CN216089307U - Changeable hair nursing device - Google Patents

Abstract

The utility model belongs to the technical field of hair care electric appliances, and particularly relates to a replaceable hair care device which comprises a main control handle and at least two hair care heads with different functions, wherein each hair care head is connected with the main control handle in a plug-in manner; the main control handle comprises a handle, a main control board, control keys and a power line; a cavity is arranged in the handle, the main control board is arranged in the cavity, one end of the handle is provided with a connecting position, and the power line is arranged at the other end of the handle and is connected with the main control board; one end of the main control board close to the connecting position is provided with a conductive piece; the power line is connected with the main control board, the control key is arranged on the main control board, and the pressing part extends out of the handle; each hair care head is provided with a connecting end, and the connecting end of each hair care head is provided with a connecting head; one end of the handle close to the connecting position is provided with a limiting part. Different hair care heads are replaced according to the requirements of users to meet the requirements for use, so that hair care devices with different functions do not need to be purchased independently, and the cost is saved.

Description

Changeable hair nursing device

Technical Field

The utility model belongs to the technical field of hair care electric appliances, and particularly relates to a replaceable hair care device.

Background

The current people, particularly women, can often manage hair; such as blow drying for hair care, straightening hair, curling hair, etc.; many people today therefore need to be equipped with hair care devices such as hair dryers, hair straighteners, hair curlers, etc. Not only causes inconvenience in experience for users, but also increases the use cost; and a certain structure in the electric appliances is damaged, so that the whole electric appliances are scrapped, resources are wasted, and the cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a replaceable hair care device which can be provided with different care heads so as to meet the requirements of users.

In order to achieve the above object, an embodiment of the present invention provides a replaceable hair care device, which includes a main control handle and at least two hair care heads with different functions, wherein each hair care head is connected to the main control handle in a plug-in manner; the main control handle comprises a handle, a main control board, control keys and a power line; a cavity is arranged in the handle, the main control board is arranged in the cavity, one end of the handle is provided with a connecting position, and the power line is arranged at the other end of the handle and is connected with the main control board; one end of the main control board close to the connecting position is provided with a conductive piece; the power line is connected with the main control board, the control key is arranged on the main control board, and the pressing part extends out of the handle; each hair nursing head is provided with a connecting end for being connected with the connecting position of the handle, and the connecting end of each hair nursing head is provided with a connecting head for being conducted with the conductive piece; one end of the handle close to the connecting position is provided with a limiting part for limiting the electric connector or fixing the conductive part.

Further, the electric fan is arranged in the cavity of the handle; an air inlet hole is further formed in one end, far away from the connecting position, of the handle, and an air hole communicated with the cavity is formed in the limiting piece; an air outlet is arranged on at least one hair nursing head.

Furthermore, one hair nursing head is a hair curling and straightening nursing head structure which is used for straightening and curling hair and comprises a lower clamping plate, an upper clamping plate and two groups of heating components; the interior of the lower clamping plate is of a hollow structure and comprises a first clamping surface, and one end of the lower clamping plate is provided with a connecting sleeve for being sleeved on a connecting position; an installation inclined plane is formed between the first clamping surface and the connecting sleeve, and an installation groove is formed in the installation inclined plane; the upper clamping plate comprises a second clamping surface, and a hollow structure with an opening at one end is arranged in the upper clamping plate; the top wall of the opening of the upper clamping plate is tilted upwards to form a pressing part, the bottom of the pressing part is provided with a connecting part, and the connecting part is pivoted in the mounting groove; an elastic piece is arranged between the upper clamping plate and the lower clamping plate, so that the upper clamping plate and the lower clamping plate are clamped; the two groups of heating components are respectively arranged in the upper clamping plate and the lower clamping plate, and the first clamping surface and the second clamping surface are respectively provided with a clearance avoiding opening which avoids the heating surface of the corresponding heating component; a plurality of vent holes are formed in the upper clamping plate and the lower clamping plate; the electric connector is arranged in the connecting sleeve and connected with the two groups of heating components.

