WO2024189742A1 - 配線部品の保護構造 - Google Patents

配線部品の保護構造 Download PDF

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Publication number
WO2024189742A1
WO2024189742A1 PCT/JP2023/009669 JP2023009669W WO2024189742A1 WO 2024189742 A1 WO2024189742 A1 WO 2024189742A1 JP 2023009669 W JP2023009669 W JP 2023009669W WO 2024189742 A1 WO2024189742 A1 WO 2024189742A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
protective member
protective
fpdu
wiring component
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/JP2023/009669
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
亨 ▲高▼江洲
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.)
Mitsubishi Motors Corp
Original Assignee
Mitsubishi Motors Corp
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 Mitsubishi Motors Corp filed Critical Mitsubishi Motors Corp
Priority to JP2025506293A priority Critical patent/JPWO2024189742A1/ja
Priority to PCT/JP2023/009669 priority patent/WO2024189742A1/ja
Publication of WO2024189742A1 publication Critical patent/WO2024189742A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/04—Arrangement of batteries
    • 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

Definitions

  • This case concerns the protective structure for wiring components connected to on-board equipment inside the housing at the front of the vehicle.
  • Patent Document 1 discloses a configuration in which a guide member is provided for a vehicle equipped with a lithium-ion battery device, which guides the battery device downwards on the cowl top panel when the battery device moves backwards due to a collision.
  • Patent Document 1 avoids collision between the battery device housing and the cowl top panel by guiding the housing below the cowl top panel, but in the event of a collision, it is necessary to ensure protection not only for the on-board equipment, but also for the wiring components connected to it. In particular, if the wiring components are connected to the on-board equipment from the rear, there is a risk that the wiring components will collide with the cowl top and be damaged if the on-board equipment is pushed back by a frontal collision (head-on collision) of the vehicle.
  • the present wiring component protection structure was devised in consideration of these issues, and one of its objectives is to ensure the protection of wiring components connected to on-board equipment in the event of a vehicle frontal collision.
  • this objective is not the only objective.
  • Another objective of the present invention is to achieve effects that cannot be obtained with conventional technology, which are derived from the configurations shown in the "Mode for Carrying Out the Invention" described below.
  • the disclosed protective structure for wiring components can be realized as the embodiments (application examples) disclosed below, which solve at least part of the above problems.
  • Each embodiment from embodiment 2 onwards is an embodiment that can be selected additionally as appropriate, and each is an embodiment that can be omitted. None of the embodiments from embodiment 2 onwards discloses an embodiment or configuration that is essential to the present case.
  • the disclosed wiring component protection structure is a structure for protecting wiring components connected from the rear to an on-board device arranged in front of a cowl top extending in the vehicle width direction in a front storage compartment of a vehicle, and includes a first protection member fixed along a side surface of the on-board device facing the vehicle width direction.
  • the first protection member has a protrusion that protrudes from an upper portion of the side surface of the on-board device to the side of the wiring component and rearward beyond the rear surface of the on-board device.
  • the protruding portion has a corner formed by an upper edge extending in the front-rear direction and a rear edge extending in the up-down direction.
  • Aspect 3 In the above aspect 2, it is preferable that the corner portion is located above a top surface of the wiring component.
  • the vehicle-mounted device is preferably arranged in the front storage compartment, biased to one side in the vehicle width direction, and the first protective member is fixed along the side surface of the vehicle-mounted device on the inside in the vehicle width direction.
  • the protective structure further includes a second protective member fixed along the side surface of the vehicle-mounted device on the outside in the vehicle width direction.
  • the second protective member has a vertical wall portion that is erected in the vertical direction and protrudes rearward beyond the rear surface of the vehicle-mounted device.
  • the protective structure further includes a third protective member that covers the wiring component from above.
  • a third protective member that covers the wiring component from above.
  • left and right ends of the third protective member are fixed to the first protective member and the second protective member, respectively.
  • Aspect 7 In the above aspect 5 or 6, it is preferable that the second protective member is fixed to the body of the vehicle at two points in the front-rear direction, and the rear fixing portion of the second protective member has lower rigidity than the front fixing portion.
  • the second protective member has a lower flange portion that is bent inwardly in the vehicle width direction from the lower edge of the vertical wall portion and extends to the rear end of the vertical wall portion, and that the vertical wall portion has a bead that extends in the front-rear direction.
  • the protective structure further includes a connection bracket extending in the front-rear direction and connecting an upper bar supporting a front end of a bonnet hood of the vehicle to a front portion of the on-vehicle device.
  • the protrusion of the first protective member is located on an extension line of the extension direction of the connection bracket.
  • the third protective member overlaps with the convex portion of the first protective member in a top view of the vehicle.
