Vehicle-mounted equipment mounting structure

Abstract

A structure 100 for mounting an in-vehicle device comprises: a pair of side members 11; a front end upper bar 15 (body front frame) located on the front side in the vehicle front-rear direction with respect to an FPDU (in-vehicle device) 2 disposed between the pair of side members 11; a holding member 20 that is fixed to one side member 11A of the pair of side members 11, that extends inward in the vehicle width direction, and that holds the FPDU 2 from below; and a connection member 40 that extends in the vehicle front-rear direction, and that is connected to the holding member 20 and the front end upper bar 15 at the location of a side end part 2c of the FPDU 2 on the side opposite the one side member 11A in the vehicle width direction.

Description

[Technical Field]

[0001] The present invention relates to a mounting structure for vehicle-mounted equipment, and more particularly to a mounting structure for vehicle-mounted equipment mounted on one of a pair of side members. [Background technology]

[0002] Conventionally, there are known techniques relating to a mounting structure for mounting an on-vehicle device such as a front power drive unit (FPDU) to a vehicle body frame. For example, Patent Document 1 describes a fixing structure for on-vehicle device in which a mounting base is connected to one side member, an inverter as on-vehicle device is mounted on the mounting base, and the inverter is connected to the mounting base and the side member via a fixing member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-90818 Summary of the Invention [Problem to be solved by the invention]

[0004] When vehicle-mounted equipment is attached to one side member offset in the vehicle width direction, as in the fixing structure described in Patent Document 1, the vehicle-mounted equipment also vibrates when the vehicle is subjected to vibration. At this time, forces in the vehicle's longitudinal, transverse, or vertical directions, along with moments resulting from these forces, are applied to the fixing portion of the vehicle-mounted equipment relative to the side member, which tends to impose a large load around the fixing portion. In particular, as the vehicle-mounted equipment becomes larger, the distance between the fixing portion and the center of gravity also increases, further increasing the load acting around the fixing portion. This may result in the vehicle-mounted equipment being unable to be stably attached to the side member.

[0005] In the fixing structure described in Patent Document 1, a fixing member connected to the front member is further attached to the center of the vehicle width direction of the vehicle-mounted equipment. However, with this structure, the side end of the vehicle-mounted equipment on the opposite side from one of the side members may move so that the vehicle-mounted equipment tilts around the center in the vehicle width direction, and the load acting around the fixing member may not be sufficiently reduced.

[0006] The present invention has been made in view of the above-mentioned problems, and its object is to provide a mounting structure for vehicle-mounted equipment that can stably mount vehicle-mounted equipment to a side member. [Means for solving the problem]

[0007] In order to achieve the above object, the mounting structure for vehicle-mounted equipment of the present invention includes a pair of side members, a vehicle front frame located forward in a vehicle longitudinal direction with respect to vehicle-mounted equipment arranged between the pair of side members, a holding member fixed to one of the pair of side members and extending inward in a vehicle width direction to hold the vehicle-mounted equipment from below, and a connecting member extending in the vehicle longitudinal direction to connect the holding member to the vehicle front frame at a side end position of the vehicle-mounted equipment on the opposite side in the vehicle width direction from the one side member. The connecting member has a first fixing portion fixed to the vehicle front frame, a second fixing portion fixed to the holding member, and an extending portion connecting the first fixing portion and the second fixing portion and extending in the vehicle longitudinal direction, the extending portion bifurcating into two from a midpoint in the vehicle longitudinal direction and extending in the vehicle longitudinal direction to the rear end, and has a first leg portion and a second leg portion fixed to the holding member at positions spaced apart from each other in the vehicle width direction, and the second fixing portion is provided at the rear ends of the first leg portion and the second leg portion. .

[0008] With this configuration, the side end of the vehicle-mounted equipment opposite the one side member can be supported by the vehicle front frame via the retaining member and the connecting member. As a result, displacement of the vehicle-mounted equipment relative to the side member and the vehicle front frame, particularly displacement of the side end of the vehicle-mounted equipment, can be more effectively suppressed, and stress applied to the fixed portion between the retaining member and one side member can be reduced. Therefore, the vehicle-mounted equipment can be stably attached to the side member. Furthermore, the connecting member and the holding member can be firmly fixed at multiple locations, and the load acting on the fixed portion between the connecting member and the holding member can be distributed to the first leg and the second leg, thereby reducing the stress acting on the fixed portion when the vehicle is traveling.

[0009] Also ,beforePreferably, the extending portion has a first surface portion extending in the vehicle longitudinal direction and a second surface portion extending in the vehicle longitudinal direction and intersecting the first surface portion to form a ridge line. With this configuration, the first surface portion and the second surface portion can increase the strength and rigidity of the connecting member, and can suppress displacement of the vehicle-mounted equipment while the vehicle is traveling.

[0010] Furthermore, it is preferable that the extension portion has a weakened portion formed at a midpoint in the vehicle longitudinal direction that is more easily bent than other portions when subjected to a force in the vehicle longitudinal direction in the attached state. With this configuration, when a frontal collision occurs and a force in the vehicle longitudinal direction is applied to the connecting member, the connecting member can be easily and quickly bent at the weakened portion. As a result, even if the connecting member is placed in a crushable zone that is set up to absorb energy in a frontal collision, it is possible to prevent interference with energy absorption in a frontal collision.

[0011] Furthermore, it is preferable that the weakened portion be formed in a central portion of the extension portion in the vehicle longitudinal direction and have a width in the vehicle width direction smaller than both ends in the vehicle longitudinal direction. With this configuration, the connecting member can be bent in the vehicle width direction at the weakened portion during a frontal collision of the vehicle. That is, the connecting member can be adjusted to bend in a targeted direction. Furthermore, by bending the connecting member in the vehicle width direction at the weakened portion, it is possible to suppress changes in the vertical positional relationship between the vehicle body front frame, the holding member, and the vehicle-mounted equipment connected by the connecting member. As a result, it is possible to suppress interference between the vehicle-mounted equipment and other components arranged above or below the vehicle-mounted equipment. Furthermore, it is possible to suppress interference between the connecting member and other components arranged above or below the connecting member.

