Long head heavy truck instrument desk front defrosting and demisting air duct

Abstract

The application discloses a long-head heavy truck instrument desk front defrosting and demisting air duct, which comprises a lower air duct, a partition plate, an instrument desk body, an air deflector and an upper cover plate. An air inlet is formed in the bottom end of the lower air duct, and a mounting hole is formed in one side of the top of the lower air duct. A boss column is threadedly connected to the surface of the mounting hole through screws, and the boss column is arranged in the middle of the partition plate. A plurality of welding holes are formed in the top end of the lower air duct, and a welding column is hot melt welded to the surface of each of the welding holes. The plurality of welding columns are fixedly connected to the bottom end of the instrument desk body. The top end of the instrument desk body is clamped with the air deflector. Clamping holes are formed in the two sides of the top of the air deflector. The long-head heavy truck instrument desk front defrosting and demisting air duct effectively utilizes limited layout space through high integration, increases the internal cross-sectional area of the front defrosting and demisting air duct, reduces the pressure loss along the offset air duct, improves the front defrosting and demisting efficiency of the vehicle, and reduces the cost.

Description

Technical Field

[0001] This invention relates to the field of air duct technology, specifically to a defrosting and defogging air duct in front of the dashboard of a long-nose heavy truck. Background Technology

[0002] In the heavy-duty truck industry, the air conditioning in the cab of long-nose heavy-duty trucks is usually located on the right side of the cab, that is, the air inlet of the front defrost and defog air duct is located on the right side of the cab.

[0003] Compared to the cabs of flat-nose heavy trucks where the air conditioning is located in the middle of the cab, the dashboard air ducts of long-nose heavy trucks present greater challenges in ensuring uniform airflow from the defrost and defogging vents from left to right, thus achieving the vehicle's defrost and defogging performance targets. Existing defrost and defogging air ducts in front of the dashboard of long-nose heavy trucks have the following drawbacks:

[0004] (1) The defrosting and defogging air duct structure in front of the dashboard of long-nose heavy trucks is mostly a left-right segmented air duct, with a large number of parts and a large space occupied.

[0005] (2) The defrosting and defogging air duct in front of the dashboard of the long-nose heavy truck is relatively heavy, and the front of the dashboard body has an internal reinforcing frame, which results in higher manufacturing costs. Summary of the Invention

[0006] The purpose of this invention is to provide a defrosting and defogging air duct in front of the dashboard of a long-nose heavy-duty truck, in order to solve the problems mentioned in the background art, that the existing defrosting and defogging air duct structures in front of the dashboard of long-nose heavy-duty trucks are mostly left and right segmented air ducts, with a large number of parts, occupying a large layout space, having a large weight, and high manufacturing cost.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a defrosting and defogging air duct in front of the dashboard of a long-nose heavy truck, comprising a lower air duct, a partition, a dashboard body, an air guide plate, and an upper cover plate. An air inlet is provided at the bottom of the lower air duct, and a mounting hole is provided on one side of the top of the lower air duct. A boss post is threadedly connected to the surface of the mounting hole by screws, and the boss post is located in the middle of the partition. Several welding holes are provided at the top of the lower air duct, and welding posts are hot-melt welded to the surfaces of the welding holes. These welding posts are fixedly connected to the bottom of the dashboard body. An air guide plate is engaged at the top of the dashboard body. Engagement holes are provided on both sides of the top of the air guide plate, and engagement bosses are engaged on the surfaces of two engagement holes. These engagement bosses are fixedly connected to the bottom of the upper cover plate.

[0008] When using this technical solution for the front defrosting and defogging air duct of the dashboard of a long-nose heavy truck, the highly integrated design effectively utilizes the limited layout space, increases the internal cross-sectional area of ​​the front defrosting and defogging air duct, reduces the pressure loss along the offset air duct, improves the vehicle's front defrosting and defogging efficiency, and reduces costs.

