Vehicle structure

The vehicle structure addresses the limitations in piping layout by using a lightweight protector fixed to a holding portion, allowing for flexible and efficient piping arrangements without increasing the protector's size or weight.

JP2025037323APending Publication Date: 2025-03-18NISSAN MOTOR CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Application Number
JP2023144179
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-09-06
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

Existing vehicle piping layouts face limitations due to the need for larger and heavier protectors when pipes are placed far from the side sill, restricting the degree of freedom in piping arrangement and increasing weight.

Method used

A vehicle structure with pipes arranged close to the floor and protected by a lightweight protector that is fixed to a holding portion, allowing for flexible piping layouts without increasing the size or weight of the protector.

Benefits of technology

This solution enhances the degree of freedom in piping layout while preventing the increase in size and weight of the protector, offering a more versatile and efficient vehicle piping system.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 2025037323000001_ABST
    Figure 2025037323000001_ABST
Patent Text Reader

Abstract

To provide a vehicle structure in which degree of freedom of a piping layout is high and enlargement and weight increase of a protector are prevented or suppressed.SOLUTION: A vehicle structure has a plurality of pipings P arranged on an underfloor of a vehicle, the plurality of pipings are closely arranged, and the plurality of pipings are provided with a protector 100 fixed by being attached to a holding part 30.SELECTED DRAWING: Figure 1
Need to check novelty before this filing date? Find Prior Art

Description

[Technical field]

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

[0002] Conventionally, pipes for fuel, brakes, etc. are arranged inside a vehicle to realize various functions of the vehicle. For example, Patent Document 1 describes a technique related to piping in which fuel and brake pipes are arranged below a floor panel, a pipe protector is arranged below the brake pipe, and the protector is bolted to the side sill. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 61-180840 Summary of the Invention [Problem to be solved by the invention]

[0004] The protector in Patent Document 1 is bolted to the side sill. Therefore, if the piping is arranged far from the side sill in order to prioritize the layout of the piping, the dimensions of the part of the protector that is fastened to the side sill will be large in order to fasten the protector to the side sill with the bolts, and the weight of the protector will be heavy due to the increase in dimensions. On the other hand, if it is attempted to prevent the dimensions of the part of the protector that is fastened to the side sill from becoming large, the position where the protector can be placed in the vehicle will be limited, and the degree of freedom in the piping layout will be reduced.

[0005] An object of the present invention is to provide a vehicle structure which allows a relatively high degree of freedom in piping layout and which prevents or suppresses increases in size and weight of a protector. [Means for solving the problem]

[0006] One aspect of the present invention is a vehicle structure having a plurality of pipes under the floor of a vehicle, the plurality of pipes being routed in close proximity to each other, and the plurality of pipes being provided with protectors that are fixed by being attached to a retaining portion. Effect of the Invention

[0007] According to the above vehicle structure, the degree of freedom in piping layout is relatively high, and an increase in size and weight of the protector can be prevented or suppressed. [Brief description of the drawings]

[0008] [Figure 1] 2 is a perspective view showing a state in which a pipe is attached to a holding portion of a protector that constitutes a vehicle structure according to an embodiment. FIG. [Diagram 2] FIG. 2 is a plan view of FIG. [Diagram 3] 2 is a perspective view showing a state in which a hole portion of the protector in FIG. 1 is viewed from below. FIG. [Figure 4] 2 is a bottom view showing the position of the protector in FIG. 1 relative to the entire vehicle. FIG. [Diagram 5] 2 is a front view showing the position of the protector in FIG. 1 relative to the entire vehicle. FIG. [Figure 6] FIG. 2 is a perspective view showing the protector shown in FIG. 1 alone. [Figure 7] FIG. 7 is a side view showing the protector of FIG. 6. [Figure 8] 2 is a front view showing a holding portion constituting the protector of FIG. 1. [Figure 9] 2 is a horizontal cross-sectional view of a pipe mounting position of a holding portion included in the protector shown in FIG. 1. [Figure 10] 1. FIG. 10 is a horizontal cross-sectional view of a pipe attachment position of a holding portion different from that in FIG. 9, which is included in the protector in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the attached drawings. In the drawings, the same components are denoted by the same reference numerals, and duplicated explanations will be omitted. In the drawings, the size and ratio of each component are exaggerated to facilitate understanding of the embodiment, and may differ from the actual size and ratio.

