Gear box and air conditioner indoor unit

Abstract

This application relates to the field of air conditioning technology and discloses a gearbox. It includes: a motor; a gear connected to the motor for driving, with teeth on a portion of its circumferential surface, the gear meshing with a rack on a rack connecting plate connected to an air guide plate, driving the air guide plate to open upwards or downwards; and a housing for housing the motor, gear, and rack connecting plate; wherein the housing includes an opening for the rack connecting plate to rotate. The gearbox contains a motor and a gear, the motor driving the gear to rotate, and the gear meshing with the rack on the rack connecting plate. Since the rack connecting plate is connected to the air guide plate, the gear can drive the air guide plate to open upwards or downwards via the rack connecting plate. This application uses only one gear to drive the air guide plate to open, and the opening of the housing allows the rack connecting plate to rotate, providing sufficient space for its movement. This application also discloses an air conditioning indoor unit.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, for example to a gearbox and an indoor air conditioning unit. Background Technology

[0002] To achieve a wider airflow angle adjustment, existing air conditioner air deflectors typically employ the following two solutions:

[0003] The first approach involves leaving a large gap between the air guide plate and the air conditioner to allow the plate to rotate. However, this approach is limited by the air duct, restricts the plate's rotation, and the large gap affects aesthetics and does not prevent dust accumulation, leading to dust buildup inside the air conditioning duct and failing to meet health requirements.

[0004] The second approach uses a robotic arm-type large guide plate. A motion mechanism moves the entire guide plate out of the unit, and then the guide plate rotates along its connecting axis to the robotic arm under the control of the motion mechanism, allowing for large-angle rotation. However, this approach requires at least two sets of motion mechanisms to extend and rotate the guide plate. The increased number of mechanisms raises the cost of the air conditioner, and also increases the probability of malfunction, resulting in lower reliability of the guide plate's movement.

[0005] The current solution lacks a simple drive mechanism to work with the air guide vane that can rotate at large angles. Summary of the Invention

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a gearbox and an indoor air conditioning unit, which uses a simple drive mechanism to rotate the air guide plate.

[0008] In some embodiments, the gearbox includes: a motor; a gear, driven and connected to the motor, wherein a portion of the gear's circumferential surface is provided with teeth, the gear being used to mesh with a rack on a rack connecting plate connected to the air guide plate, thereby driving the air guide plate to perform an upward or downward opening action; and a housing for housing the motor, the gear, and the rack connecting plate; wherein the housing includes an opening for the rack connecting plate to rotate.

[0009] Optionally, the opening is also used to allow the rack connecting plate to pass through the housing.

[0010] Optionally, the housing includes: a first housing having a motor receiving cavity.

[0011] Optionally, the housing further includes a second housing having a track portion for guiding the rack connecting plate.

[0012] Optionally, the track section includes a V-shaped track.

[0013] Optionally, the track section includes a first V-shaped track, a second V-shaped track, and a third V-shaped track arranged side by side; wherein the first end of the first V-shaped track and the first end of the third V-shaped track are both open ends, the second end of the first V-shaped track and the second end of the third V-shaped track are both closed ends, and both ends of the second V-shaped track are closed ends.

[0014] In some embodiments, the indoor unit of the air conditioner includes the aforementioned gearbox.

[0015] Optionally, the indoor unit of the air conditioner further includes: an air guide plate, including an air guide plate body; and a rack and pinion connecting plate disposed on the inner side wall of the air guide plate body.

[0016] Optionally, the rack connecting plate includes: a first rack extending in an arc shape to one end of the rack connecting plate; and a second rack extending in an arc shape to the other end of the rack connecting plate.

[0017] Optionally, the motor is a bidirectional drive motor, the gear is located between the first rack and the second rack, and the gear can drive the first rack or the second rack to rotate; wherein, when the gear drives the first rack, the air guide plate opens upward; when the gear drives the second rack, the air guide plate opens downward.

[0018] The gearbox and air conditioner indoor unit provided in this disclosure can achieve the following technical effects:

[0019] The gearbox contains a motor and gears. The motor drives the gears to rotate. The gears mesh with the rack on the rack connecting plate. Since the rack connecting plate is connected to the air guide plate, the gears can drive the air guide plate to open upwards or downwards through the rack connecting plate.

[0020] A single gear can drive the air guide plate to open upwards or downwards. The opening of the housing allows the rack and pinion connecting plate to rotate, providing sufficient space for the rack and pinion connecting plate to drive the air guide plate to rotate.

