Air conditioner air door adjusting structure

Abstract

The utility model discloses an air conditioner air door adjusting structure, and belongs to the technical field of automobile air conditioners. The device comprises a shell and an air door plate arranged in the shell, wherein a transmission rack is arranged on the air door plate; the air door plate is further connected with a transmission mechanism, the transmission mechanism comprises a transmission shaft and a driving source, and a transmission gear is arranged on the transmission shaft. The transmission gear comprises a gear part and a first mounting part; wherein the gear part is used for being in meshing transmission with a transmission rack; the first mounting part is used for being assembled in a mounting hole in a shell; and a first step surface and an elastic buckle are formed on the first mounting part. According to the utility model, traditional connecting rod transmission is replaced by gear meshing transmission, so that not only is the assembly space saved, but also the transmission stability is improved. And meanwhile, the axial movement of the movable gear is limited through the first step surface and the elastic buckle, so that the stability of the transmission gear in the working process is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of automotive air conditioning technology, and more specifically, relates to an air conditioning damper adjustment structure. Background Technology

[0002] As a crucial component of automotive comfort features, the transmission control of the damper panel in the air duct system of automotive air conditioning is of paramount importance. Traditional damper panel transmission methods have shortcomings in terms of space utilization and transmission smoothness. Therefore, there is an urgent need for an automotive air conditioning damper panel transmission device that offers smooth transmission and saves space.

[0003] A search revealed a novel multi-link motion mechanism for automotive air conditioning systems in patent CN217455592U. This application includes a distributor housing, with a central blowing mechanism mounted at the front center and a central defrosting mechanism mounted at the rear center of the housing, both driven by an external actuator I. A side blowing mechanism, a side blowing foot mechanism, and a side defrosting mechanism located inside the distributor housing are all driven by an external actuator II. This allows for the rotation of multiple dampers using only two actuators at a certain angle, thus enabling various airflow modes.

[0004] For example, patent CN210478356U discloses a moving mechanism for an automotive air conditioning damper. This application includes a left airflow damper for blowing air onto the face and feet, connecting rod I, a right airflow damper for blowing air onto the face and feet, connecting rod II, a defrost damper, an airflow damper for blowing air onto the face, a rotating shaft gear, an actuator gear, and an actuator. The left airflow damper for blowing air onto the face and feet, the right airflow damper for blowing air onto the face, and the defrost damper are all controlled by one of the actuators. Through the mutual transmission between the moving mechanisms, multiple blowing modes can be achieved.

[0005] While the aforementioned applications enable a single actuator to control multiple dampers, thus achieving various airflow modes, the transmission structures all utilize linkage drives, which occupy a significant amount of space. In the limited interior space of a car, this hinders the efficient arrangement of other components. Furthermore, linkage drives are prone to issues such as unstable transmission and abnormal noises during long-term use, affecting the performance of the car's air conditioning and the user experience. Utility Model Content

[0006] 1. The problem to be solved

[0007] In view of at least some of the problems existing in the prior art, this utility model proposes an air conditioning damper adjustment structure, the purpose of which is to solve the problems of large space occupation and unstable transmission in the existing linkage transmission structure.

[0008] 2. Technical Solution

[0009] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0010] This utility model discloses an air conditioning damper adjustment structure, including a housing, a first accommodating chamber and a second accommodating chamber located on both sides of the first accommodating chamber, a damper plate being provided in the second accommodating chamber, and a transmission rack being provided on the damper plate.

[0011] The damper plate is also connected to a transmission mechanism, which includes a transmission shaft and a drive source for driving the transmission shaft to rotate. The transmission shaft is provided with a transmission gear.

[0012] The transmission gear includes a gear portion and a first mounting portion; wherein, the gear portion is used to mesh with a transmission rack; and the first mounting portion is used to be assembled into a mounting hole on the housing.

[0013] The first mounting portion has a first stepped surface and is provided with an elastic buckle; after the first mounting portion is assembled into the mounting hole, the first stepped surface and the limiting block on the elastic buckle are respectively located on both sides of the mounting hole, which are used to limit the axial movement of the transmission gear.

[0014] In some embodiments, the input end of the drive source is connected to a drive gear, which is connected to a transmission gear via an intermediate gear.

