Hair drier

Abstract

The utility model relates to the field of hair driers, in particular to a hair drier which comprises a body and a handle body, and the body is rotationally connected with the handle body. A linear air duct is arranged in the body, an air outlet is formed in the front end of the body, a first air inlet is formed in the side part of the rear end of the body, the air outlet and the first air inlet are communicated with the linear air duct, and an airflow driving mechanism is arranged in the linear air duct; a heat dissipation air channel is formed in the handle body, the heat dissipation air channel is communicated with the linear air channel, a control mechanism is arranged in the heat dissipation air channel and electrically connected with the airflow driving mechanism, and the handle body is provided with a second air inlet communicated with the heat dissipation air channel. The airflow driving mechanism in the body drives external air to enter the linear air duct from the first air inlet and then penetrate through the linear air duct to be exhausted from the air outlet, and the problems that airflow rotates and collides in the air duct, airflow turbulence is caused, the flow of the airflow is low, and using noise is large are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hair dryer, concretely relates to a hair dryer. BACKGROUND

[0002] A hair dryer is a widely used household appliance designed to dry hair quickly, while also having styling and hair care functions. It usually contains a motor and a heating element, the motor drives the fan to produce airflow, and the heating element heats the air, making it become hot air. When the hair dryer switch is pressed, the motor and heating element work simultaneously, blowing hot or cold air.

[0003] There are many types of hair dryers, the most common of which is the handheld hair dryer, which is small in size, light in weight, and very suitable for family and personal use. In addition, there are wall-mounted hair dryers, usually installed in commercial places such as barber shops, with larger power and suitable for long-term use. Some high-end hair dryers are also equipped with negative ion technology, which can release negative ions during blowing, helping to reduce static electricity, smooth hair, and make hair smoother. The constant temperature hair dryer keeps the outlet temperature constant through intelligent temperature control technology, avoiding overheating damage to the hair.

[0004] For example, the utility model patent with application number 202222486502.2 and the name of a hair dryer with compression and bunching air flow and circuit board heat dissipation efficiency, the inner arc-shaped air duct is arranged in the upper segment of the body of the hair dryer, and the air inlet is communicated with the air inlet channel at the bottom of the handle. The air inlet of the hair dryer is arranged at the bottom of the handle, and the airflow needs to enter from the bottom handle when the hair dryer is running. The airflow rotates to the air outlet in the hair dryer, resulting in smaller air volume of the hair dryer and larger use noise. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a hair dryer, aiming to improve the problem of small air volume of the bottom air inlet hair dryer and large use noise.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A hair dryer, comprising a body and a handle,

[0008] The body and the handle are rotationally connected;

[0009] A linear air duct is arranged in the body, an air outlet is formed at the front end of the body, a first air inlet is formed at the rear end side of the body, the air outlet and the first air inlet are communicated with the linear air duct, and an airflow driving mechanism is arranged in the linear air duct;

[0010] The handle body is provided with a heat dissipation air duct, the heat dissipation air duct is communicated with the straight air duct, the heat dissipation air duct is provided with a control mechanism and is electrically connected with the airflow driving mechanism, and the handle body is provided with a second air inlet communicated with the heat dissipation air duct.

[0011] Further, the heat dissipation air duct is provided with a heat dissipation fan blade, and the heat dissipation fan blade is located between the control mechanism and the second air inlet.

[0012] Further, the body is provided with a first installation inclined surface, the top end of the handle body is provided with a second installation inclined surface, the first installation inclined surface and the second installation inclined surface are mutually butted, and a rotating connecting piece is arranged.

[0013] Further, the rotating connecting piece comprises a guide ring block, a limiting ring block and a positioning sliding block,

[0014] The limiting ring block is arranged on the first installation inclined surface, an inner ring surface of the limiting ring block is provided with a first eave protruding outward, the guide ring block is arranged on the second installation inclined surface, an outer side end of the guide ring block is provided with a second eave protruding outward, the first eave and the guide ring block enclose to form an annular groove, and the second eave is embedded in the annular groove.

