Vehicle body rear structure

Abstract

The utility model provides a kind of car body rear structure.The car body rear structure has rear wall lower plate and rear bumper, the rear wall lower plate has vertical part extending along the direction crossing with the direction of vehicle length, a plurality of rear bumper supports are welded on the rear surface of the vertical part along the vehicle width direction at intervals, rear bumper mounting portion and clamping hole are provided on each rear bumper support, the rear bumper is mounted on the rear bumper mounting portion, and the mounting portion of wiring harness is fitted in the clamping hole.Based on the above structure of the utility model, the opening for fastening the rear bumper and the clamping hole for mounting the wiring harness do not need to be provided on the rear wall lower plate.

Description

Technical Field

[0001] This utility model relates to a rear structure of a vehicle body. Background Technology

[0002] Typically, the rear structure of a vehicle includes the rear floor pan, the lower rear panel, the rear bumper reinforcement, and the rear bumper.

[0003] Figure 5 is a schematic diagram showing the rear structure of a vehicle body in the prior art, illustrating the rear floor a and the lower rear panel f, omitting the rear bumper reinforcement and the rear bumper. In Figure 5, arrow RR indicates the rear of the vehicle body, arrow RH indicates the right side of the vehicle body, and arrow UP indicates the top.

[0004] The rear floor panel (also known as the rear floor assembly) a includes a horizontal section b extending in a horizontal direction, a vertical section c extending upward from the rear end of the horizontal section b, a rear horizontal section d extending rearward in a horizontal direction from the upper end of the vertical section c, and a flange e extending downward from the rear end of the rear horizontal section d. The luggage compartment is located above the horizontal section b.

[0005] The lower rear panel f includes a horizontal portion g extending horizontally below the horizontal portion b of the rear floor panel a, and a vertical portion h extending upward from the rear end of the horizontal portion g. The horizontal portion g engages with the lower surface of the horizontal portion b of the rear floor panel a; the upper end of the vertical portion h engages with the flange e of the rear floor panel a. Thus, the rear floor panel a and the lower rear panel f form a closed cross-section structure, thereby ensuring the rigidity of the rear of the vehicle body.

[0006] The rear bumper reinforcement (not shown) is located below the lower rear panel f. This rear bumper reinforcement has a closed cross-section structure and extends along the vehicle width direction.

[0007] On the vertical portion h of the lower rear panel f, there are multiple openings i for fastening the rear bumper. These openings i are arranged at predetermined intervals along the width direction of the vertical portion h. On the bracket integral with the rear bumper, there are bolt insertion holes corresponding to the positions of the openings i. By inserting bolts (not shown) into the bolt insertion holes and the openings i of the vertical portion h, the rear bumper is fastened to the lower rear panel f.

[0008] In addition, multiple clamping holes j for mounting a wiring harness (not shown) are provided on the vertical portion h of the lower rear panel f. These clamping holes j are arranged at predetermined intervals along the width direction of the vertical portion h. The wiring harness includes power and signal wires that connect to equipment (such as a reversing radar) mounted on the rear bumper.

[0009] Thus, in the aforementioned prior art rear vehicle structure, the rear bumper is directly fastened to the vertical portion h of the lower rear panel f. Therefore, if the opening position i is off, the position of the rear bumper relative to the lower rear panel f will also deviate from the correct position. Since both the lower rear panel f and the rear bumper are high-rigidity components, it is difficult to change the relative position of the rear bumper and the lower rear panel f when the rear bumper is fastened to the vertical portion h of the lower rear panel f, thus making it impossible to correct the positional deviation of the rear bumper.

[0010] Furthermore, in the aforementioned prior art rear structure of the vehicle body, without the installation of equipment such as a reversing radar, the clamping hole j needs to be sealed with a plug hole to prevent rainwater from flowing into the lower rear panel f, which makes the operation cumbersome. Utility Model Content

[0011] In view of the above situation, the purpose of this utility model is to provide a rear body structure that does not require openings for fastening the rear bumper and clamping holes for installing wiring harnesses on the lower rear panel.

