CN202294636U

CN202294636U - Hierarchical bumper structure

Info

Publication number: CN202294636U
Application number: CN201120445031XU
Authority: CN
Inventors: 雷雨成; 陶安贞
Original assignee: Wuxi Tongjie Auto Design Co Ltd
Current assignee: Wuxi Tongjie Auto Design Co Ltd
Priority date: 2011-11-11
Filing date: 2011-11-11
Publication date: 2012-07-04
Anticipated expiration: 2021-11-11

Abstract

The utility model relates to a hierarchical bumper structure which comprises spaced front anticollision beam component and front longitudinal beam component, wherein two parallel steel plates are welded between the front anticollision beam component and the front longitudinal beam component, a welding seam between the two steel plates are segmented into a front part and a rear part to form a primary bumper and a secondary bumper. The hierarchical structure is adopted to separate the bumper into the primary bumper and the secondary bumper, and the application and protection ranges of the automobile bumper are increased. For passengers, the safety and the sense of security are increased. With the hierarchical bumper structure, pedestrians and automobiles can be best protected during low-speed collisions, and hospitalization for accidents and maintenance cost for automobile damages are lowered.

Description

Stagewise buffering bumper structure

Technical field

The utility model relates to the AE field, in particular for the stagewise buffering bumper structure of automobile buffering device.

Background technology

Federal bumper is the erecting device that absorbs the foreign impacts power that relaxes, protection vehicle body front and rear part; And bumper/spoiler has certain intensity, rigidity and ornamental; In order to reduce automobile injury to occupant and vehicle body when crashing, bumper/spoiler is installed usually, before and after auto body to strengthen the crashproof impulsive force of car; Play buffer action, the front and back car body of protection automobile and occupant's life safety.This method is practical, simple, and is little to the change of body structure, and has good safety performance.

At present, traditional buffering bumper structure is that two U templates or U template and a plate overlap joint form, and is simple in structure; Install with easy to make, but these two kinds of versions all are to adopt one-piece construction, when bumping; Sheet material integral body is stressed, bulk deformation, and also the front and back distortion is consistent; Also there is following shortcoming in the buffering thick stick of this one-piece construction:

(1) as automobile (speed of a motor vehicle is less than 10km/h) than low speed collision the time, because the intensity that the buffering thick stick can bear is limited, the buffering thick stick does not produce distortion, with regard to the out of reach buffer action, can't protect vehicle body and occupant yet.

(2) as automobile (speed of a motor vehicle 15km/h-25km/h) when the speed of a motor vehicle is higher; The intensity that integral type buffering thick stick can bear is lower; Be prone to cause the absorption institute collision energy that the intensity of buffering thick stick can not be enough, thereby vehicle body and occupant are caused bigger damage, potential safety hazard is big.

The utility model content

The applicant provides a kind of stagewise rational in infrastructure buffering bumper structure to the low shortcoming of integral type buffering thick stick collision ability in the above-mentioned prior art, thereby has enlarged vehicle body and occupant's protection domain, greatly reduces automobile maintenance cost in use.

The technical scheme that the utility model adopted is following:

A kind of stagewise buffering bumper structure; The front anti-collision beam assembly, the front side member assembly that comprise spacing distance; Be welded with two blocks of parallel steel plates between said front anti-collision beam assembly and the front side member assembly; Weld seam through welding between said two block plates is divided into front and back two parts, constitutes first-level buffer thick stick and level 2 buffering thick stick.Its further technical scheme is:

Said steel plate cross sectional shape becomes irregular concavo-convex, and the steel plate thickness at a said buffering thick stick place is less than the steel plate thickness at two buffering thick stick places;

Said steel plate can adopt dual phase steel;

Connect through laser assembly solder between said two block plates.

The beneficial effect of the utility model is following:

The utility model adopts hierarchical structure; Thick stick be will cushion and first-level buffer thick stick and level 2 buffering thick stick will be divided into; Increased the application and the protection domain of automatic buffer thick stick,, improved the safety and the sense of security the occupant; Make its protection in the automobile low speed collision reach optimum regime, the service expenditure of reduction accident medical expense and damage to a vehicle body to occupant and vehicle.

