CN202879610U

CN202879610U - Rear floor structure

Info

Publication number: CN202879610U
Application number: CN 201220572618
Authority: CN
Inventors: 李仲奎; 朱健; 陈孟华; 蒋玲珑; 李�浩; 王镇斌
Original assignee: Dongfeng Motor Corp
Current assignee: Dongfeng Motor Corp
Priority date: 2012-11-01
Filing date: 2012-11-01
Publication date: 2013-04-17
Anticipated expiration: 2022-11-01

Abstract

The utility model relates to a rear floor structure, and belongs to the technical field of battery-powered car floors. The rear floor structure comprises a rear floor front part and a rear floor rear part, wherein a rear floor rear part front blanking plate is arranged between the rear floor front part and the rear floor rear part, a rear floor rear part rear blanking plate is arranged on the rear end portion of the rear floor rear part, the rear end of a rear floor front part is in a downward table sinking structure, and the cross section of the rear floor rear part is in a structure shaped like an inverted Chinese character 'ji'; a rear floor front beam, a rear floor middle beam and a rear floor rear beam are arranged at the bottom of the rear floor front part in sequence; and a left longitudinal beam and a right longitudinal beam are respectively arranged on two side edges of the bottom of the rear floor front part, a left longitudinal beam and a right longitudinal beam are respectively arranged on two side edges of the rear floor rear part, left longitudinal beams and right longitudinal beams are attached and fixed at bottoms of the rear floor front part and the rear floor rear part, two ends of the rear floor front beam, the rear floor middle beam and the rear floor rear beam are respectively connected with the left longitudinal beams and the right longitudinal beams, and thus two closed frame structures are formed. The rear floor structure meets requirements of power battery arrangement, and improves torsional rigidity of a rear floor framework simultaneously.

Description

A kind of rear floor structure

Technical field

The utility model belongs to battery-operated automotive floor panel technical field, is specifically related to a kind of rear floor structure.

Background technology

Plug-in hybrid-power automobile is according to the needs of arrangement, electrokinetic cell is arranged in bottom of luggage case, body tail need to bear too much weight, rear floor frame of the prior art is difficult to satisfy requirement of strength, and it is very useful therefore designing a kind of rear floor frame of bodywork structure that satisfies the requirement of bottom of luggage case device electrokinetic cell.

Summary of the invention

The purpose of this utility model is for the problems referred to above, and a kind of rear floor structure is provided, and satisfies the requirement that electrokinetic cell is arranged in the bus body strength performance of bottom of luggage case.

The technical solution adopted in the utility model is: it comprises rear ground prelaminar part and rear rear floor, be provided with the front shrouding of rear rear floor between described rear ground prelaminar part and the rear rear floor, the rearward end of rear rear floor is provided with shrouding behind the rear rear floor, the rear end of rear ground prelaminar part is downward heavy stand structure, and rear rear floor transversal surface becomes " several " character form structure; The bottom of rear ground prelaminar part is provided with rear floor front cross rail successively, and rear floor middle and rear floor after cross member, rear floor after cross member are the below that flat " several " font is fitted in the front shrouding of rear rear floor; Be respectively equipped with left side longeron and the right longeron on rear ground prelaminar part and the rear rear floor two bottom sides limit, left side longeron and the right longeron are fitted and are fixed on rear ground prelaminar part and rear rear floor bottom, rear floor front cross rail, rear floor middle be connected two of floor after cross member and be connected with the right longeron with left side longeron respectively, form the framed structure of two sealings.

Further, described rear floor middle is provided with brace panel.

Further, described rear floor middle two ends form the first rear overhang attachment point and the second rear overhang attachment point with the junction of left side longeron and the right longeron respectively.

The utlity model has simple in structure, cost is low, technique realize to be easy to characteristics, in the utility model partition organization can solve the requirement that the plug-in hybrid-power automobile bottom of luggage case is arranged electrokinetic cell; Three crossbeams connect limit, left and right sides longeron, have improved the torsional stiffness of rear floor frame; The limit longeron runs through the whole story, the bending stiffness on the rear floor of strengthening knowing clearly.Utilize this rear floor frame girder construction and rear floor welded together, can satisfy arrangement space, intensity and performance requriements that electrokinetic cell is arranged in bottom of luggage case.

Description of drawings

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

Fig. 2 is rear floor frame girder construction schematic diagram;

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

Fig. 4 is rear floor frame beam part exploded view;

Fig. 5 is rear floor frame and front floor framework connection diagram;

Fig. 6 is rear floor middle and environment spare connection diagram;

Fig. 7 is rear floor power battery cabin structural representation;

Floor rear beam structure and environment spare connection diagram behind Fig. 8;

Fig. 9 is that electrokinetic cell wraps in the scheme of installation on the rear floor.

