Left elastic support assembly of driving motor and suspension system

Abstract

The invention relates to a drive motor left elastic support assembly and a suspension system, the drive motor left elastic support assembly comprises a suspension support, the suspension support comprises an outer sleeve and a metal plate support fixedly connected with the outer sleeve, the metal plate support is provided with an arc groove matched with the outer wall face of the outer sleeve, and the outer sleeve is located in the arc groove and connected with the metal plate support in a welded mode; and the soft cushion assembly is pressed in the outer sleeve in an interference manner and comprises an inner sleeve and a rubber body positioned in the inner sleeve, an inner framework is connected in the rubber body, and a fork arm with one end protruding out of the outer sleeve is pressed in the inner framework in an interference manner. According to the suspension support, the metal plate support is connected with the outer sleeve in a welded mode, the metal plate support is welded to the outer sleeve for structural design, and the modal and strength requirements of the suspension support are met. The cushion assembly is provided with the rubber body located between the inner framework and the inner sleeve, vibration and impact transmitted to the suspension support by the fork arm are buffered by adjusting the structure of the rubber body and configuring proper rubber hardness, and durability and reliability of the whole vehicle are improved.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicle suspension systems, and in particular to a left elastic bracket assembly and a suspension system for a drive motor. 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] When an electric vehicle starts and accelerates, the motor torque changes greatly and reaches the maximum torque quickly, which will cause a large impact load on the motor suspension system. When an electric vehicle encounters bad roads such as bumps and potholes, the motor suspension system will also be subject to a large impact load. Based on these characteristics, the suspension design of electric vehicles is quite different from that of fuel vehicles, requiring the suspension system to have not only sufficient rigidity and strength, but also effective limiting capabilities.

[0004] Based on the above-mentioned technical characteristics of the electric vehicle suspension system, if the left elastic bracket assembly is improperly designed, faults such as damage to the left elastic bracket assembly cushion or breakage of the suspension bracket will often occur, affecting the durability and reliability of the suspension system, and then affecting the durability and reliability of the entire vehicle, or causing assembly difficulties. Summary of the invention

[0005] The embodiment of the present application provides a left elastic bracket assembly and a suspension system for a driving motor to solve the problem in the related art that the soft pad of the left elastic bracket assembly is often damaged or the suspension bracket assembly is broken.

[0006] A first aspect of an embodiment of the present application provides a left elastic support assembly of a driving motor, comprising:

[0007] A suspension bracket, the suspension bracket comprising an outer sleeve and a sheet metal bracket fixedly connected to the outer sleeve, the sheet metal bracket being provided with an arc groove adapted to the outer wall surface of the outer sleeve, the outer sleeve being located in the arc groove and being welded to the sheet metal bracket;

[0008] The soft cushion assembly is interference-pressed in the outer sleeve, comprising an inner sleeve, a rubber body located in the inner sleeve, an inner frame connected to the rubber body, and a fork arm with one end protruding from the outside of the outer sleeve interference-pressed in the inner frame.

[0009] In some embodiments: the sheet metal bracket includes a bottom plate and side plates connected to each other, the bottom plate includes a flat plate and a vertical plate, the flat plate and the vertical plate are connected to each other to form an "L"-shaped structure, the side plates are vertically connected to the flat plate and are parallel to the vertical plates and spaced apart;

[0010] The arc groove comprises a first arc groove opened at the top of the vertical plate and a second arc groove opened at the top of the side plate. The first arc groove and the second arc groove have the same diameter and their centers are located on the same axis.

[0011] In some embodiments: a mounting hole is formed at one end of the plate, and an oblong hole is formed at the other end of the plate, wherein the length direction of the oblong hole is perpendicular to the axis of the outer sleeve;

[0012] The flat plate and the vertical plate are formed by integrally stamping and bending steel plates, and a limiting baffle located at one end of the outer sleeve and in contact with the outer sleeve is welded on one side of the vertical plate away from the side plate;

[0013] The arc angles of the first arc groove and the second arc groove are both greater than 180°, and the outer sleeve and the inner sleeve are both formed by processing of circular seamless steel pipes.

[0014] In some embodiments: the inner skeleton includes a trapezoidal tube with a trapezoidal cross-section, and a stop arm welded to the trapezoidal tube for supporting one end of the trapezoidal tube, the stop arm is located in the trapezoidal tube and fits against the inner wall of the trapezoidal tube.