  • the convex portion of the first protective member hits the cowl top before the on-board equipment and wiring components, pushing up the cowl top from below while retreating together with the on-board equipment, so that a survival space for the wiring components can be secured between the cowl top and the on-board equipment, and interference between the cowl top and the wiring components can be prevented. Therefore, the protective performance of the wiring components connected to the on-board equipment in the event of a frontal vehicle collision can be secured.
  • FIG. 1 is a top view for illustrating a front configuration of a vehicle to which a wiring component protective structure according to an embodiment is applied; 1 is a top view showing a configuration around an in-vehicle device provided with a protective structure according to an embodiment;
  • FIG. 3 is a perspective view of FIG. 2 .
  • 3 is a cross-sectional view taken along the line AA in FIG. 2, in which the first protective member is emphasized and the cross section is indicated by a thick solid line.
  • 3 is a cross-sectional view taken along line BB of FIG. 2, emphasizing the second protective member and showing the cross section by a thick solid line.
  • 2 is a perspective view of a first protective member included in the protective structure according to the embodiment
  • FIG. 4 is a perspective view of a second protective member included in the protective structure according to the embodiment.
  • the definition of directions is that the front-to-rear direction (vehicle length direction) is defined based on the forward and backward direction of the vehicle, and the left-to-right direction (vehicle width direction) is defined based on the front-to-rear direction.
  • the up-to-down direction is defined based on the state in which the vehicle is stopped on a flat road surface. Note that in the vehicle width direction, in the part to the left of the vehicle body centerline in a top view of the vehicle, the left is the outside of the vehicle and the right is the inside of the vehicle. Also, in the part to the right of the vehicle body centerline in a top view of the vehicle, the right is the outside of the vehicle and the left is the inside of the vehicle.
  • the wiring component protection structure of this embodiment is a structure that protects wiring components (high voltage wires, harnesses, electric wires, signal lines, etc.) that are connected to on-board equipment mounted in the front accommodation compartment of the vehicle.
  • the accommodation compartment referred to here includes, for example, the engine room, motor room, power unit room, etc., and is located in the front of the passenger compartment where the occupants sit.
  • on-board equipment include equipment to which wiring components are connected (such as a battery or power conversion device).
  • FIG. 1 a front structure of a vehicle 1 to which a protective structure as an embodiment is applied will be described.
  • an engine 60 and an FPDU 40 Front Power Deliver Unit, in-vehicle equipment
  • An opening is provided at the upper end side of the accommodation compartment 2, and a bonnet hood (not shown) is attached to this opening so as to be freely opened and closed.
  • the engine 60 of this embodiment is an internal combustion engine as a drive device, and is disposed inside the accommodation compartment 2 at a position from near the center to the right side in the vehicle width direction.
  • the FPDU 40 is a high-voltage on-board device, and the wiring components 41 are connected to the FPDU 40 from the rear.
  • high-voltage wires such as three-phase wires and PN wires are exemplified as the wiring components 41.
  • the FPDU 40 of this embodiment is disposed inside the accommodation chamber 2, on the left side of the vehicle width direction (left side of the engine 60). That is, in this embodiment, the engine 60 and the FPDU 40 are arranged side by side in the vehicle width direction, and the FPDU 40 is disposed offset to one side (left side) in the vehicle width direction.
  • An electric motor (not shown) is disposed below the FPDU 40 as a drive device.
  • a pair of side members 4 are arranged below the storage compartment 2.
  • the side members 4 are one of the skeletal members that are provided to extend in the front-to-rear direction, and are provided at a specified interval in the vehicle width direction.
  • a front support member 7 (see Figures 3 to 5) that is erected in the vertical direction is connected to the front end of each side member 4.
  • the front support members 7 are provided as a pair at a specified interval in the vehicle width direction, and function to support the radiator unit and headlamp unit that are attached to the front end of the vehicle 1.
  • the upper ends of the left and right front support members 7 are connected almost horizontally by an upper bar 5.
  • the upper bar 5 is a member for supporting the front end of the bonnet hood, and is arranged, for example, along the edge of the opening to which the bonnet hood is attached.
  • the lower ends of the left and right front support members 7 are connected almost horizontally by a front end cross member 8 (see Figure 3) that extends in the vehicle width direction.
  • An upper frame 6 is connected to both the left and right ends of the upper bar 5.
  • the upper frame 6 is one of the components that extends almost horizontally forward from near the lower end of the front pillar (not shown) of the vehicle 1.
  • a pair of upper frames 6 are arranged on the left and right at the top of the accommodation compartment 2.
  • the front fender panel (not shown) of the vehicle 1 is attached to the outside of the upper frame 6.
  • the front wheels and strut house (not shown) are arranged below the upper frame 6.
  • the upper bar 5 and upper frame 6 function to support the portion of the bonnet hood from both the left and right end edges to the front end edge.
  • a dash panel 9 is provided at the rear end of the accommodation compartment 2.
  • the dash panel 9 is a planar member that divides the vehicle interior and the accommodation compartment 2 in the front-rear direction, and the space in front of the dash panel 9 forms the accommodation compartment 2.
