Wind deflector structure and vehicle body assembly having the same

Abstract

The utility model relates to the field of automobile manufacturing, specifically a wind deflector plate structure and a vehicle body assembly with the wind deflector plate structure, comprising an upper plate body and a lower plate body, wherein the strength of the upper plate body is greater than that of the lower plate body; the lower plate body has ductility; the utility model ensures that the wind deflector plate is not easily deformed under high-speed driving conditions of the automobile through the design of different strengths of the upper plate body and the lower plate body, thereby achieving the effect of reducing wind resistance and preventing the automobile from being easily damaged when passing through harsh roads such as uneven roads and stones; the utility model is a double-material structure wind deflector plate that can not only guide the airflow in front of the tire to avoid the airflow directly impacting the tire, but also prevent fragmentation and damage; it has an excellent use effect.

Description

Technical Field

[0001] The utility model relates to the field of automobile manufacturing, in particular to a wind deflector plate structure and a vehicle body assembly having the wind deflector plate structure. Background Art

[0002] Cars are subject to different types of resistance during driving, including air resistance, rolling resistance, acceleration resistance, and ramp resistance. Among them, air resistance (hereinafter referred to as wind resistance) accounts for more than 65% during high-speed driving. Therefore, for new energy vehicles, reducing wind resistance is one of the key areas of focus in automobile research and development. As for the tire wind resistance plate, which is an effective wind resistance reduction solution, it is one of the most economical and effective measures in the automotive engineering development stage; according to the simulation analysis of different types of wind resistance plates for different models, the wind resistance reduction effect can reach 8 count to 12 count. However, the structures and shapes of wind resistance plates on the market are different, and the wind resistance reduction effects are also quite different.

[0003] Through investigation, it is found that there are three types of car wind deflectors on the market: one is the ordinary flat wind deflector, which has a simple installation structure and is easy to implement, but is easily damaged when passing through potholes or gravel roads. The other is a three-dimensional wind deflector, which is a three-dimensional deformed curved surface fixed on the wheel cover or front bumper along the trend of the front bumper. The structural design of this type of wind deflector is relatively complex and is limited to shielding the front wheels. In addition, this type of wind deflector has a slightly poor coverage of the tire and a slightly poor wind resistance reduction effect. Since this type of structure is not easy to use rubber materials, it is more likely to crack when passing through potholes or gravel roads. Another type is a combination of a variable wind deflector and a wind deflector, that is, it includes a structure integrated in the front fender (front wheel wind deflector) or side skirt (rear wheel wind deflector), and a flat wind deflector or a three-dimensional wind deflector structure fixed thereto; this type of wind deflector has better coverage of both sides of the tire, but the design is relatively complex and the cost is high; if only a variable wind deflector is used, the area covered by the tire is insufficient, resulting in a large positive pressure area of ​​the tire, and the airflow directly hits the tire and flows into the wheel cavity, causing increased air resistance.

[0004] In order to solve the problem of easy breakage and damage of ordinary flat wind deflectors and the coverage of three-dimensional wind deflectors, the utility model patent provides a dual-material structure wind deflector that can not only guide the airflow in front of the tire to prevent the airflow from directly impacting the tire, but also prevent breakage and damage. The wind deflector makes full use of the characteristics of the material and effectively combines different materials to ensure that the wind deflector is not easily deformed under high-speed driving conditions of the car, which has the effect of reducing wind resistance and can prevent the car from being damaged when passing through harsh roads such as uneven roads and stones. The utility model is a deflector that takes into account both wind resistance reduction and roadblock avoidance.

[0005] Through patent search, it was found that there are three patents related to this utility model patent.

[0006] Patent 1-Patent No.: CN102582695A (Patent Name: A front tire deflector for reducing wind resistance), the tire deflector (engine guard, front tire baffle connected to the engine guard, and front tire cover connected to the front tire baffle) is an integrally formed part, the main function of which is to reduce the flow resistance in the cabin, change the direction of the wind in front of the tire, and thus reduce the wind resistance coefficient of the whole vehicle. However, the main purpose of this patent is to dredge the airflow at the bottom of the front and the airflow in front of the tire to reduce the wind resistance coefficient, and it does not involve the function of preventing the wind deflector from deformation, fragmentation and damage.