[0015] At least two positioning grooves recessed inward are arranged on the first installation inclined surface, the positioning grooves are arranged around the circumferential side of the limiting ring block, the positioning sliding block is movably arranged in the handle body, an end of the positioning sliding block protrudes from the second installation inclined surface and is embedded in one of the positioning grooves.

[0016] Further, an outer ring surface of the limiting ring block is provided with a first protruding block protruding outward, the annular groove is provided with a second protruding block protruding outward, and the first protruding block and the second protruding block abut each other.

[0017] Further, an inner ring surface of the guide ring block is provided with a positioning column, and an end of the positioning column protrudes from the guide ring block.

[0018] At least one limiting block is arranged in the body, the limiting block protrudes from the inner ring surface of the limiting ring block and is located on the movement path of the positioning column.

[0019] Further, the body is provided with a front air cylinder and a rear air cylinder, the rear air cylinder comprises a first shell and a second shell, one end of the first shell and the second shell is sleeved on the outer side of the rear end of the front air cylinder, and the first installation inclined surface and the limiting ring block are arranged on the other end of the first shell and the second shell.

[0020] The air flow driving mechanism is arranged in the rear air cylinder, the first air inlet is arranged on the side of the rear air cylinder, and the first air inlet is located at the rear end of the air flow driving mechanism; the heating mechanism is arranged in the front air cylinder, and the heating mechanism is electrically connected with the control mechanism.

[0021] Further, the air flow driving mechanism comprises a motor fixing base, a motor shell and a motor body,

[0022] The motor fixing base comprises a fixing part and a limiting part which are connected with each other, the fixing part is fixed to the inner side of the rear end of the front air cylinder, and the end of the motor body is fixed to the fixing part and electrically connected with the control mechanism;

[0023] The driving end of the motor body is connected with a fan blade, the motor shell is arranged around the circumferential side of the fan blade, the end of the motor shell abuts against the side of the fixing part, and at least one convex ring is arranged on the outer side of the motor shell;

[0024] The limiting part comprises a limiting body and a limiting part body, the limiting body is connected to the fixing part, limiting protrusions are arranged on the inner sides of the limiting body and the limiting part body, the limiting body and the limiting part body are arranged around the circumferential side of the motor shell and are fixed by end faces, and the limiting protrusions and the convex ring abut against each other.

[0025] Further, the handle body comprises a handle shell and a handle air cylinder, the handle air cylinder is fixed to the inside of the handle shell, and the second air inlet is arranged on the bottom of the handle air cylinder;

[0026] The second installation inclined surface is arranged on the top of the handle shell, the guide ring block is arranged on the top of the handle air cylinder and protrudes from the second installation inclined surface, the control mechanism is fixed in the handle air cylinder, the bottom of the handle air cylinder is provided with an installation gap, and the installation gap is detachably connected with a cover plate.

[0027] Further, opposite sides of the handle air cylinder are provided with guide plates, two guide plates form a guide channel, the positioning sliding block is embedded in the guide channel,

[0028] The handle shell is provided with a switching channel, the positioning sliding block is fixed with a knob, the knob extends outward through the switching channel, and the bottom of the positioning sliding block is provided with a reset member, and the free end of the reset member abuts against and contacts the top end of the cover plate.

[0029] Compared with the background art, the present application has the following advantages:

[0030] 1. The airflow drive mechanism inside the main body drives external air to enter the straight air duct through the first air inlet, and then exits through the air outlet after passing through the straight air duct. This effectively avoids the airflow from rotating and colliding in the air duct, which would cause airflow turbulence, resulting in low airflow and high noise.

[0031] 2. The airflow drive mechanism 4 drives external air into the straight air duct 11 through the first air inlet 13, generating negative pressure at the top of the heat dissipation air duct 23. This negative pressure drives the air outside the handle 2 into the heat dissipation air duct through the second air inlet 24, flowing into the straight air duct 11 and finally out through the air outlet 12, further increasing the airflow of the blower. Furthermore, as the external air flows through the heat dissipation air duct, it also dissipates heat from the control mechanism 22 within the duct, reducing the overall heat generation of the blower.

