PTC (Positive Temperature Coefficient) ceramic heating blower convenient to assemble

Abstract

The PTC ceramic heating blower convenient to assemble comprises a shell, a wind driving device and a handle, the shell is provided with a containing channel, a first hole opening, a second hole opening and a third hole opening, the first hole opening, the second hole opening and the third hole opening are communicated with the containing channel, the wind driving device stretches into the containing channel through the second hole opening, and a wiring hole is formed in the side portion of the wind driving device. A first clamping structure is arranged at the end, close to the first hole opening, of the peripheral wall of the wind driving device, a second clamping structure is arranged on the inner wall of the containing channel of the shell, the wind driving device enables the first clamping structure and the second clamping structure to be connected in a clamping mode through movement and rotation, and meanwhile the wiring hole is communicated with the third hole opening. Through precise installation and fixation of the wind driving device, an efficient and stable assembling mode is achieved, the assembling process is greatly simplified, and the production and maintenance cost is reduced. The installation precision, the mechanical stability and the heat dissipation performance of the ceramic heating piece are improved, the damping effect and safety of the fixing ring of the ceramic heating piece in the high-temperature operation state are guaranteed, and therefore the overall assembly efficiency is improved, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hair dryer, especially to a PTC ceramic heating hair dryer convenient to assemble. BACKGROUND

[0002] Hair dryer is a common household appliance, which helps hair dry quickly through high-speed airflow and heat energy, and is also used for hair styling and care. Its main structure includes motor, fan and heating element, the motor drives the fan to blow air, the air is heated by electric heating wire or ceramic heating body to form hot air, some models also have cold wind mode and negative ion function to reduce static electricity and improve the hair roughness. Hair dryer can greatly shorten the time of natural drying hair, and has become an indispensable tool in daily life, providing great convenience for hair care and styling.

[0003] However, the application of semiconductor heating elements (such as PTC ceramic heating elements) in hair dryers faces the problem of difficult assembly. Since semiconductor heating elements need to be fixed accurately and must ensure heat dissipation effect and mechanical stability during operation, traditional installation methods often fail to meet these requirements. The conventional fixing structure is prone to cause the position deviation or instability of the heating element during assembly, resulting in vibration and noise during equipment operation, and even affecting safety due to poor heat dissipation. In addition, how to ensure the shock absorption and heat insulation of semiconductor heating elements under high temperature working conditions is also a difficult problem to be solved in existing designs. The above problems not only reduce the assembly efficiency of hair dryer, but also increase the production and maintenance cost.

[0004] In order to solve the problems of complex assembly, unstable fixation, vibration and noise of semiconductor heating elements in hair dryer, a PTC ceramic heating hair dryer convenient to assemble is proposed, which aims to improve the installation precision, mechanical stability and heat dissipation performance of the heating element, and ensure the shock absorption effect and safety of the product under high temperature operation state, so as to improve the overall assembly efficiency and service life. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the above problems, the utility model provides a PTC ceramic heating hair dryer convenient to assemble, which solves the problems of complex assembly, unstable fixation, vibration and noise of semiconductor heating elements in hair dryer.

[0006] The utility model realizes the following technical schemes:

[0007] The utility model provides a kind of PTC ceramic heating hair dryer convenient to assemble, including shell, air driving device and handle, the shell is equipped with accommodating passage, with the first orifice, second orifice and third orifice being communicated with the accommodating passage, characterized by, the air driving device is inserted into the accommodating passage through the second orifice, the air driving device side is equipped with wiring hole, the air driving device outer peripheral wall is equipped with the first clamping structure in the end close to the first orifice, the shell is equipped with the second clamping structure in the inner wall of accommodating passage, the air driving device is clamped by moving and rotating the first clamping structure with the second clamping structure, and the wiring hole is communicated with the third orifice simultaneously, so that the electric wire of the air driving device is electrically connected with the handle through the wiring hole and the third orifice;

[0008] The air driving device includes an inner shell, a fixing ring, a fan, and a ceramic heating element. The fan and the fixing ring are clamped in the inner shell. The ceramic heating element is clamped in the fixing ring. The fan blows towards the ceramic heating element and the second orifice.

[0009] Further, the fixing ring is provided with a fixing hole, and the inner wall of the fixing hole is provided with a fastening groove. The fastening groove is communicated with the fixing hole. The ceramic heating element is in the shape of a cylinder. The ceramic heating element is inserted into the fixing hole, and the outer peripheral side wall is clamped in the fastening groove.

