Rear floor front stiffening beam assembly
The modularly designed rear floor front reinforcement beam assembly, with its "convex" upper section structure and cross-welded longitudinal reinforcement columns, solves the problems of insufficient rigidity and inconvenient maintenance of traditional integrated reinforcement beams, achieving a higher reinforcement effect and greater maintenance convenience.
Patent Information
- Application Number
- CN202520367466.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-03-04
AI Technical Summary
Traditional integrated rear floor front reinforcement beams are difficult to adjust flexibly to meet stress requirements, resulting in easy deformation and fatigue damage of local body structures, high maintenance costs and inconvenience.
The modularly designed rear floor front reinforcement beam assembly includes components such as the main reinforcement beam, positioning seat, mounting parts, and front end plate of the reinforcement beam. It enhances strength through the "convex" upper parting structure, guide reinforcement ribs, and rib plates, and utilizes longitudinal reinforcement columns and reinforcement beams to cross-weld to form a stable triangular structure.
It improves the reinforcement effect and overall rigidity, reduces maintenance costs, and enhances the economy and convenience of vehicle maintenance.
Smart Images
Figure CN223672631U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to bottom plate reinforcing beam technical field especially relates to a front reinforcing beam assembly of rear floor. BACKGROUND
[0002] In the field of automobile manufacturing, the front reinforcing beam of the rear floor plays a key role in ensuring the strength and stability of the vehicle body. The traditional front reinforcing beam of the rear floor is mostly set in an integral manner. Although this structure maintains the integrity of the vehicle body to some extent, it has many drawbacks. Since the overall skin thickness is relatively fixed, it is difficult to adjust flexibly according to the stress requirements of different parts. When facing the stress generated by complex and variable driving conditions, it cannot provide sufficient and efficient reinforcement, resulting in problems such as deformation and fatigue damage of the local structure of the vehicle body. Moreover, once a part of the integral reinforcing beam is damaged, the entire reinforcing beam needs to be replaced during maintenance, which not only significantly increases the maintenance cost but also wastes a lot of time, reducing the maintenance convenience and use economy of the vehicle. With the continuous improvement of the requirements for vehicle safety, reliability and lightweight design in the automotive industry, the existing integral and fixed-thickness front reinforcing beam structure of the rear floor has been difficult to meet the development needs of the industry.
[0003] Therefore, it is necessary to invent a front reinforcing beam assembly of the rear floor. CONTENT OF THE UTILITY MODEL
[0004] To solve the above technical problems, the utility model provides a front reinforcing beam assembly of the rear floor, which comprises a main reinforcing beam, a positioning seat, a mounting piece, a reinforcing beam front end plate, a mounting hole, a positioning hole, a longitudinal reinforcing column, a reinforcing cross beam, a reinforcing beam rear end plate, a matching recessed surface and an intermediate positioning groove. The main reinforcing beam is provided with the required positioning hole. The positioning seat is fixedly installed on the upper part of both ends of the main reinforcing beam. The reinforcing beam front end plate is fixedly installed with the positioning seat through the mounting piece. The reinforcing beam front end plate is provided with a plurality of mounting holes. The longitudinal reinforcing column is connected with the main reinforcing beam and the reinforcing beam front end plate. The two positioning seats are connected through the reinforcing cross beam. The main reinforcing beam is fixedly connected with the reinforcing beam rear end plate. The reinforcing beam rear end plate is provided with a matching recessed surface and an intermediate positioning groove.
[0005] Preferably, the main reinforcing beam is in the shape of an upper part of a "convex" character. The inner side of the main reinforcing beam is provided with a guide reinforcing rib and a rib plate. The rib plate is arranged at the bending part of the main reinforcing beam.
[0006] Preferably, the main reinforcing beam is installed between the reinforcing beam front end plate and the reinforcing beam rear end plate. The reinforcing beam front end plate and the reinforcing beam rear end plate are arranged on the upper side and the lower side of the main reinforcing beam, respectively, and are arranged in a "Z" shape.
[0007] Preferably, the main reinforcing beam and the reinforcing beam front end plate have an area allowing the longitudinal reinforcing column and the reinforcing cross beam to be installed, and the reinforcing beam front end plate is fixed to the front floor and the bottom plate reinforcement through the mounting hole.
[0008] Preferably, the longitudinal reinforcing column and the reinforcing cross beam are arranged in a cross manner, and the intersection points of the two are welded together, and the longitudinal reinforcing column is arranged below the reinforcing cross beam.
