Air return structure of automobile air conditioner

Abstract

The application discloses a return air inlet structure of an automobile air conditioner, which comprises a ventilation pipe slot, a butt joint ring, a return air inlet, a flow guide assembly, a mounting assembly and a stabilizing assembly, and relates to the technical field of return air inlet structures. When the return air inlet needs to be mounted on the automobile, the butt joint of the return air inlet and the butt joint ring is first completed, then the inner sleeve is rotated to drive the driving multiple fixed rods to move synchronously to the outside of the return air inlet, and the fixed rods are inserted into the rectangular connecting hole in the interior of the automobile instrument panel, so that the connection between the return air inlet and the automobile instrument panel is completed. The mounting bolt assembly is not needed to be used to mount the butt joint ring and the automobile instrument panel, the mounting steps of the butt joint ring and the automobile instrument panel are obviously simplified, the mounting operation of the return air inlet in the automobile can be realized through repeated operation, and the mounting efficiency of the return air structure is improved.

Description

Technical Field

[0001] This invention relates to the field of return air vent structure technology, specifically the return air vent structure of automotive air conditioning. Background Technology

[0002] Automotive air conditioning systems (HVAC) have two air intake modes: one is to draw air from outside the car to achieve air circulation, which is called external circulation, and the air in it is called fresh air; the other is to draw air from inside the car to achieve air circulation, which is called internal circulation, and the air in it is called return air; and there is a hybrid mode, which is called internal and external circulation.

[0003] Currently, the installation of the return air vent structure in automotive air conditioning systems typically requires connecting the return air vent to the ventilation duct and then fixing it to the dashboard surface with bolts. This makes the entire installation process quite cumbersome. Since multiple return air vents are needed inside the vehicle to improve the efficiency of air circulation, the cumbersome installation process reduces the installation efficiency of the return air structure. Summary of the Invention

[0004] The purpose of this invention is to provide a return air vent structure for automotive air conditioning systems, in order to solve the problem that the installation steps of return air vents are cumbersome and that repeatedly installing multiple return air vents reduces the installation efficiency of the return air structure.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a return air vent structure for an automotive air conditioner, comprising a ventilation duct groove and a docking ring fixedly connected to one end of the outer wall of the ventilation duct groove, wherein the docking ring has a return air vent extending to the outside of the docking ring, characterized in that the docking ring has a flow guiding component for adjusting the return air angle, the docking ring has an installation component for quick installation both inside and outside the docking ring, and the docking ring has a stabilizing component connected to the connecting component on the outside of the docking ring.

[0006] As a further embodiment of the present invention: the installation assembly includes an annular groove disposed inside the return air inlet and extending to one end of the return air inlet away from the outer wall of the ventilation duct groove, a drive disk is disposed at one end of the inner wall of the annular groove, a connecting ring is fixedly connected to one end of the outer wall of the drive disk, a turntable located outside the return air inlet is fixedly connected to the other end of the connecting ring, and a fixing rod extending to the outer surface of the return air inlet is disposed inside the return air inlet.

[0007] As a further embodiment of the present invention: the mounting assembly further includes a worm-shaped guide rail disposed at the end of the drive disk away from the connecting ring, and multiple sets of fixing rods are provided, the multiple sets of fixing rods being arranged in a ring with the connecting ring as the center, and each set of fixing rods having a drive groove extending to the surface of the fixing rod inside, the drive groove matching the worm-shaped guide rail.

[0008] As a further embodiment of the present invention: the stabilizing component includes an inner sleeve fixedly connected to one end of the turntable near the outer wall of the drive disk, and an outer sleeve sleeved on the outer wall of the inner sleeve fixedly connected to one end of the drive disk near the outer wall of the turntable. A spring is provided inside the inner sleeve, and the two ends of the spring are fixedly connected to the inner sleeve and the outer sleeve, respectively.

[0009] As a further embodiment of the present invention: the stabilizing component further includes a limiting block symmetrically fixedly connected to the outer wall of the connecting ring, a limiting ring fixedly connected to one end of the outer wall of the inner sleeve, and a movable groove matching the outer sleeve is provided inside the outer sleeve.

[0010] As a further embodiment of the present invention: the fixing rod is configured as a rectangular structure, and the interior of the annular groove is provided with multiple sets of rectangular grooves extending to the outer wall of the return air inlet, and the fixing rod is movably disposed inside the return air inlet through the rectangular grooves.

[0011] As a further embodiment of the present invention: the interior of the return air vent is provided with a limiting groove that matches the limiting block, and the limiting block is movably disposed inside the return air vent through the limiting groove.

