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CN-121990058-A - Vehicle front cabin reinforcing device and vehicle

CN121990058ACN 121990058 ACN121990058 ACN 121990058ACN-121990058-A

Abstract

The invention discloses a vehicle front cabin reinforcing device and a vehicle, and belongs to the field of vehicle body structure design and manufacture. The reinforcing device comprises a supporting main body formed by connecting a plurality of groups of tubular beams, wherein the supporting main body comprises a first cross beam, a second cross beam, a first connecting beam, a second connecting beam, a first extending beam and a second extending beam, wherein the first cross beam is suitable for being detachably connected with a fire wall, the second cross beam is consistent with the extending direction of the first cross beam, one side end part of the second cross beam is detachably connected with a left wheel cover, the other side end part of the second cross beam is detachably connected with a right wheel cover, the first connecting beam and the second connecting beam are symmetrically connected between the first cross beam and the second cross beam, the first extending beam and the second extending beam are symmetrically connected to one side, far away from the first cross beam, of the second cross beam, the end part of the first extending beam is detachably connected with the left wheel cover, and the end part of the second extending beam is detachably connected with the right wheel cover. The invention can obviously improve the torsional rigidity and bending rigidity of the front cabin, optimize the force transmission path under the working condition of small offset collision and improve the NVH performance.

Inventors

  • GUO QING
  • ZHOU CHANGKUAN

Assignees

  • 上汽通用汽车有限公司
  • 泛亚汽车技术中心有限公司

Dates

Publication Date
20260508
Application Date
20260320

Claims (10)

  1. 1. The utility model provides a vehicle front deck reinforcing apparatus which characterized in that includes the support main part that is formed by the connection of multiunit tubular beam, the support main part includes: The first cross beam is suitable for being detachably connected with the firewall; The second cross beam is consistent with the extension direction of the first cross beam, one side end part of the second cross beam is detachably connected with the left wheel cover, and the other side end part of the second cross beam is detachably connected with the right wheel cover; the first connecting beam and the second connecting beam are symmetrically connected between the first cross beam and the second cross beam; The first extension beam and the second extension beam are symmetrically connected to one side, far away from the first beam, of the second beam, the end part of the first extension beam is detachably connected with the left wheel cover, and the end part of the second extension beam is detachably connected with the right wheel cover.
  2. 2. The vehicle front cabin reinforcement device according to claim 1, wherein each beam body constituting the support body is provided with a clinching sleeve, and the support body is connected with the firewall, the left wheel cover, and the right wheel cover by screw fastening members penetrating through the clinching sleeves.
  3. 3. A vehicle front compartment reinforcement apparatus according to claim 1 or 2, wherein a center line of the first cross member and the second cross member in the extending direction forms a symmetrical center line of the support body, the first connecting beam and the second connecting beam are symmetrically disposed on both sides of the symmetrical center line, and the first extension beam and the second extension beam are symmetrically disposed on both sides of the symmetrical center line.
  4. 4. A vehicle front compartment reinforcement according to claim 3, wherein the first and second connection beams are connected to regions of the first cross member near the end portions, respectively.
  5. 5. A vehicle front compartment reinforcement apparatus according to claim 4, wherein a length between a connection position of the first connection beam and the second cross member to a connection position of the second connection beam and the second cross member is 1/4 to 1/3 of an entire length of the second cross member.
  6. 6. The vehicle front compartment reinforcement apparatus according to claim 5, wherein a length between a connection position of the first extension beam and the second cross member to a connection position of the second extension beam and the second cross member is 1/3 to 1/2 of an entire length of the second cross member, and free ends of the first extension beam and the second extension beam extend in a direction away from the center line of symmetry.
  7. 7. A vehicle front compartment reinforcement arrangement according to claim 6, characterized in that the angle between the first and second connection beams is larger than the angle between the first and second extension beams.
  8. 8. A vehicle front cabin reinforcement device according to claim 1 or 2, wherein an extending direction of the first cross member near the one side end face of the first connecting beam coincides with an extending direction of the first connecting beam, and an extending direction of the first cross member near the one side end face of the second connecting beam coincides with an extending direction of the second connecting beam.
  9. 9. A vehicle comprising a firewall, a left wheel cover, a right wheel cover and a vehicle front cabin reinforcement device according to any one of claims 1 to 8.
  10. 10. The vehicle of claim 9, wherein nuts are embedded in the connection areas of the firewall, the left wheel cover and the right wheel cover, and the support body is connected with the nuts by fastening screws penetrating through the rivet sleeves.