Further, the heating assembly comprises an air isolation plate, a mounting frame, an electric heating block and a heat conduction panel; the air partition plate is arranged in the corresponding upper clamping plate or lower clamping plate, and forms a first air channel with the inner wall of the corresponding upper clamping plate or lower clamping plate; the mounting frame is arranged on the wind isolation plate, the heat conduction panel is arranged on the mounting frame, and one surface of the heat conduction panel extends out of the corresponding clearance opening; the electric heating block is arranged in the heat conduction panel and is connected with the electric connector.

Furthermore, the inner side surface of the heat conduction panel is provided with a limit groove, and the electric heating block is arranged in the limit groove; an elastic sheet is arranged between the electric heating block and the mounting frame and used for compressing the electric heating block in the limiting groove.

Furthermore, the connecting part comprises connecting plates positioned at two sides of the opening part of the upper clamping plate, and the connecting part extends from two sides of the mounting groove; the connecting shaft penetrates through the two connecting plates and the two connecting parts, and the elastic piece is a torsion spring sleeved on the connecting shaft; the bottom of the pressing part is also provided with an air deflector which extends into the mounting groove; the outer side surface of the air deflector is an arc surface and is attached to the end part of the mounting groove.

Furthermore, one hair care head is in a hot air comb structure and is used for combing hair; the heat-insulation device comprises a body, a heat-insulation support, a heat-conduction frame, an electric hot plate and a heat-conduction comb; the body is a cylindrical structure with one closed end and the other open end, and a mounting opening is formed in the body; the heat insulation support is arranged in the body, the heat conduction frame is arranged on the heat insulation support, a second air duct is formed between the heat conduction frame and the heat insulation support, the heat conduction frame is provided with an air passing hole, and the electric heating plate is arranged in the heat conduction frame and connected with the electric connector; the heat conducting comb comprises a comb plate and heat conducting comb teeth, the comb plate is attached to the heat conducting frame, and the heat conducting comb teeth are arranged on the comb plate and extend out of the mounting opening; the comb plate is provided with hot air holes.

Furthermore, two supporting parts extend from the bottom of the heat conducting frame, and an electric heating plate is arranged in each supporting part.

Furthermore, the hair care head also comprises a comb tooth upper cover which is buckled at the opening part of the mounting opening and compresses the comb plate on the heat conduction frame; the upper cover plate of the comb teeth is provided with a clearance groove for avoiding the heat conducting comb teeth; the edge of the comb tooth upper cover is also provided with protective comb teeth; one end of the mounting opening is provided with an elastic extrusion plate which is upwards warped, and the extrusion comb plate is attached to the inner side of the comb tooth upper cover.

Further, the electric connector comprises a fixing plate and a plurality of guide pins; the fixed plate is arranged in the connecting end, and the guide pin penetrates through the fixed plate; the limiting part is provided with a guide hole for avoiding space and guiding the guide pin, and the conductive piece is a plurality of conductive elastic pieces arranged at the end part of the main control board.

Furthermore, the connecting end is of a sleeve structure, the inner side wall of the connecting end is provided with a guide groove and a bayonet, and the outer side wall of the connecting position is provided with a guide piece matched with the guide groove; the handle is provided with an elastic buckle which extends into the connecting end and is buckled with the bayonet.

Furthermore, an electric conduction socket is arranged at one end, far away from the connecting position, in the handle, a plug is arranged on the power line, and the plug is connected in the socket in a pluggable mode.

Furthermore, the main control handle also comprises a circuit board protecting sleeve and a fan fixing sleeve which are arranged in the handle; the main control board is arranged in the circuit board protective sleeve, an air flow channel is formed between the circuit protective sleeve and the inner wall of the handle, the fan fixing sleeve is arranged close to one end of the power line, the fan fixing sleeve comprises an inner sleeve and an outer sleeve, a rib plate is connected between the inner sleeve and the outer sleeve, and a motor of the fan is arranged in the inner sleeve and extends into the circuit board protective sleeve.

One or more technical schemes in the replaceable hair care device provided by the embodiment of the utility model at least have the following technical effects:

1. the connecting end of the hair care head is connected into the connecting position of the handle, and the connecting head is in contact with the conductive piece to be electrified, so that the main control handle can control the hair care head to meet the requirements for use; and change different hair care heads according to user's demand to satisfy the demand that is used for, consequently need not to purchase the hair care implement of different functions alone, practiced thrift the cost.

