Vehicle undercarriage

Abstract

To accomplish a vehicular lower section structure that ensures a space at the lower part of a vehicle without deteriorating the performance of the vehicle and the merchantability thereof.SOLUTION: A vehicular lower section structure includes: a floor tunnel 10; reinforcement members 12 (12a and 12b) which are attached inside the floor tunnel 10, and which reinforce the floor tunnel 10; and a clamp 14 that bundles wires or pipes inside the floor tunnel 10. The reinforcement member 12b includes: attachment portions 22 and 24 that have respective both ends attached to the right and left internal surface portion of the floor tunnel 10, respectively, in the vehicle widthwise direction; and a dividing portion 26 that is a middle portion of such a member which divides the internal space of the floor tunnel 10 to the upper and lower spaces. The clamp 14 includes: a clamp attachment portion 28 that attaches the clamp 14 to the reinforcement member 12b in the internal space of the floor tunnel 10 divided by the dividing portion 26; and a clamp main body portion 30 that includes an insertion portion 32 which bundles the wires or the pipes.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a vehicle underbody structure.

Background Art

[0002] In electric vehicles such as battery electric vehicles (BEVs) and plug-in hybrid vehicles (PHEVs), since it is required to ensure a sufficient cruising range, a space for arranging a large-capacity battery is needed under the vehicle.

[0003] Patent Document 1 discloses a structure of a fuel cell vehicle (FCEV) for improving problems associated with the arrangement of a compressor. Patent Document 1 further discloses a configuration in which piping and harnesses are arranged in a floor tunnel and a configuration for securing a space under the vehicle.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] [[ID=ID=38]] By the way, in order to secure a space for arranging a battery under the vehicle, for example, a countermeasure such as removing a strength member can be considered. However, in this case, a problem may occur that the performance of the vehicle cannot be ensured. On the other hand, in order to avoid omitting parts under the vehicle, a countermeasure of securing a space under the vehicle by narrowing the interior space can also be considered. However, in this case, the comfort in the vehicle interior may be impaired and the value as a product may decrease.

[0006] Furthermore, electric vehicles have more types and numbers of wires and pipes than conventional gasoline vehicles, requiring ingenuity in the routing of these wires and pipes. Thus, electric vehicles, in particular, are prone to the problem of insufficient space under the vehicle.

[0007] Therefore, this specification discloses a vehicle understructure that secures space beneath the vehicle without impairing the vehicle's performance or marketability. [Means for solving the problem]

[0008] The vehicle understructure disclosed herein comprises a floor tunnel provided in the approximate center of the vehicle width direction on the underside of the vehicle and extending in the longitudinal direction of the vehicle; a reinforcing member attached to the inside of the floor tunnel and reinforcing the floor tunnel; and a clamp located inside the floor tunnel for bundling wiring or piping routed inside the floor tunnel, wherein the reinforcing member has mounting portions at both ends attached to the left and right inner surfaces of the floor tunnel, respectively, and a partition portion in the middle that divides the space inside the floor tunnel vertically, and the clamp has a clamp mounting portion for attaching the clamp to the reinforcing member in the space inside the floor tunnel partitioned by the partition portion, and a clamp body portion having an insertion portion for bundling the wiring or piping. [Effects of the Invention]

[0009] According to the vehicle understructure disclosed herein, a clamp having an insertion portion for bundling wiring or piping is attached to a reinforcing member in the space inside the floor tunnel partitioned by a partition. By bundling the wiring or piping with the insertion portion of the clamp in this way, the movement of the wiring or piping amongst themselves is suppressed. Furthermore, by attaching the clamp to a reinforcing member that also functions as a partition plate, the wiring design becomes easier, and the limited space within the floor tunnel can be used effectively. [Brief explanation of the drawing]

[0010] [Figure 1]This is a schematic front view showing the undercarriage of the vehicle. [Figure 2] Figure 1 is a perspective view. [Modes for carrying out the invention]

[0011] The vehicle's understructure will be described below with reference to the diagrams. In each diagram, "Fr," "Up," and "W" indicate the front, top, and width directions of the vehicle, respectively. The left and right directions in the width direction refer to the left and right when viewed from the front of the vehicle.

