JP2012240651A - Undercover structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an undercover structure that prevents foreign matters from depositing or being kept deposited on the undercover.SOLUTION: The undercover is composed of a lower cover 54 as a lower member, and an upper cover 56 as an upper member. The undercover structure 10 covers a power unit chamber housing a power unit from below. The lower cover 54 has an air intake port 52 communicating with the inside and outside of the power unit chamber. A stabilizing bar 30 is arranged to apply vibrations to the undercover by an input from front wheels.

Description

  The present invention relates to an undercover structure.

  A structure in which cooling air is guided from a window provided in an under cover to an intercooler is known (see, for example, Patent Document 1).

JP-A-5-301528

  By the way, there is a concern that foreign matters such as snow and mud enter from the window portion of the duct and the foreign matters accumulate in the vehicle body inside the under cover.

  An object of the present invention is to obtain an undercover structure capable of suppressing the accumulation of foreign matters on the undercover or the maintenance of the accumulated state.

  An under cover structure according to a first aspect of the present invention is an under cover that covers a space that opens downward from a vehicle and that has a window portion that communicates the inside and outside of the space, and imparts vibration to the under cover. Vibration applying means.

  In the undercover structure according to the first aspect, when the undercover is vibrated by the vibration applying means, deposits on the undercover are removed (dissolved) by dropping or the like. Further, the vibration of the under cover makes it difficult for foreign matter to accumulate on the under cover.

  Thus, in the undercover structure according to the first aspect, it is possible to suppress the accumulation of foreign matters on the undercover or the maintenance of the accumulated state.

  The undercover structure according to a second aspect of the present invention is the undercover structure according to the first aspect, wherein the vibration applying means includes a stabilizer bar for connecting the left and right wheel suspension devices so that rolling of the vehicle is suppressed. And connecting means for connecting the stabilizer bar and the under cover so that vibration of the stabilizer bar is directly or indirectly transmitted to the under cover.

  In the undercover structure according to the second aspect, when the stabilizer connecting the left and right suspensions vibrates due to input from the wheels (road surface), the undercover connected to the stabilizer bar by the connecting means vibrates. Thereby, it can suppress that a foreign material accumulates on an undercover, or this deposition state is maintained, without using a dedicated excitation source.

  The undercover structure according to a third aspect of the present invention is the undercover structure according to the first or second aspect, wherein the rotation of the portion extending along the vehicle width direction of the stabilizer bar is used for bending the undercover. Further provided was a bending means for converting.

  In the under cover structure according to claim 3, when a portion extending in the vehicle width direction of the stabilizer bar rotates (including torsion) with the vertical movement of the wheel, the rotation is converted into the bending of the under cover by the bending applying means. Is done. Thereby, the under cover is bent, that is, reciprocated in the thickness direction. Due to the bending of the under cover, foreign substances accumulated on the under cover are efficiently removed.

  The undercover structure according to a fourth aspect of the present invention is the undercover structure according to any one of the first to third aspects, wherein the bending applying means is configured such that the undercover is bent downward. It includes an engagement structure that engages the under cover side and the stabilizer bar side so that rotation of the portion extending along the vehicle width direction of the stabilizer bar is converted into bending of the under cover. Has been.

  In the under cover structure according to the fourth aspect, when the under cover is bent by, for example, the weight of foreign matter, the engaging structure is engaged. When the portion extending in the vehicle width direction of the stabilizer bar rotates (including twist) in this engaged state, this rotation is transmitted to the under cover via the engaging structure, and the under cover is bent as described above ( Reciprocated in the thickness direction). When the under cover is not bent due to the weight of foreign matter, the under cover is not restrained by the stabilizer bar by the engagement structure, and therefore, the under cover does not receive unnecessary bending.

  The undercover structure according to a fifth aspect of the present invention is the undercover structure according to the fourth aspect, wherein the undercover is positioned on the lower side of the stabilizer bar and on the upper side of the stabilizer bar. The connecting means is configured by sandwiching the stabilizer bar between the upper member and the lower member, and the engagement structure is provided on the side of the stabilizer bar. A convex portion provided, and a concave portion or a hole portion that is provided on the upper member of the under cover and fits into the convex portion when the upper member is bent downward, are configured.

