Motor suspension structure and automobile
By designing a motor suspension structure with height difference on the subframe of the electric vehicle, the motor is flipped under the front circumference beam when the front collision is performed, the energy absorption space in the rear of the electric vehicle cabin is solved. The problem of insufficient improvements in the collision resistance of the entire vehicle.
Patent Information
- Application Number
- CN202421080294.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-16
AI Technical Summary
Due to the pursuit of long range, existing electric vehicles have increased the loading space at the bottom of the car body and the cancellation of the floor longitudinal beam structure, resulting in insufficient energy absorption space in the rear cabin, reducing the car's anti-collision performance.
Design a motor suspension structure, by installing the front and rear suspension on the front and rear beams of the subframe, the installation height of the front suspension is greater than the rear suspension, forming a height difference to make the front collision. The motor flips under the front closure beam to improve collision resistance using idle space.
Without increasing the size of the front circumference beam cavity and nacelle, the space below the front circumference beam is fully utilized to improve the collision resistance of the entire vehicle and ensure that the motor can be effectively flipped to the safe area during collision.
Smart Images
Figure CN222329446U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile suspension, in particular to a motor suspension structure and an automobile. Background Art
[0002] At present, electric vehicles tend to increase battery packs to improve battery capacity in order to pursue long driving range, and large battery packs require larger mounting space under the vehicle body. In the prior art, pure electric vehicles usually cancel the floor longitudinal beam structure and instead increase the size of the front wall cross beam cavity to support the front longitudinal beam, thereby improving the anti-collision strength. Since increasing the front wall cross beam cavity will inevitably occupy a larger cabin space, the front wall cross beam and the motor will overlap in the height direction, which will result in some idle space under the front wall cross beam in the cabin that cannot be used as energy absorption space. This will result in insufficient energy absorption space at the rear of the vehicle cabin, reducing the anti-collision performance of the vehicle. Utility Model Content
[0003] The utility model aims at the technical problem of insufficient rear energy absorption space in a vehicle cabin in the prior art and provides a motor suspension structure and a vehicle.
[0004] In view of the above technical problems, an embodiment of the utility model provides a motor suspension structure, including a front suspension installed on a front cross beam of a subframe, and a rear suspension installed on a rear cross beam of the subframe, wherein both the front suspension and the rear suspension are connected to a motor; a height of a front suspension mounting point of the front suspension installed on the front cross beam is greater than a height of a rear suspension mounting point of the rear suspension installed on the rear cross beam.
[0005] Optionally, the motor suspension structure also includes a first suspension bracket arranged on the front cross beam, and a second suspension bracket arranged on the rear cross beam; the front suspension is installed on the first suspension bracket through a front suspension mounting point; the rear suspension is installed on the second suspension bracket through the rear suspension mounting point.
[0006] Optionally, the front suspension includes a first suspension and a second suspension both connected to the motor; the first suspension bracket includes a first frame and a second frame spaced apart on the front cross beam; the front suspension mounting point includes a first mounting point and a second mounting point; the first suspension is mounted on the first frame via the first mounting point, and the second suspension is mounted on the second frame via the second mounting point.
[0007] Optionally, the height of the front overhang mounting point is greater than the height of the top surface of the front cross beam; the height of the rear overhang mounting point is equal to the height of the top surface of the rear cross beam.
[0008] Optionally, the front suspension is provided with a first connection point group connected to the motor; the rear suspension is provided with a second connection point group connected to the motor; the heights of all connection points in the first connection point group are greater than or equal to the height of the front suspension mounting point; the heights of all connection points in the second connection point group are greater than or equal to the height of the rear suspension mounting point; the height of the highest connection point in the first connection point group is greater than the height of the highest connection point in the second connection point group.
