CN218786030U

CN218786030U - Connection structure and vehicle of instrument board stiffening beam and preceding wall

Info

Publication number: CN218786030U
Application number: CN202223047463.2U
Authority: CN
Inventors: 江国安; 岳志强
Original assignee: Great Wall Motor Co Ltd
Current assignee: Liang Liang Automobile Co ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-04-04
Anticipated expiration: 2032-11-15

Abstract

The utility model provides an instrument board stiffening beam and preceding connection structure and vehicle of enclosing. The utility model discloses a connection structure that instrument board stiffening beam and preceding enclose encloses and the linking bridge between the instrument board stiffening beam including locating preceding of vehicle. The connecting bracket comprises a plurality of frames which are sequentially connected from the instrument panel reinforcing beam to the direction of the front wall, and each frame has a width dimension in the left-right direction of the vehicle and a length dimension in the front-rear direction of the vehicle; the width dimension and the length dimension of each frame are gradually reduced along the direction from the instrument panel reinforcing beam to the front wall. In the connecting structure of the instrument panel stiffening beam and the front wall, the structural modal frequencies of the frames are different due to the area difference between the frames, resonance cannot be formed between the frames, and the sensitivity of the whole connecting bracket to vibration response can be reduced; thereby, the vibration influence of the vibration excitation of each moving part on the vehicle on the steering system arranged on the steering column mounting frame on the instrument board reinforcing beam can be relieved.

Description

Connection structure and vehicle of instrument board stiffening beam and preceding wall

Technical Field

The utility model relates to an automobile structure technical field, in particular to instrument board stiffening beam and preceding connection structure who encloses. Additionally, the utility model discloses still relate to a vehicle.

Background

The instrument panel reinforcing beam is an important structure for connecting a steering system and a vehicle body, the strength of the instrument panel reinforcing beam structure directly influences the vibration level of a vehicle steering wheel, and the steering wheel vibration is most easily perceived by a user, so that the attenuation effect of the instrument panel reinforcing beam on the vibration transmitted to the steering system by the vehicle body is particularly important.

The existing instrument panel stiffening beam is generally in reinforced connection with columns A on two sides of a vehicle body and the front part of a passage in a floor, the instrument panel stiffening beam is of a tubular beam structure, the weight is large, the connection area with the columns A on two sides of the vehicle body is small, the connection strength is poor, the positions of the instrument panel stiffening beam and a steering column are not reinforced in a targeted manner, the rigidity near the connection part of the instrument panel stiffening beam and a steering system is weak, and the vibration attenuation is insufficient. When Vibration excitation of moving parts such as a power assembly, a cooling system, a running system and the like is transmitted to a vehicle body and is transmitted to an instrument panel reinforcing beam by the vehicle body, the rigidity of the instrument panel reinforcing beam and the rigidity of the part near a steering column are weak, so that the steering wheel vibrates greatly, the connection reinforcing structure of the instrument panel reinforcing beam and a front wall is weak, the part cannot be well reinforced, the response degree of the part to Vibration cannot be reduced, and the high comfort requirement of the vehicle to NVH (Noise, vibration and Harshness) cannot be met.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a connection structure of an instrument panel stiffening beam and a front wall to influence the vibration of a steering system by the vibration excitation of each moving part on a vehicle.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a connecting structure of an instrument panel reinforcing beam and a front wall comprises a connecting bracket arranged between the front wall of a vehicle and the instrument panel reinforcing beam; the attachment bracket includes a plurality of frames that are sequentially connected by the instrument panel reinforcement beam toward the cowl, and each of the frames has a width dimension in the vehicle left-right direction and a length dimension in the vehicle front-rear direction; the width dimension of each of the frames and/or the length dimension of each of the frames are successively set to be smaller in a direction toward the cowl along the dash reinforcement beam.

Further, the plurality of frames includes a first frame connected to the dash reinforcement beam, and a second frame connected to the cowl; the width dimension ratio of the second frame to the first frame and/or the length dimension ratio of the second frame to the first frame is between 0.6 and 0.8.

