CN201670272U

CN201670272U - Automobile rear floor assembly

Info

Publication number: CN201670272U
Application number: CN2010201740265U
Authority: CN
Inventors: 唐杰; 全刚; 李伟
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2010-04-28
Filing date: 2010-04-28
Publication date: 2010-12-15
Anticipated expiration: 2020-04-28

Abstract

The utility model provides an automobile rear floor assembly which is applicable to a minicar and meets the requirements of side collision and rear collision. The automobile rear floor assembly mainly comprises a rear floor front cross beam, a rear floor middle cross beam, a rear floor rear cross beam and a rear longitudinal beam which respectively adopt a structure of being lap-jointed into closed sections with a rear floor. The structure has the advantages of simple structure, convenient manufacture, low cost and good safety performance.

Description

A kind of automobile rear floor assembly

Technical field

The utility model belongs to the body structure technical field, is specifically related to a kind of automobile rear floor assembly.

Background technology

Along with popularizing of A00 level and A0 level baby car, in fuel-economizing, people require also more and more to pay attention to the passive security performance of baby car.

Automobile is when bumping, and actual is exactly the process of energy in kinetic energy is converted into, and the energy distribution of effectively controlling in the collision process (transfer of energy and ability absorb) is the basis of carrying out the vehicle body safe design.Guarantee collision safety by increasing reinforcement, strength of material and thickness merely, can not adapt to the low cost and the weight-saving trend of present vehicle body, be difficult to deal with intense market competition.

When side collision, impact force is delivered on the back floor framework assembly (vehicle frame) by side-wall outer-plate.When colliding in the back, impact force acts directly on back floor framework assembly (vehicle frame) and the floor, back.No matter be side impact, bump after still, back floor framework assembly (vehicle frame) all plays the main support effect, to protect occupant's safety.Therefore for guarantee simultaneously the baby car side impact and after bump performance, the layout and the design of part of floor framework assembly (vehicle frame) behind the necessary optimal design.

The self-supporting body of general baby car, because wheelbase is short, the space is less, reasonably optimizing does not design vehicle frame simultaneously.Not only frame parts are various and heavy, also cause easily side impact or after safety performance when bumping on the low side, have a strong impact on occupant safety.

The utility model content

The purpose of this utility model be at side impact and after the safety performance problem that exists in the automobile rear floor assembly when bumping, a kind of simple in structure, easily manufactured, automobile rear floor assembly that anticollision performance is good is provided.

Technical solutions of the utility model are as follows:

A kind of automobile rear floor assembly, it is made up of floor, back front cross rail, floor, back center member, floor, back after cross member, floor, back and floor side member; Floor, described back front cross rail, back floor center member and floor, back after cross member laterally are welded in parallel between the floor side member, and floor, described back is welded on framework one side that floor, back front cross rail, floor, back center member, back floor after cross member and floor side member are welded into;

It is characterized in that: floor, described back front cross rail, back floor center member and floor side member all overlap each self-forming fully enclosed cross section structure with the floor, back.Further, the leading portion at described floor side member is welded with floor side member outside support plate.

The utility model H shape in the framework assembly of floor, back is arranged crossbeam and longeron; and reinforcement front cross rail, center member and floor side member; disperse impact force; reduce the distortion in the crew module simultaneously; make full use of whole lower body structure and bear impact force; thereby reduce degree of tortuosity, the protection occupant safety to the crew module.

At side impact, back floor front cross rail and back floor center member and floor, back overlap joint form fully enclosed heavy in section version, and arrange the reinforced rib of side direction, the quick dispersion of assurance energy simultaneously.Increase floor side member outside support plate, outside the crew module, absorb collision energy.Because floor, back center member is strengthened, can prevent that also spare tyre from impacting fuel tank.These measures improve the strength and stiffness of whole vehicle frame, have target minimizing body distortion.

