Lower body structure

Abstract

The present invention provides a vehicle body lower structure that can improve aerodynamic performance by rectifying the airflow on the deflector and prevent the guide components provided on the deflector from falling off the vehicle body. The vehicle body lower structure includes a deflector provided on the vehicle body and movable between a storage position covering the lower portion of the vehicle body and a deployment position protruding downward. The deflector includes a front deflector and a rear deflector, wherein the front deflector is rotatably provided on the vehicle body with its front end along a first rotation axis, the rear deflector is rotatably provided on the rear end of the front deflector with its front end along a second rotation axis, and is rotatably provided on the vehicle body with its rear end along a third rotation axis and slidable in the vehicle front-to-back direction, the rear deflector is provided with a guide component protruding upward, and the guide component is covered from above by a covering portion formed on the vehicle body.

Description

Technical Field

[0001] The present invention relates to a vehicle body structure, in particular to a vehicle body lower structure. Background Art

[0002] In the prior art, a lower body structure consisting of a plurality of plates or frames is installed on the body of a vehicle. In order to improve the energy efficiency of the vehicle and reduce the impact of the vehicle on the natural environment, the appearance of the vehicle is designed. Among them, in order to further improve the aerodynamic performance, in addition to the rectifying effect of the existing under cover, it is also necessary to create an aerodynamically favorable flow through pressure distribution control. For example, patent document 1 discloses a lower body structure, which includes a deflector panel that can move between a storage position covering the lower part of the vehicle body and an expanded position protruding downward, thereby further improving the aerodynamic performance of the central lower part of the vehicle. However, while improving the plate body and the like of the lower body structure, it is also necessary to consider the layout of the parts originally arranged in the lower part of the vehicle body. Therefore, it is necessary to develop a mass-producible device that meets the aerodynamic performance and layout requirements.

[0003] [Prior art literature]

[0004] [Patent Document]

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

[0006] The present invention provides a vehicle body lower structure, which can rectify the airflow on the deflector to improve the aerodynamic performance and can inhibit the guide component arranged on the deflector from falling off from the vehicle body.

[0007] The present invention provides a vehicle body lower structure, comprising a deflector mounted on a vehicle body and movable between a stowed position covering the lower portion of the vehicle body and a deployed position protruding downward. The deflector comprises a front deflector and a rear deflector, wherein the front deflector is rotatably mounted on the vehicle body at its front end along a first rotation axis, and the rear deflector is rotatably mounted on the rear end of the front deflector at its front end along a second rotation axis, and the rear end is rotatably mounted on the vehicle body along a third rotation axis and slidably mounted in the vehicle front-to-back direction. The rear deflector is provided with a guide member protruding upward, and the guide member is covered from above by a cover formed on the vehicle body.

[0008] In one embodiment of the present invention, the guide member includes a guide pin extending in the vehicle left-right direction, the covering portion includes a guide groove corresponding to the guide pin, and the guide pin is disposed in the guide groove and is configured to be movable along the guide groove.

[0009] In one embodiment of the present invention, the vehicle body includes a front frame and a rear frame connected to each other, the front frame supports the front deflector so that it can rotate via the first rotation axis, and the rear frame supports the rear deflector so that it can rotate via the third rotation axis and can slide in the front-to-rear direction of the vehicle.

[0010] In one embodiment of the present invention, the covering portion is provided on the rear frame and is configured to be embedded in a recess formed on the front frame.

[0011] Based on the above, in the vehicle body lower structure of the present invention, the deflector is divided into a front deflector and a rear deflector. When the deflectors are in the deployed position, the rear deflector slides forward under the guidance of the guide member, thereby increasing the velocity of the airflow along the deflectors. Furthermore, the rear deflector is provided with an upwardly projecting guide member, which is covered from above by a cover formed on the vehicle body. Therefore, even if the rear deflector is deformed, the guide member is unlikely to fall off the cover. Consequently, the vehicle body lower structure of the present invention can improve aerodynamic performance by rectifying the airflow over the deflectors and prevent the guide member provided on the deflectors from falling off the vehicle body.

