Indoor unit

Abstract

The present invention provides an indoor unit, relating to the technical field of air conditioning. The indoor unit includes a middle frame, an air guide door, a motor, and a drive gear. The air guide door includes an integrally formed rotating shaft and a gear shaft. The gear shaft is located at the end of the rotating shaft and is rotatably mounted on the middle frame. This avoids the need for a separate gear to be assembled on the rotating shaft of the air guide door, reduces the number of parts, improves assembly efficiency, and ensures transmission accuracy. The motor is mounted on the middle frame, and the drive gear is connected to the motor and meshes with the gear shaft to control the rotation angle of the rotating shaft. This not only simplifies the transmission form, improves assembly efficiency, but also achieves high transmission accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an indoor unit. Background Art

[0002] The indoor unit's air guide door is installed at the air outlet and is rotatably connected to the middle frame, allowing it to open or close the air outlet. In the prior art, the air guide door is typically rotatably mounted on the middle frame via a support. A transmission structure is then assembled on the air guide door, which then cooperates with a drive member on the middle frame to drive the transmission structure and the air guide door to rotate.

[0003] However, the existing transmission structure and driving parts have many parts, the assembly efficiency is low, and large assembly errors are prone to occur, which affects the transmission effect. Summary of the Invention

[0004] The problem solved by the present invention is that the transmission structure and driving parts of the existing air guide door have many parts, the assembly efficiency is low, and large assembly errors are prone to occur, which affects the transmission effect.

[0005] In order to solve the above problems, the present invention provides an indoor unit, which includes:

[0006] middle frame;

[0007] The air guide door includes an integrally formed rotating shaft and a gear shaft, the gear shaft is located at the end of the rotating shaft, and the rotating shaft is rotatably mounted on the middle frame;

[0008] Motor, installed on the middle frame;

[0009] The driving gear is connected to the motor and meshes with the gear shaft.

[0010] The indoor unit provided by the present invention has at least the following beneficial effects:

[0011] 1. The rotating shaft of the air guide door and the gear shaft are integrally formed, which avoids the need to assemble a gear separately on the rotating shaft of the air guide door, reduces the number of parts, improves assembly efficiency, and ensures transmission accuracy;

[0012] 2. The gear shaft on the rotating shaft is engaged with the driving gear connected to the motor to control the rotation angle of the rotating shaft. This not only has a simple transmission form and high assembly efficiency, but also has high transmission accuracy.

[0013] In an optional embodiment, the center line of the rotating shaft coincides with the center line of the gear shaft.

[0014] In this way, the need for any turning connector between the rotating shaft and the gear shaft is avoided, the structure is simplified, and the production difficulty is reduced. Moreover, the rotating shaft can rotate synchronously with the gear shaft, and the transmission accuracy is high.

[0015] In an optional embodiment, gear shafts are respectively provided at opposite ends of the rotating shaft, and each gear shaft is connected to the driving gear and the motor.

[0016] In this way, gear shafts for transmitting driving force are set at both ends of the rotating shaft, so that both ends of the rotating shaft can be subjected to force synchronously, improving the stability of the rotating shaft rotation, and providing support force to both ends of the rotating shaft at the same time, avoiding deformation or shaking of the rotating shaft due to excessive length.

[0017] In an optional embodiment, a positioning column is further provided on the middle frame, and a positioning hole is provided on the end face of the gear shaft. The positioning column and the positioning hole can be relatively rotatably matched, and the positioning column is used to support the air guide door.

[0018] In this way, the positioning column on the middle frame can support the gear shaft and the rotating shaft, and facilitate the rotation of the gear shaft and the rotating shaft. Not only is the connection form simple, but also the assembly efficiency is high.

[0019] In an optional embodiment, the center lines of the positioning column, the positioning hole, the gear shaft, and the rotating shaft all coincide.

[0020] In this way, the positioning column, the positioning hole, the gear shaft and the rotating shaft are arranged in a collinear manner, which not only has a simple structure but also has high assembly efficiency.

[0021] In an optional embodiment, the positioning column includes:

[0022] A supporting section, one end of which is connected to the middle frame;

[0023] The matching segment is connected to the other end of the supporting segment, the matching segment matches the positioning hole, and the diameter of the matching segment is smaller than the diameter of the supporting segment.

[0024] In this way, the end face of the supporting section used to connect the mating section can play a role in limiting the positioning column, preventing the positioning column from being inserted too deeply into the positioning hole, reducing the difficulty for the staff to control the assembly of the positioning column and the positioning hole on the gear shaft, and the positioning columns at both ends of the rotating shaft and the gear shaft can limit the distance that the rotating shaft moves along the length direction, preventing the gear shaft from disengaging from the driving gear.

