5) extends into the spiral guide groove (105) and slides along the spiral guide groove (105) after being driven, and the other end passes through the through rod hole (4031) and is fixedly connected to the movable flow dividing assembly (200); Wherein, The spiral guide groove (105) includes a first groove end (1051), a second groove end (1052), and an intermediate groove section connecting the first groove end (1051) and the second groove end (1052); In the axial direction, the distance from the first groove end (1051) to the base air inlet (101) is larger than the distance from the second groove end (1052) to the base air inlet (101), so that: When the L-shaped guide rod (5) slides to the first groove end (1051), the movable flow dividing assembly (200) enters the air-dispersing state; When the L-shaped guide rod (5) slides to the second groove end (1052), the movable flow dividing assembly (200) enters the air-collecting state.

8. The switchable hair dryer attachment according to claim 7, wherein, The manual rotating ring (4) includes: A central positioning rod (401), one end of the central positioning rod (401) is rotatably connected to the central position of the fixed base (1); An inner cover (402), the inner cover (402) surrounds the central positioning rod (401) and is fixedly connected to the other end of the central positioning rod (401); A conical body (403) is spaced outside the inner cover (402) and forms the base accommodation cavity (100a) with the inner cover (402) surrounding it; wherein, the conical body (403) is provided with the through-rod hole (4031); A second connecting rib (404), one end of the second connecting rib (404) is fixedly connected to the inner cover (402) and the other end is fixedly connected to the conical body (403); A hand-twisting outer ring (405) is fixedly arranged on the outer wall of the conical body (403) and is rotatably connected to the edge position of the fixed base (1).

9. The switchable hair dryer accessory according to claim 8, wherein Inside the inner cover (402), there is a reinforcing vertical plate (406) fixedly connected to the inner wall of the inner cover (402) and the central positioning rod (401); The fixed base (1) is provided with an annular sector-shaped limiting groove (104) corresponding to the position of the reinforcing vertical plate (406), and the lower end of the reinforcing vertical plate (406) extends into the annular sector-shaped limiting groove (104): When the L-shaped guide rod (5) slides to the first groove end (1051), the lower end of the reinforcing vertical plate (406) abuts against and is limited by the groove wall at one end of the annular sector-shaped limiting groove (104); When the L-shaped guide rod (5) slides to the second groove end (1052), the lower end of the reinforcing vertical plate (406) abuts against and is limited by the groove wall at the other end of the annular sector-shaped limiting groove (104).

10. The switchable hair dryer attachment according to claim 8, wherein, The movable flow splitting assembly (200) includes a V-shaped member (306) with an opening facing away from the base air inlet (101), and an annular cylinder body (307) fixedly arranged at the opening end of the V-shaped member (306) and surrounding to form the central air outlet (200a); Wherein, the inner cover (402) extends into the central air outlet (200a), and the inner cover (402) includes a tapered conical surface part (4021) that gradually decreases away from the base air inlet (101), and a cylindrical surface part (4022) fixedly arranged at one end of the tapered conical surface part (4021) facing away from the base air inlet (101). An annular air supply channel (308) with a constant air outlet area is formed between the annular cylinder body (307) and the cylindrical surface part (4022).

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