CN204415516U - Fore sub frame mounting structure and automobile - Google Patents

Abstract

A front subframe installation structure, including a front floor and a rear section of a front cabin longitudinal beam and side beams located under the front floor, the front subframe installation structure also includes a first reinforcement plate, a second reinforcement plate and a front subframe Mounting seat, the first reinforcement plate is connected between the rear section of the front cabin longitudinal beam and the side beam, the first cavity is formed between the first reinforcement panel, the rear section of the front cabin longitudinal beam, the side beam and the front floor, and the second reinforcement The boards are stacked and fixed on the surface of the first reinforcement board facing the front floor, and the first cavity is divided into multiple cavities. The first reinforcement board and the second reinforcement board are provided with through installation holes at the stacking place, and the front The auxiliary frame mounting seat is installed at the lamination position of the first reinforcing plate and the second reinforcing plate and is located above the mounting hole. The installation structure of the front auxiliary frame of the utility model has a plurality of cavities, which can strengthen the structural strength of the vehicle body. At the same time, the utility model also discloses an automobile.

Description

Front subframe installation structure and automobile

technical field

The utility model relates to the technical field of automobiles, in particular to a front auxiliary frame installation structure and an automobile.

Background technique

The front sub-frame is an important component of the car chassis and has been widely used in modern cars. Usually, the front subframe is equipped with key components such as the front triangle swing arm, the front stabilizer bar, the steering machine and the rear suspension bracket of the engine. The integrated platform can also improve the overall strength and rigidity of the vehicle body, effectively improving collision safety and handling. In addition, during the use of the car, the front subframe can also isolate part of the vibration and noise from the suspension system, engine and transmission, as well as the force and vibration from the road surface, improving the comfort of the vehicle.

Fig. 1 is a schematic diagram of a conventional front sub-frame installation structure. As shown in Figure 1, the rear section 11 of the front cabin longitudinal beam is located below the front floor 12, and one side of the front floor 12 is also connected with a side beam 13, and the installation sleeve 14 is installed on the bottom wall of the front cabin longitudinal beam rear section 11, The front auxiliary frame (not shown) is installed on the bottom of the vehicle body through the cooperation of bolts and mounting sleeves 14 . However, in this installation structure, since the mounting sleeve 14 is directly installed on the bottom wall of the rear section 11 of the front cabin longitudinal beam, and there is no connection structure between the rear section 11 of the front cabin longitudinal beam and the side beam 13 to strengthen, the vehicle body The strength and stiffness are weak, which has a certain impact on the collision performance of the car.

Utility model content

The purpose of the utility model is to provide a front auxiliary frame installation structure which can strengthen the strength of the vehicle body.

The utility model provides a front sub-frame installation structure, which includes a front floor and a rear section of a front cabin longitudinal beam and side beams located below the front floor. The front sub-frame installation structure also includes a first reinforcement plate, a second reinforcement Plate and front sub-frame mounting seat, the first reinforcement plate is connected between the rear section of the front cabin longitudinal beam and the side beam, the first reinforcement panel, the rear section of the front cabin longitudinal beam, the side beam and the front A first cavity is jointly formed between the floors, and the second reinforcing plate is laminated and fixed on the surface of the first reinforcing plate facing the front floor, and divides the first cavity into a plurality of cavities, and the first The reinforcing plate and the second reinforcing plate are provided with a through mounting hole at the lamination position, and the front sub-frame mounting seat is installed at the laminating position of the first reinforcing plate and the second reinforcing plate and is located above the mounting hole.

Further, the middle part of the second reinforcement board is stacked and fixed with the middle part of the first reinforcement board, and the two ends of the second reinforcement board respectively extend to connect with the front floor and the rear section of the front cabin longitudinal beam, and the first reinforcement board The cavity is divided into a second cavity, a third cavity and a fourth cavity, the second cavity is located above the lamination of the first reinforcement plate and the second reinforcement plate, the front sub-frame mounting seat is located in the second cavity.

Further, the end of the first reinforcing plate corresponding to the side beam is welded to the bottom wall of the side beam, and the end of the second reinforcing plate corresponding to the side beam is upturned and extended to be welded with the lower surface of the front floor to form the first reinforcement plate. Three cavities.

