A drive motor left bracket and suspension system

Abstract

The present application relates to a drive motor left bracket and suspension system, belonging to the technical field of electric vehicle suspension systems, including a support plate, which includes a stepped structure formed by interconnecting a flat plate and a vertical plate, the stepped structure including a first step and a second step, the first step being higher than the second step, the flat plate of the first step being provided with a first assembly hole, and the vertical plate of the first step being provided with a positioning hole; a support plate, one end of which is fixedly connected to the lower surface of the flat plate of the second step, and the other end protruding horizontally from the vertical plate of the first step and provided with a second assembly hole, the opening direction of the second assembly hole being the same as the opening direction of the positioning hole. The drive motor left bracket of the present application utilizes the positioning holes on the vertical plate of the first step to install bolts for positioning, which facilitates alignment of the assembly holes and nut holes, reduces assembly difficulty, and improves assembly processability. The support plate can decompose the support reaction force borne by the bracket and improve the working reliability of the bracket.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicle suspension systems, and in particular to a drive motor left bracket and a suspension system. Background Art

[0002] The suspension system of an electric vehicle has the functions of isolating vibration, supporting and positioning the drive motor, protecting the drive motor, and overcoming the reaction force generated by the motor torque output; this requires that the components of the suspension system must have sufficient stiffness, strength, modality and reliability.

[0003] At present, new energy pure electric vehicles and traditional fuel vehicles still coexist. When a fuel vehicle is redesigned into an electric vehicle, the body structure needs to consider the connection structure of the fuel engine suspension system; when the body structure is more complex, it is more difficult to redesign the left bracket of the drive motor of the pure electric vehicle's drive motor system.

[0004] In particular, when the left bracket of the drive motor has many mounting holes and these mounting holes are not on the same surface, the holes will be offset, causing assembly difficulties; the manufacturing precision requirements of the parts and their counterparts are high, which increases the cost. Summary of the Invention

[0005] In response to the deficiencies or one of the deficiencies raised in the above-mentioned background technology, an embodiment of the present application provides a left bracket and suspension system for a drive motor. In the engineering practice of converting oil to electricity, while adapting to the technical characteristics of the suspension system of an electric vehicle, the structure of the left bracket of the drive motor is cleverly designed, which can improve the assembly processability, and the structural strength meets the design requirements, thereby reducing manufacturing costs.

[0006] In a first aspect, an embodiment of the present application provides a left bracket of a drive motor, comprising:

[0007] A support plate comprising a stepped structure formed by interconnecting a flat plate and a vertical plate, the stepped structure comprising a first step and a second step, the first step being higher than the second step, a first assembly hole being provided on the flat plate of the first step, and a positioning hole being provided on the vertical plate of the first step;

[0008] A support plate, one end of which is fixedly connected to the lower surface of the flat plate of the second step, and the other end protrudes horizontally from the vertical plate of the first step and is provided with a second assembly hole, the opening direction of the second assembly hole is the same as the opening direction of the positioning hole.

[0009] In the first aspect, in some embodiments, the first step includes a first flat plate and a first vertical plate fixedly connected to each other, the first assembly hole includes a first bolt hole and a second bolt hole provided on the first flat plate, and the positioning hole includes a first positioning hole and a second positioning hole provided on the first vertical plate.

[0010] In the first aspect, in some embodiments, the second positioning hole is an oblong hole, and an extension line of a straight line connecting the centers of two semicircles of the oblong hole passes through the center of the first positioning hole, and the extension line is parallel to the first flat plate.

[0011] In the first aspect, in some embodiments, the second step includes a second flat plate fixedly connected to the first vertical plate, and a second vertical plate fixedly connected to the second flat plate; the support plate includes a bottom plate fixedly connected to the lower surface of the second flat plate, and a side plate fixedly connected to the bottom plate.

[0012] In the first aspect, in some embodiments, the second assembly hole includes a third bolt hole and a fourth bolt hole provided on the side panel, and the second vertical plate is provided with a first process hole and a second process hole facing the third bolt hole and the fourth bolt hole respectively.

[0013] In the first aspect, in some embodiments, a box-shaped reinforcement rib is fixedly connected between the first vertical plate and the second flat plate to form a closed structure together with the first vertical plate and the second flat plate. The box-shaped reinforcement rib is located between the first positioning hole and the second positioning hole, and a weight-reducing hole connected to the box-shaped reinforcement rib is provided on the second flat plate.

[0014] In the first aspect, in some embodiments, the box-shaped reinforcement rib includes a first reinforcement plate and a second reinforcement plate, the first reinforcement plate is L-shaped, the second reinforcement plate is triangular-shaped, and the first reinforcement plate and the second reinforcement plate are fixedly connected to each other to form a box structure with openings on both sides.