[0009] Preferably, the matching recessed surface and the intermediate positioning groove on the reinforcing beam rear end plate are matched with the front end of the rear floor, and the reinforcing beam rear end plate is installed with the front end of the rear floor through the connecting piece.
[0010] Compared with the prior art, the utility model has the advantages of:
[0011] The rear floor front reinforcing beam assembly of the utility model has the advantages of the following: the main reinforcing beam adopts a "convex" upper part structure, and the inner side is provided with a guide reinforcing rib and a rib plate, so that the strength and rigidity of the main reinforcing beam are effectively enhanced, the main reinforcing beam can better cope with complex stress, and the overall reinforcing effect is greatly improved.
[0012] The main reinforcing beam, the reinforcing beam front end plate and the reinforcing beam rear end plate are arranged in a "Z" type distribution, a stable triangular structure is formed, and the overall rigidity of the reinforcing beam assembly is effectively improved. Meanwhile, the cross welding of the reinforcing cross beam and the longitudinal reinforcing column further enhances the stability of the structure.
[0013] Compared with the traditional integrated rear floor front reinforcing beam, the modular structure design of the utility model enables only the damaged part to be replaced when the part is damaged, instead of the whole part, so that the maintenance cost is significantly reduced, the maintenance economy and the use convenience of the vehicle are improved, and great convenience is brought to the automobile maintenance work. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the overall structure schematic view of the utility model.
[0015] Figure 2 It is the bottom structure schematic view of the utility model.
[0016] Figure 3 It is the side structure schematic view of the utility model.
[0017] In the drawings:
[0018] Main reinforcing beam 1, positioning seat 2, mounting piece 3, reinforcing beam front end plate 4, mounting hole 5, positioning hole 6, longitudinal reinforcing column 7, reinforcing cross beam 8, reinforcing beam rear end plate 9, matching concave surface 10, middle positioning groove 11. DETAILED DESCRIPTION
[0019] In order to enable personnel in the technical field to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.
[0020] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium; can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0021] As shown in the accompanying Figure 1 to the accompanying Figure 3 drawings:
[0022] The utility model provides a kind of rear floor front reinforcing beam assembly, including main reinforcing beam 1, locating seat 2, mounting piece 3, reinforcing beam front end plate 4, mounting hole 5, locating hole 6, longitudinal reinforcing column 7, reinforcing crossbeam 8, reinforcing beam rear end plate 9, matching recess surface 10 and intermediate locating groove 11, the main reinforcing beam 1 itself is provided with the locating hole 6 required to be installed, the upper end of main reinforcing beam 1 is fixedly installed with locating seat 2, the reinforcing beam front end plate 4 is fixedly installed together with locating seat 2 by mounting piece 3;Several mounting holes 5 required to be installed are formed in reinforcing beam front end plate 4;The longitudinal reinforcing column 7 is connected with main reinforcing beam 1 and reinforcing beam front end plate 4 respectively;Two locating seats 2 are connected by reinforcing crossbeam 8;The main reinforcing beam 1 is fixedly connected with reinforcing beam rear end plate 9, and the reinforcing beam rear end plate 9 is provided with matching recess surface 10 and intermediate locating groove 11.
[0023] Further, the main reinforcing beam 1 adopts a "convex" upper part structure, which can effectively improve the structural strength. The material is high-strength alloy steel, such as alloy steel with a yield strength of 500MPa-600MPa, to ensure that it is not easily deformed under high stress. The overall length of the main reinforcing beam 1 is determined according to the requirements of different vehicle models. On the inner side of the main reinforcing beam 1, a guide reinforcing rib is provided. The cross-sectional shape of the guide reinforcing rib is rectangular, with a height of 20-30mm and a width of 10-15mm. The guide reinforcing rib is made of the same high-strength alloy steel as the main reinforcing beam and is fixed to the inner side of the main reinforcing beam 1 by welding process. It is used to guide stress distribution and enhance the anti-deformation ability of the main reinforcing beam 1. At the same time, a rib plate is provided at the bending part of the main reinforcing beam 1. The rib plate is 4-6mm thick and made of high-strength alloy steel. Its shape is customized according to the angle of the bending part. It is tightly connected to the bending part of the main reinforcing beam by full welding, further strengthening the structural strength of the bending part and effectively dealing with complex stress.