Further, the edge of the lower surface of the front floor is welded and fixed to the side flange at the opening of the side beam, the second reinforcement plate is welded and fixed to the edge, and the first reinforcement plate, the second reinforcement plate and the edge of the side beam are welded and fixed. The third cavity is formed between the side walls, and the third cavity is triangular in shape.

Further, one end of the second reinforcing plate corresponding to the rear section of the front cabin longitudinal beam extends to be welded with the side wall of the rear section of the front cabin longitudinal beam, and the end of the first reinforcing plate corresponding to the rear section of the front cabin longitudinal beam is downward Bending and welding with the side wall of the rear section of the front cabin longitudinal beam, the fourth cavity is formed between the first reinforcement plate, the second reinforcement plate and the side wall of the rear section of the front cabin longitudinal beam, and the fourth cavity The cavity is triangular in shape.

Further, the front sub-frame mounting seat includes a threaded pipe and a threaded pipe fixing bracket, the bottom of the threaded pipe is welded and fixed to the second reinforcement plate, and the threaded pipe fixing bracket is sleeved on the outside of the threaded pipe and connected to the second reinforcement plate. The second reinforcing plate is welded and fixed, and the threaded pipe is provided with an internal threaded hole, and the internal threaded hole communicates with the mounting hole.

Further, the threaded pipe fixing bracket includes a connecting plate and a supporting boss, the connecting plate is located at the bottom of the supporting boss and is welded with the second reinforcing plate, and the top of the threaded pipe passes through the supporting boss and is connected to the second reinforcing plate. The supporting boss is welded and fixed.

Further, a support plate is provided at the bottom of the threaded pipe, and the support plate and the second reinforcement plate are welded and fixed, and the first reinforcement plate, the second reinforcement plate and the support plate form a stacked structure.

Further, the opening of the side beam is covered with a middle channel, and a fifth cavity is formed between the middle channel and the side beam, and the front floor covers the opening of the rear section of the front cabin longitudinal beam and is connected to the front cabin longitudinal beam. The rear section of the beam forms the sixth cavity.

The utility model also provides an automobile, which includes the above-mentioned front auxiliary frame installation structure.

In the embodiment of the present utility model, the first reinforcing plate is connected between the rear section of the front cabin longitudinal beam and the side beam, and forms a first cavity together with the front floor, the rear section of the front cabin longitudinal beam, and the side beam. The two reinforcing plates are laminated and fixed on the first reinforcing plate and divide the first cavity into a second cavity, a third cavity and a fourth cavity, wherein the third cavity and the fourth cavity are triangular cavities, which are traditionally The force path is better and the rigidity is better. At the same time, the multi-cavity structure is more stable when subjected to up and down pull forces, which is beneficial to improve the collision performance of the car body. On the other hand, a "sandwich" laminated structure is formed between the threaded pipe, the first reinforcing plate and the second reinforcing plate, and between the threaded pipe fixing bracket and the first reinforcing plate and the second reinforcing plate, and the threaded pipe is fixed The bracket further expands the rigid coverage area of the threaded pipe, making the structure of the utility model more stable and the assembly without eccentricity. In addition, the utility model has a simple structure and is easy to assemble. The welding height of the first reinforcement plate can be adjusted by adjusting the welding position between the first reinforcement plate and the rear section of the front cabin longitudinal beam and the side beam, thereby adjusting the height of the threaded pipe mounting seat. The height makes the installation height of the front subframe in the Z direction (the height direction of the vehicle body) adjustable, which can meet the commonality of the platform. At the same time, the utility model uses the threaded pipe, the threaded pipe fixing bracket and the triangular multi-cavity structure, so that the exciting force received by the threaded pipe is effectively transmitted to the front cabin longitudinal beam and the side beam, and avoids being transmitted to the front floor, thereby effectively Improve the car's NVH (Noise, Vibration, Harshness, noise, vibration and harshness) performance and passenger comfort.

Description of drawings

Fig. 1 is a schematic diagram of a conventional front sub-frame installation structure.

Fig. 2 is a schematic diagram of the installation structure of the front sub-frame in an embodiment of the present invention.

Detailed ways

In order to further explain the technical means and effects of the utility model to achieve the intended purpose of the utility model, the specific implementation, structure, features and effects of the utility model will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. .