[0007] Patent 2 - Patent number: CN107323543A (Patent name: A retractable car wind deflector), the wind deflector includes a wind deflector, a motor, a lead screw, a packaging cover and a lead screw nut seat, and the height of the wind deflector is adjusted by the operation of the motor, thereby changing the drag coefficient. The wind deflector has a complex structure, involving the control logic and calibration strategy adjustment of the motor and the whole vehicle, and has a long development cycle and high development cost.

[0008] Patent 3 - Patent No.: CN111377000B (Patent Name: Front deflector), the front deflector includes an air inlet, a guide portion, and an air outlet, and its main function is to minimize the airflow generated when the vehicle is moving forward from contacting the front wheel. The deflector can reduce part of the airflow flowing to the tire, but the air outlet is set to discharge through the deflector cavity structure, which cannot prevent the front airflow from flowing out through the air inlet and hitting the inside of the tire; at the same time, this patent does not involve the function of preventing the wind deflector from deformation, fragmentation and damage.

[0009] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the design of the existing wind blocking plate structure. Utility Model Content

[0010] The utility model aims to provide a novel wind-blocking plate structure which has both structural strength and a long service life.

[0011] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0012] A wind blocking plate structure comprises an upper plate body and a lower plate body, wherein the strength of the upper plate body is greater than that of the lower plate body; and the lower plate body has ductility.

[0013] The upper plate body comprises an upper connecting plate and a lower connecting plate, wherein the upper connecting plate and the lower connecting plate are arranged to intersect each other; and the upper connecting plate is connected to the lower plate body through the lower connecting plate.

[0014] The upper plate body is made of thermoplastic resin material; the lower plate body is made of EPDM rubber.

[0015] A reinforcing rib is provided at the connection between the upper connecting plate and the lower connecting plate.

[0016] The upper plate body is provided with a mounting hole.

[0017] A vehicle body assembly comprises a front wheel cover and a rear wheel cover; the wind deflector structure is arranged at one end of the front wheel cover and the rear wheel cover close to the front of the vehicle.

[0018] The advantages of the utility model are:

[0019] The utility model discloses a wind blocker structure and a vehicle body assembly having the wind blocker structure.

[0020] The utility model is designed with different strengths for the upper plate and the lower plate, so that the wind deflector is not easily deformed when the car is running at high speed, which has the effect of reducing wind resistance, and can prevent the car from being damaged when passing through harsh roads such as bumps and stones. The utility model is a double-material structure wind deflector that can not only guide the airflow in front of the tire to avoid the airflow directly impacting the tire, but also prevent it from being broken and damaged. It has an excellent use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following is a brief description of the contents expressed in each of the drawings of the utility model specification and the marks in the drawings:

[0022] Figure 1 It is a schematic structural diagram of the front wheel wind deflector in the utility model.

[0023] Figure 2 This is a schematic structural diagram of the rear wheel wind deflector of the utility model from a first perspective.

[0024] Figure 3 This is a schematic structural diagram of the rear wheel wind deflector of the utility model from a first perspective.

[0025] Figure 4 The utility model is a schematic structural diagram of the wind deflector when it is installed on the front wheel cover.

[0026] Figure 5 The utility model is a schematic structural diagram of the wind deflector when it is installed on the rear wheel cover.

[0027] The marks in the above figure are:

[0028] 1-1, wind blocking plate, 1, upper plate body, 2, lower plate body, 3 reinforcing ribs. DETAILED DESCRIPTION

[0029] The specific implementation methods of the present utility model will be further explained in detail below by describing the optimal embodiments with reference to the accompanying drawings.

[0030] A wind deflector 1-1 comprises an upper plate body 1 and a lower plate body 2, wherein the upper plate body 1 is stronger than the lower plate body 2; the lower plate body 2 is ductile; the utility model ensures that the wind deflector is not easily deformed under high-speed driving conditions of the automobile through the design of different strengths of the upper plate body 1 and the lower plate body 2, thereby achieving the effect of reducing wind resistance and preventing the automobile from being easily damaged when passing through harsh roads such as uneven roads and stones; the utility model is a double-material structure wind deflector that can not only guide the airflow in front of the tire to avoid the airflow directly impacting the tire, but also prevent it from being broken and damaged; it has an excellent use effect.

