Automobile rear floor assembly structure

Abstract

The utility model belongs to an automobile rear floor assembly structure in the technical field of automobile parts. Comprising a rear floor framework (1) and a rear floor body (12), the rear floor framework (1) comprises a left rear longitudinal beam front body (2) and a right rear longitudinal beam front body (3), one end of a rear floor front cross beam (4) is connected with the left rear longitudinal beam front body (2), the other end of the rear floor front cross beam (4) is connected with the right rear longitudinal beam front body (3), one end of a spare tire rear supporting bracket (5) is connected with the left rear longitudinal beam front body (2), and the other end of the spare tire rear supporting bracket (5) is connected with the right rear longitudinal beam front body (3). The other end of the spare tire rear supporting bracket (5) is connected with a right rear longitudinal beam front body (3), and the spare tire rear supporting bracket (5) is connected with a rear floor front cross beam (4) through a rear floor spare tire beam body (6). The automobile rear floor assembly structure is simple in structure and capable of improving torsional rigidity and modality.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile parts, more specifically, relate to an automobile rear floor assembly structure. BACKGROUND

[0002] With the rapid development of the automobile industry, the requirement for automobile quality develops to a new stage, and consumers pay more and more attention to the comfort, cost and safety of automobiles. At present, the rear floor assembly has the deficiency of the rear collision force transmission route, and the high-speed rear collision safety affects the life safety of passengers. The forming depth of the rear floor panel is high, and the drawing performance requirement of the part material is high, resulting in the increase of cost. Specifically, the existing rear floor assembly structure has the following problems: form one: the forming depth of the rear floor panel is high, which causes the floor framework cross beam to be required to be structured with the type, which is not conducive to the improvement of the torsional stiffness and modal of the floor assembly, and the performance needs to be improved by thickening or increasing the cross-sectional area, thereby causing the waste of cost. At the same time, the high-drawing material needs to be selected for the floor panel, which leads to the reduction of the material strength and the increase of the cost of the parts. Form two: the rear floor framework rear part longitudinal and transverse beam layout is unreasonable, the structure is discontinuous, and the high-speed rear collision safety has room for improvement.

[0003] In the prior art, a technology with the name of "automobile rear floor assembly and automobile" and the publication (announcement) number of "CN117818767A" is provided, which provides an automobile rear floor assembly and automobile. The automobile rear floor assembly of the present application comprises rear floor longitudinal beams arranged on the left and right sides, rear floor longitudinal beam rear sections connected to the rear ends of the rear floor longitudinal beams, and a rear floor front cross beam and a rear floor middle cross beam connected between the two rear floor longitudinal beams. The first rear floor panel is connected to the two rear floor longitudinal beams and located between the rear floor front cross beam and the rear floor middle cross beam. The rear floor rear cross beam is connected between the rear sections of the two rear floor longitudinal beams. The rear floor front cross beam is arranged close to the front end of the rear floor longitudinal beam. The rear floor middle cross beam is connected between the rear ends of the two rear floor longitudinal beams. The rear floor longitudinal beam is pressure cast. The rear floor front cross beam, the rear floor middle cross beam and the rear floor rear cross beam all adopt extruded aluminum structure. The automobile rear floor assembly of the present application can improve the torsional stiffness of the rear part of the vehicle body, which is beneficial to improving the collision safety. At the same time, the manufacturing cost is low, and the utility is good. The technology does not involve the technical problems and technical solutions of the present application. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to provide an automobile rear floor assembly structure with simple structure and improved torsional stiffness and modal in view of the deficiencies of the prior art.

[0005] To solve the above-mentioned technical problems, the technical scheme adopted by the utility model is as follows:

[0006] The utility model discloses a kind of automobile rear floor assembly structure, rear floor framework, rear floor body, rear floor framework includes left rear longitudinal beam front body, right rear longitudinal beam front body, rear floor front beam one end connects left rear longitudinal beam front body, rear floor front beam other end connects right rear longitudinal beam front body, spare tire rear support bracket one end connects left rear longitudinal beam front body, spare tire rear support bracket other end connects right rear longitudinal beam front body, spare tire rear support bracket is connected through rear floor spare tire beam body rear floor front beam.

[0007] The rear floor front beam includes rear floor front beam I and rear floor front beam II.

[0008] The rear floor spare tire beam body includes rear floor spare tire beam body I and rear floor spare tire beam body II.

[0009] Rear floor front beam I one end and rear floor front beam II one end are connected with left rear longitudinal beam front body respectively, and rear floor front beam I other end and rear floor front beam II other end are connected with right rear longitudinal beam front body respectively.

[0010] Rear floor spare tire beam body I is connected with rear floor front beam I and rear floor front beam II, and rear floor spare tire beam body II is connected with rear floor front beam II and spare tire rear support bracket.