[0012] Figure 1 is a schematic front view of the vehicle understructure. Figure 2 is a perspective view of Figure 1. More specifically, Figure 2 shows the inside of the floor tunnel, which is part of the vehicle understructure, as viewed from below the vehicle. As shown in Figure 1, the vehicle understructure comprises a floor tunnel 10, reinforcing members 12, and clamps 14, 16, 18, and 20. In the vehicle understructure, a battery pack is positioned below the floor panel (not shown) and the floor tunnel 10. Details of the battery pack are omitted here, but the vehicle understructure disclosed herein is configured to accommodate cases where space for a large-capacity battery is required below the vehicle. Therefore, in Figures 1 and 2, the arrangement of the battery pack is schematically shown by dashed lines. Also, in Figure 1, the cross-sectional shape of the floor tunnel 10 is shown.

[0013] The floor tunnel 10 is provided on the floor surface of the vehicle so as to rise upward in approximately the center in the width direction of the vehicle, and is formed to extend in the longitudinal direction of the vehicle. As shown in Figures 1 and 2, the vehicle understructure disclosed herein relates to the internal structure of the floor tunnel 10.

[0014] The reinforcing member 12 is a member that reinforces the floor tunnel 10 from the inside, and is composed of a main body portion 12a and an intermediate portion 12b located inside it. The main body portion 12a is a reinforcing portion with a hat-shaped cross-section when viewed from the front. The main body portion 12a is positioned along the inner wall surface of the floor tunnel 10 and supports the inside of the floor tunnel 10 from below in the vertical direction of the vehicle. The intermediate portion 12b is a reinforcing portion that is elongated and roughly rectangular when viewed from the front. Inside the floor tunnel 10, the intermediate portion 12b is attached to the inside of the floor tunnel 10 so as to bridge the left and right walls of the floor tunnel 10. This bridging-like configuration of the intermediate portion 12b makes it possible for the reinforcing member 12 to more effectively increase the strength inside the floor tunnel 10 than a reinforcing member composed only of the main body portion 12a. Although only one reinforcing member 12 is shown in Figures 1 and 2, for example, multiple reinforcing members 12 may be provided at equal intervals in the longitudinal direction of the vehicle inside the floor tunnel 10.

[0015] Next, the intermediate section 12b will be described in more detail. As shown in Figures 1 and 2, the intermediate section 12b comprises a right mounting section 22, a left mounting section 24, and a partition section 26. In the vehicle width direction, the right mounting section 22 constitutes the right end of the intermediate section 12b, and the left mounting section 24 constitutes the left end of the intermediate section 12b. The right mounting section 22 and the left mounting section 24 are members that are substantially elliptical in shape when viewed from the front, and have fastening holes 22a, 22b and fastening holes 24a, 24b, respectively. By inserting fasteners into the fastening holes 22a, 22b, the right mounting section 22 is attached to the right side of the main body section 12a. That is, the right mounting section 22 is attached to the right inner wall surface of the floor tunnel 10 via the main body section 12a. Also, by inserting fasteners into the fastening holes 24a, 24b, the left mounting section 24 is attached to the left side of the main body section 12a. In other words, the left mounting portion 24 is attached to the left inner wall surface of the floor tunnel 10 via the main body portion 12a. This fastening may be achieved using removable means such as bolting, or it may be done by welding.

[0016] The partition 26 constitutes the middle portion of the intermediate section 12b in the vehicle width direction. That is, the partition 26 is positioned to connect the right mounting section 22 and the left mounting section 24. As partially shown in Figure 2, the partition 26 is a roughly rectangular plate-shaped (long and narrow plate-shaped) member when viewed from below. By providing the partition 26 to bridge both the left and right walls of the floor tunnel 10, the space inside the floor tunnel 10 is divided vertically. In Figures 1 and 2, the upper space inside the floor tunnel 10 divided by the partition 26 is shown as space S1, and the lower space is shown as space S2.

[0017] Clamps 14, 16, 18, and 20 are components that bundle wiring and piping passing through the inside of the floor tunnel 10 and attach to the reinforcing member 12. In the following description of the clamps, we will refer to clamp 14. Clamp 14 comprises a clamp mounting portion 28 and a clamp body portion 30 and is provided in the space S2. The clamp mounting portion 28 is a component that is attached to the intermediate portion 12b of the reinforcing member 12 in the space inside the floor tunnel 10. More specifically, the clamp mounting portion 28 is attached below the partition portion 26 of the intermediate portion 12b. The clamp body portion 30 is substantially rectangular in front view, and an insertion portion 32 is formed so as to penetrate the clamp body portion 30 in the vehicle's longitudinal direction. The insertion portion 32 is circular in front view, and wiring and piping are passed through this circular portion. In particular, in electric vehicles, the types and number of wires and pipes increase, making it difficult to accommodate them within the limited space inside the floor tunnel 10. However, in the vehicle understructure disclosed herein, the wires and pipes are routed using the insertion sections 32. That is, the wires and pipes are bundled so that they fit into the insertion sections 32. As a result, the movement of wires and pipes among themselves is suppressed, and the wires and pipes can be accommodated within the limited space. Note that the clamp 14 shown in Figures 1 and 2 is provided with four insertion sections. However, this is merely an example, and the number and size of the insertion sections provided in the clamp, as well as their arrangement within the clamp body, can be changed depending on the type and characteristics of the wires and pipes that each clamp bundles.

