CN210941968U

CN210941968U - Auxiliary frame

Info

Publication number: CN210941968U
Application number: CN201921833829.4U
Authority: CN
Inventors: 赵岑; 郑文博; 王明; 王仕伟
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-07-07
Anticipated expiration: 2029-10-29

Abstract

The utility model belongs to the technical field of the electric motor car, a sub vehicle frame is disclosed, and the section of sub vehicle frame is "U" type to be equipped with a plurality of strengthening ribs at its back, the sub vehicle frame includes: the main body is in a shape like a Chinese character 'kou', two side beams of the main body are used for connecting a control arm and a steering gear, and a rear beam of the main body is used for connecting a rear suspension of a motor; the front connecting limbs are connected with two vertexes at the front end of the main body and used for connecting a vehicle body and arranging a motor front suspension; the rear connecting limbs are provided with two, the two rear connecting limbs are connected to two vertexes at the rear end of the main body, and the rear connecting limbs are used for connecting the vehicle body and arranging the front stabilizing rod. The utility model has the advantages that: the aluminum alloy material is adopted to effectively reduce the weight of parts, and the suspension is suitable for a front suspension system, so that the front suspension structure is reasonable in arrangement, and the suspension is suitable for the arrangement requirement of three suspensions of an electric drive system.

Description

Auxiliary frame

Technical Field

The utility model relates to an electric motor car technical field especially relates to an auxiliary vehicle frame.

Background

The auxiliary frame is an important component of a suspension system, provides mounting points for parts such as a control arm, a stabilizer bar and a power assembly suspension of the suspension, and transmits the force of the ground, the suspension system, the power system and the like to a vehicle body.

At present, the auxiliary frame of the passenger car is generally manufactured by the following schemes: (1) stamping, internal high-pressure and bending steel plates or pipes to form a tailor-welded structure; (2) the hollow/solid aluminum alloy is integrally cast into a molding structure; (3) the aluminum alloy casting, the extruded section and the stamped plate are in a splicing welding structure; the scheme (1) is a mainstream structure, is moderate in cost, but is generally high in weight, is not beneficial to the requirement of the electric vehicle on increasing the endurance mileage by the light weight of the chassis, and both the scheme (2) and the scheme (3) can play a good light weight effect, are mostly adopted in high-end vehicle types, but are high in cost; the structure of the part in the scheme (2) has great influence on the production process, and if the structural design is unreasonable, casting defects are easy to generate; the structure of scheme (3) splits the part into a plurality of subassemblies, has reduced the manufacturing degree of difficulty of each subassembly, but all has higher to welding and cast process level requirement, and the cost is higher, and welding quality control degree of difficulty is higher.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an auxiliary frame to solve current auxiliary frame weight big, with high costs, the higher problem of technology level.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a sub vehicle frame, sub vehicle frame is cast the aluminium material, sub vehicle frame's section is "U" type to be equipped with a plurality of strengthening ribs at its back, sub vehicle frame includes:

the main body is in a shape like a Chinese character 'kou', two side beams of the main body are used for connecting a control arm and a steering gear, and a rear beam of the main body is used for connecting a rear suspension of a motor;

the front connecting limbs are provided with two, the two front connecting limbs are connected to two vertexes at the front end of the main body, and the front connecting limbs are used for connecting a vehicle body and arranging a motor front suspension;

the rear connecting limbs are provided with two, the two rear connecting limbs are connected to two vertexes of the rear end of the main body, and the rear connecting limbs are used for connecting the automobile body and arranging the front stabilizer bars.

In a preferred embodiment of the subframe, the two side members of the main body are respectively provided with mounting brackets projecting outward, and the mounting brackets are of a double-lug structure and are used for connecting the control arms.

In a preferred embodiment of the subframe, first bosses for connecting the steering gear are provided on upper surfaces of the two side members of the main body and an upper surface of the rear member, respectively.

As a preferable scheme of the subframe, a second boss is arranged on the upper surface of the rear beam of the main body, and the second boss is used for connecting the rear suspension of the motor.

