WO2024257247A1 - 車載部品の支持構造 - Google Patents

車載部品の支持構造 Download PDF

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Publication number
WO2024257247A1
WO2024257247A1 PCT/JP2023/022006 JP2023022006W WO2024257247A1 WO 2024257247 A1 WO2024257247 A1 WO 2024257247A1 JP 2023022006 W JP2023022006 W JP 2023022006W WO 2024257247 A1 WO2024257247 A1 WO 2024257247A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
connecting member
wall
support structure
panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/022006
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English (en)
French (fr)
Japanese (ja)
Inventor
伸治 中野
幸治 石井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to PCT/JP2023/022006 priority Critical patent/WO2024257247A1/ja
Priority to JP2025526981A priority patent/JPWO2024257247A1/ja
Publication of WO2024257247A1 publication Critical patent/WO2024257247A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units

Definitions

  • the present invention relates to a support structure for vehicle-mounted components.
  • Patent Document 1 discloses an electric vehicle equipped with a motor room and a base panel that is provided in the motor room and divides the motor room into an upper space and a lower space.
  • the base panel has a flat plate portion. The rear end of the flat plate portion in the longitudinal direction of the vehicle is directly connected and fixed horizontally to the front side of the dash panel by welding or the like.
  • Patent Document 1 a large force may be applied to the dash panel via the base panel during a frontal collision.
  • the object of the present invention is to provide a support structure for vehicle components that can prevent excessive force from being applied to the dash panel during a frontal collision.
  • the support structure for an on-board component comprises a dash panel that separates a power compartment from a passenger compartment, a cowl panel that extends forward from the front surface of the dash panel above the dash panel in the vertical direction of the vehicle, a pair of strut towers that are arranged in front of the cowl panel, a connecting member, and a bracket.
  • the connecting member is arranged below the cowl panel in the vertical direction of the vehicle and spaced apart from the dash panel in the fore-aft direction of the vehicle, and is connected to each of the pair of strut towers.
  • the bracket is fixed to the cowl panel and the connecting member, and supports the on-board component between the cowl panel and the connecting member.
  • the above-mentioned support structure for vehicle-mounted components can prevent excessive force from being applied to the dash panel during a frontal collision.
  • FIG. 1 is a perspective view showing a support structure for an in-vehicle component according to an embodiment of the present invention.
  • FIG. 2 is a perspective view showing a state in which a connecting member and a bracket are removed from FIG.
  • FIG. 3 is a perspective view of the bracket and the vehicle-mounted components of FIG.
  • FIG. 4 is a perspective view showing a state in which another vehicle-mounted part is placed on the placement surface of the connecting member of FIG. 1 .
  • 5A and 5B are a cross-sectional view taken along the line X1-X1 in FIG. 1 and a cross-sectional view showing a modified example of the support structure for an on-vehicle component according to the embodiment during a frontal collision.
  • FIG. 1 is a perspective view showing a support structure for an in-vehicle component according to an embodiment during a frontal collision.
  • FIG. 6 is a plan view showing the state in which a suspension arm disposed inside the strut tower of FIG. 1 is joined to a housing of the strut tower.
  • FIG. 7 is a perspective view of the suspension arm of FIG. 5 and its peripheral members.
  • FIG. 8 is a cross-sectional view taken along line X2-X2 of FIG.
  • FW indicates the front in the longitudinal direction of the vehicle
  • UP indicates the upper side in the vertical direction of the vehicle
  • LH and RH indicate the left and right sides in the width direction of the vehicle, respectively.
  • the front, front side, rear, and rear side in the longitudinal direction of the vehicle, the upper side, upper side, lower side, and lower side in the vertical direction of the vehicle, and the left side, left side, right side, and right side in the width direction of the vehicle will be simply referred to as the front, front side, rear, rear side, upper side, upper side, lower side, lower side, left side, left side, right side, and right side, respectively.
  • configurations having the same functions as those already described will be given the same reference numerals and descriptions will be omitted.
  • the support structure S includes a dash panel 11, a cowl panel 21, a pair of strut towers 31R, 31L, a connecting member 41, and a bracket 51.
  • the connecting member 41 is connected to each of the pair of strut towers 31R, 31L.