[0015] In the first aspect, in some embodiments, the end of the second vertical plate away from the second flat plate is fixedly connected to the third flat plate, and two third reinforcing plates are fixedly connected between the second vertical plate and the third flat plate;

[0016] The third flat plate is provided with a first mounting hole and a second mounting hole located between the two third reinforcing plates, and a weight reduction groove located between the first mounting hole and the second mounting hole.

[0017] In the first aspect, in some embodiments, a fourth reinforcing plate and a fifth reinforcing plate are fixedly connected between the second flat plate and the second vertical plate, and the fifth reinforcing plate is located between the third bolt hole and the fourth bolt hole and fixedly connected to the lower surface of the base plate.

[0018] In a second aspect, an embodiment of the present application provides a suspension system, comprising:

[0019] A vehicle frame, the vehicle frame comprising a left longitudinal beam assembly and a right longitudinal beam assembly spaced apart from each other, and a subframe assembly fixedly connected between the left longitudinal beam assembly and the right longitudinal beam assembly;

[0020] a motor assembly, the motor assembly being located on the front side of the subframe assembly and between the left longitudinal beam assembly and the right longitudinal beam assembly;

[0021] a suspension unit, the suspension unit comprising a left bracket of the drive motor described in any one of the above items connected to the left longitudinal beam assembly, and a right bracket of the drive motor connected to the right longitudinal beam assembly;

[0022] A left elastic bracket assembly connected to the left bracket of the drive motor, and a right elastic bracket assembly connected to the right bracket of the drive motor;

[0023] A left bracket connected between the left elastic bracket assembly and the motor assembly, and a right bracket connected between the right elastic bracket assembly and the motor assembly;

[0024] A rear suspension bracket connected to the subframe assembly, and a rear suspension assembly connected between the rear suspension bracket and the motor assembly.

[0025] The beneficial effects of the technical solution provided by this application include:

[0026] An embodiment of the present application provides a left bracket and suspension system for a driving motor, wherein the support plate includes a stepped structure formed by interconnecting a flat plate and a vertical plate, the stepped structure includes a first step and a second step, the first step is higher than the second step, a first assembly hole is provided on the flat plate of the first step, and a positioning hole is provided on the vertical plate of the first step; one end of the support plate is fixedly connected to the lower surface of the flat plate of the second step, and the other end protrudes from the vertical plate of the first step in a horizontal direction and is provided with a second assembly hole, and the opening direction of the second assembly hole is the same as the opening direction of the positioning hole.

[0027] Therefore, after the vertical plate of the first step contacts the side wall of the left longitudinal beam assembly of the vehicle body, bolts are installed through the positioning holes thereon to position the bracket. The bolts are tightened and simultaneously function as positioning pins. That is, the principle of surface-plus-pin positioning technology can be used to position the bracket on the left longitudinal beam assembly, avoiding the problem of misalignment between the first and second assembly holes on the bracket and the nut holes on the left longitudinal beam assembly, thereby reducing assembly difficulty and improving assembly processability. At the same time, the support plate, the flat plate and the vertical plate of the first step form a laterally open groove structure, which is fixed to the left longitudinal beam assembly in an interlocking manner, effectively reducing the support reaction force borne by the bracket and improving its operating reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 This is a schematic structural diagram of the left bracket of the drive motor according to an embodiment of the present application;

[0030] Figure 2 This is a schematic structural diagram of the left bracket of the driving motor from another perspective of an embodiment of the present application;

[0031] Figure 3 This is a schematic structural diagram of a support plate according to an embodiment of the present application;

[0032] Figure 4 This is a front view schematic diagram of a support plate according to an embodiment of the present application;

[0033] Figure 5 This is a schematic structural diagram of a box-shaped reinforcement rib according to an embodiment of the present application;

[0034] Figure 6 This is a schematic structural diagram of a support plate according to an embodiment of the present application;

[0035] Figure 7 Schematic diagram of the structure of the suspension system according to an embodiment of the present application.

[0036] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0037] 1. Motor assembly; 2. Drive motor left bracket; 3. Left elastic bracket assembly; 4. Left bracket; 5. Drive motor right bracket; 6. Right elastic bracket assembly; 7. Right bracket; 8. Rear suspension assembly; 9. Rear suspension bracket; 10. Left longitudinal beam assembly; 11. Right longitudinal beam assembly; 12. Subframe assembly;

[0038] 21. Support plate; 22. Support plate; 23. First reinforcing plate; 24. Second reinforcing plate; 25. Third reinforcing plate; 26. Fourth reinforcing plate; 27. Fifth reinforcing plate; 211. Third flat plate; 212. Second flat plate; 213. First flat plate; 214. Second vertical plate; 215. First vertical plate; 221. Bottom plate; 222. Side plate;

[0039] 2111, first mounting hole; 2112, second mounting hole; 2113, weight-reducing groove; 2131, first bolt hole; 2132, second bolt hole; 2141, first process hole; 2142, second process hole; 2151, first positioning hole; 2152, second positioning hole; 2153, weight-reducing hole; 2221, third bolt hole; 2222, fourth bolt hole. DETAILED DESCRIPTION

[0040] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] In response to the deficiencies or one of the deficiencies raised in the above-mentioned background technology, an embodiment of the present application provides a left bracket and suspension system for a drive motor. In the engineering practice of converting oil to electricity, while adapting to the technical characteristics of the suspension system of an electric vehicle, the structure of the left bracket of the drive motor is cleverly designed, which can improve the assembly processability, and the structural strength meets the design requirements, thereby reducing manufacturing costs.