2. When a certain structure is damaged, the damaged structure can be replaced, the whole structure does not need to be replaced, and the cost is further saved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a structural diagram of a replaceable hair care device according to an embodiment of the present invention.

Fig. 2 is an assembly view of the hair straightening and curling nursing head of the replaceable hair nursing device provided by the embodiment of the utility model.

Fig. 3 is a structural view of a hot air comb assembly of the replaceable hair care device according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view of fig. 2.

Fig. 5 is a cross-sectional view of fig. 3.

Fig. 6 is an exploded view of a replaceable hair care device main control handle according to an embodiment of the present invention.

Fig. 7 is an exploded view of the hair straightening and curling treatment heads of the replaceable hair care device according to the embodiment of the utility model.

Fig. 8 is an exploded view of an assembly of a hot air comb of the replaceable hair care appliance according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the utility model.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but 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 thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In an embodiment of the present invention, referring to fig. 1 to 8, a replaceable hair care device includes a main control handle 100 and at least two hair care heads with different functions, wherein each hair care head is connected with the main control handle 100 in a plug-in manner. The main control handle 100 includes a handle 110, a main control board 120, control keys 130, and a power cord 140. A cavity is arranged in the handle 110, the main control board 120 is arranged in the cavity, a connection position 111 is arranged at one end of the handle 110, and the power line 140 is arranged at the other end of the handle 110 and connected with the main control board 120. The main control board 120 is provided with a conductive member 121 at an end thereof adjacent to the connection position 111. The power cord 140 is connected to the main control board 120, and the control key 130 is disposed on the main control board 120 and the pressing portion thereof extends out of the handle 110. Each hair care head is provided with a connecting end for connecting with the connecting position 111 of the handle 110, and the connecting end of each hair care head is provided with a connecting head for conducting with the conductive piece 121; a limiting member 112 is disposed at an end of the handle 110 near the connecting position 111 for limiting the electrical connection head or the fixed conductive member 121. In this embodiment, the main control handle 100 can control the hair care head to meet the requirement for use by connecting the connection end of the hair care head to the connection position 111 of the handle 110 and contacting the connection end with the conductive member 121 for power supply; and change different hair care heads according to user's demand to satisfy the demand that is used for, consequently need not to purchase the hair care implement of different functions alone, practiced thrift the cost. And when a certain structure is damaged, the damaged structure can be replaced, the whole structure does not need to be replaced, and the cost is further saved.

Further, referring to fig. 1 to 6, the main control handle 100 further includes a fan 150 disposed in the cavity of the handle 110. An air inlet hole 113 is further formed in one end, far away from the connecting position 111, of the handle 110, and an air hole 114 communicated with the cavity is formed in the limiting member 112. At least one hair care head is provided with an air outlet, such as a hair curler head and a hot air comb head.

Further, referring to fig. 1 to 6, the main control handle 100 further includes a circuit board protecting sleeve 170 and a fan fixing sleeve 180 disposed in the handle 110. The main control board 120 is disposed in the circuit board protecting sleeve 170, an air flow channel 171 is formed between the circuit protecting sleeve 170 and the inner wall of the handle 110, the fan fixing sleeve 180 is disposed near one end of the power line 140, the fan fixing sleeve 180 includes an inner sleeve and an outer sleeve, a rib plate is connected between the inner sleeve and the outer sleeve, and a motor of the fan 150 is disposed in the inner sleeve and extends into the circuit board protecting sleeve 170. In this embodiment, the problem that the main control board 120 blocks the airflow can be avoided, and the electronic components on the main control board 120 are prevented from being loosened or dust is prevented from being accumulated by the airflow, so as to protect the main control board 120.

Still further, the handle 110 is formed by covering an upper shell, a lower shell and an end cover.

