Hair care device

Abstract

The present application belongs to the technical field of small household appliances, and discloses a hair care device, which comprises a heating assembly, a first heating element comprising first and second electrode ports, a second heating element comprising third and fourth electrode ports, the second and fourth electrode ports being respectively connected to the positive and negative terminals of a power supply module, a temperature regulating element having first and second terminals, the first terminal being electrically connected to the first electrode port, and the second terminal being electrically connected to the third electrode port, the power supply module, the first and second heating elements and the temperature regulating element forming a loop, and the temperature regulating element being used for detecting the ambient temperature at the installation position thereof and regulating the on-off state of the loop according to the ambient temperature. The temperature regulating element at the air outlet position is connected to the heating element and / or the power supply module without the need for separately or additionally arranging a conductor, the size of the hair dryer is not increased due to the need for arranging the conductor, and the assembly is simple.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household small appliances, in particular to a hair care device. BACKGROUND

[0002] In daily life, after washing hair, a hair dryer is usually used to accelerate the drying of hair. In the existing common hair dryer, when arranging the heating wire, especially in the case of double-layer heating element, the heating wire is generally wound from the side close to the power supply to the side close to the air outlet, and then wound from the side close to the air outlet to the side close to the power supply, and then connected to the temperature control structure. Because the fuse in the temperature control structure is arranged at the position outside the heating wire and close to the air outlet, the fuse needs a conductive part to connect the heating wire and / or the power supply. The heating wire is not only conductive but also releases heat during the heating process, which makes it difficult to arrange the conductive part. The conductive part needs to be arranged at a distance far away from the outside of the heating wire, which further leads to a large structure of the hair dryer. SUMMARY

[0003] The present application provides a hair care device which can not only meet the wiring requirements but also ensure simple assembly and small size.

[0004] In order to achieve the above-mentioned purpose, the present application provides a hair care device, which comprises a whole machine body, a heating assembly, an air inlet, and an air outlet. The whole machine body comprises a heating cavity, and the heating assembly is arranged in the heating cavity. When the hair care device is running, the airflow entering from the air inlet flows to the air outlet through the heating assembly. The heating assembly comprises:

[0005] a support body;

[0006] a first heating element arranged on the support body, comprising a first electrode port close to the air outlet and a second electrode port close to the air inlet; and

[0007] a second heating element arranged on the support body, comprising a third electrode port close to the air outlet and a fourth electrode port close to the air inlet, the second electrode port and the fourth electrode port being respectively connected to the positive and negative terminals of a power supply module, the power supply module being arranged away from the air outlet; and

[0008] a temperature control element installed on the support body close to the air outlet, having a first terminal and a second terminal, the first terminal being electrically connected to the first electrode port, and the second terminal being electrically connected to the third electrode port, the power supply module, the first heating element, the second heating element, and the temperature control element forming a loop, the temperature control element being used to detect the ambient temperature at the installation position thereof and to control the on-off state of the loop according to the ambient temperature.

[0009] In one of the embodiments, the temperature regulating element comprises: a first temperature control device or a second temperature control device, the first terminal and the second terminal are two terminal ends of the first temperature control device or the second temperature control device;

[0010] The first temperature control device is configured to collect a first temperature around the first temperature control device, and when the first temperature is greater than a first preset temperature threshold, the first temperature control device is in an off state, so that the circuit is in an open state; the second temperature control device is configured to collect a second temperature around the second temperature control device, and when the second temperature is greater than a second preset temperature threshold, the second temperature control device is in an off state, so that the circuit is in an open state, and when the second temperature is less than or equal to the second preset temperature threshold, the second temperature control device is in an on state, so that the circuit is in a closed state.

[0011] In one of the embodiments, the temperature regulating element comprises: a first temperature control device and a second temperature control device, the first temperature control device and the second temperature control device are connected in series, and the first terminal and the second terminal are terminal ends of the first temperature control device and the second temperature control device connected with the first heat generating element and the second heat generating element;

[0012] The first temperature control device is configured to collect a first temperature around the first temperature control device, and when the first temperature is greater than a first preset temperature threshold, the first temperature control device is in an off state, so that the circuit is in an open state; the second temperature control device is configured to collect a second temperature around the second temperature control device, and when the second temperature is greater than a second preset temperature threshold, the second temperature control device is in an off state, so that the circuit is in an open state, and when the second temperature is less than or equal to the second preset temperature threshold, the second temperature control device is in an on state, so that the circuit is in a closed state.

[0013] In one of the embodiments, the first preset temperature threshold ranges from 199.6℃ to 200.4℃, and the second preset temperature threshold ranges from 150℃ to 160℃.

[0014] In one of the embodiments, a projection of a main body part of the temperature regulating element on the support body does not overlap with projections of the first heat generating element and the second heat generating element on the support body.

[0015] In one of the embodiments, the support body comprises:

[0016] a support body;

[0017] A plurality of support plates are fixed on the support body in a radial manner and at intervals, and the first heating element, the second heating element and the temperature regulating element are arranged on the plurality of support plates.

[0018] In one of the embodiments, the temperature regulating element is arranged along the circumference of the support body.

[0019] In one of the embodiments, the plurality of support plates comprises a plurality of first support plates and a plurality of second support plates, the plurality of first support plates and the plurality of second support plates are arranged alternately, and the first height of the plurality of first support plates is less than the second height of the plurality of second support plates.

[0020] The first heating element is a first layer of heating element arranged on the plurality of first support plates.

[0021] The second heating element is a second layer of heating element arranged on the plurality of second support plates.

[0022] In one of the embodiments, the plurality of first support plates and the plurality of second support plates extend along the length direction of the support body.

[0023] In one of the embodiments, a plurality of first notches are arranged on the plurality of first support plates, and the first heating element is arranged on the plurality of first notches in a spiral manner; a plurality of second notches are arranged on the plurality of second support plates, and the second heating element is arranged on the plurality of second notches in a spiral manner.

[0024] In one of the embodiments, a heat insulation element is arranged between the first heating element and the second heating element.

[0025] The hair care device provided by the present application divides the heating element into a first heating element and a second heating element, the two heating elements are independent, and a temperature regulating element is connected between the first heating element and the second heating element. In this way, by arranging two independent heating elements and connecting the temperature regulating element arranged near the air outlet between the two terminals of the two heating elements near the air outlet, the temperature regulating element arranged near the air outlet does not need to be connected to the heating element and / or the power supply module by a separate or additional conductor, and the conductor does not need to be arranged outside the heating wire, so that the temperature regulating element can be connected without increasing the size of the hair dryer, and the heating cavity does not need to reserve extra space for wiring, and the conductor does not interfere with the installation of the structure in the heating cavity, and the manufacturing and assembly are relatively simple. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The schematic diagram of the hair care device provided by the present application is shown in the drawings.