[0032] 3. The first and second mounting bevels of the handle and body are connected by a rotating connector, allowing for flexible adjustment of the position between the handle and body according to usage requirements, thus improving practicality. Furthermore, adjusting the tilt angles of the first and second mounting bevels allows for adjustment of the angular relationship between the handle and body under different usage conditions, providing excellent flexibility. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the columnar structure of the hair dryer described in this utility model in its usage state;

[0034] Figure 2 This is a schematic diagram of the columnar cross-sectional structure of the hair dryer described in this utility model;

[0035] Figure 3 This is an enlarged schematic diagram of part A of the hair dryer described in this utility model;

[0036] Figure 4 This is a schematic diagram of the angled use state of the hair dryer described in this utility model;

[0037] Figure 5 This is a schematic diagram of the angled cross-sectional structure of the hair dryer described in this utility model;

[0038] Figure 6 This is an enlarged schematic diagram of part B of the hair dryer described in this utility model;

[0039] Figure 7 This is a schematic diagram of the internal exploded structure of the hair dryer body described in this utility model;

[0040] Figure 8 This is a schematic diagram of the internal structure of the hair dryer body described in this utility model;

[0041] Figure 9 This is a front view of the exploded structure of the handle of the hair dryer described in this utility model;

[0042] Figure 10 It is an exploded structure reverse view of the handle of the hair dryer.

[0043] Mark explanation:

[0044] 1, body; 11, straight air duct; 12, air outlet; 13, first air inlet; 131, main air inlet cover; 132, main filter screen; 14, front air cylinder; 141, heating mechanism; 15, rear air cylinder; 151, first installation slope; 1511, positioning groove; 152, first shell; 153, second shell; 154, boss; 155, tab; 16, limiting block;

[0045] 2, handle body; 21, handle shell; 211, second installation slope; 2111, accommodation opening; 2112, accommodation notch; 212, switching channel; 22, control mechanism; 23, heat dissipation air duct; 24, second air inlet; 241, secondary air inlet cover; 242, secondary filter screen; 25, heat dissipation fan blade; 26, handle air cylinder; 261, installation notch; 262, cover plate; 263, guide plate; 264, guide channel;

[0046] 3, rotating connecting piece; 31, guide ring block; 311, second eaves; 312, annular groove; 313, second protruding block; 314, positioning column; 32, limiting ring block; 321, first eaves; 322, first protruding block; 33, positioning sliding block; 331, push block; 332, reset member;

[0047] 4, airflow driving mechanism; 41, motor fixing seat; 411, fixing part; 4111, through hole; 412, limiting part; 4121, limiting body; 4122, limiting part body; 4123, limiting protrusion; 42, motor shell; 421, convex ring; 43, motor body; 431, fan blade. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical scheme and advantages of the utility model more clearly and clearly, the following will be further described in detail by combining with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0049] In addition, it should be noted that: the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements of the utility model must have a specific orientation, therefore it cannot be understood as a limitation on the utility model.

[0050] When an element is referred to as being "fixed", "attached", or "connected" to another element, it can be directly on the other element or indirectly on the other element, with one or more intervening elements. When an element is referred to as being "connected" or "linked" to another element, it can be directly connected to the other element or indirectly connected to the other element by way of one or more intervening elements.