[0009] Optionally, the second connection point group includes a first point, a second point and a third point arranged on the rear suspension; the first point is located on the side of the rear suspension mounting point close to the front suspension; the first connecting line between the first point and the rear suspension mounting point is flush with the top surface of the rear cross beam; the second connecting line between the second point and the third point passes through the rear suspension mounting point; the angle between the first connecting line and the second connecting line is an acute angle.
[0010] Optionally, the first connection point group includes a fourth point, a fifth point, a sixth point and a seventh point arranged on the front suspension; the fourth point and the fifth point are located on the side of the front suspension mounting point close to the rear suspension; the third line between the fourth point and the fifth point passes through the front suspension mounting point; the third line is arranged parallel to the top surface of the front cross beam; the fourth line between the sixth point and the seventh point passes through the front suspension mounting point; the angle between the third line and the fourth line is an acute angle.
[0011] Optionally, the front suspension is made of resin, and the rear suspension is made of alloy.
[0012] Optionally, the front suspension includes annular induction ribs arranged around the front suspension mounting point, and reinforcing ribs arranged alternately with the annular induction ribs.
[0013] The utility model also provides a car, comprising a sub-frame, a motor and the motor suspension structure.
[0014] In the utility model, the motor suspension structure includes a front suspension installed on the front cross beam of the subframe, and a rear suspension installed on the rear cross beam of the subframe, and the front suspension and the rear suspension are both connected to the motor; the height of the front suspension mounting point on the front cross beam is greater than the height of the rear suspension mounting point on the rear cross beam.
[0015] In the present invention, both ends of the motor are respectively mounted on the front crossbeam and the rear crossbeam of the subframe through the front suspension and the rear suspension, and since the height of the front suspension mounting point on the front crossbeam of the front suspension is greater than the height of the rear suspension mounting point on the rear crossbeam of the rear suspension, that is, the front suspension mounting point and the rear suspension mounting point have a height difference in the height direction of the vehicle. In this way, when a head-on collision occurs, the collision force is transmitted to the front suspension and the rear suspension through the subframe, and then transmitted to the motor through the front suspension and the rear suspension, the front suspension and the rear suspension will generate a force on the motor that is higher in the front and lower in the rear, thereby generating a torque on the motor to flip downward from the front suspension to the rear suspension. In this way, in conjunction with the bending of the subframe, the motor has a flipping tendency, and the motor can flip to the space below the front crossbeam when a head-on collision occurs, thereby making the motor staggered from the front crossbeam in the height direction. Without increasing the size of the front crossbeam cavity and the cabin, the space below the front crossbeam is fully utilized, thereby improving the anti-collision performance of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0017] Figure 1 It is a schematic diagram of the overall structure of a motor suspension structure and a motor installed on a sub-frame provided by an embodiment of the utility model;
[0018] Figure 2 yes Figure 1 Schematic diagram of the motor suspension structure and subframe;
[0019] Figure 3 It is a structural schematic diagram of the front suspension of the motor suspension structure provided by one embodiment of the utility model;
[0020] Figure 4 It is a structural schematic diagram of the rear suspension of the motor suspension structure provided by one embodiment of the utility model;
[0021] Figure 5 It is a comparative schematic diagram of the installation positions of the front suspension and the rear suspension of the motor suspension structure provided in one embodiment of the utility model.
[0022] The reference numerals in the specification are as follows:
[0023] 1-front suspension, 110-front suspension mounting point, 1110-first mounting point, 1120-second mounting point, 120-first suspension, 130-second suspension, 140-first connection point group, 1410-fourth point, 1420-fifth point, 1430-sixth point, 1440-seventh point, 150-circumferential induction ribs, 160-reinforcement ribs, 2-rear suspension, 210-rear suspension mounting point, 220-second connection point group, 2210-first point, 2220-second point, 2230-third point, 3-motor, 4-front cross beam, 5-rear cross beam, 6-first suspension bracket, 610-first frame, 620-second frame, 7-second suspension bracket. DETAILED DESCRIPTION
[0024] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0025] It should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", and "middle" are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation of the present invention.