[0010] The inner shell includes a first inner shell and a second inner shell. The first inner shell is provided with an annular flange. The second inner shell is provided with an annular arc-shaped groove. The second inner shell is provided with an annular abutting portion on the inner side of the annular arc-shaped groove. The end of the fixing ring abuts against the annular abutting portion. The annular flange is clamped in the annular arc-shaped groove. The end of the fixing ring, which is away from the annular abutting portion, abuts against the inner wall of the first inner shell. The outer peripheral side wall of the fixing ring abuts against the annular flange.

[0011] Further, the first clamping structure includes a plurality of first clamping portions and first avoiding grooves. The plurality of first clamping portions and the plurality of first avoiding grooves are staggered.

[0012] The second clamping structure includes an annular fixing groove, a plurality of second clamping portions, and second avoiding grooves. The annular fixing groove is communicated with each second avoiding groove. The plurality of second clamping portions and the plurality of second avoiding grooves are staggered.

[0013] The plurality of first clamping portions are matched in size, shape, and position with the plurality of second avoiding grooves. The plurality of second clamping portions are matched in size, shape, and position with the plurality of first avoiding grooves.

[0014] The wind driving device moves towards the direction of the first orifice to pass each first clamping part through each second avoiding slot while avoiding each second clamping part through the first avoiding slot, so that each first clamping part is arranged in the annular fixing slot.

[0015] When each first clamping part is arranged in the annular fixing slot, the wind driving device rotates to abut the first clamping part and the second clamping part.

[0016] Further, the outer shell is provided with a convex part on the inner wall of the accommodating channel, the first clamping part is provided with an arc-shaped recess in the direction of the inner wall of the accommodating channel of the outer shell, the convex part is matched with the arc-shaped recess, and when each first clamping part is arranged in the annular fixing slot, the wind driving device rotates to arrange the convex part in the arc-shaped recess.

[0017] Further, when the convex part is arranged in the arc-shaped recess, the wire hole is in communication with the third orifice, and the central axis of the wire hole is the same as that of the third orifice.

[0018] Further, one end of the wind driving device close to the second orifice is provided with a fixing cover, and when the wind driving device extends into the accommodating channel through the second orifice, the fixing cover is clamped with the outer peripheral wall of the outer shell.

[0019] Further, the inner peripheral wall of the fixing cover is provided with a clamping ring, and the outer peripheral wall of the outer shell is provided with a clamping groove, the clamping ring is arranged in the clamping groove to clamp the fixing cover with the outer peripheral wall of the outer shell.

[0020] Further, the clamping ring is made of a deformable material, the outer peripheral wall of the outer shell is provided with an annular convex arc, and the annular convex arc is arranged on one side of the clamping groove; during the process that the clamping ring is arranged in the clamping groove, the clamping ring is elastically deformed to pass through the annular convex arc and is arranged in the clamping groove.

[0021] Further, the PTC ceramic heating hair dryer convenient to assemble further comprises a nozzle, the nozzle is arranged on the fixing cover, the fixing cover is provided with a first air hole in communication with the accommodating channel, the nozzle is provided with a second air hole, and the wind driving device sequentially passes through the first air hole and the second air hole to blow air.

[0022] Further, the PTC ceramic heating hair dryer convenient to assemble further comprises a rear cover, the rear cover covers the first orifice, the rear cover is provided with a third air hole in communication with the accommodating channel, and external air flows into the wind driving device through the third air hole.

[0023] The PTC ceramic heating hair dryer convenient to assemble has the advantages that:

[0024] The utility model provides a PTC ceramic heating hair dryer convenient to assemble, the middle axis of first orifice is same with the middle axis of second orifice, the middle axis of first orifice is perpendicular with the middle axis of third orifice, and the air blowing device stretches into the containing channel through second orifice, and the air blowing device side is equipped with the wire hole, and one end of the air blowing device outer peripheral wall is equipped with first clamping joint structure close to first orifice, and the shell is equipped with second clamping joint structure in the inner wall of containing channel, and the air blowing device is clamped with first clamping joint structure and second clamping joint structure through moving and rotating, and wire hole and third orifice are connected simultaneously, so that the wire of air blowing device is electrically connected with handle through wire hole and third orifice, and the air blowing device includes inner shell, fixed ring, fan and ceramic heating element, and the fan and fixed ring are clamped in the inner shell, and the ceramic heating element is clamped in the fixed ring, and the fan blows towards the ceramic heating element and second orifice, and the air blowing device includes inner shell, fixed ring, fan and ceramic heating element, and the fixed ring is made of damping material, and the fan and fixed ring are clamped in the inner shell, and the ceramic heating element is clamped in the fixed ring, and the fan blows towards the ceramic heating element and second orifice, and ensure that the airflow can be smoothly discharged after passing through the ceramic heating element. Through the accurate installation and fixation of the air blowing device, the efficient and stable assembly mode is realized, the assembly process is greatly simplified, and the production and maintenance costs are reduced. In addition, this design fixes the ceramic heating element and fan firmly in the inner shell through the accurate clamping mode, improves the installation precision, mechanical stability and heat dissipation performance of the ceramic heating element, and ensures the damping effect and safety of the fixed ring of the product ceramic heating element in the high-temperature operating state, thereby improving the overall assembly efficiency and service life. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the overall perspective drawing of the PTC ceramic heating hair dryer convenient to assemble of the utility model;

[0026] Figure 2 It is the front view of the PTC ceramic heating hair dryer convenient to assemble of the utility model;

[0027] Figure 3 It is Figure 2 the overall sectional view of P1-P1 part;

[0028] Figure 4 It is the exploded perspective drawing of the PTC ceramic heating hair dryer convenient to assemble of the utility model;

[0029] Figure 5 It is Figure 2 the exploded sectional view (as Figure 4 the exploded view) of P1-P1 part;

[0030] Figure 6 It is the perspective drawing of the shell of the utility model;

[0031] Figure 7 is a sectional view of the shell;

[0032] Figure 8 is a perspective view of the wind driving device of the utility model;

[0033] Figure 9 is a sectional view of the wind driving device;

[0034] Figure 10 is a perspective view of the shell of the utility model;

[0035] Figure 11 is a top view of the shell of the utility model;

[0036] Figure 12 is a sectional view of the P2-P2 part of Figure 11

[0037] Figure 13 is an exploded sectional view of the wind driving device.

[0038] The reference signs are as follows:

[0039] 10, PTC ceramic heating hair dryer convenient to assemble; 100, shell; 110, containing channel; 120, first orifice; 130, second orifice; 140, third orifice; 151, annular fixed groove; 152, second clamping part; 153, second avoiding groove; 154, convex part; 160, clamping groove; 170, annular convex arc; 200, wind driving device; 210, wire hole; 221, first clamping part; 2211, arc-shaped recess; 222, first avoiding groove; 230, fixed cover; 231, clamping ring; 232, first vent hole; 241, first inner shell; 2411, annular flange; 242, second inner shell; 2421, annular recess; 2422, annular abutment part; 250, fixed ring; 251, fixed hole; 252, fastening groove; 260, fan; 270, ceramic heating element; 300, handle; 400, air nozzle; 410, second vent hole; 500, rear cover; 510, third vent hole. DETAILED DESCRIPTION

[0040] In order to more clearly and completely illustrate the technical scheme of the utility model, the utility model will be further described below in combination with the drawings.

[0041] Please refer to Figures 1 to 13 ​The utility model provides a PTC ceramic heating hair dryer 10 convenient to assemble, including shell 100, wind driving device 200 and handle 300, shell 100 is seted up with accommodation channel 110, with the first orifice 120, second orifice 130 and third orifice 140 of accommodation channel 110 intercommunication, the central axis of first orifice 120 is same with the central axis of second orifice 130, the central axis of first orifice 120 is perpendicular with the central axis of third orifice 140, wind driving device 200 is stretched into accommodation channel 110 through second orifice 130, and wind driving device 200 side is equipped with the wire hole 210, and one end of wind driving device 200 peripheral wall is close to first orifice 120 and is equipped with first clamping joint structure (not marked in the figure), and shell 100 is equipped with second clamping joint structure (not marked in the figure) in the inner wall of accommodation channel 110, and wind driving device 200 is clamped with first clamping joint structure and second clamping joint structure through moving and rotating, and wire hole 210 is connected with third orifice 140 simultaneously, so that the wire of wind driving device 200 is connected with handle 300 through wire hole 210 and third orifice 140 with electricity,

[0042] Wind driving device 200 includes inner shell (not marked in the figure), fixed ring 250, fan 260, ceramic heating part 270, fan 260 and fixed ring 250 are clamped in the inner shell, ceramic heating part 270 is clamped in fixed ring 250, and fan 260 blows towards ceramic heating part 270 and blows towards second orifice 130.