As a preferable mode of the subframe, the body is provided with a plurality of drainage lightening holes.

As a preferable scheme of the subframe, a third boss is arranged at the top end of the front connecting limb and the top end of the rear connecting limb, and the third boss is used for connecting the vehicle body.

As a preferable mode of the subframe, a first mounting surface is provided on an upper surface of the front connecting limb, the first mounting surface has a through hole for connecting the motor front suspension, and a second mounting surface is provided on an upper surface of the rear connecting limb, the second mounting surface has a through hole for connecting the front stabilizer bar.

As a preferable scheme of the subframe, the reinforcing ribs are mutually crossed, and a cylindrical structure is arranged at the crossed part.

The utility model has the advantages that: the cast aluminum material is adopted, so that the weight of the part can be effectively reduced; the auxiliary frame is suitable for a front suspension system, so that the front suspension structure is reasonable in arrangement, and the auxiliary frame is suitable for the arrangement requirements of three suspensions of an electric drive system; through reasonable structural design, each connecting point of the auxiliary frame is high in dynamic and static rigidity and overall mode, the durability is good, and the requirements of the chassis on stability, NVH (noise, vibration and harshness) performance and reliability can be met.

Drawings

Fig. 1 is a schematic view of a subframe according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another view angle of the subframe according to the embodiment of the present invention.

In the figure:

1-a body; 2-anterior connection limb; 3-posterior connection limb;

10-reinforcing ribs; 11-mounting a bracket; 12-a first boss; 13-a second boss; 14-drainage lightening holes; 20-a third boss; 21-a first mounting surface; 31-a second mounting surface;

101-cylindrical structure; 141-a first strip aperture; 142-second strip aperture.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The utility model provides a sub vehicle frame, this sub vehicle frame are whole for casting the aluminium material, as shown in figure 1 and figure 2, the section of sub vehicle frame is the U type to be equipped with a plurality of strengthening ribs 10 at the back.

In this embodiment, the sub vehicle frame adopts low pressure casting process integrated into one piece, and the sub vehicle frame structure is level and smooth, and the wall thickness is even, reduces the casting process degree of difficulty, and the sub vehicle frame has satisfied the sub vehicle frame through the structure of design strengthening rib 10 and has moved towards the requirement of bearing, has reduced sub vehicle frame casting deformation, has still reduced the sub vehicle frame technology and has made the degree of difficulty.

The auxiliary frame comprises a main body 1, a front connecting limb 2 and a rear connecting limb 3, wherein the main body 1 is in a square shape, two side beams of the main body 1 are used for connecting a control arm and a steering gear, and a rear beam of the main body 1 is used for connecting a motor rear suspension; the front connecting limbs 2 are two, the two front connecting limbs 2 are connected to two vertexes of the front end of the main body 1, and the front connecting limbs 2 are used for connecting a vehicle body and arranging a motor front suspension; the rear connecting limbs 3 have two, two rear connecting limbs 3 are connected at two vertexes of the rear end of the main body 1, and the rear connecting limbs 3 are used for connecting the vehicle body and arranging the front stabilizer bar.

Further, two side beams of the main body 1 are respectively provided with mounting brackets 11 protruding outwards, and the mounting brackets 11 are of a double-lug structure and are used for connecting control arms. Preferably, a rib is provided on the outer wall of the mounting bracket 11 to improve the strength and rigidity of the mounting bracket 11 and improve the bending and twisting resistance.

The upper surfaces of the two side beams and the upper surface of the rear beam of the main body 1 are respectively provided with a first boss 12, and the first bosses 12 are used for connecting a steering gear.

The upper surface of the back beam of the main body 1 is provided with a second boss 13, and the second boss 13 is used for connecting a motor rear suspension.

The body 1 is provided with a plurality of drainage lightening holes 14. For example, the main body 1 has 3 first holes 141 opened in the front side member upper end surface and a second hole 142 opened in the rear side member upper end surface and extending in the longitudinal direction. The weight-reducing drain holes 14 are arranged to drain water timely and reduce the weight of the main body 1.

