Rear longitudinal beam structure and vehicle

Abstract

The utility model relates to a rear longitudinal beam structure and a vehicle, and belongs to the technical field of rear longitudinal beam structures, the rear longitudinal beam structure comprises a rear longitudinal beam body, a rear longitudinal beam end plate and a connecting piece; a containing cavity is defined by the rear longitudinal beam body; the rear longitudinal beam end plate is arranged on one side of the rear longitudinal beam body and covers the accommodating cavity; at least part of the connecting piece is arranged in the containing cavity in a penetrating mode and connected with the rear longitudinal beam body; the side, away from the containing cavity, of the connecting piece is connected with the rear longitudinal beam end plate. The overall thickness of the connecting piece is small, the occupied space is small, and wiring harnesses and pipelines can be conveniently arranged. In addition, by arranging the connecting piece, the connecting stability of the rear longitudinal beam body and the rear longitudinal beam end plate can be enhanced, and then the overall structural strength of the rear longitudinal beam structure is improved. When low-speed collision occurs at the rear end of the vehicle, deformation caused by insufficient structural strength of the rear longitudinal beam can be effectively avoided, the maintenance cost is reduced, and the safety performance of the vehicle is improved.

Description

Technical Field

[0001] This application relates to the field of rear longitudinal beam structure technology, and more particularly to a rear longitudinal beam structure and vehicle. Background Technology

[0002] With the application and development of intelligent and connected technologies in the automotive industry, new demands have been placed on how to effectively reduce collision speeds in urban road traffic accidents, how to effectively enhance vehicle structural strength in low-speed collisions, and how to ensure that high-value components such as lights, sensors, radars, and cameras maintain normal function, thereby reducing vehicle maintenance costs. Currently, the rear longitudinal beam structure of vehicles suffers from insufficient strength, making it prone to localized deformation during collisions. Utility Model Content

[0003] This application provides a rear longitudinal beam structure and vehicle to at least partially solve the technical problem of insufficient strength of the rear longitudinal beam structure and easy local deformation of the rear longitudinal beam during a collision.

[0004] To achieve the above objectives, according to a first aspect of this application, this application provides a rear longitudinal beam structure, comprising:

[0005] The rear longitudinal beam body encloses and forms a receiving cavity;

[0006] The rear longitudinal beam end plate is located on one side of the rear longitudinal beam body and covers the receiving cavity;

[0007] The connector is at least partially inserted into the receiving cavity and connected to the rear longitudinal beam body; the side of the connector away from the receiving cavity is connected to the end plate of the rear longitudinal beam.

[0008] Optionally, the connector includes a body portion and a first flange portion. The body portion passes through the receiving cavity and is connected to the rear longitudinal beam body. The first flange portion is respectively attached to the rear longitudinal beam body and the rear longitudinal beam end plate.

[0009] Optionally, the rear longitudinal beam body includes a first longitudinal beam and a second longitudinal beam, the first longitudinal beam and the second longitudinal beam are connected and enclose a receiving cavity, and the body part is connected to the first longitudinal beam and the second longitudinal beam respectively.

[0010] Optionally, the second longitudinal beam is provided with a folded edge, which fits into the first flanged edge.

[0011] Optionally, the folded edge has a notch;

[0012] The connector includes a plurality of first flanges, which are spaced apart on the outer periphery of the main body.

[0013] The connector includes a second flange portion, which is disposed between two adjacent first flange portions;

[0014] Among them, along the arrangement direction of the rear longitudinal beam body and the rear longitudinal beam end plate, the orthographic projection of the second flange and the orthographic projection of the first flange at least partially cover the gap.

[0015] Optionally, the connector includes a body and a fixing part, the fixing part is connected to the body, the fixing part is fitted to the rear longitudinal beam end plate, and the fixing part has a first mounting hole;

[0016] The rear longitudinal beam end plate has a second mounting hole corresponding to the first mounting hole;

[0017] The rear longitudinal beam structure includes fasteners, which pass through the first mounting hole and the second mounting hole and are respectively connected to the rear longitudinal beam end plate and the fixing part.

[0018] Optionally, the connector includes a guide portion located between the fixing portion and the body portion and connected to the fixing portion and the body portion respectively.

[0019] Optionally, the rear longitudinal beam structure includes multiple weld points, at least some of which connect the rear longitudinal beam body and the connector, at least some of which connect the rear longitudinal beam end plate and the connector, and at least some of which connect the rear longitudinal beam body, the rear longitudinal beam end plate and the connector.

[0020] Optionally, the rear longitudinal beam body is provided with reinforcing ribs.

