CN219014509U - Base and air supply device - Google Patents

Abstract

The application relates to a base and air supply device. The base comprises a base body, an air supply assembly and a shielding assembly. The seat body is connected with the air outlet part, and the seat body is provided with a sub air outlet. The air supply assembly is arranged in the base body, and the air outlet end of the air supply assembly is communicated with the sub air outlet. The shielding assembly is movably connected to the base body in a matching mode, and is provided with a first state of covering the sub air outlets and a second state of exposing the sub air outlets relative to the base body. The base that this application provided has installed the shielding subassembly at the pedestal. When the base is closed, the shielding assembly can shield the air outlet on the base body, so that the air outlet is prevented from being exposed all the time, and the dust amount accumulated in the air outlet and the air supply assembly is reduced. Therefore, the difficulty of cleaning the air outlet and the air supply assembly by a user is reduced.

Description

Base and air supply device

Technical Field

The application relates to the technical field of household appliances, in particular to a base and an air supply device.

Background

The air supply device is a household appliance commonly used in life, but the air supply device is used for a long time, so that a large amount of dust is easily accumulated on an air supply component of the air supply device. The air supply assembly is arranged in the air supply device, so that the air supply assembly is relatively difficult to disassemble and assemble, and a user cannot clean the air supply assembly conveniently.

Disclosure of Invention

This application provides a base air supply arrangement to the inconvenient clean problem of current base, and this base and air supply arrangement have the technical effect that reduces the clean degree of difficulty of air supply subassembly.

A base, applied in an air supply device, comprising:

the seat body is provided with a sub air outlet;

the air supply assembly is arranged in the seat body, and the air outlet end of the air supply assembly is communicated with the sub air outlet;

the shielding assembly is movably connected to the base in a matching mode and is provided with a first state of covering the sub air outlets and a second state of exposing the sub air outlets relative to the base.

In one embodiment, a first guiding part is arranged on the periphery of the sub air outlet on the base body, and the shielding assembly comprises a baffle plate and a second guiding part matched with the first guiding part;

the second guide part is arranged on the baffle plate and moves relative to the first guide part so as to drive the baffle plate to expose or cover the sub air outlet.

In one embodiment, the first guide portion and the second guide portion are configured as follows:

one of the first guide part and the second guide part is a sliding groove, and the other is a sliding rail which is in sliding fit with the sliding groove; or alternatively

One of the first guide part and the second guide part is a sliding groove, the other is a pulley which is in sliding fit with the sliding groove, and the pulley is in sliding fit with the sliding groove; or alternatively

One of the first guide part and the second guide part is a sliding groove, the other is a sliding rail which is in sliding fit with the sliding groove, and a pulley which is in sliding fit with the sliding groove is arranged on the side wall of the sliding rail, which faces the sliding groove.

In one embodiment, the shielding assembly further comprises a first limiting part, the first limiting part is arranged on the base body, and the first limiting part is used for limiting the shielding assembly in the second state on the moving path of the shielding assembly.

In one embodiment, the base is provided with a fixing portion, the first limiting portion includes a main body and an abutting portion disposed on the main body, the main body is connected with the fixing portion, and the abutting portion is detachably assembled in the chute.

In one embodiment, the first limiting portion further includes a connecting portion, a first mating sub-portion is configured on the connecting portion, a second mating sub-portion is configured on the fixing portion at a position corresponding to the first mating sub-portion, and the first mating sub-portion is detachably mated with the second mating sub-portion.

In one embodiment, the first mating sub-portion is a recess formed in the connection portion, and the second mating sub-portion is a protrusion mated with the recess.

In one embodiment, the shielding assembly comprises a driving member and a transmission member, wherein the driving member is installed on the base, one end of the transmission member is connected with the driving member, and the other end of the transmission member is connected with the baffle.

In one embodiment, the driving member includes an intermeshing gear coupled to the driving member and a rack located on the barrier and extending lengthwise in the direction of movement of the barrier.