[0015] In some embodiments: the fork arm comprises a support arm which is press-fitted into the inner frame by interference fit, and a connecting arm which is connected to the support arm and protrudes from the outer sleeve, and the support arm and the connecting arm are integrally cast and present a "Y"-shaped structure;

[0016] A first mounting hole is formed in the middle of the connecting arm, a second mounting hole and a third mounting hole are formed at both ends of the connecting arm, and the connecting lines among the first mounting hole, the second mounting hole and the third mounting hole form a triangle.

[0017] In some embodiments: the top surface and the bottom surface of the support arm close to the end of the connecting arm are both provided with limiting protrusions, and the limiting protrusions abut against the inner frame to limit the depth of the support arm inserted into the inner frame;

[0018] Both sides of the support arm are provided with first reinforcing ribs extending to the side walls of the connecting arm, and the top and bottom surfaces of the support arm are both provided with second reinforcing ribs extending to the top and bottom surfaces of the connecting arm;

[0019] The second reinforcing rib is arranged around the first mounting hole, the second mounting hole and the third mounting hole. The first mounting hole includes a circular hole and a tapered hole coaxially arranged with each other. The diameter of the tapered hole gradually increases in the direction away from the circular hole.

[0020] In some embodiments: the rubber body includes an outer annular colloid, and a main rib colloid and a secondary rib colloid located in the outer annular colloid, the main rib colloid and the secondary rib colloid both present a "C"-shaped structure, and the secondary rib colloid is located above the main rib colloid;

[0021] The opening of the main reinforcement colloid faces downward and is connected to the outer annular colloid as a whole, the opening of the secondary reinforcement colloid faces upward and is connected to the main reinforcement colloid as a whole, and a trapezoidal colloid for accommodating the inner skeleton is arranged in the secondary reinforcement colloid.

[0022] In some embodiments: the rubber body also includes a lower limit block located at the bottom of the main reinforcement colloid and connected to the outer annular colloid, an upper limit block located at the top of the trapezoidal colloid and connected to the outer annular colloid, a left limit block located on the left side of the main reinforcement colloid and the secondary reinforcement colloid and connected to the outer annular colloid, and a right limit block located on the right side of the main reinforcement colloid and the secondary reinforcement colloid and connected to the outer annular colloid.

[0023] In some embodiments: the inner sleeve and the inner skeleton are vulcanized into one piece with the rubber body, and a plurality of strip buffer ribs are provided on the side of the left limit block and the right limit block close to the secondary reinforcement colloid at intervals, and the strip buffer ribs are used to buffer the impact force when the secondary reinforcement colloid contacts the left limit block or the right limit block.

[0024] A second aspect of an embodiment of the present application provides a suspension system, including:

[0025] 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;

[0026] 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;

[0027] A suspension unit, the suspension unit comprising a left bracket connected to the left longitudinal beam assembly and a right bracket connected to the right longitudinal beam assembly;

[0028] A left elastic bracket assembly of a driving motor according to any one of claims 1 to 9 connected to the left bracket, and a right elastic bracket assembly of a driving motor connected to the right bracket;

[0029] A left bracket connected between the left elastic bracket assembly of the driving motor and the motor assembly, and a right bracket connected between the right elastic bracket assembly of the driving motor and the motor assembly;

[0030] A rear suspension bracket connected to the subframe assembly, and a rear suspension assembly connected between the rear suspension bracket and the motor assembly.

[0031] The beneficial effects of the technical solution provided by this application include:

[0032] The embodiment of the present application provides a left elastic support assembly and a suspension system for a driving motor. Since the left elastic support assembly of the driving motor of the present application is provided with a suspension support, the suspension support includes an outer sleeve and a sheet metal support fixedly connected to the outer sleeve, and an arc groove matched with the outer wall surface of the outer sleeve is opened on the sheet metal support, and the outer sleeve is located in the arc groove and welded to the sheet metal support; a cushion assembly, which is interference-pressed in the outer sleeve, includes an inner sleeve, a rubber body located in the inner sleeve, an inner skeleton is connected in the rubber body, and a fork arm with one end protruding from the outside of the outer sleeve is interference-pressed in the inner skeleton.

