CN104417617B - A kind of manufacture method of front longitudinal rear portion reinforcement structure - Google Patents

Abstract

The present invention provides a kind of front longitudinal rear portion reinforcement structure, including first crossbeam（1）With a pair of second cross beams（2）, wherein the first crossbeam（1）It is connected to left and right front longitudinal（4）Root（40）Between, the second cross beam（2）It is connected to the front longitudinal of homonymy（4）Root（40）With A posts（5）Between.The present invention makes first crossbeam be located at impact force delivery areas, can effectively resist and disperse impact force by setting first crossbeam between the root of left and right front longitudinal, reduces front panel intrusion volume.

Description

A method for manufacturing a rear reinforcement structure of a front longitudinal beam

technical field

The invention relates to the field of automobile body structures, in particular to a front longitudinal beam rear reinforcement structure and a manufacturing method thereof.

Background technique

During a frontal collision of a car, the front side member is the most important energy-absorbing component. How to resist and disperse the collision force and reduce the intrusion of the dash panel is the focus of the research on the front longitudinal beam structure. In the prior art, a cross beam is arranged above the rear part of the front longitudinal beam, and the two ends are respectively connected with the A-pillar, so as to resist the collision force. However, under this arrangement, the beam cannot effectively transmit the impact force to reduce the intrusion of the dash panel.

Contents of the invention

The technical problem to be solved by the present invention is to provide a rear reinforcement structure of the front longitudinal beam and a manufacturing method thereof which can effectively transmit the collision force and reduce the intrusion of the dash panel.

In order to solve the above technical problems, the present invention provides a rear reinforcement structure of the front longitudinal beam, which includes a first cross beam and a pair of second cross beams, wherein the first cross beam is connected between the roots of the left and right front longitudinal beams, and the The second cross beam is respectively connected between the root of the front longitudinal beam on the same side and the A-pillar.

Wherein, the first beam is located outside the dash panel.

Wherein, a pair of third beams are further included, respectively connected between the roots of the front longitudinal beams on the same side and the A-pillar, and overlapped with the second beams to form a closed section.

Wherein, the first crossbeam, the second crossbeam, and the third crossbeam are installed with the root of the front longitudinal beam through welding, and the second crossbeam and the third crossbeam are installed with the A-pillar through welding or bolts. The third beam is welded to the first beam at the root of the front longitudinal beam.

Wherein, the second beam is located inside the dash panel, and the third beam is located outside the dash panel.

The present invention also provides a method for manufacturing the rear reinforcement structure of the front longitudinal beam, comprising:

Step S1, respectively providing a first beam and a pair of second beams;

Step S2, respectively welding the first beam and the second beam to the dash panel;

Step S3, connecting the first beam between the roots of the left and right front longitudinal beams;

Step S4, connecting the second cross member between the root of the front side member on the same side and the A-pillar respectively.

Wherein, in the step S2, the first beam is located outside the dash panel.

Wherein, the step S1 also includes:

providing a pair of third beams;

Then, before the step S2, it also includes:

The third beam is welded to both ends of the first beam respectively.

Wherein, the step S2 also includes:

The third beam and the second beam are stacked and welded respectively to form a closed section.

Then the step S4 is specifically:

The second cross beam and the third cross beam stacked on each other are respectively connected between the root of the front longitudinal beam on the same side and the A-pillar.

Wherein, the first crossbeam, the second crossbeam, and the third crossbeam are installed with the root of the front longitudinal beam through welding, and the second crossbeam and the third crossbeam are installed with the A-pillar through welding or bolts. The second beam is located inside the dash panel, and the third beam is located outside the dash panel.

The rear reinforcement structure of the front longitudinal beam and its manufacturing method provided by the present invention can effectively resist and disperse collisions by arranging the first crossbeam between the roots of the left and right front longitudinal beams so that the first crossbeam is located in the collision force transmission area force, reducing the intrusion of the cowl panel.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a three-dimensional schematic diagram of a rear reinforcement structure of a front longitudinal beam according to an embodiment of the present invention.

Fig. 2 is a schematic plan view of a rear reinforcement structure of the front longitudinal beam according to an embodiment of the present invention.

Fig. 3 is a schematic front view of a rear reinforcement structure of a front longitudinal beam according to an embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view of FIG. 2 .

Fig. 5 is a schematic flow chart of the manufacturing method of the rear reinforcement structure of the front longitudinal beam according to the second embodiment of the present invention.

detailed description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

Please refer to Fig. 1, Embodiment 1 of the present invention provides a rear reinforcement structure of the front longitudinal beam, including a first crossbeam 1 and a pair of second crossbeams 2, wherein the first crossbeam 1 is connected to the left and right front longitudinal beams 4 Between the roots 40 and outside the dash panel 6 (see FIG. 4 ), the second cross member 2 is respectively connected between the roots 40 of the front longitudinal beam 4 on the same side and the A-pillar 5 . The first crossbeam 1 is installed with the root 40 of the front longitudinal beam 4 by welding, the second crossbeam 2 is also installed with the root 40 of the front longitudinal beam 4 and the A-pillar 5 respectively by welding, and the second crossbeam 2 can also be connected with the A-pillar by bolts 5 installation. The second cross member 2 is located inside the dash panel 6 .

Through the above-mentioned rear reinforcement structure of the front side beam, since the first cross beam 1 is arranged between the roots 40 of the left and right front side beams 4, the first cross beam 1 is located in the collision force transmission area, which is equivalent to being between the left and right front side beams. A collision force transmission channel is constructed between them, as shown by the arrow in Figure 2, when a frontal collision occurs, the collision force is transmitted from the front longitudinal beam 4 to the rear, and the first crossbeam 1 and the second crossbeam 2 can effectively resist the collision force, and The collision force is diffused to the entire body frame along the first beam 1 and the second beam 2 respectively, and the intrusion amount of the dash panel 6 is reduced. In addition, the first crossbeam 1 is located outside the dash panel 6, that is, the first crossbeam 1 is outside the passenger compartment. 1 It does not occupy the space of the passenger compartment, and will not affect the arrangement of the air conditioner, pedals, and steering column in the passenger compartment.

