CN108423077B - Connection structure of stiffening beam and side wall assembly on front wheel casing - Google Patents

Abstract

The present invention provides a connection structure of the reinforcing beam on the front wheel cover and the side wall assembly, which solves the problem of _CO2 welding point welding or partial sheet metal cracking in the traditional structure, improves the safety of the vehicle body and customer satisfaction, and reduces the Bike manufacturing cost. The connecting structure includes a front wheel house reinforcement beam, side wall outer panel, A-pillar lower reinforcement plate and A-pillar upper hinge reinforcement plate, which are sequentially attached from the outside to the inside. The A-pillar lower reinforcement plate and the A-pillar upper hinge reinforcement plate pass through The A-pillar lower reinforcement plate assembly is formed by welding, which is characterized in that the upper hinge reinforcement plate of the A-pillar is provided with welding through holes, and the welding tongs pass the welding through holes to the front wheel cover reinforcement beam and the side wall outer plate. It is connected with the lower reinforcement plate assembly of the A-pillar and connected by spot welding.

Description

A connection structure of a reinforcing beam on a front wheel cover and a side wall assembly

technical field

The invention relates to the technical field of automobile body structures, in particular to a connection structure of a reinforcing beam on a front wheel cover and a side wall assembly.

Background technique

At present, the reinforcing beam on the front wheel cover of the automobile is the final process of the skeleton, and it is welded together with the side wall assembly by CO ₂ through its own plug welding hole. Its structure is shown in Figures 1 and 2. The upper hinge reinforcement plate 3 of the A-pillar and the lower reinforcement plate 4 of the A-pillar are connected by spot welding to form the A-pillar lower reinforcement plate assembly, the A-pillar lower reinforcement plate assembly and the side wall outer plate. The spot welding connection is realized through the welding point a of the three-layer plate to form the side wall outer plate assembly. The three-layer plate welding place is the upper hinge reinforcement plate 3 of the A-pillar, the lower reinforcement plate 4 of the A-pillar and the side wall outer plate 2 to form three layers. Then, leave a gap of about 0.5mm between the reinforcement beam on the front wheel cover and the side wall outer plate 2 at the position a of the three-layer plate welding to reduce the Y-direction deviation during the skeleton welding process. Finally, at the _CO2 station of the skeleton, through the CO2 plug welding hole 10, the reinforcing beam 1 on the front wheel cover and the side wall assembly are welded together to form the body frame. The material thickness of the side panel outer panel is generally 0.7mm. During the welding process, it is easy to burn through the side panel outer panel or become brittle locally. During the driving process of the vehicle, the external force brought by the road surface to the body will cause CO ₂ . Welding or partial sheet metal cracking may cause abnormal noise or even sheet metal corrosion, reduce the safety of the body and reduce customer satisfaction. CO ₂ welding requires planning of welding equipment, welding stations, and personnel operations. The increase in manufacturing man-hours leads to an increase in the cost of single-vehicle manufacturing.

SUMMARY OF THE INVENTION

The purpose of the present invention is to propose a connection structure of the reinforcing beam on the front wheel cover and the side wall assembly, which solves the problems of _CO2 welding point welding or partial sheet metal cracking in the traditional structure, improves the safety of the car body and the satisfaction of customers, And reduce the cost of bicycle manufacturing.

The connection structure of the front wheel house upper reinforcement beam and the side wall assembly provided according to the present invention includes the front wheel house reinforcement beam, the side wall outer plate, the A-pillar lower reinforcement plate and the A-pillar upper hinge, which are sequentially fitted from outside to inside. The reinforcement plate, the A-pillar lower reinforcement plate and the A-pillar upper hinge reinforcement plate are connected by spot welding to form the A-pillar lower reinforcement plate assembly. The welding vias connect the front wheel house reinforcing beam, the side wall outer plate and the A-pillar lower reinforcing plate assembly together and are connected by spot welding.