[0012] Preferably, the weakened portions are formed on both sides of the extension portion in the vehicle width direction and at the same position in the vehicle front-rear direction. With this configuration, the connecting member can be more reliably bent in the vehicle width direction at the weakened portions in the event of a frontal collision of the vehicle.

[0013] Preferably, the weakened portion is formed by cutting out a portion of the extension portion, and the cutout portion on one side in the vehicle width direction has a larger cutout area in the vehicle front-rear direction than the cutout portion on the other side. With this configuration, in the event of a frontal collision of the vehicle, the connecting member can bend mainly at the cutout portion on one side in the vehicle width direction. In other words, it is possible to more precisely adjust the bending direction of the connecting member.

[0014] Preferably, the extension has a flange formed on at least one of the first surface and the second surface, which increases the strength and rigidity of the connecting member and suppresses displacement of the vehicle-mounted equipment while the vehicle is traveling.

[0016] Furthermore, it is preferable that the first leg and the second leg are branched off between the first surface and the second surface with the ridge line as a boundary. With this configuration, the first leg can be formed as a portion extending from the first surface, and the second leg can be formed as a portion extending from the second surface, making it easy to form the first leg and the second leg.

[0017] Preferably, the first fixing portion is formed to protrude from the front end of the extending portion to one side in the vehicle width direction, and the second fixing portion is formed to protrude from the rear end of the extending portion to the other side in the vehicle width direction. This configuration allows the force applied to the first fixing portion and the second fixing portion to be distributed to both sides in the vehicle width direction. In other words, the stress applied to the first fixing portion and the second fixing portion can be reduced, allowing the connecting member to be stably fixed to the vehicle front frame and the retaining member. [Effects of the Invention]

[0018] In the mounting structure for vehicle-mounted equipment of the present invention, the side end of the vehicle-mounted equipment opposite to the one side member can be supported by the vehicle body front frame via the retaining member and the connecting member, which makes it possible to reduce stress on the fixed part between the retaining member and the one side member. Therefore, the mounting structure for vehicle-mounted equipment of the present invention allows the vehicle-mounted equipment to be stably mounted to the side member. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is an explanatory diagram illustrating an example of a vehicle body structure to which a mounting structure for vehicle-mounted equipment according to an embodiment is applied; [Figure 2] 10 is an explanatory view of the periphery of a fixed portion between the retaining member and the side member, viewed from below and from the inside in the vehicle width direction. FIG. [Figure 3] FIG. [Figure 4] FIG. 10 is an explanatory diagram of the reinforcing member in an attached state, viewed from the outside in the vehicle width direction. [Figure 5] 10 is an explanatory diagram of the reinforcing member in an attached state, viewed from above and from the outside in the vehicle width direction. FIG. [Figure 6] FIG. 10 is a perspective view showing a connecting member attached to a front end upper bar and a retaining member. [Figure 7] FIG. [Figure 8] 10 is a side view of the connecting member as viewed from the other side in the vehicle width direction. FIG. [Figure 9] FIG. 10 is a perspective view showing the FPDU, the retaining member, and the connecting member attached to the front end upper bar. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0021] Fig. 1 is an explanatory diagram showing an example of a vehicle body structure to which a mounting structure for vehicle-mounted equipment according to an embodiment is applied. Fig. 1 shows the vicinity of the front part of the vehicle of the vehicle body structure 1. Fig. 1 is also a view of the vehicle body structure 1 as seen obliquely from above and from the outside in the vehicle width direction. The vehicle body structure 1 is applied to vehicles such as plug-in hybrid electric vehicles (PHEVs), hybrid electric vehicles (HEVs), and electric vehicles (BEVs) that are capable of external charging or external power supply, and is fitted with a front power drive unit 2 as vehicle-mounted equipment.

[0022] (Vehicle equipment: Front power drive unit) The front power drive unit 2, which is an on-vehicle device, is a unit for controlling a motor and a generator (not shown) mounted on a vehicle (not shown). In the following description, the front power drive unit will be referred to as "FPDU." The FPDU 2 has a housing 3 built-in with a motor control unit including an inverter for controlling the drive and regeneration of the motor, and a generator control unit including an inverter for controlling power generation by the generator (both not shown).

[0023] In this embodiment, as shown in FIG. 1 , the FPDU 2 extends between a pair of side members 11 to the center in the vehicle width direction. The FPDU 2 is fixed to one of the side members 11 near the front end 2a in the vehicle longitudinal direction by a fixing portion 3a provided on the housing 3 via a retaining member 20 and a reinforcing member 30. The FPDU 2 is also fixed to one of the side members 11 by a fixing portion 3b on the vehicle longitudinal direction rear end 2b side by a supporting portion 16 for supporting a power plant (not shown). The FPDU 2 is also fixed to the front end upper bar 15 via the retaining member 20 and a connecting member 40. The pair of side members 11, the front end upper bar 15, the retaining member 20, the reinforcing member 30, and the connecting member 40 will be described later.

[0024] (Body structure) Returning to the description of the vehicle body structure 1, as shown in Fig. 1, the vehicle body structure 1 includes a vehicle body frame 10, a retaining member 20, a reinforcing member 30, and a connecting member 40. A pair of side members 11 and a front end upper bar 15 included in the vehicle body frame 10, the retaining member 20, the reinforcing member 30, and the connecting member 40 constitute a mounting structure 100 for vehicle-mounted equipment according to the embodiment.

