An air conditioner

Abstract

The present invention provides an air conditioner, relating to the technical field of air conditioning. The air conditioner includes a middle frame, a drive box, and an air guide door disposed on the outer side of the middle frame. The middle frame has a transmission opening, and a transmission box is further disposed at the end of the drive box. The transmission boxes are transmission-connected to the drive box and are disposed on both sides of the transmission opening. A transmission shaft is disposed on one side edge of the air guide door, and a clearance notch is disposed on the transmission shaft. The transmission box is located within the clearance notch and is transmission-connected to the transmission shaft. The width of the transmission box is greater than the width of the clearance notch, so that the transmission box obscures the clearance notch, thereby avoiding the appearance of a gap and the appearance of a dark shadow. Compared with the prior art, the present invention can avoid the appearance of a dark shadow at the connection when the air guide door rotates, thereby improving the visual experience.

Description

Technical Field

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

[0002] Currently, the air guide door on an air conditioner is typically connected to the drive unit via a bracket. This drive method is not suitable for use when the air guide door is located outside the middle frame. Furthermore, a structure has emerged in which the drive unit extends outward to drive the air guide door. However, with a direct drive unit, a gap easily forms at the connection between the drive unit and the air guide door, creating a dark shadow and affecting the overall appearance. Summary of the Invention

[0003] The problem solved by the present invention is how to avoid interference when the air guide door rotates and avoid black shadows on the appearance.

[0004] To solve the above problems, the present invention adopts the following technical solutions.

[0005] In one aspect, the present invention provides an air conditioner, comprising a middle frame, a drive box and an air guide door arranged on the outside of the middle frame, the middle frame being provided with a transmission opening, and a transmission box being further provided at the end of the drive box, the transmission box being transmission-connected to the drive box and respectively arranged on both sides of the transmission opening, a transmission shaft being provided on one side edge of the air guide door, a clearance gap being provided on the transmission shaft, the transmission box being located at the clearance gap of the transmission shaft and being transmission-connected to the transmission shaft for driving the transmission shaft to rotate, the width of the transmission box being greater than the width of the clearance gap so that the transmission box blocks the clearance gap.

[0006] The air conditioner provided by the present invention has a transmission opening formed in the middle frame, allowing the end of the drive box to extend through the transmission opening and connect to the transmission shaft of the air guide door via a transmission box disposed at the end. The transmission shaft has a clearance notch formed therein, the transmission box is located within the clearance notch, and the width of the transmission box is greater than the width of the clearance notch, so that the transmission box can cover the clearance notch, thereby avoiding the appearance of a gap and the appearance of a dark shadow. Compared with the prior art, the air conditioner provided by the present invention can avoid the appearance of a dark shadow at the connection point, thereby improving the appearance.

[0007] Furthermore, the width of the clearance gap is greater than the width of the end portion of the drive box, so as to avoid interference between the transmission shaft and the end portion of the drive box when the transmission shaft rotates.

[0008] In the air conditioner provided by the present invention, the width of the clearance gap is larger than the end of the driving box, thereby avoiding interference between the transmission shaft and the end of the driving box when rotating, and ensuring smooth movement of the air guide door.

[0009] Furthermore, the transmission shaft includes a transmission shaft barrel and a transmission shaft core, the transmission shaft core is accommodated in the transmission shaft barrel, and the clearance gap is opened on the transmission shaft barrel, so that the transmission shaft core is exposed, and the transmission box is connected to the transmission shaft core in a transmission manner.

[0010] The air conditioner provided by the present invention, by arranging the transmission shaft cylinder and the transmission core shaft, enables the transmission shaft to realize power transmission by utilizing the hollow structure, thereby realizing the weight reduction function.

[0011] Furthermore, the transmission shaft cylinder includes a first half-shaft sleeve and a second half-shaft sleeve, the transmission shaft core is arranged on the inner side of the first half-shaft sleeve, and the second half-shaft sleeve is clamped on the first half-shaft sleeve and covers the transmission shaft core.

[0012] The air conditioner provided by the present invention has a transmission shaft barrel formed by snap-joining two half-shaft sleeves, which facilitates the production of the internal shaft core. Furthermore, the shaft body, the first half-shaft sleeve, and the second half-shaft sleeve can be formed separately, further reducing the production difficulty. Furthermore, the snap-jointed assembly method improves assembly efficiency.