[0043] Specifically, the shell 100 is provided with a containing channel 110, a first aperture 120, a second aperture 130 and a third aperture 140 connected with the containing channel 110. The first aperture 120 and the second aperture 130 have the same central axis, which ensures that the air blowing device 200 can be smoothly moved and clamped along the same axis direction, and guarantees the accuracy and convenience of the assembly process. Meanwhile, the central axis of the first aperture 120 is perpendicular to that of the third aperture 140, which ensures the rationality of the wire layout, so that the wire of the air blowing device 200 can smoothly pass through the third aperture 140 and be connected with the internal circuit of the handle 300. The air blowing device 200 extends into the containing channel 110 from the second aperture 130 and is provided with a wire hole 210 at the side thereof. The outer peripheral wall of the air blowing device 200 is provided with a first clamping structure at one end close to the first aperture 120, and the inner wall of the containing channel 110 of the shell 100 is provided with a second clamping structure. Through the movement and rotation operation of the air blowing device 200, the first clamping structure and the second clamping structure are clamped, realizing the stable connection and limiting fixation between the components, and at the same time, when the air blowing device 200 is connected with the handle 300, the wire can smoothly pass through the wire hole 210 and be connected with the third aperture 140, realizing the rational layout of the internal wire and avoiding the wire from being squeezed or wound. The use of the clamping structure enables the assembly personnel to complete the assembly of the components through simple movement and rotation actions, without the need for complex tools or multiple debugging, greatly improving the assembly efficiency. This structural design avoids the misalignment and looseness problems that easily occur in the traditional screw fixing mode, and at the same time improves the assembly speed.

[0044] The fan 260 and the fixing ring 250 are clamped in the inner shell, and the ceramic heating element is clamped in the fixing ring 250, realizing the accurate installation and fixation of the air blowing device 200. The air outlet of the fan 260 faces the ceramic heating element 270 and guides the airflow to the second aperture 130, ensuring that the airflow can be smoothly discharged after passing through the ceramic heating element 270. This design accurately clamps the heating element and the fan 260 module inside the hair dryer 260, not only improving the installation accuracy of the components, but also avoiding the cumbersome operation of the traditional screw fastening mode.

[0045] In summary, the air blowing device 200 clamps the first clamping structure and the second clamping structure through movement and rotation, realizing an efficient and stable assembly method. Compared with the screw fastening design of the traditional hair dryer 260, this scheme greatly simplifies the assembly process and reduces the production and maintenance costs. The reasonable wire layout ensures the safety and reliability of the internal circuit and reduces the risk of interference between components. In addition, the clamping mode of the ceramic heating element 270 in the fixing ring 250 accurately positions the components and prevents them from shifting or loosening during use, effectively reducing vibration and noise. The shock-absorbing effect of the ceramic heating element 270 is enhanced in the high-temperature operating state, preventing internal components from being deformed or damaged due to thermal stress.

[0046] It should be noted that the fixed ring 250 is silica gel, which can achieve the effect of reducing vibration; it can also be an aluminum alloy heat dissipation strip, which can achieve the effect of heat dissipation.

[0047] Please refer to Figure 13 The fixed ring 250 is provided with a fixed hole 251, and the fixed ring 250 is provided with a fastening groove 252 on the inner wall of the fixed hole 251, the fastening groove 252 is in communication with the fixed hole 251, the ceramic heating element 270 is in the shape of a cylinder, the ceramic heating element 270 extends into the fixed hole 251, and the outer circumferential side wall thereof is clamped in the fastening groove 252; the inner shell includes a first inner shell 241 and a second inner shell 242, the first inner shell 241 is provided with an annular flange 2411, the second inner shell 242 is provided with an annular groove 2421, the second inner shell 242 is provided with an annular abutment portion 2422 on the inner side of the annular groove 2421, the fixed ring 250 abuts the end portion of the annular abutment portion 2422, the annular flange 2411 is clamped in the annular groove 2421, and the end of the fixed ring 250 away from the annular abutment portion 2422 abuts the inner wall of the first inner shell 241, and the outer circumferential side wall of the fixed ring 250 abuts the annular flange 2411.