Further, referring to fig. 1, 2, 4 and 7, a hair care head 200 is a hair curling, hair straightening and hair care head structure for straightening hair and curling hair. Which includes a lower plate 210, an upper plate 220, and two sets of heat generating components 230. The lower clamp plate 210 has a hollow structure, and includes a first clamping surface 211, and a connecting sleeve 212 is disposed at one end of the lower clamp plate 210 and is adapted to be sleeved on the connecting position 111. An installation inclined plane 213 is formed between the first clamping surface 211 and the connecting sleeve 212, and an installation groove 214 is formed on the installation inclined plane 213. The upper plate 220 includes a second clamping surface 221, and a hollow structure with one open end is formed in the upper plate 220. The top wall of the opening of the upper clamp plate 220 is tilted upwards to form a pressing portion 222, the bottom of the pressing portion 222 is provided with a connecting portion 223, and the connecting portion 223 is pivoted in the mounting groove 214. An elastic member 215 is disposed between the upper plate 220 and the lower plate 210, so that the upper plate 220 and the lower plate 210 are clamped. Two sets of heating elements 230 are respectively arranged in the upper clamp plate 220 and the lower clamp plate 210, and the first clamping surface 211 and the second clamping surface 221 are both provided with clearance holes for avoiding the heating surfaces of the corresponding heating elements 230. A plurality of vent holes 201 are formed in the upper clamping plate 220 and the lower clamping plate 210; the electric connector 240 is disposed in the connecting sleeve 212 and connected to the two sets of heating elements 230. When a user needs to straighten hair or curl hair, the hair care head 200 of the embodiment is used, specifically, the connecting sleeve 212 of the lower splint 210 is sleeved on the connecting position 111 of the handle 110; the main control board 120, the fan 150 and the heat generating component 230 are powered by power lines, and the heat generating component 230 and the fan 150 are controlled to be powered by the control keys 130. When straightening hair, the upper clamp plate 220 and the lower clamp plate 210 are opened to clamp hair through the pressing part 222, so that the hair is clamped by the clamping surfaces of the two clamp plates, and the hair is heated through the two heating components 230 and pulled down along the hair, so that the hair is heated and straightened. When curling hair, after the hair is clamped by the upper clamping plate 220 and the lower clamping plate 210, the hair is wound on the hair care head 200, the hair is heated by the two heating assemblies 230, the hair is pulled downwards along the hair, meanwhile, external air is sucked into the handle through the fan 150, and wind is blown to the hair through the vent holes 201, so that the hair is cooled rapidly, and the hair curling effect is achieved.

Further, referring to fig. 1, 2, 4 and 7, the heat generating assembly 230 includes a wind shield 231, a mounting bracket 232, an electric heating block 233 and a heat conductive panel 234. The wind-proof plate 231 is arranged in the corresponding clamping plate, and forms a first wind channel 235, 236 with the corresponding clamping plate; the mounting frame 232 is disposed on the wind-isolating plate 231, and the heat-conducting panel 234 is disposed on the mounting frame 232, and one surface of the heat-conducting panel extends out of the corresponding clearance. The electric heating block 233 is disposed in the heat conductive panel 234 and connected to the electrical connector 240. In this embodiment, the electric heating block 233 is powered on to generate heat, and the heat is transferred to the heat conducting panel 234, so that the heat conducting panel 234 can heat and shape the hair when the hair is clamped. The air flow generated by the fan 150 passes through the first air ducts 235, 236 and then blows toward the hair through the air holes 201, thereby cooling the hair. Under the isolation effect of the air partition plate 231, the air flow is prevented from taking away excessive heat, the temperature of the heat conducting panel 234 is ensured, and the problems that the blown air is too high and the cooling effect of the blown air on hair is poor are also avoided.

Further, referring to fig. 1, 2, 4 and 7, a limit groove 237 is disposed on an inner side surface of the heat conducting panel 234, and the electric heating block 233 is disposed in the limit groove 237. An elastic sheet 238 is arranged between the electric heating block 233 and the mounting frame 232 and used for pressing the electric heating block 233 in the limiting groove 237. The electric heating block 233 is attached to the heat conducting panel 234 through the elastic sheet 238, so that the heat conducting efficiency is improved; and the electric heating block 233 can be effectively fixed to avoid loosening.