[0051] Unless otherwise defined, the terms "mount", "connected", "connecting" are to be construed as broadly as possible, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0052] Embodiment

[0053] Please refer to Figures 1-10 The embodiment provides a hair dryer, which comprises a body 1 and a handle body 2, and the body 1 and the handle body 2 are rotationally connected. The body 1 is internally provided with a straight air duct 11, and the front end of the body 1 is provided with an air outlet 12; the rear end side of the body 1 is provided with a first air inlet 13, and the air outlet 12 and the first air inlet 13 are in communication with the straight air duct 11. The straight air duct 11 is internally provided with an airflow driving mechanism 4. The handle body 2 is internally provided with a heat dissipation air duct 23, and the heat dissipation air duct 23 is in communication with the straight air duct 11. The heat dissipation air duct 23 is provided with a control mechanism 22 and is electrically connected with the airflow driving mechanism 4. The handle body 2 is provided with a second air inlet 24 in communication with the heat dissipation air duct 23.

[0054] The airflow driving mechanism 4 drives external air to enter the straight air duct 11 from the first air inlet 13, and then the external air is discharged from the air outlet 12 through the straight air duct 11, which effectively avoids the rotation and collision of the airflow in the air duct, so that the airflow is disturbed, the flow of the airflow is low, and the problem of large noise in use is caused.

[0055] Meanwhile, the airflow driving mechanism 4 drives external air to enter the straight air duct 11 from the first air inlet 13, generates negative pressure at the top end of the heat dissipation air duct 23, drives the external air of the handle body 2 to enter the heat dissipation air duct from the second air inlet 24, and then flows to the straight air duct 11, and finally flows out through the air outlet 12, thereby further improving the air volume of the hair dryer. Moreover, when the external air flows through the heat dissipation air duct 23, the control mechanism 22 in the heat dissipation air duct 23 can be cooled, and the overall heating amount of the hair dryer is reduced.

[0056] And the first installation slope 151 and the second installation slope 211 of the handle body 2 and the body 1 are connected through the rotating connecting piece 3, the position between the handle body 2 and the body 1 can be flexibly adjusted according to the use requirement, and the better practicability is obtained.

[0057] Please refer to Figure 2 、 Figure 3 、 Figure 5 And Figure 6 , in the embodiment, the first installation slope 151 is arranged on the body 1, the top end of the handle body 2 is provided with the second installation slope 211, the first installation slope 151 and the second installation slope 211 are mutually butted, and the rotating connecting piece 3 is arranged. Specifically, the rotating connecting piece 3 includes a guide ring block 31, a limiting ring block 32 and a positioning sliding block 33. The limiting ring block 32 is arranged on the first installation slope 151, and the inner ring surface of the limiting ring block 32 is provided with the outwardly protruding first eave 321. The guide ring block 31 is arranged on the second installation slope 211, and the outer side end of the guide ring block 31 is provided with the outwardly protruding second eave 311, the second eave 311 and the guide ring block 31 surround to form the annular groove 312, the first eave 321 is embedded in the annular groove 312, so that the limiting ring block 32 rotates around the guide ring block 31. The annular groove 312 guides and limits the first eave 321, ensures the accuracy and continuity of the position of the limiting ring block 32 in the rotating process, avoids the jamming condition of the air-eating machine in the state adjustment, and affects the use.

[0058] Please refer to Figure 8As shown, the first installation slope 151 is provided with at least two inwardly recessed positioning grooves 1511, which are arranged around the circumferential side of the limiting ring block 32. The positioning sliding block 33 is movably arranged in the handle body 2, and the end of the positioning sliding block 33 protrudes from the second installation slope 211 and is embedded in the positioning groove 1511. In the fixed state of the handle body 2 and the body 1, the end of the positioning sliding block 33 protrudes from the second installation slope 211 and is embedded in one of the positioning grooves 1511. The positioning sliding block 33 provides a limiting force for the body 1, keeping the body 1 stable in a specific state. In the adjusting state of the handle body 2 and the body 1, the positioning sliding block 33 is driven to slide in the space, and the end of the positioning sliding block 33 is separated from the positioning groove 1511, thereby unlocking the body 1, allowing the guiding ring block 31 of the body 1 to rotate around the limiting ring block 32, thereby achieving the purpose of state adjustment. In the present embodiment, the number of positioning grooves 1511 is two, and the two positioning grooves 1511 are located at the diametrically opposite ends of the circular arc movement direction, which is concentric with the guiding ring block 31. That is, in the adjusting state, the body 1 can be rotated by 180°, so that the hair dryer can be adjusted from a columnar use state to an angle use state to adapt to different use requirements. Similarly, the positioning grooves 1511 can not be located at the diametrically opposite ends, or the number of positioning grooves 1511 can be three or more, so that there can be more use states between the body 1 and the handle body 2.

