Automobile rear bumper mounting structure

Abstract

The application relates to the technical field of automobile parts, and discloses a rear bumper mounting structure of an automobile, which comprises two mounting brackets mounted on rear tail aprons, the two mounting brackets are symmetrically mounted on the two sides of a back door of the automobile, and a rear bumper assembly is mounted below the back door between the two mounting brackets; the straight-line distance between the two mounting brackets is greater than the width dimension of the back door, and when the back door is folded down to be flush with the horizontal plane, the upper end surface of the rear bumper assembly abuts against the back door. The rear bumper mounting structure has the advantages that the left and right mounting brackets and the rear bumper assembly below the back door are arranged, the mounting bracket and the rear bumper assembly are not interfered with when the back door is folded down, and the rear bumper assembly can meet the assembly requirement of the back door.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to a rear bumper mounting structure for automobiles. Background Technology

[0002] The rear bumper is one of the important components of a car. In addition to its decorative function, the rear bumper also plays a role in reducing external impact and protecting the rear of the vehicle. With the continuous improvement of production levels and user requirements, the definition of car usage scenarios is constantly changing, and traditional assembly solutions can no longer meet the assembly requirements.

[0003] Referring to existing patent number CN115489279A, a multi-functional tailgate system assembly and vehicle for automobiles are disclosed, including a tailgate body installed on the vehicle body. The tailgate body includes a tailgate frame, an upward-opening tailgate, and a downward-opening tailgate. The front end of the tailgate frame is hinged to the vehicle body, the front end of the upward-opening tailgate is hinged to the front end of the tailgate frame, and the lower end of the downward-opening tailgate is hinged to the lower end of the tailgate frame. A tailgate lock is provided between the vehicle body and the tailgate frame. The tailgate body is provided with a locking structure for fixing the upward-opening tailgate and the downward-opening tailgate to the tailgate frame.

[0004] The above solution increases rear cargo space by incorporating a downward-opening tailgate that rotates 90° clockwise to align with the rear cargo floor. (See reference) Figure 1 and Figure 2 , Figure 1 and Figure 2 All of these are existing rear bumper assemblies. When the tailgate opens, they will interfere with the bumper assembly, causing the rear bumper assembly to be unable to be installed when the tailgate is closed. Summary of the Invention

[0005] One of the objectives of this invention is to provide a rear bumper mounting structure for automobiles. By setting mounting brackets on the left and right sides and a rear bumper assembly located below the tailgate, the structure will not interfere with the mounting brackets and the rear bumper assembly when the tailgate is folded down, thus meeting the assembly requirements of the tailgate opening mechanism.

[0006] The present invention solves the above-mentioned technical problems through the following technical means:

[0007] A rear bumper mounting structure for automobiles includes two mounting brackets mounted on the rear tail skirt, the two mounting brackets being symmetrically mounted on both sides of the tailgate of the automobile, and a rear bumper assembly being mounted between the two mounting brackets below the tailgate of the automobile.

[0008] The straight-line distance between the two mounting brackets is greater than the width of the car tailgate. After the car tailgate is folded down to be flush with the horizontal plane, the upper surface of the rear bumper assembly abuts against the car tailgate.

[0009] Furthermore, the mounting bracket has a horizontally oriented mounting hole, and the mounting bracket has a mounting cavity communicating with the mounting hole. The rear bumper assembly has a clip within the mounting cavity. Thus, the rear bumper assembly can be directly pushed into the mounting bracket along the X-axis direction, and the clip will secure it to the mounting hole, making installation more convenient.

[0010] Furthermore, the lower end of the mounting bracket is provided with a U-shaped plate, and a snap-fit ​​plate is fixedly connected to the rear bumper assembly, the snap-fit ​​plate snapping into the U-shaped plate. This technical solution, by its design, allows the rear bumper assembly to be directly pushed into the mounting bracket along the X-axis direction, and the snap-fit ​​plate engages with the U-shaped plate, making installation more convenient.