[0021] According to a second aspect of this application, an embodiment of this application provides a vehicle including the aforementioned rear longitudinal beam structure.

[0022] This application provides a rear longitudinal beam structure, including a rear longitudinal beam body, a rear longitudinal beam end plate, and a connector. The rear longitudinal beam body encloses a receiving cavity. The rear longitudinal beam end plate is disposed on one side of the rear longitudinal beam body and covers the receiving cavity. The connector at least partially passes through the receiving cavity and is connected to the rear longitudinal beam body. The side of the connector away from the receiving cavity is connected to the rear longitudinal beam end plate. The connector has a thin overall thickness, occupies less space, and facilitates the arrangement of wiring harnesses and conduits. Furthermore, by providing the connector, the embodiment of this application can enhance the connection stability between the rear longitudinal beam body and the rear longitudinal beam end plate, thereby improving the overall structural strength of the rear longitudinal beam structure. In the event of a low-speed collision at the rear of the vehicle, it can effectively prevent deformation due to insufficient structural strength of the rear longitudinal beam, reduce maintenance costs, and improve vehicle safety performance.

[0023] The vehicle in this application embodiment includes the aforementioned rear longitudinal beam structure, and therefore the vehicle can have all the technical features and beneficial effects of the aforementioned rear longitudinal beam structure, which will not be repeated here.

[0024] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0027] Figure 1 This is a schematic diagram of the rear longitudinal beam structure provided in an exemplary embodiment of this application;

[0028] Figure 2 This is a structural schematic diagram of the rear longitudinal beam structure provided in another exemplary embodiment of this application;

[0029] Figure 3 This is an exploded view of the rear longitudinal beam structure provided in an exemplary embodiment of this application;

[0030] Figure 4 This is a partial structural schematic diagram of the rear longitudinal beam structure provided in an exemplary embodiment of this application;

[0031] Figure 5 This is a schematic diagram of the structure of the first longitudinal beam provided in an exemplary embodiment of this application;

[0032] Figure 6 This is a schematic diagram of the structure of the connector provided in an exemplary embodiment of this application;

[0033] Figure 7 This is a schematic diagram of the structure of a connector provided in another exemplary embodiment of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Rear longitudinal beam body; 2. Rear longitudinal beam end plate; 3. Connector; 4. Weld point; 10. Receiving cavity; 11. First longitudinal beam; 12. Second longitudinal beam; 20. Second mounting hole; 30. Body part; 31. First flange part; 32. Second flange part; 33. Fixing part; 34. Guide part; 110. Reinforcing rib; 120. Folded edge part; 121. Notch; 330. First mounting hole. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0037] The applicant notes that with the application and development of intelligent and connected technologies in the vehicle industry, new requirements have been placed on how to effectively reduce collision speeds in urban road traffic accidents, how to effectively enhance vehicle structural strength in low-speed collisions, and how to ensure that high-value components such as lights, sensors, radar, and cameras maintain normal function, thereby reducing vehicle repair costs. C-IASI (China Insurance Automotive Safety Index) conducts crashworthiness and repair economy tests and evaluations focusing on "vehicle damage" and "personal injury" in traffic accidents. The "C-IASI Crashworthiness and Repair Economy Index - Low-Speed ​​Collision Repair Test Evaluation Procedure (2023 Edition)" proposes a rear-end 15km / h low-speed structural collision condition to address "reducing vehicle damage," aiming to urge companies to pay attention to the crashworthiness and repairability of vehicle structures after rear-end collisions. In the rear-end 15km / h low-speed structural collision condition, the first priority is to ensure that the rear longitudinal beams and rear floor do not deform, ensuring the strength of the rear structure. Secondly, it aims to reduce the damage to high-value parts such as the tailgate and lights, thereby reducing repair costs for consumers. Therefore, how to design the rear longitudinal beam structure to ensure the crashworthiness and maintainability of the vehicle's rear structure has become a key focus in vehicle body design.

[0038] In view of this, this application provides a rear longitudinal beam structure, including a rear longitudinal beam body 1, a rear longitudinal beam end plate 2, and a connector 3; the rear longitudinal beam body 1 encloses a receiving cavity 10; the rear longitudinal beam end plate 2 is disposed on one side of the rear longitudinal beam body 1 and covers the receiving cavity 10; the connector 3 is at least partially inserted into the receiving cavity 10 and connected to the rear longitudinal beam body 1; the side of the connector 3 away from the receiving cavity 10 is connected to the rear longitudinal beam end plate 2. The connector 3 has a relatively thin overall thickness, occupies less space, and facilitates the arrangement of wiring harnesses and conduits. In addition, by providing the connector 3, the connection stability between the rear longitudinal beam body 1 and the rear longitudinal beam end plate 2 can be enhanced, thereby improving the overall structural strength of the rear longitudinal beam structure. In the event of a low-speed collision at the rear of the vehicle, deformation due to insufficient structural strength of the rear longitudinal beam can be effectively avoided, reducing maintenance costs and improving vehicle safety performance.

