CN117932808A

CN117932808A - Tooth shape design method of racks in gear-rack meshing structure and air conditioner

Info

Publication number: CN117932808A
Application number: CN202410046327.6A
Authority: CN
Inventors: 徐新; 魏伟; 田志强; 顾明亮; 李泽锐; 王晓刚
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2024-01-12
Filing date: 2024-01-12
Publication date: 2024-04-26

Abstract

The application relates to the technical field of air conditioners, and discloses a tooth shape design method of racks in a gear-rack meshing structure and an air conditioner. The tooth shape design method comprises the following steps: calculating the magnitude of the AOC, wherein the tangential point of the first linear track and the gear pitch circle is A, the tangential point of the second linear track and the gear pitch circle is C, and the rotation center of the gear is O; according to the size of the AOC, the tooth shape of the transition gear tooth segment between the first linear gear tooth segment and the second linear gear tooth segment is designed, so that the tooth shape of the transition gear tooth segment is matched with the size of the AOC, and smooth switching from the first linear track to the second linear track in the rack movement process is realized.

Description

Tooth shape design method of racks in gear-rack meshing structure and air conditioner

Technical Field

The application relates to the technical field of air conditioners, in particular to a tooth shape design method of racks in a gear-rack meshing structure and an air conditioner.

Background

At present, when the air conditioner air deflector swings, the rotation center is fixed, so that various air guiding functions cannot be realized, and the use requirements of users cannot be met.

In the related art, the air deflector is driven through the gear rack structure, and the racks move along the first linear track and the second linear track in sequence, so that the number of air guiding positions of the air deflector is increased, the air deflector has various air guiding functions, and the use requirements of users are met.

However, how to design a rack capable of moving along a first linear track and a second linear track sequentially is a problem to be solved.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a tooth shape design method of a rack in a gear-rack meshing structure and an air conditioner so as to realize tooth shape design of the rack.

According to a first aspect of the embodiment of the present invention, there is provided a tooth shape design method for a rack in a rack-and-pinion engagement structure, the rack sequentially moving along a first linear track and a second linear track, the rack being provided with a first linear gear tooth segment and a second linear gear tooth segment so as to correspond to the first linear track and the second linear track, respectively, the tooth shape design method comprising: calculating the magnitude of the AOC, wherein the tangential point of the first linear track and the gear pitch circle is A, the tangential point of the second linear track and the gear pitch circle is C, and the rotation center of the gear is O; and designing the tooth shape of the transition gear tooth segment between the first straight gear tooth segment and the second straight gear tooth segment according to the magnitude of the AOC.

Optionally, designing the tooth form of the transition gear tooth segment between the first straight gear tooth segment and the second straight gear tooth segment according to the magnitude of +.AOC, including: and designing the tooth shape of a transition gear tooth segment between the first straight gear tooth segment and the second straight gear tooth segment according to the magnitude relation of the angle AOC and k x alpha, wherein alpha is the tooth pitch angle of the gear, and k is more than or equal to 1 and less than or equal to 1.5.

Optionally, designing the tooth shape of the transition gear tooth segment between the first straight gear tooth segment and the second straight gear tooth segment according to the magnitude relation of the +.AOC and the k×α, including: under the condition that the angle AOC is smaller than or equal to alpha, the transition gear tooth segment is designed to be a straight-line tooth shape or a plurality of straight-line tooth shapes, wherein the plurality of straight-line tooth shapes are sequentially arranged along the length direction of the rack, and a folding angle exists between two adjacent straight-line tooth shapes.

Optionally, designing the tooth shape of the transition gear tooth segment between the first straight gear tooth segment and the second straight gear tooth segment according to the magnitude relation of the +.AOC and the k×α, including: under the condition that the angle AOC is larger than alpha, designing a transition gear tooth section to comprise a circular arc tooth shape; or under the condition that the angle AOC is larger than alpha, splitting the angle AOC into a plurality of sub angles, wherein each sub angle is smaller than or equal to alpha, dividing the transition gear tooth segment into a plurality of sub transition gear tooth segments, and designing the tooth shape of each sub transition gear tooth segment, wherein the number of the sub transition gear tooth segments is equal to and corresponds to the number of the sub angles one by one.

Optionally, in the case where the angle AOC is greater than α, the design transition gear tooth segment includes a circular arc tooth profile, including: under the condition that the angle AOC is larger than alpha and smaller than or equal to 1.5 x alpha, designing a transition gear tooth segment to be arc-shaped; under the condition that the angle AOC is larger than 1.5 x alpha, the designed transition gear tooth section comprises a circular arc tooth shape and a linear tooth shape which are sequentially arranged along the length direction of the rack.

Optionally, under the condition that the angle AOC is greater than 1.5×α, designing the transition gear tooth segment includes sequentially setting up arc tooth profile and straight line tooth profile along the length direction of the rack, including: in the case where the number of circular-arc tooth forms is plural and/or the number of straight-line tooth forms is plural, the circular-arc tooth forms and the straight-line tooth forms are alternately arranged along the length direction of the rack.

Optionally, the circular arc tooth profile and the linear tooth profile are alternately arranged along the length direction of the rack, including: the degree of inclination of the straight line where the straight line tooth profile is located is between the degree of inclination of the first straight line track and the second straight line track.

Optionally, under the condition that the angle AOC is greater than 1.5×α, designing the transition gear tooth segment includes sequentially setting up arc tooth profile and straight line tooth profile along the length direction of the rack, including: under the condition that the angle AOC is larger than 1.5 x alpha, the angle AOC is split into a plurality of sub angles, each sub angle is smaller than or equal to 1.5 x alpha, the transition gear tooth sections are divided into a plurality of sub transition gear tooth sections, the number of the sub transition gear tooth sections is equal to and corresponds to the number of the sub angles one by one, and the tooth shape of each sub transition gear tooth section is designed.

Optionally, the length of the straight tooth profile is greater than or equal to L, where L is the pitch of the gear.

According to a second aspect of an embodiment of the present invention, there is provided an air conditioner including: the indoor unit comprises a shell and an air deflector, wherein the shell defines an air duct and is provided with an air outlet communicated with the air duct, and the air deflector is movably arranged at the air outlet; the rack designed by the tooth form design method of the rack in the gear-rack meshing structure according to any one of the above embodiments, wherein the rack is in driving connection with the air deflector.

The tooth shape design method of the rack in the gear-rack meshing structure and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:

The size of the angle AOC can influence the tooth shape of the transition gear tooth segment, so the tooth shape of the transition gear tooth segment is designed according to the size of the angle AOC, the tooth shape of the transition gear tooth segment is matched with the size of the angle AOC, and smooth switching from a first linear track to a second linear track in the rack movement process is realized.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

Fig. 1 is a schematic structural view of an indoor unit according to an embodiment of the present disclosure, where both a first air deflector and a second air deflector are in a closed position;

fig. 2 is a schematic structural view of the indoor unit of fig. 1 at another view angle;

Fig. 3 is an exploded view of a driving device of the indoor unit of fig. 1;

fig. 4 is a schematic structural view of a second sidewall of the indoor unit of fig. 1;

Fig. 5 is a schematic structural view of a first link and a connecting rod of the indoor unit of fig. 1;

fig. 6 is a schematic structural view of a first sidewall of the indoor unit of fig. 1;

Fig. 7 is a schematic structural view of a second link of the indoor unit of fig. 1;

Fig. 8 is a partial structural schematic view of the indoor unit of fig. 1;

FIG. 9 is a schematic cross-sectional view of the structure of FIG. 8 taken along the direction A-A;

FIG. 10 is a schematic cross-sectional view of the structure in the direction B-B in FIG. 8;

Fig. 11 is a schematic structural view of another indoor unit according to an embodiment of the present disclosure, where the first air deflector is in a flat-blowing cold air supply position and the second air deflector is in a closed position;

FIG. 12 is an enlarged schematic view of the portion A in FIG. 11;

fig. 13 is a partial structural schematic view of the indoor unit of fig. 11;

fig. 14 is a schematic structural view of a driving apparatus of the indoor unit of fig. 11;

FIG. 15 is a schematic cross-sectional view of the structure of FIG. 14 taken in the direction C-C;

FIG. 16 is a schematic view of the cross-sectional structure taken in the direction D-D in FIG. 14;

fig. 17 is a schematic structural view of another indoor unit according to the embodiment of the present disclosure, where the first air deflector is in a lossless maximum air supply position and the second air deflector is in a closed position;

Fig. 18 is a partial structural schematic view of the indoor unit of fig. 17;

FIG. 19 is a schematic cross-sectional view of the E-E of FIG. 18;

FIG. 20 is a schematic cross-sectional view of the F-F direction of FIG. 18;

Fig. 21 is a schematic structural view of another indoor unit according to an embodiment of the present disclosure, where the first air deflector is in a lower blowing hot air supply position and the second air deflector is in a closed position;

fig. 22 is a schematic view of a part of the indoor unit of fig. 21;

FIG. 23 is a schematic cross-sectional view of the G-G direction of FIG. 22;

FIG. 24 is a schematic view of the cross-sectional structure in the H-H direction of FIG. 22;

fig. 25 is a schematic view of a part of another indoor unit according to an embodiment of the present disclosure, where the first air deflector and the second air deflector are both in a closed position;

fig. 26 is a schematic structural view of a driving device of the indoor unit of fig. 25;

FIG. 27 is a schematic view of the cross-sectional structure in the I-I direction of FIG. 26;

FIG. 28 is a schematic cross-sectional view of the J-J direction of FIG. 26;

FIG. 29 is a schematic view of the cross-sectional structure in the direction K-K of FIG. 26;

fig. 30 is an exploded view of a driving device of the indoor unit of fig. 25;

fig. 31 is a schematic view illustrating a structure of a third side wall of the indoor unit of fig. 25 at a viewing angle;

FIG. 32 is a schematic view of the third sidewall of FIG. 31 from another perspective;

Fig. 33 is a schematic structural view of a third link of the indoor unit of fig. 25;

fig. 34 is a schematic view of a first side wall of the indoor unit of fig. 25;

FIG. 35 is a schematic view of the first sidewall of FIG. 34 from another perspective;

Fig. 36 is a schematic view of a part of another indoor unit according to an embodiment of the present disclosure, where the first air deflector is in a lower blowing hot air supply position and the second air deflector is in an open position;

fig. 37 is a partial cross-sectional view of the indoor unit of fig. 36 in one direction;

Fig. 38 is a partial cross-sectional view of the indoor unit of fig. 36 in another direction;

fig. 39 is a partial cross-sectional view of the indoor unit of fig. 36 in yet another direction;

FIG. 40 is a schematic view of a portion of another indoor unit according to an embodiment of the present disclosure, wherein a first air deflector is in a closed position and a second air deflector is in an open position;

FIG. 41 is a schematic view of a portion of another indoor unit according to an embodiment of the present disclosure, wherein a first air deflector is in a flat-blown cold air supply position and a second air deflector is in an open position;

FIG. 42 is a schematic view of a portion of another indoor unit according to an embodiment of the present disclosure, where the first air deflector is in a maximum lossless air supply position and the second air deflector is in a closed position;

FIG. 43 is a flow chart of a design method provided by an embodiment of the present disclosure;

FIG. 44 is a schematic view of a gear and rack engagement arrangement provided by an embodiment of the present disclosure;

FIG. 45 is a schematic view of another gear and rack engagement provided by an embodiment of the present disclosure;

FIG. 46 is a schematic view of still another gear and rack engagement provided by an embodiment of the present disclosure;

FIG. 47 is a schematic view of still another gear and rack engagement provided by an embodiment of the present disclosure;

FIG. 48 is a flow chart of another design method provided by an embodiment of the present disclosure;

fig. 49 is a schematic structural view of still another indoor unit according to an embodiment of the present disclosure;

Fig. 50 is a schematic view of a part of another indoor unit according to an embodiment of the present disclosure;

fig. 51 is a schematic view of a part of still another indoor unit according to an embodiment of the present disclosure;

fig. 52 is a schematic view of a part of still another indoor unit according to an embodiment of the present disclosure;

Fig. 53 is a schematic structural view of still another indoor unit according to an embodiment of the present disclosure.

