A hair dryer

Abstract

The utility model belongs to the technical field of household appliances, disclose a kind of hair dryer, including main body and the air nozzle of detachable installation in the air outlet end of main body, RFID module for identifying air nozzle is installed in main body, air nozzle includes first casing, second casing, label plate, RFID module and label plate inductive cooperation, one of first casing and second casing is detachably fixed with main body, second casing is fixedly sleeved with first casing to form the closed mounting cavity containing label plate by enclosing, first installation part extending along the axial direction is equipped in mounting cavity, and label plate is fixed in the outer periphery of first installation part.In the present application, label plate is hidden installation to mounting cavity, both reduce the probability of label plate knock or wear, can avoid damage in the process of drop test, reduce the rate of defective product, also avoid label plate damp damage, improve the installation, detection reliability of label plate.

Description

Technical Field

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

[0002] Existing hair dryers use a label and an identification element to identify the nozzle type, thus producing air at the corresponding temperature and speed based on the installed nozzle, enabling different blowing modes. Specifically, the nozzle has a surrounding rim, and a square label is affixed to the outer side of the rim. The nozzle and the main body are fixed together by the rim, so that the rim surrounds the outside of the main body. The label is located on the outer periphery of the radial detection area of ​​the identification element, completing the nozzle identification.

[0003] Hair dryers undergo drop tests before leaving the factory to assess their impact resistance. Specifically, the entire hair dryer and its accessories, including the nozzle, are subjected to drop tests separately. For example, the nozzle is dropped three times from ceramic floors at heights of 90 cm and 150 cm. Therefore, some existing hair dryers may experience scratches or damage to the label during the drop test, leading to failure and a high defect rate.

[0004] In addition, users usually use a hair dryer to dry their hair when it is wet. Therefore, during the use of existing hair dryers, water droplets on the hair will wet or soak the label. After use, when the hair dryer is stored, the label is in a humid environment. When used again, the chip on the label may be damaged by moisture or the sensor may become insensitive, causing the hair dryer to malfunction. Furthermore, the label is usually attached to the nozzle with adhesive. When it is frequently soaked by water droplets from the hair, the adhesion reliability of the label decreases, and the label may curl or peel up, affecting the sensitivity of the detection. Utility Model Content

[0005] This invention provides a hair dryer that solves the technical problems of existing hair dryers that use labels for nozzle identification, such as label damage during factory drop tests leading to a high defect rate, and the label becoming wet or soaked by hair, resulting in insensitive nozzle identification.

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

[0007] This utility model provides a hair dryer, including a main body and a nozzle detachably installed at the air outlet of the main body. The main body is equipped with an RFID module (Radio Frequency Identification Board) for identifying the nozzle. The nozzle includes a first housing, a second housing, and a label plate. The RFID module is inductively coupled with the label plate. One of the first housing and the second housing is detachably fixed to the main body. The second housing is fixedly sleeved with the first housing to form a closed mounting cavity for accommodating the label plate. The mounting cavity is provided with a first mounting part extending axially. The label plate is fixed to the outer periphery of the first mounting part.

[0008] The hair dryer provided by this utility model features an RFID module installed within its main body. The nozzle includes a label plate, and the RFID module works in conjunction with the label plate. Specifically, the RFID module provides a coupling signal that matches the signal of the label plate. When the nozzle is installed in the main body, a wireless communication link is established between the antenna plate of the RFID module and the label plate, enabling energy transmission and data exchange. This allows the RFID reader / writer module to read the signal within the label plate, thus identifying the nozzle's location. When the hair dryer has multiple nozzles, nozzle type identification is achieved. The hair dryer performs actions adapted to the nozzle based on the signals read and written by the reader / writer module, blowing air at the temperature and speed corresponding to that nozzle. This expands the hair dryer's multiple operating modes and meets diverse user needs. Compared to detection methods using magnetic components and magnetic induction modules, this detection method utilizes the label plate to store precise and diverse information to adjust the hair dryer's operating parameters accordingly, resulting in more accurate nozzle identification. The air nozzle includes a first housing and a second housing. The second housing is fixedly sleeved with the first housing to form a closed mounting cavity for accommodating the label plate. On one hand, the mounting cavity allows for concealed installation of the label plate, providing physical protection and reducing the probability of impacts or wear, thus preventing damage during drop tests and lowering the defect rate. It also prevents label plate failure and provides waterproof protection, preventing the label plate from getting wet from hair, which could lead to unreliable connections, and avoiding detection insensitivity issues in humid environments. This improves the installation reliability of the label plate and enhances the stable communication connection between the label plate and the RFID module, thereby improving the sensitivity and accuracy of the air nozzle's detection. Furthermore, the label plate being hidden within the mounting cavity makes the air nozzle appear more uniform and aesthetically pleasing, increasing user purchase intent.

[0009] On the other hand, the mounting cavity can form a heat-insulating cavity for the label plate. When the nozzle is fixed to the main body through either the first housing or the second housing, the heat from the hot air blown out by the main body is buffered and lost when passing through the mounting cavity, thus reducing the heat received by the label plate and preventing the chip on the label plate from overheating and losing its function. This makes the label plate and RFID module reliably and accurately detect each other, improves the sensitivity and effectiveness of the nozzle identification, extends the service life of the label plate, and also allows more heat from the hot air to be transferred to the air outlet and the user's hair, improving the hair drying efficiency.

