CN214401586U

CN214401586U - Hair drier

Info

Publication number: CN214401586U
Application number: CN202022919394.4U
Authority: CN
Inventors: 喻学锋; 段风伟
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2020-09-29
Filing date: 2020-12-08
Publication date: 2021-10-15
Anticipated expiration: 2030-12-08
Also published as: CN214737695U; CN114319209A; CN114319210A

Abstract

The application provides a hair dryer, which comprises an operating handle; the air inlet cover is provided with a plurality of shield holes; an air duct portion; the axial fan is arranged in the air duct part; a motor; the hair drier also comprises a support piece extending along the longitudinal direction, the support piece is connected with the air inlet cover through a first end, and the support piece is connected with the operating handle through a second end; the projection of the first end on the rotating surface formed by the rotation of the axial flow fan along the longitudinal extension direction of the support member is always positioned within the outer contour range of the rotating surface of the axial flow fan, and the cross section area of the air inlet cover is smaller than 13300mm²The air inlet cover is provided with a plug-in part, the blower further comprises a first connecting structure, and the first end of the supporting piece is connected with the air inlet cover through the first connecting structure; the orthographic projection of the first connecting structure on the rotating surface is not basically coincident with the orthographic projection of the shield hole on the rotating surface. The application provides a hair-dryer compact structure, and promote user's use and feel.

Description

Hair drier

Technical Field

The present application relates to an electric tool, and more particularly to a hair dryer.

Background

The blower is a more conventional electric tool and can be used for sweeping fallen leaves, road surface dust, accumulated water, accumulated snow, forest fire extinguishment and the like. The hair dryer may generally include: the fan comprises a shell, an operating handle formed on the shell, a motor contained in the shell, a fan driven by the motor to operate, a duct positioned at the front end of the shell, a flow guide mechanism arranged in the duct and a blowing pipe connected to the front end of the duct. The working principle is roughly as follows: the motor drives the fan to operate to generate airflow, and the airflow is guided by the guide mechanism and then blown out through the front end opening of the blowing pipe. The user operates the operating handle with a hand to aim the front end of the blowpipe at a target object (for example, fallen leaves, dust, accumulated water, snow, flames, etc.), and the air current is blown toward the target object.

In the conventional hair dryer on the market, the length of the air duct portion is mainly represented by that the air duct inlet is arranged at the final end area of the hair dryer, and the operation handle and/or the battery pack are close to the air duct inlet at the rear end, so that the length of the air duct portion is basically equal to the length of the hair dryer in the longitudinal direction. However, on the one hand, the longer length of the air duct portion causes the resistance of the air flow generated by the fan to increase when the air blowing pipe flows through, and further causes the loss of the air flow speed; on the other hand, it results in a heavy machine. In order to minimize the air flow speed loss and achieve light weight of the machine, one solution is to shorten the length of the air duct portion, thereby reducing the volume of the air duct, but this will bring new challenges to the machine operation comfort and the machine performance.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that exists among the prior art, this application provides a hair-dryer, can reduce the whole volume of hair-dryer, promotes user's use and feels.

In order to achieve the above object, the technical solution provided by the present application is as follows:

a hair dryer, comprising: an operating handle for holding by a user;

the air inlet cover is provided with a plurality of cover holes for air flow to pass through;

the air duct part is provided with an axial air inlet communicated with the outside, the air inlet cover is connected to the axial air inlet, and the axial air inlet is communicated with the shield hole;

an axial fan disposed in the air duct portion;

the motor is used for driving the axial flow fan to rotate so as to form air flow;

the hair drier also comprises a support member extending along the longitudinal direction, the support member is provided with a first end and a second end which are opposite to each other in the longitudinal direction, the support member is connected with the air inlet cover through the first end, the support member is connected with the operating handle through the second end, and the orthographic projection of the first end on a rotating plane formed by the rotation of the axial flow fan along the longitudinal extension direction of the support member is always positioned within the outer contour range of the rotating plane of the axial flow fan;

the hair drier also comprises a battery pack mounting part which is detachably combined with a battery pack for supplying power to the motor, and the battery pack mounting part is arranged at the second end close to the supporting part;

in the direction vertical to the longitudinal direction, the cross section area of the air inlet cover is less than 13300mm²The air inlet cover is provided with an inserting part which extends for a preset distance in the extending direction of the supporting part, and the shield holes are circumferentially distributed on the periphery of the inserting part;

the hair drier also comprises a first connecting structure, and the first end of the supporting piece is locked and connected with the inserting part of the air inlet cover through the first connecting structure; along the longitudinal extension direction of the support piece, the orthographic projection of the first connecting structure on the plane of the rotating surface is basically not coincident with the orthographic projection of the shield hole on the plane of the rotating surface.

In one embodiment, the insertion part is configured as an insertion hole, and the first connecting structure includes a positioning hole disposed on an inner wall of the insertion hole and a positioning member disposed on the supporting member, wherein the positioning member has a locking state forming a snap-fit connection with the inner wall of the positioning hole to limit the supporting member from being withdrawn from the insertion part backwards.

In one embodiment, in the locked state, an outer contour of the positioning element extends radially outward beyond a contour of an inner wall surface of the positioning hole.

In one embodiment, the positioning element further has a natural state of keeping its shape inserted into the insertion part, and in the natural state, the positioning element is at a preset position corresponding to the positioning hole;

and, the positioning member is configured to change its shape in the locked state when subjected to an external force.

In one embodiment, the first connecting structure further includes a stopping portion disposed at a distal end of the insertion portion, and the stopping portion can abut against the first end of the supporting member to prevent the supporting member from moving forward from the insertion hole.

In one embodiment, the air intake shroud is configured to extend on a fan axis of the axial fan;

the projection area of the orthographic projection of the air inlet cover falling on the plane of the rotating surface along the longitudinal direction is S1;

an orthographic projection area S2 of the first end of the supporting piece falling on the plane of the rotating surface along the longitudinal direction;

wherein 6 is less than or equal to S1/S2 is less than or equal to 16.

In one embodiment, the air channel portion includes a main blowing pipe and an auxiliary blowing pipe communicated with the main blowing pipe, a gap for external air to enter the auxiliary blowing pipe is formed between the main blowing pipe and the auxiliary blowing pipe, the blower can be switched between a first operating mode for discharging air at a relatively high air speed and a relatively low air volume and a second operating mode for discharging air at a relatively low air speed and a relatively high air volume through the auxiliary blowing pipe,

the maximum rotating speed of the motor is 18000-35000 rpm, the weight of the blower is not more than 1.5kg when the blower is not connected with the battery pack, the maximum wind speed of the blower in the first working mode is 90-110 mph, the maximum wind volume of the blower in the second working mode is 350-500 cfm, and the working time of the battery pack is not less than 6 min.

