Shroud device and vehicle

Abstract

This invention discloses a wind shield device and a vehicle. The wind shield device includes: a wind shield frame, a louver frame, and a plurality of louver components, all mounted on the louver frame. One end of each louver component is rotatably connected to the louver frame, and the other end is sealed to a fan bracket, on which a fan is mounted. Each louver component has an open position and a closed position. When open, the louver component expands outward in the airflow direction; when closed, it retracts inward in the airflow direction. Through the mechanically opening and closing louver components, the negative pressure when the fan is on drives the louver components to the closed position, and when the fan is off, the louver components are in the open position facing the wind. Furthermore, the opening degree of the louver components adaptively adjusts according to the oncoming wind or fan suction, achieving a dynamic match between heat dissipation requirements and wind resistance / fuel consumption.

Description

Technical Field

[0001] This invention relates to the field of windshield technology, and in particular to a windshield device and vehicle. Background Technology

[0002] The cooling system of heavy-duty commercial vehicles directly affects the engine's power, economy, and reliability.

[0003] In related technologies, heavy-duty truck cooling systems mostly use fixed air shrouds, which only serve a guiding function and cannot adjust the air intake area. When the fan is off, the air resistance is high, resulting in poor fuel economy. Some vehicles use electronically controlled active louvers or roller blinds, but these rely on motors, sensors, and controllers, leading to high failure rates under harsh operating conditions of heavy-duty trucks with high vibration, large temperature differences, and high dust and moisture levels. They also increase wiring and maintenance costs. Alternatively, there are ordinary self-closing louver structures, which are not integrated with the air shroud, resulting in poor airflow guidance, inadequate sealing, and a tendency to vibrate, resonate, and produce abnormal noises, failing to meet the requirements of heavy-duty truck use. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a wind shield device, which uses a mechanically opening and closing louver assembly. When the fan is turned on, the negative pressure drives the louver assembly to the closed position, and when the fan is turned off, the louver assembly is in the open position facing the wind. Moreover, the opening degree of the louver assembly is adaptively adjusted according to the oncoming wind or the fan suction, so as to achieve dynamic matching between heat dissipation requirements and wind resistance and fuel consumption.

[0005] The present invention further proposes a vehicle.

[0006] According to a first aspect of the present invention, a wind shield device includes: a wind shield frame, a louver frame, the louver frame being disposed on the wind shield frame; a plurality of louver assemblies, all of which are disposed on the louver frame, one end of each louver assembly being rotatably connected to the louver frame, and the other end of each louver assembly being sealed to a fan bracket, the fan bracket being provided with a fan; each louver assembly having an open position and a closed position, wherein when the louver assembly is in the open position, the louver assembly expands outward in the air intake direction, and when the louver assembly is in the closed position, the louver assembly retracts inward in the air intake direction.

[0007] According to the embodiment of the present invention, the wind shield device uses a mechanically opening and closing louver assembly to ensure that when the fan is turned on, the negative pressure drives the louver assembly to be in the closed position, and when the fan is stopped, the louver assembly is in the open position in the face of the wind. Furthermore, the opening degree of the louver assembly is adaptively adjusted according to the face wind or the fan suction, thereby achieving dynamic matching between heat dissipation requirements and wind resistance and fuel consumption.

[0008] According to some embodiments of the present invention, the wind shield device further includes: a plurality of hinge shafts, the plurality of hinge shafts being disposed on the louver frame, and the louver assembly being rotatably disposed about the hinge shafts.

[0009] According to some embodiments of the present invention, a vibration damping bushing is provided between the hinge shaft and the louver frame.

[0010] According to some embodiments of the present invention, the louver assembly includes a plurality of sub-louvers, one end of which is rotatably connected to the louver frame.

[0011] According to some embodiments of the present invention, the sub-louver is provided with a first sealing part and a second sealing part, wherein the first sealing part of one sub-louver and the second sealing part of an adjacent sub-louver are in a sealing fit.

[0012] According to some embodiments of the present invention, both the first sealing portion and the second sealing portion are sealing steps.

[0013] According to some embodiments of the present invention, the wind shield device further includes: a limiting member, the limiting member being fixed on the louver frame, the limiting member being outwardly expanded in the air inlet direction.

[0014] According to some embodiments of the present invention, the included angle between the limiting member and the horizontal direction is α, and α satisfies the relationship: 50°≤α≤60°.

[0015] According to some embodiments of the present invention, the louver assembly includes a support member connected between the fan bracket and the louver frame.

[0016] A vehicle according to a second aspect of the present invention includes the aforementioned windshield device.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of the wind shield device according to an embodiment of the present invention; Figure 2 This is a front view of the windshield device according to an embodiment of the present invention; Figure 3 This is a side view of a windproof shield device according to an embodiment of the present invention.

