Automobile D-column air duct injection molding part with stable drainage function

Abstract

The utility model relates to the technical field of automobile injection molding parts, and discloses an automobile D column air duct injection molding part with a stable drainage function, which comprises an air duct injection molding part, two ends of the air duct injection molding part are respectively and fixedly connected with a connecting plate, the inner wall of each connecting plate is provided with a threaded hole, the inner wall of the air duct injection molding part is provided with a plurality of drainage holes, and the drainage holes are communicated with the threaded holes. A plurality of exhaust holes are formed in the side face, away from the connecting plate, of the air duct injection molding part, a plurality of through holes are formed in the inner wall of the air duct injection molding part, adjusting cylinders are inserted into the inner walls of the through holes correspondingly, and elastic metal sheets are fixedly connected into the adjusting cylinders. According to the connecting plate provided by the utility model, the air duct injection molding part can be fixedly mounted in the automobile D column, the drainage holes and the air patting holes can be used for conducting drainage treatment on airflow, and the flow guide blocks can be used for conducting flow guide, so that the efficiency of the airflow flowing into the drainage holes is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive injection molding technology, and in particular to an automotive D-pillar air duct injection molding part with a stable airflow guiding function. Background Technology

[0002] The D-pillar is part of the car's body structure, usually located behind the rear seats. It's a pillar extending from the roof to the rear of the vehicle. The D-pillar air duct is an airflow channel designed in the D-pillar area of ​​the car body. Located inside the D-pillar above the rear door, it extends from the D-pillar to the rear of the vehicle. Its main function is to optimize the vehicle's aerodynamic performance. When the vehicle is moving, airflow is guided to the rear of the vehicle through the D-pillar air duct, effectively reducing wind resistance and increasing downforce at high speeds. This helps improve the vehicle's stability and handling, making the vehicle more stable and safer during high-speed driving or lane changes.

[0003] In existing technologies, automotive D-pillar air ducts are generally injection molded from plastic raw materials. To ensure performance, multiple airflow holes are provided inside the D-pillar air duct. The lack of a guiding structure on the side wall of the air duct located at the airflow holes affects the airflow efficiency. Furthermore, as the vehicle speed changes during driving, the airflow and wind resistance on the vehicle surface also change. The injection molding of the D-pillar air duct results in a fixed airflow hole, making it difficult to adaptively adjust the airflow efficiency according to changes in wind resistance during vehicle operation. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in the prior art, the lack of a flow guiding structure on the side wall of the air duct located at the air intake hole affects the air intake efficiency. Furthermore, the vehicle speed changes continuously during driving, causing changes in airflow and wind resistance on the vehicle surface. The injection molding of the D-pillar air duct results in a fixed air intake hole, which is not convenient for adaptively adjusting the airflow intake efficiency according to changes in wind resistance during vehicle driving. Therefore, this invention proposes an injection-molded D-pillar air duct for automobiles with a stable air intake function.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A car D-pillar air duct injection molded part with stable airflow function includes an air duct injection molded part, with connecting plates fixedly connected to both ends of the air duct injection molded part. The inner wall of the connecting plates has threaded holes. The inner wall of the air duct injection molded part has multiple airflow holes. The side of the air duct injection molded part away from the connecting plates has multiple exhaust holes. The inner wall of the air duct injection molded part has multiple through holes. Adjusting cylinders are inserted into the inner walls of the multiple through holes. An elastic metal sheet is fixedly connected inside the adjusting cylinder. A transmission rod is fixedly connected to the inner wall of the elastic metal sheet. A movable plug is fixedly connected to the end of the transmission rod away from the elastic metal sheet. The inner wall of the adjusting cylinder is tapered. Multiple openings are circumferentially formed on the side wall of the movable plug. The side wall of the movable plug is slidably disposed on the inner wall of the adjusting cylinder.

[0007] Preferably, a guide block is fixedly connected to the side wall of the air duct injection molded part located at the drainage hole, and the guide block is inclined.

[0008] Preferably, a flow guide ring is fixedly connected to one end of the regulating cylinder located inside the air duct injection molded part, and a sealing rubber ring is fixedly connected to the inner wall of the air duct injection molded part located in the through hole.

[0009] Preferably, a plurality of guide blocks are fixedly connected to the rod wall of the transmission rod, and a guide groove is provided on the inner wall of the adjusting cylinder, with the guide blocks slidably disposed on the inner wall of the guide groove.

[0010] Preferably, the inner wall of the air duct injection molded part opposite to the regulating cylinder has an opening, and a fixing rod is fixedly connected to the inner wall of the opening. An opening and closing plate is movably sleeved on the wall of the fixing rod.

