Rear floor reinforcing structure, rear floor assembly and automobile
By using one rear floor rear beam and two reinforcement beams in the rear floor reinforcement structure, replacing multiple existing parts and improving the spare tire pit mode, the problem of not conducive to lightweighting of the vehicle body and increasing welding difficulty in the prior art is solved. , achieving more efficient structural strengthening and cost reduction.
Patent Information
- Application Number
- CN202420497841.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-03-14
AI Technical Summary
The rear floor reinforcement structure in the prior art adopts two rear floor rear cross beams and a reinforced longitudinal beam at the spare tire pit, which is not conducive to the lightweight design of the vehicle body and increases welding difficulty and cost.
A rear cross beam, left reinforcement beam and right reinforcement beam are adopted to form a narrow U-shaped structure at the opening, instead of multiple parts in the prior art, and the arc and straight beam parts of the reinforcement beam are prepared with the rear floor. The tire pit panel and the middle beam are connected to improve the maximum displacement point of the mode frequency of the spare tire pit.
While ensuring the torsional stiffness of the rear floor assembly skeleton, the number of parts is reduced, the body is lighter, and the welding difficulty and cost are reduced.
Smart Images
Figure CN222310741U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobiles, and more specifically relates to a rear floor reinforcement structure, a rear floor assembly and an automobile. Background Art
[0002] The rear floor of a car is a large-area thin sheet metal part with low relative structural rigidity. It is easy to produce the excitation frequencies of various vibration sources, resulting in hollow drum noise. In addition, the spare tire is installed on it, which places high requirements on its strength. Therefore, how to reasonably avoid the excitation frequencies of various vibration sources is one of the key technologies in the design of the body structure.
[0003] The rear floor of the car is connected to the rear suspension of the chassis through the rear floor longitudinal beam. Various vibrations during driving are directly transmitted to the rear floor and the rear floor longitudinal beam. At the same time, the rear cross beam of the rear floor has a great influence on the torsional stiffness of the car body. In the prior art, in order to improve the torsional stiffness of the rear floor frame assembly and the mode of the spare tire pit on the rear floor, the rear cross beam of the rear floor often adopts a double cross beam, and 1-2 reinforcing longitudinal beams are added at the spare tire pit. This structure is not conducive to lightweighting of the car body, and increases the difficulty and cost of the welding process. Utility Model Content
[0004] The purpose of the utility model is to provide a rear floor reinforcement structure, a rear floor assembly and a car in view of the deficiencies in the prior art, so as to solve the problem that the rear floor reinforcement structure in the prior art adopts two rear cross beams of the rear floor and a reinforcement longitudinal beam is arranged at the spare tire pit, which is not conducive to the lightweight design of the car body and increases the difficulty and cost of welding.
[0005] In order to achieve the above object, the utility model provides a rear floor reinforcement structure, comprising:
[0006] rear floor rear cross member;
[0007] A left reinforcing beam and a right reinforcing beam, wherein the left reinforcing beam and the right reinforcing beam respectively include an arc portion and a straight beam portion, one end of the arc portion is integrally connected to one end of the straight beam portion, and the other end of the arc portion is connected to the rear cross beam of the rear floor, and the left reinforcing beam and the right reinforcing beam are connected to the rear cross beam of the rear floor to form a U-shaped structure with a narrowed opening.
[0008] Optionally, the rear floor rear cross beam includes a rear cross beam body and a left connecting plate and a right connecting plate respectively arranged at two ends of the rear cross beam body.
[0009] Optionally, the left reinforcing beam and the right reinforcing beam are connected to the left connecting plate and the right connecting plate respectively.
[0010] Optionally, the cross-sections of the rear floor rear cross beam, the left reinforcing beam and the right reinforcing beam are all in the shape of a "X".
[0011] Optionally, the arc portion is a quarter circle.
[0012] Optionally, the rear cross beam of the rear floor, the left reinforcing beam and the right reinforcing beam are all made of steel plates.