  • the bracket 51 is fixed to the cowl panel 21 and the connecting member 41, and supports the on-board component 15.
  • the dash panel 11 is a partition plate that separates the motor room MR, which is a power room, from the passenger compartment 1, and is located between the motor room MR and the passenger compartment 1 in the fore-and-aft direction of the vehicle.
  • the cowl panel 21 is a vehicle body member that is disposed above the dash panel 11 and extends forward from the front surface of the dash panel 11. As shown in FIG. 5, the cowl panel 21 is fastened to the upper end 11A of the dash panel 11 by bolts 21A.
  • a pair of strut towers 31R, 31L are disposed in front of the cowl panel 21, on the left and right sides of the motor room MR, respectively.
  • a motor 61 for driving the vehicle is disposed between the right strut tower 31R and the left strut tower 31L.
  • Fixed shafts 63 are provided on the left and right ends 62R, 62L of the motor 61, respectively, and extend outward in the vehicle width direction from the ends.
  • the left and right fixed shafts 63 are supported by motor mounts 64R, 64L, respectively.
  • motor mount 64R is attached to strut tower 31R
  • motor mount 64L is attached to strut tower 31L
  • Motor mount 64R has two upper legs 65U and two lower legs 65D at the right end.
  • Upper leg 65U is fastened to left side surface 32L of housing 32 of strut tower 31R by bolt 33.
  • lower leg 65D is fastened to left side surface 39L of right front side member 39, which extends in the vehicle longitudinal direction at the lower right of motor room MR, by bolt 35.
  • the fastening points of upper leg 65U and lower leg 65D by bolts 33, 35 are mounting point P1 of motor mount 64L.
  • motor mount 64L similarly has two upper legs 65U and two lower legs 65D at the left end.
  • the upper leg 65U is fastened to the right side of the housing 32 of the strut tower 31L by a bolt 33.
  • the lower leg 65D is fastened to the right side of the left front side member 39, which extends in the vehicle front-rear direction in the lower left part of the motor room MR, by a bolt 35.
  • the fastening points of the upper leg 65U and the lower leg 65D by the bolts 33 and 35 are the mounting point P1 of the motor mount 64L.
  • the connecting member 41 which is a plate-shaped member, is disposed between the strut towers 31R and 31L, below the cowl panel 21 and above the motor 61.
  • the connecting member 41 has a mounting surface 41A between the strut towers 31R and 31L, on which various on-board parts can be placed.
  • on-board parts 30A, 30B, 30C which are parts other than the on-board part 15, may also be placed.
  • the on-board part 30A is, for example, a 12V battery, and can be fixed and supported by a fixing pin 47 (see FIG. 8) on a tray 46 installed on the mounting surface 41A.
  • the on-board parts 30B, 30C are, for example, a fusible link (FL) box, a PCT heater, a DC/DC converter, etc.
  • FL fusible link
  • PCT heater a PCT heater
  • DC/DC converter a DC/DC converter
  • the connecting member 41 is made of a metal panel material and has a generally rectangular, flat plate-like shape in a plan view that is longer in the vehicle width direction than in the vehicle front-rear direction.
  • the shape of the connecting member 41 is not particularly limited, and may be, for example, a lattice shape, a frame shape, a staircase shape, etc.
  • the material of the connecting member 41 is also not particularly limited, and may be, for example, a punched metal, an expanded metal, a grating, etc.
  • the connecting member 41 of this embodiment may be composed of a panel portion 42 constituting the mounting surface 41A, and a support member 43 (see FIG. 3) extending in the vehicle width direction along the rear edge of the panel portion 42.
  • the connecting member 41 is disposed apart from the dash panel 11 (see FIG. 5). That is, there is a gap between the rear edge of the panel portion 42 and the rear edge of the support member 43 and the front surface of the dash panel 11.
  • the support member 43 may have a fixed portion 44 to which the bracket 51 is fixed, and a protrusion 45 formed on the outside of the fixed portion 44 in the vehicle width direction (see FIG. 3).
  • the fixed portion 44 is formed in an inverted U-shape in cross section, and is fastened to the bracket 51 at multiple points on its upper surface with bolts 44A.
