Hand-held hair dryer

Abstract

The application discloses a handheld blower, comprising a main body and a handle, the main body comprises a main body shell, and an air inlet end is arranged on the main body shell; the handle comprises a handle shell connected to the air inlet end, the air inlet end comprises a first connecting part and a second connecting part, the handle shell comprises a first shell and a second shell which are detachably connected, an end of the first shell extends into the air inlet end and is clamped to an inner wall of the first connecting part; the end is clamped to the first connecting part in a rotatable manner towards the center of the handle; the second shell is clamped to the second connecting part, and after the first shell and the second shell are connected, the first shell is prevented from rotating. The handheld blower can realize stable connection of the handle and the main body without the aid of bolts, thereby improving assembly efficiency.

Description

Technical Field

[0001] This invention relates to the field of hair care appliances, and particularly to a handheld hair dryer. Background Technology

[0002] Handheld hair dryers, as an inexpensive and easy-to-use hair care tool, have become an essential household appliance. In recent years, the appearance and function of handheld hair dryers have undergone significant changes, and hair dryers are gradually developing towards high-speed hair dryers.

[0003] Existing hair dryers generally consist of a main body with an air outlet and a handle attached to the main body. The air inlet is usually located at the other end of the handle or main body. Users operate the hair dryer by holding the handle. To reduce the size of the hair dryer, current models typically integrate the fan assembly, PCB board, or other functional components into the handle. For example, mainstream high-speed hair dryers on the market have a fluid channel for airflow formed between the main body and the handle. The air inlet is located at the bottom of the handle, and the fan assembly is housed in the fluid channel on the handle. In addition, other functional components may be installed in the handle. While this reduces the size of the hair dryer, it increases the weight of the handle, requiring a more robust connection structure between the handle and the main body.

[0004] Currently, bolts are mainly used to securely connect the handle and the main body. This is not only cumbersome and affects assembly efficiency, but also easy to damage the handle housing and increase the defect rate when drilling screw holes and tightening bolts. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a handheld hair dryer that eliminates the need for bolt holes between the handle and the main body, achieving a stable connection without bolts, thereby improving the efficiency of parts production and hair dryer assembly.

[0006] This invention is achieved through the following technical solution:

[0007] A handheld hair dryer includes a main body and a handle connected to the main body. The main body includes a main body shell with an air inlet end provided thereon. The handle includes a handle shell connected to the air inlet end. The air inlet end includes a first connecting part and a second connecting part, which together form the air inlet end.

[0008] The handle housing includes a first housing and a second housing that are detachably connected. The end of the first housing extends into the air inlet and is engaged with the inner wall of the first connecting part.

[0009] A first locking block is provided on the outer wall of the end portion, and a second locking block is provided on the inner wall of the first connecting portion. The first locking block and the second locking block lock the first housing onto the first connecting portion in the axial direction of the handle. The side wall of the end portion near the second housing abuts against the second housing or the air inlet end, so that the end portion rotates toward the center of the handle to lock the first locking block onto the second locking block.

[0010] The second housing engages with the second connecting part, thereby preventing the first housing from rotating after the first housing is connected to the second housing.

[0011] Furthermore, the second housing is disposed outside the second connecting portion.

[0012] Furthermore, the second housing is engaged with the outer wall of the second connecting part, a second engaging block is provided on the inner wall of the second housing, and a second engaging groove is provided on the outer wall of the second connecting part to engage with the second engaging block.

[0013] Furthermore, the second latching block and the second latching groove extend in a direction perpendicular to the handle axis.

[0014] Furthermore, the inner diameter of the first connecting portion is larger than the inner diameter of the second connecting portion.

[0015] Furthermore, a positioning block is also provided on the air inlet end, the positioning block is located between the second housing and the first housing, and the second housing and the first housing abut against the positioning block.

[0016] Furthermore, point A is taken on the side wall near the second housing at the end and abutting against the second housing or the air inlet. The first housing rotates towards the center of the handle with point A as the fulcrum so that the end is engaged in the first connecting part. Along the handle axis, the first locking block is located diagonally above point A.

[0017] Furthermore, the end sidewall connecting point A and the first card block is arc-shaped at least at point A.

[0018] Furthermore, the first housing and the second housing are connected by snap-fit ​​and / or bolts to form the handle housing.

[0019] Furthermore, the handle housing is an inner handle housing, and the hair dryer also includes a outer handle housing fitted over the inner handle housing.

[0020] On the other hand, this application also discloses a handheld hair dryer, including a main body with an air outlet and a handle connected to the main body; the main body includes a main body shell, and the main body shell is provided with a receiving cavity for mounting components; the components include an air guide and a heater located between the air guide and the air outlet, the air guide is used to guide the airflow towards the heater, the receiving cavity is also provided with a central tube, the central tube is generally located on the central axis of the main body shell, and the airflow flows around the outer wall of the central tube towards the air outlet; a plasma generator is provided in the central tube, and at least two mounting holes are provided through the side wall of the central tube, the positive ion release end and the negative ion release end of the plasma generator extend from the mounting holes to the outside of the central tube;

[0021] The heater includes a support member, and the air guide member includes an air guide plate and a connecting part, the connecting part being connected to the support member to form the central tube;

[0022] A PCB board is also provided in the receiving cavity on the side of the air guide plate away from the connecting part, and a cavity is provided in the connecting part; the cavity connects the central pipe and the side of the air guide plate near the PCB board.

