Protective cover fixation structure for vehicle

Abstract

To provide a protective cover fixation structure for a vehicle capable of, even when only a to-be-fixed region which constitutes a part of a protective cover is fixed to a motor unit, the rigidity of a portion away from the to-be-fixed region of the protective cover is prevented from getting much lower than the rigidity of the to-be-fixed region.SOLUTION: A protective cover 45 that covers an undersurface of an electric motor unit includes: tabular parts 45a and 45b that cover the undersurface of the motor unit; at least one of to-be-fixed parts 46, 47, 48, or 49 that is fixed to the undersurface of the motor unit; and plural beads 57 and 59 that are provided on the tabular parts. The protective cover has a to-be-fixed region including all to-be-fixed parts, and overhung regions each of which is a region interposed between one lateral edge in a vehicle width direction of each of the tabular parts and the to-be-fixed region. A sum total of lengths of the beads per unit area in the overhung regions is larger than a sum total of lengths of the beads per unit area in the to-be-fixed region.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a vehicle protective cover fixing structure. [Background technology]

[0002] The following Patent Documents 1 and 2 disclose a vehicle equipped with an electric motor and a protective cover that covers the lower surface of the motor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2021 / 250779 [Patent Document 2] JP 2018-158602 A Summary of the Invention [Problem to be solved by the invention]

[0004] When only the fixed portion provided on a part of the protective cover in the above Patent Documents 1 and 2 is fixed to the motor, the rigidity of the portion of the protective cover away from the fixed portion is likely to be lower than the rigidity of the fixed portion and the area surrounding the fixed portion.

[0005] Taking into consideration the above-mentioned facts, the present invention aims to obtain a vehicle protective cover fixing structure that can prevent the rigidity of the portion of the protective cover away from the fixed area from being significantly lower than the rigidity of the fixed area, even when only the fixed area that constitutes part of the protective cover is fixed to the motor unit. [Means for solving the problem]

[0006] The vehicle protective cover fixing structure of claim 1 covers the underside of a motor unit having an electric motor mounted on a vehicle, and the protective cover exposed at the underside of the vehicle comprises a plate-shaped portion covering the underside of the motor unit, at least one fixed portion provided on the plate-shaped portion and fixed to the underside, and a plurality of bead portions provided on the plate-shaped portion, the protective cover having a fixed region including all of the fixed portions, and an overhang region which is a region between one side edge portion in the vehicle width direction of the plate-shaped portion and the fixed region and has a larger dimension in the vehicle width direction than the region between the other side edge portion in the vehicle width direction of the plate-shaped portion and the fixed region, and the total length of the bead portions per unit area in the overhang region is greater than the total length of the bead portions per unit area in the fixed region.

[0007] In the vehicle protective cover fixing structure of claim 1, the fixed portion of the protective cover is fixed to the underside of a motor unit having an electric motor. On the other hand, the overhang region of the protective cover is not fixed to the underside of the motor unit. The total length of the bead portions per unit area in the overhang region is greater than the total length of the bead portions per unit area in the fixed region. That is, the degree of rigidity of the overhang region due to the bead portions is greater than the degree of rigidity of the fixed region due to the bead portions. Therefore, although only the fixed portion of the protective cover is fixed to the motor unit, the vehicle protective cover fixing structure of claim 1 can prevent the rigidity of the overhang region of the protective cover from being significantly lower than the rigidity of the fixed region. Therefore, even if, for example, a stone or the like on the road surface kicked up by the vehicle hits the overhang region from below, there is little risk that the overhang region will be significantly deformed upward or that the lower part of the motor unit will be damaged due to the deformation of the overhang region.

[0008] The vehicle protective cover fixing structure of claim 2 is the same as claim 1, wherein a through hole penetrating the plate-like portion in a thickness direction is provided in the overhang region.

[0009] A through hole is provided in the overhang region of the vehicle protective cover fixing structure of claim 2. However, the degree of rigidity of the overhang region due to the bead portion is greater than the degree of rigidity of the fixed region due to the bead portion. Therefore, there is no risk that the rigidity of the overhang region of the protective cover will be significantly lower than the rigidity of the fixed region due to the provision of the through hole in the overhang region.