[0012] As a technical solution to the above-mentioned technical problems, the present invention provides a rear body structure, which includes a rear lower panel and a rear bumper. The rear lower panel has a vertical portion extending in a direction intersecting the vehicle length direction. Multiple rear bumper brackets are welded at intervals along the vehicle width direction on the rear surface of the vertical portion. Each rear bumper bracket is provided with a rear bumper mounting portion and a clamping hole. The rear bumper is mounted on the rear bumper mounting portion, and the mounting portion of the wiring harness is fitted into the clamping hole.

[0013] The advantages of the aforementioned rear vehicle structure of this utility model are: it eliminates the need for openings in the lower rear panel for securing the rear bumper and for clamping holes for installing wiring harnesses. Specifically, since the rear bumper is mounted on the rear bumper mounting portion of the rear bumper bracket welded to the rear surface of the vertical portion of the lower rear panel, and the wiring harness mounting portion is fitted into the clamping holes of the rear bumper bracket, if there is a deviation in the installation position of the rear bumper, the rear bumper can be corrected to the correct position by deforming the less rigid bumper bracket (whose rigidity is lower than that of the lower rear panel and the rear bumper). Furthermore, since the clamping holes are located on the rear bumper bracket, there is no need to close the clamping holes when the wiring harness is not in use. That is, in the prior art structure, because clamping holes are provided in the lower rear panel, it is necessary to close the clamping holes when the wiring harness is not in use to prevent rainwater from flowing into the lower rear panel, while the structure based on this utility model eliminates the need for such an operation.

[0014] In addition, in the above-mentioned rear structure of the vehicle body of this utility model, it is preferred that the rear bumper bracket has a welding plate portion that is welded to the vertical portion of the lower rear panel, the rear bumper mounting portion is configured to bend backward from the upper end of the welding plate portion, and the clamping hole is opened on the fixing portion provided below the welding plate portion.

[0015] Based on this structure, when installing the rear bumper onto the rear bumper mounting part on the rear bumper bracket, the installation operation (e.g., bolt tightening operation) can be performed from above the fixing part. Therefore, when the wiring harness mounting part is fitted into the clamping hole before installing the rear bumper, the operation is not hindered by the wiring harness, thus achieving good operational convenience.

[0016] In addition, in the above-mentioned rear structure of the vehicle body of this utility model, it is preferable that the mounting part is provided at multiple locations along the length of the wiring harness, and the fixing part is provided at two locations below the welding plate part.

[0017] Based on this structure, the mounting portion of the wiring harness can be fitted into the clamping hole of either of the two fixing portions below the welding plate. In other words, if only one fixing portion is provided below the welding plate, the spacing of the mounting portion along the length of the wiring harness must be consistent with the spacing of the rear bumper bracket (the spacing between the fixing portions); however, if two fixing portions are provided below the welding plate, it is not necessary to maintain these two spacings consistent. Even if there is a deviation in the welding position of the rear bumper bracket in the vehicle width direction, or a deviation in the positioning position of the mounting portion along the length of the wiring harness, the mounting portion can still be fitted into a single clamping hole. Attached Figure Description

[0018] Figure 1 is a perspective view of the rear structure of the vehicle body according to an embodiment of the present invention.

[0019] Figure 2 is a perspective view of the rear structure of the vehicle body according to an embodiment of the present invention. The rear bumper reinforcement, the rear bumper, and the wiring harness are omitted in the figure.

[0020] Figure 3 is a longitudinal cross-sectional view of the rear structure of the vehicle body according to an embodiment of the present invention.

[0021] Figure 4 is a cross-sectional view showing the state after the rear bumper bracket has fixed the wiring harness.

[0022] Figure 5 is a perspective view of the rear structure of a vehicle body in the prior art, omitting the rear bumper reinforcement and the rear bumper itself. Detailed Implementation

[0023] The rear structure of the vehicle body of this utility model will be described below with reference to the accompanying drawings.

[0024] Figure 1 is a perspective view showing the rear structure of the vehicle body according to this embodiment. Figure 2 is a perspective view showing the rear structure of the vehicle body according to this embodiment, omitting the rear bumper reinforcement, rear bumper, and wiring harness. Figure 3 is a longitudinal cross-sectional view showing the rear structure of the vehicle body according to this embodiment, and more specifically, a cross-sectional view corresponding to the position of line III-III in Figure 1. In Figures 1 to 3, arrow RR indicates the rear of the vehicle body, and arrow UP indicates the top; in Figures 1 and 2, arrow RH indicates the right side of the vehicle body.