[0025] (body frame) The body frame 10 is the skeleton of the vehicle that supports vehicle components such as a suspension (not shown), and includes a pair of side members 11, a front bumper beam 12, a cross member 13, a pair of headlamp supports 14, and a front end upper bar 15.

[0026] The pair of side members 11 are frames extending in the vehicle's fore-and-aft direction, with one positioned on each side in the vehicle's width direction. Side member 11 is a frame with a rectangular tubular cross section that connects an inner frame and an outer frame. Side member 11 includes an upper surface 11a that faces upward in the up-down direction (vertical direction), a lower surface 11b that faces downward in the up-down direction, an outer surface 11c (second outer surface) that faces outward in the vehicle's width direction, and an inner surface 11d that faces inward in the vehicle's width direction.

[0027] The front bumper beam 12 is a frame extending in the vehicle width direction and connected to the side members 11 via crash boxes 17. The cross member 13 is a frame extending in the vehicle width direction and connected to both of a pair of headlamp supports 14. The pair of headlamp supports 14 are frames extending in the vertical direction, and are fixed by connection at their vertical center portions to the pair of side members 11, one by one. The pair of headlamp supports 14 are connected at their upper ends to a front end upper bar 15, and at their lower ends to the cross member 13. The front end upper bar 15 is a front body frame that extends in the vehicle width direction and is located forward of the FPDU 2 in the vehicle longitudinal direction, and connects the upper ends of the pair of headlamp supports 14 to each other.

[0028] (holding member) 2 is an explanatory diagram of the area around the fixing portion 24 between the retaining member 20 and the side member 11, viewed from below and from the inside in the vehicle width direction. The retaining member 20 will be described below based on the direction in which it is attached to the side member 11. In the following description, one side member 11 to which the retaining member 20 is fixed will be referred to as the "side member 11A" as appropriate. As shown in FIGS. 1 and 2, the retaining member 20 is an L-shaped member when viewed from the front-rear direction of the vehicle, and has a pair of side surface portions 21, a contact surface portion 22, and a mounting surface portion 23.

[0029] The pair of side surface portions 21 are plate-shaped portions extending in the vehicle width direction and are disposed opposite each other in the vehicle longitudinal direction. The lower ends of the pair of side surface portions 21 are arch-shaped, drawing an upwardly convex curve as they move away from the side member 11A, toward the mounting surface portion 23. In addition, as shown in FIG. 2, a gap is provided between the pair of side surface portions 21 in the vehicle longitudinal direction, making the retaining member 20 easily crushable in the vehicle longitudinal direction.

[0030] The abutment surface portions 22 are plate-shaped portions extending in the vehicle longitudinal direction from the outer ends of the pair of side surface portions 21 in the vehicle width direction. In this embodiment, the abutment surface portions 22 are configured by abutting abutment surface portions 221, 222 (see FIGS. 4 and 5) extending from each side surface portion 21 against each other and connecting them with bolts and nuts (not shown). The abutment surface portions 22 are located above the side member 11A when the retaining member 20 is attached to the side member 11A. The abutment surface portions 22 include an outer surface 20a (first outer surface) facing outward in the vehicle width direction. In this embodiment, the outer surface 20a is located outward in the vehicle width direction than the outer surface 11c of the side member 11.

[0031] The placing surface portion 23 is a plate-like portion extending inward in the vehicle width direction, and is connected to the upper ends of the pair of side surface portions 21. The placing surface portion 23 may extend from either one of the pair of side surface portions 21 and be connected to the other of the pair of side surface portions. A gap is provided between the placing surface portion 23 and the upper end of the abutting surface portion 22.

[0032] The retaining member 20 configured as described above has a plurality of fixing portions 24 (see FIGS. 2 and 5) formed on a pair of side surface portions 21 at the end portion 20b on the side member 11A side. The plurality of fixing portions 24 include fixing portions 241, 242 (see FIG. 5) that abut against the upper surface 11a of the side member 11A and fixing portions 243, 244 (see FIG. 2) that abut against the inner surface 11d of the side member 11A. The retaining member 20 is fixed to the side member 11A by connecting the fixing portions 241, 242, 243, 244 with bolts and nuts (not shown).

[0033] The underside of the FPDU 2 near its front end 2a is placed on the mounting surface 23 of the holding member 20, and the mounting surface 23 and the fixing portion 3a of the FPDU 2 are fixed by connecting with bolts and nuts (not shown). As a result, the holding member 20 is fixed to one of the pair of side members 11 and holds the FPDU 2 near its front end 2a from below. As shown in FIG. 1, the holding member 20 is fixed by connecting with the front end upper bar 15 via a connecting member 40 at an end 20c opposite the side member 11A.

[0034] (reinforcing member) Next, with reference to Figures 3 to 5, the reinforcing member 30 will be described based on the direction in which it is attached to the side member 11 and the retaining member 20. Figure 3 is a perspective view showing the reinforcing member 30. Figure 4 is an explanatory diagram of the reinforcing member 30 in the attached state, viewed from the outside in the vehicle width direction. Figure 5 is an explanatory diagram of the reinforcing member in the attached state, viewed from above and from the outside in the vehicle width direction. The reinforcing member 30 is a hat-shaped cross-sectional member that includes a U-shaped portion 31 and a pair of flange portions 32.

[0035] (U-shaped part) As shown in FIG. 3 , the U-shaped portion 31 has a contact surface 311 and a pair of side surfaces 312. The contact surface 311 is a plate-like portion extending vertically with a predetermined length in the vehicle longitudinal direction. Holes 311a and 311b are formed in the contact surface 311. The pair of side surfaces 312 are plate-like portions extending inward in the vehicle width direction from both ends of the contact surface 311 in the vehicle longitudinal direction. Therefore, the U-shaped portion 31 has a cross section taken along a horizontal direction perpendicular to the vertical direction, which is convex outward in the vehicle width direction, due to the contact surface 311 and the pair of side surfaces 312. The contact surface 311 and the pair of side surfaces 312 are continuously connected by an R-shape with a predetermined radius of curvature. Note that the contact surface 311 and the pair of side surfaces 312 may be connected linearly without the R-shape.