[0013] The utility model also provides a rear floor assembly, comprising:
[0014] two rear floor rails;
[0015] a rear floor connected to the two rear floor longitudinal beams;
[0016] The rear floor reinforcement structure described above, wherein the rear floor rear cross beam, the left reinforcement beam and the right reinforcement beam of the rear floor reinforcement structure are all connected to the lower side of the rear floor.
[0017] Optionally, two ends of the rear cross beam of the rear floor are respectively connected to the two rear floor longitudinal beams.
[0018] Optionally, one end of the two rear floor longitudinal beams is connected to a rear floor middle cross beam, and the other ends of the straight beam portions of the left reinforcing beam and the right reinforcing beam are connected to the rear floor middle cross beam.
[0019] Optionally, the rear floor includes a rear floor spare tire well panel, one end of which is connected to the rear floor middle cross beam, a spare tire well is arranged on the rear floor spare tire well panel, and the arc portions of the left reinforcing beam and the right reinforcing beam are arranged along the outer circumference of the spare tire well.
[0020] The utility model also provides a car, comprising the above-mentioned rear floor assembly.
[0021] The utility model provides a rear floor reinforcement structure, a rear floor assembly and a car, and its beneficial effects are: the rear floor reinforcement structure replaces two rear floor rear cross beams, left spare tire pit reinforcement beam, right spare tire pit reinforcement beam, spare tire pit left front support plate and spare tire pit right front support plate in the prior art by a rear floor rear cross beam, a left reinforcement beam and a right reinforcement beam, and can reinforce the rear floor spare tire pit panel on the rear floor by the arc portion of the left reinforcement beam and the right reinforcement beam, and is connected to the rear floor middle cross beam by a straight beam portion, and the arc portion passes through the maximum displacement point of the modal frequency of the spare tire pit on the rear floor spare tire pit panel. This rear floor reinforcement structure can improve the mode of the spare tire pit on the rear floor spare tire pit panel, reduce the number of parts while ensuring the torsional stiffness of the skeleton of the rear floor assembly, and is conducive to achieving lightweight vehicle body.
[0022] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.
[0024] Figure 1 A schematic diagram of a rear floor reinforcement structure in the prior art is shown.
[0025] Figure 2 A schematic diagram of a rear floor assembly in the prior art is shown.
[0026] Figure 3 A schematic diagram of a rear floor reinforcement structure according to an embodiment of the utility model is shown.
[0027] Figure 4 A schematic diagram of a rear floor assembly according to an embodiment of the utility model is shown.
[0028] Description of reference numerals:
[0029] 1. Rear cross beam of rear floor; 2. Left spare tire pit reinforcement beam; 3. Right spare tire pit reinforcement beam; 4. Left front support plate of spare tire pit; 5. Right front support plate of spare tire pit; 6. Left connecting plate; 7. Right connecting plate; 8. Rear floor longitudinal beam; 9. Arc part; 10. Straight beam part; 11. Middle cross beam of rear floor; 12. Rear floor spare tire pit panel. DETAILED DESCRIPTION
[0030] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.
[0031] like Figure 1 and Figure 2 As shown, a rear floor assembly with a rear floor reinforcement structure in the prior art includes two rear floor rear cross beams 1, a left spare tire pit reinforcement beam 2, a right spare tire pit reinforcement beam 3, a spare tire pit left front support plate 4 and a spare tire pit right front support plate 5, one of the rear floor rear cross beams 1 is connected with the left spare tire pit reinforcement beam 2 and the right spare tire pit reinforcement beam 3, the other rear floor rear cross beam 1 is connected to the rear floor middle cross beam 11 through the spare tire pit left front support plate 4 and the spare tire pit right front support plate 5, the two ends of the two rear floor rear cross beams 1 are respectively connected to the rear shock absorber spring mounting seats of the two rear floor longitudinal beams 8 through the left connecting plate 6 and the right connecting plate 7, there are a total of 10 parts, and all the parts are welded to the rear floor, which is not conducive to lightweight vehicle body, and increases the difficulty and cost of welding process.