[0026] In the present invention, in order to better illustrate the motor suspension structure and its connection relationship, the "left" referred to in the present invention refers to the left side of the vehicle (i.e. Figure 1 The "right" in the present invention refers to the right side of the vehicle (i.e. Figure 1 The "front" in the present invention refers to the front of the vehicle (i.e. Figure 1 The "rear" in the present invention refers to the rear of the vehicle (i.e. Figure 1 to the right of the motor suspension structure shown in ).
[0027] like Figure 1 to Figure 2 As shown, an embodiment of the utility model provides a motor suspension structure, including a front suspension 1 installed on the front cross beam 4 of a subframe, and a rear suspension 2 installed on the rear cross beam 5 of the subframe, wherein the front suspension 1 and the rear suspension 2 are both connected to a motor 3; a height of a front suspension mounting point 110 at which the front suspension 1 is mounted on the front cross beam 4 is greater than a height of a rear suspension mounting point 210 at which the rear suspension 2 is mounted on the rear cross beam 5.
[0028] The subframe is installed on the chassis of the automobile, the front crossbeam 4 and the rear crossbeam 5 of the subframe are arranged in parallel, the front suspension 1 is installed on the front crossbeam 4, the rear suspension 2 is installed on the rear crossbeam 5, the front end of the motor 3 is connected to the front suspension 1, the rear end of the motor 3 is connected to the rear suspension 2, and the motor 3 is installed between the front crossbeam 4 and the rear crossbeam 5 of the subframe through the front suspension 1 and the rear suspension 2; the height of the front suspension installation point 110 where the front suspension 1 is installed on the front crossbeam 4 is greater than the height of the rear suspension installation point 210 where the rear suspension 2 is installed on the rear crossbeam 5, that is, the front suspension 1 and the rear suspension 2 are arranged in height in terms of the vehicle. There is a height difference upwards, so that the installation height of the front end of the motor 3 is greater than the installation height of the rear end of the motor 3. In the height direction of the vehicle, the motor 3 is installed on the subframe with the front higher and the rear lower. When a head-on collision occurs, the collision force is transmitted to the front suspension 1 and the rear suspension 2 through the subframe. The front suspension 1 and the rear suspension 2 also generate a force on the motor 3 with the front higher and the rear lower, thereby generating a torque for the motor 3 to flip downward from the front suspension 1 to the rear suspension 2, so that the motor 3 has a flipping tendency, and then the motor 3 can flip and sink to the space below the front surround cross beam when a head-on collision occurs.
[0029] In one embodiment, if Figure 5 As shown, the height difference between the front suspension mounting point 110 and the rear suspension mounting point 210 is 70mm-100mm. It is understandable that the installation height of the front suspension mounting point 110 on the front cross beam 4 and the installation height of the rear suspension mounting point 210 on the rear cross beam 5 are set according to the requirements, that is, the height difference between the front suspension mounting point 110 and the rear suspension mounting point 210 can be set according to the size of the vehicle body and the size of the modeling space, as long as the requirement of flipping the motor 3 to the space below the front wall cross beam can be met; it is understandable that under the same force, the greater the height difference, the greater the torque applied to the motor 3, and the stronger the flipping tendency. Further, the height difference between the front suspension mounting point 110 and the rear suspension mounting point 210 can be 70mm, 85mm, 100mm.