  • the protrusion 45 has a cross-sectional shape that protrudes in a mountain shape on the outside of the fixed portion 44 in the vehicle width direction, and extends along the vehicle width direction.
  • the support member 43 is fastened to the rear edge of the panel portion 42 at multiple points of the protrusion 45 with bolts 48.
  • the bracket 51 supports the on-vehicle part 15 and is fixed to the cowl panel 21 and the connecting member 41 (see Figures 3 and 5). That is, the connecting member 41 is fixed to the cowl panel 21 located above the connecting member 41 via the bracket 51.
  • the on-vehicle part 15 is supported on the upper surface of the bracket 51 fixed to the fixing portion 44, and may be fastened and fixed by, for example, a bolt.
  • the on-vehicle part 15 is, for example, a VDC (Vehicle Dynamics Control).
  • the bracket 51 may be composed of a first member 52 having a first flange 53, a first wall portion 54, and a first corner portion 55, and a second member 56 having a second flange 57, a second wall portion 58, and a second corner portion 59 (see Figs. 3 and 5).
  • the first member 52 and the second member 56 each have an L-shape in a side view.
  • the first wall portion 54 and the second wall portion 58 are arranged so as to be approximately parallel to the dash panel 11.
  • the first wall portion 54 is fastened and fixed to the second wall portion 58 by a bolt 54B.
  • the arrangement of the first wall portion 54 and the second wall portion 58 is not limited to the above, and they do not have to be arranged parallel to the dash panel 11.
  • the configuration of the first wall portion 54 and the second wall portion 58 is not limited to the above, and the first wall portion 54 and the second wall portion 58 may be composed of a single member.
  • the first flange 53 may extend in the vehicle fore-and-aft direction and be fixed to the cowl panel 21 at a fixing point 22 by welding or the like (see FIG. 5).
  • the fixing point 22 may be provided between the first wall portion 54 and the second wall portion 58 and the dash panel 11 in the vehicle fore-and-aft direction (see FIG. 5).
  • the first wall portion 54 and the first flange 53 are disposed at a substantially right angle, and a first corner portion 55 is formed between an upper end portion 54A of the first wall portion 54 and a front end portion of the first flange 53 (see FIG. 5).
  • the second flange 57 may extend in the fore-and-aft direction of the vehicle and be fastened to the support member 43 by bolts 44A (see FIG. 5).
  • the second wall portion 58 and the second flange 57 are disposed at a substantially right angle, and a second corner portion 59 is formed between the lower end portion 58A of the second wall portion 58 and the rear end portion of the second flange 57 (see FIG. 5).
  • the thickness of the upper end 54A of the first wall portion 54 may be thinner than the thickness of the lower end 58A of the second wall portion 58.
  • the strength of the upper end 54A of the first wall portion 54 is lower than the strength of the lower end 58A of the second wall portion 58.
  • the thickness of the first flange 53, the first wall portion 54, and the first corner portion 55 may be thinner than the thickness of the second flange 57, the second wall portion 58, and the second corner portion 59.
  • the second flange 57 and the convex portion 45 fixed to the fixing portion 44 may be arranged in an overlapping position in the vehicle longitudinal direction (see Figures 3 and 5).
  • the region forming the width of the second flange 57 and the region forming the width of the convex portion 45 are arranged to overlap in part. More specifically, in the vehicle longitudinal direction, the rear edge portion of the second flange 57 is located rearward of the front edge portion of the convex portion 45, and the front edge portion of the second flange 57 is located forward of the rear edge portion of the convex portion 45.
  • the shape and material of the bracket 51 are not limited to those shown in the figure.
  • the connecting member 41 is connected to the strut towers 31R and 31L.
  • the right edge 41a of the connecting member 41 is fastened and fixed to the front support part 34A and the rear support part 34B by bolts 37.
  • the front support part 34A protrudes leftward from the front part of the left side surface 32L of the housing 32 of the right strut tower 31R.
  • the rear support part 34B protrudes leftward from the rear part of the left side surface 32L.
  • the left edge 41b of the connecting member 41 is fastened and fixed to the front support part 34A and the rear support part 34B by bolts 37.
