CN217401295U - Air inlet assembly and fan with same - Google Patents

Abstract

The utility model provides an air inlet subassembly and have its fan, the air inlet subassembly includes: the air conditioner comprises a first shell and a second shell which are connected with each other, wherein a first air inlet is formed in the first shell, a second air inlet is formed in the second shell, and the first shell is provided with a covering position enabling the first air inlet to be covered and an air inlet position enabling the first air inlet to enter air; the first grating is arranged at the first air inlet in an angle adjustable manner; when the first shell is in the covering position, the first grille is in a closed state under the cooperation of the first grid and the fixed base; when the first shell is in the air inlet position, the first grille is in an initial opening state; and the second grating is arranged at the second air inlet in an angle adjustable mode, and the first grating is in driving connection with the second grating. Through the technical scheme provided by the utility model, can solve the higher technical problem of the driving cost of the grid drive mode among the prior art.

Description

Air inlet assembly and fan with same

Technical Field

The utility model relates to an air inlet technical field particularly, relates to an air inlet subassembly and have its fan.

Background

At present, a grid in the prior art is generally driven and controlled by a motor, a driving end of the motor is in driving connection with the grid, the motor is started to drive the grid to rotate, and the angle of the grid is controlled by controlling the rotation angle of the motor, so that the angle change of the grid is realized.

However, with such a driving form, the cost of the motor driving method is high, thereby increasing the overall manufacturing cost of the fan.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides an air inlet subassembly and have its fan to solve the higher technical problem of the driving cost of the grid drive mode among the prior art.

In order to achieve the above object, according to the utility model discloses an aspect provides an air inlet subassembly, include: the air inlet shell comprises a first shell and a second shell which are connected with each other, a first air inlet is formed in the first shell, a second air inlet is formed in the second shell, the first shell is adjustably mounted on the fixed base body in position, the first shell is provided with a covering position enabling the first air inlet to be covered and an air inlet position enabling the first air inlet to supply air, and the second shell protrudes out of the fixed base body; the first grating is arranged at the first air inlet in an angle adjustable manner; when the first shell is in the covering position, the first grid is in a closed state under the cooperation action of the first grid and the fixed base; when the first shell is in the air inlet position, the first grille is in an initial opening state; the second grating is arranged at the second air inlet in an angle-adjustable mode, and the first grating is in driving connection with the second grating so as to drive the second grating to be closed when the first grating moves to a closed state and drive the second grating to be opened when the first grating moves to an open state.

Further, the air inlet subassembly still includes: and the transmission input end of the transmission structure is connected with the first grating, and the transmission output end of the transmission structure is connected with the second grating.

Further, the transmission structure includes: the rotating part rotates along the fixed rotating shaft, the rotating part is provided with a first rotating part and a second rotating part, the first rotating part and the second rotating part are respectively positioned on two sides of the fixed rotating shaft, the first rotating part is connected with the first grating, and the second rotating part is connected with the second grating so as to drive the second grating to be opened or closed through the rotating part under the driving action of the first grating.

Further, the transmission structure further comprises: the driving end of the first resetting piece is connected with the first rotating part, and the resetting end of the first resetting piece forms a transmission input end; and/or the second reset piece, wherein the driving end of the second reset piece is connected with the second rotating part, and the reset end of the second reset piece forms a transmission output end.

Furthermore, the first grating comprises a plurality of first grating strips arranged at intervals along a first preset direction, the number of the first resetting pieces is multiple, the first resetting pieces and the first grating strips are arranged in a one-to-one correspondence manner, and each first resetting piece is connected with the corresponding first grating strip; the transmission structure further includes: the first connecting piece is connected with the first rotating portion, and the reset ends of the first reset pieces are connected with the first connecting piece, so that the reset ends of the first reset pieces are connected with the first rotating portion through the first connecting piece.

Furthermore, the second grating comprises a plurality of second grating strips arranged at intervals along a second preset direction, a plurality of second resetting pieces are arranged, the plurality of second resetting pieces and the plurality of second grating strips are arranged in a one-to-one correspondence manner, and each second resetting piece is connected with the corresponding second grating strip; the transmission structure further includes: and the second connecting piece is connected with the second rotating part, and the resetting ends of the second resetting pieces are connected with the second connecting piece, so that the resetting ends of the second resetting pieces are connected with the second rotating part through the second connecting piece.