[0011] Preferably, a torsion spring is sleeved on the wall of the fixing rod, one end of the torsion spring is fixedly connected to the inner wall of the opening and closing plate, and the other end of the torsion spring is fixedly connected to the inner wall of the air duct injection molded part.

[0012] Compared with the prior art, this utility model provides an injection-molded part for automotive D-pillar air ducts with stable airflow guidance, which has the following beneficial effects:

[0013] 1. This automotive D-pillar air duct injection molded part with stable airflow can be fixedly installed inside the automotive D-pillar through a connecting plate. The airflow holes and vent holes can guide the airflow, while the guide block can guide the airflow and improve the efficiency of airflow flowing into the airflow holes.

[0014] 2. This automotive D-pillar air duct injection molded part, which has a stable airflow guiding function, can increase the gas pressure on the surface of the movable plug, which can drive the transmission rod to move and cause the elastic metal sheet to bend and deform. This can increase the gap between the airflow and the regulating cylinder, thereby improving the airflow guiding efficiency. When the wind resistance increases, it can promptly accelerate the airflow guiding efficiency of the air duct injection molded part, which can meet the usage effect and ensure timely and stable airflow treatment of the gas flowing through the vehicle body at different vehicle speeds.

[0015] 3. This automotive D-pillar air duct injection molded part with stable airflow function increases the air pressure inside the air duct injection molded part when the airflow into the air duct injection molded part increases. When the airflow flows out of the exhaust hole, it will generate more noise. When the air pressure increases, the gas will push the opening and closing plate to swing along the rod wall of the fixed rod, so that the inner wall of the air duct injection molded part at the opening opens, increases the gap for gas discharge, improves ventilation efficiency, and reduces noise. The torsion spring can squeeze the opening and closing plate after the gas is discharged to make it return to its original position in time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an injection-molded D-pillar air duct for automobiles with a stable airflow guiding function, as proposed in this utility model.

[0017] Figure 2 for Figure 1 Enlarged structural diagram of part A in the middle section;

[0018] Figure 3 for Figure 1 Side view of the structure of the movable plug.

[0019] In the diagram: 1. Injection molded air duct part; 2. Connecting plate; 3. Drain hole; 4. Exhaust hole; 5. Guide block; 6. Adjusting cylinder; 7. Drain ring; 8. Sealing rubber ring; 9. Movable plug; 10. Transmission rod; 11. Elastic metal sheet; 12. Guide block; 13. Fixing rod; 14. Opening and closing plate; 15. Torsion spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-3A car D-pillar air duct injection molded part with stable airflow function includes an air duct injection molded part 1. Connecting plates 2 are fixedly connected to both ends of the air duct injection molded part 1. Threaded holes are opened on the inner wall of the connecting plates 2. Multiple airflow holes 3 are opened on the inner wall of the air duct injection molded part 1. Multiple exhaust holes 4 are opened on the side of the air duct injection molded part 1 away from the connecting plates 2. Multiple through holes are opened on the inner wall of the air duct injection molded part 1. Adjusting cylinders 6 are inserted into the inner walls of the multiple through holes. Elastic metal sheets 11 are fixedly connected inside the adjusting cylinders 6. A transmission rod 10 is fixedly connected to the inner wall of the elastic metal sheets 11. A movable plug 9 is fixedly connected to the end of the transmission rod 10 away from the elastic metal sheets 11. The inner wall of the adjusting cylinder 6 is set as a conical surface. Multiple openings are opened around the side wall of the movable plug 9. The side wall of the movable plug 9 is slidably disposed on the inner wall of the adjusting cylinder 6.

[0022] A guide block 5 is fixedly connected to the side wall of the air duct injection molded part 1 located at the drainage hole 3. The guide block 5 is inclined. A drainage ring 7 is fixedly connected to one end of the regulating cylinder 6 located inside the air duct injection molded part 1. A sealing rubber ring 8 is fixedly connected to the inner wall of the air duct injection molded part 1 located at the through hole. Multiple guide blocks 12 are fixedly connected to the rod wall of the transmission rod 10. A guide groove is opened on the inner wall of the regulating cylinder 6. The guide block 12 is slidably set on the inner wall of the guide groove.

[0023] In use, the air duct injection molded part 1 can be fixedly installed in the D-pillar of the car through the connecting plate 2. The air diversion hole 3 and the air blower hole 4 can divert the airflow, while the guide block 5 can guide the airflow and improve the efficiency of the airflow flowing into the interior of the air diversion hole 3.