[0013] Furthermore, the drive box includes a first box body and a drive gear, and the transmission box includes a second box body and a transmission gear. The end of the first box body extends out of the transmission opening and is connected to the second box body. The drive gear is arranged in the first box body, and the transmission gear is arranged in the second box body. The drive gear and the transmission gear are meshed with each other, and the transmission gear is connected to the transmission shaft for transmission. The width of the second box body is greater than the width of the clearance gap, and the width of the first box body is less than the width of the clearance gap.

[0014] The air conditioner provided by the present invention realizes power transmission through the mutual engagement of the driving gear and the transmission gear, thereby improving the stability of power transmission. Through the arrangement of the first box body and the second box body, the driving gear and the transmission gear can be accommodated. At the same time, the width of the first box body is smaller than the width of the clearance gap, which can avoid interference between the first box body and the transmission shaft. The width of the second box body is larger than the width of the clearance gap, which can cover the width of the clearance gap and avoid the formation of a gap between the second box body and the edge of the clearance gap to cause a black shadow in appearance.

[0015] Furthermore, a motor is provided on the first box body, and the motor is located on the inner side of the middle frame. The output shaft of the motor is connected to the driving gear to drive the driving gear to rotate.

[0016] The air conditioner provided by the present invention installs the motor on the first box body and directly connects the output shaft with the driving gear, thereby providing power for the transmission shaft to rotate, and is easy to install, saving the installation space of the motor.

[0017] Furthermore, a transmission pin sleeve is provided on the transmission gear, and the transmission pin sleeve extends out of the second box body and is connected to the transmission shaft.

[0018] The air conditioner provided by the present invention can realize smooth transmission of power between the transmission shaft and the transmission gear by arranging the transmission pin sleeve.

[0019] Furthermore, the drive box also includes a mounting frame, which is arranged on the edge of the first box body. A mounting seat is provided on the mounting frame, and a mounting hole is opened on the mounting seat. A fixing connector for fixing the mounting frame is assembled in the mounting hole.

[0020] The air conditioner provided by the present invention can fix the first box body by arranging the mounting frame, thereby ensuring the stability of the first box body.

[0021] Furthermore, a receiving groove is provided on the outer side of the middle frame, and an air outlet is also provided on the bottom side of the middle frame. The receiving groove is located on the upper side of the air outlet, the transmission opening passes through the receiving groove, the end of the drive box extends to the receiving groove, the transmission shaft is rotatably accommodated in the receiving groove, and the air guide door is used to open or close the air outlet under the drive of the transmission shaft.

[0022] The air conditioner provided by the present invention can reduce the protrusion height of the transmission shaft relative to the middle frame by providing a receiving groove on the outer side of the middle frame, and the transmission shaft is accommodated in the receiving groove, thereby making the overall appearance of the air conditioner more flat, and by providing an receiving groove on the upper side of the air outlet, the air guide door can be closed or opened from top to bottom, thereby improving the adjustment range of the air guide door.

[0023] Furthermore, a panel is provided on the outer side of the middle frame, and the panel extends to the upper edge of the accommodating groove and is loosely fitted with the transmission shaft.

[0024] The air conditioner provided by the present invention can improve the external appearance of the air conditioner by providing a panel, and at the same time, the panel extends to the upper edge of the accommodating groove, thereby limiting the transmission shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of an air conditioner provided in accordance with a first embodiment of the present invention;

[0026] Figure 2 A schematic cross-sectional view of an air conditioner according to a first embodiment of the present invention at a first viewing angle;

[0027] Figure 3 for Figure 2A partial enlarged schematic diagram of middle III;

[0028] Figure 4 A schematic cross-sectional view of the air conditioner provided by the first embodiment of the present invention at a second viewing angle;

[0029] Figure 5 A schematic diagram of the exploded structure of an air conditioner provided in a first embodiment of the present invention;

[0030] Figure 6 for Figure 1 Schematic diagram of the structure of the middle air guide plate;

[0031] Figure 7 for Figure 1 Schematic diagram of the assembly structure of the middle drive box and the transmission box;

[0032] Figure 8 for Figure 1 Schematic diagram of the exploded structure of the middle drive box and transmission box;

[0033] Figure 9 A schematic structural diagram of an air conditioner provided in accordance with a second embodiment of the present invention;

[0034] Figure 10 for Figure 9 Schematic diagram of the assembly structure of the middle drive box.

