Mounting structure

Abstract

To provide a mounting structure which can secure a space for housing wiring and a pipe etc. by an efficient layout of an electronic component.SOLUTION: A mounting structure 1 of an electronic device 40 has: side members 5L which are disposed spaced apart in a vehicle width direction; a first cross member 20F disposed in a direction intersecting with the side members 5L; a second cross member 20R which is disposed spaced apart from the first cross member 20F to the rear side; and a support part 25 disposed over the first cross member 20F and the second cross member 20R. The electronic device 40 is mounted over one of the first cross member 20F and the second cross member 20R and the support part 25. A space part 14 formed on a floor panel has: a second space part 14B at the housing side of the electronic device 40; and a first space part 14A opposite to the second space part 14B. The first space part 14A houses wiring 41 and a pipe 42.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a mounting structure of electronic devices in a vehicle.

Background Art

[0002] Conventionally, vehicles such as electric vehicles equipped with electronic devices such as a power control unit (PCU) are known (for example, Patent Document 1). In the vehicle described in Patent Document 1 mentioned above, a first cross member and a second cross member are spanned between a pair of side members arranged on both sides in the vehicle width direction. Further, in the vehicle described in Patent Document 1 mentioned above, the electronic device is fixed by a support portion provided between the first cross member and the second cross member.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, the vehicle described in Patent Document 1 mentioned above is supposed to have a space portion where the floor panel protrudes into the vehicle interior. Further, in the vehicle described in Patent Document 1 mentioned above, the electronic device supported by the support portion (between the first cross member and the second cross member) is housed so as to be located at the center of the space portion. Therefore, the vehicle described in Patent Document 1 mentioned above has a structure in which it is difficult to secure a space for accommodating high-voltage wiring and cooling pipes in the front-rear direction in the space portion. That is, in the vehicle described in Patent Document 1 mentioned above, since the structure is such that there is little gap between the wall surface of the floor panel forming the space portion and the electronic device, the high-voltage wiring and the cooling pipes are structured to interfere with the floor panel and the electronic device.

[0005] Therefore, an object of the present invention is to provide a mounting structure capable of securing a space for accommodating wiring, piping, etc. by efficiently arranging electronic devices.

Means for Solving the Problems

[0006] (1) The mounting structure of the present invention provided to solve the above-described problems is a mounting structure for mounting electronic devices on a vehicle, and includes a pair of side members extending in the front-rear direction of the vehicle and arranged at a predetermined interval in the vehicle width direction, a first cross member arranged in a direction intersecting the pair of side members, a second cross member arranged in a direction intersecting the pair of side members and arranged at a predetermined interval on the rear side of the vehicle with respect to the first cross member, and a support portion arranged between the first cross member and the second cross member. The electronic device is mounted across either one of the first cross member and the second cross member and the support portion. The above-described mounting structure can arrange the electronic device closer to either one side of the first cross member or the second cross member, so that a space for accommodating wiring (for example, high-voltage wiring) and piping (for example, cooling piping for electronic devices, drive batteries, etc.) can be secured on the front side or the rear side of the electronic device. Further, in the above-described mounting structure, since the electronic device is supported not only by the support portion but also by either one of the first cross member and the second cross member, the support points of the electronic device can be dispersed. Therefore, according to the above-described mounting structure, the electronic device is firmly supported. Thus, according to the above-described mounting structure, stable running of the vehicle can be expected.

[0007] The above-described mounting structure can arrange the electronic device closer to either one side of the first cross member or the second cross member, so that a space for accommodating wiring (for example, high-voltage wiring) and piping (for example, cooling piping for electronic devices, drive batteries, etc.) can be secured on the front side or the rear side of the electronic device. Further, in the above-described mounting structure, since the electronic device is supported not only by the support portion but also by either one of the first cross member and the second cross member, the support points of the electronic device can be dispersed. Therefore, according to the above-described mounting structure, the electronic device is firmly supported. Thus, according to the above-described mounting structure, stable running of the vehicle can be expected.

[0008] (2) In the mounting structure of the present invention described above, the support portion is composed of a pair of support members arranged at a predetermined interval in the vehicle width direction, and at least one of the pair of support members has at least one external protrusion protruding in a direction away from the other support member. One of the first cross member and the second cross member on the side where the electronic device is mounted has at least one extension portion formed to extend in the extending direction of the side member, and at least a part of the electronic device is supported by the external protrusion and the extension portion. It is characterized by this.

[0009] Since the above-described mounting structure includes an external protrusion and an extension portion, the electronic device can be reliably supported according to the size of the electronic device. Therefore, even when there are restrictions on the installation interval between the first cross member and the second cross member, the electronic device can be mounted in a state where the electronic device is brought closer to either side of the first cross member and the second cross member.