[0012] As a further embodiment of the present invention: the air guiding assembly includes multiple sets of inner air guiding plates rotatably connected inside the return air inlet, and an inner connecting rod is fixedly connected between the multiple sets of inner air guiding plates. Multiple sets of outer air guiding plates located at one end of the inner air guiding plates are rotatably connected inside the return air inlet via a rotating shaft. Each set of outer air guiding plates is provided with a connecting shaft inside. An outer connecting rod is rotatably connected to the outer wall of the multiple sets of connecting shafts. An adjusting plate is fixedly connected to the outer wall of one set of outer air guiding plates. A main air guiding plate that is rotatably connected to the return air inlet is provided at the bottom of the multiple sets of inner air guiding plates.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. By setting up the installation components, when it is necessary to install the return air vent onto the car, first move the return air vent so that it is inserted into the inside of the docking ring to complete the docking. After that, rotate the inner sleeve to drive the connecting ring to rotate. The rotation of the connecting ring drives the drive plate to rotate, and the rotation of the drive plate drives the worm-shaped guide rail to rotate. When the worm-shaped guide rail rotates, it drives the fixed rod to move laterally through the drive groove, so that multiple sets of fixed rods move synchronously to the outside of the return air vent and insert into the rectangular connecting hole inside the car dashboard. This completes the connection between the return air vent and the vehicle dashboard. Through the cooperation between the above parts, it is possible to avoid the need to use the installation bolt assembly to install the docking ring and the vehicle dashboard, which significantly simplifies the installation steps between the docking ring and the vehicle dashboard. By repeating the above operation, the installation operation of the return air vent inside the vehicle can be realized, thereby improving the installation efficiency of the return air structure.

[0015] 2. By setting a stabilizing component, before installing the docking ring, the turntable needs to be pulled to move the outer sleeve, which in turn stretches the spring. Simultaneously, the turntable's movement moves the connecting ring, which in turn moves the limit block, separating it from the limit groove. This releases the rotation limit on the turntable. At this point, the docking ring can be connected to the vehicle's dashboard by rotating the turntable. After installation, by releasing the force on the turntable, the inner sleeve moves in the opposite direction under the spring's reset action, causing the turntable to move in the opposite direction as well. This causes the connecting ring and the limit block to move in the opposite direction, and the limit block enters the limit groove. The turntable can no longer rotate, thus completing the rotation limit operation. This prevents accidental activation of the turntable after the docking ring installation, which could cause the installation components to reverse and disconnect the air vent from the vehicle's dashboard. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is an exploded view of the ventilation duct, connecting ring, and return air inlet of the present invention;

[0018] Figure 3 This is a schematic diagram of the flow guiding mechanism of the present invention;

[0019] Figure 4 This is an exploded view of the ventilation duct, docking ring, and mounting components of the present invention;

[0020] Figure 5 This is an exploded view of the mounting components of the present invention;

[0021] Figure 6 This is a cross-sectional view of the turntable of the present invention;

[0022] Figure 7 This is an enlarged view of point A in the present invention;

[0023] Figure 8 This is a schematic diagram of the fixing rod structure of the present invention.

[0024] In the diagram: 1. Ventilation duct; 2. Connecting ring; 3. Return air inlet; 4. Adjusting plate; 5. Turntable; 6. Annular groove; 7. Connecting ring; 8. Drive plate; 9. Fixing rod; 10. Spiral guide rail; 11. Limiting block; 12. Outer sleeve; 13. Spring; 14. Inner sleeve; 15. Limiting ring; 16. Moving slide; 17. Drive groove; 18. Main guide plate; 19. Inner guide plate; 20. Outer guide plate; 21. Inner connecting rod; 22. Outer connecting rod; 23. Connecting shaft. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention 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 invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0027] Please see Figures 1-8In this embodiment of the invention, the return air vent structure of the automotive air conditioner includes a ventilation duct groove 1 and a docking ring 2 fixedly connected to one end of the outer wall of the ventilation duct groove 1. The docking ring 2 has a return air vent 3 extending to the outside of the docking ring 2. The docking ring 2 also has a flow guide component for adjusting the return air angle. Installation components for quick installation of the docking ring 2 are provided both inside and outside the docking ring 2. A stabilizing component connected to the connecting component is provided outside the docking ring 2. The installation component includes an annular groove 6 located inside the return air vent 3 and extending to the end of the return air vent 3 away from the outer wall of the ventilation duct groove 1. A driving disc 8 is provided at one end of the inner wall of the annular groove 6, and a fixed connection is provided at one end of the outer wall of the driving disc 8. A connecting ring 7 is attached, and a turntable 5 located outside the return air vent 3 is fixedly connected to the other end of the connecting ring 7. A fixing rod 9 extending to the outer surface of the return air vent 3 is provided inside the return air vent 3. The mounting assembly also includes a volute guide rail 10 located at the end of the drive plate 8 away from the connecting ring 7. Multiple sets of fixing rods 9 are provided, and the multiple sets of fixing rods 9 are arranged in a ring with the connecting ring 7 as the center. The interior of each set of fixing rods 9 is provided with a drive groove 17 extending to the surface of the fixing rod 9. The drive groove 17 matches the volute guide rail 10. The fixing rod 9 is set as a rectangular structure. Multiple sets of rectangular grooves extending to the outer wall of the return air vent 3 are provided inside the annular groove 6. The fixing rod 9 is movably set inside the return air vent 3 through the rectangular grooves.