[0021] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0022] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0023] Figure 1 This is a schematic diagram of a gearbox structure provided in an embodiment of this disclosure;

[0024] Figure 2 This is a schematic diagram of another gearbox provided in an embodiment of this disclosure;

[0025] Figure 3 This is a schematic diagram of another gearbox provided in an embodiment of this disclosure;

[0026] Figure 4 This is a schematic diagram of another gearbox provided in an embodiment of this disclosure;

[0027] Figure 5 This is a schematic diagram of another gearbox provided in an embodiment of this disclosure;

[0028] Figure 6 This is a schematic diagram of the structure of the second housing provided in an embodiment of this disclosure;

[0029] Figure 7 This is a schematic diagram of the structure of the rack and pinion connecting plate provided in the embodiments of this disclosure;

[0030] Figure 8 This is a schematic diagram of the structure of an indoor air conditioner unit provided in an embodiment of this disclosure;

[0031] Figure 9 This is a schematic diagram of the structure of the indoor unit of the air conditioner when the air guide plate is in the upward opening state according to the embodiment of this disclosure;

[0032] Figure 10 This is a schematic diagram of the structure of the indoor unit of the air conditioner when the air guide plate is in a downward opening state, according to an embodiment of this disclosure.

[0033] Figure 11 This is a schematic diagram of the structure of the air guide plate provided in the embodiment of this disclosure.

[0034] Figure label:

[0035] 10: Gearbox; 11: First housing; 111: Motor housing; 112: Connecting plate mounting area; 113: Opening; 12: Second housing; 121: First V-shaped track; 122: Second V-shaped track; 123: Third V-shaped track; 20: Motor; 30: Gear; 40: Rack connecting plate; 41: First rack; 42: Second rack; 43: Connecting plate body; 431: Guide structure; 432: Connector; 50: Air guide plate; 51: Air guide plate body. Detailed Implementation

[0036] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0037] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0038] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0039] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0040] Unless otherwise stated, the term "multiple" means two or more.

[0041] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0042] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0043] The upward opening state of this application refers to the state in which the air guide plate 50 is in the upward opening state, and the downward opening state refers to the state in which the air guide plate 50 is in the downward opening state.

[0044] In this application, the upward opening action refers to the action of making the air guide plate 50 open upward, and the downward opening action refers to the action of making the air guide plate 50 open downward.

[0045] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0046] Combination Figure 1-6 As shown, this embodiment of the present disclosure provides a gearbox 10, including a motor 20, a gear 30, and a housing.

[0047] Gear 30 is driven and connected to motor 20, and a portion of the peripheral surface of gear 30 is provided with teeth. Gear 30 is used to mesh with the rack on rack connecting plate 40 connected to air guide plate 50, thereby driving air guide plate 50 to open upward or downward.

[0048] The housing is used to house the motor 20, the gear 30, and the rack connecting plate 40; wherein the housing includes an opening 113 for the rack connecting plate 40 to rotate.

[0049] The gear box 10 provided in this embodiment is used. The gear box 10 is equipped with a motor 20 and a gear 30. The motor 20 is used to drive the gear 30 to rotate. The gear 30 meshes with the rack on the rack connecting plate 40. Since the rack connecting plate 40 is connected to the air guide plate 50, the gear 30 can drive the air guide plate 50 to open upward or downward through the rack connecting plate 40.

[0050] A single gear 30 can drive the air guide plate 50 to open upwards or downwards. The opening 113 of the housing allows the rack and pinion connecting plate 40 to rotate, providing sufficient space for the rack and pinion connecting plate 40 to drive the air guide plate 50 to rotate.

[0051] Combination Figure 2 , 4 As shown in Figure 5, optionally, the opening 113 is also used to allow the rack connecting plate 40 to pass through the housing.

[0052] This can be understood as the rack connecting plate 40 passing through the opening 113, and the rack connecting plate 40 can rotate in the open space formed by the opening 113, driving the air guide plate 50 to open upward or downward.

[0053] Combination Figure 1 , 3 As shown, optionally, the housing includes: a first housing 11, which has a motor receiving cavity 111. This can be understood as the motor 20 being installed inside the motor receiving cavity 111, with the first housing 11 serving as the main component for mounting the motor 20.

[0054] Combination Figure 6 , 9 As shown in Figure 10, optionally, the housing further includes a second housing 12, which is provided with a track portion for guiding the rack connecting plate 40. It can be understood that the second housing 12 serves as a component for guiding the rotation of the rack connecting plate 40.

