Three-dimensional vibration reduction drive motor suspension assembly

Abstract

The utility model discloses a three-dimensional vibration reduction drive motor suspension assembly, and aims to provide a three-dimensional vibration reduction drive motor suspension assembly which is simple in structure, suitable for mounting and fixing a drive motor, capable of enhancing the suppression of horizontal vibration of the drive motor and optimizing the stress structure of the suspension assembly, and better in overall vibration reduction effect. The suspension device comprises an upper support assembly and a lower support module, the upper support assembly comprises an upper support and an upper suspension cushion, the lower support module comprises a lower support and a lower suspension cushion, the lower suspension cushion is arranged between the upper support and the lower support, the upper suspension cushion is arranged at the upper end of the upper support, and the lower suspension cushion is arranged at the lower end of the lower support. The upper support and the lower support are connected through a screw and a nut, the side connecting end of the upper support is connected with the connecting end of a driving motor, and the side connecting end of the lower support is connected with an external frame through a connecting plate. The suspension assembly is applied to the technical field of suspension assemblies.

Description

Technical Field

[0001] The utility model is applied to the technical field of suspension assemblies, and particularly relates to a three-dimensional vibration-reducing drive motor suspension assembly. Background Art

[0002] The drive motor layout for most domestic pure electric buses still uses a central direct drive configuration, where the drive motor is mounted on the vehicle frame via a suspension structure, which is then connected to the drive shaft and drive axle to form the pure electric bus powertrain assembly. When the drive motor outputs power, the suspension structure must withstand the reverse torque of the drive motor's torque output. Furthermore, due to an objective imbalance in the drive motor's structure and the control current output by its controller, the drive motor will also generate vibration during operation, especially radial vibration. To provide the drive motor with sufficient torque support, reduce vibration, and minimize resonance between the drive motor and the vehicle frame or surrounding structures, engineers design a dedicated suspension assembly for the drive motor. The industry generally adopts the practice of adding vertically positioned vibration-damping pads between the drive motor and the vehicle frame, as exemplified by the utility model patents "CN 220973893 U - A Drive Motor Mounting Assembly and Vehicle," the invention patent "CN107856517 A - Electric Vehicle Drive Motor Mounting Device," and the utility model "CN 205736874 U - A Pure Electric Vehicle Drive Motor Mounting Device." These vertically positioned vibration-damping pads primarily provide vertical support and vibration damping, but are ineffective in mitigating the horizontal vibrations generated by the drive motor. Furthermore, because the center of the drive motor's rotating shaft and the supporting load points of the suspension structures on either side of these designs are not aligned, the drive motor's torque output generates a tangential force on the suspension pads, which can easily cause the pads beneath them to tear and fail. A simple, well-designed, three-dimensional drive motor mount assembly suitable for drive motor mounting, which effectively suppresses the drive motor's horizontal vibrations, optimizes the load-bearing structure of the mount assembly, and offers improved overall vibration damping, could address these issues. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a three-dimensional vibration reduction drive motor suspension assembly with a simple structure, suitable for installation and fixation of the drive motor, enhanced suppression of horizontal vibration of the drive motor, optimized the force structure of the suspension assembly, and better overall vibration reduction effect.

[0004] The technical solution adopted by the present invention is: the present invention includes an upper bracket assembly and a lower bracket module, the upper bracket assembly includes an upper bracket and an upper suspension cushion, the lower bracket module includes a lower bracket and a lower suspension cushion, the lower suspension cushion is arranged between the upper bracket and the lower bracket, the upper suspension cushion is arranged at the upper end of the upper bracket, the upper bracket and the lower bracket are connected by a screw and a nut, the upper bracket side connecting end is connected to the drive motor connecting end, and the lower bracket side connecting end is connected to the external frame through a connecting plate.

[0005] Furthermore, the upper bracket support end and the lower bracket support end are respectively provided with a connecting hole and a waist hole, and the screw rod is matched with the waist hole through the connecting hole.