[0028] In this embodiment: The interior of the car dashboard is provided with a rectangular connecting hole that matches the outer diameter of the fixing rod 9. When the return air vent 3 needs to be installed on the car, the return air vent 3 is first moved so that it is inserted into the interior of the docking ring 2 to complete the docking. After that, the inner sleeve 14 is rotated to drive the connecting ring 7 to rotate. The rotation of the connecting ring 7 drives the drive disc 8 to rotate. The rotation of the drive disc 8 drives the worm-shaped guide rail 10 to rotate. When the worm-shaped guide rail 10 rotates, it drives the fixing rod 9 to move laterally through the drive groove 17, so that multiple sets of fixing rods 9 move synchronously to the outside of the return air vent 3 and are inserted into the rectangular connecting hole inside the car dashboard. This completes the connection between the return air vent 3 and the vehicle dashboard. Through the cooperation between the above parts, it is not necessary to use the mounting bolt assembly to install the docking ring 2 and the vehicle dashboard, which significantly simplifies the installation steps between the docking ring 2 and the vehicle dashboard. By repeating the above operation, the installation operation of the return air vent 3 inside the vehicle can be realized, thereby improving the installation efficiency of the return air structure.

[0029] Please refer to this carefully. Figures 1-8The stabilizing component includes an inner sleeve 14 fixedly connected to one end of the turntable 5 near the outer wall of the drive disc 8. An outer sleeve 12, which is fitted onto the outer wall of the inner sleeve 14, is fixedly connected to one end of the drive disc 8 near the outer wall of the turntable 5. A spring 13 is provided inside the inner sleeve 14, and the two ends of the spring 13 are fixedly connected to the inner sleeve 14 and the outer sleeve 12, respectively. The stabilizing component also includes a limiting block 11 symmetrically fixedly connected to the outer wall of the connecting ring 7. A limiting ring 15 is fixedly connected to one end of the outer wall of the inner sleeve 14. A movable groove 16 matching the outer sleeve 12 is provided inside the outer sleeve 12. A limiting groove matching the limiting block 11 is provided inside the return air vent 3. The limiting block 11 is movably disposed inside the return air vent 3 through the limiting groove.

[0030] In this embodiment: Before installing the docking ring 2, the turntable 5 needs to be pulled to move the outer sleeve 12, thereby stretching the spring 13. Simultaneously, the movement of the turntable 5 moves the connecting ring 7, which in turn moves the limiting block 11, separating it from the limiting groove. This releases the rotational limitation on the turntable 5. At this point, the docking ring 2 can be connected to the vehicle's dashboard by rotating the turntable 5. After installation, the action on the turntable 5 is released. Force is applied, and at this time, the inner sleeve 14 moves in the opposite direction under the reset action of the spring 13, which drives the turntable 5 to move in the opposite direction. This causes the turntable 5 to drive the connecting ring 7 and the limiting block 11 to move in the opposite direction. When the limiting block 11 moves into the limiting groove, the turntable 5 can no longer rotate. This completes the rotation limiting operation of the turntable 5, thereby preventing the installation components from operating in the opposite direction due to accidental contact with the turntable 5 after the installation of the connecting ring 2 is completed. This would release the installation state of the return air vent 3 and the vehicle dashboard, and improve the stability of the return air vent structure.

[0031] Please refer to this carefully. Figures 1-3 The airflow guiding assembly includes multiple sets of inner airflow guiding plates 19 rotatably connected inside the return air vent 3. The multiple sets of inner airflow guiding plates 19 are fixedly connected to each other by an inner connecting rod 21. The return air vent 3 is rotatably connected to multiple sets of outer airflow guiding plates 20 located at one end of the inner airflow guiding plates 19 via a rotating shaft. Each set of outer airflow guiding plates 20 is provided with a connecting shaft 23 inside. The outer walls of the multiple sets of connecting shafts 23 are rotatably connected to an outer connecting rod 22. An adjusting plate 4 is fixedly connected to the outer wall of one set of outer airflow guiding plates 20. The bottom of the multiple sets of inner airflow guiding plates 19 is provided with an airflow guiding main plate 18 rotatably connected to the return air vent 3.

