Hair drier

Abstract

The utility model relates to the field of hairdressing equipment, in particular to a hair drier which comprises a main machine, an accessory, a limiting assembly and a rotation stopping assembly. Wherein; the limiting assembly comprises a connector and a limiting groove. Wherein; the connector is arranged on the host, and limiting planes are arranged at the two ends of the connector in the first direction; the limiting groove is formed in the accessory and comprises a limiting channel and a limiting part; wherein; the limiting channel can allow the connector to pass through and enter the limiting part; the two side walls, in the first direction, of the limiting part are in contact fit with the two limiting planes in a one-to-one correspondence mode. The rotation stopping assembly can be connected with the host and the accessory when the connector is located at the limiting part so as to limit rotation of the accessory relative to the host. Through surface contact between the limiting plane and the side wall of the limiting groove, the effects that the accessory and the host are stably connected, and the electric sparking phenomenon is not prone to occurring between the accessory and the host are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hair styling devices, and in particular to a hair dryer. BACKGROUND

[0002] The conventional hair dryer is generally designed to generate airflow by a fan driven by a motor, to suck in air through an air inlet, to heat the air through an internal heating element, and to spray the heated air at high speed from an air outlet to achieve the effect of quickly drying hair.

[0003] The air outlet of the current hair dryer is equipped with various accessories for hair styling in different scenarios, but the locking structure of the accessories on the main machine is not stable enough and is prone to shaking, which may cause a risk of electric spark at the conductive connection of the live accessory. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the present application aims to provide a hair dryer to solve the technical problems in the prior art.

[0005] To achieve at least one of the above objectives, the present application provides the following technical solutions:

[0006] In a first aspect, the present application provides a hair dryer, comprising a main machine, an accessory, a limiting assembly, and a rotation-stopping assembly; wherein the limiting assembly comprises a connecting head and a limiting slot; the connecting head is arranged on the main machine, and the two ends of the connecting head along a first direction are each provided with a limiting plane, the first direction being the center line of the main machine; the limiting slot is arranged on the accessory, and the limiting slot comprises a limiting channel and a limiting part; the limiting channel can accommodate the connecting head to pass into the limiting part, and the connecting head moves along the first direction and along the circumference of the main machine when passing through the limiting channel; the two side walls of the limiting part along the first direction are in one-to-one contact with the two limiting planes; and the rotation-stopping assembly can connect the main machine and the accessory when the connecting head is located in the limiting part to restrict the rotation of the accessory relative to the main machine.

[0007] In the above technical solution, after the accessory is connected to the main machine, the limiting plane and the side wall of the limiting slot are in surface contact, which has the effect of stable connection between the accessory and the main machine, less shaking of the accessory, and less electric spark phenomenon between the accessory and the main machine.

[0008] In some embodiments, the limiting channel comprises a first channel and a second channel; the first channel can accommodate the connecting head to pass along the first direction; the second channel is connected to the first channel and the limiting part, and the second channel is arranged along the first direction and along the circumference of the main machine, so that the connecting head moves along the first direction and along the circumference of the main machine when passing through the second channel.

[0009] In some embodiments, the two ends of the connecting head in contact with the inner side wall and the outer side wall of the second channel when passing through the second channel are each provided with a chamfer.

[0010] In some embodiments, the inner sidewall and the outer sidewall of the second channel are parallel planar sidewalls.

[0011] In some embodiments, a neutral line pin and a second conductive pin adjacent to each other along the circumference of the main unit are provided on the host; a neutral line spring pin corresponding to the neutral line pin and a second spring pin corresponding to the second conductive pin are provided on the accessory; the gap between the neutral line pin and the second spring pin in the first state is greater than the electrical gap, and the first state is the state where the connector is located in the limiting channel.

[0012] In some embodiments, the anti-rotation assembly includes a anti-rotation groove and an accessory lock; wherein; the anti-rotation groove is arranged on the accessory; the accessory lock is arranged on the main unit, the accessory lock includes a conical portion, the conical portion includes a first side surface at an angle to the first direction, and the first side surface is the side surface where the accessory lock contacts the side wall of the anti-rotation groove along the circumference of the main unit.

[0013] In some embodiments, the anti-rotation assembly further includes a locking spring, the two ends of which respectively contact the accessory lock and the host, applying pressure on the accessory lock toward the accessory.