[0010] (3) In the mounting structure of the present invention described above, the vehicle has a floor panel that forms the floor surface of the passenger compartment. A space is formed above the first cross member and the second cross member between the pair of side members by protruding the floor panel inward of the passenger compartment. The electronic device is housed in the space. The space has a first space portion located on the side opposite to the side where the electronic device is housed in the longitudinal direction of the vehicle, and a second space portion located on the side where the electronic device is housed in the longitudinal direction of the vehicle. It is characterized in that either one or both of wiring and cooling pipes are housed in the first space portion.

[0011] In the above-described mounting structure, an electronic device is housed in the space formed in the floor panel, and the electronic device is housed in the second space portion in the space portion. That is, in the above-described mounting structure, by housing the electronic device on the second space portion side, space can be secured in the first space portion adjacent to the second space portion in the longitudinal direction of the vehicle. Thereby, the above-described mounting structure can house wiring (for example, high-voltage wiring) and piping (for example, cooling piping) in the first space portion.

[0012] (4) It is preferable that the mounting structure of the present invention described above is characterized in that either one or both of the wiring and piping housed in the first space portion are fixed to one of the first cross member and the second cross member located on the side of the first space portion.

[0013] By adopting such a configuration, the above-described mounting structure can bring either one of the first cross member and the second cross member located on the side of the first space portion closer to the wiring and piping housed in the first space portion. Therefore, the above-described mounting structure can fix the wiring and piping to either one of the first cross member and the second cross member located on the side of the first space portion.

[0014] (5) In the mounting structure of the present invention described above, it is preferable that either one of the first cross member and the second cross member on the side where the electronic device is mounted has a larger cross-sectional area than the other.

[0015] By adopting such a configuration, the above-described mounting structure can increase the strength of the cross member on the side where the electronic device is mounted. As a result, since the electronic device is firmly supported, improvement in the running stability of the vehicle can be expected. Further, by adopting the above-described configuration, the above-described mounting structure can arrange the electronic device with a low center of gravity. Therefore, according to the above-described mounting structure, for example, improvement in the riding comfort when the vehicle travels on a rough road such as a wavy road can be expected.

[0016] (6) The mounting structure of the present invention described above is characterized in that the electronic device is mounted across the support portion and the second cross member.

[0017] With such a configuration, the mounting structure described above can arrange the electronic device closer to the second cross member side. That is, the mounting structure described above can arrange the electronic device closer to the vicinity of the center of the vehicle. Thereby, the running stability of the vehicle can be expected for the mounting structure described above.

[0018] (7) The mounting structure of the present invention described above is characterized in that the electronic device is composed of any one or a combination of a plurality of ESU, PCU, or ECU.

[0019] With such a configuration, the mounting structure described above can efficiently accommodate electronic devices such as ESU, PCU, and ECU, as well as wirings and pipes. Therefore, according to the mounting structure described above, for example, a storage space for a drive battery or the like can be secured, and the compression of the space in the vehicle interior can also be reduced.

Effect of the Invention

[0020] According to the present invention, by efficiently arranging the electronic device, it is possible to provide a mounting structure capable of securing a space for accommodating wirings, pipes, etc.

Brief Description of the Drawings

[0021]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Mode for Carrying Out the Invention

[0022] Hereinafter, with reference to the accompanying drawings, the details of the mounting structure 1 according to an embodiment of the present invention will be described. These drawings are schematic diagrams and are not necessarily drawn to an accurate scale. In the drawings, the same components are denoted by the same reference numerals. In this embodiment, the mounting structure 1 in the case of mounting the electronic device 40 on an electric vehicle will be described as an example.

[0023] As shown in FIG. 1, a vehicle 2 adopting the mounting structure 1 is one that transmits the rotational power generated by electric power to drive wheels 2A, 2A and travels. In this embodiment, the vehicle 2 is equipped with a motor 3 (also referred to as a drive unit 3) as a driving source for traveling, and transmits the rotational power generated by supplying electric power to the motor 3 to the drive wheels 2A, 2A which are the rear wheels to travel. Here, for the vehicle 2, for example, a cab-over type electric vehicle or a hybrid vehicle can be used.

[0024] The vehicle 2 is provided with a pair of side members 5L, 5R at the lower part of the vehicle body 4. The side members 5L, 5R are symmetrically configured and are provided so as to be spaced apart from each other in the vehicle width direction (left-right direction) and extend in the front-rear direction respectively. The side members 5L, 5R are arranged substantially parallel to both sides in the longitudinal direction, but are bent at the intermediate portion and are made to approach each other as they go toward the front side of the vehicle. The side members 5L, 5R are formed of, for example, a metal such as iron or a fiber-reinforced resin such as CFRP as a material.

