Commercial vehicle sun visor rear spoiler structure, cab assembly and commercial vehicle
By adding a serrated anti-turbulence device to the rear end of the sun visor of commercial vehicles, the problem of airflow turbulence was solved, and the aerodynamic performance and stability of the whole vehicle were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FAW JIEFANG AUTOMOTIVE CO
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-03
AI Technical Summary
The airflow turbulence at the outer rear end of the sun visor of commercial vehicles leads to increased pressure drag and aerodynamic noise, affecting fuel economy and driving stability.
A serrated anti-turbulence device is added to the tail end of the sunshade, mimicking the shape of bird feathers to reduce turbulence and maintain the integrity of the flow field.
By reducing airflow turbulence at the tail end through a serrated structure, the aerodynamic performance of the entire vehicle is improved, pressure drag and aerodynamic noise are reduced, and fuel economy and driving stability are enhanced.
Smart Images
Figure CN224447939U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of commercial vehicle exterior technology, and in particular to the rear spoiler structure on the outer side of the sun visor of a commercial vehicle, the cab assembly, and the commercial vehicle. Background Technology
[0002] As an important exterior component on the top of the cab, the sun visor of a commercial vehicle directly affects the vehicle's fuel economy and driving stability due to its aerodynamic performance.
[0003] The airflow turbulence problem at the outer rear end of the sun visor of a commercial vehicle originates from fluid separation. When high-speed airflow passes through the rear end of the sun visor, due to the abrupt change in geometry and the effect of the adverse pressure gradient, the airflow is prone to separate from the surface of the visor, forming a large-scale turbulent vortex structure. This flow separation not only increases the pressure drag of the entire vehicle, but also interferes with the airflow field of the cargo box or trailer behind, generating aerodynamic noise and further deteriorating the aerodynamic performance of the entire vehicle.
[0004] Existing sunshade designs primarily focus on sunshade functionality, with less consideration given to aerodynamic characteristics. The tail ends are often right angles or simple rounded transitions, leading to severe airflow separation. Utility Model Content
[0005] To address the aforementioned issues, this utility model provides a rear-end turbulence structure for the outer side of a commercial vehicle sun visor. A serrated structure is added to the rear of the sun visor to reduce airflow turbulence at the rear end and maintain the integrity of the flow field at the rear end.
[0006] This utility model proposes a rear-end turbulence structure for the outer side of a commercial vehicle sun visor. The commercial vehicle sun visor is generally in the shape of a horizontal U-shape. Each outer rear end of the U-shaped commercial vehicle sun visor is provided with an anti-turbulence device. The anti-turbulence device is a serrated structure set on the end face of the outer rear end of the commercial vehicle sun visor. Adding a serrated structure to the rear end of the sun visor can reduce the occurrence of airflow turbulence at the rear end and maintain the integrity of the flow field at the rear end.
[0007] The sawtooth structure of the anti-turbulence device includes several continuously arranged sawtooths. The angle bisector of the tip of each sawtooth is parallel to the horizontal plane, and the two adjacent sawtooths form a V-shaped angle structure. The angle bisector of this V-shaped angle structure is also parallel to the horizontal plane to maintain the stability of the airflow direction.
[0008] Each serrated structure, viewed from above, resembles a fish head knife. Specifically, the front end of the serration on the inner sidewall of the outer rear end of the commercial vehicle sun visor is a triangular planar structure, while the front end of the same serration on the outer sidewall of the outer rear end of the commercial vehicle sun visor is a rounded transition surface structure. The triangular planar structure is similar to the blade of a fish head knife, and the rounded transition surface structure is similar to the back of a fish head knife. The serrated structure of the anti-turbulence device mimics the shape of bird feathers, which can reduce the occurrence of airflow turbulence at the rear end and maintain the integrity of the flow field at the rear end.
[0009] The anti-turbulence device is located on the upper middle part of each outer rear end face of the commercial vehicle sun visor and / or the lower middle part of each outer rear end face of the commercial vehicle sun visor.
[0010] The lower part of the outer rear end face of each commercial vehicle sun visor has a rounded chamfer.
