CN214823612U

CN214823612U - Front auxiliary frame

Info

Publication number: CN214823612U
Application number: CN202120462893.7U
Authority: CN
Inventors: 张晓磊; 句彦儒; 李华儒; 董晓飞; 刘伟; 刘二宝
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-11-23
Anticipated expiration: 2031-03-03

Abstract

The utility model provides a preceding sub vehicle frame, this preceding sub vehicle frame overall structure include a pair of curb girder of the left and right sides that extends on vehicle length direction, connect in the front beam of a pair of curb girder front end to and connect the rear frame between a pair of curb girder rear end. The rear cross beam comprises a pair of upper plates and a lower plate, and a first reinforcing plate is arranged between the pair of upper plates to form longitudinal support for the rear cross beam. Preceding sub vehicle frame, set up first reinforcing plate through extending along automobile body length direction between a pair of upper plate to the frame construction of sub vehicle frame before optimizing, thereby sub vehicle frame wholly twists reverse and flexural rigidity before promoting, and the rigidity of suspension installation position, and make engine mounting's vibration isolation ability stronger, thereby make the car drive the travelling comfort and control the nature and promote.

Description

Front auxiliary frame

Technical Field

The utility model relates to the technical field of automobiles, in particular to preceding sub vehicle frame.

Background

With the improvement of living standard and consumption ability of people, the requirement of automobile consumers on the quality of automobiles is higher and higher, so that the controllability and comfort of the automobiles are improved, and the better driving experience of drivers and passengers is more important.

When the existing front auxiliary frame is used, a large amount of design space of the front auxiliary frame is occupied due to the fact that the existing front auxiliary frame is provided with a suspension system, a steering system, an engine, a transmission and the like, so that the stability of the front auxiliary frame is poor, the overall rigidity is weak, the rigidity of a suspension installation position is insufficient, meanwhile, the capability of the front auxiliary frame for isolating the vibration excitation of the engine is reduced, the noise in the automobile is large, the controllability and the comfort of the automobile are poor, and the quality and the use experience of the automobile are reduced.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a preceding sub vehicle frame to sub vehicle frame global stiffness and stability improve the car quality before the reinforcing.

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

a front subframe, comprising:

a pair of left and right side members extending in the vehicle longitudinal direction;

a rear cross member including a pair of upper plates extending in a vehicle width direction between a pair of left and right side members and arranged at a distance from each other in a vehicle body length direction so as to form a hollow region with the pair of side members; the lower plate covers the hollow area at the bottom of the pair of upper plates;

a first reinforcing plate extending in a vehicle body longitudinal direction between the pair of upper plates; the hollow region is partitioned in the vehicle body width direction by the first reinforcing plate.

Furthermore, at least one side edge of the first reinforcing plate forms a bending part due to lateral bending.

Furthermore, a second reinforcing plate is fixedly connected to the bottom of the lower plate, is arranged close to the center line of the width direction of the vehicle body, and has a length extending between the pair of upper plates.

Furthermore, a third reinforcing plate extending towards the first reinforcing plate is arranged on the second reinforcing plate, and at least part of projections of the third reinforcing plate and the first reinforcing plate in the height direction of the vehicle body are overlapped.

Further, an included angle between the third reinforcing plate and the second reinforcing plate is an obtuse angle.

Further, the third reinforcing plate and the second reinforcing plate are integrally formed.

Furthermore, a fourth reinforcing plate is filled at one corner of the hollow area.

Further, the fourth reinforcing plate and the first reinforcing plate are located on both sides of a vehicle body width center line.

Furthermore, the inner side edge of the fourth reinforcing plate is bent to form an inward bending part.

Furthermore, a fifth reinforcing plate extending towards the fourth reinforcing plate is arranged on the second reinforcing plate, and at least part of projections of the fifth reinforcing plate and the fourth reinforcing plate in the height direction of the vehicle body are overlapped.

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

(1) preceding sub vehicle frame, set up first reinforcing plate through extending along automobile body length direction between a pair of upper plate, built the third strip power transmission channel and longitudinal support except that a pair of curb girder in other words between a pair of upper plate for the rear end rail atress is more even, sub vehicle frame's bulk rigidity and stability before effectively strengthening.

