Platformization front subframe for suspension power system

Abstract

The utility model discloses a platform front auxiliary frame for suspending a power system, which relates to the technical field of automobiles and comprises a front auxiliary frame body and an auxiliary frame front cross beam arranged on the front auxiliary frame body, and a rear suspension component for mounting a motor or an engine is arranged on the front auxiliary frame body close to the middle. Side suspension mounting positions used for mounting a pure electric vehicle type motor are arranged at the positions, close to the two ends, of the front cross beam of the auxiliary frame. When the front auxiliary frame body is used for a hybrid power vehicle model, the rear suspension assembly is matched with the left suspension support and the right suspension support on the longitudinal beam, so that an engine of the hybrid power vehicle model is arranged in a three-point pendulum mode. When the front auxiliary frame body is used for a pure electric vehicle, the two sides of the motor are installed on the two side suspension installation positions, the rear end of the motor is installed on the rear suspension assembly, and a three-point arrangement mode is formed. The front auxiliary frame of a pure electric vehicle model and the front auxiliary frame of a hybrid vehicle model can be shared, the platform utilization rate of the vehicle models is improved, and the development cost and period of the whole vehicle are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a platform-type front auxiliary frame for suspending a power system. Background Art

[0002] Pure electric vehicles and hybrid vehicles have gradually gained favor from major automobile OEMs and consumers in recent years due to their many advantages such as low vehicle cost, good control and comfort, and low pollution. The accompanying competition in terms of vehicle cost, weight, performance, etc. has become increasingly severe, which has made automobile OEMs put forward higher requirements for the versatility and platformization of various key components. The front subframe and powertrain suspension of automobiles are both important automobile parts, which have a significant impact on the weight, cost and performance of the whole vehicle. However, due to the differences in volume, weight, layout, etc. between the powertrains of pure electric vehicles and hybrid vehicles, most of the front subframes of automobiles in the existing technology are designed separately for the powertrains of specific models, resulting in the inability to share the front subframes of pure electric vehicles and hybrid vehicles, further limiting the versatility and platformization of the front subframes, and increasing the development cost and cycle of the whole vehicle. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a platform-based front subframe for suspending a power system, so as to solve the problem that the front subframes of pure electric vehicles and hybrid vehicles have narrow commonality and cannot be promoted on a platform basis.

[0004] The platform-type front subframe for suspending the power system provided by the utility model adopts the following technical solutions:

[0005] A platform-based front subframe for suspending a power system comprises a front subframe body and a subframe front crossbeam arranged on the front subframe body, wherein a rear suspension assembly for installing a motor or an engine is arranged near the middle of the front subframe body, and side suspension mounting positions for installing a pure electric vehicle motor are arranged near both ends of the subframe front crossbeam.

[0006] By adopting the above technical solution, when the front subframe body is used for a hybrid vehicle, the rear suspension assembly cooperates with the two left and right suspension brackets on the longitudinal beam, so that the engine of the hybrid vehicle is arranged in a three-point pendulum manner; when the front subframe body is used for a pure electric vehicle, the two sides of the motor are installed on the two side suspension mounting positions, and the rear end is installed on the rear suspension assembly, in a three-point arrangement; the front subframe of the pure electric vehicle and the hybrid vehicle can be shared, which improves the platform utilization rate of the vehicle model and reduces the development cost and cycle of the whole vehicle.

[0007] Furthermore, the front sub-frame body is provided with an escape groove for escaping the exhaust pipe.

[0008] By adopting the above technical solution, the avoidance groove can avoid the exhaust pipe and prevent the front subframe body from avoiding the exhaust pipe, so that the front subframe body of the pure electric vehicle and the hybrid vehicle can be shared, which improves the platform utilization rate of the vehicle model and reduces the development cost and cycle of the whole vehicle.

[0009] Furthermore, the rear suspension assembly includes a rear suspension body side bracket fixed to the front sub-frame body and a rear suspension mounting side bracket mounted on the rear suspension body side bracket for mounting a motor or an engine.

[0010] By adopting the above technical scheme, the rear suspension mounting side bracket and the rear suspension body side bracket are both made of one-piece die-cast aluminum alloy. The rear suspension body side bracket is designed according to the subframe space and can meet the existing installation space of the subframe. The rear suspension mounting side bracket is arranged in an arc shape, and the opening direction is the same as the direction of the avoidance groove. The opening position of the rear suspension mounting side bracket and the space of the avoidance groove are utilized, so that the front subframe body frame of the pure electric vehicle and the hybrid vehicle can be shared, which improves the platform utilization rate of the vehicle model and reduces the development cost and cycle of the whole vehicle.

