CN217598684U - Front auxiliary frame and vehicle - Google Patents

Abstract

The utility model relates to a preceding sub vehicle frame and vehicle, wherein preceding sub vehicle frame includes the crossbeam and sets up first longeron and the second longeron at the both ends of crossbeam symmetrically, and first longeron and second longeron are provided with preceding connection point position and back connection point position along the extending direction interval respectively, and preceding connection point position and back connection point position are used for passing through the surface of fastener direct mount to first longeron and second longeron with the automobile body. Through above-mentioned technical scheme, the connection point location directly sets up in the front on sub vehicle frame body, avoids the great linking bridge of welding height drop again, makes the collision can directly transmit to the sub vehicle frame in the front, sub vehicle frame crumple energy-absorbing's efficiency before the full play.

Description

Front auxiliary frame and vehicle

Technical Field

The present disclosure relates to a vehicle chassis, and more particularly, to a front subframe and a vehicle having the same.

Background

The front auxiliary frame is an important component of the vehicle chassis, can weaken vibration transmitted into a vehicle body from a road surface, and improves the comfort and stability in the driving process. In the related technology, a large drop exists between the mounting surface of the vehicle body and the front auxiliary frame in height, which is not beneficial to collision and force transmission, and further leads to unsatisfactory collapse and energy absorption effects of the front auxiliary frame.

SUMMERY OF THE UTILITY MODEL

It is a first object of the present disclosure to provide a front subframe that facilitates transmission of forces from an impact.

In order to achieve the above object, the present disclosure provides a front subframe, including a cross beam, and a first longitudinal beam and a second longitudinal beam symmetrically disposed at two ends of the cross beam, where the first longitudinal beam and the second longitudinal beam are respectively provided with a front connection point location and a rear connection point location at intervals along an extending direction, and the front connection point location and the rear connection point location are used for directly mounting a vehicle body to surfaces of the first longitudinal beam and the second longitudinal beam through fasteners.

Optionally, the height difference between the front connection point and the rear connection point is 0-35 mm.

Optionally, an angle between a connection line between the front connection point location and the rear connection point location and a horizontal plane is 0 to 3 °.

Optionally, the first longitudinal beam and the second longitudinal beam further comprise an intermediate connection point disposed between the front connection point and the rear connection point for mounting a vehicle body directly to a surface of the first longitudinal beam and the second longitudinal beam via a fastener.

Optionally, a cleat structure is arranged between the front connection point and the rear connection point of the first longitudinal beam and the second longitudinal beam, and a reinforcing connection point used for being connected with a vehicle body is arranged on the cleat structure.

Optionally, the cross member, the first longitudinal member and the second longitudinal member are each configured as a hollow structure.

Optionally, the rear end of the first longitudinal beam is provided with a first suspension connecting support, the rear end of the second longitudinal beam is provided with a second suspension connecting support, the cross beam is provided with a third suspension connecting support, and the position point connecting lines of the first suspension connecting support, the second suspension connecting support and the third suspension connecting support form a triangular structure.

Optionally, the front subframe further comprises an auxiliary anti-collision beam, the auxiliary anti-collision beam is arranged at the front end of the front subframe, and two ends of the auxiliary anti-collision beam are connected with the front end of the first longitudinal beam and the front end of the second longitudinal beam through energy absorption boxes respectively.

Optionally, a distance between a front end of the first longitudinal beam and a front end of the second longitudinal beam is greater than a length of the cross beam in the left-right direction.

Optionally, a compressor mounting bracket is arranged on the cross beam, the compressor mounting bracket is arranged on one side, facing the front end of the front auxiliary frame, of the cross beam, and compressor mounting holes are formed in the front ends of the first longitudinal beam and the second longitudinal beam and the compressor mounting bracket respectively.

Optionally, a stabilizer bar mounting hole for mounting a stabilizer bar is provided at a position of the first longitudinal beam and the second longitudinal beam corresponding to the cross beam.

Optionally, a water pump connecting bracket for installing a water pump is arranged on the cross beam.

Optionally, the rear ends of the first longitudinal beam and the second longitudinal beam are respectively provided with a lower swing arm connecting hole for being mounted with a front lower swing arm.

It is a second object of the present disclosure to provide a vehicle including a front subframe as described in any of the above.