Furthermore, a plurality of first grids are arranged on the first shell at intervals, a plurality of second grids are arranged on the second shell at intervals, the first grids and the second grids are arranged in a one-to-one correspondence mode, and each first grid is in driving connection with the corresponding second grid.

Furthermore, a first guide part is arranged on the first shell, and a second guide part matched with the first guide part is arranged on the fixed base body so as to guide the first shell to move to a covering position or an air inlet position under the matching of the first guide part and the second guide part.

Further, first casing is the arc casing, and first guide part is the arc rib, is provided with the arc wall with first casing looks adaptation on the fixed base member, is provided with in the arc wall with arc rib complex arc guide way, the arc guide way forms the second guide part.

Furthermore, the second shell is of a cylinder structure, the first shell is positioned at the bottom of the second shell, and the arc-shaped ribs are provided with a first end and a second end which are oppositely arranged; the first grating and the second grating are two, the two second gratings are respectively positioned at the first end and the second end, and the two second gratings are arranged at intervals along the extending direction of the arc-shaped ribs; the two first grids are respectively arranged opposite to the two second grids, and each first grid is respectively positioned on the same side with the corresponding second grid.

According to the utility model discloses a further aspect provides a fan, including the air inlet subassembly that the aforesaid provided.

Further, the fan further includes: the fan is arranged in the air inlet shell; the mounting seat forms a fixed base body; when the first shell of the air inlet shell is in the covering position, the first shell is matched with the mounting seat to cover the first air inlet; when the first casing of air inlet casing is in the air inlet position, first casing and mount pad dislocation are in order to dodge first air intake.

Use the technical scheme of the utility model, through the position state that changes first casing, can change the state of first grid, because first grid is connected with the drive of second grid for first grid can drive the motion of second grid. Specifically, when the first shell is in the covering position, the first grating is in a closed state under the matching action of the first grating and the fixed base body, air cannot enter the first air inlet, at the moment, the first grating can drive the second grating to be closed, and air cannot enter the second grating; when first casing was in the air inlet position, the dislocation action of first grid and fixed base member makes first grid resume to initial open mode down, and first air intake air, at this moment, first grid also can drive the second grid and open, and the second grid also can the air inlet. The air inlet subassembly in this embodiment need not set up extra motor structure, only needs the position state through changing first casing, just can change the state of first grid, and then has changed the state of second grid, has reduced construction cost, has also simplified the structure.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 illustrates a cross-sectional view of one direction of an air intake assembly provided in accordance with an embodiment of the present invention;

fig. 2 illustrates another directional cross-sectional view of an air intake assembly provided in accordance with an embodiment of the present invention;

fig. 3 shows a schematic structural view of the first housing of the air intake assembly provided according to an embodiment of the present invention in the covering position;

fig. 4 illustrates a front view of an air intake assembly provided in accordance with an embodiment of the present invention;

fig. 5 illustrates a left side view of an air intake assembly provided in accordance with an embodiment of the present invention;

fig. 6 shows a transmission schematic diagram of a transmission structure provided according to an embodiment of the present invention;

fig. 7 shows a schematic transmission principle diagram of a transmission structure provided according to an embodiment of the present invention;

fig. 8 shows a schematic structural diagram of the first casing of the air intake assembly provided according to the embodiment of the present invention in the air intake position;

fig. 9 shows a schematic diagram of the operation of the fan according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. an air inlet housing; 11. a first housing; 12. a second housing; 20. a first grid; 21. a first grid; 30. a second grid; 31. a second grid; 40. a transmission structure; 41. a rotating member; 411. a first rotating section; 412. a second rotating part; 42. a first reset member; 43. a second reset member; 44. a first connecting member; 45. a second connecting member; 46. fixing the rotating shaft; 50. a fan; 60. and (7) mounting a seat.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 8, the first embodiment of the utility model provides an air inlet subassembly, this air inlet subassembly includes air inlet casing 10, first grid 20 and second grid 30, air inlet casing 10 includes interconnect's first casing 11 and second casing 12, be provided with first air intake on the first casing 11, be provided with the second air intake on the second casing 12, first casing 11 position is installed on the solid fixed base body adjustably, first casing 11 has the air inlet position that makes first air intake be covered hide the position and make first air intake air, second casing 12 protrusion sets up in solid fixed base body. The first grille 20 is angularly adjustably disposed at the first air inlet; when the first casing 11 is in the covering position, the first grille 20 is in the closed condition under the cooperation with the fixed base; when the first housing 11 is in the air intake position, the first grill 20 is in an initial open state. The second grille 30 is arranged at the second air inlet in an angle-adjustable mode, the first grille 20 is in driving connection with the second grille 30 so as to drive the second grille 30 to be closed when the first grille 20 moves to the closed state, and drive the second grille 30 to be opened when the first grille 20 moves to the open state.

