Hair care air duct

Abstract

The invention discloses a hair care air duct which comprises an air duct body, a cavity is formed in the air duct body, an air inlet and an air outlet are formed in the two sides of the cavity respectively, a movable sleeve and a high-temperature-resistant push rod motor for driving the movable sleeve to move are arranged in the cavity, and the movable sleeve can be driven by the high-temperature-resistant push rod motor to reciprocate towards the air outlet. The appearance of the movable sleeve is annularly arranged, the outer side wall of the movable sleeve can abut against the inner side wall of the air outlet, the inner ring of the movable sleeve protrudes outwards along the circumference of the movable sleeve to form a connecting ring, and the inner ring of the movable sleeve is sequentially divided into a first cavity and a second cavity from outside to inside through the connecting ring. A penetrating hole capable of being communicated with the first cavity is formed in the side, facing the air inlet, of the connecting ring in a penetrating mode, a cover ring capable of sealing and covering the penetrating hole is movably arranged at the inner ring position of the movable sleeve, and a cover plate capable of sealing an opening of the second cavity is rotationally arranged in the second cavity. A transmission component capable of driving the cover ring and the cover plate to move synchronously along with displacement of the movable sleeve is arranged in the first cavity.

Description

Technical Field

[0001] This invention specifically relates to a hair dryer. Background Technology

[0002] Current hair dryers primarily function to dry hair by blowing air. Some dryers with conditioning functions typically employ a fixed spray mechanism at the air outlet, or require manual application of conditioning solution before blow-drying. They lack a mechanism for switching the airflow path. This design has significant drawbacks: it cannot precisely switch between conditioning and normal drying modes; either the airflow is obstructed and the conditioning solution doesn't diffuse effectively during conditioning, or unnecessary tubing or structures obstruct the airflow during normal drying, resulting in low airflow efficiency. Summary of the Invention

[0003] In view of the deficiencies of the existing technology, the technical problem to be solved by the present invention is to provide a hair dryer.

[0004] A hair dryer includes a main body with a cavity. An air inlet and an air outlet are located on opposite sides of the cavity. A movable sleeve and a high-temperature resistant push rod motor are disposed within the cavity. The movable sleeve is driven by the high-temperature resistant push rod motor to reciprocate towards the air outlet. The movable sleeve is annular in shape, and its outer wall abuts against the inner wall of the air outlet. A connecting ring protrudes outward from the inner circumference of the movable sleeve, dividing the inner circumference of the movable sleeve into a first cavity and a second cavity from the outside in. The connecting ring extends through the air inlet side. The device has a through hole that can communicate with the first cavity. A cover ring that can close the through hole is movably provided at the inner ring of the movable sleeve. A cover plate that can close its opening is rotatably provided in the second cavity. A transmission component that can drive the cover ring and the cover plate to move synchronously with the displacement of the movable sleeve is provided in the first cavity. When the cover plate is in the open state, the cover ring is in the closed connection state of the through hole through the transmission component. A container for holding hair care liquid is detachably connected to the air duct body. The liquid outlet of the container is connected to the first cavity through a deformable connecting hose. The container has an atomizing device that can atomize the care liquid inside its cavity.

[0005] In one embodiment, the transmission component includes a first connecting rod. The cover plate is rotatably disposed in the second cavity via a rotating shaft. A torsion spring is provided at the rotatable connection between the cover plate and the second cavity. The torsion spring is used to keep the cover plate in a connected state with the second cavity opening relatively open. One end of the rotating shaft extends into the first cavity and is fixedly disposed on the second connecting rod. One end of the first connecting rod is hinged to the second connecting rod, and the other end of the first connecting rod is hinged to the cover ring through a through hole. A first protrusion is provided on the inner side of the cavity. A second protrusion is provided on one side of the cover ring extending to the outer side of the movable sleeve. The second protrusion can press against the first protrusion as the movable sleeve moves, causing the cover ring to move away from the through hole.

[0006] In one embodiment, the perforations are distributed at intervals along the circumference.

[0007] In one embodiment, the second cavity has a flared cross-section with openings at both ends, and the diameter of the opening end of the second cavity facing the air outlet is smaller than the diameter of the opening end of the second cavity facing the air inlet.

[0008] In one embodiment, a sealing ring is provided at the contact point between the outer wall of the movable sleeve and the inner wall of the air outlet.