  In the under cover structure according to claim 5, the connecting means is configured by sandwiching the stabilizer bar directly or indirectly between the upper member and the lower member of the under cover, and the vibration of the stabilizer bar is transmitted to the under cover. Is done. On the other hand, when the upper member of the under cover bends downward due to the weight of foreign matter or the like, the convex portion of the stabilizer bar enters the concave portion or hole portion of the upper member. Thereby, the rotation of the stabilizer bar is efficiently transmitted to the under cover as a bend through the convex portion, the concave portion or the hole portion, and the accumulation of foreign matters on the under cover is efficiently eliminated. In particular, since the convex portion is provided on the side of the stabilizer bar that is the rotation side, the bending of the under cover due to the rotation of the stabilizer bar can be increased.

  As described above, the undercover structure according to the present invention has an excellent effect that it is possible to suppress the accumulation of foreign matters on the undercover or the maintenance of the accumulated state.

It is a disassembled perspective view which shows the principal part of the undercover structure which concerns on embodiment of this invention. It is a top view showing typically an undercover structure concerning an embodiment of the present invention. It is a side view showing typically an undercover structure concerning an embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which expands and shows the principal part of the undercover structure which concerns on embodiment of this invention, Comprising: (A) is a sectional side view which shows the state before a deformation | transformation of a cover upper, (B) is a deformation | transformation state of a cover upper. It is a sectional side view shown.

  An undercover structure 10 according to an embodiment of the present invention will be described with reference to FIGS. First, a schematic configuration including a front suspension structure and a cooling unit structure of the automobile V to which the under cover structure 10 is applied will be described, and then a specific configuration of the under cover structure 10 will be described. Note that an arrow FR appropriately shown in the drawing indicates a forward direction in the vehicle longitudinal direction, an arrow UP indicates an upward direction in the vehicle vertical direction, and an arrow W indicates a vehicle width direction.

(Schematic structure of automobile)
FIG. 2 is a schematic plan view showing the front portion of the automobile V to which the undercover structure 10 is applied, and FIG. 3 shows the front portion of the automobile V in a schematic side view. Has been. As shown in these drawings, a power unit chamber 14 as a power unit space in which the power unit 12 is disposed is disposed on the front end side of the vehicle V in the vehicle front-rear direction. The power unit 12 in this embodiment includes an engine that is an internal combustion engine and an electric motor as drive sources for driving the front wheel Wf as a wheel. Therefore, the vehicle V is a hybrid vehicle having two drive sources.

  Specifically, the power unit 12 includes a horizontal engine having a crankshaft along the vehicle width direction and a transaxle connected to the engine so as to be able to transmit power. The transaxle includes an electric motor, a generator (not shown), a power split mechanism, a transmission such as a continuously variable transmission, and the like. In this embodiment, the transaxle includes, for example, an electric motor, a generator, and an inverter electrically connected to a battery. Therefore, the power unit according to this embodiment can also be regarded as a power plant. The transaxle may be a normal transaxle such as a manual transmission (MT), a torque converter type automatic transmission (AT), a continuously variable transmission (CVT), or the like. The power unit 12 is supported by a vehicle body (a frame member such as a front side member) and a sub frame (suspension member) 15 via a mount member at a portion not shown.

  The subframe 15 includes a pair of left and right side rails 16, a rear cross member 18 that bridges between the rear ends of the left and right side rails 16, and a front cross member 20 that bridges the front (intermediate portion) of the left and right side rails 16. And the main part. That is, the subframe 15 is a well-shaped frame having a substantially rectangular frame shape in plan view.

(Front suspension structure)
The left and right side rails 16 support the inner ends in the vehicle width direction of the lower arms 24 constituting the front suspension 22 as a suspension device so as to be able to swing around an axis along the front-rear direction. Although illustration is omitted, the lower arm 24 is connected to an axle bracket that rotatably supports the hub of the front wheel Wf.

  The front suspension 22 includes a shock absorber 26 in which a vehicle body side member (for example, a cylinder) 26B supported by the vehicle body and a wheel side member (for example, a rod) 26A connected to an axle bracket are extendable and contractible. A compression coil spring 28 is provided in a compressed state between the wheel side member 26A of the shock absorber 26 and the vehicle body side member 26B.

  Further, a stabilizer bar (anti-roll bar) 30 is bridged between the left and right front suspensions 22. As shown in FIG. 1, the stabilizer bar 30 includes a pair of left and right suspension connection bars 30 </ b> L extending rearward from both ends of a torsion bar 30 </ b> T extending in the vehicle width direction. The stabilizer bar 30 is connected to the wheel side member 26A via a stabilizer link 32 at the rear ends of the left and right suspension connection bars 30L.