[0036] The U-shaped portion 31 has a lower half 31B that is vertically narrower in the vehicle longitudinal direction than the upper half 31A. The upper half 31A has a pair of side surfaces 312 that extend parallel to each other from the upper end 31a and, as shown in FIGS. 1 and 4, cover a portion of the retaining member 20 from the sides in the vehicle longitudinal direction. As shown in FIG. 5, a gap S is provided between the pair of side surfaces 312 of the upper half 31A and the pair of side surfaces 21 of the retaining member 20. On the other hand, the pair of side surfaces 312 of the lower half 31B extend while curving toward each other from the upper half 31A toward the lower end 31b, and extend parallel to each other up to the lower end 31b. Note that the portions of the pair of side surfaces 312 of the lower half 31B that extend toward each other may be formed linearly.

[0037] The upper end 31a of the U-shaped portion 31 extends linearly in the vehicle longitudinal direction and is an open end that opens in the vertical direction. Meanwhile, the lower end 31b of the U-shaped portion 31 includes a tapered portion 31c that extends downward from the front to the rear in the vehicle longitudinal direction, and a straight portion 31d that extends straight from the tapered portion 31c to the rear in the vehicle longitudinal direction. As a result, the front portion of the U-shaped portion 31, where the tapered portion 31c is formed, is shorter in the vertical direction than the rear portion, where the straight portion 31d is formed. Similarly to the upper end 31a, the lower end 31b is also an open end that opens in the vertical direction. By making the upper end 31a and the lower end 31b of the U-shaped portion 31 open in this way, the U-shaped portion 31 can be made to be easily crushed in the vehicle longitudinal direction.

[0038] (flange part)

[0039] As shown in Fig. 3, the pair of flange portions 32 protrude in the vehicle longitudinal direction from the ends of the pair of side surface portions 312 of the U-shaped portion 31 opposite the abutment surface portions 311. As shown in Figs. 1, 4 and 5, the pair of flange portions 32 are formed to abut against the outer surface 11c of the side member 11A with the abutment surface portions 311 abutting against the outer surface 20a. The pair of flange portions 32 includes a first flange portion 321 and a second flange portion 322.

[0040] As shown in FIG. 4, the first flange portion 321 protrudes forward in the vehicle longitudinal direction from one of the pair of side surface portions 312 that is located forward in the vehicle longitudinal direction. Holes 321a and 321b are formed in the first flange portion 321 to insert bolts for fastening to the outer surface of the side member 11A. The first flange portion 321 is formed to have a sufficient contact area with the outer surface 11c of the side member 11, is capable of forming the holes 321a and 321b, and is large enough to avoid interference with other members. In this embodiment, the first flange portion 321 is formed to have a shorter length in the vertical direction than the second flange portion 322, and extends downward to the center of the side member 11A in the vertical direction.

[0041] As shown in FIG. 4, the second flange portion 322 protrudes rearward in the vehicle longitudinal direction from the other of the pair of side surface portions 312 that is located rearward in the vehicle longitudinal direction. Holes 322a and 322b are formed in the second flange portion 322 to insert bolts for fastening to the outer surface of the side member 11A. The second flange portion 322 is formed to a size that is large enough to contact the outer surface 11c of the side member 11, allows the holes 322a and 322b to be formed, and avoids interference with other members. In this embodiment, the second flange portion 322 extends to the lower end portion 11e of the side member 11A. As shown in FIGS. 1 and 4, the side member 11A has a shape in which a portion 11f near the bottom end is recessed inward in the vehicle width direction, and the "lower end portion 11e of the side member 11A" refers to the lower end of the portion of the side member 11A that extends in a flat plate shape.

[0042] (Reinforcing member mounting structure) 1, 4, and 5, the reinforcing member 30 configured as described above is disposed so that the contact surface 311 of the U-shaped portion 31 contacts the outer surface 20a of the holding member 20. At this time, the pair of side surface portions 312 of the upper half portion 31A cover parts of the pair of side surface portions 21 of the holding member 20 from the sides in the vehicle longitudinal direction. The pair of flange portions 32 contacts the outer surface 11c of the side member 11. The contact surface portion 311 of the U-shaped portion 31 is then fixed to the outer surface 20a of the holding member 20 at the hole portions 311a and 311b by connecting with bolts and nuts (not shown). The pair of flange portions 32 are further fixed to the outer surface 11c of the side member 11 at the hole portions 321a, 321b, 322a, and 322b by connecting with bolts and nuts (not shown). As a result, the reinforcing member 30 abuts across the outer surface 20a of the holding member 20 and the outer surface 11c of the side member 11A, and the outer surface 20a and the outer surface 11c are connected to each other.

[0043] (connecting member) Next, the connecting member 40 will be described with reference to Fig. 6 to Fig. 9. Fig. 6 is a perspective view showing the connecting member 40 attached to the front end upper bar 15 and the holding member 20. Fig. 7 is a plan view showing the connecting member 40. Fig. 8 is a side view of the connecting member as viewed from the other side in the vehicle width direction. Fig. 9 is a perspective view showing the connecting member 40 attached to the FPDU 2, the holding member 20, and the front end upper bar 15.

[0044] The connecting member 40 will be described below based on the direction in which it is attached to the front-end upper bar 15 and the holding member 20. In the following description, the upper side in Fig. 7 will be referred to as "one side in the vehicle width direction" and the lower side as "the other side in the vehicle width direction," and the upper side in Fig. 8 will be referred to as "one side in the vertical direction" and the lower side as "the other side in the vertical direction."