[0025] As shown in FIG. 2, a floor panel 13 that forms the floor surface of the passenger compartment 7 is provided on side members 5L and 5R (in FIG. 2, one side member 5R is omitted). The floor panel 13 is arranged so as to straddle the side members 5L and 5R. The floor panel 13 is fixed, for example, by being joined to the upper surfaces of the side members 5L and 5R by welding. The passenger compartment 7 is provided above the floor panel 13. At the front end of the passenger compartment 7, a front seat 8 composed of a driver's seat and a passenger seat arranged side by side in the vehicle width direction is disposed. The floor panel 13 is formed so as to extend at least from under the feet of the front seat 8 to the rear end of the passenger compartment 7. Further, in the floor panel 13, a space portion 14 that protrudes upward is formed below the front seat 8. That is, the space portion 14 is formed to protrude above the side members 5L and 5R. In the present embodiment, the space portion 14 is formed above an intermediate region 11 described later. Details of the space portion 14 will be described later.

[0026] As shown in FIG. 1, the region formed between the side members 5L and 5R can be roughly classified into three regions: a rear region 10, an intermediate region 11, and a front region 12. The rear region 10 is a region formed in a portion where the side members 5L and 5R are arranged substantially parallel to each other with a predetermined interval on the rear side of the vehicle 2. The rear region 10 is a substantially rectangular region.

[0027] The drive battery 6 is disposed across the rear side region 10 to the intermediate region 11. The drive battery 6 is formed by arranging a large number of battery cells 6a in a single row in the vertical direction and arranging a large number of them in the horizontal direction (in the vehicle width direction and the vehicle longitudinal direction in this embodiment). The drive battery 6 is disposed across the substantially rectangular rear side region 10 formed between the side members 5L and 5R on the vehicle rear side to the front end side of the intermediate region 11. Therefore, the drive battery 6 also has a height (thickness) sufficient to accommodate the battery cells 6a and has a substantially rectangular outer shape. Accordingly, the drive battery 6 mounted on the vehicle 2 arranges the battery cells 6a with almost no dead space inside, and is thin and has a high capacity. Further, in the rear side region 10, a motor 3, a transaxle (not shown), etc. are mounted. Details of the motor 3 and the transaxle are omitted.

[0028] Further, the intermediate region 11 is a region formed between the side members 5L and 5R at the intermediate portions of the side members 5L and 5R. The intermediate region 11 is formed in a portion where the side members 5L and 5R are inclined so that the distance therebetween becomes narrower than that in the rear side region 10 toward the front side. Therefore, unlike the rear side region 10, the intermediate region 11 is a substantially trapezoidal region. An electronic device 40 described later is mounted in the intermediate region 11. Further, in the intermediate region 11, a first cross member 20F located on the vehicle front side and a second cross member 20R located on the vehicle rear side with a predetermined interval from the first cross member 20F are provided. Note that the first cross member 20F may also be simply referred to as the cross member 20F, and the second cross member 20R may also be simply referred to as the cross member 20R. Further, when there is no particular need to distinguish, the first cross member 20F and the second cross member 20R may both be referred to as the cross member 20. The drive battery 6 is disposed below the cross members 20F and 20R.

[0029] The front-side region 12 is a region formed in a portion where the side members 5R and 5L are arranged substantially in parallel on the front side of the vehicle 2 with respect to the middle region 11. The front-side region 12 has a substantially rectangular shape similar to the rear-side region 10, but since the interval between the side members 5L and 5R is narrower than that in the rear-side region 10, it is a region smaller in the vehicle width direction than the rear-side region 10.

[0030] As shown in FIG. 3, the cross members 20F and 20R are each formed as a hollow square prism. In other words, the cross members 20F and 20R have a cross section (hereinafter also referred to as a vehicle width direction cross section) that is rectangular when viewed in cross section from the vehicle width direction, and the interior is formed to be hollow. Although details will be described later, in the present embodiment, the cross-sectional area of the second cross member 20R located on the rear side of the vehicle is made larger than the cross-sectional area of the first cross member 20F in the vehicle width direction cross section (see FIGS. 2 and 7).

[0031] The cross members 20F and 20R are formed using, for example, a material such as metal like iron or fiber reinforced resin like CFRP. The cross members 20F and 20R are formed to extend in the vehicle width direction and are bridged in a direction intersecting the side members 5L and 5R. Further, in the present embodiment, an extension portion 21 for supporting an electronic device 40 described later is provided on the cross member 20R. Details of the extension portion 21 will be described later. Also, as shown in FIGS. 5 and 6, a support portion 25 is provided between the first cross member 20F and the second cross member 20R. Further, connection members 30 are provided on both sides in the vehicle width direction of the first cross member 20F and the second cross member 20R. Although details will be described later, the first cross member 20F and the second cross member 20R are connected to the side members 5L and 5R via the connection members 30.