[0012] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below with reference to the accompanying drawings for detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a perspective schematic diagram of a vehicle body lower structure according to an embodiment of the present invention being applied to a vehicle body;

[0014] Figure 2 yes Figure 1 The schematic perspective view of the vehicle body lower structure shown is viewed from the front to the rear and from the top to the bottom;

[0015] Figure 3A and Figure 3B yes Figure 2 A schematic side view of a deflector used in a vehicle body lower structure in a stowed position and a deployed position is shown;

[0016] Figure 4 yes Figure 2 The schematic partial cross-sectional view of the vehicle body lower structure around the guide component along the left and right direction of the vehicle is shown;

[0017] Figure 5 yes Figure 4The schematic partial cross-sectional view of the vehicle body lower structure around the guide component along the vehicle front-rear direction is shown;

[0018] Figure 6 yes Figure 4 A partial oblique schematic diagram of a guide component provided on the rear deflector of the vehicle body lower structure shown;

[0019] Figure 7 yes Figure 4 A partial oblique schematic diagram of the covering portion of the vehicle body lower structure provided on the rear frame;

[0020] Figure 8 yes Figure 4 The diagram shows a partial oblique view of the recessed portion of the vehicle body lower structure provided on the front frame.

[0021] Description of reference numerals:

[0022] 50: Vehicle;

[0023] 52: body;

[0024] 52a: front frame;

[0025] 52b: rear frame;

[0026] 54: front wheel;

[0027] 100: vehicle lower structure;

[0028] 110: deflector;

[0029] 112: front spoiler;

[0030] 112a, 114a: front end;

[0031] 112b, 114b: backend;

[0032] 114: rear spoiler;

[0033] 116: fairing;

[0034] 120a: first shaft component;

[0035] 120b: second shaft component;

[0036] 120c: third shaft component;

[0037] 130: guide structure;

[0038] 132: guide component;

[0039] 132a: guide pin;

[0040] 134: covering part;

[0041] 134a: guide groove;

[0042] 134b: concave hole;

[0043] 134c, 136b: inclined plane;

[0044] 134d, 136c: step surface;

[0045] 136: concave part;

[0046] 136a: convex column;

[0047] A1: first rotation axis;

[0048] A2: second rotation axis;

[0049] A3: third rotation axis;

[0050] D: vehicle down direction;

[0051] Fr: vehicle front direction;

[0052] L: vehicle left direction;

[0053] R: right direction of the vehicle;

[0054] Rr: rear direction of the vehicle;

[0055] U: Vehicle upward direction. DETAILED DESCRIPTION

[0056] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Figure 1 is a perspective schematic diagram of a vehicle body lower structure according to an embodiment of the present invention being applied to a vehicle body. Figure 2 yes Figure 1 The schematic diagram of the vehicle lower structure shown is a perspective view when viewed from the front to the rear and from the top to the bottom. Figure 3A and Figure 3B yes Figure 2 The side view of the deflector used in the vehicle lower structure is shown in the stowed position and the deployed position. Figure 4 yes Figure 2 The schematic partial cross-sectional view of the vehicle lower structure around the guide component along the left and right direction of the vehicle is shown. Figure 5 yes Figure 4 The schematic partial cross-sectional view of the vehicle lower structure around the guide component along the vehicle front-rear direction is shown. Figure 6 yes Figure 4 The diagram shows a partial oblique view of the guide component provided on the rear spoiler of the vehicle body lower structure. Figure 7 yes Figure 4A partial oblique view of the covering portion of the vehicle body lower structure provided on the rear frame is shown. Figure 8 yes Figure 4 The following is a partial oblique view of the recessed portion of the vehicle lower structure provided on the front frame. Figures 1 to 8 The application and specific structure of the vehicle lower structure 100 of this embodiment are described, wherein the vehicle front and rear directions mentioned later refer to, for example, the vehicle front direction Fr and the vehicle rear direction Rr in the accompanying drawings, the vehicle left and right directions refer to, for example, the vehicle left direction L and the vehicle right direction R in the accompanying drawings, and the vehicle up and down directions refer to, for example, the vehicle upper direction U and the vehicle lower direction D in the accompanying drawings. However, this is only one example of the present invention and the present invention is not limited to this.