[0045] As shown in Figure 6, the connecting member 40 has a first fixing portion 51 fixed to the front end upper bar 15, second fixing portions 52, 53 fixed to the retaining member 20, and an extending portion 44 connecting the first fixing portion 51 and the second fixing portions 52, 53 and extending in the fore-and-aft direction of the vehicle.

[0046] (extension part) The extending portion 44 has a first surface portion 41 and a second surface portion 42. The first surface portion 41 is a plate-shaped portion extending in the vehicle longitudinal direction and the vehicle width direction. The second surface portion 42 is a plate-shaped portion extending in the vehicle longitudinal direction and the vehicle vertical direction. The second surface portion 42 intersects with the first surface portion 41 to form a ridge line 43. The "ridge line" here is not limited to a linear corner that is a boundary between surfaces, but also includes a chamfered curved surface as shown in FIG. 6. In other words, the ridge line 43 is a portion that connects the first surface portion 41 and the portion of the second surface portion 42 that extends in the vertical direction in a curved manner. Note that the ridge line 43 may also be a linear corner that is a boundary between the first surface portion 41 and the second surface portion.

[0047] (Detailed structure of the first surface) 6 and 7, the first surface portion 41 is formed with a base portion 41A extending in the vehicle front-rear direction, a first fixing portion 51, and an equipment fixing portion 55. The base portion 41A is also formed with a first fragile portion 81, which will be described later.

[0048] The first fixing portion 51 protrudes from the base portion 41A toward one side in the vehicle width direction on the front end 40a side, which is one end of the extending portion 44 in the vehicle longitudinal direction. As shown in Fig. 7, the first fixing portion 51 is formed with a hole 51a for inserting a bolt 91 (see Fig. 6) therethrough.

[0049] The device fixing portion 55 protrudes from the base 41A toward one side in the vehicle width direction on the side of the rear end 40b, which is the other end of the extension portion 44 in the vehicle front-rear direction. The device fixing portion 55 has a boss support portion 551 for supporting a boss portion 3c (see FIG. 9) formed on the housing 3 of the FPDU 2, and the boss support portion 551 is formed with a hole portion 55a for inserting a bolt 94 (see FIG. 9). The device fixing portion 55 also has a first-face portion-side flange portion 61 formed therein, which extends along one end on the vehicle width direction and rises from the first face portion 41 toward one side in the up-down direction.

[0050] Furthermore, a first leg portion 71 extends from the first surface portion 41. As shown in FIGS. 6 and 8, the first leg portion 71 extends from the equipment fixing portion 55 to the other side in the up-down direction toward the rear end 40b. A second fixing portion 53 is formed at the rear end of the first leg portion 71, extending parallel to the vehicle longitudinal direction and the vehicle width direction. As shown in FIG. 7, a hole portion 53a is formed in the second fixing portion 53 for inserting a bolt 92 (see FIG. 6) therethrough.

[0051] (Detailed structure of the second side) As shown in Figure 8, the second surface portion 42 extends the same length in the vertical direction from the front end 40a of the extension portion 44 to near the midpoint 40c in the vehicle's fore-and-aft direction, and is formed so as to expand to the other side in the vertical direction as it moves from near the midpoint 40c in the vehicle's fore-and-aft direction toward the rear end 40b of the extension portion 44.

[0052] 6 and 7, a second surface portion-side flange portion 62 that rises to the other side in the vehicle width direction is formed at the lower end of the second surface portion 42. The second surface portion-side flange portion 62 extends with a constant width in the vehicle width direction from the front end 40a side of the extending portion 44 to partway in the vehicle front-rear direction, excluding a second weak portion 82 described later.

[0053] 6 and 7, a second fixing portion 52 is formed at the lower end of the second surface portion 42, and protrudes more to the other side in the vehicle width direction than the second surface portion-side flange portion 62. The second fixing portion 52 is formed contiguous with the second surface portion-side flange portion 62 and extends from the second surface portion-side flange portion 62 to the rear end 40b of the extending portion 44. The second fixing portions 52, 53 are provided at the same position in the up-down direction. As shown in FIG. 7, the second fixing portion 52 is formed with a hole portion 52a for inserting a bolt 93 (see FIG. 6).

[0054] 6, the second fixing portion 52 is provided with a positioning pin 52p. As shown in FIG. 9, the positioning pin 52p is inserted into a hole 3e of a boss 3d formed in the housing 3 of the FPDU 2. The area around the positioning pin 52p of the second fixing portion 52 is formed as a base 521 that is pushed up to one side in the vertical direction. The positioning pin 52p is inserted into a hole formed in the base 521 from the other side in the vertical direction, and is fixed to the surface of the other side in the vertical direction of the base 521.

[0055] 6, the portion of the second surface 42 on the rear end 40b side (the portion extending to the other side in the up-down direction) and the second fixing portion 52 form the second leg 72 of the connecting member 40. That is, the extending portion 44 branches into two from a position midway in the vehicle fore-and-aft direction and extends in the vehicle fore-and-aft direction and up-and-down direction to the rear end 40b, and has a first leg 71 and a second leg 72 that are fixed to the retaining member 20 at positions spaced apart from each other in the vehicle width direction. The first leg 71 and the second leg 72 branch off between the first surface 41 and the second surface 42, with the ridge line 43 as the boundary.

[0056] (Weak part) Furthermore, in this embodiment, the extending portion 44 has a weakened portion 80 formed at the midpoint 40c in the vehicle front-rear direction. The weakened portion 80 is formed in the first surface portion 41 and the second surface portion-side flange portion 62. The weakened portion 80 includes a first weakened portion 81 and a second weakened portion 82.