  Further, as shown in FIGS. 1 and 2, the torsion bar 30T is rotatably supported by the side rail 16 (without hindering torsion) by the stabilizer bush 34 at two locations on the left and right. As a result, the stabilizer bar 30 is configured such that the torsion bar 30T is elastically twisted by the stroke difference between the left and right front wheels Wf, and the roll of the automobile V is suppressed by the restoring force.

(Cooling unit structure)
As described above, the power unit chamber 14 in which the power unit 12 including the engine that is an internal combustion engine is disposed can be regarded as a so-called engine room. As shown in FIG. 3, the rear end portion of the power unit chamber 14 in the vehicle front-rear direction is defined by a dash panel 36 that separates from the vehicle compartment C. The dash panel 36 is joined to the front end of the floor panel 38 in the vehicle front-rear direction. In the center of the floor panel 38 in the vehicle width direction, a “U” -shaped floor tunnel 40 is formed that opens downward in the vehicle vertical direction in a front sectional view.

  In the automobile V to which the undercover structure 10 is applied, a cooling unit 42 is provided so as to close the front opening end 40A of the floor tunnel 40 in the vehicle front-rear direction. Therefore, in this embodiment, the cooling unit 42 is disposed on the rear side in the vehicle front-rear direction with respect to the power unit 12. The cooling unit 42 includes a radiator that is an air-cooled heat exchanger that circulates cooling water between the power unit 12 (engine and electric motor thereof) and cools the power unit 12, and an air conditioner (not shown). It is comprised including at least one (both in this embodiment) of the condenser (condenser) which is an air-cooled heat exchanger that constitutes.

  A fan unit 44 is provided on the rear side of the cooling unit 42 in the vehicle front-rear direction. Due to the operation of the fan unit 44, cooling air for exchanging heat with cooling water passes through the cooling unit 42 from the front side in the vehicle front-rear direction to the rear side. The cooling air after heat exchange with the cooling water is discharged to the bottom of the floor through the downward opening end 40B of the floor tunnel 40.

  Air introduced from an air intake 52 formed in an under cover 50 described later is guided to the cooling unit 42 as cooling air.

  Hereinafter, the under cover structure 10 having a function of guiding cooling air for performing heat exchange with the refrigerant (cooling water circulating through the radiator, air conditioner refrigerant) will be described in detail.

(Configuration of under cover structure)
As shown in FIG. 1, the under cover structure 10 includes an under cover 50 that covers the power unit chamber 14 from below in the vehicle vertical direction. The under cover 50 is provided with the air intake 52 described above facing the road surface side. In this embodiment, the under cover 50 has a two-member configuration of a cover lower 54 as a lower member and a cover upper 56 as an upper member. This will be specifically described below.

  The cover lower 54 functions as a cover main body that covers the power unit chamber 14 as a whole from below. The cover lower 54 has an inclined wall portion 54S that is inclined so as to face forward and downward at an intermediate portion in the front-rear direction, and a window portion 54W that forms an air intake port 52 is formed in the inclined wall portion 54S. The window portion 54W is a rectangular cutout portion that is long in the vehicle width direction.

  A front portion 54F that is a front portion of the cover lower 54 with respect to the inclined wall portion 54S and a rear portion 54R that is a rear portion of the inclined wall portion 54S are configured substantially along a horizontal plane. The front portion 54F and the rear portion 54R are offset in the vertical direction so that the front portion 54F is positioned on the upper side by an inclined wall portion 54S formed therebetween.

  Although not shown, the cover lower 54 is mounted on the vehicle body (the subframe 15 and the bumper) by a clip or a bolt inserted into a clip hole 54H (see FIG. 1) disposed along the peripheral edge of the front portion 54F and the rear portion 54R. A fixed cover). In this state, in the cover lower 54, the front part 54F and the front part of the inclined wall part 54S are located in front of the subframe 15 and project outward from the subframe 15 in the vehicle width direction. The rear portion 54 </ b> R is located between the side rails 16. The further rear portion of the rear portion 54R extends so as to overlap the left and right side rails 16 and the rear cross member 18 in plan view.