  • the front support part 34A protrudes rightward from the front part of the right side surface of the housing 32 of the left strut tower 31L.
  • the rear support part 34B protrudes rightward from the rear part of the right side surface.
  • each support portion 34A, 34B is provided with a bolt hole 36 through which a bolt 37 is inserted.
  • the bolt fastening point between the connecting member 41 and the two front support portions 34A is the front connection point p1 between the connecting member 41 and the strut towers 31R, 31L.
  • the fastening point between the connecting member 41 and the two rear support portions 34B is the rear connection point p2 between the connecting member 41 and the strut towers 31R, 31L.
  • connection points the front connection point p1 and the rear connection point p2 are collectively referred to as "connection points.”
  • connection points the connecting member 41 and the strut towers 31R, 31L are connected by bolt fastening, but they may also be connected by welding. In the case of welding, the weld points become the connection points.
  • the attachment point P1 of the motor mounts 64R, 64L is located behind the front connection point p1 and in front of the rear connection point p2. Furthermore, the attachment point P1 of the upper end and upper leg 65U of the motor mounts 64R, 64L is located above the front connection point p1 and the rear connection point p2, more specifically, above the upper surfaces 34a of the two supports 34A, 34B. Furthermore, the attachment point P1 of the lower end and lower leg 65D of the motor mounts 64R, 64L is located below the front connection point p1 and the rear connection point p2, more specifically, below the upper surfaces 34a of the two supports 34A, 34B.
  • the front connection point p1, the rear connection point p2, and the right edge 41a of the connecting member 41 connected to them are arranged to straddle the upper leg 65U of the motor mount 64R.
  • the front connection point p1, the rear connection point p2, and the left edge 41b of the connecting member 41 connected thereto are positioned so as to straddle the upper leg 65U of the motor mount 64L.
  • a suspension arm 71 is connected to the front 31a and rear 31b of the right strut tower 31R.
  • a suspension arm 71 is also connected to the front 31a and rear 31b of the left strut tower 31L.
  • the configuration of the suspension arm 71 and its surrounding components is the same for both left and right strut towers 31R, 31L, so below only the right side will be described and the description of the left side will be omitted.
  • the suspension arm 71 is an upper link of a double wishbone suspension that has a V-shape, and is also called an A-arm.
  • the suspension arm 71 supports a wheel (not shown).
  • a suspension strut 72 is disposed inside the V-shape of the suspension arm 71.
  • the front end 71A of the suspension arm 71 is connected to the front part 31a of the strut tower 31R via a mounting bolt 74a.
  • the rear end 71B of the suspension arm 71 is connected to the rear part 31b of the strut tower 31R via a mounting bolt 74b. That is, both ends 71A and 71B of the suspension arm 71 are connected to the front part 31a and the rear part 31b of the strut tower 31R, and the front part 31a and the rear part 31b are connected via one suspension arm 71.
  • the mounting bolts 74a and 74b are inserted into bushes (not shown) that are pressed into the ends 71A and 71B of the suspension arm 71.
  • the mounting bolts 74a and 74b are located above the upper surfaces 34a of the supports 34A and 34B, i.e., above the front connection point p1 and the rear connection point p2.
  • the front connection point p1 between the connecting member 41 and the strut tower 31R is located rearward of the front fixed point r1 of the suspension arm 71, more specifically, rearward of the front end of the front fixed point r1.
  • the rear connection point p2 between the connecting member 41 and the strut tower 31R is located forward of the rear fixed point r2 of the suspension arm 71, more specifically, forward of the rear end of the rear fixed point r2. That is, the connection points p1, p2 are located between the fixed points r1, r2 of the suspension arm 71 in the vehicle fore-and-aft direction, more specifically, between the front end of the front fixed point r1 and the rear end of the rear fixed point r2.
  • the front fixed point r1 includes the mounting bolt 74a
  • the rear fixed point r2 includes the mounting bolt 74b.
  • the front end of the front fixing point r1 is the fastening point of the mounting bolt 74a on the front wall 38a of the housing 32 of the strut tower 31R, i.e., the center point of the through hole for the mounting bolt 74a provided in the front wall 38a.
