Air conditioner air bellow and automobile air conditioning system

Abstract

This utility model belongs to the field of air box technology, and discloses an air conditioning air box and an automotive air conditioning system. The air conditioning air box includes a box body and an air damper assembly. The box body has an external circulation air inlet and an internal circulation air inlet. The external circulation air inlet is positioned opposite the occupant and is located on the side of the box body away from the occupant along a first direction. The internal circulation air inlet is located on the side of the box body away from the air conditioning distribution box along a second direction. The first direction and the second direction are perpendicular. The air damper assembly includes a control damper and an anti-slip damper, which are independently rotatable and located in the air intake cavity. The control damper is used to control the opening and closing of the external circulation air inlet and the internal circulation air inlet. The anti-slip damper is used to separate the air intake path of the external circulation air inlet from the air intake path of the internal circulation air inlet. By staggering the internal and external circulation air inlets, the distance between the internal circulation air inlet and the occupant is increased, and the internal circulation air inlet is oriented away from the occupant, reducing noise when the internal circulation is activated and improving the occupant's driving experience.

Description

Technical Field

[0001] This utility model relates to the field of air box technology, and in particular to an air conditioning air box and an automotive air conditioning system. Background Technology

[0002] Currently, most mainstream air intake systems for automotive air conditioning can achieve basic functions of internal and external circulation. However, with the growing development of the new energy vehicle market, people's demands for air conditioning cooling and heating are becoming more refined, which makes the requirements for automotive air conditioning systems more stringent.

[0003] Currently, the external air vents for fresh air intake and the internal air vents for internal air intake are usually symmetrically arranged on both sides of the air box. Generally, the external air vent is located on the side of the air box away from the occupants, while the internal air vent is located on the side closer to the occupants. This results in the internal air vent being too close to the occupants, causing loud noise when the internal air is turned on, which seriously affects the occupants' driving experience.

[0004] Therefore, there is an urgent need for an air conditioning box and automotive air conditioning system to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide an air conditioning box and an automotive air conditioning system that have low noise and provide a good driving experience for passengers.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On one hand, an air conditioning air box is provided, which is connected to an air conditioning distribution box, and the air conditioning air box includes:

[0008] The enclosure has an air inlet chamber and an external circulation air vent and an internal circulation air vent that communicate with the air inlet chamber. The external circulation air vent is positioned opposite to the occupant and is located on the side of the enclosure away from the occupant along a first direction. The internal circulation air vent is located on the side of the enclosure away from the air conditioning distribution box along a second direction. The first direction is perpendicular to the second direction.

[0009] An air damper assembly includes a control damper and an anti-slip damper. Both the control damper and the anti-slip damper are rotatably disposed within the air inlet cavity, and their rotation axes coincide. The control damper is used to control the opening and closing of the external circulation air inlet and the internal circulation air inlet, and the anti-slip damper is used to separate the air inlet path of the external circulation air inlet from the air inlet path of the internal circulation air inlet.

[0010] Optionally, the damper assembly includes a transmission module, which includes a transmission shaft and a first transmission gear. One end of the transmission shaft is rotatably inserted into the housing. The anti-slip damper is connected to the portion of the transmission shaft located inside the housing and rotates with the rotation of the transmission shaft. The other end of the transmission shaft extends out of the housing, and the first transmission gear is connected to the portion of the transmission shaft extending out of the housing.

[0011] Optionally, the drive shaft includes a smooth rod portion and a connecting portion. The smooth rod portion is connected to the first drive gear plate, and the connecting portion is located on the side of the smooth rod portion away from the first drive gear plate. The connecting portion is provided with a first drive protrusion extending radially away from the rotation axis. The anti-wind-flow damper includes a connecting rod and a baffle plate connected to the connecting rod. The connecting rod is provided with a first connecting through hole, and a first drive groove is provided in the first connecting through hole to be inserted into the first drive protrusion.

[0012] Optionally, the connecting part is further provided with a snap-fit ​​protrusion on the side opposite to the optical rod part, and a snap-fit ​​groove is provided on the inner wall of the first connecting through hole to snap-fit ​​the snap-fit ​​protrusion.

