Driving motor left bracket and suspension system

Abstract

The invention relates to a driving motor left bracket and a suspension system, and belongs to the technical field of electric automobile suspension systems, the driving motor left bracket comprises a supporting plate, the supporting plate comprises a step-shaped structure formed by connecting a flat plate and a vertical plate, the step-shaped structure comprises a first step and a second step, and the first step is higher than the second step; a first assembly hole is formed in a flat plate of the first step, and a positioning hole is formed in a vertical plate of the first step; one end of the supporting plate is fixedly connected to the lower surface of the flat plate of the second step, the other end of the supporting plate protrudes out of the vertical plate of the first step in the horizontal direction and is provided with a second assembly hole, and the opening direction of the second assembly hole is the same as that of the positioning hole. According to the left bracket of the driving motor, bolts are installed through the positioning holes in the vertical plate of the first step for positioning, the assembling holes and the nut holes can be aligned conveniently, the assembling difficulty is lowered, and the assembling manufacturability is improved. The supporting plate can decompose the bearing reaction borne by the bracket, and the working reliability of the bracket is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicle suspension systems, and in particular to a left bracket of a drive motor 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, mode 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; high manufacturing accuracy requirements are imposed on the parts and their counterparts, thereby increasing costs. Summary of the invention

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

[0006] In a first aspect, an embodiment of the present application provides a left bracket of a driving 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 of which 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.

[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 arranged on the first flat plate, and the positioning hole includes a first positioning hole and a second positioning hole arranged 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 arranged on the side plate, 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, including:

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

[0020] A motor assembly, the motor assembly being located at 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 as 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 bracket 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 surface of the left longitudinal beam assembly of the vehicle body, bolts are installed through the positioning holes thereon to position them. The bolts are tightened and play the role of positioning pins at the same time, that is, the positioning technology principle of surface plus pins can be used to position the bracket on the left longitudinal beam assembly, avoiding the problem of the first assembly hole and the second assembly hole on the bracket and the nut hole on the left longitudinal beam assembly being misaligned, thereby reducing the difficulty of assembly and improving the assembly process. At the same time, the support plate forms a groove structure with a side opening with the flat plate and the vertical plate of the first step, and is fixed on the left longitudinal beam assembly in an occlusal manner, which can effectively decompose the support reaction force borne by the bracket and improve the working reliability of the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 creative work.

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

[0030] Figure 2 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 diagram of the structure of a support plate according to an embodiment of the present application;

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

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

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

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

[0036] In the accompanying drawings, the components represented by the reference numerals are listed 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 reduction 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 reduction hole; 2221, third bolt hole; 2222, fourth bolt hole. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

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

[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 connecting 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;

[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, thereby 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, the support plate 22 protrudes from the vertical plate of the first step in the horizontal direction. When the flat plate and vertical plate of the first step are respectively fitted and fixed to the top surface and side wall of the left longitudinal beam assembly 10, the protruding end of the support plate 22 can be fitted and fixed to the surface of the reinforcing rib on the side wall. The support plate 22 forms a groove structure with a side opening with the flat plate and vertical plate of the first step, and is fixed on the left longitudinal beam assembly 10, which can effectively 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.

[0048] Exemplarily, the support plate 21 and the support plate 22 of the present embodiment are both integrally stamped from steel plates of suitable strength, the support plate 21 is in a stepped structure, the support plate 22 is in 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 drive 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, decompose the force borne therein and transfer it to the support plate 22 to act on the reinforcing concave rib on the side wall of the left longitudinal beam assembly 10, avoid excessive stress and fracture at the connection between the first step and the second step, improve the structural strength of the left bracket 2 of the drive motor, and ensure the working reliability of the left bracket 2 of the drive motor. In this way, in the engineering practice of oil-to-electric conversion, while adapting to the technical characteristics of the suspension system of electric vehicles, the design of the left bracket 2 of the drive motor is improved, the bracket assembly processability is improved, the structural strength is guaranteed to meet the design requirements, and the manufacturing cost is reduced.

[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 arranged on the first flat plate 213, and the positioning hole includes a first positioning hole 2151 and a second positioning hole 2152 arranged on the first vertical plate 215.