  • the rear end of the rear fixing point r2 is the fastening point of the mounting bolt 74b on the rear wall 38b of the housing 32 of the strut tower 31R, i.e., the center point of the through hole for the mounting bolt 74b provided in the rear wall 38b.
  • Two first reinforcing panels 91, 92 and one second reinforcing panel 93 are arranged side by side in the fore-and-aft direction of the vehicle inside the housing 32 of the strut tower 31R.
  • the first reinforcing panel 91 includes a first wall 91a, a second wall 91b, and a third wall 91c each extending substantially vertically, and a fourth wall 91d extending substantially horizontally.
  • the first wall 91a extends along the vehicle width direction inner wall 32a of the housing 32 and is joined to the vehicle width direction inner wall 32a.
  • the second wall 91b extends outward in the vehicle width direction from the front end edge 94b of the first wall 91a, extends along the front side wall 38a of the housing 32, and is joined to the front side wall 38a.
  • the third wall 91c extends outward in the vehicle width direction from the rear end edge 94a of the first wall 91a and faces the second wall 91b in the vehicle front-rear direction.
  • the fourth wall 91d extends outward in the vehicle width direction from the upper end of the first wall 91a, and is connected at the front and rear ends to the upper end edge of the second wall 91b and the upper end edge of
  • the first reinforcing panel 92 includes a first wall 92a, a second wall 92b, and a third wall 92c each extending substantially vertically, and a fourth wall 92d extending substantially horizontally.
  • the first wall 92a extends along the vehicle width direction inner wall 32a of the housing 32 and is joined to the vehicle width direction inner wall 32a.
  • the second wall 92b extends outward in the vehicle width direction from the rear end edge 95a of the first wall 92a, extends along the rear side wall 38b of the housing 32, and is joined to the rear side wall 38b.
  • the third wall 92c extends outward in the vehicle width direction from the front end edge 95b of the first wall 92a and faces the second wall 92b in the vehicle front-rear direction.
  • the fourth wall 92d extends outward in the vehicle width direction from the upper end edge of the first wall 92a, and is connected at its front and rear ends to the upper end edge of the second wall 92b and the upper end edge of the
  • the second reinforcing panel 93 has a U-shaped cross section and includes a first wall 93a, a second wall 93b, and a third wall 93c, each of which extends in a generally vertical direction.
  • the first wall 93a extends along the vehicle width direction inner wall 32a of the housing 32 and is joined to the vehicle width direction inner wall 32a.
  • the second wall 93b extends outward in the vehicle width direction from the front end edge 96b of the first wall 93a, extends along the third wall 91c of the first reinforcing panel 91, and is joined to the third wall 91c.
  • the third wall 93c extends outward in the vehicle width direction from the rear end edge 96a of the first wall 93a, extends along the third wall 92c of the first reinforcing panel 92, and is joined to the third wall 92c.
  • the tip 71A of the suspension arm 71 is housed inside the first reinforcing panel 91 so as to be rotatable around the axis of the mounting bolt 74a.
  • the tip 71B of the suspension arm 71 is housed inside the first reinforcing panel 92 so as to be rotatable around the axis of the mounting bolt 74b.
  • the first reinforcing panel 91, the front wall 38a of the housing 32, the second reinforcing panel 93, and the tip 71A of the suspension arm 71 are fastened together by the mounting bolt 74a.
  • the first reinforcing panel 92, the rear wall 38b of the housing 32, the second reinforcing panel 93, and the tip 71B of the suspension arm 71 are fastened together by the mounting bolt 74b.
  • the front end of the mounting bolt 74a inserted into the tip 71A of the suspension arm 71 is supported by the second wall 91b of the first reinforcing panel 91 and the front wall 38a of the housing 32.
  • the rear end of the mounting bolt 74a is supported by the third wall 91c of the first reinforcing panel 91 and the second wall 93b of the second reinforcing panel 93.
  • the rear end of the mounting bolt 74b inserted into the tip 71B of the suspension arm 71 is supported by the second wall 92b of the first reinforcing panel 92 and the rear wall 38b of the housing 32.
  • the front end of the mounting bolt 74b is supported by the third wall 92c of the first reinforcing panel 92 and the third wall 93c of the second reinforcing panel 93.