[0011] The left rear longitudinal beam front body, right rear longitudinal beam front body, rear floor front beam I, rear floor front beam II, spare tire rear support bracket, rear floor spare tire beam body I and rear floor spare tire beam body II form the rear floor framework of field shape.

[0012] The rear floor framework is welded with the rear floor body.

[0013] The rear floor body is provided with multiple reinforcing ribs.

[0014] The connecting parts of the left rear longitudinal beam front body, right rear longitudinal beam front body, rear floor front beam I, rear floor front beam II, spare tire rear support bracket, rear floor spare tire beam body I and rear floor spare tire beam body II are welded.

[0015] The technical scheme of the utility model has the following working principle and beneficial effects:

[0016] The utility model discloses a car rear floor assembly structure, respectively processes rear floor skeleton, rear floor body, and the processing rear floor skeleton, rear floor body are all metal sheet spare processing and become. The structure of rear floor skeleton is specially improved: rear floor front crossbeam includes two, rear floor front crossbeam one end connects left rear longitudinal beam front body, and the other end of rear floor front crossbeam connects right rear longitudinal beam front body, and spare tire rear support bracket one end connects left rear longitudinal beam front body, and the other end of spare tire rear support bracket connects right rear longitudinal beam front body, and rear floor spare tire beam body includes two, and spare tire rear support bracket is connected through a rear floor spare tire beam body rear floor front crossbeam, and two rear floor front crossbeam is connected through another rear floor spare tire beam body. In this way, the whole rear floor skeleton is the frame structure of reliable rigidity, and presents the structure of the field. Then welds the floor skeleton, rear floor body, forms the car rear floor assembly structure. The structure of the utility model, the beneficial effect that can realize reflects the following aspects: 1, rear floor skeleton adopts the skeleton structure of the field, can improve the torsional stiffness of rear floor assembly, modal, 2, rear floor body is the plane structure, and simultaneously arranges multiple reinforcing bars to promote the rigidity of itself, effectively reduces the difficulty of forming, simultaneously selects low drawability material to reduce the cost, 3, rear floor skeleton adopts the layout of the field, provides multiple force transmission paths, and effectively lengthens the path of collision force transmission through the setting of spare tire rear support bracket, improves the high-speed rear collision safety performance. The structure of the utility model, the component group welding of rear floor skeleton forms the frame structure of the field. Under the premise of controllable cost, aiming at high-speed rear collision, the frame structure of the field of rear floor skeleton effectively improves torsional stiffness and modal, simultaneously combines spare tire rear support bracket, prolongs the area and effectively improves force transmission route and reduces collision deformation, improves the torsional stiffness of rear floor assembly and modal, improves overall performance. BRIEF DESCRIPTION OF DRAWINGS

[0017] The following is a brief description of the content expressed by each drawing of the present specification and the marks in the drawings:

[0018] Figure 1 It is the structure schematic view of the car rear floor assembly structure of the utility model;

[0019] Figure 2 It is the overhead structure schematic view of the car rear floor assembly structure of the utility model;

[0020] The marks in the drawings are as follows: 1, rear floor skeleton; 2, left rear longitudinal beam front body; 3, right rear longitudinal beam front body; 4, rear floor front crossbeam; 5, spare tire rear support bracket; 6, rear floor spare tire beam body; 7, rear floor front crossbeam I; 8, rear floor front crossbeam II; 9, rear floor spare tire beam body I; 10, rear floor spare tire beam body II; 11, reinforcing bar; 12, rear floor body. DETAILED DESCRIPTION

[0021] The shape, structure, mutual position and connecting relationship between the parts, the function and working principle of each part of the specific embodiments of the present application will be further described in detail below with reference to the drawings and the description of the embodiments.