Fig. 2 is a schematic diagram of the installation structure of the front sub-frame in an embodiment of the present invention. The following front, rear, left, and right directions in the actual use of the previous sub-frame are the reference directions of this application, and the Z direction represents the height in the vertical direction. As shown in Figure 2, the installation structure of the front sub-frame of the present utility model includes a front floor 21 and a front cabin longitudinal beam rear section 22 and side beams 23 located below the front floor 21, and the edge of the front floor 21 and the opening of the side beam 23 The edge of the side beam is welded and fixed, the opening of the side beam 23 is covered with a middle channel 28, a fifth cavity 205 is formed between the middle channel 28 and the side beam 23, and the front floor 21 covers the opening of the rear section 22 of the front cabin longitudinal beam And the sixth cavity 206 is formed with the rear section 22 of the front cabin longitudinal beam. Further, the front subframe installation structure also includes a first reinforcement plate 24, a second reinforcement plate 25 and a front subframe mounting seat 26, and the first reinforcement plate 24 is connected to the rear section 22 of the front compartment longitudinal beam and the side beam 23 Between the first reinforcement plate 24, the rear section 22 of the front cabin longitudinal beam, the side beam 23 and the front floor 21 jointly form the first cavity 201, and the second reinforcement plate layer 25 is laminated and fixed on the first reinforcement plate 24 facing forward. On the surface of one side of the floor 21, and divide the first cavity 201 into a plurality of cavities, the first reinforcing plate 24 and the second reinforcing plate 25 are provided with a through installation hole 29 at the stacking place, that is, the installation hole 29 communicates The first cavity 201 and the outer space, the front sub-frame mounting base 26 are installed at the lamination position of the first reinforcing plate 24 and the second reinforcing plate 25 and are located above the mounting hole 29 .

Specifically, the middle part of the second reinforcing plate 24 is laminated and welded to the middle part of the first reinforcing plate 25, and the two ends of the second reinforcing plate 24 respectively extend to connect with the front floor 21 and the rear section 22 of the front cabin longitudinal beam, thereby connecting the first A cavity 201 is divided into a second cavity 202 , a third cavity 203 and a fourth cavity 204 . Wherein, the second cavity 203 is located above the lamination of the first reinforcing plate 24 and the second reinforcing plate 25, the mounting hole 29 communicates with the second cavity 202 and the external space, and the front sub-frame mounting seat 26 is located in the second cavity. chamber 202. One end of the first reinforcing plate 24 corresponding to the side beam 23 is welded to the bottom wall of the side beam 23 , and one end of the second reinforcing plate 25 corresponding to the side beam 23 is upturned and extended to be welded with the lower surface of the front floor 21 to form the third cavity 203. Further, in this embodiment, the edge of the lower surface of the front floor 21 is welded and fixed to the side flange at the opening of the side beam 23, and the second reinforcement plate 24 is welded and fixed to the edge, so that the first reinforcement plate 24, the second reinforcement plate 24 The third cavity 203 formed between the reinforcing plate 25 and the side wall of the side beam 23 has a triangular structure.

Continuing from the above, one end of the second reinforcing plate 25 corresponding to the rear section 22 of the front cabin longitudinal beam extends to be welded with the side wall of the rear section 22 of the front cabin longitudinal beam, and one end of the first reinforcing plate 24 corresponding to the rear section 22 of the front cabin longitudinal beam is downward Bending and welding with the side wall of the rear section 22 of the front cabin longitudinal beam, so that the fourth cavity 204 is formed between the first reinforcement plate 24, the second reinforcement panel 25 and the side wall of the front cabin longitudinal beam rear section 22, and The fourth cavity 204 has a triangular shape. In this way, the second cavity 202 is the cavity formed between the second reinforcing plate 25 , the front floor 21 and the side wall of the rear section 22 of the front cabin longitudinal beam. It should be noted that the welding position between the second reinforcing plate 25 and the rear section 22 of the front cabin longitudinal beam and the side beam 23 is not limited to the figure, and it only needs to meet the requirement that the second reinforcing plate 25 separates the first cavity 201 It is sufficient to form a plurality of cavities, and these cavities include cavities with a triangular structure.