[0030] In the present invention, both ends of the motor 3 are respectively mounted on the front cross beam 4 and the rear cross beam 5 of the subframe through the front suspension 1 and the rear suspension 2, and since the height of the front suspension mounting point 110 of the front suspension 1 on the front cross beam 4 is greater than the height of the rear suspension mounting point 210 of the rear suspension 2 on the rear cross beam 5, that is, the front suspension mounting point 110 and the rear suspension mounting point 210 have a height difference in the height direction of the vehicle, so that when a frontal collision occurs, the collision force is transmitted to the front suspension 1 and the rear suspension 2 through the subframe, and the front suspension 1 and the rear suspension 2 are used to transmit the collision force to the front suspension 1 and the rear suspension 2. When transmitted to the motor 3, the front suspension 1 and the rear suspension 2 will generate a force on the motor 3 that is higher in the front and lower in the rear, thereby generating a torque for the motor 3 to flip downward from the front suspension 1 to the rear suspension 2. In this way, with the bending of the subframe, the motor 3 has a flipping tendency. When a head-on collision occurs, the motor 3 can flip to the space below the front crossbeam, thereby making the motor 3 staggered from the front crossbeam in the height direction. Without increasing the size of the front crossbeam cavity and the cabin, the space below the front crossbeam is fully utilized, thereby improving the anti-collision performance of the entire vehicle.
[0031] In one embodiment, if Figure 1 and Figure 2 As shown, the motor suspension structure further includes a first suspension bracket 6 arranged on the front cross beam 4, and a second suspension bracket 7 arranged on the rear cross beam 5; the front suspension 1 is mounted on the first suspension bracket 6 through the front suspension mounting point 110; the rear suspension 2 is mounted on the second suspension bracket 7 through the rear suspension mounting point 210. It can be understood that the front suspension 1 is mounted on the front cross beam 4 through the first suspension bracket 6, and the first point position is set on the first suspension bracket 6, and the first point position is the front suspension mounting point 110 where the front suspension 1 is connected to the first suspension bracket 6 after the front suspension 1 is mounted on the first suspension bracket 6; the rear suspension 2 is mounted on the rear cross beam 5 through the second suspension bracket 7, and the second point position is set on the second suspension bracket 7, and the second point position is the rear suspension mounting point 210 where the rear suspension 2 is connected to the second suspension bracket 7 after the rear suspension 2 is mounted on the second suspension bracket 7. After the first suspension bracket 6 is installed on the front cross beam 4 and the second suspension bracket 7 is installed on the rear cross beam 5, the installation height of the first point (i.e., the front suspension installation point 110) is greater than the installation height of the second point (i.e., the rear suspension installation point 210), so that the installation height of the front suspension 1 on the front cross beam 4 is greater than the installation height of the rear suspension 2 on the rear cross beam 5, thereby ensuring that a turning moment is generated on the motor 3 during a frontal collision. In this embodiment, the first suspension bracket 6 and the second suspension bracket 7 are provided to better install the front suspension 1 and the rear suspension 2 and ensure the height difference between the front suspension installation point 110 and the rear suspension installation point 210. At the same time, the first suspension bracket 6 can increase the connection stability between the front suspension 1 and the front cross beam 4, and the second suspension bracket 7 can increase the connection stability between the rear suspension 2 and the rear cross beam 5.
[0032] In one embodiment, if Figure 1 and Figure 2 As shown, the front suspension 1 includes a first suspension 120 and a second suspension 130 both connected to the motor 3; the first suspension bracket 6 includes a first frame 610 and a second frame 620 arranged at intervals on the front cross beam 4; the front suspension mounting point 110 includes a first mounting point 1110 and a second mounting point 1120; the first suspension 120 is mounted on the first frame 610 through the first mounting point 1110, and the second suspension 130 is mounted on the second frame 620 through the second mounting point 1120. It can be understood that the first suspension 120 is mounted on the front cross beam 4 through the first frame 610, and the second suspension 130 is mounted on the front cross beam 4 through the second frame 620, and the first frame 610 and the second frame 620 are arranged at intervals on the left and right sides of the front cross beam 4, the first frame 610 enhances the connection stability between the first suspension 120 and the front cross beam 4, and the second frame 620 enhances the connection stability between the second suspension 130 and the front cross beam 4. In this way, the left front end of the motor 3 is installed on the left side of the front cross beam 4 through the first suspension 120 and the first frame 610, and the right front end of the motor 3 is installed on the right side of the front cross beam 4 through the second suspension 130 and the second frame 620, so that the installation stability of the motor 3 on the subframe is further enhanced. Furthermore, the first suspension 120 and the second suspension 130 are symmetrically arranged on opposite sides of the rear suspension 2 to further improve the installation stability of the front suspension 1 and the motor 3.