  • the dash panel 9 is erected to cover the rear end of the accommodation compartment 2, for example, from the upper end surface of the upper frame 6 to the upper end surface of the side member 4.
  • the lower end of the dash panel 9 is provided to extend rearward in a planar manner along, for example, the upper end surface of the side member 4, and is connected to the floor panel (not shown) of the vehicle interior so as to be approximately flush with the vehicle interior.
  • a cowl top 3 is provided above the dash panel 9.
  • the cowl top 3 is a planar member that connects the vicinity of the lower ends of the left and right front pillars in the vehicle width direction, and is connected to the vicinity of the upper edge of the dash panel 9.
  • the cowl top 3 is provided to extend in the vehicle width direction along the rear edge of the bonnet hood (the base end for opening and closing operations). The lower end of the windshield (windshield) of the vehicle 1 is supported by the cowl top 3.
  • a fender shield 80 is attached inside the storage compartment 2.
  • the fender shield 80 is a planar member that forms part of the bottom surface of the storage compartment 2 inside the fender panel of the vehicle 1.
  • a pair of fender shields 80 are provided on the inside of each of the left and right fender panels.
  • the outer edge of the fender shield 80 on the vehicle side is connected to the upper frame 6.
  • the inner edge of the fender shield 80 on the vehicle side may be connected to the side member 4, or may be provided so as to be spaced apart above the side member 4.
  • the protective structure of this embodiment is a structure for protecting wiring components 41 connected from the rear to an FPDU 40 as an in-vehicle device.
  • the FPDU 40 of this embodiment has a housing that is substantially rectangular in top view, and has a front surface 40a, a rear surface 40b, a right side surface 40c, a left side surface 40d, a top surface 40e, and a bottom surface, as shown in Figures 2 to 4.
  • the top surface 40e of the FPDU 40 of this embodiment is lowered by one step at its rear portion, and an insertion port (not shown) for the wiring components 41 is provided at the rear surface of the portion that forms this step.
  • the top surface of the wiring components 41 is located below the top surface 40e of the FPDU 40.
  • the FPDU 40 is disposed in front of the cowl top 3, which extends in the vehicle width direction, inside the accommodation chamber 2. More specifically, the FPDU 40 is disposed in front of and adjacent to the cowl top 3 so that a portion of the wiring components 41 is located below the cowl top 3 (so that they wrap around in the vertical direction). Therefore, if the FPDU 40 moves backward in the event of a frontal collision of the vehicle 1, the wiring components 41 may interfere with and be damaged by the cowl top 3.
  • the protective structure described below prevents the wiring components 41 from interfering with the cowl top 3 even if the FPDU 40 moves backward in the event of a frontal collision of the vehicle. Furthermore, the protective structure of this embodiment additionally prevents the wiring components 41 from interfering with the turret section 81 (described later) on the side of the vehicle body.
  • the protective structure includes a first protective member 10 fixed along a side surface (right side surface 40c or left side surface 40d) of the FPDU 40 facing in the vehicle width direction.
  • the first protective member 10 has a function of hitting the cowl top 3 before the wiring components 41 and pushing up the cowl top 3 from below.
  • a survival space for the wiring components 41 is secured between the FPDU 40 and the cowl top 3, and interference of the wiring components 41 with the cowl top 3 is prevented.
  • the first protective member 10 needs to be disposed closer to the cowl top 3 than the wiring component 41.
  • the FPDU 40 is disposed to one side (left side) in the vehicle width direction, and the right side surface 40c on the inside (right side) in the vehicle width direction is closer to the cowl top 3 than the left side surface 40d on the outside (left side) in the vehicle width direction. Therefore, the first protective member 10 is fixed along the right side surface 40c on the inside in the vehicle width direction.
  • fixed along the right side surface 40c here refers to a state in which the first protective member 10 is fixed to the FPDU 40 in a state in which it is along the right side surface 40c, and the fixing point of the first protective member 10 to the FPDU 40 may be the right side surface 40c of the FPDU 40, or the top surface 40e or bottom surface.
  • the first protective member 10 of this embodiment is fixed to the side surface of the FPDU 40 (here, the right side surface 40c) at least at two points in the upper and lower directions, as described later.
  • the first protective member 10 has a protrusion 14 that protrudes rearward from the upper part of the right side surface 40c of the FPDU 40 to the side of the wiring component 41 and beyond the rear surface 40b of the FPDU 40.
  • This protrusion 14 has the function of pushing up the cowl top 3 described above. It is preferable that at least a portion of the protrusion 14 protrudes upward from the uppermost surface 41a (part shown by the dashed line in FIG. 4) of the wiring component 41 that overlaps with the protrusion 14 in a side view of the vehicle 1. This makes it easier for the protrusion 14 to hit the cowl top 3 before the wiring component 41 in a frontal collision.