[0024] Further, the main reinforcing beam 1 is installed between the reinforcing beam front end plate 4 and the reinforcing beam rear end plate 9. The reinforcing beam front end plate 4 and the reinforcing beam rear end plate 9 are arranged on the upper side and the lower side of the main reinforcing beam 1, respectively, and the three are arranged in a "Z" shape. The reinforcing beam front end plate 4 and the reinforcing beam rear end plate 9 are made of high-strength steel plate. This "Z" type layout design optimizes the stress distribution of the overall structure and enhances the stability of the connection between the rear floor front reinforcing beam assembly and other parts of the vehicle body. The length of the reinforcing beam front end plate 4 and the reinforcing beam rear end plate 9 is adapted to the main reinforcing beam 1.
[0025] Further, the area between the main reinforcing beam 1 and the reinforcing beam front end plate 4 is reserved for the installation of the longitudinal reinforcing column 7 and the reinforcing cross beam 8. The longitudinal reinforcing column 7 is made of high-strength carbon steel. The cross section of the reinforcing cross beam 8 is H-shaped or rectangular, and the material is also high-strength carbon steel. The longitudinal reinforcing column 7 and the reinforcing cross beam 8 are arranged in a cross manner, and their intersection points are firmly connected together by welding process, with the longitudinal reinforcing column 7 located below the reinforcing cross beam 8. This cross arrangement greatly enhances the structural strength and stability of the area. The reinforcing beam front end plate 4 is fixed to the front floor and the bottom plate reinforcement through the mounting holes 5, which are evenly distributed on the reinforcing beam front end plate 4.
[0026] Further, the reinforcing beam rear end plate 9 is provided with a matching recessed surface 10 and an intermediate positioning groove 11 for precise matching with the front end of the rear floor. The shape of the matching recessed surface 10 is matched with the protruding part of the front end of the rear floor to ensure close fitting during installation. The length of the intermediate positioning groove 11 is determined according to the size of the front end of the rear floor. The reinforcing beam rear end plate 9 is installed with the front end of the rear floor through bolts and other connecting components, with the bolt specification being M10-M12. The reinforcing beam rear end plate 9 is made of high-strength steel plate, and its size is adapted to the installation position of the front end of the rear floor.
[0027] The working principle is as follows: In the production process of the automobile rear floor front reinforcing beam assembly, the preparation of raw materials is the key starting link. High-strength alloy steel with a yield strength of 500MPa-600MPa is purchased, and the steel is cut according to the overall length of the main reinforcing beam 1 (generally between 1.2-1.5 meters) for making the main reinforcing beam; the guide reinforcing rib and the rib plate are also made of high-strength alloy steel, and the corresponding plates are cut according to the rectangular cross-sectional dimensions of the guide reinforcing rib (height 20-30mm, width 10-15mm) and the thickness of the rib plate (4-6mm). The reinforcing beam front end plate is made of high-strength steel plate with a thickness of 3-5mm, and the rear end plate is made of high-strength steel plate with a thickness of 4-6mm, which is cut according to the design length (the rear end plate is generally 0.8-1.0m, and the front end plate is adapted to it) and the width (according to the installation position requirements of the vehicle body, generally between 0.4-0.6m). The longitudinal reinforcing column 7 is made of high-strength carbon steel round steel pipe with a diameter of 30-40mm, which is cut according to the installation area height (generally 0.3-0.4m), and the reinforcing cross beam 8 is made of high-strength carbon steel, which is cut according to the H-shaped cross-sectional dimensions (height 40-60mm, flange width 20-40mm, web thickness 3-4mm) and the installation area width (generally 0.6-0.8m), and the positioning seat 2, the mounting component 3, the bolt (specification M10-M12) and other standard components are prepared.
[0028] In the component processing stage, the cut high-strength alloy steel is processed into a "convex" upper part structure as a main reinforcing beam, and a guide reinforcing rib is installed on the inner side through a welding process to ensure firm welding and uniform welds, the rib plate shape is customized according to the angle of the bending part of the main reinforcing beam 1 and is fully welded at the bending part, and a positioning seat 2 is welded on the upper part of both ends of the main reinforcing beam 1 and a positioning hole 6 is formed. On the cut reinforcing beam front end plate 4, the installation hole 5 with a diameter of 10-12 mm is uniformly drilled according to the design requirements, and the matching recessed surface 10 (with a depth of 15-20 mm) and the middle positioning groove 11 (with a width of 20-30 mm and a length of 0.2-0.3 m) are processed on the reinforcing beam rear end plate 9 according to the size and shape of the front end of the rear floor.