[0010] The mounting cavity has a first mounting part extending axially. The label plate is fixed on the outer periphery of the first mounting part. The label plate is easy to install, has reliable radial positioning, and a stable structure. After the nozzle is aligned with the main body, the label plate and the RFID module can be aligned and sensed, ensuring effective sensing.

[0011] In a preferred embodiment, the nozzle further includes a surrounding wall around the outer periphery of the first mounting portion, the first mounting portion and the surrounding wall being located in the first housing to form an annular limiting groove, the second housing being sleeved and fixed to the surrounding wall and pressing the label plate axially in the limiting groove.

[0012] By setting up a enclosure, the first mounting part and the enclosure form an annular limiting groove, which achieves dual limiting on the radial inner and outer sides of the label plate. During the assembly process, it forms a centering guide, realizing accurate installation of the label plate. At the same time, it improves the fixing reliability of the label plate after installation. In the event of the nozzle falling off, the label plate remains stably installed with the nozzle and will not shift in position. The second housing is sleeved and fixed to the enclosure, pressing the label plate axially in the limiting groove. The fixing of the first housing and the second housing completes the fixing of the label plate at the same time, and the installation is completed in one step, with high assembly efficiency.

[0013] In a preferred embodiment, the second housing includes a cover that covers the opening of the limiting groove and a pressure rib protruding from the inner side of the cover. The pressure ribs are arranged circumferentially and include a protruding rib that limits the outer periphery of the label plate and a pressure holding rib that is bent relative to the protruding rib to press the label plate.

[0014] The second housing includes a cover and a retaining rib. The cover and the limiting groove form an installation cavity, which provides heat insulation and physical protection for the label plate. At the same time, the protruding ribs provide radial limiting for the outer periphery of the label plate, and the retaining ribs provide axial limiting for the label plate. This multi-directional approach ensures the stable installation of the protruding ribs. The retaining ribs form a line-surface contact with the label plate, improving the clamping effect.

[0015] In a preferred embodiment, the label plate includes a protrusion, and the enclosure is provided with an anti-rotation portion that limits the rotation of the protrusion.

[0016] By incorporating protrusions on the label plate and anti-rotation features on the enclosure, a rotation-resistant fit is achieved between the label plate and the enclosure, preventing signal transmission issues between the label plate and the RFID module caused by rotational displacement. The protrusions also provide directional guidance during label installation, preventing incorrect installation by the assembler.

[0017] In a preferred embodiment, the enclosure wall is provided with two recessed lugs from the inside out, the two lugs forming a retrieval portion symmetrically along the radial direction, and one of the lugs forming the anti-rotation portion.

[0018] The enclosure is provided with two lugs, which are symmetrically arranged radially to form a pick-up part, so as to facilitate the user to disassemble and install the air nozzle. The operation is convenient. One of the lugs forms the anti-rotation part, which forms an anti-rotation limit for the label plate, realizing the integration of the structure. The internal space of the air nozzle is used in a reasonable way, without the need to expand the radial dimension of the air nozzle, thus realizing the miniaturization of the air nozzle.

[0019] In a preferred embodiment, the first mounting portion includes an annular sleeve wall and a protrusion protruding from the outer side of the sleeve wall, the label plate is sleeved on the sleeve wall, and the label plate is provided with a notch that anti-rotationally engages with the protrusion.

[0020] The first mounting part includes an annular socket wall and a protrusion on the outer side of the socket wall. The annular socket wall forms an all-round limit for the inner circle of the label plate, and the protrusion cooperates with the notch of the label plate to form an anti-rotation limit. Therefore, the radial and circumferential stable limit of the label plate and the first mounting part is completed, preventing the label plate from rotating or shifting, thereby ensuring the accurate matching between the label plate and the RFID module and realizing accurate and sensitive identification of the nozzle.

[0021] In a preferred embodiment, the protrusion is a stud provided on the first housing, and the second housing is provided with a screw hole corresponding to the stud. A screw passes through the screw hole and locks onto the stud to fix the first housing and the second housing.

[0022] The protrusion is a stud, and the first and second housings are locked together by screws and studs. At the same time, the stud is reused as a protrusion to prevent the label plate from rotating and limit its movement. No additional anti-rotation structure is needed, which simplifies the structure of the first housing and makes the molding and processing of the first housing easy.

[0023] In a preferred embodiment, the first mounting part includes a first limiting rib and a second limiting rib, the label plate is sleeved on the first limiting rib and the second limiting rib, the first limiting rib extends in an arc shape along the inner circumference of the label plate, the second limiting rib arches outward radially, and the label plate is provided with a notch that cooperates with the second limiting rib to prevent rotation.

[0024] The first mounting part includes a first limiting rib and a second limiting rib. It is compact in size and simple in structure. The label plate is sleeved on the first limiting rib and the second limiting rib. The first limiting rib is arc-shaped and extends to limit the connection on the inner side of the label plate, so as to achieve reliable radial limiting. The second limiting rib arches outward radially. The label plate is provided with a notch that cooperates with the second limiting rib to prevent rotation. Thus, while achieving radial limiting of the label plate, it also achieves circumferential anti-rotation limiting of the label plate, realizing the reuse of component functions.

