A drive motor left bracket and suspension system

Abstract

The present application relates to a drive motor left bracket and suspension system, which belongs to the technical field of electric vehicle suspension systems. The drive motor left bracket includes a mounting plate, which includes a top plate and side plates, and the top plate and side plates are interconnected to form an "L"-shaped structure; reinforcing ribs, which include a first longitudinal rib, a second longitudinal rib, and a third longitudinal rib, which are all vertically fixedly connected to the side plates and the tops are all vertically fixedly connected to the top plates; a connecting plate, which is parallel to the side plates, and the first longitudinal rib, the second longitudinal rib, and the third longitudinal rib are all fixedly connected to the connecting plate. The present application utilizes the structural technical principles such as the good mechanical properties of "L"-shaped beams, "T"-shaped beams, and "U"-shaped beams, and adopts an ingenious structural design, especially the "U"-shaped beam design requirements at the connection between the drive motor left bracket and the motor assembly, so that the mode of the drive motor left bracket is increased from less than 500Hz to greater than 700Hz, meeting the design requirements, achieving a lightweight design, and reducing the cost of parts.

Description

Technical Field

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

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

[0003] The unbalanced order frequency of motor rotation ranges from 100 to 600 Hz, requiring the mount to have a high modal response to avoid resonance. This requires avoiding the first- and second-order modes of the electric drive assembly and the modes of other vehicle systems. Due to these characteristics, improper mount design often leads to failures such as mount breakage, impacting the durability and reliability of the mount system, and ultimately the vehicle as a whole.

[0004] In order to prevent the left bracket of the drive motor from breaking, the structural design of the left bracket of the motor drive motor generally adopts the method of adding reinforcing ribs or increasing the thickness of the sheet metal, which makes the bracket design more complicated. Even so, the highest bracket mode can only reach 400 to 500 Hz. This results in high cost of the suspension bracket and high risk of damage due to the mode not meeting the design requirements. Summary of the Invention

[0005] The embodiment of the present application provides a left bracket of a driving motor and a suspension system to solve the problem in the related art that the left bracket of the driving motor has a high risk of damage due to the modality failing to meet the design requirements.

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

[0007] The mounting plate includes a top plate and a side plate, wherein the top plate and the side plate are connected to each other to form an L-shaped structure, the top plate is provided with a first through-hole group, and the side plate is provided with a second through-hole group at one end away from the top plate;

[0008] The reinforcing ribs include a first longitudinal rib, a second longitudinal rib, and a third longitudinal rib, each of which is vertically fixedly connected to the side panels and has a top portion vertically fixedly connected to the top panel, wherein ends of the first longitudinal rib, the second longitudinal rib, and the third longitudinal rib away from the top panel all extend toward the second through hole group;

[0009] The connecting plate is parallel to the side plate, the first longitudinal rib, the second longitudinal rib and the third longitudinal rib are all fixedly connected to the connecting plate, and a third through hole group is provided on the connecting plate, and the third through hole group is coaxial with the second through hole group.

[0010] On the first aspect, in some embodiments, the lower end of the second longitudinal rib is bent and extended and fixedly connected to the first longitudinal rib, a transverse rib fixed to the connecting plate is connected between the second longitudinal rib and the third longitudinal rib, and a sleeve connecting the second through hole group and the third through hole group is fixed between the side plate and the connecting plate.

[0011] In the first aspect, in some embodiments, the first through hole group includes a first hole, a second hole, and a third hole, the first hole is located between the first longitudinal rib and the second longitudinal rib, the third hole is located between the second longitudinal rib and the third longitudinal rib, and the second hole is located between the first hole and the third hole.

[0012] In a first aspect, in some embodiments, the side panels and the connecting panels are each provided with a notch for accommodating the motor, and the first through-hole group includes a fourth hole and a fifth hole located between the first longitudinal rib and the notch, and a sixth hole located between the second longitudinal rib and the third longitudinal rib;

[0013] The third through hole group includes a seventh hole coaxial with the fourth hole, an eighth hole coaxial with the fifth hole, and a ninth hole coaxial with the sixth hole.

[0014] On the first aspect, in some embodiments, the longitudinal length of the first longitudinal rib is greater than the longitudinal lengths of the second and third longitudinal ribs, the fourth and fifth holes are located below the second longitudinal rib, and a reinforcing ring coaxial with the third hole is fixed on the top plate.