Optionally, the vehicle is a purely electric vehicle.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: compared with the prior art that the vehicle body is arranged on the front auxiliary frame through the support with large height drop, the first longitudinal beam and the second longitudinal beam of the front auxiliary frame are respectively provided with the front connecting point position and the rear connecting point position along the extending direction at intervals, so that the vehicle body is directly arranged on the surfaces of the first longitudinal beam and the second longitudinal beam through the fasteners, namely, the connecting point positions are directly arranged on the front auxiliary frame body through the structure, the connecting support with large height drop is prevented from being welded, collision can be directly transmitted to the front auxiliary frame, and the efficiency of crumpling, shrinkage and energy absorption of the front auxiliary frame is fully exerted.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

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

FIG. 1 is a schematic view of a front subframe provided in an exemplary embodiment of the present disclosure.

FIG. 2 is a schematic view of another front subframe provided in an exemplary embodiment of the present disclosure.

FIG. 3 is a schematic view of yet another front subframe provided in an exemplary embodiment of the present disclosure.

FIG. 4 is a schematic view of yet another front subframe provided in an exemplary embodiment of the present disclosure.

FIG. 5 is a top view of the front subframe of FIG. 4.

FIG. 6 is a front view of the front subframe of FIG. 5.

FIG. 7 is a cross-sectional view of the front subframe of FIG. 5.

Description of the reference numerals

1-cross beam, 11-compressor mounting bracket, 111-compressor mounting hole, 12-water pump connecting bracket, 2-first longitudinal beam, 211-front connecting point position, 212-middle connecting point position, 213-rear connecting point position, 22-lower swing arm mounting hole, 221-front lower swing arm mounting hole, 222-rear lower swing arm mounting hole, 231-first suspension connecting bracket, 232-second suspension connecting bracket, 233-third connecting bracket, 24-steering gear mounting hole, 25-stabilizer bar mounting hole, 3-second longitudinal beam, 4-goat's horn structure, 41-reinforcing connecting point position, 5-energy-absorbing box, 6-auxiliary anti-collision beam, 61-auxiliary anti-collision beam body, 62-auxiliary anti-collision beam connecting bracket, d-height difference and alpha-included angle.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Unless otherwise specified, use of the terms of orientation such as "upper, lower, left, right" are defined according to the directions indicated in the respective drawings, and "inner" and "outer" refer to the inner and outer of the contours of the respective parts themselves. Furthermore, the terms "first," "second," and the like, as used herein, are intended to distinguish one element from another, and not necessarily to distinguish between order and importance.

As shown in fig. 1, the present disclosure provides a front subframe, which includes a cross beam 1, and a first longitudinal beam 2 and a second longitudinal beam 3 symmetrically disposed at two ends of the cross beam 1, wherein the first longitudinal beam 2 and the second longitudinal beam 3 are respectively provided with a front connection point 211 and a rear connection point 213 at intervals along an extending direction, and the front connection point 211 and the rear connection point 213 are used for directly mounting a vehicle body to surfaces of the first longitudinal beam 2 and the second longitudinal beam 3 through fasteners. In the front subframe mounted on the rear side of the vehicle chassis, the side members extend in the front-rear direction of the vehicle, and the cross member 1 extends in the width direction of the vehicle. It should be noted that, here, the front connection point 211 and the rear connection point 213 are divided by the position of the cross beam 1, and as shown in fig. 1, the partial region of the first longitudinal beam 2 and the second longitudinal beam 3 connected to the cross beam 1 may be referred to as a middle region of the front subframe, a region extending from the middle region to the front end is a front region, and a region extending from the middle region to the rear end is a rear region, wherein the front connection point 211 is disposed in the front region, and the rear connection point 213 is disposed in the rear region.

In the related art, the front sub-frame is generally provided with a rear cross member having both ends fixedly connected to positions of rear ends of the first and second side members 2 and 3, respectively, and the vehicle body is mounted on the rear cross member at a rear region of the front sub-frame via a bracket having a height drop. This disclosed preceding sub vehicle frame has cancelled the rear end rail, has on the one hand, does benefit to the whole weight that reduces preceding sub vehicle frame to reduce the consumption to the energy, on the other hand, especially be applied to pure electric vehicles in, because the battery package is arranged at the rear portion region of preceding sub vehicle frame usually, this disclosure cancels the rear end rail and can make the contribution of preceding sub vehicle frame rear portion space maximize give the battery package, for example the quantity of module in the extension battery package, effectively improves pure electric vehicles duration.