[0013] Optionally, the transmission module further includes a second transmission gear plate, which is rotatably sleeved on the outside of the light rod portion and located below the first transmission gear plate. The control damper is rotatably sleeved on the outside of the transmission shaft and connected to the second transmission gear plate. The control damper rotates with the rotation of the second transmission gear plate.

[0014] Optionally, the control damper includes a first connecting sleeve, a second connecting sleeve, and a damper body. The first connecting sleeve and the second connecting sleeve are coaxial and spaced apart on both sides of the damper body along a third direction. The second transmission gear includes a plug-in portion and a gear portion. The first connecting sleeve is sleeved on the outside of the plug-in portion and located between the gear portion and the anti-slip damper. The second connecting sleeve is rotatably inserted into the housing. The anti-slip damper is located between the first connecting sleeve and the second connecting sleeve. The connecting rod has a plug-in protrusion on the side away from the gear portion, and the plug-in protrusion is inserted into the second connecting sleeve.

[0015] Optionally, the plug-in portion is provided with a second transmission protrusion extending radially away from the rotation axis, and the first connecting sleeve is provided with a second connecting through hole that plugs into the plug-in portion, and a second transmission groove that is opened on the inner wall of the second connecting through hole and plugs into the second transmission protrusion.

[0016] Optionally, the second connecting through hole is provided with a limiting protrusion extending radially toward the rotation axis, and the plug portion abuts against the limiting protrusion.

[0017] Optionally, the damper body includes a body portion and a sealing portion, the body portion being a fan-shaped hollow structure, and the sealing portion extending away from the body portion along the edge contours on both sides of the body portion.

[0018] On the other hand, an automotive air conditioning system is provided, the automotive air conditioning system including an air conditioning box as described in any of the preceding claims.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides an air conditioning air box, which includes a box body. The external circulation air vent of the box body is positioned opposite the occupant and located on the side of the box body away from the occupant along a first direction. The internal circulation air vent is located on the side of the box body away from the air conditioning distribution box along a second direction, and the second direction is perpendicular to the first direction. This staggered arrangement of the internal and external circulation air vents increases the distance between the internal circulation air vent and the occupant, thereby reducing noise when the internal circulation is activated and improving the occupant's driving experience. Furthermore, by setting independently rotatable control dampers and anti-spreading dampers in the air intake cavity of the air box, when the control dampers control the opening and closing of the external and internal circulation air vents, the anti-spreading dampers work in conjunction with the control dampers to isolate the air intake paths of the external and internal circulation air vents, preventing abnormal mixing between the air intake paths of the external and internal circulation air vents and ensuring that the air conditioning system accurately controls the in-vehicle environment and air quality.

[0021] This utility model also provides an automotive air conditioning system. By applying the aforementioned air conditioning box, the system reduces noise when the internal circulation is activated, thereby improving the passenger's driving experience. Furthermore, by preventing fresh air entering from the external circulation vent from directly flowing into the vehicle through the internal circulation vent, it minimizes the risk of airflow leakage between the external and internal circulation vents during high-speed vehicle operation, thus improving the stability and safety of the vehicle's air conditioning system. Attached Figure Description

[0022] Figure 1 This is a structural assembly drawing of the air conditioning fan box provided by this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the air conditioning box provided by this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the damper assembly in the air conditioning box provided by this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the control damper in the air conditioning box provided by this utility model;

[0026] Figure 5 This is a structural schematic diagram of the anti-airflow damper in the air conditioning box provided by this utility model from the top view.

[0027] Figure 6 This is a structural schematic diagram of the anti-airflow damper in the air conditioning box provided by this utility model from the bottom view.

[0028] Figure 7 This is a schematic diagram of the transmission module in the air conditioning fan box provided by this utility model;

[0029] Figure 8 This is a schematic diagram of the connection structure between the drive shaft and the first drive gear in the air conditioning box provided by this utility model;

[0030] Figure 9 This is a schematic diagram of the structure of the second transmission gear plate in the air conditioning box provided by this utility model.