[0025] In a preferred embodiment, the label plate has an identification surface for setting a chip and a capacitor, the first housing is detachably fixed to the main body, and the second housing is sleeved on the outer periphery of the first housing, with the identification surface of the label plate facing the second housing;

[0026] By aligning the label's recognition surface with the second housing, which is away from the first housing that is close to the main heat source, this arrangement, based on the primary heat insulation formed by the mounting cavity, keeps the label's chip and capacitor away from the heat source, thus forming a secondary heat insulation. This further prevents thermal damage that could cause functional impairment and recognition failure, and extends the service life.

[0027] In a preferred embodiment, the nozzle further includes a third housing that is detachably fitted onto the outside of the second housing for heat insulation;

[0028] In a preferred embodiment, the second housing includes a sleeve portion that fits into the first housing and a flat air outlet. The air outlet has multiple outwardly protruding and spaced-apart ribs on both sides. Each rib extends along the air outlet direction and forms a strip-shaped heat dissipation groove between two adjacent ribs.

[0029] Since most hair dryers use a hot air drying mode, the nozzle can become hot after use due to the hot air. Therefore, a third shell is designed to form a heat insulation layer, preventing users from burning their hands when removing the nozzle for storage. Multiple ribs are used to create a locally thickened heat insulation structure on both sides of the nozzle. At the same time, strip-shaped heat dissipation grooves are formed between adjacent ribs. This eliminates the need to thicken the entire side wall of the nozzle, achieving both heat prevention and a lightweight nozzle that is easy for users to handle, thus improving the user experience.

[0030] In a preferred embodiment, the main body includes a suction member, and the first housing further includes a second mounting portion for mounting a magnet, the label plate being located on the outer periphery of the second mounting portion, and the magnet engaging magnetically with the suction member.

[0031] More preferably, the second mounting part is a mounting groove with an opening facing the main body, the magnet is embedded in the mounting groove, a cover plate is provided at the opening of the mounting groove, and screws pass through the cover plate, the magnet and the mounting groove to lock onto the second housing.

[0032] By providing a second mounting part for installing magnets in the first housing, the first housing and the main body are attracted by magnets, enabling flexible assembly and disassembly of the nozzle. Users can replace different nozzles to achieve different hair-drying modes. The second mounting part is a mounting groove with its opening facing the main body. The magnet is embedded in the mounting groove, and a cover plate is provided at the opening of the mounting groove. Screws pass through the cover plate, the magnet, and the mounting groove and lock them onto the second housing. When assembling the nozzle, the magnet, the first housing, and the second housing are assembled with just one screw, making assembly simple. The magnet is also housed in the closed cavity formed by the mounting groove and the cover plate, providing good heat insulation and physical protection for the attracted magnet. The nozzle and the main body are permanently and stably installed.

[0033] Alternatively, more preferably, an iron sheet is fixed to the side of the magnet away from the attracting member.

[0034] By fixing an iron plate on the side of the magnet away from the attractor, the iron plate can optimize the magnetic field arrangement of the magnet and block the magnetic lines of force of the magnet, so that more magnetic lines of force of the magnet are directed towards the attractor, thereby increasing the magnetic attraction between the magnet and the attractor. The nozzle is firmly installed with the main body and will not fall off during use. Attached Figure Description

[0035] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0036] Figure 1 This is a schematic diagram of the structure of the hair dryer in Embodiment 1 of this utility model;

[0037] Figure 2 This is a partial structural schematic diagram of the hair dryer in Embodiment 1 of this utility model;

[0038] Figure 3 This is a schematic diagram of the exploded structure of the nozzle in Embodiment 1 of this utility model;

[0039] Figure 4 This is a schematic diagram of the exploded structure of the nozzle from another angle in Embodiment 1 of this utility model;

[0040] Figure 5 This is a schematic diagram of the label plate in Embodiment 1 of this utility model;

[0041] Figure 6This is a schematic diagram of the exploded structure of the hair dryer in Embodiment 1 of this utility model;

[0042] Figure 7 This is a magnified view of a portion of the nozzle in Embodiment 1 of this utility model;

[0043] Figure 8 This is a schematic diagram of the exploded structure of the nozzle in Embodiment 2 of this utility model;

[0044] Figure 9 This is a schematic diagram of the exploded structure of the nozzle in Embodiment 3 of this utility model;

[0045] Figure 10 This is a cross-sectional structural diagram of the nozzle in Embodiment 3 of this utility model;

[0046] Figure 11 This is a schematic diagram of the exploded structure of the nozzle in Embodiment 4 of this utility model;

[0047] Figure 12 This is a cross-sectional structural diagram of the nozzle in Embodiment 4 of this utility model;

[0048] Figure 13 This is a cross-sectional structural diagram of the nozzle in Embodiment 5 of this utility model;

[0049] Figure 14 This is a schematic diagram of the exploded structure of the nozzle in Embodiment 5 of this utility model;

[0050] Figure 15 A circuit diagram of a hair dryer in one embodiment.