[0059] Please refer to Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, in the present embodiment, the inner ring surface of the limiting ring block 32 is provided with an outwardly protruding first protrusion 322, and the annular groove 312 is provided with an outwardly protruding second protrusion 313. The first protrusion 322 and the second protrusion 313 abut against each other. The first protrusion 322 and the second protrusion 313 form a step portion that abuts against each other on the inner ring surface of the limiting ring block 32 and in the annular groove 312, thereby increasing the contact area between the limiting ring block 32 and the guiding ring block 31, improving the sealing property therebetween, and preventing external gas from flowing out from the gap between the limiting ring block 32 and the guiding ring block 31 after entering the straight air duct 11 through the first air inlet 13, thereby affecting the air volume and air speed of the hair dryer.

[0060] Please refer to Figure 3 and Figure 6As shown, further, the inner ring surface of the guide ring block 31 is provided with a positioning column 314, the end of the positioning column 314 protrudes from the guide ring block 31. At least one limiting block 16 is arranged in the body 1, the limiting block 16 protrudes from the inner ring surface of the limiting ring block 32 and is located on the movement path of the positioning column 314. In the embodiment, the number of limiting blocks 16 is two, and the two limiting blocks 16 correspond to the position end of the positioning column 314 in the columnar use state of the hair dryer and the position end of the positioning column 314 in the corner use state, respectively, to ensure that the positioning column 314 can rotate within 180° atmosphere, and improve the accuracy of the state switching of the hair dryer.

[0061] Please refer to Figure 2 、 Figure 5 、 Figure 7 and Figure 8 As shown, in the embodiment, the body 1 is provided with a front air cylinder 14 and a rear air cylinder 15, and the rear air cylinder 15 includes a first shell 152 and a second shell 153. One end of the first shell 152 and the second shell 153 is sleeved outside the rear end of the front air cylinder 14, and the first mounting slope 151 and the limiting ring block 32 are arranged on the other end of the first shell 152 and the second shell 153. The limiting ring block 32 is arranged on the first shell 152 and the second shell 153 respectively to form a combined part, which facilitates the locking between the limiting ring block 32 and the guide ring block 31 during assembly.

[0062] The airflow driving mechanism 4 is arranged in the rear air cylinder 15, the first air inlet 13 is arranged on the side surface of the rear air cylinder 15, and the handle body 2 is connected to the end of the body 1. The first air inlet 13 is arranged on the side surface of the body 1, which fully utilizes the space of the body 1 and improves the space utilization rate under the premise of ensuring that the first air inlet 13 has good air intake. Further, the first air inlet 13 is located at the rear end of the airflow driving mechanism 4, which ensures that the driving range of the airflow driving mechanism 4 covers the entire range of the first air inlet 13, thereby improving the air intake efficiency. Moreover, the first air inlet 13 penetrates the rear air cylinder 15 and the body 1, and the first air inlet 13 is fixed with a main air inlet cover 131 and a main filter screen 132. The main air inlet cover 131 covers the first air inlet 13 to prevent external debris from entering the interior of the body 1 through the first air inlet 13 and affecting the operation of the internal airflow driving mechanism 4. The main filter screen 132 further filters dust and debris in the air to prevent them from entering the interior of the body 1. The front air cylinder 14 is provided with a heating mechanism 141, and the heating mechanism 141 is electrically connected with the control mechanism 22. The heating mechanism 141 heats the gas. In the embodiment, the heating mechanism 141 is a resistance wire, and other heating mechanisms 141 can also be used.