[0035] Description of reference numerals:

[0036] 100-air conditioner; 110-middle frame; 111-transmission opening; 113-accommodating groove; 115-panel; 117-mounting plate; 119-mounting slot; 130-drive box; 131-first box body; 133-drive gear; 135-motor; 137-mounting bracket; 150-air guide door; 151-air outlet; 170-transmission box; 171-second box body; 173-transmission gear; 175-transmission pin sleeve; 190-transmission shaft; 191-clearance; 193-transmission shaft; 1931-first half-axle sleeve; 1933-second half-axle sleeve; 210-base; 230-air guide plate. DETAILED DESCRIPTION

[0037] As disclosed in the background art, the prior art generally uses a drive bracket structure for driving the air guide door, that is, a bracket is provided on the air guide door, and the bracket extends from the air outlet into the middle frame and is connected to the motor, thereby realizing the driving of the air guide door, that is, the rotating shaft of the air guide door is usually located on the inner side of the middle frame. Furthermore, in order to improve the applicability of the air conditioner and prevent the bracket from affecting the air outlet effect, a structure in which the rotating shaft of the air guide door is exposed has emerged, that is, a structure in which the driving device extends outward to drive the rotation of the air guide door. The air guide door is provided on the outside of the middle frame, and the driving device directly drives the air guide door to rotate. However, when the driving device directly drives the structure, the air guide door is likely to interfere with the driving device when rotating, affecting the opening and closing angle of the air guide door. At the same time, a gap is likely to form at the connection between the rotating shaft of the air guide door and the driving device, thereby forming a black shadow. Combined with the exposure of the rotating shaft of the air guide door, a black shadow appears on the exterior surface of the entire air conditioner, thereby affecting the overall appearance.

[0038] To address the above-mentioned problems, the present invention provides an air conditioner and an air conditioner that can avoid interference when the air guide door rotates and avoid dark shadows on the appearance. To make the above-mentioned objects, features and advantages of the present invention more clearly understood, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0039] First embodiment

[0040] See also Figures 1 to 5 This embodiment provides an air conditioner 100, which reasonably sets the size relationship of each component so that there will be no interference when the air guide door 150 rotates, avoids the generation of black shadows at the connection, and improves the overall appearance.

[0041] The present embodiment provides an air conditioner 100, comprising a middle frame 110, a drive box 130, and an air guide door 150 disposed outside the middle frame 110. The middle frame 110 is provided with a transmission opening 111, and the end of the drive box 130 extends out of the transmission opening 111. A transmission box 170 is further provided at the end of the drive box 130. The transmission box 170 is transmission-connected to the drive box 130 and is respectively disposed on both sides of the transmission opening 111. A transmission shaft 170 is provided on one side edge of the air guide door 150. 90. A clearance gap 191 is opened on the transmission shaft 190. The transmission box 170 is located in the clearance gap 191 and is in transmission connection with the transmission shaft 190 for driving the transmission shaft 190 to rotate. The width of the transmission box 170 is greater than the width of the clearance gap 191 so that the transmission box 170 blocks the clearance gap 191. The width of the clearance gap 191 is greater than the width of the end of the drive box 130 to avoid interference with the end of the drive box 130 when the transmission shaft 190 rotates.

[0042] In this embodiment, the air conditioner 100 is suitable for a wall mounted air conditioner. The middle frame 110 is mounted on the base 210, and the drive box 130 is mounted inside the middle frame 110 and connected to the base 210. A transmission opening 111 is provided in the middle frame 110, so that the end of the drive box 130 extends out of the transmission opening 111 and is connected to the transmission shaft 190 of the air guide door 150 via a transmission box 170 disposed at the end. The transmission shaft 190 has a clearance notch 191, and the transmission box 170 is positioned within the clearance notch 191. The width of the transmission box 170 is greater than the width of the clearance notch 191, so that the transmission box 170 can cover the clearance notch 191, thereby avoiding the appearance of a gap and the appearance of a dark shadow. Furthermore, the width of the clearance notch 191 is greater than the end of the drive box 130, thereby preventing interference between the transmission shaft 190 and the end of the drive box 130 during rotation, thereby ensuring smooth movement of the air guide door 150.