Reference numerals:

100. An indoor unit; 101. a first air deflector; 102. a connection protrusion; 103. an extension protrusion; 104. a second air deflector; 105. a first air outlet; 106. a second air outlet; 107. an air duct; 300. a driving device; 301. a first link; 302. a first gear tooth segment; 303. a third wheel tooth segment; 304. a fifth gear tooth segment; 306. a first guide part; 307. a first sub-guide; 308. a second sub-guide; 309. a first guide projection; 310. a first sub-guide projection; 311. a second sub-guide projection; 312. a connecting rod; 313. a second link; 314. a second gear tooth segment; 315. a fourth gear segment; 316. a sixth gear tooth segment; 317. a second guide part; 318. a third sub-guide; 319. a fourth sub-guide part; 320. a second guide projection; 321. a third sub-guide projection; 322. a fourth sub-guide projection; 323. a third link; 324. a seventh gear tooth segment; 325. an eighth gear tooth segment; 326. a ninth gear tooth segment; 327. arc gear tooth segments; 328. a first limit structure; 329. the first limiting protrusion; 330. a second limit structure; 331. the second limiting bulge; 5. a case body; 50. a first sidewall; 502. a first guide engaging portion; 503. a first sub-guide engaging portion; 504. a second sub-guide engaging portion; 505. a guide groove; 506. a first guide groove; 507. a first sub-guide groove; 508. a second sub-guide groove; 509. a first straight line segment; 510. a third straight line segment; 511. a fifth straight line segment; 512. a first limit matching structure; 513. a first limit groove; 515. a second sidewall; 516. a second guide engaging portion; 517. a third sub-guide engaging portion; 518. a fourth sub-guide engaging portion; 520. a third sub-guide groove; 521. a fourth sub-guide groove; 522. a second straight line segment; 523. a fourth straight line segment; 524. a sixth straight line segment; 525. a third sidewall; 526. a second limit matching structure; 527. the second limit groove; 528. a first sub-straight line segment; 529. a second sub-straight line segment; 530. a third sub straight line segment; 531. an arc section; 60. a first driving structure; 600. a drive assembly; 601. a first motor; 602. a first gear; 603. a second gear; 604. a second driving structure; 605. a second motor; 606. a third gear; 701. a gear; 702. a rack; 703. arc tooth shape; 704. straight tooth form; 705. a first linear gear tooth segment; 706. a second linear gear tooth segment; 707. and a transition gear tooth segment.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the presently disclosed embodiments. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

Referring to fig. 1-42, an embodiment of the present disclosure provides a driving device 300 for an air conditioner air deflector, the air conditioner includes an air deflector, the air deflector includes a first air deflector 101, the driving device 300 includes a first link 301 and a second link 313, and the first link 301 and the second link 313 are both adapted to be connected with the first air deflector 101.

In the opening process of the first air deflector 101, the motion tracks of the first connecting rod and the second connecting rod all comprise linear motion tracks in different directions. For example, the first link or the second link firstly makes a section of rectilinear motion in a first direction, then makes an arc motion, and then makes a section of rectilinear motion in a second direction, wherein the first direction and the second direction are not coincident and are not parallel.

Alternatively, the first link 301 and the second link 313 each perform a folding line movement. In other words, during the opening process of the first air deflector 101, the first connecting rod 301 sequentially makes linear movements in different directions, and the second connecting rod 313 also sequentially makes linear movements in different directions.

On one hand, the movement mode of the fold line can realize the great change of the movement direction of the first connecting rod 301 and the second connecting rod 313, so that the movement position of the first air deflector 101 can be greatly changed, and the first air deflector 101 can realize various air guiding modes; on the other hand, the movement stroke in the up-down direction of the first link 301 and the second link 313 can be reduced, reducing the space occupied in the up-down direction of the driving device 300.

As shown in fig. 3, the driving device 300 further includes a connecting rod 312, the first connecting rod 301 is connected with the first air deflector 101 through the connecting rod 312, and the first connecting rod 301 is rotatably connected with one end of the connecting rod 312, and the other end of the connecting rod 312 is rotatably connected with the first air deflector 101; the second link 313 is rotatably connected to the first air deflector 101.

The first link 301 is rotatably connected to the first air deflector 101 via the connecting rod 312, and the second link 313 is directly rotatably connected to the first air deflector 101, so that the first link 301 and the second link 313 have different driving capacities for the first air deflector 101 when the movement trajectories are the same. By this arrangement, different positions of the first air guide plate 101 are realized in cooperation with different movement trajectories of the first link 301 and the second link 313.

Alternatively, as shown in fig. 4, 6, 9 and 10, during the opening of the first air deflector 101, the first link 301 moves along the first straight line segment 509, and the second link 313 moves along the second straight line segment 522; wherein, during the opening process of the first air deflector 101, the first straight line segment 509 and the second straight line segment 522 are inclined downward along the extending direction of the first connecting rod 301, i.e. along the direction from back to front, so that the first connecting rod 301 and the second connecting rod 313 are both moved downward.

The first straight line segment 509 is less sloped than the second straight line segment 522. In this way, during the opening process of the first air deflector 101, compared with the first connecting rod 301, the movement direction of the second connecting rod 313 is more downward, and because the second connecting rod 313 is directly connected with the first air deflector 101 in a rotating way, the second connecting rod 313 can drive the first air deflector 101 to move in a large extent. Therefore, the inclination degree of the first straight line segment 509 is set to be smaller than that of the second straight line segment 522, so that the second connecting rod 313 can greatly drive the first air deflector 101 to overturn downwards, and the first air deflector 101 reaches the position of flat blowing cold air supply by matching with the movement of the connecting rod 312 and the first connecting rod 301. The air guiding surface of the first air guiding plate 101 is defined as a first air guiding surface 108, and the first air guiding surface faces upwards, so that a flat blowing cold air supply mode is realized.

As shown in fig. 12, the first air guiding surface is provided with one connection protrusion 102, and the number of connection protrusions 102 is one.

The second connecting rod 313 and the connecting rod 312 are rotatably connected with the connecting protrusion 102 and are respectively positioned at two opposite sides of the connecting protrusion 102, so as to avoid mutual interference during the movement of the second connecting rod 313 and the connecting rod 312 or mutual interference during the movement of the second connecting rod 313 and the first connecting rod 301.

The second link 313 and the link 312 may also be located on the same side of the connection protrusion 102. At this time, one of the second connection rod 313 and the connection protrusion 102 is provided with the extension protrusion 103, and the extension protrusion 103 is disposed between the second connection rod 313 and the connection protrusion 102 to increase the distance between the second connection rod 313 and the connection protrusion 102, so as to avoid mutual interference during the movement of the second connection rod 313 and the connection rod 312 or mutual interference during the movement of the second connection rod 313 and the first connection rod 301. Or one of the connecting rod 312 and the connecting protrusion 102 is provided with the extending protrusion 103, and the extending protrusion 103 is arranged between the connecting rod 312 and the connecting protrusion 102 to increase the distance between the connecting rod 312 and the connecting protrusion 102, so as to avoid mutual interference during the movement of the second connecting rod 313 and the connecting rod 312 or mutual interference during the movement of the second connecting rod 313 and the first connecting rod 301.

Alternatively, as shown in fig. 16, during the opening process of the first air deflector 101, the first connecting rod 301 moves along the first straight line segment 509 and the third straight line segment 510, and the second connecting rod 313 moves along the second straight line segment 522 and the fourth straight line segment 523; the first straight line segment 509 intersects with the straight line in which the third straight line segment 510 is located, the second straight line segment 522 intersects with the straight line in which the fourth straight line segment 523 is located, and in the opening process of the first air deflector 101, along the extending direction of the first link 301, the third straight line segment 510 is inclined downward, and the fourth straight line segment 523 is inclined upward.

As shown in fig. 15 and 16, in the process of opening the first air deflector 101, the folding line movement track of the first link 301 includes a first straight line segment 509 and a third straight line segment 510, and the first link 301 moves along the first straight line segment 509 and then moves along the third straight line segment 510, the folding line movement track of the second link 313 includes a second straight line segment 522 and a fourth straight line segment 523, and the second link 313 moves along the second straight line segment 522 and then moves along the fourth straight line segment 523.

During the opening process of the first air deflector 101, the fourth straight line segment 523 is inclined upward in the back-to-front direction, that is, the second connecting rod 313 is inclined upward, so as to drive the first air deflector 101 to move upward. The third straight line segment 510 is inclined downward, i.e. the first link 301 continues to move obliquely downward, and the directions of movement of the first link 301 and the second link 313 are opposite. Through the rotational connection between the first connecting rod 301 and the connecting rod 312 and the rotational connection between the connecting rod 312 and the first air deflector 101, the first air deflector 101 moves upwards and faces downwards, and the first air deflector 101 is positioned at a lower blowing hot air supply position, so that a lower blowing hot air supply mode is realized.

Alternatively, the connection between the first straight line segment 509 and the third straight line segment 510 corresponds to the connection between the second straight line segment 522 and the fourth straight line segment 523, that is, when the first link 301 moves from moving along the first straight line segment 509 to moving along the third straight line segment 510, the second link 313 just moves from moving along the second straight line segment 522 to moving along the fourth straight line segment 523, so that the first link 301 and the second link 313 cooperate to jointly drive the first air deflector 101 to move to the target position.

Optionally, during the opening process of the first air deflector 101, the first connecting rod 301 moves along the third straight line segment 510 and the fifth straight line segment 511, and the second connecting rod 313 moves along the fourth straight line segment 523 and the sixth straight line segment 524; wherein the straight line where the third straight line segment 510 and the fifth straight line segment 511 are located intersects, and the straight line where the fourth straight line segment 523 and the sixth straight line segment 524 are located intersects.

As shown in fig. 19 and 20, in the opening process of the first air deflector 101, the folding line movement track of the first connecting rod 301 includes a first straight line segment 509, a third straight line segment 510 and a fifth straight line segment 511 which are sequentially connected, and the first connecting rod 301 moves along the first straight line segment 509, the third straight line segment 510 and the fifth straight line segment 511, the folding line movement track of the second connecting rod 313 includes a second straight line segment 522, a fourth straight line segment 523 and a sixth straight line segment 524, and the second connecting rod 313 moves along the second straight line segment 522, the fourth straight line segment 523 and the sixth straight line segment 524.

During the opening of the first air deflector 101, the fifth straight line segment 511 is inclined upward or extends in the horizontal direction in the extending direction of the first link 301, i.e., in the back-to-front direction, and the sixth straight line segment 524 is inclined upward.

The sixth straight segment 524 is inclined upward in the back-to-front direction. In this way, when the second connecting rod 313 moves along the sixth straight line segment 524 during the opening process of the first air deflector 101, the second connecting rod 313 tilts upwards to continuously drive the first air deflector 101 to move upwards.

In the case where the fifth straight line segment 511 is inclined upward, the first link 301 is inclined upward as the first link 301 moves along the fifth straight line segment 511 in the back-to-front direction; in the case where the fifth straight line segment 511 extends in the horizontal direction, when the first link 301 moves in the fifth straight line segment 511 in the back-to-front direction, the first link 301 moves in the horizontal direction.

Optionally, fourth straight line segment 523 is less sloped than sixth straight line segment 524. Thus, the movement inclination degree of the second connecting rod 313 is larger when the second connecting rod 313 moves upwards along the sixth straight line segment 524 than when the second connecting rod 313 moves upwards along the fourth straight line segment 523, so that the upward movement amplitude of the second connecting rod 313 when moving along the sixth straight line segment 524 is larger, and the first air deflector 101 is driven to continue to move upwards and move to the lossless maximum air supply position.

The air conditioner comprises an indoor unit 100 and an outdoor unit, wherein the indoor unit 100 and the outdoor unit are connected through an on-line pipe, and circulation of a refrigerant in the indoor unit 100 and the outdoor unit is realized.

The indoor unit 100 includes a housing, an evaporator, and a fan, the housing defines an air duct 107, the evaporator and the fan are disposed in the air duct 107, and the housing is further provided with an air inlet and an air outlet. Under the action of the fan, air enters the air duct 107 from the air inlet, exchanges heat with the evaporator and flows out from the air outlet.