[0023] Furthermore, the plasma generator is located within the cavity.

[0024] Furthermore, the support member is provided with a connecting plate, and the plasma generator is mounted on the connecting plate.

[0025] Furthermore, the connecting plate divides the internal space of the support into a front cavity and a rear cavity, wherein the front cavity is close to the connecting part and the rear cavity is close to the air outlet; the plasma generator is located in the front cavity, and the connecting part extends into the front cavity and is fixedly connected to the connecting plate.

[0026] Furthermore, the connecting plate is also provided with a mounting groove, and the mounting groove is provided with a buckle, through which the plasma generator is snapped into the mounting groove.

[0027] Furthermore, the positive ion releasing end and the negative ion releasing end extend to the end of the support member near the air outlet and are spaced apart along the outer periphery of the support member.

[0028] Furthermore, at least two slots are provided on the outer wall of the central tube along the axial direction of the main body shell. The slots are respectively connected to the mounting holes, and the positive ion release end and the negative ion release end extend along different slots.

[0029] Furthermore, an inner tube is fitted on the outer wall of the central tube outside the slot, and the inner wall of the inner tube abuts against the top of the slot, so that different slots and the inner wall of the inner tube form relatively independent spaces. The positive ion release end and the negative ion release end extend along the space to the end of the support near the air outlet.

[0030] Furthermore, the heater also includes an outer tube body and a heating wire disposed between the inner tube body and the outer tube body. A fluid channel for airflow is formed between the inner tube body and the outer tube body, and the positive ion release end and the negative ion release end extend into the fluid channel.

[0031] In another aspect, this application also discloses a handheld hair dryer, including a main body, a handle connected to the main body, and a fluid channel. The fluid channel includes a first fluid channel disposed on the main body and a second fluid channel disposed on the handle, and the first fluid channel and the second fluid channel are fluidly connected. An air outlet and a PCB board are respectively disposed at both ends of the main body along its axial direction, and an air inlet is also disposed on the side wall of the main body. The air inlet, the first fluid channel, and the air outlet are fluidly connected.

[0032] The handle is connected to the air inlet so that the second fluid channel is in fluid communication with the air inlet; the handle is provided with a control key, and the handle and / or the air inlet is also provided with a cable inlet hole, through which the cable connects to the control key and enters the body;

[0033] The control key is located on the side of the handle near the air outlet. The side wall of the handle is also provided with a first cable groove for cable routing. The first cable groove is connected to the cable inlet hole, and the cable at least partially runs through the first cable groove into the main body.

[0034] The first groove extends along the side wall of the handle from the control key toward the side of the handle closer to the PCB board.

[0035] Furthermore, the cable inlet is located on the side of the handle or air inlet end near the PCB board.

[0036] Furthermore, the first cable groove includes at least two first branch cable grooves, which extend along different paths on the side wall of the handle.

[0037] Furthermore, at least two of the first branch grooves extend along the handle sidewalls on both sides of the control key.

[0038] Furthermore, along the handle axis, the cable inlet is positioned closer to the main body than the control key, and the first cable groove smoothly transitions between the cable inlet and the control key.

[0039] Furthermore, a reinforcing rib is provided in the first cable groove, and the reinforcing rib is arranged along the path of the first cable groove so that the reinforcing rib forms a structure that separates the cables.

[0040] Furthermore, the width of the first groove is adapted to the cable disposed therein.

[0041] Furthermore, the handle includes an inner handle housing and an outer handle housing fitted outside the inner handle housing, and the first groove is disposed on the outer wall of the inner handle housing.

[0042] Furthermore, the outer wall of the inner shell of the handle is also provided with a mounting platform for installing control keys. Along the axis of the handle, a second wire groove is also provided on the outer wall of the inner shell of the handle below the mounting platform. Both the first wire groove and the second wire groove are connected to the mounting platform. The cable enters the mounting platform through the second wire groove and connects with the control key, and then enters the main body through the first wire groove.

[0043] Furthermore, the mounting platform is also equipped with a third cable tray for wiring.

[0044] Compared with the prior art, the advantages of this invention are:

[0045] 1. By setting a first connecting part, a second connecting part, a first housing, a second housing, a first locking block and a second locking block, and making the first housing lock into the first connecting part in a rotating manner, and the second housing lock onto the second connecting part and can connect with the first housing to prevent it from rotating, thereby preventing the first housing from rotating out of the first connecting part, so that the handle housing can be connected to the main body without the aid of bolts.

