Transmission box and air conditioner indoor unit

Abstract

The utility model provides a transmission box and an air conditioner indoor unit. The transmission box comprises a box body, a cover body and a transmission assembly. The cover body is detachably assembled on the box body. The transmission assembly is installed in the box body and used for driving the vertical swing blade to rotate. The transmission assembly comprises two cranks and a connecting rod, the cranks comprise connecting plates, and connecting parts are arranged on the connecting plates. Two connecting holes are formed in the two ends of the connecting rod, and the connecting parts are matched with the connecting holes in an inserted mode so that one crank can rotate to drive the other crank to rotate. According to the transmission box and the air conditioner indoor unit, the problem that dust in the air is prone to being accumulated on the transmission assembly to cause abrasion of the transmission assembly can be solved, and the effects that dust accumulation of the transmission assembly is avoided, and abrasion of the transmission assembly is reduced are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to a transmission box and an air conditioner indoor unit. Background Art

[0002] Air conditioners can adjust and control parameters such as the temperature, humidity, and flow rate of indoor ambient air to create a more comfortable indoor environment, making them essential household appliances.

[0003] The air conditioner drives the air deflector to swing through a motor-driven transmission assembly, and the transmission assembly includes a crank and a connecting rod. During operation, the motor connected to the crank drives one crank to rotate, and one crank drives another crank to rotate through the connecting rod, thereby achieving synchronous swinging of multiple air deflectors. However, there is no sealing structure on the existing transmission assembly, and dust in the air is easy to accumulate on the transmission assembly, causing wear of the transmission assembly or jamming of the transmission, posing a greater quality and safety risk. Moreover, the connection structure between the crank and the connecting rod is unstable, which easily leads to poor stability in the transmission assembly, thereby causing problems such as asynchronous swinging of the air deflector or inconsistent swinging angles. Utility Model Content

[0004] In view of the above problems, the present utility model is proposed to provide a transmission box and an air-conditioning indoor unit that overcome the above problems or at least partially solve the above problems, and can solve the problem that dust in the air is easily accumulated on the transmission component and causes wear of the transmission component, thereby achieving the effect of avoiding dust accumulation on the transmission component and reducing wear of the transmission component.

[0005] Specifically, the utility model provides a transmission box, comprising:

[0006] Box body;

[0007] A cover body, the cover body can be detachably assembled on the box body;

[0008] A transmission assembly is installed in the box body and is used to drive the vertical swing blade to rotate; the transmission assembly includes two cranks and a connecting rod, the crank includes a connecting plate, and a connecting part is arranged on the connecting plate; two ends of the connecting rod have two connecting holes, and the connecting part is plugged into and matched with the connecting holes, so that the rotation of one crank drives the rotation of the other crank.

[0009] Optionally, the connecting rod is an upper arch structure, and a connecting rod limiting boss is provided on the cover body, and when the connecting rod moves, the connecting rod limiting boss overlaps with the connecting rod part to prevent the connecting rod from moving in the up and down directions;

[0010] The distance between the two connecting holes is a first preset distance, and the distance between the arch top of the connecting rod upper arch structure and a side of the connecting hole away from the upper arch structure is a second preset distance.

[0011] Optionally, the first preset distance is 53.01 mm to 53.05 mm; the second preset distance is 12.2 mm to 12.6 mm.

[0012] Optionally, the connecting portion includes a claw, and the claw includes a connecting column extending from the connecting plate, and a clamping portion arranged at the end of the connecting column;

[0013] The connecting hole is a stepped hole, and the diameter of one end of the stepped hole away from the connecting plate is larger than the diameter of the other end, so that the clamping portion is clamped with the stepped hole.

[0014] Optionally, a card slot is provided on the box body;

[0015] The cover body is provided with a buckle, and the buckle is engaged with the clamping groove so that the cover body and the box body can be detachably assembled.

[0016] Optionally, the box body is provided with a threaded hole and a positioning hole;

[0017] The cover body is provided with a mounting hole opposite to the threaded hole and a positioning column opposite to the positioning hole. The bolt passes through the mounting hole and is threadedly connected to the threaded hole so that the cover body and the box body can be detachably assembled; the positioning column is plugged into the positioning hole.

[0018] Optionally, a limiting structure is provided on the box body, and the limiting structure is configured as follows: when one edge of the crank is rotated to engage with the limiting structure, the crank has a first limit position; when the other edge of the crank is rotated to engage with the limiting structure, the crank has a second limit position.