[0015] In the first aspect, in some embodiments, the first longitudinal rib includes a first upper plate, a first middle plate, and a first lower plate that are welded together in sequence, the lateral width of the first upper plate is greater than the lateral width of the first lower plate, the first middle plate is inclined toward the second longitudinal rib and the cross-sectional area gradually decreases from top to bottom, and the connecting plate is welded together with the first lower plate.

[0016] In the first aspect, in some embodiments, the second longitudinal rib includes a second upper plate and a second lower plate connected by welding, the second lower plate is inclined toward the first longitudinal rib and is welded to the first longitudinal rib, and the connecting plate is welded to the second lower plate.

[0017] On the first aspect, in some embodiments, the third longitudinal reinforcement includes a third upper plate, a third middle plate, and a third lower plate that are welded together in sequence, the lateral width of the third upper plate is greater than the lateral width of the third lower plate, the third middle plate is inclined back toward the second longitudinal reinforcement and the cross-sectional area gradually decreases from top to bottom, and the connecting plate is welded to the third lower plate.

[0018] In the first aspect, in some embodiments, a first weight-reducing hole is provided between the first longitudinal rib and the second longitudinal rib, and a second weight-reducing hole is provided between the second longitudinal rib and the third longitudinal rib, and both the first weight-reducing hole and the second weight-reducing hole are located above the connecting plate.

[0019] In a second aspect, an embodiment of the present application provides a suspension system, comprising:

[0020] A vehicle frame, the vehicle frame comprising a left longitudinal beam assembly and a right longitudinal beam assembly spaced apart from each other, and a subframe assembly fixedly connected between the left longitudinal beam assembly and the right longitudinal beam assembly;

[0021] a motor assembly, the motor assembly being located on the front side of the subframe assembly and between the left longitudinal beam assembly and the right longitudinal beam assembly;

[0022] 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;

[0023] a left elastic bracket assembly connected to the left bracket, and a right elastic bracket assembly connected to the right bracket;

[0024] A left drive motor bracket as described in any one of the above items connected between the left elastic bracket assembly and the motor assembly, and a right drive motor bracket connected between the right elastic bracket assembly and the motor assembly;

[0025] A rear suspension bracket connected to the subframe assembly, and a rear suspension assembly connected between the rear suspension bracket and the motor assembly.

[0026] The beneficial effects of the technical solution provided by this application include:

[0027] The embodiment of the present application provides a left bracket of a driving motor, which cleverly utilizes the structural technical principle that "L"-shaped beams, "T"-shaped beams, and "U"-shaped beams have good mechanical properties, and combines the top plate and the side plates into an "L"-shaped beam. The first longitudinal reinforcement is respectively combined with the top plate and the side plates to form an "L"-shaped beam; the second longitudinal reinforcement is combined with the side plates to form a "T"-shaped beam.

[0028] The third longitudinal reinforcement is combined with the top plate and the side plate to form an "L"-shaped beam, the connecting plate is combined with the first longitudinal reinforcement and the side plate to form a "U"-shaped beam, the connecting plate is combined with the second longitudinal reinforcement and the side plate to form a "U"-shaped beam, and the connecting plate is combined with the third longitudinal reinforcement and the side plate to form a "U"-shaped beam.

[0029] Therefore, the modal of the connection between the left bracket of the drive motor and the left elastic bracket assembly can be effectively improved, and the stress of the connection can be reduced at the same time, so as to achieve the overall structural stability of the left bracket of the drive motor, thereby achieving the purpose of improving the overall modal and reducing the stress requirements, meeting the design requirements, achieving lightweight design, and reducing parts costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 This is a schematic structural diagram of the left bracket of the driving motor according to an embodiment of the present application;

[0032] Figure 2 This is a schematic structural diagram of a mounting plate according to an embodiment of the present application;

[0033] Figure 3 This is a schematic structural diagram of the reinforcing ribs in an embodiment of the present application;

[0034] Figure 4 This is a schematic structural diagram of a sleeve according to an embodiment of the present application;

[0035] Figure 5 This is a schematic diagram of the connection between the connecting plate and the reinforcing ribs according to an embodiment of the present application;

[0036] Figure 6 This is a schematic structural diagram of a connecting plate according to an embodiment of the present application;

[0037] Figure 7 This is a schematic cross-sectional view of the first lower plate of an embodiment of the present application;

[0038] Figure 8 Schematic diagram of the structure of the suspension system according to an embodiment of the present application.