  • the first protective member 10 of this embodiment is formed by bending a plate material, as shown in Figures 4 and 6.
  • the first protective member 10 has a side portion 11 that fits along the right side surface 40c of the FPDU 40, an upper flange portion 12 that is bent from the upper edge of the side portion 11 outward in the vehicle width direction (left side), a lower flange portion 13 that is bent from the lower edge of the side portion 11 inward in the vehicle width direction (right side), and the above-mentioned convex portion 14.
  • the side portion 11 is a planar portion that extends in the up-down and front-rear directions, and has a shape that corresponds to the right side surface 40c of the FPDU 40.
  • the upper flange portion 12 is a planar portion extending in the left-right direction and the front-rear direction, and has a fixing point 15 for the FPDU 40 at its front end, and has holes 12h at its front-rear middle and rear end for fixing the third protective member 30 described below.
  • the lower flange portion 13 is a planar portion extending in the left-right direction and the front-rear direction, and has fixing points 16 for the FPDU 40 at its front end and front-rear middle.
  • the first protective member 10 is fixed to the FPDU 40 at three points: one point on the upper flange portion 12 and two points on the lower flange portion 13.
  • the upper fixing point 15 and the lower fixing point 16 are offset in the front-to-rear direction in side view. Specifically, from the front, they are the lower fixing point 16, the upper fixing point 15, and the lower fixing point 16, forming a zigzag arrangement in side view.
  • the front-to-rear length of the upper flange portion 12 and the front-to-rear length of the lower flange portion 13 are approximately equal, but the lengths of the flange portions 12, 13 may be set depending on the positions and number of the fixing points 15, 16.
  • the front-rear direction position of the upper fixing point 15 is slightly offset from the front-rear direction position of the lower, front fixing point 16, and the front-rear direction position of the upper fixing point 15 is significantly offset from the front-rear direction position of the lower, rear fixing point 16.
  • the upper fixing point 15 is fixed (bolted) to a boss provided on the top surface 40e of the FPDU 40
  • the lower fixing point 16 is fixed (bolted) to a boss provided on the right side surface 40c.
  • the first protective member 10 is positioned so as to cover the upper part of the right side surface 40c of the FPDU 40 from the right side, and the range from the middle part in the front-rear direction to the rear, when viewed from the right.
  • the convex portion 14 in this embodiment is formed continuously rearward from the side portion 11, and protrudes rearward beyond the upper flange portion 12 and the lower flange portion 13.
  • the convex portion 14 in this embodiment is provided as a planar portion extending in the up-down and front-to-rear directions, and its vertical dimension is set to be larger than the diameter of the portion of the wiring component 41 that overlaps with the convex portion 14 in a side view. In other words, the dimension is set such that the wiring component 41 is hidden by the convex portion 14 in a side view from the right as shown in FIG. 4.
  • the upper edge 14a of the protrusion 14 extends substantially horizontally in the front-to-rear direction, and its rear edge 14b extends from the boundary between the side portion 11 and the lower flange portion 13 at an angle upward toward the rear and then extends in the vertical direction. Therefore, the protrusion 14 has a corner 14c formed by the upper edge 14a extending in the front-to-rear direction and the rear edge 14b extending in the vertical direction. As shown in FIG. 4, the corner 14c of the protrusion 14 in this embodiment is at an angle of approximately 90 degrees in side view. In addition, the corner 14c is located above the top surface 41a of the wiring component 41. This shape can better exert the function of pushing up the cowl top 3.
  • the protruding portion 14 of the first protective member 10 has a higher rigidity than the cowl top 3.
  • the protruding portion 14 may be formed, for example, with a plate thickness greater than that of the cowl top 3, or may be formed from a material with higher rigidity than the material of the cowl top 3, or the rigidity may be increased both in plate thickness and material. Note that, since the first protective member 10 of this embodiment is formed by bending a plate material, the rigidity of not only the protruding portion 14 but also the side portion 11 and the flange portions 12 and 13 may be increased as well.
  • the protective structure of this embodiment further includes a second protective member 20 fixed along a side surface (i.e., left side surface 40d) of the FPDU 40 facing outward in the vehicle width direction.
  • a second protective member 20 fixed along a side surface (i.e., left side surface 40d) of the FPDU 40 facing outward in the vehicle width direction.
  • the second protective member 20 has a function of hitting the turret section 81 before the wiring components 41 do and bracing against the turret section 81.
  • a survival space for the wiring components 41 is secured between the FPDU 40 and the turret section 81, and interference of the wiring components 41 with the turret section 81 is prevented.
  • the turret section 81 is located below the fender shield 80 and is a section for supporting the upper part of the front suspension (not shown) on the vehicle body (also called a spring house, strut tower, suspension tower, etc.).