[0039] The rear longitudinal beam structure and vehicle of this application will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementations can be combined with each other.

[0040] Figure 1 This is a schematic diagram of the rear longitudinal beam structure provided in an exemplary embodiment of this application; Figure 2 This is a structural schematic diagram of the rear longitudinal beam structure provided in another exemplary embodiment of this application; Figure 3 This is an exploded view of the rear longitudinal beam structure provided in an exemplary embodiment of this application; Figure 4 This is a partial structural schematic diagram of the rear longitudinal beam structure provided in an exemplary embodiment of this application; Figure 5 This is a schematic diagram of the structure of the first longitudinal beam 11 provided in an exemplary embodiment of this application; Figure 6 This is a schematic diagram of the structure of the connector 3 provided in an exemplary embodiment of this application; Figure 7 This is a schematic diagram of the structure of the connector 3 provided in another exemplary embodiment of this application.

[0041] Reference Figure 1 This application provides a rear longitudinal beam structure, including a rear longitudinal beam body 1, a rear longitudinal beam end plate 2, and a connector 3. The rear longitudinal beam body 1 encloses a receiving cavity 10. The rear longitudinal beam end plate 2 is disposed on one side of the rear longitudinal beam body 1 and covers the receiving cavity 10. The connector 3 is at least partially inserted into the receiving cavity 10 and connected to the rear longitudinal beam body 1. The side of the connector 3 away from the receiving cavity 10 is connected to the rear longitudinal beam end plate 2. The connector 3 has a thin overall thickness, occupies less space, and facilitates the arrangement of wiring harnesses and conduits. Furthermore, by providing the connector 3, the connection stability between the rear longitudinal beam body 1 and the rear longitudinal beam end plate 2 can be enhanced, thereby improving the overall structural strength of the rear longitudinal beam structure. In the event of a low-speed collision at the rear of the vehicle, deformation due to insufficient structural strength of the rear longitudinal beam can be effectively avoided, reducing maintenance costs and improving vehicle safety performance.

[0042] In some embodiments, refer to Figure 3 The connector 3 includes a body portion 30 and a first flange portion 31. The body portion 30 passes through the receiving cavity 10 and connects to the rear longitudinal beam body 1. The first flange portion 31 is respectively fitted to the rear longitudinal beam body 1 and the rear longitudinal beam end plate 2. The connector 3 is a sheet metal structure, which can effectively improve the strength of the rear longitudinal beam structure. Compared with setting multiple rear longitudinal beam end plates 2 at one end of the rear longitudinal beam body 1, this application improves the structural strength of the rear longitudinal beam body 1 by setting the body portion 30 to pass through the receiving cavity 10, and improves the connection stability between the rear longitudinal beam body 1 and the rear longitudinal beam end plate 2 by setting the first flange portion 31. Thus, in the event of a low-speed collision at the rear of the vehicle, it can effectively avoid deformation due to insufficient strength of the rear longitudinal beam body 1, reduce maintenance costs, and improve the safety performance of the vehicle. In addition, the overall thickness of the first flange portion 31 is relatively thin, occupying less space, which facilitates the layout of wiring harnesses and pipes.

[0043] In some embodiments, refer to Figure 6The connector 3 is an integral structure, and the main body 30 is a partially enclosed cylindrical structure with an opening, which simplifies the process and improves production efficiency.

[0044] In some embodiments, refer to Figure 1 and Figure 2 The rear longitudinal beam body 1 includes a first longitudinal beam 11 and a second longitudinal beam 12. The first longitudinal beam 11 and the second longitudinal beam 12 are connected and enclose a receiving cavity 10. A connecting member 3 is connected to the first longitudinal beam 11 and the second longitudinal beam 12. The first longitudinal beam 11 is the outer plate of the rear longitudinal beam, and the second longitudinal beam 12 is the inner plate of the rear longitudinal beam. The first longitudinal beam 11 and the second longitudinal beam 12, when connected and enclosed to form the receiving cavity 10, can work in conjunction with the connecting member 3 to enhance the overall structural strength of the rear longitudinal beam structure, preventing deformation during low-speed rear-end collisions and reducing maintenance costs.