[0027] Figure 2 For Figure 1 A cross-sectional view of the hair care appliance provided in

[0028] Figure 3 For Figure 2 A partial cross-sectional view of the hair care appliance provided in

[0029] Figure 4 For Figure 3 A schematic view of the board holder of the hair care appliance provided in

[0030] Figure 5 For Figure 1 A partial exploded view of the hair care appliance provided in

[0031] Figure 6 For Figure 4 A cross-sectional view of the board holder provided in

[0032] Figure 7 For Figure 1 A partial schematic view of the hair care appliance provided in

[0033] Figure 8 For Figure 7 A partial schematic view of the hair care appliance provided in

[0034] Figure 9 For Figure 3 A partial enlarged view of B in

[0035] Figure 10 For Figure 3 A schematic view of the heating assembly of the hair care appliance provided in

[0036] Figure 11 , Figure 12 , Figure 13 For Figure 10 A partial schematic view of the heating assembly provided in

[0037] Figure 14 For Figure 1 A schematic view of a current loop of the hair care appliance provided in

[0038] Fig. 1 - head; 2 - tail; 10 - heating assembly; 20 - barrel; 21 - support body; 22 - outer barrel; 23 - heat insulation sheet; 31 - circuit board frame; 32 - wire control assembly; 40 - handle; 41 - air inlet channel; 42 - switch assembly; 43 - motor; 44 - air inlet; 91 - first sealing element; 92 - second sealing element; 93 - third sealing element; 201 - air outlet; 221 - slot; 222 - clamping arm; 311 - insertion strip; 312 - clamping protrusion; 313 - threading hole; 315 - air inlet; 316 - mounting hole; 321 - first layer plate; 322 - second layer plate; 323 - electrical element; 324 - heat dissipation element; 325 - circuit board; 1000 - whole machine body; 1001 - air supply channel; 2000 - whole machine shell; 2001 - touch assembly; 2003 - handle shell; 2004 - extended shell segment; 2005 - touch shell; 2006 - air duct shell; 2221 - clamping hole; 3001 - circuit cavity; 3002 - heating cavity; 3003 - heat insulation cavity; 3004 - mounting cavity; 3101 - first wall; 3102 - second wall; 3103 - recessed space; 9211 - threading hole; 60 - power supply module; 51 - first heating element; 511 - first electrode port; 512 - second electrode port; 52 - second heating element; 521 - third electrode port; 522 - fourth electrode port; 532 - support plate; 5321 - first support plate; 5322 - second support plate; 54 - temperature regulating element; 541 - first temperature control element; 542 - second temperature control element; 5401 - first terminal; 5402 - second terminal. DETAILED DESCRIPTION

[0039] The application will be further described below in conjunction with the drawings and examples. It should be understood that the specific examples described herein are intended to be illustrative only and are not in any way limiting of the application. Furthermore, it should be understood that in the description, only those parts relevant to the application are shown and described, and other parts are omitted.

[0040] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. "Under", "below" and "underneath" of a first feature to a second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0042] In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0043] In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0044] In the manufacturing of the heating assembly including the double-layer heating element, the two ends of the heating wire form two electrode ports of the heating wire, a first electrode port of the two electrode ports is wound from a first starting position, the first starting position is away from the air outlet, and the winding is performed to a first target position, the first target position is close to the air outlet and is away from the first starting position by a distance. At this time, the first layer of the heating wire is formed. The winding is continued from the first target position to a second starting position in an oblique upward direction, the second starting position is close to the air outlet, and the winding is performed from the second starting position to a terminal position in a direction away from the air outlet, to form the second layer of the heating wire. At this time, the winding of the double-layer heating element in the heating assembly is completed. At this time, the double-layer heating element is integrated, and a second electrode port of the two electrode ports of the heating wire is located at the terminal position. It can be seen that the first starting position and the terminal position are both located on the side away from the air outlet, and the first electrode port located at the first starting position and the second electrode port located at the terminal position are both located on the side away from the air outlet. The temperature control fuse needs to be arranged at a position close to the air outlet. In this way, the temperature control fuse cannot be directly electrically connected with the heating wire due to a certain distance between the temperature control fuse and any one of the two electrode ports of the heating wire, and the power supply module is also arranged on the side away from the air outlet. The temperature control fuse cannot be directly electrically connected with the power supply module due to a certain distance between the temperature control fuse and any one of the two electrode ports of the power supply module. Therefore, the temperature control fuse needs to be electrically connected with the heating wire and / or the power supply module through a conductive member (such as a wire or a metal strip) to form a loop of the temperature control fuse, the heating wire and the power supply module, and the conductive member needs to cross the outer side of the double-layer heating element to realize the electrical connection. The heating wire has a risk of short circuit due to the electrical conduction, and the heat generated by the heating wire during operation can damage the conductive member. The temperature control fuse, the temperature control device and other electrical components are arranged on the outer side of the heating wire. We usually think of arranging the conductive member on the outer side or the end side of the heating wire. At this time, the problem of damage to the conductive member is solved by increasing the gap (making the conductive member away from the outer side of the heating wire at a far distance). In addition, the conductive member is easy to be damaged, and a supporting structure needs to be arranged to prevent the conductive member from contacting the heating wire, which requires increasing the size of the whole machine and causes a problem of space waste. In order to reduce the size, a mica sheet is arranged between the outer side of the heating wire and the conductive member to reduce the size of the whole machine by using the heat insulation function of the mica sheet. However, the heat insulation capacity of the mica sheet is limited, and only a metal strip can be used. The metal strip still needs to be left with a certain gap between the metal strip and the heating wire, and the metal strip needs to be made into a specific shape to directly connect with each electronic component that needs to be connected in the circuit. The manufacturing and assembly are relatively complex.

[0045] In view of the above problems, the present application provides a heating assembly and a heating device. Figures 1 to 14As shown, the present application provides a hair care device mainly used for drying and styling hair, which comprises a whole body 1000, a circuit board frame 31, a wire control assembly 32 and a heating assembly 10. The hair care device has an air supply channel 1001, and the air supply channel 1001 is communicated with an air inlet 315 and an air outlet 201. The circuit board frame 31 is installed in the whole body 1000, and divides the whole body 1000 into a heating cavity 3002 and a circuit cavity 3001. The heating cavity 3002 is located on the air supply channel 1001, and the circuit cavity 3001 is isolated from the air supply channel 1001. The heating assembly 10 is installed in the heating cavity 3002, and the wire control assembly 32 is installed on the circuit board frame 31 and located in the circuit cavity 3001. The hair care device further comprises a power supply module 60 connected to the circuit board assembly 10. The two electrodes of the heating assembly 10 are connected to the power supply module 60 through the circuit board assembly 10, and the power supply module 60 is arranged away from the air outlet. Specifically, the power supply module 60 can be a battery pack, of course, the power supply module 60 can also be a plug. After the plug is connected with a power supply (for example, mains), a loop described in the present application is formed.

[0046] Specifically, by arranging the circuit board frame 31 in the whole body 1000, the whole body 1000 is divided into two parts of the heating cavity 3002 and the circuit cavity 3001, and the heating cavity 3002 is located on the side close to the air outlet 201. The heating assembly 10 is installed in the heating cavity 3002, and the heating cavity 3002 is arranged on the air supply channel 1001. The air flow sent through the air supply channel 1001 is heated by the heating assembly 10 and then sent out from the air outlet 201, so as to realize the hair drying operation. The wire control assembly 32 is arranged in the circuit cavity 3001, which is isolated from the heating cavity 3002, so as to ensure that the air flow in the heating cavity 3002 does not affect the wire control assembly 32.