[0033] Therefore, the suspension bracket of the left elastic bracket assembly of the driving motor of the present application adopts a sheet metal bracket and an outer sleeve welded and connected, and the suspension bracket adopts a sheet metal bracket welded with an outer sleeve for structural design to meet the modal and strength requirements of the suspension bracket. The sheet metal bracket is provided with an arc groove adapted to the outer wall surface of the outer sleeve, and the outer sleeve is located in the arc groove and welded to the sheet metal bracket, so that the structure of the suspension bracket is simple, reliable, low-cost, easy to manufacture, and easy to assemble. The cushion assembly is provided with a rubber body located between the inner frame and the inner sleeve. By adjusting the structure of the rubber body and configuring the appropriate hardness of the rubber material, the appropriate stiffness is obtained, thereby buffering the vibration and impact transmitted from the fork arm to the suspension bracket, thereby improving the durability and reliability of the whole vehicle.

[0034] In addition, the second mounting hole, the first mounting hole, and the third mounting hole of the present application are the connection holes between the left elastic bracket assembly of the drive motor and the left bracket; and the second mounting hole is set as a combination structure of a tapered hole and a circular hole. The tapered hole is conducive to the assembly of the motor assembly, and is conducive to the alignment of the stud of the left bracket with the second mounting hole of the left elastic bracket assembly of the drive motor, thereby improving the assembly processability. The circular hole is conducive to ensuring the matching accuracy of the stud of the second mounting hole and the left bracket, and the aperture of the circular hole is 1mm larger than the diameter of the stud. The first mounting hole and the third mounting hole are set as large circular holes, and the aperture is 2mm larger than the diameter of the stud of the left bracket, so that the adjustment amount can be increased and the assembly processability can be improved. The line connecting the center points of the second mounting hole, the first mounting hole, and the third mounting hole presents a triangle, that is, the three holes are arranged in a triangle, so that the stability principle of the triangle stability can be used to improve the stability of the connection between the fork arm and the left bracket, that is, the stability of the connection between the left elastic bracket assembly of the drive motor and the left bracket is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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.

[0036] Figure 1 This is a schematic structural diagram of the left elastic bracket assembly of the driving motor according to an embodiment of the present application;

[0037] Figure 2 This is a schematic diagram of the structure of the sheet metal bracket of the embodiment of the present application;

[0038] Figure 3 This is a schematic diagram of the structure of the cushion assembly of the embodiment of the present application;

[0039] Figure 4 This is a schematic diagram of the structure of the inner sleeve in an embodiment of the present application;

[0040] Figure 5 This is a schematic diagram of the structure of the skeleton in the embodiment of the present application;

[0041] Figure 6 This is a structural stereogram of the fork arm of an embodiment of the present application;

[0042] Figure 7 This is a top view of the structure of the fork arm of the embodiment of the present application;

[0043] Figure 8 It is a cross-sectional schematic diagram of a fork arm according to an embodiment of the present application;

[0044] Fig. 9 This is a schematic diagram of the structure of the rubber body of the embodiment of the present application;

[0045] Fig.10 It is a schematic diagram of the structure of the suspension system of an embodiment of the present application.

[0046] Reference numerals:

[0047] 1. Motor assembly; 2. Left bracket; 3. Drive motor left elastic bracket assembly; 4. Left bracket; 5. Right bracket; 6. Drive motor 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;

[0048] 31. outer sleeve; 32. cushion assembly; 33. bottom plate; 34. side plate; 35. stopper; 321. inner sleeve; 322. rubber body; 323. inner frame; 324. fork arm; 331. flat plate; 332. vertical plate; 341. second arc groove;

[0049] 3221, outer annular colloid; 3222, main reinforcement colloid; 3223, secondary reinforcement colloid; 3224, trapezoidal colloid; 3225, upper limit block; 3226, lower limit block; 3227, left limit block; 3228, right limit block; 3231, trapezoidal tube; 3232, stop arm;

[0050] 3241, support arm; 3242, limiting protrusion; 3243, first reinforcing rib; 3244, connecting arm; 3245, second reinforcing rib; 3246, second mounting hole; 3247, first mounting hole; 3248, third mounting hole;

[0051] 3311, mounting hole; 3312, oblong hole; 3321, first arc groove; 32471, tapered hole; 32472, circular hole. DETAILED DESCRIPTION

[0052] 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.

[0053] The embodiment of the present application provides a left elastic bracket assembly and a suspension system for a driving motor, which can solve the problem in the related art that the soft pad of the left elastic bracket assembly is often damaged or the suspension bracket assembly is broken.