[0014] In some embodiments, the main body includes a sleeve with an avoidance groove formed on the sleeve; the accessory lock includes a toggle portion, which is located in the avoidance groove and can move along a first direction in the avoidance groove. When the toggle portion moves away from the accessory along the first direction, the accessory lock can move out of the anti-rotation groove.

[0015] On the second aspect, the present application also provides a hair dryer, comprising a main unit, an accessory, a limiting assembly and a rotation-stop assembly; wherein, the limiting assembly comprises a connector and a limiting groove; wherein, the connector is arranged on the accessory, and limiting planes are arranged at both ends of the connector along a first direction, and the first direction is the center line of the main unit; the limiting groove is arranged on the main unit, and the limiting groove comprises a limiting channel and a limiting portion; wherein, the limiting channel can accommodate the connector to pass through the limiting portion, and the connector moves along the first direction and along the circumference of the main unit when passing through the limiting channel; the two side walls of the limiting portion along the first direction are in one-to-one contact and cooperation with the two limiting planes; the rotation-stop assembly can connect the main unit and the accessory when the connector is located at the limiting portion to limit the rotation of the accessory relative to the main unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment;

[0018] Figure 2 This is a schematic diagram of the structure of a connector on a host and an accessory lock buckle in an embodiment;

[0019] Figure 3 This is a structural diagram of an embodiment in which the connector is located within a limiting channel during installation of the accessory on the host;

[0020] Figure 4 This is a structural diagram of an embodiment in which the connector is located within the limiting portion after the accessory is installed on the host;

[0021] Figure 5 is a schematic structural diagram of a conductive pin on a base in an embodiment;

[0022] Figure 6 It is a schematic structural diagram of a pop-up ring in an embodiment.

[0023] The reference numerals are as follows:

[0024] 1. Main unit; 11. First conductive pin; 12. Second conductive pin; 13. Sleeve; 131. Avoidance groove; 14. Plug; 15. Pop-up ring; 16. Base; 171. First live pin; 172. Second live pin; 173. Neutral pin; 174. Ground pin; 175. Accessory identification pin; 2. Accessory; 3. Limiting assembly; 31. Connector; 311. Limiting plane; 312. Chamfer; 32. Limiting groove; 321. Limiting channel; 3211. First channel; 3212. Second channel; 322. Limiting part; 4. Anti-rotation assembly; 41. Accessory lock; 411. Conical part; 412. Toggle part; 413. First side; 42. Anti-rotation groove; 43. Locking spring. DETAILED DESCRIPTION

[0025] The present application will be further described in detail below with reference to the accompanying drawings and examples, through which the features and advantages of the present application will become more clearly understood.

[0026] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by technicians in the technical field to which this application belongs; the terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions.

[0027] The phrase "embodiment" mentioned in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it refer to independent or alternative embodiments that are mutually exclusive with other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0028] The term "exemplary" is used herein to mean "serving as an example, embodiment, or illustration." Any embodiment described as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0029] In the description of this application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary and secondary relationship of the indicated technical features.

[0030] In the description of this application, the technical term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0031] In the description of this application, the orientations or positional relationships indicated by technical terms such as "upper", "lower", "inside", "outside", "front", "back", "left", "right", "top", and "bottom" are orientations or positional relationships based on the working state of this application. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0032] In the description of this application, unless otherwise specified or limited, technical terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0033] In the description of this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0034] The "parallel" and "perpendicular" mentioned in this application can not only be completely parallel or perpendicular, but also have a certain error; for example, if the angle between the two is greater than or equal to 0° and less than or equal to 5°, the two are considered to be parallel to each other; if the angle between the two is greater than or equal to 85° and less than or equal to 95°, the two are considered to be perpendicular to each other.

[0035] In the description of this application, “plurality” means two or more (including two), unless otherwise clearly and specifically defined.

[0036] In the description of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, and other dimensions of the integrated device shown in the drawings are merely illustrative and do not constitute any limitation on this application.

[0037] As part of the creative concept of this application, before describing the embodiments of this application, it is necessary to analyze the causes of the shaking problem of accessories installed on the host in the related technology, and obtain the technical solution of the embodiments of this application through reasonable analysis.

[0038] In the related art, hair dryers are equipped with a variety of accessories that are detachably connected to the main unit. The type of accessories is determined by need and includes, but is not limited to, a concentrated air nozzle, a fluffing nozzle, a negative ion generator, a straightening comb, a curling comb, a diffuser, a wide-tooth comb, an oval comb, and a round brush. Some accessories have a secondary heating function. This requires a conductive connection between the accessory and the main unit, which powers the accessory. The accessory has a heating element inside, and a heating button can be used to heat the hair again.