  • the first reinforcing panel 91 reinforces the front end of the front fixing point r1 of the suspension arm 71 and its vicinity, improving the support rigidity of the front end of the mounting bolt 74a.
  • the first reinforcing panel 92 reinforces the rear end of the rear fixing point r2 of the suspension arm 71 and its vicinity, improving the support rigidity of the rear end of the mounting bolt 74b.
  • the second reinforcing panel 93 reinforces the third wall 91c of the first reinforcing panel 91 to improve the support rigidity of the rear end of the mounting bolt 74a, and reinforces the third wall 92c of the first reinforcing panel 92 to improve the support rigidity of the front end of the mounting bolt 74b.
  • the upper leg 65U of the motor mount 64R is fastened by bolts 33 to the vehicle width direction inner wall 32a of the housing 32 of the strut tower 31R and to the first wall 93a of the second reinforcing panel 93 (see FIG. 6), and is supported by these.
  • the second reinforcing panel 93 reinforces the attachment point P1 of the motor mount 64R and its vicinity, improving the support rigidity of the motor mount 64R.
  • the second reinforcing panel 93 extends vertically inside the housing 32 of the strut tower 31R.
  • the upper end of the second reinforcing panel 93 is located above the mounting bolts 74a and 74b.
  • the lower end of the second reinforcing panel 93 is located below the front connection point p1 and the rear connection point p2, more specifically, below the upper surfaces 34a of the two supports 34A and 34B.
  • the support parts 34A and 34B are joined to the housing 32 of the strut tower 31R as well as to the second reinforcing panel 93.
  • the second reinforcing panel 93 also contributes to improving the support rigidity of the connecting member 41 via the support parts 34A and 34B.
  • the connecting member 41 When the impact of a collision is input to the front surface of the connecting member 41, the connecting member 41 can move back toward the rear dash panel 11 to fill the gap between the connecting member 41 and the front surface of the dash panel 11. This makes it possible to absorb part of the impact of the collision. Furthermore, when the impact of a collision is input to the front surface of the connecting member 41, the bracket 51 fixed to the connecting member 41 can deform toward the rear dash panel 11. This makes it possible to absorb part of the impact of the collision. Therefore, it is possible to prevent excessive force from being applied to the connecting member 41 and the dash panel 11 located behind the bracket 51.
  • the deformation of the bracket 51 will be described in detail.
  • the first flange 53 of the bracket 51 may extend in the vehicle longitudinal direction, and the first wall portion 54 of the bracket 51 may extend in the vehicle vertical direction.
  • the first corner portion 55 formed between the first flange 53 and the first wall portion 54 has a shape that is more easily bent than the first wall portion 54 in response to an input in the vehicle longitudinal direction.
  • the second flange 57 may extend in the vehicle longitudinal direction
  • the second wall portion 58 may extend in the vehicle vertical direction.
  • the second corner portion 59 formed between the second flange 57 and the second wall portion 58 has a shape that is more easily bent than the second wall portion 58 in response to an input in the vehicle longitudinal direction.
  • the bracket 51 deforms toward the dash panel 11
  • the first corner portion 55 and the second corner portion 59 deform before the first wall portion 54 and the second wall portion 58.
  • the first corner portion 55 deforms so that the angle between the first flange 53 and the first wall portion 54 becomes smaller.
  • the second corner portion 59 is deformed so that the angle between the second flange 57 and the second wall portion 58 becomes smaller. Therefore, the bracket 51 is deformed into a generally Z-shape in side view.
  • the first corner portion 55 and the second corner portion 59 are deformed before the first wall portion 54 and the second wall portion 58, so that they can absorb part of the impact caused by the collision and mitigate the deformation of the first wall portion 54 and the second wall portion 58.
  • the vehicle-mounted component 15 supported by the bracket 51 is more likely to collide with the vehicle-mounted components 30A, 30B, and 30C on the mounting surface 41A or surrounding components and be damaged. Therefore, the first corner portion 55 and the second corner portion 59 are deformed before the first wall portion 54 and the second wall portion 58, so that the deformation of the first wall portion 54 and the second wall portion 58 can be mitigated and excessive force can be prevented from being applied to the vehicle-mounted component 15 supported by the bracket 51.