In the present invention, a welding through hole is arranged on the upper hinge reinforcement plate of the A column, and the welding tongs connect the front wheel cover reinforcement beam, the side wall outer plate and the lower reinforcement plate assembly of the A column together through the welding through hole, and are connected by spot welding, In this way, the three-layer spot welding connection of the front wheel cover reinforcing beam, the side wall outer plate and the A-pillar lower reinforcing plate assembly is realized. During the driving process of the vehicle, the external force brought by the road surface to the body passes through the three-layer plate welding point here. It is transmitted to the side wall assembly to realize the effective transmission of force and reduce the force here. It can be seen that the present invention solves the problem that spot welding of the reinforcing beam on the front wheel cover and the side wall outer plate assembly cannot be realized in the traditional skeleton structure, avoids the problem of welding spot welding or partial sheet metal cracking caused by CO ₂ , and also It avoids the quality problem of CO ₂ welding, improves productivity, shortens the production cycle, and reduces the cost of single-vehicle manufacturing.

Further, the welding via holes are arranged in the overlapping area of the front wheel house reinforcing beam along the x-direction, so as to ensure the effective transmission of the force at the welding point of the three-layer board.

Further, the welding via holes are provided with a plurality of uniform gaps along the z-direction, so as to ensure the welding quality.

Further, the z-direction edge of the overlapping area of the front wheel house reinforcing beam is wavy, and the wave crest area enclosed by the wavy edge corresponds to the position of the welding via hole. Such a structure can ensure that the welding part of the three-layer board has a certain crushing energy absorption effect, reduce collision deformation, and improve safety.

Further, the upper hinge reinforcement plate of the A-pillar is provided with a lap joint that cooperates with the lower reinforcement plate of the A-pillar in the y direction, so as to enhance the structural reinforcement of the upper hinge reinforcement plate of the A-pillar.

Further, a bending transition is provided between the overlapping area of the front wheel house reinforcing beam and the x-direction front end of the front wheel house reinforcing beam, so that the lap joint of the front wheel house reinforcing beam has a certain collision pressure. Crash energy effect.

Specifically, the front wheel house reinforcement beam, the side wall outer plate, the A-pillar lower reinforcement plate and the A-pillar upper hinge reinforcement plate are all stamped and formed.

Description of drawings

FIG. 1 is a schematic diagram of the connection structure of the reinforcing beam on the traditional front wheel cover and the side wall assembly.

FIG. 2 is an enlarged view of a partial structure of FIG. 1 .

FIG. 3 is a schematic diagram of the connection structure of the reinforcement beam on the front wheel cover and the side wall assembly of the present invention.

FIG. 4 is an enlarged view of a partial structure of FIG. 3 .

FIG. 5 is a schematic diagram of the partial structure of the y-direction overlapping area of the reinforcing beam on the front wheel cover.

Detailed ways

With reference to the accompanying drawings, the specific embodiments of the present invention, such as the shape and structure of each component involved, the mutual position and connection relationship between each part, the function and working principle of each part, etc. detailed description.

As shown in Figures 3 and 4, the connection structure of the front wheel cover upper reinforcement beam and the side wall assembly of the present invention includes the front wheel cover reinforcement beam 1, the side wall outer plate 2, and the reinforcement under the A-pillar, which are sequentially attached from the outside to the inside. Plate 3 and A-pillar upper hinge reinforcement plate 4, A-pillar lower reinforcement plate 3 and A-pillar upper hinge reinforcement plate 4 are connected by spot welding to form A-pillar lower reinforcement plate assembly, A-pillar upper hinge reinforcement plate is provided with welding through holes 41. The welding tongs connect the front wheel house reinforcement beam 1, the side wall outer plate 2 and the A-pillar lower reinforcement plate assembly together through the welding through hole 41 and connect them by spot welding.