Specifically, in this embodiment, when the first housing 11 is in the covering position, the first housing 11 is matched with the fixing base to cover the first air inlet, and at this time, the first air inlet does not intake air; when first casing 11 is in the air inlet position, first casing 11 and fixed base member dislocation are in order to dodge first air intake to make first air intake can the air inlet. When the first grille 20 is in a closed state, the first grille 20 is used for closing the first air inlet; when the first grill 20 is in the open state, the first grill 20 is used to open the first air intake. "the second grille 30 is driven to close when the first grille 20 moves to the closed state, and the second grille 30 is driven to open when the first grille 20 moves to the open state" means that the second grille 30 is driven to move in the moving process of the first grille 20; wherein, when the first grill 20 is in the closed state, the second grill 30 is in the closed position closing the second air inlet; when the first grill 20 is in the open state, the second grill 30 is in the open position to open the second intake vent. The phrase "the first grill 20 is in the closed state by cooperation with the stationary base when the first housing 11 is in the covering position" means that the first grill 20 is moved to a position covered by the stationary base when the first housing 11 is in the covering position, so that the stationary base can be the first grill 20 in the closed state.

By adopting the air inlet assembly provided by the embodiment, the state of the first grille 20 can be changed by changing the position state of the first shell 11, and the first grille 20 can drive the second grille 30 to move due to the driving connection of the first grille 20 and the second grille 30. Specifically, when the first housing 11 is in the covering position, the first grille 20 is in the closed state under the cooperation of the fixed base, and the first air inlet does not supply air, and at this time, the first grille 20 also drives the second grille 30 to close, and the second grille 30 does not supply air; when the first casing 11 is located at the air inlet position, the first grille 20 is restored to the initial open state under the action of the dislocation of the first grille 20 and the fixed base body, the first air inlet supplies air, at this time, the first grille 20 drives the second grille 30 to open, and the second grille 30 supplies air. The air inlet assembly in the embodiment does not need to be provided with an additional motor structure, and only needs to change the position state of the first shell 11, so that the state of the first grating 20 can be changed, the state of the second grating 30 is further changed, the structural cost is reduced, and the structure is simplified. Therefore, through the air inlet subassembly that this embodiment provided, can solve the higher technical problem of the drive cost of the grid drive mode among the prior art.

In this embodiment, the air intake assembly further includes a transmission structure 40, a transmission input end of the transmission structure 40 is connected to the first grille 20, and a transmission output end of the transmission structure 40 is connected to the second grille 30. By adopting the structure, the first grating 20 can be conveniently driven to move by the second grating 30 through the transmission structure 40, so that the first grating 20 and the second grating 30 can be opened or closed in a linkage manner, and a motor is not required to be additionally arranged for driving.

Specifically, the transmission structure 40 in this embodiment includes a rotating member 41, the rotating member 41 rotates along the fixed rotating shaft 46, the rotating member 41 has a first rotating portion 411 and a second rotating portion 412, the first rotating portion 411 and the second rotating portion 412 are respectively located at two sides of the fixed rotating shaft 46, the first rotating portion 411 is connected to the first grille 20, and the second rotating portion 412 is connected to the second grille 30, so that the rotating member 41 drives the second grille 30 to open or close under the driving action of the first grille 20. By adopting the structure, the structure is simple, the action is reliable, and the first grating 20 can be used for driving the second grating 30 to move better, so that the first grating 20 and the second grating 30 can be changed in a linkage state.

Specifically, the transmission structure 40 further includes a first resetting member 42, a driving end of the first resetting member 42 is connected with the first rotating portion 411, and a resetting end of the first resetting member 42 forms a transmission input end. Alternatively, the transmission structure 40 further includes a second reset element 43, a driving end of the second reset element 43 is connected to the second rotating portion 412, and a reset end of the second reset element 43 forms a transmission output end. Or, the transmission structure 40 further includes a first reset element 42 and a second reset element 43, a driving end of the first reset element 42 is connected to the first rotating portion 411, a reset end of the first reset element 42 forms a transmission input end, a driving end of the second reset element 43 is connected to the second rotating portion 412, and a reset end of the second reset element 43 forms a transmission output end.