[0048] Specifically, the fastening groove 252 is in communication with the fixed hole 251, the ceramic heating element 270 is designed in the shape of a cylinder, the ceramic heating element 270 extends into the fixed hole 251, and the outer circumferential side wall thereof is clamped in the fastening groove 252, which ensures that the ceramic heating element 270 is stably and centrally positioned in the fixed ring 250. The ceramic heating element 270 is limited by the fastening groove 252, which avoids vibration and instability caused by position deviation during installation, and the elastic material of the fixed ring 250 can absorb mechanical vibration during operation, thereby reducing noise and improving user experience, ensuring the long-term stability of the heating element and avoiding displacement or loosening caused by long-term use.

[0049] The fixed ring 250 abuts the end portion of the annular abutment portion 2422, the annular flange 2411 is clamped in the annular groove 2421, and the end of the fixed ring 250 away from the annular abutment portion 2422 abuts the inner wall of the first inner shell 241, and the outer circumferential side wall of the fixed ring 250 abuts the annular flange 2411. The cooperation between the annular flange 2411 of the first inner shell 241 and the annular groove 2421 of the second inner shell 242 ensures the stability of the entire inner shell structure and prevents the components from loosening and displacing. Through the elasticity of the fixed ring 250, the close cooperation between the first inner shell 241 and the second inner shell 242 provides a good heat dissipation channel for the ceramic heating element 270, avoiding safety hazards caused by poor heat dissipation.

[0050] Through the optimized design of the ceramic heating element 270 and the fixing ring 250, the first inner shell 241, and the second inner shell 242, precise installation, shock absorption, and heat dissipation optimization of the heating element are achieved. The clamping structure of the annular flange 2411 and the annular groove 2421 not only improves the stability of the assembly but also ensures the safety and durability of the product during long-term use. Compared with the traditional screw fixing method, this scheme significantly reduces the assembly difficulty and noise during operation, providing a more reliable and efficient solution for the PTC ceramic heating hair dryer 260.

[0051] Please refer to Figure 9 and Figure 11 The end of the air moving device 200 close to the second aperture 130 is provided with a fixing cover 230, and when the air moving device 200 extends into the accommodating channel 110 through the second aperture 130, the fixing cover 230 is clamped with the outer peripheral wall of the shell 100.

[0052] Specifically, the fixing cover 230 is clamped with the first inner shell 241, and the end of the air moving device 200 close to the second aperture 130 is provided with a fixing cover 230, and when the air moving device 200 extends into the accommodating channel 110 through the second aperture 130, the fixing cover 230 is clamped with the outer peripheral wall of the shell 100. The design of the fixing cover 230 has a dual function: on the one hand, it provides additional physical support and limiting action for the assembly after the air moving device 200 is completely installed, ensuring that the air moving device 200 does not loosen during use; on the other hand, the clamping structure of the fixing cover 230 makes the assembly process faster, avoiding complex tightening operations. This design effectively solves the problem of loose internal components, increased vibration or noise during operation of traditional hair dryers 260. Through the structural design of the fixing cover 230, the air moving device 200 not only can realize quick docking with the shell 100, but also can maintain stability and low noise during use. This design is particularly suitable for scenarios that require frequent disassembly and assembly, improving the maintenance convenience and user experience of the product. At the same time, the cooperation of the first clamping structure and the second clamping structure, and the fixing cover 230 improves the stability of the assembly, avoids noise problems caused by vibration, and improves the service life of the product.

