JP6204208B2 - Lower body structure in vehicles - Google Patents

Description

  The present invention relates to a vehicle body lower part structure in a vehicle having an under cover positioned below a driving unit for traveling, and specifically, the driving unit is driven by traveling wind flowing under the under cover when the vehicle is traveling. This is for effectively cooling.

  Conventionally, there is a vehicle body lower structure in the vehicle described in Patent Document 1 below. According to this publication, the vehicle body lower part structure in the vehicle is located at a part of the full width in the vehicle body width direction and is supported by the skeleton member of the vehicle body, and below the lower part of the drive unit. And an under cover that is positioned and supported by the skeleton member. The under cover includes an under cover body extending in the width direction and the front-rear direction of the vehicle body, and each of the under covers is located forward of the lower rear end of the drive unit and protrudes rearward and upward from the under cover body. The main body is opened at each end of the underside toward the bottom of the under cover body to allow introduction of running wind, while the projecting end is opened rearward and upward to discharge the running wind. It has a front duct and a rear duct for guiding the running wind in which a discharge opening is formed.

  While the vehicle is running, foreign objects such as pebbles are sprung up by the wheels, and such foreign objects are prevented from moving toward the lower part of the drive unit by the under cover. This prevents the lower part of the drive unit from being damaged or soiled by the collision of the foreign matter.

  Further, when the vehicle travels, the traveling wind flowing under the under cover body passes through the introduction openings of the front and rear ducts, is introduced into the ducts, and is guided toward the lower part of the drive unit. Then, it discharges | emits toward the lower part of the said drive unit from each said discharge opening. As a result, the drive unit is cooled by the traveling wind.

JP 2002-284044 A

  By the way, in the prior art, the front and rear ducts are each arranged in the center of the vehicle body in the width direction. For this reason, according to the rear duct before and after such an arrangement, it is considered that it is easy to guide the traveling wind flowing below the under cover body toward the lower portion of the drive unit.

  On the other hand, depending on the type of vehicle, a large number plate may be installed at the center in the width direction of the vehicle body in front of the front and rear ducts. In this case, the presence of the license plate impedes the flow of the traveling wind toward the rear in the center in the width direction of the vehicle body, and this traveling wind tends to flow below the side portion of the under cover body. It becomes. For this reason, there is a possibility that the traveling wind cannot be guided by the front and rear ducts toward the lower part of the drive unit as described above.

  Therefore, it can be considered that the front and rear ducts are provided on the side portions of the under cover body so as to match the flow position of the traveling wind. However, in this case, since the positions of the lower part of the drive unit and the front and rear ducts are different from each other in the width direction of the vehicle body, the front and rear ducts are simply connected to the side portions of the undercover body. However, it is difficult to guide the traveling wind by the front and rear ducts toward the lower part of the drive unit. As a result, there is a risk that the air cooling of the drive unit by the running wind becomes insufficient.

  In the above case, it is also conceivable to provide a separate traveling wind guide duct in order to more reliably guide the traveling wind to the lower part of the drive unit. However, this increases the number of parts of the lower body structure of the vehicle and makes the configuration complicated, which is not preferable in terms of productivity at the lower part of the vehicle body.

  The present invention has been made paying attention to the above-described circumstances, and the object of the present invention is by traveling wind that flows below an under cover disposed below the traveling drive unit when the vehicle travels. It is to be able to effectively cool the drive unit and to achieve this with a simple construction.

The invention according to claim 1 is a traveling drive unit 15 that is positioned at a part of the entire width in the width direction of the vehicle body 2 and supported by the skeleton member 12 of the vehicle body 2, a front lower portion of the lower portion of the drive unit 15, and / or Or an under cover 22 that is positioned below and supported by the skeleton member 12. The under cover 22 extends in the width direction and the front-rear direction of the vehicle body 2, and each of the drive units 15. It is located forward of the lower rear end and at the other part in the width direction of the vehicle body 2 and protrudes rearward and upward from the undercover main body 23. The undercover main body 23 is formed at each end of the undercover main body 23. Introducing openings 52 and 53 that allow the traveling wind A to be introduced into the lower part of the vehicle. Possible and the discharge opening 54 and 55 before traveling wind guide which is formed of, in underbody structure of a vehicle having a rear duct 37,
When viewed from the line of sight along the longitudinal direction of the vehicle body 2 (FIG. 3), at least a part of the discharge opening 54 of the front duct 37 and the front plate 58 of the rear duct 38 overlap each other, and the front plate of the rear duct 38 Of the upper edge of 58, the upper edge 58a of the gawa close to the lower part of the drive unit 15 in the width direction of the vehicle body 2 is positioned lower than the upper edge rim 58b of the far gawa,
Of the discharge opening 55 of the rear duct 38, the inner width dimension W1 in the vertical direction of the gawa near the lower part of the drive unit 15 in the width direction of the vehicle body 2 is made smaller than the inner width dimension W2 of the far gawa. The vehicle body lower part structure in the vehicle characterized by this.