[0043] It should be noted that, in this embodiment, the drive box 130 and the transmission box 170 are integrally arranged, an air outlet 151 is provided at the bottom of the middle frame 110, the transmission opening 111 is opened on the upper side of the air outlet 151, and the transmission shaft 190 of the air guide door 150 is located on the upper side of the air outlet 151. Driven by the transmission shaft 190, the air guide door 150 can close the air outlet 151 from top to bottom to complete the adjustment of the air outlet direction. Compared with the conventional air guide plate 230 located on the lower side of the air outlet 151, the air guide door 150 in this embodiment can achieve downward air outlet, and the air outlet range is wider, which is more conducive to the landing of hot air in the heating mode.

[0044] See also Figure 6 The transmission shaft 190 includes a transmission shaft barrel 193 and a transmission shaft core (not shown). The transmission shaft core is housed within the transmission shaft barrel 193, with a clearance notch 191 formed in the transmission shaft barrel 193, exposing the transmission shaft core. The transmission box 170 is in driving connection with the transmission shaft core. By providing the transmission shaft barrel 193 and the transmission core, the transmission shaft 190 can utilize a hollow structure to achieve power transmission, thereby achieving a weight reduction function.

[0045] In this embodiment, the transmission shaft 190 is cylindrical in structure, with a clearance notch 191 formed on and surrounding the transmission shaft barrel 193. The end of the drive box 130 is inserted into the clearance notch 191, and the transmission box 170 extends into the transmission shaft barrel 193. The end of the drive box 130 is connected to the transmission box 170, which is in turn in driving connection with the transmission shaft core disposed within the transmission shaft barrel 193, thereby achieving power transmission. Furthermore, the width of the transmission box 170 is greater than that of the drive box 130, and the width of the clearance notch 191 is greater than the width of the end of the drive box 130 and less than the width of the transmission box 170. This allows the transmission box 170 to be retained within the transmission shaft barrel 193 and block the clearance notch 191. This ensures that no gaps appear between the edges of the clearance notch 191 and the edges of the transmission box 170, thus avoiding the appearance of a dark shadow.

[0046] In this embodiment, there are two transmission openings 111, which are spaced apart on the middle frame 110 and disposed near the left and right ends of the air outlet 151. There are also two drive boxes 130, each of which is disposed inside the two transmission openings 111. Each drive box 130 is provided with a transmission box 170 at its end. Two clearance notches 191 are provided on the transmission shaft 190 near its ends, respectively. This allows the two transmission boxes 170 to be disposed inside the two clearance notches 191, respectively, to drive the transmission shaft 190 from both ends. Specifically, the two drive boxes 130 operate synchronously, and the transmission shaft 190 is driven to rotate synchronously by the two transmission boxes 170, achieving stable drive. Of course, a single drive box 130 can also be used to drive one end of the transmission shaft 190, with the other end of the transmission shaft 190 rotatably disposed on the middle frame 110, which can also achieve the same driving effect.

[0047] In this embodiment, the size of the transmission opening 111 should be larger than the size of the transmission box 170, and also larger than the size of the end of the drive box 130, so that the transmission box 170 can pass through the transmission opening 111 from the inside of the middle frame 110 to the outside of the middle frame 110, and at the same time, the end of the drive box 130 is inserted into the transmission opening 111.

[0048] It should be noted that in this embodiment, the width of the transmission box 170, the width of the end of the drive box 130, and the width of the clearance gap 191 all refer to the width along the axis of the transmission shaft 190. In this embodiment, the circumference of the transmission box 170 is an arc-shaped surface, and the size of the transmission box 170 is compatible with the size of the transmission shaft barrel 193, so that the transmission box 170 can be installed inside the transmission shaft barrel 193.

[0049] In this embodiment, the transmission shaft barrel 193 comprises a first half-sleeve 1931 and a second half-sleeve 1933. The transmission shaft core is disposed inside the first half-sleeve 1931. The second half-sleeve 1933 is clipped onto the first half-sleeve 1931 and covers the transmission shaft core. Specifically, the transmission shaft core is disposed in the middle of the first half-sleeve 1931. The transmission shaft barrel 193 is formed by snap-fitting the two half-sleeves together, facilitating the manufacture of the internal shaft core. Furthermore, the transmission shaft core, first half-sleeve 1931, and second half-sleeve 1933 can be formed separately, further reducing manufacturing complexity. Furthermore, the snap-fit ​​assembly method provides high assembly efficiency.