[0063] Please refer to Figure 7 and Figure 8As shown, in the embodiment, the airflow driving mechanism 4 comprises a motor fixing base 41, a motor casing 42 and a motor body 43. The motor fixing base 41 comprises a fixing part 411 and a limiting part 412 connected with each other, and the fixing part 411 is fixed to the inner side of the rear end of the front air duct 14. The end of the motor body 43 is fixed to the fixing part 411 and electrically connected with the control mechanism 22. The fixing part 411 limits the motor body 43, and a through hole 4111 is formed in the fixing part 411 for the gas to pass through, thereby ensuring the stability of the motor body 43 during operation.

[0064] The driving end of the motor body 43 is connected with a fan blade 431, and the motor casing 42 is arranged around the circumference of the fan blade 431. In the embodiment, the driving end of the motor body 43 extends into the rear air duct 15, and the space of the rear air duct 15 is fully utilized. The fan blade 431 is located in the gap between the driving part of the motor body 43 and the motor casing 42. In the embodiment, the fan blade 431 is a streamline fan blade 431, which improves the driving efficiency of the gas while ensuring the air flow. Moreover, the motor casing 42 surrounds the fan blade 431 to provide a straight air flow channel for the air, thereby avoiding the air turbulence and affecting the air outlet speed and air outlet volume.

[0065] The end of the motor casing 42 abuts against the side surface of the fixing part 411, which increases the contact area between the motor casing 42 and the fixing part 411, thereby ensuring the good stability of the motor casing 42. Further, at least one convex ring 421 is arranged on the outer side surface of the motor casing 42. In the embodiment, the number of the convex rings 421 is three, and the three convex rings 421 are arranged at intervals in the length direction of the motor casing 42.

[0066] Specifically, the limiting part 412 comprises a limiting body 4121 and a limiting part 4122, and the limiting body 4121 is connected to the fixing part 411. Limiting protrusions 4123 are arranged on the inner side surfaces of the limiting body 4121 and the limiting part 4122, and the limiting body 4121 and the limiting part 4122 surround the circumference of the motor casing 42 and are abutted and fixed at the end surfaces. The limiting protrusions 4123 and the convex rings 421 abut against each other. In the embodiment, the end surfaces of the limiting body 4121 and the limiting part 4122 abut against each other and are fixed and connected with each other by bolts. The limiting body 4121 and the limiting part 4122 form a detachable limiting structure, and the installation and disassembly of the motor casing 42 are realized by connecting or separating the limiting part 4122 and the limiting body 4121. In the embodiment, the number of the limiting protrusions 4123 is two, and the two limiting protrusions 4123 are located between the two convex rings 421 close to the fixing part 411, that is, the outer sides of the two limiting protrusions 4123 abut against and contact the two convex rings 421, thereby limiting the motor casing 42 in the length direction of the motor casing 42.

[0067] In the embodiment, the rear air duct 15 is provided with a boss 154 and a protruding plate 155, the protruding plate 155 is in contact with the other protruding ring 421, the boss 154 is in contact with one end of the fixed part 411 of the motor housing 42, and the fixed part 411 is in contact with the motor body 43 on both sides of the motor housing 42, which further ensures that the motor housing 42 has good stability during use.

[0068] Please refer to Figure 5 , Figure 9 and Figure 10 , in the embodiment, the heat dissipation air duct 23 is provided with heat dissipation fan blades 25, which are located between the control mechanism 22 and the second air inlet 24. The heat dissipation fan blades 25 are driven by the air entering the second air inlet 24 to rotate, which increases the air flow rate in the heat dissipation air duct 23, thereby improving the overall air outlet speed, and further applying suction to the air at the bottom end of the handle body 2 to increase the air inlet amount of the second air inlet 24, thereby improving the heat dissipation effect of the control mechanism 22.