In one embodiment, the operation handle includes a switch element at least partially exposed for a user to turn on and off the blower, an orthogonal projection of a center of gravity of the blower combined with the battery pack in the longitudinal direction on a plane perpendicular to the rotation plane is G ', an orthogonal projection of a foremost end of the switch element on a plane perpendicular to the rotation plane is K', and the orthogonal projection G 'is configured within a range of 100mm forward and backward from the orthogonal projection K'.

In one embodiment, the element connected to the first end of the support member is defined as a first weight mechanism, the element connected to the second end of the support member is positioned as a second weight mechanism, the distance between the orthographic projection of the center of gravity of the first weight mechanism on the plane perpendicular to the rotation plane and the orthographic projection G 'is L1, the distance between the orthographic projection of the center of gravity of the second weight mechanism on the plane perpendicular to the rotation plane and the orthographic projection G' is L2, the longitudinal length of the first weight mechanism in the longitudinal direction is between 420mm and 560mm, and the length of the support member exposed to the outside is configured to be between 100mm and 140mm in a range where the distance L2 is 60% to 80% of the distance L1.

In one embodiment, the battery pack is adapted to be connected to at least two different kinds of hand tools, the number of the battery packs is one, and the weight of the second weight mechanism is not more than 140% of that of the first weight mechanism and not less than 105% of that of the first weight mechanism.

the maximum rotating speed of the motor is 20000-38000 rpm, the weight of the blower is not more than 2kg when the blower is not connected with the battery pack, the maximum wind speed of the blower in the first working mode is 110-180 mph, the maximum wind volume of the blower in the second working mode is 420-650 cfm, and the working time of the battery pack is not less than 6 min.

In one embodiment, the operating handle includes a switch element at least partially exposed for a user to turn on and off the blower, the blower further includes a first battery pack and a second battery pack for supplying power to the motor, an orthogonal projection of a center of gravity of the blower combined with the battery packs in the longitudinal direction on a plane perpendicular to the rotation plane is G ', an orthogonal projection of a foremost end of the switch element on a plane perpendicular to the rotation plane is K', and the orthogonal projection G 'is disposed within a range of 70mm forward and backward from the orthogonal projection K'.

In one embodiment, the element connected to the first end of the support member is defined as a first weight mechanism, the element connected to the second end of the support member is defined as a second weight mechanism, the distance between the orthographic projection of the center of gravity of the first weight mechanism on the plane perpendicular to the rotation plane and the orthographic projection G 'is L1, the distance between the orthographic projection of the center of gravity of the second weight mechanism on the plane perpendicular to the rotation plane and the orthographic projection G' is L2, the longitudinal length of the first weight mechanism is between 480mm and 650mm, and the length of the support member exposed to the outside in the longitudinal extension direction of the support member is configured to be between 110mm and 135mm within a range that the distance L2 is 40% to 60% of the distance L1.

In one embodiment, the battery packs are adapted to be connected to at least two different kinds of handheld tools, the nominal output voltages of the first battery pack and the second battery pack are both greater than or equal to 20V and less than or equal to 40V, and the weight of the second weight mechanism is not greater than 250% of the weight of the first weight mechanism and not less than 150% of the weight of the first weight mechanism.

Has the advantages that:

the hair drier that this description embodiment provided is provided with support piece to connect casing and operating handle respectively through support piece, realize the separation of casing and operating handle, not only can reduce the volume of blowing pipe, can also keep the efficiency in blowing pipe wind channel. In addition, the first end of the support piece is used for being connected with the air inlet cover, and when the support piece is connected with the air inlet cover, the air inlet cover needs to be kept to have a certain air inlet area, so that the use performance of the hair dryer is not affected. The whole blower of this specification embodiment is less, uses more lightly.

Specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive labor.

FIG. 1 is a schematic diagram of a blower according to an embodiment of the present disclosure;

figure 2 is a top view of a blower provided in an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a schematic diagram illustrating a first end of a support member according to an embodiment of the present disclosure in an original state;

FIG. 5 is a schematic view of a deformed first end of a support member provided in an embodiment of the present disclosure;

fig. 6 is a schematic structural view of the supporting member provided in the embodiment of the present disclosure after being connected to the air inlet cover;

FIG. 7 is a schematic view of a center of gravity distribution of a blower according to an embodiment of the present disclosure;

figure 8 is a schematic view of the position of the center of gravity distribution of another blower provided in the embodiments of the present disclosure.

Description of reference numerals:

1. an air inlet cover; 102. positioning holes; 103. a plug-in part; 104. a shield aperture; 105. a stopper portion; 2. a housing; 21. an axial flow fan; 22. a motor; 23. an air duct portion; 231. an axial air inlet; 24. a flow guide cone; 25. a main blowpipe; 251. a main air outlet; 26. an auxiliary blowpipe; 261. a gap; 3. a support member; 301. a first end; 302. a second end; 303. a positioning member; 304. connecting holes; 305. a first surface; 306. a second surface; 307. a hole groove; 31. an auxiliary air duct; 4. an operating handle; 41. a positioning column; 42. a battery pack mounting portion; 43. a switching element; g', projecting the center of gravity of the blower; k', projection of the switching element; m, the position of the center of gravity of the first weight mechanism; J. the position of the center of gravity of the second weight mechanism.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments, it should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope, and after reading the present invention, the modifications of the various equivalent forms of the present invention by those skilled in the art will fall within the scope defined by the present application.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be mechanically or electrically connected, directly or indirectly through intervening elements, or through both elements. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Also, in the description of the present specification, "a plurality" means two or more unless otherwise specified.

A hair dryer according to an embodiment of the present invention will be explained and explained with reference to fig. 1 to 8. It should be noted that, for convenience of description, like reference numerals denote like parts in the embodiments of the present invention. And for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments, and the descriptions of the same components may be mutually referred to and cited.

Fig. 1 and 2 are schematic structural views of a blower provided in an embodiment of the present disclosure. The hair dryer includes: an operating handle for holding by a user; the air inlet cover 1 is provided with a plurality of cover holes 104 for air flow to pass through, an air duct part 23 and an axial flow fan 21 arranged in the air duct part 23; a motor 22. The motor 22 is connected to the axial flow fan 21, and the motor 22 can drive the axial flow fan 21 to rotate to generate an air flow and guide the air flow out through the air duct portion 23.

The motor 22 may be any one of a dc motor, an ac motor, or a dc brushless motor. A battery pack (not shown) is mounted on the blower for supplying electric power to the motor 22. In the hair dryer provided in the embodiment of the present specification, the battery pack is mounted on the operation handle 4 for the user to hold, and the switch element 43 is provided on the operation handle 4, and the switch element 43 is electrically connected to the motor 22 for controlling the on and off of the motor 22.