  • the above-mentioned "fixed along the left side surface 40d" refers to a state in which the second protective member 20 is fixed to the FPDU 40 in a state in which it is aligned with the left side surface 40d, and the fixing point of the second protective member 20 to the FPDU 40 may be the left side surface 40d of the FPDU 40, or the top surface 40e or bottom surface.
  • the second protective member 20 has a vertical wall portion 21 that is erected in the vertical direction and protrudes rearward beyond the rear surface 40b of the FPDU 40.
  • This vertical wall portion 21 mainly has the function of bracing against the above-mentioned turret portion 81.
  • the vertical wall portion 21 is provided as a planar portion that extends in the vertical and front-rear directions along the left side surface 40d of the FPDU 40, and its rear end portion is located rearward beyond the rear surface 40b of the FPDU 40.
  • the second protective member 20 of this embodiment is configured by fixing (welding or fastening) two brackets 20B, 20C to a main part 20A formed by bending a plate material.
  • the main part 20A is provided with the above-mentioned vertical wall part 21, upper flange part 22, and lower flange part 23.
  • the brackets 20B, 20C are each provided with a front fixing part 24 and a rear fixing part 25.
  • the second protective member 20 of this embodiment is configured with three parts 20A, 20B, and 20C, but the second protective member 20 may be configured with one part, or may be configured with multiple parts other than the three parts.
  • the upper flange portion 22 is a portion bent from the upper edge of the vertical wall portion 21 toward the inside (right side) in the vehicle width direction, and has a hole portion 22h for fixing the third protective member 30 described later.
  • the upper flange portion 22 is disposed at a height position equivalent to the upper surface 40e of the FPDU 40.
  • the lower flange portion 23 is a portion bent from the lower edge of the vertical wall portion 21 toward the inside (right side) in the vehicle width direction, and has fixing points 26 for the FPDU 40 at each of its front end and its middle portion in the fore-and-aft direction. Each fixing point 26 is fixed to a boss provided on the bottom surface of the FPDU 40. That is, the second protective member 20 is fixed to the FPDU 40 at two points of the lower flange portion 23.
  • the second protective member 20 has a higher rigidity than the turret section 81.
  • the vertical wall section 21 of this embodiment has a bead 21a extending in the front-rear direction.
  • the bead 21a is a portion in which the vertical middle section of the vertical wall section 21 is concave or convex in the plate thickness direction and extends linearly in the front-rear direction.
  • a configuration in which three beads 21a are arranged side by side in the vertical direction is shown as an example, but the number, length, and shape of the beads 21a are not limited to this.
  • the lower flange portion 23 is provided with an extension portion 23a that extends from the longitudinal position of the rear fixing point 26 to the rear edge of the vertical wall portion 21, as shown by the dashed line in FIG. 7.
  • the extension portion 23a is a portion (part of the lower flange portion 23) formed by bending the lower edge of the vertical wall portion 21 inward in the vehicle width direction, and forms an approximately 90-degree corner with the vertical wall portion 21.
  • This extension portion 23a increases the rigidity of the rear lower end portion of the vertical wall portion 21.
  • the rigidity of the second protective member 20 is increased by the bead 21a and the extension portion 23a of the lower flange portion 23.
  • the rigidity of the second protective member 20 may be increased by increasing the plate thickness or improving the material of the second protective member 20.
  • the second protective member 20 is fixed to the body of the vehicle 1 at two locations in the front-rear direction.
  • the front fixing part 24 located on the front side is provided on a bracket 20B located at the front end of the second protective member 20.
  • the front fixing part 24 has a fastening surface 24a that extends in the front-rear and left-right directions at the lower end of the bracket 20B.
  • the front fixing part 24 is fixed to a sub-member 82 fixed to the left side member 4.
  • the sub-member 82 is one of the skeletal members and has the function of supporting the FPDU 40.
  • the sub-member 82 in this embodiment is generally L-shaped, with a vertical portion extending in the up-down direction and a horizontal portion extending from the upper end of the vertical portion to the inside (right side) in the vehicle width direction.
  • the lower end of the vertical portion of the sub-member 82 is fixed to the left side member 4 and supported in a cantilever state.
  • the front fixing portion 24 of the second protective member 20 is bolted with its fastening surface 24a placed on the upper surface of the horizontal portion of the sub-member 82.
  • the rear fixing part 25 is provided on a bracket 20C located at the middle of the second protective member 20 in the front-rear direction.
  • the rear fixing part 25 has a fastening surface 25a extending in the front-rear direction and the left-right direction at the lower end of the bracket 20C.
  • the rear fixing part 25 is fixed to a motor mount 70 that supports an electric motor.
  • the motor mount 70 includes a sheet metal bracket 71 that is fixed to the upper surface of the side member 4 via a base part 73, a mount part 72 (see FIG. 5) that is fixed to the sheet metal bracket 71, and a bush (not shown) that is fixed to the mount part 72 and supports the electric motor together with the mount part 72.