Please refer to Fig. 3 and Fig. 4 at the same time. In order to further enhance the effect of resisting impact and dispersing the impact force, a pair of third beams 3 are provided in this embodiment, which are respectively connected to the roots 40 and 40 of the front longitudinal beam 4 on the same side. Between the A-pillars 5 , they overlap with the second beam 2 to form a closed section. Specifically, the third beam 3 is respectively installed with the root 40 of the front longitudinal beam 4 and the A-pillar 5 by welding, and the third beam 3 can also be installed with the A-pillar 5 by bolts. The third beam 3 is welded to the first beam 1 at the root 40 of the front longitudinal beam 4 . The third cross member 3 is located outside the dash panel 6 .

The setting of the third crossbeam 3 further enhances the effect of resisting impact and dispersing the collision force, and because it is located outside the dash panel, it will effectively reduce the intrusion of the dash panel 6 and also strengthen the second crossbeam 2 .

Please refer to FIG. 5 , corresponding to the reinforcement structure at the rear of the front longitudinal beam in Embodiment 1 of the present invention, Embodiment 2 of the present invention provides a method for manufacturing the rear reinforcement structure of the front longitudinal beam, including:

Step S1, respectively providing a first beam 1 and a pair of second beams 2;

Step S2, respectively welding the first crossbeam 1 and the second crossbeam 2 to the dash panel 6;

Step S3, connecting the first cross member 1 between the roots 40 of the left and right front longitudinal members 4;

Step S4 , connecting the second cross member 2 between the root 40 of the front side member 4 on the same side and the A-pillar 5 respectively.

Wherein, in step S2 , the first beam 1 is located outside the dash panel 6 , and the second beam 2 is located inside the dash panel 6 . There is no sequence between steps S3 and S4. Specifically, the first crossbeam 1 is installed with the front longitudinal beam 4 by welding, and the second crossbeam 2 is also respectively installed with the front longitudinal beam 4 and the A-pillar 5 by welding, and the second crossbeam 2 can also be installed with the A-pillar 5 by bolts.

Since the first crossbeam 1 is arranged between the roots 40 of the left and right front side beams 4, the first crossbeam 1 is located in the collision force transmission area, which is equivalent to building a collision force transmission channel between the left and right front side beams, such as As shown by the arrows in Fig. 2, when a frontal collision occurs, the collision force is transmitted backward from the front longitudinal beam 4, the first crossbeam 1 and the second crossbeam 2 can effectively resist the collision force, and make the collision force along the first crossbeam 1 and the second crossbeam respectively. The two beams 2 diffuse to the entire body frame, reducing the intrusion of the dash panel 6 . In addition, the first crossbeam 1 is located outside the dash panel 6, that is, the first crossbeam 1 is outside the passenger compartment. 1 It does not occupy the space of the passenger compartment, and will not affect the arrangement of the air conditioner, pedals, and steering column in the passenger compartment.

In order to further enhance the effect of resisting impact and dispersing collision force, this embodiment also includes in step S1:

providing a pair of third beams 3;

Thus, before step S2, it also includes:

The third beam 3 is welded to both ends of the first beam 1 respectively.

Step S2 also includes:

The third beam 3 is stacked with the second beam 2 respectively and welded to form a closed section.

Step S4 is specifically: connecting the overlapping second beam 2 and the third beam 3 between the root 40 of the front side beam 4 on the same side and the A-pillar 5 respectively.

Specifically, the third beam 3 is respectively installed with the front longitudinal beam 4 and the A-pillar 5 by welding, and the third beam 3 can also be installed with the A-pillar 5 by bolts. The third beam 3 is welded to the first beam 1 at the root 40 of the front longitudinal beam 4 . The third cross member 3 is located outside the dash panel 6 .

The setting of the third beam 3 further enhances the effect of resisting impact and dispersing the collision force, and because it is located outside the dash panel 6, it will effectively reduce the intrusion of the dash panel 6, and also play a role in strengthening the second beam 2 .

The above disclosures are only preferred embodiments of the present invention, and certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (2)

1. a kind of manufacture method of front longitudinal rear portion reinforcement structure, including：

Step S1, provides first crossbeam respectively（1）, a pair of second cross beams（2）With a pair of the 3rd crossbeams（3）, it is horizontal by the described 3rd Beam（3）It is respectively welded at the first crossbeam（1）Two ends；

Step S2, respectively by the first crossbeam（1）And second cross beam（2）With front panel（6）Welding, the first crossbeam（1） Positioned at the front panel（6）Outside, by the 3rd crossbeam（3）Respectively with the second cross beam（2）It is superposed and weld, shape Into closed cross-section；

Step S3, by the first crossbeam（1）It is connected to left and right front longitudinal（4）Root（40）Between；

Step S4, by the superposed second cross beam（2）With the 3rd crossbeam（3）It is connected to the front longitudinal of homonymy （4）Root（40）With A posts（5）Between.

2. manufacture method according to claim 1, it is characterised in that the first crossbeam（1）, second cross beam（2）, the 3rd Crossbeam（3）Pass through welding and the front longitudinal（4）Root（40）Install, the second cross beam（2）, the 3rd crossbeam（3） Pass through welding or bolt and the A posts（5）Install, the second cross beam（2）Positioned at the front panel（6）Within, the described 3rd Crossbeam（3）Positioned at the front panel（6）Outside.