[0053] Please refer to Figure 7 , Figure 8 , Figures 10 to 12In the embodiment, the first clamping structure includes a plurality of first clamping portions 221 and a plurality of first avoiding grooves 222, the plurality of first clamping portions 221 and the plurality of first avoiding grooves 222 are staggered; the second clamping structure includes an annular fixing groove 151, a plurality of second clamping portions 152 and a plurality of second avoiding grooves 153, the annular fixing groove 151 is communicated with each of the plurality of second avoiding grooves 153, the plurality of second clamping portions 152 and the plurality of second avoiding grooves 153 are staggered; the plurality of first clamping portions 221 are matched with the plurality of second avoiding grooves 153 in size, shape and position, and the plurality of second clamping portions 152 are matched with the plurality of first avoiding grooves 222 in size, shape and position;

[0054] The air moving device 200 moves towards the first aperture 120 to pass each of the plurality of first clamping portions 221 through each of the plurality of second avoiding grooves 153, and to avoid each of the plurality of second clamping portions 152 through the plurality of first avoiding grooves 222, so as to arrange each of the plurality of first clamping portions 221 in the annular fixing groove 151;

[0055] When each of the plurality of first clamping portions 221 is arranged in the annular fixing groove 151, the air moving device 200 rotates to abut the plurality of first clamping portions 221 and the plurality of second clamping portions 152.

[0056] Specifically, in the assembly process, the air moving device 200 moves towards the first aperture 120 through the second aperture 130 to pass each of the plurality of first clamping portions 221 through each of the plurality of second avoiding grooves 153, and to avoid each of the plurality of second clamping portions 152 through the plurality of first avoiding grooves 222. This design enables the air moving device 200 to be quickly docked with the shell 100, avoiding the trouble of traditional multiple debugging. When each of the plurality of first clamping portions 221 is arranged in the annular fixing groove 151, the air moving device 200 is rotated to abut each of the plurality of first clamping portions 221 and each of the plurality of second clamping portions 152, thereby completing the final fixing. This rotating clamping method not only simplifies the assembly operation, but also improves the reliability of the connection.

[0057] In the embodiment, the plurality of first clamping portions 221 have the same thickness, and the plurality of first clamping portions 221 have the same thickness as the annular fixing groove 151.

[0058] Specifically, the plurality of first clamping portions 221 have the same thickness as the annular fixing groove 151. This design ensures that the plurality of first clamping portions 221 can be smoothly embedded in the annular fixing groove 151 during assembly, and precise limiting and close fitting are achieved after clamping is completed.

[0059] Please refer to Figure 8 and Figure 10In the embodiment, the housing 100 is provided with a protrusion 154 on the inner wall of the accommodation channel 110, and the first clamping portion 221 is provided with an arc-shaped recess 2211 facing the inner wall of the accommodation channel 110. When each first clamping portion 221 is arranged in the annular fixing groove 151, the air guiding device 200 is rotated to clamp the protrusion 154 in the arc-shaped recess 2211.

[0060] Specifically, the air guiding device 200 moves along the accommodation channel 110 and is clamped in the annular fixing groove 151 through the first clamping portion 221. After the air guiding device 200 is completely positioned, further rotation operation makes the protrusion 154 on the inner wall of the housing 100 clamped in the arc-shaped recess 2211 of the first clamping portion 221. The arc-shaped recess 2211 is in communication with the annular fixing groove 151, which ensures that the protrusion 154 can be accurately clamped in the arc-shaped recess 2211 when the air guiding device 200 is rotated. The clamping structure effectively solves the problems of misplacement and looseness of components in traditional assembly, and improves the accuracy of connection.

[0061] Please refer to Figure 10 In the embodiment, the protrusion 154 is in a semicircular arc shape.

[0062] Specifically, the protrusion 154 is in a semicircular arc shape, and the protrusion 154 is matched with the arc-shaped recess 2211. The semicircular arc shape of the protrusion 154 makes the contact surface between the air guiding device 200 and the arc-shaped recess 2211 smooth during rotation, reduces the friction in the clamping process, and makes the operation more smooth.

[0063] Please refer to Figure 7 and Figure 9 In the embodiment, when the protrusion 154 is clamped in the arc-shaped recess 2211, the wiring hole 210 is in communication with the third aperture 140, and the central axis of the wiring hole 210 is the same as the central axis of the third aperture 140.

[0064] Specifically, when the protrusion 154 is clamped in the arc-shaped recess 2211, the wiring hole 210 is in communication with the third aperture 140, and the central axis of the wiring hole 210 is the same as the central axis of the third aperture 140. This makes the internal wires of the air guiding device 200 pass through the wiring hole 210 and the third aperture 140 in sequence along the set path, and be electrically connected with the handle 300, further improving the accuracy of wire arrangement.

