Vehicle front structure

The vehicle front structure addresses airflow disruption by using a cover member and air guide member to reduce turbulence, improving aerodynamics and air resistance.

JP2025132281APending Publication Date: 2025-09-10TOYOTA JIDOSHA KK
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Patent Information

Application Number
JP2024029716
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-02-29
Publication Date
2025-09-10

AI Technical Summary

Technical Problem

The provision of a windshield cover over sensors like radars on vehicle front structures disrupts airflow, worsening the air resistance coefficient.

Method used

A vehicle front structure design featuring a cover member and an air guide member that covers sensors, with the air guide member extending rearward and tapering to smooth airflow, reducing turbulence.

Benefits of technology

Improves the air resistance coefficient by smoothing airflow behind the cover member, enhancing vehicle aerodynamics.

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Abstract

To provide a vehicle front structure capable of improving an air resistance coefficient.SOLUTION: A vehicle front structure 100 includes: a front bumper cover 1 having an opening 1a; and a millimeter wave radar 3a and a camera 3b which are disposed in a region corresponding to the opening 1a. The vehicle front structure 100 includes: a cover member 4 disposed on a vehicle front side relative to the millimeter wave radar 3a and the camera 3b and provided so as to cover the millimeter wave radar 3a and the camera 3b; and an air guide member 5 disposed on a vehicle rear side relative to the millimeter wave radar 3a and the camera 3b.SELECTED DRAWING: Figure 2
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Description

[Technical Field]

[0001] The present invention relates to a vehicle front structure. [Background technology]

[0002] BACKGROUND ART Conventionally, a vehicle front structure is known that includes a front bumper cover having an opening and a front grille provided in the opening (see, for example, Patent Document 1).

[0003] In the vehicle front structure of Patent Document 1, a radar for detecting obstacles ahead of the vehicle is attached to the front grille. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2023-148542 Summary of the Invention [Problem to be solved by the invention]

[0005] When a sensor such as a radar is attached to the front grille as in the conventional vehicle front structure described above, a windshield cover may be provided to cover the sensor. If a windshield cover is provided, the airflow behind the cover may be disturbed, which may worsen the air resistance coefficient.

[0006] The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a vehicle front structure that can improve the air resistance coefficient. [Means for solving the problem]

[0007] A vehicle front structure according to the present invention includes a front bumper cover having an opening, a sensor disposed in a region corresponding to the opening, a cover member disposed on the vehicle front side of the sensor so as to cover the sensor, and an air guide member disposed on the vehicle rear side of the sensor.

[0008] In the above vehicle front structure, the air guide member is formed to extend from the cover member toward the rear of the vehicle, and may be inclined so that it is positioned lower as it moves toward the rear of the vehicle when viewed from the side.

[0009] In the vehicle front structure, the air guide member may be formed so that its width decreases toward the rear of the vehicle when viewed in a plan view.

[0010] The vehicle front structure may further include a front grille provided in the opening, and the sensor may be attached to the front grille. [Effects of the Invention]

[0011] According to the vehicle front structure of the present invention, it is possible to improve the air resistance coefficient. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a schematic diagram showing a vehicle to which the vehicle front structure of the present embodiment is applied, as viewed from the front. [Figure 2] 2 is a cross-sectional view taken along the line AA in FIG. 1. [Figure 3] 2 is a cross-sectional view of FIG. 1 taken along line B-B. DETAILED DESCRIPTION OF THE INVENTION

[0013] An embodiment of the present invention will be described below.

[0014] First, a vehicle front structure 100 according to one embodiment of the present invention will be described with reference to FIGS.

[0015] As shown in Fig. 2, the vehicle front structure 100 includes a front bumper cover 1, a front grille 2, a millimeter-wave radar 3a, a camera 3b, a cover member 4, and an air guide member 5. The vehicle front structure 100 is disposed at the front end of the engine compartment. An undercover 150 is provided at the lower end of the engine compartment, and a hood 160 is provided at the upper end of the engine compartment. In each drawing, the front side of the vehicle is the X1 direction, the rear side of the vehicle is the X2 direction, and the vehicle width direction is the Y direction.

[0016] 1, the front bumper cover 1 is disposed at the front end of the vehicle and is formed to extend in the vehicle width direction. The front bumper cover 1 has an opening 1a, and the opening 1a is formed to extend in the vehicle width direction.

[0017] The front grille 2 is attached to the opening 1a and is provided so as to close the opening 1a. The front grille 2 is formed, for example, in a mesh or lattice shape, and has a plurality of openings 2a (see FIGS. 2 and 3) for allowing outside air to flow in. Note that the openings 2a are not shown in FIG. 1 for ease of viewing. Outside air is drawn into the engine compartment by the vehicle running or by a fan (not shown).

[0018] The millimeter-wave radar 3a and the camera 3b are provided to acquire information about the area ahead of the vehicle. The information acquired by the millimeter-wave radar 3a and the camera 3b is used, for example, for vehicle driving assistance. The millimeter-wave radar 3a and the camera 3b are disposed in the center of the vehicle width direction and attached to the front grille 2. Therefore, the millimeter-wave radar 3a and the camera 3b are disposed in an area corresponding to the opening 1a. The millimeter-wave radar 3a and the camera 3b are an example of a "sensor" in the present invention.

[0019] The cover member 4 is used as a windshield and is configured to protect the millimeter-wave radar 3a and the camera 3b. As shown in Figures 2 and 3, the cover member 4 is disposed on the vehicle front side relative to the millimeter-wave radar 3a and the camera 3b, and is provided to cover the millimeter-wave radar 3a and the camera 3b. The cover member 4 is configured to be transparent to millimeter waves and light.