[0011] Furthermore, the rear suspension body side bracket is provided with a first mounting beam and a second mounting beam for fixing on the front sub-frame body, the first mounting beam is inserted into the front sub-frame body and fixedly connected to the front sub-frame body, and the second mounting beam is located on the surface of the front sub-frame body and fixedly connected to the front sub-frame body.

[0012] By adopting the above technical solution, the first mounting beam and the second mounting beam are installed in a cross shape inside and on the surface of the front subframe body. At the same time, one mounting point is provided on the first mounting beam, and two mounting points are provided on the second mounting beam, which can meet the Z-direction torsion resistance requirements of the rear suspension of the motor or engine. The bolt mounting points of the three mounting points are all reinforced with bosses to improve the dynamic stiffness at the suspension mounting points, thereby ensuring the overall vibration isolation and limiting capability of the suspension system and making the installation more stable.

[0013] Furthermore, the second mounting beam is arranged in the avoidance groove.

[0014] By adopting the above technical solution, interference between the second mounting beam and other parts of the subframe during installation is avoided, and the installation is more convenient.

[0015] Furthermore, a plurality of mounting points for mounting the motor are arranged on the side of the rear suspension mounting side bracket, a rear suspension rubber bushing is arranged on the rear suspension mounting side bracket, and the rear suspension rubber bushing is fixedly connected to the rear suspension vehicle body side bracket.

[0016] By adopting the above technical solution, the three mounting points are arranged in a triangle, so that the motor installation is more stable, and the rear suspension rubber bushing can play a role in vibration reduction and buffering.

[0017] Furthermore, a side suspension assembly is arranged on the side suspension installation position, and the side suspension assembly includes a side front suspension bushing arranged in the front cross beam of the sub-frame and a side front suspension motor bracket arranged on the side front suspension bushing for installing the motor.

[0018] By adopting the above technical solution, when the front subframe body matches the hybrid vehicle model, the side suspension components are not installed on the front cross beam of the subframe, which can improve the lightweight level of the subframe and save costs. When the front subframe body matches the pure electric vehicle model, the side suspension components are pressed onto the front cross beam of the subframe, so that the front subframe of the pure electric vehicle model and the hybrid vehicle model can be shared, which improves the vehicle platform utilization rate and reduces the vehicle development cost and cycle.

[0019] Furthermore, the side suspension mounting positions are two mounting holes arranged on the front cross beam of the sub-frame, the side front suspension bushing is located in the mounting holes, and the two mounting holes are arranged close to the center of mass of the motor assembly.

[0020] By adopting the above technical solution, the motor suspension of pure electric vehicles adopts a three-point center of mass layout, which meets the requirements of the motor suspension center of mass layout, makes the installation more stable, and the side front suspension bushing can play a role in vibration reduction and buffering.

[0021] Furthermore, a long strip-shaped lightweight hole is provided on the front cross beam of the sub-frame, and the lightweight hole is located between the two mounting holes.

[0022] By adopting the above technical solution, the lightweight hole can reduce the overall weight of the front cross beam of the subframe, thereby improving the lightweight level of the subframe and saving costs.

[0023] Furthermore, the cross-sectional area of ​​the front cross beam of the sub-frame gradually increases from both ends toward the mounting hole.

[0024] By adopting the above technical solution, the overall strength of the variable-section front cross beam of the subframe is higher, and at the same time, the side mounting position of the motor is located at the location where the cross-sectional area of ​​the front cross beam of the subframe is the largest, so the overall installation strength is greater and the installation is more stable.

[0025] In summary, the utility model includes at least one of the following beneficial effects: when the front subframe body is used for a hybrid vehicle, the rear suspension assembly cooperates with the two left and right suspension brackets on the longitudinal beam, so that the engine of the hybrid vehicle is arranged in a three-point pendulum manner; when the front subframe body is used for a pure electric vehicle, the two sides of the motor are installed on the two side suspension mounting positions, and the rear end is installed on the rear suspension assembly, in a three-point arrangement; the front subframe of the pure electric vehicle and the hybrid vehicle can be shared, which improves the platform utilization rate of the vehicle model and reduces the development cost and cycle of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1This is a schematic diagram of the structure of a front subframe matching a pure electric vehicle according to an embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of a hybrid vehicle model matched with a front subframe according to an embodiment of the utility model;

[0028] Figure 3 This is a schematic structural diagram of the front subframe of an embodiment of the utility model;

[0029] Figure 4 It is a structural schematic diagram of the rear suspension assembly according to an embodiment of the utility model.