[0015] In some embodiments, the transmission gear connected to the intermediate gear further includes a second mounting portion disposed at the end of the first mounting portion; the second mounting portion is provided with an elastic buckle and a guide block; the inner wall of the intermediate gear is formed with a guide groove and a snap-fit ​​groove; wherein...

[0016] The guide groove is used for the guide block to be inserted; the snap-fit ​​groove is used for the elastic buckle to be inserted, and a second stepped surface that cooperates with the limiting block is formed on the snap-fit ​​groove.

[0017] In some embodiments, the snap-fit ​​groove includes a guide section and an extension section; wherein the guide section is inclined, and the second stepped surface is formed at the junction of the guide section and the extension section.

[0018] In some embodiments, the drive shaft is a polygonal shaft, and the drive gear has a mounting hole for the drive shaft to pass through, the mounting hole being a polygonal hole adapted to the drive shaft.

[0019] In some embodiments, the driving source is a motor, and the driving gear is an incomplete gear.

[0020] In some embodiments, the housing is assembled from a main housing, an upper housing, a left housing, and a right housing; wherein the first accommodating chamber is enclosed by the main housing and the upper housing; and the second accommodating chamber is enclosed by the main housing, the upper housing, and either the left housing or the right housing.

[0021] In some embodiments, the damper plate is an arc-shaped plate, and the damper plate is provided with sliding blocks on at least both sides at the beginning and end; the opposite side walls of the second receiving chamber are provided with sliding grooves for the sliding blocks to be inserted; wherein the sliding groove is formed by two arc-shaped protrusions.

[0022] In some embodiments, the damper plate is provided with two transmission racks, each transmission rack being equipped with a transmission gear; the corresponding side walls of the left housing, right housing, and main housing are all provided with mounting holes for the transmission gears to be engaged.

[0023] In some embodiments, the drive source and drive gear are disposed on the outer side wall of the right housing.

[0024] 3. Beneficial effects

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0026] (1) The present invention provides an air conditioning damper adjustment structure in which the damper plate engages with the transmission mechanism via a transmission rack. Compared with the traditional linkage transmission, this structure saves assembly space, facilitating the installation and arrangement of other components, and improves transmission stability. Simultaneously, a limiting block and a first stepped surface are formed on the first mounting portion of the transmission gear, which can be used to limit the axial movement of the transmission gear to ensure its stability during operation.

[0027] (2) In the air conditioning damper adjustment structure of this utility model, the intermediate gear and the transmission gear are connected by the guide block and the guide groove, as well as the elastic buckle and the snap-fit ​​groove, which can effectively ensure the stability of the connection between the two, thereby helping to ensure the smoothness of the transmission process.

[0028] (3) The air conditioning damper adjustment structure of this utility model has a sliding groove in the housing for the damper plate to move, which is beneficial to the smoothness of the damper plate sliding. At the same time, designing the damper plate as an arc structure can effectively reduce the height of the second accommodating chamber in the vertical direction, which is also beneficial to saving assembly space. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of an air conditioning damper adjustment structure according to the present invention;

[0030] Figure 2 This is an exploded view of the shell in this utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the left shell in this utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the windproof door panel of this utility model;

[0033] Figure 5 A schematic diagram of the cooperation between the transmission mechanism and the damper plate in this utility model;

[0034] Figure 6 for Figure 5 A magnified view of a portion of point A in the middle;

[0035] Figure 7 A schematic diagram of the structure of the first transmission gear in this utility model;

[0036] Figure 8 This utility model includes an assembly diagram of the first transmission gear and the mounting hole.

[0037] Figure 9 A schematic diagram of the structure of the second transmission gear in this utility model;

[0038] Figure 10 A schematic diagram of the structure of the intermediate gear in this utility model;

[0039] Figure 11 This utility model provides an assembly diagram of the second transmission gear and the intermediate gear.

