underbody structure

Abstract

The application provides a vehicle body lower structure capable of improving aerodynamic performance and driving stability. The vehicle body lower structure comprises a deflector plate arranged on a vehicle body of a vehicle and capable of moving between a storage position covering a lower part of the vehicle body and a deployed position protruding downward. The deflector plate comprises a first deflector plate arranged in front of a pair of front wheels of the vehicle and a second deflector plate arranged below the center of the vehicle body. The protruding amount of the first deflector plate is different from that of the second deflector plate when the deflector plates are in the deployed position.

Description

Technical Field

[0001] This invention relates to a vehicle body structure, and more particularly to a lower vehicle body structure. Background Technology

[0002] In existing technologies, a lower body structure consisting of multiple plates or frames is installed on the vehicle body. To improve vehicle energy efficiency and reduce the vehicle's impact on the environment, the vehicle's shape is designed. To further enhance aerodynamic performance, in addition to the flow-straightening effect of the existing undercover, pressure distribution control is needed to create aerodynamically favorable airflow. For example, Patent Document 1 discloses a lower body structure including a deflector that can move between a retracted position covering the lower part of the vehicle body and a downwardly projecting extended position, thereby further improving the aerodynamic performance of the central lower part of the vehicle. However, while improving the plates and other components of the lower body structure, the layout of parts originally located in the lower part of the vehicle body must also be considered. Therefore, it is necessary to develop a mass-producible device that meets both aerodynamic performance and layout requirements.

[0003] [Existing Technical Documents]

[0004] [Patent Literature]

[0005] [Patent Document 1] US Patent Publication No. US10953934 Summary of the Invention

[0006] This invention provides a vehicle body lower structure that can improve aerodynamic performance and driving stability.

[0007] This invention provides a lower body structure for a vehicle, including a deflector plate disposed on the vehicle body and movable between a retracted position covering the lower part of the vehicle body and an extended position protruding downwards. The deflector plate includes a first deflector plate and a second deflector plate. The first deflector plate is disposed in front of a pair of left and right front wheels of the vehicle, and the second deflector plate is disposed below the center of the vehicle body. Furthermore, the first and second deflector plates protrude differently in the extended position.

[0008] In one embodiment of the present invention, the protrusion of the first guide plate in the deployed position is greater than that of the second guide plate in the deployed position.

[0009] In one embodiment of the invention, the first deflector and the second deflector are each rotatably connected to the vehicle body at their front ends via a shaft member extending in the left-right direction of the vehicle.

[0010] In one embodiment of the present invention, a pair of first guide vanes are provided in front of a pair of front wheels, and a second guide vane is disposed between a pair of first guide vanes.

[0011] Based on the above, in the vehicle body lower structure of the present invention, a deflector is disposed on the vehicle body and is movable between a retracted position covering the lower part of the vehicle body and an extended position protruding downwards. The deflector includes a first deflector and a second deflector. The first deflector is disposed in front of the left and right front wheels of the vehicle, and the second deflector is disposed in the lower center of the vehicle body. Furthermore, the protrusion amounts of the first and second deflectors in the extended position are different. Thus, the deflector used in the vehicle body lower structure is divided into a first deflector in front of the left and right front wheels and a second deflector in the center. Therefore, the protrusion amounts of the first and second deflectors in the extended position can be set differently, thereby increasing the negative pressure near the inner side of the front wheels, and thus increasing the negative pressure that draws the vehicle towards the road surface. Accordingly, the vehicle body lower structure of the present invention can improve aerodynamic performance and driving stability.

[0012] To make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a perspective view of a vehicle body lower structure applied to a vehicle body according to an embodiment of the present invention.

[0014] Figure 2 yes Figure 1 The diagram shows a three-dimensional view of the lower structure of the vehicle body when viewed from the front to the rear and from the bottom to the top.

[0015] Figure 3 yes Figure 2 The diagram shows a three-dimensional view of the lower structure of the vehicle body when viewed from the rear to the front and from the top to the bottom.

[0016] Figure 4A and Figure 4B yes Figure 3 The diagram shows the guide plate in its stowed and unfolded positions.

[0017] Figure 5 yes Figure 3 The diagram shown is a top view of the lower structure of the vehicle body on one side.

[0018] Figures 6A to 6D yes Figure 5 The diagram shows the components in the stowed position, the deployed position, when encountering an obstacle, and the side view after passing through an obstacle.

[0019] Figure 7A and Figure 7B yes Figure 5 The diagram shows a side view of the hook component with the guide plate in the stowed and unfolded positions.

[0020] Figure 8 yes Figure 3 The diagram shows a plan view of the lower structure of the vehicle body at the rear end of the diffuser.

[0021] Figure 9 yes Figure 3 The diagram shows a partial enlarged view of the lower structure of the vehicle body at the rear end of the deflector.