The top ends of the front connecting limb 2 and the rear connecting limb 3 are respectively provided with a third boss 20, and the third bosses 20 are used for connecting the vehicle body. I.e., four third bosses 20, are used to connect four locations of the vehicle body.

The upper surface of the front connecting limb 2 is provided with a first mounting surface 21, the first mounting surface 21 is provided with a through hole and used for connecting a motor front suspension, the upper surface of the rear connecting limb 3 is provided with a second mounting surface 31, and the second mounting surface 31 is provided with a through hole and used for connecting a front stabilizing bar.

In the present embodiment, the first mounting surfaces 21 are flat surfaces, and each first mounting surface 21 is provided with two through holes (preferably threaded holes) for connecting the motor front suspension. The second mounting surfaces 31 are also flat surfaces, and each second mounting surface 31 is provided with two through holes (preferably threaded holes) for connecting the front stabilizer bar.

Referring to fig. 2, a plurality of reinforcing bars 10 are crossed with each other, and a cylindrical structure 101 is arranged at the crossed position, so that material nodules caused by the crossed reinforcing bars 10 are reduced, and the risk of casting defects is reduced.

The auxiliary frame provided by the utility model adopts cast aluminum material, which can effectively reduce the weight of parts; the auxiliary frame is suitable for a front suspension system, so that the front suspension structure is reasonable in arrangement, and the auxiliary frame is suitable for the arrangement requirements of three suspensions of an electric drive system; through reasonable structural design, each connecting point of the auxiliary frame is high in dynamic and static rigidity and overall mode, the durability is good, and the requirements of the chassis on stability, NVH (noise, vibration and harshness) performance and reliability can be met.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a sub vehicle frame, its characterized in that, sub vehicle frame is cast aluminium material, sub vehicle frame's section is "U" type to be equipped with a plurality of strengthening ribs (10) at its back, sub vehicle frame includes:

the main body (1) is in a shape like a Chinese character 'kou', two side beams of the main body (1) are used for connecting a control arm and a steering gear, and a rear beam of the main body (1) is used for connecting a motor rear suspension;

the front connecting limbs (2) are provided with two, the two front connecting limbs (2) are connected to two vertexes at the front end of the main body (1), and the front connecting limbs (2) are used for connecting a vehicle body and arranging a motor front suspension;

rear connecting limbs (3), rear connecting limbs (3) have two, two rear connecting limbs (3) are connected two summits in the rear end of main part (1), rear connecting limbs (3) are used for connecting the automobile body and arrange preceding stabilizer bar.

2. The subframe according to claim 1 wherein the two side members of the body (1) are each provided with an outwardly projecting mounting bracket (11), the mounting brackets (11) being of a two-lug structure and being adapted to connect the control arms.

3. The subframe according to claim 2 wherein the upper surfaces of both side members of said body (1) and the upper surface of said rear member are each provided with a first boss (12), said first bosses (12) being used for connecting said steering gears.

4. The subframe of claim 3 wherein the upper surface of the rear beam of the body (1) is provided with a second boss (13), said second boss (13) being used for connecting the motor rear suspension.

5. The subframe of any of claims 1-4 wherein said body (1) is provided with a plurality of drain lightening holes (14).

6. The subframe of claim 5 wherein the top ends of said front (2) and rear (3) connecting limbs are provided with a third boss (20), said third boss (20) being adapted to be connected to said body.

7. The subframe of claim 6 wherein the upper surface of said front connecting limb (2) is provided with a first mounting surface (21), said first mounting surface (21) having a through hole for connection to said motor front suspension, and the upper surface of said rear connecting limb (3) is provided with a second mounting surface (31), said second mounting surface (31) having a through hole for connection to said front stabilizer bar.

8. The subframe of claim 1 wherein a plurality of said ribs (10) are interdigitated with one another and are provided with a cylindrical structure (101) at the intersection.