An automobile rear bumper mounting structure, a bumper assembly and a vehicle

Abstract

The utility model provides a kind of automobile rear bumper mounting structure, bumper assembly and vehicle, it is related to bumper technical field, automobile rear bumper mounting structure includes bumper bracket and connecting component, connecting piece includes fixed part and positioning part connected with each other;Fixed part is used to be fixedly installed in the connecting hole of side wall plate piece;Bumper bracket has mounting hole, for being set to the outer periphery of the positioning part and with the fixed connection of connecting piece.The utility model discloses automobile rear bumper mounting structure, simplify the structure of two key components, bumper bracket no longer needs to manufacture complex positioning column, sheet metal also needs to set up matched positioning hole.This double simplification joint action brings the optimization of mould structure, the weight reduction of part and the reduction of whole vehicle manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of automotive bumper technology, and in particular to an automotive rear bumper mounting structure, bumper assembly, and vehicle. Background Technology

[0002] Currently, the installation of automotive rear bumpers typically employs a bracket-based fixing method. This involves designing a dedicated bracket to connect the bumper to the side panel of the vehicle body. This bracket usually includes a main locating post and auxiliary locating posts, with the posts approximately 30mm high. During assembly, the locating posts are inserted into corresponding square holes on the side panel for initial positioning. Waterproof nuts are then installed on the inside of the side panel, and finally, screws are used to lock the bracket onto the waterproof nuts for final fixation. While this structure ensures reliable bumper installation, it also has some significant drawbacks: Firstly, the bracket requires multiple locating posts, resulting in a complex mold structure and increased manufacturing costs. Secondly, the side panel requires corresponding locating square holes, which not only increases the complexity and cost of the sheet metal mold but also adds to the overall vehicle assembly process. Furthermore, the presence of multiple locating structures increases the weight of the parts, hindering lightweight vehicle design, and the overall structure still has room for optimization. Utility Model Content

[0003] In view of this, this utility model proposes a rear bumper mounting structure, a bumper assembly, and a vehicle, which solves the problems of complex molds, insufficient lightweight brackets, and high manufacturing costs caused by redundant positioning structures in existing rear bumper mounting structures.

[0004] The technical solution of this utility model is implemented as follows: On the one hand, this utility model provides a rear bumper mounting structure for automobiles, including a bumper bracket and a connecting assembly, wherein the connecting assembly includes a connector; The connector includes a fixing part and a positioning part that are connected to each other; The fixing part is used to be fixedly installed in the connection hole of the side panel; The bumper bracket has mounting holes for fitting around the positioning part and being fixedly connected to the connector.

[0005] Based on the above technical solution, preferably, the connector further includes a fastener, and a fastening hole is provided at the end of the positioning part away from the fixing part. The fastener passes through the fastening hole to fix the bumper bracket to the side panel.

[0006] Based on the above technical solution, preferably, the connector is made of an elastic material.

[0007] Based on the above technical solution, preferably, the fixing part and the connecting hole are interference fit.

[0008] Based on the above technical solution, preferably, the outer side of the fixing part is provided with a buckle, which is used to engage with the edge of the connecting hole on the side of the side panel away from the bumper bracket.

[0009] Based on the above technical solution, preferably, the connector has a sealing structure at the connection between its fixing part and positioning part for sealing the connection hole.

[0010] Based on the above technical solution, preferably, the sealing structure is a sealing gasket, which is used to seal the surface of the side panel and the bottom surface of the bumper bracket.

[0011] Based on the above technical solution, preferably, the sealing structure is a lip seal ring, the opening edge of the lip seal ring is used for sealing connection with the surface of the side panel, the bottom surface of the bumper bracket is provided with an annular flange coaxial with the mounting hole, the bottom of the annular flange is used to abut against the surface of the side panel, and the annular flange is located outside the lip seal ring.

[0012] Secondly, this utility model discloses a bumper assembly, including a bumper skin and the automotive rear bumper mounting structure described in the first aspect; wherein the bumper skin is connected to the bumper bracket.

[0013] Thirdly, this utility model also discloses a vehicle, including a side panel and the bumper assembly described in the second aspect, wherein the bumper assembly is connected to the side panel.

[0014] The present invention has the following advantages over the prior art: This utility model discloses a rear bumper mounting structure for automobiles. By introducing a connector that integrates fixing and positioning functions as a core hub, it restructures the installation relationship between the bumper bracket and the side panel. It simultaneously simplifies the structure of these two key components: the bumper bracket and the side panel. The bumper bracket no longer needs to manufacture complex positioning pins, and the sheet metal no longer needs to have matching positioning holes. This dual simplification results in optimized mold structure, reduced part weight, and lower overall vehicle manufacturing costs, thus achieving an overall optimization of the rear bumper mounting structure.