[0025] As shown in Figures 1 and 3, the rear structure of the vehicle body in this embodiment includes a rear floor pan 1, a rear lower panel 2, a rear bumper reinforcement 3, a rear bumper 4 (shown only in Figure 3), multiple rear bumper brackets 5, and a wiring harness 6.

[0026] As shown in Figures 1 and 2, the rear floor plate 1 includes a horizontal portion 11 extending in a horizontal direction, a vertical portion 12 extending upward from the rear end of the horizontal portion 11, a rear horizontal portion 13 extending rearward in a horizontal direction from the upper end of the vertical portion 12, and a flange 14 extending downward from the rear end of the rear horizontal portion 13. The upper part of the horizontal portion 11 is a luggage compartment.

[0027] As shown in Figures 1 to 3, the rear lower panel 2 is constructed by joining the rear lower panel main panel 21 with two rear lower panel side panels 22. The rear lower panel main panel 21 extends from the right end of the vehicle body to the left end along the vehicle width direction, and the two rear lower panel side panels 22 are respectively joined to the rear surfaces of the two sides of the rear lower panel main panel 21 in the vehicle width direction.

[0028] The rear lower panel main panel 21 includes a horizontal portion 23 extending horizontally below the horizontal portion 11 of the rear floor plate 1, and a vertical portion 24 extending upward from the rear end of the horizontal portion 23. Although not shown, the horizontal portion 23 engages with the lower surface of the horizontal portion 11 of the rear floor plate 1. The upper end of the middle portion of the vertical portion 24 in the vehicle width direction engages with the flange 14 of the rear floor plate 1. In this way, the rear floor plate 1 and the rear lower panel main panel 21 form a closed cross-section structure, thereby ensuring the rigidity of the rear of the vehicle body.

[0029] The rear lower panel side plate 22 has a vertical portion 25, which engages with the rear surface of the vertical portion 24 of the rear lower panel main panel 21. The upper end of the vertical portion 25 also engages with the flange 14 of the rear bottom plate 1.

[0030] As shown in Figures 1 and 3, the rear bumper reinforcement 3 is located below the lower rear panel 2. This rear bumper reinforcement 3 has a closed cross-section structure and extends along the vehicle width direction.

[0031] As illustrated in Figure 5, the vertical portion h of the rear lower panel f in the prior art has multiple openings i for fastening the rear bumper and multiple clamping holes j for installing wiring harnesses. Therefore, if the openings i are misaligned, the fastening position of the rear bumper relative to the rear lower panel f will also be misaligned. Furthermore, since both the rear lower panel f and the rear bumper are high-rigidity components, it is difficult to correct the positional deviation of the rear bumper. In addition, without equipment such as a reversing radar, the clamping holes j must be sealed with plugs, making the operation cumbersome.

[0032] To solve the aforementioned technical problems, in this embodiment, as shown in Figures 1 and 2, multiple rear bumper brackets 5 are provided at equal intervals along the vehicle width direction on the rear surfaces of the vertical portions 24 and 25 of the main panel 21 and the two side panels 22 constituting the rear lower panel 2. Specifically, these rear bumper brackets 5 are welded to the rear surfaces of the vertical portions 24 of the main panel 21 and the rear surfaces of the vertical portions 25 of the side panels 22.

[0033] Furthermore, each rear bumper bracket 5 is provided with a rear bumper mounting part 51 for mounting the rear bumper 4, and a clamping hole 52 (see Figure 2) for fitting the mounting part 61 (see Figure 1) of the wiring harness 6. Therefore, it is unnecessary to open an opening in the lower rear panel 2 for fastening the rear bumper 4, nor is it necessary to open a clamping hole in the lower rear panel 2 for mounting the wiring harness. This will be explained in detail below.