[0039] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0040] 1. Motor assembly; 2. Left bracket; 3. Left elastic bracket assembly; 4. Drive motor left bracket; 5. Right bracket; 6. Right elastic bracket assembly; 7. Drive motor right bracket; 8. Rear suspension assembly; 9. Rear suspension bracket; 10. Left longitudinal beam assembly; 11. Right longitudinal beam assembly; 12. Subframe assembly;

[0041] 41. Mounting plate; 42. First longitudinal reinforcement; 43. Second longitudinal reinforcement; 44. Third longitudinal reinforcement; 45. Transverse reinforcement; 46. Casing; 47. Connecting plate; 48-1. First bolt; 48-2. Second bolt; 48-3. Third bolt;

[0042] 411, top plate; 4111, first hole; 4112, second hole; 4113, third hole; 4114, reinforcing ring; 412, side plate; 4121, first lightening hole; 4122, second lightening hole; 4123, fourth hole; 4124, fifth hole; 4125, sixth hole; 4126, notch;

[0043] 421. The first upper plate; 422. The first middle plate; 423. The first lower plate; 431. The second upper plate; 432. The second lower plate; 441. The third upper plate; 442. The third middle plate; 443. The third lower plate; 471. The seventh hole; 472. The eighth hole; 473. The ninth hole. DETAILED DESCRIPTION

[0044] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] The embodiment of the present application provides a left bracket of a driving motor and a suspension system to solve the problem in the related art that the left bracket of the driving motor has a high risk of damage due to the modality failing to meet the design requirements.

[0046] See also Figures 1 to 7 As shown, the first aspect of the embodiment of the present application provides a left bracket of a driving motor, comprising:

[0047] The mounting plate 41 includes a top plate 411 and a side plate 412. The top plate 411 and the side plate 412 are connected to each other to form an "L"-shaped structure. The top plate 411 is provided with a first through-hole group, and the side plate 412 is provided with a second through-hole group at one end away from the top plate 411.

[0048] The reinforcing ribs include a first longitudinal rib 42, a second longitudinal rib 43, and a third longitudinal rib 44, all of which are vertically fixedly connected to the side panels 412 and whose tops are vertically fixedly connected to the top panel 411. Ends of the first longitudinal rib 42, the second longitudinal rib 43, and the third longitudinal rib 44 away from the top panel 411 all extend toward the second through hole group.

[0049] The connecting plate 47 is parallel to the side plate 412. The first longitudinal rib 42, the second longitudinal rib 43, and the third longitudinal rib 44 are all fixedly connected to the connecting plate 47. A third through hole group is provided on the connecting plate 47, and the third through hole group is coaxial with the second through hole group.

[0050] The left drive motor bracket 4 designed in the embodiment of the present application cleverly utilizes the structural technical principle that "L"-shaped beams, "T"-shaped beams, and "U"-shaped beams have good mechanical properties. The top plate 411 and the side plates 412 are combined into an "L"-shaped beam, and the first longitudinal reinforcement 42 is respectively combined with the top plate 411 and the side plates 412 to form an "L"-shaped beam; the second longitudinal reinforcement 43 is combined with the side plates 412 to form a "T"-shaped beam;

[0051] The third longitudinal reinforcement 44 is combined with the top plate 411 and the side plate 412 to form an L-shaped beam, the connecting plate 47 is combined with the first longitudinal reinforcement 42 and the side plate 412 to form a U-shaped beam, the connecting plate 47 is further combined with the second longitudinal reinforcement 43 and the side plate 412 to form a U-shaped beam, and the connecting plate 47 is further combined with the third longitudinal reinforcement 44 and the side plate 412 to form a U-shaped beam;

[0052] The above-mentioned combined structures of "L"-shaped beams, "T"-shaped beams, "U"-shaped beams, etc. can effectively improve the mode of the connection between the left bracket 4 of the drive motor and the left elastic bracket assembly 3, while reducing the stress of the connection part. The combined structure meets the structural stability of the upper part of the left bracket 4 of the drive motor, improves the overall mode and reduces the stress requirements, while achieving a lightweight design.