[0054] See also Figures 1 to 3 As shown, the first aspect of the embodiment of the present application provides a left elastic bracket assembly of a driving motor, and the left elastic bracket assembly 3 of the driving motor includes:

[0055] The suspension bracket includes an outer sleeve 31 and a sheet metal bracket fixedly connected to the outer sleeve 31. An arc groove matching the outer wall surface of the outer sleeve 31 is opened on the sheet metal bracket. The diameter of the arc groove is the same as the diameter of the outer sleeve 31. The outer sleeve 31 is located in the arc groove and is welded to the sheet metal bracket.

[0056] The cushion assembly 32 is press-fitted into the outer sleeve 31 by interference fit. The cushion assembly 32 includes an inner sleeve 321, a rubber body 322 located in the inner sleeve 321, an inner skeleton 323 is connected to the rubber body 322, and a fork arm 324 with one end protruding from the outside of the outer sleeve 31 is press-fitted into the inner skeleton 323 by interference fit. Figure 1 and Figure 2 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.

[0057] The suspension bracket of the left elastic bracket assembly 3 of the driving motor of the embodiment of the present application adopts a sheet metal bracket and an outer sleeve 31 welded and connected, and the suspension bracket adopts a sheet metal bracket welded with the outer sleeve 31 for structural design, which meets the modal and strength requirements of the suspension bracket. The sheet metal bracket is provided with an arc groove adapted to the outer wall surface of the outer sleeve 31, and the outer sleeve 31 is located in the arc groove and welded and connected with the sheet metal bracket, so that the structure of the suspension bracket is simple, reliable, low-cost, easy to manufacture, and easy to assemble.

[0058] The cushion assembly 32 is provided with a rubber body 322 located between the inner frame 323 and the inner sleeve 321. By adjusting the structure of the rubber body 322 and configuring the appropriate hardness of the rubber material, the appropriate rigidity is obtained, thereby buffering the vibration and impact transmitted from the fork arm 324 to the suspension bracket, thereby improving the durability and reliability of the whole vehicle. The inner frame 323 and the inner sleeve 321 are integrated with the rubber body 322 by vulcanization, thereby improving the connection stability of the inner frame 323 and the inner sleeve 321 with the rubber body 322.

[0059] In some alternative embodiments: See Figures 1 to 4 As shown, the embodiment of the present application provides a left elastic bracket assembly of a driving motor, wherein the sheet metal bracket of the left elastic bracket assembly 3 of the driving motor includes a bottom plate 33 and a side plate 34 connected to each other. The bottom plate 33 includes a flat plate 331 and a vertical plate 332, the flat plate 331 and the vertical plate 332 are connected to each other to form an "L"-shaped structure, and the side plate 34 is vertically connected to the flat plate 331 and is parallel to the vertical plate 332 and is spaced apart.

[0060] The flat plate 331 is a rectangular structure and is parallel to the XOY plane of the vehicle. The arc groove includes a first arc groove 3321 opened at the top of the vertical plate 332 and a second arc groove 341 opened at the top of the side plate 34. The first arc groove 3321 and the second arc groove 341 have the same diameter and the center of the circle is located on the same axis. The first arc groove 3321 and the second arc groove 341 are used to jointly position and assemble the outer sleeve 31.

[0061] A mounting hole 3311 is provided at one end of the flat plate 331, and an oblong hole 3312 is provided at the other end of the flat plate 331, and the length direction of the oblong hole 3312 is perpendicular to the axis of the outer sleeve 31. The mounting hole 3311 and the oblong hole 3312 are used to connect with the left bracket 4, and the oblong hole 3312 is used to facilitate the installation of the bottom plate 33 on the bolts of the left bracket 4.

[0062] The flat plate 331 and the vertical plate 332 are formed by stamping and bending steel plates in one piece, and the side plate 34 is welded to the flat plate 331 or formed by stamping and bending steel plates in one piece. A stopper 35 located at one end of the outer sleeve 31 and in contact with the outer sleeve 31 is welded to the side of the vertical plate 332 away from the side plate 34. The side plate 34, the flat plate 331 and the vertical plate 332 are preferably formed by stamping and bending steel plates in one piece, thereby avoiding stress concentration and fatigue fracture caused by welding processing, and avoiding the generation of pores inside the casting processing.