[0030] Description of reference numerals:

[0031] 1. Front subframe body; 11. Avoidance groove; 2. Subframe front crossbeam; 21. Mounting hole; 22. Lightweight hole; 3. Rear suspension assembly; 31. Rear suspension body side bracket; 311. First mounting beam; 312. Second mounting beam; 32. Rear suspension mounting side bracket; 321. Mounting point; 33. Rear suspension rubber bushing; 4. Side suspension assembly; 41. Side front suspension bushing; 42. Side front suspension motor bracket. DETAILED DESCRIPTION

[0032] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0033] The following is combined with Figure 1-4 The utility model is described in further detail.

[0034] The utility model embodiment discloses a platform-type front subframe for suspending a power system. Figure 1-Figure 4The platform-based front subframe for suspending the power system includes a front subframe body 1 and a subframe front cross beam 2 arranged on the front subframe body 1, a rear suspension component 3 for installing a motor or an engine is arranged near the middle of the front subframe body 1, and side suspension mounting positions for installing a pure electric vehicle motor are arranged near both ends of the subframe front cross beam 2; when the front subframe body 1 is used for a hybrid vehicle, the rear suspension component 3 cooperates with the two left and right suspension brackets on the longitudinal beam, so that the engine of the hybrid vehicle is arranged in a three-point pendulum manner; when the front subframe body 1 is used for a pure electric vehicle, the two sides of the motor are installed on the two side suspension mounting positions, and the rear end is installed on the rear suspension component 3, in a three-point arrangement; the front subframes of the pure electric vehicle and the hybrid vehicle can be shared, which improves the platform utilization rate of the vehicle model and reduces the cost and cycle of vehicle development.

[0035] In this embodiment, the front sub-frame body 1 is provided with an avoidance groove 11 for avoiding the exhaust pipe. The avoidance groove 11 can avoid the exhaust pipe to prevent the front sub-frame body 1 from interfering with the exhaust pipe, so that the front sub-frame body 1 of the pure electric vehicle and the hybrid vehicle can be shared, thereby improving the vehicle platform utilization rate and reducing the vehicle development cost and cycle.

[0036] In this embodiment, the rear suspension assembly 3 includes a rear suspension body side bracket 31 fixed on the front sub-frame body 1 and a rear suspension mounting side bracket 32 ​​mounted on the rear suspension body side bracket 31 for mounting a motor. The rear suspension mounting side bracket 32 ​​and the rear suspension body side bracket 31 are both made of one-piece aluminum alloy die-casting. The rear suspension body side bracket 31 is designed according to the sub-frame space and can meet the existing installation space of the sub-frame. The rear suspension mounting side bracket 32 ​​is arranged in an arc shape, and the opening direction is the same as the direction of the avoidance groove 11. The opening position of the rear suspension mounting side bracket 32 ​​and the space of the avoidance groove 11 are utilized, so that the front sub-frame body 1 of the pure electric vehicle and the hybrid vehicle can be shared, thereby improving the platform utilization rate of the vehicle model and reducing the development cost and cycle of the whole vehicle.

[0037] In this embodiment, the rear suspension body side bracket 31 is provided with a first mounting beam 311 and a second mounting beam 312 for fixing on the front sub-frame body 1, the first mounting beam 311 and the second mounting beam 312 are parallel to each other, the first mounting beam 311 is inserted into the front sub-frame body 1 and is fixedly connected to the front sub-frame body 1 by bolts, the second mounting beam 312 is located on the surface of the front sub-frame body 1 and is fixedly connected to the front sub-frame body 1 by bolts, so that the first mounting beam 311 and the second mounting beam 312 are installed inside and on the surface of the front sub-frame body 1, and at the same time, one mounting point is provided on the first mounting beam 311, and two mounting points are provided on the second mounting beam 312, which can meet the Z-direction torsion resistance requirement of the rear suspension of the motor or engine, and the bolt mounting places of the three mounting points are all reinforced with bosses to improve the dynamic stiffness at the suspension mounting points, thereby ensuring the overall vibration isolation and limiting capability of the suspension system and making the installation more stable.

[0038] In this embodiment, the second mounting beam 312 is disposed in the avoidance groove 11 to prevent the second mounting beam 312 from interfering with other parts during the installation of the sub-frame.

[0039] In this embodiment, a plurality of mounting points 321 for mounting the motor are arranged on the side of the rear suspension mounting side bracket 32, and there are three mounting points 321. A rear suspension rubber bushing 33 is arranged on the rear suspension mounting side bracket 32, and the rear suspension rubber bushing 33 is fixedly connected to the rear suspension body side bracket 31. The three mounting points 321 are arranged in a triangle, so that the engine or motor is installed more stably, and the rear suspension rubber bushing 33 can play a role of vibration reduction and buffering.