[0032] The support portion 25 is composed of a pair of support members 26, 26 arranged at a predetermined interval from each other in the vehicle width direction.

[0033] The support members 26, 26 are formed of a metal such as iron or a fiber-reinforced resin such as CFRP. The support members 26, 26 are spanned in a direction (the longitudinal direction of the vehicle 2) intersecting the first cross member 20F and the second cross member 20R, and integrally support the first cross member 20F and the second cross member 20R. In other words, the support members 26, 26 are disposed across between the first cross member 20F and the second cross member 20R.

[0034] As shown in FIG. 5, an electronic device 40 is mounted on the support members 26, 26 and the cross member 20R. That is, the electronic device 40 is mounted across the second cross member 20R and the support members 26, 26.

[0035] Here, as the electronic device 40, in the present embodiment, for example, an Electric Supply Unit (also referred to as ESU) is mounted. The ESU is assumed to be responsible for the charging function and the power conversion function in the vehicle 2. Instead of the ESU, or together with the ESU, various devices such as an Electronic Control Unit (ECU) and a Power Control Unit (PCU) can be adopted for the electronic device 40.

[0036] Also, as shown in FIGS. 5 and 6, the pair of support members 26, 26 includes at least one external protrusion 27 that protrudes in a direction away from the other support member 26. In the present embodiment, one external protrusion 27 is provided on the right support member 26, and two external protrusions 27 are provided on the left support member 26. The external protrusion 27 is assumed to support at least a part of the bottom surface of the electronic device 40.

[0037] In addition, an extension part 21 is provided on the cross member 20R on the side where the electronic device 40 is mounted. The extension part 21 is formed so as to extend (project) in the extending direction of the side members 5L and 5R (the vehicle longitudinal direction). The extension part 21 is supposed to support a part of the bottom surface of the electronic device 40. Therefore, the electronic device 40 is supported by the cross member 20R, the support members 26, 26, the external protrusion 27, and the extension part 21.

[0038] Also, as described above, in the mounting structure 1 in the present embodiment, a structure is adopted in which the electronic device 40, which is a relatively heavy object, is mounted on the side of the second cross member 20R having a larger cross-sectional area in the vehicle width direction cross-section than the first cross member 20F. Therefore, the above-described mounting structure 1 can enhance the strength of the cross member 20 (the second cross member 20R in the present embodiment) on the side where the electronic device 40 is mounted. As a result, since the electronic device 40 is firmly supported, improvement in the running stability of the vehicle 2 can be expected. Further, the above-described mounting structure 1 can position the center of gravity of the second cross member 20R below that of the first cross member 20F by making the heights on the upper surface sides of the second cross member 20R and the first cross member 20F the same height. Thereby, the above-described mounting structure 1 can arrange the electronic device 40 with a low center of gravity. Therefore, according to the above-described mounting structure 1, for example, improvement in the riding comfort when the vehicle 2 travels on a bad road such as a wavy road can be expected.

[0039] Here, as shown in FIG. 2, the electronic device 40 is supposed to be housed inside the space part 14. The space part 14 is formed above between the pair of side members 5L and 5R and between the first cross member 20F and the second cross member 20R. The space part 14 is formed by protruding the floor panel 13 in the direction of the inside of the passenger compartment 7. The space part 14 has a first space part 14A and a second space part 14B. Note that the first space part 14A and the second space part 14B are obtained by dividing the space part 14 for convenience and are spaces adjacent to each other.

[0040] The second space portion 14B is located on the side where the electronic device 40 is accommodated in the longitudinal direction of the vehicle 2. The electronic device 40 is accommodated in the second space portion 14B. Therefore, the second space portion 14B is filled with the electronic device 40, and there is little space for accommodating other members (such as wiring 41 and piping 42).

[0041] The first space portion 14A is located on the side opposite to the side where the electronic device 40 is accommodated in the longitudinal direction of the vehicle 2. That is, the first space portion 14A is located adjacent to the second space portion 14B closer to the front side of the vehicle in the space portion 14. Therefore, an accommodation space for accommodating various members is formed in the first space portion 14A on the front side of the electronic device 40. Accordingly, the first space portion 14A can accommodate, for example, the wiring 41 and the piping 42. Here, examples of the wiring 41 include high-voltage wiring connected to the electronic device 40 and the drive battery 6, and examples of the piping 42 include cooling piping for cooling the electronic device 40, the drive battery 6, and the like.