[0031] In the picture:

[0032] 1. Housing; 11. External circulation air outlet; 12. Internal circulation air outlet; 13. Upper housing; 14. Lower housing; 15. Connecting notch;

[0033] 2. Damper assembly; 21. Control damper; 211. First connecting sleeve; 2111. Second connecting through hole; 2112. Second transmission groove; 2113. Limiting protrusion; 212. Second connecting sleeve; 213. Damper body; 2131. Body part; 2132. Sealing part; 22. Anti-wind-flow damper; 221. Connecting rod; 2211. First connecting through hole; 2212. First transmission groove; 2213. Snap-fit ​​groove; 2214. Insertion protrusion; 222. Baffle plate; 23. Transmission module; 231. Transmission shaft; 2311. Smooth rod part; 2312. Connecting part; 2313. First transmission protrusion; 2314. Snap-fit ​​protrusion; 232. First transmission gear; 233. Second transmission gear; 2331. Insertion part; 2332. Gear part; 2333. Second transmission protrusion. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] Currently, most mainstream air intake systems for automotive air conditioning can achieve basic functions of internal and external circulation. However, with the growing development of the new energy vehicle market, people's demands for air conditioning cooling and heating are becoming more refined, which makes the requirements for automotive air conditioning systems more stringent.

[0039] Currently, the external air vents for fresh air intake and the internal air vents for internal air intake are usually symmetrically arranged on both sides of the air box. Generally, the external air vent is located on the side of the air box away from the occupants, while the internal air vent is located on the side closer to the occupants. This results in the internal air vent being too close to the occupants, causing loud noise when the internal air is turned on, which seriously affects the occupants' driving experience.

[0040] Therefore, in order to reduce noise when the internal air circulation is turned on and improve the passenger's driving experience, this embodiment provides an air conditioning air box, which is connected to the air conditioning distribution box. For ease of description, the path of fresh air entering the air conditioning air box is defined as the first direction, the path of internal air entering the air conditioning air box is defined as the second direction, and the height direction of the air conditioning air box is defined as the third direction.

[0041] like Figures 1 to 9 As shown, the air conditioning unit includes a housing 1 and a damper assembly 2. The housing 1 has an air inlet chamber. The housing 1 also has an external circulation air outlet 11 and an internal circulation air outlet 12 that communicate with the air inlet chamber. The external circulation air outlet 11 is positioned opposite to the occupants and is located on the side of the housing 1 away from the occupants along a first direction. The internal circulation air outlet 12 is located on the side of the housing 1 away from the air conditioning distribution box along a second direction. The first direction and the second direction are perpendicular. The damper assembly 2 includes a control damper 21 and an anti-slip damper 22. Both the control damper 21 and the anti-slip damper 22 can be independently rotated within the air inlet chamber. The rotation axes of the control damper 21 and the anti-slip damper 22 coincide. The control damper 21 is used to control the opening and closing of the external circulation air outlet 11 and the internal circulation air outlet 12. The anti-slip damper 22 is used to separate the air inlet path of the external circulation air outlet 11 from the air inlet path of the internal circulation air outlet 12.

[0042] The internal circulation vent 12 is located on the side of the housing 1 away from the air conditioning distribution box along the second direction, and the second direction is perpendicular to the first direction. This allows the internal circulation vent 12 and the external circulation vent 11 to be staggered, increasing the distance between the internal circulation vent 12 and the occupants, thereby reducing noise when the internal circulation is turned on and improving the occupants' driving experience. Furthermore, by setting an independently rotatable control damper 21 and an anti-slip damper 22 in the air intake cavity of the air box, when the control damper 21 controls the opening and closing of the external circulation vent 11 and the internal circulation vent 12, the anti-slip damper 22 works in conjunction with the control damper 21 to isolate the air intake paths of the external circulation vent 11 and the internal circulation vent 12, preventing abnormal mixing between the air intake paths of the external circulation vent 11 and the internal circulation vent 12, and ensuring that the air conditioning system accurately controls the in-vehicle environment and air quality.

[0043] Optionally, such as Figure 1 , Figure 3 , Figure 7As shown, the damper assembly 2 includes a transmission module 23, which includes a transmission shaft 231 and a first transmission gear 232. One end of the transmission shaft 231 is rotatably inserted into the housing 1. The anti-slip damper 22 is connected to the portion of the transmission shaft 231 located inside the housing 1 and rotates with the rotation of the transmission shaft 231. The other end of the transmission shaft 231 extends out of the housing 1, and the first transmission gear 232 is connected to the portion of the transmission shaft 231 extending out of the housing 1. By setting the first transmission gear 232 on the transmission shaft 231, the rotation of the transmission shaft 231 is achieved through gear transmission, thereby realizing the rotational movement of the anti-slip damper 22.