[0022] As shown in the accompanying Figure 1 - the accompanying Figure 2The utility model discloses a kind of automobile rear floor assembly structures, rear floor skeleton 1, rear floor body 12, rear floor skeleton 1 includes left rear longitudinal beam front body 2, right rear longitudinal beam front body 3, rear floor front crossbeam 4 one end is connected left rear longitudinal beam front body 2, rear floor front crossbeam 4 other end is connected right rear longitudinal beam front body 3, spare tire rear support bracket 5 one end is connected left rear longitudinal beam front body 2, spare tire rear support bracket 5 other end is connected right rear longitudinal beam front body 3, spare tire rear support bracket 5 is connected rear floor front crossbeam 4 by rear floor spare tire beam body 6.The above structure, for the deficiency in the prior art, propose the technical scheme of improvement.Structure is set, respectively process rear floor skeleton 1, rear floor body 12, process rear floor skeleton 1, rear floor body 12 are all metal sheet piece processing and form.Specific improvement is carried out to the structure of rear floor skeleton:rear floor front crossbeam 4 includes two, rear floor front crossbeam 4 one end is connected left rear longitudinal beam front body 2, rear floor front crossbeam 4 other end is connected right rear longitudinal beam front body 3, spare tire rear support bracket 5 one end is connected left rear longitudinal beam front body 2, spare tire rear support bracket 5 other end is connected right rear longitudinal beam front body 3, rear floor spare tire beam body 6 includes two, spare tire rear support bracket 5 is connected rear floor front crossbeam 4 by one rear floor spare tire beam body 6, two rear floor front crossbeams are connected by another rear floor spare tire beam body 6.In this way, entire rear floor skeleton 1 is the frame structure of reliable rigidity, and present tianzi shape structure.Then weld floor skeleton 1, rear floor body 12, form automobile rear floor assembly structure.The structure of the utility model, the beneficial effect that can be realized reflects in following aspects:1, rear floor skeleton 1 adopts tianzi shape skeleton structure, can effectively improve the torsional stiffness of rear floor assembly, modal;2, rear floor body 12 is planar structure, while arranging multiple reinforcing bars to promote its rigidity, effectively reduce forming difficulty, while selecting low drawability material to reduce cost;3, rear floor skeleton 1 adopts tianzi shape layout, provides multiple force transmission paths, and effectively lengthens the path of collision force by the setting of spare tire rear support bracket, improves high-speed rear collision safety performance.The structure of the utility model, the component group welding of rear floor skeleton 1 forms tianzi shape frame structure.Under the premise of controllable cost, for high-speed rear collision, the tianzi shape frame structure of rear floor skeleton 1 effectively improves torsional stiffness and modal, while combining spare tire rear support bracket 5, effectively improves force transmission route and reduces collision deformation in extension area, improves the torsional stiffness of rear floor assembly and modal, improves overall performance.The automobile rear floor assembly structure described in the utility model has simple structure, and can improve torsional stiffness and modal.

[0023] The rear floor front crossbeam 4 includes rear floor front crossbeam I7 and rear floor front crossbeam II8. The rear floor spare tire beam body 6 includes rear floor spare tire beam body I9 and rear floor spare tire beam body II10. One end of the rear floor front crossbeam I7 and one end of the rear floor front crossbeam II8 are respectively connected to the front body 2 of the left rear longitudinal beam, and the other end of the rear floor front crossbeam I7 and the other end of the rear floor front crossbeam II8 are respectively connected to the front body 3 of the right rear longitudinal beam. The rear floor spare tire beam body I9 connects the rear floor front crossbeam I7 and the rear floor front crossbeam II8, and the rear floor spare tire beam body II10 connects the rear floor front crossbeam II8 and the spare tire rear support bracket 5. The left rear longitudinal beam front body 2, the right rear longitudinal beam front body 3, the rear floor front crossbeam I7, the rear floor front crossbeam II8, the spare tire rear support bracket 5, the rear floor spare tire beam body I9, and the rear floor spare tire beam body II10 form a grid-shaped rear floor frame 1. The improvement of the above structure is mainly reflected in the improvement of the rear floor frame. For high-speed rear collisions, the grid-shaped frame structure of the rear floor frame 1, combined with the rear support bracket of the spare tire, extends the area to effectively improve the force transmission path and reduce collision deformation, thereby improving the torsional stiffness and modal characteristics of the rear floor assembly.

[0024] The rear floor frame 1 is welded to the rear floor body 12. Multiple reinforcing ribs 11 are provided on the rear floor body 12. In the above structure, the rear floor body adopts a planar structure design and employs multiple reinforcing ribs to improve its rigidity. The rear floor body 12 and the rear floor frame 1 are welded together to form the rear floor assembly. The planar structure of the rear floor body 12 facilitates molding, and the selection of a low-ductility material reduces the cost of the rear floor body 12.

[0025] The connecting parts of the left rear longitudinal beam front body 2, the right rear longitudinal beam front body 3, the rear floor front crossbeam I 7, the rear floor front crossbeam II 8, the spare tire rear support bracket 5, the rear floor spare tire beam body I 9, and the rear floor spare tire beam body II 10 are welded together. This structure, through welding, reliably connects the various components of the rear floor frame, improving strength.