[0022] Explanation of reference numerals in the attached figures:

[0023] 50: Vehicles;

[0024] 52: Vehicle body;

[0025] 52a: Front frame;

[0026] 52b: Buckle part;

[0027] 52c: Rear frame;

[0028] 52d: Sliding groove;

[0029] 54: Front wheel;

[0030] 60: Obstacles;

[0031] 100: Lower structure of the vehicle body;

[0032] 110: Deflector plate;

[0033] 112: First deflector;

[0034] 114: Second deflector;

[0035] 114a: Rotation axis;

[0036] 116: Rear spoiler;

[0037] 116a: Sliding pin;

[0038] 116b: Base;

[0039] 120: Shaft component;

[0040] 120a: Drive shaft;

[0041] 130: With components;

[0042] 140: Actuator;

[0043] 150: Force-applying component;

[0044] 160: Hook component;

[0045] 162: Claw;

[0046] 170: Guiding component;

[0047] 172: Groove;

[0048] 174: Convex column;

[0049] 176: abutment;

[0050] A: Region;

[0051] D: Vehicle heading downwards;

[0052] Fr: The direction in which the vehicle is moving forward;

[0053] L: Left turn of the vehicle;

[0054] R: Right turn of the vehicle;

[0055] Rr: Rear direction of the vehicle;

[0056] U: Vehicle heading in the direction of travel. Detailed Implementation

[0057] The present invention will now be described in detail with reference to exemplary embodiments thereof, examples of which are illustrated in the accompanying drawings. Wherein, Figure 1 This is a perspective view of a vehicle body lower structure applied to a vehicle body according to an embodiment of the present invention. Figure 2 yes Figure 1 The diagram shown is a three-dimensional representation of the lower structure of the vehicle body when viewed from the front to the rear and from the bottom to the top. Figure 3 yes Figure 2 The diagram shown is a three-dimensional representation of the lower structure of the vehicle body when viewed from the rear to the front and from the top to the bottom. Figure 4A and Figure 4B yes Figure 3 The diagram shows the guide plate in its stowed and deployed positions. Figure 5 yes Figure 3 The diagram shown is a top view of the lower structure of the vehicle body on one side. Figures 6A to 6D yes Figure 5 The diagram shows the components in the stowed position, the deployed position, when encountering an obstacle, and the side view after passing through an obstacle. Figure 7A and Figure 7B yes Figure 5 The diagram shows a side view of the hook component in the stowed and deployed positions when the air deflector is in the air intake position. Figure 8 yes Figure 3 The diagram shown is a plan view of the lower structure of the vehicle body at the rear end of the diffuser. Figure 9 yes Figure 3The diagram shown is a partially enlarged view of the lower structure of the vehicle body at the rear end of the spoiler. The following will be accompanied by... Figures 1 to 9 This invention describes the application and specific structure of the vehicle body lower structure 100 in this embodiment. However, the vehicle body lower structure 100 in this embodiment is only one example of the present invention, and the present invention is not limited thereto.

[0058] Please refer to Figures 1 to 3 In this embodiment, the lower body structure 100 is adapted to be installed in the vehicle 50 (shown in...). Figure 1 The lower part of the vehicle body structure 100, for example, is located at the lower front of the vehicle 50, adjacent to the left and right front wheels 54 located at the front of the vehicle body 52 of the vehicle 50. The lower body structure 100 includes components located on the vehicle body 52 of the vehicle 50 (e.g., the lower part of the vehicle body structure 100). Figure 1 (as shown), and can be stored in the lower part of the vehicle body 52 (such as...) Figure 4A (as shown) and the downward-protruding unfolding position (as shown) Figure 4B A deflector 110 that moves between (as shown) the vehicle body 52. ​​The deflector 110 is mounted on the vehicle body 52, for example, in a rotatable manner. Covering the lower part of the vehicle body 52 means that the deflector 110 covers at least a portion of the lower part of the vehicle body 52, but is not limited to the deflector 110 being parallel to the horizontal plane of the vehicle 50 or the flat plane formed by the vehicle body 52. ​​The deflector 110 may also be angled and tilted in the retracted position. The extended position refers to a position lower than the retracted position. During the movement of the vehicle 50, the deflector 110 is moved from the retracted position (as shown) to... Figure 4A As shown) towards the unfolded position (e.g. Figure 4B (As shown) can move, enabling movement of flow from front to back (e.g., from...). Figure 1 The airflow (flowing from the front direction Fr to the rear direction Rr) shown in the diagram is rectified to effectively improve aerodynamic performance.

[0059] The specific structure of the lower body structure 100 will be described below in four parts. The first part describes the front structure of the deflector 110 used in the lower body structure 100; the second part describes the anti-collision structure of the deflector 110; the third part describes the anti-over-deployment structure of the deflector 110; and the fourth part describes the rear structure of the deflector 110. However, this invention is not limited thereto and can be adjusted according to requirements.