[0024] When the vehicle speed changes, causing an increase in airflow and wind resistance, the increased gas pressure on the surface of the movable plug 9 can push the transmission rod 10 to move and cause the elastic metal sheet 11 to bend and deform. This can increase the gap between the airflow and the regulating cylinder 6, thereby improving the airflow diversion efficiency. As a result, when wind resistance increases, the airflow diversion efficiency of the injection molded part of the air duct can be accelerated in a timely manner, thus meeting the usage requirements and ensuring timely and stable diversion of the gas flowing through the vehicle body at different vehicle speeds. The guide block 12 slides along the inner wall of the guide groove, which can improve the stability of the movement of the slide rod transmission rod 10 and the movable plug 9.

[0025] To improve ventilation efficiency and reduce noise, such as Figure 1-3 As shown, the inner wall of the air duct injection molded part 1 on the side away from the regulating cylinder 6 has an opening. A fixing rod 13 is fixedly connected to the inner wall of the opening. An opening and closing plate 14 is movably sleeved on the rod wall of the fixing rod 13. A torsion spring 15 is sleeved on the rod wall of the fixing rod 13. One end of the torsion spring 15 is fixedly connected to the inner wall of the opening and closing plate 14, and the other end of the torsion spring 15 is fixedly connected to the inner wall of the air duct injection molded part 1.

[0026] When the airflow into the air duct injection molded part 1 increases, the air pressure inside the air duct injection molded part 1 increases. When the airflow flows out of the exhaust hole 4, it will generate a lot of noise. When the air pressure increases, the gas will push the opening and closing plate 14 to swing along the rod wall of the fixed rod 13, so that the inner wall of the air duct injection molded part 1 at the opening opens, increasing the gap for gas discharge, improving ventilation efficiency, and reducing noise. The torsion spring 15 can squeeze the opening and closing plate 14 after the gas is discharged so that it can be reset in time.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A car D-pillar air duct injection molded part with stable airflow function, comprising an air duct injection molded part (1), characterized in that: The two ends of the air duct injection molded part (1) are respectively fixedly connected to the connecting plate (2). The inner wall of the connecting plate (2) is provided with threaded holes. The inner wall of the air duct injection molded part (1) is provided with multiple drainage holes (3). The side of the air duct injection molded part (1) away from the connecting plate (2) is provided with multiple exhaust holes (4). The inner wall of the air duct injection molded part (1) is provided with multiple through holes. The inner walls of the multiple through holes are respectively inserted with adjusting cylinders (6). The inside of the adjusting cylinder (6) is fixedly connected with an elastic metal sheet (11). The inner wall of the elastic metal sheet (11) is fixedly connected with a transmission rod (10). The end of the transmission rod (10) away from the elastic metal sheet (11) is fixedly connected with a movable plug (9). The inner wall of the adjusting cylinder (6) is set as a conical surface. Multiple openings are provided around the side wall of the movable plug (9). The side wall of the movable plug (9) is slidably disposed on the inner wall of the adjusting cylinder (6).

2. The automotive D-pillar air duct injection molded part with stable airflow diversion function according to claim 1, characterized in that: The air duct injection molding part (1) is fixedly connected to the side wall of the drainage hole (3) with a guide block (5), and the guide block (5) is inclined.

3. The automotive D-pillar air duct injection molded part with stable airflow function according to claim 1, characterized in that: The regulating cylinder (6) is fixedly connected to a flow guide ring (7) at one end inside the air duct injection molded part (1), and a sealing rubber ring (8) is fixedly connected to the inner wall of the air duct injection molded part (1) at the through hole.

4. The automotive D-pillar air duct injection molded part with stable airflow diversion function according to claim 1, characterized in that: Multiple guide blocks (12) are fixedly connected to the rod wall of the transmission rod (10), and a guide groove is provided on the inner wall of the adjusting cylinder (6). The guide blocks (12) are slidably disposed on the inner wall of the guide groove.

5. A car D-pillar air duct injection molded part with stable airflow function according to claim 1, characterized in that: The air duct injection molded part (1) has an opening on the inner wall of the side away from the regulating cylinder (6). A fixing rod (13) is fixedly connected to the inner wall of the opening, and an opening and closing plate (14) is movably sleeved on the rod wall of the fixing rod (13).

6. A car D-pillar air duct injection molded part with stable airflow diversion function according to claim 5, characterized in that: A torsion spring (15) is sleeved on the wall of the fixed rod (13). One end of the torsion spring (15) is fixedly connected to the inner wall of the opening and closing plate (14), and the other end of the torsion spring (15) is fixedly connected to the inner wall of the air duct injection molded part (1).

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