[0042] See also Figures 1 to 6 As shown, the first aspect of the embodiment of the present application provides a left bracket of a driving motor, comprising:

[0043] The support plate 21 includes a stepped structure formed by interconnecting a flat plate and a vertical plate, the stepped structure including a first step and a second step, the first step being higher than the second step, a first assembly hole being provided on the flat plate of the first step, and a positioning hole being provided on the vertical plate of the first step;

[0044] The support plate 22 has one end fixedly connected to the lower surface of the flat plate of the second step, and the other end protrudes horizontally from the vertical plate of the first step and is provided with a second assembly hole, the opening direction of the second assembly hole is the same as the opening direction of the positioning hole.

[0045] The left bracket 2 of the driving motor of the embodiment of the present application includes a support plate 21 and a support plate 22. The support plate 21 is a plate with a stepped structure, having a first step and a second step, the first step is higher than the second step, a first assembly hole is provided on the flat plate of the first step, and a positioning hole is provided on the vertical plate of the first step; the support plate 22 is fixedly connected to the lower surface of the flat plate of the second step, and protrudes from the vertical plate of the first step in the horizontal direction, and a second assembly hole is provided at the protruding end, the opening direction of which is the same as the opening direction of the positioning hole.

[0046] During installation, the left bracket 2 of the drive motor is brought into contact with the side wall of the left longitudinal beam assembly 10 of the vehicle body by using the vertical plate of the first step, and then the bolts are installed through the positioning holes thereon to position them. The bolts act as positioning pins while being tightened, that is, the positioning technology principle of surface plus pins is adopted to position the left bracket 2 of the drive motor on the left longitudinal beam assembly 10, avoiding the problem of hole deviation between the first assembly hole and the second assembly hole on the left bracket 2 of the drive motor and the nut hole on the left longitudinal beam assembly 10, thereby reducing the difficulty of assembly and improving the assembly processability.

[0047] At the same time, support plate 22 protrudes horizontally from the vertical plate of the first step. When the flat plate and vertical plate of the first step are respectively attached to the top surface and side wall of the left longitudinal beam assembly 10, the protruding end of support plate 22 can be attached to the surface of the reinforcing rib on the side wall. The support plate 22, together with the flat plate and vertical plate of the first step, forms a laterally open slot structure. Engagingly fixed to the left longitudinal beam assembly 10, it effectively reduces the support reaction force on the left drive motor bracket 2, improving its operational reliability.

[0048] For example, the support plate 21 and the support plate 22 of this embodiment are both stamped integrally from steel plates of appropriate strength. The support plate 21 has a stepped structure, and the support plate 22 has an L shape. The support plate 22 is fixedly connected to the support plate 21 by welding, and a groove structure with a side opening is formed between the support plate 21 and the support plate 22. When the left bracket 2 of the driving motor is connected between the left longitudinal beam assembly 10 and the left elastic bracket assembly 3 for use, most of the force exerted by the left elastic bracket assembly 3 on the support plate 21 can be decomposed and transmitted to the support plate 22 and act on the reinforcing ribs on the side wall of the left longitudinal beam assembly 10.

[0049] That is, the support plate 22 can effectively strengthen the connection between the first step and the second step on the support plate 21, decomposing the force exerted there and transferring it to the support plate 22 to act on the reinforcing rib on the side wall of the left longitudinal beam assembly 10, thereby preventing the connection between the first step and the second step from being excessively stressed and causing fracture, thereby improving the structural strength of the left drive motor bracket 2 and ensuring the operational reliability of the left drive motor bracket 2. Thus, in the engineering practice of converting from oil to electric vehicles, while adapting to the technical characteristics of the electric vehicle suspension system, the design of the left drive motor bracket 2 can be improved to improve the bracket assembly processability, ensure that the structural strength meets the design requirements, and reduce manufacturing costs.

[0050] In some optional embodiments, see Figures 1 to 6 As shown, an embodiment of the present application provides a left bracket of a driving motor, wherein the first step of the left bracket 2 of the driving motor includes a first flat plate 213 and a first vertical plate 215 fixedly connected to each other, the first assembly hole includes a first bolt hole 2131 and a second bolt hole 2132 provided on the first flat plate 213, and the positioning hole includes a first positioning hole 2151 and a second positioning hole 2152 provided on the first vertical plate 215.