The air outlet comprises a first air outlet 105, and the first air deflector 101 is movably arranged at the first air outlet 105 and is used for opening or closing the first air outlet 105. The air duct 107 includes a first air duct, which is disposed corresponding to the first air outlet 105.

The lossless maximum air supply mode includes two situations, in the first situation, as shown in fig. 17, the first air deflector 101 is located above the upper edge extension line of the first air duct, and does not participate in air guiding, and does not affect the air outlet direction of the first air outlet 105.

In the second case, as shown in fig. 42, the first air deflector 101 is located in the first air duct and is parallel to the air outlet direction of the first air duct, and the air flows on the upper surface and the lower surface of the first air deflector 101 pass through, so that the condensation phenomenon of the first air deflector 101 can be eliminated. Wherein, the lower surface is the first wind-guiding face at this moment.

As shown in fig. 17 to 20, when the fifth straight line segment 511 is inclined upward in the back-to-front direction, the inclination degree of the fifth straight line segment 511 is smaller than that of the sixth straight line segment 524, and the second connecting rod 313 drives the first air deflector 101 to continue to move upward, and simultaneously, the first connecting rod 301 and the connecting rod 312 cooperate to realize the continuous upward rotation of the first air guiding surface, so that the first air deflector 101 moves to the lossless maximum air supply position, and the lossless maximum air supply mode of the first case is realized.

As shown in fig. 42, when the fifth straight line segment 511 extends in the horizontal direction, the maximum air supply position without damage of the first air guide plate 101 is lower than the maximum air supply position without damage of the first air guide plate 101 when the fifth straight line segment 511 is inclined upward, and at this time, the maximum air supply mode without damage of the second case can be realized.

Optionally, the junction of the third straight line segment 510 and the fifth straight line segment 511 corresponds to the junction of the fourth straight line segment 523 and the sixth straight line segment 524. That is, when the first link 301 moves from moving along the third straight line segment 510 to moving along the fifth straight line segment 511, the second link 313 just moves from moving along the fourth straight line segment 523 to moving along the sixth straight line segment 524, so that the first link 301 and the second link 313 cooperate to jointly drive the first air deflector 101 to move to the target position.

The driving device 300 further comprises a driving assembly 600, the driving assembly 600 is in driving connection with the first connecting rod 301 and the second connecting rod 313, wherein in the opening process of the first air deflector 101, the driving assembly 600 drives the first connecting rod 301 and the second connecting rod 313 to move, and the movement speed of the first connecting rod 301 is smaller than that of the second connecting rod 313.

The second connecting rod 313 is directly and rotatably connected with the first air deflector 101, and the second connecting rod 313 needs to be rotatably connected with the first air deflector 101 through the connecting rod 312, so that the position adjusting capability of the second connecting rod 313 on the first air deflector 101 is stronger. Therefore, the movement speed of the first link 301 is set to be smaller than that of the second link 313.

The driving device 300 further comprises a limiting piece, the limiting piece is matched with the first connecting rod 301 and the second connecting rod 313, and in the opening process of the first air deflector 101, under the action of the driving assembly 600, the first connecting rod 301 and the second connecting rod 313 are matched with the limiting piece so as to guide the first connecting rod 301 and the second connecting rod 313 to do at least partial linear motion.

The drive assembly 600 provides power to the movement of the first and second links 301, 313 and the stop provides a constraint to the movement of the first and second links 301, 313 such that the first and second links 301, 313 each move at least partially linearly.

Optionally, the first connecting rod 301 is provided with a first guiding portion 306, the second connecting rod 313 is provided with a second guiding portion 317, and the limiting member is matched with the first guiding portion 306 and matched with the second guiding portion 317 under the action of the driving assembly 600 in the opening process of the first air deflector 101, so as to guide the first connecting rod 301 and the second connecting rod 313 to perform folding line movement.

Alternatively, as shown in fig. 3, the first link 301 is provided with first gear teeth, the second link 313 is provided with second gear teeth, and the driving assembly 600 includes a motor, a first gear 602, and a second gear 603. For convenience of description, the first motor 601 will be referred to herein as a first motor 601.

The first motor 601 is in driving connection with the first gear 602 and the second gear 603, and drives the first gear 602 and the second gear 603 to rotate in the same direction. The first gear 602 is meshed with the first gear teeth to drive the first link 301 to move; the second gear 603 is meshed with the second gear teeth to drive the second connecting rod 313 to move; wherein the first gear 602 and the second gear 603 are coaxially arranged and the radius of the first gear 602 is smaller than the radius of the second gear 603.

The first gear 602 and the second gear 603 are coaxially arranged, so that the first gear 602 and the second gear 603 are conveniently connected with the first motor 601, and the first motor 601 can drive the first gear 602 and the second gear 603 to rotate at the same time.

The angular velocities of the first gear 602 and the second gear 603 are the same, the radius of the first gear 602 is smaller than the radius of the second gear 603, such that the linear velocity of the first gear 602 is smaller than the linear velocity of the second gear 603, such that the movement velocity of the first link 301 is smaller than the movement velocity of the second link 313.

It is also possible that the linear speed of the first gear 602 is equal to the linear speed of the second gear 603 so that the movement speed of the first link 301 is equal to the movement speed of the second link 313.

Alternatively, as shown in fig. 5 and 7, the first gear tooth includes a first gear tooth segment 302 and the second gear tooth includes a second gear tooth segment 314, and the first gear tooth segment 302 and the second gear tooth segment 314 correspond to each other and are both straight segments.

Since the first gear segment 302 and the second gear segment 314 are both straight segments, when the first gear 602 is meshed with the first gear segment 302, the second gear 603 is meshed with the second gear segment 314, and at this time, the first link 301 moves linearly along the first straight segment 509, and the second link 313 moves linearly along the second straight segment 522.

The first cog segment 302 is inclined downward and the second cog segment 314 is inclined downward in the back-to-front direction, and the degree of inclination of the first cog segment 302 is smaller than the degree of inclination of the second cog segment 314.

As shown in fig. 13, when the first gear 602 is engaged with the first gear segment 302, the second gear 603 is engaged with the second gear segment 314, the first link 301 moves downward, the second link 313 moves downward, and the first air deflector 101 opens downward. Since the inclination degree of the first gear tooth segment 302 is smaller than that of the second gear tooth segment 314, the inclination degree of the downward movement of the first connecting rod 301 is smaller than that of the downward movement of the second connecting rod 313, and the first air deflector 101 greatly moves downward under the guidance of the second connecting rod 313 to drive the first air deflector 101 to move to the position of flat blowing cold air supply.

Optionally, as shown in fig. 5 and fig. 7, the first gear teeth further include a linear third gear tooth segment 303, and during the opening process of the first air deflector 101, the first gear 602 is meshed with the first gear tooth segment 302 and the third gear tooth segment 303 in sequence, and in the closed state of the first air deflector 101, the third gear tooth segment 303 is inclined downwards along the back-to-front direction, and a folding angle is formed at the connection position of the third gear tooth segment 303 and the first gear tooth segment 302; the second gear teeth further comprise a linear fourth gear tooth segment 315, and in the opening process of the first air deflector 101, the second gear 603 is meshed with the second gear tooth segment 314 and the fourth gear tooth segment 315 successively, and in the closing state of the first air deflector 101, the fourth gear tooth segment 315 is inclined upwards along the back-to-front direction.

As shown in fig. 21, when the first gear 602 is meshed with the third gear segment 303, the second gear 603 is meshed with the fourth gear segment 315, the first link 301 is moved obliquely downward along the third straight line segment 510, and the second link 313 is moved obliquely upward along the fourth straight line segment 523, so that the first air deflector 101 is turned upward under the guidance of the second link 313 and moves to the lower blowing hot air supply position.

Optionally, the first gear tooth segment 302 is inclined to a greater extent than the third gear tooth segment 303, so that the first gear 602 is meshed with the first gear tooth segment 302, and the first connecting rod 301 moves downwards to a greater extent than the first gear 602 is meshed with the third gear tooth segment 303, so that the first air deflector 101 is turned upwards under the driving of the second connecting rod 313 when the first gear 602 is meshed with the third gear tooth segment 303.

Optionally, as shown in fig. 5 and fig. 7, the first gear teeth further include a fifth gear tooth segment 304 in a straight line shape, and during the opening process of the first air deflector 101, the first gear 602 is sequentially meshed with the third gear tooth segment 303 and the fifth gear tooth segment 304, and in the closed state of the first air deflector 101, the fifth gear tooth segment 304 is inclined upward (as shown in fig. 5) or extends horizontally (as shown in fig. 30) along the back-to-front direction; the second gear teeth further comprise a linear sixth gear tooth segment 316, in the opening process of the first air deflector 101, the first gear 602 is meshed with the fourth gear tooth segment 315 and the sixth gear tooth segment 316 in sequence, and in the closing process state of the first air deflector 101, the sixth gear tooth segment 316 is inclined upwards in the back-to-front direction, and a folding angle is formed at the joint of the sixth gear tooth segment 316 and the fourth gear tooth segment 315.

As shown in fig. 17, when the first gear 602 is meshed with the fifth gear segment 304, the second gear 603 is meshed with the sixth gear segment 316, the first link 301 moves along the fifth straight segment 511, and the second link 313 moves along the sixth straight segment 524. When the first air deflector 101 is in a closed state and in the back-to-front direction, the fifth gear tooth segment 304 and the sixth gear tooth segment 316 are both inclined upwards, the first connecting rod 301 and the second connecting rod 313 are both inclined upwards, so that the first air deflector 101 is driven to continue to move upwards to the lossless maximum air supply position, and the lossless maximum air supply mode of the first situation is realized. When the sixth gear tooth segment 316 is inclined upward and the fifth gear tooth segment 304 is horizontally extended in the back-to-front direction in the closed state of the first air guide plate 101, the first link 301 horizontally moves, and the second link 313 is inclined upward, so that the first air guide plate 101 is driven to continue to move upward to the lossless maximum air supply position, and as shown in fig. 42, the lossless maximum air supply mode of the second case is realized.

Optionally, the fourth gear segment 315 is inclined to a lesser extent than the sixth gear segment 316, such that the second link 313 moves upward to a greater extent when the first gear 602 is engaged with the sixth gear segment 316 than the second link 313 moves upward when the first gear 602 is engaged with the fourth gear segment 315, such that the first gear 602 is engaged with the sixth gear segment 316 to move the second link 313 substantially upward to move the first air deflector 101 to the maximum air delivery position.

Alternatively, in the case where the fifth cog segment 304 is inclined upward in the back-to-front direction in the closed state of the first air deflector 101, the degree of inclination of the fifth cog segment 304 is smaller than that of the sixth cog segment 316.

Thus, when the first gear 602 is meshed with the fifth gear tooth segment 304, the upward inclination degree of the first connecting rod 301 is smaller than that of the second connecting rod 313 when the second gear 603 is meshed with the sixth gear tooth segment 316, so that the second connecting rod 313 mainly drives the first air deflector 101 to continue to move upwards, and the first connecting rod 301 and the connecting rod 312 cooperate to drive the first air deflector 101 to move to the lossless maximum air supply position.

Optionally, as shown in fig. 25 to 42, the air deflector further includes a second air deflector 104, the air outlet includes a second air outlet 106, and the air duct includes a second air duct, and the second air duct is in communication with the second air outlet. The second air deflector 104 is movably disposed at the second air outlet 106, and is used for opening or closing the second air outlet 106. The second air outlet 106 is located above the first air outlet 105.

The driving device 300 further comprises a third connecting rod 323, the third connecting rod 323 is connected with the second air deflector 104, and the third connecting rod 323 sequentially performs folding line movement and arc movement in the opening process of the second air deflector 104.

The second air deflector 104 firstly moves in a fold line, and the position of the second air deflector 104 is firstly adjusted, instead of directly screwing out the second air deflector 104, so that the second air deflector 104 can be pushed out outwards (forwards) first, and interference between the second air deflector 104 and the first air deflector 101 or the shell is avoided.