The motor 22 may be directly connected to the axial flow fan 21 through a motor shaft to drive the axial flow fan 21 to rotate. The motor 22 may also be indirectly connected to the axial flow fan 21, for example, a transmission mechanism is disposed between a motor shaft of the motor 22 and the axial flow fan 21, and the motor 22 indirectly drives the axial flow fan 21 to rotate through the transmission mechanism. The type of the transmission mechanism is not particularly limited.

The present description provides a hair dryer having a longitudinal extension comprising a casing 2, a motor 22 and operating components. The casing 2 includes an air channel portion 23 extending substantially in the longitudinal direction, and the air inlet cover 1 is communicated with the air channel portion 23, and the working component includes an axial flow fan 21 disposed in the air channel portion 23.

The air duct portion 23 is a hollow tubular body having an extending axis, and has two opposite ends in the extending direction, one end is an axial air inlet 231 communicated with the shield hole 104 of the air inlet shield 1, and the other end is an air outlet communicated with the outside. As shown in fig. 1 and 2, the air channel portion 23 includes main blowing pipes 25 extending substantially in the longitudinal direction, and the number of the main blowing pipes 25 may be one and only one; of course, the main blowing pipe 25 may be a blowing pipe with a complete blowing function formed by combining two or more sections of pipe bodies. As shown in fig. 1, for convenience of description, in the present specification, the direction in which the airflow is guided out from the air channel portion 23 is defined as "front", and the direction opposite to the "front" is defined as "rear".

The main blowing pipe 25 is mounted at the front end of the casing 2, and when the user holds the operation handle 4 in a standing posture, the air outlet of the main blowing pipe 25 is naturally in a state of facing the ground, that is, the air outlet of the main blowing pipe 25 is closer to the object to be purged, as compared with the case where the main blowing pipe 25 is mounted at the rear end of the casing 2. Thus, the entire length of the air channel portion 23 can be shortened. Thus, the flow resistance of the air flow in the air duct portion 23 is reduced, and the whole machine can have a smaller volume.

In order to facilitate a better channelling out of the air flow generated by the axial fan 21, the hair dryer generally also comprises a duct arranged inside the air channel portion 23, which duct may be located between the axial fan 21 and the main blowing pipe 25. Within the duct there may be arranged a deflector means for directing the airflow towards the main blowing pipe 25. The guide mechanism may include a guide cone 24 and stationary blades, and the guide cone 24 is disposed substantially along the flow direction of the airflow and is located at the center of the extending axis of the air channel portion 23. The stator blades are arranged between the guide cone 24 and the duct, an airflow flowing space is formed between the shell of the guide cone 24 and the duct, the stator blades are arranged in the flowing space, the number of the stator blades is multiple, the stator blades are distributed at intervals along the circumferential direction, and airflow flows at intervals between every two adjacent stator blades.

The axial flow fan 21 includes a hub and blades circumferentially arranged on the periphery of the hub, and the blades of the axial flow fan 21 rotate around the axis of the fan to form a rotating surface. The plane of rotation is arranged perpendicular to the fan axis, and in this description is arranged perpendicular to the longitudinal extension of the support 3.

As shown in fig. 2, the supporting member 3 may be a rod or a tube extending lengthwise. The support 3 has a first end 301 and a second end 302 opposite to each other in the longitudinal direction, and the first end 301 and the second end 302 may be opposite ends in the longitudinal extension direction of the support 3. Wherein, the first end 301 may be a front end of the supporting member 3, and the second end 302 may be a rear end of the supporting member 3. The support member 3 can be connected to the air inlet cover 1 through the first end 301 so as to be connected to the housing 2, and the support member 3 is connected to the operating handle 4 through the second end 302.

As shown in fig. 6, the air inlet cover 1 is integrally of a cylindrical structure, both ends of the cylindrical structure (i.e., the front end and the rear end of the cylindrical structure) are open ends, the front end of the cylindrical structure is connected with the casing 2, and the rear end of the cylindrical structure is connected with the supporting member 3. The front end of the cylinder structure and the casing 2 can be connected through bolts, threads can be arranged at the front end of the cylinder structure, threaded connection portions are arranged on the casing 2 and fixedly connected through the threads, or the fixing can be achieved through modes such as fastening, screw connection and welding. The axial flow fan 21 can form a negative pressure region in its upstream region when driven to rotate by the motor 22. When the outside air enters the casing 2 through the air inlet cover 1, the air flows along the air inlet direction toward the axial flow fan 21 due to the negative pressure zone, and forms an air flow.

The air inlet cover 1 has a plurality of cover holes 104 for passing air therethrough for introducing the external air into the axial air inlet 231 of the air duct portion 23. As shown in fig. 1 and 2, when the support member 3 is connected to the air inlet cover 1 through the first end 301, a projection of the first end 301 on a rotating plane formed by the rotation of the axial flow fan 21 along a longitudinal extension direction of the support member is always located within an outer contour range of the rotating plane of the axial flow fan 21. Because axial fan 21 is installed in casing 2 to support piece 3 can not be located the outside of casing 2 in its longitudinal direction of extension, makes the hair-dryer overall shape comparatively regular, simple structure, portable and operation.

Since the support element 3 is connected within the outer contour of the intake hood 1, it inevitably occupies a part of the intake area of the intake hood 1. The air inlet volume of the air inlet cover 1 is influenced to a certain extent, the radial section area of an air inlet channel formed between the air inlet cover 1 and the support piece 3 is in a reasonable range, so that the air inlet volume of the hair drier is ensured, meanwhile, air airflow can stably enter and flow through a fan area to form high-speed and high-pressure airflow, and the performance of the hair drier is effectively ensured. Specifically, in the present embodiment, the air inlet cover 1 is configured to extend on the fan axis of the axial fan 21, the projected area of the orthographic projection of the air inlet cover 1 falling on the plane of the rotation plane in the longitudinal direction is S1, and the projected area of the orthographic projection of the first end 301 of the supporting member 3 falling on the plane of the rotation plane in the longitudinal direction is S2, wherein 6 ≦ S1/S2 ≦ 16. Preferably, 8. ltoreq. S1/S2. ltoreq.12.

In order to ensure the requirement of air inlet to the maximum extent, the end surface area of the first end 301 of the supporting member 3 is prevented from being too large to influence the air inlet amount. In the present embodiment, the cross-sectional area of the first end 301 of the support member 3 in the vertical direction is not more than 1256mm²Not less than 314mm²Preferably, the cross-sectional area of the first end 301 of the support member 3 in the vertical direction is not more than 920mm²Not less than 616mm²(ii) a The cross-sectional area is too big, will influence intake and complete machine lightweight absolutely, and the cross-sectional area undersize supports wind channel and battery package around owing to need relying on support piece 3, and support piece 3's reliability can be poor.