[0044] In this embodiment, the first transmission gear 232 and the transmission shaft 231 are integral structures formed by an integral molding process, thereby reducing the number of parts that need to be assembled and improving assembly efficiency.

[0045] Optionally, such as Figure 5 , Figure 8 As shown, the drive shaft 231 includes a smooth rod portion 2311 and a connecting portion 2312. The smooth rod portion 2311 is connected to the first drive gear plate 232. The connecting portion 2312 is located on the side of the smooth rod portion 2311 away from the first drive gear plate 232. The connecting portion 2312 is provided with a first drive protrusion 2313 extending radially away from the axis of rotation. The anti-wind-flow damper 22 includes a connecting rod 221 and a baffle plate 222 connected to the connecting rod 221. The connecting rod 221 is provided with a first connecting through hole 2211. The first connecting through hole 2211 is provided with a first drive groove 2212 that is inserted into the first drive protrusion 2313. By providing a first transmission protrusion 2313 on the connecting part 2312 and a first transmission groove 2212 in the first connecting through hole 2211 of the connecting rod 221, when the transmission shaft 231 is inserted into the first connecting through hole 2211 on the connecting rod 221, the first transmission protrusion 2313 and the first transmission groove 2212 are inserted into each other, thereby using the first transmission protrusion 2313 to transmit the torque of the transmission shaft 231 to the anti-airflow damper 22, so that the anti-airflow damper 22 can rotate with the rotation of the transmission shaft 231.

[0046] In this embodiment, the number of first transmission grooves 2212 corresponds one-to-one with the number of first transmission protrusions 2313, and the number of first transmission protrusions 2313 on the connecting part 2312 can be freely set according to requirements. In this embodiment, the connecting part 2312 is provided with two first transmission protrusions 2313 symmetrically distributed along the rotation axis, and the included angle between the two first transmission protrusions 2313 is 180°.

[0047] Optionally, such as Figure 5 , Figure 8As shown, the connecting part 2312 is provided with a snap-fit ​​protrusion 2314 on the side opposite to the guide rod part 2311, and a snap-fit ​​groove 2213 is provided on the inner wall of the first connecting through hole 2211 to snap-fit ​​the snap-fit ​​protrusion 2314. By providing a snap-fit ​​protrusion 2314 on the connecting part 2312 and a snap-fit ​​groove 2213 on the inner wall of the first connecting through hole 2211, when the connecting part 2312 is inserted into the first connecting through hole 2211, the snap-fit ​​protrusion 2314 and the snap-fit ​​groove 2213 are engaged to achieve axial positioning of the drive shaft 231 and the anti-airflow damper 22.

[0048] Optionally, such as Figure 3 , Figure 8 , Figure 9 As shown, the transmission module 23 also includes a second transmission gear 233, which is rotatably fitted onto the outside of the guide rod portion 2311 and located below the first transmission gear 232. A control damper 21 is rotatably fitted onto the outside of the transmission shaft 231 and connected to the second transmission gear 233. The control damper 21 rotates with the rotation of the second transmission gear 233. By rotatably fitting the second transmission gear 233 onto the outside of the guide rod portion 2311 of the transmission shaft 231, the second transmission gear 233 is coaxial with the first transmission gear 232 and can rotate independently.

[0049] Optionally, such as Figure 3 , Figure 4 , Figure 9 As shown, the control damper 21 includes a first connecting sleeve 211, a second connecting sleeve 212, and a damper body 213. The first connecting sleeve 211 and the second connecting sleeve 212 are coaxial and spaced apart on both sides of the damper body 213 along a third direction. The second transmission gear 233 includes a plug-in part 2331 and a gear part 2332. The first connecting sleeve 211 is sleeved on the outside of the plug-in part 2331 and is located between the gear part 2332 and the anti-airflow damper 22. The second connecting sleeve 212 is rotatably inserted into the housing 1. The anti-airflow damper 22 is located between the first connecting sleeve 211 and the second connecting sleeve 212. The connecting rod 221 has a plug-in protrusion 2214 on the side away from the gear part 2332. The plug-in protrusion 2214 is inserted into the second connecting sleeve 212. By controlling the first connecting sleeve 211 of the damper 21 to cooperate with the first transmission gear 232, the second transmission gear 233 is limited. By controlling the first connecting sleeve 211 and the second connecting sleeve 212 to cooperate with each other, the anti-slip damper 22 is limited.