[0042] As described above, in the mounting structure 1 described above, the electronic device 40 is accommodated in the space portion 14 formed in the floor panel 13, and the electronic device 40 is accommodated in the second space portion 14B in the space portion 14. That is, in the mounting structure 1 described above, by accommodating the electronic device 40 on the second space portion 14B side, space can be secured in the first space portion 14A. Thereby, the mounting structure 1 described above can accommodate the wiring 41 and the piping 42 in the first space portion 14A.

[0043] Further, the mounting structure 1 described above can bring the wiring 41 and the piping 42 close to the first cross member 20F located on the first space portion 14A side by accommodating the wiring 41 and the piping 42 in the space of the first space portion 14A. Therefore, the mounting structure 1 described above can fix the wiring 41 and the piping 42 to the first cross member 20F located on the side of the first space portion 14A.

[0044] In addition, since the electronic device 40 can be configured by any one or a combination of a plurality of an ESU, a PCU, or an ECU, these electronic devices 40, wirings, pipes, etc. can be efficiently accommodated. Therefore, according to the mounting structure 1 described above, for example, a storage space for the drive battery 6 etc. can be secured, and the compression of the space in the passenger compartment 7 can also be reduced.

[0045] The above is the configuration of the mounting structure 1 according to an embodiment of the present invention. Next, the details of the connection (attachment) of the first cross member 20F and the second cross member 20R to the side members 5L and 5R will be described.

[0046] As shown in FIGS. 3 and 4, connection members 30 (also referred to as brackets 30) are provided on both sides in the vehicle width direction of the cross members 20F and 20R. The bracket 30 is configured to connect the side members 5L and 5R and the cross members 20F and 20R to each other. In other words, the cross members 20F and 20R are attached to the side members 5L and 5R via the brackets 30, respectively. Further, the bracket 30 is formed so as to be detachable from the cross members 20F and 20R and the side members 5L and 5R.

[0047] As shown in FIGS. 7(a) and 7(b), the bracket 30 has first connection portions 31F and 31R for connecting to the cross members 20F and 20R, respectively, and second connection portions 35F and 35R bent with respect to the first connection portions 31F and 31R. The bracket 30 is formed of, for example, a metal such as iron or a fiber-reinforced resin such as CFRP as a material. In the present embodiment, the first connection portions 31F and 31R are formed separately from the second connection portions 35F and 35R. For the sake of convenience of explanation, when there is no need to distinguish between the first connection portion 31F attached to the first cross member 20F and the first connection portion 31R attached to the second cross member 20R, the first connection portions 31F and 31R will be described as the first connection portion 31, respectively. Also, when there is no need to distinguish between the second connection portions 35F and 35R, they will be described as the second connection portion 35, respectively.

[0048] The first connection part 31 is provided on both sides in the vehicle width direction of the cross member 20. The first connection part 31 has first connection part side flanges 32 that protrude on both sides along the width direction (vehicle front-rear direction) when the cross members 20F and 20R are viewed in cross section from the vehicle width direction. The first connection part 31 and the second connection part 35 are integrated by joining the first connection part side flange 32 and a second connection part side flange 36 described later. Further, the first connection part 31 is located above the vehicle 2 compared to the second connection part 35.

[0049] The first connection part 31 (bracket 30) has a covering part 33 that covers at least the upper surface side of the cross member 20 on both sides in the vehicle width direction of the cross member 20.

[0050] In this embodiment, the covering part 33 is formed so as to cover at least the upper surface and both side surfaces of the cross member 20 along the shape of the cross section when the cross member 20 is viewed in cross section from the vehicle width direction. The covering part 33 is formed so as to follow the upper surface side of the cross member 20. In other words, the covering part 33 is formed to protrude in the vertical direction, and the inner surface side is formed in a shape that follows the upper surface side of the cross member 20. That is, the covering part 33 is configured to be in close contact with the cross member 20. The covering part 33 is also supposed to function as a reinforcing member.

[0051] The first connection part 31 can be fixed to both ends of the cross member 20 by fastening the first connection part side flange 32 to the cross member 20 with bolts or the like in a state where the covering part 33 covers both ends of the cross member 20. In this embodiment, the first connection part side flange 32 is fastened to the cross member 20 via the second connection part side flange 36.

[0052] Also, in the present embodiment, as shown in FIG. 3, one of the support portions 55 for supporting the electronic device 40 or the like is erected on the covering portion 33 that covers one end side (left side) of the second cross member 20R. The support portion 55 is attached to the covering portion 33 by welding or the like. Further, the other support portion 55 is erected on the second cross member 20R. A holding portion 50 (see FIGS. 3 and 4) is provided on both support portions 55, 55. The holding portion 50 can mount, for example, an electronic control unit (also referred to as an ECU, not shown) on its upper and lower surfaces.