[0060] First, the front structure of the deflector 110 used in the lower body structure 100 of the vehicle body will be described in the first part of this invention. Please refer to... Figures 1 to 3In this embodiment, the deflector 110 includes a first deflector 112 and a second deflector 114. The first deflector 112 is disposed in front of the left and right front wheels 54 of the vehicle 50 (e.g., Figure 1 As shown), for example, a pair of first deflectors 112 are provided in front of a pair of front wheels 54. Correspondingly, a second deflector 114 is provided below the center of the vehicle body 52, for example, between the pair of first deflectors 112. The second deflector 114 can also be called a front deflector. A rear deflector 116 is also provided in the rear structure of the deflector 110 (as described in Part IV later). The first deflectors 112 function as fairings on the left and right sides of the second deflector 114. Thus, the front structure of the deflector 110 is divided into two parts (i.e., the first deflector 112 and the second deflector 114), so different settings can be made. For example, the first deflectors 112 and the second deflector 114 can be in the deployed position (e.g., Figure 4B The amount of protrusion varies when (as shown).

[0061] In detail, in this embodiment, such as Figure 3 , Figure 4A and Figure 4B As shown, the lower body structure 100 also includes an axle component 120. The axle component 120 is located in the left-right direction of the vehicle (e.g., Figure 3 Extending along the vehicle's leftward direction (L) and rightward direction (R), the front end of the deflector 110 (as shown in the diagram) extends towards the vehicle's leftward direction (L) and rightward direction (R), respectively. Figure 3 The first deflector 112 and the second deflector 114 are rotatably connected to the vehicle body 52 at their respective front ends via a shaft member 120 extending in the left-right direction of the vehicle. For example, they are each rotatably mounted on the front frame 52a of the vehicle body 52. ​​Although the figures show the first deflector 112 and the second deflector 114 rotatably connected to the vehicle body 52 via the same shaft member 120, in other embodiments not shown, the first deflector 112 and the second deflector 114 may also be mounted on the front frame 52a of the vehicle body 52 via different shaft members, which may extend along the same axis of rotation, or be parallel but staggered, etc. In addition, when the rotation axes of the first guide plate 112 and the second guide plate 114 are offset from each other, the first guide plate 112 can also be configured as a single plate located in front of and on the left and right sides of the second guide plate 114 (i.e., surrounding the three sides of the second guide plate 114), and the present invention is not limited thereto.

[0062] Furthermore, in this embodiment, as Figure 1 and Figure 2As shown, the rear end of the first deflector 112 is connected to the vehicle body 52 via a strap member used in the anti-collision structure (described in Part II of this invention). Correspondingly, the rear end of the second deflector 114 is connected to the rear deflector 116 (described in Part IV of this invention), and in the deployed position, it can be further connected to the vehicle body 52 via a hook member used in the anti-over-deployment structure (described in Part III of this invention). The specific structures of the anti-collision structure, the anti-over-deployment structure, and the rear deflector 116 will be described in Parts II through IV.

[0063] Therefore, in this embodiment, when the guide plate 110 is in the storage position (e.g. Figure 4A When the first deflector 112 and the second deflector 114 cover the lower part of the vehicle body 52 (as shown), and in the side view, the first deflector 112 located on the outer side and the second deflector 114 located in the middle at least partially overlap. Correspondingly, when the deflector 110 is in the deployed position (as shown), Figure 4B When (as shown), the first guide vane 112 and the second guide vane 114 each rotate relative to the vehicle body 52 about the shaft component 120 as the axis of rotation, so that the rear ends of the first guide vane 112 and the rear ends of the second guide vane 114 each move downward (for example, Figure 4B The vehicle shown protrudes downwards (D). In this case, since the front structure of the deflector 110 is divided into two parts (i.e., the first deflector 112 and the second deflector 114), the deflector 110 is configured such that the first deflector 112 and the second deflector 114 are in the deployed position (e.g., Figure 4B The amount of protrusion differs when the first deflector 112, located in front of the pair of front wheels 54, is in the deployed position. Preferably, the amount of protrusion of the first deflector 112 in the deployed position is greater than that of the second deflector 114. That is, assuming the front ends of the first deflector 112 and the second deflector 114 are at the same horizontal level, the rear end of the first deflector 112 is located further down than the rear end of the second deflector 114 (e.g., ...). Figure 4B The vehicle is shown at position D in the downward direction.

[0064] Therefore, in this embodiment, the air deflector 110 used in the lower body structure 100 of the first part of the present invention is divided into a first air deflector 112 in front of the left and right front wheels 54 and a second air deflector 114 in the center. The first air deflector 112 and the second air deflector 114 have different protrusions in the deployed position. Therefore, when the air deflector 110 is in the deployed position, the airflow velocity increases along the curvature of the air deflector 110, thereby increasing the negative pressure near the inner side of the front wheels 54, which increases the negative pressure that attracts the vehicle 50 towards the road surface. Accordingly, the lower body structure 100 of the first part of the present invention can improve aerodynamic performance and driving stability.