[0009] In one embodiment, a sealing gasket is provided on the side of the cover ring facing the perforation, and the sealing gasket fits tightly against the side of the connecting ring facing the air inlet to enhance the sealing performance when the cover ring closes the perforation.

[0010] In one embodiment, a fixed pipe extends from the lower side of the air duct body, the receiving box is threadedly fitted onto the fixed pipe, and the connecting hose is connected between the fixed pipe and the first cavity.

[0011] In summary, the advantages of this invention over the prior art are:

[0012] This invention achieves precise switching between conditioning and normal drying modes, balancing hair care effects with airflow efficiency: In conditioning mode, a high-temperature resistant push rod motor drives the movable sleeve to shift and block the air outlet. Hot or cold air blown out by the hairdryer cannot be directly discharged from the air outlet, but can only flow through the perforation on the connecting ring into the first chamber, thereby assisting the atomized conditioning liquid in the first chamber to be blown out together, so that the atomized conditioning liquid and the air are fully mixed. In normal drying mode, the movable sleeve does not move and does not block the air outlet. The perforation is closed by the cover ring. Hot air does not need to flow through the first chamber and can directly pass through the second chamber and be blown out from the air outlet, avoiding wind resistance caused by extra paths, ensuring smooth airflow, and balancing hair care effects with normal drying efficiency. Attached Figure Description

[0013] Figure 1 This is one of the cross-sectional views of a hair dryer according to an embodiment of the present invention;

[0014] Figure 2 This is a second cross-sectional view of a hair dryer according to one embodiment of the present invention;

[0015] Figure 3 This is a perspective view of a hair dryer according to one embodiment of the present invention;

[0016] Figure 4 This is one of the exploded views of a hair dryer according to one embodiment of the present invention;

[0017] Figure 5 This is a second exploded view of a hair dryer according to one embodiment of the present invention. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0019] like Figures 1 to 5 The present invention preferably provides a hair dryer, including a hair dryer body 1, a cavity 2 inside the hair dryer body 1, an air inlet 3 and an air outlet 4 on both sides of the cavity 2, a movable sleeve 5 and a high-temperature resistant push rod motor 6 for driving the movable sleeve 5 to move, the movable sleeve 5 can be driven by the high-temperature resistant push rod motor 6 to move back and forth towards the air outlet 4, the movable sleeve 5 is annular in shape, and the outer side wall of the movable sleeve 5 can abut against the inner side wall of the air outlet 4, a connecting ring 7 is formed protruding outward along the circumference of the inner ring of the movable sleeve 5, the connecting ring 7 divides the inner ring of the movable sleeve 5 from the outside to the inside to form a first cavity 8 and a second cavity 9, the connecting ring 7 facing the air inlet. A through hole 10 is provided on one side of the opening 3, which can communicate with the first cavity 8. A cover ring 11 is movably provided in the inner ring of the movable sleeve 5 to close the through hole 10. A cover plate 12 is rotatably provided in the second cavity 9 to close its opening. A transmission component 13 is provided in the first cavity 8 to drive the cover ring 11 and the cover plate 12 to move synchronously with the displacement of the movable sleeve 5. When the cover plate 12 is in the open state through the transmission component 13, the cover ring 11 is in the closed connection state of the through hole 10. A container 14 for holding hair care liquid is detachably connected to the air duct body 1. The outlet of the container 14 is connected to the second cavity 9 through a deformable connecting hose. The container 14 contains atomized care liquid.

[0020] Specifically, the cavity of the air duct body provides space for airflow and the installation of various components. The air inlet is used to draw in outside air, and the air outlet is used to discharge heated air or directly discharge cold air. The high-temperature resistant push rod motor is fixedly installed in the cavity, and its output end is connected to the movable sleeve, which can drive the movable sleeve to move back and forth along the cavity axis towards the air outlet. The movable sleeve is ring-shaped, and when it is located at the air outlet, its outer wall abuts against the inner wall of the air outlet, which plays a sealing and guiding role. The connecting ring divides the inner ring of the movable sleeve into a first cavity and a second cavity, and the perforation provides a communication channel between the first cavity and the outside (or transmission components). The cover ring is movably set in the inner ring of the movable sleeve and can close or open the perforation under the action of the transmission components. The cover plate is rotatably set at the opening of the second cavity and can close or open the second cavity under the action of the transmission components. The receiving box is detachably connected to the air duct body, and the built-in atomizing device atomizes the care solution. The atomized care solution is delivered to the first cavity through a deformable connecting hose.