Further, the connecting bracket is connected to a portion of the instrument panel reinforcing beam where the steering column mounting bracket is provided, and includes a front cross member and a middle cross member arranged in the left-right direction of the vehicle, and a first longitudinal member, a second longitudinal member, and a third longitudinal member arranged in the front-rear direction of the vehicle; the second longitudinal beam comprises a rear section and a front section which are integrally connected; the rear section and the first longitudinal beam are connected between the middle cross beam and the instrument panel reinforcing beam to form the first frame, and the front section and the third longitudinal beam are connected between the middle cross beam and the front cross beam to form the second frame.

Furthermore, the two ends of the third longitudinal beam are respectively connected to the middle part of the middle cross beam and the end part of the front cross beam, and the width of the third longitudinal beam in the left-right direction of the vehicle is gradually reduced from the middle cross beam to the front cross beam.

Furthermore, the cross section of middle part crossbeam is the right angle form, has the first face that the level set up and by the second face that the front side of first face set up to the below extension, just the rear side middle part of first face is equipped with arched breach.

Furthermore, the vehicle support device also comprises a support frame arranged below the connecting support, and the connecting support and the projection of the support frame in the left and right directions of the vehicle are triangular.

Further, the support bracket includes a first connecting plate that is provided to be inclined downward in a direction toward the cowl by the dash reinforcement beam, and a second connecting plate that is connected between a front end of the connecting bracket and a front end of the first connecting plate; and a supporting plate extending upwards is arranged on the second connecting plate, and the top end of the supporting plate is connected to the middle part of the connecting bracket.

Further, the middle part of the connecting bracket is provided with a middle cross beam arranged along the left-right direction of the vehicle, and the supporting plate and the middle cross beam are integrally constructed and molded; the width dimension of the support plate in the left and right direction of the vehicle is gradually increased from bottom to top, and flanges in arc transition are formed on the side edges of the support plate and the bottom edge of the middle cross beam.

Furthermore, an arch structure which is arched upwards is arranged on the flanging at one side of the supporting plate.

Compared with the prior art, the utility model discloses following advantage has:

the utility model discloses a connection structure of instrument board stiffening beam and front wall, through set up a plurality of frames that connect gradually between instrument board stiffening beam and the front wall of vehicle, the vibration excitation that comes from the front wall transmission can be subdued by each frame step by step; moreover, because the size of each frame is gradually increased from the front wall to the instrument panel reinforcing beam, the structural modal frequencies of the frames are different due to the area difference between the frames, resonance cannot be formed between the frames, and the sensitivity of the whole connecting bracket to vibration response can be reduced; thereby, the vibration of a steering system mounted on a steering column mounting bracket of a reinforcing beam of an instrument panel by vibration excitation of various moving parts on a vehicle can be relieved.

In addition, the support frame is arranged below the connecting support and is designed into a triangular support structure, so that the overall strength of the connecting structure can be improved. The connecting plate is bent, a large triangular supporting structure is formed by the connecting plate and the connecting support, and the supporting plate is arranged between the connecting plate and the middle part of the connecting support, so that a small triangular supporting structure is separated from the large triangular supporting structure, and powerful support and reinforcement can be formed on the middle part of the connecting support.

Another object of the utility model is to provide a vehicle, the instrument board stiffening beam of vehicle with before enclose between be equipped with the utility model discloses an instrument board stiffening beam with before enclose connection structure. The utility model discloses a vehicle has the technical advantage that the connection structure that foretell instrument board stiffening beam and preceding enclose possessed.

Drawings

The accompanying drawings, which form a part of the present disclosure, are provided to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions thereof are provided to explain the present disclosure, wherein the related terms in the front, back, up, down, and the like are only used to represent relative positional relationships, and do not constitute an undue limitation of the present disclosure. In the drawings:

fig. 1 is a schematic view of a connection structure between an instrument panel reinforcing beam and a front wall and an overall structure of the instrument panel reinforcing beam according to an embodiment of the present invention;

FIG. 2 is a top view of the components shown in FIG. 1;

FIG. 3 is a bottom view of the components shown in FIG. 1;

FIG. 4 is a side view of the components shown in view b of FIG. 1;

fig. 5 is a schematic view of a partial structure of a connection structure and an instrument panel reinforcing beam according to a first embodiment of the present invention;

description of reference numerals:

1. an instrument panel reinforcement beam; 10. a left column mounting rack; 11. a column A right mounting rack; 12. a steering column mounting bracket; 13. an instrument panel mounting bracket;

