CN202879610U - Rear floor structure - Google Patents

Abstract

The utility model relates to a rear floor structure, which belongs to the technical field of battery-driven automobile floors. It includes the front part of the rear floor and the rear part of the rear floor, the front rear sealing plate of the rear floor is arranged between the front part of the rear floor and the rear part of the rear floor, and the rear sealing plate of the rear part of the rear floor is arranged at the rear end of the rear floor , the rear end of the front part of the rear floor is a sunken platform structure, and the cross section of the rear part of the rear floor is an inverted "ji"structure; the bottom of the front part of the rear floor is provided with the front beam of the rear floor, the middle beam of the rear floor and the rear floor Rear crossbeam; the front part of the rear floor and the rear bottom of the rear floor are respectively provided with a left longitudinal beam and a right longitudinal beam, and the left longitudinal beam and the right longitudinal beam are fitted and fixed on the front part of the rear floor and the bottom of the rear part of the rear floor. The two ends of the front beam of the rear floor, the middle beam of the rear floor and the rear beam of the rear floor are respectively connected with the left longitudinal beam and the right longitudinal beam to form two closed frame structures. The utility model satisfies the layout requirements of the power battery and improves the torsional rigidity of the rear floor frame at the same time.

Description

a rear floor structure

technical field

The utility model belongs to the technical field of battery-driven car floors, in particular to a rear floor structure.

Background technique

According to the needs of the vehicle layout, the plug-in hybrid electric vehicle arranges the power battery at the bottom of the trunk, and the rear of the body needs to bear too much weight. It is very beneficial to have a vehicle body rear floor frame structure that meets the requirements of the power battery installed at the bottom of the trunk.

Contents of the invention

The purpose of the utility model is to solve the above problems and provide a rear floor structure that meets the requirements of the strength performance of the vehicle body where the power battery is arranged at the bottom of the trunk.

The technical scheme adopted by the utility model is: it includes the front part of the rear floor and the rear part of the rear floor, the front sealing plate of the rear part of the rear floor is arranged between the front part of the rear floor and the rear part of the rear floor, and the rear part of the rear part of the rear floor The rear end of the rear floor is provided with a rear sealing plate, the rear end of the front part of the rear floor is a sunken platform structure, and the cross section of the rear part of the rear floor is an inverted "Ji"-shaped structure; the bottom of the front part of the rear floor is arranged in turn. The front crossbeam of the floor, the middle crossbeam of the rear floor and the rear crossbeam of the rear floor. The left side beam and the right side beam are respectively arranged on the side, and the left side beam and the right side beam are fitted and fixed on the front part of the rear floor and the bottom of the rear part of the rear floor, the front crossbeam of the rear floor, the middle crossbeam of the rear floor and the rear crossbeam of the rear floor The two ends are respectively connected with the left longitudinal beam and the right longitudinal beam to form two closed frame structures.

Further, a reinforcing plate is provided on the middle beam of the rear floor.

Furthermore, the joints between the two ends of the cross beam in the rear floor and the left side beam and the right side beam respectively form a first rear suspension installation point and a second rear suspension installation point.

The utility model has the characteristics of simple structure, low cost, and easy process realization. The block structure of the floor in the utility model can solve the requirement of arranging power batteries at the bottom of the trunk of the plug-in hybrid electric vehicle; three beams connect the left and right longitudinal beams, improving The torsional rigidity of the rear floor frame is improved; the side longitudinal beam runs through the whole body, which strengthens the bending rigidity of the rear floor. The rear floor skeleton beam structure is welded together with the rear floor, which can meet the arrangement space, strength and performance requirements of the power battery arranged at the bottom of the trunk.

Description of drawings

Fig. 1 schematic diagram of rear floor structure of the utility model;

Fig. 2 is a structural schematic diagram of the rear floor skeleton beam;

Fig. 3 is a schematic diagram of the rear floor frame beam area of the utility model;

Figure 4 is an exploded view of the rear floor skeleton beam parts;

Figure 5 is a schematic diagram of the connection between the rear floor frame and the front floor frame;

Figure 6 is a schematic diagram of the connection between the middle beam of the rear floor and the environmental components;

Figure 7 is a schematic diagram of the structure of the rear floor power battery compartment;

Figure 8 is a schematic diagram of the connection between the rear beam structure of the rear floor and the environmental components;

Figure 9 is a schematic diagram of the installation of the power battery pack on the rear floor.