[0047] As shown, Figure 10 , Figure 14As shown, the heat generating assembly comprises a support body, a first heat generating element 51, a second heat generating element 52 and a temperature regulating element 54. The first heat generating element 51 is arranged on the support body, and comprises a first electrode port 511 close to the air outlet and a second electrode port 512 close to the air inlet (i.e. the second electrode port 512 away from the air outlet). The second heat generating element 52 is arranged on the support body, and comprises a third electrode port 521 close to the air outlet and a fourth electrode port 522 close to the air inlet (i.e. the fourth electrode port 522 away from the air outlet). The second electrode port 512 and the fourth electrode port 522 are respectively connected to the positive and negative terminals of the power supply module 60. The temperature regulating element 54 is installed on the support body close to the air outlet, and has a first terminal 5401 and a second terminal 5402. The first terminal 5401 is electrically connected to the first electrode port 511, and the second terminal 5402 is electrically connected to the third electrode port 521. The power supply module 60 forms a loop with the first heat generating element 51, the second heat generating element 52 and the temperature regulating element 54. The temperature regulating element 54 is used to detect the ambient temperature at the installation position thereof, and regulate the on-off state of the above-mentioned loop according to the ambient temperature, i.e. regulate the working state of the first heat generating element 51 and the second heat generating element 52. The working state of the first heat generating element 51 and the second heat generating element 52 includes normal heating and stopping heating. When the loop is in the on state, the working state of the first heat generating element 51 and the second heat generating element 52 is normal heating; when the loop is in the off state, the working state of the first heat generating element 51 and the second heat generating element 52 is stopping heating. When the working state of the first heat generating element 51 and the second heat generating element 52 is normal heating, the first heat generating element 51 and the second heat generating element 52 heat according to the mode selected by the user; when the working state of the first heat generating element 51 and the second heat generating element 52 is stopping heating, the first heat generating element 51 and the second heat generating element 52 do not heat no matter what mode is selected by the user.

[0048] In existing hair care devices, the dual-layer heating element is a single unit, forming a whole in the circuit. The dual-layer heating element is connected to the temperature control element 54 and the power supply module 60. However, the hair care device provided by this invention divides the heating element into a first heating element 51 and a second heating element 52. These two heating elements are independent, and a temperature control element is connected between the first heating element 51 and the second heating element 52. Thus, by setting two independent heating elements and connecting the temperature control element 54, located near the air outlet, to the two terminals of the two heating elements near the air outlet, it is unnecessary to separately or additionally install a conductor to connect the temperature control element located at the air outlet to the heating element and / or the power supply module 60. Furthermore, it is unnecessary to place the conductor on the outside of the heating wire, thereby simplifying the manufacturing and assembly process without increasing the overall size of the hair dryer.

[0049] Specifically, the temperature control element 54 includes a main body and terminals. The orthographic projection of the main body of the temperature control element 54 onto the support does not overlap with the orthographic projections of the first heating element 51 and the second heating element 52 onto the support. This avoids the temperature control element 54 being affected by the first heating element 51 and the second heating element 52, thus improving the accuracy of the temperature control element 54.

[0050] In one embodiment of the present invention, the support body includes a support body 21 and a plurality of support plates 532. The plurality of support plates 532 are arranged in a radial pattern around the support body 21 and are fixed at intervals on the support body 21. A first heating element 51, a second heating element 52 and a temperature control element 54 are disposed on the plurality of support plates 532.

[0051] Specifically, the supporting body 21 is cylindrical.

[0052] like Figure 10 , Figure 12 As shown, the plurality of support plates 532 include a plurality of first support plates 5321 and a plurality of second support plates 5322, which are staggered. The first height of the plurality of first support plates 5321 is less than the second height of the plurality of second support plates 5322. The first heating element 51 is a first layer of heating element wound around the plurality of first support plates 5321. The second heating element 52 is a second layer of heating element wound around the plurality of second support plates 5322. In other words, the second heating element 52 is sleeved on the outside of the first heating element 51. The plurality of support plates 532 include a plurality of first support plates 5321 and a plurality of second support plates 5322. The distance from the support portion on the plurality of second support plates 5322 to the support body 21 is greater than the distance from the support portion on the plurality of first support plates 5321 to the support body 21.

[0053] The plurality of first support plates 5321 and the plurality of second support plates 5322 extend along the radial direction of the support body 21.

[0054] The plurality of first support plates 5321 are provided with a plurality of first notches, and the first heating element 51 is arranged in a spiral shape around the plurality of first notches; the plurality of second support plates 5322 are provided with a plurality of second notches, and the second heating element 52 is arranged in a spiral shape around the plurality of second notches.

[0055] The first heating element 51 and the second heating element 52 are provided with a heat insulation member. The plurality of first support plates 5321 are arranged inside the heat insulation member. Further, the heat insulation member is fixed on the second support plate 5322.

[0056] As shown in Figure 12 , Figure 13 , Figure 10 , preferably, the temperature regulating element 54 is arranged along the circumferential direction of the support body 21. In this way, the overall size of the hair care device can be reduced.

[0057] In an embodiment of the present application, the temperature regulating element 54 comprises a first temperature control 541 and a second temperature control 542, the first temperature control 541 and the second temperature control 542 are connected in series, and the first terminal 5401 and the second terminal 5402 are terminals of the first temperature control 541 and the second temperature control 542 that are connected to the first heating element 51 and the second heating element 52. As shown in Figure 12 , Figure 13 , Figure 10 , the temperature regulating element 54 comprises a first temperature control 541 and a second temperature control 542.

[0058] The first temperature control 541 is configured to collect a first temperature on the periphery of the first temperature control 541, and when the first temperature is greater than a first preset temperature threshold, the first temperature control 541 is in an open state, so that the circuit is in an open state; the second temperature control 542 is configured to collect a second temperature on the periphery of the second temperature control 542, and when the second temperature is greater than a second preset temperature threshold, the second temperature control 542 is in an open state, so that the circuit is in an open state; when the second temperature is less than or equal to the second preset temperature threshold, the second temperature control 542 is in a closed state, so that the circuit is in a closed state.

[0059] Specifically, the first temperature control 541 is a temperature control fuse, and the second temperature control 542 is a temperature controller.

[0060] In a specific embodiment, the first preset temperature threshold is 199.6-200.4°C, for example, the first preset temperature threshold is 199.6°C, 200°C, 200.4°C, etc. The first preset temperature threshold is higher than the second preset temperature threshold, and the first preset temperature threshold is the critical temperature for use of the hair care device. If the first preset temperature threshold is exceeded, the heating assembly of the hair care device cannot work. The second preset temperature threshold is in the range of 150-160°C. This temperature range setting meets the requirement of having sufficient dry hair working temperature for the hair care device while also having a safe use temperature. For example, the second preset temperature is 150°C, 156°C, 160°C, etc. In fact, the difference between the first preset temperature threshold and the second preset temperature threshold is about 60°C, which meets the working requirement while preventing the heating assembly from being suddenly disconnected.

[0061] The first temperature control 541, the second temperature control 542, the first heating element 51, the second heating element 52, and the power supply module 60 are connected in series. Under the action of the second temperature control 542, the first heating element 51 and the second heating element 52 are disconnected from the power supply module 60. When the second temperature is lower than the second preset temperature threshold, the connection can be restored to continue use. When the first temperature detected by the first temperature control 541 reaches the first preset temperature threshold, the disconnection of the first heating element 51, the second heating element 52, and the power supply module 60 is not recoverable. At the same time, the first temperature control 541 usually starts to work after the second temperature control 542 fails. The first temperature control 541 is arranged at the air outlet because the air at the air outlet is heated by the first heating element 51 and the second heating element 52 to the highest temperature. In this way, through the double protection of the two temperature controls, the use safety of the hair care device is improved.

[0062] In another embodiment of the present application, the temperature control element 54 includes: the first temperature control 541 or the second temperature control 542, and the first terminal 5401 and the second terminal 5402 are two terminals of the first temperature control 541 or the second temperature control 542.