[0040] In the diagram: 100, housing; 110, main housing; 120, upper housing; 130, left housing; 140, right housing; 150, first receiving chamber; 160, second receiving chamber; 170, mounting hole; 180, sliding groove;

[0041] 200. Damper plate; 210. Transmission rack; 220. Sliding block;

[0042] 300. Transmission mechanism; 310. Drive source; 320. Drive shaft; 330. Drive gear;

[0043] 340. Intermediate gear; 341. Guide groove; 342. Snap-fit ​​groove; 3421. Guide section; 3422. Extension section; 343. Second step surface;

[0044] 350. Transmission gear; 351. Gear part; 352. First mounting part; 3521. First stepped surface; 353. Elastic buckle; 3531. Limiting block; 354. Second mounting part; 355. Guide block; 356. Assembly hole. Detailed Implementation

[0045] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] The present invention will be further described below with reference to specific embodiments.

[0048] like Figure 1 As shown, an air conditioning damper adjustment structure of this embodiment includes a housing 100, within which a first receiving chamber 150 and second receiving chambers 160 located on both sides of the first receiving chamber 150 are formed. The first receiving chamber 150 is used to house a fan (not shown in the figure), and the second receiving chamber 160 houses a damper plate 200. The damper plate 200 is connected to a transmission mechanism 300 via a transmission rack 210. The transmission mechanism 300 drives the damper plate 200 to move through meshing transmission, thereby switching between internal and external air circulation ducts.

[0049] Compared to the traditional linkage transmission structure, this embodiment adopts a gear meshing transmission structure, which on the one hand helps to save assembly space, so as to facilitate the installation and arrangement of other components; on the other hand, it can improve the stability of transmission.

[0050] Specifically, such as Figure 2 As shown, the shell 100 is assembled from a main shell 110, an upper shell 120, a left shell 130, and a right shell 140. The specific assembly structure is existing technology and will not be described in detail here. The main shell 110 is a semi-enclosed structure formed by a rear wall, a bottom, and two side walls. The left shell 130 and right shell 140 are both L-shaped structures formed by a side wall and a bottom wall. Thus, the area enclosed between the main shell 110 and the upper shell 120 is the aforementioned first receiving chamber 150; while the area enclosed by the main shell 110, upper shell 120, and left shell 130, or the main shell 110, upper shell 120, and right shell 140, is the aforementioned second receiving chamber 160. It is worth noting that "upper," "lower," "left," and "right" here refer to... Figure 2 The orientation of the paper should be taken into account.

[0051] like Figure 3 , Figure 4As shown, in some embodiments, the damper plate 200 has sliding blocks 220 on at least both ends. Simultaneously, sliding grooves 180 for the sliding blocks 220 to engage are provided on the opposite side walls of the second receiving chamber 160. That is, sliding grooves 180 are provided on the side walls of the main housing 110, left housing 130, and right housing 140. Furthermore, a transmission rack 210 is provided on each side of the damper plate 200. In this embodiment, the cooperation between the sliding blocks 220 and the sliding grooves 180, along with the double rack transmission design, helps to ensure the smooth sliding of the damper plate 200.

[0052] Preferably, the sliding groove 180 is formed by two arc-shaped protrusions. This design allows the protrusions to not only form the sliding groove 180 but also act as reinforcing ribs, thereby increasing the strength of the housing.

[0053] In some embodiments, the damper plate 200 is an overall curved plate. The curved design can effectively reduce the vertical height of the second receiving chamber 160, which also helps to save assembly space. However, it should be noted that since the damper plate 200 is curved and has a certain length, if the sliding block 220 is only provided near the end of the damper plate 200, it is not conducive to the smooth sliding of the damper plate 200, and may even cause jamming. Therefore, multiple sliding blocks 220 can be added to both sides of the damper plate 200 to ensure the smooth sliding of the curved damper plate 200.

[0054] Specifically, in this embodiment, in addition to the sliding blocks 220 at both ends of the damper plate 200, there are also 4 sliding blocks 220 evenly distributed in the middle part of the damper plate 200.

[0055] refer to Figure 5 , Figure 6 As shown, in one embodiment of the transmission mechanism 300, the transmission mechanism 300 includes a drive source 310, a drive shaft 320, a drive gear 330, an intermediate gear 340, and a transmission gear 350. The output end of the drive source 310 is connected to the drive gear 330. A plurality of transmission gears 350 are mounted on the drive shaft 320, the number of which corresponds one-to-one with the number of the transmission racks 210. The drive gears 330 and the transmission gears 350 are connected via the intermediate gear 340.