[0015] By employing a lip seal combined with a protective and limiting structure of annular flange, the sealing performance is achieved while greatly improving the sealing system's resistance to aging, resistance to foreign matter erosion, and long-term reliability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a first-view exploded view of the automobile rear bumper mounting structure disclosed in this utility model. Figure 2 This is a second-view exploded view of the automobile rear bumper mounting structure disclosed in this utility model. Figure 3 This is a first-view perspective three-dimensional structural diagram of the automobile rear bumper mounting structure disclosed in this utility model. Figure 4 This is a second-view perspective three-dimensional structural diagram of the automobile rear bumper mounting structure disclosed in this utility model. Figure 5 This is a three-dimensional structural diagram of the connector disclosed in this utility model; Figure 6 This is a schematic diagram of the planar structure of the automobile rear bumper mounting structure disclosed in this utility model. Figure 7 for Figure 6 Planar sectional view at point AA; Figure 8 This is a three-dimensional structural diagram of the rear bumper of an automobile disclosed in this utility model; Figure label: 1. Bumper bracket; 2. Connecting assembly; 21. Connector; 22. Fastener; 211. Fixing part; 212. Positioning part; 3. Side panel; 31. Connecting hole; 11. Mounting hole; 12. Annular flange; 210. Fastening hole; 2111. Buckle; 213. Sealing structure; 4. Bumper cover. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0021] In the description of the embodiments of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model 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, they should not be construed as limitations on the embodiments of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0024] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0025] like Figure 1 As shown, combined with Figure 2-7 This utility model discloses a car rear bumper mounting structure, including a bumper bracket 1 and a connecting component 2, wherein the connecting component 2 is used to establish a fixed connection between the bumper bracket 1 and the side panel 3.

[0026] The connecting component 2 disclosed in this embodiment includes a connector 21, wherein the connector 21 includes a fixing part 211 and a positioning part 212 connected to each other. Specifically, the positioning part 212 is located at one end of the fixing part 211 in the axial direction. The fixing part 211 is used to fix and install itself in the connecting hole 31 of the side panel 3, thereby realizing the reliable fixation of the connector 21 itself on the side panel 3.

[0027] During the installation process, the fixing part 211 of the connector 21 mates with the connecting hole 31 on the side panel 3, thus reliably fixing the connector 21 to the vehicle body. This step replaces the existing practice of opening a dedicated positioning square hole on the side panel 3. Since the fixing part 211 of the connector 21 (e.g., through a snap-fit ​​or interference fit) usually only needs to be fitted with a simple round or square hole for fixing, the stamping die for the side panel 3 is greatly simplified, reducing the manufacturing cost of sheet metal parts.

[0028] The bumper bracket 1 has mounting holes 11 for fitting around the positioning part 212 and being fixedly connected to the connector 21. For example, when the mounting holes 11 on the bumper bracket 1 are fitted onto the positioning part 212, they can be fixed by snap-fit, or other components can be used to achieve an axial fastening connection between the bumper bracket 1 and the positioning part. After the connector 21 is fixedly installed onto the connecting hole 31 of the vehicle side panel 3 via the fixing part 211, the positioning part 212 of the connector 21 can be used to cooperate with the mounting holes 11 on the bumper bracket 1. When the mounting holes 11 are fitted onto the positioning part 212, the bumper bracket 1 achieves precise pre-positioning in the radial direction (i.e., perpendicular to the installation direction). This design completely eliminates the positioning post that must extend from the body of the bumper bracket 1 in the traditional structure. Therefore, the mold structure of the bumper bracket 1 becomes extremely simple, eliminating the need for a mold structure for molding tall positioning posts, which not only reduces mold costs but also directly reduces the weight of the bracket itself.

[0029] The rear bumper mounting structure disclosed in this utility model restructures the installation relationship between the bumper bracket 1 and the side panel 3 by introducing a connector 21 that integrates fixing and positioning functions as a core hub. It simultaneously simplifies the structure of these two key components: the bumper bracket 1 and the side panel 3. The bumper bracket 1 no longer needs to manufacture complex positioning pins, and the sheet metal does not need to have matching positioning holes. This dual simplification results in optimized mold structure, reduced part weight, and lower overall vehicle manufacturing costs, thus optimizing the rear bumper mounting structure.

[0030] As one embodiment, in order to achieve the fixed connection between the bumper bracket 1 and the side panel 3 via the connector 21, the connecting component 2 in this embodiment further includes a fastener 22. The positioning part 212 has a fastening hole 210 at one end away from the fixing part 211. The fastener 22 passes through the fastening hole 210 to fix the bumper bracket 1 to the side panel 3.