  The cover upper 56 is formed in a substantially rectangular shape in plan view, and covers from the upper side from the rear part of the front part 54F to the front part of the rear part 54R in the cover lower 54. The cover upper 56 includes a front fixing portion 56F that is overlapped with the front portion 54F of the cover lower 54, a rear fixing portion 56R that is overlapped with the rear portion 54R, an inclined wall portion 56S that is overlapped with the inclined wall portion 54S, and a cover lower. 54 and a sandwiching portion 56P that sandwiches the torsion bar 30T of the stabilizer bar 30.

  The front fixing portion 56F and the rear fixing portion 56R are formed with a plurality of clip holes 56O that match the clip holes 54O formed in the cover lower 54, respectively. The cover upper 56 is fixed to the cover lower 54 at the front fixing portion 56F and the rear fixing portion 56R by clips, bolts, welding, or the like (not shown) inserted through the clip holes 54O, 56O.

  The inclined wall portion 56 </ b> S is formed with a window portion 56 </ b> W that forms an air intake 52 with the window portion 54 </ b> W of the cover lower 54. In this embodiment, a plurality (three in the illustrated example) of window portions 56W are formed side by side in the vehicle width direction. Each window part 56W is arrange | positioned in the window part 54W, and has prescribed | regulated the flow-path cross section (periphery | periphery) of the air intake 52 substantially.

  The sandwiching portion 56P sandwiches an under cover mounting bush 58 attached to the torsion bar 30T of the stabilizer bar 30 between the vicinity of the boundary between the inclined wall portion 54S and the rear portion 54R of the cover lower 54. The under cover mounting bush 58 is formed, for example, in a ring shape from synthetic rubber or the like, and is attached to the torsion bar 30T by fitting or the like at a portion passing over the cover lower 54 in the torsion bar 30T. In this embodiment, the under cover mounting bush 58 is formed between the cover lower 54 and the cover upper 56 so that a vertical gap (play) is formed between the under cover mounting bush 58 and the cover upper 56 or the cover lower 54. It is sandwiched between them.

  When the stabilizer bar 30 vibrates in the vertical direction by the input from the front wheel Wf, the under cover mounting bush 58 covers the cover lower 54 (the vicinity of the boundary between the inclined wall portion 54S and the rear portion 54R) and the cover upper 56 (the sandwiching portion 56P). ). Thus, the vertical vibration of the stabilizer bar 30 is transmitted to the cover lower 54 and the cover upper 56 via the under cover mounting bush 58, and the cover lower 54 and the cover upper 56 are vibrated up and down. Therefore, in this embodiment, the under cover mounting bush 58 and the cover upper 56 (two-member configuration of the under cover 50) correspond to the connecting means of the present invention, and the connecting means and the stabilizer bar 30 correspond to the vibration applying means.

  Further, the under cover mounting bush 58 is fixed to the torsion bar 30T by a fixing structure such as a key or the like so as to rotate integrally with the fitting portion of the torsion bar 30T of the stabilizer bar 30. A fitting projection 58T as a convex portion protrudes upward from the upper end of the under cover mounting bush 58, and a fitting hole 56H as a concave portion or hole in which the fitting projection 58T can advance and retreat is provided in the sandwiching portion 56P. Is formed. When the cover upper 56 is bent downward as shown in FIG. 4B due to a load of a predetermined value or more from above, the fitting protrusion 58T is fitted into the fitting hole 56H. ), The fitting protrusion 58T is not fitted into the fitting hole 56H. The load greater than or equal to a predetermined value is designed (set) as a load due to the mass of the foreign matter when foreign matter such as snow or mud accumulates on the cover upper 56.

  When the torsion bar 30T of the stabilizer bar 30 is rotated or twisted as shown in FIG. 4B with the fitting protrusion 58T fitted in the fitting hole 56H, the fitting protrusion 58T is moved to the cover upper 56. The cover upper 56 is bent (bent) in side view while engaging with the hole edge of the fitting hole 56H. That is, the cover upper 56 formed with the under cover mounting bush 58 having the fitting protrusion 58T and the fitting hole 56H corresponds to a bending applying means for converting the rotation or twist of the stabilizer bar 30 into the bending of the cover upper 56. In this embodiment, the fitting protrusion 58T and the fitting hole 56H correspond to the engaging structure.

  Next, the operation of the embodiment will be described.