[0050] In this embodiment, the first half sleeve 1931 and the second half sleeve 1933 are clamped together as one piece, and the transmission shaft core can be fixed between the first half sleeve 1931 and the second half sleeve 1933 by clamping. Of course, in other preferred embodiments, the transmission shaft core can also be integrally molded with the first half sleeve 1931 to ensure a secure fixation effect.

[0051] Please continue to see Figure 1 In this embodiment, a receiving groove 113 is further provided on the outer side of the middle frame 110, and an air outlet 151 is further provided on the bottom side of the middle frame 110. The receiving groove 113 is located above the air outlet 151. The transmission opening 111 passes through the receiving groove 113. The end of the drive box 130 extends into the receiving groove 113. The transmission shaft 190 is rotatably received in the receiving groove 113. The air guide door 150 is used to open or close the air outlet 151 driven by the transmission shaft 190. By opening an accommodating groove 113 on the outer side of the middle frame 110 and accommodating the transmission shaft 190 in the accommodating groove 113, the protruding height of the transmission shaft 190 relative to the middle frame 110 can be reduced, thereby making the overall appearance of the air conditioner 100 more flush, and by setting the accommodating groove 113 on the upper side of the air outlet 151, the air guide door 150 can be closed or opened from top to bottom, thereby improving the adjustment range of the air guide door 150.

[0052] In this embodiment, a panel 115 is further provided on the outside of the middle frame 110. The panel 115 extends to the upper edge of the accommodating groove 113 and is loosely fitted with the transmission shaft 190. Preferably, the surface of the panel 115 is flush with the transmission shaft 190. The provision of the panel 115 improves the external appearance of the air conditioner 100. At the same time, the panel 115 extends to the upper edge of the accommodating groove 113 to limit the position of the transmission shaft 190.

[0053] In this embodiment, the accommodating groove 113 is in the shape of a semicircular groove, and its size matches the size of the transmission shaft 190. At the same time, by setting the panel 115 and making the transmission shaft 190 and the surface of the panel 115 remain flush, the appearance flatness of the air conditioner is improved.

[0054] See also Figure 7 and Figure 8 The drive box 130 includes a first box body 131 and a drive gear 133, and the transmission box 170 includes a second box body 171 and a transmission gear 173. The end of the first box body 131 extends out of the transmission opening 111 and is connected to the second box body 171. The drive gear 133 is arranged in the first box body 131, and the transmission gear 173 is arranged in the second box body 171. The drive gear 133 and the transmission gear 173 are meshed with each other, and the transmission gear 173 is connected to the transmission shaft 190 for transmission. The width of the second box body 171 is greater than the width of the clearance gap 191, and the width of the first box body 131 is less than the width of the clearance gap 191. The power transmission is achieved by the mutual engagement of the driving gear 133 and the transmission gear 173, which improves the stability of the power transmission. The arrangement of the first box body 131 and the second box body 171 can accommodate the driving gear 133 and the transmission gear 173. At the same time, the width of the first box body 131 is smaller than the width of the clearance gap 191, which can avoid interference between the first box body 131 and the transmission shaft 190. The width of the second box body 171 is larger than the width of the clearance gap 191, which can block the width of the clearance gap 191 and avoid the formation of a gap between the second box body 171 and the edge of the clearance gap 191 to cause a black shadow in appearance.

[0055] It should be noted that the first box body 131 and the second box body 171 are integrally formed and, by virtue of being covered from top to bottom, together define an inner cavity. The drive gear 133 and the transmission gear 173 are housed in this inner cavity in a meshing manner, with the drive gear 133 located within the first box body 131, and the transmission gear 173 located within the second box body 171. Furthermore, the width of the first box body 131 represents the width of the drive box 130, and the width of the first box body 131 is smaller than the width of the clearance notch 191, thereby enabling the clearance notch 191 to function as a clearance. The width of the second box body 171 is larger than the width of the clearance notch 191, thereby enabling the second box body 171 to obstruct the clearance notch 191.

[0056] In this embodiment, a motor 135 is further provided on the first housing 131. The motor 135 is located inside the middle frame 110. The output shaft of the motor 135 is connected to the drive gear 133 to rotate the drive gear 133. The motor 135 is mounted on the first housing 131, and the output shaft is directly connected to the drive gear 133, thereby providing power for the rotation of the transmission shaft 190. This facilitates installation and saves installation space for the motor 135.

