CN-121990060-A - Fixing structure and mounting method of automobile instrument beam

CN121990060ACN 121990060 ACN121990060 ACN 121990060ACN-121990060-A

Abstract

The invention relates to the technical field of automobiles, in particular to a fixing structure and an installation method of an automobile instrument beam. The fixing structure comprises a front wall support, a beam body and a supporting component, wherein the front wall support comprises a cover body and a connecting part, the connecting part is located on the periphery of the cover body and fixedly installed on the inner side of the front wall of a vehicle body, one side of the cover body is opened, a containing cavity is formed between the connecting part and the front wall of the vehicle body, the front end of the beam body is installed on the cover body of the front wall support through a connecting piece, end plates are arranged at two ends of the beam body and fixedly connected with the vehicle body, the upper end of the supporting component is installed at the lower end of the middle of the beam body, and the lower end of the supporting component is installed on a lower floor of the vehicle body. Through this structure need not to set up any installation via hole on the automobile body front wall, has eliminated rainwater, noise and corrosive medium and has passed through the route of installation Kong Qinru cockpit to form multiple spot, multidirectional fixed mode, local rigidity obtains promoting, is favorable to improving the NVH performance of whole car.

Inventors

DAI LIHONG
ZHANG JIAHAO
JIN JIANFAN

Assignees

奇瑞汽车股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260320

Claims (10)

1. The fixing structure of the automobile instrument cross beam is characterized by comprising a front wall bracket, a cross beam body and a supporting component; The front wall support comprises a cover body and a connecting part, wherein the connecting part is positioned at the periphery of the cover body and fixedly arranged at the inner side of the front wall of the vehicle body, one side of the cover body is opened, and a containing cavity is formed between the cover body and the front wall of the vehicle body; the front end of the beam body is arranged on the cover body of the front wall bracket through a connecting piece, the two ends of the beam body are provided with end plates, and the end plates are fixedly connected with the vehicle body; the upper end of the supporting component is arranged at the lower end of the middle part of the beam body, and the lower end of the supporting component is arranged on the underfloor of the car body.
2. The fixing structure of the automobile instrument beam according to claim 1, wherein the connecting portion of the cover body is attached to the inner wall of the front wall of the automobile body and fixedly connected by bonding and/or welding.
3. The fixing structure of the automobile instrument beam according to claim 1, wherein the connecting piece comprises a bolt and a nut, the front wall support is provided with a through hole, the bolt is inserted into the through hole of the front wall support, and the nut is located in the containing cavity and is mounted on the bolt.
4. The fixing structure of the automobile instrument beam according to claim 3, wherein the front end of the beam body is provided with a mounting frame, the front side of the mounting frame is provided with a fixing plate, the fixing plate is provided with a mounting hole, the rear side of the fixing plate is provided with a cavity, and the bolts are inserted into the mounting hole of the fixing plate and the through holes of the front wall support.
5. The fixing structure of the automobile instrument beam according to claim 4, wherein the front end face of the fixing plate is tightly attached to the cover body of the front wall bracket, and the cavity and the accommodating cavity are provided with downward openings.
6. The fixing structure of the automobile instrument beam according to claim 1, wherein the end plates at both ends of the beam body are respectively connected with the left inner door ring and the right inner door ring of the automobile body by bolts.
7. The fixing structure of the automobile instrument beam according to claim 1, wherein the supporting assembly comprises a left floor bracket and a right floor bracket, the beam body has a mounting portion extending downward, upper ends of the left floor bracket and the right floor bracket are respectively mounted on left and right sides of the mounting portion by bolts, and upper ends of the left floor bracket and the right floor bracket are respectively mounted on left and right sides of the channel in the under floor of the automobile body by bolts.
8. The fixing structure of a cross beam of an automobile instrument according to claim 1, wherein the cross beam body is injection-molded by steel-plastic inserts and galvanized.
9. The automobile instrument beam installation method is characterized by comprising the following steps of: the front wall support is arranged at the front end of the beam body, so that the pre-assembly of the beam body and the front wall support is completed, and an integrated assembly is formed; Hoisting the integrated assembly into a vehicle body cockpit, and respectively positioning end plates at two ends of the beam body with a left inner door ring and a right inner door ring of the vehicle body to finish coarse positioning of the beam body on the vehicle body; Attaching the connecting part of the front wall bracket to the inner side of the front wall of the vehicle body and compositely fixing the connecting part and the front wall of the vehicle body in a state that the integrated assembly is kept to be positioned; The end plates at two ends of the beam body are respectively and tightly connected with the left inner door ring and the right inner door ring, the upper end of the supporting component is arranged at the lower end of the middle part of the beam body, and the lower end of the supporting component is arranged on the underfloor of the car body.
10. The method for mounting a cross beam of an automobile instrument according to claim 9, wherein the step of compositely fixing the connecting portion and the front periphery of the automobile body comprises the steps of coating structural adhesive on the joint surface of the connecting portion and the front periphery of the automobile body, and performing local spot welding at the corner positions of the connecting portion.