[0051] List of components and reference numerals:

[0052] 10 Main body; 11. Suction component; 20. RFID module; 30. Air nozzle; 300. Mounting cavity; 301. First housing; 3011. Locking position; 302. Second housing; 303. Third housing; 304. Square mating part; 3021. Raised rib; 3022. Pressing rib; 3023. Rib; 3024. Heat dissipation groove; 3025. Screw hole; 3026. Locking screw; 3027. Anti-slip material Rib; 3028 Air outlet rib; 31, First mounting part; 311, First limiting rib; 312, Second limiting rib; 313, Sleeve wall; 314, Protrusion; 32, Second mounting part; 33, Enclosure wall; 331, Lug; 34, Limiting groove; 35, Magnet; 36, Cover plate; 37, Screw; 38, Iron sheet; 40, Label plate; 401, Protrusion; 41, Chip; 42, Capacitor; 43, Notch. Detailed Implementation

[0053] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0054] Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0055] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] like Figure 1 , 2As shown, in a preferred embodiment, this utility model provides a hair dryer, including a main body 10 and a nozzle 30 detachably installed at the air outlet of the main body 10. An RFID module 20 (Radio Frequency Identification Board) for identifying the nozzle 30 is installed inside the main body 10. Figure 3 As shown, the nozzle 30 includes a first housing 301, a second housing 302, and a label plate 40. The RFID module 20 is inductively coupled with the label plate 40. Specifically, the RFID module 20 is used to provide a coupling signal that matches the signal of the label plate 40. One of the first housing 301 and the second housing 302 is detachably fixed to the main body 10. The second housing 302 is fixedly sleeved with the first housing 301 to form a closed mounting cavity 300 that accommodates the label plate 40. The mounting cavity 300 is provided with a first mounting part 31 extending axially. The label plate 40 is fixed to the outer periphery of the first mounting part 31.

[0059] It should be noted that the combination of the label plate 40 and the RFID module 20 in this invention can be used for the position identification and / or type identification of the nozzle 30. When the hair dryer includes one nozzle 30, the label plate 40 and the RFID module 20 work together to identify the position of the nozzle 30; that is, when the nozzle 30 is detected to be installed in place, the hair dryer starts. When the hair dryer includes multiple nozzles 30, the label plate 40 and the RFID module 20 work together to identify the position and type of the nozzles 30. The nozzle identification principle will be described in detail later.

[0060] The hair dryer provided in this embodiment, by installing an RFID module 20 within the main body 10, and the nozzle 30 including a tag plate 40, uses the RFID module 20 to provide a coupling signal that matches the signal of the tag plate 40. When the nozzle 30 is installed in the main body 10, a wireless communication link is established between the antenna plate of the RFID module 20 and the tag plate 40, realizing energy transmission and data exchange, so that the RFID read / write module 20 can read the signal in the tag plate 40 and identify the nozzle 30. Compared with the detection method using magnetic elements and a magnetic induction module 20, this detection method utilizes the tag plate 40 to store accurate and diverse information to adjust the operating parameters of the hair dryer accordingly, resulting in more accurate nozzle 30 identification. The nozzle 30 includes a first housing 301 and a second housing 302. The second housing 302 is fixedly sleeved with the first housing 301 to form a closed mounting cavity 300 for accommodating the label plate 40. On one hand, the mounting cavity 300 allows for concealed installation of the label plate, providing physical protection. This reduces the probability of the label plate being bumped or worn, preventing damage during drop tests and lowering the defect rate. It also prevents label plate failure and provides waterproof protection, preventing the label plate from getting wet from hair, which could cause connection instability, and avoiding detection insensitivity issues in humid environments. This improves the installation reliability of the label plate. Simultaneously, it enhances the stable communication connection between the label plate and the RFID module, improving the sensitivity and accuracy of the nozzle's detection. Furthermore, the label plate being hidden within the mounting cavity makes the nozzle's appearance more uniform and aesthetically pleasing, increasing user purchase intent.

[0061] On the other hand, the mounting cavity 300 can form a heat-insulating cavity for the label plate 40. When the nozzle 30 is fixed to the main body 10 through either the first housing 301 or the second housing 302, the heat from the hot air blown out by the main body 10 is buffered and lost when passing through the mounting cavity 300. This reduces the heat received by the label plate 40, prevents the chip 41 on the label plate 40 from overheating and losing its function, and enables reliable and accurate detection between the label plate 40 and the RFID module 20. This improves the sensitivity and effectiveness of the nozzle 30's identification, extends the service life of the label plate 40, and also allows more heat from the hot air to be transferred to the air outlet and the user's hair, improving hair drying efficiency.

[0062] The mounting cavity 300 has a first mounting part 31 extending axially. The label plate 40 is fixed to the outer periphery of the first mounting part 31. The label plate 40 is easy to install, has reliable radial positioning, and a stable structure. After the nozzle 30 is aligned and installed with the main body 10, the label plate 40 and the RFID module 20 can be aligned and sensed, ensuring effective sensing.

[0063] This invention does not limit the specific method of fixing the label plate to the first mounting part, which will be described in detail later. It is understood that even if this invention uses adhesive to bond the label plate to the first mounting part, the mounting cavity 300 can prevent water droplets from hair from entering, thus avoiding any impact on the fixing of the label plate to the first mounting part and ensuring reliable fixing of the label plate.

[0064] It is understood that the enclosed mounting cavity 300 in this utility model can be formed by the first housing 301 and the second housing 302 in close fit, with a small gap between them. Alternatively, a sealing element can be provided between the first housing 301 and the second housing 302 to further seal the gap.

[0065] This utility model does not limit the specific structure of the nozzle 30, which can be selected from any of the following embodiments:

[0066] Implementation Example 1, such as Figure 1-7 As shown, the nozzle 30 includes a surrounding wall 33 that surrounds the outer periphery of the first mounting portion 31, such as... Figure 3 As shown, the first mounting part 31 is an annular sleeve wall located in the first housing 301. The first mounting part 31 and the surrounding wall 33 are both located in the first housing 301 to form an annular limiting groove 34. The second housing 302 is sleeved and fixed to the surrounding wall 33 and presses the label plate 40 axially in the limiting groove 34.

