CN106828608B

CN106828608B - B post upper joint structure

Info

Publication number: CN106828608B
Application number: CN201611259933.8A
Authority: CN
Inventors: 钟巧波; 刘洋; 韦超忠; 郑勇新; 陆好源
Original assignee: SAIC GM Wuling Automobile Co Ltd
Current assignee: SAIC GM Wuling Automobile Co Ltd
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2024-03-15
Anticipated expiration: 2036-12-30
Also published as: CN106828608A

Abstract

The invention provides a B-pillar upper joint structure which comprises a side wall outer plate, an A-pillar upper reinforcing plate, a B-pillar reinforcing plate and an upper boundary beam inner plate, wherein the A-pillar upper reinforcing plate and the B-pillar reinforcing plate are arranged between the side wall outer plate and the upper boundary beam inner plate, one end of the A-pillar upper reinforcing plate is overlapped with one end of the B-pillar reinforcing plate, a first notch is arranged at the lower part of the A-pillar upper reinforcing plate at the overlapped part, a second notch is arranged at the upper part of the B-pillar reinforcing plate at the overlapped part, the upper part of the side wall outer plate, the upper reinforcing plate of the A-pillar and the upper boundary beam inner plate are overlapped together, and the lower part of the side wall outer plate, the lower part of the B-pillar reinforcing plate and the lower part of the upper boundary beam inner plate are overlapped together. The lower part of the reinforcing plate on the A column is provided with the first notch, and the upper part of the reinforcing plate on the B column is provided with the second notch, so that four layers of welding can be avoided, the lap joint notches are asymmetrically arranged, the number of the lap joint notches is reduced, the stress concentration at the notch is reduced, and the reinforcing plate on the B column is bonded with the reinforcing plate on the A column, so that the rigidity continuity of the reinforcing plate is improved.

Description

B post upper joint structure

Technical Field

The invention relates to the field of automobile bodies, in particular to a B-pillar upper joint structure.

Background

As shown in fig. 1 to 6, the B pillar upper joint is an important lap joint structure of a vehicle body, a structural cavity is formed by an inner plate and an outer plate, structural rigidity and strength are enhanced by taking a reinforcing plate as a framework, the quality of joint rigidity/strength directly influences the offset collision safety performance, and the torsion rigidity of the whole vehicle and the opening rigidity of a door frame, and the structure generally comprises a side wall outer plate, an a pillar upper reinforcing plate, a B pillar reinforcing plate, an upper side beam inner plate and a B pillar inner plate;

the welding edges of the lap joint positions of the reinforcing plates on the A column and the reinforcing plates on the B column are made into sawtooth structures which are vertically symmetrical in order to avoid four layers of welding, so that certain stress concentration exists at the notch, the lap joint width is increased, and the blanking size is increased;

the overlapping part of the A/B column reinforcing plate cannot be welded, the cavity is used as a sectional form, and the rigidity is discontinuous.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a B-pillar upper joint structure.

The invention provides a B-pillar upper joint structure which comprises a side wall outer plate, an A-pillar upper reinforcing plate, a B-pillar reinforcing plate and an upper boundary beam inner plate, wherein the A-pillar upper reinforcing plate and the B-pillar reinforcing plate are arranged between the side wall outer plate and the upper boundary beam inner plate, one end of the A-pillar upper reinforcing plate is overlapped with one end of the B-pillar reinforcing plate, a first notch is arranged at the lower part of the A-pillar upper reinforcing plate at the overlapped part, a second notch is arranged at the upper part of the B-pillar reinforcing plate at the overlapped part, the upper part of the side wall outer plate, the upper A-pillar reinforcing plate and the upper boundary beam inner plate are overlapped together, and the lower part of the side wall outer plate, the lower part of the B-pillar reinforcing plate and the lower part of the upper boundary beam inner plate are overlapped together.

As a further improvement of the invention, the molded surface of the B column reinforcing plate is the same as that of the A column reinforcing plate, and the lap joint part is also provided with a glue layer.

As a further improvement of the invention, the B-pillar upper joint structure further comprises a B-pillar inner plate, wherein the upper part of the B-pillar inner plate is overlapped with the lower part of the upper boundary beam inner plate, the B-pillar inner plate is provided with a fillet overlap joint part, and the fillet overlap joint part is provided with two layers of welding spots and three layers of welding spots.

The beneficial effects of the invention are as follows: the lower part of the reinforcing plate on the A column is provided with the first notch, and the upper part of the reinforcing plate on the B column is provided with the second notch, so that four layers of welding can be avoided, the lap joint notches are asymmetrically arranged, the number of the lap joint notches is reduced, the stress concentration at the notch is reduced, the molded surface of the reinforcing plate on the B column is the same as that of the reinforcing plate on the A column, and the lap joint is also provided with the adhesive layer, so that the reinforcing plate on the B column and the reinforcing plate on the A column are bonded together, and the rigidity continuity of the reinforcing plate is improved.