[0040] In this embodiment, a side suspension component 4 is arranged on the side suspension mounting position, and the side suspension component 4 includes a side front suspension bushing 41 arranged in the front cross beam 2 of the subframe and a side front suspension motor bracket 42 arranged on the side front suspension bushing 41 for installing the motor. When the front subframe body 1 matches the hybrid vehicle model, the side suspension component 4 is not installed on the front cross beam 2 of the subframe, which can improve the lightweight level of the subframe and save costs. When the front subframe body 1 matches the pure electric vehicle model, the side suspension component 4 is pressed onto the front cross beam 2 of the subframe, so that the front subframe of the pure electric vehicle model and the hybrid vehicle model can be shared, which improves the vehicle platform utilization rate and reduces the vehicle development cost and cycle.

[0041] In this embodiment, the side suspension mounting position is two mounting holes 21 set on the front cross beam 2 of the subframe, and the side front suspension bushing 41 is located in the mounting hole 21. The two mounting holes 21 are arranged close to the center of mass of the motor assembly, so that the pure electric vehicle motor suspension adopts a three-point center of mass arrangement, which meets the requirements of the motor suspension center of mass arrangement, and the installation is more stable. The side front suspension bushing 41 can play a role in vibration reduction and buffering.

[0042] In this embodiment, a long strip-shaped lightweight hole 22 is provided on the front cross beam 2 of the subframe, and the lightweight hole 22 is located between the two mounting holes 21. The lightweight hole 22 can reduce the overall weight of the front cross beam 2 of the subframe, thereby improving the lightweight level of the subframe and saving costs.

[0043] In this embodiment, the cross-sectional area of ​​the sub-frame front cross beam 2 gradually increases from both ends to the mounting hole 21, and the sub-frame front cross beam 2 with a variable cross-section setting has a higher overall strength. At the same time, the side mounting position of the motor is located at the location where the cross-sectional area of ​​the sub-frame front cross beam 2 is the largest, so the overall mounting strength is greater and the installation is more stable.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A platform-based front subframe for suspending a power system, characterized in that: The vehicle comprises a front sub-frame body (1) and a sub-frame front cross beam (2) arranged on the front sub-frame body (1); a rear suspension assembly (3) for installing a motor or an engine is arranged near the middle of the front sub-frame body (1); and side suspension installation positions for installing a pure electric vehicle motor are arranged near the two ends of the sub-frame front cross beam (2).

2. The platform-based front subframe for suspending a power system according to claim 1, characterized in that: The front sub-frame body (1) is provided with an escape groove (11) for escaping the exhaust pipe.

3. The platform-based front subframe for suspending a power system according to claim 2, characterized in that: The rear suspension assembly (3) comprises a rear suspension body side bracket (31) fixed on the front sub-frame body (1) and a rear suspension mounting side bracket (32) mounted on the rear suspension body side bracket (31) for mounting a motor or an engine.

4. The platform-based front subframe for suspending a power system according to claim 3, characterized in that: The rear suspension vehicle body side bracket (31) is provided with a first mounting beam (311) and a second mounting beam (312) for fixing to the front sub-frame body (1); the first mounting beam (311) is inserted into the front sub-frame body (1) and is fixedly connected to the front sub-frame body (1); the second mounting beam (312) is located on the surface of the front sub-frame body (1) and is fixedly connected to the front sub-frame body (1).

5. The platform-based front subframe for suspending a power system according to claim 4, characterized in that: The second mounting beam (312) is arranged in the avoidance groove (11).

6. The platform-based front subframe for suspending a power system according to claim 3, characterized in that: A plurality of mounting points (321) for mounting a motor are arranged on the side of the rear suspension mounting side bracket (32), a rear suspension rubber bushing (33) is arranged on the rear suspension mounting side bracket (32), and the rear suspension rubber bushing (33) is fixedly connected to the rear suspension vehicle body side bracket (31).

7. The platform-based front subframe for suspending a power system according to claim 1, characterized in that: A side suspension assembly (4) is arranged on the side suspension installation position, and the side suspension assembly (4) comprises a side front suspension bushing (41) arranged in the front cross beam (2) of the sub-frame and a side front suspension motor bracket (42) arranged on the side front suspension bushing (41) and used for mounting a motor.

8. The platform-based front subframe for suspending a power system according to claim 7, characterized in that: The side suspension mounting positions are two mounting holes (21) arranged on the front cross beam (2) of the sub-frame, the side front suspension bushing (41) is located in the mounting holes (21), and the two mounting holes (21) are arranged close to the center of mass of the motor assembly.

9. The platform-based front subframe for suspending a power system according to claim 8, characterized in that: The front cross beam (2) of the auxiliary frame is provided with a long strip-shaped lightweight hole (22), and the lightweight hole (22) is located between the two mounting holes (21).

10. The platform-based front subframe for suspending a power system according to claim 8, characterized in that: The cross-sectional area of ​​the auxiliary frame front cross beam (2) gradually increases from both ends toward the mounting hole (21).

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