After the rear cross beam is eliminated, the connection points of the front auxiliary frame for mounting with the vehicle body are arranged on the first longitudinal beam 2 and the second longitudinal beam 3, and the vehicle body is directly mounted on the surfaces of the first longitudinal beam 2 and the second longitudinal beam 3 through fasteners. The term "direct" here is compared to the "indirect" mounting in the related art by means of a bracket having a height drop. For example, threaded pipes may be welded at the front connection points 211 and the rear connection points 213, and the front subframe may be screwed to the vehicle body by means of hexagon flange bolts.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: compared with the prior art that the vehicle body is arranged on the front auxiliary frame through the support with large height drop, the first longitudinal beam 2 and the second longitudinal beam 3 of the front auxiliary frame are respectively provided with the front connecting point position and the rear connecting point position along the extending direction at intervals, so that the vehicle body is directly arranged on the surfaces of the first longitudinal beam 2 and the second longitudinal beam 3 through the fasteners, namely, the connecting point positions are directly arranged on the body of the front auxiliary frame, the connecting support with large height drop is prevented from being welded, collision can be directly transmitted to the front auxiliary frame, and the efficiency of crumpling and energy absorption of the front auxiliary frame is fully exerted.

With simultaneous reference to fig. 5 to 7, the cross member 1, the first longitudinal member 2 and the second longitudinal member 3 are of a flat structure in the extending direction. Specifically, in some embodiments, as shown in fig. 7a, the height difference between the front connection point 211 and the rear connection point 213 is 0 mm to 35 mm, and optionally, the height drop d between the front connection point 211 and the rear connection point 213 is 27 mm. In other embodiments, as shown in fig. 7b, the angle α between the line connecting the front connection point location 211 and the rear connection point location 213 and the horizontal plane is 0-3 °, and optionally the angle between the line connecting the front connection point location 211 and the rear connection point location 213 and the horizontal plane is 2 °. The flat structure of the front auxiliary frame is more beneficial to the transmission of collision, so that the front auxiliary frame is better in crumpling and energy absorbing effects. It should be noted that the flat structure herein does not mean that the height difference between the front connection point 211 and the rear connection point 213 is absolutely zero, but has an appropriate fluctuation difference within the above-mentioned optional range while not affecting the collapse energy absorption effect.

In some embodiments, as shown in fig. 2, the first side member 2 and the second side member 3 further include an intermediate connection point 212 disposed between the front connection point 211 and the rear connection point 213, and in particular, the intermediate connection point 212 is disposed at a middle region of the front subframe, and is used for directly mounting the vehicle body to the surfaces of the first side member 2 and the second side member 3 through fasteners. According to the six-point connection mode, six connection points are arranged on the longitudinal beams on the left side and the right side, and the connection strength between the six connection points and a vehicle body can be still met when the connection points are required to be as few as possible. In addition, the middle connection point 212 is the same as the front connection point 211 and the rear connection point 213, and the vehicle body is directly mounted on the surfaces of the two longitudinal beams through fasteners, so that the connection bracket with large height difference can be prevented from being welded, the collision can be directly transmitted to the front subframe, and the crumpling and energy absorption effects of the front subframe can be fully exerted.

In other embodiments, as shown in fig. 3 and 4, the first longitudinal beam 2 and the second longitudinal beam 3 are provided with a cleat structure 4 between the front connection point 211 and the rear connection point 213, and the cleat structure 4 is provided with a reinforcing connection point 41 for connecting with the vehicle body. Different from the above embodiment, the intermediate connection point position 212 capable of directly mounting the vehicle body to the surfaces of the first longitudinal beam 2 and the second longitudinal beam 3 is not arranged in the middle area of the front subframe, but the claw structure 4 is arranged, so that the design difficulty of the vehicle body is reduced by arranging the claw structure 4, and meanwhile, the connection strength between the front subframe and the vehicle body can be increased by the claw structure 4.