[0067] More preferably, such as Figure 4 As shown, the second housing 302 includes a cover that fits with the groove of the limiting groove 34 and a pressure rib protruding from the inner side of the cover. The pressure ribs are arranged at intervals along the circumference. The pressure ribs include a protruding rib 3021 that limits the label plate 40 to the outer periphery and a pressure holding rib 3022 that is bent relative to the protruding rib to press the label plate 40.

[0068] By setting up the enclosure 33, the first mounting part 31 and the enclosure 33 form an annular limiting groove 34, which provides dual limiting for the radial inner and outer sides of the label plate 40. This creates a centering guide during assembly, ensuring accurate installation of the label plate 40. Simultaneously, once installed, it improves the fixing reliability of the label plate 40. Even if the nozzle 30 falls off, the label plate 40 remains stably installed with the nozzle 30 without positional displacement. The second housing 302 is sleeved and fixed to the enclosure 33, pressing the label plate 40 axially within the limiting groove 34. Figure 3 , 4 When installing the label plate 40, the label plate 40 is first placed in the limiting groove 34 to pre-install it with the first housing. Then, the first housing and the second housing are fixed, thus completing the fixing of the label plate. The label plate 40 is fixed at the same time as the first housing 301 and the second housing 302, and the installation is completed in one step, resulting in high assembly efficiency.

[0069] The second housing 302 includes a cover and a retaining rib. The cover and the limiting groove 34 enclose the mounting cavity 300 to achieve heat insulation and physical protection for the label plate 40. At the same time, the protruding rib forms a radial limit on the outer periphery of the label plate 40, and the retaining rib 3022 limits the axial limit on the label plate 40. This ensures the stable installation of the protruding rib from multiple directions. The retaining rib 3022 forms a line-surface contact with the label plate 40 to improve the pressing effect.

[0070] like Figure 1 As shown, preferably, the main body 10 includes a suction member 11, such as a magnet 35 or an iron block, and the first housing 301 also includes a second mounting part 32 for mounting the magnet 35. The label plate 40 is located on the outer periphery of the second mounting part 32, and the magnet 35 is magnetically attracted to the suction member 11.

[0071] like Figure 4 As shown, more preferably, the second mounting part 32 is a mounting groove with an opening facing the main body 10. The magnet 35 is embedded in the mounting groove, and a cover plate 36 is provided at the opening of the mounting groove. Screws pass through the cover plate 36, the magnet 35, and the mounting groove and are locked onto the second housing 302. More preferably, an iron piece 38 is also fixed on the side of the magnet 35 away from the attracting member 11.

[0072] By providing a second mounting part 32 for mounting magnet 35 in the first housing 301, the first housing 301 and the main body 10 are attracted together by the magnet 35, enabling flexible assembly and disassembly of the nozzle 30. Users can replace different nozzles 30 to achieve different hair-drying modes. The second mounting part 32 is a mounting groove with its opening facing the main body 10. The magnet 35 is embedded in the mounting groove. A cover plate 36 is provided at the opening of the mounting groove. Screws 37 pass through the cover plate 36, the magnet 35, and the mounting groove and lock them onto the second housing 302. When assembling the nozzle 30, the assembly of the magnet 35, the first housing 301, and the second housing 302 is completed with just one screw, making assembly simple. The magnet 35 is also accommodated in the closed cavity formed by the mounting groove and the cover plate 36, providing good heat insulation and physical protection for the attracted magnet 35. The nozzle 30 and the main body 10 can be installed stably and permanently.

[0073] By fixing an iron plate 38 to the side of the magnet 35 away from the attractor 11, the iron plate 38 can optimize the magnetic field arrangement of the magnet 35 and block the magnetic lines of force of the magnet 35, so that more magnetic lines of force of the magnet 35 are directed toward the attractor 11, thereby increasing the magnetic attraction of the magnet 35 and the attractor 11. The nozzle 30 is firmly installed with the main body 10 and will not fall off during use.

[0074] In this embodiment, the nozzle 30 is detachably fixed by the magnet 35 and the suction member 11. Of course, as an alternative embodiment of this embodiment, the nozzle 30 is fixedly connected to the main body 10 by a snap fastener.

[0075] like Figure 2As shown, preferably, after the nozzle 30 is engaged, the distance d between the antenna plate and the tag plate 40 satisfies 4mm ≤ d ≤ 50mm, providing sufficient space for installation and facilitating installation while avoiding excessive distance from affecting signal reception. To avoid signal interference from the magnet 35 to the antenna plate, preferably, the tag plate is arranged around the outer periphery of the magnet, and the tag plate is annular or extends along the circumference of the magnet in an arc shape with a notch. The radial distance W1 between the magnet 35 and the tag plate satisfies 5mm ≤ W1 ≤ 30mm. Of course, more preferably, the radial distance W2 between the magnet 35 and the antenna plate also satisfies 5mm ≤ W2 ≤ 30mm. To avoid signal interference between magnet 41 and antenna plate 60 and label plate 50 when W1 or W2 is too small (less than 5mm), and to avoid problems such as loose arrangement and large nozzle or body outer diameter when W1 or W2 is too large (greater than 30mm), 5mm≤W1≤30mm or 5mm≤W2≤30mm can achieve compact installation, miniaturize the blower, and reduce the risk of interference between magnet and antenna plate 60 and label plate 50.