[0009] In a preferred embodiment of the present invention, a ventilation channel is provided between the instrument panel body, the air guide plate, and the upper cover plate. A defrosting and defogging air duct is provided at the top of the ventilation channel. Several vertical ribs are fixedly connected to the inner wall of the ventilation channel, and the ventilation channel is in the shape of a narrow, elongated groove. The several vertical ribs divide the ventilation channel into several rectangular independent small air ducts.

[0010] In a preferred embodiment of the present invention, the inner wall of the upper cover plate is provided with snap-fit ​​seats on both sides, and the surfaces of the two snap-fit ​​seats are provided with snap-fit ​​holes by snap-fit ​​fasteners, and the two snap-fit ​​holes are respectively opened on both sides of the top of the instrument panel body. The upper cover plate and the instrument panel body are connected by snap-fit ​​fasteners.

[0011] In a preferred embodiment of the present invention, long ribs are provided on both sides of the top of the inner wall of the lower air duct, and the partition and long ribs divide the interior of the lower air duct from top to bottom into a cavity and an assembly air duct. The partition and long ribs divide the interior of the lower air duct.

[0012] As a preferred embodiment of the present invention, the air guide plate is a hollow, thin-walled structure with a wide top and narrow bottom.

[0013] As a preferred embodiment of the present invention, the partition is a Y-shaped thin-walled structure.

[0014] As a preferred embodiment of the present invention, the lower air duct, partition, instrument panel body, air guide plate, and upper cover are formed by injection molding. The use of injection molding for all components of the device facilitates production.

[0015] As a preferred embodiment of the present invention, sponge sealing strips are adhered to the joints between the lower air duct, partition, instrument panel body, air guide plate, and upper cover plate. The sponge sealing strips improve the sealing performance of the connections between the components.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The front defrost and defog air duct is highly integrated with the instrument panel body, which effectively utilizes the limited layout space, increases the internal cross-sectional area of ​​the front defrost and defog air duct, reduces the pressure loss along the offset air duct, thereby reducing the energy loss of the air conditioning outlet and improving the efficiency of the vehicle's front defrost and defog.

[0018] 2. The front defrost and defog air duct provides reinforced support to the front of the instrument panel, replacing the front reinforced frame of the instrument panel and reducing design costs. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is an exploded view of the present invention;

[0021] Figure 3 This is a side cross-sectional view of the present invention;

[0022] Figure 4 This is a side cross-sectional view of the connection between the downdraft duct and the partition in this invention;

[0023] Figure 5 This is a side cross-sectional view of the present invention;

[0024] Figure 6 This is a side cross-sectional view of the connection between the air guide plate and the upper cover plate of the present invention.

[0025] In the diagram: 1. Lower air duct; 2. Partition plate; 3. Instrument panel body; 4. Air guide plate; 5. Top cover plate; 6. Air inlet; 7. Mounting hole; 8. Screw; 9. Boss column; 10. Long rib; 11. Upper cavity; 12. Assembly air duct; 13. Welding hole; 14. Welding column; 15. Snap-fit ​​hole; 16. Snap-fit ​​boss; 17. Sponge sealing strip; 18. Ventilation channel; 19. Defrosting and defogging air duct; 20. Vertical rib; 21. Snap-fit ​​seat; 22. Snap-fit ​​buckle; 23. Snap-fit ​​hole. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-6 This invention provides a defrosting and defogging air duct for the dashboard of a long-nose heavy-duty truck, including a lower air duct 1, a partition 2, a dashboard body 3, an air guide plate 4, and an upper cover plate 5. The lower air duct 1 has an air inlet 6 at its bottom for connection to an air conditioner. A mounting hole 7 is provided on one side of the top of the lower air duct 1. A boss post 9 is threadedly connected to the surface of the mounting hole 7 by screws 8, and the boss post 9 is located in the middle of the partition 2. Several welding holes 13 are provided at the top of the lower air duct 1. Welding posts 14 are hot-melt welded to the surface of each welding hole 13, and the welding posts 14 are fixedly connected to the bottom of the dashboard body 3 by welding. The air guide plate 4 is engaged at the top of the dashboard body 3. Engagement holes 15 are provided on both sides of the top of the air guide plate 4. Engagement protrusions 16 are engaged on the surface of each engagement hole 15, and the two engagement protrusions 16 are fixedly connected to the bottom of the upper cover plate 5 by engagement.