[0039] The host generally includes an air inlet, a fan unit and an air outlet. The fan unit allows external air to enter the host from the air inlet and blow out from the air outlet.

[0040] The main unit is also provided with a plurality of conductive needles, which are located at the periphery of the air outlet. The plurality of conductive needles are arranged at intervals along the circumference of the main unit, and the axis of any conductive needle is arranged along the first direction.

[0041] The accessory has multiple spring pins, which correspond one-to-one to multiple conductive pins on the main unit and are arranged along the circumference of the accessory. When the spring pins come into contact with the conductive pins, a conductive connection is achieved between the accessory and the main unit.

[0042] Furthermore, a temperature sensing element is provided in the accessory, which is electrically connected to the circuit board in the accessory. The temperature signal sensed by the temperature sensing element can be transmitted to the main control circuit board. The main control circuit board can control the operation of the heating element in the accessory, and then control the temperature of the accessory to achieve precise temperature control of the accessory.

[0043] When connecting an accessory to the main unit, the connection must be stable to reduce or prevent any shaking. Furthermore, due to the electrical connection between the accessory and the main unit, if the locking mechanism is unstable, shaking can create a risk of ignition at the conductive connection of the live accessory. Furthermore, the accessory must be easily disassembled from the main unit to facilitate user interaction with different devices.

[0044] To this end, the present application provides a hair dryer, comprising a main unit, an accessory, a limit assembly and a rotation-stop assembly; wherein, the limit assembly comprises a connector and a limit groove; wherein, the connector is arranged on the main unit, and limit planes are arranged at both ends of the connector along the first direction, and the first direction is the center line of the main unit; the limit groove is arranged on the accessory, and the limit groove comprises a limit channel and a limit part; wherein, the limit channel can accommodate the connector to pass through the limit part, and the connector moves along the first direction and along the circumference of the main unit when passing through the limit channel; the two side walls of the limit part along the first direction are in one-to-one contact and cooperation with the two limit planes; the rotation-stop assembly can connect the main unit and the accessory when the connector is located at the limit part, so as to limit the rotation of the accessory relative to the main unit, thereby solving the technical problem of shaking of the accessory installed on the main unit in the prior art.

[0045] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings. The technical features involved in the different implementation modes of the present application described below can be combined with each other as long as there is no conflict between them.

[0046] For the convenience of explanation, the first direction is defined as the center line of the host. In the accompanying drawings, the first direction is represented as the X direction. Accessories can be selected according to user needs. Figure 1 No attachments are shown.

[0047] Reference Figure 1 In this embodiment, the host further includes a wiring harness and a plug 14. The plug 14 is used to connect to a socket. When the plug 14 is connected to a live socket, the wiring harness connects the host 1 to electricity.

[0048] The embodiment of the present application discloses a hair dryer. Figure 2 as well as Figure 3 The hair dryer includes a main unit 1, an accessory 2, a limit assembly 3 and a rotation-stop assembly 4.

[0049] The limiting assembly 3 includes a connector 31 and a limiting slot 32. The connector 31 is disposed on the host 1, and limiting planes 311 are disposed at both ends of the connector 31 along a first direction.

[0050] The limiting groove 32 is set on the accessory 2, and the limiting groove 32 includes a limiting channel 321 and a limiting portion 322. The limiting channel 321 can accommodate the connector 31 to pass into the limiting portion 322, and the connector 31 moves along the first direction and along the circumference of the main unit 1 when passing through the limiting channel 321; the two side walls of the limiting portion 322 along the first direction are in one-to-one contact and cooperation with the two limiting planes 311.

[0051] When the connector 31 is located at the limiting portion 322 , the anti-rotation assembly 4 can connect the main unit 1 and the accessory 2 to restrict the accessory 2 from rotating relative to the main unit 1 .

[0052] Reference Figure 2 , which shows an exploded view of the base 16 and the pop-up ring 15 along the first direction. For example, the host 1 includes a base 16 and a pop-up ring 15 mounted and fixed on the base 16. The structure of the pop-up ring 15 can be seen in FIG. Figure 6 A portion of the position-limiting assembly 3 is disposed on the pop-up ring 15, and another portion is disposed on the accessory 2. A portion of the anti-rotation assembly 4 is disposed on the base 16, and another portion is disposed on the accessory 2. When the accessory 2 is mounted on the main unit 1, the position-limiting assembly 3 and the anti-rotation assembly 4 cooperate to ensure that the accessory 2 is stably mounted on the main unit 1, reducing or preventing the accessory 2 from shaking on the main unit 1.