[0057] Please refer to Figure 1 and Figure 2 In this embodiment, the vehicle body lower structure 100 is suitable for being arranged on the vehicle 50 (shown in Figure 1 ), for example, is located at the lower portion of the front of the vehicle 50 and adjacent to a pair of left and right front wheels 54 located in front of the vehicle body 52 of the vehicle 50. The vehicle body lower structure 100 includes a structure located on the vehicle body 52 of the vehicle 50 (e.g., Figure 1 ), and can be in a storage position (as shown in FIG. Figure 3A ) and the expanded position protruding downward (as shown Figure 3B The deflector 110 is arranged on the vehicle body 52, for example, it is rotatably arranged on the vehicle body 52. ​​The lower part of the vehicle body 52 is covered, which means that the deflector 110 shields at least a part of the lower part of the vehicle body 52, but is not limited to being parallel to the horizontal plane where the vehicle 50 is located or the flat surface formed by the vehicle body 52. ​​The deflector 110 can also be provided with an angle and appear tilted when in the storage position. The expanded position refers to a position further downward than the storage position. During the driving of the vehicle 50, the deflector 110 is moved from the storage position (as shown in FIG. 1 ) to the deployed position. Figure 3A as shown) to the expanded position (as shown) Figure 3B shown) movement, can flow from front to back (for example, from Figure 1 The airflow shown in the figure (flowing from the front direction Fr to the rear direction Rr of the vehicle) is rectified to effectively improve the aerodynamic performance.

[0058] Specifically, in this embodiment, Figures 1 to 3B As shown, the deflector 110 includes a front deflector 112 and a rear deflector 114. The front deflector 112 is disposed in front of a pair of left and right front wheels 54 of the vehicle 50 (as shown in FIG. Figure 1 As shown), the rear deflector 114 is provided between a pair of left and right front wheels 54 of the vehicle 50 (as shown Figure 1As shown in FIG), the front deflector 112 and the rear deflector 114 are connected to each other. That is, the front deflector 112 and the rear deflector 114 are respectively arranged at the front side and the rear side in the front-to-rear direction of the vehicle. As a result, the deflector 110 is divided into two parts in the front-to-rear direction of the vehicle (i.e., the front deflector 112 and the rear deflector 114), so different settings can be made. For example, the front deflector 112 and the rear deflector 114 are in the deployed position (as shown in FIG). Figure 3B Furthermore, a pair of fairings 116 can be provided on the left and right sides of the front deflector 112, which can be driven between the stowed position and the deployed position in the same manner as the front deflector 112. However, the present invention does not limit the provision of the fairings 116.

[0059] Furthermore, in this embodiment, if Figure 2 and Figure 3A As shown, the vehicle body 52 includes a front frame 52a and a rear frame 52b connected to each other. The front deflector 112 has its front end 112a (eg, corresponding to Figure 2 and Figure 3A The front end of the front deflector 112 is rotatably provided on the vehicle body 52 along a first rotation axis A1 extending in the left-right direction of the vehicle. For example, the front end 112a of the front deflector 112 is connected to the vehicle body 52 via a first shaft member 120a extending along the first rotation axis A1 (at the end of the front deflector 112). Figure 3A ) and is rotatably connected to the vehicle body 52 (for example, provided on the front frame 52a), and the front frame 52a supports the front deflector 112 so as to be rotatable via the first rotation axis A1. Figure 2 and Figure 3A The front and rear ends of the rear deflector 114 are connected to the front end 114a of the rear deflector 114 (as described later). The front and rear ends are opposite portions of the deflector, but are not limited to being located near the edge of the deflector. The specific locations can be adjusted as needed.