[0021] In the care mode, the high-temperature resistant push rod motor drives the movable sleeve to move and block the air outlet. The hot or cold air blown out by the blower cannot be directly discharged from the air outlet. Instead, it can only flow through the perforation on the connecting ring into the first chamber, thereby assisting the atomized care liquid in the first chamber to be blown out together, so that the atomized care liquid and the air are fully mixed and blown out. In the normal blowing mode, the movable sleeve does not move and does not block the air outlet. The perforation is closed by the cover ring. The hot or cold air does not need to flow through the first chamber. It can directly pass through the second chamber and be blown out from the air outlet, avoiding wind resistance caused by extra paths, ensuring smooth airflow, and balancing the hair care effect with normal drying efficiency.

[0022] Specifically, the atomizing device built into the container is the core component for atomizing the hair care solution. Its working principle is as follows: After the atomizing device is activated, it atomizes the liquid hair care solution in the container through its built-in atomizing components (such as ultrasonic transducers and high-pressure atomizing nozzles). If ultrasonic atomization is used, the transducer of the atomizing component will generate high-frequency vibrations, breaking the liquid care solution into tiny atomized particles (the droplet diameter is adapted to the hair care needs and can be evenly attached to the hair surface). If high-pressure atomization is used, the atomizing component will apply high pressure to the care solution, causing the care solution to be sprayed out through fine nozzles to form uniform atomized particles. The atomized care solution creates an atomized atmosphere inside the container. Since the outlet of the container is connected to the first chamber through a deformable connecting hose, and a slight negative pressure is formed inside the cavity when the blower is working (the air pressure difference formed by the air inlet and outlet), under the action of negative pressure, the atomized care solution in the container will be continuously transported to the first chamber along the connecting hose, completing the atomization and delivery process of the atomized care solution.

[0023] Preferably, to prevent radial offset, jamming, or tilting of the movable sleeve during reciprocating movement, a guide limiting fit structure is provided between the movable sleeve and the cavity, specifically including: guide grooves and guide protrusions: at least two guide grooves (preferably evenly distributed along the circumference, such as 3-4 grooves) are provided on the inner wall of the cavity of the air duct body extending axially, and the cross-section of the guide grooves is T-shaped, dovetail-shaped, or rectangular; correspondingly, guide protrusions are provided on the outer wall of the movable sleeve, which are adapted to the number and position of the guide grooves, and the guide protrusions are embedded in the guide grooves and slide in fit with the guide grooves.

[0024] The guide rib slides along the length of the guide groove, which not only guides the reciprocating movement of the movable sleeve, ensuring that the movement trajectory extends in a straight line along the axial direction and avoiding radial deviation, but also limits the displacement range of the movable sleeve, preventing excessive displacement of the movable sleeve from causing collision and damage with the push rod motor or the inner wall of the cavity.

[0025] Furthermore, the transmission component 13 includes a first connecting rod 16. The cover plate 12 is rotatably disposed in the second cavity 9 via a rotating shaft. A torsion spring is provided at the rotatable connection between the cover plate 12 and the second cavity 9. The torsion spring is used to keep the cover plate 12 in a connected state with the second cavity 9 open. One end of the rotating shaft extends into the first cavity 8 and is fixedly disposed with a second connecting rod 17. One end of the first connecting rod 16 is hinged to the second connecting rod 17, and the other end of the first connecting rod 16 is hinged to the cover ring 11 through the through hole 10. A first protrusion 18 is provided on the inner side of the cavity 2. A second protrusion 19 is provided on one side of the cover ring 11 extending to the outer side of the movable sleeve 5. The second protrusion 19 can press against the first protrusion 18 as the movable sleeve 5 moves, causing the cover ring 11 to move away from the through hole 10.