[0063] The arc angles of the first arc groove 3321 and the second arc groove 341 are both greater than 180°, and the outer sleeve 31 and the inner sleeve 321 are both formed by round seamless steel pipes. The arc angles of the first arc groove 3321 and the second arc groove 341 are both greater than 180°, so that the outer sleeve 31 can be positioned in the first arc groove 3321 and the second arc groove 341 in the X direction and the Z direction, and the limit baffle 35 positions the outer sleeve 31 in the first arc groove 3321 and the second arc groove 341 in the Y direction.

[0064] In some alternative embodiments: See Figure 3 and Figure 5 As shown, the embodiment of the present application provides a left elastic support assembly of a driving motor, wherein the inner frame 323 of the left elastic support assembly 3 of the driving motor includes a trapezoidal tube 3231 having a trapezoidal cross section, and a stop arm 3232 welded to the trapezoidal tube 3231 for supporting one end of the trapezoidal tube 3231. The stop arm 3232 is located inside the trapezoidal tube 3231 and fits against the inner wall of the trapezoidal tube 3231.

[0065] The stop arm 3232 and the trapezoidal tube 3231 both use metal frames. The inner hole of the trapezoidal tube 3231 is used to adapt to the fork arm 324. One end of the fork arm 324 is press-fitted into the interior of the trapezoidal tube 3231. The stop arm 3232 is used to block one end of the trapezoidal tube 3231, so that the inner frame 323 forms a hollow tube body structure with one end open and all sides closed.

[0066] In some alternative embodiments: See Figure 6 and Figure 7 As shown, an embodiment of the present application provides a left elastic support assembly of a driving motor, wherein the fork arm 324 of the left elastic support assembly 3 of the driving motor includes a support arm 3241 which is interference-fitted into the inner skeleton 323, and a connecting arm 3244 which is connected to the support arm 3241 and protrudes from the outside of the outer sleeve 31, wherein the support arm 3241 and the connecting arm 3244 are integrally cast and have a "Y"-shaped structure, wherein the connecting arm 3244 is used to connect to the left support 4, and the support arm 3241 is used to connect to the inner skeleton 323.

[0067] A first mounting hole 3247 is provided in the middle of the connecting arm 3244, and a second mounting hole 3246 and a third mounting hole 3248 are provided at both ends of the connecting arm 3244, respectively, and the connecting lines between the first mounting hole 3247, the second mounting hole 3246 and the third mounting hole 3248 form a triangle. That is, the first mounting hole 3247, the second mounting hole 3246 and the third mounting hole 3248 are arranged in a triangle, so that the stability principle of the triangle can be utilized to improve the stability of the connection between the fork arm 324 and the left bracket 4, that is, to improve the stability of the connection between the left elastic bracket assembly 3 of the driving motor and the left bracket 4.

[0068] In some alternative embodiments: See Figures 6 to 8 As shown, an embodiment of the present application provides a left elastic bracket assembly of a driving motor, wherein the top and bottom surfaces of the support arm 3241 of the driving motor left elastic bracket assembly 3 close to one end of the connecting arm 3244 are provided with a limiting protrusion 3242, and the limiting protrusion 3242 abuts against the inner frame 323 to limit the depth of the support arm 3241 inserted into the inner frame 323.

[0069] The first reinforcing ribs 3243 extending to the side walls of the connecting arm 3244 are provided on both sides of the supporting arm 3241, and the second reinforcing ribs 3245 extending to the top and bottom surfaces of the connecting arm 3244 are provided on the top and bottom surfaces of the supporting arm 3241. The second reinforcing ribs 3245 are arranged around the first mounting hole 3247, the second mounting hole 3246 and the third mounting hole 3248. The first mounting hole 3247 includes a circular hole 32472 and a tapered hole 32471 coaxially arranged with each other, and the diameter of the tapered hole 32471 gradually increases in the direction away from the circular hole 32472.

[0070] The first mounting hole 3247, the second mounting hole 3246 and the third mounting hole 3248 are connecting holes of the left elastic bracket assembly 3 of the driving motor and the left bracket 4. The first mounting hole 3247 is composed of a circular hole 32472 and a tapered hole 32471 which are coaxially arranged with each other. The tapered hole 32471 is conducive to aligning the stud of the left bracket 4 with the mounting hole of the left elastic bracket assembly 3 of the driving motor when assembling the driving motor, thereby improving the assembly processability.