[0069] Specifically, the handle body 2 includes a handle shell 21 and a handle air duct 26, and the handle air duct 26 is fixed in the handle shell 21. The second air inlet 24 is provided at the bottom of the handle air duct 26, and the second air inlet 24 communicates with the outside through the handle shell 21. In the embodiment, the second air inlet 24 is provided with a secondary air inlet cover 241, and the inner side of the secondary air inlet cover 241 is provided with a secondary filter screen 242.

[0070] The second installation slope 211 is provided at the top of the handle shell 21, and the guide ring block 31 is provided at the top of the handle air duct 26 and protrudes from the second installation slope 211. In the embodiment, the second installation slope 211 is provided with a gap opening 2111, and the guide ring block 31 extends outward through the gap opening 2111. Further, the gap opening 2111 is provided with a gap notch 2112, and the gap notch 2112 corresponds to the end position of the positioning sliding block 33, and the end of the positioning sliding block 33 extends outward through the gap notch 2112. The control mechanism 22 and the heat dissipation fan blades 25 are fixed in the handle air duct 26, and the bottom of the handle air duct 26 is provided with an installation gap 261, and the installation gap 261 is detachably connected with a cover plate 262 through bolts. The detachable cover plate 262 is convenient for installing and dismounting the control mechanism 22. In the embodiment, the control mechanism 22 includes a PCB board and a control circuit on the PCB board.

[0071] In the embodiment, the outer side of the handle air cylinder 26 is provided with a guide plate 263 opposite to each other, and the two guide plates 263 form a guide channel 264, and the positioning slider 33 is embedded in the guide channel 264. The guide plate 263 limits the positioning slider 33 on the left and right sides, and the outer side of the handle air cylinder 26 and the inner side of the handle shell 21 limit the positioning slider 33 on the front and back sides, so as to ensure that the positioning slider 33 stably moves in the guide channel 264. Further, the handle shell 21 is provided with a switching channel 212, and the positioning slider 33 is fixed with a knob 331, and the knob 331 extends outward through the switching channel 212. The knob 331 extends outward, adjusts the position of the positioning slider 33 through the knob 331, so as to control the end of the positioning slider 33 to extend into the positioning groove 1511 or separate from the positioning groove 1511, and realize state switching and fixing. The bottom of the positioning slider 33 is provided with a reset member 332, and the free end of the reset member 332 is in abutting contact with the top end of the cover plate 262. In the embodiment, the reset member 332 is a spring, and the knob 331 is pressed down to separate the end of the positioning slider 33 from the positioning groove 1511, and the handle body 2 and the body 1 are adjusted in state; at this time, the reset member 332 is in a compressed state. After the driving force of the knob 331 is removed, the reset member 332 rebounds and drives the end of the positioning slider 33 to enter the positioning groove 1511, and the handle body 2 and the body 1 are fixed in state. At the same time, when the state is fixed, the reset member 332 provides a pushing force for the positioning slider 33 in the direction of the positioning groove 1511, so as to ensure that the end of the positioning slider 33 is tightly fitted with the groove bottom of the positioning groove 1511, thereby improving the stability of the handle body 2 and the body 1 in state.

[0072] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be limited by the protection scope of the claims.

Claims

1. A hair dryer characterized by, The body and the handle are rotationally connected. A linear air duct is arranged in the body, an air outlet is arranged at the front end of the body, a first air inlet is arranged at the rear end side of the body, the air outlet and the first air inlet are communicated with the linear air duct, and an airflow driving mechanism is arranged in the linear air duct. A heat dissipation air duct is arranged in the handle, the heat dissipation air duct is communicated with the linear air duct, a control mechanism is arranged in the heat dissipation air duct, and the control mechanism is electrically connected with the airflow driving mechanism, and the handle is provided with a second air inlet communicated with the heat dissipation air duct. A heat dissipation fan blade is arranged in the heat dissipation air duct, and the heat dissipation fan blade is located between the control mechanism and the second air inlet.

2. The hair dryer of claim 1, wherein: A first installation inclined surface is arranged on the body, a second installation inclined surface is arranged at the top end of the handle, the first installation inclined surface and the second installation inclined surface are abutted with each other, and a rotation connecting piece is arranged.