[0032] like Figure 3 As shown, the utility model provides a rear floor reinforcement structure, comprising:
[0033] Rear floor rear cross member 1;
[0034] The left reinforcing beam and the right reinforcing beam respectively include an arc portion 9 and a straight beam portion 10, one end of the arc portion 9 is integrally connected to one end of the straight beam portion 10, and the other end of the arc portion 9 is connected to the rear cross beam 1 of the rear floor. The left reinforcing beam and the right reinforcing beam are connected to the rear cross beam 1 of the rear floor to form a U-shaped structure with a narrowed opening.
[0035] Specifically, in order to solve the problem that the rear floor reinforcement structure in the prior art adopts two rear floor rear cross beams 1 and a reinforcing longitudinal beam is arranged at the spare tire pit, which is not conducive to the lightweight design of the vehicle body and increases the difficulty and cost of welding; the rear floor reinforcement structure provided by the utility model replaces the two rear floor rear cross beams 1, the left spare tire pit reinforcement beam 2, the right spare tire pit reinforcement beam 3, the spare tire pit left front support plate 4 and the spare tire pit right front support plate 5 in the prior art by a rear floor rear cross beam 1, a left reinforcing beam and a right reinforcing beam. The rear floor spare tire pit panel 12 on the rear floor can be reinforced by the arc portion 9 of the left reinforcing beam and the right reinforcing beam, and is connected to the rear floor middle cross beam 11 through the straight beam portion 10. The arc portion 9 passes through the maximum displacement point of the modal frequency of the spare tire pit on the rear floor spare tire pit panel 12. This rear floor reinforcement structure can improve the mode of the spare tire pit on the rear floor spare tire pit panel 12, reduce the number of parts while ensuring the torsional stiffness of the skeleton of the rear floor assembly, and is conducive to achieving lightweight vehicle body.
[0036] Optionally, the rear floor rear cross beam 1 includes a rear cross beam body and a left connecting plate 6 and a right connecting plate 7 respectively arranged at two ends of the rear cross beam body.
[0037] Specifically, the left connecting plate 6 and the right connecting plate 7 are used to connect the left rear floor longitudinal beam 8 and the right rear floor longitudinal beam 8 respectively.
[0038] Optionally, the left reinforcement beam and the right reinforcement beam are connected to the left connecting plate 6 and the right connecting plate 7 respectively.
[0039] Specifically, the left reinforcement beam and the right reinforcement beam are connected to the rear cross beam body through the left connecting plate 6 and the right connecting plate 7 respectively.
[0040] Optionally, the cross sections of the rear floor rear cross beam 1 , the left reinforcing beam and the right reinforcing beam are all in the shape of a Chinese numeral “X”.
[0041] Specifically, the rear cross beam 1 of the rear floor, the left reinforcement beam and the right reinforcement beam are all used to connect with the rear floor, and after connection, a cavity structure is formed to improve the reinforcement effect.
[0042] Optionally, the arc portion 9 is a quarter circle.
[0043] Specifically, the arc portion 9 is used to cooperate with the shape of the arc-shaped spare tire well on the rear floor, and is used to be welded to the rear floor along the circumference of the spare tire well to strengthen the rear floor, passing the maximum displacement point of the modal frequency of the spare tire well. This rear floor reinforcement structure can improve the mode of the spare tire well.
[0044] Optionally, the materials of the rear floor rear cross beam 1, the left reinforcement beam and the right reinforcement beam are all steel plates.
[0045] Specifically, the rear cross beam 1 of the rear floor, the left reinforcement beam and the right reinforcement beam are all welded to the rear floor.
[0046] like Figure 4 As shown, the utility model also provides a rear floor assembly, comprising:
[0047] two rear floor rails 8;
[0048] A rear floor connected to two rear floor longitudinal beams 8;
[0049] The rear floor reinforcement structure mentioned above, the rear floor rear cross beam 1, the left reinforcement beam and the right reinforcement beam of the rear floor reinforcement structure are all connected to the lower side of the rear floor.
[0050] Specifically, two rear floor longitudinal beams 8 are distributed on the left and right sides of the rear end of the vehicle body, and the left and right sides of the rear floor are respectively connected to the two rear floor longitudinal beams 8. The above-mentioned rear floor reinforcement structure is connected to the rear floor and the rear floor longitudinal beams 8 to strengthen the overall structure.