[0019] Optionally, the crank further comprises a crankshaft, and the crankshaft is perpendicular to the connecting plate;

[0020] The bottom of the box body is provided with a crank hole and a convex strip, and the end of the crankshaft away from the cover body passes through the crank hole; the convex strip is arranged around the crank hole to support the connecting plate.

[0021] The utility model also provides an air-conditioning indoor unit, comprising:

[0022] A shell and a transmission box as described in any one of the above items, wherein the shell defines an air outlet, and the transmission box is installed on the upper and lower sides of the air outlet.

[0023] Optionally, two air outlets are arranged side by side laterally on the front side of the shell, and the transmission box is installed on the upper and lower sides of the air outlet; the transmission box on the upper side of one air outlet has the same structure as the transmission box on the lower side of the other air outlet.

[0024] In a transmission box and an indoor unit of an air conditioner of the utility model, a transmission assembly includes two cranks and a connecting rod, and the two cranks are connected by the connecting rod to achieve synchronous rotation. When the transmission assembly is working, the rotation of one crank drives the connecting rod to move, thereby driving the other crank to rotate, so that the two cranks have the same swing angle, and then the air guide plate connected to the crank swings synchronously, and the transmission structure is stable and reliable. The transmission assembly is installed in the transmission box, and the transmission box limits the position of the transmission assembly, so that the transmission of the transmission assembly is more stable, and the stability of the transmission assembly is improved.

[0025] Furthermore, the transmission assembly is arranged in the transmission box to prevent dust from falling on the transmission assembly, reduce wear of the transmission assembly or transmission jamming, and further improve the stability of the transmission assembly.

[0026] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0028] Figure 1 It is a schematic structural diagram of the assembly of a transmission component in a transmission box according to an embodiment of the utility model;

[0029] Figure 2 is a schematic structural diagram of a connecting rod according to an embodiment of the utility model;

[0030] Figure 3 yes Figure 2 Cross-sectional view at AA in the middle;

[0031] Figure 4 is a schematic structural diagram of a box body according to an embodiment of the utility model;

[0032] Figure 5 is a schematic structural diagram of a cover body according to an embodiment of the utility model;

[0033] Figure 6 is a schematic structural diagram of Qu Bin according to an embodiment of the utility model;

[0034] Figure 7 is a schematic structural diagram of a transmission box after installation according to an embodiment of the utility model;

[0035] Figure 8The utility model is a schematic structural diagram of a transmission box installed on an indoor unit of an air conditioner according to an embodiment of the utility model. DETAILED DESCRIPTION

[0036] Refer to the following Figures 1 to 8 To describe a transmission box and an air-conditioning indoor unit of an embodiment of the utility model. In the description of this embodiment, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0037] Unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix", "couple" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present utility model according to the specific circumstances.

[0038] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of this embodiment, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below", or "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0040] Figure 1 FIG. 1 is a schematic structural diagram of the transmission assembly in the transmission box according to an embodiment of the utility model. Figure 1 As shown, and refer to Figures 2 to 8 The embodiment of the utility model provides a transmission box 100, including a box body 10, a cover body 20 and a transmission assembly. The cover body 20 can be disassembled and assembled on the box body 10. The transmission assembly is installed in the box body 10, and is used to drive the vertical swing blade to rotate. The transmission assembly includes two cranks 310 and a connecting rod 320, and the crank 310 includes a connecting plate 311, and a connecting portion 313 is provided on the connecting plate 311. Two connecting holes 321 are provided at both ends of the connecting rod 320, and the connecting portion 313 is plugged into the connecting hole 321, so that the rotation of one crank 310 drives the rotation of the other crank 310.

[0041] In this embodiment, the transmission assembly includes two cranks 310 and a connecting rod 320, and the two cranks 310 are connected by the connecting rod 320 to achieve synchronous rotation. When the transmission assembly is working, the rotation of one crank 310 drives the connecting rod 320 to move, thereby driving the other crank 310 to rotate, so that the two cranks 310 have the same swing angle, thereby making the air guide plate connected to the crank 310 swing synchronously, and the transmission structure is stable and reliable. The transmission assembly is installed in the transmission box 100, and the transmission box 100 limits the position of the transmission assembly, thereby making the transmission of the transmission assembly more stable and improving the stability of the transmission assembly.

[0042] Furthermore, the transmission assembly is disposed in the transmission box 100 to prevent dust from falling on the transmission assembly, reduce wear of the transmission assembly or transmission jamming, and further improve the stability of the transmission assembly.