  • the rear fixing part 25 is bolted with its fastening surface 25a placed on the support base 71a at the upper end of the sheet metal bracket 71.
  • the second protective member 20 is formed so that the rear fixing portion 25 has a lower rigidity than the front fixing portion 24.
  • the rear fixing portion 25 deforms before the front fixing portion 24, so that the FPDU 40 can be easily rotated clockwise (so that the rear part on the right side faces leftward) and moved backward around the front fixing portion 24 as viewed from above.
  • the rigidity of the rear fixing portion 25 is intentionally reduced by a notch 25b formed by cutting out a part of the fastening surface 25a of the rear fixing portion 25.
  • the rigidity of the rear fixing portion 25 may be reduced by providing a notch or recess in the sheet metal bracket 71 to which the rear fixing portion 25 is fixed or in the support base 71a of the sheet metal bracket 71.
  • the protective structure of this embodiment further includes a third protective member 30 that covers the wiring components 41 of the FPDU 40 from above.
  • the third protective member 30 is located between the wiring components 41 and the cowl top 3 when the FPDU 40 moves backward due to a frontal collision, and has the function of preventing the wiring components 41 from colliding with the cowl top 3 or interfering with the stud bolts 3A (see FIGS. 3 and 4) of the cowl top 3.
  • a gap is provided between the third protective member 30 and the wiring components 41 to prevent them from interfering with each other due to vehicle body vibration or the like under normal circumstances other than during a frontal collision.
  • the third protective member 30 is a planar member having a left-right dimension equivalent to that of the top surface 40e of the FPDU 40, with its right end 31 fixed to the first protective member 10 and its left end 32 fixed to the second protective member 20.
  • the third protective member 30 can be said to be a member that connects the upper end of the first protective member 10 and the upper end of the second protective member 20, and also has the function of preventing the first protective member 10 and the second protective member 20 from falling over.
  • the left end 32 of the third protective member 30 has its rear portion fixed to the second protective member 20 and its front portion fixed to the rear of the FPDU 40.
  • the third protective member 30 of this embodiment is provided so as to extend from the connection point (socket) of the wiring component 41 to the FPDU 40 to a position rearward of the rear surface 40b of the FPDU 40 in a top view.
  • a portion of the third protective member 30 is disposed below the cowl top 3, and is provided so as to partially cover the upper side of the wiring component 41 located below the cowl top 3.
  • the third protective member 30 overlaps with the convex portion 14 of the first protective member 10 in a top view.
  • the right end portion 31 of the third protective member 30 is disposed so as to cover the convex portion 14 from above as well. As a result, when the convex portion 14 pushes up the cowl top 3, the third protective member 30 is also pushed up together with it.
  • connection bracket 1 to 5
  • the FPDU 40 of this embodiment is mounted with a gap between it and the upper bar 5 located in front of it.
  • the protective structure of this embodiment further includes a connection bracket 50 that connects the upper bar 5 and a front part of the FPDU 40.
  • the connection bracket 50 is a member extending in the front-rear direction, and has at its front end a fixing part 51 for the upper bar 5 and at its rear end a fixing part 52 for the front part of the FPDU 40 and a fixing part 53 for the sub-member 82 (see FIG. 4).
  • connection bracket 50 is fastened at the fixing part 52 with a bolt to a boss provided at the right front corner formed by the front surface 40a and the right side surface 40c of the FPDU 40, but the fixing position of the connection bracket 50 and the FPDU 40 is not limited thereto.
  • the convex portion 14 of the first protective member 10 is located on an extension line in the extension direction of the connecting bracket 50 (i.e., the front-rear direction).
  • “on an extension line” here is not strictly limited to a single straight line.
  • the connecting bracket 50 is a member having a predetermined left-right dimension
  • the “extension line” may be within a left-right range obtained by extending a straight line rearward from each of the leftmost and rightmost parts of the connecting bracket 50.
  • the “extension line” may include the vicinity of this left-right range.
  • the left-right position of the convex portion 14 and the left-right position of the connecting bracket 50 are approximately equal.
  • the load applied from the upper bar 5 to the connecting bracket 50 during a frontal collision is easily transmitted to the convex portion 14 of the first protective member 10, and the function of pushing up the cowl top 3 by the convex portion 14 is exerted early.
  • the connecting bracket 50 of this embodiment has a weak section 54 (see FIG. 3) with deliberately low rigidity in the middle in the fore-and-aft direction. If the connecting bracket 50 were to be strained during a frontal collision, the amount of rearward displacement of the FPDU 40 would increase, but the weak section 54 prevents the connecting bracket 50 from being strained when a load is applied due to a frontal collision, thereby reducing the amount of displacement of the FPDU 40 and absorbing the load.
  • the above-described protective structure includes a first protective member 10 fixed along a side surface 40c facing the vehicle width direction of an FPDU 40 serving as an in-vehicle device disposed in front of the cowl top 3.