[0051] The first step of the embodiment of the present application includes a first flat plate 213 and a first vertical plate 215 that are integrally stamped and formed. The first flat plate 213 and the first vertical plate 215 are respectively fitted with the top surface and the side wall of the left longitudinal beam of the vehicle body during installation. To ensure the reliability of positioning and connection, the first flat plate 213 is provided with a first bolt hole 2131 and a second bolt hole 2132, and the first vertical plate 215 is provided with a first positioning hole 2151 and a second positioning hole 2152.

[0052] The first positioning hole 2151 and the second positioning hole 2152 on the first vertical plate 215 can be installed with two bolts to connect the left longitudinal beam of the vehicle body during installation. The bolts play a role of fastening and also act as positioning pins to achieve 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 the bolts are installed in position, the first bolt hole 2131 and the second bolt hole 2132 on the first flat plate 213 can be aligned with the nut hole on the top surface of the left longitudinal beam of the vehicle body, so that the bolts can be assembled to fasten 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 them, 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 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, ensuring that the bolt holes on the first flat plate 213 can be aligned with the nut holes on the top surface of the left longitudinal beam.

[0056] For example, in this embodiment, the first positioning hole 2151 is a circular hole, and the hole diameter is 1 mm larger than the bolt diameter; the second positioning hole 2152 is an oblong hole, and the hole radius is 0.5 mm larger than the bolt radius. The adjustment amount (the distance between the centers of the semicircles on both sides) is set to 3 mm; Figure 4 As shown, the center of the first positioning hole 2151 and the centers of the two side 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 the movement in the X direction, and at the same time limit the movement in the Z direction and the rotation around the Z direction;

[0058] The second positioning hole 2152 can limit the left bracket 2 of the driving motor from rotating 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 limited, 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 and improve 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 the bolts, avoids the phenomenon that the bolts cannot be installed due to offset holes, 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, and 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 connected to each other, and 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 bonding to the wall surface of the reinforcing ribs 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 driving motor, wherein the second assembly hole of the left bracket 2 of the driving 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] The side plate 222 of the embodiment of the present application is provided with a third bolt hole 2221 and a fourth bolt hole 2222, and the second vertical plate 214 is provided with a first process hole 2141 and a second process hole 2142. 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, and 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, so that the first process hole 2141 and the second process hole 2142 can serve as through holes for the sleeve tool when installing the bolt, that is, it is convenient for the sleeve to pass through.

[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 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 function of the hole is improperly 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 (first positioning holes 2151, second positioning holes 2152), clamping holes (first bolt holes 2131, second bolt holes 2132, third bolt holes 2221, and fourth bolt holes 2222);

[0067] As mentioned above, the first positioning hole 2151 is a round hole, and the hole diameter is 1mm larger than the bolt diameter; the second positioning hole 2152 is a strip hole, and 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 limited, 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 no more than 3 mm larger than the bolt diameter, thereby avoiding the hole deviation phenomenon and reducing 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, and the box-shaped reinforcement rib is located between the first positioning hole 2151 and the second positioning hole 2152, and a weight reduction hole 2153 connected to the box-shaped reinforcement rib is arranged on the second flat plate 212.

[0072] A box-shaped reinforcement rib is welded and fixed between the first vertical plate 215 and the second flat plate 212 of the embodiment of the present application. The box-shaped reinforcement rib, the first vertical plate 215 and the second flat plate 212 together form a closed structure, which plays a role in structural reinforcement and is beneficial for transmitting force to the six hole positions (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).