[0006] Furthermore, the upper suspension cushion includes a vertical vibration damping rubber, a horizontal vibration damping sleeve and a steel sleeve. The vertical vibration damping rubber and the horizontal vibration damping sleeve are connected through the steel sleeve. The horizontal vibration damping sleeve is limitedly matched with the connecting hole, and the steel sleeve is respectively matched with the screw and the lower suspension cushion.

[0007] Furthermore, a suspension cushion cover is provided between the screw and the upper suspension cushion, and a plurality of soft cover limiting claws are provided at the lower end of the suspension cushion cover, and the plurality of soft cover limiting claws cooperate with the upper suspension cushion.

[0008] Furthermore, a suspended cushion seat is provided between the upper bracket and the lower suspended cushion, a plurality of cushion seat limiting claws are provided at the lower end of the suspended cushion seat, and the plurality of cushion seat limiting claws cooperate with the lower suspended cushion, and a soft seat mounting platform is provided at the upper end of the suspended cushion seat, and the soft seat mounting platform cooperates with the connecting hole in a limiting manner.

[0009] Furthermore, an eccentric washer is provided between the supporting end of the lower bracket and the nut, and the eccentric washer cooperates with the nut.

[0010] Furthermore, a cylindrical limiting pin is provided on the inner side of the supporting end of the lower bracket, and the cylindrical limiting pin cooperates with the eccentric gasket.

[0011] Furthermore, a steel sleeve connecting hole is provided in the middle of the lower suspension cushion, and the steel sleeve connecting hole is limitedly matched with the steel sleeve.

[0012] Furthermore, a plurality of motor mounting holes are provided on the mounting end of the upper bracket, and the upper bracket is connected to the driving motor connection position through the plurality of motor mounting holes.

[0013] Furthermore, a plurality of equipment mounting holes are provided on the mounting end of the lower bracket side, and the driving motor is connected to the connecting plate through the plurality of equipment mounting holes.

[0014] The beneficial effects of this utility model are as follows: the suspension cushion cover is installed at the top of the suspension assembly. A circular hole in the center of the cover is designed to receive the screw. Below this hole, multiple retaining claws are designed to horizontally hold the upper suspension cushion, reducing the horizontal vibration of the drive motor in both forward and backward directions. Clearance is provided between the retaining claws to allow for lateral elastic deformation of the upper suspension cushion under vertical pressure, ensuring its vertical vibration damping capability. A steel sleeve is designed to extend vertically through the center of the upper suspension cushion. The through-hole within the steel sleeve is used to receive the screw, which is then installed below the suspension cushion cover, i.e., above the upper bracket assembly. The lower portion of the steel sleeve is connected to the steel sleeve connection hole of the lower suspension cushion. The upper layer contains the upper suspension cushion's vertical vibration damping rubber, while the lower layer contains the upper suspension cushion's horizontal vibration damping sleeve. In the installed state, the upper suspension pad vertical vibration damping rubber is located on the upper suspension pad mounting plate of the motor upper bracket, and the upper suspension pad horizontal vibration damping sleeve is installed in the upper suspension pad mounting hole of the suspension pad mounting seat, which has a better vibration damping effect. At the same time, the upper bracket and the lower bracket can be rotated and can be installed on a variety of different frames. The structure is simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional view of the utility model;

[0016] Figure 2 This is a schematic diagram of the installation of the utility model;

[0017] Figure 3 It is an exploded view of the utility model;

[0018] Figure 4 It is a cross-sectional view of the utility model;

[0019] Figure 5 is a three-dimensional view of the upper bracket;

[0020] Figure 6 is a three-dimensional view of the lower bracket;

[0021] Figure 7 is a three-dimensional view of the upper suspended cushion;

[0022] Figure 8 is a three-dimensional view of the lower suspended cushion;

[0023] Figure 9 is a three-dimensional view of the eccentric spacer;

[0024] Figure 10 is a three-dimensional view of the suspended cushion seat;