[0065] Next, the anti-collision structure of the deflector 110 used in the lower body structure 100 will be described in the second part of this invention. Please refer to... Figure 3 and Figure 5 In this embodiment, the lower structure 100 of the vehicle body further includes a shaft component 120, a belt component 130, and an actuator 140. For a description of the shaft component 120, please refer to the first part described above. The belt component 130 connects the deflector 110 and the vehicle body 52. ​​The actuator 140 is used to wind the belt component 130. Since the front structure of the deflector 110 is divided into two parts (i.e., the first deflector 112 and the second deflector 114), the following description will take the example of arranging the anti-collision structure composed of the belt component 130 and the actuator 140 on the first deflector 112 and the second deflector 114 (for example,...). Figure 5 The two belt components 130 shown are respectively located on the first guide plate 112 and the second guide plate 114. However, in other embodiments not shown, the anti-collision structure composed of the belt component 130 and the actuator 140 may be provided only on one of the first guide plate 112 and the second guide plate 114. Alternatively, the front structure of the guide plate 110 may consist of only a single plate (i.e., not divided into the first guide plate 112 and the second guide plate 114), and only one set of the above-described anti-collision structure may be provided. The present invention is not limited thereto.

[0066] In detail, in this embodiment, the lower structure 100 of the vehicle body also includes a drive shaft 120a. The drive shaft 120a is located in the left-right direction of the vehicle (e.g., Figure 3 and Figure 5The vehicle shown extends to the left (L) and right (R) and is rotatably mounted on the vehicle body 52. ​​Preferably, the drive shaft 120a is arranged parallel to and offset from the aforementioned shaft member 120. That is, the shaft member 120 is used to rotate the deflector 110, while the drive shaft 120a is used to drive the belt member 130 (as described later). The belt member 130 is connected to the deflector 110 at one end and to the vehicle body 52 at the other end, for example, to the corresponding first deflector 112 or second deflector 114 at one end and to the drive shaft 120a mounted on the front frame 52a of the vehicle body 52 at the other end. The belt member 130 is, for example, an elastic belt, but is not limited thereto. Preferably, the belt member 130 is connected to the drive shaft 120a by winding it around the drive shaft 120a, thereby indirectly connecting to the front frame 52a of the vehicle body 52. Furthermore, the actuator 140 is disposed on the drive shaft 120a to drive the drive shaft 120a to rotate, thereby winding the tape component 130 on the drive shaft 120a. However, the present invention does not limit the method by which the actuator 140 winds the tape component 130. For example, in other embodiments not shown, the drive shaft 120a may be omitted, and the tape component 130 may be wound via the shaft component 120.

[0067] Furthermore, in this embodiment, as Figure 5 As shown, the lower body structure 100 also includes a force-applying component 150. The force-applying component 150 is disposed on the deflector 110 and applies downward force to the deflector 110. The force-applying component 150 is, for example, a spring, but is not limited thereto. The force-applying component 150 is used to form part of the aforementioned anti-collision structure, and the force-applying component 150 is disposed near the belt component 130; therefore, the force-applying component 150 is preferably disposed on the first deflector 112 and the second deflector 114 as described above (e.g., belt component 130). Figure 5 The diagram shows two force-applying components 150 located on the upper surfaces of the first guide plate 112 and the second guide plate 114, respectively. However, in other embodiments not shown, the force-applying component 150 may be provided only on one of the first guide plate 112 and the second guide plate 114. Alternatively, the front structure of the guide plate 110 may consist of a single plate (i.e., not divided into the first guide plate 112 and the second guide plate 114) and may include one or more force-applying components 150. Alternatively, the force-applying component 150 may be omitted, and the invention is not limited thereto.

[0068] Therefore, in this embodiment, the anti-collision structure provided on the first guide plate 112 will be used as an example for explanation. When the guide plate 110 (e.g., the first guide plate 112) is in the storage position (e.g.) Figure 4A When (as shown), the deflector 110 covers the lower part of the vehicle body 52, and the belt component 130 is wound around the drive shaft 120a (as shown). Figure 6A(As shown). Accordingly, when the deflector 110 (e.g., the first deflector 112) is in the deployed position (as shown) Figure 4B As shown), the deflector 110 is directed downwards (e.g., Figure 6B The vehicle shown protrudes downwards (D), and the drive shaft 120a rotates via the actuator 140 (e.g., Figure 6B (in a clockwise direction), thereby releasing the belt component 130 wound on the drive shaft 120a downwards, causing the belt component 130 to extend downwards along with the movement of the guide plate 110 (as shown in the clockwise direction). Figure 6B As shown, the guide plate 110 can be supported in the deployed position. That is, when the guide plate 110 is in the retracted or deployed position, the length of the belt member 130 extending downward is adjusted according to the rotation of the drive shaft 120a, so that the belt member 130 supporting the guide plate 110 is in a straightened state in the retracted or deployed position. At the same time, the force-applying member 150 applies downward force to the guide plate 110, so that the guide plate 110 moves downward more smoothly after being subjected to force.