[0053] Specifically, the left drive motor bracket 4 includes a mounting plate 41, a first longitudinal rib 42, a second longitudinal rib 43, a third longitudinal rib 44, and a connecting plate 47, all welded together as a single unit. The top plate 411 utilizes a first through-hole group to receive fasteners for connection to the left elastic bracket assembly 3, while the side plate 412 utilizes a second through-hole group to receive fasteners for connection to the motor assembly 1.

[0054] The first longitudinal reinforcement 42, the second longitudinal reinforcement 43, and the third longitudinal reinforcement 44 extend at one end away from the top plate 411 toward the second through hole group, which can lead the force borne by the first through hole group on the top plate to the vicinity of the second through hole group on the side plate 412. Combined with the above-mentioned "L"-shaped beam, "T"-shaped beam, "U"-shaped beam and other combined structures, the overall modal is effectively improved and the stress requirements are reduced, so that the modal of the left bracket 4 of the drive motor can be increased from less than 500Hz to greater than 700Hz, meeting the design requirements, achieving lightweight design, and reducing parts costs.

[0055] That is, the left bracket 4 of the driving motor designed in this application adopts sheet metal welded parts for the design of the suspension bracket while adapting to the technical characteristics of the electric vehicle suspension system, and the root of the suspension bracket adopts a reasonable structure, so that the modal of the bracket can reach above 700Hz, meeting the design requirements while being lightweight and reducing parts costs.

[0056] In some optional embodiments, see Figures 1 to 7As shown, an embodiment of the present application provides a left bracket of a driving motor, in which the lower end of the second longitudinal rib 43 of the left bracket 4 of the driving motor is bent and extended and fixedly connected to the first longitudinal rib 42, a transverse rib 45 fixed to a connecting plate 47 is connected between the second longitudinal rib 43 and the third longitudinal rib 44, and a sleeve 46 connecting the second through hole group and the third through hole group is fixed between the side plate 412 and the connecting plate 47.

[0057] The lower end of the second longitudinal rib 43 in the embodiment of the present application is bent and extended and welded to the first longitudinal rib 42, so that part of the force applied to the first longitudinal rib 42 is decomposed and transferred to the first longitudinal rib 42, thereby avoiding excessive force on the first longitudinal rib 42 and reducing the overall stress requirement of the bracket.

[0058] In addition, a transverse reinforcement 45 is vertically welded between the second longitudinal reinforcement 43 and the third longitudinal reinforcement 44. The transverse reinforcement 45 is vertically welded to the side plate 412 and the connecting plate 47. The transverse reinforcement 45 is respectively combined with the side plate 412, the second longitudinal reinforcement 43, and the third longitudinal reinforcement 44 to form a "T"-shaped beam, which can improve the overall mode and reduce the stress in this area.

[0059] In addition, the sleeve 46 welded and fixed between the side plate 412 and the connecting plate 47 further improves the modal of the structure and reduces the stress of the corresponding parts, and meets the requirements of bearing the tightening torque of the fasteners; the structure of the "U" beam structure plus the sleeve 46 meets the connection part of the drive motor left bracket 4 and the motor assembly 1 ( Figure 2 The structural stability of the middle notch 4126 area is improved, the overall mode is improved and the stress requirements are reduced, while achieving a lightweight design.

[0060] Exemplarily, the left bracket 4 of the driving motor includes a mounting plate 41, a first longitudinal rib 42, a second longitudinal rib 43, a third longitudinal rib 44, a transverse rib 45, a sleeve 46, a connecting plate 47, and a first bolt 48-1, a second bolt 48-2, and a third bolt 48-3 for connecting the left elastic bracket assembly 3, and the whole is connected by welding; the mounting plate 41, the first longitudinal rib 42, the second longitudinal rib 43, the third longitudinal rib 44, the transverse rib 45, the sleeve 46, and the connecting plate 47 can all be formed by stamping, bending and other processes.

[0061] The mounting plate 41 is provided with a top plate 411 for connecting to the left elastic bracket assembly 3 and a side plate 412 for connecting to the motor assembly 1, and the angle between the two is a right angle. The top plate 411 is parallel to the horizontal plane XOY of the vehicle, and the side plate 412 is parallel to the longitudinal plane XOZ of the vehicle. Figure 1 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.