Description

Fixing structure and mounting method of automobile instrument beam Technical Field The invention relates to the technical field of automobiles, in particular to a fixing structure and an installation method of an automobile instrument beam. Background The automobile instrument cross member is a core support in the cockpit, and is usually disposed in the front portion of the cockpit in the vehicle width direction. At present, the instrument beam is fixed with the front wall of the automobile body by bolts in a penetrating way, namely, through holes are preset in the front wall metal plate, and bolts penetrate through the through holes from one side of the cockpit and are screwed into the front end of the beam. The integrity of the front wall of the automobile body is damaged by the mode of fixing the open holes, the installation holes can be glued and sealed, but after long-term use, the glue layer is easy to age and crack, and the risk of intrusion of rainwater and noise exists. Secondly, enclose the trompil before having weakened the continuity of automobile body panel beating, the hole site edge easily becomes the corrosion initiation point, and the direct cantilever type lock in crossbeam front end attaches on enclose the panel beating before, and local mounting point rigidity is limited, produces adverse effect to whole car NVH performance. Disclosure of Invention Aiming at the defects existing in the prior art, the embodiment of the invention aims to provide a fixing structure and an installation method of an automobile instrument beam, so as to solve the problems that in the prior art, the sealing reliability is insufficient and the connecting structure has adverse effect on the whole automobile performance due to the opening of the front wall of an automobile body. In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: a fixing structure of a cross beam of an automobile instrument comprises a front wall support, a cross beam body and a supporting component, wherein the front wall support comprises a cover body and a connecting part, the connecting part is located on the periphery of the cover body and fixedly installed on the inner side of the front wall of an automobile body, one side of the cover body is opened, a containing cavity is formed between the cover body and the front wall of the automobile body, the front end of the cross beam body is installed on the cover body of the front wall support through a connecting piece, end plates are arranged at two ends of the cross beam body and fixedly connected with the automobile body, the upper end of the supporting component is installed at the lower end of the middle of the cross beam body, and the lower end of the supporting component is installed on an under-automobile-body floor. Optionally, the connecting part of the cover body is attached to the inner wall of the front wall of the vehicle body and is fixedly connected through bonding and/or welding. Optionally, the connecting piece includes bolt and nut, the through-hole has been seted up on the preceding wall support, the bolt is pegged graft in the through-hole of preceding wall support, the nut is located hold the chamber and install on the bolt. Optionally, the front end of crossbeam body is provided with the mounting bracket, the front side of mounting bracket has the fixed plate, the mounting hole has been seted up on the fixed plate, and the rear side of fixed plate has the cavity, the bolt is pegged graft in the through-hole of the mounting hole of fixed plate and preceding surrounding support. Optionally, the front end face of the fixing plate is clung to the cover body of the front wall bracket, and the cavity and the accommodating cavity are provided with downward openings. Optionally, the end plates at two ends of the beam body are respectively connected with a left inner door ring and a right inner door ring of the car body through bolts. Optionally, the support assembly includes left floor support and right floor support, the crossbeam body has downwardly extending's installation department, left floor support and right floor support's upper end is installed respectively in the left and right sides of installation department through the bolt, and left floor support and right floor support's upper end is installed respectively in the left and right sides of the upper middle passageway of automobile body underfloor through the bolt. Optionally, the beam body is formed by steel-plastic insert injection molding and galvanized. The embodiment of the invention also provides an automobile instrument beam installation method, which comprises the following steps: the front wall support is arranged at the front end of the beam body, so that the pre-assembly of the beam body and the front wall support is completed, and an integrated assembly is formed; Hoisting the integrated assembly into a vehicle body cockpit, and respectiv