  In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the “Example” section and the contents of the drawings described later.

  The effects of the present invention are as follows.

The invention according to claim 1 is located at a part of the entire width in the width direction of the vehicle body and supported by a skeleton member of the vehicle body, and is located at the front lower side and / or below the lower part of the drive unit. An under cover supported by the skeleton member, the under cover body extending in the width direction of the vehicle body and in the front-rear direction, and each of the under cover body in front of the lower rear end of the drive unit and in the width direction of the vehicle body It is located in the other part of the above and protrudes rearward and upward from the undercover main body, and the undercover main body opens at each end of the wing toward the lower side of the undercover main body so that traveling wind can be introduced. On the other hand, the front and rear ducts for traveling wind guidance were formed in which an opening was formed, and a discharge opening was formed at each protruding end portion that opened toward the rear upper side and allowed to discharge the traveling wind. In vehicle body lower structure at both,
As seen from the line of sight along the longitudinal direction of the vehicle body, at least a part of the discharge opening of the front duct and the front plate of the rear duct overlap with each other, and the width of the vehicle body among the upper edge of the front plate of the rear duct In the direction, the upper edge of the gawa near the lower part of the drive unit is positioned lower than the upper edge of the far gawa.

  For this reason, during traveling of the vehicle, the traveling wind exhausted rearward from the discharge opening after passing through the introduction opening of the front duct from below the undercover body of the undercover is forward of the rear duct. The upper end edge of the face plate is made to flow more toward the lower part of the drive unit through the upper part of the upper edge part of the side near the lower part of the drive unit, which is positioned lower.

  Therefore, as described above, the lower part of the drive unit is located in a part of the width direction of the vehicle body, while the front and rear ducts are located in other parts of the width direction of the vehicle body. Although the positions of the rear duct and the rear duct are different from each other in the width direction of the vehicle body, the traveling wind that has passed through the front duct flows more reliably toward the lower part of the drive unit. As a result, the drive unit is effectively cooled by the traveling wind flowing under the under cover.

  In addition, in the discharge opening of the rear duct, the inner width dimension in the vertical direction of the paper close to the lower part of the drive unit in the width direction of the vehicle body is made smaller than the inner width dimension of the far paper.

  Here, after passing through the opening of the rear duct from below the under cover body of the under cover, of the traveling wind discharged rearward from the outlet opening of the rear duct, the small inner width dimension described above The traveling wind passing through the discharge opening has a higher discharge speed than the traveling wind passing through the discharge opening having a large inner width dimension, and a larger negative pressure tends to be generated around the traveling wind having a large discharge speed. Become.

  As described above, since the discharge opening with the small inner width dimension is located on the side of the lower side of the drive unit in the width direction of the vehicle body, the discharge speed through the discharge opening with the small inner width dimension. A large traveling wind is directed toward the lower part of the drive unit, and at least a part of the traveling wind discharged from the discharge opening of the front duct is sucked by the negative pressure around the traveling wind. At the same time, it is directed to the lower part of the drive unit. As a result, the drive unit is more effectively cooled by the traveling wind.

  On the other hand, effective cooling of the drive unit by the traveling wind described above is achieved by devising the shape of the front and rear ducts, and it is not necessary to provide a separate vehicle guide duct. Therefore, the effective cooling of the drive unit by the travel wind described above can be achieved with a simple configuration.

It is side surface partial sectional drawing. It is a top view. FIG. 3 is an enlarged sectional view (rear view of a vehicle body) taken along the line III-III in FIG. 1. It is a simplified perspective view of what was shown in FIGS.