[0010] The vehicle protective cover fixing structure according to claim 3 is based on claim 1 or 2, and further includes a flange provided on the lower surface of the motor unit, the flange protruding toward a portion of the protective cover where the bead portion is not provided.

[0011] In the vehicle protective cover fixing structure of claim 3, a flange is provided on the underside of the motor unit, protruding toward a portion of the protective cover where the bead portion is not provided. Therefore, the flange of the motor unit prevents the portion of the protective cover where the bead portion is not provided from moving significantly upward. Therefore, for example, when an upward external force is applied to the underside of the portion of the protective cover where the bead portion is not provided, the portion of the protective cover is unlikely to deform.

[0012] The vehicle protective cover fixing structure according to claim 4 is the same as claim 1 or 2, in which a vibration-damping material having an elastic portion made of an elastic material is provided on the upper surface of the overhang region.

[0013] In the vehicle protective cover fixing structure of claim 4, a vibration-damping material having an elastic portion made of an elastic material is provided on the upper surface of the protective cover, so that even if the overhang area is deformed upward when, for example, a stone or the like on the road surface kicked up by the vehicle hits the overhang area from below, the overhang area is prevented from exerting a large force on the underside of the motor unit. Effect of the Invention

[0014] As described above, the vehicle protective cover fixing structure of the present invention has the excellent effect of preventing the rigidity of the portion of the protective cover away from the fixed area from being significantly lower than the rigidity of the fixed area, even when only the fixed area constituting part of the protective cover is fixed to the motor unit. [Brief description of the drawings]

[0015] [Figure 1] 1 is a side view of a vehicle protective cover fixing structure according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a bottom view of the vehicle protective cover fixing structure. [Diagram 3] FIG. 2 is an exploded perspective view of the e-axle, the protective cover, the first vibration-damping sheet, and the second vibration-damping sheet. [Figure 4] FIG. 4 is a cross-sectional view taken along the line 4-4 of FIG. [Diagram 5] FIG. 13 is a bottom view of the protective cover of the first modified example. [Figure 6] FIG. 13 is a bottom view of the protective cover of the second modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of a vehicle protective cover fixing structure 70 (hereinafter referred to as fixing structure 70) according to the present invention will be described with reference to Figures 1 to 4. Arrow FR, appropriately shown in the figures, indicates the front side in the vehicle longitudinal direction, arrow LH indicates the left side in the vehicle lateral direction, and arrow UP indicates the upper side in the vehicle vertical direction.

[0017] 1, a battery 15 is provided on the body of a vehicle 10 equipped with a fixing structure 70 of this embodiment. Furthermore, an e-axle (motor unit) 20 located behind the battery 15 is provided on the vehicle body.

[0018] 2 and 3, the e-axle 20 includes a hollow case 21. The metal case 21 includes a central component 23, a left component 30, and a right component 35.

[0019] The central component 23 includes a box-shaped main body 24 with both left and right ends open, flanges 25, 26 provided on both left and right ends of the main body 24, and a boss 28 provided on the underside of the main body 24. The annular flanges 25, 26 are provided around the entire circumference of the main body 24 and protrude from the main body 24 to the outer periphery. A plurality of female threaded holes 27 are provided on the left side surface of the flange 25. A plurality of female threaded holes (not shown) are provided on the right side surface of the flange 26. Female threaded holes 29 are formed on the lower end surfaces of four cylindrical bosses 28 provided on the underside of the main body 24.

[0020] The left side component part 30 includes a box-shaped main body part 31 with a closed left end and an open right end, and a flange 32 provided at the right end of the main body part 31. The annular flange 32 is provided around the entire circumference of the main body part 31 and protrudes from the main body part 31 to the outer periphery. The flange 32 has a plurality of through holes 33.

[0021] The right-side component 35 includes a box-shaped main body 36 with a closed right end and an open left end, and a flange 37 provided at the left end of the main body 36. The annular flange 37 is provided around the entire circumference of the main body 36 and protrudes outward from the main body 36. The flange 37 has a plurality of through holes 38.

[0022] With the flange 32 of the left side component 30 in contact with the flange 25 of the central component 23, bolts 40 inserted into each of the through holes 33 from the left side are screwed into each of the female threaded holes 27, thereby fixing the flange 25 and the flange 32. Furthermore, with the flange 37 of the right side component 35 in contact with the flange 26 of the central component 23, bolts 41 inserted into each of the through holes 38 from the right side are screwed into each of the female threaded holes provided in the flange 26, thereby fixing the flange 26 and the flange 37.