[0045] In some embodiments, the second longitudinal beam 12 is provided with a folded edge 120, which fits against the first flanged edge 31. In embodiments of this application, refer to... Figure 3 and Figure 5 The first longitudinal beam 11 is the outer plate of the rear longitudinal beam, and the second longitudinal beam 12 is the inner plate of the rear longitudinal beam. The first longitudinal beam 11 does not have a folded edge 120, but the second longitudinal beam 12 does. It is understandable that if the first longitudinal beam 11 had a folded edge 120, the folded edge would easily become a stress concentration point during a collision, leading to premature deformation. By providing a folded edge 120 in the second longitudinal beam 12, the contact area between the rear longitudinal beam body 1 and the connecting member 3 can be increased, improving the connection stability during subsequent welding of the rear longitudinal beam body 1 and the connecting member 3. Furthermore, it can prevent the first longitudinal beam 11 from being compressed and deformed, effectively protecting the overall strength of the rear longitudinal beam structure.

[0046] In some embodiments, refer to Figure 3The folded edge 120 has a notch 121; the connector 3 includes a plurality of first flanges 31, which are spaced apart on the outer periphery of the body 30; the connector 3 includes a second flange 32, which is disposed between two adjacent first flanges 31; wherein, along the arrangement direction of the rear longitudinal beam body 1 and the rear longitudinal beam end plate 2, at least part of the orthographic projection of the second flange 32 and the orthographic projection of the first flange 31 covers the notch 121. The folded edge 120 is provided with a notch 121, which is located at a corner, to prevent the flange of the connector 3 located at the corner from pressing against the folded edge 120 and causing deformation of the folded edge 120, thereby ensuring the overall strength of the rear longitudinal beam structure. The second flange 32 can be configured as an arc-shaped flange, which is positioned corresponding to the notch 121. By providing a second flange 32 and at least a portion of the first flange 31 to cover the notch 121, the sealing and waterproof performance of the rear longitudinal beam structure can be guaranteed, preventing liquids, dust and other impurities from outside the vehicle from seeping in.

[0047] In some embodiments, refer to Figure 3 The connector 3 includes a body part 30 and a fixing part 33. The fixing part 33 is connected to the body part 30 and fits against the rear longitudinal beam end plate 2. The fixing part 33 has a first mounting hole 330. The rear longitudinal beam end plate 2 has a second mounting hole 20 corresponding to the first mounting hole 330. The rear longitudinal beam structure includes fasteners (not shown). The fasteners pass through the first mounting hole 330 and the second mounting hole 20 and are respectively connected to the rear longitudinal beam end plate 2 and the fixing part 33. The fasteners can be bolts. Threaded holes are tapped into the sidewalls of the first mounting hole 330 and the second mounting hole 20 to install the bolts. This configuration increases the connection strength between the rear longitudinal beam end plate 2 and the fixing part 33. Furthermore, an energy-absorbing box is provided on the side of the rear longitudinal beam end away from the rear longitudinal beam body 1. The energy-absorbing box can be fixed to the rear longitudinal beam end plate 2 with bolts. During a vehicle collision, after the energy-absorbing box absorbs energy through impact compression, it can abut against the rear longitudinal beam end plate 2.

[0048] In some embodiments, refer to Figure 7 The connector 3 includes a guide portion 34, which is located between the fixing portion 33 and the body portion 30 and is connected to both the fixing portion 33 and the body portion 30 respectively. The guide portion 34 can be a chamfer with a radius of 10mm. This configuration serves two purposes: firstly, the guide portion 34 can guide the installation; secondly, the guide portion 34 can protect the connection between the rear longitudinal beam body 1 and the rear longitudinal beam end plate 2, preventing structural deformation caused by stress concentration.

[0049] In some embodiments, refer to Figure 1 and Figure 2The rear longitudinal beam structure includes multiple weld points 4. At least some of the weld points 4 connect the rear longitudinal beam body 1 and the connector 3, at least some of the weld points 4 connect the rear longitudinal beam end plate 2 and the connector 3, and at least some of the weld points 4 connect the rear longitudinal beam body 1, the rear longitudinal beam end plate 2, and the connector 3. It can be understood that at least some of the weld points 4 are double-layer weld points 4, and at least some of the weld points 4 are triple-layer weld points 4. Double-layer weld points 4 can be used to weld the body portion 30 of the rear longitudinal beam body 1 and the connector 3, or to weld the first flange portion 31 and the rear longitudinal beam end plate 2. Triple-layer weld points 4 can be used to weld the folded edge portion 120 of the rear longitudinal beam body 1, the first flange portion 31 of the connector 3, and the rear longitudinal beam end plate 2. By spot welding the rear longitudinal beam body 1, the rear longitudinal beam end plate 2, and the connector 3, the connection process is simple, cost-effective, and can effectively improve the overall connection stability of the rear longitudinal beam structure.