[0060] Accordingly, in this embodiment, Figure 2 and Figure 3A As shown, the rear deflector 114 is rotatably mounted at its front end 114a on the rear end 112b of the front deflector 112 along a second rotation axis A2 extending in the left-right direction of the vehicle, and is rotatably mounted at its rear end 112b on the vehicle body 52 along a third rotation axis A3 extending in the left-right direction of the vehicle and slidably mounted in the front-rear direction of the vehicle. For example, the front end 114a of the rear deflector 114 is connected to the rear end 112b of the front deflector 112 via a second shaft member 120b extending along the second rotation axis A2 (in the vehicle). Figure 3A The rear end 114b of the rear deflector 114 is rotatably connected to the rear end 112b of the front deflector 112, and the rear end 114b of the rear deflector 114 is connected to the rear end 112b of the front deflector 112 via a third shaft member 120c (in Figure 3A The rear deflector 114 is rotatably connected to the vehicle body 52 (for example, it is arranged on the rear frame 52b) and is slidably arranged on the vehicle body 52 in the front-rear direction of the vehicle (for example, a sliding groove not shown is provided on the rear frame 52b of the vehicle body 52 to slide with the third shaft component 120c), thereby supporting the rear deflector 114 to be rotatable via the third rotation axis A3 and slidable in the front-rear direction of the vehicle.

[0061] Furthermore, in this embodiment, the first rotation axis A1, the second rotation axis A2, and the third rotation axis A3 are parallel to each other (extending in the left-right direction of the vehicle), and the implementation of the first shaft component 120a, the second shaft component 120b, and the third shaft component 120c can be the same or different. For example, a single long shaft rod with a width corresponding to the front deflector 112 or the rear deflector 114 can be used, or a pair of short shaft rods arranged on the left and right sides of the front deflector 112 or the rear deflector 114 can be used. The present invention is not limited to this and can be adjusted according to needs.

[0062] Through the above configuration, in this embodiment, when the guide plate 110 is in the storage position (such as Figure 3A ), the front deflector 112 and the rear deflector 114 cover the lower portion of the vehicle body 52. ​​Accordingly, when the deflector 110 is in the deployed position (as shown in FIG. Figure 3B As shown), the front end 112a of the front deflector 112 rotates relative to the vehicle body 52 (for example, the front frame 52a) with the first shaft member 120a as the rotation axis (i.e., the first rotation axis A1), so that the rear end 112b of the front deflector 112 moves downward (for example, Figure 3B ). Simultaneously, the front end 114a of the rear deflector 114 is driven by the rear end 112b of the front deflector 112 to move downward, and the front end 114a of the rear deflector 114 rotates relative to the rear end 112b of the front deflector 112 about the second shaft member 120b as the rotation axis (i.e., the second rotation axis A2). Furthermore, the rear end 114b of the rear deflector 114 rotates relative to the vehicle body 52 (e.g., the rear frame 52b) about the third shaft member 120c as the rotation axis (i.e., the third rotation axis A3), and the rear end 114b of the rear deflector 114 is driven by the front end 114a of the rear deflector 114 to move forward (i.e., corresponding to the rotation axis A1). Figure 3B The front of the vehicle slides toward one side of Fr).