[0025] Figure 11is a perspective view of the suspended cushion cover. DETAILED DESCRIPTION

[0026] like Figures 1 to 11 As shown, in this embodiment, the utility model includes an upper bracket assembly 1 and a lower bracket module 2, wherein the upper bracket assembly 1 includes an upper bracket 3 and an upper suspension cushion 4, and the lower bracket module 2 includes a lower bracket 5 and a lower suspension cushion 6, wherein the lower suspension cushion 6 is arranged between the upper bracket 3 and the lower bracket 5, and the upper suspension cushion 4 is arranged at the upper end of the upper bracket 3. The upper bracket 3 and the lower bracket 5 are connected by a screw 7 and a nut 8, and the side connection end of the upper bracket 3 is connected to the connection end of the drive motor 9, and the side connection end of the lower bracket 5 is connected to the external frame through a connecting plate 10. It can be seen that the present application adds a lateral rigid limiting structure for the suspension cushion screw to avoid the lateral relative displacement of the upper and lower bracket assemblies. The suspension assembly structure is optimized to eliminate the tangential force generated on the suspension cushion when the drive motor outputs torque. Without replacing the traditional suspension cushion, a horizontal support structure is designed for the suspension cushion to increase and enhance the vibration reduction performance of the suspension assembly.

[0027] like Figures 3 to 6 As shown, in this embodiment, the supporting ends of the upper bracket 3 and the lower bracket 5 are respectively provided with a connecting hole 11 and a waist hole 12, and the screw 7 is matched with the waist hole 12 through the connecting hole 11. It can be seen that the connecting hole 11 and the waist hole 12 are used for the relative positioning and fixed connection between the upper bracket 3 and the lower bracket 5.

[0028] like Figure 3 and Figure 7 As shown, in this embodiment, the upper suspension cushion 4 includes a vertical vibration damping rubber 41, a horizontal vibration damping sleeve 42, and a steel sleeve 43. The vertical vibration damping rubber 41 and the horizontal vibration damping sleeve 42 are connected by the steel sleeve 43. The horizontal vibration damping sleeve 42 is limitedly engaged with the connecting hole 11, and the steel sleeve 43 is respectively engaged with the screw 7 and the lower suspension cushion 6. It can be seen that the lower part of the steel sleeve 43 is used to connect to the steel sleeve connecting hole 20 of the lower suspension cushion 6. Its main body is divided into two layers, the upper layer is the vertical vibration damping rubber, and the lower layer is the horizontal vibration damping sleeve. In the installed state, the upper suspension cushion vertical vibration damping rubber is located on the upper suspension cushion mounting plate of the upper bracket of the motor, and the upper suspension cushion horizontal vibration damping sleeve is installed in the upper suspension cushion mounting hole of the suspension cushion mounting seat.

[0029] like Figure 3 and Figure 11As shown, in this embodiment, a suspension cushion cover 13 is provided between the screw rod 7 and the upper suspension cushion 4. A plurality of cover-limiting claws 14 are provided at the lower end of the suspension cushion cover 13. These cover-limiting claws 14 engage with the upper suspension cushion 4. As can be seen, the suspension cushion cover 13 is mounted at the top of the suspension assembly. The central circular hole for the cover is designed to receive the screw rod 7. Below the hole are a plurality of cover-limiting claws 14, which are designed to horizontally hold the upper suspension cushion 4 and reduce vibrations in the horizontal plane, such as forward, backward, left, and right directions, when the drive motor 9 is operating.

[0030] like Figure 3 and Figure 10 As shown, in this embodiment, a suspension cushion seat 15 is provided between the upper bracket 3 and the lower suspension cushion 6. A plurality of cushion seat limiting claws 16 are provided at the lower end of the suspension cushion seat 15. These cushion seat limiting claws 16 cooperate with the lower suspension cushion 6. A cushion seat mounting platform 17 is provided at the upper end of the suspension cushion seat 15. The cushion seat mounting platform 17 cooperates with the connection hole 11 for limiting position. It can be seen that the cushion seat mounting platform 17 is designed in the middle of the suspension cushion seat 15 for mounting the horizontal vibration damping sleeve 42 of the upper suspension cushion 4. Multiple cushion seat limiting claws 16 are designed downward to hold the lower suspension cushion 6 in the horizontal direction, reducing vibration in the horizontal plane, front, back, left, and right directions, when the drive motor 6 is operating.