Further, referring to fig. 1, 2, 4 and 7, the connection part 223 includes connection plates at both sides of the mouth of the upper clamp plate 220, and connection parts 218 extend from both sides of the mounting groove 214; the connecting shaft 219 passes through the two connecting plates and the two connecting portions 218, and the elastic member 215 is a torsion spring sleeved on the connecting shaft 219. The bottom of the pressing portion 222 is further provided with an air deflector 224, and the air deflector 224 extends into the mounting groove 214; the outer side surface of the air deflector 224 is a circular arc surface and is attached to the end of the mounting groove 214. In this embodiment, the air deflector 224 guides the air flow into the first air channel 236 of the upper plate 220, so as to prevent the air flow from blowing out from the installation groove 214. And because the outer side surface of the air deflector 224 is a circular arc surface, the outer side surface of the air deflector 224 can be always contacted with the end surface of the mounting groove 214, and the sealing effect is achieved.

Further, referring to fig. 1, 2, 4 and 7, the contact tip 240 includes a fixing plate 241 and a plurality of guide pins 242. The fixing plate 241 is disposed in the connecting sleeve 212, and the guide pin 242 passes through the fixing plate 241. The position-limiting member 112 is provided with a guiding hole for guiding the pin 242, and the conductive member 121 is a plurality of conductive elastic pieces disposed at the end of the main control board 120.

Further, referring to fig. 1, 2, 4 and 7, the inner side wall of the connecting sleeve 212 is provided with a guide groove 202 and a bayonet, and the outer side wall of the connecting position 111 is provided with a guide 115 which is matched with the guide groove 202; the handle 110 is provided with an elastic buckle 116 which extends into the connecting sleeve 212 and is buckled with the bayonet. In this embodiment, when the connection sleeve 212 is sleeved on the connection position 111, the guide member 115 slides into the guide groove 202 to achieve the guiding and positioning functions; and the elastic buckle 116 is clamped into the bayonet, so that the hair care head 200 is fixed on the handle 110.

Further, referring to fig. 1, 3, 5 and 8, a hair care head 300 is in a hot air comb structure for combing hair. It includes a body 310, a heat insulation support 320, a heat conduction frame 330, an electric heating plate 340 and a heat conduction comb 350. The body 310 is a tubular structure with one end closed and the other end opened, and the body 310 is provided with an installation opening 311. The heat insulation support 320 is arranged in the body 310, the heat conduction frame 330 is arranged on the heat insulation support 320, the second air duct 301 is formed between the heat conduction frame 320 and the heat insulation support 320, the air passing hole 331 is formed in the heat conduction frame 330, and the electric heating plate 340 is arranged in the heat conduction frame 330 and connected with the electric connector 360. The heat conducting comb 350 comprises a comb plate 351 and heat conducting comb teeth 352, the comb plate 351 is attached to the heat conducting frame 330, and the heat conducting comb teeth 352 are arranged on the comb plate 351 and extend out of the mounting opening 311. The comb plate 351 is provided with hot air holes 353. When a user needs to comb and shape hair by the hot air comb, the open end of the hair care head 300 can be sleeved on the connecting position of the handle 110; and the electrical contact 360 is connected and conducted with the conductive member 121. The electric heating plate 340 can be electrified to generate heat, the heat is transferred to the heat conduction frame 330, the heat conduction frame 330 transfers the heat to the heat conduction comb 350, and then the hair is heated, straightened and shaped through the heat conduction comb 350. And the air flow can be blown into the second air channel 301 through the fan and blown out from the hot air holes 353, so that the air flow is heated to form hot air flow, and the hair can be dried, and the hair drying effect is achieved.

Further, referring to fig. 1, 3, 5 and 8, two support portions 332 extend from the bottom of the heat conducting frame 330, and an electric heating plate 340 is disposed in each support portion 332. In this embodiment, two supporting portions 332 are provided, so as to increase the ventilation effect of the second air duct 301.

Further, referring to fig. 1, 3, 5 and 8, the hair care head 300 further includes a comb upper cover 370, the comb upper cover 370 is fastened to the mouth of the mounting hole 311, and the compression comb plate 351 is on the heat conduction frame 330; the comb tooth upper cover 370 plate is provided with a clearance groove for clearance heat-conducting comb teeth 352; the edge of the comb tooth upper cover 370 is also provided with protective comb teeth 371; one end of the mounting opening 311 is provided with an elastic pressing plate 312 which is tilted upwards, and the pressing comb plate 351 is attached to the inner side of the comb tooth upper cover 370. In this embodiment, the comb teeth upper cover 370 is used to fix and limit the heat-conducting comb 350; and plays the guard action through protection broach 371, avoids human finger to touch heat conduction broach 352.