(2) The bending part is convenient for fixedly mounting the first reinforcing plate and the pair of upper plate and lower plate, and can further optimize the transmission path of the acting force on the first reinforcing plate and improve the force dispersion effect.

(3) The arrangement of the second reinforcing plate is equivalent to that another force transmission channel and a longitudinal support except the first reinforcing plate are built between the pair of upper plates, and the second reinforcing plate is matched with the first reinforcing plate, so that the stability of the front subframe is further enhanced, the overall torsional rigidity and bending rigidity of the front subframe are improved, and the rigidity of a suspension mounting position is improved.

(4) The projections of the third reinforcing plate and the first reinforcing plate in the height direction of the vehicle body are at least partially overlapped, so that the third reinforcing plate can be used for supporting the first reinforcing plate in a matched mode, and supporting the upper plate and the lower plate which have overlapped parts with the projections of the third reinforcing plate, and acting force can be transmitted and dispersed through the overlapped parts of the projections.

(5) The obtuse angle is set to be beneficial to transmission and dispersion of acting force between the second reinforcing plate and the third reinforcing plate.

(6) The third reinforcing plate and the second reinforcing plate are integrally formed, so that a stable supporting effect can be achieved, and the transmission and dispersion of acting force between the second reinforcing plate and the third reinforcing plate are further facilitated.

(7) The fourth reinforcing plate is arranged at one corner of the hollow area, a triangular support can be formed between one side beam and one upper plate, and the fourth reinforcing plate can be matched with the first reinforcing plate to better improve the overall torsional rigidity and bending rigidity of the front subframe and the rigidity of the suspension mounting position.

(8) The fourth reinforcing plate and the first reinforcing plate are arranged on two sides of the central line of the width of the vehicle body respectively, and the whole stress uniformity of the front auxiliary frame is improved.

(9) The inward bending part is convenient for fixedly mounting the fourth reinforcing plate and the upper plate, the measuring beam and the lower plate, can further optimize the transmission path of the acting force on the fourth reinforcing plate, and improves the force dispersion effect.

(10) The projections of the fifth reinforcing plate and the fourth reinforcing plate in the height direction of the vehicle body are at least partially overlapped, so that the fifth reinforcing plate can form a matched support for the fourth reinforcing plate and form a support for the upper plate and the lower plate which have overlapped parts with the projections of the fifth reinforcing plate, and the acting force can be transmitted and dispersed through the overlapped parts of the projections.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic view of an overall structure of a front subframe according to an embodiment of the present invention;

fig. 2 is a top view of the front subframe according to the embodiment of the present invention;

fig. 3 is a bottom view of the front subframe according to the embodiment of the present invention;

description of reference numerals:

1. a side beam; 2. a rear cross member; 201. a front upper plate; 202. a rear upper plate; 203. a lower plate; 2031. a left elongated hole; 2032. a right elongated hole;

3. a first reinforcing plate; 301. a bending part; 4. a second reinforcing plate; 5. a third reinforcing plate;

6. a fourth reinforcing plate; 601. an inner bent portion; 7. the fifth strengthening board; 8. a front cross member; 9. and (5) suspending the mounting bracket.

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. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.

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

The embodiment relates to a front auxiliary frame which comprises a pair of side beams and a rear cross beam connected between the side beams in an integral structure. The rear cross beam comprises a pair of upper plates and a lower plate, and a first reinforcing plate is arranged between the pair of upper plates to form longitudinal support for the rear cross beam and enhance the overall rigidity and stability of the front auxiliary frame.

Based on the above design concept, an exemplary structure of the front subframe of the present embodiment is shown in fig. 1, and the front subframe includes a pair of left and right side members 1 extending in the vehicle length direction, a front cross member 8 connected to front ends of the pair of side members 1, and a rear cross member 2 connected between rear sections of the pair of side members 1. Wherein the rear cross member 2 includes a pair of upper plates, and a lower plate 203, and a first reinforcing plate 3 is provided between the pair of upper plates to constitute a longitudinal support for the rear cross member 2.