In some embodiments, the cross member 1, the first longitudinal member 2, and the second longitudinal member 3 are each configured as a hollow structure. The hollow structure is beneficial to reducing the whole weight of the front auxiliary frame, the light-weight front auxiliary frame is beneficial to improving the cruising ability of the vehicle, and simultaneously, the noise and vibration of the chassis in the running process of the vehicle are improved, and the driving comfort is improved.

Taking purely electric as an example, when the vehicle is equipped with a front driving assembly, a suspension bracket of the corresponding driving assembly may be arranged on the front subframe, and in some embodiments, as shown in fig. 4, a first suspension connecting bracket 231 is arranged at the rear end of the first longitudinal beam 2, a second suspension connecting bracket 232 is arranged at the rear end of the second longitudinal beam 3, and a third suspension connecting bracket 233 is arranged on the cross beam 1. The connecting lines of the position points of the first, second and third suspension connecting brackets 231, 232 and 233 are formed in a triangular structure. A hexagonal flange nut can be welded at each suspension connecting support, so that the pure electric drive motor assembly is fixed to the front auxiliary frame through three-point suspension in a threaded mode. The mounting structure which is spatially configured to be triangular is beneficial to improving the mounting stability of the driving assembly and reducing the vibration caused by the driving assembly to the vehicle body. Of course, if the vehicle is equipped with a rear drive assembly, as shown in fig. 1, it is not necessary to provide a suspension bracket on the front subframe.

In some embodiments, the front subframe further comprises a secondary impact beam 6, the secondary impact beam 6 is disposed at the front end of the front subframe, and two ends of the secondary impact beam 6 are respectively connected with the front end of the first longitudinal beam 2 and the front end of the second longitudinal beam 3 through the energy absorption box 5. And a secondary anti-collision beam 6 is added, and two ends of the secondary anti-collision beam 6 are connected with the front ends of the first longitudinal beam 2 and the second longitudinal beam 3 through an energy absorption box 5. When a vehicle is collided, the auxiliary anti-collision beam 6 is stressed to displace, and then the energy absorption box 5 is extruded to enable the energy absorption box 5 to deform and collapse. The auxiliary anti-collision beam 6 and the energy absorption box 5 can greatly improve the capacity of the vehicle for absorbing collision energy, effectively improve the safety level of the vehicle, and can ensure that the vehicle collision safety can achieve better effect through the optimization of the structure of the energy absorption box 5.

In some embodiments, the distance between the front end of the first side member 2 and the front end of the second side member 3 is greater than the length of the cross member 1 in the left-right direction. The front end of the first longitudinal beam 2 and the front end of the second longitudinal beam 3 extend away from each other, or the front end of the first longitudinal beam 2 and the front end of the second longitudinal beam 3 have a tendency to flare. Specifically, the two ends of the cross beam 1 are respectively connected with the front portion of the first longitudinal beam 2 and the front portion of the second longitudinal beam 3, the first longitudinal beam 2 and the second longitudinal beam 3 can extend to the front portion of the cross beam 1 of the front subframe and have an outward expansion trend, so that the width area of the auxiliary anti-collision beam 6 in the left and right directions of the vehicle can be increased, the anti-collision capacity is improved, meanwhile, the applicability capacity for vehicles with different widths can be improved by adjusting the distance between the front end of the first longitudinal beam 2 and the front end of the second longitudinal beam 3, that is, the vehicles with different widths have different width requirements on the auxiliary anti-collision beam 6 in the left and right directions of the vehicle, the distance between the front end of the first longitudinal beam 2 and the front end of the second longitudinal beam 3 can be adjusted by adjusting the extending direction and the extending distance towards each other, and therefore the front subframe can adapt to vehicles with different widths.