[0019] Figure label: 100. Wind shield device; 10. Wind shield frame; 20. Louver frame; 30. Louver assembly; 31. Sub-louver 3131; 40. Limiting component; 50. Support component; 60. Fan bracket. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0021] The following is for reference. Figures 1-3 The invention describes a windshield device 100 according to an embodiment of the invention, and also proposes a vehicle.

[0022] Referring to the figure, the wind shield device 100 of this embodiment of the invention includes a wind shield frame 10, a louver frame 20 and a plurality of louver components 30.

[0023] The fan shield frame 10 is preferably a flared, one-piece structure, with the larger opening facing the heat sink and the smaller opening surrounding the fan on the fan bracket 60, forming a concentrated airflow channel. This effectively guides airflow, reduces hot air recirculation, and improves the fan's cooling efficiency. The fan shield frame 10 can be made of reinforced nylon through one-piece injection molding or of lightweight, high-strength sheet metal. Its cross-section has a micro-arc-shaped airflow guide surface, which can further reduce wind noise generated when airflow passes through.

[0024] The louvered frame 20 is fixedly installed on the air inlet side of the wind shield frame 10 and is an integral structure with the wind shield frame 10.

[0025] Multiple louver components 30 are mounted on the louver frame 20. One end of each louver component 30 is rotatably connected to the louver frame 20, and the other end can be sealed and fitted onto the fan bracket 60. The louver component 30 has an open position and a closed position. When it is in the open position, the louver component 30 expands outward in the air intake direction; when it is in the closed position, the louver component 30 contracts inward in the air intake direction.

[0026] When the fan is not rotating, no negative pressure is generated inside the wind shield. During vehicle operation, the oncoming airflow acts on the outside of the louver assembly 30, pushing the louver assembly 30 to rotate outward and open. At this time, the air intake area increases significantly, the frontal area decreases, effectively reducing vehicle wind resistance and engine compartment temperature, delaying the fan's activation time, extending the service life of the fan and other components in the engine compartment, and saving fuel consumption.

[0027] When the engine temperature rises and the fan starts rotating to draw in air, a negative pressure zone quickly forms outside the shroud device 100, where the external atmospheric pressure is lower than the internal pressure. Under the action of this pressure difference, the louver assembly 30 overcomes the oncoming wind pressure and flips inward to close. At this time, it can effectively prevent the backflow of hot air behind the radiator, increase the effective airflow and static pressure of the fan, obtain stronger heat dissipation capacity at the same fan speed, and ensure that the engine always operates within the optimal operating temperature range.

[0028] Thus, through the mechanically opening and closing louver assembly 30, the negative pressure drives the louver assembly 30 to the closed position when the fan is turned on, and the louver assembly 30 is in the open position when the fan is stopped, and the opening degree of the louver assembly 30 is adaptively adjusted according to the oncoming wind or the fan suction, so as to achieve dynamic matching between heat dissipation requirements and wind resistance and fuel consumption.

[0029] The wind shield device 100 also includes multiple hinge shafts, which are mounted on the louver frame 20, and the louver assembly 30 is rotatably mounted around these hinge shafts. The hinge shafts are integral, continuous structures that run the entire length of the louver assembly 30, ensuring the stability and synchronization of the louver assembly 30's rotation and avoiding problems such as asynchrony and jamming that are common with segmented rotating shafts. The louver assembly 30 of this invention is entirely pneumatically driven, eliminating the need for motors, electronic control systems, or springs for reset components; the hinge shafts are freely rotating. This purely pneumatic drive method completely eliminates electrical failure points and spring fatigue failure points, resulting in a mean time between failures (MTBF) more than five times that of traditional electrically controlled louvers, making it particularly suitable for the long-term operation of heavy trucks under harsh conditions.

[0030] Furthermore, a vibration damping bushing is provided between the hinge shaft and the louver frame 20. The vibration damping bushing is made of wear-resistant damping material, preferably a modified polyurethane material with added graphite and molybdenum disulfide, which has excellent wear resistance and damping characteristics. The vibration damping bushing can effectively absorb the vibration energy generated by vehicle bumps and airflow excitation, suppress blade vibration, resonance and abnormal noise, and enable the blades to maintain smooth operation at various vehicle speeds, greatly improving the NVH performance of the entire vehicle.

[0031] In addition, refer to Figure 2 and Figure 3 As shown, the louver assembly 30 includes multiple sub-louvers 31, one end of which is rotatably connected to the louver frame 20. The air intake area of ​​the wind shield device 100 is divided into four symmetrically arranged louver assemblies 30 in the upper, lower, left, and right directions, i.e., four large louver assemblies 30. This symmetrical arrangement makes the air intake more uniform and the airflow distribution more reasonable.