[0055] As an example, the first housing 11 and the second housing 12 are interlocking structures. The first housing 11 is used to load components such as the motor 20, gear 30, and rack connecting plate 40. The second housing 12 is used to guide the movement of the rack connecting plate 40. An opening 113 is provided on the first housing 11 for the rack connecting plate 40 to rotate, thereby driving the air guide plate 50 to open upward and downward.

[0056] As another example, such as Figure 2 , Figure 6 As shown, the second housing 12 is provided with a connecting post, and the first housing 11 is provided with a positioning hole that cooperates with the connecting post. The first housing 11 and the second housing 12 are connected and fixed by the connecting post and the positioning hole. The second housing 12 is installed on the air guide plate bracket, wherein the connecting post is located in the area that will not be touched when the rack connecting plate 40 rotates.

[0057] As another example, the gearbox 10 is provided with a motor housing cavity 111 and a connecting plate mounting area 112. The first housing 11 has an open structure, including a mounting opening and an opening 113. The mounting opening is used for the rack connecting plate 40 to cooperate with the second housing 12, and the opening 113 is used for the rack connecting plate 40 to drive the air guide plate 50 to rotate.

[0058] During installation, the mounting opening of the first housing 11 faces the second housing 12. The gear box 10 is fixed to the air guide plate bracket through the second housing 12. The motor 20 is installed in the motor receiving cavity 111. The motor 20 is connected to the gear 30. The gear 30 meshes with the rack on the rack connecting plate 40. The rack connecting plate 40 is rotatably installed in the connecting plate mounting area 112 to drive the air guide plate 50 to open upward or downward. The rack connecting plate 40 is provided with a guide structure 431. The rack connecting plate 40 slides or rolls with the track part through the guide structure 431 to ensure a stable connection between the gear 30 and the rack connecting plate 40.

[0059] Combination Figure 6 As shown, optionally, the track section includes a V-shaped track.

[0060] Combination Figure 6 , 8 As shown in Figures 9 and 10, optionally, the track section includes a first V-shaped track 121, a second V-shaped track 122, and a third V-shaped track 123 arranged side by side; wherein, the first end of the first V-shaped track 121 and the first end of the third V-shaped track 123 are both open ends, the second end of the first V-shaped track 121 and the second end of the third V-shaped track 123 are both closed ends, and both ends of the second V-shaped track 122 are both closed ends.

[0061] As an example, the rack and pinion connecting plate 40 is provided with a first slider, a second slider, and a third slider, which respectively cooperate with the first V-shaped track 121, the second V-shaped track 122, and the third V-shaped track 123. The first V-shaped track 121 and the second V-shaped track 122 guide the rack and pinion connecting plate 40 to drive the air guide plate 50 to open downwards, at which point the rack and pinion connecting plate 40 disengages from the third V-shaped track 123. The second V-shaped track 122 and the third V-shaped track 123 cooperate to guide the rack and pinion connecting plate 40 to drive the air guide plate 50 to open upwards, at which point the rack and pinion connecting plate 40 disengages from the first V-shaped track 121. The first end of the first V-shaped track 121 and the first end of the third V-shaped track 123 are located near the second V-shaped track 122. Both ends of the second V-shaped track 122 are closed, used to limit the range of motion of the rack and pinion connecting plate 40 and prevent it from derailing.

[0062] In some embodiments, the indoor unit of the air conditioner includes the aforementioned gearbox 10.

[0063] Combination Figure 11 As shown, optionally, the indoor unit of the air conditioner also includes: an air guide plate 50, including an air guide plate body 51; and a rack and pinion connecting plate 40, disposed on the inner side wall of the air guide plate body 51.

[0064] As an example, rack and pinion connecting plates 40 are disposed at both ends of the air guide plate body 51, thereby facilitating the installation of the air guide plate body 51 and the driving structure such as gear 30 driving the rack and pinion connecting plates 40 and the air guide plate 50.

[0065] Optionally, the rack connecting plate 40 includes: a first rack 41 extending in an arc shape to one end of the rack connecting plate 40; and a second rack 42 extending in an arc shape to the other end of the rack connecting plate 40.