It should be noted that, for convenience of description, in the state shown in fig. 1, the pair of upper plates in this embodiment are a front upper plate 201 disposed near one side of the front cross member 8 and a rear upper plate 202 disposed on one side of the front upper plate 201 away from the front cross member 8, and the front upper plate 201 is provided with a suspension mounting location and a suspension mounting bracket 9 disposed on the suspension mounting location, and the addition of the first reinforcing plate 3 can improve the rigidity of the suspension mounting location in a manner of optimizing the frame structure of the front subframe; in addition, in addition to the structures of the front subframe described in the present embodiment, other structural portions of the front subframe can be referred to as related structures in the existing vehicle body.

In the concrete structure, as shown in fig. 1 and 2, a front upper panel 201 and a rear upper panel 202 extend in the vehicle width direction between a pair of left and right side members 1 and are disposed apart from each other in the vehicle body length direction so as to form a hollow region around the pair of side members 1, and a lower panel 203 covers the hollow region at the bottom of the pair of upper panels.

Note that, as shown in fig. 1 and 2, the first reinforcing panel 3 is provided between the front upper panel 201 and the rear upper panel 202 so as to extend in the vehicle body longitudinal direction, and the hollow region is partitioned in the vehicle body width direction by the provision of the first reinforcing panel 3. Moreover, at least one side of the first reinforcing plate 3 is bent to form a bent portion 301, so that the first reinforcing plate 3 can be conveniently installed between the pair of upper and lower plates 203, the transmission path of the acting force on the first reinforcing plate 3 can be further optimized, and the force dispersion effect can be improved. However, in the state shown in fig. 1 and 2, the left side of the first reinforcing plate 3 should preferably be bent to form the bent portion 301, so as to obtain the above-described effects.

In this embodiment, as shown in fig. 3, a second reinforcing plate 4 is attached to the bottom of the lower plate 203, and the second reinforcing plate 4 is disposed adjacent to the center line in the width direction of the vehicle body and has a length extending between the front upper plate 201 and the rear upper plate 202. The second reinforcing plate 4 is arranged to form another force transmission channel and a longitudinal support between the front upper plate 201 and the rear upper plate 202, except for the first reinforcing plate 3, and the force transmission channel and the longitudinal support are matched with the first reinforcing plate 3, so that the stability of the front subframe is further enhanced.

For better supporting the first reinforcing plate 3, as shown in fig. 1 and 3, a third reinforcing plate 5 extending toward the first reinforcing plate 3 is provided on the second reinforcing plate 4, and projections of the third reinforcing plate 5 and the first reinforcing plate 3 in the vehicle height direction at least partially overlap. Meanwhile, the third reinforcing plate 5 may also constitute a support for the upper and lower plates 203 having an overlapping portion with its projection to facilitate transmission and dispersion of the force through the overlapping portion of the projections.

Specifically, the included angle between the third reinforcing plate 5 and the second reinforcing plate 4 is an obtuse angle, so as to facilitate the transmission and dispersion of the acting force between the second reinforcing plate 4 and the third reinforcing plate 5. And, the third reinforcing plate 5 and the second reinforcing plate 4 are integrally formed to have a stable supporting effect. To further enhance the overall supporting effect of the front subframe, as shown in fig. 1 and 2, a fourth reinforcing plate 6 is filled at one corner of the hollow region, so as to form a triangular support between one side beam and one upper plate. Specifically, the fourth reinforcing plate 6 and the first reinforcing plate 3 are positioned on two sides of the width center line of the vehicle body, so that the integral stress uniformity of the front auxiliary frame is improved; and preferably, both ends of the fourth reinforcing panel 6 are respectively provided between one side member 1 and the front upper panel 201 thereof to form the above-described triangular support form.

In addition, as shown in fig. 2 and 3, the inner side edge of the fourth reinforcing plate 6 is bent to form an inward bent portion 601, so that the fourth reinforcing plate 6 is fixedly mounted with the upper plate, the side beam and the lower plate 203, the transmission path of the acting force on the fourth reinforcing plate 6 can be further optimized, and the force dispersion effect is improved. Besides, a fifth reinforcing plate 7 extending towards the direction of the fourth reinforcing plate 6 is arranged on the second reinforcing plate 4, and the projections of the fifth reinforcing plate 7 and the fourth reinforcing plate 6 in the height direction of the vehicle body are at least partially overlapped to form a matched support of the fifth reinforcing plate 7 to the fourth reinforcing plate 6 and a support of the upper plate and the lower plate 203 with overlapped parts with the projections, so that the acting force can be transmitted and dispersed through the overlapped parts of the projections.