After the second air deflector 104 performs the folding line movement, it is rotated out along the arc shape, as shown in fig. 36, so as to realize horizontal upward blowing (when the second air deflector is in the open position). The air guiding surface of the second air guiding plate 104 is a second air guiding surface, and at this time, the second air guiding surface 109 faces upward.

Optionally, as shown in fig. 34, during the opening process of the second air deflector 104, the third connecting rod 323 moves along the first sub-straight line segment 528 and the second sub-straight line segment 529 sequentially, where the first sub-straight line segment 528 extends outwards (horizontally), and the second straight line segment 522 is obliquely arranged along the extending direction of the third connecting rod 323.

In the case where the second air deflection 104 is located above the first air deflection 101, the second straight sub-section 529 may be inclined upward, and the first straight sub-section 528 may extend horizontally or may be inclined upward.

In the process of opening the second air deflector 104, the third connecting rod 323 firstly moves linearly along the first sub-linear section 528 and then moves linearly along the second sub-linear section 529. The first sub-straight line segment 528 extends outwards, and when the second air deflector 104 is opened, the third connecting rod 323 pushes outwards when moving along the first sub-straight line segment 528, so as to drive the second air deflector 104 to push outwards, and interference between the second air deflector 104 and the first air deflector 101 or the shell is avoided. The third link 323 then moves along the second sub-linear segment 529. Along the direction from back to front, the second straight sub-section 529 tilts upward, the third connecting rod 323 moves obliquely upward, and drives the second air deflector 104 to move obliquely upward, so that the distance between the second air deflector 104 and the first air deflector 101 is further increased, and preparation is made for subsequent rotation of the second air deflector 104.

The first sub-straight line segment 528 may extend in a horizontal direction, or may slightly incline upward in a back-to-front direction, where the inclination is smaller than that of the second sub-straight line segment 529, for example, the angle between the first sub-straight line segment 528 and the horizontal direction is smaller than or equal to 10 °, and the inclination of a smaller angle may also ensure that the second air deflector 104 does not interfere with the housing when the third link 323 moves along the first sub-straight line segment 528.

Optionally, during the opening process of the second air deflector 104, the third connecting rod 323 makes a linear motion along the first sub-linear segment 528, the second sub-linear segment 529 and the third sub-linear segment 530 in sequence, where, along the extending direction of the third connecting rod 323, the third sub-linear segment 530 is inclined upwards and the inclination degree is greater than that of the second sub-linear segment 529.

During the opening process of the second air deflector 104, the third connecting rod 323 moves along the first sub-straight line segment 528, the second sub-straight line segment 529, the third sub-straight line segment 530 and the arc. The third sub-straight segment 530 is inclined upward in the back-to-front direction and the third link 323 continues to move obliquely upward. At this time, after the third connecting rod 323 moves along the first sub-straight line segment 528 and the second sub-straight line segment 529, the distance between the second air deflector 104 and the housing is larger, so that the second air deflector 104 can move upwards to a larger extent at this time, and is guaranteed not to collide with the housing. Therefore, the third straight sub-line segment 530 is designed to have a larger inclination than the second straight sub-line segment 529, and the third link 323 moves obliquely upward along the third straight sub-line segment 530 to have a larger inclination than the second straight sub-line segment 529, so that the distance between the second air guide plate 104 and the first air guide plate 101 can be increased more effectively.

Optionally, the length of the polyline is less than the length of the arc, where the length of the polyline refers to the sum of the lengths of all straight line segments included by the polyline, such as the sum of the lengths of the first, second, and third sub-straight line segments 528, 529, 530.

The folding line mainly functions to drive the second air deflector 104 to move upwards and outwards, and prevent the second air deflector 104 from interfering with the first air deflector 101 or the housing, so that the folding line does not need to be too long. Too long increases the movement stroke of the third link 323, increasing the space occupied by the driving device 300.

As shown in fig. 30 and 33, the driving device 300 further includes a second motor 605 and a third gear 606. The second motor 605 is drivingly connected to the third gear 606 for driving the third gear 606 to rotate. The third connecting rod 323 is provided with third gear teeth meshed with the third gear 606, and the third gear teeth comprise a seventh gear tooth segment 324, an eighth gear tooth segment 325, a ninth gear tooth segment 326 and an arc gear tooth segment 327.

During the opening process of the second air deflector 104, the seventh gear tooth segment 324, the eighth gear tooth segment 325, the ninth gear tooth segment 326 and the arc gear tooth segment 327 are sequentially meshed with the third gear 606. The seventh gear tooth segment 324, the eighth gear tooth segment 325 and the ninth gear tooth segment 326 are straight lines, and the arc gear tooth segment 327 is arc-shaped.

When the third gear 606 is meshed with the seventh gear tooth segment 324, the third connecting rod 323 moves along the first sub-straight line segment 528; when the third gear 606 is meshed with the eighth gear tooth segment 325, the third link 323 moves along the second sub-linear segment 529; when the third gear 606 is engaged with the ninth gear tooth segment 326, the third link 323 moves along the third sub-linear segment 530; when the third gear 606 is engaged with the curved gear tooth segment 327, the third link 323 moves in an arc.

The drive device 300 drives a mechanism that includes a first drive structure 60 and a second drive structure 604. The first driving structure 60 is in driving connection with the first air deflector 101; the second driving structure 604 is in driving connection with the second air deflector 104. The first drive structure 60 comprises a drive assembly 600 and a link, wherein the link comprises a first link 301 and a second link 313; the second driving structure 604 includes a third link 323 and a driving member for driving movement of the third link 323, for example, as shown in fig. 30, the driving member including a third gear 606 and a second motor 605.

The limiting piece comprises a box body 5 which is fixed on the shell. As shown in fig. 25 and 30, the case 5 includes a first sidewall 50, and the first sidewall 50 is disposed between a first driving structure 60 and a second driving structure 604.

The first sidewall 50 isolates the first driving structure 60 from the second driving structure 604, avoiding interference during movement of the first driving structure 60 and the second driving structure 604.

Optionally, as shown in fig. 33, the third link 323 is provided with a first limiting structure 328; as shown in fig. 30, the first side wall 50 is provided with a first guiding and matching portion 502 and a first limiting and matching structure 512, the first guiding portion is matched with the first guiding and matching portion 502 to guide the first driving structure 60 to drive the first air deflector 101 to move, and the first limiting and matching structure 328 is matched with the first limiting and matching structure 512 to guide the second driving structure 604 to drive the second air deflector 104 to move.

The first side wall 50 can guide the first driving structure 60 and the second driving structure 604, so that the effect of the first side wall 50 is increased, and the integration level of the driving device 300 is improved.

The first guiding engaging portion 502 is disposed on a surface of the first sidewall 50 facing the first driving structure 60, so as to facilitate the engagement of the first guiding engaging portion 502 with the first guiding portion; the first limit engaging structure 512 is disposed on a surface of the first sidewall 50 facing the second driving structure 604, so as to facilitate the engagement of the first limit engaging structure 512 with the first limit structure 328.

Optionally, a surface of the first sidewall 50 facing the first driving structure 60 or a surface facing the second driving structure 604 is provided with a bump 708, where the first guiding engaging portion 502 and the first limiting engaging structure 512 are both provided.

The thickness of the first sidewall 50 where the bump is disposed is increased, so that the strength is increased, and thus the strength of the first guide engaging portion 502 and the first limit engaging structure 512 is increased. The thickness of the first side wall 50 where the bump is not arranged is unchanged, so that the cost of the first side wall 50 is reduced as much as possible.

As shown in fig. 30, after the bump is disposed, the first guiding and matching portion 502 and the first limiting and matching structure 512 are slots, and the slot opening of the first limiting and matching structure 512 is flush with the slot bottom wall of the first guiding and matching portion 502, so as to ensure that the slots of the first guiding and matching portion 502 and the first limiting and matching structure 512 are deep enough.

The connecting rod is arranged in the box body 5. The connecting rod is provided with a guide part; the box body 5 is provided with a guide matching part, and the guide part is matched with the guide matching part so as to guide the connecting rod to do broken line movement.

Optionally, the connecting rod includes a first connecting rod 301 drivingly connected to the guide plate, the guide portion includes a first guide portion 306 provided on the first connecting rod 301, the first sidewall 50 is provided with a first guide engaging portion 502, and the first guide portion 306 and the first guide engaging portion 502 are engaged to guide the first connecting rod 301 to perform a folding line motion, where the guide engaging portion includes the first guide engaging portion 502.

The first gear 602 provides power for the movement of the first connecting rod 301, and the first guide portion 306 and the first guide matching portion 502 are matched to limit the movement track of the first connecting rod 301 and realize the broken line movement of the first connecting rod 301.

Alternatively, as shown in fig. 5 and 6, the first guide portion 306 includes a first sub-guide portion 307 and a second sub-guide portion 308, the first guide engaging portion 502 includes a first sub-guide engaging portion 503 and a second sub-guide engaging portion 504, and the first sub-guide portion 307 and the first sub-guide engaging portion 503 are engaged, and the second sub-guide portion 308 and the second sub-guide engaging portion 504 are engaged to collectively guide the first link 301 to perform the folding line movement.

The first sub-guide 307 and the second sub-guide 308 are provided, and the first sub-guide mating 503 and the second sub-guide mating 504 are provided correspondingly, so that there are a plurality of guide portions between the first link 301 and the first sidewall 50, thereby guiding the first link 301 to smoothly perform the folding line movement. Especially, in the case of a large length of the first link 301, if there is only one guide portion between the first link 301 and the first sidewall 50, the movement of the first link 301 may be unstable, if it is separated from the first sidewall 50 or a jam occurs at the bending portion of the fold line.

Alternatively, the first sub-guide 307 and the second sub-guide 308 are sequentially disposed along the length direction of the first link 301 to guide the first link 301 to smoothly perform the folding line movement everywhere in the length direction.

The first sub-guide engaging portion 503 and the second sub-guide engaging portion 504 are provided in order in the front-rear direction.

Optionally, as shown in fig. 7, the connecting rod further includes a second connecting rod 313, the guide portion further includes a second guide portion 317 provided on the second connecting rod 313, and the case 5 includes a second side wall 515 disposed opposite to the first side wall 50. The first driving structure 60 is disposed between the first sidewall 50 and the second sidewall 515.

As shown in fig. 4, the second sidewall 515 is provided with a second guide engaging portion 516, and the second guide portion 317 and the second guide engaging portion 516 are engaged to guide the second link 313 to perform the folding line movement, wherein the guide engaging portion further includes the second guide engaging portion 516.

The second gear 603 provides power for the movement of the second connecting rod 313, and the second guide portion 317 and the second guide matching portion 516 are matched to limit the movement track of the second connecting rod 313, so that the folding line movement of the second connecting rod 313 is realized.

Optionally, the second guiding portion 317 includes a third sub-guiding portion 318 and a fourth sub-guiding portion 319, the second guiding engaging portion 516 includes a third sub-guiding engaging portion 517 and a fourth sub-guiding engaging portion 518, the third sub-guiding portion 318 and the third sub-guiding engaging portion 517 are engaged, and the fourth sub-guiding portion 319 and the fourth sub-guiding engaging portion 518 are engaged to guide the second link 313 in a folding line movement together.

The third sub-guide portion 318 and the fourth sub-guide portion 319 are provided, and the third sub-guide mating portion 517 and the fourth sub-guide mating portion 518 are provided correspondingly, so that there are a plurality of guide portions between the second link 313 and the second side wall 515, thereby guiding the second link 313 to smoothly perform the folding line movement. Particularly, in the case of a large length of the second link 313, if there is only one guide portion between the second link 313 and the second side wall 515, the movement of the second link 313 may be unstable, if it is separated from the second side wall 515 or a jam occurs at the bent portion of the fold line.

Alternatively, the third sub-guide 318 and the fourth sub-guide 319 are sequentially disposed along the length direction of the second link 313 to guide the second link 313 to smoothly perform the folding line movement everywhere in the length direction.

The third sub-guide engaging portion 517 and the fourth sub-guide engaging portion 518 are disposed in order in the front-rear direction.

Optionally, an orthographic projection of the first guide mating portion 502 on the second sidewall 515 at least partially overlaps the second guide mating portion 516.