[0010] In each figure, arrows (coordinate system) represented by X, Y, and Z are used to indicate the orientation of members constituting the vehicle structure according to the embodiment. X indicates the front-rear direction and is referred to as the front-rear direction X. Y indicates the vehicle width direction and is referred to as the vehicle width direction Y. Z indicates the vehicle height direction and is referred to as the height direction Z.

[0011] The vehicle structure according to this embodiment has a protector 100 that protects piping P for brakes and the like that is arranged under the floor near the front wheels of a vehicle V, as shown in Figs. 4 and 5. In Figs. 4 and 5, the objects shown are simplified to the side member M1 and the cross member M2 for ease of viewing. In this embodiment, the piping P is arranged close to each other so as to be gathered at the top of the protector 100. The protector 100 can be arranged below the floor panel on the front wheel side of the vehicle, as shown in Fig. 5. The protector 100 includes a bottom surface 10, a rising wall 20, a holding portion 30, and a confirmation portion 40, as shown in Fig. 1. This will be described in detail below.

[0012] (Bottom) The bottom surface 10 is configured to be aligned horizontally when mounted on a vehicle. The shape of the bottom surface 10 can be appropriately configured according to the positions of the pipe P and the holding portion 30 and the checking portion 40 described below. Therefore, the shapes shown in the drawings are merely examples, and the specific shapes may be different from those shown in the drawings.

[0013] (Rising wall) The rising wall 20 is configured such that at least a part of the front and side edges, which are a part of the edge when the bottom surface 10 is viewed in a plan view when the base surface 10 is mounted on the vehicle, rises upward from the bottom surface 10. The rising wall 20 is provided on either the front side or the side in anticipation of the range into which flying objects such as stones may fly from the road surface when the base surface 10 is mounted on the vehicle and traveling (see FIG. 2).

[0014] This makes it possible to block the intrusion path of chippings. In this embodiment, the rising wall 20 is formed to rise obliquely, not perpendicularly, to the bottom surface 10, as shown in Figs. 1, 7, etc. This allows the front rising wall 20 to absorb the reaction force of water when a vehicle equipped with the vehicle structure according to this embodiment enters a flooded passage, and can function to prevent damage to the protector 100. In addition, the front and side rising walls 20 can be configured to be connected as shown in Figs. 1, 2, etc., to improve the rigidity of the protector 100.

[0015] (holding part) At least three holding parts 30 are provided, and are configured to be fixed by attaching the piping P located nearby when mounted on the vehicle. Providing the holding parts 30 in the protector 100 allows the piping layout to be in a position that is not affected by the vehicle body structure, and increases the degree of freedom in the layout. In addition, since it is not necessary to extend the bottom surface of the protector 100 in order to attach the protector 100 to nearby parts, it is possible to prevent or suppress the protector 100 from becoming larger and heavier.

[0016] 6, the holding portion 30 includes first holding portions 31, 32 and a second holding portion 33 having a different mounting direction for the pipe P from that of the first holding portions 31, 32. By making the mounting direction of the pipe P different between the first holding portions 31, 32 and the second holding portion 33, it is possible to suppress positional deviation in the front-rear direction X with respect to the pipe P. In addition, the first holding portions 31, 32 can absorb variations in the pipe P in the front-rear direction X.