[0046] 2. By adopting a rotating snap-fit ​​assembly method, the first housing can only be snapped onto the air inlet end by rotation, and can only be removed from the air inlet end by rotation. Therefore, compared with the traditional method of snapping or removing the snap-fit ​​blocks by elastic deformation between the housings, this connection structure is more stable and will not damage the housing during assembly. In addition, this assembly structure allows for an increase in the wall thickness of the handle housing and the air inlet end during the design, thereby improving the strength and making the connection between the handle and the main body more stable.

[0047] 3. By snapping the first housing inside the air inlet and the second housing outside the air inlet, the strength of the connection can be guaranteed while minimizing the reduction of the fluid channel.

[0048] 4. By setting the inner diameter of the first connecting part to be larger than that of the second connecting part, the fluid channel can be further enlarged, reducing the influence of the connecting structure on the size of the fluid channel.

[0049] 5. By setting the first locking block to be located diagonally above the rotation fulcrum of the first housing, the rotation angle of the first housing during installation can be reduced, so that the first housing only needs to be rotated by a small angle to be locked onto the second locking block, thereby facilitating quick assembly. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the overall structure of a handheld hair dryer according to an embodiment of the present invention;

[0051] Figure 2 This is a disassembly diagram of the overall structure of a handheld hair dryer according to an embodiment of the present invention. Figure 1 ;

[0052] Figure 3 This is a disassembly diagram of the inner shell and main body structure of a handheld hair dryer according to an embodiment of the present invention;

[0053] Figure 4 This is a cross-sectional schematic diagram of the connection structure between the inner shell of the handle and the main body of a handheld hair dryer according to an embodiment of the present invention.

[0054] Figure 5 for Figure 4 Enlarged schematic diagram of section B of the structure;

[0055] Figure 6 This is a schematic diagram illustrating the connection structure between the first housing and the air inlet.

[0056] Figure 7 This is a structural schematic diagram used to illustrate a certain state during the installation of the first housing;

[0057] Figure 8 This is a partial structural diagram of the first housing of a handheld hair dryer according to an embodiment of the present invention;

[0058] Figure 9 This is a schematic diagram of the air inlet end of a handheld hair dryer according to an embodiment of the present invention;

[0059] Figure 10 This is a partial structural schematic diagram of the second housing of a handheld hair dryer according to an embodiment of the present invention;

[0060] Figure 11 This is a cross-sectional schematic diagram of the overall structure of a handheld hair dryer according to an embodiment of the present invention;

[0061] Figure 12 This is a schematic diagram of the internal structure of the receiving cavity according to an embodiment of the present invention;

[0062] Figure 13 This is a schematic diagram illustrating the positional relationship between the PCB board and the central tube according to an embodiment of the present invention;

[0063] Figure 14for Figure 13 Cross-sectional view of the middle structure;

[0064] Figure 15 for Figure 13 Explosion diagram of the middle structure Figure 1 ;

[0065] Figure 16 for Figure 13 Explosion diagram of the middle structure Figure 2 .

[0066] Figure 17 This is a cross-sectional schematic diagram of the overall structure of a hair dryer according to an embodiment of the present invention;

[0067] Figure 18 This is a disassembly diagram of a hair dryer handle structure according to an embodiment of the present invention;

[0068] Figure 19 This is a schematic diagram of the inner shell structure of a hair dryer handle according to an embodiment of the present invention. Figure 1 ;

[0069] Figure 20 This is a schematic diagram of the inner shell structure of a hair dryer handle according to an embodiment of the present invention. Figure 2 . Implementation

[0070] The following detailed, non-limiting description of the invention's technical solutions, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0071] like Figures 1-3As shown, a handheld hair dryer according to an embodiment of the present invention includes a main body 1 having an air outlet 172 and a handle 2 connected to the main body 1. An air inlet 171 is provided at the end of the handle 2 away from the main body 1. A fluid channel for transmitting fluid between the air inlet 171 and the air outlet 172 is defined in both the handle 2 and the main body 1. The main body 1 includes a main body shell 11, and an air inlet end 112 is also provided on the side wall of the main body shell 11. The handle 2 includes a handle housing, and the air inlet end 112 protrudes from the side wall of the main body shell 11 toward the handle 2, thereby forming a connection portion for connection with the handle housing. The handle housing is fixedly connected to the air inlet end 112, thereby achieving connection with the main body 1 and enabling communication between the fluid channel in the handle 2 and the fluid channel in the main body 1.

[0072] In this embodiment, the handle housing is the inner handle housing 22, and the handle 2 also includes a outer handle housing 21 sleeved on the outside of the inner handle housing 22, wherein the inner handle housing 22 is connected to the air inlet end 112. The outer handle housing 21 is fixed to the inner handle housing 22, specifically by bolt connection, snap-fit, adhesive bonding or welding. The air inlet end 112 and the inner handle housing 22 are generally cylindrical, but can also be other non-cylindrical shapes. The air inlet end 112 includes a first connecting part 33 and a second connecting part 34, which together form the air inlet end 112. The air inlet end 112 can be integrally formed with the main body housing 11, and the first connecting part 33 and the second connecting part 34 are just two parts of the housing of the air inlet end 112. The inner handle housing 22 includes a first housing 221 and a second housing 222, which are detachably connected and together form the inner handle housing 22 with a fluid channel.