[0066] This can be understood as follows: the first ends of the first rack 41 and the second rack 42 are both located in the lower middle part of the rack connecting plate 40. The first rack 41 extends in an arc shape towards one end of the rack connecting plate 40, and the second rack 42 extends in an arc shape towards the other end of the rack connecting plate 40. The center of the arc of the first rack 41 is located below one side of the rack connecting plate 40, and the center of the arc of the second rack 42 is located below the other side of the rack connecting plate 40. The rack connecting plate 40 can rotate around the centers of the arcs of the first rack 41 and the second rack 42, respectively. Since the centers of the arcs of the first rack 41 and the second rack 42 are both located on the side of the rack connecting plate 40, compared to a structure where the center of rotation is located in the middle, the rack connecting plate 40 and the air guide plate 50 connected to it can rotate at a large angle to achieve large-area air delivery.

[0067] Since part of the circumference of gear 30 has teeth, it can be understood that the working surface of gear 30 includes two parts: a toothed part and a toothless part.

[0068] As an example, the arc length of the toothed portion is related to the arc length of the first rack 41 and the second rack 42. The arc length of the toothed portion is less than or equal to the arc length of the first rack 41 and the second rack 42. Optionally, the toothed portion of the gear 30 is provided with continuous teeth. Optionally, the area of ​​the toothless portion is greater than the area of ​​the toothed portion.

[0069] As an example, the toothed portion and the toothless portion are located on opposite sides of the working surface of the gear 30. In the initial state, the toothless portion of the gear 30 faces the gap between the first rack 41 and the second rack 42, as shown below. Figure 8 As shown, when gear 30 starts to drive the first rack 41, the toothed part meshes with the first rack 41, and the toothless part faces the second rack 42. Gear 30 does not mesh with the first rack 41 and the second rack 42 at the same time to avoid jamming.

[0070] Optionally, the rack portion has an outwardly opening U-shaped structure, the U-shaped structure including a bottom, and a first side portion and a second side portion extending outward along the bottom, the first rack 41 being disposed on the first side portion, and the second rack 42 being disposed on the second side portion, as shown below. Figures 7 to 10 As shown.

[0071] This can be understood as follows: both the first rack 41 and the second rack 42 are arc-shaped structures. The teeth of both racks 41 and 42 are set on the convex surface of the arc-shaped structure, and the teeth of both racks 41 and 42 are facing the gear 30. The first end of the first rack 41 is close to the first end of the second rack 42, and the second end of the first rack 41 is far from the second end of the second rack 42. The initial position of the gear 30 is located at the bottom of the U-shaped structure. When the gear 30 drives the first rack 41, the rack connecting plate 40 rotates around the arc center of the first rack 41, and drives the air guide plate body 51 to rotate, so that the air guide plate 50 is in an upward opening state. When the gear 30 drives the second rack 42, the rack connecting plate 40 rotates around the arc center of the second rack 42, and drives the air guide plate body 51 to rotate, so that the air guide plate 50 is in a downward opening state.

[0072] Optionally, the rack connecting plate 40 and the air guide plate body 51 are detachably connected, and the rack connecting plate 40 and the air guide plate body 51 are snap-fitted together.

[0073] Optionally, the motor 20 is a bidirectional drive motor, and the gear 30 is located between the first rack 41 and the second rack 42. The gear 30 can drive the first rack 41 or the second rack 42 to rotate. When the gear 30 drives the first rack 41, the air guide plate 50 opens upward; when the gear 30 drives the second rack 42, the air guide plate 50 opens downward.

[0074] This can be understood as follows: the motor 20 is a bidirectional drive motor, capable of driving the gear 30 to rotate in both directions. The gear 30 is located between the first rack 41 and the second rack 42, and is used to drive either the first rack 41 or the second rack 42. The motor 20 drives the gear 30. When the gear 30 drives the first rack 41, the air guide plate 50 rotates around the arc center of the first rack 41, i.e., the first rotation center, causing the air guide plate body 51 to be in an upward-opening state. When the gear 30 drives the second rack 42, the air guide plate body 51 rotates around the arc center of the second rack 42, i.e., the second rotation center, causing the air guide plate body 51 to be in a downward-opening state. The first rotation center is a virtual rotation axis of the first rack 41, and the second rotation center is a virtual rotation axis of the second rack 42. Optionally, the first rotation center and the second rotation center do not overlap.