[0051] The first step in this embodiment of the present application comprises an integrally stamped first flat plate 213 and first upright plate 215. When installed, the first flat plate 213 and first upright plate 215 respectively mate with the top surface and side wall of the left longitudinal beam of the vehicle body. To ensure positioning and connection reliability, the first flat plate 213 is provided with a first bolt hole 2131 and a second bolt hole 2132, and the first upright plate 215 is provided with a first positioning hole 2151 and a second positioning hole 2152.

[0052] During installation, the first positioning holes 2151 and second positioning holes 2152 on the first vertical plate 215 correspond to two bolts for connecting to the left longitudinal beam of the vehicle body. The bolts not only tighten the vehicle body but also serve as positioning pins, achieving two-pin positioning on one side. After ensuring that the first vertical plate 215 is in contact with the side wall of the left longitudinal beam of the vehicle body and aligning the bolts, the first bolt holes 2131 and second bolt holes 2132 on the first flat plate 213 align with the nut holes on the top surface of the left longitudinal beam of the vehicle body, facilitating the assembly of the bolts and fastening the first flat plate 213 to the left longitudinal beam of the vehicle body.

[0053] It should be noted that the second assembly hole on the support plate 22 includes a third bolt hole 2221 and a fourth bolt hole 2222. When the first vertical plate 215 is attached to the side wall of the left longitudinal beam of the vehicle body and the bolts are installed to position it, the first bolt hole 2131 and the second bolt hole 2132 on the first flat plate 213 can be aligned with the nut holes on the top surface of the left longitudinal beam of the vehicle body. At the same time, the third bolt hole 2221 and the fourth bolt hole 2222 on the support plate 22 can also be aligned with the nut holes on the wall surface of the reinforcing concave rib of the left longitudinal beam of the vehicle body.

[0054] In some optional embodiments, see Figures 1 to 6 As shown, an embodiment of the present application provides a left bracket of a driving motor, in which the second positioning hole 2152 of the left bracket 2 of the driving motor is an oblong hole, and the extension line of the straight line connecting the centers of the two semicircles of the oblong hole passes through the center of the first positioning hole 2151, and the extension line is parallel to the first flat plate 213.

[0055] The second positioning hole 2152 of the embodiment of the present application is an oblong hole, and the extension line of the straight line connecting the centers of the two semicircles of the oblong hole passes through the center of the first positioning hole 2151. At the same time, the extension line is parallel to the first flat plate 213, so that the position of the first vertical plate 215 can be fine-tuned by sliding along the side wall of the left longitudinal beam of the vehicle body during positioning to ensure that the bolt hole on the first flat plate 213 can be aligned with the nut hole on the top surface of the left longitudinal beam.

[0056] For example, in this embodiment, the first positioning hole 2151 is a circular hole, the hole diameter is 1mm larger than the bolt diameter; the second positioning hole 2152 is an oblong hole, the hole radius is 0.5mm larger than the bolt radius, and the adjustment amount (the distance between the centers of the two semicircles) is set to 3mm; Figure 4 As shown, the center of the first positioning hole 2151 and the centers of the two semicircles of the second positioning hole 2152 are located on the same straight line.

[0057] The positioning adopts the principle of one-side two-pin positioning technology. The first positioning hole 2151, the first vertical plate 215 and the contact surface of the left longitudinal beam of the vehicle body form a hole and a surface, which can limit the movement of the left bracket 2 of the driving motor in the Y direction of the vehicle and limit the rotation around the X direction and movement in the X direction, while limiting the movement and rotation around the Z direction.

[0058] The second positioning hole 2152 can limit the rotation of the left bracket 2 of the driving motor around the Y direction of the vehicle; in this way, the six degrees of freedom of the left bracket 2 of the driving motor in space are all restricted, thereby completing the positioning of the left bracket 2 of the driving motor. Figure 3 The X-axis direction is the length (front and back) direction of the vehicle, the Y-axis direction is the width (left and right) direction of the vehicle, and the Z-axis direction is the height (up and down) direction of the vehicle.

[0059] After installation, the support reaction force borne by the left bracket 2 of the drive motor is relatively large. Only the first positioning hole 2151 and the second positioning hole 2152 will make the left bracket 2 of the drive motor unreliable, and the force borne by the positioning holes is also very large; therefore, the first bolt hole 2131, the second bolt hole 2132, the third bolt hole 2221, and the fourth bolt hole 2222 are set to decompose the support reaction force borne by the left bracket 2 of the drive motor, thereby improving the working reliability of the left bracket 2 of the drive motor.

[0060] As mentioned above, the first bolt hole 2131, the second bolt hole 2132, the third bolt hole 2221, and the fourth bolt hole 2222 are all large round holes, and the hole diameters are 3 mm larger than the bolt diameters, which facilitates the alignment and installation of bolts, avoids the phenomenon that the holes are offset and cannot be installed, reduces the requirements for assembly accuracy, and improves assembly processability.