[0026] The utility model discloses a car rear floor assembly structure, respectively process rear floor skeleton 1, rear floor body 12, process rear floor skeleton 1, rear floor body 12 are all metal sheet parts processing. The structure of the rear floor skeleton is specially improved: the rear floor front crossbeam 4 includes two, the rear floor front crossbeam 4 one end is connected left rear longitudinal beam front body 2, the rear floor front crossbeam 4 other end is connected right rear longitudinal beam front body 3, spare tire rear support bracket 5 one end is connected left rear longitudinal beam front body 2, spare tire rear support bracket 5 other end is connected right rear longitudinal beam front body 3, the rear floor spare tire beam body 6 includes two, spare tire rear support bracket 5 is connected rear floor front crossbeam 4 through a rear floor spare tire beam body 6, and two rear floor front crossbeams are connected through another rear floor spare tire beam body 6. In this way, the whole rear floor skeleton 1 is the frame structure of reliable rigidity, and presents the structure of the field. Then welds floor skeleton 1, rear floor body 12, forms car rear floor assembly structure. The structure of the utility model, the beneficial effect that can be realized reflects the following aspects: 1, rear floor skeleton 1 adopts the skeleton structure of the field, can effectively improve the torsional stiffness of rear floor assembly, modal, 2, rear floor body 12 is the plane structure, and simultaneously arranges multiple reinforcing bars to promote the rigidity of itself, effectively reduces the difficulty of forming, simultaneously selects low drawability material to reduce the cost, 3, rear floor skeleton 1 adopts the layout of the field, provides multiple force transmission paths, and effectively lengthens the path of collision force transmission through the setting of spare tire rear support bracket, improves the high-speed rear-end collision safety performance. The structure of the utility model, the component group welding of rear floor skeleton 1 forms the frame structure of the field. Under the premise that cost is controllable, aiming at high-speed rear-end collision, the frame structure of the field of rear floor skeleton 1 effectively improves torsional stiffness and modal, simultaneously combines spare tire rear support bracket 5, and effectively improves force transmission route and reduces collision deformation in the extension area, improves the torsional stiffness and modal of rear floor assembly, and improves overall performance.

[0027] The utility model has been described exemplarily above in connection with the drawings, and obviously, the specific implementation of the utility model is not limited by the above-mentioned mode, as long as various improvements are made by adopting the method concept and technical scheme of the utility model, or the concept and technical scheme of the utility model is directly applied to other occasions without improvement, which is within the protection scope of the utility model.

Claims

1. An automotive rear floor assembly structure, characterized by: The rear floor frame (1) and the rear floor body (12) are included. The rear floor frame (1) includes the front body of the left rear longitudinal beam (2) and the front body of the right rear longitudinal beam (3). One end of the front crossbeam of the rear floor (4) is connected to the front body of the left rear longitudinal beam (2), and the other end of the front crossbeam of the rear floor (4) is connected to the front body of the right rear longitudinal beam (3). One end of the spare tire rear support bracket (5) is connected to the front body of the left rear longitudinal beam (2), and the other end of the spare tire rear support bracket (5) is connected to the front body of the right rear longitudinal beam (3). The spare tire rear support bracket (5) is connected to the front crossbeam of the rear floor (4) through the spare tire beam body of the rear floor (6).

2. The automotive rear floor assembly structure of claim 1, wherein: The aforementioned rear floor front crossbeam (4) includes rear floor front crossbeam I (7) and rear floor front crossbeam II (8).

3. The automotive rear floor assembly structure of claim 2, wherein: The rear floor spare tire beam body (6) includes rear floor spare tire beam body I (9) and rear floor spare tire beam body II (10).

4. The automotive rear floor assembly structure of claim 3, wherein: One end of the rear floor front crossbeam I (7) and one end of the rear floor front crossbeam II (8) are respectively connected to the front body of the left rear longitudinal beam (2), and the other end of the rear floor front crossbeam I (7) and the other end of the rear floor front crossbeam II (8) are respectively connected to the front body of the right rear longitudinal beam (3).

5. The automotive rear floor assembly structure of claim 4, wherein: The rear floor spare tire beam body I (9) connects the rear floor front crossbeam I (7) and the rear floor front crossbeam II (8), and the rear floor spare tire beam body II (10) connects the rear floor front crossbeam II (8) and the spare tire rear support bracket (5).

6. The automotive rear floor assembly structure of claim 3, wherein: The left rear longitudinal beam front body (2), the right rear longitudinal beam front body (3), the rear floor front crossbeam I (7), the rear floor front crossbeam II (8), the spare tire rear support bracket (5), the rear floor spare tire beam body I (9), and the rear floor spare tire beam body II (10) form a grid-shaped rear floor frame.

7. The automotive rear floor assembly structure of claim 1 or 2, wherein: The rear floor frame (1) is welded to the rear floor body (12).

8. The automotive rear floor assembly structure of claim 7, wherein: Multiple reinforcing ribs (11) are provided on the rear floor body (12).

9. The automotive rear floor assembly structure of claim 6, wherein: The front body of the left rear longitudinal beam (2), the front body of the right rear longitudinal beam (3), the front crossbeam of the rear floor (7), the front crossbeam of the rear floor (8), the rear support bracket of the spare tire (5), the spare tire beam body of the rear floor (9), and the spare tire beam body of the rear floor (10) are welded together.

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