[0057] 6 and 7, the first weak portion 81 is provided in the center of the base 41A of the first surface portion 41 in the vehicle longitudinal direction. The first weak portion 81 is a cutout portion formed by cutting out the base 41A in a tapered shape so that one end of the base 41A in the vehicle width direction extends to the other side in the vehicle width direction as it approaches the center in the vehicle longitudinal direction. In other words, the first weak portion 81 is a portion whose width in the vehicle width direction is shorter than both end portions of the base 41A. The first weak portion 81 has a larger cutout range in the vehicle longitudinal direction than the second weak portion 82.

[0058] The second weak portion 82 is provided in the center of the second panel-side flange portion 62 in the vehicle longitudinal direction. The second weak portion 82 is a cutout portion formed by cutting out a portion of the second panel-side flange portion 62. In other words, the second weak portion 82 is a portion whose width in the vehicle width direction is shorter than other portions of the second panel-side flange portion 62, including both end portions. The second weak portion 82 is formed at the same position in the vehicle longitudinal direction as the first weak portion 81. In other words, the first weak portion 81 and the second weak portion 82 are formed to be aligned along the vehicle width direction, as shown in FIG. 7 . Note that "formed at the same position" includes the case where at least a portion of the first weak portion 81 and at least a portion of the second weak portion 82 are aligned along the vehicle width direction.

[0059] (Attachment structure of connecting member) 6, the connecting member 40 configured as described above is fixed to the fixing portion 15a provided on the front end upper bar 15 through the hole 51a of the first fixing portion 51 by connecting with a bolt 91 and a nut (not shown). The connecting member 40 is also fixed to the mounting surface portion 23 of the holding member 20 through the hole 52a of the second fixing portion 52 and the hole 53a of the second fixing portion 53 by connecting with bolts 92 and 93 and a nut (not shown).

[0060] 9, the connection member 40 supports the boss 3c of the FPDU 2 by a boss support portion 551 provided on the device fixing portion 55, and is fixed to the boss 3c by connecting it to the hole 55a with a bolt 94 and a nut (not shown). At this time, the positioning of the FPDU 2 can be easily performed by inserting the positioning pin 52p provided on the second fixing portion 52 of the connection member 40 into the hole 3e of the boss 3d of the FPDU 2.

[0061] As a result, the connecting member 40 is fixed by connection to the front end upper bar 15 and the holding member 20, and is also fixed by connection to the FPDU 2. In other words, the FPDU 2 is also held by the front end upper bar 15 via the holding member 20 and the connecting member 40 at the position of the side end 2c opposite to the side member 11A.

[0062] (Effects of the embodiment) As described above, the mounting structure 100 for vehicle-mounted equipment according to the embodiment comprises a pair of side members 11, a front end upper bar (vehicle body front frame) 15 located on the front side in the vehicle longitudinal direction relative to the FPDU (vehicle-mounted equipment) 2 arranged between the pair of side members 11, a retaining member 20 fixed to one side member 11A of the pair of side members 11 and extending inward in the vehicle width direction to hold the FPDU2 from below, and a connecting member 40 extending in the vehicle longitudinal direction and connecting the retaining member 20 to the front end upper bar 15 at the side end 2c of the FPDU2 opposite the one side member 11A in the vehicle width direction.

[0063] With this configuration, the side end 2c of the FPDU 2 opposite the one side member 11A can be supported by the front-end upper bar 15 via the retaining member 20 and the connecting member 40. As a result, displacement of the FPDU 2 relative to the side member 11A and the front-end upper bar 15, particularly displacement of the side end 2c of the FPDU 2, can be more effectively suppressed, and stress applied to the fastening portion 24 between the retaining member 20 and the one side member 11A can be reduced. Therefore, the mounting structure 100 for vehicle-mounted equipment according to the embodiment enables the FPDU 2 to be stably mounted to the side member 11A. Furthermore, because the connecting member 40 is connected to the retaining member 20 that holds the front portion of the FPDU 2, i.e., the vicinity of the front end 2a, the size of the connecting member 40 can be suppressed compared to, for example, a case in which the connecting member 40 is attached to the rear end 2b of the FPDU 2, thereby enabling space savings.

[0064] Furthermore, the connecting member 40 has a first fixing portion 51 fixed to the front end upper bar 15, a second fixing portion 52 fixed to the retaining member 20, and an extending portion 44 connecting the first fixing portion 51 and the second fixing portion 52 and extending in the longitudinal direction of the vehicle, the extending portion 44 having a first surface portion 41 extending in the longitudinal direction of the vehicle and a second surface portion 42 extending in the longitudinal direction of the vehicle and intersecting with the first surface portion 41 to form a ridge line 43. With this configuration, the first surface portion 41 and the second surface portion 42 can increase the strength and rigidity of the connecting member 40, and can suppress displacement of the FPDU 2 while the vehicle is traveling.

[0065] Furthermore, the extending portion 44 has a weakened portion 80 formed at a midpoint 40c in the vehicle longitudinal direction that is more likely to bend than other portions when subjected to a force in the vehicle longitudinal direction in the attached state. With this configuration, when a frontal collision occurs on the vehicle and a force in the vehicle longitudinal direction is applied to the connecting member 40, the connecting member 40 can be easily and quickly bent at the weakened portion 80. As a result, even if the connecting member 40 is placed in a crushable zone that is set to absorb energy in a frontal collision, it is possible to prevent impediment to energy absorption in a frontal collision.

[0066] Furthermore, the fragile portion 80 is formed in the center of the extension portion 44 in the vehicle front-rear direction, and has a width in the vehicle width direction that is smaller than both ends in the vehicle front-rear direction. This configuration allows the connection member 40 to bend in the vehicle width direction at the fragile portion 80 during a frontal collision. That is, the connection member 40 can be adjusted to bend in a desired direction. Furthermore, by bending the connection member 40 in the vehicle width direction at the fragile portion 80, it is possible to prevent changes in the vertical positional relationship between the front-end upper bar 15, the holding member 20, and the FPDU 2, which are connected by the connection member 40. As a result, it is possible to prevent interference between the FPDU 2 and other components disposed above or below the FPDU 2. Furthermore, it is possible to prevent interference between the connection member 40 and other components disposed above or below the connection member 40.