[0011] Furthermore, the snap-fit ​​plate screws are installed on the rear bumper assembly, and the upper and lower ends of the snap-fit ​​plate are staggered with weight-reducing grooves. This technical solution is successful. By staggering the weight-reducing grooves, it is ensured that both the upper and lower end faces of the snap-fit ​​plate can fit against the inner sidewall of the U-shaped plate, reducing production costs.

[0012] Furthermore, the mounting bracket is screwed onto the rear apron with self-tapping screws. Thus, the pre-drilled holes facilitate the fixing of the self-tapping screws to the rear apron.

[0013] Furthermore, a hook-shaped plate is fixedly connected to the end of the snap-fit ​​plate away from the rear bumper assembly. Thus, after the snap-fit ​​plate is inserted into the U-shaped plate, the hook-shaped plate passes through the U-shaped plate and engages with the upper surface of the U-shaped plate, making the connection between the mounting bracket and the rear bumper assembly more secure.

[0014] Furthermore, the rear bumper assembly includes a lower frame, on which the snap-fit ​​plate and the buckle are mounted. An upper frame is screwed to the upper end of the lower frame, and the upper surface of the upper frame has a textured finish. In this technical solution, since the upper surface of the upper frame is obscured by the car's tailgate, separately injection molding the upper frame and applying a textured finish to its upper surface reduces production costs.

[0015] Furthermore, the end face of the mounting bracket near the tailgate of the vehicle features a textured finish. This technical solution reduces production costs by applying a textured finish to the inner wall of the mounting bracket.

[0016] The rear bumper mounting structure for automobiles according to the present invention has the following advantages:

[0017] 1. By setting up mounting brackets on the left and right sides and a rear bumper assembly located below the tailgate, there will be no interference with the mounting brackets and rear bumper assembly when the tailgate is folded down, thus meeting the rear bumper assembly requirements for tailgate opening.

[0018] 2. Through the cooperation of the U-shaped plate, snap-fit ​​plate, buckle, and mounting holes, the rear bumper assembly is directly pushed into the mounting bracket along the X-axis direction, so that the buckle is locked in the mounting hole and the snap-fit ​​plate is engaged with the U-shaped plate. There are fewer fixing points, making the installation more convenient.

[0019] 3. By staggering the weight-reducing grooves, it is ensured that the upper and lower ends of the snap-fit ​​plate can fit the inner sidewall of the U-shaped plate, thus reducing production costs.

[0020] 4. After the snap-fit ​​plate is inserted into the U-shaped plate, the hook plate passes through the U-shaped plate and snaps onto the upper surface of the U-shaped plate, making the connection between the mounting bracket and the rear bumper assembly more secure.

[0021] 5. By applying a textured finish to the end faces of the upper frame and mounting bracket, the solution of painting the body the same color was replaced, thus reducing production costs. Attached Figure Description

[0022] Figure 1 A schematic diagram of an existing automotive rear bumper mounting structure. Figure 1 ;

[0023] Figure 2 A schematic diagram of an existing automotive rear bumper mounting structure. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of an embodiment of the automotive rear bumper mounting structure of the present invention;

[0025] Figure 4 This is a front view of an embodiment of a car rear bumper mounting structure according to the present invention;

[0026] Figure 5 This is a schematic diagram of the left mounting bracket portion in an embodiment of a car rear bumper mounting structure according to the present invention;

[0027] Figure 6 This is a schematic diagram of the right mounting bracket portion in an embodiment of a car rear bumper mounting structure according to the present invention.

[0028] Figure 7 for Figure 5 A sectional view of section AA;

[0029] Figure 8 for Figure 6 A sectional view of section BB;

[0030] Figure 9 for Figure 5 A sectional view of the DD section;

[0031] Figure 10 for Figure 4A sectional view of the CC section.

[0032] In the diagram, the numbers represent: 1-rear skirt panel, 11-nut seat, 2-mounting bracket, 21-mounting hole, 22-mounting cavity, 23-U-shaped plate, 24-self-tapping screw, 3-car tailgate, 4-rear bumper assembly, 41-buckle, 42-clamp plate, 43-weight reduction groove, 44-hook plate, 45-lower frame, 46-upper frame, 50-rear bumper one, 60-rear bumper two. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0034] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and represent schematic diagrams, not actual pictures, and should not be construed as limiting the present invention. In order to better illustrate the embodiments of the present invention, some components in the figures may be omitted, enlarged, or reduced, and do not represent the actual product size; it is understandable for those skilled in the art that some well-known structures and their descriptions may be omitted in the figures.