[0063] It can be seen from this that in this embodiment, the deflector 110 used in the vehicle body lower structure 100 is in the vehicle front and rear direction (for example, Figures 1 to 3BThe front deflector 112 and the rear deflector 114 are divided into the front deflector 112 and the rear deflector 114 in the vehicle front direction Fr and the vehicle rear direction Rr, and the front deflector 112 and the rear deflector 114 are connected to each other and can rotate relative to each other. Therefore, the deflector 110 can be set as follows: the front deflector 112 and the rear deflector 114 are in the deployed position (such as Figure 3B In other words, when the deflectors 110 are in the deployed position, the front deflectors 112 face rearward, while the rear deflectors 114 face forward. Thus, the front and rear deflectors 112 and 114 form a V-shape, increasing the velocity of airflow along the deflectors 110. However, the present invention is not limited to this. Consequently, the vehicle lower structure 100 can rectify the airflow over the deflectors 110 and improve aerodynamic performance.

[0064] The guide plate 110 is moved from the storage position (eg Figure 3A as shown) to the expanded position (as shown) Figure 3B The action of the vehicle 50 (as shown) can be performed by a software device such as a drive unit or a control unit in the vehicle 50 in conjunction with a hardware device such as an operation interface (not shown) according to the instruction of the user (e.g., the driver of the vehicle 50), but the present invention does not exclude other operation methods (e.g., manual). Figure 3B as shown) to the storage position (as shown) Figure 3A The action shown in FIG. 1 is reversed according to the above description, that is, the front end 112a of the front deflector 112 rotates in the opposite direction relative to the vehicle body 52 (for example, the front frame 52a), so that the rear end 112b of the front deflector 112 moves upward and returns to the state of covering the lower part of the vehicle body 52. ​​At the same time, the front end 114a of the rear deflector 114 is driven by the rear end 112b of the front deflector 112 to move upward and return to the state of covering the lower part of the vehicle body 52, and the rear end 114b of the rear deflector 114 is pushed backward by the front end 114a of the rear deflector 114 (that is, corresponding to the rotation of the front end 114a of the rear deflector 114). Figure 3B However, the present invention is not limited to the above-mentioned operation mode, and it can be adjusted according to needs.

[0065] Furthermore, in this embodiment, if Figure 2 and Figure 3A As shown, the vehicle body lower structure 100 further includes a guide structure 130. The guide structure 130 is disposed between the vehicle body 52 (eg, the rear frame 52b) and the rear deflector 114 to guide the deflector 110 to the deployed position (eg, Figure 3B The guide structure 130 is disposed between the front end 114a and the rear end 114b of the rear deflector 114, so that when the deflector 110 moves to the deployed position (as shown in FIG. Figure 3BDuring the movement of the guide structure 130 (as shown in FIG. Figure 3A and Figure 3B As shown), the guide structure 130 can be used to guide the deflector 110 to the deployed position (as shown Figure 3B shown) movement.

[0066] For details, please refer to Figures 4 to 8 ,in Figure 4 and Figure 5 is a cross-sectional view of the guide structure 130 after assembly, and Figures 6 to 8 130 is a schematic diagram of the components after the guide structure 130 is disassembled. In this embodiment, the guide structure 130 includes a guide component 132, a covering portion 134, and a recess 136. The rear deflector 114 is provided with a Figures 4 to 6 The illustrated guide member 132 protrudes upward (U) from the vehicle and is covered from above by a cover 134 formed on the vehicle body 52. ​​Furthermore, the guide member 132 has a guide pin 132a extending in the left-right direction of the vehicle, and the cover 134 has a guide groove 134a corresponding to the guide pin 132a. The guide pin 132a is disposed within the guide groove 134a and is configured to move along the guide groove 134a. Furthermore, the cover 134 is configured to be embedded in a recess 136 to enhance stability. However, the present invention is not limited to this and can be adjusted as needed.

[0067] Furthermore, in this embodiment, if Figure 6 As shown, the guide member 132 is disposed on the rear deflector 114 and projects upward, for example, forming a guide base for mounting a guide pin 132a, described later. Furthermore, the outer side of the guide member 132 is provided with a guide pin 132a extending in the left-right direction of the vehicle. The guide pin 132a preferably projects outward from the vehicle (i.e., the guide member 132 located in the right direction R of the vehicle is provided with a guide pin 132a projecting in the right direction R on its outer side corresponding to the right direction R of the vehicle, and so on), but this is not limiting.