[0050] Optionally, such as Figure 4 , Figure 9As shown, the insertion part 2331 is provided with a second transmission protrusion 2333 extending radially away from the rotation axis. The first connecting sleeve 211 has a second connecting through hole 2111 that inserts into the insertion part 2331, and a second transmission groove 2112 formed on the inner wall of the second connecting through hole 2111 that inserts into the second transmission protrusion 2333. By providing the second transmission protrusion 2333 on the insertion part 2331 and forming the second transmission groove 2112 on the inner wall of the second connecting through hole 2111, the second transmission gear 233 transmits torque to the control damper 21 through the insertion of the second transmission protrusion 2333 and the second transmission groove 2112, so that the control damper 21 rotates with the rotation of the second transmission gear 233.

[0051] In this embodiment, the number of second transmission grooves 2112 corresponds one-to-one with the number of second transmission protrusions 2333, and the number of second transmission protrusions 2333 on the insertion part 2331 can be freely set according to requirements. In this embodiment, the insertion part 2331 is provided with three second transmission protrusions 2333 symmetrically distributed along the rotation axis, and the included angle between two adjacent second transmission protrusions 2333 is 120°.

[0052] Optionally, such as Figure 4 , Figure 9 As shown, a limiting protrusion 2113 extending radially towards the axis of rotation is provided in the second connecting through hole 2111, and the insertion part 2331 abuts against the limiting protrusion 2113. By providing the limiting protrusion 2113 in the second connecting through hole 2111, one end of the second transmission gear 233 abuts against the limiting protrusion 2113 in the third direction, and the other end of the second transmission gear 233 abuts against the first transmission gear 232 in the third direction, thereby preventing the second transmission gear 233 from shifting axially.

[0053] Optionally, such as Figure 4 As shown, the damper body 213 includes a body portion 2131 and a sealing portion 2132. The body portion 2131 is a fan-shaped hollow structure, and the sealing portion 2132 extends away from the body portion 2131 along the edge contours on both sides of the body portion 2131. By providing the sealing portion 2132 on the damper body 213, the damper body 213 can cooperate with the internal structure of the air inlet cavity of the housing 1 to achieve airtightness when controlling the closure of the external circulation damper and the internal circulation damper.

[0054] In this embodiment, as Figure 2As shown, the housing 1 includes an upper housing 13 and a lower housing 14. When the upper housing 13 and the lower housing 14 are closed, they form a wind box with an air intake chamber. The air intake chamber is also provided with a docking notch 15 that connects with the sealing part 2132. Both sides of the external circulation air outlet 11 and the internal circulation air outlet 12 are provided with docking notches 15. When the control damper 21 completely closes the external circulation air outlet 11 or the internal circulation air outlet 12, the sealing part 2132 connects with the docking notch 15 to achieve closure.

[0055] In this embodiment, an automotive air conditioning system is also provided, which includes the aforementioned air conditioning air box. By utilizing the air conditioning air box, this automotive air conditioning system improves the passenger's driving experience by reducing noise when the internal circulation is activated. Furthermore, by preventing fresh air entering from the external circulation vent 11 from directly flowing into the vehicle through the internal circulation vent 12, it minimizes the risk of airflow leakage between the external circulation vent 11 and the internal circulation vent 12 during high-speed vehicle operation, thereby improving the stability and safety of the vehicle's air conditioning system.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An air conditioning air box, characterized by, The air conditioning air box is connected to the air conditioning distribution box, and the air conditioning air box includes: The box (1) has an air inlet cavity inside. The box (1) also has an external circulation air inlet (11) and an internal circulation air inlet (12) that communicate with the air inlet cavity. The external circulation air inlet (11) is arranged opposite to the occupant and is located on the side of the box (1) away from the occupant along a first direction. The internal circulation air inlet (12) is located on the side of the box (1) away from the air conditioning distribution box along a second direction. The first direction is perpendicular to the second direction. The damper assembly (2) includes a control damper (21) and an anti-slip damper (22). Both the control damper (21) and the anti-slip damper (22) are rotatably disposed in the air inlet cavity, and the rotation axes of the control damper (21) and the anti-slip damper (22) coincide. The control damper (21) is used to control the opening and closing of the external circulation air inlet (11) and the internal circulation air inlet (12). The anti-slip damper (22) is used to separate the air inlet path of the external circulation air inlet (11) from the air inlet path of the internal circulation air inlet (12).