[0035] In the figures of this invention, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the figures are only for illustrative purposes and should not be construed as limiting this invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0036] like Figures 1-10 As shown, a car rear bumper mounting structure includes two mounting brackets 2 mounted on the rear skirt panel 1. The two mounting brackets 2 are symmetrically mounted on both sides of the car tailgate 3. A rear bumper assembly 4 is mounted between the two mounting brackets 2 and below the car tailgate 3.

[0037] The straight-line distance between the two mounting brackets 2 is greater than the width of the car tailgate 3. After the car tailgate 3 is folded down to be flush with the horizontal plane, the upper surface of the rear bumper assembly 4 is close to the car tailgate 3.

[0038] In this design, the rear bumper is injection molded using PP+EPDM-TD20, and the mounting bracket 2 is injection molded using ABS.

[0039] In this embodiment, reference Figure 1 The rear bumper of the 150 and Figure 2 The rear bumper of the 260 model would interfere with the side frames when the tailgate is folded down. This solution, by limiting the position of the mounting brackets, ensures the installation requirements of the tailgate.

[0040] refer to Figure 8 The mounting bracket 2 has a horizontally opening mounting hole 21, and the mounting bracket 2 has a mounting cavity 22 communicating with the mounting hole 21. The rear bumper assembly 4 has a buckle 41 in the mounting cavity 22. In this way, the rear bumper assembly 4 can be directly pushed into the mounting bracket 2 along the X-axis direction, and the buckle 41 is used to lock the mounting hole 21, making the installation more convenient.

[0041] refer to Figure 9 The lower end of the mounting bracket 2 is provided with a U-shaped plate 23, and a snap-fit ​​plate 42 is fixedly connected to the rear bumper assembly 4, which snaps into the U-shaped plate 23. This technical solution, by setting it up so that the rear bumper assembly 4 is directly pushed into the mounting bracket 2 along the X-axis direction, and the snap-fit ​​plate 42 engages with the U-shaped plate 23, thus fixing the bumper assembly to the mounting bracket 2 at the corner.

[0042] The snap-fit ​​plate 42 is screwed onto the rear bumper assembly 4, and the upper and lower ends of the snap-fit ​​plate 42 are staggered with weight-reducing grooves 43. This technical solution is approved. By staggering the weight-reducing grooves 43, it is ensured that the upper and lower end faces of the snap-fit ​​plate 42 can fit against the inner sidewall of the U-shaped plate 23, reducing production costs.

[0043] The mounting bracket 2 is screwed onto the rear skirt panel 1 with self-tapping screws 24.

[0044] In this design, the mounting brackets 2 on the left and right sides are fixed to the nut seats 11 on the rear skirt panel 1 of the vehicle body by four self-tapping screws.

[0045] A hook-shaped plate 44 is fixedly connected to one end of the snap-fit ​​plate 42 away from the rear bumper assembly 4. Thus, after the snap-fit ​​plate 42 is inserted into the U-shaped plate 23, the hook-shaped plate 44 passes through the U-shaped plate 23 and engages with the upper surface of the U-shaped plate 23, making the connection between the mounting bracket 2 and the rear bumper assembly 4 more secure.

[0046] The rear bumper assembly 4 includes a lower frame 45, a snap-fit ​​plate 42 and a buckle 41, all of which are mounted on the lower frame 45. The upper frame 46 is screwed onto the upper end of the lower frame 45, and the upper surface of the upper frame 46 is treated with a leather texture.

[0047] In this solution, since the upper surface of the upper frame 46 is covered by the car tailgate 3, the upper frame 46 is injection molded separately and the upper surface of the upper frame 46 is treated with a leather texture. Compared with the traditional body-colored painting method, this can reduce costs. The surface treatment area is 0.04㎡ on one side, and it is expected to reduce costs by 90 yuan / ㎡*0.04㎡ / 0.9*1.15=4.6 yuan, resulting in a total cost reduction of about 9.2 yuan for the whole vehicle, thus reducing production costs.