[0028] In use, the partition 2 is set in the lower air duct 1 and connected with the lower air duct 1 to form the assembly air duct 12. The lower right end of the lower air duct 1 is the offset air inlet 6 connected to the air conditioner, and the upper right end is divided into an air outlet channel by the partition 2. The air guide plate 4 is connected with the upper cover plate 5 to form the upper cover plate 5 assembly. The air ducts inside the two are connected and further extend the air duct. The welding column 14 passes through the welding hole 13 and is ultrasonically hot melt welded. After the glue on the upper part of the welding column 14 melts and deforms, it is then solidified to realize the installation connection between the instrument panel body 3 and the lower air duct 1 assembly.

[0029] A ventilation channel 18 is provided between the instrument panel body 3, the air guide plate 4 and the upper cover plate 5. A defrosting and defogging air duct 19 is provided at the top of the ventilation channel 18. Several vertical ribs 20 are fixedly connected to the inner wall of the ventilation channel 18 to serve as a separator. The ventilation channel 18 is in the shape of a narrow groove. Both sides of the inner wall of the upper cover plate 5 are provided with buckle seats 21. The surfaces of the two buckle seats 21 are engaged with buckle holes 23 by buckle buckles 22. The two buckle holes 23 are respectively opened on both sides of the top of the instrument panel body 3. Both sides of the top of the inner wall of the lower air duct 1 are provided with long ribs 10. The partition plate 2 and the long ribs 10 divide the interior of the lower air duct 1 from top to bottom into an upper cavity 11 and an assembly air duct 12.

[0030] In use, a narrow, elongated, groove-shaped ventilation channel 18 is provided on the front side of the instrument panel body 3. The instrument panel body 3 is connected to the assembly air duct 12 to form the instrument panel body 3 assembly. The internal air ducts of the two are connected. Further extending the ventilation channel 18, a narrow, elongated, groove-shaped ventilation channel 18 is provided in the middle of the air guide plate 4 and the upper cover plate 5. The upper end of the ventilation channel 18 of the upper cover plate 5 is a defrost and defogging air outlet. The air guide plate 4 and the upper cover plate 5 are connected to form the upper cover plate 5 assembly. The internal ventilation channels 18 of the two are connected. Further extending the ventilation channel 18, after the instrument panel body 3 assembly and the upper cover plate 5 assembly are further connected, the internal air ducts of the two are connected, and together they form the front defrost and defogging air duct 19.

[0031] The air guide plate 4 is a long strip-shaped hollow thin-walled structure that is wider at the top and narrower at the bottom. The partition plate 2 is a Y-shaped thin-walled structure. The lower air duct 1, partition plate 2, instrument panel body 3, air guide plate 4 and upper cover plate 5 are injection molded, which is convenient to manufacture. The connection between the lower air duct 1, partition plate 2, instrument panel body 3, air guide plate 4 and upper cover plate 5 are all glued with sponge sealing strips 17 to improve the sealing performance.

[0032] In use, after the lower air duct 1, partition 2, instrument panel body 3, air guide plate 4 and upper cover plate 5 are installed and connected, the sponge sealing strip 17 is compressed to achieve the sealing between each air duct. Each component is produced by injection molding.