Description

Vehicle front cabin reinforcing device and vehicle Technical Field The invention relates to the field of vehicle body structure design and manufacture of vehicles, in particular to a reinforcing structure for a front cabin of a passenger car or a commercial vehicle. Background The automobile front cabin is used as a key bearing and function integration area of the whole automobile, integrates the core functions of a power system, a suspension, heat dissipation, collision energy absorption and the like, directly determines the arrangement rationality and the comprehensive performance standard condition of the whole automobile, and is a core link for guaranteeing the running safety and the driving comfort of the automobile. At present, the front cabin structure faces two key technical pain points, namely that NVH (noise vibration harshness) performance is easily deteriorated due to insufficient rigidity to influence driving experience, and collision energy is difficult to effectively disperse and control passenger cabin invasion amount in collision safety, particularly severe small offset collision. In order to solve the problems, various front cabin reinforcement schemes have been proposed in the industry, one of which is to adopt complex stamping and welding structural members, and although the manufacturing process is mature, the number of sheet metal parts is large, the input cost of a die tool is high, the welding process is complex, and the cost reduction and the efficiency improvement are not facilitated. In addition, the aluminum alloy is adopted for casting or forging the reinforcing piece, and the integrated die casting can realize weight reduction and production efficiency improvement, but casting defects such as shrinkage cavity and the like are easy to generate, the local rigidity is insufficient, the manufacturing difficulty is high, and the cost is high. And the special connecting process of expensive high-strength materials or laser welding, structural adhesive compounding and the like is adopted, so that the reinforcing effect can be improved, but the manufacturing cost is obviously increased, and the large-scale popularization and application are difficult. Disclosure of Invention The invention aims to solve the technical problems that the existing front cabin reinforcement scheme is generally complex in structure, high in process difficulty or high in cost, and therefore, the front cabin reinforcement device is simple in structure, mature in process and controllable in cost, and the rigidity and collision safety performance of the front cabin can be effectively improved. Aiming at the technical problems, the invention provides the following technical scheme: A vehicle front cabin reinforcing device comprises a supporting main body formed by connecting a plurality of groups of tubular beams, wherein the supporting main body comprises a first cross beam, a second cross beam, a first connecting beam, a second connecting beam, a first extending beam and a second extending beam, wherein the first cross beam is suitable for being detachably connected with a fire wall, the second cross beam is consistent with the extending direction of the first cross beam, one side end of the second cross beam is detachably connected with a left wheel cover, the other side end of the second cross beam is detachably connected with a right wheel cover, the first connecting beam and the second connecting beam are symmetrically connected between the first cross beam and the second cross beam, the first extending beam and the second extending beam are symmetrically connected to one side, far away from the first cross beam, of the second cross beam, the end of the first extending beam is detachably connected with the left wheel cover, and the end of the second extending beam is detachably connected with the right wheel cover. In some embodiments of the present invention, each beam body forming the supporting body is provided with a press-riveting sleeve, and the supporting body is connected with the firewall, the left wheel cover and the right wheel cover through threaded fastening assemblies penetrating through the press-riveting sleeves. In some embodiments of the present invention, a central line of the extending direction of the first beam and the second beam forms a symmetrical center line of the support body, the first connecting beam and the second connecting beam are symmetrically disposed on two sides of the symmetrical center line, and the first extension beam and the second extension beam are symmetrically disposed on two sides of the symmetrical center line. In some embodiments of the present invention, the first connecting beam and the second connecting beam are connected to a region of the first cross beam near an end portion, respectively. In some embodiments of the present invention, the length between the connection position of the first connecting beam and the second beam and the connection position o