In the present invention, a welding through hole 41 is provided on the hinge reinforcement plate 4 on the A-pillar, and the welding tongs connect the front wheel house reinforcement beam 1, the side wall outer plate 2 and the A-pillar lower reinforcement plate assembly together through the welding through hole 41. Through spot welding connection, the three-layer plate spot welding connection of front wheel cover reinforcement beam 1, side wall outer panel 2 and A-pillar lower reinforcement plate assembly is realized. Here, the welding point b of the three-layer board is transmitted to the side wall assembly to realize the effective transmission of force and reduce the force here. It can be seen that the present invention solves the problem that spot welding of the reinforcing beam on the front wheel cover and the side wall outer plate assembly cannot be realized in the traditional skeleton structure, avoids the problem of welding spot welding or partial sheet metal cracking caused by CO ₂ , and also It avoids the quality problem of CO ₂ welding, improves productivity, shortens the production cycle, and reduces the cost of single-vehicle manufacturing.

As a preferred embodiment, the welding through holes 41 are arranged in the overlapping area of the front wheel house reinforcing beam 1 along the x-direction, so as to ensure the effective transmission of the force at the welding point of the three-layer board.

Preferably, a plurality of welding vias 41 are provided with uniform gaps along the z-direction to ensure welding quality.

Preferably, the z-direction edge of the overlapping area of the front wheel house reinforcing beam 1 is wavy, and the wave crest area surrounded by the wavy edge corresponds to the position of the welding via 41 , as shown in FIG. 5 . Such a structure can ensure that the welding part b of the three-layer board has a certain effect of crushing energy absorption, reducing collision deformation and improving safety.

Preferably, the upper hinge reinforcement plate 4 of the A-pillar is provided with a lap edge 42 that cooperates with the lower reinforcement plate of the A-pillar 3 along the y direction, so as to enhance the structural reinforcement of the upper hinge reinforcement plate 4 of the A-pillar.

Preferably, a bending transition 11 is provided between the overlapping area of the front wheel house reinforcing beam 1 and the front end of the front wheel house reinforcing beam 1 in the x direction, so that the lap joint of the front wheel house reinforcing beam 1 has a certain collision pressure Crash energy effect.

Specifically, the front wheel house reinforcement beam 1 , the side wall outer plate 2 , the A-pillar lower reinforcement plate 3 and the A-pillar upper hinge reinforcement plate 4 are all stamped and formed.

Claims (4)

1. A connection structure of a reinforcement beam on a front wheel cover and a side wall assembly, comprising a front wheel cover reinforcement beam, a side wall outer panel, a lower reinforcement plate for an A-pillar, and an upper hinge reinforcement for the A-pillar that are sequentially fitted from outside to inside Plate, A-pillar lower reinforcement plate and A-pillar upper hinge reinforcement plate are connected by spot welding to form A-pillar lower reinforcement plate assembly, which is characterized in that the A-pillar upper hinge reinforcement plate is provided with welding through holes, and the welding tongs pass through the A-pillar upper hinge reinforcement plate. Welded vias connect the front wheel house reinforcing beam, the side panel outer panel and the A-pillar lower reinforcing plate assembly together and are connected by spot welding, and the welding vias are arranged on the front wheel house reinforcing beam along the x-direction. In the overlapping area of the front wheel house, the welding via holes are provided with a plurality of them and are arranged along the z-direction with a uniform gap. The regions correspond to the locations of the solder vias. 2. The connection structure of the front wheel house upper reinforcing beam and the side wall assembly according to claim 1, characterized in that the A-pillar upper hinge reinforcing plate is provided with a y-direction that cooperates with the A-pillar lower reinforcing plate. Lap edge. 3 . The connection structure of the reinforcing beam on the front wheel house and the side wall assembly according to claim 2 , wherein the overlapping area of the reinforcing beam of the front wheel house and the front end of the front wheel house in the x direction of the reinforcing beam There are bend transitions in between. 4. The connection structure of the front wheel house upper reinforcement beam and the side wall assembly according to claim 3, wherein the front wheel house reinforcement beam, the side wall outer plate, the A-pillar lower reinforcement plate and the A-pillar upper hinge Reinforcing plates are stamped and formed.

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