[0076] Of course, as another alternative embodiment of this example, the nozzle 30 is detachably fixed by the magnet 35 and the suction member 11. The magnet 35 is a ring magnet, and the ring magnet is arranged around the outer periphery of the label plate; or, the magnet 35 includes a plurality of magnetic blocks arranged at intervals along the outer or inner periphery of the label plate. In fact, in order to reduce the signal interference of the magnet to the antenna plate and the label plate, it is preferable that the projections of the three in the radial direction of the main body do not coincide.

[0077] In this embodiment, preferably, as shown below, Figure 5 As shown, the label plate 40 has an identification surface with a chip 41 and a capacitor 42, combined with Figure 3 The first housing 301 is detachably fixed to the main body 10, and the second housing 302 is sleeved on the outer periphery of the first housing 301, with the identification surface of the label plate 40 facing the second housing 302.

[0078] By aligning the recognition surface of the label plate 40 towards the second housing 302, i.e., away from the first housing 301 which is close to the heat source of the main body 10, and utilizing the mounting cavity 300 to form primary heat insulation, this arrangement further protects the chip 41 and capacitor 42 of the label plate 40 from the heat source, thus forming secondary heat insulation. This further prevents thermal damage that could lead to functional impairment and recognition failure, extending the service life. It is understood that the orientation of the label plate 40 also applies to other embodiments of this invention.

[0079] As a preferred option, such as Figure 5As shown, the label plate 40 includes a protrusion 401, and the surrounding wall 33 is provided with an anti-rotation part that limits the rotation of the protrusion 401, such as a recess from the inside out. The label plate 40 includes a chip 41 and a capacitor 42, which are disposed on the protrusion 401, realizing reasonable use of space in the label plate 40 and facilitating the miniaturization of the label plate 40.

[0080] By providing a protrusion 401 on the label plate 40 and an anti-rotation part on the enclosure 33, an anti-rotation fit is achieved between the label plate 40 and the enclosure 33, preventing abnormal signal communication between the label plate 40 and the RFID module 20 after rotational displacement. The protrusion 401 can also provide directional guidance during label plate 40 installation, preventing incorrect installation by the assembler.

[0081] like Figure 6 , 7 As shown in this embodiment, to avoid the nozzle getting too hot to handle, the second housing 302 includes a sleeve portion that fits into the first housing 301 and a flat air outlet 30. The air outlet 30 has multiple outwardly protruding and spaced-apart ribs 3023 on both sides. Each rib extends into a strip along the air outlet direction, forming a strip-shaped heat dissipation groove 3024 between two adjacent ribs.

[0082] Since most hair dryers use a hot air drying mode, the nozzle 30 may become hot after use due to the hot air. Therefore, a third shell is designed to form a heat insulation layer to prevent users from burning their hands when removing the nozzle 30 for storage. Multiple ribs are used to create a locally thickened heat insulation structure on both sides of the nozzle 30. At the same time, a strip-shaped heat dissipation groove 3024 is formed between two adjacent ribs. This eliminates the need to thicken the entire side wall of the nozzle 30, achieving both heat prevention and a lightweight design that makes the nozzle 30 easier and more convenient for users to handle, thus improving the user experience.

[0083] It is understood that the above-mentioned anti-scalding design is still applicable to other embodiments of this utility model.

[0084] Implementation Example 2, such as Figure 8 As shown, the main difference between this embodiment and Embodiment 1 lies in the structure of the first mounting part.

[0085] like Figure 8As shown in this embodiment, the first housing 301 is detachably fixed to the main body 10. The first mounting part 31 is located on the second housing 302 and includes a first limiting rib 311 and a second limiting rib 312. The label plate 40 is sleeved on the outside of the first limiting rib 311 and the second limiting rib 312. The first limiting rib 311 extends in an arc shape along the inner circumference of the label plate 40, and the second limiting rib 312 arches radially outward. The label plate 40 is provided with a notch 43 that cooperates with the second limiting rib 312 to prevent rotation. The notch 43 is either a discontinuous opening or a groove.

[0086] like Figure 8 As shown, when installing the label plate 40, the label plate 40 is first sleeved on the outside of the first limiting rib 311 and the second limiting rib 312 to achieve radial pre-limiting and the label plate 40 is pre-fixed with the second housing. Then the first housing and the second housing are fixedly pressed to hold the label plate, thus completing the fixing of the label plate.

[0087] The first mounting part 31 includes a first limiting rib 311 and a second limiting rib 312. It is small in size and simple in structure. The label plate 40 is sleeved on the outside of the first limiting rib 311 and the second limiting rib 312. The first limiting rib 311 is arc-shaped and extends to limit the connection on the inner side of the label plate 40, so as to achieve reliable radial limiting. The second limiting rib 312 arches outward radially. The label plate 40 is provided with a notch 43 that cooperates with the second limiting rib 312 to prevent rotation. Thus, while achieving radial limiting of the label plate 40, circumferential anti-rotation limiting of the label plate 40 is also achieved, realizing the reuse of component functions.

[0088] Implementation Example 3, such as Figure 9-10 As shown, the main difference between this embodiment and Embodiment 1 lies in the structure of the first mounting part.

[0089] The nozzle 30 includes a first housing 301 and a second housing 302, wherein the first housing 301 is detachably fixed to the main body 10.

