CN106892000B - Car front wall structure - Google Patents

Abstract

The invention relates to the field of automobiles, and discloses an automobile front wall structure which comprises a front wall plate, a beam assembly and a water guide plate, wherein the front wall plate is of an integrated structure, the upper end of the front wall plate is lapped to the lower edge of the beam assembly and is welded with the lower edge of the beam assembly, and the water guide plate is positioned below the beam assembly and is welded with the outer side surface of the front wall plate. According to the invention, the upper end of the front coaming is welded with the beam assembly after being lapped, compared with the existing mode that the front coaming is welded with the beam through the front coaming reinforcing plate, a row of welding spots are saved, the welding cost is reduced, the welding edge between the front coaming and the beam assembly is easy to glue, the front coaming is of an integrated structure, the water guide plate is welded on the outer side surface of the front coaming, water in the water guide plate cannot leak to the inner side of the front coaming, glue does not need to be added to the welding edge of the water guide plate and the front coaming, a gluing process is saved, and the risk of water inflow is greatly reduced.

Description

Car front wall structure

technical field

The invention relates to the field of automobiles, in particular to an automobile front wall structure.

Background technique

The front wall assembly is located between the passenger compartment and the engine compartment. Both of them have an urgent need for space. At the same time, the OEM has to compress the length, width and height of the vehicle from the perspective of cost and shape. In this case, the front wall assembly also needs to meet the basic functions of sound insulation, heat insulation, force transmission and driver protection, and the space requirement cannot be infinitely compressed.

Currently on the market, the front wall assembly structure is basically composed of a front wall panel and a front wall frame. The front wall is divided into integral type and split type, and the front wall frame is divided into built-in type, external type and internal and external mixed type.

As shown in FIG. 1 and FIG. 2 , the connection between the dash panel 100 , the beam assembly 200 and the water guide plate 300 of the existing dash assembly structure is complicated. The beam assembly 200 includes an upper beam 210 and a lower beam 220 . One side edge of the beam 210 and the lower beam 220 are welded together, the upper end of the dash panel 100 extends to the upper beam 210 and is welded with the other side edges of the upper beam 210 and the lower beam 220, and the water guide plate 300 is welded with the dash panel 100 Therefore, four welding edges are required, the welding cost is high, and the welding seam between the front wall 100 and the upper beam 210 is suspended, which wastes the space of the passenger compartment and requires a special design for gluing. The water guide plate 300 and the front wall 100 The welding part of the water guide plate 300 needs to be glued from the lower edge, and its sealing effect is poor.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is the defects of high welding cost, difficult gluing and poor sealing effect caused by the complicated connection of the front wall, the beam and the water guide plate of the existing front wall assembly.

In order to solve the above technical problems, the present invention provides an automobile front wall structure, which includes a front wall plate, a cross beam assembly and a water guide plate, the front wall plate is an integral structure, and the upper end of the front wall plate is overlapped to the The lower edge of the beam assembly is welded with the lower edge of the beam assembly, and the water guide plate is located below the beam assembly and welded with the outer side surface of the front wall.

As a preferred solution, the automobile front wall structure further includes a front wall frame, the front wall frame includes a front wall outer frame and a front wall inner frame, the front wall outer frame is arranged on the outer side of the front wall panel, and the The inner frame of the front wall is arranged on the inner side of the front wall.

As a preferred solution, the front outer frame includes a left front outer frame and a right front outer frame, the left front outer frame is located on the left side of the right front outer frame, and the left front outer frame and the right front outer frame are located between the left front outer frame and the right front outer frame. There are mounting points for the front subframe.

As a preferred solution, the automobile front wall structure further includes a front wall reinforcement plate, and the front wall reinforcement plate is arranged on the inner side of the front wall plate.

As a preferred solution, the front wall reinforcement plate includes a left front wall reinforcement plate and a right front wall reinforcement plate, the left front wall reinforcement plate is located on the left side of the right front wall reinforcement plate, and three pedals are installed on the left front wall reinforcement plate, so The thickness of the plate surface of the left cowl reinforcement plate is greater than the thickness of the plate surface of the right cowl reinforcement plate.