[0057] In this embodiment, the drive gear 133 is a dual-gear structure, comprising a large and a small gear. The large gear is connected to the output shaft of the motor 135, and the small gear meshes between the large gear and the transmission gear 173. By adding the small gear, the distance between the motor 135 and the transmission gear 173 can be increased, allowing the motor 135 to be installed farther from the middle frame 110, thereby providing sufficient installation space for the motor 135. Of course, the drive gear 133 can also adopt a single gear structure, which can also achieve power transmission.

[0058] In this embodiment, a transmission pin sleeve 175 is provided on the transmission gear 173. The transmission pin sleeve 175 extends out of the second housing 171 and is connected to the transmission shaft 190. Specifically, the transmission pin sleeve 175 is in driving connection with the transmission mandrel. The transmission pin sleeve 175 has a hexagonal hole, and the end of the transmission mandrel is hexagonal and cylindrical, so that the transmission mandrel can be inserted into the transmission pin sleeve 175, thereby fixing the two together. The provision of the transmission pin sleeve 175 enables smooth power transmission between the transmission shaft 190 and the transmission gear 173. Of course, power transmission between the transmission gear 173 and the transmission mandrel can also be achieved through other transmission structures, which are not listed here.

[0059] Furthermore, the drive box 130 also includes a mounting bracket 137, which is disposed on an edge of the first box body 131. The mounting bracket 137 is provided with a mounting seat, which has a mounting hole, and a fixing member for fixing the mounting bracket 137 is assembled in the mounting hole. Specifically, the mounting hole is a screw hole, and the fixing member is a screw. The mounting bracket 137 is fixed to the base 210 by the screw. By providing the mounting bracket 137, the first box body 131 can be fixed, ensuring the stability of the first box body 131.

[0060] In summary, this embodiment provides an air conditioner 100. By providing a transmission opening 111 on the middle frame 110, the end of the drive box 130 extends out of the transmission opening 111 and is connected to the transmission shaft 190 of the air guide door 150 via a transmission box 170 disposed at the end. A clearance notch 191 is provided on the transmission shaft 190. The transmission box 170 is positioned within the clearance notch 191, and the width of the transmission box 170 is greater than the width of the clearance notch 191. This allows the transmission box 170 to obscure the clearance notch 191, thereby avoiding the appearance of a gap and the appearance of a dark shadow. Furthermore, the width of the clearance notch 191 is greater than the end of the drive box 130, thereby preventing interference between the transmission shaft 190 and the end of the drive box 130 during rotation, thereby ensuring smooth movement of the air guide door 150. The air conditioner 100 provided in this embodiment can avoid interference when the air guide door 150 rotates, ensuring the smooth movement of the air guide door 150, while avoiding the appearance of black shadows at the connection, thereby improving the appearance.

[0061] Second embodiment

[0062] See also Figure 9 and Figure 10 This embodiment provides an air conditioner 100, whose basic structure, principle and technical effects are the same as those of the first embodiment. For the sake of brief description, for parts not mentioned in this embodiment, please refer to the corresponding content in the first embodiment.

[0063] The air conditioner 100 provided in this embodiment includes a middle frame 110, a drive box 130 arranged on the middle frame 110, and an air guide door 150 arranged on the outside of the middle frame 110. A transmission opening 111 is opened on the middle frame 110, and the end of the drive box 130 extends out of the transmission opening 111. A transmission box 170 is further provided at the end of the drive box 130. The transmission box 170 is transmission-connected to the drive box 130 and is respectively arranged on both sides of the transmission opening 111. A transmission opening 111 is provided on one side edge of the air guide door 150. The driving shaft 190 has a clearance gap 191 formed on the driving shaft 190. The transmission box 170 is located in the clearance gap 191 and is connected to the transmission shaft 190 for driving the transmission shaft 190 to rotate. The width of the transmission box 170 is greater than the width of the clearance gap 191 so that the transmission box 170 blocks the clearance gap 191. The width of the clearance gap 191 is greater than the width of the end of the driving box 130 to avoid interference with the end of the driving box 130 when the driving shaft 190 rotates.

[0064] In this embodiment, a mounting plate 117 is integrally provided at the end of the middle frame 110 . A mounting groove 119 is provided on the mounting plate 117 . The drive box 130 is accommodated in the mounting groove 119 and extends out of the transmission opening 111 .