[0090] like Figure 9 As shown, the first mounting part 31 includes an annular sleeve wall 313 and a protrusion 314 protruding from the outer side of the sleeve wall. The label plate 40 is sleeved on the sleeve wall 313, and the label plate 40 is provided with a notch 43 that cooperates with the protrusion to prevent rotation. More preferably, the sleeve wall 313 is located in the first housing 301, the protrusion 314 is a stud provided in the first housing 301, and the second housing 301 is provided with a screw hole 3025 corresponding to the stud. The locking screw 3026 passes through the screw hole 3025 and locks to the stud to fix the first housing 301 and the second housing 302.

[0091] The first mounting part 31 includes an annular socket wall and a protrusion on the outer side of the socket wall. The annular socket wall forms an all-round limit on the inner circle of the label plate 40, and the protrusion cooperates with the notch 43 of the label plate 40 to form an anti-rotation limit. Therefore, the radial and circumferential stable limit of the label plate 40 and the first mounting part 31 is completed, preventing the label plate 40 from rotating or shifting, thereby ensuring the accurate matching between the label plate 40 and the RFID module 20, and realizing the accurate and sensitive identification of the nozzle 30.

[0092] The protrusion is a stud provided on the second housing 302. The first housing 301 and the second housing 302 are locked and fixed by screws and studs. At the same time, the stud is reused as a protrusion to limit the rotation of the label plate 40. No additional anti-rotation structure is needed, which simplifies the structure of the second housing 302 and makes the molding and processing of the second housing 302 easy.

[0093] like Figure 9 As shown, in this embodiment, the nozzle 30 also includes a surrounding wall 33 enclosing the outer periphery of the first mounting portion 31. Both the first mounting portion 31 and the surrounding wall 33 are located within the first housing 301 to form an annular limiting groove 34. The second housing 302 is sleeved and fixed to the surrounding wall 33, pressing the label plate 40 axially within the limiting groove 34. The label plate 40 includes a protrusion 401, and the surrounding wall 33 is provided with an anti-rotation portion that limits and prevents rotation of the protrusion 401. The surrounding wall 33 has two recessed lugs 331 extending from the inside out, forming a symmetrically arranged pick-up portion along the radial direction, with one lug forming an anti-rotation portion.

[0094] The enclosure 33 is provided with two lugs, which form a pick-up part symmetrically along the radial direction to facilitate the user to disassemble and install the nozzle 30. The operation is convenient. One of the lugs forms an anti-rotation part to prevent the label plate 40 from rotating and to achieve structural integration. The internal space of the nozzle 30 is used reasonably, and there is no need to expand the radial dimension of the nozzle 30, thus achieving the miniaturization of the nozzle 30.

[0095] In addition, such as Figure 10 As shown, in this embodiment, the first housing 301 fixes the magnet 35 with screws 37 to attract it to the attraction member 11 of the main body 10, so that the nozzle 30 can be detachably fixed to the main body 10. The first housing 301 and the second housing 302 are fixed by locking screws 3026.

[0096] In this embodiment, to prevent burns when handling the nozzle, the nozzle 30 also includes a third housing 303 that is detachably fitted onto the outside of the second housing 302 for heat insulation. It is understood that the above-described anti-scalding design is also applicable to other embodiments of this invention.

[0097] Optionally, the nozzle shape provided in this embodiment can achieve a smoothing effect and can be a smoothing nozzle.

[0098] Implementation Example 4, such as Figure 11-12 As shown, this embodiment provides a main structure in the form of a square cylinder. Preferably, the four sides of the square cylinder are transitioned by rounded corners.

[0099] Preferably, the nozzle 30 is provided with a square docking portion 304 that mates with the main body 10, the mounting cavity 300 is located inside the square docking portion 304 and has four rounded corners, and the label plate 40 is square and mates with the mounting cavity 300. With this arrangement, it is not necessary to provide an anti-rotation structure between the label plate and the nozzle.

[0100] It should be noted that, as Figure 12 As shown, the nozzle in this embodiment can be selected to include a first housing and a second housing. The square docking part 304 is formed by assembling the first housing and the second housing. In fact, the nozzle can be a one-piece structure.

[0101] As a preferred option, such as Figure 12 As shown, anti-slip ribs 3027 are provided on both sides of the nozzle to provide friction for picking up and removing the nozzle, making it convenient for users to assemble and disassemble the nozzle.

[0102] As a preferred option, such as Figure 12 As shown, a wave-shaped air outlet rib 3028 is provided at the air outlet end of the nozzle, which is conducive to styling design during the blow-drying process. This nozzle can be used as a styling nozzle.

[0103] Implementation Example 5, such as Figure 13-14 As shown, the main difference between this embodiment and embodiment 1 is that the first housing 301 and the second housing 302 are fixedly connected by a snap fastener, eliminating the need for screws, screw holes, and studs.

[0104] Optionally, such as Figure 13 As shown, the second housing 302 is fitted inside the first housing 301. The second housing 302 is provided with a retaining rib 3029, and the first housing 301 is provided with a retaining position 3011. The retaining rib is engaged and fixed with the buckle.

[0105] In this embodiment, preferably, the first mounting part 31 protrudes from the first housing 301, and the label plate 40 is interference-fitted to the first mounting part 31 for fixation.

[0106] The nozzle provided in this embodiment has multiple arc-shaped protrusions at the air outlet to provide a flow-guiding and buffering effect, making it a gentle air nozzle.