[0018] As described above, in the vehicle understructure disclosed herein, an intermediate section 12b having a partition section 26 is used as part of the reinforcing member 12 to partition the space inside the floor tunnel 10 into an upper space S1 and a lower space S2. In addition, a clamp 14 having an insertion section 32 for bundling wiring and piping is provided to suppress the movement of wiring and piping passing through the inside of the floor tunnel 10. By attaching this clamp 14 to the partition section 26 which acts as a partition plate, the wiring design becomes easier and the limited space inside the floor tunnel 10 can be effectively utilized.

[0019] It should be noted that the above description is merely an example, and in the vehicle understructure disclosed herein, it is sufficient that a clamp having an insertion portion for bundling wiring or piping is attached to the reinforcing member in the space inside the floor tunnel partitioned by the partition portion, which is part of the reinforcing member. Therefore, the configuration of other parts of the vehicle understructure may be changed as appropriate. For example, in Figures 1 and 2, the clamp 14 has an insertion portion 32 provided in a clamp body portion 30 which is substantially rectangular in front view. A clamp mounting portion 28, like a handle, extends upward from the clamp body portion 30 and is attached to the partition portion 26. However, the configuration is not limited to this.

[0020] For example, the portion A surrounded by the dotted line in FIG. 1 is another example of a clamp. Here, the clamp shown in portion A is referred to as clamp 14A. Clamp 14A includes a clamp attachment portion 28A, a clamp main body portion 30A, and an insertion portion 32A. The clamp attachment portion 28A is formed to extend outward from both ends in the vehicle left-right direction on the upper surface of the clamp main body portion 30A toward the outside of the vehicle. The clamp attachment portion 28A has an insertion hole (not shown), and by using a fastener in the insertion hole, it is attached to the partition portion 26. Different from the circular shape of the insertion portion 32 shown in FIGS. 1 and 2, the insertion portion 32A is in a semi-arc shape. By arranging and bundling wirings or pipes in the semi-arc-shaped portion of the insertion portion 32A, similar to the clamp 14 shown in FIGS. 1 and 2, the clamp 14A can suppress the movement of the wirings or pipes relative to each other. Further, as yet another example instead of the clamp 14, for example, a band may be provided instead of the clamp, the wirings or pipes may be bundled with the band, and then the band may be attached to the partition portion of the reinforcing member.

Description of Reference Numerals

[0021] 10 Floor tunnel, 12 Reinforcing member, 12a Main body portion, 12b Intermediate portion, 14 - 20 Clamp, 22 Right attachment portion, 24 Left attachment portion, 26 Partition portion, 28 Clamp attachment portion, 30 Clamp main body portion, 32 Insertion portion.

Claims

1. A floor tunnel is located approximately in the center of the vehicle's width direction on the underside of the vehicle, and extends in the vehicle's longitudinal direction. A reinforcing member is attached to the inside of the floor tunnel and reinforces the floor tunnel, Inside the floor tunnel, a plurality of clamps for bundling wiring or piping routed inside the floor tunnel, Equipped with, The reinforcing member is, in the vehicle width direction, The main body portion, which has both ends in the vehicle width direction attached to the left and right inner surfaces of the floor tunnel and is shaped to conform to the inner wall surface of the floor tunnel when viewed from the front, Both ends in the vehicle width direction are attached to the main body, and the intermediate part divides the space inside the floor tunnel vertically, It has, Each of the aforementioned multiple clamps is, A clamp body having multiple insertion points for bundling the aforementioned wiring or piping, A clamp mounting portion for attaching the clamp body to the main body or intermediate portion, Having, A vehicle understructure characterized by the following features.

2. The vehicle understructure according to Claim 1, The clamp body of the clamp attached to the intermediate section is located in the space below the intermediate section, and the plurality of insertion portions of the clamp body are arranged in the vehicle width direction. The clamp body of the clamp attached to the main body is located in the space between the main body and the intermediate part. A vehicle understructure characterized by the following features.

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