[0023] The case 21 thus configured is supported by the vehicle body. The e-axle 20 includes a gear, an electric motor, and an inverter (all not shown) provided in the internal space of the case 21. The electric motor operates using power from the battery 15. That is, the vehicle 10 of this embodiment is, for example, an HV (Hybrid Vehicle) or an EV (Electric Vehicle). Furthermore, an axle protruding from the case 21 to the left of the main body 31 through an opening (not shown) provided on the left side surface of the main body 31, and an axle protruding from the case 21 to the right of the main body 36 through an opening (not shown) provided on the right side surface of the main body 36 are connected to the left and right rear wheels (not shown).

[0024] As shown in Figs. 1 to 3, a protective cover 45 is provided directly below the case 21. The protective cover 45 of this embodiment is an integrally molded metal product. The planar shape of the protective cover 45 is approximately trapezoidal. The protective cover 45 includes a plate-shaped base portion (plate-shaped portion) 45a that is approximately parallel to the horizontal direction, and a plate-shaped inclined portion (plate-shaped portion) 45b that constitutes the front end portion of the protective cover 45 and is inclined relative to the base portion 45a in a side view. Four recesses 45d are provided on the bottom surface of the protective cover 45, and fixing holes (fixed portions) 46, 47, 48, and 49 are provided on the bottom surface of each recess 45d. The fixing hole 49 is located at the rightmost position among the four fixing holes 46, 47, 48, and 49. The fixing hole 46 is located at the leftmost position among the four fixing holes 46, 47, 48, and 49. As shown in Figs. 2 and 3, a part of the protective cover 45 is surrounded by a straight line LRE that passes through the right end of the fixing hole 49 and extends in the front-rear direction, and a straight line LLE that passes through the left end of the fixing hole 46 and extends in the front-rear direction, forming a fixed region 50. A part of the protective cover 45 is located to the right of the fixed region 50, forming an overhang region 51. As shown in Fig. 3, a part of the protective cover 45 is located to the left of the fixed region 50, forming a side region 52. The left-right distance LL of the side region 52 is longer than the left-right distance LL of the side region 52. Three service holes (through holes) 54, 55, and 56 are provided in the center of the protective cover 45. The service holes 54 and 55 are provided in the overhang region 51.

[0025] Furthermore, the protective cover 45 is provided with four first front-rear bead portions (bead portions) 57 and two second front-rear bead portions (bead portions) 59 that are parallel to the front-rear direction so as to avoid each recess 45d. As is clear from FIG. 2 and FIG. 3, the left-right width of the second front-rear bead portion 59 is larger than the left-right width of the first front-rear bead portion 57. The first front-rear bead portion 57 is provided in the overhang region 51, and the second front-rear bead portion 59 is provided in the fixed region 50. Furthermore, the left-right distance between two adjacent first front-rear bead portions 57 is defined as the first left-right distance, and the left-right distance between two second front-rear bead portions 59 is defined as the second left-right distance. Furthermore, the average value of all the first left-right distances is defined as the first distance, and the average value of all the second left-right distances is defined as the second distance. In this embodiment, since there are two second front-rear bead portions 59, the second left-right distance and the second distance are the same. The first distance is shorter than the second distance. In other words, the number of the first front and rear bead portions 57 per unit area in the overhang region 51 is greater than the number of the second front and rear bead portions 59 per unit area in the fixed region 50. That is, the total length of the first front and rear bead portions 57 per unit area in the overhang region 51 is greater than the total length of the second front and rear bead portions 59 per unit area in the fixed region 50. The first left and right distances may be the same as or different from each other.