Further, since the hair dryer is basically operated by a user holding the machine, for a handheld device, the user may experience arm fatigue during long-term holding operations, especially for a single-handed handheld device. Thus, achieving roughly comparable performance, the overall machine can be substantially compact in volume and weight, which has been a challenge. In the embodiment, the size of the cross section of the superposed air duct part 23 is reduced through the ingenious short air duct design, so that the volume and the weight of the whole machine are remarkably changed under the condition that the longitudinal size and the radial size are both shortened. The air inlet cover 1 is connected with the axial air inlet 231 of the air duct portion 23, so that the cross-sectional size of the air duct portion 23 is reduced, and the cross-sectional size of the air inlet cover 1 is inevitably reduced. Specifically, the air inlet cover 1 includes a first end connected to the axial air inlet 231, and a second end opposite to the first end. In the vertical direction, the air inlet cover 1 connected with the axial air inlet 231 influences the radial size of the whole machine, and the cross-sectional area of the first end of the air inlet cover 1 is smaller than 13300mm²Preferably, the cross-sectional area of the first end of the wind shield 1 in the vertical direction is not less than 3800mm²Not greater than 11300mm²。

That is, in one embodiment, the air inlet cover 1 is approximately circular arc-shaped, the diameter is 110mm, and the cross-sectional area of the support member 3 in the radial direction is 907mm²Namely, the ratio of the projected area S1 of the orthographic projection of the air inlet cover 1 along the longitudinal direction on the plane of the rotating surface to the projected area S2 of the orthographic projection of one end of the air inlet cover 1 connected with the supporting piece 3 along the longitudinal direction on the plane of the rotating surface is about 10.47.

Aiming at the layout of the 'thin' air channel, the connection and fixing structure of the air inlet cover 1 and the support piece 3 needs to be considered, so that air inlet does not need to be shielded as much as possible, and the loss of air inlet volume is further reduced. Specifically, in some embodiments, as shown in fig. 3, the air inlet cover 1 is provided with a plug portion 103 extending in the longitudinal direction for a predetermined distance, and the cover holes 104 are circumferentially distributed on the periphery of the plug portion 103. The hair drier also comprises a first connecting structure, the first end 301 of the supporting piece 3 is in locking connection with the plug-in hole channel of the air inlet cover 1 through the first connecting structure, and the orthographic projection of the first connecting structure, which falls on the plane of the rotating surface of the axial flow fan 21 along the extending direction of the supporting piece 3, is basically not overlapped with the orthographic projection of the shield hole 104, which falls on the plane of the rotating surface along the extending direction of the supporting piece 3. On the whole, when the first end of the supporting member 3 is assembled to the inserting portion 103, the first connecting structure is located at the inner ring of the air inlet cover 1, and the shield hole 104 is located at the outer ring of the air inlet cover 1, which are not interfered with each other and are not shielded from each other. Therefore, when the air inlet cover 1 is matched and connected with the supporting piece 3, the first connecting structure can not occupy the area of the protective cover hole 104, and the air inlet amount can not be influenced.

It should be noted that the substantial misalignment herein shall include a maximum linear dimension of the projection of the first coupling structure on the plane of rotation being within 5mm of the projection of the shroud aperture 104. Further, taking the screw fastening method as an example, that is, the screw is inserted from the outer edge of the air inlet cover 1 and connected to the support 3, the screw occupies a large size in the radial direction, obviously sacrifices part of the air inlet area, and the installation process is more complicated.

The plug part 103 is designed as a hollow plug channel, which can be round, oval or square in cross section in a direction perpendicular to the longitudinal extension of the support element 3. The first end 301 of the support member 3 can extend into the plugging hole for a distance, so that the joint area between the support member 3 and the air inlet cover 1 is larger, and the connection strength between the support member 3 and the air inlet cover 1 can be improved. Because the grafting pore has certain extension length in tubular structure to can wrap up support piece 3 along support piece 3's circumference, make support piece 3 and air inlet cover 1's joint strength and stability better.

In some embodiments, the first connecting structure includes a mating member disposed on the supporting member 3 and a locking member disposed on the inserting portion 103. Wherein the locking member may be defined as a positioning hole 102 on an inner wall of the insertion part 103, and the mating member may be a shape-adjustable positioning member 303 disposed near an outer wall of the first end of the supporting member 3 or disposed at the first end of the supporting member 3. The positioning member 303 has a locking state of engaging with the inner wall of the positioning hole 102, and in the locking state, the outer contour of the positioning member 303 radially exceeds the outer contour of the inner wall of the positioning hole 102 to limit the support member 3 from coming out of the insertion hole. Specifically, in some embodiments, the positioning member 303 has a natural state (see fig. 4) in which its shape is maintained to be inserted into the insertion hole, and a locking state (see fig. 6) in which its shape is changed when it is subjected to an external force. In a natural state, the positioning element 303 is located at a preset position corresponding to the positioning hole 102, and in a locked state, an outer contour of the positioning element 303 radially exceeds an outer contour of an inner wall surface of the positioning hole 102 to limit the support element 3 from being pulled out from the insertion hole.

Specifically, the inner wall of the insertion part 103 is provided with a plurality of positioning holes 102, and the plurality of positioning holes 102 are distributed at intervals in the circumferential direction of the insertion part 103. The positioning member 303 is adjustable in shape, and may be a rigid structure or an elastic structure. In one embodiment, when the positioning member 22 is a rigid structure, such as an aluminum plate, and is switched from the natural state to the locking state, the operator is required to use the auxiliary member to push the positioning member 303 outward, so that the positioning member 303 changes shape and expands outward. When the positioning member 303 is of an elastic structure and is switched to the locking state in the natural state, the positioning member 303 releases the accumulated elastic potential energy, so that the positioning member 303 changes the shape and is stretched outwards.

It should be emphasized that, after the air inlet cover 1 and the supporting member 3 are connected, the first connecting structure is wholly located inside the air inlet cover 1, and the stability of the first connecting structure is ensured by containing the first connecting structure wholly in the air inlet cover 1. When the support member 3 is engaged with the air inlet cover 1, the positioning member 303 of the support member 3 is switched from the natural state to the locking state in the positioning hole 102 to limit the support member 3 from being removed from the insertion passage.

In other embodiments, the engaging element may be defined as a slot recessed from the wall surface of the supporting element 3, the slot may be an opening penetrating from inside to outside, or may be a semi-closed groove, and the locking element may be defined as a protrusion protruding inward from the inner wall surface of the insertion part 103 or the end edge of the insertion part 103, the protrusion may be a snap, and when the insertion part 103 is inserted into the inner cavity coupled to the supporting element 3, the air inlet cover and the supporting element 3 may form a locking engagement with the protrusion through the slot.