[0069] Furthermore, in this embodiment, when the deflector 110 is in the deployed position and encounters an obstacle 60 (such as...), Figure 6C As shown), the downward-protruding deflector 110 (e.g., the first deflector 112) is pushed upward by the obstacle 60 (e.g., Figure 6C The vehicle shown moves upward in the direction U). At this time, since the belt component 130 has been fully released and extended downward from the drive shaft 120a, the belt component 130 bends (e.g., as the deflector 110 moves from the deployed position to the retracted position). Figure 6C (As shown) without interfering with the movement of the deflector 110 to the retracted position. Furthermore, since the force-applying component 150 is also elastic, it can also be compressed when the deflector 110 moves from the deployed position to the retracted position.

[0070] Additionally, in this embodiment, after the deflector 110 passes the obstacle 60 (e.g., Figure 6D As shown), the compressed force-applying component 150 is released, thereby applying downward force to the deflector 110 (e.g., the first deflector 112), causing the deflector 110 to move downward (e.g., Figure 6BThe vehicle shown is moved downwards (D) to reset, i.e., moved to the deployed position. At this time, the deformed belt component 130 extends downwards again along with the movement of the deflector 110, thereby supporting the deflector 110 in the deployed position. That is to say, when the deflector 110 is in the deployed position and encounters an obstacle 60 and causes unintentional movement, the drive shaft 120a does not rotate nor change the length of the belt component 130 extending downwards. The belt component 130 bends due to its own elasticity without interfering with the movement of the deflector 110 to the retracted position. Therefore, the belt component 130 can not only serve as a support component to support the deflector 110, but also prevent the deflector 110 from being damaged by a collision through deformation.

[0071] Therefore, in this embodiment, the deflector 110 used in the vehicle body lower structure 100 described in the second part of the present invention is provided with an anti-collision structure composed of a belt member 130, an actuator 140, etc. When the deflector 110 is in the deployed position, the deflector 110 can be supported by the connection of the belt member 130. When the deflector 110 encounters an obstacle 60, the belt member 130 bends without interfering with the movement of the deflector 110 to the retracted position, thus avoiding damage to the deflector 110. Accordingly, the vehicle body lower structure 100 described in the second part of the present invention can improve aerodynamic performance and suppress the impact on the deflector 110 when it encounters an obstacle 60.

[0072] Next, in the third part of this invention, the anti-over-deployment structure of the deflector 110 used in the lower body structure 100 will be described. Please refer to... Figure 3 and Figure 5 In this embodiment, the lower structure 100 of the vehicle body also includes a hook component 160. The hook component 160 is disposed on the upper surface of the deflector 110 and is located near the latching portion 52b of the vehicle body 52. ​​Therefore, depending on the state of the deflector 110 (i.e., in the stowed position or the unfolded position), the hook component 160 separates from or latches onto the latching portion 52b as the deflector 110 moves. Since the front structure of the deflector 110 is divided into two parts (i.e., the first deflector 112 and the second deflector 114), the following description will take the example of setting the anti-over-deployment structure composed of the hook component 160 and the latching portion 52b on the second deflector 114 (for example, Figure 3 and Figure 5The hook component 160 shown is disposed on the second guide plate 114. However, in other embodiments not shown, the anti-over-deployment structure composed of the hook component 160 and the latching part 52b may be disposed only on the first guide plate 112, or multiple sets may be disposed on the first guide plate 112 and the second guide plate 114. Alternatively, the front structure of the guide plate 110 may consist of a single plate (i.e., not divided into the first guide plate 112 and the second guide plate 114), and one or more hook components 160 may be disposed thereon. The present invention is not limited thereto.

[0073] In detail, in this embodiment, the latching part 52b is, for example, a connecting structure formed by a part of the front frame 52a of the vehicle body 52, for example, in the left-right direction of the vehicle (e.g., Figure 3 and Figure 5 The crossbars shown extend in the left direction (L) and right direction (R) of the vehicle, but are not limited thereto. Correspondingly, a hook member 160 is provided on the upper surface of the deflector 110 (e.g., the second deflector 114), and the hook member 160 has a rearward (e.g., rearward) direction towards the vehicle. Figure 3 and Figure 5 The vehicle shows a claw portion 162 protruding in the rearward direction (Rr), and the hook portion 160 is located in front of the latch portion 52b (e.g., Figure 3 and Figure 5 The front end of the deflector 110 is positioned above the latching portion 52b in the forward direction (Fr) of the vehicle, while the claw portion 162 is positioned above the latching portion 52b. Furthermore, the front end of the deflector 110 is positioned in the left-right direction of the vehicle (e.g., Fr). Figure 3 and Figure 5 The axle component 120, extending in the left-hand (L) and right-hand (R) directions of the vehicle shown, is rotatably connected to the vehicle body 52. ​​The hook component 160 is located further rearward than the axle component 120 (e.g., further...). Figure 5 The vehicle rearward direction (Rr) shown is fixed to the latching part 52b. That is, the fixing part (i.e., the claw part 162) on the hook member 160 for fixing to the latching part 52b is located further rearward than the shaft member 120, but the present invention is not limited thereto.