[0073] like Figure 2 and Figures 4-8 As shown, the first housing 221 is connected to the first connecting part 33, and the second housing 222 is connected to the second connecting part 34. The end 37 of the first housing 221 extends into the air inlet 112 and engages with the inner wall of the first connecting part 33. Specifically, a first locking block 371 is provided on the outer wall of the end 37 of the first housing 221, and a second locking block 35 is provided on the inner wall of the first connecting part 33. Through the engagement of the first locking block 371 and the second locking block 35, the first housing 221 is axially engaged with the first connecting part 33. The side of the end 37 of the first housing 221 closest to the second housing 222 abuts against the air inlet 112 (e.g., ...). Figure 6 The middle side wall 372 abuts against the air inlet end 112. During installation, the end 37 of the first housing 221 is pushed into the air inlet end 112 from below. Due to the obstruction of the second locking block 35, directly pushing along the axial direction of the handle 2 cannot push the first locking block 371 above the second locking block 35. At this time, the assembler only needs to rotate the first housing 221 towards the center of the handle 2 (refer to...). Figure 7This causes the first locking block 371 and the second locking block 35 to be misaligned axially in the handle 2. Then, the first housing 221 is pushed further so that the first locking block 371 reaches above the second locking block 35. Finally, the first housing 221 is rotated to reset. At this point, the first housing 221 is locked onto the first connecting part 33, meaning the first housing 221 is connected to the air inlet end 112. Because the first locking block 371 and the second locking block 35 are locked axially in the handle 2, and the side wall 372 abuts against the air inlet end 112, the first housing 221 is locked into the air inlet end 112 and will not fall off. Only when the first housing 221 is rotated again, causing the first locking block 371 and the second locking block 35 to be misaligned, and then the first housing 221 is pulled down, can the first housing 221 be removed from the air inlet end 112.

[0074] like Figure 2 , Figure 9 and Figure 10 As shown, the second housing 222 is engaged with the second connecting part 34, and the second housing 222 cannot rotate toward the center of the handle 2 when it is connected to the second connecting part 34. Thus, after the second housing 222 is connected to the first housing 221, under the constraint of the second housing 222, the first housing 221 and the handle inner housing 22 as a whole cannot rotate relative to the air inlet end 112, so the first housing 221 cannot be disassembled from the first connecting part 33. Therefore, the handle inner housing 22 as a whole can be connected to the air inlet end 112.

[0075] By using a first housing 221 for installation and disassembly via a rotational snap-fit, and a second housing 222 to prevent the first housing 221 from rotating, the inner housing 22 of the handle can be fixed to the air inlet 112, thus connecting the inner housing 22 of the handle to the main body 1 of the fan. Furthermore, due to the rotational snap-fit ​​method, the assembly process does not apply significant assembly force to the handle 2 housing and the air inlet 112 housing, and there is no need to drill screw holes, thus causing minimal damage to the housing strength. Simultaneously, the rotational snap-fit ​​method requires less wall thickness for the handle 2 housing and the air inlet 112, allowing for assembly even with thicker walls. Therefore, the connection between the handle 2 and the main body 1 is more secure, and the entire structure does not use bolts.

[0076] like Figures 5-8As shown, since the end 37 abuts against the air inlet 112 near the side wall 372 of the second housing 222, the first housing 221 rotates around a point on the side wall 372 as a pivot point during rotation. This pivot point is denoted as point A, which is generally the top point of the side wall 372, as shown in the attached figure in this embodiment. Preferably, the first locking block 371 is located diagonally above point A along the axis of the handle 2, meaning the line connecting the first locking block 371 and point A forms an acute angle α with the horizontal plane. This arrangement reduces the rotation angle of the first housing 221 during installation, allowing the first housing 221 to rotate only a small angle to offset the first locking block 371 and the second locking block 35 axially in the handle 2, thus facilitating quick installation. Furthermore, to facilitate installation, the side wall of the end 37 between the connection point A and the first locking block 371 can be made arc-shaped, or at least arc-shaped at point A, which facilitates smooth and rapid rotation of the first housing 221.

[0077] like Figure 2 As shown, in this embodiment, the second housing 222 is connected to the outer wall of the second connecting part 34, and the first housing 221 and the second housing 222 are respectively connected to the inner and outer sides of the air inlet pipe, thereby ensuring the connection strength and reducing the impact of the connection between the handle 2 and the main body 1 on the size of the fluid channel. Alternatively, the inner diameter of the first connecting part 33 can be set to be larger than the inner diameter of the second connecting part 34, thereby further expanding the fluid channel.