[0026] Furthermore, a first vibration-damping sheet (vibration-damping material) 62 and a second vibration-damping sheet (vibration-damping material) 64 are provided between the lower surface of the case 21 and the upper surface of the protective cover 45. The first vibration-damping sheet 62 has a substantially triangular planar shape. The second vibration-damping sheet 64 has three through holes 65, 66, and 67. The first vibration-damping sheet 62 and the second vibration-damping sheet 64 can be formed, for example, of a metal plate and a sheet (elastic portion) made of an elastic material fixed to the lower surface of the metal plate. Note that the first vibration-damping sheet 62 and the second vibration-damping sheet 64 do not need to include a metal plate as long as they include a sheet made of an elastic material. As shown in FIG. 4, the first vibration-damping sheet 62 and the second vibration-damping sheet 64 are placed on the upper surface of the protective cover 45. More specifically, the lower surfaces of the first vibration-damping sheet 62 and the second vibration-damping sheet 64 are fixed to the upper surface of the base portion 45a of the protective cover 45 by adhesive or the like. Furthermore, the through holes 65, 66, 67 face the service holes 54, 55, 56 in the vertical direction, respectively. Therefore, the second vibration-damping sheet 64 does not interfere with each boss 28. In this state, the upper surface of the base 45a is brought into contact with the lower end surface of each boss 28 of the case 21, and each boss 28 faces the fixing holes 46, 47, 48, 49 of the protective cover 45. Furthermore, four bolts (fixing members) 69 inserted from below into the fixing holes 46, 47, 48, 49 are screwed into the female thread holes 29 of each boss 28. As a result, the e-axle 20, the protective cover 45, the first vibration-damping sheet 62, and the second vibration-damping sheet 64 are integrated, and the protective cover 45 is exposed at the bottom of the vehicle 10. Furthermore, the lower ends of flanges 25 and 32 of protective cover 45 are positioned above the upper surface (second vibration-damping sheet 64) of protective cover 45, and the lower ends of flanges 26 and 37 are positioned above the upper surface (first vibration-damping sheet 62, second vibration-damping sheet 64) of protective cover 45 (see FIG. 4). Note that, as shown in FIG. 2, the first front and rear bead portions 57 and the second front and rear bead portions 59 are not provided at the portions corresponding to flanges 26 and 37 of protective cover 45 and the portions corresponding to flanges 25 and 32.

[0027] Among the configuration described above, the e-axle 20, the protective cover 45, the first vibration-damping sheet 62, the second vibration-damping sheet 64, and the bolt 69 are components of the fixing structure 70.

[0028] (Action and Effects) Next, the operation and effects of this embodiment will be described.

[0029] Four points (fixing holes 46, 47, 48, 49) of the fixing region 50 of the protective cover 45 are fixed to the four bosses 28 of the case 21 by bolts 69. On the other hand, the overhang region 51 of the protective cover 45 is not fixed to the case 21. Therefore, the protective cover 45 is supported by the case 21 in a cantilever-like manner with only the fixing region 50 fixed to the case 21 (boss 28). However, the total length of the first front and rear bead portions 57 per unit area in the overhang region 51 is greater than the total length of the second front and rear bead portions 59 per unit area in the fixing region 50. Therefore, the mechanical strength of the overhang region 51 is greater than the mechanical strength of the fixing region 50. That is, the degree of increase in rigidity of the overhang region 51 by the first front and rear bead portions 57 is greater than the degree of increase in rigidity of the fixing region 50 by the second front and rear bead portions 59. Therefore, although only the fixing holes (fixed portions) 46, 47, 48, 49 constituting a part of the protective cover 45 are fixed to the e-axle 20 by the bolts 69, the rigidity of the overhang region 51 is prevented from being significantly lower than the rigidity of the fixed region 50. In particular, the overhang region 51 can exhibit high rigidity against bending of the protective cover 45 about a virtual axis in the left-right direction. Therefore, even if, for example, a stone or the like on the road surface kicked up by the wheels of the vehicle 10 equipped with the fixing structure 70 collides with the overhang region 51 from below, the overhang region 51 is unlikely to be significantly deformed upward or the lower part of the case 21 to be damaged due to the deformation of the overhang region 51.

[0030] Furthermore, service holes 54, 55, 56 are provided in protective cover 45, and through holes 65, 66, 67 are provided in second vibration-damping sheet 64. Therefore, as shown in Fig. 2, a part of the underside of case 21 can be seen from below protective cover 45 through service holes 54, 55, 56 and through holes 65, 66, 67. On the underside of case 21, for example, markings indicating the serial numbers of drain plugs and e-axle 20 are provided. An operator can see the markings indicating the serial numbers of drain plugs and e-axle 20 through service holes 54, 55, 56 and through holes 65, 66, 67.