In a specific application, the front subframe may also serve the purpose of carrying some functional components, and referring to fig. 1 and fig. 2, in some embodiments, the cross beam 1 may further be provided with a compressor mounting bracket 11, the compressor mounting bracket 11 is disposed on a side of the front end of the cross beam 1 facing the front subframe, and the front ends of the first longitudinal beam 2 and the second longitudinal beam 3 and the compressor mounting bracket 11 are respectively provided with a compressor mounting hole 111, similar to a mounting point forming a triangle with a relatively stable structure. Projection nuts may be provided at the compressor mounting holes 111 for coupling with the compressor. In other embodiments, steering gear mounting holes 24 may also be provided in the first longitudinal beam 2 and the second longitudinal beam 3 at positions substantially corresponding to the cross beam 1. In still other embodiments, a stabilizer bar mounting hole 25 for mounting a stabilizer bar is provided at a position of the first side member 2 and the second side member 3 corresponding to the cross member 1, and a hexagonal flange bolt/nut combination may be provided at the stabilizer bar mounting hole 25. Wherein a steering gear mounting hole 24 and a stabilizer bar mounting hole 25 are provided on the opposite top and bottom surfaces of the side member, respectively, and the steering gear mounting hole 24 is on the same side as the compressor mounting hole 111. The mounting position of above-mentioned compressor, steering engine and stabilizer bar all is located the preceding middle part region of preceding sub vehicle frame, and this kind of arrangement makes especially in pure electric vehicle type, is favorable to making the contribution of preceding sub vehicle frame rear portion space maximize for the battery package, effectively improves pure electric vehicle duration.

In some embodiments, the cross beam 1 may further be provided with a water pump connecting bracket 12 for mounting a water pump. In addition, the rear ends of the first longitudinal beam 2 and the second longitudinal beam 3 may be respectively provided with a lower swing arm mounting hole 22 for connecting with the front lower swing arm, and the lower swing arm mounting hole 22 includes a front lower swing arm mounting hole 221 and a rear lower swing arm mounting hole 222. Wherein, the water pump mounting hole department can set up projection nut, and lower swing arm mounting hole 222 is inside can the welding thread sleeve pipe.

According to a second aspect of the present disclosure, a vehicle is provided, which includes the front subframe in any of the above embodiments, and has all the advantages thereof, and the details are not repeated herein. The vehicle disclosed by the invention can be used for pure electric vehicles, and the cruising ability of the pure electric vehicles can be improved.

The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various features described in the foregoing embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (12)

1. The utility model provides a preceding sub vehicle frame, its characterized in that includes the crossbeam and sets up symmetrically first longeron and the second longeron at the both ends of crossbeam, first longeron with the second longeron is provided with preceding hookup location and back hookup location along the extending direction interval respectively, preceding hookup location with back hookup location is used for passing through the fastener direct mount with the automobile body first longeron with the surface of second longeron.

2. The front subframe of claim 1 wherein said front attachment point locations and said rear attachment point locations have a difference in height of 0-35 mm.

3. The front subframe of claim 1 wherein a line connecting said front connection point and said rear connection point is angled from 0 ° to 3 ° from a horizontal plane.

4. The front subframe of claim 1 wherein said first and second side members further include intermediate attachment points disposed between said front and rear attachment points for mounting a vehicle body directly to surfaces of said first and second side members with fasteners.

5. The front subframe of claim 1 wherein said first and second longitudinal members have a goat corner structure disposed between said front and rear connection points, said goat corner structure having a reinforcement connection point for connection to a vehicle body.

6. The front subframe of claim 1 wherein said cross member, said first side member and said second side member are each configured as a hollow structure.

7. The front subframe of claim 1 wherein said first longitudinal member has a first suspension bracket at a rear end thereof, said second longitudinal member has a second suspension bracket at a rear end thereof, said cross member has a third suspension bracket at a rear end thereof, and a connecting line of points of said first, second and third suspension brackets is formed in a triangular configuration.

8. The front subframe of claim 1 further comprising a secondary impact beam disposed at a front end of the front subframe, wherein two ends of the secondary impact beam are connected to a front end of the first longitudinal beam and a front end of the second longitudinal beam via crash boxes, respectively.

9. The front subframe of claim 8 wherein a distance between a front end of said first side member and a front end of said second side member is greater than a length of said cross member in a left-right direction.

10. The front subframe of claim 1 wherein said cross member has a compressor mounting bracket disposed thereon, said compressor mounting bracket being disposed on a side of said cross member facing a front end of said front subframe, said front ends of said first and second side members and said compressor mounting bracket having respective compressor mounting holes disposed therein.

11. A vehicle comprising a front sub-frame according to any one of claims 1 to 10.

12. The vehicle of claim 11, characterized in that the vehicle is a purely electric vehicle.

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