[0031] The utility model discloses a wind deflector 1-1, which mainly comprises an upper plate body 1 and a lower plate body 2, wherein the upper plate body 1 has a strength greater than that of the lower plate body 2; the lower plate body 2 has ductility; during actual installation, the upper plate body 1 is connected to the vehicle body, and the lower plate body 2 is connected to the vehicle body through the upper plate body 1. In the utility model, it is required that the strength difference between the two is the basis, and the essence is to require the lower plate body 2 to have a certain ductility, that is, the lower plate body 2 has a certain deformation ability, and when a subsequent collision occurs, it will not have a rigid collision with the collided object, thereby reducing the damage probability of the lower plate body 2; and extending the service life of the wind deflector.

[0032] Furthermore, in the utility model, the upper plate body 1 includes an upper connecting plate 11 and a lower connecting plate 12, and the upper connecting plate 11 and the lower connecting plate 12 are arranged to intersect each other; the upper connecting plate 11 is connected to the lower plate body 2 through the lower connecting plate 12; based on such a setting, the upper plate body 1 disclosed in the utility model is an inverted L-shaped plate structure, the upper connecting plate 11 is used to connect with the wheel cover, and the lower connecting plate 12 plays a good bridging role; it facilitates the connection between the upper plate body 1 and the lower plate body 2.

[0033] In the present invention, there are various ways to connect the upper plate body 1 and the lower plate body 2. Essentially, any way that can achieve the connection between the two can be used in the present invention.

[0034] The upper plate body 1 and the lower plate body 2 can be connected in four ways, suitable for the development requirements of different vehicle models.

[0035] Connection method 1: Use plasma method to polarize and modify the surface of thermoplastic plastics; Connection method 2: Use self-adhesive silicone rubber and thermoplastic plastics for mold vulcanization treatment; Connection method 3: Chemically modify the thermoplastic resin to laminate and connect the silicone rubber and thermoplastic resin materials; Connection method 4: Fixed connection by rivets.

[0036] The utility model mostly adopts connection method three, so that the two materials can be better combined.

[0037] Furthermore, in the utility model, the upper plate body 1 is a thermoplastic resin material; the lower plate body 2 is EPDM rubber; based on the above design, the wind deflector 1-1 disclosed in the utility model is equivalent to being composed of two materials, the upper part is a thermoplastic material (including an excessive chamfer R=30mm), which has good rigidity and scratch resistance, and can prevent the tire wind deflector from being hit and causing stress concentration damage when the vehicle passes over a bumpy road surface; the lower part is made of EPDM rubber, which has a certain toughness while guiding the airflow; the two materials are chemically modified by thermoplastic resin to laminate and connect the silicone rubber and thermoplastic resin materials; the dual-material cross structure of the utility model makes full use of the material properties, has a simple structure that is not easy to deform, has a certain toughness and is not easy to break and damage, and is suitable for installation and matching of different models.

[0038] Furthermore, in the present invention, reinforcing ribs 3 are provided at the connection between the upper connecting plate 11 and the lower connecting plate 12; the provision of the reinforcing ribs 3 increases the structural strength of the upper plate body 1 itself to a certain extent, thereby ensuring the structural strength of the upper part of the wind blocking plate.

[0039] Furthermore, in the utility model, a mounting hole 13 is provided on the upper plate body 1; the provision of the mounting hole 13 facilitates the subsequent installation and assembly of the wind deflector 1 - 1 on the wheel cover.

[0040] A vehicle body assembly comprises a front wheel cover 1-2 and a rear wheel cover 1-4; the front wheel cover 1-2 and the rear wheel cover 1-4 are provided with the deflector plate 1-1 near one end of the front of the vehicle; the deflector plate 1-1 disclosed in the utility model is located in front of the tire, and its main function is to guide the airflow in front of the tire, minimize the direct impact of the airflow on the windward surface of the tire, reduce the turbulent kinetic energy at the tire, and thus reduce air resistance, reduce the power consumption level of new energy electric vehicles, and improve the driving range; wherein, the deflector plate 1-1 arranged in front of the front wheel 1-3 is fixed to the front wheel cover 1-2 by 3 rivets, and the front wheel cover 1-2 is fixed to the front bumper by 5 rivets; the deflector plate arranged in front of the rear wheel 1-5 is fixed to the rear wheel cover 1-4 by 2 rivets.