[0033] Furthermore, the first frame 610 and the second frame 620 are both welded to the front cross beam 4 , so that the connection between the first frame 610 and the front cross beam 4 , and between the second frame 620 and the rear cross beam 5 is stable.
[0034] In one embodiment, if Figure 2As shown, the height of the front suspension mounting point 110 is greater than the top surface height of the front cross beam 4; the height of the rear suspension mounting point 210 is equal to the top surface height of the rear cross beam 5. It can be understood that the height of the front cross beam 4 is roughly equal to the height of the rear cross beam 5, and the height of the front suspension mounting point 110 is greater than the top surface height of the front cross beam 4, and the height of the rear suspension mounting point 210 is equal to the top surface height of the rear cross beam 5, so that the height of the front suspension mounting point 110 can always be greater than the height of the rear suspension mounting point 210. In this way, when the motor 3 is connected between the front suspension 1 and the rear suspension 2, it can always maintain a tilted state so that it can be smoothly turned over in the event of a collision. Furthermore, since the height of the rear suspension mounting point 210 is equal to the top surface height of the rear cross beam 5, and the height of the front cross beam 4 is equal to the height of the rear cross beam 5, when the height difference between the front suspension mounting point and the rear suspension mounting point is 70mm-100mm, the height difference between the height of the front suspension mounting point 110 and the top surface of the front cross beam 4 is also 70mm-100mm, so as to meet the vehicle volume and styling space size settings, as well as the turning torque requirements of the motor 3.
[0035] In one embodiment, if Figures 3 to 5 As shown, the front suspension 1 is provided with a first connection point group 140 connected to the motor 3; the rear suspension 2 is provided with a second connection point group 220 connected to the motor 3; the heights of all connection points in the first connection point group 140 are greater than or equal to the height of the front suspension mounting point 110; the heights of all connection points in the second connection point group 220 are greater than or equal to the height of the rear suspension mounting point 210; the height of the highest connection point of the first connection point group 140 is greater than the height of the highest connection point of the second connection point group 220. It can be understood that the first connection point group 140 set on the front suspension 1 is used to install the motor 3 to connect the front end of the motor 3, and the second connection point group 220 set on the rear suspension 2 is used to install the motor 3 to connect the rear end of the motor 3; wherein, the heights of all the connection points in the first connection point group 140 are greater than or equal to the height of the front suspension mounting point 110, and the heights of all the connection points in the second connection point group 220 are greater than or equal to the height of the rear suspension mounting point 210. In this way, when the front suspension mounting point 110 and the rear suspension mounting point 210 serve as the main force transmission points during a collision, the height of the front suspension mounting point 110 can always be kept greater than the height of the rear suspension mounting point 210, and the installation of the motor 3 can also always keep its front end installation height greater than its rear end installation height, thereby ensuring that the torque requirement for the motor 3 to flip is met.
[0036] In one embodiment, if Figure 5As shown, the height difference between the highest connection point of the first connection point group 140 and the highest connection point of the second connection point group 220 is 110mm-140mm. Further, the height difference between the highest connection point of the first connection point group 140 and the highest connection point of the second connection point group 220 can be 110mm, 125mm, 140mm. It is understandable that the height of the highest point of the first connection point group 140 for connecting the motor 3 on the front suspension 1 is greater than the height of the highest point of the second connection point group 220 for connecting the motor 3 on the rear suspension 2. It is understandable that, limited by the structure of the motor 3 and the fastening requirements, it is not necessary to ensure that all connection points of the first connection point group 140 are higher than all connection points of the second connection point group 220, as long as the overall installation height of the first connection point group 140 is greater than the overall installation height of the second connection point group 220. Furthermore, the height difference between the highest connection point of the first connection point group 140 and the highest connection point of the second connection point group 220 can be set according to the vehicle volume, the size of the styling space and the structure of the motor 3 to meet the size requirements of the motor 3 to be installed in the space below the front panel beam, so that the motor 3 can be smoothly flipped into the space below the front panel beam.