Wherein, 1-rear floor frame beam; 2-left side longeron; 3-the right longeron; 4-rear floor front cross rail; 5-rear floor middle; 6-rear floor after cross member; 7-front ground edges of boards longeron; The 8-the first rear overhang attachment point; The 9-the second rear overhang attachment point; 10-front deck; 11-rear deck; 12-afterwards prelaminar parts; Shrouding before the 13-rear rear floor; 14-rear rear floor; Shrouding behind the 15-rear rear floor; 16-electrokinetic cell bag.

The specific embodiment

The present invention is described in further detail below in conjunction with the drawings and specific embodiments, be convenient to be well understood to the present invention, but they do not consist of restriction to the present invention.

As shown in Figure 1, it comprises rear ground prelaminar part 12 and rear rear floor 14, be provided with the front shrouding 13 of rear rear floor between 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 surfaces become " several " character form structure; As shown in Figure 2, 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 the rear rear floor 14 two bottom sides limits, 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 bottoms, rear floor front cross rail 4, rear floor middle 5 be connected two of floor after cross member 6 and be connected with the right longeron with left side longeron 2 respectively and be connected, form the framed structure of two sealings.Rear floor middle 5 is provided with brace panel.As shown in Figure 6, 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.

As shown in Figure 2, rear floor assembly is welded together synthetic by rear floor branch unit and rear floor frame beam 1.Can install electrokinetic cell bag 16 on the rear rear floor 14.Rear floor frame adopts the version of two limit longerons and three crossbeams, specifically comprises left side longeron 2, the right longeron 3, rear floor front cross rail 4, rear floor middle 5 and rear floor after cross member 6.

As shown in Figure 3, the planform of rear floor frame beam 1 and welding relation are in conjunction with as shown in Figure 2, and rear floor front cross rail 4 is in rear ground prelaminar part 12 front ends below, about perforation, and ground edges of boards longeron 7 before connecting.As shown in Figure 6, the left side, rear floor longeron 2, the right longeron 3 are done respective design according to rear overhang attachment point 8,9 locus and the space size of battery flat, and one before and after guaranteeing has enough bending stiffnesses; Rear floor middle 5 two ends and left side longeron 2 and the right longeron 3 overlap, and are on the rear overhang attachment point 8,9, attachment point brace panel under row's safety strap after the welding of rear floor middle 5 middle parts; After cross member 6 two ends, rear floor with overlap with left side longeron 2 and the right longeron 3.

As shown in Figure 5, the left side, rear floor longeron 2 anterior front ground edges of boards longeron 7 and the rear floor front cross rails 4 of connecting.The welding relation on longeron 3 the same floors, the right is symmetrical with it.

As shown in Figure 6, the bonding relation of rear floor middle 5 and left side longeron 2, the right longeron 3 and ambient environment part, end and 2,3 welding of limit, left and right sides longeron are fitted in limit, left and

right sides longeron

2,3 the insides, and the joint place forms rear overhang attachment point 8,9.Attachment point brace panel under row's safety strap after the rear floor middle 5 middle parts welding, the integral body after the welding again with rear floor welded together.

As shown in Figure 7, the planform of power battery cabin is considered the structural strength of rear floor frame beam, and is strengthened the power battery cabin space as far as possible, power battery cabin is designed to the planform of front deck 10 and rear deck 11.

As shown in Figure 8; rear floor after cross member 6 is along with the rear floor structure shape is crooked to some extent; be flat " several " font; form closed cross-section with shrouding before rear ground prelaminar part 12, the rear rear floor 13; two ends snap on limit, the left and

right sides longeron

2,3, adopt spot welding and gas shield welding and 2,3 welding of limit, left and right sides longeron.

As shown in Figure 1, according to punching process character and welding process, rear floor is divided into 15 4 parts of shrouding behind rear ground prelaminar part 12, the front shrouding 13 of rear rear floor, rear rear floor 14 and the rear rear floor.

As shown in Figure 9, electrokinetic cell bag 16 is installed on the fixed support beam of both sides, rear floor by the both sides hanger, fixed support beam longitudinal design, with limit, rear floor frame left and

right sides longeron

2,3 weld togethers, shrouding 13 before ground prelaminar part 12 and the rear rear floor after front end connects, rear floor after cross member 6 also have very strong supporting role to it.

The utility model rear floor frame beam 1 adopts two limit longerons and three beam structure forms, the limit longeron runs through rear floor whole story, rear floor front cross rail 4 is fitted in rear ground prelaminar part 12 inner faces, rear ground edges of

boards longeron

2,3 and rear floor front cross rail 4 and front ground edges of boards longeron 7 overlap, and mutually strengthen.Rear suspension attachment point 8,9 is in rear floor middle 5, rear floor after cross member 6 and limit

longeron

2,3 lap-joint, and the attachment point brace panel is welded on the rear floor middle 5 under rear row's Passenger-Seat-Belt.Rear floor after cross member 6 is invert-Chen-Shuibian " several " character form structure, forms preferably bridging arrangement with the rear rear floor that installs electrokinetic cell.Electrokinetic cell fixed support beam sees through rear floor and limit

longeron

2,3 weld togethers, has also strengthened well rear floor frame intensity.

Claims

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.