[0020] Specifically, the cover member 4 has a front surface portion 4a, an upper surface portion 4b (see FIG. 2), and a side surface portion 4c (see FIG. 3). The front surface portion 4a is disposed further forward than the millimeter-wave radar 3a and the camera 3b and is disposed so as to intersect with the longitudinal direction of the vehicle. Therefore, when viewed from the front side of the vehicle, the front surface portion 4a is disposed in an area corresponding to the millimeter-wave radar 3a and the camera 3b. The upper surface portion 4b is formed so as to extend from an upper end portion of the front surface portion 4a toward the rear side of the vehicle. The rear end of the upper surface portion 4b is connected to the front grille 2. The side surface portion 4c is formed so as to extend from a side end portion of the front surface portion 4a toward the rear side of the vehicle. The rear end of the side surface portion 4c is connected to the front grille 2.

[0021] The air guide member 5 is provided to suppress turbulence of the airflow on the vehicle rear side of the cover member 4. In other words, the air guide member 5 is provided to smooth the airflow on the vehicle rear side of the cover member 4. The air guide member 5 is disposed on the vehicle rear side of the millimeter-wave radar 3a and the camera 3b, and is provided so as to cover the millimeter-wave radar 3a and the camera 3b. As a result, the millimeter-wave radar 3a and the camera 3b are housed in a space defined by the cover member 4 and the air guide member 5.

[0022] Specifically, the air guide member 5 is formed so as to extend from the cover member 4 toward the rear of the vehicle. An upper end portion 5a (see FIG. 2) of the air guide member 5 on the front side of the vehicle is connected to the front grille 2 and is provided so as to be continuous with an upper surface portion 4b of the cover member 4. An end portion 5b (see FIG. 2) of the air guide member 5 on the rear side of the vehicle is placed on the undercover 150. For this reason, the air guide member 5 is inclined so that it is positioned lower as it proceeds toward the rear of the vehicle when viewed from the side.

[0023] Furthermore, a side end portion 5c (see FIG. 3) of the air guide member 5 on the vehicle front side is connected to the front grille 2 and is provided so as to be continuous with the side portion 4c of the cover member 4. When viewed in a plan view, the air guide member 5 is formed so that its width becomes smaller as it goes toward the rear of the vehicle. In other words, when viewed in a plan view, the air guide member 5 is formed in a tapered shape. In other words, the side end portions of the air guide member 5 are connected on the vehicle rear side.

[0024] 2 and 3, an example of the airflow is indicated by dashed arrows. The airflow of the outside air that flows in through the opening 2a of the front grille 2 and passes around the cover member 4 is guided by the air guide member 5 so as to flow along the air guide member 5.

[0025] -effect- In this embodiment, as described above, the provision of the air guide member 5 smoothes the airflow on the vehicle rear side of the cover member 4, thereby making it possible to improve the air resistance coefficient.

[0026] Furthermore, in this embodiment, the air guide member 5 is provided so as to be inclined when viewed from the side, thereby making it possible to smooth the airflow on the vehicle rear side of the cover member 4.

[0027] In addition, in this embodiment, the air guide member 5 is formed in a tapered shape when viewed in plan, which makes it possible to smooth the airflow on the vehicle rear side of the cover member 4.

[0028] -Other embodiments- It should be noted that the embodiments disclosed herein are illustrative in all respects and are not intended to be limiting. Therefore, the technical scope of the present invention should not be interpreted solely by the above-described embodiments, but should be defined by the claims. The technical scope of the present invention also includes all modifications within the scope and meaning equivalent to the claims.

[0029] For example, in this embodiment, the vehicle front structure 100 may be applied to a low-height sports car.

[0030] In addition, in the present embodiment, an example has been shown in which the millimeter-wave radar 3a and the camera 3b are attached to the front grille 2. However, the present invention is not limited to this, and the millimeter-wave radar and the camera may be disposed on the rear side of the vehicle with respect to the front grille.

[0031] In addition, in the present embodiment, an example in which the millimeter-wave radar 3 a and the camera 3 b are provided has been shown. However, the present invention is not limited to this, and only one of the millimeter-wave radar and the camera may be provided, or a sensor other than the millimeter-wave radar and the camera may be provided. For example, a LiDAR sensor may be provided instead of or in addition to the millimeter-wave radar. [Industrial Applicability]

[0032] The present invention is applicable to a vehicle front structure including a front bumper cover having an opening and a sensor disposed in an area corresponding to the opening. [Explanation of symbols]

[0033] 1 Front bumper cover 2 Front grille 3a Millimeter wave radar (sensor) 3b Camera (sensor) 4 Cover member 5. Air guide member 100 Vehicle front structure

Claims

1. a front bumper cover having an opening; A vehicle front structure including a sensor disposed in an area corresponding to the opening, a cover member disposed on the front side of the vehicle with respect to the sensor and provided to cover the sensor; A vehicle front structure comprising: a wind guide member disposed rearward of the sensor.

2. The vehicle front structure according to claim 1, The air guide member is formed to extend from the cover member toward the rear of the vehicle, and is inclined so that it is positioned lower as it moves toward the rear of the vehicle when viewed from the side.

3. The vehicle front structure according to claim 1 or 2, The vehicle front structure, wherein the air guide member is formed so that its width decreases toward the rear of the vehicle when viewed in a plan view.

4. The vehicle front structure according to claim 1 or 2, a front grill provided in the opening, The vehicle front structure is characterized in that the sensor is attached to the front grille.

Citation Information

Patent Citations

  • Vehicle front structure

    JP2023148542A