[0063] The following will be described in combination with Figures 10 to 13 A manufacturing process of the heating assembly of the present application will be described below. In manufacturing the first layer of heating wires, a plurality of first support plates 5321 are arranged on the support body 21, the heating wires are wound on the plurality of first support plates 5321 from a first starting position close to the air inlet, the second electrode port 512 is arranged at the first starting position, and the winding is continued to a first target position close to the air outlet, and the first target position is the first electrode port 511. From this point, the manufacturing of the first layer of heating wires is completed, and the manufactured heating assembly is as shown in Figure 11The first support plate 5321 where the first target position is located is called support plate A, and a plurality of second support plates 5322 are installed on the support body 21, and the second support plate 5322 adjacent to the support plate A along the winding direction is called support plate B. The conductive wire is connected to the second starting position obliquely upward from the first target position, and the second starting position is located on the support plate B and close to the air outlet. Then, the terminal 5401 on the second temperature control 542 which is not connected with the first temperature control 541 is installed on the support plate B, and the terminal 5402 on the first temperature control 541 which is not connected with the second temperature control 542 is installed on the second support plate 5322 (called support plate C) closest to the position where the terminal 5402 is located. From this, the heating assembly made is as shown in Figure 12 、 Figure 13 Then, the third electrode port 521 of the other heating wire is connected with the terminal 5402 on the first temperature control 541 which is not connected with the second temperature control 542, and starts to be wound in a direction away from the air outlet to the second target position, and the fourth electrode port 522 of the other heating wire is located at the second target position. From this, the winding of the second layer of heating wire is completed, and the heating assembly made is as shown in Figure 10 In fact, the manufacturing process of the heating assembly is not limited to the manufacturing process described in this paragraph, as long as the above-mentioned circuit connection and the position setting of each element can be met.

[0064] In the present application, by setting the distances of the first wall 3101 and the second wall 3102 from the heating assembly 10 respectively, the airflow sent into the air supply channel 1001 can change the flow direction with the difference between the first wall 3101 and the second wall 3102. Because the first wall 3101 is closer to the air outlet of the air supply channel 1001 than the second wall 3102, the connection between the two is actually the main area that changes the air direction. The airflow entering through the air inlet 315 of the air supply channel 1001 flows along the position close to the first wall 3101 to the junction of the first wall 3101 and the second wall 3102, and changes direction due to the limitation of the side wall at the junction to flow along the second wall 3102 and to the air outlet through the heating assembly 10. At the same time, because the change of the airflow direction will cause the loss of wind power, the second wall 3102 is set to be closer to the heating assembly 10 than the first wall 3101, so that the flow cross section between the second wall 3102 and the heating assembly 10 is reduced, thereby increasing the airflow velocity to meet the requirement of blowing out from the air outlet as efficiently as possible, and at the same time, the airflow is prevented from flowing towards the side of the circuit cavity 3001 by changing the flow direction.

[0065] That is, through the above arrangement, on the basis of meeting the complete isolation of the circuit cavity 3001 relative to the heating cavity 3002, the wire control assembly 32 installed in the circuit cavity 3001 is actually isolated relative to the air supply channel 1001 in communication with the heating cavity 3002, so that the hot air flow passing through the heating cavity 3002 does not affect the wire control assembly 32 in the circuit cavity 3001 (for example, causing the wire control assembly 32 to overheat or other thermal effects), and the wire control assembly 32 also does not affect the hot air flow in the heating cavity 3002 (for example, does not cause the flow of the hot air flow to be turbulent). At the same time, it is because the first wall 3101 and the second wall 3102 change the wind direction and adjust the flow rate, reducing the possibility of the hot air flow flowing towards the circuit cavity 3001 side, thereby improving the drying effect while further reducing the influence of the wire control assembly 32 on the hot air flow in the air supply channel 1001.

[0066] In some embodiments, a wire passing hole 313 is configured at a position corresponding to the first wall 3101 on the circuit board frame 31, and a first sealing member 91 is arranged at the wire passing hole 313, and the wires of the heating assembly 10 are connected to the wire control assembly 32 through the first sealing member 91. Specifically, the wires on the heating assembly 10 in the heating cavity 3002 pass through the wire passing hole 313 on the circuit board frame 31 and are connected to the wire control assembly 32. Moreover, it is because of the arrangement of the first sealing member 91 at the wire passing hole 313 that the sealing of the wire routing is ensured, further enhancing the sealing between the heating cavity 3002 and the circuit cavity 3001. At the same time, the wire passing hole 313 is arranged at the first wall 3101 on the circuit board frame 31, reducing the interference between the wires and the electrical elements 323 in the circuit board 325. Of course, such an arrangement also facilitates the structure of the wire passing hole 313 itself and the installation of the first sealing member 91 at the wire passing hole 313. In a specific embodiment, the first sealing member 91 is a wire plug, which has a wire passing hole 9211 for the wires to pass through. The outer wall of the wire plug is pressed against the hole wall of the wire passing hole 313, and the hole wall of the wire passing hole 9211 is pressed against the outer wall of the wires, thereby achieving sealed connection at the wire routing and reducing the leakage of the air volume in the air supply channel 1001. The wire plug is made of rubber or silicone material.

[0067] As shown in Figure 3 and Figure 5 In some embodiments, the circuit board frame 31 is configured with a mounting hole 316 extending through the thickness direction thereof. The wire control assembly 32 includes a circuit board 325 and a heat sink 324 mounted on the side of the circuit board 325 facing the heating cavity 3002, and the heat sink 324 protrudes from the circuit board 325 and is partially embedded in the mounting hole 316.

[0068] Specifically, the installation hole 316 is arranged to facilitate the heat dissipation member 324 to pass through the circuit board frame 31 to contact the cold air flow in the air supply channel 1001, so as to transfer the heat generated by the circuit board 325 during operation to the air supply channel 1001, and on the basis of meeting the temperature rise of the cold air flow in the air supply channel 1001, the heat dissipation of the circuit board 325 is realized. Moreover, the arrangement of the heat dissipation member 324 only allows the heat to flow to the side with lower temperature, i.e. one-way flow heat dissipation, so as to meet the requirement that only the heat of the circuit board 325 is transferred to the cold air flow in the air supply channel 1001 through the heat dissipation member 324. In a specific embodiment, the sealed connection of the heat dissipation member 324 relative to the circuit board frame 31 improves the sealing of the air supply channel 1001, reduces the leakage amount of the air flow towards the circuit cavity 3001, and improves the isolation of the line control assembly 32 relative to the air supply channel 1001. In another specific embodiment, the heat dissipation member 324 is in the form of an arc-shaped heat dissipation fin extending circumferentially along the entire machine body 1000. Such an arrangement improves the contact area between the heat dissipation member 324 and the cold air flow in the air supply channel 1001, thereby improving the heat dissipation effect. In still another specific embodiment, the circuit board 325 is connected with a screw, and the circuit board frame 31 is provided with a screw hole, and the screw is screwed into the screw hole to realize the installation of the circuit board 325 relative to the circuit board frame 31.