[0061] In some optional embodiments, see Figures 1 to 6 As shown, an embodiment of the present application provides a left bracket of a driving motor, wherein the second step of the left bracket 2 of the driving motor includes a second flat plate 212 fixedly connected to the first vertical plate 215, and a second vertical plate 214 fixedly connected to the second flat plate 212; the support plate 22 includes a bottom plate 221 fixedly connected to the lower surface of the second flat plate 212, and a side plate 222 fixedly connected to the bottom plate 221.

[0062] The second step and the first step of the embodiment of the present application are formed by integral stamping. The second step includes a second flat plate 212 and a second vertical plate 214 connected to each other. The second flat plate 212 and the first vertical plate 215 are interconnected. The second flat plate 212 extends along the Y direction of the vehicle, ensuring the arrangement spacing of the left elastic bracket assembly 3 and the left longitudinal beam assembly 10.

[0063] The support plate 22 includes an integrally stamped bottom plate 221 and a side plate 222. The bottom plate 221 is convenient for welding to the lower surface of the second flat plate 212, and the side plate 222 is convenient for adhering to the wall surface of the reinforcing rib on the side wall of the left longitudinal beam of the vehicle body. After the side plate 222 is installed with fasteners, it can form a stable side support to decompose the support reaction force borne by the support plate 21 and improve the reliability of the bracket structure.

[0064] In some optional embodiments, see Figures 1 to 6As shown, an embodiment of the present application provides a left bracket of a drive motor, wherein the second assembly hole of the left bracket 2 of the drive motor includes a third bolt hole 2221 and a fourth bolt hole 2222 arranged on the side plate 222, and the second vertical plate 214 is provided with a first process hole 2141 and a second process hole 2142 facing the third bolt hole 2221 and the fourth bolt hole 2222 respectively.

[0065] In the embodiment of the present application, a third bolt hole 2221 and a fourth bolt hole 2222 are formed on the side plate 222, and a first process hole 2141 and a second process hole 2142 are formed on the second vertical plate 214. The first process hole 2141 is coaxial with the third bolt hole 2221 and has a larger hole diameter than the third bolt hole 2221, while the second process hole 2142 is coaxial with the fourth bolt hole 2222 and has a larger hole diameter than the fourth bolt hole 2222. This allows the first process hole 2141 and the second process hole 2142 to serve as through holes for a sleeve tool during bolt installation, facilitating the passage of a sleeve.

[0066] It should be noted that, combined with Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 As shown, the first vertical plate 215, the first flat plate 213, and the side plate 222 are provided with a total of 6 mounting holes, namely the first positioning hole 2151, the second positioning hole 2152, the first bolt hole 2131, the second bolt hole 2132, the third bolt hole 2221, and the fourth bolt hole 2222; the first vertical plate 215, the first flat plate 213, and the side plate 222 are distributed in space and are not on the same plane. If the functions of the holes are not properly set, the mounting hole of the left bracket 2 of the drive motor and the nut hole of the vehicle body will be misaligned, and the assembly accuracy requirement is very high; the technical solution adopted by the present invention is that the functions of these 6 holes are positioning holes (the first positioning hole 2151, the second positioning hole 2152), and clamping holes (the first bolt hole 2131, the second bolt hole 2132, the third bolt hole 2221, and the fourth bolt hole 2222);

[0067] As mentioned above, the first positioning hole 2151 is a circular hole, the hole diameter is 1mm larger than the bolt diameter; the second positioning hole 2152 is a strip hole, the hole radius is 0.5mm larger than the bolt radius, and the adjustment amount is set to 3mm; Figure 4 As shown, the centers of the first positioning hole 2151 and the second positioning hole 2152 are on the center line of the two holes.

[0068] As mentioned above, the positioning adopts the positioning technology principle of 1 surface and 2 pins. The first positioning hole 2151 and the contact surface between the first vertical plate 215 and the vehicle body form 1 hole + 1 surface, which can limit the movement of the left bracket 2 of the driving motor in the Y direction of the whole vehicle and limit the rotation around X and the movement in the X direction, while limiting the movement in the Z direction and the rotation around the Z direction; the second positioning hole 2152 can limit the rotation of the left bracket 2 of the driving motor around the Y direction of the whole vehicle; in this way, the 6 degrees of freedom of the left bracket 2 of the driving motor in space are all restricted, and the positioning is completed.

[0069] However, the support reaction force borne by the left bracket 2 of the drive motor is very large. Only the first positioning hole 2151 and the second positioning hole 2152 will cause the left bracket 2 of the drive motor to work unreliably, and the force borne by the positioning holes is also very large; therefore, it is necessary to set clamping holes (first bolt hole 2131, second bolt hole 2132, third bolt hole 2221, fourth bolt hole 2222) to decompose the support reaction force borne by the left bracket 2 of the drive motor and improve the working reliability of the left bracket 2 of the drive motor.