As a preferred solution, a cavity is formed between the dash reinforcement plate and the dash panel, and the position where the three pedals are installed on the left dash reinforcement plate is fitted with the dash panel, and the cavity is filled with There are polymer materials.

As a preferred solution, the front wall is provided with an air-conditioning air inlet, the air-conditioning air inlet is located above the water guide plate, and the part where the air-conditioning air inlet is arranged on the front wall is inclined toward the front of the vehicle body.

As a preferred solution, the automobile front wall structure further includes an A-pillar inner panel, the A-pillar inner panel includes an A-pillar upper inner panel and an A-pillar lower inner panel, and the cross beam assembly is connected to the A-pillar upper inner panel , the upper part of the dash panel is connected with the upper inner panel of the A-pillar, and the lower part of the dash panel is connected with the lower inner panel of the A-pillar.

As a preferred solution, an instrument panel mounting bracket is provided on the inner panel of the A-pillar, the upper part of the instrument panel mounting bracket is connected to the upper inner panel of the A-pillar, and the lower part of the instrument panel mounting bracket is connected to the lower part of the A-pillar. Internal board connections.

As a preferred solution, the instrument panel mounting bracket is provided with two instrument panel installation points located in the longitudinal direction of the vehicle body, and the distance between the two instrument panel installation points in the longitudinal direction of the vehicle body is greater than 10 mm; The distance between the surface and the characteristic surface in the longitudinal direction of the vehicle body is greater than 5 mm; the distance between the center of the installation point of the instrument panel and the lateral installation surface of the instrument panel in the vehicle body is less than 30 mm.

The front wall structure of an automobile provided by the invention has simple and convenient welding methods for the front wall plate, the cross beam assembly and the water guide plate. By welding the front wall reinforcement plate and the beam, a row of welding points is saved, and the welding cost is reduced. The welding edge between the front wall and the beam assembly is easy to apply glue. Welded on the outer side of the front wall, the water in the water deflector will not leak to the inner side of the front wall, and the welding edge of the water guide and the front wall does not need to be glued, thus saving a glue application process. , and greatly reduce the risk of water ingress.

Description of drawings

Fig. 1 is the structural representation of the automobile front wall structure of the background technology;

Fig. 2 is the A-A cross-sectional structural schematic diagram in Fig. 1;

3 is a structural schematic diagram of an automobile front wall structure according to an embodiment of the present invention;

Fig. 4 is a schematic view of the cross-sectional structure in the direction B-B in Fig. 3;

5 is a schematic structural diagram of a front wall outer frame according to an embodiment of the present invention;

FIG. 6 is a diagram showing the cooperation relationship between the instrument panel mounting bracket and the inner panel of the A-pillar according to the embodiment of the present invention.

Among them, 100, front wall; 200, beam assembly; 210, upper beam; 220, lower beam; 300, water guide plate; 400, front wall outer frame;

1. Front wall; 2. Beam assembly; 21. Upper beam; 22. Lower beam; 3. Water guide plate; 411, Left front wall outer frame; 412, Right front wall outer frame; 421, Left front wall inner frame; 422 , Right front wall inner frame; 51, Left front wall reinforcement plate; 52, Right front wall reinforcement plate; 6, Air conditioning air inlet; 7, A-pillar inner plate; 71, A-pillar upper inner plate; 72, A-pillar lower inner plate; 8 , Instrument panel mounting bracket; 81. Instrument panel installation point.