  The vehicle body lower structure in the vehicle of the present invention, when the vehicle is traveling, the drive unit can be effectively cooled by the traveling wind flowing under the under cover disposed below the traveling drive unit, and In order to achieve the object of achieving this with a simple configuration, the mode for carrying out the present invention is as follows.

  That is, the vehicle body lower structure in the vehicle is located at a part of the entire width in the vehicle body width direction and is supported by the skeletal member of the vehicle body, and the front lower part and / or the lower part of the lower part of the drive unit. And an under cover that is positioned and supported by the skeleton member. The under cover includes an under cover body that extends in the vehicle body width direction and the front-rear direction, and each of the under covers that are located in front of the lower rear end of the drive unit and in other parts in the vehicle body width direction and are rearward of the under cover body. Projecting upward, the under cover body opens at each end of the wing toward the bottom of the under cover body, and an introduction opening is formed to allow the running wind to be introduced. It has a front duct and a rear duct for traveling wind guide that are open toward the rear and are formed with discharge openings that allow the traveling wind to be discharged.

  When viewed from a line of sight along the longitudinal direction of the vehicle body, at least a part of the discharge opening of the front duct and the front plate of the rear duct overlap each other, and among the upper edge of the front plate of the rear duct, In the width direction, the upper edge of the gawa that is close to the lower part of the drive unit is positioned lower than the upper edge of the gang that is far away.

  Of the outlet opening of the rear duct, the inner width dimension in the up and down direction of the flange close to the lower portion of the drive unit in the width direction of the vehicle body is made smaller than the inner width dimension of the far fan.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  In the figure, reference numeral 1 is a vehicle exemplified by an automobile, and an arrow Fr indicates the front in the traveling direction of the vehicle 1. The left and right described below refer to the width direction of the vehicle body 2 when the vehicle 1 is viewed from the rear.

  The vehicle 1 includes a vehicle body 2, left and right front wheels 3 and 3 that are suspended from the vehicle body 2 and support the vehicle body 2 on a traveling surface, and left and right rear wheels (not shown).

  The vehicle body 2 constitutes a lower portion of the vehicle body 2, a pair of left and right side members 6, 6 extending in the front-rear direction of the vehicle body 2, and the front end portions of the left and right side members 6, 6 extending in the width direction of the vehicle body 2. A front cross member 7 that joins, a midway cross member 8 that joins midway parts in the front-rear direction at the front parts of the left and right side members 6, 6, and a rear part at the front parts of the left and right side members 6, 6. Other middle cross members 9 that connect the end portions and a radiator support 10 that is installed at the front end portions of the left and right side members 6, 6 are provided. The member 12 is configured.

  A front bumper 13 made of resin is provided to cover the front end portions of the left and right side members 6, 6, the front cross member 7, and the radiator support 10 from the front. Although not shown, the front bumper 13 is supported by the skeleton member 12. The lower end edge of the front bumper 13 is bent rearward until it is located below the front cross member 7.

  A travel drive unit 15 for the vehicle 1 is provided. The drive unit 15 includes an engine 16 that constitutes an upper portion thereof, and an oil pan 17 that constitutes a lower portion of the drive unit 15 and is fixed to the lower surface so as to close the lower surface of the engine 16. Brackets 18 are fixed to the joints between the side members 6 and the end portions of the midway cross member 8. The drive unit 15 is supported by each bracket 18 via an unillustrated engine mount and fastener, that is, the drive unit 15 is supported by the skeleton member 12 via the bracket 18 and the like.

  A resin under cover 22 is provided so as to be located in a portion from the front lower region to the lower region of the oil pan 17 of the drive unit 15. The under cover 22 constitutes an intermediate portion of the under cover 22 in the width direction of the vehicle body 2, and constitutes an under cover body 23 extending in the width direction and the front-rear direction of the vehicle body 2, and left and right side portions of the under cover 22. The left and right side protruding portions 24 and 24 integrally protrude upward from the left and right side edge portions of the under cover body 23, and the under cover 22 extends in the front-rear direction of the vehicle body 2. It is a flat U-shape when viewed along the line of sight. The under cover 22 may be provided only in the front lower area of the oil pan 17 of the drive unit 15 or may be provided only in the lower area of the oil pan 17.

  The under cover 22 is formed to close a space surrounded by the left and right side members 6, 6, the midway cross member 8, and the lower end edge of the front bumper 13. Further, the front and rear portions of the undercover body 23 extend substantially horizontally, and a midway portion between the front and rear portions extends so as to incline backward and downward.