[0070] As mentioned above, the first bolt hole 2131, the second bolt hole 2132, the third bolt hole 2221, and the fourth bolt hole 2222 are all large round holes, and the hole diameter is 3 mm larger than the bolt diameter, which avoids the hole deviation phenomenon and reduces the assembly accuracy requirement.

[0071] In some optional embodiments, see Figures 1 to 6 As shown, an embodiment of the present application provides a left bracket of a driving motor, wherein a box-shaped reinforcement rib is fixedly connected between the first vertical plate 215 and the second flat plate 212 of the left bracket 2 of the driving motor, and together with the first vertical plate 215 and the second flat plate 212, a closed structure is formed. The box-shaped reinforcement rib is located between the first positioning hole 2151 and the second positioning hole 2152, and a weight-reducing hole 2153 connected to the box-shaped reinforcement rib is provided on the second flat plate 212.

[0072] In the embodiment of the present application, box-shaped reinforcement ribs are welded and fixed between the first vertical plate 215 and the second flat plate 212. The box-shaped reinforcement ribs and the first vertical plate 215 and the second flat plate 212 together form a closed structure, which plays a structural reinforcement role and is conducive to transmitting force to the six hole positions (first positioning hole 2151, second positioning hole 2152, first bolt hole 2131, second bolt hole 2132, third bolt hole 2221, and fourth bolt hole 2222).

[0073] The box-shaped reinforcement rib is located between the first positioning hole 2151 and the second positioning hole 2152, facilitating the even distribution of force around the first and second positioning holes 2151, 2152. The second flat plate 212 is provided with a weight-reducing hole 2153 that communicates with the box-shaped reinforcement rib. This lightweight design reduces the weight of the support plate 21.

[0074] In some optional embodiments, see Figures 1 to 6 As shown, an embodiment of the present application provides a left bracket of a driving motor, and the box-shaped reinforcement ribs of the left bracket 2 of the driving motor include a first reinforcement plate 23 and a second reinforcement plate 24, the first reinforcement plate 23 is L-shaped, and the second reinforcement plate 24 is triangular-shaped, and the first reinforcement plate 23 and the second reinforcement plate 24 are fixedly connected to each other to form a box structure with openings on both sides.

[0075] The box-shaped reinforcement ribs in this embodiment include a first reinforcement plate 23 and a second reinforcement plate 24. The first reinforcement plate 23 is L-shaped and consists of a rectangular plate and a triangular plate connected together. The second reinforcement plate 24 is triangular and welded to the rectangular plate on the first reinforcement plate 23, forming a box-shaped structure with two openings. During installation, the two openings face the first vertical plate 215 and the second flat plate 212, respectively, and are welded to the first vertical plate 215 and the second flat plate 212, thereby forming a closed box-shaped reinforcement structure that effectively strengthens the structure.

[0076] In some optional embodiments, see Figures 1 to 6 As shown, the embodiment of the present application provides a left bracket of a driving motor, wherein the end of the second vertical plate 214 of the left bracket 2 of the driving motor away from the second flat plate 212 is fixedly connected to the third flat plate 211, and two third reinforcing plates 25 are fixedly connected between the second vertical plate 214 and the third flat plate 211;

[0077] The third flat plate 211 is provided with a first mounting hole 2111 and a second mounting hole 2112 located between the two third reinforcing plates 25 , and a weight reduction groove 2113 located between the first mounting hole 2111 and the second mounting hole 2112 .

[0078] The third flat plate 211 and the second vertical plate 214 of the embodiment of the present application are integrally stamped, and two third reinforcing plates 25 are fixedly connected between the second vertical plate 214 and the third flat plate 211. The third flat plate 211 is provided with a first mounting hole 2111 and a second mounting hole 2112, as well as a weight reduction groove 2113 located between the first mounting hole 2111 and the second mounting hole 2112.

[0079] The first mounting hole 2111 and the second mounting hole 2112 facilitate the installation and connection of the left elastic bracket assembly 3. The third reinforcing plate 25 is triangular in shape and welded to the third flat plate 211 and the second vertical plate 214, with the three perpendicular to each other. The two third reinforcing plates 25 are arranged on either side to absorb the force applied by the left elastic bracket assembly 3 and provide structural reinforcement. The weight-reducing slot 2113 between the first mounting hole 2111 and the second mounting hole 2112 is a lightweight design that reduces the weight of the support plate 21.

[0080] In some optional embodiments, see Figures 1 to 6As shown, an embodiment of the present application provides a left bracket of a driving motor, wherein a fourth reinforcing plate 26 and a fifth reinforcing plate 27 are fixedly connected between the second flat plate 212 and the second vertical plate 214 of the left bracket 2 of the driving motor, and the fifth reinforcing plate 27 is located between the third bolt hole 2221 and the fourth bolt hole 2222 and is fixedly connected to the lower surface of the base plate 221.