[0032] Furthermore, the sub-louvers 31 are provided with a first sealing part and a second sealing part, wherein the first sealing part of one sub-louver 31 and the second sealing part of the adjacent sub-louver 31 are sealed together. This sealing structure adopts an overlapping design with an overlap of 5-8mm, which can effectively prevent hot air backflow and dust ingress, significantly improving the sealing performance of the device. When the fan is working, the good sealing performance can ensure that a stable negative pressure zone is formed inside the fan shroud, increasing the effective airflow of the fan. Under the same heat dissipation requirements, the fan speed can be reduced, thereby reducing the power consumption of the fan and the fuel consumption of the engine.

[0033] Both the first and second sealing parts are sealing steps. When the louver assembly 30 is in the closed position, the sealing steps of adjacent sub-louvers 31 overlap each other, forming a labyrinthine sealing structure. This labyrinthine sealing structure can block the passage of hot air and dust by repeatedly changing the airflow direction, and its sealing effect is far superior to that of a planar overlapping seal. Actual measurements show that after adopting the labyrinthine sealing structure, the hot air return flow is reduced, and the amount of dust entering is also reduced, effectively protecting the components in the engine compartment and extending their service life.

[0034] Reference Figure 2 and Figure 3 As shown, the wind shield device 100 also includes a limiting member 40, which is fixed to the louver frame 20 and extends outward in the air intake direction. The limiting member 40 is a rigid limiting boss, integrally injection molded with the louver frame 20, with high structural strength and not easily deformed. The limiting member 40 is used to limit the maximum opening angle of the louver assembly 30, avoiding structural damage and airflow turbulence caused by excessive opening angle of the louver assembly 30. At the same time, the limiting member 40 can also provide buffer protection for the louver assembly 30 under extreme conditions such as rapid acceleration and deceleration of the vehicle, preventing the blades from colliding with other components.

[0035] Reference Figure 3 As shown, the angle between the limiting component 40 and the horizontal direction is α, which satisfies the relationship: 50°≤α≤60°. This angle range is the optimal range obtained through extensive fluid dynamics simulations and real vehicle tests. When α is less than 50°, the air intake area is insufficient, and it cannot effectively reduce wind resistance; when α is greater than 60°, the airflow will form vortices on the back of the blades, which will increase wind resistance. Within the angle range of 50°-60°, the air intake area and wind resistance reach the optimal balance point, which can reduce the drag coefficient of the vehicle at high speeds and reduce fuel consumption.

[0036] Reference Figure 2As shown, the louver assembly 30 includes a support member 50, which connects the fan bracket 60 and the louver frame 20. The support member 50 is made of high-strength aluminum alloy, making it lightweight and high-strength. The support member 50 enhances the structural stability of the louver frame 20, preventing deformation under the combined effects of fan suction and oncoming wind pressure. Simultaneously, the support member 50 ensures a tight fit between the louver assembly 30 and the fan bracket 60 when closed, improving sealing reliability. Using the support member 50 reduces the deformation of the louver frame 20, further improving the sealing performance and service life of the device.

[0037] According to a second aspect of the present invention, a vehicle includes a windshield device 100. Due to the adoption of the aforementioned purely mechanical adaptive windshield device 100, the vehicle has advantages such as high cooling efficiency, good fuel economy, high reliability, and excellent NVH performance, making it particularly suitable for the use needs of heavy commercial vehicles under various complex operating conditions.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 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. Therefore, they should not be construed as limitations on this invention.

[0039] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0040] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wind shield device, characterized in that, include: Windshield frame, A louvered frame, wherein the louvered frame is disposed on the windproof cover frame; Multiple louver components are provided on the louver frame. One end of each louver component is rotatably connected to the louver frame, and the other end of each louver component is sealed to a fan bracket on which a fan is provided. The louver assembly has an open position and a closed position. When the louver assembly is in the open position, it expands outward in the air intake direction. When the louver assembly is in the closed position, it retracts inward in the air intake direction.

2. The windscreen device of claim 1, wherein Also includes: Multiple hinge axes are disposed on the louver frame, and the louver assembly is rotatably disposed about the hinge axes.

3. The windscreen device of claim 2, wherein, A vibration damping bushing is provided between the hinge shaft and the louver frame.

4. The windscreen device of claim 1, wherein, The louver assembly includes a plurality of sub-louvers, one end of which is rotatably connected to the louver frame.

5. The windscreen device of claim 4, wherein, The sub-louver is provided with a first sealing part and a second sealing part, wherein the first sealing part of one sub-louver and the second sealing part of the adjacent sub-louver are sealed together.

6. The windscreen device of claim 5, wherein, Both the first sealing part and the second sealing part are sealing steps.

7. The windscreen device of claim 1, wherein Also includes: A limiting member is fixed on the louver frame and extends outward in the air inlet direction.

8. The windscreen device of claim 7, wherein, The angle between the limiting component and the horizontal direction is α, and α satisfies the relationship: 50°≤α≤60°.

9. The windscreen device of claim 1, wherein, The louver assembly includes a support member connected between the fan bracket and the louver frame.

10. A vehicle, characterized in that, include: The wind shield device according to any one of claims 1-9.

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