In this way, during the opening process of the first air deflector 101, the movement tracks of the first link 301 and the second link 313 at least partially overlap, but not completely do not overlap, so that the space occupied by the whole of the movement process of the first link 301 and the second link 313 is reduced, and the space occupied by the whole driving device 300 is reduced.

Optionally, an orthographic projection of the first guide mating portion 502 on the second sidewall 515 intersects the second guide mating portion 516.

In the opening process of the first air deflector 101, the first connecting rod 301 and the second connecting rod 313 move downwards, and the inclination degree of the first connecting rod 301 is smaller than that of the second connecting rod 313 until the first air deflector 101 is in a horizontal refrigeration position; subsequently, the first link 301 continues to move downward and the second link 313 moves upward until the first air deflector 101 is in the lower blowing hot position. Accordingly, when the first air deflector 101 moves from the horizontal cooling position toward the lower blowing hot position, the movement trajectories of the first link 301 and the second link 313 intersect, and therefore, the orthographic projection of the first guide engaging portion 502 on the second side wall 515 intersects the second guide engaging portion 516, thereby realizing that the first air deflector 101 can have the horizontal cooling position and the lower blowing hot position.

Optionally, the orthographic projection of the first sub-guide mating part 503 on the second sidewall 515 overlaps with the third sub-guide mating part 517, and the orthographic projection of the second sub-guide mating part 504 on the second sidewall 515 overlaps with the fourth sub-guide mating part 518.

Optionally, an orthographic projection of the first sub-guide mating part 503 on the second sidewall 515 intersects the third sub-guide mating part 517, and an orthographic projection of the second sub-guide mating part 504 on the second sidewall 515 intersects the fourth sub-guide mating part 518.

Alternatively, one of the guide portion and the guide engaging portion is a guide groove 505, and the other is a guide projection provided in the guide groove and movable with respect to the guide groove.

The guide bulge is matched with the guide groove, and the guide bulge moves relative to the guide groove to realize the guide of the box body 5 to the connecting rod and guide the connecting rod to do broken line movement.

Optionally, the guide groove is in a fold line shape.

As shown in fig. 5 and 6, the first guide 306 includes a first guide protrusion 309, and the first guide mating portion 502 includes a first guide groove 506, and the first guide protrusion 309 is located in the first guide groove 506 and is movable with respect to the first guide groove 506. As shown in fig. 7, the second guide 317 includes a second guide protrusion 320, and the second guide mating portion 516 includes a second guide groove 519 in which the second guide protrusion 320 is located and movable with respect to the second guide groove. Wherein the guide protrusions include first and second guide protrusions 320, and the guide grooves include first and second guide grooves.

The first sub-guide 307 is a first sub-guide protrusion 310, the first sub-guide mating part 503 is a first sub-guide groove 507, and the first sub-guide protrusion 310 is located in the first sub-guide groove 507 and is movable relative to the first sub-guide groove 507. The second sub-guide portion 308 is a second sub-guide protrusion 311, and the second sub-guide mating portion 504 is a second sub-guide groove 508, and the second sub-guide protrusion 311 is located in the second sub-guide groove 508 and is movable relative to the second sub-guide groove 508. Wherein the first guide protrusion 309 comprises a first sub-guide protrusion 310 and a second sub-guide protrusion 311, and the first guide groove 506 comprises a first sub-guide groove 507 and a second sub-guide groove 508.

The first sub-guide groove 507 and the second sub-guide groove 508 each include a first straight line segment 509, a third straight line segment 510, and a fifth straight line segment 511, which are sequentially arranged in a back-to-front direction, that is, the first sub-guide groove 507 and the second sub-guide groove 508 are each in a polygonal line shape. In this way, during the opening process of the first air deflector 101, the first sub-guiding protrusion 310 and the second sub-guiding protrusion 311 respectively move along the first straight line segment 509 of the first sub-guiding slot 507 and the second sub-guiding slot 508, so as to guide the first connecting rod 301 to move along the first straight line segment 509; then the first sub-guide projection 310 and the second sub-guide projection 311 move along the third straight line segment 510 of the first sub-guide groove 507 and the second sub-guide groove 508, respectively, guiding the first link 301 to move along the third straight line segment 510; finally, the first sub-guide protrusion 310 and the second sub-guide protrusion 311 move along the fifth straight line segment 511 of the first sub-guide groove 507 and the second sub-guide groove 508, respectively, and guide the first link 301 to move along the fifth straight line segment 511.

As shown in fig. 4 and 7, the third sub-guide part 318 is a third sub-guide protrusion 321, the third sub-guide mating part 517 is a third sub-guide groove 520, and the third sub-guide protrusion 321 is located in the third sub-guide groove 520 and is movable with respect to the third sub-guide groove 520. The fourth sub-guide 319 is a fourth sub-guide protrusion 322, the fourth sub-guide mating 518 is a fourth sub-guide slot 521, and the fourth sub-guide protrusion 322 is located in the fourth sub-guide slot 521 and is movable relative to the fourth sub-guide slot 521. Wherein the second guide projection 320 includes third and fourth sub-guide projections 322, and the second guide groove includes third and fourth sub-guide grooves 521.

The third sub-guide groove 520 and the fourth sub-guide groove 521 each include a second straight line segment 522, a fourth straight line segment 523, and a sixth straight line segment 524, which are sequentially disposed in a back-to-front direction, that is, the third sub-guide groove 520 and the fourth sub-guide groove 521 each have a polygonal line shape. Thus, during the opening process of the first air deflector 101, the third sub-guide protrusion 321 and the fourth sub-guide protrusion 322 move along the second straight line segment 522 of the third sub-guide groove 520 and the fourth sub-guide groove 521, respectively, so as to guide the second connecting rod 313 to move along the second straight line segment 522; then, the third sub-guide protrusion 321 and the fourth sub-guide protrusion 322 move along the fourth straight line segment 523 of the third sub-guide groove 520 and the fourth sub-guide groove 521, respectively, guiding the second connection rod 313 to move along the fourth straight line segment 523; finally, the third sub-guide protrusion 321 and the fourth sub-guide protrusion 322 move along the sixth straight line segment 524 of the third sub-guide groove 520 and the fourth sub-guide groove 521, respectively, and guide the third link 323 to move along the sixth straight line segment 524.

Optionally, as shown in fig. 25, the box 5 further includes a third sidewall 525, where the third sidewall 525 is disposed opposite to the first sidewall 50, and the second sidewall 515 and the third sidewall 525 are located on opposite sides of the first sidewall 50, respectively. The second driving structure 604 is located between the third sidewall 525 and the first sidewall 50.

As shown in fig. 30 and 33, the third connecting rod 323 is further provided with a second limiting structure 330, the third side wall 525 is provided with a second limiting matching structure 526, and the second limiting structure 330 and the second limiting matching structure 526 are matched to guide the second driving structure 604 to drive the second air deflector 104 to move, that is, guide the third connecting rod 323 to drive the second air deflector 104 to move.

The first limiting structure 328 cooperates with the first limiting cooperation structure 512, and the second limiting structure 330 cooperates with the second limiting cooperation structure 526, so that the third connecting rod 323 firstly moves in a folding line and then moves in an arc shape.

The third sidewall 525 has a smaller dimension than the first sidewall 50.

As shown in fig. 30, the first and second sidewalls 50 and 515 together define a space for movement of the first and second links 301 and 313, and the third and first sidewalls 525 and 50 together define a space for movement of the third link 323. The space required for the movement of the first and second links 301 and 313 is large, and thus the size required for the first sidewall 50 is large. The space required for the movement of the third link 323 is reduced, and thus, the size of the third side wall 525 gear can be smaller than that of the first side wall 50, thereby reducing the cost of the third side wall 525 while not affecting the movement of the third link 323.

Optionally, the first limiting structure 328 and the second limiting structure 330 are disposed along the length direction of the third link 323. In other words, the first limiting structure 328 and the second limiting structure 330 are located at different lengths of the third connecting rod 323, so that the first limiting structure 328 and the second limiting structure 330 can respectively limit the movement of the third connecting rod 323 at different lengths, and the stability of the movement of the third connecting rod 323 at each position is improved.

Optionally, the number of the second limiting structures 330 is multiple (for example, the number of the second limiting structures 330 in fig. 33 is two), the number of the second limiting structures 526 is equal to and corresponds to the number of the second limiting structures 330 one by one, the plurality of second limiting structures 330 are sequentially arranged along the length direction of the third connecting rod 323, and the plurality of second limiting structures 526 are sequentially arranged along the movement direction of the third connecting rod 323 when the second air deflector 104 is opened.

The second limiting structures 330 are arranged to limit the positions of the third connecting rod 323 with different lengths, so that the stability of movement of the third connecting rod 323 is improved.

Optionally, the first limiting structure 328 is located between two adjacent second limiting structures 330.

Optionally, as shown in fig. 33 and 34, the first limiting structure 328 includes a first limiting protrusion 329, the first limiting matching structure 512 includes a first limiting groove 513, the first limiting protrusion 329 is disposed in the first limiting groove 513 and can move relative to the first limiting groove 513, and the rotation of the third gear 606 is converted into the first movement of the third link 323 by the limiting action of the first limiting groove 513 on the first limiting protrusion 329, and then the first movement of the third link 323 is performed by a broken line; the second limiting structure 330 includes a second limiting protrusion 331, the second limiting matching structure 526 includes a second limiting groove 527, the second limiting protrusion 331 is disposed in the second limiting groove 527 and can move relative to the second limiting groove 527, and the rotation of the third gear 606 is converted into the third connecting rod 323 to do the broken line motion and then the arc motion through the limiting effect of the second limiting groove 527 on the second limiting protrusion 331.

It can be appreciated that the first limiting structure 328 may be a first limiting groove 513, and the first limiting mating structure 512 may be a first limiting protrusion 329. The second limiting structure 330 is a second limiting groove 527, and the second limiting fitting structure 526 is a second limiting protrusion 331.

Alternatively, as shown in fig. 34, the first and second stopper grooves 513 and 527 have the same shape. The first and second limiting grooves 513 and 527 each include a first sub-straight section 528 and an arc-shaped section 531. In the process of opening the second air deflector 104, the first limiting protrusion 329 is sequentially matched with the first sub-linear section 528 and the arc-shaped section 531 of the first limiting groove 513, and the second limiting protrusion 331 is sequentially matched with the second sub-linear section 529 and the arc-shaped section 531 of the second limiting groove 527, so that the third connecting rod 323 is guided to perform linear motion along the first sub-linear section 528, and then perform arc motion along the arc-shaped section 531.

Optionally, the first limiting groove 513 and the second limiting groove 527 each further include a second sub-linear segment 529, where the second sub-linear segment 529 is located between the first sub-linear segment 528 and the arc segment 531, and forms a folding angle with the junction of the first sub-linear segment 528.

In the opening process of the second air deflector 104, the first limiting protrusion 329 is sequentially matched with the first sub-straight line segment 528, the second sub-straight line segment 529 and the arc segment 531 of the first limiting groove 513, and the second limiting protrusion 331 is sequentially matched with the second sub-straight line segment 529, the second sub-straight line segment 529 and the arc segment 531 of the second limiting groove 527, so that the third connecting rod 323 is guided to perform linear motion along the first sub-straight line segment 528, then perform linear motion along the second sub-straight line segment 529 and then perform arc motion along the arc segment 531.

Optionally, the first sub-straight segment 528 extends horizontally or slopes upward and the second sub-straight segment 529 slopes upward.

Optionally, the first limiting groove 513 and the second limiting groove 527 further include a third sub-linear segment 530, where the third sub-linear segment 530 is located between the second sub-linear segment 529 and the arc segment 531, and a corner is formed at a connection between the third sub-linear segment 530 and the second sub-linear segment 529.

In the opening process of the second air deflector 104, the first limiting protrusion 329 is sequentially matched with the first sub-straight line segment 528, the second sub-straight line segment 529, the third sub-straight line segment 530 and the arc segment 531 of the first limiting groove 513, and the second limiting protrusion 331 is sequentially matched with the second sub-straight line segment 529, the third sub-straight line segment 530 and the arc segment 531 of the second limiting groove 527, so as to jointly guide the third connecting rod 323 to firstly perform linear motion along the first sub-straight line segment 528, then perform linear motion along the second sub-straight line segment 529, then perform linear motion along the third sub-straight line segment 530 and finally perform arc motion along the arc segment 531.