3. The hair dryer of claim 1, wherein: The rotation connecting piece comprises a guide ring block, a limiting ring block and a positioning sliding block, 4. The hair dryer of claim 3, wherein: The limiting ring block is arranged on the first installation inclined surface, an inner ring surface of the limiting ring block is provided with a first eave protruding outward, the guide ring block is arranged on the second installation inclined surface, an outer side end of the guide ring block is provided with a second eave protruding outward, the first eave and the guide ring block form an annular groove, and the second eave is embedded in the annular groove. At least two positioning grooves recessed inward are arranged on the first installation inclined surface, the positioning grooves are arranged around the limiting ring block, the positioning sliding block is movably arranged in the handle, an end of the positioning sliding block protrudes from the second installation inclined surface, and the end of the positioning sliding block is embedded in one of the positioning grooves. An outer ring surface of the limiting ring block is provided with a first protruding block, an inner ring surface of the annular groove is provided with a second protruding block, and the first protruding block and the second protruding block abut with each other.

5. The hair dryer of claim 4, wherein: An inner ring surface of the guide ring block is provided with a positioning column, and an end of the positioning column protrudes from the guide ring block.

6. The hair dryer of claim 4, wherein: At least one limiting block is arranged in the body, the limiting block protrudes from the inner ring surface of the limiting ring block, and the limiting block is located on a movement path of the positioning column. A front air cylinder and a rear air cylinder are arranged in the body, the rear air cylinder comprises a first shell and a second shell, one end of the first shell and the second shell is sleeved on the outer side of the rear end of the front air cylinder, and the first installation inclined surface and the limiting ring block are arranged on the other end of the first shell and the second shell.

7. The hair dryer of claim 4, wherein: The airflow driving mechanism is arranged in the rear air cylinder, the first air inlet is arranged on the side surface of the rear air cylinder, and the first air inlet is located at the rear end of the airflow driving mechanism; a heating mechanism is arranged in the front air cylinder, and the heating mechanism is electrically connected with the control mechanism. The airflow driving mechanism comprises a motor fixing seat, a motor shell and a motor body, 8. The hair dryer of claim 7, wherein: The motor fixing seat comprises a fixing part and a limiting part connected with each other, the fixing part is fixed on the inner side of the rear end of the front air cylinder, an end of the motor body is fixed on the fixing part, and the motor body is electrically connected with the control mechanism; A fan blade is connected with a driving end of the motor body, the motor shell is arranged around the peripheral side of the fan blade, an end of the motor shell abuts against the side surface of the fixing part, and at least one convex ring is arranged on the outer side surface of the motor shell. ​ The limiting part comprises a limiting body and a limiting part body, the limiting body is connected on the fixed part; the inner side of the limiting body and the limiting part body is provided with a limiting protrusion, the limiting body and the limiting part body are surrounded on the side of the motor shell, and the end surface is abutted and fixed, the limiting protrusion and the convex ring are abutted each other.

9. The hair dryer of claim 4, wherein: The handle body comprises a handle shell and a handle air duct, the handle air duct is fixed in the handle shell, and the second air inlet is arranged at the bottom of the handle air duct; The second installation slope is arranged at the top of the handle shell, the guide ring block is arranged at the top of the handle air duct and protrudes from the second installation slope; the control mechanism is fixed in the handle air duct, the bottom of the handle air duct is provided with an installation gap, and the installation gap is detachably connected with a cover plate.

10. The hair dryer of claim 9, wherein: The outer side of the handle air duct is provided with a guide plate, two guide plates form a guide channel, the positioning sliding block is embedded in the guide channel, The handle shell is provided with a switching channel, the positioning sliding block is fixed with a pulling block, the pulling block extends outward through the switching channel; the bottom of the positioning sliding block is provided with a reset member, and the free end of the reset member is in abutting contact with the top end of the cover plate.

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