[0067] Moreover, the weak portions 80 are formed on both sides of the extending portion 44 in the vehicle width direction and at the same position in the vehicle front-rear direction. With this configuration, the connecting member 40 can be bent in the vehicle width direction more reliably at the weak portions 80 in the event of a frontal collision of the vehicle.

[0068] Furthermore, the fragile portion 80 is formed by cutting out a portion of the extending portion 44, and the cutout portion (first fragile portion 81) on one side in the vehicle width direction has a larger cutout range in the vehicle front-rear direction than the cutout portion (second fragile portion 82) on the other side. With this configuration, in the event of a frontal collision of the vehicle, the connecting member 40 can be bent mainly at the cutout portion (first fragile portion 81) on one side in the vehicle width direction. With the configuration of this embodiment, in the event of a frontal collision of the vehicle, the connecting member 40 is likely to bend so as to present a convex shape toward one side in the vehicle width direction as shown in FIGS. 6 and 7. In this way, by forming one first fragile portion 81 as a larger cutout than the other second fragile portion 82, it becomes possible to more precisely adjust the bending direction of the connecting member 40.

[0069] Furthermore, the extension portion 44 has a first surface portion-side flange portion (flange portion) 61 formed on the first surface portion 41 and a second surface portion-side flange portion (flange portion) 62 formed on the second surface portion 42. This configuration can increase the strength and rigidity of the connection member 40, and can suppress displacement of the FPDU 2 while the vehicle is traveling. Note that, as described above, by forming the fragile portion 80 in the connection member 40, the connection member 40 can bend at the fragile portion 80 during a frontal collision of the vehicle. Therefore, even if the first surface portion-side flange portion 61 and the second surface portion-side flange portion 62 are formed, it is possible to sufficiently absorb energy during a frontal collision.

[0070] Furthermore, the extension portion 44 branches into two at a midpoint in the vehicle longitudinal direction and extends in the vehicle longitudinal direction to the rear end 40b. The extension portion 44 has a first leg portion 71 and a second leg portion 72 that are fixed to the holding member 20 at positions spaced apart in the vehicle width direction, with the second fixing portion 53 (second fixing portion) being provided at the rear end of the first leg portion 71 and the second fixing portion 52 (second fixing portion) being provided at the rear end of the second leg portion 72. This configuration allows the connection member 40 and the holding member 20 to be firmly fixed at multiple locations. Furthermore, the load applied to the fixing portion between the connection member 40 and the holding member 20 can be distributed between the first leg portion 71 and the second leg portion 72, thereby reducing the stress applied to the fixing portion when the vehicle is traveling. Furthermore, by adjusting the vertical lengths of the first leg portion 71 and the second leg portion 72, the positional relationship between the first fixing portion 51 and the second fixing portions 52, 53 can be easily adjusted.

[0071] Furthermore, the first leg 71 and the second leg 72 branch off between the first surface 41 and the second surface 42, with the ridge line 43 as the boundary. With this configuration, the first leg 71 can be formed as a portion extending from the first surface 41, and the second leg 72 can be formed as a portion extending from the second surface 42, making it possible to easily form the first leg 71 and the second leg 72. Furthermore, compared to a case in which the rear end 40b side of the extension 44 is extended in the vertical direction without branching the extension 44 into the first leg 71 and the second leg 72, with the first surface 41, the second surface 42, and the ridge line 43 connected, the connection member 40 can be manufactured more easily.

[0072] Furthermore, the first fixing portion 51 is formed to protrude from the front end 40a of the extending portion 44 to one side in the vehicle width direction, and the second fixing portion 52 is formed to protrude from the rear end 40b of the extending portion 44 to the other side in the vehicle width direction. With this configuration, the force applied to the first fixing portion 51 and the second fixing portion 52 can be distributed to both sides in the vehicle width direction and borne by them. In other words, the stress applied to the first fixing portion 51 and the second fixing portion 52 can be reduced, and the connecting member 40 can be stably fixed to the front-end upper bar 15 and the retaining member 20.

[0073] (Variation) Although the description of the embodiment has been completed above, aspects of the present invention are not limited to this embodiment. For example, in this embodiment, the mounting structure 100 for vehicle-mounted equipment according to the embodiment has been described using the FPDU 2 as an example of vehicle-mounted equipment, but the vehicle-mounted equipment is not limited to the FPDU 2 and may be other components mounted on the vehicle and fixed to one of the pair of side members 11. Furthermore, the mounting structure 100 for vehicle-mounted equipment according to the embodiment may be applied to vehicles with any power source, not limited to plug-in hybrid vehicles, hybrid vehicles, and electric vehicles.

[0074] In addition, in this embodiment, the holding member 20 holds the FPDU 2 near the front end 2a in the vehicle's fore-and-aft direction, but the holding member 20 may also hold the FPDU 2 from below in the center or rear, i.e., near the rear end 2b, in the vehicle's fore-and-aft direction.

[0075] In addition, in this embodiment, the FPDU 2 extends to the center of the vehicle width between the pair of side members 11, but the FPDU 2 may extend to any position in the vehicle width direction as long as it can stably hold the FPDU 2 and does not interfere with other components. The same applies to the vertical position of the FPDU 2. Therefore, the vertical length of the holding member 20 is not limited to that shown in this embodiment, and may be changed depending on the vertical position of the FPDU 2.

[0076] In addition, in this embodiment, the connecting member 40 is fixed to the front end upper bar 15 as the front frame of the vehicle body, but the connecting member 40 may also be fixed to another vehicle body frame located in front of the vehicle-mounted equipment.