[0053] Reference Figure 2 as well as Figure 3 The position limiting assembly 3 is described below as an example. The position limiting assembly 3 includes a connector 31 disposed on the pop-up ring 15. The connector 31 is fixed to the inner side of the pop-up ring 15. There is at least one connector 31. In this embodiment, there are four connectors 31, which are evenly spaced along the first direction along the circumference of the main unit 1. In other embodiments, the number of connectors 31 may be one, two, three, or five.

[0054] Reference Figure 3 To facilitate the description of the limit assembly 3, the accompanying drawings illustrate one of the limit slots 32 on the accessory 2 corresponding to the connector 31. The specific type and structure of the accessory 2 can be set as needed. This embodiment mainly describes the connection structure between the accessory 2 and the host 1 in detail. It should be noted that Figure 3The structure of the connector 31 and the retaining groove 32 is merely an illustration of the connection principle, and the specific structure of the connector 31 and the retaining groove 32 has been simplified, such as the rounded transition between the connector 31 and the retaining groove 32. The number of retaining grooves 32 corresponds to the number of connectors 31. In this embodiment, there are four retaining grooves 32 provided on the attachment 2.

[0055] The shape of the connector 31 is shown in FIG. Figure 3 , limiting planes 311 are provided at both ends of the connector 31 along the first direction, the two limiting planes 311 are parallel to each other, and the limiting planes 311 are perpendicular to the first direction.

[0056] The limiting groove 32 includes a limiting channel 321 and a limiting portion 322. The limiting channel 321 can accommodate the connector 31 to enter the limiting portion 322. The two side walls of the limiting portion 322 along the first direction are in contact with the two limiting planes 311 in a one-to-one correspondence. Figure 4 , Figure 4 The dotted box is used to illustrate the area of ​​the limiting portion 322 and the area of ​​the limiting channel 321, wherein the limiting channel 321 is also distinguished by the dotted line. The limiting channel 321 includes a first channel 3211 and a second channel 3212, which will be explained in the subsequent content.

[0057] When the connector 31 moves into the limiting portion 322 through the limiting channel 321 , the two limiting planes 311 of the connector 31 contact the two side walls of the limiting portion 322 in a one-to-one correspondence, thereby limiting the relative movement of the accessory 2 and the pop-up ring 15 along the first direction.

[0058] Compared with the cylindrical connector structure, the connector 31 in this embodiment adopts a square structure. When the accessory 2 is fixed to the main unit 1, the connector 31 and the limit groove 32 are in surface contact along the first direction. The contact area is larger than that of the cylindrical connector structure, so the stability is higher and the wear at the contact position is smaller, so that the accessory 2 can remain stable after being installed on the main unit 1, and can still maintain a stable connection after repeated installation.

[0059] Reference Figure 3 The limiting passage 321 is a passage for accommodating the connector 31 to pass through and enter the limiting portion 322. The limiting passage 321 includes a first end and a second end. The first end is configured to accommodate the connector 31 and the second end is configured to connect to the limiting portion 322. After entering the limiting passage 321 from the first end, the connector 31 moves within the limiting passage 321 and enters the limiting portion 322 from the second end. The first and second ends are spaced apart in a first direction and are spaced apart along the circumference of the main unit 1. When passing through the limiting passage 321, the connector 31 moves in the first direction and along the circumference of the main unit 1.

[0060] After the connector 31 moves to the limiting portion 322 in the limiting channel 321, the connector 31 is restricted by the limiting portion 322 and cannot move along the first direction. At this time, the anti-rotation component 4 can connect the main unit 1 with the accessory 2, preventing the accessory 2 from rotating relative to the main unit 1 along the circumferential direction of the main unit 1.

[0061] The anti-rotation structure in the following description of this embodiment illustrates an accessory lock 41 that can be inserted into or removed from an anti-rotation groove 42. The anti-rotation structure is not limited to the structure disclosed in this embodiment. In other embodiments, the anti-rotation structure can have other structural forms, such as a structure including a latch and pin holes provided on the main unit 1 and the accessory 2. When the pin holes on the main unit 1 and the accessory 2 correspond, the latch is inserted into the pin hole to achieve a fixed connection between the main unit 1 and the accessory 2.