[0017] The first holding portions 31, 32 are positioned along the front-rear direction X of the vehicle when mounted on the vehicle, and include a groove portion 34 for attaching the piping P as shown in Fig. 8. The groove portion 34 includes a guide portion 35 and an attachment portion 36 or an attachment portion 37 (corresponding to a tapered portion) when the first holding portion 31 is viewed from the front. As shown in Fig. 8, the guide portion 35 is configured in a tapered shape so that its widthwise size gradually decreases as its position in the height direction Z changes from the attachment side to make it easier to attach the piping P.

[0018] The mounting portion 36 is formed in a substantially circular shape similar to the shape of the cross section perpendicular to the axis of the pipe P. In this embodiment, the tapered portion 35 is similarly provided on the first holding portion 31 and the first holding portion 32. Meanwhile, the mounting portions 36 and 37 are provided such that the mounting portion 36 is provided on the first holding portion 31 and the mounting portion 37 is provided on the first holding portion 32. As shown in FIG. 9, the mounting portion 36 is configured so that the diameter size is uniform regardless of the position in the front-rear direction X, whereas the mounting portion 37 is formed so that the diameter size of the circle gradually increases along the front-rear direction X in which the pipe P extends, as shown in FIG. 10.

[0019] Therefore, even if the distance between the pipes P varies, the pipes P can be assembled to the holding part 30, and the holding force can be exerted on the pipes P. Also, the first holding part 32 has a portion configured to be larger than the diameter of the pipes P due to the tapered shape of the attachment part 37 as shown in FIG. 10. Therefore, the variation in the distance between the pipes P can be absorbed. Note that the first holding part having the attachment part 37 is one of the first holding parts 32 in this embodiment, and the number does not have to be one, but if holding force is prioritized, one is preferable. Also, the number of holding parts 30 is three in this embodiment, but it does not necessarily have to be three.

[0020] The second holding portion 33 is configured to include a tapered portion 35 and an attachment portion 36 having a uniform diameter, similar to the first holding portion 31. Therefore, a description of the second holding portion 33 will be omitted.

[0021] (Verification Department) The confirmation unit 40 is configured so that the piping P attached to the protector 100 can be visually confirmed from below the vehicle when the piping P is mounted on the vehicle as shown in Fig. 3. The confirmation unit 40 includes a hole 41, a first wall 42, and a second wall 43 as shown in Fig. 6.

[0022] The piping P attached to the protector 100 is provided with a fastening portion T as shown in Fig. 1 etc. The hole portion 41 is provided so that the fastening portion T of the piping P attached to the protector 100 in a state where the piping P is mounted on the vehicle can be visually confirmed from below in the state where the piping is mounted on the vehicle (see Fig. 3). This makes it possible to detect leakage of brake or other fluid from the piping P due to poor connection of the piping P during inspection of the finished product, thereby reducing the risk of leakage. The hole portion 41 is provided so as to be spaced inward in the vehicle width direction Y from the piping P when viewed in a plan view as shown in Fig. 2.

[0023] This makes it possible to prevent leakage by hiding the area of ​​the piping P that may lead to leakage when flying objects such as stones fly toward the protector 100 from the road surface, thereby reducing the risk (chipping risk) of the flying object hitting the piping P. In this embodiment, the hole 41 is formed in a rectangular shape, but the specific shape may be a polygon other than a rectangular shape or a circle, as long as the fastening portion T can be confirmed from the underside when the protector is mounted on the vehicle. The hole 41 is provided at an angle with respect to the bottom surface 10 of the protector 100. One of the edges constituting the hole 41 is configured to be provided on the bottom surface 10.

[0024] The first wall portion 42 is configured so that a part of the edge of the hole portion 41 rises from the bottom surface 10 as shown in FIG. 6. The first wall portion 42 is provided in pairs. In this embodiment, the first wall portion 42 forms the edge portions of two opposing sides of the rectangular side of the hole portion 41. The first wall portion 42 is formed in a substantially triangular shape when viewed from the side, but the specific shape of the first wall portion does not have to be triangular as long as the fastening portion T can be seen from the hole portion when mounted on the vehicle. The second wall portion 43 is provided adjacent to the first wall portion 42 and is configured to form an edge portion that continues to the edge portion of the hole portion 41 formed by the first wall portion 42.