[0032] In this embodiment: by adjusting the adjustment plate 4, a set of outer guide plates 20 can be driven to deflect around their own rotation axis inside the return air vent 3. When the set of outer guide plates 20 deflects, it drives the connecting shaft 23 to move. The movement of the connecting shaft 23 drives the outer connecting rod 22 to move. The movement of the outer connecting rod 22 drives multiple sets of outer guide plates 20 to deflect around their own rotation axis, thereby realizing the adjustment of the ventilation angle of the return air vent 3. At the same time, when the vehicle return air system is working, multiple sets of inner guide plates 19 can be fixed by the inner connecting rod 21, so as to buffer and guide the airflow flowing inside the return air vent 3, and avoid the airflow directly impacting the inner wall of the ventilation duct 1, which would cause greater noise in the vehicle and affect the user experience.

[0033] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A return air vent structure for an automotive air conditioner, comprising a ventilation duct (1) and a connecting ring (2) fixedly connected to one end of the outer wall of the ventilation duct (1), wherein a return air vent (3) extending to the outside of the connecting ring (2) is provided inside the connecting ring (2), characterized in that: The return air inlet (3) is provided with a flow guide component for adjusting the return air angle. The return air inlet (3) is provided with an installation component for quick installation inside and outside. The return air inlet (3) is provided with a stabilizing component connected to the installation component. The installation assembly includes an annular groove (6) disposed inside the return air inlet (3) and extending to one end of the return air inlet (3) away from the outer wall of the ventilation duct (1). A drive disc (8) is disposed at one end of the inner wall of the annular groove (6). A connecting ring (7) is fixedly connected to one end of the outer wall of the drive disc (8). A turntable (5) located outside the return air inlet (3) is connected to the other end of the connecting ring (7). A fixing rod (9) extending to the outer surface of the return air inlet (3) is disposed inside the return air inlet (3). The mounting assembly also includes a worm-shaped guide rail (10) disposed at the end of the drive disk (8) away from the connecting ring (7). Multiple sets of fixing rods (9) are provided, and the multiple sets of fixing rods (9) are arranged in a ring with the connecting ring (7) as the center. The interior of each set of fixing rods (9) is provided with a drive groove (17) extending to the surface of the fixing rod (9), and the drive groove (17) matches the worm-shaped guide rail (10). The stabilizing component includes an inner sleeve (14) fixedly connected to one end of the turntable (5) near the outer wall of the drive disk (8), and an outer sleeve (12) fixedly connected to one end of the drive disk (8) near the outer wall of the turntable (5) and sleeved on the outer wall of the inner sleeve (14). A spring (13) is provided inside the inner sleeve (14), and the two ends of the spring (13) are fixedly connected to the inner sleeve (14) and the outer sleeve (12) respectively. The stabilizing component also includes a limiting block (11) symmetrically fixedly connected to the outer wall of the connecting ring (7), a limiting ring (15) fixedly connected to one end of the outer wall of the inner sleeve (14), and a movable groove (16) matching the outer sleeve (12) is provided inside the outer sleeve (12).

2. The return air vent structure of the automotive air conditioner according to claim 1, characterized in that, The fixing rod (9) is configured as a rectangular structure. The annular groove (6) is provided with multiple sets of rectangular grooves extending to the outer wall of the return air inlet (3). The fixing rod (9) is movably disposed inside the return air inlet (3) through the rectangular grooves.

3. The return air vent structure of the automotive air conditioner according to claim 1, characterized in that, The return air vent (3) is provided with a limiting groove that matches the limiting block (11), and the limiting block (11) is movably disposed inside the return air vent (3) through the limiting groove.

4. The return air vent structure of the automotive air conditioner according to claim 1, characterized in that, The airflow guiding assembly includes multiple sets of inner airflow guiding plates (19) rotatably connected inside the return air inlet (3). An inner connecting rod (21) is fixedly connected between the multiple sets of inner airflow guiding plates (19). Multiple sets of outer airflow guiding plates (20) located at one end of the inner airflow guiding plates (19) are rotatably connected inside the return air inlet (3) via a rotating shaft. A connecting shaft (23) is provided inside each of the multiple sets of outer airflow guiding plates (20). An outer connecting rod (22) is rotatably connected to the outer wall of the multiple sets of connecting shafts (23). An adjusting plate (4) is fixedly connected to the outer wall of one set of outer airflow guiding plates (20). A main airflow guiding plate (18) rotatably connected to the return air inlet (3) is provided at the bottom of the multiple sets of inner airflow guiding plates (19).

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