In some embodiments, the insertion part 103 has an open end for inserting the support 3, and the open end can be necked inward to form a necked structure, and the maximum outer size of the open end is larger than the maximum outer size of the support 3 at the positioning member 303. Specifically, when the first end of the supporting member 3 is engaged with the inserting portion 103, the first end can be easily inserted into the inserting portion 103 without using a large external force to insert the first end of the supporting member 3 into the inserting portion 103.

In this embodiment, the air inlet cover 1 is connected with the support piece 3, and the whole first connecting structure is located the inside of the air inlet cover 1, and the stability of the first connecting structure is ensured by integrally accommodating the first connecting structure in the air inlet cover 1. When the support member 3 is engaged with the air inlet cover 1, the positioning member 303 of the support member 3 is switched from the natural state to the locking state in the positioning hole 102 to limit the support member 3 from being removed from the insertion passage 103.

In some embodiments, the plugging hole 103 may have an open end for inserting the support 3, and the open end may be necked inward to form a necked structure, and a maximum outer size of the open end is larger than a maximum outer size of the support 3 at the positioning member 303. Specifically, when the first end 301 of the supporting member 3 is engaged with the plugging hole 103, the first end 301 of the supporting member 3 can be easily inserted into the plugging hole 103, and a large external force is not required to connect the first end 301 of the supporting member 3 into the plugging hole 103.

In some embodiments, as shown in fig. 5, the first connecting structure further includes a stopping portion 105 disposed at the end of the insertion hole 103, and the stopping portion 105 can abut against the end of the supporting member 3 to prevent the supporting member 3 from moving forward from the insertion hole 103. Specifically, the stopping portion 105 is a stopping step protruding toward the insertion hole 103. When the positioning element 303 is in the locked state, the first end 301 of the supporting element 3 abuts against the stopping step, and the first end 301 of the supporting element 3 is limited between the positioning hole 102 and the stopping step, so as to prevent the supporting element 3 from bouncing in the axial direction of the plugging hole 103. When the positioning member 303 of the supporting member 3 is clamped with the positioning hole 102, the first end 301 of the supporting member 3 can abut against the stopping step, so as to realize axial positioning.

In some embodiments, as shown in fig. 4 and 5, the supporting member 3 is provided with a hole 307 on an outer wall near the first end 301, the positioning member 303 is formed between the hole 307 and an end edge of the first end 301, and a distance between the hole 307 and the end edge of the first end 301 is configured to be equal to a distance between the positioning hole and the stopping step. In this embodiment, the positioning member 303 may be formed on the supporting member 3 by press forming, and the manufacturing method is relatively simple, and does not need to use other materials, so that the cost is lower.

In some embodiments, support 3 has a side surface enclosed between first end 301 and second end 302, the side surface including first surface 305 and second surface 306, first surface 305 and second surface 306 may be planar, and aperture 307 is disposed on first surface 305 and second surface 306. In this embodiment, the number of the positioning members 303 may be two. The plane may be a substantially smooth surface without major undulations as seen from the microstructure, which facilitates the production of the grooves 307 by providing a planar structure on the support 3. In addition, by arranging the plane structure on the support member 3, the rotation of the support member 3 in the circumferential direction can be limited, so as to ensure the stable connection between the support member 3 and the air inlet cover 1. The first surface 305 and the second surface 306 may be two opposing surfaces.

The support member 3 not only serves to connect the operating handle 4 and the housing 2, but also serves to support them. Therefore, the support material of the support 3 needs to have a certain strength. In some preferred embodiments, the supporting member 3 is made of an aluminum pipe, so that the supporting strength is certain, the supporting member made of the aluminum pipe is lighter and more portable, the portability is better, and preferably, the wall thickness of the supporting member 3 is 1-2 mm, so that the size is smaller, and the wind resistance in the auxiliary air duct 31 is favorably reduced.

The support 3 has a length configured such that the lower end of the air channel portion approaches the ground when the user holds the hair dryer in a standing posture. The length range of the support 3 can be selected according to the height of the user to select the support 3 with proper length. In some embodiments, the length of support 3 may be fixed for one blower configuration, but the length of support 3 may be different for different blowers. Therefore, the user can select or purchase the hair dryer with the corresponding model according to the height of the user. Alternatively, in other embodiments, a single hair dryer may be provided with at least two supports 3 of different lengths to meet the needs of users of different heights. In some other possible embodiments, the support 3 may be designed as a telescopic rod with adjustable length, so that the length of the support 3 can be adjusted to be suitable for the height of the user when the user with different height uses the telescopic rod.

As shown in fig. 1 and 5, the second end 302 of the supporting member 3 is fixedly connected to the operating handle 4, the operating handle 4 is provided with a second connecting structure, and the supporting member 3 is connected to the operating handle 4 through the second connecting structure. In some embodiments, the second connecting structure includes a connecting hole 304 disposed on the second end 302 of the supporting member 3 and a positioning pillar 41 disposed on the operating handle 4, and the second end 302 of the supporting member 3 and the operating handle 4 are fixed by the cooperation of the connecting hole 304 and the positioning pillar 41. Support piece 3 still can realize fixed connection through other suitable modes with operating handle 4, including threaded connection, buckle connection, screw connection, riveting, interference fit connection etc. detachable connection, also can include fixed connection such as welding, bonding, and this embodiment does not limit this.

The operating handle 4 is provided with a battery pack mounting portion 42 for detachable engagement with a battery pack for supplying power to the motor 22. In some embodiments, the battery pack mounting portion 42 is disposed near the second end 302 of the support member 3, and the insertion direction of the battery pack is perpendicular to the extending direction of the support member 3 or forms an acute angle. When the battery pack mounting portion 42 is mounted toward the rear end of the blower as viewed in the direction shown in fig. 1, on the one hand, it is possible to facilitate reduction in the size of the blower in the direction perpendicular to the lengthwise extending direction thereof, and reduction in the size in the height direction of the whole blower, so that the whole blower is more compact in structure. On the other hand, be favorable to the installation and the dismantlement of battery package, when needing to dismantle or change the battery package, need not to overturn the complete machine and come, can directly change at the rear end of hair-dryer, user experience nature is better.