[0062] In some optional embodiments, see Figures 1 to 7As shown, the embodiment of the present application provides a left bracket of a driving motor, wherein the first through hole group of the left bracket 4 of the driving motor includes a first hole 4111, a second hole 4112, and a third hole 4113. The first hole 4111 is located between the first longitudinal rib 42 and the second longitudinal rib 43, the third hole 4113 is located between the second longitudinal rib 43 and the third longitudinal rib 44, and the second hole 4112 is located between the first hole 4111 and the third hole 4113.

[0063] The side plate 412 and the connecting plate 47 are both provided with a notch 4126 for adapting to the motor. The first through-hole group includes a fourth hole 4123 and a fifth hole 4124 located between the first longitudinal rib 42 and the notch 4126, and a sixth hole 4125 located between the second longitudinal rib 43 and the third longitudinal rib 44.

[0064] The third through hole group includes a seventh hole 471 coaxial with the fourth hole 4123 , an eighth hole 472 coaxial with the fifth hole 4124 , and a ninth hole 473 coaxial with the sixth hole 4125 .

[0065] The first hole 4111, the second hole 4112 and the third hole 4113 of the embodiment of the present application are respectively installed with the first bolt 48-1, the second bolt 48-2 and the third bolt 48-3. The function of the first longitudinal reinforcement 42 is to lead the force borne by the first bolt 48-1 to the vicinity of the fourth hole 4123 and the fifth hole 4124. The function of the second longitudinal reinforcement 43 is to lead the force borne by the second bolt 48-2 to the vicinity of the fifth hole 4124. The function of the third longitudinal reinforcement 44 is to lead the force borne by the third bolt 48-3 to the vicinity of the sixth hole 4125, so as to ensure that the overall mode of the bracket can meet the design requirements.

[0066] In some optional embodiments, see Figures 1 to 7 As shown, an embodiment of the present application provides a left bracket of a driving motor, wherein the longitudinal length of the first longitudinal rib 42 of the left bracket 4 of the driving motor is greater than the longitudinal lengths of the second longitudinal rib 43 and the third longitudinal rib 44, the fourth hole 4123 and the fifth hole 4124 are located below the second longitudinal rib 43, and a reinforcing ring 4114 coaxial with the third hole 4113 is fixed on the top plate 411.

[0067] The longitudinal length of the first longitudinal rib 42 in the embodiment of the present application is greater than the longitudinal lengths of the second longitudinal rib 43 and the third longitudinal rib 44, making room for the notch 4126 on the side panel 412. At the same time, since the third hole 4113 is located at the rear in the length direction of the vehicle body, the third hole 4113 is subjected to greater stress after the motor assembly 1 is installed. Therefore, welding a reinforcing ring 4114 at the third hole 4113 can effectively reduce the stress at this location.

[0068] Illustratively, during installation, the first bolt 48 - 1 and the first bolt 48 - 2 pass through the first hole 4111 and the second hole 4112 respectively and are welded to the top plate 411 ; the third bolt 48 - 3 passes through the third hole 4113 and the inner hole of the reinforcement ring 4114 and is welded to the reinforcement ring 4114 .

[0069] In some optional embodiments, see Figures 1 to 7 As shown, an embodiment of the present application provides a left bracket of a driving motor, and the first longitudinal rib 42 of the left bracket 4 of the driving motor includes a first upper plate 421, a first middle plate 422, and a first lower plate 423 welded together in sequence, the lateral width of the first upper plate 421 is greater than the lateral width of the first lower plate 423, the first middle plate 422 is inclined toward the second longitudinal rib 43 and the cross-sectional area gradually decreases from top to bottom, and the connecting plate 47 is welded to the first lower plate 423.

[0070] The first longitudinal rib 42 in this embodiment of the present application directs the force exerted on the first bolt 48-1 toward the vicinity of the fourth and fifth holes 4123 and 4124. The first longitudinal rib 42 is comprised of a first upper plate 421, a first middle plate 422, and a first lower plate 423, secured by welding. The first middle plate 422 is angled, giving the first longitudinal rib 42 a zigzag extension structure, which better distributes and withstands external loads, thereby increasing the strength and rigidity of the product.