[0065] Please refer to Figure 9 and Figure 11In the embodiment, the inner circumferential wall of the fixed cover 230 is provided with a snap ring 231, the outer circumferential wall of the shell 100 is provided with a snap groove 160, and the snap ring 231 is clamped in the snap groove 160 to clamp the fixed cover 230 and the outer circumferential wall of the shell 100. The snap ring 231 is made of a deformable material, and the outer circumferential wall of the shell 100 is provided with an annular convex arc 170. The annular convex arc 170 is arranged on one side of the snap groove 160. During the clamping of the snap ring 231 in the snap groove 160, the snap ring 231 is elastically deformed to pass through the annular convex arc 170 and is clamped in the snap groove 160.

[0066] Specifically, when the fixed cover 230 is installed, that is, during the clamping of the snap ring 231 in the snap groove 160, the snap ring 231 is elastically deformed to pass through the annular convex arc 170 and is clamped in the snap groove 160, and after resetting, the fixed cover 230 is tightly clamped with the shell 100. This structure reduces the friction during clamping, making the installation process smoother, and the assembly can be completed without complex tools. Prevent the fixed cover 230 from loosening or falling off during use.

[0067] Please refer to Figure 1 and Figure 4 In the embodiment, the PTC ceramic heating hair dryer 10 convenient to assemble further includes a nozzle 400 clamped on the fixed cover 230; the fixed cover 230 is provided with a first ventilation hole 232 communicating with the accommodating channel 110, and the nozzle 400 is provided with a second ventilation hole 410, and the air driving device 200 passes through the first ventilation hole 232 and the second ventilation hole 410 in sequence to blow air.

[0068] Specifically, the fixed cover 230 is provided with the first ventilation hole 232 communicating with the accommodating channel 110; and the nozzle 400 is provided with the second ventilation hole 410 communicating with the first ventilation hole 232. This structure ensures that the airflow of the air driving device 200 can pass through the fixed cover 230 and the nozzle 400 in sequence, realizes smooth airflow output, and avoids airflow disorder or blockage. In addition, the installation of the nozzle 400 not only simplifies the assembly process of the product, but also facilitates the cleaning and maintenance of the inside of the hair dryer 260. The user can quickly access the air driving device 200 by disassembling the rear cover 500, which facilitates the cleaning of dust and debris and prolongs the service life of the equipment.

[0069] Please refer to Figure 1 and Figure 4 In the embodiment, the PTC ceramic heating hair dryer 10 convenient to assemble further includes a rear cover 500 clamped on the first aperture 120, and the rear cover 500 is provided with a third ventilation hole 510 communicating with the accommodating channel 110, and external air enters the air driving device 200 through the third ventilation hole 510.

[0070] Specifically, the rear cover 500 is covered on the first aperture 120 of the housing 100 by clamping or fastening, and is in communication with the accommodating channel 110. The third vent hole 510 on the rear cover 500 ensures that external air can smoothly enter the accommodating channel 110, and is accelerated and heated by the air driving device 200 to form a strong air outlet effect, and then is discharged through the first vent hole 232 and the second vent hole 410. In addition, the installation of the rear cover 500 not only simplifies the assembly process of the product, but also facilitates the cleaning and maintenance of the inside of the hair dryer 260.

[0071] Of course, the utility model also can have other various implementation manners, based on this implementation manner, other implementation manners obtained by the ordinary skilled person in the art without any creative labor all belong to the range protected by the utility model.

Claims

1. A PTC ceramic heating hair dryer convenient to assemble, comprising a shell, an air blowing device and a handle, the shell is provided with a containing passage, a first orifice, a second orifice and a third orifice communicated with the containing passage, characterized in that, The air expelling device extends into the accommodating channel through the second hole, and the air expelling device is provided with a wire hole on the side thereof. An outer peripheral wall of the air expelling device is provided with a first clamping structure at one end close to the first hole. The shell is provided with a second clamping structure on the inner wall of the accommodating channel. The air expelling device is clamped by moving and rotating the first clamping structure and the second clamping structure, and the wire hole is in communication with the third hole, so that the electric wire of the air expelling device is electrically connected with the handle through the wire hole and the third hole. The air expelling device comprises an inner shell, a fixing ring, a fan and a ceramic heating element. The fan and the fixing ring are clamped in the inner shell, and the ceramic heating element is clamped in the fixing ring. The fan blows towards the ceramic heating element and the second hole.