[0033] In practical use, the defrosting and defogging air duct in front of the dashboard of the long-nose heavy truck of this invention has a partition 2 set in the lower air duct 1 and connected to the lower air duct 1 to form an assembly air duct 12. The lower right end of the lower air duct 1 is an offset air inlet 6 connected to the air conditioner, and the upper right end is divided into an air outlet channel by the partition 2. A narrow and elongated groove-shaped ventilation channel 18 is provided on the front side of the dashboard body 3. The dashboard body 3 is connected to the assembly air duct 12 to form the dashboard body 3 assembly. The internal air ducts of the two are connected. Further extending the ventilation channel 18, the air guide plate 4 and the middle part of the upper cover plate 5 are both provided with narrow and elongated groove-shaped ventilation channels 18. The upper end of the ventilation channel 18 on the upper cover plate 5 is a defrosting and defogging air duct. The defrost and defog air outlet, the air guide plate 4 and the upper cover plate 5 are connected to form the upper cover plate 5 assembly, and the internal ventilation channels 18 of the two are connected. Further extending the ventilation channel 18, the instrument panel body 3 assembly and the upper cover plate 5 assembly are further connected, and the internal air ducts of the two are connected to form the front defrost and defog air duct 19. The welding column 14 passes through the welding hole 13 and is ultrasonically hot-melted welded. After the glue on the upper part of the welding column 14 melts and deforms, it is then solidified to realize the installation connection between the instrument panel body 3 and the lower air duct 1 assembly. The inner wall of the ventilation channel 18 is provided with several vertical ribs 20, which divide the ventilation channel 18 into several rectangular independent small air ducts.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A defrosting and defogging air duct in front of the dashboard of a long-nose heavy truck, comprising a lower air duct (1), a partition (2), a dashboard body (3), an air guide plate (4), and an upper cover plate (5), characterized in that: The bottom end of the downdraft (1) is provided with an air inlet (6), and the top side of the downdraft (1) is provided with an installation hole (7). The surface of the installation hole (7) is connected with a boss column (9), and the boss column (9) is located in the middle of the partition (2). The top end of the downdraft (1) is provided with several welding holes (13). The surface of several welding holes (13) is hot-melt welded with welding columns (14), and several welding columns (14) are fixedly connected to the bottom end of the instrument panel body (3). The top end of the instrument panel body (3) is fitted with a guide plate (4). The top two sides of the top of the guide plate (4) are provided with snap-fit ​​holes (15). The surface of the two snap-fit ​​holes (15) is fitted with snap-fit ​​bosses (16), and the two snap-fit ​​bosses (16) are fixedly connected to the bottom end of the upper cover plate (5). A ventilation channel (18) is provided between the instrument panel body (3), the air guide plate (4) and the upper cover plate (5). A defrosting and defogging air duct (19) is opened at the top of the ventilation channel (18). Several vertical ribs (20) are fixedly connected to the inner wall of the ventilation channel (18). The ventilation channel (18) is in the shape of a narrow groove. The upper sides of the inner wall of the downdraft duct (1) are provided with long ribs (10), and the partition (2) and the long ribs (10) divide the interior of the downdraft duct (1) from top to bottom into an upper cavity (11) and an assembly duct (12). The air guide plate (4) is a long strip-shaped hollow thin-walled structure that is wider at the top and narrower at the bottom; The partition (2) has a Y-shaped thin-walled structure; The connection points between the downdraft (1), partition (2), instrument panel body (3), air guide plate (4) and upper cover plate (5) are all bonded with sponge sealing strips (17).

2. The defrosting and defogging air duct in front of the dashboard of a long-nose heavy truck according to claim 1, characterized in that: The boss column (9) is connected to the surface of the mounting hole (7) by screws (8).

3. The defrosting and defogging air duct in front of the dashboard of a long-nose heavy truck according to claim 1, characterized in that: Both sides of the inner wall of the upper cover plate (5) are provided with buckle seats (21), and the surfaces of the two buckle seats (21) are engaged with buckle holes (23) by buckle buckles (22), and the two buckle holes (23) are respectively opened on both sides of the top of the instrument panel body (3).

4. The defrosting and defogging air duct in front of the dashboard of a long-nose heavy truck according to claim 1, characterized in that: The downdraft (1), partition (2), instrument panel body (3), air guide plate (4) and top cover plate (5) are formed by injection molding.

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