Detailed ways

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

As shown in FIG. 3 and FIG. 4 , an automobile front wall structure according to a preferred embodiment of the present invention includes a front wall panel 1 , a cross beam assembly 2 and a water guide plate 3 , and the cross beam assembly 2 consists of an upper beam 21 and a lower beam 22 butt joints, the front wall 1 is an integral structure, the upper end of the front wall 1 is overlapped to the lower edge of the beam assembly 2 and welded with the lower edge of the beam assembly 2, the lower edge of the beam assembly 2 is the lower On the lower edge of the beam 22, the water guide plate 3 is located below the beam assembly 2 and is welded with the outer side of the front wall 1. The welding method of the front wall 1, the beam assembly 2 and the water guide plate 3 of the present invention is simple and convenient, The upper end of the dash panel 1 is lapped and welded with the beam assembly 2. Compared with the existing dash panel 1 in which the dash reinforcement plate and the beam are welded, a row of welding points is saved, and the welding cost is reduced. The welding edge between 1 and the beam assembly 2 is easy to apply glue, and the front wall 1 is an integral structure, and the water guide plate 3 is welded on the outer side of the front wall plate 1, and the water in the water guide plate 3 will not move forward. The inner side of the coaming plate 1 leaks, and the welding edges of the water guide plate 3 and the front coaming plate 1 do not need to be further coated with glue, thereby saving a glue coating process and greatly reducing the risk of water ingress.

The front wall structure of the present invention also includes a front wall frame, the front wall frame includes a front wall outer frame and a front wall inner frame, the front wall outer frame is arranged on the outer side of the front wall panel 1, and the front wall inner frame is arranged on the front wall panel. 1, the front wall frame is divided into a front wall outer frame and a front wall inner frame structure, which strengthens the strength of the front wall assembly. Preferably, the dash outer frame is welded to the outer side of the dash panel 1 , and the dash inner frame is welded to the inner side of the dash panel 1 .

The front outer frame can be a one-piece structure or a segmented structure. Preferably, as shown in FIG. 5 , the front outer frame of this embodiment is a segmented structure, which includes a left front outer frame 411 and a right front outer frame. Surrounding outer frame 412, left front outer frame 411 is located on the left side of right front outer frame 412, left front outer frame 411 is connected with left longitudinal beam, right front outer frame 412 is connected with right longitudinal beam, and the front outer frame is divided into two sections It can flexibly assign the welding sequence of the front wall structure to adapt to the equipment constraints of the OEM. The two front wall outer frames are welded with the left and right longitudinal beams respectively, which have strong operability; the left front wall outer frame 411 and the right front wall outer frame 411 Front subframe mounting points are provided between the frames 412 . The front inner frame includes a left front inner frame 421 and a right front inner frame 422. The left front inner frame 421 is arranged on the left side of the right front inner frame 422. The lateral support frame is formed, the longitudinal support frame extends to the lower end of the dash panel 1 , and the lateral support frame extends to the A-pillar inner panel 7 of the dash panel 1 .

As shown in FIG. 3 , the front wall structure of the present invention further includes a front wall reinforcement plate, which is arranged on the inner side of the front wall panel 1 , preferably welded with the inner side surface of the front wall panel 1 . The front wall reinforcement plate can be an integral structure or a split structure. Preferably, the front wall reinforcement plate in this embodiment is a split structure, which includes a left front wall reinforcement plate 51 and a right front wall reinforcement plate 52. The left front wall reinforcement plate 51 is located on the left side of the right cowl reinforcement plate 52, and three pedals are installed on the left cowl reinforcement plate 51. Since the installation of the three pedals requires certain strength and rigidity, the thickness of the plate surface of the left cowl reinforcement plate 51 in this embodiment is larger than that of the right front cowl reinforcement plate 51. The thickness of the wall reinforcement plate 52; the thickness of the left front wall reinforcement plate 51 can be 1 to 2 mm, which can be 1.2, 1.3, 1.5, 1.7 or 1.8 mm; the thickness of the right front wall reinforcement plate 52 can be 0.6 to 0.6 mm 1.0mm, can be 0.7, 0.8 or 0.9mm; the front wall reinforcement plate is divided into two sections, and different thicknesses can be set according to the different installation strength and stiffness, thus achieving the purpose of reducing weight and saving materials.

In order to improve the NVH performance of the vehicle, a cavity is formed between the dash reinforcement plate and the dash panel 1 , and the position where the three pedals are installed on the left dash reinforcement plate 51 is fitted to the dash panel, and the cavity is filled with polymer Material, this material can be used for the residual material of other parts of the body, such as the door opening waste of the side wall cutting hole, so that the residual material can be used reasonably.