In one embodiment, the seat body includes a body and a second limiting portion that are connected to each other, the sub-air outlet is provided on the body, and the second limiting portion is configured to limit the shielding assembly in the first state on a moving path of the shielding assembly.

In one embodiment, the seat body includes a grill covering the sub-air outlet.

In addition, this application still provides an air supply arrangement, including air-out portion and above-mentioned base, air-out portion with the base is connected.

Compared with the prior art, the base and the air supply device provided by some embodiments of the application are provided with the shielding assembly on the base body. When the air supply device is closed, the shielding component can shield the air outlet on the seat body, so that the air outlet is prevented from being exposed all the time, and the dust amount accumulated in the air outlet and the air supply component is reduced. Therefore, the difficulty of cleaning the air outlet and the air supply assembly by a user is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a sub-air outlet of a base provided in some embodiments of the present application in a bare state;

fig. 2 is a schematic structural diagram of a sub-air outlet of a base in a covered state according to some embodiments of the present disclosure;

fig. 3 is a cross-sectional view of an air outlet of a base provided in some embodiments of the present application in a bare state;

fig. 4 is a cross-sectional view of an air outlet of a base provided in some embodiments of the present application in a covered state;

FIG. 5 is a schematic structural view of a base according to some embodiments of the present disclosure;

FIG. 6 is an enlarged view at A in FIG. 5;

FIG. 7 is an exploded view of a base provided in some embodiments of the present application;

fig. 8 is a cross-sectional view of an air outlet of a base provided in some embodiments of the present application in a bare state;

fig. 9 is a cross-sectional view of an air outlet of a base provided in some embodiments of the present application in a covered state;

FIG. 10 is a schematic view of a baffle of a base according to some embodiments of the present disclosure;

FIG. 11 is a schematic structural view of a base provided in some embodiments of the present application;

fig. 12 is a schematic structural view of a first limiting portion of a base according to some embodiments of the present disclosure;

fig. 13 is a schematic structural diagram of an air supply device according to some embodiments of the present disclosure.

Reference numerals illustrate:

100. a base; 10. a base; 11. a sub-air outlet; 12. a first guide part; 13. a body; 14. a second limit part; 15. a fixing part; 151. a second mating sub-portion; 16. a grille; 20. an air supply assembly; 30. a shielding assembly; 31. a baffle; 32. a second guide part; 321. a pulley; 322. a mounting member; 33. a driving member; 34. a transmission member; 341. a gear; 342. a rack; 35. a first limit part; 351. a main body; 352. an abutting portion; 353. a connection part; 3531. a first mating sub-portion; 200. and an air outlet part.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "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 directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

As shown in fig. 1-3, some embodiments of the present application provide a base 100. The base 100 includes a base body 10, an air supply assembly 20, and a shielding assembly 30. The air outlet portion 200 is disposed on the base 10, and is configured to outlet air when the base 100 is in an operating state. The air supply assembly 20 is disposed in the base 10, and the base 10 is provided with a sub-air outlet 11 communicating with an air outlet end of the air supply assembly 20, and the shielding assembly 30 is movably coupled to the base 10 and has a first state of shielding the sub-air outlet 11 and a second state of exposing the sub-air outlet 11 relative to the base 10. The operation principle of the base 100 will be described below taking an application scenario in which the base 100 is switched from the closed state to the operating state as an example.

As shown in fig. 2 and 4, when the base 100 is in the closed state, the air supply assembly 20 stops working, the air outlet 200 does not outlet air, and the sub-air outlet 11 of the base 10 is blocked by the blocking assembly 30 and does not outlet air (i.e. the blocking assembly 30 is in the first state). As shown in fig. 1 and 3, when the base 100 is in the operation state, the air supply assembly 20 starts to operate, and the external air flows toward the air outlet portion 200 and is blown out from the air outlet portion 200 by the driving of the air supply assembly 20. At the same time, the shielding assembly 30 can move to the sub-air outlet 11 on the base 10 gradually appears relative to the base 10, and when the sub-air outlet 11 is at least partially exposed, the shielding assembly 30 stops moving (i.e. the shielding assembly 30 is in the second state). Thus, the sub-outlets 11 on the base 10 can also be used for air-out. In other words, when the base 100 is operated, the air outlet 200 and the sub-air outlet 11 on the base 10 simultaneously outlet air.