Further, referring to fig. 1, 3, 5 and 8, the contact 360 includes a fixing plate 261 and a plurality of guide pins 362. The fixing plate 361 is disposed in the opening of the body 210, and the guide pin 362 passes through the fixing plate 361. The position-limiting member 112 is provided with a guiding hole for guiding the pin 362, and the conductive member 121 is a plurality of conductive elastic pieces disposed at the end of the main control board 120.

Further, referring to fig. 1, 3, 5 and 8, the inner side wall of the mouth portion of the body 310 is provided with a guide groove 313 and a bayonet, and the outer side wall of the connection position 111 is provided with a guide 115 which is matched with the guide groove 313; the handle 110 is provided with an elastic buckle 116 which extends into the opening of the body 310 and is buckled with the bayonet. In this embodiment, when the body 310 is sleeved on the connecting position 111, the guiding element 115 slides into the guiding groove 313 to achieve the guiding and positioning functions; and allows the resilient clip 116 to snap into the bayonet to secure the hair care head 300 to the handle 110.

Further, referring to fig. 1 to 8, a conductive socket 160 is disposed at an end of the handle 110 away from the connection position 111, and the power cord 140 is provided with a plug 141, and the plug 141 is connected to the socket 160 in a pluggable manner. The power cord 140 can be rotated to prevent twisting during hair curling.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. A replaceable hair care device is characterized by comprising a main control handle and at least two hair care heads with different functions, wherein each hair care head is connected with the main control handle in a plug-in manner; the main control handle comprises a handle, a main control board, control keys and a power line; a cavity is formed in the handle, the main control board is arranged in the cavity, a connecting position is arranged at one end of the handle, and the power line is arranged at the other end of the handle and is connected with the main control board; a conductive piece is arranged at one end of the main control board close to the connecting position; the power line is connected with the main control board, the control key is arranged on the main control board, and the pressing part extends out of the handle; each hair care head is provided with a connecting end for being connected with the connecting position of the handle, and the connecting end of each hair care head is provided with a connecting head for being conducted with the conductive piece; one end of the handle, which is close to the connecting position, is provided with a limiting part for limiting the electric connector or fixing the conductive piece.

2. A replaceable hair care appliance as set forth in claim 1 wherein: the fan is arranged in the cavity of the handle; an air inlet hole is further formed in one end, far away from the connecting position, of the handle, and an air hole communicated with the cavity is formed in the limiting piece; at least one hair nursing head is provided with an air outlet.

3. A replaceable hair care appliance as set forth in claim 2 wherein: the hair care head is a hair curling and straightening hair care head structure, is used for straightening and curling hair and comprises a lower clamping plate, an upper clamping plate and two groups of heating components; the interior of the lower clamping plate is of a hollow structure and comprises a first clamping surface, and one end of the lower clamping plate is provided with a connecting sleeve for being sleeved on the connecting position; an installation inclined plane is formed between the first clamping surface and the connecting sleeve, and an installation groove is formed in the installation inclined plane; the upper clamping plate comprises a second clamping surface, and a hollow structure with an opening at one end is arranged in the upper clamping plate; the top wall of the opening of the upper clamping plate is tilted upwards to form a pressing part, and a connecting part is arranged at the bottom of the pressing part and pivoted in the mounting groove; an elastic part is arranged between the upper clamping plate and the lower clamping plate, so that the upper clamping plate and the lower clamping plate are clamped; the two groups of heating components are respectively arranged in the upper clamping plate and the lower clamping plate, and the first clamping surface and the second clamping surface are both provided with clearance ports which are in clearance correspondence to the heating surfaces of the heating components; a plurality of vent holes are formed in the upper clamping plate and the lower clamping plate; the electric connector is arranged in the connecting sleeve and connected with the two groups of heating components.

4. A replaceable hair care appliance as set forth in claim 3 wherein: the heating assembly comprises an air partition plate, an installation frame, an electric heating block and a heat conduction panel; the air partition plate is arranged in the corresponding upper clamping plate or lower clamping plate, and forms a first air channel with the inner wall of the corresponding upper clamping plate or lower clamping plate; the mounting frame is arranged on the wind isolation plate, the heat conduction panel is arranged on the mounting frame, and one surface of the heat conduction panel extends out of the corresponding air avoiding hole; the electric heating block is arranged in the heat conduction panel and connected with the electric connector.