[0025] In an optional embodiment, a deformation hole is provided on the end surface of the fitting segment away from the supporting segment to facilitate the insertion of the fitting segment into the positioning hole.

[0026] In this way, during the process of inserting the mating section of the locating column into the locating hole on the gear shaft, the mating section can produce a certain amount of shrinkage deformation under the action of the deformation hole, which makes it easy for the mating section to be inserted into the locating hole on the gear shaft quickly and easily. Moreover, the locating column and the gear shaft rotate relative to each other during work. Under the contraction action of the deformation hole, the locating column and the locating hole of the gear shaft can be tightly fitted together without generating a large sliding friction between the two.

[0027] In an optional embodiment, an end cover is further provided on the middle frame, and the positioning column is connected to the middle frame via the end cover, and the end cover is located at an end of the positioning column away from the rotating shaft.

[0028] In this way, by arranging an end cover on the middle frame to support the positioning column, not only is the structure simple, but the end cover is located at the end of the positioning column away from the rotating shaft, which is equivalent to the end cover being able to cover the end faces of the positioning column, gear shaft and rotating shaft. When the user observes from the side of the indoor unit, he sees that the end cover is stationary and will not see the rotating rotating shaft and gear shaft, which can present a static visual effect and a more technological feel.

[0029] In an optional embodiment, a receiving groove is opened on the middle frame, the rotating shaft, gear shaft and positioning column are located in the receiving groove, and the end cover is connected to the end of the receiving groove to cover the end faces of the rotating shaft, gear shaft and positioning column.

[0030] In this way, a accommodating groove is provided to accommodate the rotating shaft, gear shaft and positioning column, so as to prevent these parts from protruding from the outer casing of the indoor unit, making the appearance of the indoor unit relatively smooth and beautiful. Moreover, the end cover is connected to the end of the accommodating groove, which can more comprehensively hide the rotating shaft, gear shaft and positioning column. The user will only observe that the air guide door is rotating, thereby improving the visual effect of the indoor unit.

[0031] In an optional embodiment, a protrusion is provided on the outer circumferential surface of the gear shaft, and a first limit block and a second limit block are provided at intervals on the middle frame. The first limit block and the second limit block are used to limit the protrusion from rotating between the first limit block and the second limit block along with the gear shaft.

[0032] In this way, the first and second limit blocks limit the protrusions, which can prevent the shaft and gear shaft from rotating excessively, thereby preventing the air guide door from rotating excessively and hitting other parts of the indoor unit in the event of a motor failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic structural diagram of an indoor unit provided in an embodiment of the present invention;

[0034] Figure 2 for Figure 1 Enlarged view of the part A in the middle;

[0035] Figure 3 for Figure 1 Schematic diagram of the structure of the middle air guide door;

[0036] Figure 4 for Figure 3 Enlarged view of the middle part B;

[0037] Figure 5 A partial cross-sectional schematic diagram of an indoor unit provided by an embodiment of the present invention;

[0038] Figure 6for Figure 5 Enlarged view of part C in the middle.

[0039] Description of reference numerals:

[0040] 100-indoor unit; 110-middle frame; 111-air outlet; 112-accommodating slot; 113-first limit block; 114-second limit block; 115-side panel; 120-end cover; 130-positioning column; 131-support section; 132-matching section; 133-deformation hole; 140-air guide door; 141-rotating shaft; 142-gear shaft; 143-positioning hole; 144-bump; 150-motor; 160-drive gear. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0042] See also Figure 1 and Figure 2 This embodiment provides an indoor unit 100 , which includes a middle frame 110 , an end cover 120 , a positioning column 130 , an air guide door 140 , a motor 150 and a driving gear 160 .

[0043] The middle frame 110 is provided with an air outlet 111, and the air guide door 140 is rotatably mounted on the middle frame 110 to open or close the air outlet 111. The motor 150 is mounted on the side plate 115 of the middle frame 110, and the driving gear 160 is connected to the motor 150.

[0044] See also Figure 2 and Figure 3 The air guide door 140 includes a rotating shaft 141 and a gear shaft 142. The rotating shaft 141 is located on one side of the air outlet 111 and is arranged along the length of the air outlet 111. The gear shaft 142 is connected to the end of the rotating shaft 141. The rotating shaft 141 and the gear shaft 142 are integrally formed, eliminating the need for a separate gear to be assembled on the rotating shaft 141 of the air guide door 140. This reduces the number of parts, improves assembly efficiency, and ensures transmission accuracy.