[0073] The box-shaped reinforcement rib is located between the first positioning hole 2151 and the second positioning hole 2152, so as to evenly distribute the force to the periphery of the first positioning hole 2151 and the second positioning hole 2152 on both sides. The second flat plate 212 is provided with a weight-reducing hole 2153 connected to the box-shaped reinforcement rib. The weight-reducing hole 2153 is a lightweight design, which can reduce 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 of the embodiment of the present application include a first reinforcement plate 23 and a second reinforcement plate 24. The first reinforcement plate 23 is L-shaped and is composed of a rectangular plate and a triangular plate connected to each other. The second reinforcement plate 24 is triangular and is welded and fixed to the rectangular plate on the first reinforcement plate 23 to form a box structure with openings on both sides. During installation, the openings on both sides face the first vertical plate 215 and the second flat plate 212 respectively and are welded and fixed to the first vertical plate 215 and the second flat plate 212, thereby forming a closed box-shaped reinforcement structure, which plays the role of effectively reinforcing 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, and the three are perpendicular to each other; the two third reinforcing plates 25 are arranged on both sides, which can bear the force applied by the left elastic bracket assembly 3 and play a role in structural reinforcement. The weight reduction groove 2113 between the first mounting hole 2111 and the second mounting hole 2112 is a lightweight design, which can reduce 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] The fourth reinforcing plate 26 and the fifth reinforcing plate 27 are vertically welded and fixed between the second flat plate 212 and the second vertical plate 214 of the embodiment of the present application. The fourth reinforcing plate 26 and the fifth reinforcing plate 27 are both triangular in shape and play a role in structural reinforcement. In this embodiment, two fourth reinforcing plates 26 and five reinforcing plates 27 are provided, and both are welded and fixed away from the functional holes.

[0082] It should be noted that the left bracket 2 of the driving motor of the present application is obtained by welding stamped plates, and the bracket 21 is lightweight in design 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 transmitting force to the root;

[0083] The fourth reinforcing plate 26, the fifth reinforcing plate 27, a total of four reinforcing plates, the second flat plate 212, and the second vertical plate 214 form a semi-boxed structure, which is conducive to transmitting force to the root. The third reinforcing plate 25, the third flat plate 211, and the second vertical plate 214 form a semi-boxed structure for receiving the force applied by the left elastic bracket assembly 3. The upper semi-boxed design, the middle boxed design, and the lower semi-boxed design of the left bracket 2 of the driving motor are realized, thereby effectively improving the modal of the parts 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] A vehicle frame, the vehicle frame comprising a left longitudinal beam assembly 10 and a right longitudinal beam assembly 11 which are spaced apart from each other, and a sub-frame assembly 12 which is fixedly connected between the left longitudinal beam assembly 10 and the right longitudinal beam assembly 11;

[0086] The motor assembly 1 is located at the front side 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 bracket 2 of the driving motor of any one of the above embodiments connected to the left longitudinal beam assembly 10, and a right bracket 5 of the driving motor 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 is composed of a motor assembly 1, a left bracket 2 of a driving motor, a left elastic bracket assembly 3, a left bracket 4, a right bracket 5 of a driving 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 above-mentioned rear suspension assembly 8 not only supports the motor assembly 1, but also plays the role of connection, shock absorption and vibration isolation. The rear suspension assembly 8 connects the motor assembly 1 and the rear suspension bracket 9, and plays the role of attenuating and isolating the vibration and force 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, light weight, low cost, and easy assembly. It can improve the assembly processability, and the structural strength meets the design requirements, thereby reducing the manufacturing cost.

[0097] In the description of the present application, it should be noted that the terms "upper", "lower", etc. 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 the present application and simplifying the description, rather than indicating or implying 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 the present 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 it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present 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 only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such 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 including 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, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0099] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A left bracket of a driving motor, characterized in that: include: A support plate (21) 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 arranged on the flat plate of the first step, and a positioning hole being arranged 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 from the vertical plate of the first step in the horizontal direction 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 comprises a first flat plate (213) and a first vertical plate (215) fixedly connected to each other, the first assembly hole comprises a first bolt hole (2131) and a second bolt hole (2132) arranged on the first flat plate (213), and the positioning hole comprises a first positioning hole (2151) and a second positioning hole (2152) arranged on the first vertical plate (215).

3. The left bracket of the driving motor as claimed in 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 as claimed in claim 2, characterized in that: The second step comprises 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) comprises 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 as claimed in claim 4, characterized in that: The second assembly hole comprises 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.

6. The left bracket of the driving motor as claimed in 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); and a weight reduction hole (2153) connected to 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 reinforcing rib comprises a first reinforcing plate (23) and a second reinforcing plate (24); the first reinforcing plate (23) is L-shaped, the second reinforcing plate (24) is triangular-shaped, and the first reinforcing plate (23) and the second reinforcing 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 as claimed in 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 as claimed in 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) which are spaced apart from each other, and a sub-frame assembly (12) which is 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 at 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 auxiliary frame assembly (12), and a rear suspension assembly (8) connected between the rear suspension bracket (9) and the motor assembly (1).

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