Through setting up the first piece 42 that resets, can be convenient for make first grid 20 can reset to the initial open mode smoothly by the closed condition smoothly, simple structure, the effect is reliable. By providing the second reset member 43, it is possible to facilitate the second grill 30 to be reset from closed to open smoothly. Specifically, by providing the first and second reset parts 42 and 43, the second grill 30 can be conveniently and smoothly driven by the first grill 20.

In this embodiment, the first grid 20 includes a plurality of first grid bars 21 arranged at intervals along a first preset direction, the first reset element 42 is a plurality of, the plurality of first reset elements 42 are arranged in one-to-one correspondence with the plurality of first grid bars 21, and each first reset element 42 is connected with a corresponding first grid bar 21. The transmission structure 40 further includes a first connecting member 44, the first connecting member 44 is connected to the first rotating portion 411, and the reset ends of the first reset members 42 are all connected to the first connecting member 44, so that the reset ends of the first reset members 42 are connected to the first rotating portion 411 through the first connecting member 44. With such a structure, the first connecting members 44 can smoothly drive the plurality of first restoring members 42 to move synchronously. Specifically, the first connecting member 44 in this embodiment may be a driving rope.

Specifically, the second grid 30 in this embodiment includes a plurality of second grid bars 31 arranged at intervals along the second preset direction, the second resetting member 43 is a plurality of, the plurality of second resetting members 43 and the plurality of second grid bars 31 are arranged in a one-to-one correspondence, and each second resetting member 43 is connected to a corresponding second grid bar 31; the transmission structure 40 further includes: and a second connecting member 45 connected to the second rotating portion 412, wherein the reset terminals of the plurality of second reset members 43 are connected to the second connecting member 45, so that the reset terminals of the plurality of second reset members 43 are connected to the second rotating portion 412 through the second connecting member 45. With the adoption of the structure, the second connecting piece 45 can smoothly drive the second resetting pieces 43 to move synchronously. Specifically, the second link 45 in this embodiment may be a drive rope.

In the present embodiment, a plurality of first grills 20 are disposed at intervals on the first housing 11, a plurality of second grills 30 are disposed at intervals on the second housing 12, the plurality of first grills 20 and the plurality of second grills 30 are disposed in a one-to-one correspondence, and each first grille 20 is in driving connection with a corresponding second grille 30. By adopting the structure, the plurality of first grids 20 and the corresponding plurality of second grids 30 can move synchronously, and the linkage of movement is effectively ensured.

Specifically, the first housing 11 in this embodiment is provided with a first guiding portion, and the fixing base is provided with a second guiding portion adapted to the first guiding portion, so as to guide the first housing 11 to move to the covering position or the air intake position under the cooperation of the first guiding portion and the second guiding portion. Adopt such structure setting, can be convenient for make first casing 11 move smoothly to covering position or air inlet position, guaranteed first casing 11 and covered the stability of switching between position and the air inlet position.

In this embodiment, first casing 11 is the arc casing, and first guide part is the arc rib, is provided with the arc wall with first casing 11 looks adaptation on the fixed base member, is provided with in the arc wall with arc rib complex arc guide way, the arc guide way forms the second guide part. By adopting the structure, the structure is simple and the effect is stable.

Specifically, the second housing 12 in this embodiment is a cylindrical structure, the first housing 11 is located at the bottom of the second housing 12, and the arc-shaped ribs have a first end and a second end which are oppositely arranged. The first grids 20 and the second grids 30 are two, the two second grids 30 are respectively positioned at the first end and the second end, and the two second grids 30 are arranged at intervals along the extending direction of the arc-shaped ribs; the two first grids 20 are respectively arranged opposite to the two second grids 30, and each first grid 20 is respectively positioned at the same side with the corresponding second grid 30. By adopting the structure, the structure is simple and the layout is compact.

In this embodiment, the first and second reset members 42 and 43 may be springs, and the springs open the grill when the grill swings with the head of the fan, so that the air inlet area of the fan is increased by the opening angle of the grill, thereby increasing the air output. When the fan rotates, the opening angle of the grating is parallel to the air inlet direction, and the noise generated by the friction between the air inlet and the grating is reduced.

An embodiment two of the utility model provides a fan, fan include the air inlet subassembly that the aforesaid provided. Fig. 9 is a schematic diagram of the operation of the fan in the present embodiment.