[0043] In some embodiments of the present invention, Figure 2 As shown, the connecting rod 320 is an upper arch structure, and a connecting rod limiting boss 240 is provided on the cover body 20. When the connecting rod 320 moves, the connecting rod limiting boss 240 partially overlaps with the connecting rod 320 to prevent the connecting rod 320 from moving in the up and down directions. The distance between the two connecting holes 321 is a first preset distance, and the distance between the arch top of the upper arch structure of the connecting rod 320 and the side of the connecting hole 321 away from the upper arch structure is a second preset distance.

[0044] In this embodiment, the projection of the connecting rod 320 in the box body 10 at least partially overlaps with the projection of the connecting rod limiting boss 240 in the box body 10, so that when the connecting rod 320 moves away from the box body 10, the connecting rod limiting boss 240 and the connecting rod 320 are blocked and matched. The connecting rod 320 is prevented from moving during the operation of the transmission assembly, thereby improving the stability of the transmission assembly.

[0045] In some embodiments of the present invention, the first preset distance is 53.01 mm to 53.05 mm. Preferably, the first preset distance is 53.03 mm.

[0046] In this embodiment, after multiple tests and verifications, when the first preset distance is 53.03 mm, no transmission interference phenomenon will occur during the operation of the transmission assembly, making the transmission performance of the transmission assembly more stable.

[0047] Further, the length of the connecting rod 320 is 60.83 mm. The second preset distance is 12.2 mm to 12.6 mm. Preferably, the second preset distance is 12.4 mm.

[0048] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the connecting portion 313 includes a claw, which includes a connecting column extending from the connecting plate 311 and a clamping portion arranged at the end of the connecting column. The connecting hole 321 is a stepped hole, and the diameter of one end of the stepped hole away from the connecting plate 311 is larger than the diameter of the other end, so that the clamping portion is clamped with the stepped hole.

[0049] In this embodiment, the connecting plate 311 and the connecting rod 320 are connected by clamping claws and step holes, the connection method is reliable, and installation and disassembly are relatively convenient.

[0050] Further, the step hole includes a first step hole section 3211 and a second step hole section 3212, and the first step hole section is located at one end of the step hole away from the connecting plate 311. The diameter of the first step hole section 3211 is 5.5 mm, and the height of the first step hole section 3211 is 2 mm. The diameter of the second step hole section 3212 is 4.08 mm to 4.12 mm, and preferably, the diameter of the second step hole section 3212 is 4.1 mm. The height of the second step hole section 3212 is 3.8 mm.

[0051] In some embodiments of the present invention, Figure 4 As shown, the box body 10 is provided with a slot 110. The cover body 20 is provided with a buckle 210, and the buckle 210 is engaged with the slot 110 so that the cover body 20 and the box body 10 can be detachably assembled.

[0052] In this embodiment, the box body 10 and the cover body 20 are detachably connected in the upper and lower parts, and the buckle 210 is connected in a simple manner, which is convenient for opening and closing the transmission box 100. In addition, the buckle 210 connection structure is stable, thereby improving the stability of the transmission box 100 structure.

[0053] In some embodiments of the present invention, Figure 1 and Figure 4 As shown, the box body 10 is provided with a threaded hole 120 and a positioning hole 130. The cover body 20 is provided with a mounting hole 220 opposite to the threaded hole 120 and a positioning column 230 opposite to the positioning hole 130. The bolt passes through the mounting hole 220 and is threadedly connected with the threaded hole 120, so that the cover body 20 and the box body 10 can be detachably assembled. The positioning column 230 is plugged into the positioning hole 130.

[0054] In this embodiment, the positioning hole 130 on the box body 10 is plugged into the positioning column 230 on the cover body 20 to align the box body 10 with the cover body 20. The bolt passes through the mounting hole 220 on the cover body 20 and the threaded hole 120 on the box body 10 to press the cover body 20 and the box body 10, thereby fixing the cover body 20 and the box body 10 and further improving the stability of the structure of the transmission box 100. The fixing of the transmission box 100 is completed by one bolt, so that the installation and disassembly process of the transmission box 100 is relatively simple, and the difficulty of installing and disassembling the transmission box 100 is reduced.

[0055] In some embodiments of the utility model, a limiting structure is provided on the box body 10, and the limiting structure is configured as follows: when one edge of the crank 310 is rotated to cooperate with the stopping structure, the crank 310 has a first limit position; when the other edge of the crank 310 is rotated to cooperate with the stopping structure, the crank 310 has a second limit position.