  In the automobile V to which the under cover structure 10 having the above configuration is applied, the cooling water circulates between the power unit 12 and the cooling unit 42 when traveling. The cooling water is cooled by heat exchange with air in the cooling unit 42. Further, when the air conditioner is operated, the refrigerant circulates in the order of the cooling unit 42, the expansion valve, the evaporator, and the compressor to form a refrigeration cycle. The cooling unit 42 functions as a condenser that cools and condenses the refrigerant by heat exchange with air.

  The heat exchange in the cooling unit 42 is performed by the running air of the automobile V or the air flow (cooling air) generated by the operation of the fan unit 44 flowing through the air side flow path of the cooling unit 42. For example, when the cooling ECU (not shown) determines that the vehicle speed of the vehicle V is equal to or lower than a predetermined vehicle speed and the cooling water temperature is equal to or higher than a predetermined temperature, the fan unit 44 is operated by the cooling ECU. Then, the air under the floor is guided to the cooling unit 42 through the air intake 52 by the suction force of the fan unit 44.

  Further, for example, when the cooling ECU determines that the vehicle speed of the automobile V has exceeded a predetermined vehicle speed, the fan unit 44 is stopped by the cooling ECU. Then, the traveling wind of the automobile V is guided to the cooling unit 42 through the air intake 52 and passes through the cooling unit 42.

  By the way, in this structure which takes in cooling air from the air intake 52 formed under the floor, there is a concern that foreign matters such as snow and mud enter through the air intake 52 and the foreign matters accumulate on the under cover 50. The This excessive accumulation of foreign matters causes interference with the road surface (curbstone) or the like due to the undercover 50 being uncoupled from the vehicle body by the clip, or by bending (hanging down) the undercover 50 downward. In particular, the under cover 50 is structured to be coupled to the vehicle body at the clip hole 54 </ b> H formed in the peripheral portion of the cover lower 54, so that the bending is likely to increase at the center portion of the under cover 50.

  Here, in the undercover structure 10, since the undercover 50 is connected to the stabilizer bar 30, when the stabilizer bar 30 vibrates up and down by an input from the front wheel Wf (see the arrow UD in FIG. 4A), The vibration is transmitted to the under cover 50. Thereby, accumulation (adhesion) of the foreign matter E on the under cover 50 is suppressed by vibration, or the foreign matter E deposited on the under cover 50 is dropped by vibration. Further, since the under cover 50 sandwiches the torsion bar 30T from above and below by the cover lower 54 and the cover upper 56, downward deflection is suppressed by the stabilizer bar 30.

  Further, in the under cover structure 10, when foreign matter such as snow or mud accumulates on the cover upper 56, the portion including the sandwiching portion 56P of the cover upper 56 bends downward. Then, as shown in FIG. 4B, the fitting protrusion 58T of the under cover mounting bush 58 enters the fitting hole 56H formed in the cover upper 56. In this state, when the left and right front wheels Wf are displaced up and down, the torsion bar 30T of the stabilizer bar 30 rotates or twists (see arrow R in FIG. 4B). This twisting and rotation of the torsion bar 30T causes the cover upper 56 to be bent as indicated by an imaginary line in FIG. 4B due to the engagement between the fitting protrusion 58T and the edge of the fitting hole 56H in the cover upper 56. Converted.

  That is, as the front wheel Wf moves up and down, the cover upper 56 is repeatedly bent up and down (see the arrow BD in FIG. 4B), whereby the foreign matter E accumulated on the cover upper 56 is decomposed. Or it is dropped efficiently without being disassembled. Further, the bending of the cover upper 56 is also transmitted to the cover lower 54, and the foreign matter E deposited on the cover lower 54 is efficiently dropped without being decomposed or decomposed. As a result, foreign matter is removed from the under cover 50.

  As described above, in the under cover structure 10 according to the present embodiment, it is possible to suppress the accumulation of foreign matters on the under cover 50 or the maintenance of the accumulated state. Thereby, the malfunction resulting from the bending of the undercover 50 is prevented or effectively suppressed.

  The under cover structure 10 is configured to apply vibration to the under cover 50 using the stabilizer bar 30 for suppressing the roll of the automobile V. For this reason, without using a dedicated excitation source for applying vibration to the under cover 50, it is possible to suppress the accumulation of foreign matter on the under cover 50 or the maintenance of the accumulated state as described above. it can.