On the one hand, the first end 301 of the support 3 occupies the effective ventilation area of the air inlet cover 1, so that a part of the air inlet area of the air inlet cover 1 is sacrificed. On the other hand, due to the layout of the 'thin' air duct, the air intake of the blower is inevitably greatly influenced. To compensate for the losses caused by the above-mentioned structural design, an auxiliary air flow can be delivered by the support 3. Specifically, as shown in fig. 1, the support 3 may be a hollow tubular structure having an auxiliary air duct 31, an air inlet communicated with the auxiliary air duct 31, and an air outlet. The airflow outlet communicates with the air duct portion 23, and the airflow inlet communicates with the external airflow, and forms an auxiliary airflow through the auxiliary air duct 31, which converges with the main airflow entering from the shroud hole 104 at the axial flow fan 21.

In some embodiments, the airflow outlet may be near the first end 301, for example, may be disposed at a lower portion of the first end 301, or the first end 301 may be open, for communicating the auxiliary air duct 31 with the cabinet 2, so that the airflow in the auxiliary air duct 31 can enter the cabinet 2 through the airflow outlet. The air inlet may be provided near the second end 302 and at an outer portion of the support 3 placed on the operating handle 4, or the air inlet may be provided near the second end 302 and at an inner portion of the support 3 placed on the operating handle 4, or the air inlet may be provided at an end of the second end 302. In this embodiment, when the airflow inlet is located at the end of the second end 302 or located at the inner portion of the support 3 and disposed on the operating handle 4, in order to introduce the external airflow into the auxiliary air duct 31 of the support 3, the operating handle 4 may be provided with a secondary air inlet communicated with the airflow inlet, and the secondary air inlet is used for communicating the external airflow and the auxiliary air duct 31. The motor 22 generates a negative pressure region near the first end of the support member 3 when operating, so that external air can be sucked into the auxiliary air duct 31 of the support member 3 through the air inlet, and an auxiliary air flow is formed in the support member 3. The air drawn into the auxiliary duct 31 is further accelerated, as shown by the arrow in fig. 1, and enters the cabinet 2 through the air flow outlet.

As shown in fig. 1, once the auxiliary air flow enters the casing 2, the auxiliary air flow can flow forward under the action of the axial flow fan 21 driven by the motor 22 to operate, and is converged at the axial flow fan 21 with the main air flow entering from the air inlet cover 1. The two air flows are converged and blown to the air outlet of the main blowing pipe 25 by the fan 21, so that the final blowing wind power is enhanced. Therefore, the supporting piece 3 is adopted to convey the auxiliary airflow, and on one hand, the effects of supplementing the airflow and enhancing the wind power can be achieved. On the other hand, the auxiliary air flow delivered from the supporting member 3 can be concentrated and flow through the motor 22 without dispersion, so that the motor 22 can be cooled better.

In this specification, the auxiliary air duct 31 and the internal passage of the motor 22 are in butt communication to form a motor cooling passage. Therefore, as long as the motor 22 is started to operate, the auxiliary airflow continuously circulates in the motor cooling channel, so as to perform uninterrupted air cooling operation on the motor 22. Furthermore, in order to reduce the foreign matters entering from the secondary air inlet as much as possible, a corresponding foreign matter blocking structure can be arranged at the secondary air inlet. For example, a screen may be provided at the secondary air inlet.

Further, in some embodiments, in order to compensate for the intake air, the air channel portion 23 includes a main blowing pipe 25 and an auxiliary blowing pipe 26 disposed in communication with the main blowing pipe 25. A gap 261 into which the external air stream enters the main blowing pipe 25 can be formed between the main blowing pipe 25 and the auxiliary blowing pipe 26. The hair dryer is capable of switching between a first mode of operation in which air is discharged at a relatively high air speed and relatively low air volume and a second mode of operation in which air is discharged at a relatively low air speed and relatively high air volume via the auxiliary barrel 26.

Specifically, one end of the main blowing pipe 25 forms a main air outlet 251, the other end of the main blowing pipe 25 is communicated with the shield hole 104 of the air inlet cover 1, the auxiliary blowing pipe 26 has an auxiliary air inlet communicated with the main air outlet 251 and a pipe orifice located at the front end of the auxiliary air inlet, the pipe orifice forms the air outlet, and a gap 261 is formed between the main air outlet 251 and the auxiliary air inlet, so that external air flow can enter the auxiliary blowing pipe 26 from the gap 261. The hair dryer has a first operation mode in which the outside air is introduced from the shroud hole 104 and blown out from the main outlet 251, and a second operation mode in which the outside air is introduced from the shroud hole 104 and blown out from the nozzle of the auxiliary blowing pipe 26. The blower is selectively operable in a first mode of operation or a second mode of operation.

Further, the auxiliary blowpipe 26 is movably connected to the main blowpipe 25. The articulated connection is understood to mean that the auxiliary blowers 26 can be detached from the main blowers 25 or that the auxiliary blowers 26 can be retracted a predetermined distance backwards. The user can freely select a matched mode to work according to the cleaning requirement.

Further, as shown in fig. 7 and 8, the operating handle 4 includes a switch element 43 at least partially exposed for a user to operate to control the on/off of the blower. When a user holds the hair dryer, the hair dryer integrally forms a lever structure taking a part held by the user as a fulcrum, two ends of the lever structure are respectively a battery pack and a machine core comprising the air inlet cover 1 and the air duct part 23, the part held by the user is close to a switch element 43, and the switch element 43 can be regarded as the fulcrum of the lever structure. For hand-held hair dryer products, users always want the weight cells to be concentrated in the gripping area to improve gripping comfort. In the conventional hair dryer, the weight units such as the motor and the battery pack are generally close to the grip portion, and the center of gravity is not particularly considered. For the layout of the 'short' air duct with the front air duct (the air duct is far away from the operating handle), on one hand, the core elements of the air duct part 23 are all close to the front and far away from the holding part; on the other hand, because the length of the supporting member 3 is longer, and the air inlet cover 1 and the air duct portion 23 also have a certain length, the center of gravity of the movement is far away from the switch element 43; the distance (arm) between the battery pack and the switching element 43 is relatively short; therefore, it is inevitable to relatively shift the center of gravity forward.

In some embodiments, as shown in fig. 7, the battery pack mounting portion 42 is disposed near the second end 302 of the support member 3, the number of battery packs for supplying power to the motor 22 may be one, the nominal output voltage of the battery packs is less than or equal to 20V, the capacity of the battery packs is 2 to 9Ah, and the maximum rotation speed of the motor 22 is 18000rpm to 35000 rpm. The blower does not weigh more than 1.8kg when no battery pack is attached. The maximum air speed of the blower in the first working mode is between 90mph and 110mph, the maximum air quantity in the second working mode is between 350cfm and 500cfm, and the working time of the battery pack is not less than 6 min. Specifically, the nominal output voltage of a single battery pack is 20V, the battery pack capacity is 4Ah, the maximum rotation speed of the motor 22 is 20000 rpm-30000 rpm, and the weight of the blower when the battery pack is not connected with the blower is not more than 1.5 kg. The maximum air speed of the blower in the first working mode is between 90mph and 100mph, the maximum air quantity in the second working mode is between 380cfm and 480cfm, and the working time of the battery pack is not less than 10 min.