Among them, 1—rear floor frame beam; 2—left longitudinal beam; 3—right longitudinal beam; 4—rear floor front beam; 5—rear floor middle beam; 6—rear floor rear beam; 7—front floor side beam; 8—first rear suspension installation point; 9—second rear suspension installation point; 10—front cabin; 11—rear cabin; 12—front of rear floor; 13—front sealing plate at rear of rear floor; 14—rear of rear floor 15—rear sealing plate at the rear of the rear floor; 16—power battery pack.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.

As shown in Figure 1, it comprises rear floor front portion 12 and rear floor rear portion 14, is provided with rear floor rear portion front sealing plate 13 between rear floor front portion 12 and rear floor rear portion 14, rear floor rear portion 14 The rear end is provided with a rear panel 15 at the rear of the rear floor, and the rear end of the front portion 12 of the rear floor is a sinking platform structure, and the cross section of the rear portion of the rear floor 14 is an inverted "several" structure; as shown in Figure 2, The bottom of the front part 12 of the rear floor is provided with a rear floor front crossbeam 4, a rear floor middle crossbeam 5 and a rear floor rear crossbeam 6 in sequence, and the rear floor rear crossbeam 6 is flat and inverted in the shape of a "several" and fits on the rear front sealing plate of the rear floor The bottom of 13; the left side beam 2 and the right side beam 3 are arranged on both sides of the bottom of the front part 12 of the rear floor and the rear part 14 of the rear floor respectively, and the left side beam 2 and the right side beam 3 are fitted and fixed on the front part of the rear floor 12 and rear floor rear portion 14 bottom, rear floor front beam 4, the two ends of rear floor middle beam 5 and rear floor rear beam 6 are connected with left side beam 2 and right side beam 3 respectively, forming two closed frame structures. A reinforcing plate is arranged on the crossbeam 5 in the rear floor. As shown in FIG. 6 , a first rear suspension installation point 8 and a second rear suspension installation point 9 are formed at the joints of the two ends of the rear floor middle beam 5 and the left side beam 2 and the right side beam 3 respectively.

As shown in Fig. 2, the rear floor assembly is synthesized by welding the rear floor sub-assembly and the rear floor frame beam 1 together. A power battery pack 16 can be installed above the rear floor rear portion 14 . The rear floor frame adopts the structural form of two side longitudinal beams and three cross beams, specifically including the left longitudinal beam 2, the right longitudinal beam 3, the rear floor front beam 4, the rear floor middle beam 5 and the rear floor rear beam 6.

As shown in Figure 3, the structural shape and welding relationship of the rear floor frame beam 1 are combined as shown in Figure 2. As shown in Figure 6, the left longitudinal beam 2 and the right longitudinal beam 3 of the rear floor are designed according to the spatial positions of the rear suspension installation points 8 and 9 and the space size of the battery compartment to ensure that the front and rear are integrated and have sufficient bending stiffness; the rear floor The two ends of the middle beam 5 are overlapped with the left side beam 2 and the right side beam 3, and are located on the rear suspension installation points 8 and 9, and the middle part of the rear floor middle beam 5 is welded to the reinforcement plate at the lower fixing point of the rear seat belt; the rear floor The two ends of the rear beam 6 are overlapped with the left side beam 2 and the right side beam 3 .

As shown in FIG. 5 , the front part of the left longitudinal beam 2 of the rear floor is connected with the side longitudinal beam 7 of the front floor and the front cross member 4 of the rear floor. The welding relationship between the right longitudinal beam 3 and the front floor is symmetrical with it.