  • the support structure S includes a dash panel 11 that separates the power chamber MR from the passenger compartment 1, a cowl panel 21 that extends forward from the front surface of the dash panel 11 above the dash panel 11 in the vertical direction of the vehicle, a pair of strut towers 31R, 31L that are disposed in front of the cowl panel 21, a connecting member 41, and a bracket 51.
  • the connecting member 41 is disposed below the cowl panel 21 in the vertical direction of the vehicle and spaced apart from the dash panel 11 in the longitudinal direction of the vehicle, and is connected to each of the pair of strut towers 31R, 31L.
  • the bracket 51 is fixed to the cowl panel 21 and the connecting member 41, and supports the on-board component 15 between the cowl panel 21 and the connecting member 41.
  • the connecting member 41 can move back toward the dash panel 11 so as to fill the gap between the connecting member 41 and the front surface of the dash panel 11. This makes it possible to absorb part of the impact of the collision. Furthermore, when a collision impact is input to the front surface of the connecting member 41, the bracket 51 fixed to the connecting member 41 can deform toward the rear dash panel 11. This makes it possible to absorb part of the impact of the collision. Therefore, it is possible to prevent excessive force from being applied to the dash panel 11 located behind the connecting member 41 and the bracket 51.
  • the bracket 51 has a first flange 53 fixed to the cowl panel 21 and extending in the vehicle fore-and-aft direction, a second flange 57 fixed to the connecting member 41 and extending in the vehicle fore-and-aft direction, and a first wall portion 54 and a second wall portion 58 which are walls connected to the first flange 53 and the second flange 57.
  • the first corner portion 55 which is a portion between the first flange 53 and the first wall portion 54, is more likely to bend than the first wall portion 54 in response to an input in the vehicle fore-and-aft direction.
  • the second corner portion 59 which is a portion between the second flange 57 and the second wall portion 58, is more likely to bend than the second wall portion 58. Therefore, when the bracket 51 deforms toward the dash panel 11 during a frontal collision, the first corner portion 55 and the second corner portion 59 deform before the first wall portion 54 and the second wall portion 58. The first corner 55 and the second corner 59 deform before the first wall 54 and the second wall 58, so that they can absorb part of the impact of the collision and mitigate the deformation of the first wall 54 and the second wall 58. This makes it possible to prevent excessive force from being applied to the vehicle-mounted component 15 supported by the bracket 51.
  • the fixing point 22 between the bracket 51 and the cowl panel 21 is provided between the first wall portion 54 and the second wall portion 58, which are walls in the vehicle longitudinal direction, and the dash panel 11. Therefore, the fixing point 22 is provided near the fastening point of the cowl panel 21 and the dash panel 11 by the bolt 21A. Therefore, the rigidity of the part around the fixing point 22 on the first flange 53 is high against the input in the vehicle longitudinal direction. Therefore, when the bracket 51 deforms toward the dash panel 11 in the event of a frontal collision, the deformation of the part around the fixing point 22 on the first flange 53 can be suppressed.
  • the first corner portion 55 and the second corner portion 59 deform before the first wall portion 54 and the second wall portion 58, absorbing part of the impact due to the collision, and the deformation of the first wall portion 54 and the second wall portion 58 is mitigated. As a result, it is possible to further suppress the application of excessive force to the vehicle-mounted component 15 supported by the bracket 51.
  • the strength of the upper end 54A of the first wall portion 54, which is a wall portion, is lower than the strength of the lower end 58A of the second wall portion 58, which is a wall portion.
  • the first corner portion 55 having the upper end portion 54A has lower rigidity than the second corner portion 59 having the lower end portion 58A with respect to input in the vehicle longitudinal direction. Therefore, when the bracket 51 deforms toward the dash panel 11 during a frontal collision, the first corner portion 55 deforms before the second corner portion 59.
  • the first corner portion 55 located above the vehicle-mounted component 15 deforms before the second corner portion 59 and absorbs part of the impact of the collision, thereby mitigating the deformation of the second corner portion 59 located near the vehicle-mounted component 15. Therefore, it is possible to suppress the application of excessive force to the vehicle-mounted component 15 supported by the second flange 57 extending to the second corner portion 59.