[0062] It should be noted that the risk of sparks at the conductive connection between the conductive pin and the spring pin caused by the swing of accessory 2 relative to the main unit 1 is due to the separation of the conductive pin and the spring pin. Therefore, the swing of accessory 2 relative to the main unit 1 is primarily due to the angle between the swing of accessory 2 and the first direction. When accessory 2 rotates circumferentially around the main unit 1, the conductive pin and the spring pin are cylindrical, and there is a contact surface perpendicular to the first direction between them. Therefore, the conductive pin and the spring pin can rotate circumferentially relative to the main unit 1 within a certain range.

[0063] In this embodiment, after the accessory 2 is connected to the main unit 1, the limiting plane 311 and the side wall of the limiting groove 32 are in surface contact, the connection between the accessory 2 and the main unit 1 is stable and not prone to shaking, the conductive needle and the elastic needle can maintain contact, and electric sparks are not prone to occur.

[0064] Reference Figure 4 As an optional solution, the limiting channel 321 includes a first channel 3211 and a second channel 3212. The first channel 3211 can accommodate the connector 31 passing through in a first direction. The second channel 3212 connects the first channel 3211 and the limiting portion 322. The second channel 3212 is arranged along the first direction and along the circumference of the main unit 1, so that the connector 31 moves in the first direction and along the circumference of the main unit 1 when passing through the second channel 3212.

[0065] For example, the first channel 3211 is a square channel arranged along the first direction, and the second channel 3212 is a square channel arranged obliquely relative to the first direction. The sidewalls of the first channel 3211 are arranged parallel to the first direction, and the sidewalls of the second channel 3212 are at an angle to the first direction.

[0066] The connector 31 moves in the first channel 3211 along the first direction, and moves in the second channel 3212 along the first direction and rotates along the circumference of the main unit 1 .

[0067] When installing the accessory 2 on the host 1, it is necessary to align the limiting channel 321 and the connector 31 along the first direction before installing the accessory 2 on the host 1. The existence of the first channel 3211 allows the user to move the accessory 2 a certain distance along the first direction so that the connector 31 enters the limiting channel 321. Compared with the method of directly moving the accessory 2 along the first direction and rotating the accessory 2 circumferentially along the host 1, the setting of the first channel 3211 makes it easier for the user to install the accessory 2 on the host 1.

[0068] Furthermore, to facilitate the connector 31 to enter the first channel 3211, the first channel 3211 is provided with a flare, which facilitates the connector 31 to enter the first channel 3211. The first end is provided at one end of the first channel 3211 away from the second channel 3212, and the flare is provided at the first end.

[0069] Reference Figure 4 As an optional solution, chamfers 312 are provided at both ends of the connector 31 that contacts the inner and outer walls of the second channel 3212 when the connector 31 passes through the second channel 3212 .

[0070] Exemplarily, the chamfer 312 between the connector 31 and the inner wall is smaller than the chamfer 312 between the connector 31 and the outer wall, and the distance moved between the connector 31 and the inner wall is smaller than the distance moved between the connector 31 and the outer wall.

[0071] The chamfer 312 reduces the distance between the inner and outer walls of the second channel 3212. Compared to the connector 31 with edges, the chamfer 312 on the connector 31 in this embodiment has a larger contact area with the second channel 3212 during movement, resulting in less shaking during movement and less wear on the connector 31 during movement.

[0072] Reference Figure 4 As an optional solution, the inner sidewall and the outer sidewall of the second channel 3212 are parallel plane sidewalls. The area of ​​the inner sidewall of the second channel 3212 is smaller than the area of ​​the outer sidewall of the second channel 3212.

[0073] Reference Figure 5 As an optional solution, the host 1 includes a neutral pin 173 and a second conductive pin 12 adjacent to each other along the circumference of the host 1. The accessory 2 is provided with a neutral spring pin corresponding to the neutral pin 173 and a second spring pin corresponding to the second conductive pin 12.

[0074] The gap between the neutral pin 173 and the second spring pin in the first state is larger than the electrical gap. The first state is a state where the connector 31 is located in the limiting channel 321 .