[0031] In addition, two service holes 54, 55 are provided in the overhang region 51. However, the degree of increase in rigidity of the overhang region 51 due to the first front and rear bead portions 57 is greater than the degree of increase in rigidity of the fixed region 50 due to the second front and rear bead portions 59. Therefore, although the overhang region 51 has the service holes 54, 55, there is no risk that the rigidity of the overhang region 51 will be significantly lower than the rigidity of the fixed region 50.

[0032] Further, the first front and rear bead portion 57 and the second front and rear bead portion 59 are not provided on the left and right side portions of the protective cover 45. Therefore, the left and right side portions of the protective cover 45 have lower mechanical strength than other portions of the protective cover 45. However, the flanges 25 and 32 are located above the right side portion of the upper surface of the protective cover 45, and the flanges 26 and 37 are located above the left side portion of the upper surface of the protective cover 45. Therefore, the flanges 25 and 32 and the flanges 26 and 37 of the e-axle 20 prevent the left and right ends of the protective cover 45 from moving significantly upward. Therefore, for example, when stones or the like on the road surface kicked up by the wheels collide with the left and right sides of the protective cover 45 from below, the left and right sides of the protective cover 45 are unlikely to deform significantly upward.

[0033] Furthermore, a first vibration-damping sheet 62 and a second vibration-damping sheet 64 each having a sheet made of an elastic material are provided on the upper surface of the protective cover 45. Therefore, even if the overhang region 51 is deformed upward due to stones on the road surface kicked up by the wheels, a large force is prevented from being applied from the overhang region 51 to the lower part of the case 21.

[0034] While the fixing structure 70 according to the embodiment has been described above, appropriate design changes are possible without departing from the gist of the present invention.

[0035] For example, the present invention may be embodied in the form of a first modified example shown in FIG. 5. In the drawings showing the first and second modified examples described below, the recesses 45d are omitted. In the protective cover 45A of the first modified example, five first front and rear bead portions (bead portions) 57 are provided in the overhang region 51, and one second front and rear bead portion (bead portion) 76 is provided in each of the fixed region 50 and the side region 52. Furthermore, five left and right bead portions (bead portions) 77 extending along the left and right direction are provided in the protective cover 45A. The left and right bead portions 77 are provided in the fixed region 50, the overhang region 51, and the side region 52. The number of the first front and rear bead portions 57 per unit left and right distance in the overhang region 51 is greater than the number of the second front and rear bead portions 76 per unit left and right distance in the fixed region 50. Therefore, the number (total length) of the first front and rear bead portions 57 and the left and right bead portions 77 per unit area in the overhang region 51 is greater than the number (total length) of the second front and rear bead portions 76 and the left and right bead portions 77 per unit area in the fixed region 50. Therefore, the protective cover 45A of the first modified example can achieve the same effects as the protective cover 45 of the embodiment. Furthermore, since the protective cover 45A is provided with the left and right bead portions 77, the protective cover 45A can achieve higher rigidity than the protective cover 45 against bending about a virtual axis in the front and rear direction.

[0036] The present invention may also be embodied in the form of a second modified example shown in FIG. 6. The protective cover 45B of the second modified example is provided with five first left and right bead portions 83 extending along the left-right direction, and five second left and right bead portions 84 extending along the left-right direction. The left end of each second left and right bead portion 84 is located in the fixed region 50 and is located to the right of the left edge of the protective cover 45B. The total length of the first left and right bead portions 83 and the second left and right bead portions 84 per unit area in the overhang region 51 is greater than the total length of the first left and right bead portions 83 and the second left and right bead portions 84 per unit area in the fixed region 50. Therefore, the protective cover 45B of the second modified example can exert the same effect as the protective cover 45 of the embodiment. Furthermore, the protective cover 45B can exert higher rigidity than the protective cover 45 against bending around a virtual axis in the front-rear direction.

[0037] Furthermore, the number of fixing holes provided in the protective cover, the female threaded holes provided in the e-axle 20, and the bolts inserted into the fixing holes and female threaded holes may be one or a multiple other than four.

[0038] Regardless of the number of fixing holes provided in the protective cover, the fixed region is a part of the protective cover 45 and is surrounded by a straight line LRE extending in the front-rear direction passing through the right end of the rightmost fixing hole and a straight line LLE extending in the front-rear direction passing through the left end of the leftmost fixing hole. Furthermore, the overhang region is a region between one side edge of the protective cover 45 in the vehicle width direction and the fixed region, which has a dimension in the vehicle width direction larger than that of the region between the other side edge of the protective cover 45 in the vehicle width direction and the fixed region.