[0078] like Figure 9 and Figure 10 As shown, specifically, the inner wall of the second housing 222 is provided with a plurality of second snap-fit ​​blocks 5, and the outer wall of the second connecting part 34 is provided with a plurality of second snap-fit ​​grooves 36 that engage with the second snap-fit ​​blocks 5. Preferably, the second snap-fit ​​blocks 5 and the second snap-fit ​​grooves 36 extend in a direction perpendicular to the axis of the handle 2, which can effectively prevent the second housing 222 from rotating relative to the second connecting part 34, thereby preventing the first housing 221 from rotating. The first housing 221 and the second housing 222 can also be assembled into the inner housing 22 of the handle by snap-fit. Of course, in order to improve the sealing performance, the connection between the first housing 221 and the second housing 222 can also be fastened with bolts.

[0079] The implementation principle of this embodiment is as follows: During installation, firstly, the first housing 221 is inserted into the air inlet 112 from below, near the first connecting part 33. The first housing 221 is rotated towards the center of the handle 2, causing the first locking block 371 on the outer wall of the first housing 221 to misalign with the second locking block 35 on the inner wall of the air inlet 112. Then, the first housing 221 is pushed while simultaneously rotating and resetting, so that the first locking block 371 engages with the second locking block 35. At this point, the first housing 221 is connected to the air inlet 112. Next, the end of the second housing 222 with the second locking block 5 is attached to the outer wall of the second connecting part 34, so that the second locking block 5 engages in the second locking groove 36. Finally, the first housing 221 and the second housing 222 are interlocked or bolted together, thus connecting the entire inner handle housing 22 to the fan body 1. Finally, the outer handle housing 21 is connected to the inner handle housing 22.

[0080] To facilitate installation, a positioning block 51 can be provided on the air inlet 112. The positioning block 51 is located between the second housing 222 and the first housing 221. The first housing 221 and the second housing 222 abut against the positioning block 51, so that the first housing 221 and the second housing 222 can be installed independently.

[0081] refer to Figure 1 ,and Figure 11-16 The main body 1 includes a main body shell 11, and the main body shell 11 has a receiving cavity 111 for mounting components, wherein the components include at least an air guide 14 and a heater 15. The heater 15 is disposed between the air guide 14 and the air outlet 172. The air guide 14 is used to guide the airflow flowing from the handle 2 into the main body 1 towards the heater 15 and the air outlet 172, and the airflow can be blown out after being heated by the heater 15.

[0082] like Figures 11-13As shown, the heater 15 includes a support member 151, fins (not shown) arranged circumferentially on the outer wall of the support member 151, and an outer tube 153 sleeved around the outer periphery of the fins, wherein heating wires 155 are provided on the fins. A fluid channel is formed between the support member 151 and the outer tube 153, and the heating wires 155 are located in the fluid channel, so that the airflow can be heated after passing through the heating wires 155. The air guide member 14 includes an air guide plate 144 and a connecting part 141, wherein the connecting part 141 is fixedly connected to the support member 151, thereby fixing the air guide member 14 to the heater 15. The connecting part 141 and the support member 151 are connected to form a central tube 173 that is generally located on the central axis of the main body shell 11. The air guide plate 144 is connected to the end of the connecting part 141 away from the support member 151, that is, the air guide plate 144 is located at the end of the central tube 173 away from the air outlet 172, so that the airflow entering from the handle 2 can be guided towards the central tube 173, and the airflow flows around the outer wall of the central tube 173 to the air outlet 172.

[0083] The air guide plate 144 is provided with a connecting wall that is substantially parallel to the outer tube 153. After the outer tube 153 contacts the air guide plate 144, part of the outer tube 153 overlaps with the connecting wall. This ensures that most of the airflow flows within the first fluid channel 31, effectively reducing the amount of gas flowing out of the first fluid channel 31 between the air guide plate 144 and the outer tube 153, thus reducing noise. The blower also includes an air outlet component 16, which is located at the end of the heater 15 away from the air guide component 14. The air outlet component 16, the heater 15, and the air guide component 14 together define the first fluid channel 31.

[0084] like Figures 12-14 As shown, a plasma generator 12 is installed inside the central tube 173. Two mounting holes 126 are also provided on the outer wall of the central tube 173. The positive ion release end 121 and the negative ion release end 122 of the plasma generator 12 extend from the two mounting holes 126 to the outside of the central tube 173 to release positive and negative ions into the fluid. A PCB board 13 is also provided in the receiving cavity 111 on the side of the air guide plate 144 away from the connecting part 141. The PCB board 13 and the plasma generator 12 are electrically connected by wires. Specifically, for ease of installation, a cavity 143 is provided in the connecting part 141, and the cavity 143 extends through the connecting part 141 along the axial direction of the main body shell 11. Figure 15 and Figure 16 As shown in the diagram, the cavity 143 extends to the air guide plate 144, allowing the cavity 143 to connect the central tube 173 and the side of the air guide plate 144 near the PCB board 13. This arrangement allows the PCB board 13 to face the central tube 173, thus facing the plasma generator 12, facilitating the cabling connection between the PCB board 13 and the plasma generator 12.