[0048] The end face of mounting bracket 2 near the tailgate of the car is treated with a leather texture.

[0049] In this summary, the surface treatment method for the rear bumper upper frame 46, which is injection molded by PP+EPDM-TD30, is leather texture, rather than the same color as the body paint. This can also reduce costs from the perspective of the whole vehicle. Based on the paint area of ​​0.2㎡, the estimated cost reduction is 23 yuan.

[0050] The usage method and principle of this solution are as follows:

[0051] Positioning is achieved using the nut seat 11 on the rear skirt panel 1, and four self-tapping screws 24 are used to fix the mounting bracket 2 to the rear skirt panel 1.

[0052] With the tailgate 3 closed, push the PP+EPDM-TD20 injection-molded rear bumper assembly 4 into the mounting bracket 2 from the X direction. At this time, the one-piece injection-molded buckle 41 is engaged and fixed with the one-piece injection-molded mounting hole 21, and the snap plate 42 clamps the U-shaped plate 23.

[0053] By setting the mounting brackets 2 on the left and right sides and the rear bumper assembly 4 located below the tailgate 3, there will be no interference with the mounting brackets 2 and the rear bumper assembly 4 when the tailgate 3 is folded down.

[0054] Through the cooperation of the U-shaped plate 23, the snap-fit ​​plate 42, the buckle 41, and the mounting hole 21, the rear bumper assembly 4 is directly pushed into the mounting bracket 2 along the X-axis direction, so that the buckle 41 locks into the mounting hole 21, and the snap-fit ​​plate 42 engages with the U-shaped plate 23. With fewer fixing points, the installation is more convenient.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications and substitutions should be covered within the scope of the claims of the present invention. Technical aspects, shapes, and structures not described in detail in this invention are all well-known technologies.

Claims

1. A rear bumper mounting structure for automobiles, characterized in that: Includes two mounting brackets (2) installed on the rear skirt panel (1), the two mounting brackets (2) are symmetrically installed on both sides of the tailgate (3), and a rear bumper assembly (4) is installed between the two mounting brackets (2) and below the tailgate (3). The straight distance between the two mounting brackets (2) is greater than the width of the car tailgate (3). After the car tailgate (3) is folded down to be flush with the horizontal plane, the upper surface of the rear bumper assembly (4) abuts against the car tailgate (3). The lower end of the mounting bracket (2) is provided with a U-shaped plate (23), and a snap-fit ​​plate (42) is fixedly connected to the rear bumper assembly (4), and the snap-fit ​​plate (42) is snapped into the U-shaped plate (23); The snap-fit ​​plate (42) is installed on the rear bumper assembly (4) by screws, and the upper and lower surfaces of the snap-fit ​​plate (42) are provided with alternating weight reduction grooves (43). The snap-fit ​​plate (42) is fixedly connected to a hook plate (44) at one end away from the rear bumper assembly (4).

2. The automotive rear bumper mounting structure according to claim 1, characterized in that: The mounting bracket (2) has a horizontal mounting hole (21) and a mounting cavity (22) inside. The mounting hole (21) communicates with the mounting cavity (22). A buckle (41) is fixedly connected to the rear bumper assembly (4). The buckle (41) passes through the mounting hole (21) and is tightly attached to the inner wall of the mounting cavity (22).

3. The automotive rear bumper mounting structure according to claim 1, characterized in that: The mounting bracket (2) is screwed onto the rear skirt plate (1) with self-tapping screws (24).

4. The automotive rear bumper mounting structure according to claim 2, characterized in that: The rear bumper assembly (4) includes a lower frame (45), the snap plate (42) and the buckle (41) are both installed on the lower frame (45), and an upper frame (46) is screwed on the upper end of the lower frame (45). The upper surface of the upper frame (46) is treated with a leather texture. When the car tailgate (3) is closed, it covers the upper surface of the upper frame (46).

5. The automotive rear bumper mounting structure according to claim 1, characterized in that: The end face of the mounting bracket (2) near the rear door (3) of the car is treated with a leather texture.

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