[0031] like Figure 3 、 Figure 4 as well as Figure 9 As shown, in this embodiment, an eccentric washer 18 is provided between the supporting end of the lower bracket 5 and the nut 8, and the eccentric washer 18 cooperates with the nut 8. It can be seen that the eccentric washer 18 prevents the edge of the nut 8 from overpressing the lower bracket 5 and causing deformation.

[0032] like Figure 3 and Figure 4 As shown, in this embodiment, a cylindrical limiting pin 19 is provided on the inner side of the supporting end of the lower bracket 5, and the cylindrical limiting pin 19 cooperates with the eccentric gasket 18. It can be seen that the motor lower bracket assembly is mainly welded by the motor lower bracket and a cylindrical limiting pin. The lower bracket 5 is designed with a small circular hole for welding the cylindrical limiting pin 19, and the cylindrical limiting pin 19 is welded protruding downward. An eccentric hole is designed in the middle of the eccentric gasket 18. After installing the drive motor and adjusting the left and right positions of the suspension assembly, the eccentric gasket 18 is rotated with the eccentric hole as the axis until its outer edge hits the cylindrical limiting pin 19, and then the screw 7 and the nut 8 are tightened. This structure can rigidly limit the relative displacement of the screw and the motor lower bracket assembly at the waist hole of the motor lower bracket assembly, thereby enhancing the lateral vibration reduction performance of the suspension assembly.

[0033] like Figure 3 and Figure 8 As shown, in this embodiment, a steel sleeve connection hole 20 is provided in the middle of the lower suspension cushion 6, and the steel sleeve connection hole 20 is limitedly matched with the steel sleeve 43. It can be seen that the steel sleeve connection hole 20 is connected to the steel sleeve 43, making the whole more stable.

[0034] like Figure 3 and Figure 5 As shown, in this embodiment, the upper bracket 3 is provided with a plurality of motor mounting holes 21 at the side mounting end thereof, and the upper bracket 3 is connected to the connection position of the drive motor 9 through the plurality of motor mounting holes 21. Thus, it can be seen that the plurality of motor mounting holes 21 are connected to the motor mounting position, so that the force during the motor suspension process is more uniform and vibration deviation is prevented.

[0035] like Figure 3 and Figure 6 As shown, in this embodiment, the mounting end of the lower bracket 5 is provided with a plurality of device mounting holes 22, and the drive motor 9 is connected to the connecting plate 10 through the plurality of device mounting holes 22. Thus, it can be seen that the connection between the plurality of device mounting holes 22 and the connecting plate 10 makes the overall force of the motor more uniform.

[0036] The working principle of the present invention is as follows: before installing the vibration damping suspension, the lower bracket 5 on multiple groups of vibration damping suspensions are fixedly connected to several mounting points on the external frame mounting position. According to the height and position of the connection point of the drive motor 9, the direction of the upper bracket 3 is adjusted, the drive motor 9 is lifted, and the upper bracket 3 is connected to the mounting point on the drive motor 9. After the adjustment is completed, the screw 7 and the nut 8 are tightened, and the cylindrical limit pin 19 and the edge of the eccentric gasket 18 are matched to achieve a fixed connection. When the vehicle is running, the upper suspension cushion 4 and the lower suspension cushion 6 cooperate with the suspension cushion cover 13 and the suspension cushion seat 15 to achieve buffering and vibration reduction of the drive motor 9 in the vertical and horizontal directions, thereby realizing multi-directional three-dimensional vibration reduction of the drive motor.