[0085] like Figures 14-16 As shown, the air guide plate 144 and the connecting part 141 can be integrally formed. The plasma generator 12 is located inside the central tube 173, specifically in the cavity 143 of the connecting part 141 or in the support member 151. It can be mounted on the connecting part 141 or on the support member 151. In this embodiment, it is preferable to mount the plasma generator 12 on the support member 151, and the plasma generator 12 is also located in the cavity 143 of the connecting part 141. Since the function of the support member 151 is to support the heater 15, and the air guide 14 only serves to guide the airflow, the strength of the support member 151 is greater than that of the connecting part 141 in the design. Therefore, mounting the plasma generator 12 on the support member 151 can be more stable. In addition, the plasma generator 12 is located in the cavity 143. Since the cavity 143 is close to the PCB board 13, it is convenient to install the plasma generator 12.

[0086] Specifically, a connecting plate 158 is provided inside the support member 151. Along the axial direction of the main body shell 11, the connecting plate 158 divides the internal space of the support member 151 into a front cavity 156 and a rear cavity 157. The front cavity 156 is close to the connecting part 141, and the rear cavity 157 is close to the air outlet 172. The connecting part 141 extends into the front cavity 156 and is fixed to the connecting plate 158, so that the front cavity 156 and the cavity 143 partially overlap. The plasma generator 12 is installed on the connecting plate 158 and located in the front cavity 156, so that the plasma generator 12 can extend into the cavity 143, thus being close to the PCB board 13 and facilitating connection with the PCB board 13.

[0087] like Figure 15 and Figure 16 As shown, the connecting plate 158 is provided with a mounting groove 123 for mounting the plasma generator 12. The mounting groove 123 extends into the front cavity 156, and the connecting part 141 is provided with a clearance opening to avoid the mounting groove 123. The mounting groove 123 extends into the cavity 143. The mounting groove 123 is also provided with an elastic arm 124, which is an elastic buckle. The plasma generator 12 is fixed in place by the elastic buckle, making installation convenient and quick.

[0088] like Figure 12-14As shown, a mounting hole 126 is provided through the side wall of the overlapping portion of the connecting part 141 and the support member 151. A slot 125 is also provided on the outer wall of the support member 151, extending along the axial direction of the main body shell 11 to the end of the support member 151 near the air outlet 172. The slot 125 is connected to the mounting hole 126. The positive ion release end 121 and the negative ion release end 122 extend along the slot 125 to the end of the support member 151 near the air outlet 172. This allows the released positive and negative ions to quickly reach the air outlet 172 and be discharged onto the hair from the air outlet 172, thus reducing the loss of positive and negative ions in the main body shell 11. Furthermore, the mounting holes 126 and the slots 125 are spaced apart along the outer periphery of the support member 151 on its outer wall, so that the positive ion releasing end 121 and the negative ion releasing end 122 are spaced apart in the circumferential direction of the support member 151, thereby further reducing the loss between positive and negative ions and improving the care effect. In other embodiments, the slots 125 may also extend from the connecting portion 141 toward the end of the support member 151 near the air outlet 172 on both the connecting portion 141 and the outer wall of the support member 151, depending on the position of the mounting holes 126.

[0089] like Figure 12 As shown, the heater 15 also includes an inner tube 152 sleeved on the outer wall of the support 151. The inner wall of the inner tube 152 abuts against the top of the slot 125, thereby sealing the two slots 125 into two relatively independent spaces. The positive ion release end 121 and the negative ion release end 122 extend along the two relatively independent spaces to the end of the support 151 near the air outlet 172, which can improve the stability of the installation and ensure that the positive ion release end 121 and the negative ion release end 122 are always separated and will not shift due to bumps, drops, or other reasons in the usage environment. A fluid channel is formed between the inner tube 152 and the outer tube 153. The heating wire 155 is located in the fluid channel, and the positive ion release end 121 and the negative ion release end 122 extend into the fluid channel, thereby heating the airflow and releasing negative ions.

[0090] The implementation principle of this embodiment is as follows: the connecting part 141 of the air guide 14 and the support member 151 of the heater 15 are connected to form a central tube 173, and the plasma generator 12 is installed in the central tube 173; the PCB board 13 is set on the side of the air guide plate 144 away from the central tube 173, and a cavity 143 is provided to connect one side of the PCB board 13 and the central tube 173, so that the PCB board 13 can face the plasma generator 12, thereby facilitating installation and wiring. In addition, by extending the positive ion release end 121 and the negative ion release end 122 of the plasma generator 12 to the air outlet 172, the loss between positive and negative ions can be reduced, thereby improving the nursing effect. By providing a connecting plate 158 and a slot 125 on the support member 151 to install the plasma generator 12, the installation stability of the plasma generator 12 can be improved.