[0034] The rear bumper bracket 5 welded to the rear surface of the vertical portion 24 of the main panel 21 of the lower rear panel is structurally identical to the rear bumper bracket 5 welded to the rear surface of the vertical portion 25 of the side panel 22 of the lower rear panel. Therefore, the following description will only take the rear bumper bracket 5 welded to the rear surface of the vertical portion 24 of the main panel 21 of the lower rear panel as an example.

[0035] Figure 4 is a cross-sectional view showing the state after the rear bumper bracket 5 has fixed the wiring harness 6 (a cross-sectional view along the direction perpendicular to the vehicle width). As shown in Figure 4, the rear bumper bracket 5 includes a welding plate portion 53, a rear bumper mounting portion 51, and a fixing portion 54 with clamping holes 52.

[0036] The welding plate portion 53 is welded and fixed to the vertical portion 24 in a vertical direction, with the rear surface of the vertical portion 24 of the rear lower panel main panel 21 abutting against it.

[0037] The rear bumper mounting portion 51 bends rearward (to the right in Figure 4) from the upper end of the welded flat plate portion 53. Specifically, it bends in a manner that extends diagonally downward in the rearward direction. A bolt insertion hole 55 is provided in the middle part of the rear bumper mounting portion 51. As shown in Figure 3, the horizontal portion 41 of the rear bumper 4 overlaps the upper surface of the rear bumper mounting portion 51, and the bolt B1 is inserted from above and tightened into the bolt insertion hole on the horizontal portion 41 and the bolt insertion hole 55 of the rear bumper mounting portion 51, thereby securing the rear bumper 4 to the rear bumper bracket 5. That is, the rear bumper 4 is mounted on the lower rear panel 2 by multiple rear bumper brackets 5. In addition, a rear bumper cover 42 is installed above the horizontal portion 41 of the rear bumper 4. Reference numeral 7 in Figure 3 indicates the tailgate.

[0038] Furthermore, in this embodiment, two fixing portions 54 are provided on the lower side of the welding plate portion 53 (see FIG. 3), as shown in FIG. 1. As shown in FIG. 4, each fixing portion 54 includes an inclined portion 54a extending obliquely downward in the rearward direction from the lower end of the welding plate portion 53, and a fixing plate 54b extending downward from the lower end of the inclined portion 54a. Thus, when the welding plate portion 53 of the rear bumper bracket 5 is welded and fixed to the rear surface of the vertical portion 24 of the rear lower panel main panel 21, a small gap is formed between the vertical portion 24 of the rear lower panel main panel 21 and the fixing plate 54b of the rear bumper bracket 5. In addition, a clamping hole 52 is provided in the middle part of the fixing plate 54b. As shown in FIG. 2, in the two fixing portions 54 of each rear bumper bracket 5, the clamping hole 52 of one fixing portion is circular, and the clamping hole 52 of the other fixing portion is an elongated hole with the vehicle width direction as the major axis.

[0039] As shown in Figure 1, the wiring harness 6 includes a wiring harness body 62 and a plurality of mounting portions 61 arranged at predetermined intervals along the length of the wiring harness body 62. The positions of the mounting portions 61 correspond one-to-one with the positions of the fixing portions 54 of the rear bumper bracket 5. The mounting portions 61 are made of rubber or resin.

[0040] As shown in Figure 4, the mounting part 61 has a small-diameter portion 61a and a large-diameter portion 61b in cylindrical shape. The outer diameter of the small-diameter portion 61a is approximately the same as the inner diameter of the clamping hole 52 of the rear bumper bracket 5. The large-diameter portion 61b is connected to the small-diameter portion 61a, and its outer diameter is larger than the inner diameter of the clamping hole 52 of the rear bumper bracket 5. By elastically deforming the large-diameter portion 61b and passing it through the clamping hole 52, and positioning the small-diameter portion 61a inside the clamping hole 52, the mounting part 61 is mounted on the rear bumper bracket 5. That is, the wiring harness 6 is mounted on the lower rear panel 2 through multiple rear bumper brackets 5. With the rear bumper bracket 5 mounted on the lower rear panel 2, the large-diameter portion 61b of the mounting part 61 is located in the gap between the vertical portion 24 of the main panel 21 of the lower rear panel and the fixing plate 54b of the rear bumper bracket 5.