The front wall 1 is provided with an air inlet 6 for an air conditioner. The air inlet 6 is an air inlet for HVAC (Heating, Ventilation and Air Conditioning), and the air inlet 6 is located on the water guide plate 3. Above the front panel 1 where the air-conditioning air inlet 6 is arranged is inclined toward the front of the vehicle body. Under the condition that the center of the hole of the air-conditioning air inlet 6 remains unchanged, the height of the lower edge of the hole relative to the Z direction of the water deflector 3 is increased to reduce the height of the body. The risk of water entering the small air conditioner.

The vehicle front wall structure of the present invention further comprises an A-pillar inner panel 7, the A-pillar inner panel 7 includes an A-pillar upper inner panel 71 and an A-pillar lower inner panel 72, the cross beam assembly 2 is connected with the A-pillar upper inner panel 71, and the front wall The upper part of the plate 1 is connected to the upper inner plate 71 of the A-pillar, and the lower part of the dash panel 1 is connected to the lower inner plate 72 of the A-pillar. According to the requirements of different installation strength and rigidity, the upper inner panel 71 of the A-pillar and the lower inner panel 72 of the A-pillar are set to have different thicknesses.

As shown in FIG. 6 , the A-pillar inner panel 7 is provided with an instrument panel mounting bracket 8 , the upper part of the instrument panel mounting bracket 8 is connected with the A-pillar upper inner panel 71 , and the lower part of the instrument panel mounting bracket 8 is connected with the A-pillar lower inner panel 72 connections. Preferably, the instrument panel mounting bracket 8 is provided with two instrument panel mounting points 81 in the longitudinal direction of the vehicle body, and the distance L1 between the two instrument panel mounting points 81 in the longitudinal direction of the vehicle body (X direction) is greater than 10 mm, thereby increasing the The rigidity of each instrument panel installation point 81; the distance L2 between the installation surface of the instrument panel installation point 81 and the characteristic surface in the vehicle longitudinal direction (X direction) is greater than 5mm, so that the local rigidity of the instrument panel installation point 81 can be improved. The installation surface of the point 81 refers to the plane of the instrument panel installation point 81 in the lateral direction (Y direction) of the vehicle body, which is the end face of the nut in this embodiment, and the characteristic surface refers to the curved surface connecting the two installation surfaces; the instrument panel During installation, the rear edge of the A-pillar inner panel 7 serves as the mounting surface of the instrument panel in the lateral direction (Y direction), and the center of the instrument panel mounting point 81 and the rear edge of the A-pillar inner panel 7 are in the lateral direction (Y direction) of the vehicle body The distance L3 is less than 30mm, which is equivalent to the cantilever and should be as small as possible. The longer the distance, the greater the deflection and the smaller the deformation, the better.

The automobile front wall structure provided by the present invention has the following advantages:

1. The structure is optimized. The upper end of the front wall panel 1 and the beam assembly 2 are lapped and welded. Compared with the existing front wall panel by welding the front wall reinforcement plate and the beam, it saves a row of welding points and reduces the number of welding points. Cost, the welding edge between the front wall 1 and the cross member assembly 2 is easy to apply glue;

2. The front wall 1 has an integrated structure, the water guide plate 3 is welded on the outer side of the front wall 1, the water in the water guide plate 3 will not leak to the inner side of the front wall 1, and the water guide plate 3 and the front wall will not leak. The welding edge of the plate 1 does not need to be further coated with glue, thereby saving a glue coating process and greatly reducing the risk of water ingress;

3. The front wall panel 1, where the air-conditioning air inlet 6 for heating, ventilation and air conditioning is located, is inclined to the front of the vehicle body to reduce the risk of water entering the air-conditioning;

4. The front wall outer frame is integrated with the front subframe mounting point, which reduces the number and weight of parts and makes the structure simple;

5. Set the left front wall reinforcement plate 51 and the right front wall reinforcement plate 52. The left front wall reinforcement plate 51 is used to install the three pedals. The left front wall reinforcement plate 51 and the right front wall reinforcement plate 52 can be set to different structures and thicknesses according to actual needs. It can reduce weight and improve material utilization;

6. By rationally arranging the structure of the instrument panel mounting bracket 8 to optimize its structure, it can meet the installation rigidity in the X and Y directions.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made. These improvements and replacements It should also be regarded as the protection scope of the present invention.