  • the first protective member 10 has a protrusion 14 that protrudes from an upper portion of the side surface 40c of the FPDU 40 to the side of the wiring components 41 and rearward beyond a rear surface 40b of the FPDU 40.
  • the front of the vehicle (upper bar 5, front end cross member 8, etc.) is pushed rearward, and the equipment (FPDU 40, engine 60, etc.) and components inside the accommodation chamber 2 are also pushed rearward. If the FPDU 40 is pushed rearward, the wiring components 41 connected to the FPDU 40 from the rear may collide with the cowl top 3 and be damaged.
  • the convex portion 14 of the first protective member 10 has a corner portion 14c formed by an upper edge 14a extending in the front-rear direction and a rear edge 14b extending in the up-down direction. Therefore, when the FPDU 40 is moved backward, the corner portion 14c of the convex portion 14 can easily push up the cowl top 3, thereby improving the protective performance of the wiring components 41.
  • the corner 14c of the protrusion 14 described above is located above the top surface 41a of the wiring component 41, so that it can hit the cowl top 3 early when the FPDU 40 is retracted. This allows a survival space to be formed early, further improving the protective performance of the wiring component 41.
  • the first protective member 10 is fixed to the side surface 40c of the FPDU 40 at least at two points in the upper and lower directions, and in a side view, the upper fixing point 15 and the lower fixing point 16 are offset in the front-to-rear direction. Therefore, when a load is applied to the first protective member 10 via the FPDU 40 due to a frontal collision, the load can be distributed at the fixing points 15 and 16, and the first protective member 10 can be prevented from detaching from the FPDU 40. This makes it possible to avoid a situation in which the first protective member 10 does not perform the above-described function, and ensures the protective performance of the wiring components 41.
  • the FPDU 40 is positioned offset to the left or right in the vehicle width direction, and the first protective member 10 is fixed along the right side surface 40c (the side surface on the inside in the vehicle width direction) of the FPDU 40, and the second protective member 20 is fixed along the left side surface 40d (the side surface on the outside in the vehicle width direction) of the FPDU 40.
  • This second protective member 20 is erected in the vertical direction and has a standing wall portion 21 that protrudes rearward beyond the rear surface 40b of the FPDU 40.
  • the side surface on the inside in the vehicle width direction (here, the right side surface 40c) will be closer to the cowl top 3 than the side surface on the outside in the vehicle width direction (here, the left side surface 40d). Therefore, by fixing the first protective member 10 along the side surface 40c on the inside in the vehicle width direction, the first protective member 10 can easily push up the cowl top 3 early on, thereby improving the protection performance of the wiring components 41.
  • the second protective member 20 with the vertical wall section 21 hits the turret section 81, ensuring a survival space for the wiring components 41 between the FPDU 40 and the turret section 81. This prevents interference between the turret section 81 and the wiring components 41, improving the protection performance of the wiring components 41 during a frontal collision.
  • the third protective member 30 is provided to cover the wiring components 41 from above, thereby preventing the wiring components 41 from colliding with the cowl top 3 or interfering with the stud bolts 3A of the cowl top 3 during a frontal collision.
  • the right end 31 of the third protective member 30 is fixed to the first protective member 10, and the left end 32 is fixed to the second protective member 20.
  • the left and right first protective members 10 and second protective members 20 can be prevented from falling over. This makes it possible to avoid a situation in which the functions of the first protective member 10 and the second protective member 20 are not fulfilled, and the protective performance of the wiring components 41 can be ensured.
  • the second protective member 20 is fixed to the vehicle body at two points in the front-rear direction, and the rear fixing portion 25 of the second protective member 20 has lower rigidity than the front fixing portion 24.
  • the rear fixing portion 25 is more fragile than the front fixing portion 24 in the event of a frontal collision, so the FPDU 40 can be moved backward while rotating around the front fixing portion 24, making it easier for the first protective member 10 to push up the cowl top 3.
  • the fixing portion 25 of the second protective member 20 to the vehicle body fragile the fixing point of the second protective member 20 to the FPDU 40 can be made less fragile, thereby reducing damage to the FPDU 40.
  • the second protective member 20 has a lower flange portion 23 that is bent from the lower edge of the vertical wall portion 21 inward in the vehicle width direction and extends to the rear end of the vertical wall portion 21. That is, an extension portion 23a is provided on the lower flange portion 23.
  • the vertical wall portion 21 has a bead 21a that extends in the front-rear direction.
  • connection bracket 50 that connects the upper bar 5 and the front of the FPDU 40 extends in the fore-and-aft direction, and the protrusion 14 of the first protective member 10 is disposed on an extension line of the extension direction (fore-and-aft direction) of the connection bracket 50. Therefore, the load during a frontal collision is transmitted to the FPDU 40 through the connection bracket 50.