[0068] Furthermore, in this embodiment, if Figure 7 As shown, the cover portion 134 is disposed on the rear frame 52b and is configured as a lid-like structure having an interior space S and being open on the lower side (i.e., the side corresponding to the vehicle downward direction D). Furthermore, a guide groove 134a is defined on the outer side of the cover portion 134, corresponding to the guide pin 132a. The guide groove 134a communicates with the interior space S of the cover portion 134 and is preferably open toward the vehicle outer side, but this is not limiting.

[0069] Therefore, in this embodiment, Figure 4 and Figure 5As shown, the guide member 132 provided on the rear deflector 114 is covered by the cover portion 134 provided on the rear frame 52b. For example, the rear deflector 114 is mounted on the rear frame 52b from below. As a result, the guide member 132 provided on the rear deflector 114 penetrates from below the cover portion 134 provided on the rear frame 52b into the interior space S of the cover portion 134. This allows the cover portion 134, which has a lid-like structure, to cover the guide member 132 from above and further from both the left and right sides. Furthermore, the guide pin 132a provided on the guide member 132 penetrates outward into the guide groove 134a provided on the cover portion 134.

[0070] In this manner, the rear deflector 114 is connected to the rear frame 52b via the guide member 132 and the cover portion 134. The guide pin 132a moves along the guide groove 134a, and the guide member 132 moves relative to the cover portion 134, thereby guiding the movement of the rear deflector 114 relative to the rear frame 52b of the vehicle body 52. ​​Furthermore, the cover portion 134 covering the guide member 132 from above strengthens the connection between the cover portion 134 and the guide member 132, making the movement of the guide pin 132a along the guide groove 134a more stable and preventing the guide pin 132a from falling out of the cover portion 134 due to deformation of the rear deflector 114. However, the present invention is not limited to the above embodiment; the specific shapes of the guide member 132 and the cover portion 134, the shape of the guide pin 132a, the trajectory of the guide groove 134a, and the like can be adjusted as needed.

[0071] In addition, in this embodiment, Figure 7 As shown, the cover portion 134 is disposed on the rear frame 52b, with the upper end of the cover portion 134 (i.e., the exterior of the cover-like structure) protruding upward from the rear frame 52b. Furthermore, the upper end of the cover portion 134 is provided with a recessed hole 134b, an inclined surface 134c located adjacent to the recessed hole 134b, and a stepped surface 134d located on the vehicle's outer side relative to the inclined surface 134c. The recessed hole 134b is preferably open upward, the inclined surface 134c is preferably oriented in the same direction as the guide groove 134a, and the stepped surface 134d is preferably lowered in height from the inclined surface 134c toward the vehicle's outer side, but this is not limiting.

[0072] Furthermore, in this embodiment, if Figure 8As shown, recess 136 is provided on front frame 52a (preferably on the side of front frame 52a corresponding to the vehicle's inner side), and recess 136 is configured as a recessed structure that is recessed from bottom to top on front frame 52a. Furthermore, recess 136 is provided inside recess 136 with a boss 136a, an inclined surface 136b located adjacent to boss 136a, and a stepped surface 136c located on the vehicle's outer side relative to inclined surface 136b. Boss 136a preferably extends downward, inclined surface 136b preferably corresponds to the direction of inclined surface 134c, and stepped surface 136c preferably decreases in height from inclined surface 136b toward the vehicle's outer side, but this is not limiting.