[0077] Furthermore, as long as the FPDU 2 can be stably held by the vehicle front frame, the connecting member 40 may be fixed only to the vehicle front frame and the holding member 20 without being fixed to the FPDU 2.

[0078] Furthermore, connecting member 40 does not have to have first surface 41, second surface 42, and ridge line 43, as long as it extends in the vehicle front-rear direction and is fixed to the vehicle front frame and retaining member 20. For example, connecting member 40 may have only one of first surface 41 and second surface 42, and have a fixing portion fixed to the vehicle front frame at front end 40a and a fixing portion fixed to retaining member 20 at rear end 40b.

[0079] The fragile portion 80 may be omitted from the connecting member 40. Either the first fragile portion 81 or the second fragile portion 82 may be omitted from the connecting member 40. The first fragile portion 81 and the second fragile portion 82 may be disposed at different positions in the vehicle longitudinal direction. The first fragile portion 81 and the second fragile portion 82 may be formed by cutouts of the same size. The fragile portion 80 may be provided on the second surface portion 42 by cutting out a portion of the second surface portion 42.

[0080] Furthermore, the connecting member 40 may be bent in the vertical direction at the weakened portion 80 in the event of a frontal collision of the vehicle.

[0081] Furthermore, the first surface portion side flange portion 61 and the second surface portion side flange portion 62 may be omitted from the connecting member 40.

[0082] Furthermore, both the first fixing portion 51 and the second fixing portion 52 may extend to one side in the vehicle width direction. Furthermore, as long as the connecting member 40 can be stably fixed to the retaining member 20, either the second fixing portion 52 or the second fixing portion 53 may be omitted. When the second fixing portion 52 is omitted, if there is no need to adjust the vertical positional relationship between the first fixing portion 51 and the second fixing portion 53, the first fixing portion 51 and the second fixing portion 53 may be provided at the same vertical position. In this case, the first leg portion 71 and the second leg portion 72 may be omitted from the connecting member 40. In other words, the second fixing portion 53 may extend parallel to the first surface portion 41. Furthermore, the first leg portion 71 and the second leg portion 72 are not limited to being bounded by the ridge line 43, and may branch off at any position on the connecting member 40. [Explanation of symbols]

[0083] 1. Body structure 2 FPDU (vehicle mounted device) 2c side end 10 Body frame 11 Pair of side members 11A Side member 15 Front end upper bar (front frame) 20 Retaining member 30 Reinforcement member 40 Connecting member 40a front end 40b rear end 40c middle part 41 First side 42 Second side part 43 Ridgeline 44 Extension 51 1st fixed part 52, 53 Second fixed part 61 First surface side flange (flange) 62 Second surface side flange (flange) 71 1st leg 72 Second leg 80 Weakened part 81 First weak part 82 Second weak part 100 Mounting structure for vehicle-mounted equipment

Claims

1. A pair of side members; a vehicle front frame positioned forward in a vehicle longitudinal direction with respect to a vehicle-mounted device disposed between the pair of side members; a holding member fixed to one of the pair of side members, extending inward in the vehicle width direction, and holding the vehicle-mounted equipment from below; a connecting member extending in a vehicle longitudinal direction and connected to the holding member and the vehicle front frame at a side end position of the vehicle-mounted equipment on the opposite side from the one side member in the vehicle width direction; Equipped with the connecting member has a first fixing portion fixed to the vehicle body front frame, a second fixing portion fixed to the holding member, and an extending portion connecting the first fixing portion and the second fixing portion and extending in the front-rear direction of the vehicle, the extension portion branches into two at a midpoint in the vehicle longitudinal direction, extends in the vehicle longitudinal direction to a rear end, and has a first leg portion and a second leg portion fixed to the holding member at positions spaced apart from each other in the vehicle width direction; The second fixing portion is provided at the rear end of the first leg portion and the second leg portion. Mounting structure for vehicle-mounted equipment.

2. The extension portion has a first surface portion extending in the fore-and-aft direction of the vehicle, and a second surface portion extending in the fore-and-aft direction of the vehicle and intersecting the first surface portion to form a ridge line. The mounting structure for vehicle-mounted equipment according to claim 1.

3. 2. The mounting structure for vehicle-mounted equipment according to claim 1, wherein the extension portion has a weakened portion formed in a midway portion in the vehicle longitudinal direction that is more easily bent than other portions when subjected to a force in the vehicle longitudinal direction in the mounted state.

4. 4. The mounting structure for vehicle-mounted equipment according to claim 3, wherein the weakened portion is formed in a central portion of the extension portion in the vehicle longitudinal direction, and has a width in the vehicle width direction smaller than both end portions in the vehicle longitudinal direction.

5. 5. The mounting structure for vehicle-mounted equipment according to claim 4, wherein the weakened portions are formed on both sides of the extension portion in the vehicle width direction and at the same position in the vehicle front-rear direction.

6. The fragile portion is formed by cutting out a part of the extending portion, The cutout portion on one side in the vehicle width direction has a larger cutout range in the vehicle front-rear direction than the cutout portion on the other side. The mounting structure for vehicle-mounted equipment according to claim 5.

7. The mounting structure for vehicle-mounted equipment according to claim 2 , wherein the extending portion has a flange portion formed on at least one of the first surface portion and the second surface portion.

8. The mounting structure for vehicle-mounted equipment according to claim 2 , wherein the first leg portion and the second leg portion branch off between the first surface portion and the second surface portion with the ridge line as a boundary.

9. 9. The mounting structure for vehicle-mounted equipment according to claim 1, wherein the first fixing portion is formed to protrude from a front end of the extension portion to one side in the vehicle width direction, and the second fixing portion is formed to protrude from a rear end of the extension portion to the other side in the vehicle width direction.

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