The arrangement of parts of the technical program and structure; the car load side impact or after when bumping; the impact force of side or back evenly is passed to whole locomotive body; and effectively absorb energy; reduction is to the degree of tortuosity of operator's compartment and fuel tank, and the protection occupant safety has not only promoted impact force and evenly disperseed and the energy absorbing problem; also reduced punching press and welding sequence, cost and weight are also lower.

Description of drawings

Fig. 1 is an overall structure scheme drawing of the present utility model;

Fig. 2 A is the basic structure scheme drawing of floor, back front cross rail in the utility model;

Fig. 2 B is the section-drawing after floor, back front cross rail welds with the floor, back;

Fig. 3 A is the basic structure scheme drawing of floor, back center member in the utility model;

Fig. 3 B is the section-drawing after floor, back center member welds with the floor, back;

Fig. 4 A is the basic structure scheme drawing of floor side member in the utility model;

Fig. 4 B is the section-drawing after floor side member welds with the floor, back;

Fig. 5 A is the basic structure scheme drawing of floor side member outside support plate in the utility model;

Fig. 5 B is the section-drawing after floor side member outside support plate welds with floor, back, floor side member;

Wherein, floor front cross rail behind the 1-, floor center member behind the 2-, 3-floor side member outside support plate, 4-floor side member, floor behind the 5-, floor after cross member behind the 6-, 7-threshold inner panel.

The specific embodiment

Referring to Fig. 1, floor assembly comprises floor 5, back, floor side member 4, floor, back front cross rail 1, floor, back center member 2, back floor after cross member 6 and floor side member outside support plate 3 behind this baby car.Back floor front cross rail 1, floor, back center member 2 and floor, back after cross member 6 laterally are welded in parallel between the floor side member 4, and back floor 5 is welded on framework one side that floor, back front cross rail 1, floor, back center member 2, back floor after cross member 6 and floor side member 4 are welded into.Floor side member outside support plate 3 is welded on the leading portion of floor side member.

From Fig. 2 A, Fig. 2 B, Fig. 3 A and Fig. 3 B as can be seen, back floor front cross rail 1 and floor, back center member 2 all form fully enclosed cross section structure with floor, back 5 overlap joints.Equally, by Fig. 4 A and native 4B as seen, the side after

floor side member

4 and 5 welding of floor, back also is a full-closed structure.

Referring to Fig. 5 A and Fig. 5 B, the floor side member outside support plate 3 that is welded on floor side member 4 leading portions on the one hand and

floor side member

4 and 5 welding of floor, back, on the other hand again with threshold inner panel 7 overlap joints, form enclosed construction.

The layout and the design of part of above back floor crossmember and longeron; when bumping, the energy that produces is reasonably disperseed by vehicle body (particularly vehicle frame) and absorb; reduce crew module's distortion, thus solve side impact and after bump the low problem of safety performance, the safety of protection occupant and fuel tank.Therefore adopt above version, can improve the stiffness and strength of floor, back welding assembly, strengthen load-carrying capacity, effectively improve side impact and after the safety rate that bumps.

The welding process of this back floor assembly is: earlier floor side member 4 and floor side member outside support plate 3 are welded into the floor side member assembly, be welded into floor, back framework assembly with floor, back front cross rail 1, floor, back center member 2 and floor, back after cross member 6 again, be welded into floor, back welding assembly with floor 5, back at last.

Claims

1. automobile rear floor assembly, it is made up of back floor front cross rail (1), back floor center member (2), back floor after cross member (6), floor (5), back and floor side member (4); Described back floor front cross rail (1), back floor center member (2) and back floor after cross member (6) laterally are welded in parallel between the floor side member (4), and described floor, back (5) is welded on framework one side that back floor front cross rail (1), back floor center member (2), back floor after cross member (6) and floor side member (4) are welded into;

It is characterized in that: described back floor front cross rail (1), back floor center member (2), floor side member (4) all overlap each self-forming fully enclosed cross section structure with floor, back (5).

2. automobile rear floor assembly according to claim 1 is characterized in that, is welded with floor side member outside support plate (3) at the leading portion of described floor side member (4).