Because the sub-air outlet 11 of the base 100 is communicated with the air supply assembly 20, impurities such as dust and oil dirt easily enter the air supply assembly 20 through the sub-air outlet 11 when the base 100 is used for a long time, thereby causing the accumulation of impurities in the air supply assembly 20. Because the air supply assembly 20 is installed in the seat body 10, the disassembly and assembly are inconvenient, and the cleaning difficulty of users is increased. In addition, the sub-outlets 11 are free from shielding, and dust is easily accumulated. In this way, when the base 100 is used again, the air flowing out from the sub-air outlet 11 can carry a large amount of dust.

While some embodiments of the present application provide a base 100 in which the shield assembly 30 is mounted to the housing 10. When the base 100 is closed, the shielding assembly 30 can shield the sub-air outlet 11 on the base 10, so as to prevent the sub-air outlet 11 from being exposed all the time, and reduce the dust accumulated in the sub-air outlet 11 and the air supply assembly 20. Thus, the difficulty of cleaning the sub-air outlet 11 and the air supply assembly 20 by a user is reduced.

As shown in fig. 5, in some embodiments, a first guiding portion 12 is disposed on the base 10 at the periphery of the sub-air outlet 11. The first guiding portion 12 is located at a side of the sub-air outlet 11 away from the air outlet portion 200, and the first guiding portion 12 may extend in the first direction X, or it may be understood that the first guiding portion 12 may extend in a direction in which the air outlet portion 200 is located. As shown in fig. 7, the shielding assembly 30 includes a baffle 31 and a second guide portion 32 fitted with the first guide portion 12. The second guiding portion 32 is mounted on the baffle 31, and the second guiding portion 32 moves relative to the first guiding portion 12 to drive the baffle 31 to move relative to the first guiding portion 12, and expose or cover the sub-air outlet 11.

By providing the baffle plate 31 capable of shielding the sub-air outlet 11 and providing the second guide portion 32 on the baffle plate 31 and the first guide portion 12 matched with the second guide portion 32, the baffle plate 31 can move relative to the seat body 10, so that the sub-air outlet 11 is shielded by the baffle plate 31, and the structure of the shielding assembly 30 can be simplified.

For example, as shown in fig. 5 and 7, the first guide 12 may be a chute. The second guiding portion 32 may be a sliding rail, and both the sliding rail and the sliding block may extend along the first direction X, and the sliding rail is slidably engaged with the sliding slot. When the second guiding portion 32 moves relative to the first guiding portion 12, the baffle 31 can be driven to move relative to the base 10, so as to cover the sub-air outlet 11.

By this arrangement, the structure between the first guide portion 12 and the second guide portion 32 is simplified, and the first guide portion 12 and the second guide portion 32 can be manufactured easily.

In some examples, the number of runners may be two, with two runners spaced apart on the barrier 31 to increase smoothness of the barrier 31 as it moves. The specific number of the sliding grooves may be adjusted according to actual circumstances, and is not specifically limited herein.

Of course, in some examples, the first guide 12 may be a sliding rail and the second guide 32 may be a sliding slot. In other examples, one of the first guide portion 12 and the second guide portion 32 may be a sliding groove, and the other may be a pulley 321 slidably engaged with the sliding groove. The pulley 321 is in sliding fit with the chute.

With continued reference to fig. 7, in some examples, one of the first guide portion 12 and the second guide portion 32 may be a sliding groove, the other may be a sliding rail slidingly engaged with the sliding groove, and a side wall of the sliding rail facing the sliding groove is provided with a pulley 321 slidingly engaged with the sliding groove.