[0031] The fasteners 22 are fitted into the axially opened fastening holes 210 of the connector 21, generating an axial tension force that firmly presses the radially positioned bumper bracket 1 onto the side panel 3, completing the final installation and fixation. This fastening connection method is mature and reliable, ensuring the strength and stability of the entire installation structure.

[0032] In some implementations, the fastener 22 is a screw, and the fastening hole 210 is a threaded hole that matches the screw. Screw connection is more convenient and faster, while also providing a high axial locking capability.

[0033] In some other implementations, the fastener 22 may also be a rivet, and the fastening hole 210 is a rivet hole that penetrates the axial direction of the connector 21.

[0034] In some implementations, the connector 21 is made of an elastic material, such as a one-piece plastic part. On one hand, the fixing part 211 and the positioning part 212 are integrally injection molded, optimizing the manufacturing process of the connector 21 itself. On the other hand, the plastic material has a certain elastic deformation capacity, which allows the fixing part 211 to compensate for dimensional tolerances through slight elastic deformation when pressed into the connecting hole 31 of the side panel part 3, achieving smoother assembly and a more reliable interference fit. Simultaneously, when the positioning part 212 mates with the mounting hole 11 of the bumper bracket 1, it also avoids abnormal noise or wear that may occur from hard metal contact, improving the overall assembly quality.

[0035] In some embodiments, the fixing part 211 is interference-fitted with the connecting hole 31. During assembly, when the fixing part 211 is pressed into the slightly smaller connecting hole 31, it undergoes slight elastic deformation, generating radial compressive force; after assembly, the tendency of the material to spring back causes the outer wall of the fixing part 211 to maintain a continuous and huge static friction force between the hole wall and the hole wall, thereby achieving a firm fixation of the connector 21 in the connecting hole 31 of the side panel 3.

[0036] As one embodiment, the fixing part 211 is provided with a buckle 2111 on the outside, which is used to engage with the edge of the connecting hole 31 on the side of the side panel 3 away from the bumper bracket 1.

[0037] In the initial assembly stage, the interference fit between the fixing part 211 of the plastic connector 21 and the connecting hole 31 of the plate generates sufficient radial friction. The primary function of this initial fixing effect is to ensure that the connector 21, after passing through the connecting hole 31 and before installing the bumper bracket 1, can reliably hang on the plate without falling off on its own, providing a stable pre-assembly state for subsequent operations. Subsequently, when the connector 21 is pressed in until the buckle 2111 on the outside of the fixing part 211 completely passes through the edge of the plate hole, the buckle 2111, relying on the elastic recovery deformation of the plastic, forms a mechanical interlock with the edge of the hole on the back side of the plate (the side away from the bumper bracket 1). When the bumper bracket 1 is installed on the positioning part 212 and then locked by the fastener 22, the buckle 2111 provides a guarantee to prevent the connector 21 from falling out of the connecting hole 31 towards the bumper bracket 1, ensuring the absolute reliability of the connection.

[0038] In some implementations, the connector 21 has a sealing structure 213 at the connection between its fixing part 211 and positioning part 212 to seal the connection hole 31. When the bumper bracket 1 is finally pressed onto the side panel 3 by the fastener 22, the sealing structure 213 is located precisely in the area of ​​the connection hole 31, blocking external contaminants such as water and dust from entering the vehicle body through the connection hole 31, thus improving the corrosion resistance and reliability of the entire vehicle.

[0039] As one implementation, the sealing structure 213 is a sealing gasket, which is used to seal the connection between the surface of the side panel 3 and the bottom surface of the bumper bracket 1.

[0040] Specifically, after the connector 21 is reliably fixed to the side panel 3 via the snap-fit ​​structure 2111, one side of the sealing gasket is already in contact with the surface of the side panel 3. Subsequently, when the bumper bracket 1 is fitted onto the positioning part 212 and finally locked by the fastener 22, the bottom surface of the bumper bracket 1 will press against the other side of the sealing gasket. Through the axial clamping force provided by the fastener 22, the sealing gasket undergoes elastic deformation, filling the microscopic uneven gaps between itself and the surface of the side panel 3 and the bottom surface of the bumper bracket 1, thereby forming a closed annular sealing band, effectively blocking moisture and dust that penetrate through the connecting hole 31.

[0041] Considering that the sealing gasket is made of rubber, although it is pressed between the bottom surface of the bumper bracket 1 and the surface of the side panel 3, there is a risk of aging or weathering after long-term use.

[0042] Therefore, this embodiment provides another implementation method. Specifically, the sealing structure 213 is a lip seal ring. The opening edge of the lip seal ring is used to seal and connect with the surface of the side panel 3. The bottom surface of the bumper bracket 1 is provided with an annular flange 12 coaxial with the mounting hole 11. The bottom of the annular flange 12 is used to abut against the surface of the side panel 3, and the annular flange 12 is located outside the lip seal ring.