In the existing installation structure, as shown in Figure 1, the installation sleeve 14 is directly installed on the rear section 11 of the front cabin longitudinal beam. When considering the commonality of the installation structure from the perspective of platformization, due to the Due to the particularity of the structural design, there are usually few changes between different platform models, so that the installation height of the installation sleeve 14 in the Z direction is limited by the height of the rear section 11 of the front cabin longitudinal beam and cannot be adjusted, and thus the front panel cannot be adjusted. The installation height of the sub-frame in the Z direction cannot meet the platform requirements. The utility model installs the front sub-frame mounting seat 26 on the lamination place of the first reinforcement plate 24 and the second reinforcement plate 25, and the assembly between the first reinforcement plate 24, the second reinforcement plate 25 and the vehicle body is simple, and it is easy to change and match. The welding position of the vehicle body, so that the welding height of the first reinforcement plate 24 can be changed according to the needs of the actual vehicle model to adjust the installation height of the front sub-frame mounting seat 26 in the Z direction, and then adjust the installation height of the front sub-frame in the Z direction , to meet the platform design requirements of automobiles.

Following the above, as shown in Figure 2, the front sub-frame mounting base 26 includes a threaded pipe 261 and a threaded pipe fixing bracket 262, the bottom of the threaded pipe 261 is welded and fixed to the upper surface of the second reinforcement plate 25, and the threaded pipe fixing bracket 262 sets It is arranged on the outside of the threaded pipe 261 and fixed by welding with the second reinforcement plate 25. The threaded pipe 261 is provided with an internally threaded hole 261a, and the internally threaded hole 261a communicates with the mounting hole 29. The front subframe (not shown) is connected by bolts, etc. Parts pass through the mounting hole 29 and cooperate with the threaded pipe 261 to be installed on the vehicle body. In this embodiment, the bottom of the threaded pipe 261 is also provided with a support plate 261b, and the support plate 261b and the second reinforcement plate 25 are welded and fixed, and a "" is formed between the first reinforcement plate 24, the second reinforcement plate 25 and the support plate 261b "sandwich" layered structure.

Further, the threaded pipe fixing bracket 262 includes a supporting boss 262a and a connecting plate 262b. The connecting plate 262b is located at the bottom of the supporting boss 262a and is welded and fixed to the upper surface of the second reinforcing plate 25. The first reinforcing plate 24, the second reinforcing plate A "sandwich" laminated structure is formed between the plate 25 and the connecting plate 262b, and the top of the threaded pipe 261 passes through the supporting boss 262a and is welded and fixed with the supporting boss 262a. In this embodiment, the supporting boss 262a is a bowl-shaped cavity structure, and is fixed upside down above the mounting hole 29, its bottom is welded and fixed to the second reinforcing plate 25 through the connecting plate 262b, and its top is provided with a useful Through the fixing hole (not shown) on the top of the fixing threaded pipe 261, the cavity design of the supporting boss 262a can further reduce the weight of the vehicle body while ensuring the supporting effect.

The utility model also provides an automobile, which includes the above-mentioned front auxiliary frame installation structure.

To sum up, the installation structure of the front sub-frame of the utility model has the following beneficial effects:

1. The first reinforcement plate is connected between the rear section of the front cabin longitudinal beam and the side beam, and forms the first cavity together with the front floor, the rear section of the front cabin longitudinal beam, and the side beam, and the second reinforcement panel is stacked and fixed on the The first reinforcement plate divides the first cavity into the second cavity, the third cavity and the fourth cavity, wherein the third cavity and the fourth cavity are triangular cavities, the force transmission path is better, and the rigidity Better, at the same time, the multi-cavity structure is more stable when subjected to up and down pull forces, which is conducive to improving the collision performance of the car body;

2. Between the threaded pipe, the first reinforcing plate and the second reinforcing plate, and between the threaded pipe fixing bracket and the first reinforcing plate and the second reinforcing plate, a “sandwich” stacked structure is formed, and the threaded pipe fixing bracket further Enlarging the rigid coverage area of the threaded pipe makes the structure of the utility model more stable and the assembly without eccentricity;

3. The utility model has a simple structure and is easy to assemble. The welding height of the first reinforcement plate can be adjusted by adjusting the welding position between the first reinforcement plate and the rear section of the front cabin longitudinal beam and the side beam, thereby adjusting the threaded pipe mounting seat at The height in the Z direction (the height direction of the vehicle body) makes the installation height of the front sub-frame in the Z direction adjustable, which can meet the platform commonality requirements;

4. Through the threaded pipe, the threaded pipe fixing bracket and the triangular multi-cavity structure, the utility model enables the exciting force received by the threaded pipe to be effectively transmitted to the front cabin longitudinal beam and the side beam, and avoids being transmitted to the front floor, thereby effectively Improve the vehicle's NVH (Noise, Vibration, Harshness, noise, vibration and harshness) performance and passenger comfort.