[0107] It is understood that the hair dryer provided by this utility model may include one or more nozzles, and the nozzles may be selected from any of the above embodiments or a combination thereof.

[0108] like Figure 15 As shown, in a preferred embodiment, the recognition principle of the nozzle 30 is as follows:

[0109] The main body 10 houses a control board, a motor connected to the control board, and a heating element. The RFID module 20 includes a read / write module 20 and an antenna board. The antenna board provides a coupling signal that matches the signal of the tag 40. The read / write module 20 reads the signal from the tag 40. The control board is electrically connected to the read / write module 20. The nozzle 30 is mounted on the main body 10. The antenna board communicates with the tag 40 inside the nozzle 30, enabling the read / write module 20 to read the signal from the tag 40. The control board controls the motor and / or the heating element to perform actions adapted to the nozzle 30 based on the signals read and written by the read / write module 20. Preferably, the main body 10 also includes a temperature sensing element connected to the control board to detect the temperature of the heating element or the airflow, preventing damage due to overheating.

[0110] By configuring the control board and read / write module 20 accordingly, when the nozzle 30 is used for the first time, the air temperature and speed settings are set by the system default. Each nozzle 30 is equipped with an independent memory function; adjusting the air temperature and speed will automatically remember the current air temperature and speed settings for that nozzle 30, and the settings will be used again the next time the nozzle 30 is used. It should be noted that, in a preferred embodiment of this invention, considering the efficient use of the installation space of the main body 10 shell, the read / write module 20, control board, and antenna board are set separately. In practice, when there is sufficient space in the shell, the read / write module 20 can be integrated into the control board, or the antenna board and read / write module 20 can be integrally formed.

[0111] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0112] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0113] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A hair dryer, comprising a main body and a nozzle detachably mounted on the air outlet end of the main body, characterized in that, The main body is equipped with an RFID module for identifying the air nozzle. The air nozzle includes a first housing, a second housing, and a label plate. The RFID module is inductively coupled with the label plate. One of the first housing and the second housing is detachably fixed to the main body. The second housing is fixedly sleeved with the first housing to form a closed mounting cavity for accommodating the label plate. The mounting cavity is provided with a first mounting part extending axially. The label plate is fixed to the outer periphery of the first mounting part.

2. A hair dryer according to claim 1, characterized in that, The nozzle also includes a surrounding wall around the outer periphery of the first mounting part. The first mounting part and the surrounding wall are both located in the first housing to form an annular limiting groove. The second housing is sleeved and fixed to the surrounding wall and presses the label plate axially in the limiting groove.

3. A hair dryer according to claim 2, characterized in that, The second housing includes a cover that fits with the opening of the limiting groove and a pressure rib protruding from the inside of the cover. The pressure ribs are arranged at intervals along the circumference. The pressure ribs include a protruding rib that limits the outer periphery of the label plate and a pressure holding rib that is bent relative to the protruding rib to press the label plate.

4. A hair dryer according to claim 2, characterized in that, The label plate includes a protrusion, and the enclosure is provided with an anti-rotation part that limits the rotation of the protrusion.

5. A hair dryer according to claim 4, characterized in that, The enclosure is provided with two recessed lugs from the inside out, which form a retrieval part symmetrically along the radial direction, and one of the lugs forms the anti-rotation part.

6. A hair dryer according to claim 1, characterized in that, The first mounting part includes an annular sleeve wall and a protrusion protruding from the outer side of the sleeve wall. The label plate is sleeved on the sleeve wall, and the label plate is provided with a notch that cooperates with the protrusion to prevent rotation.

7. A hair dryer according to claim 6, characterized in that, The protrusion is a stud provided on the first housing, and the second housing has a screw hole corresponding to the stud. The screw passes through the screw hole and is locked to the stud to fix the first housing and the second housing.

8. A hair dryer according to claim 1, characterized in that, The first mounting part includes a first limiting rib and a second limiting rib. The label plate is sleeved on the first limiting rib and the second limiting rib. The first limiting rib extends in an arc shape along the inner circumference of the label plate. The second limiting rib arches outward radially. The label plate is provided with a notch that cooperates with the second limiting rib to prevent rotation. Alternatively, the label plate has an identification surface for setting chips and capacitors, the first housing is detachably fixed to the main body, the second housing is sleeved on the outer periphery of the first housing, and the identification surface of the label plate faces the second housing; Alternatively, the nozzle may also include a third housing that is detachably fitted onto the outside of the second housing for heat insulation; Alternatively, the second housing includes a sleeve portion that fits into the first housing and a flat air outlet. The air outlet has multiple outwardly protruding and spaced-apart ribs on both sides. Each rib extends along the air outlet direction and forms a strip-shaped heat dissipation groove between two adjacent ribs.

9. A hair dryer according to claim 1, characterized in that, The main body includes a suction member, and the first housing also includes a second mounting part for mounting a magnet. The label plate is located on the outer periphery of the second mounting part, and the magnet is magnetically attracted to the suction member.

10. A hair dryer according to claim 9, characterized in that, The radial distance W1 between the magnet and the label plate satisfies 5mm≤W1≤30mm; Alternatively, the second mounting part is a mounting groove with an opening facing the main body, the magnet is embedded in the mounting groove, a cover plate is provided at the opening of the mounting groove, and screws pass through the cover plate, the magnet and the mounting groove to lock onto the second housing; Alternatively, an iron sheet may be fixed to the side of the magnet away from the attracting element.

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