[0053] As shown in FIG. 7(b), the second connection portion 35 has a bottom surface covering portion 38 formed along the bottom surface of the cross member 20, and a second connection portion side flange 36 or the like that is continuous with the bottom surface covering portion 38 and is formed along the first connection portion side flange 32.

[0054] Also, the second connection portion 35F connected to (attached to) the first cross member 20F is formed to extend downward from the bottom surface covering portion 38. In other words, the second connection portion 35F is formed by bending the bottom surface covering portion 38 downward. Further, the lower end portion of the second connection portion 35F is bent in an L shape. The second connection portion 35F can place the side members 5L, 5R on the horizontal plane of the lower end portion. The second connection portions 35F, 35F on both sides can be fixed to the side members 5L, 5R by fastening bolts or the like from the lower side of the horizontal plane in a state where the side members 5L, 5R (see FIG. 3) are respectively placed on the horizontal planes on both sides. Thereby, the side members 5L, 5R are supported by the brackets 30, 30. Also, the second connection portion 35F is supposed to be in close contact with the side members 5L, 5R.

[0055] As shown in Fig. 7(a), the second connection part 35R connected to (attached to) the second cross member 20R is formed to extend downward along the side surfaces of the side members 5L and 5R. In other words, the second connection part 35R is formed by bending the bottom surface covering part 38 downward. Also, the second connection part 35R can be in close contact with the side surfaces of the side members 5L and 5R. The second connection parts 35R on both sides are fixed to the side members 5L and 5R by fastening bolts or the like from the side surface side in a state of being in close contact with the side surfaces of the side members 5L and 5R. Thereby, the side members 5L and 5R are supported by the brackets 30, 30.

[0056] Further, in the present embodiment, the second connection part 35R has a first raised part 37 that protrudes to the opposite side of the side members 5L and 5R. In this way, since the second connection part 35R of the vehicle 2 described above has the first raised part 37, the bending strength of the second connection part 35R can be increased. Thereby, the vehicle 2 described above can surely support the side members 5L and 5R. Therefore, the vehicle 2 described above can suppress the side members 5L and 5R from deforming inward in the vehicle width direction when receiving a collision from the side (hereinafter also referred to as a side impact). Also, the vehicle 2 described above can suppress damage to components such as the drive battery 6 and the electronic device 40 arranged between the side members 5L and 5R, for example.

[0057] Further, in the present embodiment, the bottom surface covering part 38 of the second connection part 35R has a second raised part 39 that protrudes to the opposite side of the bottom surface of the cross member 20R. Therefore, the vehicle 2 described above can increase the bending strength of the bottom surface covering part 38. Thereby, since the vehicle 2 described above can increase the bending strength of the cross member 20R, it can suppress the side members 5L and 5R from deforming inward in the vehicle width direction during a side impact. Therefore, the vehicle 2 described above can suppress damage to components such as the drive battery 6 and the electronic device 40 arranged between the side members 5L and 5R, for example.

[0058] Here, when the cross member 20 is viewed in cross section from the vehicle width direction, the cross member 20 is arranged in a direction intersecting the side members 5L and 5R such that the cross section of the second connection portion 35 faces the side surfaces of the side members 5L and 5R indirectly via the bracket 30 (see FIG. 3). That is, the cross sections at both ends of the cross member 20 are arranged to face the inner surfaces of the side members 5L and 5R.

[0059] Therefore, the above-described mounting structure 1 can surely function as a brace for the side members 5L and 5R by the cross member 20 during a side impact. As a result, the above-described mounting structure 1 can suppress the deformation of the side members 5L and 5R inward in the vehicle width direction during a side impact. Further, in the above-described mounting structure 1, since the cross-sectional area of the cross member 20 (the second cross member 20R in this embodiment) on the side where the electronic device 40 is mounted is formed large, the deformation of the side members 5L and 5R in the vehicle width direction during a side impact can be effectively suppressed. Therefore, the above-described mounting structure 1 can suppress damage to the electronic device 40.

[0060] The above is the detail of the connection of the first cross member 20F and the second cross member 20R constituting the mounting structure 1 according to an embodiment of the present invention to the side members 5L and 5R. Next, the operation and effect of the mounting structure 1 according to the present invention will be described.

[0061] In the above-described mounting structure 1, since the electronic device 40 can be arranged close to either one side of the first cross member 20F or the second cross member 20R, a space for accommodating the wiring 41 and the piping 42 can be secured on the front side or the rear side of the electronic device 40. Further, in the above-described mounting structure 1, since the electronic device 40 is supported not only by the support portion 25 but also by either one of the first cross member 20F or the second cross member 20R, the support points of the electronic device 40 can be dispersed. Therefore, according to the above-described mounting structure 1, the electronic device 40 is firmly supported. Therefore, according to the above-described mounting structure 1, stable running of the vehicle 2 can be expected.