[0069] As shown in Figure 3 and Figure 5 , in some embodiments, the side of the heat dissipation member 324 facing the heating cavity 3002 is flush with the side of the installation hole 316 facing the heating cavity 3002. Such an arrangement facilitates the air flow entering the air supply channel 1001 to more easily contact the heat dissipation surface of the heat dissipation member 324, thereby removing the heat of the heat dissipation member 324 and meeting the heat dissipation requirement. In other embodiments, the depth of the heat dissipation member 324 extending into the installation hole 316 is less than the depth of the installation hole 316 itself, i.e. the installation of the heat dissipation member 324 relative to the installation hole 316 has an installation allowance in the depth direction, and the installation allowance is between 0.8mm-2mm, for example, it can be 0.8mm, 1.2mm, 1.8mm, 2mm, etc. The arrangement of the installation allowance facilitates the assembly of heat dissipation members 324 with different thicknesses.

[0070] As shown in Figure 3 and Figure 7As shown in the drawings, in some embodiments, the circuit board 325 comprises a first layer board 321 and a second layer board 322 stacked along the axial direction of the whole machine body 1000, and the electrical components 323 are arranged on the first layer board 321 and the second layer board 322, and the first layer board 321 and the second layer board 322 have a height difference along the axial direction of the whole machine body 1000, and the heat dissipation member 324 is arranged on one of the first layer board 321 and the second layer board 322 close to the side of the circuit board frame 31. That is, the circuit board 325 adopts a double-layer board structure, and the electrical components 323 can be distributed on the first layer board 321 and the second layer board 322 according to design requirements or the convenience of structural layout, thereby simplifying the overall design difficulty of the circuit board 325. In particular, compared with a single-layer circuit board 325, the arrangement of the double-layer board can increase the installation space of the electrical components 323 and reduce the load of the single-layer board. At the same time, it is because that the first layer board 321 and the second layer board 322 are stacked along the axial direction of the whole machine body 1000, thereby effectively reducing the diameter of the circuit board 325, and further reducing the radial size of the whole machine body 1000. In addition, the arrangement of the height difference between the two layer boards, that is, there is a gap between the first layer board 321 and the second layer board 322, facilitates the installation of the electrical components 323, thereby reducing the interference between the electrical components 323 on each layer board. Moreover, the arrangement of the first layer board 321 and the second layer board 322 relative to the heat dissipation member 324 not only meets the installation of the heat dissipation member 324 relative to the circuit board 325, but also ensures that the heat dissipation member 324 can be in contact with the cold air flow in the air supply channel 1001, thereby achieving heat dissipation.

[0071] As shown in the drawings, Figure 3 and Figure 7 In a specific embodiment, the second layer board 322 is located close to the side of the circuit board frame 31, and the radial size of the second layer board 322 along the whole machine body 1000 is smaller than the radial size of the first layer board 321 along the whole machine body 1000. The heat dissipation member 324 is arranged on the second layer board 322. In other words, the separate layout of the second layer board 322 and the second layer board 322 not only facilitates the assembly planning of the electrical components 323, but also can arrange the more important components in the electrical components 323 on the first layer board 321 to improve the protection. In a specific embodiment, the first layer board 321 adopts a circular plate to adapt to the cylindrical structure of the whole machine body 1000 as much as possible. The second layer board 322 adopts a special-shaped plate to facilitate the adaptation with the electrical components 323 and the circuit board frame 31, and improve the assembly convenience. Among them, the first layer board 321 and the second layer board 322 are fixed by a connecting column, or directly fixed into an integral structure by screws. Then, it can be installed relative to the circuit board frame 31.

[0072] As shown in the drawings, Figure 3 and Figure 6As shown in the figure, in one embodiment, the surface of the first wall 3101 is flat, and the surface of the second wall 3102 is curved. Such an arrangement not only allows the air flow to enter the air supply channel 1001 smoothly, but also reduces wind loss. Moreover, the curved surface makes the contact with the air flow more smooth, so as to facilitate the change of the air flow direction, and further reduce the wind loss. In other embodiments, the first wall 3101 and the second wall 3102 are both curved, or the first wall 3101 is curved and the second wall 3102 is flat. Meanwhile, in another embodiment, the connection between the first wall 3101 and the second wall 3102 is transitioned by a curved surface. The transition direction of the curved surface can weaken the stress concentration phenomenon at the connection, and at the same time improve the smoothness of the air flow.

[0073] As shown in the figure, Figure 3 and Figure 6 In some embodiments, the projection area of the second wall 3102 on the plane of the air outlet 201 side accounts for 45%-49% of the projection area of the circuit board frame 31 on the plane of the air outlet 201 side. Such an arrangement makes the area of the second wall 3102 smaller than the area of the first wall 3101, so as to prevent the air duct at the second wall 3102 in the air supply channel 1001 from being too small to cause the air flow rate to be too large, thereby improving the protection of the heat generating component 10. Of course, the limitation of the area of the second wall 3102 facilitates the arrangement of the threading hole 313 relative to the circuit board frame 31. In one embodiment, the above projection area accounts for 45%, 46.5%, 48.2%, 49%, etc. In another embodiment, the second wall 3102 is located at the edge of the threading hole 313 by about 2mm-3mm, for example, 2mm, 2.5mm or 3mm, etc.

[0074] As shown in the figure, Figure 3 and Figure 6 In some embodiments, the maximum distance difference between the second wall 3102 and the first wall 3101 relative to the air outlet 201 is between 0.6cm and 1.3cm. Here, the difference refers to the spacing of the first wall 3101 and the second wall 3102 in the axial direction of the whole machine body 1000. Specifically, as mentioned above, the second wall 3102 is closer to the side of the air outlet 201 facing the air supply channel 1001 than the first wall 3101, and the spacing between the first wall 3101 and the second wall 3102 actually affects the length of the air duct after the cross-sectional area is changed. The purpose is to achieve the change of the air direction while reducing the wind loss as much as possible, and to increase the wind speed. In one embodiment, the above axial difference is 0.6cm, 0.86cm, 1cm or 1.3cm.

[0075] As shown in the figure, Figure 3 and Figure 6As shown, in some embodiments, the connection between the first wall 3101 and the second wall 3102 causes at least a portion of the airflow direction to change by 60-90 degrees. Specifically, as mentioned above, the airflow flowing near the first wall 3101 is restricted by the sidewall at the junction of the first wall 3101 and the second wall 3102, thus changing its direction. Therefore, limiting the angle of the change in airflow direction is equivalent to limiting the angle of the sidewall at the junction of the first wall 3101 and the second wall 3102, that is, limiting the angle of the sidewall at the junction relative to the first wall 3101, and further determining the angular relationship between the first wall 3101 and the air outlet side. For example, when the airflow direction changes by 90 degrees, the sidewall at the junction is perpendicular to the first wall 3101. At this time, the first wall 3101 is parallel to the air outlet side, therefore, only when the airflow direction has a 90-degree bend can it flow smoothly to the air outlet. When the wind direction changes by 60 degrees, the first wall 3101 has a 60-degree angle relative to the air outlet. Of course, the angle of change in the flow direction can also be 75 degrees, 85 degrees, etc. In fact, the greater the change in flow direction, the easier it is to design the circuit board frame 31 for the position of the first wall 3101 relative to the air outlet, thus making the hair care device easier to design and manufacture.

[0076] like Figure 3 and Figure 6 As shown, in some embodiments, the second wall 3102 causes at least a portion of the airflow direction to change by 45 to 90 degrees. Specifically, the curved structure of the second wall 3102 can adjust the airflow direction along the second wall 3102, changing it towards the air outlet. Therefore, the change in airflow direction caused by the second wall 3102 is related to the position of the second wall 3102 relative to the air outlet. Naturally, a larger angle of change in airflow direction via the second wall 3102 facilitates the design of the entire circuit board frame 31. In a specific embodiment, the angle of change in airflow direction caused by the second wall 3102 is 45 degrees, 80 degrees, or 90 degrees.