The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those who are familiar with this profession, without departing from the scope of the technical solution of the present utility model, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all without departing from the technical solution of the utility model Content, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (10)

1. A front sub-frame installation structure, comprising a front floor and a rear section of the front cabin longitudinal beam and side beams located below the front floor, characterized in that: the front sub-frame installation structure also includes a first reinforcing plate, a second Two reinforcement plates and the mounting seat of the front sub-frame, the first reinforcement plate is connected between the rear section of the front cabin longitudinal beam and the side beam, the first reinforcement panel, the rear section of the front cabin longitudinal beam, the side beam and A first cavity is jointly formed between the front floors, and the second reinforcing plate is laminated and fixed on the surface of the first reinforcing plate facing the front floor, and divides the first cavity into a plurality of cavities. The first reinforcing plate and the second reinforcing plate are provided with a through installation hole at the stacking position, and the front sub-frame mounting seat is installed at the stacking position of the first reinforcing plate and the second reinforcing plate and is located above the mounting hole . 2. The installation structure of the front sub-frame according to claim 1, wherein the middle part of the second reinforcing plate is stacked and fixed with the middle part of the first reinforcing plate, and the two ends of the second reinforcing plate respectively extend to The front floor is connected to the rear section of the front cabin longitudinal beam, and the first cavity is divided into a second cavity, a third cavity and a fourth cavity, and the second cavity is located between the first reinforcing plate and the second cavity. Above the lamination of the two reinforcing plates, the mounting seat of the front sub-frame is located in the second cavity. 3. The installation structure of the front sub-frame as claimed in claim 2, characterized in that: one end of the first reinforcing plate corresponding to the side beam is welded to the bottom wall of the side beam, and the second reinforcing plate corresponds to the end of the side beam One end is upturned and extended to be welded with the lower surface of the front floor to form the third cavity. 4. The installation structure of the front sub-frame according to claim 3, wherein the edge of the lower surface of the front floor is welded and fixed to the side flange at the opening of the side beam, and the second reinforcing plate is welded and fixed to the edge The third cavity is formed between the first reinforcing plate, the second reinforcing plate and the side wall of the side beam, and the third cavity is triangular in shape. 5. The installation structure of the front sub-frame as claimed in claim 2, characterized in that: the second reinforcing plate corresponds to one end of the rear section of the front cabin longitudinal beam and extends to weld with the side wall of the rear section of the front cabin longitudinal beam, One end of the first reinforcing plate corresponding to the rear section of the front cabin longitudinal beam is bent downward and welded with the side wall of the rear section of the front cabin longitudinal beam. The fourth cavity is formed between the side walls of the segments, and the fourth cavity is triangular in shape. 6. The mounting structure of the front sub-frame according to claim 1, wherein the mounting seat of the front sub-frame comprises a threaded pipe and a threaded pipe fixing bracket, the bottom of the threaded pipe is welded and fixed to the second reinforcing plate, The threaded pipe fixing bracket is sleeved on the outside of the threaded pipe and welded and fixed with the second reinforcing plate. The threaded pipe is provided with an internal threaded hole, and the internal threaded hole communicates with the mounting hole. 7. The installation structure of the front sub-frame as claimed in claim 6, wherein the threaded pipe fixing bracket comprises a connecting plate and a supporting boss, the connecting plate is located at the bottom of the supporting boss and connected to the second reinforcing plate It is welded and fixed, and the top of the threaded pipe passes through the supporting boss and is welded and fixed with the supporting boss. 8. The mounting structure of the front sub-frame as claimed in claim 6, characterized in that: the bottom of the threaded pipe is provided with a support plate, the support plate is welded and fixed to the second reinforcement plate, the first reinforcement plate, the second reinforcement plate The reinforcing plate and the supporting plate form a laminated structure. 9. The installation structure of the front sub-frame according to claim 1, characterized in that: the opening of the side beam is covered with a middle channel, a fifth cavity is formed between the middle channel and the side beam, and the front floor covers A sixth cavity is formed at the opening of the rear section of the front cabin longitudinal beam and with the rear section of the front cabin longitudinal beam. 10. An automobile, characterized in that the automobile comprises the front sub-frame mounting structure according to any one of claims 1-9.