2. The air conditioner bellows according to claim 1, wherein, The damper assembly (2) includes a transmission module (23), which includes a transmission shaft (231) and a first transmission gear (232). One end of the transmission shaft (231) is rotatably inserted into the housing (1). The anti-slip damper (22) is connected to the portion of the transmission shaft (231) located inside the housing (1) and rotates with the rotation of the transmission shaft (231). The other end of the transmission shaft (231) extends out of the housing (1), and the first transmission gear (232) is connected to the portion of the transmission shaft (231) extending out of the housing (1).

3. The air conditioner bellows according to claim 2, wherein, The drive shaft (231) includes a smooth rod portion (2311) and a connecting portion (2312). The smooth rod portion (2311) is connected to the first drive gear plate (232). The connecting portion (2312) is located on the side of the smooth rod portion (2311) away from the first drive gear plate (232). The connecting portion (2312) is provided with a first drive protrusion (2313) extending radially away from the rotation axis. The anti-wind-flow damper (22) includes a connecting rod (221) and a baffle plate (222) connected to the connecting rod (221). The connecting rod (221) is provided with a first connecting through hole (2211). The first connecting through hole (2211) is provided with a first drive groove (2212) that is inserted into the first drive protrusion (2313).

4. The air conditioner bellows according to claim 3, wherein The connecting part (2312) is provided with a snap-fit ​​protrusion (2314) on the side opposite to the light rod part (2311), and a snap-fit ​​groove (2213) is provided on the inner wall of the first connecting through hole (2211) to snap-fit ​​the snap-fit ​​protrusion (2314).

5. The air conditioning fan box according to claim 3, characterized in that, The transmission module (23) further includes a second transmission gear (233), which is rotatably sleeved on the outside of the light rod portion (2311) and located below the first transmission gear (232). The control damper (21) is rotatably sleeved on the outside of the transmission shaft (231) and connected to the second transmission gear (233). The control damper (21) rotates with the rotation of the second transmission gear (233).

6. The air conditioning fan box according to claim 5, characterized in that, The control damper (21) includes a first connecting sleeve (211), a second connecting sleeve (212), and a damper body (213). The first connecting sleeve (211) and the second connecting sleeve (212) are coaxial and spaced apart on both sides of the damper body (213) along a third direction. The second transmission gear (233) includes a plug-in portion (2331) and a gear portion (2332). The first connecting sleeve (211) is sleeved on the outside of the plug-in portion (2331) and positioned... Between the gear plate portion (2332) and the anti-slip damper (22), the second connecting sleeve (212) is rotatably inserted into the housing (1). The anti-slip damper (22) is located between the first connecting sleeve (211) and the second connecting sleeve (212). The connecting rod (221) has an insertion protrusion (2214) on the side away from the gear plate portion (2332). The insertion protrusion (2214) is inserted into the second connecting sleeve (212).

7. The air conditioning fan box according to claim 6, characterized in that, The insertion part (2331) is provided with a second transmission protrusion (2333) extending radially away from the rotation axis. The first connecting sleeve (211) is provided with a second connecting through hole (2111) that is inserted into the insertion part (2331) and a second transmission groove (2112) that is opened on the inner wall of the second connecting through hole (2111) and is inserted into the second transmission protrusion (2333).

8. The air conditioning fan box according to claim 7, characterized in that, The second connecting through hole (2111) is provided with a limiting protrusion (2113) extending radially close to the rotation axis, and the plug part (2331) abuts against the limiting protrusion (2113).

9. The air conditioning fan box according to claim 6, characterized in that, The damper body (213) includes a body part (2131) and a sealing part (2132). The body part (2131) is a fan-shaped hollow structure, and the sealing part (2132) extends away from the body part (2131) along the edge contours on both sides of the body part (2131).

10. An automotive air conditioning system, characterized in that, The automotive air conditioning system includes an air conditioning fan box as described in any one of claims 1-9.

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