[0037] In one embodiment, if Figure 4 and Figure 5 As shown, the second connection point group 220 includes a first point 2210, a second point 2220 and a third point 2230 arranged on the rear suspension 2; the first point 2210 is located on the side of the rear suspension mounting point 210 close to the front suspension 1; the first line between the first point 2210 and the rear suspension mounting point 210 is flush with the top surface of the rear cross beam 5; the second line between the second point 2220 and the third point 2230 passes through the rear suspension mounting point 210; the angle between the first line and the second line is an acute angle. It can be understood that in order to make the connection and installation of the rear suspension 2 and the motor 3 compact, and thus ensure that the installation height of the rear suspension 2 is lower than the installation height of the front suspension 1, the angle between the first line between the first point 2210 on the side close to the front suspension 1 and the rear suspension mounting point 210 and the second line between the second point 2220 and the third point 2230 passing through the rear suspension mounting point 210 is set to an acute angle. Furthermore, the number of connection points in the second connection point group 220 can be set to at least three as required, wherein the second connection point group 220 must include the first point 2210, the second point 2220 and the third point 2230 set on the rear suspension 2, but other connection points of the second connection point group 220 can also be set to be located on the first line or the second line. It is understandable that other connection points of the second connection point group 220 may not be located on the first line or the second line.
[0038] In one embodiment, if Figure 4As shown, the angle between the first connecting line and the second connecting line is 60°-70°. Further, the angle between the first connecting line and the second connecting line can be 60°, 65°, or 70°. It can be understood that the angle between the first connecting line and the second connecting line is set to an angle within the above-mentioned angle range according to the installation position of the motor 3 and the size of the front enclosure cross beam cavity, which can meet the requirement of compact installation of the motor 3.
[0039] In one embodiment, if Figure 3 and Figure 5 As shown, the first connection point group 140 includes a fourth point 1410, a fifth point 1420, a sixth point 1430 and a seventh point 1440 arranged on the front suspension 1; the fourth point 1410 and the fifth point 1420 are located on the side of the front suspension mounting point 110 close to the rear suspension 2; the third line between the fourth point 1410 and the fifth point 1420 passes through the front suspension mounting point 110; the third line is arranged parallel to the top surface of the front cross beam 4; the fourth line between the sixth point 1430 and the seventh point 1440 passes through the front suspension mounting point 110; the angle between the third line and the fourth line is an acute angle. It is understandable that in order to make the connection and installation of the front suspension 1 and the motor 3 compact, and thus ensure that the installation height of the front suspension 1 is greater than the installation height of the rear suspension 2, the angle between the third connecting line between the fourth point 1410 and the fifth point 1420 passing through the front suspension installation point 110 in the first connection point group 140 and the fourth connecting line between the sixth point 1430 and the seventh point 1440 passing through the front suspension installation point 110 is set to an acute angle, which further ensures the overall compactness of the installation of the motor 3, so as to further ensure the stability of the installation of both ends of the motor 3. The number of connection points in the first connection point group 140 can be set to at least four according to requirements. However, the first connection point group 140 must include the fourth point 1410, the fifth point 1420, the sixth point 1430 and the seventh point 1440 set on the front suspension 1, but other connection points of the first connection point group 140 can also be set to be located on the third connection line or the fourth connection line. It is understandable that other connection points of the first connection point group 140 are not located on the third connection line or the fourth connection line.