[0077] like Figures 3-7As shown, in some embodiments, the circuit board frame 31 has a recessed space 3103 on the side facing the circuit cavity 3001 at the location of the second wall 3102. The recessed space 3103 is used to accommodate part of the wired control assembly 32. The through hole 313 is located on the circuit board frame 31 at the location corresponding to the first wall 3101. Specifically, the side of the circuit board frame 31 facing the heating cavity 3002 has an open cylindrical cavity. This cylindrical cavity surrounds a portion of the air supply channel 1001. The first wall 3101, the second wall 3102, and the recessed space 3103 are all located at the bottom of this cylindrical cavity. The recessed space 3103 on the side of the circuit board frame 31 facing the circuit cavity 3001 allows components with larger axial dimensions along the entire body 1000 on the circuit board 325 side to be arranged within the recessed space 3103, improving the adaptability of the circuit board 325 arrangement. The wire hole 313 is located on the first wall 3101 at the bottom of the cylindrical cavity and extends through the first wall 3101, facilitating the connection of the wire to the wire control assembly 32 in the isolated circuit cavity 3001. This arrangement also facilitates the construction of the wire hole 313 itself and the installation of the first seal 91 at the wire hole 313. In a specific embodiment, the size of the recessed space 3103 is related to the axial difference between the second wall 3102 and the first wall 3101, to satisfy airflow guidance while maximizing the installation of electrical components 323.

[0078] like Figure 2 As shown, in some embodiments, the main body 1000 further includes a touch component 2001 installed on the side of the wired control component 32 away from the air outlet 201. A circuit cavity 3001 is disposed between the circuit board frame 31 and the touch component 2001, and the touch component 2001 is electrically connected to the wired control component 32. Specifically, the touch component 2001 is used for user manual control of the hair care device, such as controlling the power level. The touch component 2001 is positioned away from the air outlet to reduce interference with the airflow. In fact, when the touch component 2001 is working, it also generates slight heat due to its own touch circuitry. When the circuit cavity 3001 is positioned between the touch component 2001 and the circuit board frame 31, it isolates the air outlet 1001 from the touch component 2001 while ensuring isolation between the wired control component 32 and the air supply channel 1001.

[0079] like Figure 2As shown in the drawings, in one specific embodiment, the touch assembly 2001 is configured with a touch housing 2005, which is buckled on the end of the whole machine shell 2000 away from the air outlet 201, and the touch housing 2005 is sealingly connected with the whole machine shell 2000. Specifically, the whole machine shell 2000 here is wrapped outside the whole machine body 1000, playing a protective role for the whole machine body 1000. The assembly of the touch housing 2005 and the whole machine shell 2000 improves the compactness of the overall installation structure of the whole machine body 1000. At the same time, the sealing connection of the touch housing 2005 and the whole machine shell 2000 meets the sealing requirements of the entire hair care device itself, and also ensures that the circuit cavity 3001 is in a sealed state to prevent impurities in the external environment from entering the circuit cavity 3001 and damaging the electrical components 323. Among them, an annular sealing ring is arranged between the touch housing 2005 and the whole machine shell 2000 to achieve sealing connection.

[0080] As shown in the drawings, Figure 2 and Figure 3 In some embodiments, the whole machine shell 2000 and the whole machine body 1000 have a heat insulation cavity 3003 around the periphery of the whole machine body 1000, and the heat insulation cavity 3003 at least partially overlaps the heating cavity 3002 along the axial direction of the whole machine body 1000. Specifically, through the arrangement of the heat insulation cavity 3003, the whole machine shell 2000 and the whole machine body 1000 do not directly contact and thus do not directly conduct heat. At the same time, because the main heat source of the hair care device comes from the heating assembly 10, the relative position relationship between the heat insulation cavity 3003 and the heating assembly 10 makes the heat insulation cavity 3003 be arranged around the periphery of the heating assembly 10 to directly act on the heat generated by the heating assembly 10 in the most direct way, thereby effectively reducing the heat loss in the air supply channel 1001, so that the heat in the air supply channel 1001 is used as much as possible or almost completely for actual hair drying operation, thereby improving the actual use of effective heat of the hair care device and improving the hair drying effect. Moreover, it is because of the arrangement of the heat insulation cavity 3003 that the heat generated by the heating assembly 10 does not directly conduct to the whole machine shell 2000, thereby reducing the risk of overheating of the whole machine shell 2000 and improving the safety of use.

[0081] As shown in the drawings, Figure 2 and Figure 3 In one specific embodiment, the heat insulation cavity 3003 is arranged in an annular shape along the axial direction of the whole machine body 1000, and the heat insulation cavity 3003 is wrapped outside the heating cavity 3002. Such an arrangement makes the heating assembly 10 have heat insulation cavities 3003 distributed along the circumferential direction of the heating assembly 10, thereby improving the heat insulation area and strengthening the effect of preventing heat loss. In other embodiments, the heat insulation cavity 3003 is arranged in an arc shape, and there are a plurality of heat insulation cavities 3003 arranged at intervals around the periphery of the heating assembly 10.

[0082] As shown in the drawings, Figure 2And Figure 3 As shown in some embodiments, the heat insulation cavity 3003 has a radial width of 0.5-2mm along the whole machine body 1000. By limiting the size of the radial width of the heat insulation cavity 3003, a safe heat insulation distance between the whole machine body 1000 and the whole machine shell 2000 is ensured, i.e. while reducing heat loss, the hair care device has a small size along the radial direction of the whole machine body 1000, and the stability of the assembly of the whole machine body 1000 relative to the whole machine shell 2000 is improved. The radial width of the heat insulation cavity 3003 is 0.5mm, 0.7mm, 1mm, 1.5mm or 2mm.

[0083] As shown in some embodiments, the heat insulation cavity 3003 is arranged between the whole machine body 1000 and the whole machine shell 2000. Figure 2 And Figure 3 As shown in some embodiments, the whole machine body 1000 further comprises a barrel 20 extending along the axis of the air supply channel 1001, the barrel 20 is sealingly connected to the circuit board frame 31 away from the air outlet 201, and the barrel 20 and the circuit board frame 31 jointly define the air supply channel 1001. The air outlet 201 is arranged on the side of the barrel 20 away from the circuit board frame 31, and the air inlet 315 is arranged on the side of the circuit board frame 31 close to the first wall 3101. The heat insulation cavity 3003 is arranged at least between the barrel 20 and the whole machine shell 2000.

[0084] Specifically, the heating cavity 3002 is the barrel cavity of the barrel 20, the heating assembly 10 is installed in the barrel cavity, and the barrel 20 and the circuit board frame 31 jointly define the air supply channel 1001, so that the airflow heated by the heating assembly 10 is sent out from the air outlet 201 for drying hair. At the same time, the sealing connection between the barrel 20 and the circuit board frame 31 improves the sealing performance of the air supply channel 1001 and reduces the leakage of the airflow in the air supply channel 1001. When the heat insulation cavity 3003 is arranged between the barrel 20 and the whole machine shell 2000, it is wrapped around the outside of the heating cavity 3002, thereby reducing the heat loss in the heating cavity 3002. When the heat insulation cavity 3003 is arranged between the barrel 20, the side of the circuit board frame 31 and the whole machine shell 2000, the heat loss in the heating cavity 3002 is reduced while the air leakage in the air supply channel 1001 is reduced.