Claims (10)

1. An automobile front wall structure, characterized in that, comprising a front wall plate, a cross beam assembly, a water guide plate, a front wall frame and an A-pillar inner plate, the front wall plate is an integrated structure, and the front wall plate The upper end of the water deflector is lapped to the lower edge of the beam assembly and welded with the lower edge of the beam assembly, and the water deflector is located below the beam assembly and welded with the outer side of the front wall; The beam assembly is formed by butting the upper beam and the lower beam, and a cavity structure is formed between the upper beam and the lower beam, and the upper end of the front wall is overlapped to the lower edge of the lower beam and Welding with the lower edge of the lower beam; The cowl frame includes a cowl outer frame and a cowl inner frame, the cowl inner frame includes a longitudinal support frame and a lateral support frame, the longitudinal support frame extends to the lower end of the cowl panel, and the lateral support frame A frame extends along the dash panel to the A-pillar inner panel. 2 . The front wall structure of an automobile according to claim 1 , wherein the front wall outer frame is provided on the outer side of the front wall panel, and the front wall inner frame is provided on the inner side surface of the front wall panel. 3 . . 3 . The automobile front wall structure according to claim 2 , wherein the front wall outer frame comprises a left front wall outer frame and a right front wall outer frame, and the left front wall outer frame is located at the left side of the right front wall outer frame. 4 . A front subframe mounting point is arranged between the left front wall outer frame and the right front wall outer frame. 4. The front wall structure of an automobile according to any one of claims 1 to 3, wherein the front wall structure of the automobile further comprises a front wall reinforcement plate, and the front wall reinforcement plate is provided on the front wall of the front wall plate. inner side. 5 . The front wall structure of an automobile according to claim 4 , wherein the front wall reinforcement plate comprises a left front wall reinforcement plate and a right front wall reinforcement plate, and the left front wall reinforcement plate is located on the left side of the right front wall reinforcement plate. 6 . On the left side, three pedals are installed on the left dash reinforcement, and the thickness of the left dash reinforcement is greater than that of the right dash reinforcement. 6 . The front wall structure of an automobile according to claim 5 , wherein a cavity is formed between the front wall reinforcement plate and the front wall plate, and the position where the three pedals are installed on the left front wall reinforcement plate is the same as that of the left front wall reinforcement plate. 7 . The dash panel is attached, and the cavity is filled with a polymer material. 7. The front wall structure of an automobile according to any one of claims 1 to 3, wherein an air-conditioning air inlet is provided on the front wall, and the air-conditioning air inlet is located above the water guide plate, so The part of the dash panel where the air-conditioning air inlet is arranged is inclined toward the front of the vehicle body. 8. The automobile front wall structure according to any one of claims 1-3, wherein the A-pillar inner panel comprises an A-pillar upper inner panel and an A-pillar lower inner panel, and the cross beam assembly is connected to the A-pillar inner panel. The A-pillar upper inner panel is connected, the upper part of the dash panel is connected with the A-pillar upper inner panel, and the lower part of the dash panel is connected with the A-pillar lower inner panel. 9 . The front wall structure of an automobile according to claim 8 , wherein an instrument panel mounting bracket is provided on the inner panel of the A-pillar, and the upper part of the instrument panel mounting bracket is connected with the upper inner panel of the A-pillar, The lower part of the instrument panel mounting bracket is connected with the lower inner panel of the A-pillar. 10 . The front wall structure of claim 9 , wherein the instrument panel mounting bracket is provided with two instrument panel mounting points in the longitudinal direction of the vehicle body, and the two instrument panel mounting points are located in the longitudinal direction of the vehicle body. 11 . The distance between the instrument panel installation point and the feature surface in the longitudinal direction of the vehicle body is greater than 5mm; the distance between the center of the instrument panel installation point and the instrument panel installation surface in the lateral direction of the vehicle body is less than 30mm.

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