[0074] Therefore, in this embodiment, when the guide plate 110 (e.g., the second guide plate 114) is in the storage position (e.g.) Figure 4A When (as shown), the hook component 160 separates from the latching part 52b of the vehicle body 52 (as shown). Figure 7A As shown), the claw portion 162 of the hook member 160 is positioned above and a distance away from the latch portion 52b. Correspondingly, when the deflector 110 (e.g., the second deflector 114) is in the deployed position (as shown...), Figure 4B When (as shown), the hook component 160 is fastened to the fastening part 52b of the vehicle body 52 (as shown). Figure 7BAs shown, the claw 162 of the hook member 160 moves from top to bottom and abuts against the upper surface of the latching portion 52b, thereby interfering with the latching portion 52b in the vertical direction of the vehicle. When the deflector 110 (e.g., the second deflector 114) moves between a stowed position and an extended position, the hook member 160 moves up and down along with the deflector 110. At this time, since the hook member 160 is located in front of the latching portion 52b, its vertical movement does not interfere with the latching portion 52b. Furthermore, since the claw 162 of the hook member 160 protrudes rearward and is located above the latching portion 52b, its vertical movement causes the claw 162 to move away from or towards the latching portion 52b, thereby separating the hook member 160 from or latching it onto the latching portion 52b.

[0075] Therefore, in this embodiment, the deflector 110 used in the vehicle body lower structure 100 described in Part III of the present invention is provided with an anti-over-deployment structure composed of a hook member 160, a claw member 162, and a latching member 52b. When the deflector 110 is in the deployed position, the deflector 110 can be supported by being latched onto the latching member 52b of the vehicle body 52 by the hook member 160, thus suppressing over-deployment or detachment of the deflector 110. When the deflector 110 is in the retracted position, the hook member 160 separates from the latching member 52b, so the provision of the hook member 160 does not affect the movement of the deflector 110 between the retracted and deployed positions. Accordingly, the vehicle body lower structure 100 described in Part III of the present invention can improve aerodynamic performance and suppress over-deployment or detachment of the deflector 110.

[0076] Finally, the rear structure of the deflector 110 used in the lower body structure 100 will be described in the fourth part of this invention. Please refer to... Figures 1 to 3 In this embodiment, the deflector 110 includes a front deflector and a rear deflector 116. The front deflector is, for example, the second deflector 114 described in the first part of the invention, and the rear deflector 116 is connected to the rear of the front deflector (second deflector 114) (e.g., Figures 1 to 3 The vehicle is shown in the rearward direction (Rr). Thus, the deflector 110 is positioned in the vehicle's longitudinal direction (e.g., Rr). Figures 1 to 3 The front spoiler (Fr) and rear spoiler (Rr) shown are divided into two parts (i.e., front spoiler and rear spoiler 116), thus allowing for different settings. For example, the front spoiler (second spoiler 114) and rear spoiler 116 can be in the deployed position (e.g., Figure 4B The orientation is different when shown.

[0077] In detail, in this embodiment, such as Figure 3 , Figure 4A and Figure 4BAs shown, the lower body structure 100 also includes a shaft component 120. The front spoiler (second spoiler 114) has its front end (e.g., corresponding to...) Figures 1 to 3 The front end of the front deflector (second deflector 114) is rotatably mounted on the vehicle body 52, for example, via a shaft member 120, wherein the front end of the front deflector (second deflector 114) is rotatably connected to the vehicle body 52, and the rear end of the front deflector (second deflector 114) (for example, corresponding to the end of the vehicle body 52 in the forward direction Fr direction) is rotatably mounted on the vehicle body 52, for example, via a shaft member 120, while the rear end of the front deflector (second deflector 114) is rotatably mounted on the vehicle body 52 in the forward direction Fr direction, and the rear end of the front deflector (second deflector 114) is rotatably mounted on the vehicle body 52 in the forward direction Fr direction, for example, via a shaft member 120, wherein ..., for example, via a shaft member 120, wherein the rear end of the front deflector (second deflector 114) is rotatably mounted on the vehicle body 52, for example, via a shaft member 120, wherein the rear end of the front deflector (second deflector 114) is rotatably mounted on the vehicle body 52, for example, via a shaft member 120, wherein the rear end of the front deflector (second deflector 114) is rotatably mounted on the vehicle body 52, for example, Figures 1 to 3 The rear diffuser 116 is connected to the rear deflector 116 at the rear end of the front deflector (second deflector 114) in the vehicle's rearward direction (Rr). Correspondingly, the rear deflector 116 is rotatably mounted on the rear end of the front deflector (second deflector 114) with its front end rotatably mounted on the rear end of the front deflector (e.g., in the vehicle's rearward direction). Figures 1 to 3 The vehicle body 52 is slidably mounted on the vehicle body 52 in the forward direction (Fr) and the rearward direction (Rr) as shown. Figure 3 As shown, for example, the front end of the rear deflector 116 is rotatably mounted on the rear end of the front deflector (second deflector 114) via a rotating shaft 114a, while the rear end of the rear deflector 116 is slidably mounted on the rear frame 52c of the vehicle body 52 via a sliding pin 116a. The rear end of the rear deflector 116 refers to the portion opposite to the front end; the invention is not limited to this as long as the mounting point is located at the rear portion of both the front and rear portions of the rear deflector 116.