Optionally, the third sub-straight line segment 530 is inclined upward and to a greater extent than the second sub-straight line segment 529.

In the case where the first air guide plate 101 is located below the second air guide plate 104, the first sub-straight line segment 528 extends horizontally or is inclined downward, both the second sub-straight line segment 529 and the third sub-straight line segment 530 are inclined downward, and the degree of inclination of the third sub-straight line segment 530 is greater than that of the second sub-straight line segment 529. In the case where the first sub-straight line segment 528 is inclined downward, the second sub-straight line segment 529 is inclined to a greater extent than the first sub-straight line segment 528.

The third link 323 moves in a zigzag and then in an arc shape. Compared with the third connecting rod 323 which firstly moves linearly and then moves in an arc shape, the adjustment of the broken line movement to the position of the third connecting rod 323 is more accurate, and the third connecting rod 323 can be prevented from colliding with the shell under the condition that the third connecting rod 323 moves by a small displacement, so that the stroke of the third connecting rod 323 in the opening process of the second air deflector 104 can be reduced, and the space occupied by the driving device 300 is reduced.

When the first air deflector and the second air deflector are positioned at different positions, different air supply modes of the indoor unit can be realized. As shown in fig. 36, the first air deflector is in the lower blowing hot position, and the second air deflector is in the open position, so that the encircling air supply mode can be realized; as shown in fig. 41, when the first air deflector is in the flat blowing cold air supply position and the second air deflector is in the open position, a double air deflector horizontal upward-lifting large-air-volume windless refrigerating air supply mode can be realized.

The movement of the first air guide plate 101 and the second air guide plate 104 in the present application will be described with reference to the drawings.

In the opening process of the first air deflector 101, as shown in fig. 15 and 16, the first gear 602 is meshed with the first gear tooth segment 302, the second gear 603 is meshed with the second gear tooth segment 314, the first connecting rod 301 moves downwards along the first straight line segment 509, and the second connecting rod 313 moves downwards along the second straight line segment 522 to drive the first air deflector 101 to move to a horizontal refrigeration position; subsequently, as shown in fig. 23 and 24, the first gear 602 is meshed with the third gear segment 303, the second gear 603 is meshed with the fourth gear segment 315, the first connecting rod 301 moves downward along the third straight line segment 510, and the second connecting rod 313 moves upward along the fourth straight line segment 523, so that the first air deflector 101 is driven to move to the lower blowing hot position; subsequently, as shown in fig. 19 and 20, the first gear 602 is meshed with the fifth gear tooth segment 304, the second gear 603 is meshed with the sixth gear tooth segment 316, the first connecting rod 301 moves horizontally or upwards along the fifth straight line segment 511, and the second connecting rod 313 moves upwards along the sixth straight line segment 524 to drive the first air deflector 101 to move to the maximum air supply position without damage.

In the process of opening the second air deflector 104, as shown in fig. 38 and 39, the third link 323 moves along the first sub-straight line segment 528, the second sub-straight line segment 529 and the third sub-straight line segment 530 in sequence, and then moves along the arc segment 531 to a horizontal cooling position.

The first connecting rod 301, the second connecting rod 313 and the third connecting rod 323 all comprise a plurality of straight gear tooth segments, and the application also discloses a design method of a transition gear tooth segment 707 between two adjacent straight gear tooth segments.

In the tooth form design method of the rack 702 in the meshing structure of the rack and pinion 702, the rack 702 moves along a first linear track and a second linear track, and the rack 702 is provided with a first linear gear tooth segment 705 and a second linear gear tooth segment 706 so as to respectively correspond to the first linear track (F1 direction) and the second linear track.

The rack 702 may be the first link 301, where the gear is the first gear 602, the first linear track may be the first linear segment 509 and the second linear segment 522, where the first linear gear tooth segment 705 and the second linear gear tooth segment 706 are the first gear tooth segment 302 and the third gear tooth segment 303, and the first linear track may also be the second linear segment 522 and the third linear segment 510, where the first linear gear tooth segment 705 and the second linear gear tooth segment 706 are the third gear tooth segment 303 and the fifth gear tooth segment 304, respectively.

The rack 702 may also be the second connecting rod 313, the gear is the first gear 602, the first linear track may be the second linear segment 522 and the fourth linear segment 523, the first linear gear tooth segment 705 and the second linear gear tooth segment 706 may be the second gear tooth segment 314 and the fourth gear tooth segment 315, the first linear track may be the fourth linear segment 523 and the sixth linear segment 524, and the first linear gear tooth segment 705 and the second linear gear tooth segment 706 may be the fourth gear tooth segment 315 and the sixth gear tooth segment 316.

The rack 702 may be the third connecting rod 323, the gear is the second gear 603, the first linear track may be the first sub-linear segment 528 and the second sub-linear segment 529, the first linear gear tooth segment 705 and the second linear gear tooth segment 706 may be the seventh gear tooth segment 324 and the eighth gear tooth segment 325, the first linear track may be the second sub-linear segment 529 and the third sub-linear segment 530, and the first linear gear tooth segment 705 and the second linear gear tooth segment 706 may be the eighth gear tooth segment 325 and the ninth gear tooth segment 326.

As shown in fig. 43, the tooth profile design method includes:

Step S431, calculating the magnitude of the AOC, wherein the tangential point of the first linear track and the gear pitch circle is A, the tangential point of the second linear track and the gear pitch circle is C, and the rotation center of the gear is O;

in step S432, the tooth form of the transition tooth segment 707 between the first straight tooth segment 705 and the second straight tooth segment 706 is designed according to the magnitude of +.aoc.

Angle AOC can be understood as the angle that the gear wheel turns when the rack 702 moves from following a first linear path to deflecting to following a second linear path. The different sizes of the angle AOC can affect the tooth shape of the transition gear tooth section 707. Therefore, the tooth form of the transition gear tooth segment 707 needs to be designed according to the magnitude of +.aoc.

Assuming that the number of teeth of the gear is Z, the straight line of the gear is d, the gear modulus is m=d/Z, the pitch angle is α=360/Z, and the unit is "degree".

Step S432, designing the tooth shape of the transition gear tooth segment 707 between the first straight gear tooth segment 705 and the second straight gear tooth segment 706 according to the magnitude of +.aoc, including: and designing the tooth shape of a transition gear tooth section 707 between the first straight gear tooth section 705 and the second straight gear tooth section 706 according to the magnitude relation of the angle AOC and k x alpha, wherein alpha is the tooth angle of the gear, k is a constant, and k is more than or equal to 1 and less than or equal to 1.5.

The particular tooth form of the transition gear tooth segment 707 is affected by the magnitude relationship of +.aoc to k x a, and therefore the tooth form of the transition gear tooth segment 707 needs to be designed according to the magnitude relationship of +.aoc to k x a.

Optionally, designing the tooth shape of the transition tooth segment 707 between the first straight tooth segment 705 and the second straight tooth segment 706 according to the magnitude relationship of +.aoc and k x a, including:

When the angle AOC is less than or equal to α, the transitional gear tooth segment 707 is designed to be one straight line tooth profile 704 or a plurality of straight line tooth profiles 704, where the plurality of straight line tooth profiles 704 are sequentially arranged along the length direction of the rack 702, and a folding angle exists between two adjacent straight line tooth profiles 704.

In the case where the angle AOC is less than or equal to α, the transition gear tooth segment 707 does not have the structure of the next tooth, and therefore, the transition gear tooth segment 707 is designed as a straight tooth profile 704. The straight tooth profile 704 is straight.

Or the +.AOC is split into a plurality of sub-angles, each sub-angle is smaller than alpha, the transition gear tooth section 707 is divided into a plurality of sub-transition gear tooth sections 707, the number of the sub-transition gear tooth sections 707 is equal to and corresponds to the number of the sub-angles one by one, the tooth profile of each sub-transition gear tooth section 707 is designed to be a straight tooth profile 704, the plurality of straight tooth profiles 704 are sequentially arranged along the length direction of the rack 702, and a bevel angle exists between two adjacent straight tooth profiles 704.

In the case of the transitional tooth segment 707 being designed as one or more straight tooth profiles 704, the first straight tooth segment 705 and the second straight tooth segment 706 are connected by one or more straight tooth profiles 704.

Under the condition that the angle AOC is larger than alpha, the designed transition gear tooth section 707 comprises an arc tooth shape 703; or alternatively

Under the condition that the angle AOC is larger than alpha, the angle AOC is split into a plurality of sub-angles, each sub-angle is smaller than or equal to alpha, the transition gear tooth section 707 is divided into a plurality of sub-transition gear tooth sections 707, the number of the sub-transition gear tooth sections 707 is equal to and corresponds to the number of the sub-angles one by one, and the tooth shape of each sub-transition gear tooth section 707 is designed.

When angle AOC is greater than α, the transition gear tooth segment 707 can accommodate the structure of the next tooth, so that all or part of the transition gear tooth segment 707 can be designed as a circular arc tooth profile 703, where the circular arc tooth profile 703 is circular arc. The design is the circular arc profile of tooth 703, can realize the steady transition between first straight line teeth of a cogwheel section 705 and the straight line teeth of a cogwheel section 706, and circular arc profile of tooth 703 corresponds +.AOC great, consequently, compare in the design is the straight line profile of tooth 704, can reduce rack 702 in-process steering times, realize rack 702 quick switch direction of motion.

Or the angle AOC is split into a plurality of sub-angles, each sub-angle is smaller than or equal to alpha, the tooth shape of the transition gear tooth section 707 corresponding to each sub-angle is designed, and at the moment, the tooth shape of the transition gear tooth section 707 corresponding to each sub-angle is designed according to the condition that each sub-angle is smaller than or equal to alpha, wherein the tooth shape of the transition gear tooth section 707 corresponding to each sub-angle is the straight line tooth shape 704.

In one embodiment, the tooth design method includes:

Calculating the magnitude of the AOC;

When the angle AOC is less than or equal to α, designing the transition gear tooth segment 707 to be one straight line tooth profile 704 or a plurality of straight line tooth profiles 704, wherein the plurality of straight line tooth profiles 704 are sequentially arranged along the length direction of the rack 702, and a folding angle exists between two adjacent straight line tooth profiles 704;

Under the condition that the angle AOC is larger than alpha, the designed transition gear tooth section 707 comprises an arc tooth shape 703; or under the condition that the angle AOC is larger than alpha, splitting the angle AOC into a plurality of sub angles, wherein each sub angle is smaller than or equal to alpha, dividing the transition gear tooth section 707 into a plurality of sub transition gear tooth sections 707, and designing each sub transition gear tooth section 707 by the same and one-to-one correspondence of the number of sub transition gear tooth sections 707.

Alternatively, in the case where the angle AOC is greater than α, the design transition gear tooth segment 707 includes a circular arc tooth profile 703 comprising:

as shown in fig. 44, in the case where the angle AOC is greater than α and less than or equal to 1.5×α, the transitional gear tooth segment 707 is designed to be a circular arc tooth shape 703;

Under the condition that the angle AOC is larger than 1.5 x alpha, the designed transition gear tooth section 707 comprises a circular arc tooth profile 703 and a linear tooth profile 704 which are sequentially arranged along the length direction of the rack 702.

When the angle AOC is more than 1.5α, according to the verification of motion simulation, the rack 702 can interfere with a gear when turning. Therefore, in the case where the angle AOC is greater than α and less than or equal to 1.5×α, the transition gear tooth segment 707 can accommodate the structure of the next tooth, the transition gear tooth segment 707 may be designed into the circular arc profile 703, that is, when the transition gear tooth segment 707 is circular arc, and the rack 702 is turned from the first linear track to the second linear track, interference with the gear will not occur, that is, the rack 702 can be turned smoothly.

It is understood that, in the case where the angle AOC is greater than α and less than or equal to 1.5 a, the design may also be performed according to step S443.

Under the condition that the angle AOC is larger than 1.5 x alpha, the designed transition gear tooth segment 707 not only comprises the circular arc tooth profile 703 but also comprises the straight line tooth profile 704, so that interference with a gear in the steering process of the rack 702 is avoided when the transition gear tooth segment 707 is designed into the circular arc tooth profile 703.