  Further, the under cover structure 10 is configured not only to use the vibration of the stabilizer bar 30 but also to convert the twist and rotation into the bending (deflection) of the cover upper 56. Even when it is deposited, the foreign matter can be efficiently removed from the under cover 50. In addition, the bending of the cover upper 56 due to the twisting or rotation of the stabilizer bar 30 is caused by fitting the fitting protrusion 58T into the fitting hole 56H when foreign matter is accumulated on the cover upper 56. When no foreign matter is accumulated on the under cover 50 or when the amount of foreign matter is small, unnecessary bending (load) is not applied to the cover upper 56. Further, since the fitting protrusion 58T protruding from the under cover mounting bush 58 is fitted into the cover upper 56 fitting hole 56H, the distance from the rotation axis of the torsion bar 30T to the load input point to the cover upper 56 Is long. For this reason, the amount of bending of the cover upper 56 per rotation angle of the stabilizer bar 30 is large, and the foreign matter removal effect is high.

  Further, by forming the under cover 50 as a two-member structure of the cover lower 54 and the cover upper 56, the cover upper 56 can suppress the under cover 50 from being bent downward, and the cover upper 56 can be bent by the accumulation of foreign matter. Only in such a case, a configuration has been realized in which the cover upper 56 has the effect of bending due to the twisting and rotation of the torsion bar 30T.

  In the above-described embodiment, the stabilizer bar 30 is an example of the vibration source of the vibration applying unit of the present invention. However, the present invention is not limited to this, and for example, the shock absorber constituting the front suspension 22 ( 26, the lower arm 24, etc.) may be a vibration source of the vibration applying means of the present invention, or may be a structure provided with a dedicated vibration source.

  Further, in each of the above-described embodiments, the example in which the under cover 50 has the two-member configuration of the cover lower 54 and the cover upper 56 has been described. However, the present invention is not limited to this, and for example, the under cover is a single member. You may employ | adopt the structure provided with. In this case, for example, the torsion bar 30T may be coupled to the undercover so as to be rotatable (twisted), or may be configured to be fixed.

  Furthermore, in each of the above-described embodiments, the example in which the power unit 12 including the internal combustion engine and the motor is disposed in the power unit chamber 14 positioned in front of the vehicle interior C is shown, but the present invention is not limited to this, for example, The power unit 12 may be configured not to include a motor (general FF vehicle, FR vehicle, 4WD vehicle or other engine vehicle), and the power unit 12 including the internal combustion engine is disposed in the power unit chamber located behind the vehicle compartment C. It is good also as a structure, and it is good also as a structure in which a power unit does not contain an internal combustion engine.

  In addition, the present invention is not limited to the configuration of the above-described embodiment, and it is needless to say that various modifications can be made without departing from the scope of the invention.

10 Undercover structure 14 Power unit room (space)
22 Front suspension (suspension device)
30 Stabilizer bar 30T Torsion bar (part extending in the vehicle width direction)
50 Undercover 52 Air intake (window)
54 Cover lower (lower member)
54W / 56W Window part 56 Cover upper (upper member, bending imparting means)
56H Fitting hole (recess or hole, engagement structure)
58 Undercover mounting bush (bending application means)
58T Mating protrusion (convex, engaging structure)
V Automobile (vehicle)
Wf Front wheel

Claims (5)

An under cover that covers a space that opens downward in the vehicle from below and that has a window portion that communicates the inside and outside of the space;
Vibration applying means for applying vibration to the undercover;
Under cover structure with The vibration applying means includes
A stabilizer bar that connects the suspension device of the left and right wheels so that the roll of the vehicle is suppressed;
Connecting means for connecting the stabilizer bar and the under cover so that vibration of the stabilizer bar is directly or indirectly transmitted to the under cover;
The undercover structure according to claim 1, comprising:   3. The undercover structure according to claim 1, further comprising a bending imparting unit that converts rotation of a portion of the stabilizer bar extending along a vehicle width direction into bending of the undercover.   When the under cover is bent downward, the bending applying means is configured to convert the rotation of the portion extending along the vehicle width direction of the stabilizer bar into the bending of the under cover. The under cover structure according to any one of claims 1 to 3, wherein the under cover structure includes an engagement structure for engaging a side with the stabilizer bar side. The under cover includes a lower member located below the stabilizer bar, and an upper member located above the stabilizer bar.
The connecting means is configured by sandwiching the stabilizer bar between the upper member and the lower member,
The engaging structure includes a convex portion provided on the stabilizer bar side, and a concave portion or a hole portion that is provided on the upper member of the under cover and that fits into the convex portion when the upper member is bent downward. The undercover structure according to claim 4, comprising:

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