[0051] Optionally, both ends of the rear floor rear cross beam 1 are connected to two rear floor longitudinal beams 8 respectively.
[0052] Specifically, two ends of the rear floor rear cross beam 1 are connected to two rear floor longitudinal beams 8 via a left connecting plate 6 and a right connecting plate 7 respectively.
[0053] Optionally, one end of the two rear floor longitudinal beams 8 is connected to the rear floor middle cross beam 11 , and the other end of the straight beam portion 10 of the left reinforcement beam and the right reinforcement beam is connected to the rear floor middle cross beam 11 .
[0054] Specifically, the straight beam portion 10 integrally formed with the arc portion 9 is connected to the rear floor middle cross beam 11 to improve the reinforcement effect.
[0055] Optionally, the rear floor includes a rear floor spare tire well panel 12, one end of the rear floor spare tire well panel 12 is connected to the rear floor middle cross beam 11, a spare tire well is arranged on the rear floor spare tire well panel 12, and the arc portion 9 of the left reinforcing beam and the right reinforcing beam is arranged along the outer periphery of the spare tire well.
[0056] Specifically, three sides of the rear floor spare tire well panel 12 are respectively connected to the rear floor middle cross beam 11 and the two rear floor longitudinal beams 8 , and the arc portion 9 surrounds the outer circumference of the spare tire well and is welded to the lower side of the rear floor spare tire well panel 12 .
[0057] The utility model also provides a car, comprising the above-mentioned rear floor assembly.
[0058] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims
1. A rear floor reinforcement structure, characterized in that: include: rear floor rear cross member; A left reinforcing beam and a right reinforcing beam, wherein the left reinforcing beam and the right reinforcing beam respectively include an arc portion and a straight beam portion, one end of the arc portion is integrally connected to one end of the straight beam portion, and the other end of the arc portion is connected to the rear cross beam of the rear floor, and the left reinforcing beam and the right reinforcing beam are connected to the rear cross beam of the rear floor to form a U-shaped structure with a narrowed opening.
2. The rear floor reinforcement structure according to claim 1, characterized in that: The rear floor rear cross beam comprises a rear cross beam body and a left connecting plate and a right connecting plate respectively arranged at two ends of the rear cross beam body.
3. The rear floor reinforcement structure according to claim 2, characterized in that: The left reinforcing beam and the right reinforcing beam are connected to the left connecting plate and the right connecting plate, respectively.
4. The rear floor reinforcement structure according to claim 1, characterized in that: The cross sections of the rear floor rear cross beam, the left reinforcing beam and the right reinforcing beam are all in the shape of a "X".
5. The rear floor reinforcement structure according to claim 1, characterized in that: The arc portion is a quarter of a circle.
6. A rear floor assembly, characterized in that: include: two rear floor rails; a rear floor connected to the two rear floor longitudinal beams; According to the rear floor reinforcement structure according to any one of claims 1 to 5, the rear floor rear cross beam, left reinforcement beam and right reinforcement beam of the rear floor reinforcement structure are all connected to the lower side of the rear floor.
7. The rear floor assembly according to claim 6, characterized in that: Two ends of the rear floor rear cross beam are respectively connected to the two rear floor longitudinal beams.
8. The rear floor assembly according to claim 6, characterized in that: One ends of the two rear floor longitudinal beams are connected to the rear floor middle cross beam, and the other ends of the straight beam portions of the left reinforcing beam and the right reinforcing beam are connected to the rear floor middle cross beam.
9. The rear floor assembly according to claim 8, characterized in that: The rear floor includes a rear floor spare tire well panel, one end of which is connected to the rear floor middle cross beam, a spare tire well is arranged on the rear floor spare tire well panel, and the arc portions of the left reinforcing beam and the right reinforcing beam are arranged along the outer circumference of the spare tire well.
10. An automobile, characterized in that: Comprising a rear floor assembly according to any one of claims 6-9.