Optionally, in the case where the angle AOC is greater than 1.5×α, the design transition gear tooth segment 707 includes a circular arc tooth profile 703 and a straight line tooth profile 704 sequentially disposed along the length direction of the rack 702, including:

in the case where the number of circular-arc tooth shapes 703 is plural and/or the number of straight-line tooth shapes 704 is plural, the circular-arc tooth shapes 703 and the straight-line tooth shapes 704 are alternately arranged along the length direction of the rack 702, that is, along the length direction of the rack 702, the circular-arc tooth shapes 703, the straight-line tooth shapes 704, the circular-arc tooth shapes 703, and the straight-line tooth shapes 704 … … are sequentially arranged.

It is understood that the tooth profile 703 may be a circular arc tooth profile 703, N sequentially arranged straight tooth profiles 704, N and N are positive integers greater than or equal to 1. I.e. there must be at least one straight tooth profile 704 between two adjacent circular tooth profiles 703.

And splitting the AOC into a plurality of sub-angles, wherein each sub-angle is smaller than or equal to 1.5 x alpha, dividing the transition gear tooth section 707 into a plurality of sub-transition gear tooth sections 707, and designing the tooth shape of each sub-transition gear tooth section 707 by the same and one-to-one correspondence of the number of the sub-transition gear tooth sections 707.

Each sub-angle is less than or equal to 1.5 a, avoiding interference with the gears as rack 702 is turned. For each sub-angle, the tooth form of the corresponding sub-transition tooth segment 707 is designed.

Optionally, at least one sub-angle is greater than α and less than or equal to 1.5 α, which may reduce the complexity of the design, reduce the number of straight tooth profiles 704, and increase the steering speed of the rack 702. Optionally, the at least two sub-angles are adjacent sub-angles.

All the sub-transition gear tooth segments 707 corresponding to the sub-angles with the sub-angles greater than α and less than or equal to 1.5×α and with the sub-angles greater than α and less than or equal to 1.5×α may be a plurality of straight-line tooth profiles 704 sequentially arranged along the length direction of the rack 702, and a break angle exists between two adjacent straight-line tooth profiles 704, or may be a circular arc tooth profile 703. It is also possible that there is a partial sub-angle less than alpha, which must be designed as one or more straight tooth profiles 704.

In one embodiment, the tooth design method includes:

Calculating the magnitude of the AOC;

Under the condition that the angle AOC is larger than alpha and smaller than or equal to 1.5 x alpha, the transition gear tooth segment 707 is designed to be a circular arc tooth shape 703;

as shown in fig. 45 to 47, in the case where the angle AOC is greater than 1.5×α, the angle AOC is split into a plurality of sub-angles, each sub-angle is less than or equal to 1.5×α, the transition gear tooth segment 707 is split into a plurality of sub-transition gear tooth segments 707, the number of the sub-transition gear tooth segments 707 is equal to and corresponds to the number of the sub-angles one by one, and the tooth profile of each sub-transition gear tooth segment 707 is designed.

Optionally, the length of the straight tooth profile 704 is greater than or equal to L, which is the pitch of the gear, l=pi d/Z.

As shown in fig. 45, the steering angle of the rack 702 when moving from the F1 direction to the F2 direction is ++aob. When +.aob=1.5α, the distance D2 the rack 702 needs to move in the direction F3 is L, and when the rack 702 is turned further (turned toward the direction F3), the gear does not interfere with the teeth of the rack 702 designed previously. Of course, the smaller the steering angle, the smaller the distance D2 that needs to be moved. The steering angle refers to an angle between the normal line of F1 and the normal line of F2 when the direction is turned from the direction F1 to the direction F2, and the steering angle refers to an angle between the normal line of F2 and the normal line of F3 when the direction is turned from the direction F2 to the direction F3.

Therefore, designing the length of each linear tooth profile 704 to be greater than or equal to L can avoid interference of the gear with the rack 702 as the rack 702 is turned.

In a specific embodiment, as shown in fig. 44, after the rack 702 moves along the direction F1 (the first straight track) for D1 distance, it moves along the direction F3 (the second straight track), where the ++aoc is greater than α and less than or equal to 1.5×α. At this time, the tooth profile of the transition tooth segment 707 is circular arc-shaped (circular arc tooth profile 703).

In another specific embodiment, as shown in fig. 45 to 47, after the rack 702 moves along the F1 direction (the first linear track) for D1 distance, it moves along the F3 direction (the second linear track), and the corresponding steering angle AOC is greater than 1.5×α and less than or equal to 3×α. At this time, the +.AOC needs to be split into two sub-angles, namely an included angle beta and an included angle gamma, and the included angles beta and gamma are both less than or equal to 1.5α, so that the gear and the rack 702 are prevented from interfering in the steering process of the rack 702. The transition cog segment 707 is split into two sub-transition cog segments 707, one sub-transition cog segment 707 corresponding to β and one sub-transition cog segment 707 corresponding to γ. At this time, the rack 702 moves along the direction F1 for a distance D1, then moves along the direction F2 for D2, where D2 is equal to or greater than L, and then moves along the direction F3. The tangent point between the F2 direction and the gear pitch circle is B, the angle aob=β, the angle boc=γ, and the degree of inclination of the F2 direction is between the degree of inclination of the F1 direction and the degree of inclination of the F3 direction, that is, the rack 702 is gradually turned from the F1 direction to the F3 direction through the F2 direction.

As shown in fig. 45, the first linear gear teeth on the rack 702 are first meshed with the gear, so that the rack 702 moves along the direction F1 by a distance D1, and then the tooth profile design from the tangent point a to the tangent point B: according to the tooth profile design of the internal gear meshed with the gear (external gear), wherein the internal gear and the external gear have the same parameters (equal pitch diameter and equal tooth number), the sub-transition gear tooth segment 707 corresponding to the +.AOB is a circular arc tooth profile 703.

As shown in fig. 45, the tooth profile design is directed back from tangent point B: at this time, the movement direction of the rack 702 is changed from F1 to F2, and the rack 702 is designed to be a straight tooth form 704 along the F2 direction according to the tooth form of the straight rack 702 meshed with the gear (external gear), and the length D2 of the straight rack 702 is more than or equal to L.

As shown in fig. 46 and 47, the tooth profile design from the tangent point B to the tangent point C after the rack 702 moves in the F2 direction by the distance D2: the tooth profile of the internal gear meshed with the gear (external gear) is designed, wherein the internal gear and the external gear have the same parameters (equal pitch diameter and equal tooth number) and are arc tooth profiles 703.

Tooth design from tangent point C back: at this time, the movement direction of the rack 702 is changed from F2 to F3, and the second straight gear teeth are formed according to the tooth form design of the straight rack 702 meshed with the gear (external gear).

That is, in this case, the transition gear tooth segment 707 includes the circular arc tooth profile 703, the straight line tooth profile 704, and the circular arc tooth profile 703 that are sequentially provided.

As shown in fig. 48, the present application further discloses a design method of the driving device 300, which includes:

Step S481, determining first to nth target positions of the first air deflector 101, wherein n is a positive integer greater than 1, and the first air deflector 101 sequentially passes through the first to nth target positions in the opening process;

Step S482, determining points A1, A2 … … An and B1, B2 … … Bn, wherein the points A1, A2 … … An are respectively positioned at the same position relative to the first air deflector 101 of the first to nth target positions, and the points B1, B2 … … Bn are respectively positioned at the same position relative to the first air deflector 101 of the first to nth target positions;

step S483, determining the positions of points C1, C2 … … Cn, wherein B1C1, B2C2 … … BnCn are both the lengths of the connecting rod 312;

In step S484, the movement trace of the second link 313 is determined based on the points A1, A2 … … An, and the movement trace of the first link 301 is determined based on the points C1, C2 … … Cn.

The first to nth target positions may be n of a closed position, a flat blow cold blow position, a lower blow hot blow position, and a lossless maximum blow position. For example, n=4, the first to nth target positions are the closed position, the flat blow cold blow position, the lower blow hot blow position, and the lossless maximum blow position, respectively; for example, n=3, the first to nth target positions are the closed position, the flat blow cold blow position, and the lower blow hot blow position, or the flat blow cold blow position, the lower blow hot blow position, and the lossless maximum blow position, respectively.

The design method of the present application will be described below by taking n=4 as an example. In fig. 49 to 53, D1, D2, D3, and D4 show the first air guide plate 101 in the closed position, the flat blow cold blow position, the lower blow hot blow position, and the maximum blow-out position, respectively.

A1 and B1 are two fixed points provided on the first air deflector 101 or outside the first air deflector 101 when the first air deflector 101 is in the closed position. B1C1 is the length of the connecting rod 312, which is a constant value. A1B1C1 may constitute a triangle. The lengths of A1B1 and B1C1 are unchanged, and the triangle shape can be changed by changing the length of A1C1, so that the point A1 and the point C1 are driven to be at different positions, and different inclination angle changes of A1B1 are realized. One end of the connecting rod 312 is considered to be in driving connection with the point B1, the first connecting rod 301 is in rotational connection with the connecting rod 312 at the point C1, the connecting rod 312 is driven to move by the action of the first connecting rod 301, so as to drive the point C1 to move, and the second connecting rod 313 is in driving connection with the point A1. In the opening process of the first air deflector 101, the first connecting rod 301 drives the point C1 to move to the points C2, C3 and C4 in sequence, and the second connecting rod 313 drives the point A1 to move to the points A2, A3 and A4 in sequence. Accordingly, the movement trace of the second link 313 can be determined based on the points A1, A2 … … An, and the movement trace of the first link 301 can be determined based on the points C1, C2 … … Cn.

The points A1, A2 … … An and B1, B2 … … Bn may be points provided on the first air guide plate 101 or points located outside the first air guide plate 101.

As shown in fig. 49 to 53, points A1 and A2 … … An and B1 and B2 … … Bn are points provided outside the first air guide plate 101. The determination method of the points A1 and A2 … … An is as follows: the point A1 is set inside the closed position of the first air guide plate 101, and the points A2, A3, and A4 are set inside the flat blowing cold blowing position, the lower blowing hot blowing position, and the lossless maximum blowing position of the first air guide plate 101, respectively. The distance from A1 to one end in the width direction of the first air guide plate 101 in the closed position (up-down direction of the closed position), the distance from A2 to one end in the width direction of the first air guide plate 101 in the flat blowing cold air blowing position, the distance from A3 to one end in the width direction of the first air guide plate 101 in the lower blowing hot air blowing position, and the distance from A4 to one end in the width direction of the first air guide plate 101 in the lossless maximum air blowing position are equal. The distance from A1 to the other end in the width direction of the first air guide plate 101 in the closed position, the distance from A2 to the other end in the width direction of the first air guide plate 101 in the flat blowing cold air supply position, the distance from A3 to the other end in the width direction of the first air guide plate 101 in the lower blowing hot air supply position, and the distance from A4 to the other end in the width direction of the first air guide plate 101 in the lossless maximum air supply position are equal. And the vertical distance from A1 to the first air deflector 101 in the closed position, the vertical distance from A2 to the first air deflector 101 in the flat blowing cold air supply position, the vertical distance from A3 to the first air deflector 101 in the lower blowing hot air supply position, and the vertical distance from A4 to the first air deflector 101 in the lossless maximum air supply position are equal.

In theory, points A1 and B1 may be any two points, but because of space constraints, it is preferable that point A1 be selected to be near the center of gravity of the first air deflector 101 in the closed position. In the closed position, the connecting rod 312 is rotatably connected to the first air deflector 101 via a first rotation axis at point B1, and the minimum distance between point B1 and point A1 is greater than the diameter of the first rotation axis.