[0011] The anti-turbulence device is located from the middle of the outer rear end face of the commercial vehicle sun visor to the upper part of the outer rear end face of the commercial vehicle sun visor on the same side, and the spacing between the tips of adjacent teeth of the several continuously arranged sawtooth structures of the anti-turbulence device is the same; or, the anti-turbulence device is located from the middle of the outer rear end face of the commercial vehicle sun visor to the upper part of the rounded chamfer of the outer rear end face of the commercial vehicle sun visor on the same side, and the spacing between the tips of adjacent teeth of the several continuously arranged sawtooth structures of the anti-turbulence device is the same.
[0012] The anti-turbulence device is located on the upper part of the outer rear end face of the commercial vehicle sun visor to the upper part of the rounded chamfer of the outer rear end face of the commercial vehicle sun visor on the same side. The spacing between the tips of two adjacent saw teeth of the several continuously arranged sawtooth structures of the anti-turbulence device increases from the middle part to the upper and lower ends respectively. That is, the spacing between two adjacent saw teeth tips in the middle part is smaller than the spacing between two adjacent saw teeth tips in the upper part, and the spacing between two adjacent saw teeth tips in the middle part is smaller than the spacing between two adjacent saw teeth tips in the upper part of the rounded chamfer at the bottom.
[0013] The angle range of the V-shaped angle structure formed between two adjacent saw teeth is 8°-15°.
[0014] The commercial vehicle cab assembly includes cab sheet metal and a windshield, and also includes the aforementioned commercial vehicle sun visor outer rear end spoiler structure, which is mounted and fixed on the cab sheet metal above the windshield.
[0015] Commercial vehicle, including the aforementioned commercial vehicle cab assembly.
[0016] Beneficial effects
[0017] This invention adds a serrated structure to the tail of the sunshade to reduce airflow turbulence at the tail end and maintain the integrity of the flow field at the tail end. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0019] Figure 2 This is a partially enlarged structural diagram of the outer tail end of this utility model.
[0020] Figure 3 This is a schematic diagram of the side structure of this practical instrument.
[0021] Figure 4 yes Figure 3 A schematic diagram of the AA-direction cross-section structure.
[0022] Figure 5 yes Figure 4 A partially enlarged structural diagram.
[0023] Figure 6 This is a schematic diagram of the serrated three-dimensional structure of this utility model. Figure 1 .
[0024] Figure 7 This is a schematic diagram of the serrated three-dimensional structure of this utility model. Figure 2 .
[0025] Figure 8 This is a schematic diagram of the commercial vehicle cab assembly structure of this utility model.
[0026] In the picture:
[0027] 1. Commercial vehicle sun visor; 11. Anti-turbulence device; 111. Serrated edge; 12. Rounded chamfer;
[0028] 2. Cab sheet metal work;
[0029] 3. Front windshield. Detailed Implementation
[0030] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.
[0031] 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., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Specifically, the terms "first position" and "second position" refer to two different positions.
[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections 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.
[0033] Example 1
[0034] See Figures 1-4 As shown, the commercial vehicle sun visor outer rear end spoiler structure includes a commercial vehicle sun visor 1. The commercial vehicle sun visor 1 is generally in the shape of a horizontal U-shape. Each outer rear end of the U-shaped commercial vehicle sun visor 1 is provided with an anti-airflow turbulence device 11. The anti-airflow turbulence device 11 is a serrated structure set on the end face of the outer rear end of the commercial vehicle sun visor 1.
[0035] The sawtooth structure of the anti-turbulence device 11 includes fifty-nine consecutively arranged sawtooths 111. The angle bisector of the tip of each sawtooth is parallel to the horizontal plane, and the two adjacent sawtooths 111 form a V-shaped angle structure. The angle bisector of the V-shaped angle structure is also parallel to the horizontal plane.
[0036] The serration 111 has a triangular structure when viewed from the side.
[0037] The anti-turbulence device 11 is located from the middle of the outer rear end face of the commercial vehicle sun visor 1 to the upper part of the outer rear end face of the commercial vehicle sun visor 1 on the same side, and the spacing between the tips of the adjacent teeth 111 of the continuously arranged sawtooth structure of the anti-turbulence device 11 is the same.
[0038] The angle of the V-shaped angle structure formed between two adjacent saw teeth 111 is 12°.