[0071] For example, the present application sets the area size of each part of the first longitudinal rib 42 based on the results of the overall modal and strength CAE simulation analysis of the left drive motor bracket 4, as well as the magnitude of the stress distribution. The transverse width of the first upper plate 421 is greater than the transverse width of the first lower plate 423. The first middle plate 422 is inclined toward the second longitudinal rib 43 and its cross-sectional area gradually decreases from top to bottom. The first upper plate 421, the first middle plate 422, and the first lower plate 423 have the same thickness but unequal areas. The relationship in area is: the first upper plate 421 is larger than the first middle plate 422, which is larger than the first lower plate 423.

[0072] The first longitudinal reinforcement 42 is welded to one side of the mounting plate 41, and a certain distance is left from the side of the mounting plate 41 to facilitate the setting of the weld. The first longitudinal reinforcement 42 and the first weight-reducing hole 4121 leave a certain distance to facilitate the setting of the weld; that is, the first longitudinal reinforcement 42 is welded using double-sided welds, which can improve welding performance and reliability.

[0073] In some optional embodiments, see Figures 1 to 7 As shown, an embodiment of the present application provides a left bracket of a driving motor, wherein the second longitudinal rib 43 of the left bracket 4 of the driving motor includes a second upper plate 431 and a second lower plate 432 welded together, the second lower plate 432 is inclined toward the first longitudinal rib 42 and welded together with the first longitudinal rib 42, and the connecting plate 47 is welded together with the second lower plate 432.

[0074] The function of the second longitudinal rib 43 in the embodiment of the present application is to direct the force borne by the second bolt 48-2 to the vicinity of the fifth hole 4124. To prevent the fifth hole 4124 from being borne too much force, the second lower plate 432 is welded to the first longitudinal rib 42. The angle formed by the second upper plate 431 and the second lower plate 432 is approximately 110 degrees, which can decompose part of the force to the fourth hole 4123.

[0075] Specifically, the second longitudinal reinforcement 43 is welded in the middle of the mounting plate 41, and a certain distance is left from the first weight-reducing hole 4121 and the second weight-reducing hole 4122 to facilitate the setting of double-sided welds; the second longitudinal reinforcement 43 is perpendicular to the side plate 412, and the transverse width dimension is equal to the transverse width dimension of the first lower plate 423, which is convenient for welding and fixing the connecting plate 47, while meeting the requirements of the overall modal and strength CAE simulation analysis of the left bracket 4 of the drive motor.

[0076] In some optional embodiments, see Figures 1 to 7 As shown, an embodiment of the present application provides a left bracket of a driving motor, and the third longitudinal rib 44 of the left bracket 4 of the driving motor includes a third upper plate 441, a third middle plate 442, and a third lower plate 443 welded together in sequence, the lateral width of the third upper plate 441 is greater than the lateral width of the third lower plate 443, the third middle plate 442 is inclined toward the second longitudinal rib 43 and the cross-sectional area gradually decreases from top to bottom, and the connecting plate 47 is welded to the third lower plate 443.

[0077] The third longitudinal rib 44 in this embodiment of the present application directs the force exerted on the third bolt 48-3 toward the vicinity of the sixth hole 4125. The third longitudinal rib 44 is comprised of a third upper plate 441, a third middle plate 442, and a third lower plate 443, secured by welding. The third middle plate 442 is angled, giving the third longitudinal rib 44 a zigzag extension structure, which better distributes and withstands external loads, thereby increasing the strength and rigidity of the product.

[0078] For example, the present application sets the area size of each part of the third longitudinal rib 44 based on the results of the overall modal and strength CAE simulation analysis of the left drive motor bracket 4, as well as the magnitude of the stress distribution. The lateral width of the third upper plate 441 is greater than the lateral width of the third lower plate 443. The third middle plate 442 is inclined away from the second longitudinal rib 43 and its cross-sectional area gradually decreases from top to bottom. The third upper plate 441, the third middle plate 442, and the third lower plate 443 have the same thickness but unequal areas. The relationship in area is: the third upper plate 441 is larger than the third middle plate 442, which is larger than the third lower plate 443.

[0079] The third longitudinal reinforcement 44 is welded on the mounting plate 41 and away from the first longitudinal reinforcement 42, and a certain distance is left from the side of the mounting plate 41 to facilitate the setting of the weld. The third longitudinal reinforcement 44 and the second weight-reducing hole 4122 leave a certain distance to facilitate the setting of the weld; that is, the third longitudinal reinforcement 44 is welded with a double-sided weld, which can improve the welding performance and reliability; the transverse reinforcement 45 is welded in the middle of the mounting plate 41, and is welded to the second longitudinal reinforcement 43 and the third longitudinal reinforcement 44, and is perpendicular to the second longitudinal reinforcement 43 and the third longitudinal reinforcement 44, and the end of the transverse reinforcement 45 away from the side plate 412 is flush with the second longitudinal reinforcement 43, which is convenient for welding the connecting plate 47.