[0081] A fourth reinforcing plate 26 and a fifth reinforcing plate 27 are welded vertically between the second flat plate 212 and the second vertical plate 214 in this embodiment. Both the fourth and fifth reinforcing plates 26 and 27 are triangular in shape and provide structural reinforcement. In this embodiment, two fourth and fifth reinforcing plates 26 and 27 are provided, and both are welded and secured away from functional holes.

[0082] It should be noted that the left bracket 2 of the driving motor of the present application is made by welding stamped plates, and the support plate 21 is lightweight to reduce costs; the first reinforcing plate 23, the second reinforcing plate 24, the first vertical plate 215 and the second flat plate 212 form a boxed structure, which plays a role in structural reinforcement and modal increase, and is conducive to the transmission of force to the root;

[0083] The fourth and fifth reinforcing plates 26 and 27, together with the second flat plate 212 and second vertical plate 214, form a semi-boxed structure, facilitating force transmission to the base. The third reinforcing plate 25, third flat plate 211, and second vertical plate 214 form a semi-boxed structure, absorbing the force applied by the left elastic bracket assembly 3. This achieves a semi-boxed design for the upper, middle, and lower portions of the left drive motor bracket 2, effectively improving component modal properties and reducing stress.

[0084] See also Figure 7 As shown, the second aspect of the embodiment of the present application provides a suspension system, including:

[0085] The vehicle frame includes a left longitudinal beam assembly 10 and a right longitudinal beam assembly 11 that are spaced apart from each other, and a subframe assembly 12 that is fixedly connected between the left longitudinal beam assembly 10 and the right longitudinal beam assembly 11;

[0086] The motor assembly 1 is located in front of the subframe assembly 12 and between the left longitudinal beam assembly 10 and the right longitudinal beam assembly 11;

[0087] A suspension unit, the suspension unit comprising a left drive motor bracket 2 according to any of the above embodiments connected to the left longitudinal beam assembly 10, and a right drive motor bracket 5 connected to the right longitudinal beam assembly 11;

[0088] A left elastic bracket assembly 3 connected to the left bracket 2 of the driving motor, and a right elastic bracket assembly 6 connected to the right bracket 5 of the driving motor;

[0089] A left bracket 4 connected between the left elastic bracket assembly 3 and the motor assembly 1, and a right bracket 7 connected between the right elastic bracket assembly 6 and the motor assembly 1;

[0090] A rear suspension bracket 9 connected to the subframe assembly 12 , and a rear suspension assembly 8 connected between the rear suspension bracket 9 and the motor assembly 1 .

[0091] The suspension system of the embodiment of the present application consists of a motor assembly 1, a left bracket 2 of the drive motor, a left elastic bracket assembly 3, a left bracket 4, a right bracket 5 of the drive motor, a right elastic bracket assembly 6, a right bracket 7, a rear suspension assembly 8, a rear suspension bracket 9, a left longitudinal beam assembly 10, a right longitudinal beam assembly 11, and a subframe assembly 12.

[0092] The left bracket 2 of the driving motor is installed on the left longitudinal beam assembly 10 by bolts; the left elastic bracket assembly 3 is installed on the left bracket 2 of the driving motor by bolts and nuts; the left bracket 4 is installed on the motor assembly 1 by bolts and is connected to the left elastic bracket assembly 3.

[0093] The right bracket 5 of the driving motor is installed on the right longitudinal beam assembly 11 by bolts; the right elastic bracket assembly 6 is installed on the right bracket 5 of the driving motor by bolts and nuts; the right bracket 7 is installed on the motor assembly 1 by bolts and connected to the right elastic bracket assembly 6; the rear suspension assembly 8 is installed on the motor assembly 1 by bolts and connected to the rear suspension bracket 9.

[0094] The left bracket 4, the right bracket 7, and the rear suspension assembly 8 jointly support the motor assembly 1; the left drive motor bracket 2, the right drive motor bracket 5, and the rear suspension bracket 9 jointly connect the motor assembly 1 to the vehicle body and the subframe; the left elastic bracket assembly 3, the right elastic bracket assembly 6, and the rear suspension assembly 8 play the role of connection, shock absorption, and vibration isolation.

[0095] The rear suspension assembly 8 not only supports the motor assembly 1 but also provides connection, shock absorption, and vibration isolation. It connects the motor assembly 1 to the rear suspension bracket 9, attenuating and isolating vibrations and forces transmitted from the motor assembly 1 to the rear suspension bracket 9.

[0096] Among them, the suspension system adopts the left bracket 2 of the drive motor of any of the above-mentioned embodiments. The left bracket 2 of the drive motor has the advantages of simple structure, ingenious design, stable structure, good reliability, strong bearing capacity, lightweight, low cost, and easy assembly. It can improve the assembly processability, and the structural strength meets the design requirements, reducing the manufacturing cost.