[0050] In some embodiments, refer to Figure 4 and Figure 5 The rear longitudinal beam body 1 is provided with reinforcing ribs 110. The first longitudinal beam 11 is the outer plate of the rear longitudinal beam, and the second longitudinal beam 12 is the inner plate of the rear longitudinal beam. In this embodiment of the application, by providing reinforcing ribs 110 on the first longitudinal beam 11, the overall strength of the rear longitudinal beam structure is further improved, and structural deformation of the first longitudinal beam 11 is avoided during low-speed collisions at the rear of the vehicle.

[0051] In some embodiments, the rear longitudinal beam body 1, the connecting piece 3, and the rear longitudinal beam end plate 2 are sheet metal structures, which have a simple manufacturing process.

[0052] In some embodiments, the connector 3 may also be provided with a rib structure to increase the structural strength of the connector 3.

[0053] In some embodiments, along the arrangement direction of the rear longitudinal beam body 1 and the rear longitudinal beam end plate 2, the size of the body portion 30 of the connector 3 is not less than 50mm, which can effectively improve the overall strength of the rear longitudinal beam structure. When a low-speed collision occurs at the rear of the vehicle, it can effectively prevent deformation caused by insufficient strength of the rear longitudinal beam structure, reduce maintenance costs, and improve the safety performance of the vehicle.

[0054] This application provides a vehicle including the aforementioned rear longitudinal beam structure, and therefore the vehicle can have all the technical features and beneficial effects of the aforementioned rear longitudinal beam structure, which will not be repeated here.

[0055] In the description of this application, 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0056] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0057] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0058] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A rear longitudinal beam structure, characterized in that, include: The rear longitudinal beam body encloses and forms a receiving cavity; The rear longitudinal beam end plate is disposed on one side of the rear longitudinal beam body and covers the receiving cavity; A connector, at least partially inserted into the receiving cavity and connected to the rear longitudinal beam body; the side of the connector away from the receiving cavity is connected to the end plate of the rear longitudinal beam.

2. The rear longitudinal beam structure according to claim 1, characterized in that, The connector includes a body portion and a first flange portion. The body portion passes through the receiving cavity and is connected to the rear longitudinal beam body. The first flange portion is respectively attached to the rear longitudinal beam body and the rear longitudinal beam end plate.

3. The rear longitudinal beam structure according to claim 2, characterized in that, The rear longitudinal beam body includes a first longitudinal beam and a second longitudinal beam. The first longitudinal beam and the second longitudinal beam are connected and enclose the receiving cavity. The body part is connected to the first longitudinal beam and the second longitudinal beam respectively.

4. The rear longitudinal beam structure according to claim 3, characterized in that, The second longitudinal beam is provided with a folded edge, which is fitted to the first flange.

5. The rear longitudinal beam structure according to claim 4, characterized in that, The folded edge has a notch; The connector includes a plurality of first flange portions, which are spaced apart on the outer periphery of the main body portion; The connector includes a second flange portion, which is disposed between two adjacent first flange portions; Wherein, along the arrangement direction of the rear longitudinal beam body and the rear longitudinal beam end plate, at least part of the orthographic projection of the second flange portion and the orthographic projection of the first flange portion cover the notch.

6. The rear longitudinal beam structure according to claim 1, characterized in that, The connector includes a body and a fixing part. The fixing part is connected to the body and fits against the end plate of the rear longitudinal beam. The fixing part has a first mounting hole. The rear longitudinal beam end plate has a second mounting hole corresponding to the first mounting hole; The rear longitudinal beam structure includes fasteners, which pass through the first mounting hole and the second mounting hole and are respectively connected to the rear longitudinal beam end plate and the fixing part.

7. The rear longitudinal beam structure according to claim 6, characterized in that, The connector includes a guide portion, which is located between the fixing portion and the body portion and is connected to both the fixing portion and the body portion respectively.

8. The rear longitudinal beam structure according to claim 1, characterized in that, The rear longitudinal beam structure includes multiple weld points, at least some of which connect the rear longitudinal beam body and the connector, at least some of which connect the rear longitudinal beam end plate and the connector, and at least some of which connect the rear longitudinal beam body, the rear longitudinal beam end plate, and the connector.

9. The rear longitudinal beam structure according to claim 1, characterized in that, The rear longitudinal beam body is provided with reinforcing ribs.

10. A vehicle, characterized in that, Includes the rear longitudinal beam structure as described in any one of claims 1 to 9.

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