Drawings

FIG. 1 is a schematic structural view of a prior art B-pillar upper joint structure;

FIG. 2 is a schematic illustration of the construction of the A/B pillar reinforcement panel lap joint of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a cross-sectional view of B-B in FIG. 2;

FIG. 5 is a schematic structural view of the A-pillar roof side rail inner panel of FIG. 1;

FIG. 6 is a schematic view of a prior art weld arrangement of a roof rail inner panel and a B-pillar inner panel;

FIG. 7 is a schematic structural view of the B-pillar upper joint structure of the present invention;

FIG. 8 is a schematic view of the structure of the A/B column reinforcement plate lap joint of the present invention;

FIG. 9 is a cross-sectional view of D-D of FIG. 8;

FIG. 10 is a schematic structural view of the A-pillar roof side rail inner panel of the present invention;

FIG. 11 is a schematic view of the weld placement of the roof rail inner panel and the B-pillar inner panel of the present invention.

Detailed Description

1-side wall planking 2-A post upper reinforcement plate 3-B post reinforcement plate 4-upper boundary beam inner plate 5-B post inner plate 21-first gap 31-second gap 7-glue layer 8-two-layer welding point 9-three-layer welding point.

As shown in fig. 7 to 11, the invention discloses a B-pillar upper joint structure, which comprises a side wall outer plate 1, an a-pillar upper reinforcing plate 2, a B-pillar reinforcing plate 3 and an upper side beam inner plate 4, wherein the a-pillar upper reinforcing plate 2 and the B-pillar reinforcing plate 3 are arranged between the side wall outer plate 1 and the upper side beam inner plate 4, one end of the a-pillar upper reinforcing plate 2 is overlapped with one end of the B-pillar reinforcing plate 3, a first notch 21 is arranged at the lower part of the a-pillar upper reinforcing plate 2 at the overlapped part, a second notch 31 is arranged at the upper part of the B-pillar reinforcing plate 3 at the overlapped part, the upper part of the side wall outer plate 1, the a-pillar upper reinforcing plate 2 and the upper side beam inner plate 4 are overlapped together, the lower part of the a-pillar upper reinforcing plate 2 is notched, the upper part of the B-pillar reinforcing plate 3 is notched, and the upper side beam inner plate 4 are lapped together, the overlapping four layers are welded, so that the overlapping notches are asymmetrically arranged, the number of overlapping notches is reduced, the number of overlapping notches can be reduced, the width of the overlapping joint of the upper reinforcing plate can be reduced, and the width of the overlapping joint of the upper joint can be reduced, and the size of the upper joint of the B-pillar is reduced, and the width of the upper joint is reduced.

The molded surface of the B column reinforcing plate 3 is the same as that of the A column upper reinforcing plate 2, and the lap joint is further provided with a glue layer 7, the B column reinforcing plate 3 is attached to the molded surface of the A column upper reinforcing plate 2, and the B column reinforcing plate 3 is connected with the A column upper reinforcing plate by structural glue, so that the rigidity continuity is improved, the rigidity of the B column upper joint is improved, and the overall rigidity of a vehicle body is improved.

This B post upper joint structure still includes B post inner panel 5, B post inner panel 5 upper portion with 4 lower part overlap joints of roof side rail inner panel, B post inner panel 5 is equipped with fillet overlap joint portion, just fillet overlap joint portion is equipped with two-layer solder joint and three-layer solder joint, has avoided four-layer solder joint of fillet department, has not only reduced the risk of disengaging like this, does not still need to set up the protrusion overlap joint limit with fillet overlap joint portion adaptation at roof side rail inner panel 4 moreover, has saved the material, and the width of B post inner panel 5 has still been shortened to this structure, has reduced the unloading size and has reduced the cost.

The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.

Claims

1. A B post upper joint structure, its characterized in that: including side wall planking, A post go up reinforcing plate, B post reinforcing plate and roof side rail inner panel, A post go up reinforcing plate with B post reinforcing plate locates the side wall planking with between the roof side rail inner panel, A post go up reinforcing plate one end with B post reinforcing plate one end overlap joint, and overlap joint department the reinforcing plate lower part is equipped with first breach, overlap joint department on the A post be equipped with the second breach on B post reinforcing plate upper portion, side wall planking upper portion, A post go up reinforcing plate and roof side rail inner panel upper portion overlap joint together, side wall planking lower part, B post reinforcing plate and roof side rail inner panel lower part overlap joint are together, B post reinforcing plate with the profile of A post go up reinforcing plate the same, and overlap joint department still is equipped with the glue film, this B post upper joint structure still includes the B post inner panel upper portion with roof side rail inner panel lower part overlap joint, the B post inner panel is equipped with fillet overlap joint portion, just fillet overlap joint portion is equipped with two-layer and three-layer.