In this embodiment, the fan further includes a fan 50 and a mount 60. The fan 50 is installed in the air intake housing 10 to provide the air intake power of the first air intake and the second air intake. The mounting seat 60 forms a fixed base body, and when the first housing 11 of the air intake housing 10 is in the covering position, the first housing 11 cooperates with the mounting seat 60 to cover the first air intake; when the first housing 11 of the air inlet housing 10 is in the air inlet position, the first housing 11 and the mounting seat 60 are misaligned to avoid the first air inlet. With this arrangement, the change of the states of the first and second grills 20 and 30 can be achieved by changing the position of the intake housing 10. The air inlet housing 10 may be manually operated by a user to manually snap the air inlet housing 10 to the air inlet position or the covering position.

The utility model relates to a hand-held electric fan, the head part (the head part is corresponding to the air inlet shell 10), the air inlet area is smaller, so the utility model designs the grid to be movable while adding the grid on the head shell, reserves the space of the grid on the head, fixes the grid on the head through the hinge axis, and the spring is fixed on the grid; the oscillating direction of the electric fan is a front direction and a rear direction, so the position of the grids is designed on the front side and the rear side of the machine head, four grids are respectively arranged on each side, the grids are also designed on the machine head sliding structure, two grids are respectively arranged on two sides of the sliding groove structure, and three grids are respectively arranged on each side.

The machine head is provided with a spring at each grid, one side of the spring is fixed on the grid and welded on the same iron wire, and one side of the iron wire is welded on one side of the seesaw; the spring on the grid on the sliding mechanism is also fixed on the grid on one side, the other side is welded on another iron wire, and one end of the iron wire is welded on the other side of the seesaw.

When the machine head normally faces upwards, the sliding mechanism is sleeved by the shell of the machine body below, the grid of the sliding mechanism is also pressed and does not open, at the moment, one end, welded by a spring and an iron wire, of the grid at the sliding structure pulls the iron wire downwards, so that the warping plate tilts clockwise, and the iron wire at the other side is pushed upwards by the warping plate, so that the grid of the machine head part is also not opened; when the machine head slides forwards or backwards, if the machine head slides forwards, the grid at the rear side sliding mechanism is not pressed by the machine body any more, and is expanded by the elasticity of the spring, the other side of the spring drives the iron wire to jack the wane upwards, so that the wane tilts anticlockwise, the iron wire at the other side is pulled downwards, the spring at the machine head rotates clockwise, the other end of the spring jacks the grid, and the expansion angle of the grid is parallel to the air inlet direction, so that the effect of increasing the air inlet area can be achieved, meanwhile, the friction between the grid and the air inlet is reduced, and the noise during operation is reduced; and simultaneously operates when turning backwards.

The air inlet assembly in the embodiment can solve the problem that the air inlet amount of a fan in the prior art is small due to blocking of a grating; the problem of the grid air inlet windage is inconsistent with the intake when the fan turns around is solved, the noise problem in the fan operation is reduced.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: this design is through realizing that the grid shakes the head along with the fan and opens the design of closing, and the air inlet area when can making the fan shake the head increases for the air output of fan also increases simultaneously, and also can suitably reduce the noise of operation. When the fan rotates, the air intake of the fan is different from the air intake due to different rotating angles of the fan, and the grille can be opened at different angles along with different rotating angles of the fan.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …", "above … …", "above … …, on a surface", "above", and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, so that the scope of the present application is not to be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. An air intake assembly, comprising:

the air inlet shell (10) comprises a first shell (11) and a second shell (12) which are connected with each other, a first air inlet is formed in the first shell (11), a second air inlet is formed in the second shell (12), the first shell (11) is adjustably mounted on a fixed base body in position, the first shell (11) is provided with a covering position enabling the first air inlet to be covered and an air inlet position enabling the first air inlet to enter air, and the second shell (12) protrudes out of the fixed base body;

a first grill (20) angularly adjustably disposed at the first air inlet; when the first casing (11) is in the covering position, the first grille (20) is in a closed state under the action of cooperation with the fixed base; when the first housing (11) is in the air inlet position, the first grille (20) is in an initial open state;

the second grille (30) is arranged at the second air inlet in an angle adjustable mode, the first grille (20) is in driving connection with the second grille (30) so as to drive the second grille (30) to be closed when the first grille (20) moves to the closed state, and drive the second grille (30) to be opened when the first grille (20) moves to the open state.