[0041] The specific embodiments are as follows:

[0042] The wind deflector 1-1 disclosed in the present invention is divided into a front wheel wind deflector and a rear wheel wind deflector according to different setting positions, and essentially has local differences in size and specific shape; they are essentially the same.

[0043] The wind deflector 1-1 disclosed in the utility model is equivalent to a double-material cross structure, which can fully utilize the strength of thermoplastic materials and the toughness of rubber materials, ensuring that the wind deflector can guide the airflow in front of the tire to avoid the airflow directly impacting the tire, while also preventing it from being broken and damaged.

[0044] The structural dimensions of this utility model are as follows:

[0045] Double-material structure front wheel wind deflector (width × average height × thickness: 295mm × 50mm × 2mm), reinforcement rib 3 (X-axis length 20mm, height 25mm, thickness 2mm, chamfer radius r = 1mm, corresponding angle 84.4°), flange structure (length × width: 295mm × 60mm), fixing holes (all holes radius r = 4mm).

[0046] Rear wheel wind deflector (width × average height × thickness: 182mm × 33mm × 2mm), reinforcement rib 3 (X-axis length 17mm, height 25mm, thickness 2mm, chamfer radius r = 3mm, corresponding angle 96.5°), flange structure (length × width: 182mm × 34mm), fixing holes (small hole radius r = 2mm, large hole radius r = 5mm).

[0047] The specific implementation scheme of the utility model is as follows: the front wheel wind deflector is installed in front of the front wheel 1-3 tire, and shares the installation point with the front wheel cover 1-2 and the front bumper.

[0048] The rear wheel wind deflector is installed in front of the rear wheel 1-5 tire, and shares the same mounting point with the rear wheel cover 1-4, so it can be suitable for installation and matching of different types of vehicles.

[0049] The utility model is located in front of the tire, and its main function is to guide the airflow in front of the tire, minimize the direct impact of the airflow on the windward side of the tire, reduce the turbulent kinetic energy at the tire, and then reduce air resistance, reduce the power consumption level of new energy electric vehicles, and improve the driving range; wherein, the front wheel wind stop plate is fixed to the front wheel cover 1-2 by 3 rivets, and the front wheel cover 1-2 is fixed to the front bumper by 5 rivets; the rear wheel wind stop plate is fixed to the rear wheel cover 1-4 by 2 rivets.

[0050] The double-material structure wind deflector disclosed by the utility model is composed of two materials. The upper part is a thermoplastic material (including an excessive chamfer R=30mm), which has good rigidity and scratch resistance. When a vehicle passes through a bumpy road surface, the tire wind deflector is prevented from being damaged by stress concentration caused by impact; the lower part is made of EPDM rubber material, which has a certain toughness while guiding the airflow; the two materials are chemically modified by thermoplastic resin to laminate and connect the silicone rubber and thermoplastic resin materials.

[0051] The double-material cross structure of the utility model fully utilizes the material characteristics, has a simple structure and is not easy to deform, has a certain toughness and is not easy to break and damage, and is suitable for installation and matching of different vehicle models.

[0052] The wind blocker 1-1 disclosed in the utility model can not only guide the airflow in front of the tire to avoid the airflow directly impacting the tire, but also take into account the dual-material structure wind blocker that prevents breakage and damage.

[0053] Meanwhile, in the present invention, the material of the upper plate body 1 is PP resin (a polypropylene resin, a crystalline material). Due to its high crystallinity, the surface rigidity and scratch resistance are good, and it is used for the installation and fixing structure of the present invention.

[0054] The material of the lower plate body 2 is EPDM rubber (ethylene-propylene rubber, a non-conjugated diene copolymer), which is relatively soft and has a certain toughness, and is used for the shaping structure of the lower part of the utility model for guiding the airflow.