[0026] Specifically, the transmission component consists of a first connecting rod, a second connecting rod, a first protrusion, and a second protrusion. The cover plate is rotatably connected to the second cavity via a rotating shaft. A torsion spring is installed at the rotatable connection between the cover plate and the second cavity, and the spring force of the torsion spring always drives the cover plate to be in the open state of the second cavity. One end of the rotating shaft extends into the first cavity and is fixedly connected to the second connecting rod. One end of the first connecting rod is hinged to the second connecting rod, and the other end passes through a hole and is hinged to the cover ring. The first protrusion on the inner side of the cavity is a fixed structure, and one side of the cover ring extends to the outer side of the movable sleeve to form the second protrusion. When the high-temperature resistant push rod motor drives the movable sleeve to move towards the air outlet, the second protrusion moves synchronously with the movable sleeve. When the second protrusion presses against the first protrusion, the first protrusion exerts a reverse force on the second protrusion, driving the cover ring to move away from the connecting ring, thereby disengaging from the perforation and releasing the seal on the perforation. When the cover ring moves, it pulls the second connecting rod to rotate around the pivot through the first connecting rod. The second connecting rod drives the cover plate to overcome the elastic force of the torsion spring and rotate in the direction of closing the opening of the second cavity until the cover plate closes the second cavity. When the high-temperature push rod motor drives the movable sleeve to reset towards the air inlet, the second protrusion disengages from the pressure of the first protrusion, and the elastic force of the torsion spring pushes the cover plate to reset and open. The cover plate pulls the cover ring to reset through the second connecting rod and the first connecting rod, re-sealing the perforation and completing one linkage action.

[0027] Furthermore, the perforations 10 are distributed at intervals along the circumference.

[0028] Specifically, there are several perforations distributed at intervals along the circumference of the connecting ring. When the cover ring opens the perforations, the multiple perforations distributed at intervals can assist the airflow. At the same time, during the release of the care solution, they can also assist the atomized care solution to diffuse evenly and improve the mixing effect between the care solution and the airflow.

[0029] Furthermore, the cross-section of the second cavity 9 is a funnel shape with openings at both ends, and the diameter of the opening end of the second cavity 9 facing the air outlet 4 is smaller than the diameter of the opening end of the second cavity 9 facing the air inlet 3.

[0030] Specifically, the second cavity has a funnel-shaped cross-section with openings at both ends, and the diameter of the opening facing the air outlet is smaller than the diameter of the opening facing the air inlet. This structure allows the atomized care fluid delivered to the second cavity by the atomizing device to concentrate and converge towards the air outlet under the guidance of the funnel-shaped cavity, reducing the resistance of the air in the second cavity, ensuring smooth airflow, and not affecting the normal blowing function of the blower.

[0031] Furthermore, a sealing ring is provided at the contact point between the outer wall of the movable sleeve 5 and the inner wall of the air outlet 4.

[0032] Specifically, a sealing ring is installed at the contact point between the outer wall of the movable sleeve and the inner wall of the air outlet. The sealing ring fills the gap between the two to form a sealing structure. When the movable sleeve moves towards the air outlet and comes into contact with the air outlet, the sealing ring is squeezed, further enhancing the sealing performance and preventing the atomized care liquid from leaking from the gap between the movable sleeve and the air outlet into the air duct cavity, thus avoiding damage to the internal components of the air duct. It also avoids waste of care liquid, ensuring that all care liquid can be discharged from the air outlet with the air body, thereby improving the utilization rate of care liquid.

[0033] Furthermore, a sealing gasket is provided on the side of the cover ring 11 facing the perforation 10. The sealing gasket is tightly fitted to the side of the connecting ring 7 facing the air inlet 3 to enhance the sealing performance of the cover ring 11 when closing the perforation 10.

[0034] Specifically, a sealing gasket is installed on the side of the cover ring facing the perforation. When the cover ring closes the perforation under the action of the transmission component, the sealing gasket and the side of the connecting ring facing the air inlet fit tightly together, filling the tiny gap between the cover ring and the connecting ring, and enhancing the sealing performance when the cover ring closes the perforation. This prevents the atomized care liquid in the second chamber from leaking into the first chamber through the perforation, and then into the air duct cavity. It ensures that the atomized care liquid can be completely released from the opening of the second chamber, mixed with the air, and applied to the hair. At the same time, it avoids the care liquid leakage from causing corrosion or damage to components such as the transmission component and push rod motor.

[0035] Furthermore, a fixed pipe extends from the lower side of the air duct body 1, the receiving box 14 is threadedly fitted onto the fixed pipe, and the connecting hose is connected between the fixed pipe and the first cavity 8.