Further, as shown in fig. 7, in the longitudinal extension direction of the support 3, an orthogonal projection of the center of gravity of the hair dryer with the battery pack incorporated therein on a plane perpendicular to the rotation plane of the axial flow fan 21 is G ', an orthogonal projection of the front end of the switching element 43 near the support 3 on a plane perpendicular to the rotation plane of the axial flow fan 21 is K', and the orthogonal projection G 'is disposed within a range of 100mm forward and backward from the orthogonal projection K', and preferably, the weight of the hair dryer without the battery pack attached thereto is not more than 1.5kg, and the projection G 'is disposed within a range of 50mm forward and backward from the projection K'. By mounting the battery pack on the rear side of the whole machine, the position of the center of gravity G 'of the blower (the center of gravity G' is herein understood to be the projection of the center of gravity of the whole machine in the state of being fitted with the battery pack) is balanced, and since the weight of the blower itself in this embodiment is low, the fatigue of the user holding the machine has been greatly reduced in terms of weight.

Furthermore, in order to make the center of gravity of the whole machine as close to the operating handle 4 as possible, on one hand, the weight of the movement part is reduced, the operating comfort of the whole machine is adjusted, on the other hand, the length of the supporting piece 3 is reduced, and the moment arm between the movement and the switch element 43 is shortened. However, when the length of the supporting member 3 exposed outside is too short, the whole length of the air duct connected to the first end 301 of the supporting member 3 is inevitably longer, the miniaturization of the whole machine is affected by the increase of the air duct, and the longer the air duct is, the larger the air flow loss is, the performance of the whole machine is affected.

Further, as shown in fig. 7, the element connected to the first end 301 of the support member 3 is defined as a first weight mechanism, the element connected to the second end 302 of the support member 3 is positioned as a second weight mechanism, the projection of the center of gravity of the first weight mechanism on the plane perpendicular to the rotation plane of the axial flow fan 21 is at a distance L1 from the projection G ', the projection of the center of gravity of the second weight mechanism on the plane perpendicular to the rotation plane of the axial flow fan 21 is at a distance L2 from the projection G', and in the longitudinal extension direction of the support member 3, the length of the distance L2 is 60% to 80% of the distance L1 to expose the support member 3 to the outside is configured to be in the range of 100 to 140mm, and the longitudinal length of the first weight mechanism is in the range of 420mm to 560 mm. The distance L1 and the distance L2 are distances between orthographic projections of the blower in a flat state on a plane perpendicular to the plane of rotation.

Specifically, the first weight mechanism comprises an air inlet cover 1, a motor 22 and a casing 2 (comprising an air channel part 23 and an axial flow fan 21); the second weight mechanism includes: an operating handle 4 and a battery pack. The length of the support member 3 exposed to the outside is the length of the support member 3 removed from the portion combined with the intake cover 1 and the operating handle 4. Thus, the overall length of the duct associated with the first end 301 of the support 3 is relatively short. In this way, the flow resistance of the air flow in the air channel portion 23 is reduced, and the maximum radial dimension of the air channel portion 23 can be shortened. Under the condition that the length and the maximum radial dimension of the air duct part 23 are both shortened, the volume of the air duct part 23 is greatly reduced, and the miniaturization of the whole machine is realized.

In this embodiment, the battery pack can be adapted to be connected to at least two different kinds of hand tools, such as a battery-type hand tool, for example, a lawn mower, a chain saw, a lawn mower, a hair dryer, a suction blower, an electric drill, an electric saw, a pruner, a pressure washer, and the like, and the second weight mechanism has a weight of not more than 140% and not less than 105% of the first weight mechanism. For example, after the entire machine is miniaturized, the weight of the first weight mechanism is about 0.7kg, and the weight of the second weight mechanism is about 0.94 kg.

In other embodiments, as shown in fig. 8, the hair dryer further includes a first battery pack and a second battery pack for supplying power to the motor 22, wherein the nominal output voltage of each of the first battery pack and the second battery pack is greater than or equal to 20V and less than 56V, the capacity of each battery pack is 2-9 Ah, the weight of the hair dryer without the battery pack is not more than 2kg, and the maximum rotation speed of the motor 22 is 20000 rpm-38000 rpm. The maximum air speed of the blower in the first working mode is 110-180 mph, the maximum air quantity in the second working mode is 420-650 cfm, the working time of the battery pack is not less than 6min, and preferably, the working time of the battery pack is not less than 8 min. Specifically, the nominal output voltage of the first battery pack and the nominal output voltage of the second battery pack are both 20V, the capacity of the battery packs is 4Ah, the weight of the blower when the battery packs are not connected is not more than 1.8kg, and the maximum rotating speed of the motor 22 is 20000 rpm-38000 rpm. The maximum air speed of the blower in the first working mode is 130-165 mph, the maximum air quantity in the second working mode is 480-630 cfm, and the working time of the battery pack is not less than 10 min.

In the longitudinal extension direction of the support 3, an orthogonal projection of the center of gravity of the hair dryer incorporating the battery pack on a plane perpendicular to the rotational plane of the axial flow fan 21 is G ', an orthogonal projection of the front end of the switching element 43 close to the support 3 on a plane perpendicular to the rotational plane of the axial flow fan 21 is K', and the orthogonal projection G 'is arranged within a distance of 70mm forward and backward from the orthogonal projection K'. Preferably, the forward projection G 'is configured within 50mm of the forward-backward distance from the forward projection K'. The orthographic projection G 'of the gravity center position of the whole machine on a plane vertical to the rotating surface of the axial flow fan 21 is positioned 35mm forward of the orthographic projection K'. By mounting the battery pack on the rear side of the whole machine, the position of the center of gravity G 'of the blower (the center of gravity G' is herein understood to be the projection of the center of gravity of the whole machine in the state of being fitted with the battery pack) is balanced, and since the weight of the blower itself in this embodiment is low, the fatigue of the user holding the machine has been greatly reduced in terms of weight.

As shown in fig. 8, the element connected to the first end 301 of the support member 3 is defined as a first weight mechanism, the element connected to the second end 302 of the support member 3 is defined as a second weight mechanism, the distance between the orthographic projection of the center of gravity of the first weight mechanism on the plane perpendicular to the rotation plane of the axial flow fan 21 and the orthographic projection G 'is L1, the distance between the orthographic projection of the center of gravity of the second weight mechanism on the plane perpendicular to the rotation plane of the axial flow fan 21 and the orthographic projection G' is L2, the length of the support member 3 exposed to the outside is arranged within a range of 110 to 135mm in the longitudinal extension direction of the support member 3 in a range of 40 to 60% of the distance L1 by the distance L2, and the longitudinal length of the first weight mechanism is between 480mm and 650 mm.