[0039] Although not shown in the figure, for example, if one fixing hole is provided to the right of the center in the left-right direction of the protective cover, the area located to the left of the left end of the fixing hole (straight line LLE) is the overhang area, and the area located to the right of the right end of the fixing hole (straight line LRE) is the lateral area. Furthermore, the area surrounded by straight lines LRE and LLE is the fixed area.

[0040] Although not shown in the figures, for example, assume that a protective cover is provided with three fixing holes at different left-right positions, and the left-right dimension of the portion located to the left of the left end (straight line LLE) of the leftmost fixing hole is longer than the left-right dimension of the portion located to the right of the right end (straight line LRE) of the rightmost fixing hole. In this case, the portion located to the left of the left end (straight line LLE) of the leftmost fixing hole is the overhang region, and the portion located to the right of the right end (straight line LRE) of the rightmost fixing hole is the lateral region. Furthermore, the region enclosed by straight lines LRE and LLE is the fixed region.

[0041] The protective cover may also have a fixed portion different from the fixing hole. For example, the fixed portion provided on the protective cover may be a welded portion to the case 21. Regardless of the number of welds provided on the protective cover, the fixed region is a part of the protective cover and is surrounded by a straight line LRE extending in the front-rear direction passing through the right end of the rightmost welded portion and a straight line LLE extending in the front-rear direction passing through the left end of the leftmost welded portion. Furthermore, in this case, the overhang region is a region between one side edge of the protective cover in the vehicle width direction and the fixed region, and has a larger dimension in the vehicle width direction than the region between the other side edge of the protective cover in the vehicle width direction and the fixed region.

[0042] In addition, the protective covers 45, 45A, 45B may cover the underside of a motor unit other than the e-axle 20. [Explanation of symbols]

[0043] 10 Vehicles 20 e-Axle (motor unit) 25 26 Flange 32 Flange 37 Flange 45 45A 45B Protective cover 45a Base (plate-shaped part) 45b Inclined portion (plate-shaped portion) 46 47 48 49 Fixing hole (fixed part) 50 Fixed area 51 Overhang Area 54 55 56 Service hole (through hole) 57 First front and rear bead section (bead section) 59 Second front and rear bead section (bead section) 62 First vibration-damping sheet (vibration-damping material) 64 Second vibration-damping sheet (vibration-damping material) 69 Bolt (fixing member) 70 Vehicle protective cover fixing structure 75 First front and rear bead section (bead section) 76 Second front and rear bead section (bead section) 77 Left and right bead parts (bead parts) 81 First front and rear bead section (bead section) 82 Second front and rear bead section (bead section) 83 First left and right bead part (bead part) 84 Second left and right bead part (bead part)

Claims

1. A protective cover covers a lower surface of a motor unit having an electric motor mounted on a vehicle and is exposed at a lower portion of the vehicle. a plate-shaped portion covering the lower surface of the motor unit; At least one fixed portion provided on the plate-shaped portion and fixed to the lower surface; A plurality of bead portions provided on the plate-shaped portion; Equipped with The protective cover is A fixed region including all of the fixed portions; an overhang region between one side edge portion of the plate-shaped portion in the vehicle width direction and the fixed region, the overhang region having a dimension in the vehicle width direction larger than that of a region between the other side edge portion of the plate-shaped portion in the vehicle width direction and the fixed region; having A vehicle protective cover fixing structure, in which a total value of lengths of the bead portions per unit area in the overhang region is greater than a total value of lengths of the bead portions per unit area in the fixed region.

2. The vehicle protective cover fixing structure according to claim 1 , wherein a through hole penetrating the plate-like portion in a thickness direction is provided in the overhang region.

3. 3. The vehicle protective cover fixing structure according to claim 1, wherein a flange is provided on the lower surface of the motor unit, the flange protruding toward a portion of the protective cover where the bead portion is not provided.

4. 3. The vehicle protective cover fixing structure according to claim 1, wherein a vibration-damping material having an elastic portion made of an elastic material is provided on an upper surface of the overhang region.

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