[0055] The above two materials can be connected in four ways, which are suitable for the development needs of different models. Connection method 1: polarization modification of the surface of thermoplastic plastic by plasma method; connection method 2: self-adhesive silicone rubber and thermoplastic plastic are molded and vulcanized; connection method 3: chemical modification of thermoplastic resin to make the silicone rubber and thermoplastic resin material laminated and connected; connection method 4: fixed connection by rivets. The utility model adopts connection method 3, so that the two materials can be better combined.

[0056] Utility model principle:

[0057] The air resistance coefficient Cd is a standard for considering the air resistance of a car. According to the formula Fw = 1 / 2*Cd*A*ρ*Ur 2 (A is the positive frontal area, ρ is the air density, and Ur is the relative speed). Under other conditions, the lower the drag coefficient, the smaller the air resistance. Tests show that for every 10% reduction in the air resistance coefficient, the cruising range can be increased by about 3%. The utility model is based on the principle of reducing the wind resistance by reducing the drag coefficient and thus reducing the wind resistance, and provides a measure to reduce the wind resistance by reducing the air resistance at the tire (i.e., by guiding the airflow at the tire).

[0058] Beneficial effects:

[0059] Through simulation analysis of two models, the wind resistance plate can effectively reduce wind resistance by 8 count and 12 count respectively. Under the same conditions, the vehicle can increase the range by about 4.8km and 8.4km respectively without increasing the power and weight, which is equivalent to reducing the power by about 0.48kWh and 0.96kWh respectively. Based on 1,000 yuan per kilowatt-hour, the cost of a single vehicle can be reduced by about 480 yuan and 960 yuan respectively; based on an annual sales volume of 50,000 vehicles, the cost can be reduced by 24 million yuan and 48 million yuan respectively each year, which is a simple and efficient cost reduction and efficiency improvement measure.

[0060] The utility model patent makes full use of the characteristics of materials and effectively combines different materials to ensure that the wind deflector is not easily deformed when the car is driving at high speed, thereby reducing the wind resistance and preventing the car from being damaged when passing through harsh roads such as bumps and stones. It is a double-material structure wind deflector that can not only guide the airflow in front of the tire to avoid direct impact of the airflow on the tire, but also prevent damage due to fragmentation.

[0061] The wind deflector disclosed by the utility model is of split design and is composed of two materials. The upper part is a thermoplastic material (including an excessive chamfer R=30mm), which has good rigidity and scratch resistance. When a vehicle passes through a bumpy road surface, the tire wind deflector is prevented from being damaged by stress concentration caused by impact; the lower part is made of EPDM rubber material, which has a certain toughness while guiding the airflow; the two materials are chemically modified by thermoplastic resin to laminate and connect the silicone rubber and the thermoplastic resin material.

[0062] The utility model has three advantages: first, it has a double-material cross structure; second, it makes full use of the material characteristics for structural design; third, it is firmly installed and not easy to deform, and has a certain toughness and is not easy to break or damage.

[0063] Obviously, the specific implementation of the present invention is not limited by the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A wind blocking plate structure, characterized in that: It comprises an upper plate body and a lower plate body, wherein the strength of the upper plate body is greater than that of the lower plate body; and the lower plate body has ductility.

2. A wind blocking plate structure according to claim 1, characterized in that: The upper plate body comprises an upper connecting plate and a lower connecting plate, wherein the upper connecting plate and the lower connecting plate are arranged to intersect each other; and the upper connecting plate is connected to the lower plate body through the lower connecting plate.

3. A wind blocking plate structure according to claim 1, characterized in that: The upper plate body is made of thermoplastic resin material; the lower plate body is made of EPDM rubber.

4. A wind blocking plate structure according to claim 2, characterized in that: A reinforcing rib is provided at the connection between the upper connecting plate and the lower connecting plate.

5. The wind blocking plate structure according to claim 1, characterized in that: The upper plate body is provided with a mounting hole.

6. A vehicle body assembly, characterized in that: It comprises a front wheel cover and a rear wheel cover; the front wheel cover and the rear wheel cover are provided with a wind deflector structure as claimed in any one of claims 1 to 5 near the front end of the vehicle.

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