  The upper ends of the side protrusions 24 of the under cover 22 are fixed to the lower surfaces of the front portions of the side members 6 by fasteners 26. Further, the front end edge portion of the under cover body 23 of the under cover 22 is fixed to the lower end edge portions of the front cross member 7 and the front bumper 13 by fasteners 27, respectively. Further, the rear edge portion of the under cover body 23 is fixed to the midway cross member 8 by a fastener 28. Accordingly, the under cover 22 is supported by the skeleton member 12.

  Another under cover 30 is provided below the oil pan 17 of the drive unit 15 and behind the under cover 22 so as to be continuous with the under cover 22. The other under cover 30 is also supported on the skeleton member 12 by a fastener 31. The other under cover 30 may be formed integrally with the under cover 22 but may not be provided.

  Front and rear openings 34 and 35 are formed on one side (left side) of the undercover body 23 of the undercover 22 so as to penetrate the one side in the vertical direction. The under cover 22 includes front and rear ducts 37 and 38 for traveling wind A guidance provided so as to penetrate the front and rear openings 34 and 35, respectively. These front and rear ducts 37 and 38 guide the traveling wind A flowing under the under cover body 23 toward the rear of the vehicle body 2 toward the oil pan 17 of the drive unit 15.

  In the above case, the oil pan 17 of the drive unit 15 is located at a portion that is substantially the center of the entire width of the vehicle body 2 in the width direction. On the other hand, the front and rear openings 34 and 35 and the front and rear ducts 37 and 38 are located in front of the rear end of the oil pan 17 and in other portions in the width direction of the vehicle body 2. That is, the oil pan 17 of the drive unit 15, the openings 34 and 35, and the ducts 37 and 38 are different from each other in the width direction of the vehicle body 2. Further, the rear opening 35 and the rear duct 38 are located closer to the oil pan 17 in the width direction of the vehicle body 2 than the front opening 34 and the front duct 37.

  In the plan view of the vehicle body 2 (FIG. 2), the front and rear openings 34 and 35 each have a rectangular shape that is long in the width direction of the vehicle body 2.

  The front and rear ducts 37 and 38 respectively have rectangular tubular bodies 40 and 41 that extend from the front and rear openings 34 and 35 to the rear upper side and then bend in a circular arc shape to the rear. doing. Each section in the longitudinal direction of the rectangular cylinders 40 and 41 has a rectangular shape that is long in the width direction of the vehicle body 2 and can be inserted into and removed from the front and rear openings 34 and 35.

  The front and rear ducts 37 and 38 are integrally formed at the front lower end portions of the square cylinders 40 and 41, and the under covers correspond to the opening edge portions of the front and rear openings 34 and 35. The outward flanges 42 and 43 that are in contact with the lower surface of the main body 23, the latching tools 44 and 45 for detachably latching a part of each of the outward flanges 42 and 43 on the opening edge portions, Fasteners 46 and 47 for detachably fastening other portions of the orientation flanges 42 and 43 to the opening edge portion are provided. The hooks 44 and 45 may be replaced with fasteners. In any case, the front and rear ducts 37 and 38 are detachably fixed to the undercover body 23.

  Here, the under cover body 23 of the under cover 22 is blow molded, while the front and rear ducts 37 and 38 are injection molded. Thus, the members 23, 37, and 38 having different molding methods are fixed to each other as described above.

  The inner holes of the front and rear ducts 37 and 38 serve as flow passages 50 and 51 for allowing the traveling air A below the under cover body 23 to flow toward the oil pan 17 of the drive unit 15. . The under cover main body 23 of the front and rear ducts 37 and 38 is opened at the edge of the underside of the under cover main body 23 and communicates with the flow passages 50 and 51 to introduce the traveling wind A. Introducing opening 52, 53 is made possible. On the other hand, at the projecting ends of the front and rear ducts 37, 38, there are formed discharge openings 54, 55 that open toward the rear and communicate with the flow passages 50, 51 so that the traveling wind A can be discharged. Is done.