[0041] As described above, in this embodiment, the rear bumper 4 is mounted on the rear bumper mounting portions 51 of a plurality of rear bumper brackets 5 welded to the rear surface of the vertical portions (24, 25) of the lower rear panel 2, and the plurality of mounting portions 61 of the wiring harness 6 are respectively fitted into the clamping holes 52 of the plurality of rear bumper brackets 5. Therefore, if there is a deviation in the mounting position of the rear bumper 4, the rear bumper 4 can be corrected to the correct position by deforming the less rigid bumper bracket 5 (whose rigidity is lower than that of the lower rear panel 2 and the rear bumper 4). For example, if the mounting position of the rear bumper 4 is higher than the correct position, the rear bumper 4 can be corrected to the correct position by deforming the rear bumper mounting portions 51 downward.

[0042] Furthermore, since the clamping hole 52 is located on the rear bumper bracket 5, it is not necessary to close the clamping hole 52 when the wiring harness 6 is not in use. That is, in the aforementioned prior art structure, because a clamping hole is provided on the lower rear panel, it is necessary to close the clamping hole to prevent rainwater from flowing into the lower rear panel when the wiring harness is not in use, while the structure based on this embodiment does not require such an operation.

[0043] Furthermore, in this embodiment, when the rear bumper 4 is installed on the rear bumper mounting portion 51 of the rear bumper bracket 5, the bolt tightening operation can be performed from above the fixing portion 54 of the rear bumper bracket 5. Therefore, when the mounting portion 61 of the wiring harness 6 is fitted into the clamping hole 52 before installing the rear bumper 4, the operation is not hindered by the wiring harness 6, thereby achieving good operational convenience.

[0044] Furthermore, in this embodiment, the mounting portion 61 of the wiring harness 6 can be fitted into the clamping hole 52 of either of the two fixing portions 54 below the welding plate portion 53 of the rear bumper bracket 5. In other words, if only one fixing portion 54 is provided below the welding plate portion 53, the spacing of the mounting portion 61 in the length direction of the wiring harness 6 must be consistent with the spacing of the rear bumper bracket 5 (the spacing between fixing portions); however, if two fixing portions 54 are provided below the welding plate portion 53, it is not necessary to maintain these two spacings consistent. Therefore, even if there is a deviation in the welding position of the rear bumper bracket 5 in the vehicle width direction, or a deviation in the positioning position of the mounting portion 61 in the length direction of the wiring harness 6, the mounting portion 61 can still be fitted into the clamping hole 52 of one of the fixing portions 54.

[0045] However, this utility model is not limited to the above-described embodiments and can be modified appropriately. For example, in the above embodiments, the rear lower panel 2 is composed of a rear lower panel main panel 21 and two rear lower panel side panels 22 joined to the two sides of the rear lower panel main panel 21, that is, the rear lower panel 2 is composed of multiple panels, but this utility model is not limited to this, and the rear lower panel 2 can also be composed of a single panel.

[0046] In addition, in the above embodiment, two clamping holes 52 are provided for each rear bumper bracket 5, but the present invention is not limited to this. It is also possible to provide only one clamping hole 52 or more than three clamping holes 52 for each rear bumper bracket 5.

Claims

1. A rear structure of a vehicle body, comprising a rear lower panel and a rear bumper, characterized in that: The lower rear panel has a vertical portion extending in a direction intersecting the vehicle length direction. Multiple rear bumper brackets are welded at intervals along the vehicle width direction on the rear surface of the vertical section. Each of the aforementioned rear bumper brackets is provided with a rear bumper mounting part and a clamping hole. The rear bumper is mounted on the rear bumper mounting portion, and the mounting portion of the wiring harness is fitted into the clamping hole.

2. The rear structure of the vehicle body as described in claim 1, characterized in that: The rear bumper bracket has a welded flat plate portion that is welded to the vertical portion of the lower rear panel. The rear bumper mounting portion is configured to bend rearward from the upper end of the welded flat plate portion. The clamping hole is located on the fixing part provided below the welding plate.

3. The rear structure of the vehicle body as described in claim 2, characterized in that: The mounting portion is provided at multiple locations along the length of the wire harness. The fixing part is provided at two locations below the welding plate.

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