[0075] Exemplarily, the gap between the neutral pin 173 and the other conductive pins is greater than the electrical clearance. The host 1 is further provided with a first conductive pin 11, a first live pin 171, a second live pin 172, a ground pin 174, and an accessory 2 identification pin 175. These pins are arranged sequentially along the circumference of the host 1. Accessory 2 is provided with spring pins corresponding one-to-one to the seven conductive pins on the host 1; these spring pins are not shown in the accompanying drawings.

[0076] Since the neutral pin 173 of the host 1 carries voltage, when the accessory 2 moves, if the gap between the protruding part of the neutral pin 173 and the surface of the second conductive pin of the accessory 2 is less than the creepage distance of 8 mm, there will also be a fire hazard.

[0077] The embodiment of the present application increases the distance between the neutral pin 173 and the other conductive pins, and combines the structural type of the limiting channel 321, that is, the setting of the first channel 3211 and the second channel 3212, so that when the accessory 2 is assembled and the accessory 2 moves, the gap between the protruding part of the neutral pin 173 and the surface of the conductive pin of the second live pin 172 of the accessory 2 is greater than the creepage distance of 8 mm, thereby ensuring that no sparking occurs during the assembly process.

[0078] Reference Figure 2 as well as Figure 3 As an optional solution, the anti-rotation assembly 4 includes an anti-rotation groove 42 and an accessory lock 41. The anti-rotation groove 42 is provided on the accessory 2, and the accessory lock 41 is provided on the main unit 1. The accessory lock 41 includes a tapered portion 411. The tapered portion 411 includes a first side surface 413 that is at an angle to the first direction. The first side surface 413 is the side surface of the accessory lock 41 that contacts the anti-rotation groove 42 along the circumferential side wall of the main unit 1.

[0079] Exemplarily, the anti-rotation groove 42 and the limiting groove 32 are arranged at intervals along the circumference of the main unit 1 , and the anti-rotation groove 42 is arranged on the accessory 2 .

[0080] In this embodiment, the accessory lock 41 is assembled on the base 16 in a sliding manner along a first direction. In another embodiment, the accessory lock 41 is hingedly assembled on the base 16. After the accessory lock 41 is rotated, the conical portion 411 can be embedded in the anti-rotation groove 42.

[0081] The accessory lock buckle 41 is assembled on the outside of the base 16 and slides along the first direction. The accessory lock buckle 41 slides back and forth in the set area along the first direction on the base 16. The specific sliding method of the accessory lock buckle 41 on the base 16 will not be repeated here. According to design requirements, the accessory 2 can slide back and forth along the first direction on the base 16, and will not interfere with other structures on the base 16 during the sliding process.

[0082] Figure 3 The schematic diagram of the connector 31 located in the second channel 3212 is shown. Figure 4 , which shows a schematic diagram of the connector 31 positioned within the limiting portion 322. The accessory lock 41 includes a tapered portion 411 at one end facing the air outlet of the main unit 1. One side surface of the tapered portion 411 along the circumference of the main unit 1 is a first side surface 413. The first side surface 413 is at an angle to the first direction, allowing the accessory lock 41 to contact the side wall of the anti-rotation groove 42 along the circumference of the main unit 1, thereby preventing the accessory 2 from rotating relative to the main unit 1 along the circumference of the main unit 1.

[0083] After the conical portion 411 moves to the anti-rotation groove 42 , the locking buckle blocks the accessory 2 from rotating relative to the main unit 1 along the circumferential direction of the main unit 1 , and cooperates with the limiting component 3 to lock the accessory 2 on the main unit 1 .

[0084] It should be noted that, when the connector 31 moves to the limiting portion 322, the tapered portion 411 can move to the anti-rotation groove 42. When the tapered portion 411 moves to the anti-rotation groove 42, the first side surface 413 of the tapered portion 411 contacts and presses against the side wall of the anti-rotation groove 42. Figure 4 In order to conveniently show the tapered portion 411 and the first side surface 413, a gap is set between the side surface of the tapered portion 411 and the side wall of the anti-rotation groove 42. The pop-up ring 15 is provided with an escape channel, which can be seen in FIG. Figure 6 The square channel in the middle is used to prevent the tapered portion 411 from extending out.

[0085] Reference Figure 2 as well as Figure 3 As an optional solution, the anti-rotation component 4 also includes a locking spring 43, the two ends of which are respectively in contact with the accessory lock 41 and the host 1, applying pressure on the accessory lock 41 toward the accessory 2.