[0056] For ease of description below, the transmission gear 350 connected to the intermediate gear 340 is defined as the second transmission gear; other transmission gears 350 not connected to the intermediate gear 340 are defined as the first transmission gear. The first transmission gear is used only for meshing with the corresponding transmission rack 210; while the second transmission gear is used both to connect with the intermediate gear 340 and to mesh with the corresponding transmission rack 210.

[0057] like Figure 7 , Figure 8 As shown, the first transmission gear includes a gear portion 351 and a first mounting portion 352. The gear portion 351 is used to mesh with the transmission rack 210 for transmission; while the first mounting portion 352 is used to be mounted in the mounting hole 170 on the housing 100.

[0058] In some embodiments, the drive shaft 320 is a polygonal shaft. The drive gear 350 has a mounting hole 356 through which the drive shaft 320 passes; this mounting hole 356 is a polygonal hole that mates with the drive shaft 320. In this embodiment, the transmission between the drive shaft 320 and the drive gear 350 is achieved through the fit between the drive shaft 320 and the mounting hole 356. Simultaneously, the planar fit between the drive shaft 320 and the mounting hole 356 effectively prevents circumferential relative movement between the drive shaft 320 and the drive gear 350, ensuring transmission stability.

[0059] Meanwhile, a first stepped surface 3521 is formed on the first mounting portion 352, and an elastic buckle 353 is provided in the groove on the first mounting portion 352. After the first mounting portion 352 is assembled into the mounting hole 170, the limiting block 3531 on the first stepped surface 3521 and the elastic buckle 353 are respectively located on both sides of the hole wall of the mounting hole 170, which are used to limit the axial movement of the transmission gear 350.

[0060] like Figure 9 , Figure 10 , Figure 11 As shown, the structure of the second transmission gear is basically the same as that of the first transmission gear; the difference is that, based on the first transmission gear, a second mounting portion 354 for connecting the intermediate gear 340 is also provided. Specifically, the second transmission gear also includes a second mounting portion 354 disposed at the end of the first mounting portion 352. The outer peripheral wall of the second mounting portion 354 is provided with an elastic buckle 353 and a guide block 355. A guide groove 341 and a locking groove 342 are formed on the inner wall of the intermediate gear 340. The guide groove 341 is used for the guide block 355 to engage. The provision of the guide groove 341 not only facilitates the engagement of the guide block 355, but also, by utilizing the mutual engagement between the guide groove 341 and the guide block 355, effectively restricts the relative movement of the intermediate gear 340 and the second transmission gear in the circumferential direction, ensuring the stability of the transmission between them. The snap-fit ​​groove 342 is used for the elastic buckle 353 to snap into, and the snap-fit ​​groove 342 has a second stepped surface 343 that cooperates with the limiting block 3531 to limit the axial movement of the intermediate gear 340.

[0061] In some embodiments, the snap-fit ​​groove 342 includes a guide section 3421 and an extension section 3422. The guide section 3421 is inclined to guide the engagement of the elastic snap-fit ​​353. Simultaneously, the aforementioned second stepped surface 343 is formed at the junction of the guide section 3421 and the extension section 3422. It should be noted that the guide section 3421 may be inclined entirely, or only partially inclined near the extension section 3422.

[0062] Specifically, in this embodiment, the drive source 310 can be a motor, which is fixed to the outside of the right housing 140. The drive gear 330 is an incomplete gear, which can further save assembly space. Both the incomplete gear and the intermediate gear 340 are located on the outside of the right housing 140. At the same time, mounting holes 170 for the transmission gear 350 to be engaged are provided on the corresponding side walls of the left housing 130, the right housing 140, and the main housing 110.

[0063] This embodiment presents an air conditioning damper adjustment structure, in which the damper plate 200 is driven by a gear meshing structure. Compared to the traditional linkage transmission structure, it occupies less internal space in the automotive air conditioning system while achieving the same function, providing more space for the rational layout of other components and improving the overall integration and compactness of the automotive air conditioning system. Simultaneously, the close meshing of the gear teeth ensures uniform power transmission, effectively reducing impact and vibration during transmission, resulting in smoother opening and closing of the internal and external circulation dampers, reducing abnormal noises caused by uneven transmission, and improving the user comfort of the automotive air conditioning system.