[0036] Specifically, the fixed tube extending from the lower side of the air duct body provides an installation carrier for the receiving box. The receiving box is threaded onto the fixed tube. The threaded connection is convenient to install and remove and has a firm connection. It is convenient for users to disassemble the receiving box to add hair care solution, change different types of care solution, or clean and maintain the receiving box. The connecting hose connects the fixed tube and the first chamber. The connecting hose has deformable characteristics and can adapt to the reciprocating movement of the movable sleeve. It ensures that the atomized care solution is stably delivered from the receiving box through the fixed tube and the connecting hose to the second chamber. It will not cause pipeline breakage or leakage due to the displacement of the movable sleeve, thus ensuring the stability of care solution delivery.

[0037] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hair dryer, comprising a hair dryer body (1), wherein the hair dryer body (1) has a cavity (2), and the cavity (2) has an air inlet (3) and an air outlet (4) on both sides, characterized in that: The cavity (2) is provided with a movable sleeve (5) and a high-temperature resistant push rod motor (6) for driving the movable sleeve (5) to move. The movable sleeve (5) can be driven by the high-temperature resistant push rod motor (6) to move back and forth towards the air outlet (4). The movable sleeve (5) is ring-shaped, and the outer wall of the movable sleeve (5) can abut against the inner wall of the air outlet (4). A connecting ring (7) is formed by protruding outward along the circumference of the inner ring of the movable sleeve (5). The connecting ring (7) is used to divide the inner ring of the movable sleeve (5) from the outside to the inside to form a first cavity (8) and a second cavity (9). The connecting ring (7) has a through hole (10) that can communicate with the first cavity (8) on the side facing the air inlet (3). The movable sleeve (5) is located inside the cavity. A cover ring (11) is movably provided at the ring to close the cover perforation (10). A cover plate (12) is rotatably provided in the second cavity (9) to close its opening. A transmission component (13) is provided in the first cavity (8) to drive the cover ring (11) and the cover plate (12) to move synchronously with the displacement of the movable sleeve (5). When the cover plate (12) is in the open state through the transmission component (13), the cover ring (11) is in the connected state of closing the perforation (10). A container (14) for holding hair care liquid is detachably connected to the air duct body (1). The outlet of the container (14) is connected to the first cavity (8) through a deformable connecting hose. The container (14) is equipped with an atomizing device that can atomize the care liquid inside its cavity.

2. The hair dryer according to claim 1, characterized in that: The transmission component (13) includes a first connecting rod (16). The cover plate (12) is rotatably disposed in the second cavity (9) via a rotating shaft. A torsion spring is provided at the rotatable connection between the cover plate (12) and the second cavity (9). The torsion spring is used to make the cover plate (12) be in a connected state with the opening of the second cavity (9) relatively open. One end of the rotating shaft extends into the first cavity (8) and is fixedly disposed with a second connecting rod (17). One end of the first connecting rod (16) is hinged to the second connecting rod (17). The other end of the first connecting rod (16) is hinged to the cover ring (11) through a through hole (10). A first protrusion (18) is provided inside the cavity (2). A second protrusion (19) is provided on one side of the cover ring (11) extending to the outside of the movable sleeve (5). The second protrusion (19) can press against the first protrusion (18) as the movable sleeve (5) moves, causing the cover ring (11) to move away from the through hole (10).

3. A hair dryer according to claim 1, characterized in that: The perforations (10) are distributed at intervals along the circumference.

4. A hair dryer according to claim 1, characterized in that: The second cavity (9) has a horn-shaped cross-section with openings at both ends, and the opening diameter of the second cavity (9) facing the air outlet (4) is smaller than the opening diameter of the second cavity (9) facing the air inlet (3).

5. A hair dryer according to claim 1, characterized in that: A sealing ring is provided at the contact point between the outer wall of the movable sleeve (5) and the inner wall of the air outlet (4).

6. A hair dryer according to claim 1, characterized in that: The cover ring (11) is provided with a sealing gasket on the side facing the perforation (10). The sealing gasket is tightly fitted to the side of the connecting ring (7) facing the air inlet (3) to enhance the sealing performance of the cover ring (11) when closing the perforation (10).

7. A hair dryer according to claim 1, characterized in that: The air duct body (1) has a fixed pipe extending from its lower side. The receiving box (14) is threadedly fitted onto the fixed pipe. The connecting hose is connected between the fixed pipe and the first cavity (8).

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