[0085] As shown in some embodiments, the heat insulation cavity 3003 is arranged between the whole machine body 1000 and the whole machine shell 2000. Figure 2 And Figure 3As shown, in some embodiments, the heat insulation cavity 3003 is in communication with the circuit cavity 3001 described above. At this time, a gap is reserved between the whole machine shell 2000 and the circuit board frame 31, which also serves as a part of the heat insulation cavity 3003, so that the heat insulation cavity 3003 surrounds the peripheral side of the cylinder body 20 and the circuit board frame 31. Among them, the gap between the whole machine shell 2000 and the circuit board frame 31 is smaller than the gap between the whole machine shell 2000 and the cylinder body 20. In other embodiments, the heat insulation cavity 3003 is not in communication with the circuit cavity 3001 described above, and the peripheral side of the whole machine shell 2000 and the circuit board frame 31 does not have a gap.

[0086] As Figure 2 , Figure 3 and Figure 8As shown, in some embodiments, the barrel 20 comprises a support body 21 and an outer barrel 22 sleeved outside the support body 21, the heating assembly 10 is arranged between the support body 21 and the outer barrel 22, and the end of the outer barrel 22 away from the air outlet 201 is sealingly connected to the circuit board frame 31 through the second sealing member 92. The heat insulation cavity 3003 is arranged between the outer barrel 22 and the whole machine shell 2000, and at least the inner wall of the outer barrel 22 towards the heating assembly 10 is provided with a heat insulation sheet 23. Specifically, the heating cavity 3002 is located between the outer wall of the support body 21 and the inner wall of the outer barrel 22, and the heating assembly 10 is installed in the heating cavity 3002, so as to realize the support of the heating assembly 10 through the common constraint of the support body 21 and the outer barrel 22. The outer barrel 22 is not only used for cooperation with the circuit board frame 31, but also used for protection of the heating assembly 10 and the support body 21. At the same time, the outer barrel 22 can be clamped and matched with the whole machine shell 2000 sleeved outside. For example, a plurality of circumferentially spaced limiting ribs are arranged on the outer wall of the whole machine shell 2000, and the limiting ribs are clamped on the outer barrel 22. Of course, the fixing of the outer barrel 22 and the whole machine shell 2000 can be realized by the cooperation of the clamping arms and the clamping grooves. Moreover, the circuit board frame 31 can be axially fixed between the arc-shaped structure outside itself and the whole machine shell 2000, and axially fixed with the touch shell 2005 installed on the rear side, so as to realize the assembly of the whole hair care device head 1 and improve the compactness. The arrangement of the heat insulation sheet 23 on the outer barrel 22 reduces the heat of the heating assembly 10 directly transmitted to the outer barrel 22. In other embodiments, the heat insulation sheet 23 is arranged around the outer wall of the support body 21, so as to reduce the heat of the heating assembly 10 transmitted to the support body 21. At the same time, the arrangement of the second sealing member 92 between the outer barrel 22 and the circuit board frame 31 improves the sealing performance of the air supply channel 1001 and reduces the air leakage. In a specific embodiment, the heat insulation sheet 23 is a mica sheet. In another specific embodiment, the heat insulation sheet 23 is arranged around the outer barrel 22 along the axial direction of the outer barrel 22. That is, the heat insulation sheet 23 is arranged around the outer barrel 22 along the circumferential direction of the outer barrel 22, so that the heating assembly 10 has a heat insulation effect with the outer barrel 22 at each position along the circumferential direction, and the effect of preventing heat loss is strengthened.

[0087] As Figure 2 , Figure 3 , Figure 5 , Figure 7 and Figure 8As shown, in still another specific embodiment, the second sealing member 92 is a sealing ring. The outer cylinder 22 is provided with a slot 221 at one end away from the air outlet 201 of the air supply passage 1001, and the second sealing member 92 is accommodated in the slot 221. The one end of the circuit board frame 31 towards the air outlet 201 is provided with a plug 311, which is plugged into the slot 221 and pressed against the second sealing member 92. Further, the outer wall of the outer cylinder 22 is provided with a clamping arm 222 extending axially, which is configured with a clamping hole 2221. Correspondingly, the outer wall of the circuit board frame 31 is provided with a clamping protrusion 312 protruding radially outward, which can be clamped into the clamping hole 2221, further improving the connection reliability of the outer cylinder 22 and the circuit board frame 31. The number of clamping arms 222 corresponds to the number of clamping protrusions 312, improving the stress balance.

[0088] As shown in some embodiments, Figure 2 and Figure 3 As shown, in some embodiments, the hair care device further comprises a handle 40 connected to the main body 1000 and a switch assembly 42 mounted on the handle 40, the handle 40 is configured with an air inlet passage 41 communicating with the air inlet 315 of the air supply passage 1001 and a mounting cavity 3004 isolated from the air inlet passage 41, the switch assembly 42 is at least partially assembled in the mounting cavity 3004, and the switch assembly 42 is electrically connected with the wire control assembly 32. The handle 40 is sealingly connected with the main body 1000.

[0089] Specifically, the handle 40 is provided for the user to hold for drying operation. The switch assembly 42 is provided for the user to control the start and stop of the hair care device, and cooperates with the touch assembly 2001 to adjust the wind power after starting and the use state of hot and cold air. The handle 40 is provided with an air inlet passage 41, and the air inlet passage 41 has an air inlet 44 provided on the handle 40. The handle 40 is provided with a motor 43, and the motor 43 is electrically connected with the circuit board 325 through wires. The switch assembly 42 controls the motor 43 to drive through the circuit board 325. The airflow in the external environment enters the air inlet 44 on the handle 40 under the suction power of the hair care device, is transported to the air supply passage 1001 on the main body 1000 along the air inlet passage 41, and is then sent out from the air outlet 201 of the air supply passage 1001 for drying. Of course, in use, the heating assembly 10 does not necessarily have to work, and only the airflow in the external environment is converted into high-speed airflow through the air supply passage 1001. The use of the heating assembly 10 can be controlled by the touch assembly 2001. At the position on the handle 40 for mounting the switch assembly 42, the button part on the switch assembly 42 protrudes out of the mounting cavity 3004 to facilitate the user to operate. By providing the mounting cavity 3004 isolated from the air inlet passage 41, the circuit in the switch assembly 42 is assembled while the airflow in the air inlet passage 41 is isolated, reducing the mutual influence between them.

[0090] As shown in Figure 2 , Figure 3 and Figure 5 , in some embodiments, the handle 40 comprises an air duct shell 2006 and a handle shell 2003 covering the outside of the air duct shell 2006, and a mounting cavity 3004 is configured between the handle shell 2003 and the air duct shell 2006. Specifically, it can be that the air duct shell 2006 is inwardly recessed at the position where the switch assembly 42 is installed, so that a mounting cavity 3004 is formed between the inner wall of the handle shell 2003 and the outer wall of the air duct shell 2006, thereby realizing the assembly of the switch assembly 42. Through such a design, the diameter of the handle 40 can be reduced, and it is more convenient for the user to hold. Among them, the mounting cavity 3004 is arranged as much as possible at a position where the handle 40 is relatively large in the direction of the heat generating assembly 10 or is relatively large in the direction of being affected by heat. In a specific embodiment, the mounting cavity 3004 is in communication with the above-mentioned circuit cavity 3001, and when the circuit cavity 3001 is in communication with the heat insulation cavity 3003, the mounting cavity 3004, the circuit cavity 3001 and the heat insulation cavity 3003 are in communication in sequence, which can not only meet the above-mentioned isolation of the air duct and the circuit, but also can reduce the leakage of heat and air through the three cavities surrounding the side. It should be noted that there is no dry hair and styling wind in the above-mentioned three cavities (mounting cavity 3004, heat insulation cavity 3003 and circuit cavity 3001).