  The introduction opening 52 of the front duct 37 opens downward from the front opening 34 side of the under cover body 23, but slightly opens forward. On the other hand, the front lower end portion of the rear duct 38 is fixed to a midway portion in the front-rear direction of the under cover body 23 that is inclined rearward. Thereby, the introduction opening 53 of the rear duct 38 is located below the lower end edge of the front bumper 13 and the lower surfaces of the front part of the undercover body 23 and opens toward the front lower side. .

  As seen from the line of sight along the longitudinal direction of the vehicle body 2 (FIG. 3), the lower part of the discharge opening 54 of the front duct 37 and the upper part of the discharge opening 55 of the rear duct 38 overlap each other. Thereby, at least each part of the discharge opening 54 of the front duct 37 and the front plate 58 constituting the front portion of the rectangular tube 41 of the rear duct 38 overlap each other. Of the upper edge portions 58a, 58b of the front plate 58 of the rear duct 38, the upper edge portion 58a of the gap close to the oil pan 17 of the drive unit 15 in the width direction of the vehicle body 2 is the upper edge portion of the far gap. It is positioned lower than 58b. In this case, the lower part of the discharge opening 54 of the front duct 37 and the upper edge 58b of the farther one of the left and upper right edge parts 58a, 58b of the front plate 58 of the rear duct 38 overlap each other. It is said that.

  Further, in the discharge opening 55 of the rear duct 38, the inner width dimension W1 in the vertical direction of the vertical side of the rivet close to the oil pan 17 of the drive unit 15 in the width direction of the vehicle body 2 is the inner width dimension W2 of the far flank. Is made smaller. In this case, the lower opening edge of the discharge opening 55 of the rear duct 38 extends substantially horizontally in the width direction of the vehicle body 2, but may extend so as to change in an inclined shape or in the vertical direction.

  As viewed from the line of sight along the front-rear direction of the vehicle body 2 (FIG. 3), a guide plate for guiding the traveling wind A at the end of the upper side of the rear duct 38 away from the oil pan 17 of the drive unit 15. 60 protrudes upward. The guide plate 60 is directed toward the oil pan 17 from the end portion of the discharge port 54 of the front duct 37 away from the oil pan 17 in the width direction of the vehicle body 2 toward the rear of the vehicle body 2. To be inclined. The guide plate 60 is preferably as small as possible and may not be provided.

  According to the above configuration, when viewed from the line of sight along the front-rear direction of the vehicle body 2 (FIG. 3), at least a part of the discharge opening 54 of the front duct 37 and the front plate 58 of the rear duct 38 overlap each other. Of the upper edge of the front plate 58 of the rear duct 38, the upper edge 58 a of the gawa near the lower part of the drive unit 15 in the width direction of the vehicle body 2 is positioned lower than the upper edge rim 58 b of the far gawa. Yes.

  For this reason, when the vehicle 1 travels, it passes through the introduction opening 52 and the flow passage 50 of the front duct 37 from below the undercover body 23 of the undercover 22 and is then discharged rearward from the discharge opening 54. First, the traveling wind A1 is guided by the guide plate 60 and is caused to flow toward the oil pan 17 of the drive unit 15, and among the upper end edges 58a and 58b of the front plate 58 of the rear duct 38, It is caused to flow toward the oil pan 17 of the drive unit 15 by passing more above the upper end edge 58a of the flange close to the oil pan 17 of the drive unit 15 positioned lower.

  Therefore, as described above, the oil pan 17 of the drive unit 15 is located in a part of the width direction of the vehicle body 2, while the front and rear ducts 37 and 38 are located in other parts of the width direction of the vehicle body 2, Although the oil pan 17 of the drive unit 15 and the front and rear ducts 37 and 38 are different from each other in the width direction of the vehicle body 2, the traveling wind A1 that has passed through the front duct 37 is more The drive unit 15 is surely made to flow toward the oil pan 17 of the drive unit 15. As a result, the drive unit 15 is effectively cooled by the traveling wind A flowing under the under cover 22.

  Further, in the discharge opening 55 of the rear duct 38, the inner width dimension W1 in the vertical direction of the vertical gap near the lower part of the drive unit 15 in the width direction of the vehicle body 2 is smaller than the inner width dimension W2 of the far gap. doing.

  Here, after passing through the inlet opening 53 and the flow passage 51 of the rear duct 38 from below the undercover body 23 of the undercover 22, the traveling wind is discharged rearward from the outlet opening 55 of the rear duct 38. Of A2 and A3, the traveling wind A2 passing through the discharge opening 55 having the small inner width dimension W1 described above has a higher discharge speed than the traveling wind A3 passing through the discharge opening 55 having the large inner width dimension W2, and A larger negative pressure tends to be generated around the traveling wind A2 where the discharge speed is high.