[0056] In this embodiment, a limiting structure is provided in the box body 10. After the crank 310 rotates to a certain angle, the limiting structure stops the crank 310 from rotating further, preventing the guide plate from rotating too much, which causes the mutual bite force of the double air guide plates to be too large, and avoids the appearance problems such as abnormal deformation of the guide plate. In addition, the limiting structure can prevent the air guide plate from rotating too much and colliding with the air duct, thereby improving the stability of the operation of the air conditioner indoor unit.

[0057] Furthermore, if Figure 1 and Figure 4As shown, the two cranks 310 are respectively a first crank 360 and a second crank 370. The limiting structure includes a stop groove 141 and a first limit block 142 on both sides of the first crank 360, a second limit block 143 and a third limit block 144 on both sides of the second crank 370, and a fourth limit block 145 between the limit block and the second limit block 143, and the fourth limit block 145 is matched with the connecting rod 320 at the second limit position. For example, the limit position of the crank 310 rotating counterclockwise is the first limit position, and the limit position of the crank 310 rotating clockwise is the second limit position. When the crank 310 is at the first limit position, the stop groove 141 blocks the left edge of the first crank 360 to block the first crank 360 from continuing to rotate counterclockwise, and the second limit block 143 blocks the left edge of the second crank 370 to block the second crank 370 from continuing to rotate counterclockwise. When the crank 310 is at the second extreme position, the first limit block 142 blocks the right edge of the first crank 360 to prevent the first crank 360 from continuing to rotate clockwise, the fourth limit block 145 blocks the connecting rod 320 from continuing to move to prevent the first crank 360 and the second crank 370 from continuing to rotate clockwise, and the third limit block 144 blocks the right edge of the second crank 370 to prevent the second crank 370 from continuing to rotate clockwise.

[0058] In some embodiments of the present invention, Figure 1 and Figure 4 As shown, the limiting structure includes an inclined surface. When the crank 310 is engaged with the limiting structure, the inclined surface contacts the edge of the crank 310 .

[0059] In this embodiment, when the crank 310 is at the first extreme position and the second extreme position, the inclined surface on the limiting structure contacts the edge of the crank 310, thereby increasing the contact area between the crank 310 and the limiting structure, preventing damage to the crank 310 and the limiting structure caused by a large distance between the crank 310 and the limiting structure, further improving the stability of the transmission assembly, and ensuring stable transmission of the transmission assembly.

[0060] In some embodiments of the present invention, Figure 6 As shown, the crank 310 further includes a crankshaft 312, which is perpendicular to the connecting plate 311. The bottom of the box body 10 is provided with a crank 310 hole 150 and a convex strip 160, and one end of the crankshaft 312 away from the cover body 20 passes through the crank 310 hole 150; the convex strip 160 is arranged around the crank 310 hole 150 to support the connecting plate 311.

[0061] In this embodiment, the crankshaft 312 is installed in the crank 310 hole 150, and the crank 310 hole 150 limits the position of the crankshaft 312, so that the crank 310 remains stable during the rotation process, thereby improving the stability of the transmission assembly. The convex strip 160 supports the connecting plate 311. When the crank 310 rotates, the convex strip 160 contacts the connecting plate 311, reducing the contact area between the connecting plate 311 and the box body 10, avoiding the wear of the connecting plate 311 or the box body 10 caused by the direct contact between the connecting plate 311 and the box body 10, thereby improving the stability of the transmission assembly.

[0062] In some embodiments of the present invention, Figure 6 As shown, the crankshaft 312 vertically passes through the connecting plate 311 , and the upper end of the crankshaft 312 is a limiting protrusion 3121 for plugging with the cover body 20 .

[0063] In this embodiment, a limiting protrusion 3121 is provided at the upper end of the crank 310, and the limiting protrusion 3121 is inserted into the cover body 20 and matched with the cover body 20. When the crank 310 rotates, the limiting protrusion 3121 rotates in the hole of the cover body 20, and the cover body 20 limits the position of the crank 310 to prevent the crank 310 from shaking when rotating, so that the crank 310 rotates more stably, thereby improving the stability of the air conditioner indoor unit and improving the user experience.

[0064] In some embodiments of the present invention, Figure 6 As shown, a support structure 350 is disposed on the upper surface of the connecting plate 311 to support the cover body 20 .