It should be noted that, in addition to the above-mentioned matching relationship between each reinforcing plate and the front subframe, in the state shown in fig. 2, the transmission path of the acting force between the bent portion 301 of the first reinforcing plate 3 and the inward bent portion 601 of the fourth reinforcing plate 6 can be further optimized, so as to improve the dispersion effect of the acting force, i.e. enhance the overall rigidity and stability of the front subframe.

In addition, the lower plate 203 in this embodiment is further provided with a left long hole 2031 and a right long hole 2032 in the states shown in fig. 2 and fig. 3, wherein the projection of the right long hole 2032 in the vehicle height direction is partially covered by the first reinforcing plate 3, so that the cooperation between the two can further optimize the transmission of the acting force between the first reinforcing plate 3 and the lower plate 203, thereby improving the overall rigidity and stability of the front subframe.

The front auxiliary frame in the embodiment is characterized in that the first reinforcing plate 3 is arranged between the pair of upper plates in an extending mode along the length direction of the vehicle body, namely a third force transmission channel and a longitudinal support except the pair of side beams 1 are built between the pair of upper plates, so that the rear cross beam 2 is stressed more uniformly, and the overall rigidity and the stability of the front auxiliary frame are effectively enhanced.

This embodiment is on addding first reinforcing plate 3's basis, the cooperation sets up second reinforcing plate 4, third reinforcing plate 5, fourth reinforcing plate 6 and fifth reinforcing plate 7, can be with the mode of optimizing preceding sub vehicle frame construction, sub vehicle frame stability before the reinforcing, sub vehicle frame wholly twists reverse and bending rigidity before promoting, and the rigidity of suspension installation position, make the vibration isolation ability of engine mounting stronger, the idle speed has been reached, the purpose of operating mode in-car noise sound pressure level accelerates, make car ride travelling comfort and controllability obtain promoting, thereby improve the quality and the use experience of car.

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. A front subframe, comprising:

a pair of left and right side members (1) extending in the vehicle longitudinal direction;

a rear cross member (2), said rear cross member (2) including a pair of upper plates extending in a vehicle width direction between a pair of left and right side members (1) and disposed at a distance from each other in a vehicle body length direction so as to form a hollow region around a pair of side members (1), and a lower plate (203); the lower plate (203) covers the hollow area at the bottom of a pair of the upper plates;

a first reinforcing plate (3), wherein the first reinforcing plate (3) extends along the length direction of the vehicle body between the pair of upper plates; the hollow region is partitioned in the vehicle body width direction by the first reinforcing plate (3).

2. The front subframe of claim 1 wherein: at least one side of the first reinforcing plate (3) is bent sideways to form a bent part (301).

3. The front subframe of claim 1 wherein: and a second reinforcing plate (4) is fixedly connected to the bottom of the lower plate (203), and the second reinforcing plate (4) is arranged close to the center line of the width direction of the vehicle body and has a length extending between a pair of the upper plates.

4. The front subframe of claim 3 wherein: and a third reinforcing plate (5) extending towards the first reinforcing plate (3) is arranged on the second reinforcing plate (4), and at least part of projections of the third reinforcing plate (5) and the first reinforcing plate (3) in the height direction of the vehicle body are overlapped.

5. The front subframe of claim 4 wherein: and an included angle between the third reinforcing plate (5) and the second reinforcing plate (4) is an obtuse angle.

6. The front subframe of claim 4 wherein: the third reinforcing plate (5) and the second reinforcing plate (4) are integrally formed.

7. The front subframe of claim 3 wherein: a fourth reinforcing plate (6) is filled at one corner of the hollow area.

8. The front subframe of claim 7 wherein: the fourth reinforcing plate (6) and the first reinforcing plate (3) are positioned on two sides of the width center line of the vehicle body.

9. The front subframe of claim 7 wherein: the inner side edge of the fourth reinforcing plate (6) is bent to form an inward bending part (601).

10. The front subframe of claim 7 wherein: and a fifth reinforcing plate (7) extending towards the fourth reinforcing plate (6) is arranged on the second reinforcing plate (4), and projections of the fifth reinforcing plate (7) and the fourth reinforcing plate (6) in the height direction of the vehicle body are at least partially overlapped.