[0071] The diameter of the circular hole 32472 is 11 mm, the minimum diameter of the tapered hole 32471 is 11 mm, the maximum diameter of the tapered hole 32471 is 13 mm, and the taper of the tapered hole 32471 is 14°. The tapered hole 32471 is connected to the circular hole 32472, and the tapered hole 32471 is located below the circular hole 32472. The diameters of the second mounting hole 3246 and the third mounting hole 3248 are both 12 mm.

[0072] The circular hole 32472 is conducive to the matching accuracy between the first mounting hole 3247 and the stud of the left bracket 4, and the diameter of the circular hole 32472 is 1mm larger than the diameter of the stud. The second mounting hole 3246 and the third mounting hole 3248 are set as large circular holes, and the diameter of the second mounting hole 3246 and the third mounting hole 3248 is 2mm larger than the diameter of the stud of the left bracket 4, which can increase the adjustment amount and improve the assembly process.

[0073] In some alternative embodiments: See Fig. 9 As shown, the embodiment of the present application provides a left elastic support assembly of a driving motor, wherein the rubber body 322 of the left elastic support assembly 3 of the driving motor includes an outer annular colloid 3221, and a main rib colloid 3222 and a secondary rib colloid 3223 located in the outer annular colloid 3221. The main rib colloid 3222 and the secondary rib colloid 3223 are both in a "C" shape, and the secondary rib colloid 3223 is located above the main rib colloid 3222.

[0074] The opening of the main reinforcement colloid 3222 faces downward and is connected to the outer annular colloid 3221 as a whole. The opening of the secondary reinforcement colloid 3223 faces upward and is connected to the main reinforcement colloid 3222 as a whole. The secondary reinforcement colloid 3223 is provided with a trapezoidal colloid 3224 for accommodating the inner skeleton 323. A cavity for accommodating the inner skeleton 323 is formed inside the trapezoidal colloid 3224. The inner skeleton 323 and the trapezoidal colloid 3224 are vulcanized into one, which can enable the trapezoidal colloid 3224 and the inner skeleton 323 to obtain the maximum bonding force.

[0075] The outer annular colloid 3221 is vulcanized on the inner sleeve 321, which can make the rubber body 322 and the inner sleeve 321 obtain the maximum bonding force; the symmetrically arranged main reinforcement colloid 3222 and secondary reinforcement colloid 3223 are a whole, and the main reinforcement colloid 3222 and secondary reinforcement colloid 3223 are the main force-bearing rubber components of the cushion assembly 32.

[0076] The rubber body 322 also includes a lower limit block 3226 located at the bottom of the main reinforcement colloid 3222 and connected to the outer annular colloid 3221, an upper limit block 3225 located at the top of the trapezoidal colloid 3224 and connected to the outer annular colloid 3221, a left limit block 3227 located on the left side of the main reinforcement colloid 3222 and the secondary reinforcement colloid 3223 and connected to the outer annular colloid 3221, and a right limit block 3228 located on the right side of the main reinforcement colloid 3222 and the secondary reinforcement colloid 3223 and connected to the outer annular colloid 3221.

[0077] The upper limit block 3225, the lower limit block 3226, the left limit block 3227, and the right limit block 3228 of the embodiment of the present application respectively limit the movement of the rubber body 322 in the Z direction, -Z direction, X direction, and -X direction. The above-mentioned limit baffle 35 is welded on the outer sleeve 31, and its main function is to limit the movement of the rubber body 322 in the -Y direction of the whole vehicle. That is, the rubber body 322 is effectively limited in the Z, X, and Y directions, ensuring that the rubber body 322 works within the specified design deformation, thereby ensuring the reliability of the left elastic bracket assembly 3 of the drive motor.

[0078] The inner sleeve 321 and the inner skeleton 323 are vulcanized into one piece with the rubber body 322. The left limit block 3227 and the right limit block 3228 are provided with a plurality of strip buffer ribs arranged at intervals on one side close to the secondary reinforcement colloid 3223. The strip buffer ribs are used to buffer the impact force when the secondary reinforcement colloid 3223 contacts the left limit block 3227 or the right limit block 3228.

[0079] See also Fig.10 As shown, the second aspect of the embodiment of the present application provides a suspension system, including:

[0080] The vehicle frame includes 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. The motor assembly 1 is located at the front side of the sub-frame assembly 12 and between the left longitudinal beam assembly 10 and the right longitudinal beam assembly 11.