Optionally, the points C1, C2 … … Cn need to satisfy a preset condition, where the preset condition includes: Δa1b1c1, Δa2b2c2c2 … … Δ AnBnCn are present, points C1, C2 … … Cn are located on the same side of A1B1, A2B2 … … AnBn, respectively, and c1c2=m_a1a2, c2c3=m_a2a3, … …

Cn-1Cn＝m*An-1An。

The points C1, C2 … … Cn are located on the same side of A1B1, A2B2 … … AnBn, respectively, and refer to the side of A1B1, A2B2 … … AnBn facing the air outlet, or the side facing away from the air outlet, respectively. As shown in fig. 49 to 53, the points A1, A2 … … An and B1, B2 … … Bn are all located on the side of the corresponding first air deflection 101 facing the air outlet, the points C1, C2 … … Cn are also all located on the side of the corresponding first air deflection 101 facing the air outlet, and Δa1b1c1 and Δa2b2c2 … … Δ AnBnCn are all located on the same side of the corresponding first air deflection 101 and cannot cross over the two sides of the corresponding first air deflection 101 in the thickness direction. For example, the points A1, B1, and C1 are all located on the side of the first air deflector 101 facing the air outlet in the closed position, but one of the points cannot be located on the side of the first air deflector 101 facing the air outlet in the closed position, and the other point is located on the side of the first air deflector 101 facing away from the air outlet in the closed position. That is, Δa1b1c1 is located at the side of the first air deflector 101 at the closed position facing or facing away from the air outlet, and cannot cross the thickness direction of the first air deflector 101 at the closed position.

Since the connection rod 312 cannot pass through the thickness direction of the first air deflection 101 during the opening process of the first air deflection 101, the points C1, C2 … … Cn are located on the same side of A1B1, A2B2 … … AnBn, respectively.

To simplify the design process of the driving device 300, the movement speeds of the first link 301 and the second link 313 are designed to be constant all the time. Therefore, when the first air guide plate 101 is opened from the n-1 th target position to the n-1 th target position, c1c2=m×a1a2, c2c3=m×a2a3, … … Cn-1 cn=m×an-1An is satisfied.

Optionally, as shown in fig. 52 and 53, step S483, determining the positions of points C1, C2 … … Cn includes:

drawing circles by taking points B1 and B2 … … Bn as circle centers and taking R as radius to obtain n circles;

points C1, C2 … … Cn are selected on the circumferences of the n circles, respectively.

By selecting points C1, C2 … … Cn on n circumferences, it can be ensured that B1C1, B2C2 … … BnCn are equal in length.

Optionally, R is greater than or equal to A1B1.

In the closed position, the connecting rod 312 is rotatably connected to the first connecting rod 301 at point C1 via a second rotation axis. If R is smaller than A1B1, interference may occur between the first rotation axis and the second rotation axis.

Optionally, after selecting the points C1, C2 … … Cn on the circumferences of the n circles, the method further includes:

verifying whether the points C1 and C2 … … Cn meet preset conditions or not;

if not, the positions of the points B1, B2 … … Bn are adjusted;

And after adjustment, returning to the step, drawing circles by taking the points B1 and B2 … … Bn as circle centers and taking R as radius to obtain n circles, and reselecting the points C1 and C2 … … Cn.

Alternatively, as shown in fig. 53, determining the movement trace of the first link 301 according to the points C1, C2 … … Cn includes:

Two adjacent points of the connection points C1 and C2 … … Cn determine the movement track of the first link 301 according to the line segments C1C2 and C2C3 … … Cn-1 Cn.

Cn-1Cn is the movement locus of the first link 301 when the first air guide plate 101 moves from the n-1 th target position to the n-th target position, and therefore, after C1C2 and C2C3 … … Cn-1Cn are acquired, the movement locus of the first link 301 from the first target position to the n-th target position can be obtained.

Optionally, the first connecting rod 301 and the second connecting rod 313 are provided with gear teeth, the driving device 300 further includes a first gear 602 drivingly connected with the first connecting rod 301 and a second gear 603 drivingly connected with the second connecting rod 313, and the design method further includes: the parameters of the first gear 602 and the second gear 603 are determined according to the size of m.

M reflects the speed ratio of the first link 301 to the second link 313, the first link 301 is driven by the first gear 602, the second link 313 is driven by the second gear 603, and the parameters of the first gear 602 and the second gear 603 need to meet certain requirements to meet the speed ratio of the first link 301 to the second link 313.

Optionally, determining parameters of the first gear 602 and the second gear 603 according to the size of m includes:

If m=1, the linear speeds of the first gear 602 and the second gear 603 are equal;

if m+.1, the linear speeds of the first gear 602 and the second gear 603 are not equal.

If m=1, it is explained that the speeds of the first link 301 and the second link 313 are equal, the linear speeds of the first gear 602 and the second gear 603 are equal, and the first gear 602 and the second gear 603 are coaxially disposed, for example, the angular speeds of the first gear 602 and the second gear 603 are equal, the radii of the first gear 602 and the second gear 603 are equal, and the first gear 602 and the second gear 603 are the same.

If m+.1, it is explained that the speeds of the first link 301 and the second link 313 are not equal, the linear speeds of the first gear 602 and the second gear 603 are not equal, and the first gear 602 and the second gear 603 are coaxially disposed, for example, the angular speeds of the first gear 602 and the second gear 603 are equal, the radii of the first gear 602 and the second gear 603 are not equal, or the numbers of teeth are different.

Alternatively, as shown in fig. 53, determining the movement trace of the second link 313 based on the points A1, A2 … … An includes:

Two adjacent points in the connection points A1 and A2 … … An determine the movement track of the first connecting rod 301 according to the line segments A1A2 and A2A3 … … An-1 An.

An-1An is the movement locus of the first link 301 when the first air deflector 101 moves from the n-1 th target position to the n-1 th target position, and therefore, after the A1A2 and A2A3 … … An-1An are acquired, the movement locus of the first link 301 from the first target position to the n-th target position can be known.

In a specific embodiment, the design method of the driving device 300 includes:

determining first to fourth target positions of the first air deflection plate 101;

Determining points A1, A2, A3, A4, and determining points B1, B2, B3, B4;

connecting A1A2, A2A3 and A3A4, and determining the stroke and the movement direction (movement track) of each stage of the first connecting rod 301;

Drawing circles by taking B1, B2, B3 and B4 as circle centers and taking A1B1 as radius to obtain four circles, and determining the ranges of C1, C2, C3 and C4;

Selecting C1, C2, C3 and C4 on the circumferences of the four circles;

connecting C1C2, C2C3, C3C4, by drawing software (e.g. Solidworks, UG) such that c1c2=m×a1a2, c2c3=m×a2a3, c3c4=m×a3a4;

verifying whether C1, C2, C3 and C4 meet preset conditions;

If not, the points B1, B2, B3 and B4 are adjusted, and the points B1, B2, B3 and B4 are determined by returning to the step;

If satisfied, the stroke and the movement direction (movement locus) of the first link 301 are determined according to the lengths and directions of C1C2, C2C3, and C3C 4.

An embodiment of the second aspect of the present application provides an air conditioner, comprising a first air deflector 101 and a driving device 300 for an air conditioner air deflector according to any of the above embodiments, wherein the first link 301 and the second link 313 are connected to the first air deflector 101.

The air conditioner provided by the embodiment of the second aspect of the present application, because of including the driving device 300 according to any one of the embodiments of the first aspect, has all the advantages of the driving device 300 according to any one of the embodiments of the first aspect, and will not be described herein.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. The tooth form design method of the rack in the gear-rack meshing structure is characterized in that the rack moves along a first linear track and a second linear track sequentially, and the rack is provided with a first linear gear tooth segment and a second linear gear tooth segment so as to correspond to the first linear track and the second linear track respectively, and the tooth form design method comprises the following steps:

Calculating the magnitude of the AOC, wherein the tangential point of the first linear track and the gear pitch circle is A, the tangential point of the second linear track and the gear pitch circle is C, and the rotation center of the gear is O;

And designing the tooth shape of the transition gear tooth segment between the first straight gear tooth segment and the second straight gear tooth segment according to the magnitude of the AOC.

2. The method for designing the tooth form of a rack in a rack-and-pinion meshing structure according to claim 1, wherein designing the tooth form of the transition tooth segment between the first straight tooth segment and the second straight tooth segment according to the magnitude of +.aoc, comprises:

And designing the tooth shape of a transition gear tooth segment between the first straight gear tooth segment and the second straight gear tooth segment according to the magnitude relation of the angle AOC and k x alpha, wherein alpha is the tooth pitch angle of the gear, and k is more than or equal to 1 and less than or equal to 1.5.

3. The method of designing the tooth form of a rack in a rack-and-pinion meshing structure according to claim 2, wherein designing the tooth form of the transition tooth segment between the first straight tooth segment and the second straight tooth segment according to the magnitude relation of ++aoc and k x α includes:

under the condition that the angle AOC is smaller than or equal to alpha, the transition gear tooth segment is designed to be a straight-line tooth shape or a plurality of straight-line tooth shapes, wherein the plurality of straight-line tooth shapes are sequentially arranged along the length direction of the rack, and a folding angle exists between two adjacent straight-line tooth shapes.

4. The method of designing the tooth form of a rack in a rack-and-pinion meshing structure according to claim 2, wherein designing the tooth form of the transition tooth segment between the first straight tooth segment and the second straight tooth segment according to the magnitude relation of ++aoc and k x α includes:

under the condition that the angle AOC is larger than alpha, designing a transition gear tooth section to comprise a circular arc tooth shape; or alternatively

Under the condition that the angle AOC is larger than alpha, the angle AOC is split into a plurality of sub-angles, each sub-angle is smaller than or equal to alpha, the transition gear tooth sections are divided into a plurality of sub-transition gear tooth sections, the number of the sub-transition gear tooth sections is equal to and corresponds to the number of the sub-angles one by one, and the tooth shape of each sub-transition gear tooth section is designed.

5. The method for designing the tooth profile of a rack in a rack-and-pinion engagement structure according to claim 4, wherein, in the case where the angle AOC is greater than α, the designed transition tooth segment includes a circular arc tooth profile, comprising:

under the condition that the angle AOC is larger than alpha and smaller than or equal to 1.5 x alpha, designing a transition gear tooth segment to be arc-shaped;

under the condition that the angle AOC is larger than 1.5 x alpha, the designed transition gear tooth section comprises a circular arc tooth shape and a linear tooth shape which are sequentially arranged along the length direction of the rack.

6. The tooth profile design method for racks in a rack-and-pinion engagement structure according to claim 5, wherein, in the case where the angle AOC is greater than 1.5 x α, the design transition tooth segment includes a circular arc tooth profile and a straight line tooth profile sequentially provided along the length direction of the racks, comprising:

In the case where the number of circular-arc tooth forms is plural and/or the number of straight-line tooth forms is plural, the circular-arc tooth forms and the straight-line tooth forms are alternately arranged along the length direction of the rack.

7. The tooth profile design method for racks in a rack-and-pinion engagement structure according to claim 6, wherein the circular arc tooth profile and the linear tooth profile are alternately arranged along the length direction of the racks, comprising:

The degree of inclination of the straight line where the straight line tooth profile is located is between the degree of inclination of the first straight line track and the second straight line track.

8. The tooth profile design method for racks in a rack-and-pinion engagement structure according to claim 5, wherein, in the case where the angle AOC is greater than 1.5 x α, the design transition tooth segment includes a circular arc tooth profile and a straight line tooth profile sequentially provided along the length direction of the racks, comprising:

Under the condition that the angle AOC is larger than 1.5 x alpha, the angle AOC is split into a plurality of sub angles, each sub angle is smaller than or equal to 1.5 x alpha, the transition gear tooth sections are divided into a plurality of sub transition gear tooth sections, the number of the sub transition gear tooth sections is equal to and corresponds to the number of the sub angles one by one, and the tooth shape of each sub transition gear tooth section is designed.

9. The method for designing the tooth profile of a rack in a rack-and-pinion engagement structure according to any one of claims 3, 5 to 8,

The length of the straight tooth profile is greater than or equal to L, and L is the tooth pitch of the gear.

10. An air conditioner, comprising:

The indoor unit comprises a shell and an air deflector, wherein the shell defines an air duct and is provided with an air outlet communicated with the air duct, and the air deflector is movably arranged at the air outlet;

a rack designed by the tooth form design method of the rack in the gear-rack meshing structure according to any one of claims 1 to 9, the rack being in driving connection with the wind deflector.