[0065] It should be noted that the outer side of the end of the middle frame 110 here refers to the side of the mounting plate 117 away from the center of the middle frame 110, that is, the outer surface of the mounting plate 117. During actual installation, a decorative plate or panel can also be set on the outer side of the mounting plate to shield the drive box 130.

[0066] 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 air conditioner, characterized in that: The invention comprises a middle frame (110), a drive box (130) and an air guide door (150) arranged outside the middle frame (110), wherein the middle frame (110) is provided with a transmission opening (111), and a transmission box (170) is further provided at the end of the drive box (130), wherein the transmission box (170) is connected to the drive box (130) in a transmission manner and is respectively arranged on both sides of the transmission opening (111), and a transmission transmission box (170) is provided on one side edge of the air guide door (150). The transmission shaft (190) is provided with a clearance notch (191), the transmission box (170) is located at the clearance notch (191) of the transmission shaft (190) and is in transmission connection with the transmission shaft (190) for driving the transmission shaft (190) to rotate, and the width of the transmission box (170) is greater than the width of the clearance notch (191), so that the transmission box (170) covers the clearance notch (191).

2. The air conditioner according to claim 1, characterized in that The width of the clearance gap (191) is greater than the width of the end of the drive box (130), so as to avoid interference between the transmission shaft (190) and the end of the drive box (130) when the transmission shaft (190) rotates.

3. The air conditioner according to claim 1, characterized in that The transmission shaft (190) comprises a transmission shaft cylinder (193) and a transmission shaft core. The transmission shaft core is accommodated in the transmission shaft cylinder (193), and the clearance notch (191) is provided on the transmission shaft cylinder (193). The transmission box (170) is in transmission connection with the transmission shaft core.

4. The air conditioner according to claim 3, characterized in that The transmission shaft cylinder (193) includes a first half-shaft sleeve (1931) and a second half-shaft sleeve (1933), the transmission shaft core is arranged on the inner side of the first half-shaft sleeve (1931), and the second half-shaft sleeve (1933) is clamped on the first half-shaft sleeve (1931) and covered on the transmission shaft core.

5. The air conditioner according to claim 1, characterized in that The driving box (130) includes a first box body (131) and a driving gear (133); the transmission box (170) includes a second box body (171) and a transmission gear (173); the end of the first box body (131) extends out of the transmission opening (111) and is connected to the second box body (171); the second box body (171) is arranged in the clearance gap (191); the driving gear (133) is arranged in the first box body (131); the transmission gear (173) is arranged in the second box body (171); the driving gear (133) and the transmission gear (173) are meshed with each other; the transmission gear (173) is transmission-connected to the transmission shaft (190); the width of the second box body (171) is greater than the width of the clearance gap (191); the width of the first box body (131) is less than the width of the clearance gap (191).

6. The air conditioner according to claim 5, characterized in that The first box body (131) is further provided with a motor (135), the motor (135) is located inside the middle frame (110), and the output shaft of the motor (135) is connected to the driving gear (133) to drive the driving gear (133) to rotate.

7. The air conditioner according to claim 5, characterized in that A transmission pin sleeve (175) is provided on the transmission gear (173). The transmission pin sleeve (175) extends out of the second box body (171) and is connected to the transmission shaft (190).

8. The air conditioner according to claim 5, characterized in that The drive box (130) further includes a mounting frame (137), the mounting frame (137) being arranged on the edge of the first box body (131), the mounting frame (137) being provided with a mounting seat, the mounting seat being provided with a mounting hole, and a fixing connecting piece for fixing the mounting frame (137) being assembled in the mounting hole.

9. The air conditioner according to claim 1, wherein: The outer side of the middle frame (110) is further provided with a receiving groove (113), and the bottom side of the middle frame (110) is further provided with an air outlet (151), the receiving groove (113) is located on the upper side of the air outlet (151), the transmission opening (111) passes through the receiving groove (113), the end of the drive box (130) extends into the receiving groove (113), the transmission shaft (190) is rotatably received in the receiving groove (113), and the air guide door (150) is used to open or close the air outlet (151) under the drive of the transmission shaft (190).

10. The air conditioner according to claim 9, characterized in that A panel (115) is further provided on the outer side of the middle frame (110), and the panel (115) extends to the upper edge of the accommodating groove (113) and is clearance-matched with the transmission shaft (190).

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