[0081] A suspension unit, the suspension unit includes a left bracket 2 connected to a left longitudinal beam assembly 10, a right bracket 5 connected to a right longitudinal beam assembly 11; a left elastic bracket assembly 3 of a driving motor described in any of the above embodiments connected to the left bracket 2, a right elastic bracket assembly 6 of a driving motor connected to the right bracket 5; a left bracket 4 connected between the left elastic bracket assembly 3 of the driving motor and the motor assembly 1, a right bracket 7 connected between the right elastic bracket assembly 6 of the driving motor and the motor assembly 1, a rear suspension bracket 9 connected to a subframe assembly 12, and a rear suspension assembly 8 connected between the rear suspension bracket 9 and the motor assembly 1.

[0082] The left bracket 2 of the embodiment of the present application is installed on the left longitudinal beam assembly 10 by bolts; the left elastic bracket assembly 3 of the driving motor is installed on the left bracket 2 by bolts and nuts; the left bracket 4 is installed on the motor assembly 1 by bolts and connected to the left elastic bracket assembly 3 of the driving motor. The right bracket 5 is installed on the right longitudinal beam assembly 11 by bolts; the right elastic bracket assembly 6 of the driving motor is installed on the right bracket 5 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 of the driving motor; the rear suspension assembly 8 is installed on the motor assembly 1 by bolts and connected to the rear suspension bracket 9.

[0083] The left bracket 4, the right bracket 7, and the rear suspension assembly 8 jointly support the motor assembly 1; the left bracket 2, the right bracket 5, and the rear suspension bracket 9 jointly connect the motor assembly 1 to the subframe assembly 12; the left elastic bracket assembly 3 of the driving motor, the right elastic bracket assembly 6 of the driving motor, and the rear suspension assembly 8 play the role of connection, shock absorption, and vibration isolation. As mentioned above, the rear suspension assembly 8 plays the role of supporting the motor assembly 1, and also plays the role of connection, shock absorption, and vibration isolation. That is, the rear suspension assembly 8 connects the motor assembly 1 and the rear suspension bracket 9, attenuating and isolating the vibration and torsional force transmitted from the motor assembly 1 to the rear suspension bracket 9.

[0084] 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.

[0085] 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.

[0086] 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 elastic bracket assembly of a driving motor, characterized in that: include: A suspension bracket, the suspension bracket comprising an outer sleeve (31) and a sheet metal bracket fixedly connected to the outer sleeve (31), the sheet metal bracket being provided with an arc groove adapted to the outer wall surface of the outer sleeve (31), the outer sleeve (31) being located in the arc groove and being welded to the sheet metal bracket; A cushion assembly (32) is press-fitted into the outer sleeve (31) and comprises an inner sleeve (321), a rubber body (322) located in the inner sleeve (321), an inner skeleton (323) connected to the rubber body (322), and a fork arm (324) having one end protruding from the outside of the outer sleeve (31) and press-fitted into the inner skeleton (323).

2. A drive motor left elastic bracket assembly as claimed in claim 1, characterized in that: The sheet metal bracket comprises a bottom plate (33) and a side plate (34) which are connected to each other, the bottom plate (33) comprises a flat plate (331) and a vertical plate (332), the flat plate (331) and the vertical plate (332) are connected to each other to form an "L"-shaped structure, and the side plate (34) is vertically connected to the flat plate (331) and is parallel to and spaced from the vertical plate (332); The arc groove comprises a first arc groove (3321) opened at the top of the vertical plate (332) and a second arc groove (341) opened at the top of the side plate (34); the first arc groove (3321) and the second arc groove (341) have the same diameter and their centers are located on the same axis.

3. A drive motor left elastic bracket assembly as claimed in claim 2, characterized in that: A mounting hole (3311) is formed at one end of the flat plate (331), and an oblong hole (3312) is formed at the other end of the flat plate (331), wherein the length direction of the oblong hole (3312) is perpendicular to the axis of the outer sleeve (31); The flat plate (331) and the vertical plate (332) are formed by integrally stamping and bending steel plates, and a limiting baffle (35) located at one end of the outer sleeve (31) and in contact with the outer sleeve (31) is welded on a side of the vertical plate (332) away from the side plate (34); The arc angles of the first arc groove (3321) and the second arc groove (341) are both greater than 180°, and the outer sleeve (31) and the inner sleeve (321) are both formed by processing of circular seamless steel pipes.