[0091] As shown in Figure 2 , Figure 3 and Figure 5 , in some embodiments, the handle shell 2003 cooperates with the whole machine shell 2000. Specifically, a radially extending extension shell segment 2004 is arranged at the air inlet 315 of the air supply channel 1001 on the whole machine shell 2000, and the front end of the handle 40 extends into the extension shell segment 2004. The handle shell 2003 and the air duct shell 2006 have a mounting gap, and the extension shell segment 2004 is inserted into the mounting gap and can be fastened by screws. In summary, it can be understood that the above-mentioned whole machine body 1000, the circuit board rack 31, the motor control assembly 32, the heat generating assembly 10 installed in the whole machine body 1000, and the whole machine shell 2000 covering the outside of the whole machine body 1000 together constitute the head 1 of the hair care device. At the same time, the above-mentioned handle 40, switch assembly 42, motor 43 and motor power line connected to the tail side of the handle 40 together constitute the tail 2 of the hair care device. It should be noted in advance that, as shown in Figures 1-3 , in the present embodiment, the axial direction of the barrel 20 and the axial direction of the whole machine body 1000, the radial direction of the barrel 20 is the radial direction of the whole machine body 1000, and the handle 40 extends along the radial direction of the barrel 20. Thus, a hair care device in the shape of approximately "7" is formed.

[0092] AsFigure 2 , Figure 3 and Figure 7 As shown, in some embodiments, a third seal 93 is pressed at the air inlet 315. The third seal 93 is used to seal the connection between the air duct housing 2006 and the circuit board frame 31. Specifically, the third seal 93 improves the sealing performance at the junction of the air supply channel 1001 and the air inlet channel 41, reducing air leakage. The third seal 93 uses a shaped sealing ring to fit the air inlet 315 on the circuit board frame 31. The third seal 93 is bonded to the edge of the air inlet 315 on the circuit board frame 31. The front end of the air duct housing 2006 in the handle 40 is pressed against the third seal 93 and fixed to the circuit board frame 31. Simultaneously, the handle housing 2003 is fixedly connected to the main housing 2000, thereby achieving a sealed connection.

[0093] The two electrode ports of the first heating element 51 (i.e., the first electrode port 511 and the second electrode port 512), the two electrode ports of the second heating element 52 (i.e., the third electrode port 521 and the fourth electrode port 522), the first terminal 5401, and the second terminal 5402 that need to be electrically connected are electrically connected through a conductive connector 80. The conductive connector 80 includes a fixing part and two conductive connecting ears distributed at both ends of the fixing part. The conductive connector 80 is fixed to the support plate through the fixing part. The two electrode ports that need to be electrically connected to each other, or the electrode port and the terminal, are respectively wound around the two conductive connecting ears, so that the two can be electrically connected through the conductive connector 80, and at the same time, the two can be fixed to the support plate.

[0094] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A hair care device comprising a main body, a heating assembly, an air inlet, an air outlet, characterized in that, The whole machine body comprises a heating cavity, the heating assembly is arranged in the heating cavity, and when the hair care device operates, the airflow entering from the air inlet flows to the air outlet through the heating assembly; the heating assembly comprises: a support body; a first heating element arranged on the support body, comprising a first electrode port close to the air outlet and a second electrode port close to the air inlet; and a second heating element arranged on the support body, comprising a third electrode port close to the air outlet and a fourth electrode port close to the air inlet, the second electrode port and the fourth electrode port are respectively connected to the positive and negative terminals of a power supply module, and the power supply module is arranged away from the air outlet; at least two conductive connecting pieces fixedly arranged on the support body; and a temperature control element installed on the support body close to the air outlet, having a first terminal and a second terminal, the first terminal is electrically connected to the first electrode port through the conductive connecting piece, and the second terminal is electrically connected to the third electrode port through the conductive connecting piece, the power supply module, the first heating element, the second heating element and the temperature control element form a loop, the temperature control element is connected in series between the first heating element and the second heating element, for detecting the ambient temperature at the installation position thereof, and adjusting the on-off state of the loop according to the ambient temperature, the projection of the main body part of the temperature control element on the support body does not overlap with the projections of the first heating element and the second heating element on the support body.

2. The hair care appliance of claim 1, wherein, The temperature control element comprises a first temperature control element or a second temperature control element, and the first terminal and the second terminal are two terminal ends of the first temperature control element or the second temperature control element; The first temperature control element is used for collecting a first temperature around the first temperature control element, when the first temperature is greater than a first preset temperature threshold, the first temperature control element is in an off state, so that the loop is in an open circuit state; the second temperature control element is used for collecting a second temperature around the second temperature control element, when the second temperature is greater than a second preset temperature threshold, the second temperature control element is in an off state, so that the loop is in an open circuit state, when the second temperature is less than or equal to the second preset temperature threshold, the second temperature control element is in an on state, so that the loop is in a conduction state.

3. The hair care appliance of claim 1, wherein, The temperature control element comprises a first temperature control element and a second temperature control element, the first temperature control element and the second temperature control element are connected in series, and the first terminal and the second terminal are the terminals of the first temperature control element and the second temperature control element connected with the first heating element and the second heating element; The first temperature control device is used to collect the first temperature around the first temperature control device, and when the first temperature is greater than the first preset temperature threshold, the first temperature control device is in an off state, so that the circuit is in an open circuit state; the second temperature control device is used to collect the second temperature around the second temperature control device, and when the second temperature is greater than the second preset temperature threshold, the second temperature control device is in an off state, so that the circuit is in an open circuit state, and when the second temperature is less than or equal to the second preset temperature threshold, the second temperature control device is in a conduction state, so that the circuit is in a conduction state.

4. A hair care appliance as claimed in claim 2 or 3, characterised in that, The first preset temperature threshold ranges from 199.6°C to 200.4°C, and the second preset temperature threshold ranges from 150°C to 160°C.

5. The hair care appliance of claim 1, wherein, The support body comprises: a support body; a plurality of support plates are fixed on the support body in a radial manner with the support body as the center, and the first heating element, the second heating element and the temperature regulating element are arranged on the plurality of support plates.

6. A hair care appliance as claimed in claim 5, characterised in that, The temperature regulating element is arranged along the circumference of the support body.

7. The hair care appliance of claim 5, wherein, The plurality of support plates comprise a plurality of first support plates and a plurality of second support plates, the plurality of first support plates and the plurality of second support plates are arranged alternately, and the first height of the plurality of first support plates is less than the second height of the plurality of second support plates. The first heating element is a first layer of heating elements arranged around the plurality of first support plates. The second heating element is a second layer of heating elements arranged around the plurality of second support plates.

8. A hair care appliance as claimed in claim 7, characterised in that, The plurality of first support plates and the plurality of second support plates extend along the length direction of the support body.

9. A hair care appliance as claimed in claim 8, characterised in that, A plurality of first notches are arranged on the plurality of first support plates, and the first heating element is arranged in a spiral manner around the plurality of first notches; a plurality of second notches are arranged on the plurality of second support plates, and the second heating element is arranged in a spiral manner around the plurality of second notches.

10. The hair care appliance of claim 1, wherein, A heat insulating element is arranged between the first heating element and the second heating element.

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