In this embodiment, the battery pack can be adapted to be connected to at least two different kinds of hand tools, such as a battery-type hand tool, for example, a lawn mower, a chain saw, a lawn mower, a hair dryer, a suction blower, an electric drill, an electric saw, a pruner, a pressure washer, and the like, and the second weight mechanism has a weight of not more than 250% and not less than 150% of the weight of the first weight mechanism. For example, after the entire machine is miniaturized, the weight of the first weight mechanism is 0.88kg, and the weight of the second weight mechanism is 1.960 kg.

The above embodiments are merely illustrative of the technical concepts and features of the present application, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present application and implement the present application, and not to limit the protection scope of the present application. All equivalent changes and modifications made according to the spirit of the present application should be covered in the protection scope of the present application.

All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.

A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes.

Claims

1. A hair dryer, comprising:

an operating handle for holding by a user;

an axial fan disposed in the air duct portion;

the hair drier is characterized by further comprising a support member extending along the longitudinal direction, wherein the support member is provided with a first end and a second end which are opposite to each other in the longitudinal direction, the support member is connected with the air inlet cover through the first end, the support member is connected with the operating handle through the second end, and the orthographic projection of the first end, falling on a rotating plane formed by the rotation of the axial flow fan along the longitudinal extension direction of the support member, is always positioned within the outer contour range of the rotating plane of the axial flow fan;

2. The hair dryer of claim 1, wherein the insertion part is configured as an insertion duct, and the first connecting structure comprises a positioning hole formed in an inner wall of the insertion duct and a positioning member provided on the support member, wherein the positioning member has a locking state in which the positioning member is engaged with the inner wall of the positioning hole to restrict the support member from being withdrawn from the insertion part backward.

3. The blower of claim 2, wherein in the locked condition, an outer profile of the positioning member extends radially outward beyond a profile of an inner wall surface of the positioning aperture.

4. The hair dryer of claim 2, wherein the positioning member further has a natural state of maintaining its shape inserted into the insertion part, and in the natural state, the positioning member is in a preset position corresponding to the positioning hole;

5. The hair dryer of claim 2, wherein the first connecting structure further comprises a stopping portion disposed at a distal end of the insertion portion, the stopping portion being capable of abutting against the first end of the support member to prevent the support member from moving forward from the insertion opening.

6. The blower of claim 1, wherein the intake shroud is configured to extend on a fan axis of the axial fan;

wherein 6 is less than or equal to S1/S2 is less than or equal to 16.

7. The hair dryer of claim 1, wherein the air channel portion includes a main blower pipe and an auxiliary blower pipe provided in communication with the main blower pipe, a gap for an external air flow to enter the auxiliary blower pipe is formed between the main blower pipe and the auxiliary blower pipe, the hair dryer is capable of switching between a first operation mode of discharging air at a relatively high air speed and a relatively low air volume and a second operation mode of discharging air at a relatively low air speed and a relatively high air volume through the auxiliary blower pipe,

8. The hair dryer of claim 7, wherein said operating handle includes a switch element at least partially exposed for a user to turn on and off said hair dryer, an orthogonal projection of a center of gravity of the hair dryer incorporating said battery pack in said longitudinal direction on a plane perpendicular to said plane of rotation is G ', an orthogonal projection of a foremost end of said switch element on a plane perpendicular to said plane of rotation is K', and said orthogonal projection G 'is arranged within a distance of 100mm forward and backward from said orthogonal projection K'.

9. The hair dryer of claim 8, wherein the element connected to the first end of the support member is defined as a first weight mechanism, the element connected to the second end of the support member is positioned as a second weight mechanism, a distance between an orthographic projection of a center of gravity of the first weight mechanism on a plane perpendicular to the rotation plane and the orthographic projection G 'is L1, a distance between an orthographic projection of a center of gravity of the second weight mechanism on a plane perpendicular to the rotation plane and the orthographic projection G' is L2, a longitudinal length of the first weight mechanism in the longitudinal direction is between 420mm and 560mm, and a length of the support member exposed to the outside is configured to be between 100mm and 140mm in a range where the distance L2 is 60% to 80% of the distance L1.

10. The hair dryer of claim 9, wherein said battery pack is adapted to be connected to at least two different kinds of hand tools, said battery pack is one in number, and said second weight mechanism has a weight not greater than 140% of said first weight mechanism and not less than 105% of said first weight mechanism.

11. The hair dryer of claim 1, wherein the air channel portion includes a main blower pipe and an auxiliary blower pipe provided in communication with the main blower pipe, a gap for an external air flow to enter the auxiliary blower pipe is formed between the main blower pipe and the auxiliary blower pipe, the hair dryer is capable of switching between a first operation mode of discharging air at a relatively high air speed and a relatively low air volume and a second operation mode of discharging air at a relatively low air speed and a relatively high air volume through the auxiliary blower pipe,

12. The hair dryer of claim 11, wherein said operating handle includes a switch element at least partially exposed for a user to turn on and off said hair dryer, said hair dryer further comprising a first battery pack and a second battery pack for supplying power to said motor, an orthogonal projection of a center of gravity of the hair dryer incorporating said battery packs in said longitudinal direction on a plane perpendicular to said plane of rotation is G ', an orthogonal projection of a foremost end of said switch element on a plane perpendicular to said plane of rotation is K', and said orthogonal projection G 'is arranged within a range of 70mm forward and backward from said orthogonal projection K'.

13. The hair dryer of claim 12, wherein the element connected to the first end of the support member is defined as a first weight mechanism, the element connected to the second end of the support member is defined as a second weight mechanism, a distance between an orthographic projection of a center of gravity of the first weight mechanism on a plane perpendicular to the rotation plane and the orthographic projection G 'is L1, a distance between an orthographic projection of a center of gravity of the second weight mechanism on a plane perpendicular to the rotation plane and the orthographic projection G' is L2, a longitudinal length of the first weight mechanism is between 480mm and 650mm, and a length of the support member exposed to the outside in a longitudinal extending direction of the support member is configured to be between 110mm and 135mm within a range of 40% to 60% of the distance L1 as a length of the distance L2.

14. The hair dryer of claim 13, wherein said battery packs are adapted to be connected to at least two different types of hand tools, said first battery pack and said second battery pack each have a nominal output voltage of 20V or more and 40V or less, and said second weight mechanism has a weight of 250% or less and 150% or less of said first weight mechanism.