2. connecting a bracket; 20. a first stringer; 21. a second stringer; 22. a middle cross beam; 23. a third longitudinal beam; 24. a front cross member; 200. a reinforcing protrusion; 211. a rear section; 212. a front section; 220. a first board surface; 221. a second board surface; 2201. a notch;

3. a support frame; 30. a connecting plate; 31. a support plate; 300. a first connecting plate; 301. a second connecting plate; 3001. branching; 3011. bending the section; 310. lightening holes; 311. flanging; 312. an arch structure.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the appearances of the terms first, second, etc. in the figures are also for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless expressly limited otherwise. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

The embodiment relates to a connecting structure of an instrument panel reinforcing beam and a front wall, which can relieve the vibration influence of vibration excitation of each moving part on a vehicle on a steering system while reinforcing the structural strength of the part of the instrument panel reinforcing beam 1 where a steering column mounting frame 12 is located; one exemplary configuration of which is shown in fig. 1 and 2.

In general, the connecting structure includes a connecting bracket 2 provided between a dash panel and a dash reinforcement beam 1 of a vehicle, and the connecting bracket 2 includes a plurality of frames connected in series from the dash reinforcement beam 1 toward the dash panel, each frame having a width dimension in a vehicle left-right direction and a length dimension in a vehicle front-rear direction; the width dimension of each frame and/or the length dimension of each frame are successively smaller in a direction toward the dash panel from the instrument panel reinforcement beam 1.

In order to reinforce the structural strength of the instrument panel reinforcement beam 1 at the location of the column mounting bracket 12, the attachment bracket 2 is preferably attached to the instrument panel reinforcement beam 1 at the location where the column mounting bracket 12 is provided. Further, it is preferable that the width dimension of each frame and the length dimension of each frame are gradually reduced in order

In the embodiment, the left and right ends of the instrument panel reinforcing beam 1 are respectively provided with an A-pillar left mounting rack 10 and an A-pillar right mounting rack 11 for being respectively connected with A pillars on two sides of a vehicle; on the side of the center portion of the instrument panel reinforcement beam 1 facing the rear of the vehicle, an instrument panel mounting bracket 13 is provided to mount an instrument panel. A steering column mounting frame 12 is arranged on one side, facing the rear of the vehicle, of the instrument panel reinforcing beam 1 corresponding to the positions of a steering wheel and a steering system and is used for mounting the steering system, the steering wheel and the like; meanwhile, the above-described connecting bracket 2 is provided on the side of the instrument panel reinforcement beam 1 facing the vehicle front, corresponding to this position.

As shown in fig. 3 and 4, the connecting bracket 2 of the present embodiment is disposed in a substantially horizontal posture, that is, each frame is disposed on the same horizontal plane. Preferably, the plurality of frames include a first frame connected to the instrument panel reinforcement beam 1, and a second frame connected to the cowl; the second frame and the first frame are both approximately rectangular closed box structures, and the size ratio of the second frame to the first frame is between 0.6 and 0.8. In this embodiment, the width of the second frame is 0.6 to 0.8 times the width of the first frame, and the length of the second frame is also 0.6 to 0.8 times the length of the first frame.

The two frames of the first frame and the second frame are arranged, the proportion of the two frames in the width dimension and the length dimension is controlled to be 0.6-0.8, the structural proportion of the two frames can be more coordinated, the integral connection strength of the connecting support 2 is guaranteed, the area difference of the first frame and the second frame can be obvious due to sufficient size difference, and the reduction of the sensitivity of the whole connecting support 2 to vibration response is facilitated. As for the specific dimensions of the first frame and the second frame, for example, it may be designed such that: the width dimension of the first frame is 285mm, the length dimension is 185mm, the width dimension of the second frame is 193mm, and the length dimension is 142mm; thus, the area of the box structure of the two framesThe phase difference will be at 20000mm of the strengthening bump ² Therefore, the difference of the structural modal frequencies of the two is obvious, and the effect of avoiding resonance is achieved.