[0064] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An air conditioning damper adjustment structure, comprising a housing (100), wherein a first receiving chamber (150) is formed within the housing (100) and second receiving chambers (160) located on both sides of the first receiving chamber (150), characterized in that: The second accommodating chamber (160) is provided with a damper plate (200), and the damper plate (200) is provided with a transmission rack (210); The damper plate (200) is also connected to a transmission mechanism (300), which includes a transmission shaft (320) and a drive source (310) for driving the transmission shaft (320) to rotate. The transmission shaft (320) is provided with a transmission gear (350). The transmission gear (350) includes a gear portion (351) and a first mounting portion (352); wherein, the gear portion (351) is used to mesh with the transmission rack (210); and the first mounting portion (352) is used to be assembled into the mounting hole (170) on the housing (100). The first mounting portion (352) has a first stepped surface (3521) and an elastic buckle (353) on it. After the first mounting portion (352) is assembled into the mounting hole (170), the limiting blocks (3531) on the first stepped surface (3521) and the elastic buckle (353) are located on both sides of the mounting hole (170) to limit the axial movement of the transmission gear (350).

2. The air conditioning damper adjustment structure according to claim 1, characterized in that: The input end of the drive source (310) is connected to a drive gear (330), which is connected to the transmission gear (350) through an intermediate gear (340).

3. The air conditioning damper adjustment structure according to claim 2, characterized in that: The transmission gear (350) connected to the intermediate gear (340) further includes a second mounting portion (354) disposed at the end of the first mounting portion (352); the second mounting portion (354) is provided with an elastic buckle (353) and a guide block (355); the inner wall of the intermediate gear (340) is formed with a guide groove (341) and a snap-fit ​​groove (342); wherein, The guide groove (341) is used for the guide block (355) to be inserted; the snap-fit ​​groove (342) is used for the elastic buckle (353) to be inserted, and a second step surface (343) is formed on the snap-fit ​​groove (342) to cooperate with the limiting block (3531).

4. The air conditioning damper adjustment structure according to claim 3, characterized in that: The snap-fit ​​groove (342) includes a guide section (3421) and an extension section (3422); wherein the guide section (3421) is inclined, and the second step surface (343) is formed at the junction of the guide section (3421) and the extension section (3422).

5. The air conditioning damper adjustment structure according to claim 1, characterized in that: The drive shaft (320) is a polygonal shaft, and the drive gear (350) has an assembly hole (356) through which the drive shaft (320) passes. The assembly hole (356) is a polygonal hole that is adapted to the drive shaft (320).

6. The air conditioning damper adjustment structure according to claim 2, characterized in that: The driving source (310) is a motor, and the driving gear (330) is an incomplete gear.

7. An air conditioning damper adjustment structure according to any one of claims 2-6, characterized in that: The shell is assembled from a main shell (110), an upper shell (120), a left shell (130), and a right shell (140); wherein the first accommodating chamber (150) is enclosed by the main shell (110) and the upper shell (120); the second accommodating chamber (160) is enclosed by the main shell (110), the upper shell (120), and either the left shell (130) or the right shell (140).

8. The air conditioning damper adjustment structure according to claim 7, characterized in that: The damper plate (200) is an arc-shaped plate, and the damper plate (200) is provided with sliding blocks (220) at least on both sides of the first and last ends; the second receiving chamber (160) is provided with sliding grooves (180) on the opposite side walls for the sliding blocks (220) to be inserted; wherein, the sliding groove (180) is formed by two arc-shaped convex strips.

9. The air conditioning damper adjustment structure according to claim 7, characterized in that: The damper plate (200) is provided with two transmission racks (210), each transmission rack (210) is equipped with a transmission gear (350); the left housing (130), the right housing (140) and the main housing (110) are provided with mounting holes (170) for the transmission gears (350) to be inserted.

10. An air conditioning damper adjustment structure according to claim 7, characterized in that: The drive source (310) and drive gear (330) are located on the outer side wall of the right housing (140).

Images