[0039] Example 2
[0040] See Figures 1-7 As shown, the commercial vehicle sun visor outer rear end spoiler structure includes a commercial vehicle sun visor 1. The commercial vehicle sun visor 1 is generally in the shape of a horizontal U-shape. Each outer rear end of the U-shaped commercial vehicle sun visor 1 is provided with an anti-airflow turbulence device 11. The anti-airflow turbulence device 11 is a serrated structure set on the end face of the outer rear end of the commercial vehicle sun visor 1.
[0041] The sawtooth structure of the anti-turbulence device 11 includes fifty-nine consecutively arranged sawtooths 111. The angle bisector of the tip of each sawtooth is parallel to the horizontal plane, and the two adjacent sawtooths 111 form a V-shaped angle structure. The angle bisector of the V-shaped angle structure is also parallel to the horizontal plane.
[0042] Each serration 111 has a fish head knife structure when viewed from above. Specifically, the front end of the serration 111 on the inner side wall of the outer rear end of the commercial vehicle sun visor 1 is a triangular planar structure, and the front end of the same serration 111 on the outer side wall of the outer rear end of the commercial vehicle sun visor 1 is a rounded transition surface structure.
[0043] The lower part of each outer rear end face of the commercial vehicle sunshade 1 is provided with a rounded chamfer 12.
[0044] The anti-turbulence device 11 is located from the middle of the outer rear end face of the commercial vehicle sun visor 1 to the upper part of the arc chamfer 12 of the outer rear end face of the commercial vehicle sun visor 1 on the same side, and the spacing between the tips of the adjacent serrations 111 of the continuously arranged serration structure of the anti-turbulence device 11 is the same.
[0045] The angle of the V-shaped angle structure formed between two adjacent saw teeth 111 is 8°.
[0046] Example 3
[0047] See Figures 1-7 As shown, the commercial vehicle sun visor outer rear end spoiler structure includes a commercial vehicle sun visor 1. The commercial vehicle sun visor 1 is generally in the shape of a horizontal U-shape. Each outer rear end of the U-shaped commercial vehicle sun visor 1 is provided with an anti-airflow turbulence device 11. The anti-airflow turbulence device 11 is a serrated structure set on the end face of the outer rear end of the commercial vehicle sun visor 1.
[0048] The sawtooth structure of the anti-turbulence device 11 includes fifty-nine consecutively arranged sawtooths 111. The angle bisector of the tip of each sawtooth is parallel to the horizontal plane, and the two adjacent sawtooths 111 form a V-shaped angle structure. The angle bisector of the V-shaped angle structure is also parallel to the horizontal plane.
[0049] Each serration 111 has a fish head knife structure when viewed from above. Specifically, the front end of the serration 111 on the inner side wall of the outer rear end of the commercial vehicle sun visor 1 is a triangular planar structure, and the front end of the same serration 111 on the outer side wall of the outer rear end of the commercial vehicle sun visor 1 is a rounded transition surface structure.
[0050] The lower part of each outer rear end face of the commercial vehicle sunshade 1 is provided with a rounded chamfer 12.
[0051] The anti-turbulence device 11 is located on the upper part of the outer rear end face of the commercial vehicle sun visor 1 to the upper part of the arc chamfer 12 on the same side of the outer rear end face of the commercial vehicle sun visor 1. The distance between the tips of the two adjacent saw teeth 111 of the continuously arranged sawtooth structure of the anti-turbulence device 11 increases from the middle part to the upper and lower ends respectively. That is, the distance between the tips of the two adjacent saw teeth 111 in the middle part is smaller than the distance between the tips of the two adjacent saw teeth 111 in the upper part, and the distance between the tips of the two adjacent saw teeth 111 in the middle part is smaller than the distance between the tips of the two adjacent saw teeth 111 in the upper part of the arc chamfer 12 in the lower part.
[0052] The angle of the V-shaped angle structure formed between two adjacent saw teeth 111 is 15°.
[0053] Example 4
[0054] See Figure 8 As shown, the commercial vehicle cab assembly includes a cab sheet metal 2 and a windshield 3, and also includes the rear spoiler structure on the outer side of the commercial vehicle sun visor 1, which is mounted and fixed on the cab sheet metal 2 above the windshield 3.