[0040] In one embodiment, if Figures 1 to 5As shown, the material of the front suspension 1 is resin, and the material of the rear suspension 2 is alloy. It can be understood that, since the height of the front suspension mounting point 110 of the front suspension 1 on the front cross beam 4 is greater than the height of the rear suspension mounting point 210 of the rear suspension 2 on the rear cross beam 5, so that the front suspension 1 and the rear suspension 2 exert a force on the motor 3 that is high in the front and low in the back, at this time, the front suspension 1 is made of resin material, and the rear suspension 2 is made of alloy material. In this way, when subjected to a frontal collision, the frontal impact force exerts a force that is high in the front and low in the back on the motor 3. At this time, since the strength of the front suspension 1 made of resin is less than the strength of the rear suspension 2 made of alloy material, the front suspension 1 made of resin material will break quickly, releasing the constraint on the movement posture of the motor 3, so that the motor 3 accelerates to flip and sink; the rear suspension 2 made of alloy material can ensure that the rear suspension 2 does not fail or break. After the collision occurs and the front suspension 1 breaks, the motor 3 can be strongly supported to ensure that the motor 3 flips downward with the support position as the rotation center. In this way, when the motor 3 is accelerating to flip and sink, it can perfectly avoid the front wall cross beam in the height direction of the vehicle, making full use of the energy absorption space below the front wall cross beam and improving the anti-collision performance of the whole vehicle.
[0041] In one embodiment, if Figure 3 As shown, the front suspension 1 includes an annular induction rib 150 arranged around the front suspension mounting point 110, and a reinforcing rib 160 arranged staggered with the annular induction rib 150. It can be understood that the annular induction rib 150 and the reinforcing rib 160 arranged staggered with the annular induction rib 150 are arranged at the front suspension mounting point 110 of the front suspension 1; when the front collision of the vehicle occurs and the collision force is transmitted to the front suspension 1, the reinforcing rib 160 decomposes the force of the front suspension 1, and at the same time, the annular induction rib 150 can induce the force of the front suspension 1 to decompose along the annular induction rib 150, so that the front suspension mounting point 110 and the first connection point group 140 on the front suspension 1 are twisted, and then the front suspension 1 is quickly broken in the annular direction to accelerate the flipping and sinking of the motor 3.
[0042] Furthermore, the first suspension 120 and the second suspension 130 in the front suspension 1 can both adopt the arrangement of the annular induction ribs 150 and the reinforcing ribs 160. Understandably, taking the test of a car equipped with the above motor suspension structure under a standard frontal collision condition of 56 km / h in an embodiment of the utility model as an example, 36 ms after the frontal collision occurs, the first suspension 120 and the second suspension 130 respectively installed on the left and right sides of the front cross beam 4 begin to break at the position of the annular induction ribs 150, releasing the restraint of the subframe on the motor 3, and the motor accelerates to flip.
[0043] The utility model also provides a car, comprising a subframe, a motor 3 and the motor suspension structure, wherein the motor 3 is mounted on the subframe through the motor suspension structure. The car in the utility model can be an electric car.
[0044] In the automobile in the above embodiment of the utility model, the two ends of the motor 3 are respectively mounted on the front cross beam 4 and the rear cross beam 5 of the subframe through the front suspension 1 and the rear suspension 2 of the motor 3 suspension mechanism, and since the height of the front suspension mounting point 110 of the front suspension 1 on the front cross beam 4 is greater than the height of the rear suspension mounting point 210 of the rear suspension 2 on the rear cross beam 5, that is, the front suspension mounting point 110 and the rear suspension mounting point 210 have a height difference in the height direction of the vehicle, so that when a frontal collision occurs, the collision force is transmitted to the front suspension 1 and the rear suspension 2 through the subframe, and is transmitted to the front suspension 1 and the rear suspension 2 through the front suspension 1 and the rear suspension 2. When the suspension 1 and the rear suspension 2 are transmitted to the motor 3, the front suspension 1 and the rear suspension 2 will generate a force on the motor 3 that is higher in the front and lower in the rear, thereby generating a torque on the motor 3 to flip downward from the front suspension 1 to the rear suspension 2. In this way, with the bending of the subframe, the motor 3 has a flipping tendency. When a head-on collision occurs, the motor 3 can flip to the space below the front cross beam, thereby making the motor 3 staggered from the front cross beam in the height direction. Without increasing the size of the front cross beam cavity and the cabin, the space below the front cross beam is fully utilized, thereby improving the anti-collision performance of the entire vehicle.