The utility model adopts laser assembly solder to connect between two block plates, and laser assembly solder is that butt joint connects rather than overlap joint to material, and less to the drawing performance influence of steel plate, and in welding process, the heat affected zone is little.

Description of drawings

Fig. 1 is the utility model structural representation.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the utility model is described.

As shown in Figure 1; The described stagewise buffering of the utility model bumper structure; The front anti-collision beam assembly 1, the front side member assembly 5 that comprise spacing distance are welded with two blocks of

parallel steel plates

2,4 between front anti-collision beam assembly 1 and the front side member assembly 5, connect through laser assembly solder between steel plate 2 and the steel plate 4; And two parts before and after being divided into by the weld seam 3 of institute's welding, constitute first-level buffer thick stick 7 and level 2 buffering thick stick 6; The cross sectional shape of steel plate 2 and steel plate 4 becomes irregular concavo-convex, is positioned at the thickness of the steel plate thickness at first-level buffer thick stick 7 places less than level 2 buffering thick stick 6 place's steel plates; The steel plate at first-level buffer thick stick 7 places adopts B240/390DP, and the steel plate at level 2 buffering thick stick 6 places adopts B340/590DP.

It is 0.8 mm-1.5mm that the first-level buffer thick stick adopts steel plate thickness; But the bearing strength scope is 200 MP-350MP; The steel plate thickness that the level 2 buffering thick stick adopts is 1.5 mm-2.5 mm; But the bearing strength scope is 350 MP-500 MP, and different automobile types was selected during the trade mark of steel plate materials and thickness can use according to reality.

Because the utility model has constituted first-level buffer thick stick and level 2 buffering thick stick; According to two-stage buffering thick stick material chosen; Make that to form certain intensity between the two-stage buffering thick stick poor, so that the control that can datumize to its energy absorption capacity, thereby increased the intensity field of application of buffering thick stick.

In the actual use, when front anti-collision beam assembly 1 bumps, if the collision dynamics is less; Then first-level buffer thick stick 7 is stressed and play buffer action; Cushion thick stick and have only first-level buffer thick stick 7 places to deform this moment, and level 2 buffering thick stick 6 does not deform, and makes vehicle body impaired less; If the collision dynamics is bigger, the size of power has surpassed the power that first-level buffer thick stick 7 can bear, and first-level buffer thick stick 7 buffering distortion earlier is delivered to level 2 buffering thick stick 6 again, makes level 2 buffering thick stick 6 stressed and play buffer action.

The utility model can make automobile adapt to and under the situation of different speed, realize its pooling feature to greatest extent.Improved to a great extent to the occupant, to the protection of automobile body and annex thereof.Reduce occupant's injured degree and the damage in the automobile low speed collision, further reduced the service expenditure that injured medical expense of people and automobile damage.

More than describing is the explanation to the utility model, is not the qualification to utility model, and the utility model institute restricted portion within the protection domain of the utility model, can be done any type of modification referring to claim.

Claims

1. a stagewise cushions bumper structure; It is characterized in that: the front anti-collision beam assembly, the front side member assembly that comprise spacing distance; Be welded with two blocks of parallel steel plates between said front anti-collision beam assembly and the front side member assembly; Weld seam through welding between said two block plates is divided into front and back two parts, constitutes first-level buffer thick stick and level 2 buffering thick stick.

2. stagewise buffering bumper structure as claimed in claim 1, it is characterized in that: said steel plate cross sectional shape becomes irregular concavo-convex, and the steel plate thickness at a said buffering thick stick place is less than the steel plate thickness at two buffering thick stick places.

3. according to claim 1 or claim 2 stagewise buffering bumper structure, it is characterized in that: said steel plate can adopt dual phase steel.

4. stagewise buffering bumper structure as claimed in claim 1 is characterized in that: connect through laser assembly solder between said two block plates.