[0055] Example 5
[0056] Commercial vehicle, including the aforementioned commercial vehicle cab assembly.
[0057] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.
Claims
1. A commercial vehicle sunroof outer side tail end spoiler structure, comprising a commercial vehicle sunroof (1), the commercial vehicle sunroof (1) is in a whole transverse U-shaped structure, characterized in that: The U-shaped commercial vehicle sunshade (1) is provided with an anti-turbulence device (11) at each outer tail end. The anti-turbulence device (11) is a serrated structure set on the outer tail end face of the commercial vehicle sunshade (1).
2. The commercial vehicle visor outboard tail end spoiler structure of claim 1, characterized by: The sawtooth structure of the anti-turbulence device (11) includes several continuously arranged sawtooths (111), the angle bisector of the tip of each sawtooth is parallel to the horizontal plane, and the two adjacent sawtooths (111) form a V-shaped angle structure, the angle bisector of the V-shaped angle structure is also parallel to the horizontal plane.
3. The commercial vehicle visor outboard tail end spoiler structure of claim 2, characterized by: Each sawtooth (111) has a fish head knife structure when viewed from above. Specifically, the front end of the sawtooth (111) on the inner side wall of the outer rear end of the commercial vehicle sunshade (1) is a triangular plane structure, and the front end of the same sawtooth (111) on the outer side wall of the outer rear end of the commercial vehicle sunshade (1) is a rounded transition surface structure.
4. The commercial vehicle visor outboard tail end spoiler structure of claim 1, characterized by: The anti-turbulence device (11) is located on the upper middle part of each outer rear end face of the commercial vehicle sunshade (1) and / or the lower middle part of each outer rear end face of the commercial vehicle sunshade (1).
5. The commercial vehicle visor outboard tail spoiler structure of any of claims 2-4, characterized by: Commercial vehicle sunshade (1) has a rounded chamfer (12) on the lower part of each outer rear end face.
6. The commercial vehicle visor outboard tail end spoiler structure of claim 5, characterized by: The anti-turbulence device (11) is located from the middle of the outer rear end face of the commercial vehicle sun visor (1) to the upper part of the outer rear end face of the commercial vehicle sun visor (1) on the same side, and the spacing between the tips of the adjacent teeth (111) of the several continuously arranged sawtooth structures of the anti-turbulence device (11) is the same; or, the anti-turbulence device (11) is located from the middle of the outer rear end face of the commercial vehicle sun visor (1) to the upper part of the rounded chamfer (12) of the outer rear end face of the commercial vehicle sun visor (1) on the same side, and the spacing between the tips of the adjacent teeth (111) of the several continuously arranged sawtooth structures of the anti-turbulence device (11) is the same.
7. The commercial vehicle visor outboard tail end spoiler structure of claim 5, characterized by: The anti-turbulence device (11) is located on the upper part of the outer rear end face of the commercial vehicle sunshade (1) to the upper part of the arc chamfer (12) of the outer rear end face of the commercial vehicle sunshade (1) on the same side. The distance between the tips of the two adjacent saw teeth (111) of the several continuously arranged saw teeth structure of the anti-turbulence device (11) increases from the middle part to the upper and lower ends respectively. That is, the distance between the tips of the two adjacent saw teeth (111) in the middle part is smaller than the distance between the tips of the two adjacent saw teeth (111) in the upper part, and the distance between the tips of the two adjacent saw teeth (111) in the middle part is smaller than the distance between the tips of the two adjacent saw teeth (111) in the upper part of the arc chamfer (12) in the lower part.
8. The commercial vehicle visor outboard tail end spoiler structure of claim 2, characterized by: The angle range of the V-shaped angle structure formed between two adjacent saw teeth (111) is 8°-15°.
9. Cab assembly for a commercial vehicle comprising a cab sheet metal (2) and a front windshield (3), characterized in that: It also includes a rear spoiler structure on the outer side of the commercial vehicle sun visor as described in any one of claims 1-8, wherein the rear spoiler structure on the outer side of the commercial vehicle sun visor (1) is mounted and fixed on the cab sheet metal (2) above the windshield (3).
10. A commercial vehicle characterised by: Includes the commercial vehicle cab assembly as described in claim 9.