[0091] refer to Figure 1 and Figure 17-20 The handle 2 and the main body 1 define a fluid channel connecting an air inlet 171 and an air outlet 172. A fan assembly 25 is provided in the fluid channel. The fan assembly 25 draws outside air into the fluid channel from the air inlet 171 and then forms a high-speed airflow that is blown out from the air outlet 172. The fluid channel includes a first fluid channel 31 defined in the main body 1 and a second fluid channel 32 defined in the handle 2. The first fluid channel 31 and the second fluid channel 32 are interconnected.

[0092] Specifically, the main body 1 includes a main body shell 11, and a receiving cavity 111 is formed inside the main body shell 11. The first fluid channel 31 and functional components are disposed in the receiving cavity 111. A PCB board 13 and an air outlet 113 are respectively disposed at both ends along the axial direction of the main body 1 in the receiving cavity 111, and an air outlet 172 is disposed at the air outlet 113. An air inlet 112 is also disposed on the side wall of the main body shell 11, and the handle 2 is connected to the air inlet 112. The air inlet 112 is fluidly connected to the first fluid channel 31 and the second fluid channel 32. In this embodiment, the fan assembly 25 is disposed in the second fluid channel 32 on the handle 2, and the air inlet 171 is disposed at the end of the handle 2 away from the main body 1. Of course, the positions of the air inlet 171 and the fan assembly 25 can also be disposed at other positions on the main body 1 or the handle 2.

[0093] like Figures 17-19As shown, the handle 2 includes an inner handle housing 22 and an outer handle housing 21 sleeved outside the inner handle housing 22. The second fluid channel 32 is defined within the inner handle housing 22. The handle 2 is provided with a control button 264 for the user to operate the hair dryer. The control button 264 and functional components are electrically connected to the PCB board 13 in the main body 1 via wires, thereby forming the control circuit of the hair dryer. In this embodiment, the inner handle housing 22 is provided with a mounting platform 263 for mounting the control button 264. The mounting platform 263 and the control button 264 are located on the side of the inner handle housing 22 near the air outlet 113. The inner handle housing 22 is also provided with a wire inlet hole 262. The wire connects to the control button 264 and then passes through the wire inlet hole 262 into the inner handle housing 22 and the main body 1, thereby electrically connecting to the PCB board 13 in the main body 1. A first wire groove 224 is also provided on the outer wall of the inner shell 22 of the handle. The first wire groove 224 extends from the mounting platform 263 to the side of the inner shell 22 of the handle near the PCB board 13. The wire inlet hole 262 is provided on the side of the inner shell 22 of the handle near the PCB board 13. After the wire is connected to the control key 264, it can run along the first wire groove 224 on the outer wall of the inner shell 22 of the handle, and then reach the side near the PCB board 13. After passing through the wire inlet hole 262, it enters the inner shell 22 of the handle, and then enters the body 1 through the fluid channel to make an electrical connection with the PCB board 13.

[0094] By providing a first wire groove 224 on the outer wall of the inner shell 22 of the handle, the wires connecting the control key 264 and the PCB board 13 can be routed in the first wire groove 224, thus making the wiring more organized. Moreover, the wires running along the outer wall of the inner shell 22 of the handle can minimize the occupation of the fluid channel, the impact on the airflow path, and the generation of greater noise between the wires and the airflow. Furthermore, along the axial direction of the handle 2, it is preferable to position the wire inlet hole 262 closer to the hair dryer body 1 than the control key 264. This can extend the wire routing length outside the fluid channel and shorten the wire length inside the fluid channel, thereby further reducing the space occupied by the wires in the fluid channel.

[0095] In addition, in another embodiment not shown, the first wire groove 224 may also be provided on the inner wall of the handle housing 21, and the wire inlet hole 262 may be provided on the inner wall of the handle 2 or the air inlet end 112; in yet another embodiment not shown, the first wire groove 224 may also be provided on the inner wall of the handle inner housing 22, in which case the wire inlet hole 262 may be located on the side of the handle inner housing 22 or the air inlet end 112 near the air outlet end 113.

[0096] like Figure 19 and Figure 20As shown, the control key 264 includes at least an on / off switch for controlling the power switch and a mode key (not labeled) for controlling the function mode. The first wire groove 224 includes at least two first branch wire grooves 26, which allows wires at different locations to be routed separately, thus facilitating installation. This arrangement also eliminates the need for an excessively large wire groove on the surface of the handle inner shell 22, thereby increasing the strength of the handle 2. In this embodiment, two first branch wire grooves 26 are provided, and the two first branch wire grooves 26 extend along the outer wall of the handle inner shell 22 on both sides of the control key 264, facilitating the connection of wires to the terminals on the control key 264. Furthermore, the first wire groove 224 also includes reinforcing ribs 261 extending along the path of the first wire groove 224. The reinforcing ribs 261 can increase the strength of the handle 2; the reinforcing ribs 261 are constructed to separate the wires, that is, the reinforcing ribs 261 can divide the first wire groove 224 into two wiring areas, with wires routed in the two areas respectively. This not only makes the wiring clear and understandable but also avoids tangling between wires, thus facilitating maintenance. The width of the first groove 224 is not necessarily all the same, but is adapted to the diameter of the wire set therein. That is, during the design stage, the position and width of the first groove 224 on the inner shell 22 of the handle are set according to the position and diameter of the wire.