For example, as shown in fig. 7, the second guide 32 may be a slide rail. The side walls of the slide rail may be provided with mounting members 322. The pulley 321 may be provided with a through hole, and the pulley 321 may be mounted by the through hole. The mounting member 322 may be an elastic member (e.g., a snap button), so as to facilitate the mounting and dismounting of the pulley 321. After the pulley 321 is installed, the pulley 321 may be positioned in the chute and contact with the inner wall of the chute.

When the sliding rail moves relative to the sliding groove, the pulley 321 can perform rolling friction with the groove wall of the sliding groove, so that the contact area between the sliding groove and the sliding rail is reduced, that is, the contact area between the first guide part 12 and the second guide part 32 is reduced, the friction resistance between the first guide part 12 and the second guide part 32 is reduced, and the smoothness of movement of the second guide part 32 relative to the first guide part 12 is improved.

Specifically, in some examples, a plurality of pulleys 321 may be disposed on a side wall of the sliding rail, and the plurality of pulleys 321 are disposed at intervals along an extending direction of the sliding rail. To further enhance the fluency of movement of the second guide portion 32 relative to the first guide portion 12.

In some examples, as shown in fig. 7-9, the shield assembly 30 includes a driver 33 and a transmission 34. The driving member 33 is mounted to the housing 10. The driving member 33 and the base 10 may be connected together by a fastener, for example, at least one threaded hole is formed in the driving member 33, and the driving member 33 is mounted to the base 10 by a fastener such as a screw when the base 10 is provided with a corresponding screw column (as shown in fig. 11) or threaded hole. It will be appreciated that in some examples, the driver 33 may also be snapped into engagement with the housing 10.

One end of the transmission member 34 is connected to the driving member 33, and the other end of the transmission member 34 is connected to the shutter 31. Illustratively, one end of the transmission 34 may be interference fit with the drive shaft of the motor, and the other end of the transmission 34 may be connected with the baffle 31. When the driving member 33 is operated, the driving shaft of the driving member 33 drives the driving member 34 to operate, so that the baffle 31 is driven to move along the first guiding portion 12 by the driving member 34.

The baffle 31 is driven to displace by the driving piece 33 and the transmission piece 34, so that the structure for driving the baffle 31 to move is simplified.

Further, as shown in fig. 8-10, in some examples, the transmission 34 may include an intermeshing gear 341 and a rack 342. The gear 341 may be connected to the driving member 33, i.e. the shaft of the driving member 33 may extend into the opening of the gear 341 to drive the gear 341 to perform a circular motion. The rack 342 is located on the shutter 31 and extends lengthwise in the moving direction of the shutter 31. The extending direction of the rack 342 and the second guide portion 32 is identical, i.e., the rack 342 may be disposed to extend in the first direction X.

When the driving member 33 is operated, the gear 341 is rotated clockwise, and the shutter 31 can be moved by the rack 342 because the rack 342 is engaged with the gear 341 and the rack 342 is mounted on the shutter 31. At this time, the pulley 321 attached to the second guide portion 32 also rotates along the first guide portion 12 following the shutter 31. Assuming that the baffle 31 moves away from the sub-air outlet 11 at this time, when the sub-air outlet 11 is exposed, the driving member 33 stops operating, and the baffle 31 also stops moving.

Similarly, when the gear 341 rotates counterclockwise, the baffle 31 can move toward the direction of the sub-air outlet 11, and when the baffle 31 covers the sub-air outlet 11, the driving member 33 can stop.

By adopting the gear 341 and the rack 342 as the transmission member 34, not only uniform movement of the shutter 31 can be realized, but also the life of the transmission member 34 can be prolonged.