[0086] Exemplarily, the lock spring 43 is a compression spring, one end of which contacts the accessory lock 41 and the other end contacts the base 16 . The compression spring always applies pressure to the accessory lock 41 toward the pop-up ring 15 .

[0087] The setting of the compression spring can press the conical portion 411 tightly into the anti-rotation groove 42, keep the conical portion 411 stable in the anti-rotation groove 42, reduce the occurrence of the conical portion 411 moving out of the anti-rotation groove 42 due to vibration, and improve the stability of the connection between the accessory 2 and the host 1.

[0088] When the accessory 2 is rotated to a suitable position relative to the host 1, that is, when the connecting head 31 is located at the limit portion 322, the locking spring 43 can push the accessory lock 41 to slide along the first direction toward the accessory 2, so that the accessory lock 41 can automatically embed into the anti-rotation groove 42, thereby improving the convenience of connecting the accessory 2 to the host 1.

[0089] Furthermore, a limiting column is provided on the base 16 , and the limiting column is located inside the compression spring, and is used to keep the position between the limiting column and the base 16 always within a set range.

[0090] Reference Figure 1 As an optional solution, the main body 1 includes a sleeve 13, and an avoidance groove 131 is opened on the sleeve 13.

[0091] Reference Figure 1 as well as Figure 3 The accessory lock 41 includes a toggle portion 412, which is located in the avoidance groove 131 and can move along the first direction in the avoidance groove 131. When the toggle portion 412 moves away from the accessory 2 along the first direction, the accessory lock 41 can move out of the anti-rotation groove 42.

[0092] For example, the sleeve 13 is mounted on the outside of the base 16 and is provided with a square-shaped escape groove 131. The toggle portion 412 is a square block located within the escape groove 131. A gap exists between the ends of the toggle portion 412 along the first direction and the two side walls of the escape groove 131 along the first direction. The toggle portion 412 can reciprocate within the escape groove 131 along the first direction.

[0093] When the conical portion 411 needs to be moved out of the anti-rotation groove 42, a force is applied to the toggle portion 412 by fingers in the first direction away from the accessory 2, which can drive the accessory lock 41 to move, so that the conical portion 411 is moved out of the anti-rotation groove 42. At this time, the accessory 2 can be rotated to move the connector 31 located at the limiting portion 322 into the limiting channel 321 and out of the limiting channel 321, thereby realizing the disassembly of the accessory 2 and the host 1.

[0094] Reference Figure 3 As an optional solution, the anti-rotation groove 42 is a tapered groove that cooperates with the tapered portion 411.

[0095] In this embodiment, the anti-rotation groove 42 is a tapered groove that cooperates with the tapered portion 411 of the accessory lock 41. The tapered portion 411 fits tightly with the tapered groove to improve the stability of the connection between the accessory 2 and the host 1; and the setting of the tapered groove facilitates the insertion of the tapered portion 411 into the tapered groove.

[0096] The present application also discloses a hair dryer, comprising a main unit 1 , an accessory 2 , a position limiting component 3 and a rotation-stopping component 4 .

[0097] The limiting assembly 3 includes a connector 31 and a limiting groove 32; wherein, the connector 31 is arranged on the accessory 2, and limiting planes 311 are arranged at both ends of the connector 31 along the first direction, and the first direction is the center line of the host 1; the limiting groove 32 is arranged on the host 1, and the limiting groove 32 includes a limiting channel 321 and a limiting portion 322; wherein, the limiting channel 321 can accommodate the connector 31 to pass through the limiting portion 322, and the connector 31 moves along the first direction and along the circumference of the host 1 when passing through the limiting channel 321.

[0098] The two side walls of the limiting portion 322 along the first direction are in contact with the two limiting planes 311 in a one-to-one correspondence; the anti-rotation component 4 can connect the host 1 and the accessory 2 when the connecting head 31 is located at the limiting portion 322 to limit the rotation of the accessory 2 relative to the host 1.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the technical solutions of the embodiments of this application, and they should all be included in the scope of the claims and description of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any manner.