[0029] In the component assembly stage, the reinforcing beam front end plate 4 is fixedly installed with the positioning seat 2 at both ends of the main reinforcing beam 1 by using the mounting piece 3, the longitudinal reinforcing column 7 and the reinforcing cross beam 8 are cross-placed in the reserved area between the main reinforcing beam 1 and the reinforcing beam front end plate 4, and the cross points are aligned, the cross points are firmly welded through a welding process, and it is ensured that the longitudinal reinforcing column 7 is located below the reinforcing cross beam 8, and the main reinforcing beam 1 is fixedly connected with the reinforcing beam rear end plate 9 (by a detachable connection mode such as a bolt). After the assembly is completed, the rear floor front reinforcing beam assembly is transported to the vehicle body installation position, the mounting hole 5 on the reinforcing beam front end plate 4 is bolted with the front floor and the bottom plate to be fixedly reinforced, the matching recessed surface 10 and the middle positioning groove 11 on the reinforcing beam rear end plate 9 are accurately matched with the front end of the rear floor, and the reinforcing beam rear end plate 9 is installed with the front end of the rear floor by using a bolt (with a specification of M10-M12).
[0030] Finally, quality detection is performed, appearance detection is performed to check whether there is a missing weld, a false weld, a crack, a deformation and other defects on the welding part of each component, size detection is performed by using a measuring tool to measure the size of each component to ensure that the design requirements are met, such as the length of the main reinforcing beam, the length and width of the reinforcing beam front end plate and the rear end plate, the position and diameter of the positioning hole and the installation hole, and strength detection is performed by simulating the actual stress condition to test the strength of the rear floor front reinforcing beam assembly to ensure that it can withstand the stress required by the design.
[0031] If a similar technical scheme is designed by using the technical scheme of the utility model or by a person skilled in the art under the inspiration of the technical scheme of the utility model, and the above technical effects are achieved, it is within the protection scope of the utility model.
Claims
1. A rear floor front reinforcement beam assembly characterized by, The utility model provides a kind of reinforced beam, including main reinforced beam (1), positioning seat (2), mounting piece (3), reinforced beam front end plate (4), mounting hole (5), positioning hole (6), longitudinal reinforcing column (7), reinforcing crossbeam (8), reinforced beam rear end plate (9), matching recessed surface (10) and intermediate positioning slot (11), the positioning hole (6) required is set to the main reinforced beam (1) itself, positioning seat (2) is fixedly installed on the top of both ends of main reinforced beam (1), and the reinforced beam front end plate (4) is fixedly installed together with positioning seat (2) by mounting piece (3);The reinforced beam front end plate (4) is set with the mounting hole (5) required on it;The longitudinal reinforcing column (7) is connected with main reinforced beam (1) and reinforced beam front end plate (4) respectively;Two positioning seats (2) are connected by reinforcing crossbeam (8);The main reinforced beam (1) is fixedly connected with reinforced beam rear end plate (9), and the reinforced beam rear end plate (9) is provided with matching recessed surface (10) and intermediate positioning slot (11).
2. A rear floor front reinforcement beam assembly as in claim 1, wherein: The main reinforced beam (1) is "convex" upper part structure, the inner side of the main reinforced beam (1) is provided with guide reinforcing rib and rib plate, and the rib plate is arranged at the bending portion of the main reinforced beam (1).
3. A rear floor front reinforcement beam assembly as in claim 2, wherein: The main reinforced beam (1) is arranged between the reinforced beam front end plate (4) and the reinforced beam rear end plate (9), and the reinforced beam front end plate (4) and the reinforced beam rear end plate (9) are oppositely arranged on the top side and the lower side of the main reinforced beam (1) and are arranged in "Z" type.
4. A rear floor front reinforcement beam assembly as in claim 3, wherein: The main reinforced beam (1) and the reinforced beam front end plate (4) have an area allowing the longitudinal reinforcing column (7) and the reinforcing crossbeam (8) to be installed, and the reinforced beam front end plate (4) is fixed with the front floor and the bottom plate by the mounting hole (5).
5. A rear floor front reinforcement beam assembly as in claim 4, wherein: The longitudinal reinforcing column (7) and the reinforcing crossbeam (8) are arranged in cross, and the intersection points of the longitudinal reinforcing column (7) and the reinforcing crossbeam (8) are welded together, and the longitudinal reinforcing column (7) is located below the reinforcing crossbeam (8).
6. A rear floor front reinforcement beam assembly as in claim 3, wherein: The matching recessed surface (10) and the intermediate positioning slot (11) on the reinforced beam rear end plate (9) are matched with the front end of the rear floor, and the reinforced beam rear end plate (9) is installed with the front end of the rear floor by the connecting piece.