[0073] Therefore, in this embodiment, Figure 4 and Figure 5 As shown, the covering portion 134 is configured to be embedded in the recess 136 formed on the front frame 52a. For example, the front frame 52a is mounted on the rear frame 52b from the top to the bottom, so that the recess 136 provided on the front frame 52a is connected to the upper end of the covering portion 134 from the top on the rear frame 52b, so that the covering portion 134 provided on the rear frame 52b is equivalent to being embedded in the recess 136 provided on the front frame 52a from the bottom to the top. Furthermore, the protruding column 136a provided on the inner side of the recess 136 penetrates from the top to the bottom into the recessed hole 134b provided on the upper side of the covering portion 134, and the inclined surface 136b provided on the inner side of the recess 136 corresponds to the inclined surface 134c provided on the upper side of the covering portion 134. Similarly, although Figure 4 and Figure 5 Although not shown in the partial cross-sectional view, the step surface 136 c provided on the inner side of the recess 136 also corresponds to the step surface 134 d provided on the upper side of the covering portion 134 .

[0074] In this manner, the rear frame 52b and the front frame 52a are connected via the cover portion 134 and the recess 136, with the cover portion 134 embedded in the recess 136 to enhance stability. Furthermore, the cover portion 134 and the recess 136 are secured and positioned together by the engagement of the recessed hole 134b with the boss 136a, the engagement of the inclined surface 134c with the inclined surface 136b, and the engagement of the stepped surface 134d with the stepped surface 136c, thereby enhancing the stability of the cover portion 134. This prevents the guide pin 132a from falling out of the cover portion 134 due to deformation of the rear deflector 114. However, the present invention is not limited to the above-described embodiment; the specific shapes of the cover portion 134 and the recess 136, the shapes of the recessed hole 134b, the inclined surface 134c, the stepped surface 134d, the shapes of the boss 136a, the inclined surface 136b, the stepped surface 136c, and the presence or absence of these structures can all be adjusted as needed.

[0075] In summary, in the vehicle body lower structure 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 under the guidance of the guide component, thereby increasing the flow rate of the airflow along the deflector. In addition, the rear deflector is provided with a guide component protruding upward, and the guide component is covered from above by a covering portion formed on the vehicle body. Therefore, even if the rear deflector is deformed, the guide component is not easy to fall off from the covering portion. Preferably, the covering portion is provided on the rear frame and is configured to be embedded in a recess formed on the front frame. Therefore, the front frame and the rear frame constituting a part of the vehicle body both cover the guide component from above, thereby increasing the stability of the guide component. Accordingly, the vehicle body lower structure of the present invention can rectify the airflow on the deflector to improve the aerodynamic performance, and can prevent the guide component provided on the deflector from falling off from the vehicle body.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements 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 vehicle lower body structure comprising a deflector disposed on a vehicle body and movable between a stowed position covering a lower portion of the vehicle body and a deployed position projecting downward, wherein: The guide plate includes a front guide plate and a rear guide plate. The front deflector is rotatably arranged on the vehicle body along a first rotation axis at its front end. The rear deflector is rotatably mounted on the rear end of the front deflector at its front end along a second rotation axis, and is rotatably mounted on the vehicle body at its rear end along a third rotation axis and slidably mounted in the vehicle front-rear direction. The rear deflector is provided with a guide component protruding upward, and The guide member is covered from above by a covering portion formed on the vehicle body.

2. The vehicle body lower structure according to claim 1, characterized in that: The guide member has a guide pin extending in the left-right direction of the vehicle. The covering portion has a guide groove corresponding to the guide pin, The guide pin is provided in the guide groove and is configured to be movable along the guide groove.

3. The vehicle body lower structure according to claim 1 or 2, characterized in that: The vehicle body includes a front frame and a rear frame connected to each other, The front frame supports the front deflector so as to be rotatable via the first rotation shaft. The rear frame supports the rear deflector so as to be rotatable via the third rotation shaft and slidable in the vehicle front-rear direction.

4. The vehicle body lower structure according to claim 3, characterized in that: The covering portion is provided on the rear frame and is configured to be embedded in a recess formed on the front frame.

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