[0080] In some optional embodiments, see Figures 1 to 7 As shown, an embodiment of the present application provides a left bracket of a driving motor, wherein a first weight-reducing hole 4121 is provided between the first longitudinal rib 42 and the second longitudinal rib 43 of the left bracket 4 of the driving motor, and a second weight-reducing hole 4122 is provided between the second longitudinal rib 43 and the third longitudinal rib 44, and both the first weight-reducing hole 4121 and the second weight-reducing hole 4122 are located above the connecting plate 47.

[0081] The first weight-reducing hole 4121 of the embodiment of the present application is a polygonal hole, and the second weight-reducing hole 4122 is a quadrilateral hole. Both are based on the results of CAE simulation analysis of the overall modality and strength of the left bracket 4 of the drive motor. The area where the first weight-reducing hole 4121 and the second weight-reducing hole 4122 are located corresponds to the part that contributes less to the improvement of the overall modality and strength of the left bracket 4 of the drive motor, so removing the material of this part has the effect of reducing weight.

[0082] See also Figure 8 As shown, the second aspect of the embodiment of the present application provides a suspension system, including:

[0083] The vehicle frame includes a left longitudinal beam assembly 10 and a right longitudinal beam assembly 11 that are spaced apart from each other, and a subframe assembly 12 that is fixedly connected between the left longitudinal beam assembly 10 and the right longitudinal beam assembly 11;

[0084] The motor assembly 1 is located in front of the subframe assembly 12 and between the left longitudinal beam assembly 10 and the right longitudinal beam assembly 11;

[0085] The suspension unit includes 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;

[0086] A left elastic bracket assembly 3 connected to the left bracket 2, and a right elastic bracket assembly 6 connected to the right bracket 5;

[0087] A left drive motor bracket 4 of any of the above embodiments connected between the left elastic bracket assembly 3 and the motor assembly 1, and a right drive motor bracket 7 connected between the right drive motor elastic bracket assembly 6 and the motor assembly 1;

[0088] 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 .

[0089] The suspension system of the embodiment of the present application consists of a motor assembly 1, a left bracket 2, a left elastic bracket assembly 3, a drive motor left bracket 4, a right bracket 5, a right elastic bracket assembly 6, a drive motor 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.

[0090] The left bracket 2 is mounted on the left longitudinal beam assembly 10 by bolts; the left elastic bracket assembly 3 is mounted on the left bracket 2 by bolts and nuts; the left drive motor bracket 4 is mounted on the motor assembly 1 by bolts and is connected to the left elastic bracket assembly 3.

[0091] The right bracket 5 is installed on the right longitudinal beam assembly 11 by bolts; the right elastic bracket assembly 6 is installed on the right bracket 5 by bolts and nuts; the right bracket 7 of the drive motor is installed on the motor assembly 1 by bolts and is connected to the right elastic bracket assembly 6; the rear suspension assembly 8 is installed on the motor assembly 1 by bolts and is connected to the rear suspension bracket 9.

[0092] The left drive motor bracket 4, the right drive motor 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 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.

[0093] The rear suspension assembly 8 not only supports the motor assembly 1 but also provides connection, shock absorption, and vibration isolation. It connects the motor assembly 1 to the rear suspension bracket 9, attenuating and isolating vibrations and forces transmitted from the motor assembly 1 to the rear suspension bracket 9.

[0094] The suspension system employs the left drive motor bracket 4 of any of the aforementioned embodiments. This bracket features a simple structure, ingenious design, stable structure, good reliability, strong load-bearing capacity, lightweight design, low cost, and ease of assembly. This ensures overall structural stability, improves overall modal characteristics, reduces stress requirements, and achieves a lightweight design, reducing component costs.