2. The intake assembly of claim 1, further comprising:

the transmission structure (40), the transmission input end of transmission structure (40) with first grid (20) are connected, the transmission output end of transmission structure (40) with second grid (30) are connected.

3. The intake assembly of claim 2, wherein the transmission structure (40) comprises:

rotate piece (41), it rotates along fixed rotating shaft to rotate piece (41), it has first rotation portion (411) and second rotation portion (412) to rotate piece (41), first rotation portion (411) with second rotation portion (412) are located respectively fixed rotating shaft's both sides, first rotation portion (411) with first grid (20) are connected, second rotation portion (412) with second grid (30) are connected, with pass through under the driver action of first grid (20) rotate piece (41) and drive second grid (30) are opened or are closed.

4. The air intake assembly of claim 3, wherein the transmission structure (40) further comprises:

a first reset piece (42), wherein the driving end of the first reset piece (42) is connected with the first rotating part (411), and the reset end of the first reset piece (42) forms the transmission input end; and/or the presence of a gas in the gas,

a second reset member (43), a driving end of the second reset member (43) is connected with the second rotating part (412), and a reset end of the second reset member (43) forms the transmission output end.

5. The air intake assembly of claim 4, wherein the first grille (20) includes a plurality of first grills (21) spaced apart along a first predetermined direction, the first reset member (42) is a plurality of first reset members, the plurality of first reset members (42) are disposed in one-to-one correspondence with the plurality of first grills (21), and each first reset member (42) is connected to a corresponding first grille (21); the transmission structure (40) further comprises:

the first connecting piece (44) is connected with the first rotating portion (411), and the resetting ends of the first resetting pieces (42) are connected with the first connecting piece (44), so that the resetting ends of the first resetting pieces (42) are connected with the first rotating portion (411) through the first connecting piece (44).

6. The air intake assembly of claim 4, wherein the second grille (30) includes a plurality of second grills (31) spaced apart along a second predetermined direction, the second reset member (43) is a plurality, the plurality of second reset members (43) is disposed in one-to-one correspondence with the plurality of second grills (31), and each second reset member (43) is connected to a corresponding second grill (31); the transmission structure (40) further comprises:

and a second connecting member (45) connected to the second rotating portion (412), wherein the reset ends of the plurality of second reset members (43) are connected to the second connecting member (45), so that the reset ends of the plurality of second reset members (43) are connected to the second rotating portion (412) through the second connecting member (45).

7. The air intake assembly of claim 4, wherein a plurality of first grilles (20) are arranged on the first casing (11) at intervals, a plurality of second grilles (30) are arranged on the second casing (12) at intervals, the plurality of first grilles (20) and the plurality of second grilles (30) are arranged in a one-to-one correspondence manner, and each first grille (20) is in driving connection with the corresponding second grille (30).

8. The air intake assembly according to claim 1, wherein the first housing (11) is provided with a first guiding portion, and the fixed base is provided with a second guiding portion adapted to the first guiding portion, so as to guide the first housing (11) to move to the covering position or the air intake position under cooperation of the first guiding portion and the second guiding portion.

9. The air intake assembly of claim 8, wherein the first casing (11) is an arc-shaped casing, the first guide portion is an arc-shaped rib, an arc-shaped groove matched with the first casing (11) is formed in the fixed base body, an arc-shaped guide groove matched with the arc-shaped rib is formed in the arc-shaped groove, and the arc-shaped guide groove forms the second guide portion.

10. The air intake assembly of claim 9, wherein the second casing (12) is of a cylindrical structure, the first casing (11) is located at the bottom of the second casing (12), and the arc-shaped ribs have a first end and a second end which are oppositely arranged;

the number of the first grids (20) and the number of the second grids (30) are two, the two second grids (30) are respectively located at the first end and the second end, and the two second grids (30) are arranged at intervals along the extending direction of the arc-shaped ribs; the two first grids (20) are respectively arranged opposite to the two second grids (30), and each first grid (20) is respectively positioned on the same side with the corresponding second grid (30).

11. A fan comprising the intake assembly of any one of claims 1 to 10.

12. The fan as claimed in claim 11, further comprising:

the fan (50) is arranged in the air inlet shell (10);

a mounting seat (60), the mounting seat (60) forming the fixed base; when the first shell (11) of the air inlet shell is in a covering position, the first shell (11) is matched with the mounting seat (60) to cover the first air inlet; when the first shell (11) of the air inlet shell is located at an air inlet position, the first shell (11) and the mounting seat (60) are staggered to avoid the first air inlet.

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