[0075] Gear 30 can mesh with either the first rack 41 or the second rack 42, driving either rack 41 or rack 42 to rotate. When gear 30 drives the first rack 41 to rotate, gear 30 and rack 42 are not meshed; when gear 30 drives rack 42 to rotate, gear 30 and rack 41 are not meshed. The first rack 41 is mainly used to keep the air guide plate 50 in an upward opening state, and the second rack 42 is mainly used to keep the air guide plate 50 in a downward opening state. The rack connecting plate 40 mainly plays a transmission role. Since the first rack 41 and the second rack 42 are mounted on the rack connecting plate 40 and the rack connecting plate 40 is connected to the air guide plate 50, when the first rack 41 or the second rack 42 moves under the drive of gear 30, the air guide plate 50 will also move accordingly.

[0076] As an example, both the first rack 41 and the second rack 42 are arc-shaped structures. The first end of the first rack 41 is close to the first end of the second rack 42, and the second end of the first rack 41 is far from the second end of the second rack 42. The gear 30 is initially located at the first ends of both the first rack 41 and the second rack 42, and meshes with both racks simultaneously. Figure 8 As shown. At this time, the air guide plate 50 is in the closed state. When the gear 30 needs to drive the first rack 41 or the second rack 42, the gear 30 is rotated in the corresponding driving direction and disengaged from the other rack. When the air guide plate 50 needs to be closed or opened in another direction, the gear 30 is rotated in the opposite direction to the initial driving direction.

[0077] The following is combined Figures 8 to 10 The motion principle of the embodiments of this disclosure will be explained.

[0078] The teeth of the first rack 41 and the second rack 42 are both set on the convex surface of the arc-shaped structure. The first ends of the first rack 41 and the second rack 42 are both located in the lower middle part of the rack connecting plate 40. The first rack 41 extends arc-shaped towards one end of the rack connecting plate 40, and the second rack 42 extends arc-shaped towards the other end of the rack connecting plate 40. That is, the first end of the first rack 41 is close to the first end of the second rack 42, and the second end of the first rack 41 is far from the second end of the second rack 42. The arc center of the first rack 41 is located below one side of the rack connecting plate 40, and the arc center of the second rack 42 is located below the other side of the rack connecting plate 40. The rack connecting plate 40 can rotate about the arc centers of the first rack 41 and the second rack 42 respectively. The gear 30 is located at the first ends of the first rack 41 and the second rack 42 in the initial state.

[0079] In implementation, gear 30 initially meshes with both the first rack 41 and the second rack 42. When the air guide plate 50 needs to be in an upward opening state, gear 30 rotates in the first direction from its initial state. During this process, gear 30 disengages from the second rack 42 and begins to drive the first rack 41. At this time, the first rack 41 rotates around the first rotation center, causing the air guide plate 50 to open upward. By controlling the rotation angle of gear 30 or the displacement of gear 30 on the first rack 41, the size of the upward opening of the air guide plate 50 can be adjusted. When it is necessary to close the air guide plate 50, gear 30 rotates in the second direction, causing the rack connecting plate 40 to return to its initial position via the first rack 41. Gear 30 meshes with the first ends of the first rack 41 and the second rack 42 simultaneously. When it is necessary to switch the air guide plate 50 from the upward opening state to the downward opening state, firstly, gear 30 is rotated in the second direction to return the rack connecting plate 40 to the initial position. Then, it continues to rotate in the second direction to disengage gear 30 from the first rack 41 and start driving the second rack 42. The second rack 42 rotates around the second rotation center as an axis, driving the air guide plate 50 to open downward. By controlling the rotation angle of gear 30 or the displacement of gear 30 on the second rack 42, the size of the downward opening of the air guide plate 50 can be adjusted.

[0080] Similarly, when the air guide plate 50 needs to be in a downward opening state, the gear 30 starts from its initial state and rotates in the second direction. During this process, the gear 30 disengages from the first rack 41 and begins to drive the second rack 42. At this time, the second rack 42 rotates around the second rotation center, causing the air guide plate 50 to open downward. By controlling the rotation angle of the gear 30 or the displacement of the gear 30 on the second rack 42, the size of the downward opening of the air guide plate 50 can be adjusted. When it is necessary to close the air guide plate 50, the gear 30 rotates in the first direction, which drives the rack connecting plate 40 back to its initial position via the second rack 42. At this time, gear 30 meshes with the first end of the first rack 41 and the second rack 42 again. When it is necessary to switch the air guide plate 50 from the downward opening state to the upward opening state, firstly, gear 30 is rotated in the first direction to return the rack connecting plate 40 to the initial position. Then, it continues to rotate in the first direction to disengage gear 30 from the second rack 42 and start driving the first rack 41. The first rack 41 rotates around the first rotation center as the axis, driving the air guide plate 50 to open upward. By controlling the rotation angle of gear 30 or the displacement of gear 30 on the first rack 41, the size of the upward opening of the air guide plate 50 can be adjusted.