[0045] The gear shaft 142 is engaged with the driving gear 160, and the driving gear 160 is driven to rotate by the motor 150, thereby driving the gear shaft 142 and the rotating shaft 141 to rotate, thereby realizing the control of the rotation angle of the rotating shaft 141. Not only is the transmission form simple, the assembly efficiency is high, but the transmission accuracy is also high.

[0046] Preferably, the center line of the rotating shaft 141 coincides with the center line of the gear shaft 142. This avoids the need for any turning connection between the rotating shaft 141 and the gear shaft 142, simplifies the structure, reduces production difficulty, and allows the rotating shaft 141 to rotate synchronously with the gear shaft 142, resulting in high transmission accuracy.

[0047] Gear shafts 142 are provided at opposite ends of the rotating shaft 141, and each gear shaft 142 is connected to the driving gear 160 and the motor 150. Thus, by providing gear shafts 142 for transmitting driving force at both ends of the rotating shaft 141, the two ends of the rotating shaft 141 can be subjected to force synchronously, thereby improving the rotation stability of the rotating shaft 141 and providing support force to both ends of the rotating shaft 141, thereby preventing the rotating shaft 141 from deforming or shaking due to excessive length.

[0048] In other embodiments, the gear shaft 142 may be provided at only one end of the rotating shaft 141 , and a bearing may be provided at the other end of the rotating shaft 141 , and the bearing may be supported on the middle frame 110 , which may also provide stable support for the rotating shaft 141 .

[0049] See also Figure 2 The middle frame 110 is also provided with an end cover 120 and a positioning column 130. The end cover 120 is connected to the middle frame 110. The positioning column 130 is connected to the middle frame 110 through the end cover 120. The end cover 120 is located at the end of the positioning column 130 away from the rotating shaft 141. The end surface of the gear shaft 142 is provided with a positioning hole 143 (see Figure 4 ), the positioning post 130 and the positioning hole 143 are relatively rotatably engaged, and the positioning post 130 is used to support the air guide door 140. In this way, the positioning post 130 on the middle frame 110 can support the gear shaft 142 and the rotating shaft 141, and facilitate the rotation of the gear shaft 142 and the rotating shaft 141, not only simplifying the connection form, but also improving assembly efficiency.

[0050] The center lines of the positioning post 130, the positioning hole 143, the gear shaft 142, and the rotating shaft 141 all coincide, and the end cap 120 can be perpendicular to the center line of the positioning post 130. In this way, the positioning post 130, the positioning hole 143, the gear shaft 142, and the rotating shaft 141 are arranged in a collinear manner, which not only simplifies the structure but also improves the assembly efficiency.

[0051] In this way, by arranging the end cover 120 on the middle frame 110 to support the positioning column 130, not only the structure is simple, but also the end cover 120 is located at the end of the positioning column 130 away from the rotating shaft 141, which is equivalent to the end cover 120 being able to cover the end faces of the positioning column 130, the gear shaft 142 and the rotating shaft 141. When the user observes from the side of the indoor unit 100, he sees that the end cover 120 is in a stationary state and will not see the rotating rotating shaft 141 and the gear shaft 142, which can present a static visual effect and a more technological feel.

[0052] See also Figure 2 The middle frame 110 is provided with a receiving groove 112, in which the rotating shaft 141, the gear shaft 142, and the positioning column 130 are located. The end cover 120 is connected to the end of the receiving groove 112 to shield the end surfaces of the rotating shaft 141, the gear shaft 142, and the positioning column 130. In this way, the provision of the receiving groove 112 to accommodate the rotating shaft 141, the gear shaft 142, and the positioning column 130 prevents these parts from protruding from the housing of the indoor unit 100, making the appearance of the indoor unit 100 relatively smooth and beautiful. Moreover, the end cover 120 is connected to the end of the receiving groove 112, which can more completely conceal the rotating shaft 141, the gear shaft 142, and the positioning column 130. The user only observes the rotation of the air guide door 140, thereby improving the visual effect of the indoor unit 100.

[0053] A protrusion 144 is provided on the outer circumference of the gear shaft 142. A first stopper 113 and a second stopper 114 are provided in the receiving groove 112 of the middle frame 110. The first stopper 113 and the second stopper 114 are used to limit the rotation of the protrusion 144 along with the gear shaft 142 between the first stopper 113 and the second stopper 114. Thus, the first stopper 113 and the second stopper 114 limit the protrusion 144, thereby preventing the shaft 141 and the gear shaft 142 from excessively rotating. This also prevents the air guide door 140 from excessively rotating and striking other parts of the indoor unit 100 in the event of a rotational failure of the motor 150.