Each frame can be provided with a closed box body structure formed by connecting a plurality of beam bodies which are arranged vertically and horizontally end to end, and the specific form has various choices. In the present embodiment, the linking bracket 2 includes a front cross member 24 and a middle cross member 22 arranged in the left-right direction of the vehicle, and a first side member 20, a second side member 21, and a third side member 23 arranged in the front-rear direction of the vehicle; the second longitudinal beam 21 includes a rear section 211 and a front section 212 integrally connected; the rear section 211 and the first longitudinal member 20 are connected between the center cross member 22 and the instrument panel reinforcement beam 1 to form a first frame, and the front section 212 and the third longitudinal member 23 are connected between the center cross member 22 and the front cross member 24 to form a second frame. The required first frame and second frame can be constructed by adopting the frame type structure of the front cross beam 24, the middle cross beam 22, the first longitudinal beam 20, the second longitudinal beam 21 and the third longitudinal beam 23; has the characteristics of simple structure and convenient construction and processing. In actual assembly, a connecting structure such as a mounting hole for connecting a front wall may be provided on the front cross member 24, and the first side member 20 and the second side member 21 may be directly welded to the instrument panel reinforcement beam 1.

As shown in fig. 2, both ends of the third side member 23 are connected to the middle of the middle cross member 22 and the end of the front cross member 24, respectively, and the width dimension of the third side member 23 in the vehicle left-right direction is set to be gradually smaller from the middle cross member 22 toward the front cross member 24. The rear end of the third longitudinal beam 23 is arranged in the middle of the middle cross beam 22, so that the positioning is facilitated; by widening the third longitudinal beam 23, the width dimension of the second frame can be increased to a level of 0.6 or more of the width dimension of the first frame. Moreover, the width of the third longitudinal beam 23 is gradually changed, so that the vibration transmission from the front wall can be effectively relieved, and the sensitivity of the connecting bracket 2 to vibration excitation is further reduced.

As shown in fig. 5, in the present embodiment, the middle cross member 22 is of a right-angle structure, that is, the cross section of the middle cross member 22 is right-angled, and has a first plate surface 220 horizontally arranged and a second plate surface 221 extending downward from the front side of the first plate surface 220. Further, an arch notch 2201 is formed in the middle of the rear side of the first plate 220. By providing the arcuate notch 2201 in the horizontal first panel 220, the weight of the center cross member 22 is reduced while ensuring structural strength at that location. The right-angle structure of the middle cross beam 22 also has the characteristics of convenient processing and stable structural performance.

In addition to the connecting bracket 2, the supporting bracket 3 located below the connecting bracket 2 is further provided in the connecting structure of the instrument panel reinforcing beam and the cowl in the present embodiment, and as shown in fig. 4, the projections of the connecting bracket 2 and the supporting bracket 3 in the left-right direction of the vehicle are triangular. The support frame 3 is arranged below the connecting support 2 and is designed into a triangular supporting structure, so that the overall strength of the connecting structure can be improved.

Specifically, the support bracket 3 includes a first link plate 300 provided to be inclined downward in the direction of the front wall from the instrument panel reinforcement beam 1, and a second link plate 301 connected between the front end of the link bracket 2 and the front end of the first link plate 300; the second connecting plate 301 is provided with a supporting plate 31 extending upward, and the top end of the supporting plate 31 is connected to the middle of the connecting bracket 2. The first connecting plate 300 and the second connecting plate 301 are adopted to form the bent connecting plate 30, a large triangular supporting structure is formed by the connecting plate 30 and the connecting bracket 2, the supporting plate 31 is arranged between the connecting plate 30 and the middle part of the connecting bracket 2, so that a small triangular supporting structure is separated in the large triangular supporting structure, the supporting plate 31 is roughly positioned at two thirds of the position of the second connecting plate 301, the large triangle formed by the connecting plate 30 and the connecting bracket 2 is separated into two small triangles with the area ratio of 2; and the difference in the intensity of the two small triangles can avoid the formation of resonance.

Referring to fig. 3, two branches 3001 may be designed at a connection portion of the first connecting plate 300 and the instrument panel reinforcing beam 1, so that the first connecting plate 300 is integrally in a "Y" shape and is fixedly connected to the instrument panel reinforcing beam 1 by welding through the two branches 3001; thus, the connection strength of the entire support frame 3 to the instrument panel reinforcement beam 1 can be improved.

As shown in fig. 4, the second connecting plate 301 includes a main body section extending downward from the middle of the front cross member 24 of the connecting bracket 2 to the rear, and a bent section 3011 bent downward relative to the main body section, the end of the bent section 3011 is connected to the end of the first connecting plate 300, and the bent section 3011 and the first connecting plate 300 are perpendicular to each other; the support plate 31 is then connected between the main body section and the central cross member 22 of the connecting bracket 2. The bending of the bending section 3011 can improve the structural strength of the second connecting plate 301, and the first connecting plate 300 and the bending section 3011 are convenient to butt and fixedly connect in a mutually perpendicular posture.