[0078] To go further, such as Figure 3 and Figure 8 As shown, in this embodiment, the rear frame 52c of the vehicle body 52 may be provided with a structure in the vehicle's longitudinal direction (e.g., Figures 1 to 3 The diagram shows a pair of sliding grooves 52d extending in the vehicle's forward direction (Fr) and rearward direction (Rr). A pair of sliding pins 116a may be provided on the upper surface of the rear diffuser 116, and these sliding pins 116a are, for example, pins provided on a base 116b protruding upwards from the upper surface of the rear diffuser 116. Furthermore, the sliding grooves 52d extend in the vehicle's width direction (e.g., Figure 3 and Figure 8 The sliding pin 116a is positioned on the outer side of the vehicle's left-hand (L) and right-hand (R) directions, and extends outward. Therefore, the sliding pin 116a can be fitted into the sliding groove 52d, and can slide within the sliding groove 52d as the rear diffuser 116 moves. However, in other embodiments not shown, the positions of the sliding groove 52d and the sliding pin 116a can be interchanged. For example, the sliding groove 52d can be positioned on the inner side of the sliding pin 116a, and the sliding pin 116a can extend inward; or the sliding groove 52d can be positioned on the rear diffuser 116, and the sliding pin 116a can be positioned on the vehicle body 52; or other structures that can slide via engagement can be used as the sliding component. This invention is not limited to these methods.

[0079] Furthermore, please refer to Figure 3 and Figure 9 ,in Figure 9 yes Figure 3 The lower body structure 100 shown is part of the rear structure (e.g., Figure 3 A partial enlarged view of the area covered by region A is provided to clearly show the guide member 170 at the rear end of the rear diffuser 116. In this embodiment, the lower body structure 100 also includes the guide member 170. The guide member 170 is disposed between the vehicle body 52 and the rear diffuser 116 to guide the movement of the diffuser 110 to the deployed position. The guide member 170 includes a groove 172 disposed on the vehicle body 52 and a protrusion 174 disposed on the rear end of the rear diffuser 116. The groove 172 is, for example, a C-shaped groove, and the protrusion 174 is, for example, a pin disposed on a base 176 protruding upward from the upper surface of the rear diffuser 116. Furthermore, the groove 172 is located in the vehicle width direction (e.g., Figure 3 and Figure 9 The protrusion 174 is positioned on the outer side of the vehicle's left-hand (L) and right-hand (R) directions, and extends outward. Therefore, the protrusion 174 can fit into the groove 172, and can slide within the groove 172 as the rear diffuser 116 moves. However, in other embodiments not shown, the positions of the groove 172 and the protrusion 174 can be interchanged. For example, the groove 172 can be positioned on the inner side of the protrusion 174, and the protrusion 174 can extend inward; or the groove 172 can be positioned on the rear diffuser 116, and the protrusion 174 can be positioned on the vehicle body 52; or other sliding structures can be used as guiding components. This invention is not limited to these methods.

[0080] Therefore, in this embodiment, when the guide plate 110 is in the storage position (e.g. Figure 4A When the front deflector (second deflector 114) and rear deflector 116 are in the deployed position (as shown), they cover the lower part of the vehicle body 52. ​​Correspondingly, when the deflector 110 is in the deployed position (as shown), the front deflector (second deflector 114) and rear deflector 116 cover the lower part of the vehicle body 52. Figure 4B When the front deflector (second deflector 114) rotates relative to the vehicle body 52 about the shaft member 120 as the axis of rotation, the rear end of the front deflector (second deflector 114) moves downward. At this time, the front end of the rear deflector 116 is connected to the rear end of the front deflector (second deflector 114), so the front end of the rear deflector 116 rotates relative to the vehicle body 52 about the rotation shaft 114a as the axis of rotation, and the front end of the rear deflector 116 moves downward. In addition, the rear end of the rear deflector 116 slides forward via the engagement of the sliding pin 116a and the sliding groove 52d, and the protrusion 174 of the guide member 170 moves along the groove 172 to guide the movement of the rear deflector 116.