[0037] Although the embodiments of the present invention are described with practical solutions, they do not limit the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.

Claims

1. A three-dimensional vibration-damping drive motor suspension assembly, comprising an upper bracket component (1) and a lower bracket module (2), characterized in that: The upper bracket assembly (1) includes an upper bracket (3) and an upper suspension cushion (4), the lower bracket module (2) includes a lower bracket (5) and a lower suspension cushion (6), the lower suspension cushion (6) is arranged between the upper bracket (3) and the lower bracket (5), the upper suspension cushion (4) is arranged at the upper end of the upper bracket (3), the upper bracket (3) and the lower bracket (5) are connected by a screw (7) and a nut (8), the side connection end of the upper bracket (3) is connected to the connection end of the drive motor (9), and the side connection end of the lower bracket (5) is connected to the external frame through a connecting plate (10).

2. The three-dimensional vibration-damping drive motor suspension assembly according to claim 1, characterized in that: The upper bracket (3) supporting end and the lower bracket (5) supporting end are respectively provided with a connecting hole (11) and a waist hole (12), and the screw rod (7) is matched with the waist hole (12) through the connecting hole (11).

3. The three-dimensional vibration-damping drive motor suspension assembly according to claim 2, characterized in that: The upper suspension cushion (4) includes a vertical vibration damping rubber (41), a horizontal vibration damping sleeve (42) and a steel sleeve (43). The vertical vibration damping rubber (41) and the horizontal vibration damping sleeve (42) are connected via the steel sleeve (43). The horizontal vibration damping sleeve (42) is positionally engaged with the connecting hole (11). The steel sleeve (43) is respectively engaged with the screw (7) and the lower suspension cushion (6).

4. The three-dimensional vibration-damping drive motor suspension assembly according to claim 1, characterized in that: A suspension cushion cover (13) is provided between the screw rod (7) and the upper suspension cushion (4), and a plurality of soft cover limiting claws (14) are provided at the lower end of the suspension cushion cover (13), and the plurality of soft cover limiting claws (14) cooperate with the upper suspension cushion (4).

5. The three-dimensional vibration-damping drive motor suspension assembly according to claim 2, characterized in that: A suspension cushion seat (15) is provided between the upper bracket (3) and the lower suspension cushion (6), a plurality of cushion seat limiting claws (16) are provided at the lower end of the suspension cushion seat (15), and the plurality of cushion seat limiting claws (16) cooperate with the lower suspension cushion (6), a soft seat mounting platform (17) is provided at the upper end of the suspension cushion seat (15), and the soft seat mounting platform (17) cooperates with the connecting hole (11) in a limiting manner.

6. The three-dimensional vibration-damping drive motor suspension assembly according to claim 1, characterized in that: An eccentric washer (18) is provided between the supporting end of the lower bracket (5) and the nut (8), and the eccentric washer (18) cooperates with the nut (8).

7. The three-dimensional vibration-damping drive motor suspension assembly according to claim 6, characterized in that: A cylindrical limiting pin (19) is provided on the inner side of the supporting end of the lower bracket (5), and the cylindrical limiting pin (19) cooperates with the eccentric gasket (18).

8. The three-dimensional vibration-damping drive motor suspension assembly according to claim 3, characterized in that: A steel sleeve connection hole (20) is provided in the middle of the lower suspension cushion (6), and the steel sleeve connection hole (20) is limitedly matched with the steel sleeve (43).

9. The three-dimensional vibration-damping drive motor suspension assembly according to claim 1, characterized in that: A plurality of motor mounting holes (21) are provided at the side mounting end of the upper bracket (3), and the upper bracket (3) is connected to the connecting position of the drive motor (9) via the plurality of motor mounting holes (21).

10. The three-dimensional vibration-damping drive motor suspension assembly according to claim 1, characterized in that: A plurality of equipment mounting holes (22) are provided on the side mounting end of the lower bracket (5), and the drive motor (9) is connected to the connecting plate (10) through the plurality of equipment mounting holes (22).

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