[0065] In this embodiment, after the crank 310 and the cover 20 are installed, the support structure 350 is between the crank 310 and the cover 20, and the support structure 350 supports the cover 20. When the crank 310 rotates, the support structure 350 contacts the cover 20, and there is a gap between the surface of the connecting plate 311 and the cover 20, so as to prevent the connecting plate 311 from contacting with the cover 20 and causing wear when the crank 310 rotates, thereby avoiding affecting the rotation of the crank 310, thereby improving the stability of the operation of the crank 310.

[0066] In some embodiments of the present invention, the support structure 350 includes a plurality of protrusions, and the plurality of protrusions are evenly arranged around the limiting protrusion 3121 .

[0067] In this embodiment, a plurality of protrusions are in contact with the cover 20 to support the cover 20. When the crankshaft 312 rotates, the plurality of protrusions rotate relative to the cover 20, reducing the contact area between the crank 310 and the cover 20, preventing friction between the support structure 350 and the cover 20 when the crank 310 rotates, making the rotation process of the crank 310 smoother, and reducing the wear of the support structure 350 or the cover 20.

[0068] In some embodiments of the present invention, Figure 6 As shown, the lower end of the crankshaft 312 is a convex cone structure 3122, and the convex cone structure 3122 is used to connect the vertical swing blade.

[0069] In this embodiment, the convex cone structure 3122 cooperates with the vertical swing leaf lock, and the connection method is simple, which facilitates the installation and removal of the crank 310 and the vertical swing leaf. In addition, the connection method of the convex cone structure 3122 is structurally stable, so that the rotation of the crankshaft 312 can drive the vertical swing leaf to swing stably, thereby improving the stability of the crank 310 during rotation.

[0070] In some embodiments of the utility model, the convex cone structure 3122 includes a first connector and a second connector, and the cross section of the second connector includes two opposite straight lines and two opposite curves. In this embodiment, the size of the second connector is larger than that of the first connector, and the second connector is clamped with the air guide plate. The connection method has a stable structure, so that the rotation of the crankshaft 312 can drive the vertical swing blade to swing stably, thereby improving the stability of the crank 310 during rotation.

[0071] In some embodiments of the present invention, Figure 6 As shown, the crank 310 also includes a stepped shaft section 3123 , which is located between the convex cone structure 3122 and the connecting plate 311 and is used for mating with the box body 10 .

[0072] In this embodiment, the lower end of the connecting plate 311 of the crank 310 is inserted into the box body 10 to cooperate with the box body 10. When the crank 310 rotates, the stepped shaft section 3123 rotates in the hole of the box body 10, and the box body 10 limits the position of the crank 310 from the bottom of the crank 310. The stepped shaft section 3123 cooperates with the box body 10 without gaps, preventing the crank 310 from shaking when rotating, making the crank 310 more stable when rotating, thereby improving the stability of the indoor unit of the air conditioner and improving the user's experience. In addition, the stepped shaft section 3123 cooperates with the box body 10 without gaps, which can prevent dust from entering the box body 10 through the hole of the box body 10, and avoid dust from entering and causing damage to the crank 310.

[0073] The embodiment of the utility model further provides an air conditioner indoor unit, comprising a housing 40 and a transmission box 100 in any one of the above embodiments, the housing 40 defines an air outlet 50 , and the transmission box 100 is installed on the upper and lower sides of the air outlet 50 .

[0074] In this embodiment, the upper and lower sides of the air outlet 50 of the transmission box 100 drive the vertical swing blades to swing, making the swing of the vertical swing blades more stable, improving the stability of the air outlet of the air conditioner indoor unit, and thus improving the user experience.

[0075] In some embodiments of the present invention, Figure 1 and Figure 7As shown, the transmission assembly further includes a motor 330 and a gear 340. The output shaft of the motor 330 is connected to the gear 340 to drive the gear 340 to rotate. The gear 340 is meshed with the crank 310, and the crank 310 is driven to rotate by the rotation of the gear 340.

[0076] In this embodiment, when the transmission assembly is working, the motor 330 is turned on, the output shaft of the motor 330 drives the gear 340 to rotate, the gear 340 drives one crank 310 to rotate, and one crank 310 drives another crank 310 to rotate synchronously through the connecting rod 320. Through the stable torque output of the gear 340, the crank 310 rotates a preset angle, and the connecting rod 320 can drive another crank 310 to rotate, and the transmission problem is reliable. Moreover, no matter which crank 310 is driven, a stable angle rotation can be achieved, thereby improving the stability of the transmission assembly.

[0077] Further, the motor 330 is fixed in the box body 10 via the motor fixing structure 170 . The gear 340 is fixed in the box body 10 via the gear fixing structure 180 .