As shown in fig. 7, in some embodiments, the housing 10 includes a body 13 and a second stopper 14 that are connected to each other. The sub-air outlet 11 may be disposed on the main body 13, for example, the second limiting portion 14 may be located at a side of the sub-air outlet 11 near the air outlet portion 200. The second stop 14 may be used to stop the shield assembly 30 in the first position, in the path of movement of the shield assembly 30.

As shown in fig. 9, when the baffle 31 moves to the sub-air outlet 11 along the first direction X and completely covers the sub-air outlet 11, the baffle 31 can abut against the second limiting portion 14. Therefore, the baffle 31 can be limited by the second limiting portion 14, that is, the shielding assembly 30 is limited by the second limiting portion 14, so that the probability that the shielding assembly 30 excessively moves and cannot cover the air outlet 11 and even fall off from the seat body 10 is reduced.

In some examples, as shown in fig. 7, the shield assembly 30 further includes a first stop 35. The first limiting portion 35 may be disposed on the base 10. For example, the first limiting portion 35 may be far away from one side of the ion air outlet 11. The first stopper 35 is for stopping the shutter assembly 30 in the second state on the moving path of the shutter assembly 30.

For example, as shown in fig. 8, when the baffle 31 moves away from the sub-air outlet 11, the baffle 31 is limited by the first limiting portion 35, that is, the shielding assembly 30 is limited by the first limiting portion 35, so as to reduce the probability that the shielding assembly 30 is dropped from the seat 10 due to excessive movement.

The first limiting portion 35 may be detachably connected to the base 10. Thereby facilitating replacement of the first limiting portion 35 when it is damaged.

Illustratively, as shown in fig. 5 and 6, the base 10 is provided with a fixing portion 15. As shown in fig. 12, the first stopper 35 includes a main body 351 and an abutment 352 provided on the main body 351. The main body 351 is connected to the fixing portion 15, and the abutment portion 352 is detachably fitted in the chute.

When the main body 351 and the fixing portion 15 are connected, the abutting portion 352 may extend into the chute, the size of the abutting portion 352 may be consistent with the opening of the chute in the first direction X, and after the abutting portion 352 extends into the chute, the abutting portion 352 may contact with the wall of the chute, thereby improving the connection stability between the abutting portion 352 and the chute.

Further, in some examples, as shown in fig. 12, the first limiting portion 35 further includes a connecting portion 353. The connection portion 353 is configured with a first fitting sub portion 3531. As shown in fig. 6, a second fitting sub portion 151 may be configured at a position on the fixing portion 15 corresponding to the first fitting sub portion 3531, and the first fitting sub portion 3531 may be detachably fitted with the second fitting sub portion 151. In this way, the connection stability between the first stopper 35 and the housing 10 can be further improved.

Illustratively, as shown in fig. 12, the first fitting sub portion 3531 may be a recess (e.g., groove) formed at the connection portion 353. As shown in fig. 6, the second mating sub-portion 151 may be a protrusion (e.g., a snap) that mates with a recess. So set up, not only simplified the structure, be convenient for install and dismantle first spacing portion 35 moreover.

In some examples, the housing 10 includes a grill 16, the grill 16 covering the air outlet 11. In this way, the grille 16 can prevent dust from entering the air supply assembly 20 through the sub-air outlet 11, so that the air quality of the air outlet is improved.

In addition, some embodiments of the present application further provide an air supply device. As shown in fig. 13, the blower includes an air outlet 200 and the base 100. The air outlet portion 200 is detachably connected to the base 100.

When the air supply device is operated, besides the air outlet portion 200 can be used for discharging air, the shielding assembly 30 can also move relative to the base 10, so that the sub air outlet 11 is at least partially exposed, and air is further realized. It should be noted that, the air outlet 200 and the sub-air outlet 11 on the base 10 may select whether to simultaneously outlet air according to the user's requirement. For example, when the air output is sufficient, the air outlet 200 or the sub-air outlet 11 on the base 10 may be opened; when the air output is small, the air outlet 200 or the sub-air outlet 11 on the base 10 can be opened at the same time.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (12)

1. The utility model provides a base is applied to in air supply arrangement, which characterized in that includes:

a base body (10) provided with a sub air outlet (11);

the air supply assembly (20) is arranged in the base body (10), and the air outlet end of the air supply assembly (20) is communicated with the sub air outlet (11);

the shielding assembly (30) is movably connected to the base body (10) in a matching mode, and is provided with a first state of covering the sub air outlets (11) and a second state of exposing the sub air outlets (11) relative to the base body (10).