[0025] By providing the first wall portion 42 and the second wall portion 43 so as to form the hole portion 41 at an angle with respect to the bottom surface 10, it is possible to inspect for liquid leakage by looking into the hole portion 41 from behind. In addition, the first wall portion 42 and the second wall portion 43 reduce the area of ​​the pipe P exposed from the hole portion 41, thereby lowering the chipping risk and improving the surface rigidity of the bottom surface 10 of the protector 100.

[0026] The present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the claims. In the above, the pipe P attached to the protector 100 is described as a brake pipe, but the type of the pipe P is not particularly limited, and may be, for example, a fuel pipe other than the brake pipe.

[0027] Further, although it has been described above that the rising wall 20 is formed to rise obliquely relative to the bottom surface 10, the rising wall may be formed to rise perpendicularly relative to the bottom surface 10 as long as the intrusion path of chippings can be blocked.

[0028] The following embodiments are also within the scope of the present invention: a vehicle structure as defined in claim 1 having the features of claim 2; a vehicle structure as defined in claim 2 having the features of claim 3; a vehicle structure as defined in claim 3 having the features of claim 4; a vehicle structure as defined in any one of claims 1 to 4 having the features of claim 5; a vehicle structure as defined in claim 5 having the features of claim 6; a vehicle structure as defined in claim 5 or claim 6 having the features of claim 7; a vehicle structure as defined in any one of claims 1 to 7 having the features of claim 8; a vehicle structure as defined in claim 8 having the features of claim 9; a vehicle structure as defined in claim 8 or claim 9 having the features of claim 10. [Explanation of symbols]

[0029] 100 Protector, 10 bottom, 20 Rising walls, 30 holding part, 41 Hole, 42 1st wall, 43 2nd wall section, P piping, T fastening part, Y Vehicle width direction.

Claims

1. It has multiple pipes under the floor of the vehicle, The plurality of pipes are arranged in close proximity to each other, A vehicle structure, in which a protector is provided on the plurality of pipes and fixed by being attached to a holding portion.

2. The vehicle structure according to claim 1 , wherein at least three of the holding portions are provided, and one of the three holding portions is oriented in a different direction from the other two holding portions.

3. The vehicle structure according to claim 2 , wherein one of the retaining portions facing the same direction has a portion having a diameter larger than that of the pipe.

4. The vehicle structure according to claim 1 , wherein the holding portion is configured to be able to hold the pipe by elasticity, and includes a tapered portion formed so as to widen in the extending direction of the pipe.

5. 5. The vehicle structure according to claim 1, wherein the protector has a rising wall formed so as to rise upward from a bottom surface thereof toward the front or side.

6. 6. The vehicle structure according to claim 5, wherein the rising walls are provided and connected to the front and sides when the vehicle is mounted.

7. 6. The vehicle structure according to claim 5, wherein the rising wall located at the front when the vehicle is mounted thereon is formed to be inclined obliquely.

8. The plurality of pipes have fastening portions at positions corresponding to the protector, The vehicle structure according to claim 1 , wherein the protector has a hole through which the fastening portion can be seen from below when the protector is mounted on the vehicle.

9. The vehicle structure according to claim 8 , wherein the hole is disposed on an inner side in a vehicle width direction relative to the pipe and spaced apart from the pipe.

10. a first wall portion having an edge portion of the hole provided on a bottom surface of the protector and a remaining portion of the edge portion rising from the bottom surface; a second wall portion provided adjacent to the first wall portion and forming a remaining edge portion following the edge portion that constitutes the hole and is positioned so as to rise from the bottom surface; The vehicle structure of claim 8 .

Citation Information

Patent Citations

  • JP1986180840U