4. A drive motor left elastic bracket assembly as claimed in claim 1, characterized in that: The inner skeleton (323) comprises a trapezoidal tube (3231) having a trapezoidal cross-section, and a retaining arm (3232) welded to the trapezoidal tube (3231) for supporting one end of the trapezoidal tube (3231); the retaining arm (3232) is located inside the trapezoidal tube (3231) and fits against the inner wall of the trapezoidal tube (3231).

5. A drive motor left elastic bracket assembly as claimed in claim 1 or 4, characterized in that: The fork arm (324) comprises a support arm (3241) which is press-fitted into the inner frame (323) by interference fit, and a connecting arm (3244) which is connected to the support arm (3241) and protrudes from the outside of the outer sleeve (31); the support arm (3241) and the connecting arm (3244) are integrally cast and present a "Y"-shaped structure; A first mounting hole (3247) is provided in the middle of the connecting arm (3244), and a second mounting hole (3246) and a third mounting hole (3248) are respectively provided at both ends of the connecting arm (3244), and the connecting lines between the first mounting hole (3247), the second mounting hole (3246) and the third mounting hole (3248) form a triangle.

6. A drive motor left elastic bracket assembly as claimed in claim 5, characterized in that: The top surface and the bottom surface of one end of the support arm (3241) close to the connecting arm (3244) are both provided with a limiting protrusion (3242), and the limiting protrusion (3242) abuts against the inner frame (323) to limit the depth of the support arm (3241) inserted into the inner frame (323); Both sides of the support arm (3241) are provided with first reinforcing ribs (3243) extending to the side walls of the connecting arm (3244), and the top and bottom surfaces of the support arm (3241) are both provided with second reinforcing ribs (3245) extending to the top and bottom surfaces of the connecting arm (3244); The second reinforcing rib (3245) is arranged around the first mounting hole (3247), the second mounting hole (3246) and the third mounting hole (3248), and the first mounting hole (3247) includes a circular hole (32472) and a conical hole (32471) which are coaxially arranged with each other, and the diameter of the conical hole (32471) gradually increases in the direction away from the circular hole (32472).

7. The left elastic support assembly of a driving motor according to claim 1, characterized in that: The rubber body (322) comprises an outer annular colloid (3221), and a main rib colloid (3222) and a secondary rib colloid (3223) located in the outer annular colloid (3221), wherein the main rib colloid (3222) and the secondary rib colloid (3223) are both in a "C"-shaped structure, and the secondary rib colloid (3223) is located above the main rib colloid (3222); The opening of the main reinforcement colloid (3222) faces downward and is connected to the outer annular colloid (3221), the opening of the secondary reinforcement colloid (3223) faces upward and is connected to the main reinforcement colloid (3222), and a trapezoidal colloid (3224) for accommodating the inner skeleton (323) is provided in the secondary reinforcement colloid (3223).

8. A drive motor left elastic bracket assembly as claimed in claim 7, characterized in that: The rubber body (322) further comprises a lower limit block (3226) located at the bottom of the main reinforcement rubber body (3222) and connected to the outer annular rubber body (3221), an upper limit block (3225) located at the top of the trapezoidal rubber body (3224) and connected to the outer annular rubber body (3221), a left limit block (3227) located on the left side of the main reinforcement rubber body (3222) and the secondary reinforcement rubber body (3223) and connected to the outer annular rubber body (3221), and a right limit block (3228) located on the right side of the main reinforcement rubber body (3222) and the secondary reinforcement rubber body (3223) and connected to the outer annular rubber body (3221).

9. A drive motor left elastic bracket assembly as claimed in claim 8, characterized in that: The inner sleeve (321) and the inner skeleton (323) are vulcanized into one piece with the rubber body (322); a plurality of strip-shaped buffer ribs are provided at intervals on one side of the left limit block (3227) and the right limit block (3228) close to the secondary rib colloid (3223); the strip-shaped buffer ribs are used to buffer the impact force when the secondary rib colloid (3223) contacts the left limit block (3227) or the right limit block (3228).

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) connected to the left longitudinal beam assembly (10), and a right bracket (5) connected to the right longitudinal beam assembly (11); A left elastic support assembly (3) of a driving motor according to any one of claims 1 to 9 connected to the left bracket (2), and a right elastic support assembly (6) of a driving motor connected to the right bracket (5); A left bracket (4) connected between the left elastic bracket assembly (3) of the driving motor and the motor assembly (1), and a right bracket (7) connected between the right elastic bracket assembly (6) of the driving motor 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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