  • the connecting member 41 has a protrusion 45 extending along the vehicle width direction at a position overlapping with the second flange 57 in the vehicle front-rear direction. Therefore, the protrusion 45 increases the rigidity of the area around the fixed point of the bracket 51 and the connecting member 41 on the second flange 57. Therefore, when the bracket 51 deforms toward the dash panel 11 during a frontal collision, deformation of the area around the fixed point on the second flange 57 can be suppressed.
  • the first corner 55 and the second corner 59 deform before the first wall 54 and the second wall 58, absorbing part of the impact of the collision, and the deformation of the first wall 54 and the second wall 58 is mitigated. This makes it possible to suppress excessive force from being applied to the vehicle-mounted component 15 supported by the bracket 51.
  • the connecting member 41 has a mounting surface 41A on which the other on-board components 30A, 30B, 30C are placed, and a suspension arm 71 that supports the wheel is connected to the front and rear of each of the pair of strut towers 31R, 31L.
  • the connecting member 41 is joined to a highly rigid strut tower to which the suspension arm 71 is connected at the front and rear. This makes it possible to suppress deformation of the mounting surface 41A of the connecting member 41 during a frontal collision, and to suppress the application of excessive force to the on-board components 30A, 30B, 30C (FL box, PCT heater, DC/DC converter, VDC, etc.) that are placed on it.
  • connection points of the connecting member 41 with the pair of strut towers 31R, 31L are located rearward of the front fixed point of the suspension arm connected to the front of the strut tower and forward of the rear fixed point of the suspension arm connected to the rear of the strut tower.
  • the area of the strut tower between the front fixed point and the rear fixed point more specifically the area between the front end of the front fixed point and the rear end of the rear fixed point, has higher rigidity than the outer areas.
  • a motor mount that supports a motor 61 for vehicle travel which is located below the connecting member 41, is attached to each of the pair of strut towers 31R, 31L, and the connection points of each of the pair of strut towers include a front connection point and a rear connection point, and in each of the pair of strut towers, the motor mount is located between the front connection point and the rear connection point. Since the left and right strut towers 31L, 31R are connected to each other via the motor 61 and the motor mounts 64R, 64L, the rigidity of the portion of the strut towers 31R, 31L near the attachment point P1 of 31R, 32L is improved.
  • the motor mounts 64R, 64L are located between the front connection point p1 and the rear connection point p2 in each of the strut towers 31R, 31L.
  • the area between the front connection point p1 and the rear connection point p2 of the strut towers 31R, 31L is reinforced by the motor mounts 64R, 64L, which reduces the crushing deformation of that area during a frontal collision.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
PCT/JP2023/022006 2023-06-14 2023-06-14 車載部品の支持構造 Ceased WO2024257247A1 (ja)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1053028A (ja) * 1996-08-09 1998-02-24 Nissan Motor Co Ltd 電気自動車のモータルーム内部品搭載構造
JP2003118640A (ja) * 2001-10-10 2003-04-23 Nissan Motor Co Ltd 自動車の車体前部構造
JP2006281806A (ja) * 2005-03-31 2006-10-19 Mazda Motor Corp 車両用エンジン補機の配設構造
JP2011189790A (ja) * 2010-03-12 2011-09-29 Toyota Motor Corp 車体への部材搭載構造
US20120169023A1 (en) * 2011-01-05 2012-07-05 Tesla Motors, Inc. Vehicle Front Shock Tower

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1053028A (ja) * 1996-08-09 1998-02-24 Nissan Motor Co Ltd 電気自動車のモータルーム内部品搭載構造
JP2003118640A (ja) * 2001-10-10 2003-04-23 Nissan Motor Co Ltd 自動車の車体前部構造
JP2006281806A (ja) * 2005-03-31 2006-10-19 Mazda Motor Corp 車両用エンジン補機の配設構造
JP2011189790A (ja) * 2010-03-12 2011-09-29 Toyota Motor Corp 車体への部材搭載構造
US20120169023A1 (en) * 2011-01-05 2012-07-05 Tesla Motors, Inc. Vehicle Front Shock Tower

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