[0100] The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A hair dryer, characterized in that: It comprises a main unit (1), an accessory (2), a position limiting component (3) and a rotation-stopping component (4); wherein, The limiting assembly (3) comprises a connecting head (31) and a limiting groove (32); wherein, The connector (31) is arranged on the host (1), and finite planes (311) are provided at both ends of the connector (31) along a first direction, wherein the first direction is the center line of the host (1); The limiting groove (32) is provided on the accessory (2), and the limiting groove (32) includes a limiting channel (321) and a limiting portion (322); wherein, The limiting channel (321) can accommodate the connector (31) to pass through the limiting portion (322), and the connector (31) moves in a first direction and along the circumference of the main unit (1) when passing through the limiting channel (321); The two side walls of the limiting portion (322) along the first direction are in contact and fit with the two limiting planes (311) in a one-to-one correspondence; The anti-rotation component (4) can connect the main unit (1) and the accessory (2) when the connecting head (31) is located at the limiting portion (322) to limit the rotation of the accessory (2) relative to the main unit (1).

2. The hair dryer according to claim 1, characterized in that The limiting channel (321) includes a first channel (3211) and a second channel (3212); wherein, The first channel (3211) can accommodate the connection head (31) passing through along the first direction; The second channel (3212) is connected to the first channel (3211) and the limiting portion (322), and the second channel (3212) is arranged along the first direction and along the circumference of the main unit (1), so that the connecting head (31) moves along the first direction and along the circumference of the main unit (1) when passing through the second channel (3212).

3. The hair dryer according to claim 2, characterized in that Both ends of the connector (31) that come into contact with the inner side wall and the outer side wall of the second channel (3212) when passing through the second channel (3212) are provided with chamfers (312).

4. The hair dryer according to claim 3, characterized in that The inner side wall and the outer side wall of the second channel (3212) are planar side walls parallel to each other.

5. The hair dryer according to claim 3, characterized in that The host (1) is provided with a neutral line needle (173) and a second conductive needle (12) adjacent to each other along the circumference of the host (1); The accessory (2) is provided with a zero line spring pin corresponding to the zero line pin (173), and a second spring pin corresponding to the second conductive pin (12); The gap between the neutral pin (173) and the second elastic pin in the first state is greater than the electrical gap, and the first state is a state in which the connector (31) is located in the limiting channel (321).

6. The hair dryer according to any one of claims 1 to 5, characterized in that The anti-rotation assembly (4) comprises an anti-rotation groove (42) and an accessory lock buckle (41); wherein, The anti-rotation groove (42) is provided on the accessory (2); The accessory lock buckle (41) is arranged on the main unit (1), and the accessory lock buckle (41) includes a tapered portion (411). The tapered portion (411) includes a first side surface (413) that forms an angle with the first direction, and the first side surface (413) is a side surface where the accessory lock buckle (41) contacts the side wall of the anti-rotation groove (42) along the circumference of the main unit (1).

7. The hair dryer according to claim 6, characterized in that The anti-rotation assembly (4) further comprises a locking spring (43), the two ends of which respectively contact the accessory lock (41) and the host (1), applying pressure on the accessory lock (41) in the direction of the accessory (2).

8. The hair dryer according to claim 7, characterized in that The main machine (1) comprises a sleeve (13), and a avoidance groove (131) is provided on the sleeve (13); The accessory lock buckle (41) comprises a toggle portion (412), the toggle portion (412) is located in the avoidance groove (131), and can move along the first direction in the avoidance groove (131); when the toggle portion (412) moves away from the accessory (2) along the first direction, the accessory lock buckle (41) can move out of the anti-rotation groove (42).

9. The hair dryer according to claim 7, characterized in that The anti-rotation groove (42) is a tapered groove that matches the tapered portion (411).

10. A hair dryer, characterized in that: It comprises a main unit (1), an accessory (2), a position limiting component (3) and a rotation-stopping component (4); wherein, The limiting assembly (3) comprises a connecting head (31) and a limiting groove (32); wherein, The connector (31) is arranged on the accessory (2), and finite planes (311) are provided at both ends of the connector (31) along a first direction, wherein the first direction is the center line of the host (1); The limiting groove (32) is provided on the host (1), and the limiting groove (32) comprises a limiting channel (321) and a limiting portion (322); wherein, The limiting channel (321) can accommodate the connector (31) to pass through the limiting portion (322), and the connector (31) moves in a first direction and along the circumference of the main unit (1) when passing through the limiting channel (321); The two side walls of the limiting portion (322) along the first direction are in contact and fit with the two limiting planes (311) in a one-to-one correspondence; The anti-rotation component (4) can connect the main unit (1) and the accessory (2) when the connecting head (31) is located at the limiting portion (322) to limit the rotation of the accessory (2) relative to the main unit (1).

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