As also shown in fig. 5, in the present embodiment, a support plate 31 is attached to the middle of the middle cross member 22 based on the middle cross member 22 disposed at the middle of the connecting bracket 2, forming a support for the connecting bracket 2. Moreover, it is preferable that the support plate 31 is integrally configured and molded with the middle cross member 22, and the width dimension of the support plate 31 in the vehicle left-right direction is set gradually larger from bottom to top. As shown in fig. 5, the support plate 31 and the second plate surface 221 of the middle cross member 22 are integrally connected and are integrally constructed and located on the same plate surface; meanwhile, the side edge of the supporting plate 31 is connected with the bottom edge of the second plate 221 and is designed to be in an arc transition form, and a flange 311 is arranged on the side edge of the supporting plate 31, the bottom edge of the second plate 221 and the whole edge part of the connection transition. Obviously, there is a flange 311 on each side of the support plate 31, however, an arch structure 312 that is arched upward is provided on the flange 311 on only one side of the support plate 31; in fig. 5, the arch 312 is provided on the flange 311 on the left side of the support plate 31.

The support plate 31 and the middle cross beam 22 of the connecting bracket 2 are constructed into a whole, the support plate 31 and the middle cross beam 22 are in a T-shaped structure, the support plate 31 is designed into a form that the width is gradually increased from bottom to top, and good arc transition can be formed between the bottom edges of the support plate 31 and the middle cross beam 22 along the trend so as to increase the connecting area of the support plate 31 and the middle cross beam 22; the flanges 311 are arranged on the side edges of the support plate 31, the bottom edge of the middle cross beam 22 and the edges of the arc transition of the two, so that the overall strength of the middle cross beam 22 and the support plate 31 can be improved. And set up domes 312 on the turn-ups 311 of one of them side at the backup pad 31 both sides, when guaranteeing the structural strength of this side turn-ups 311, realized different counter weights and the structure in backup pad 31 both sides, and then make the difference of structural mode frequency between them obvious, form the design of keeping away from frequently, do benefit to and reduce the sensitivity of linking bridge 2 to the vibration response.

In addition, lightening holes 310 can be arranged on the plate body with larger area at the connecting part of the support plate 31 and the middle cross beam 22, so as to achieve the lightening effect. A plurality of lightening holes, mounting holes and other structures can be arranged on the first longitudinal beam 20, the second longitudinal beam 21, the third longitudinal beam 23 and other beam bodies, or as shown in fig. 4 and 5, some reinforcing protrusions 200 are arranged to improve the self-structural strength of the beam bodies.

In summary, in the structure for connecting the dash reinforcement beam to the cowl according to the present embodiment, by providing a plurality of frames connected in series between the dash reinforcement beam 1 and the cowl of the vehicle, the vibration excitation transmitted from the cowl can be gradually reduced by each frame; moreover, because the size of each frame is gradually increased from the front wall to the instrument panel reinforcing beam 1, the structural modal frequencies of the frames are different due to the area difference between the frames, resonance cannot be formed between the frames, and the sensitivity of the whole connecting bracket 2 to vibration response can be reduced; the vibration excitation of various moving parts on the vehicle can thereby be alleviated from the vibration influence on the steering system mounted on the column mounting bracket 12 of the instrument panel reinforcement beam 1.

Example two

The embodiment relates to a vehicle, and a connecting structure of the instrument panel reinforcing beam and the front wall provided by the first embodiment is arranged between the instrument panel reinforcing beam 1 and the front wall of the vehicle.