2. The base according to claim 1, characterized in that a first guide part (12) is arranged on the periphery of the sub-air outlet (11) on the base body (10), and the shielding assembly (30) comprises a baffle plate (31) and a second guide part (32) matched with the first guide part (12);

the second guiding part (32) is installed on the baffle plate (31), and the second guiding part (32) moves relative to the first guiding part (12) so as to drive the baffle plate (31) to expose or cover the sub air outlet (11).

3. The base according to claim 2, characterized in that the first guide (12) and the second guide (32) are configured as one of:

one of the first guide part (12) and the second guide part (32) is a sliding groove, and the other is a sliding rail which is in sliding fit with the sliding groove; or alternatively

One of the first guide part (12) and the second guide part (32) is a sliding groove, the other is a pulley (321) which is in sliding fit with the sliding groove, and the pulley (321) is in sliding fit with the sliding groove; or alternatively

One of the first guide part (12) and the second guide part (32) is a sliding groove, the other is a sliding rail which is in sliding fit with the sliding groove, and a pulley (321) which is in sliding fit with the sliding groove is arranged on the side wall of the sliding rail facing the sliding groove.

4. A base according to claim 3, wherein the shielding assembly (30) further comprises a first limiting portion (35), the first limiting portion (35) being provided to the base body (10), the first limiting portion (35) being adapted to limit the shielding assembly (30) in the second state on the movement path of the shielding assembly (30).

5. The base according to claim 4, characterized in that the base body (10) is provided with a fixing portion (15), the first limiting portion (35) comprises a main body (351) and an abutting portion (352) arranged on the main body (351), the main body (351) is connected with the fixing portion (15), and the abutting portion (352) is detachably assembled in the chute.

6. The base according to claim 5, wherein the first limiting portion (35) further comprises a connecting portion (353), a first mating sub-portion (3531) is configured on the connecting portion (353), a second mating sub-portion (151) is configured on the fixing portion (15) at a position corresponding to the first mating sub-portion (3531), and the first mating sub-portion (3531) is detachably mated with the second mating sub-portion (151).

7. The base of claim 6, wherein the first mating sub-portion (3531) is a recess formed in the connection portion (353), and the second mating sub-portion (151) is a protrusion that mates with the recess.

8. A base according to any one of claims 2 to 7, wherein the shutter assembly (30) comprises a driving member (33) and a transmission member (34), the driving member (33) being mounted to the base (10), one end of the transmission member (34) being connected to the driving member (33), the other end of the transmission member (34) being connected to the baffle (31).

9. A base according to claim 8, characterized in that the transmission member (34) comprises an intermeshing gear wheel (341) and a rack (342), the gear wheel (341) being connected to the driving member (33), the rack (342) being located on the barrier (31) and extending lengthwise in the direction of movement of the barrier (31).

10. The base according to any one of claims 2 to 7, characterized in that the base body (10) comprises a body (13) and a second limiting portion (14) which are mutually connected, the sub-air outlet (11) being open on the body (13), the second limiting portion (14) being adapted to limit the shielding assembly (30) in the first state on the movement path of the shielding assembly (30).

11. The base according to any one of claims 2 to 7, characterized in that the base body (10) comprises a grille (16), the grille (16) covering the sub-outlets (11).

12. An air supply device, characterized by comprising an air outlet portion (200) and a base (100) according to any one of claims 1 to 11, the air outlet portion (200) being connected to the base (100).

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