  As described above, the discharge opening 55 having the small inner width dimension W1 is located in the side of the oil pan 17 of the drive unit 15 in the width direction of the vehicle body 2, and thus has the small inner width dimension W1. The traveling wind A2 having a high discharge speed through the discharge opening 55 is vigorously directed toward the oil pan 17 of the drive unit 15, and is discharged from the discharge opening 54 of the front duct 37 by the negative pressure around the traveling wind A2. At least a portion of the traveling wind A1 is sucked and directed to the oil pan 17 of the drive unit 15 together with the traveling wind A1. As a result, the drive unit 15 is more effectively cooled by the traveling wind A.

  Further, as described above, the introduction openings 52 and 53 of the front and rear ducts 37 and 38 are opened toward the front lower side, respectively. In particular, the introduction opening 53 of the rear duct 38 is formed in front of the under cover 22. It is located below the lower surface of the front portion of the undercover body 23.

  For this reason, when the vehicle 1 is traveling, more of the traveling wind A flowing under the under cover body 23 toward the rear of the vehicle body 2 passes through the introduction openings 52 and 53, and the front and rear ducts 37, 38 flows into the respective flow passages 50 and 51. Therefore, the cooling of the drive unit 15 by the traveling wind A is more effectively achieved.

  On the other hand, the effective cooling of the drive unit 15 by the traveling wind A is achieved by devising the shapes of the front and rear ducts 37 and 38, and no separate guide duct for the vehicle 1 is provided. It ’s enough. Therefore, the effective cooling of the drive unit 15 by the traveling air A can be achieved with a simple configuration.

  As described above, the front and rear ducts 37 and 38 are detachably fixed to the undercover body 23 of the undercover 22.

  For this reason, if the front and rear ducts 37 and 38 are detached from the under cover body 23, the front and rear openings 34 and 35 are opened. Therefore, the front and rear openings 34 and 35 before being opened in this way can be used as some work holes, and can also contribute to the improvement of the moldability of the undercover body 23.

1 Vehicle 2 Car Body 3 Front Wheel 6 Side Member 7 Front Cross Member 8 Midway Cross Member 9 Other Midway Cross Member 10 Radiator Support 12 Frame Member 13 Front Bumper 15 Drive Unit 17 Oil Pan 22 Undercover 23 Undercover Body 24 Side Projection part 34 Front opening 35 Rear opening 37 Front duct 38 Rear duct 40 Square tube body 41 Square tube body 50 Flow passage 51 Flow passage 52 Introduction opening 53 Introduction opening 54 Discharge opening 55 Discharge opening 58 Front plate 58a ) Upper edge 58b Upper edge 60 (in the far side) 60 Guide plate A Running wind W1 (Inner side) inner width W2 (Inner side) inner width

Claims (1)

A traveling drive unit that is positioned at a part of the entire width in the width direction of the vehicle body and supported by the skeleton member of the vehicle body, and is supported by the skeleton member at the front lower side and / or below the lower part of the drive unit. An under cover body that extends in the width direction and the front-rear direction of the vehicle body, and the under cover body is positioned in front of the lower rear end of the drive unit and in the other part in the width direction of the vehicle body. The undercover body protrudes rearward and upward, and the undercover body is opened at each end of the wing toward the lower side of the undercover body, so that an introduction opening that allows the introduction of running wind is formed. Under the vehicle body in a vehicle having a front duct and a rear duct for traveling wind guidance, in which a discharge opening is formed at each projecting end portion toward the rear upper side so that the traveling wind can be discharged. In the structure,
As seen from the line of sight along the longitudinal direction of the vehicle body, at least a part of the discharge opening of the front duct and the front plate of the rear duct overlap with each other, and the width of the vehicle body among the upper edge of the front plate of the rear duct The upper edge of the gawa near the lower part of the drive unit in the direction is positioned lower than the upper edge of the far gawa,
In a vehicle characterized in that the inner width dimension in the vertical direction of the side near the lower part of the drive unit in the width direction of the vehicle body is smaller than the inner width dimension of the far side in the discharge opening of the rear duct. Lower body structure.

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