[0081] Optionally, when gear 30 is located on the perpendicular bisector of the line connecting the arc centers of the first rack 41 and the second rack 42, the air guide plate 50 is in a closed state, such as... Figure 8 As shown.

[0082] This can be understood as follows: since the position of gear 30 remains unchanged, when gear 30 drives the first rack 41 or the second rack 42 to rotate, the rack connecting plate 40 will also move accordingly. The line connecting the arc centers of the first rack 41 and the second rack 42 and its perpendicular bisector will also be in motion with the movement of the rack connecting plate 40. Only when the rack connecting plate 40 returns to its initial position, that is, when gear 30 is simultaneously engaged with the first rack 41 and the second rack 42, is the air guide plate 50 in the closed state. When gear 30 is engaged with only one rack, it will be in the open state. Figures 8 to 10 As shown.

[0083] The gearbox 10 of this application is equipped with a motor 20 and a gear 30. The motor 20 is used to drive the gear 30 to rotate. The gear 30 meshes with the rack on the rack connecting plate 40. Since the rack connecting plate 40 is connected to the air guide plate 50, the gear 30 can drive the air guide plate 50 to open upward or downward through the rack connecting plate 40.

[0084] A single gear 30 can drive the air guide plate 50 to open upwards or downwards. The opening 113 of the housing allows the rack and pinion connecting plate 40 to rotate, providing sufficient space for the rack and pinion connecting plate 40 to drive the air guide plate 50 to rotate.

[0085] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A gearbox, characterized in that, include: Motor (20); A gear (30) is driven and connected to the motor (20), and a portion of the peripheral surface of the gear (30) is provided with teeth. The gear (30) is used to mesh with the rack on the rack connecting plate (40) connected to the air guide plate (50), thereby driving the air guide plate (50) to open upward or downward. A housing for housing the motor (20), gear (30), and rack connecting plate (40); The housing includes an opening (113) for the rack connecting plate (40) to rotate. The housing includes a second housing (12), which is provided with a track portion for guiding the rack connecting plate (40). The track portion includes a first V-shaped track (121), a second V-shaped track (122), and a third V-shaped track (123) arranged side by side. The first end of the first V-shaped track (121) and the first end of the third V-shaped track (123) are both open ends, and the second ends of the first V-shaped track (121) and the second ends of the third V-shaped track (123) are both closed ends. Both ends of the second V-shaped track (122) are closed ends. The rack connecting plate (40) is provided with a first slider, a second slider and a third slider, which cooperate with the first V-shaped track (121), the second V-shaped track (122) and the third V-shaped track (123) respectively. The first V-shaped track (121) and the second V-shaped track (122) are used to guide the rack connecting plate (40) to drive the air guide plate (50) to open downward. At this time, the rack connecting plate (40) disengages from the third V-shaped track (123). The second V-shaped track (122) and the third V-shaped track (123) cooperate to guide the rack connecting plate (40) to drive the air guide plate (50) to open upward. At this time, the rack connecting plate (40) disengages from the first V-shaped track (121).

2. The gearbox according to claim 1, characterized in that, The opening (113) is also used to allow the rack connecting plate (40) to pass through the housing.

3. The gearbox according to claim 1, characterized in that, The housing includes: The first housing (11) is provided with a motor receiving cavity (111).

4. An indoor unit for an air conditioner, characterized in that, Includes the gearbox (10) as described in any one of claims 1 to 3.

5. The indoor unit of the air conditioner according to claim 4, characterized in that, Also includes: Air guide plate (50), including air guide plate body (51); A rack and pinion connecting plate (40) is disposed on the inner side wall of the air guide plate body (51).

6. The indoor unit of the air conditioner according to claim 5, characterized in that, The rack connecting plate (40) includes: The first rack (41) extends in an arc shape toward one end of the rack connecting plate (40); and, The second rack (42) extends in an arc shape to the other end of the rack connecting plate (40).

7. The indoor unit of the air conditioner according to claim 6, characterized in that, The motor (20) is a bidirectional drive motor. The gear (30) is located between the first rack (41) and the second rack (42), and the gear (30) can drive the first rack (41) or the second rack (42) to rotate; When the gear (30) drives the first rack (41), the air guide plate (50) opens upward; when the gear (30) drives the second rack (42), the air guide plate (50) opens downward.

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