[0078] In some embodiments of the present invention, Figure 1 and Figure 4 As shown, the gear fixing structure 180 includes an annular protrusion, and one side of the gear 340 has an annular groove with the rotating shaft of the gear 340 as the center. The annular protrusion is plug-fitted into the annular groove to fix the gear 340 on the box body 10.

[0079] In some embodiments of the present invention, Figure 8 As shown, two air outlets 50 are arranged side by side in a horizontal direction on the front side of the housing 40, and the transmission box 100 is installed on the upper and lower sides of the air outlet 50. The transmission box 100 on the upper side of one air outlet 50 is the same as the transmission box 100 on the lower side of the other air outlet 50.

[0080] In this embodiment, the transmission box 100 is a universal structure, which is convenient for manufacturing, improves the production efficiency and quality of the transmission box 100, and further improves the air quality of the air conditioner indoor unit. Moreover, the transmission box 100 is a universal structure, which can save production molds, reduce the production cost of the transmission box 100, and further reduce the production cost of the air conditioner indoor unit. For example, the air outlet 50 is divided into a first air outlet 50 and a second air outlet 50, and the transmission box 100 on the upper side of the first air outlet 50 and the transmission box 100 on the lower side of the second air outlet 50 are universal structures. The transmission box 100 on the lower side of the first air outlet 50 and the transmission box 100 on the upper side of the second air outlet 50 are universal structures.

[0081] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A transmission box, characterized in that: include: Box body; A cover body, the cover body can be detachably assembled on the box body; A transmission assembly, which is installed in the box body and is used to drive the vertical swing blade to rotate; the transmission assembly includes two cranks and a connecting rod, the crank includes a connecting plate, and a connecting part is provided on the connecting plate; two ends of the connecting rod have two connecting holes, and the connecting part is plugged into and matched with the connecting hole, so that the rotation of one crank drives the rotation of the other crank.

2. The transmission box according to claim 1, characterized in that: The connecting rod is an upward arch structure, and a connecting rod limiting boss is provided on the cover body. When the connecting rod moves, the connecting rod limiting boss overlaps with the connecting rod part to prevent the connecting rod from moving in the up and down directions; The distance between the two connecting holes is a first preset distance, and the distance between the arch top of the connecting rod upper arch structure and a side of the connecting hole away from the upper arch structure is a second preset distance.

3. The transmission box according to claim 2, characterized in that: The first preset distance is 53.01 mm to 53.05 mm; the second preset distance is 12.2 mm to 12.6 mm.

4. The transmission box according to claim 1, characterized in that: The connecting portion includes a claw, and the claw includes a connecting column extending from the connecting plate, and a clamping portion arranged at the end of the connecting column; The connecting hole is a stepped hole, and the diameter of one end of the stepped hole away from the connecting plate is larger than the diameter of the other end, so that the clamping portion is clamped with the stepped hole.

5. The transmission box according to claim 1, characterized in that: The box body is provided with a card slot; The cover body is provided with a buckle, and the buckle is engaged with the clamping groove so that the cover body and the box body can be detachably assembled.

6. The transmission box according to claim 1, characterized in that: The box body is provided with a threaded hole and a positioning hole; The cover body is provided with a mounting hole opposite to the threaded hole and a positioning column opposite to the positioning hole. The bolt passes through the mounting hole and is threadedly connected to the threaded hole so that the cover body and the box body can be detachably assembled; the positioning column is plugged into the positioning hole.

7. The transmission box according to claim 1, characterized in that: A limiting structure is provided on the box body, and the limiting structure is configured as follows: when one edge of the crank rotates to engage with the limiting structure, the crank has a first limit position; when the other edge of the crank rotates to engage with the limiting structure, the crank has a second limit position.

8. The transmission box according to claim 7, characterized in that: The crank also includes a crankshaft, which is perpendicular to the connecting plate; The bottom of the box body is provided with a crank hole and a convex strip, and the end of the crankshaft away from the cover body passes through the crank hole; the convex strip is arranged around the crank hole to support the connecting plate.

9. An air conditioner indoor unit, characterized in that: include: A housing and a transmission box as claimed in any one of claims 1 to 8, wherein the housing defines an air outlet, and the transmission box is installed on upper and lower sides of the air outlet.

10. The air conditioner indoor unit according to claim 9, characterized in that: Two air outlets are arranged side by side laterally on the front side of the shell, and the transmission box is installed on the upper and lower sides of the air outlet; the transmission box on the upper side of one air outlet has the same structure as the transmission box on the lower side of the other air outlet.

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