[0097] like Figure 19 and Figure 20 As shown, in this embodiment, along the axial direction of the handle 2, the inlet hole 262 is closer to the main body 1 than the control key 264. The first wire groove 224 connects the inlet hole 262 and the control key 264. The path of the first wire groove 224 between the inlet hole 262 and the control key 264 is smoothly transitioned, which can prevent bending and damage to the wire. Specifically, the first wire groove 224 can be set at an overall angle, or it can be set as follows: Figure 4 As shown, the first wire groove 224 extends roughly horizontally to the side of the handle 2 near the PCB board 13, and then extends axially along the handle 2 towards the inlet hole 262, with a chamfer at the junction of the two directions. A power cord for powering the hair dryer is also connected to the bottom of the handle 2. Along the axial direction of the handle 2, a second wire groove 225 is provided on the outer wall of the inner shell 22 of the handle below the mounting platform 263. The second wire groove 225 communicates with the mounting platform 263, allowing the wires in the power cord to run through the second wire groove 225 and connect to the control button 264 in the mounting platform 263. Furthermore, a third wire groove 226 is provided on the mounting platform 263 around the control button 264. The third wire groove 226 connects the second wire groove 225 and the first wire groove 224, making the wiring on the mounting platform 263 more organized.

[0098] The implementation principle of this embodiment is as follows: During installation, the wires are arranged along the second wire groove 225 and then connected to the third wire groove 226 on the mounting platform 263; the wires are electrically connected to the terminals of the control key 264, and then discharged along the third wire groove 226 into the first wire groove 224; the wires run along the first wire groove 224 to the side of the handle 2 near the PCB board 13 on the outer wall of the inner shell 22 of the handle, and then pass through the inlet hole 262 into the inside of the blower, finally connecting to the PCB board 13 inside the main body 1. By setting the third wire groove 226, the second wire groove 225 and the first wire groove 224, the wiring is clear and easy to inspect, and the wires do not excessively occupy the fluid channel, thus having little impact on the airflow path and reducing noise.

[0099] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A handheld hair dryer, comprising a main body and a handle connected to the main body, the main body comprising a main body shell having an air inlet end disposed thereon; the handle comprising a handle shell connected to the air inlet end, characterized in that, The air inlet includes a first connecting part and a second connecting part, which together form the air inlet. The handle housing includes a first housing and a second housing that are detachably connected. The end of the first housing extends into the air inlet and is engaged with the inner wall of the first connecting part. A first locking block is provided on the outer wall of the end portion, and a second locking block is provided on the inner wall of the first connecting portion. The first locking block and the second locking block lock the first housing onto the first connecting portion in the axial direction of the handle. The side wall of the end portion near the second housing abuts against the second housing or the air inlet end, so that the end portion rotates toward the center of the handle to lock the first locking block onto the second locking block. The second housing engages with the second connecting part, thereby preventing the first housing from rotating after the first housing is connected to the second housing; The second housing is disposed outside the second connecting portion; A positioning block is also provided on the air inlet end, the positioning block is located between the second housing and the first housing, and the second housing and the first housing abut against the positioning block.

2. The handheld hair dryer according to claim 1, characterized in that, The second housing is engaged with the outer wall of the second connecting part, a second engaging block is provided on the inner wall of the second housing, and a second engaging groove is provided on the outer wall of the second connecting part to engage with the second engaging block.

3. The handheld hair dryer according to claim 2, characterized in that, The second latching block and the second latching slot extend in a direction perpendicular to the handle axis.

4. The handheld hair dryer according to claim 1, characterized in that, The inner diameter of the first connecting part is larger than the inner diameter of the second connecting part.

5. The handheld hair dryer according to any one of claims 1-4, characterized in that, Point A is taken on the side wall near the second housing at the end and abutting against the second housing or the air inlet. The first housing rotates toward the center of the handle with point A as the fulcrum so that the end is engaged in the first connecting part. Along the axis of the handle, the first locking block is located diagonally above point A.

6. The handheld hair dryer according to claim 5, characterized in that, The end sidewall connecting point A and the first card block is arc-shaped at least at point A.

7. The handheld hair dryer according to claim 1, characterized in that, The first housing and the second housing are connected by snap-fit ​​and / or bolts to form the handle housing.

8. The handheld hair dryer according to claim 7, characterized in that, The handle housing is the inner handle housing, and the hair dryer also includes a handle outer housing fitted over the inner handle housing.

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