5. A replaceable hair care appliance as claimed in claim 4, wherein: the inner side surface of the heat conduction panel is provided with a limiting groove, and the electric heating block is arranged in the limiting groove; an elastic sheet is arranged between the electric heating block and the mounting frame and used for pressing the electric heating block in the limiting groove.

6. A replaceable hair care appliance as set forth in claim 3 wherein: the connecting part comprises connecting plates positioned at two sides of the opening part of the upper clamping plate, and connecting parts extend from two sides of the mounting groove; the connecting shaft penetrates through the two connecting plates and the two connecting parts, and the elastic piece is a torsion spring sleeved on the connecting shaft; the bottom of the pressing part is also provided with an air deflector which extends into the mounting groove; the outer side surface of the air deflector is an arc surface and is attached to the end part of the mounting groove.

7. A replaceable hair care appliance as set forth in claim 2 wherein: the hair care head is of a hot air comb structure and is used for combing hair; the heat-insulation device comprises a body, a heat-insulation support, a heat-conduction frame, an electric hot plate and a heat-conduction comb; the body is of a cylindrical structure with one closed end and the other open end, and a mounting opening is formed in the body; the heat insulation support is arranged in the body, the heat conduction frame is arranged on the heat insulation support, a second air channel is formed between the heat conduction frame and the heat insulation support, an air passing hole is formed in the heat conduction frame, and the electric heating plate is arranged in the heat conduction frame and connected with the electric connector; the heat conduction comb comprises a comb plate and heat conduction comb teeth, the comb plate is attached to the heat conduction frame, and the heat conduction comb teeth are arranged on the comb plate and extend out of the mounting opening; the comb plate is provided with hot air holes.

8. A replaceable hair care appliance as set forth in claim 7 wherein: the bottom of heat conduction frame extends has two supporting parts, all is provided with the electric plate in each supporting part.

9. A replaceable hair care appliance as set forth in claim 7 wherein: the hair care head also comprises a comb tooth upper cover which is buckled at the opening part of the mounting opening and tightly presses the comb plate on the heat conducting frame; the comb tooth upper cover plate is provided with a clearance groove for avoiding the heat-conducting comb teeth; the edge of the comb tooth upper cover is also provided with protective comb teeth; one end of the mounting opening is provided with an upward warped elastic extrusion plate, and the comb plate is attached to the inner side of the comb tooth upper cover in an extruding manner.

10. A replaceable hair care appliance according to any one of claims 1 to 9, wherein: the electric connector comprises a fixing plate and a plurality of guide pins; the fixing plate is arranged in the connecting end, and the guide pin penetrates through the fixing plate; the limiting part is provided with a guide hole for avoiding space and guiding the guide pin, and the conductive piece is a plurality of conductive elastic pieces arranged at the end part of the main control board.

11. A replaceable hair care appliance according to any one of claims 1 to 9, wherein: the connecting end is of a sleeve structure, a guide groove and a bayonet are formed in the inner side wall of the connecting end, and a guide piece matched with the guide groove is arranged on the outer side wall of the connecting position; the handle is provided with an elastic buckle which extends into the connecting end and is buckled with the bayonet.

12. A replaceable hair care appliance according to any one of claims 1 to 9, wherein: the handle is characterized in that one end far away from the connecting position is provided with a conductive socket, the power line is provided with a plug, and the plug is connected in the socket in a pluggable manner.

13. A replaceable hair care appliance according to any one of claims 2 to 9, wherein: the main control handle further comprises a circuit board protecting sleeve and a fan fixing sleeve which are arranged in the handle; the main control board is arranged in the circuit board protective sleeve, an air channel is formed between the circuit protective sleeve and the inner wall of the handle, the fan fixing sleeve is close to one end of the power line and comprises an inner sleeve and an outer sleeve, a rib plate is connected between the inner sleeve and the outer sleeve, and a motor of the fan is arranged in the inner sleeve and stretches into the circuit board protective sleeve.

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