[0054] Specifically, an arc structure can be provided in the accommodating groove 112, the outer circumference of the arc structure is connected to the inner circumference of the accommodating groove 112, and the gear shaft 142 can be rotatably installed inside the arc structure. The two ends of the arc structure form a first limit block 113 and a second limit block 114 respectively. In this way, it can not only limit the gear shaft 142, but also support the gear shaft 142, thereby improving the stability of the gear shaft 142 and the rotating shaft 141.

[0055] See also Figure 5 and Figure 6 The positioning column 130 includes a supporting section 131 and a mating section 132. One end of the supporting section 131 is connected to the end cap 120, and the mating section 132 is connected to the other end of the supporting section 131. The mating section 132 is mated with the positioning hole 143, and the diameter of the mating section 132 is smaller than the diameter of the supporting section 131. In this way, the end surface of the supporting section 131 used to connect with the mating section 132 can limit the positioning column 130, preventing the positioning column 130 from being inserted too deeply into the positioning hole 143, thereby reducing the difficulty for the staff to control the assembly of the positioning column 130 with the positioning hole 143 on the gear shaft 142. Moreover, the positioning columns 130 at both ends of the rotating shaft 141 and the gear shaft 142 can limit the distance that the rotating shaft 141 can move along the length direction, preventing the gear shaft 142 from disengaging from the driving gear 160.

[0056] A deformation hole 133 is formed on the end surface of the mating section 132 away from the supporting section 131 to facilitate insertion of the mating section 132 into the positioning hole 143. Thus, during insertion of the mating section 132 of the positioning post 130 into the positioning hole 143 on the gear shaft 142, the mating section 132 can undergo a certain degree of contraction and deformation under the action of the deformation hole 133, facilitating quick and easy insertion of the mating section 132 into the positioning hole 143 on the gear shaft 142. Furthermore, the positioning post 130 and the gear shaft 142 rotate relative to each other during operation. Due to the contraction of the deformation hole 133, the positioning post 130 and the positioning hole 143 of the gear shaft 142 can be tightly mated without generating significant sliding friction between the two.

[0057] In this embodiment, the positioning column 130, the end cover 120 and the middle frame 110 can be integrally formed, which not only ensures a firm connection but also reduces the number of parts, eliminates the need for assembly processes, and improves the assembly efficiency of the indoor unit 100.

[0058] The assembly process of the indoor unit 100 provided in this embodiment is as follows:

[0059] See also Figure 5 and Figure 6 First, assemble the gear shaft 142 on the air guide door 140 to the positioning column 130 through the positioning hole 143. In this embodiment, gear shafts 142 are provided at both ends of the rotating shaft 141, and the positioning holes 143 of the two gear shafts 142 need to be assembled to the positioning columns 130 on both sides respectively; then, assemble the driving gear 160 to the output shaft of the motor 150, and then assemble the driving gear 160 and the motor 150 together to the side plate 115 of the middle frame 110, and keep the driving gear 160 and the gear shaft 142 in a meshing state.

[0060] Of course, the driving gear 160 and the motor 150 may also be assembled to the side plate 115 of the middle frame 110 first, and then the gear shaft 142 of the air guide door 140 may be assembled to the positioning column 130 .

[0061] The indoor unit 100 provided in this embodiment has the following beneficial effects:

[0062] 1. The rotating shaft 141 of the air guide door 140 and the gear shaft 142 are integrally formed, eliminating the need to separately assemble gears on the rotating shaft 141 of the air guide door 140 , reducing the number of parts, improving assembly efficiency, and ensuring transmission accuracy;

[0063] 2. The positioning column 130, the end cover 120 and the middle frame 110 are integrally formed, which not only ensures a firm connection but also further reduces the number of parts and improves the assembly efficiency of the indoor unit 100;

[0064] 3. The gear shaft 142 directly meshes with the drive gear 160 on the output shaft of the motor 150 to control the rotation angle of the rotating shaft 141. This not only simplifies the transmission form and improves assembly efficiency, but also achieves high transmission accuracy.