[0043] Specifically, when the connector 21 is fixedly installed on the connecting hole 31 by the fixing part 211, the opening edge of the lip seal will contact the surface of the side panel 3. At the same time, the lip seal will undergo elastic deformation on the surface of the side panel 3 during the axial movement of the fixing part 211, thereby pressing the opening edge of the lip seal against the surface of the side panel 3 to form a sealing interface.

[0044] The annular flange 12 is coaxially mounted on the bottom surface of the bumper bracket 1. Its core function is not direct sealing, but rather forming a rigid mechanical contact between its bottom and the surface of the side panel 3 after assembly. This structure firstly provides a clear axial stop point for the bracket installation, preventing the lip seal from being permanently deformed and failing due to excessive compression of the bracket. Secondly, the annular flange 12 is located on the outer periphery of the lip seal, effectively preventing foreign objects such as mud, sand, and debris from directly impacting or covering the lip, protecting it from scratches and blockages by the external environment, thereby maintaining its elasticity and sealing function over a long period.

[0045] This utility model embodiment also discloses a bumper assembly, as shown in the attached drawing. Figure 8 As shown, it includes a bumper cover 4 and the automotive rear bumper mounting structure disclosed in the above embodiments; wherein, the bumper cover 4 is connected to the bumper bracket 1.

[0046] By integrating the rear bumper mounting structure, the bumper assembly inherits all the core advantages brought by the mounting structure while retaining the original functions of the bumper skin 4: that is, by integrating the design of the connector 21, the structure of the bumper bracket 1 and the body side panel 3 is simplified, ultimately achieving a reduction in overall weight, a reduction in manufacturing cost, and a simplification of the assembly process.

[0047] This utility model embodiment also discloses a vehicle, including a side panel 3 and a bumper assembly disclosed in the above embodiment, wherein the bumper assembly is connected to the side panel 3.

[0048] By adopting the aforementioned bumper assembly, the core advantages of the mounting structure are extended to the whole vehicle level, achieving optimization of vehicle weight and manufacturing costs. At the same time, thanks to the high connection reliability and excellent sealing performance brought by the mounting structure, the vehicle's production efficiency, overall corrosion resistance, and long-term reliability are improved.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rear bumper mounting structure for automobiles, characterized in that, It includes a bumper bracket (1) and a connecting assembly (2), the connecting assembly (2) including a connector (21); The connector (21) includes a fixing part (211) and a positioning part (212) that are connected to each other; The fixing part (211) is used to be fixedly installed in the connecting hole (31) of the side panel (3); The bumper bracket (1) has a mounting hole (11) for fitting around the outer periphery of the positioning part (212) and for fixed connection with the connector (21).

2. The automotive rear bumper mounting structure as described in claim 1, characterized in that: The connector (21) also includes a fastener (22). The positioning part (212) has a fastening hole (210) at one end away from the fixing part (211). The fastener (22) passes through the fastening hole (210) to fix the bumper bracket (1) to the side panel (3).

3. The automotive rear bumper mounting structure as described in claim 1, characterized in that: The connector (21) is made of an elastic material.

4. The automotive rear bumper mounting structure as described in claim 3, characterized in that: The fixing part (211) is interference-fitted with the connecting hole (31).

5. The automotive rear bumper mounting structure as described in claim 4, characterized in that: The fixing part (211) is provided with a buckle (2111) on the outside, and the buckle (2111) is used to engage with the edge of the connecting hole (31) on the side of the side panel (3) away from the bumper bracket (1).

6. The automotive rear bumper mounting structure as described in claim 1, characterized in that: The connector (21) has a sealing structure (213) at the connection between its fixing part (211) and positioning part (212) for sealing the connection hole (31).

7. The automotive rear bumper mounting structure as described in claim 6, characterized in that: The sealing structure (213) is a sealing gasket, which is used to seal the surface of the side panel (3) and the bottom surface of the bumper bracket (1).

8. The automotive rear bumper mounting structure as described in claim 6, characterized in that: The sealing structure (213) is a lip seal ring. The opening edge of the lip seal ring is used to seal and connect with the surface of the side panel (3). The bottom surface of the bumper bracket (1) is provided with an annular flange (12) coaxial with the mounting hole (11). The bottom of the annular flange (12) is used to abut against the surface of the side panel (3), and the annular flange (12) is located outside the lip seal ring.

9. A bumper assembly, characterized in that: It includes a bumper cover (4) and a rear bumper mounting structure for automobiles as described in any one of claims 1 to 8; wherein the bumper cover (4) is connected to the bumper bracket (1).

10. A vehicle, characterized in that: It includes a side panel (3) and a bumper assembly as described in claim 9, wherein the bumper assembly is connected to the side panel (3).

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