[0062] In addition, since the above-described mounting structure 1 includes the external protrusion 27 and the extension portion 21, the electronic device 40 can be reliably supported according to the size of the electronic device 40. Therefore, even when there are restrictions on the installation interval between the first cross member 20F and the second cross member 20R, the mounting structure 1 described above can mount the electronic device 40 with the electronic device 40 shifted to either side of the first cross member 20F and the second cross member 20R.

[0063] In addition, in the above-described mounting structure 1, the electronic device 40 is mounted across the support portion 25 and the second cross member 20R. That is, in the above-described mounting structure 1, the electronic device 40 is mounted across the support portion 25 and the second cross member 20R disposed closer to the rear side of the vehicle.

[0064] Therefore, the above-described mounting structure 1 can arrange the electronic device 40 closer to the second cross member 20R side. That is, the above-described mounting structure 1 can arrange the electronic device 40 closer to the vicinity of the center of the vehicle 2. Thereby, the above-described mounting structure 1 can expect the running stability of the vehicle 2.

[0065] The above is the configuration and the operation and effect of the mounting structure 1 according to an embodiment of the present invention. However, the mounting structure 1 of the present invention is not limited to the above-described embodiment, and various modifications can be made.

[0066] In the present embodiment, an electric vehicle is exemplified as the vehicle 2 that employs the mounting structure 1. However, the vehicle 2 that can be used in the present invention is not limited to this, and can be used in various vehicles (hybrid vehicles, engine vehicles, etc.). Further, the shapes, sizes, and arrangements of the side members 5L and 5R and the cross members 20F and 20R in the mounting structure 1 can be various according to the form of the vehicle 2. In the present embodiment, it is composed of two cross members 20, namely, the first cross member 20F and the second cross member 20R. However, the number of cross members 20 provided can be various numbers from a single one to a plurality of ones.

[0067] In addition, in the present embodiment, the cross members 20F and 20R are connected to the side members 5L and 5R via the connecting member 30. However, the mounting structure 1 of the present invention is not limited to this. For example, the cross members 20F and 20R may be directly connected to the side members 5L and 5R. Also, various materials such as metals and fiber-reinforced resins can be used as the materials for forming the side members 5L and 5R and the cross members 20.

[0068] In addition, in the present embodiment, the support portion 25 is constituted by two support members 26 and 26. However, the support portion 25 may be constituted by a single support member 26 or three or more support members 26. Also, various shapes can be used for the shape of the support portion 25 (support member 26).

[0069] In addition, in the present embodiment, the external protrusion 27 is provided on the support member 26. However, the external protrusion 27 may be provided as necessary, and a configuration without the external protrusion 27 can also be adopted. Also, the external protrusion 27 can be arranged at various positions of the support member 26 according to the size and shape of the electronic device 40 to be mounted, and various shapes and sizes can be used for the size and shape of the external protrusion 27. Also, in the present embodiment, three external protrusions 27 are provided. However, the number of the external protrusions 27 is not limited to three, and they can be provided in various numbers. Also, in the present embodiment, at least one of the pair of support members 26 is provided with an external protrusion 27 that protrudes in a direction away from the other support member 26. However, the protruding direction of the external protrusion 27 is not limited to this. For example, the external protrusion 27 provided on one side support member 26 may protrude in a direction approaching the other side support member 26.

[0070] In addition, in this embodiment, the extension part 21 is provided on the second cross member 20R. However, the extension part 21 may be provided as necessary, and a configuration in which the extension part 21 is not provided is also possible. Further, the extension part 21 may be provided on either the first cross member 20F or the second cross member 20R on the side where the electronic device 40 is mounted. Further, the extension part 21 can be arranged at various positions according to the size and shape of the electronic device 40, and various shapes and sizes of the extension part 21 can also be used. Further, the extension part 21 can be provided in various numbers. Further, either the external protrusion part 27 or the extension part 21 may be provided alone.

[0071] In addition, in this embodiment, the space part 14 is formed in the floor panel 13. However, the space part 14 may be provided as necessary, and a configuration in which the space part 14 is not formed is also possible. In such a case, the electronic device 40 may be mounted using the space between the lower surface side of the floor panel 13 and the cross member 20. In addition, in this embodiment, the electronic device 40 is accommodated on the second space part 14B side (the second cross member 20R side). However, the electronic device 40 may be accommodated on the first space part 14A side (the first cross member 20F side). In such a case, the electronic device 40 is preferably arranged across the first cross member 20F and the support part 25. That is, the electronic device 40 is preferably arranged closer to the first cross member 20F on the front side. In such a case, the wiring 41 and the piping 42 are preferably accommodated in the space formed in the second space part 14B, and the wiring 41 and the piping 42 are fixed to the first cross member 20F.