[0065] 4. The positioning column 130, the positioning hole 143, the gear shaft 142 and the rotating shaft 141 are arranged in a collinear manner, which not only simplifies the structure but also improves the assembly efficiency;

[0066] 5. The diameter of the mating section 132 on the positioning post 130 is smaller than the diameter of the supporting section 131, so that the end surface of the supporting section 131 used to connect to the mating section 132 can limit the positioning post 130, preventing the positioning post 130 from being inserted too deeply into the positioning hole 143, thereby reducing the difficulty for the staff to control the assembly of the positioning post 130 and the positioning hole 143 on the gear shaft 142. Moreover, the positioning posts 130 at both ends of the rotating shaft 141 and the gear shaft 142 can limit the distance that the rotating shaft 141 can move along the length direction, preventing the gear shaft 142 from disengaging from the drive gear 160;

[0067] 6. A deformation hole 133 is formed on the end surface of the mating section 132 away from the supporting section 131. When the mating section 132 of the positioning post 130 is inserted into the positioning hole 143 on the gear shaft 142, the mating section 132 can undergo a certain degree of contraction and deformation under the action of the deformation hole 133, facilitating quick and easy insertion of the mating section 132 into the positioning hole 143 on the gear shaft 142. Furthermore, the positioning post 130 and the gear shaft 142 rotate relative to each other during operation. Under the contraction action of the deformation hole 133, the positioning post 130 and the positioning hole 143 of the gear shaft 142 can be tightly fitted together without generating significant sliding friction between the two.

[0068] 7. Providing an end cap 120 on the middle frame 110 to support the positioning post 130 not only simplifies the structure, but also, because the end cap 120 is located at the end of the positioning post 130 away from the rotating shaft 141, it effectively shields the end faces of the positioning post 130, the gear shaft 142, and the rotating shaft 141. When the user observes the indoor unit 100 from the side, the end cap 120 is stationary, and the rotating rotating shaft 141 and gear shaft 142 are not visible, creating a static visual experience and a more technological feel.

[0069] 8. A first limit block 113 and a second limit block 114 are provided in the accommodating groove 112 of the middle frame 110, which are used to limit the rotation of the protrusion 144 on the gear shaft 142 between the first limit block 113 and the second limit block 114 of the gear. This can prevent the rotating shaft 141 and the gear shaft 142 from excessive rotation, and also prevent the air guide door 140 from excessive rotation and hitting other parts of the indoor unit 100 in the event of a rotation failure of the motor 150.

[0070] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. An indoor unit, characterized in that: The indoor unit comprises: A middle frame (110), wherein the middle frame (110) is further provided with an end cover (120) and a positioning column (130), and the positioning column (130) is connected to the middle frame (110) through the end cover (120); An air guide door (140), the air guide door (140) comprising an integrally formed rotating shaft (141) and a gear shaft (142), the gear shaft (142) being located at an end of the rotating shaft (141), the end cover (120) being located at an end of the positioning column (130) away from the rotating shaft (141), the rotating shaft being rotatably mounted on the middle frame, the center line of the rotating shaft (141) coinciding with the center line of the gear shaft (142), a positioning hole (143) being provided on an end surface of the gear shaft (142), the positioning column (130) being relatively rotatably engaged with the positioning hole (143), and the positioning column (130) being used to support the air guide door (140); A motor (150) is mounted on the middle frame (110); A driving gear (160) is connected to the motor (150) and meshes with the gear shaft (142).

2. The indoor unit according to claim 1, characterized in that: The gear shafts (142) are respectively provided at opposite ends of the rotating shaft (141), and each gear shaft (142) is connected to the driving gear (160) and the motor (150).

3. The indoor unit according to claim 1, characterized in that: The center lines of the positioning column (130), the positioning hole (143), the gear shaft (142), and the rotating shaft (141) all coincide.

4. The indoor unit according to claim 1, wherein: The positioning column (130) includes: a supporting section (131), one end of the supporting section (131) being connected to the middle frame (110); The matching segment (132) is connected to the other end of the supporting segment (131), the matching segment (132) matches the positioning hole (143), and the diameter of the matching segment (132) is smaller than the diameter of the supporting segment (131).

5. The indoor unit according to claim 4, characterized in that: A deformation hole (133) is provided on the end surface of the matching section (132) away from the supporting section (131), so as to facilitate the insertion of the matching section (132) into the positioning hole (143).

6. The indoor unit according to claim 1, characterized in that: The middle frame (110) is provided with a receiving groove (112), the rotating shaft (141), the gear shaft (142) and the positioning column (130) are located in the receiving groove (112), and the end cover (120) is connected to the end of the receiving groove (112) to cover the end surfaces of the rotating shaft (141), the gear shaft (142) and the positioning column (130).

7. The indoor unit according to claim 1, wherein: A protrusion (144) is provided on the outer peripheral surface of the gear shaft (142), and a first limiting block (113) and a second limiting block (114) are provided on the middle frame (110) at intervals, wherein the first limiting block (113) and the second limiting block (114) are used to limit the protrusion (144) from rotating between the first limiting block (113) and the second limiting block (114) along with the gear shaft (142).

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