By arranging the connecting structure of the first embodiment between the instrument panel reinforcing beam 1 and the front wall, the structural lightness of the part of the instrument panel reinforcing beam 1 where the steering column mounting frame 12 is located can be improved, so that a stable foundation is provided for mounting a steering wheel; meanwhile, due to the specific frame arrangement on the connecting structure, the sensitivity of the connecting structure to vibration response can be reduced; thereby alleviating the vibration effect of vibration excitation of various moving parts on the vehicle on the steering system mounted on the instrument panel reinforcing beam 1.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a connection structure of instrument board stiffening beam and preceding wall which characterized in that:

comprises a connecting bracket (2) arranged between a front wall and an instrument panel reinforcing beam (1) of a vehicle;

the connecting bracket (2) comprises a plurality of frames which are sequentially connected by the instrument panel reinforcing beam (1) towards the direction of the front wall, and each frame has a width dimension in the left-right direction of the vehicle and a length dimension in the front-rear direction of the vehicle;

the width dimension of each frame and/or the length dimension of each frame are successively set to be smaller in a direction toward the cowl along the dash reinforcement beam (1).

2. The connecting structure of the instrument panel reinforcement beam to the cowl according to claim 1, characterized in that:

the plurality of frames include a first frame connected to the dash reinforcement beam (1) and a second frame connected to the cowl;

the width dimension ratio of the second frame to the first frame and/or the length dimension ratio of the second frame to the first frame is between 0.6 and 0.8.

3. The connecting structure of the instrument panel reinforcement beam to the cowl according to claim 2, characterized in that:

the connecting bracket (2) is connected to a part, provided with a steering column mounting frame (12), of the instrument panel reinforcing beam (1), and comprises a front cross beam (24) and a middle cross beam (22) which are arranged along the left-right direction of the vehicle, and a first longitudinal beam (20), a second longitudinal beam (21) and a third longitudinal beam (23) which are arranged along the front-rear direction of the vehicle;

the second longitudinal beam (21) comprises a rear section (211) and a front section (212) which are integrally connected;

the rear section (211) and the first longitudinal beam (20) are connected between the middle cross beam (22) and the instrument panel reinforcement beam (1) to form the first frame, and the front section (212) and the third longitudinal beam (23) are connected between the middle cross beam (22) and the front cross beam (24) to form the second frame.

4. The connecting structure of the instrumental panel reinforcement beam with the cowl according to claim 3, characterized in that:

two ends of the third longitudinal beam (23) are respectively connected to the middle of the middle cross beam (22) and the end of the front cross beam (24), and the width of the third longitudinal beam (23) in the left-right direction of the vehicle is gradually reduced from the middle cross beam (22) to the front cross beam (24).

5. The connecting structure of the instrument panel reinforcing beam and the cowl according to claim 4, characterized in that:

the cross section of the middle cross beam (22) is right-angled, the middle cross beam is provided with a first plate surface (220) which is horizontally arranged and a second plate surface (221) which is horizontally arranged from the front side of the first plate surface (220) to the lower side of the first plate surface, and an arched notch (2201) is formed in the middle of the rear side of the first plate surface (220).

6. The connecting structure of the instrument panel reinforcement beam to the cowl according to any one of claims 1 to 5, characterized in that:

still including locating support frame (3) of linking bridge (2) below, linking bridge (2) and support frame (3) are in the ascending projection of vehicle left and right sides is triangle-shaped.

7. The connecting structure of the instrument panel reinforcement beam to the cowl according to claim 6, characterized in that:

the support frame (3) comprises a first connecting plate (300) which is arranged by the instrument panel reinforcing beam (1) in a declining way towards the direction of the front wall, and a second connecting plate (301) which is connected between the front end of the connecting bracket (2) and the front end of the first connecting plate (300);

and a supporting plate (31) extending upwards is arranged on the second connecting plate (301), and the top end of the supporting plate (31) is connected to the middle part of the connecting bracket (2).

8. The connecting structure of the instrument panel reinforcement beam to the cowl according to claim 7, characterized in that:

the middle part of the connecting bracket (2) is provided with a middle cross beam (22) arranged along the left-right direction of the vehicle, and the supporting plate (31) and the middle cross beam (22) are integrally constructed and molded;

the width dimension of the support plate (31) in the left and right direction of the vehicle is gradually increased from bottom to top, and flanges (311) in arc transition are formed on the side edges of the support plate (31) and the bottom edge of the middle cross beam (22).

9. The connecting structure of the instrumental panel reinforcement beam with the cowl according to claim 8, characterized in that:

an arch structure (312) arched upwards is arranged on the flanging (311) on one side of the supporting plate (31) only.

10. A vehicle, characterized in that:

a connecting structure of the dash reinforcement beam according to any one of claims 1 to 9 to the cowl is provided between the dash reinforcement beam (1) and the cowl of the vehicle.