[0072] In addition, in this embodiment, both the wiring 41 and the piping 42 are accommodated in the first space part 14A. However, only either the wiring 41 or the piping 42 may be accommodated in the first space part 14A. Further, the wiring 41 and the piping 42 may be fixed to the cross member 20 as necessary, and a configuration in which the wiring 41 and the piping 42 are not fixed to the cross member 20 is also possible. Further, when the wiring 41 and the piping 42 are fixed to the cross member 20, the wiring 41 and the piping 42 may be indirectly fixed to the cross member 20 via a separate bracket or the like.

[0073] Further, in the present embodiment, the second cross member 20R on the side where the electronic device 40 is mounted is formed to have a larger cross-sectional area (cross-sectional area in the vehicle width direction cross-section) than the other first cross member 20F. However, the mounting structure 1 of the present invention is not limited to this. For example, the cross-sectional areas of the first cross member 20F and the second cross member 20R may be the same, or the cross member 20 on the side where the electronic device 40 is mounted may have a smaller cross-sectional area than the other cross member 20. Further, in the present embodiment, the shape of the cross-section when the cross member 20 is viewed in cross-section from the vehicle width direction is rectangular, but the shape of the cross-section of the cross member 20 is not limited to a rectangular shape, and various shapes can be used. For example, the shape of the cross-section of the cross member 20 may be a triangular shape, a circular shape, an elliptical shape, a polygonal shape with four or more sides, or the like.

[0074] Further, in the present embodiment, the case where the mounted electronic device 40 is an ESU is exemplified, but the electronic device 40 can adopt various types such as a PCU or an ECU. Further, the electronic device 40 is not limited to a single one, and may be configured by a plurality of combinations.

[0075] The above are various embodiments and modifications of the mounting structure according to the present invention. However, the present invention is not limited to those exemplified in the above-described embodiments and modifications, and it will be easily understood by those skilled in the art that there may be other embodiments within the scope not departing from the teachings and spirit of the claims.

Industrial Applicability

[0076] The mounting structure of the present invention can be used for mounting electronic devices on various vehicles such as electric vehicles, hybrid vehicles, and engine vehicles. Further, the mounting structure of the present invention can be preferably used for vehicles such as cab-over type electric vehicles and hybrid vehicles.

Explanation of Reference Numerals

[0077] 1: Mounting structure 2: Vehicle 5L: Side member 5R: Side member 7 : Passenger compartment 13 : Floor panel 14 : Space part 14A: First space part 14B: Second space part 20 : Cross member 20F: Cross member 20R: Cross member 21 : Extension part 25 : Support part 26 : Support member 27 : External protrusion 30 : Bracket (connecting member) 40 : Electronic equipment

Claims

1. A mounting structure for mounting an electronic device on a vehicle, a pair of side members extending in the longitudinal direction of the vehicle and arranged at a predetermined interval in the vehicle width direction; a first cross member arranged in a direction intersecting the pair of side members; a second cross member arranged in a direction intersecting the pair of side members and arranged at a predetermined interval on the rear side of the vehicle with respect to the first cross member; a support portion arranged across the first cross member and the second cross member; having the electronic device is mounted across either one of the first cross member and the second cross member and the support portion; the support portion is composed of a pair of support members arranged at a predetermined interval in the vehicle width direction with respect to each other, at least one of the pair of support members is provided with at least one external protrusion protruding in a direction away from the other support member; one of the first cross member and the second cross member on the side where the electronic device is mounted is provided with at least one extension portion formed to extend in the extending direction of the side member; at least a part of the electronic device is supported by the external protrusion and the extension portion, characterized by the mounting structure.

2. the vehicle has a floor panel forming a floor surface of a passenger compartment, a space portion is formed by protruding the floor panel inward of the passenger compartment above the space between the pair of side members and between the first cross member and the second cross member, the electronic device is accommodated in the space portion, the space portion is a first space portion located on the side opposite to the side where the electronic device is accommodated in the longitudinal direction of the vehicle; In the longitudinal direction of the vehicle, a second space portion located on the side where the electronic device is accommodated, and having, wherein either one or both of wiring and piping are accommodated in the first space portion, the mounting structure according to claim 1, characterized in that.

3. Either one or both of the wiring and piping accommodated in the first space portion are fixed to one of the first cross member and the second cross member located on the side of the first space portion, the mounting structure according to claim 2, characterized in that.

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