As shown in Figure 6, the overlapping relationship between the middle beam 5 of the rear floor, the left side beam 2, the right side beam 3 and the surrounding environmental parts, the ends are welded to the left and right side beams 2 and 3, and are attached to the left and right side beams 2 , 3 inside, the rear hanging installation points 8,9 are formed at the joint. The middle part of crossbeam 5 in the rear floor is welded to the lower fixed point reinforcing plate of the rear safety belt, and the welded whole is welded together with the rear floor again.

As shown in FIG. 7 , the structural shape of the power battery compartment is designed to have the structural shape of the front compartment 10 and the rear compartment 11 in consideration of the structural strength of the rear floor frame beams and increasing the space of the power battery compartment as much as possible.

As shown in Figure 8, the rear crossbeam 6 of the rear floor is bent with the structural shape of the rear floor, and is in the shape of a flat inverted "several", forming a closed section with the front part 12 of the rear floor and the front sealing plate 13 at the rear of the rear floor. It is lapped to the left and right longitudinal beams 2 and 3, and is welded to the left and right longitudinal beams 2 and 3 by spot welding and gas shielded welding.

As shown in Figure 1, according to the stamping process and welding process, the rear floor is divided into four parts: the front part 12 of the rear floor, the front sealing plate 13 at the rear part of the rear floor, the rear part 14 of the rear floor and the rear sealing plate 15 at the rear part of the rear floor pieces.

As shown in Figure 9, the power battery pack 16 is installed on the fixed support beams on both sides of the rear floor through the lifting lugs on both sides. Part 12 and the front sealing plate 13 of the back floor rear portion, and the rear crossbeam 6 of the back floor also has a strong supporting effect to it.

The rear floor skeleton beam 1 of the utility model adopts the structural form of two side longitudinal beams and three cross beams, the side longitudinal beams run through the whole of the rear floor, the front cross beam 4 of the rear floor is attached to the inner surface of the front part 12 of the rear floor, and the rear floor side longitudinal beams 2 , 3 and the front crossbeam 4 of the rear floor and the front floor side longitudinal beam 7 are lapped together to reinforce each other. The fixed points 8 and 9 of the rear suspension are at the overlapping joints of the rear floor center crossbeam 5, the rear floor rear crossbeam 6 and the side longitudinal beams 2 and 3, and the reinforcement plates at the lower fixing points of the rear passenger seat belts are welded on the rear floor center crossbeam 5 . The rear crossbeam 6 of the rear floor is in the shape of an inverted "Ji" and forms a good overlapping structure with the rear part of the rear floor where the power battery is installed. The power battery fixing bracket beam is welded together with the side longitudinal beams 2 and 3 through the rear floor, which also strengthens the strength of the rear floor skeleton.

Claims (3)

1. rear floor structure, it comprises rear ground prelaminar part (12) and rear rear floor (14), it is characterized in that: be provided with the front shrouding (13) of rear rear floor between described rear ground prelaminar part (12) and the rear rear floor (14), the rearward end of rear rear floor (14) is provided with shrouding (15) behind the rear rear floor, the rear end of rear ground prelaminar part (12) is downward heavy stand structure, and rear rear floor (14) transversal surface becomes " several " character form structure; The bottom of rear ground prelaminar part (12) is provided with rear floor front cross rail (4) successively, and rear floor middle (5) and rear floor after cross member (6), rear floor after cross member (6) are the below that flat " several " font is fitted in the front shrouding (13) of rear rear floor; Be respectively equipped with left side longeron (2) and the right longeron (3) on rear ground prelaminar part (12) and rear rear floor (14) the two bottom sides limit, left side longeron (2) and the right longeron (3) are fitted and are fixed on rear ground prelaminar part (12) and rear rear floor (14) bottom, rear floor front cross rail (4), rear floor middle (5) be connected two of floor after cross member (6) and be connected 3 with left side longeron (2) with the right longeron respectively) be connected, form the framed structure of two sealings.

2. a kind of rear floor structure according to claim 1, it is characterized in that: described rear floor middle (5) is provided with brace panel.

3. a kind of rear floor structure according to claim 1 is characterized in that: described rear floor middle (5) two ends form the first rear overhang attachment point (8) and the second rear overhang attachment point (9) with the junction of left side longeron (2) and the right longeron (3) respectively.

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