[0095] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0096] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0097] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A left bracket of a driving motor, characterized in that: include: A mounting plate (41) comprising a top plate (411) and a side plate (412), wherein the top plate (411) and the side plate (412) are connected to each other to form an "L"-shaped structure, wherein a first through-hole group is provided on the top plate (411), and a second through-hole group is provided on an end of the side plate (412) away from the top plate (411); The reinforcing ribs include a first longitudinal rib (42), a second longitudinal rib (43), and a third longitudinal rib (44), all of which are vertically fixedly connected to the side panels (412) and whose tops are vertically fixedly connected to the top panel (411), wherein ends of the first longitudinal rib (42), the second longitudinal rib (43), and the third longitudinal rib (44) away from the top panel (411) all extend toward the second through hole group; A connecting plate (47) is parallel to the side plate (412), the first longitudinal rib (42), the second longitudinal rib (43), and the third longitudinal rib (44) are all fixedly connected to the connecting plate (47), and a third through hole group is provided on the connecting plate (47), and the third through hole group is coaxial with the second through hole group.

2. The left bracket of the driving motor according to claim 1, characterized in that: The lower end of the second longitudinal rib (43) is bent and extended and fixedly connected to the first longitudinal rib (42); a transverse rib (45) fixed to the connecting plate (47) is connected between the second longitudinal rib (43) and the third longitudinal rib (44); a sleeve (46) connecting the second through hole group and the third through hole group is fixed between the side plate (412) and the connecting plate (47).

3. The left bracket of the driving motor according to claim 1, characterized in that: The first through hole group includes a first hole (4111), a second hole (4112), and a third hole (4113), wherein the first hole (4111) is located between the first longitudinal rib (42) and the second longitudinal rib (43), the third hole (4113) is located between the second longitudinal rib (43) and the third longitudinal rib (44), and the second hole (4112) is located between the first hole (4111) and the third hole (4113).

4. The left bracket of the driving motor according to claim 3, characterized in that: The side plate (412) and the connecting plate (47) are both provided with a notch (4126) for adapting to the motor, and the first through-hole group includes a fourth hole (4123) and a fifth hole (4124) located between the first longitudinal rib (42) and the notch (4126), and a sixth hole (4125) located between the second longitudinal rib (43) and the third longitudinal rib (44); The third through hole group includes a seventh hole (471) coaxial with the fourth hole (4123), an eighth hole (472) coaxial with the fifth hole (4124), and a ninth hole (473) coaxial with the sixth hole (4125).

5. The left bracket of the driving motor according to claim 4, characterized in that: The longitudinal length of the first longitudinal rib (42) is greater than the longitudinal lengths of the second longitudinal rib (43) and the third longitudinal rib (44); the fourth hole (4123) and the fifth hole (4124) are located below the second longitudinal rib (43); and a reinforcing ring (4114) coaxial with the third hole (4113) is fixed on the top plate (411).

6. The left bracket of the driving motor according to claim 1, characterized in that: The first longitudinal rib (42) includes a first upper plate (421), a first middle plate (422), and a first lower plate (423) which are welded in sequence. The transverse width of the first upper plate (421) is greater than the transverse width of the first lower plate (423). The first middle plate (422) is inclined toward the second longitudinal rib (43) and its cross-sectional area gradually decreases from top to bottom. The connecting plate (47) is welded to the first lower plate (423).

7. The left bracket of the driving motor according to claim 1, characterized in that: The second longitudinal rib (43) comprises a second upper plate (431) and a second lower plate (432) connected by welding, the second lower plate (432) is inclined toward the first longitudinal rib (42) and is welded to the first longitudinal rib (42), and the connecting plate (47) is welded to the second lower plate (432).

8. The left bracket of the driving motor according to claim 1, characterized in that: The third longitudinal rib (44) includes a third upper plate (441), a third middle plate (442), and a third lower plate (443) which are welded together in sequence. The transverse width of the third upper plate (441) is greater than the transverse width of the third lower plate (443). The third middle plate (442) is inclined away from the second longitudinal rib (43) and its cross-sectional area gradually decreases from top to bottom. The connecting plate (47) is welded together with the third lower plate (443).

9. The left bracket of the driving motor according to claim 1, characterized in that: A first lightening hole (4121) is provided between the first longitudinal rib (42) and the second longitudinal rib (43), and a second lightening hole (4122) is provided between the second longitudinal rib (43) and the third longitudinal rib (44). Both the first lightening hole (4121) and the second lightening hole (4122) are located above the connecting plate (47).

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

Images