2. The PTC ceramic heating hair dryer for easy assembly according to claim 1, characterized in that, The fixing ring is provided with a fixing hole, and the fixing ring is provided with a fastening groove on the inner wall of the fixing hole. The fastening groove is in communication with the fixing hole. The ceramic heating element is in the shape of a cylinder. The ceramic heating element extends into the fixing hole, and the outer peripheral wall thereof is clamped in the fastening groove. The inner shell comprises a first inner shell and a second inner shell. The first inner shell is provided with an annular flange. The second inner shell is provided with an annular arc-shaped groove. The second inner shell is provided with an annular abutting portion on the inner side of the annular arc-shaped groove. The fixing ring is abutted with the end portion of the annular abutting portion. The annular flange is clamped in the annular arc-shaped groove. The end of the fixing ring away from the annular abutting portion is abutted with the inner wall of the first inner shell. The outer peripheral wall of the fixing ring is abutted with the annular flange.

3. The PTC ceramic heat generating hair dryer for easy assembly according to claim 2, characterized by, The first clamping structure comprises a plurality of first clamping portions and first avoiding grooves. The plurality of first clamping portions and the plurality of first avoiding grooves are staggered. The second clamping structure comprises an annular fixing groove, a plurality of second clamping portions and second avoiding grooves. The annular fixing groove is in communication with each of the second avoiding grooves. The plurality of second clamping portions and the plurality of second avoiding grooves are staggered. The plurality of first clamping portions are matched with the plurality of second avoiding grooves in size, shape and position. The plurality of second clamping portions are matched with the plurality of first avoiding grooves in size, shape and position. The air expelling device is moved towards the first hole, so that each of the first clamping portions passes through each of the second avoiding grooves, and each of the first clamping portions avoids each of the second clamping portions through the first avoiding grooves, so that each of the first clamping portions is arranged in the annular fixing groove. When each of the first clamping portions is arranged in the annular fixing groove, the air expelling device is rotated, so that the first clamping portions are abutted with the second clamping portions.

4. The PTC ceramic heating hair dryer for easy assembly according to claim 3, characterized in that, The shell is provided with a convex portion on the inner wall of the accommodating channel. The first clamping portion is provided with an arc-shaped groove towards the inner wall of the accommodating channel of the shell. The convex portion is matched with the arc-shaped groove. When each of the first clamping portions is arranged in the annular fixing groove, the air expelling device is rotated, so that the convex portion is clamped in the arc-shaped groove.

5. The PTC ceramic heating hair dryer for easy assembly according to claim 4, characterized in that, When the convex portion is clamped in the arc-shaped groove, the wire hole is in communication with the third hole, and the central axis of the wire hole is the same as the central axis of the third hole.

6. The PTC ceramic heat generating hair dryer for easy assembly according to claim 4, wherein The fixed cover is arranged on one end of the air expelling device close to the second aperture, and is clamped with the outer circumferential wall of the shell when the air expelling device extends into the accommodating channel through the second aperture.

7. The PTC ceramic heat generating hair dryer for easy assembly according to claim 6, characterized by, The inner circumferential wall of the fixed cover is provided with a clamping ring, and the outer circumferential wall of the shell is provided with a clamping groove, the clamping ring is clamped in the clamping groove to clamp the fixed cover with the outer circumferential wall of the shell.

8. The PTC ceramic heat generating hair dryer for easy assembly according to claim 7, characterized by, The clamping ring is made of deformable material, and the outer circumferential wall of the shell is provided with an annular convex arc, the annular convex arc is arranged on one side of the clamping groove, and the clamping ring is elastically deformed to pass through the annular convex arc and is clamped in the clamping groove during clamping in the clamping groove.

9. The PTC ceramic heat generating hair dryer for easy assembly according to claim 6, wherein The PTC ceramic heating hair dryer convenient to assemble further comprises a nozzle, the nozzle is clamped on the fixed cover, the fixed cover is provided with a first air hole communicating with the accommodating channel, the nozzle is provided with a second air hole, and the air expelling device sequentially passes through the first air hole and the second air hole to blow air.

10. The PTC ceramic heat generating hair dryer for easy assembly according to claim 1, characterized by, The PTC ceramic heating hair dryer convenient to assemble further comprises a rear cover, the rear cover is arranged on the first aperture, the rear cover is provided with a third air hole communicating with the accommodating channel, and external air flows into the air expelling device through the third air hole.

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