[0097] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0098] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0099] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A left bracket of a driving motor, characterized in that: include: A support plate (21) includes a stepped structure formed by interconnecting a flat plate and a vertical plate, the stepped structure includes a first step and a second step, the first step is higher than the second step, a first assembly hole is provided on the flat plate of the first step, and a positioning hole is provided on the vertical plate of the first step; A support plate (22) has one end fixedly connected to the lower surface of the flat plate of the second step, and the other end protrudes horizontally from the vertical plate of the first step and is provided with a second assembly hole, wherein the opening direction of the second assembly hole is the same as the opening direction of the positioning hole.

2. The left bracket of the driving motor according to claim 1, characterized in that: The first step includes a first flat plate (213) and a first vertical plate (215) fixedly connected to each other, the first assembly hole includes a first bolt hole (2131) and a second bolt hole (2132) provided on the first flat plate (213), and the positioning hole includes a first positioning hole (2151) and a second positioning hole (2152) provided on the first vertical plate (215).

3. The left bracket of the driving motor according to claim 2, characterized in that: The second positioning hole (2152) is an oblong hole, and the extension line of the straight line connecting the centers of the two semicircles of the oblong hole passes through the center of the first positioning hole (2151), and the extension line is parallel to the first flat plate (213).

4. The left bracket of the driving motor according to claim 2, characterized in that: The second step includes a second flat plate (212) fixedly connected to the first vertical plate (215), and a second vertical plate (214) fixedly connected to the second flat plate (212); the support plate (22) includes a bottom plate (221) fixedly connected to the lower surface of the second flat plate (212), and a side plate (222) fixedly connected to the bottom plate (221).

5. The left bracket of the driving motor according to claim 4, characterized in that: The second assembly hole comprises a third bolt hole (2221) and a fourth bolt hole (2222) provided on the side plate (222); the second vertical plate (214) is provided with a first process hole (2141) and a second process hole (2142) facing the third bolt hole (2221) and the fourth bolt hole (2222) respectively.

6. The left bracket of the driving motor according to claim 4, characterized in that: A box-shaped reinforcement rib is fixedly connected between the first vertical plate (215) and the second flat plate (212), and together with the first vertical plate (215) and the second flat plate (212) form a closed structure. The box-shaped reinforcement rib is located between the first positioning hole (2151) and the second positioning hole (2152). A weight-reducing hole (2153) communicating with the box-shaped reinforcement rib is provided on the second flat plate (212).

7. The left bracket of the driving motor according to claim 6, characterized in that: The box-shaped reinforcement rib comprises a first reinforcement plate (23) and a second reinforcement plate (24), wherein the first reinforcement plate (23) is L-shaped and the second reinforcement plate (24) is triangular-shaped, and the first reinforcement plate (23) and the second reinforcement plate (24) are fixedly connected to each other to form a box structure with openings on both sides.

8. The left bracket of the driving motor according to claim 4, characterized in that: One end of the second vertical plate (214) away from the second flat plate (212) is fixedly connected to the third flat plate (211), and two third reinforcing plates (25) are fixedly connected between the second vertical plate (214) and the third flat plate (211); The third flat plate (211) is provided with a first mounting hole (2111) and a second mounting hole (2112) located between the two third reinforcing plates (25), and a weight reduction groove (2113) located between the first mounting hole (2111) and the second mounting hole (2112).

9. The left bracket of the driving motor according to claim 4, characterized in that: A fourth reinforcing plate (26) and a fifth reinforcing plate (27) are fixedly connected between the second flat plate (212) and the second vertical plate (214); the fifth reinforcing plate (27) is located between the third bolt hole (2221) and the fourth bolt hole (2222) and is fixedly connected to the lower surface of the bottom plate (221).

10. A suspension system, characterized in that: include: A vehicle frame, the vehicle frame comprising a left longitudinal beam assembly (10) and a right longitudinal beam assembly (11) spaced apart from each other, and a sub-frame assembly (12) fixedly connected between the left longitudinal beam assembly (10) and the right longitudinal beam assembly (11); A motor assembly (1), the motor assembly (1) being located on the front side of the subframe assembly (12) and between the left longitudinal beam assembly (10) and the right longitudinal beam assembly (11); A suspension unit, the suspension unit comprising a left bracket (2) of a driving motor according to any one of claims 1 to 9 connected to the left longitudinal beam assembly (10), and a right bracket (5) of a driving motor connected to the right longitudinal beam assembly (11); A left elastic bracket assembly (3) connected to the left bracket (2) of the drive motor, and a right elastic bracket assembly (6) connected to the right bracket (5) of the drive motor; A left bracket (4) connected between the left elastic bracket assembly (3) and the motor assembly (1), and a right bracket (7) connected between the right elastic bracket assembly (6) and the motor assembly (1); A rear suspension bracket (9) connected to the subframe assembly (12) and a rear suspension assembly (8) connected between the rear suspension bracket (9) and the motor assembly (1).

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