[0081] In this case, since the deflector 110 is in the forward and backward directions of the vehicle (e.g., Figures 1 to 3 The vehicle is divided into two parts (i.e., front deflector and rear deflector 116) in the forward direction Fr and the rear direction Rr, as shown. Therefore, the deflector 110 is configured such that the front deflector (second deflector 114) and the rear deflector 116 are in the deployed position (e.g., Figure 4B The orientations are different when the front deflector (second deflector 114) is in the unfolded position. That is, the front end of the front deflector (second deflector 114) rotates about the shaft component 120 as the axis of rotation, causing the rear end of the front deflector (second deflector 114) to move downward. Correspondingly, the front end of the rear deflector 116 is driven downward by the rear end of the front deflector (second deflector 114), so the front end of the rear deflector 116 rotates relative to the vehicle body 52 about the rotation shaft 114a as the axis of rotation, and the rear end of the rear deflector 116 slides in the vehicle's longitudinal direction via the cooperation of the sliding pin 116a and the sliding groove 52d, and the guidance of the guide component 170. Therefore, when the front deflector (second deflector 114) is in the unfolded position, its upper surface faces rearward, while when the rear deflector 116 is in the unfolded position, its upper surface faces forward. This difference is due to the different orientations of the front deflector (second deflector 114) and the rear deflector 116 in the unfolded position (as shown in the diagram). Figure 4B The orientation may vary (as shown), for example, the guide plate 110 may be V-shaped, but this invention is not limited thereto.

[0082] Therefore, in this embodiment, the air deflector 110 used in the lower body structure 100 described in Part IV of the present invention is divided into a front air deflector (second air deflector 114) and a rear air deflector 116. Thus, when the air deflector 110 is in the deployed position, the rear air deflector 116 slides forward, causing the front air deflector (second air deflector 114) and the rear air deflector 116 to have different orientations in the deployed position. This increases the airflow velocity along the air deflector 110. Accordingly, the lower body structure 100 described in Part IV of the present invention can rectify the airflow on the air deflector 110 and improve aerodynamic performance.

[0083] In summary, in the vehicle body lower structure of the present invention, the deflector is disposed on the vehicle body and can move between a retracted position covering the lower part of the vehicle body and an extended position protruding downwards, thereby improving aerodynamic performance. Specifically, in the vehicle body lower structure described in the first part of the present invention, the deflector is divided into a first deflector in front of the left and right front wheels and a second deflector in the center, thus allowing the protrusion amounts of the first and second deflectors in the extended position to be set differently, thereby improving driving stability. Furthermore, in the vehicle body lower structure described in the second part of the present invention, when the deflector is in the extended position, the deflector can be supported by the connection of the belt member, and when the deflector encounters an obstacle, the belt member bends without interfering with the movement of the deflector towards the retracted position, thereby suppressing the impact on the deflector when encountering an obstacle. Furthermore, in the vehicle body lower structure described in the third part of the present invention, when the deflector is in the deployed position, the deflector can be supported by being snapped onto the snap-on portion of the vehicle body by the hook member, thereby preventing the deflector from being over-deployed or falling off. Additionally, in the vehicle body lower structure described in the fourth part of the present invention, the deflector is divided into a front deflector and a rear deflector. When the deflector is in the deployed position, the rear deflector slides forward, causing the front and rear deflectors to face different directions, thereby increasing the airflow velocity on the deflector and improving aerodynamic performance. The vehicle body lower structure of the present invention can simultaneously have structures as described in the first to fourth parts, or it can have only one of them as needed. The present invention is not limited to this and can be adjusted according to requirements.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lower body structure for a vehicle, comprising a deflector disposed on the vehicle body and movable between a retracted position covering the lower part of the vehicle body and a downwardly protruding deployed position, characterized in that: The guide vane includes a first guide vane and a second guide vane. The first deflector is positioned in front of the left and right front wheels of the vehicle. The second air deflector is located below the center of the vehicle body, and, The first guide vane and the second guide vane protrude differently in the deployed position. The first guide plate is located on the left and right sides of the second guide plate.

2. The vehicle body lower structure according to claim 1, characterized in that, The protrusion of the first guide vane in the deployed position is greater than that of the second guide vane in the deployed position.

3. The vehicle body lower structure according to claim 1 or 2, characterized in that, The first deflector and the second deflector are each rotatably connected to the vehicle body at their front ends via a shaft member extending in the left-right direction of the vehicle.

4. The vehicle body lower structure according to claim 1 or 2, characterized in that, The first deflector is provided in front of the pair of front wheels, and The second guide vane is disposed between a pair of the first guide vanes.

Images