[0045] The above are only embodiments of the motor suspension structure and automobile of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A motor suspension structure, characterized in that: It includes a front suspension installed on the front cross beam of the subframe, and a rear suspension installed on the rear cross beam of the subframe, and both the front suspension and the rear suspension are connected to the motor; the height of the front suspension installation point on the front cross beam is greater than the height of the rear suspension installation point on the rear cross beam.
2. The motor suspension structure according to claim 1, characterized in that: The motor suspension structure further includes a first suspension bracket arranged on the front crossbeam, and a second suspension bracket arranged on the rear crossbeam; The front suspension is installed on the first suspension bracket through the front suspension mounting point; the rear suspension is installed on the second suspension bracket through the rear suspension mounting point.
3. The motor suspension structure according to claim 2, characterized in that: The front suspension includes a first suspension and a second suspension both connected to the motor; the first suspension bracket includes a first frame body and a second frame body spaced apart and arranged on the front cross beam; the front suspension mounting point includes a first mounting point and a second mounting point; The first suspension is installed on the first frame through the first installation point, and the second suspension is installed on the second frame through the second installation point.
4. The motor suspension structure according to claim 1, characterized in that: The height of the front overhang installation point is greater than the top surface height of the front cross beam; the height of the rear overhang installation point is equal to the top surface height of the rear cross beam.
5. The motor suspension structure according to claim 1, characterized in that: The front suspension is provided with a first connection point group connected to the motor; the rear suspension is provided with a second connection point group connected to the motor; the height of all connection points in the first connection point group is greater than or equal to the height of the front suspension mounting point; the height of all connection points in the second connection point group is greater than or equal to the height of the rear suspension mounting point; The height of the highest connection point of the first connection point group is greater than the height of the highest connection point of the second connection point group.
6. The motor suspension structure according to claim 5, characterized in that: The second connection point group includes a first point, a second point and a third point arranged on the rear suspension; the first point is located on a side of the rear suspension mounting point close to the front suspension; a first connecting line between the first point and the rear suspension mounting point is flush with the top surface of the rear cross beam; a second connecting line between the second point and the third point passes through the rear suspension mounting point; The angle between the first connecting line and the second connecting line is an acute angle.
7. The motor suspension structure according to claim 5, characterized in that: The first connection point group includes a fourth point, a fifth point, a sixth point and a seventh point arranged on the front suspension; the fourth point and the fifth point are located on a side of the front suspension mounting point close to the rear suspension; a third connecting line between the fourth point and the fifth point passes through the front suspension mounting point; the third connecting line is arranged parallel to the top surface of the front cross beam; The fourth connecting line between the sixth point and the seventh point passes through the front suspension installation point; the angle between the third connecting line and the fourth connecting line is an acute angle.
8. The motor suspension structure according to claim 1, characterized in that: The material of the front suspension is resin, and the material of the rear suspension is alloy.
9. The motor suspension structure according to claim 1, characterized in that: The front suspension includes annular induction ribs arranged around the front suspension mounting point, and reinforcing ribs arranged alternately with the annular induction ribs.
10. An automobile, characterized in that: The vehicle comprises a subframe, a motor and a motor suspension structure as claimed in any one of claims 1 to 9.