  • the protrusion 14 of the first protective member 10 is on an extension line of the extension direction of the connection bracket 50, the load during a frontal collision is transmitted quickly to the protrusion 14, and the cowl top 3 can be pushed up early. This can further improve the protective performance of the wiring components 41.
  • the third protective member 30 overlaps with the convex portion 14 of the first protective member 10 when viewed from above. Therefore, when the convex portion 14 pushes up the cowl top 3, the third protective member 30 can also be pushed up together with the convex portion 14. This prevents the third protective member 30 from interfering with the wiring component 41, and improves the protective performance of the wiring component 41.
  • the above-described protective structure for the wiring component is merely an example, and the present invention is not limited to the above.
  • the on-board device is not limited to the FPDU 40, and the shape of the on-board device is not particularly limited.
  • the protective structure of this invention is applicable at least to on-board devices in which wiring components are connected from the rear.
  • the mounting position of the on-board device is also not limited to the left side in the vehicle width direction, and it may be mounted off to the right side or in the center in the vehicle width direction.
  • the on-board device is disposed on the right side of the accommodation chamber 2
  • the right side of the vehicle 1 is the outer side in the vehicle width direction
  • the left side of the vehicle 1 is the inner side in the vehicle width direction.
  • each member 10, 20, 30, 50 is an example and is not limited to the above-mentioned configuration.
  • the first protective member 10 may be sized to cover the entire side or rear of the in-vehicle device
  • the fixing position may be the top or bottom surface of the in-vehicle device
  • the fixing points do not have to be arranged in a zigzag pattern when viewed from the side.
  • the convex portion 14 is not limited to the above-mentioned planar portion, and may be, for example, block-shaped or a surface portion formed with a convex curve.
  • the convex portion at least protrudes from the upper portion of the side of the in-vehicle device rearward of the rear surface of the in-vehicle device, and the shape and arrangement of the corner portion 14c are also an example, and the corner portion 14 may be omitted.
  • the second protective member 20 is fixed to the vehicle body at two points, the front and rear, and the rear fixing portion 25 is set to have lower rigidity than the front fixing portion 24, but the fixing position and number of fixings of the second protective member 20 are not limited to this. In addition, it is sufficient for the second protective member 20 to be provided with at least the vertical wall portion 21, and the bead 21a and extension portion 23a can be omitted.
  • the third protective member 30 is fixed to the left and right protective members 10 and 20, but may be fixed to an in-vehicle device in addition to or instead of the above.
  • the third protective member 30 may be sized to cover the entire wiring component 41 from above.
  • the shape and fixing position of the connection bracket 50 may be changed as appropriate depending on the arrangement of the in-vehicle equipment and the presence or absence of other fixing points, and the connection bracket 50 itself may be omitted.
  • a first protective member 10, a second protective member 20, a third protective member 30, and a connecting bracket 50 are provided, but it is sufficient that at least the first protective member 10 is provided, and the other members 20, 30, and 50 can be omitted.
  • This technology can be used in the manufacturing industry for on-board equipment to which wiring components are connected, and also in the manufacturing industry for vehicles equipped with such on-board equipment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Body Structure For Vehicles (AREA)
PCT/JP2023/009669 2023-03-13 2023-03-13 配線部品の保護構造 Ceased WO2024189742A1 (ja)

Priority Applications (2)

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PCT/JP2023/009669 WO2024189742A1 (ja) 2023-03-13 2023-03-13 配線部品の保護構造

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005112185A (ja) * 2003-10-08 2005-04-28 Honda Motor Co Ltd エンジン周辺機器の保護構造
JP2018114896A (ja) * 2017-01-19 2018-07-26 トヨタ自動車株式会社 電力制御装置の車載構造
JP2019084867A (ja) * 2017-11-02 2019-06-06 トヨタ自動車株式会社 電力制御装置の車載構造
JP2021030832A (ja) * 2019-08-22 2021-03-01 マツダ株式会社 車両前部構造
JP2021046008A (ja) * 2019-09-17 2021-03-25 スズキ株式会社 電動車両のパワーユニット搭載部構造
JP2022095282A (ja) * 2020-12-16 2022-06-28 トヨタ自動車株式会社 車両

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005112185A (ja) * 2003-10-08 2005-04-28 Honda Motor Co Ltd エンジン周辺機器の保護構造
JP2018114896A (ja) * 2017-01-19 2018-07-26 トヨタ自動車株式会社 電力制御装置の車載構造
JP2019084867A (ja) * 2017-11-02 2019-06-06 トヨタ自動車株式会社 電力制御装置の車載構造
JP2021030832A (ja) * 2019-08-22 2021-03-01 マツダ株式会社 車両前部構造
JP2021046008A (ja) * 2019-09-17 2021-03-25 スズキ株式会社 電動車両のパワーユニット搭載部構造
JP2022095282A (ja) * 2020-12-16 2022-06-28 トヨタ自動車株式会社 車両

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