Motor assembly suspension connecting structure

Abstract

The invention relates to a motor assembly suspension connecting structure which comprises a frame unit, the frame unit comprises a left longitudinal beam assembly and a right longitudinal beam assembly, an inner concave reinforcing rib is formed on the side wall, close to the right longitudinal beam assembly, of the front end of the left longitudinal beam assembly in a stamping mode, and a front concave reinforcing rib and a rear concave reinforcing rib are formed on the side wall, close to the left longitudinal beam assembly, of the front end of the right longitudinal beam assembly in a stamping mode; the suspension unit is used for being connected with a motor assembly located between the left longitudinal beam assembly and the right longitudinal beam assembly and comprises a left suspension assembly connected between the motor assembly and the left longitudinal beam assembly and a right suspension assembly connected between the motor assembly and the right longitudinal beam assembly, the left suspension assembly is connected with the inwards-concave stiffening ribs, and the right suspension assembly is connected with the inwards-concave stiffening ribs. And the right suspension assembly is positioned between the front concave reinforcing rib and the rear concave reinforcing rib. The rigidity of the left longitudinal beam assembly and the rigidity of the right longitudinal beam assembly are improved through the inner concave reinforcing ribs, the front concave reinforcing ribs and the rear concave reinforcing ribs, shaking and deformation of the motor assembly and the left suspension assembly are restrained, and the technical effect of the modal of the chassis frame is integrally improved.

Description

Technical Field

[0001] The present application relates to the technical field of chassis frames of electric vehicles, and in particular to a motor assembly suspension connection structure. 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 put a large impact load on the motor suspension system; when an electric drive vehicle encounters bad road conditions such as bumps and potholes, the motor suspension system will also be subjected 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] The chassis frame system is the main body for assembling and connecting vehicle accessories. Its structure is crucial to the peripheral layout and performance of the vehicle. Whether its structural design is reasonable directly affects the vibration and impact strength of the vehicle during driving, and is crucial to the driving comfort of the vehicle.

[0005] The existing chassis frame has a complex structure and poor strength performance. The insufficient rigidity of the chassis frame can easily cause body vibration and roar, which greatly reduces the ride comfort of the vehicle and directly affects people's subjective feelings. It is also unable to effectively limit the degree of freedom of the drive motor, and the body's bending and torsional stiffness, modal, and collision performance will be affected to a certain extent. Summary of the invention

[0006] The embodiment of the present application provides a motor assembly suspension connection structure to solve the problem in the related art that insufficient chassis frame stiffness easily causes vehicle body vibration and roaring, and cannot effectively limit the degree of freedom of the drive motor.

[0007] The embodiment of the present application provides a motor assembly suspension connection structure, including:

[0008] A frame unit, the frame unit comprising a left longitudinal beam assembly and a right longitudinal beam assembly, wherein a concave stiffening rib extending along the length direction of the left longitudinal beam assembly is stamped on a side wall of the front end of the left longitudinal beam assembly close to the right longitudinal beam assembly, and a front concave stiffening rib and a rear concave stiffening rib arranged at intervals along the length direction of the right longitudinal beam assembly are stamped on a side wall of the front end of the right longitudinal beam assembly close to the left longitudinal beam assembly;

[0009] A suspension unit, the suspension unit is used to connect the motor assembly located between the left longitudinal beam assembly and the right longitudinal beam assembly, including a left suspension assembly connected between the motor assembly and the left longitudinal beam assembly, the left suspension assembly is connected to the concave stiffening rib, and a right suspension assembly connected between the motor assembly and the right longitudinal beam assembly, the right suspension assembly is located between the front concave stiffening rib and the rear concave stiffening rib.

[0010] In some embodiments: the left longitudinal beam assembly includes a left longitudinal beam inner plate and a left longitudinal beam outer plate, the left longitudinal beam inner plate and the left longitudinal beam outer plate are welded to each other to form a box beam structure, the left longitudinal beam inner plate includes a left longitudinal beam upper flange plate, a left longitudinal beam web plate and a left longitudinal beam lower flange plate, and the concave stiffener is located on the left longitudinal beam web plate and the left longitudinal beam lower flange plate.

[0011] In some embodiments: the left suspension assembly includes a left bracket connected to the inner plate of the left longitudinal beam, a left elastic bracket assembly connected to the left bracket, and a left bracket connected between the left elastic bracket assembly and the motor assembly, and a left longitudinal beam mounting hole for connecting the left bracket is opened on the inner plate of the left longitudinal beam;

[0012] The left longitudinal beam mounting holes include a first mounting hole and a second mounting hole located on the upper flange plate of the left longitudinal beam and spaced apart, a third mounting hole and a fourth mounting hole located on the web of the left longitudinal beam and spaced apart, and a fifth mounting hole and a sixth mounting hole located on the concave stiffener and spaced apart.

[0013] In some embodiments: the first mounting hole and the second mounting hole are spaced apart along the length direction of the left longitudinal beam upper flange plate and the hole spacing is greater than or equal to 80 mm, the third mounting hole and the fourth mounting hole are spaced apart along the length direction of the left longitudinal beam web plate and the hole spacing is greater than or equal to 160 mm, the fifth mounting hole and the sixth mounting hole are spaced apart along the length direction of the concave stiffener and the hole spacing is greater than or equal to 110 mm.

[0014] In some embodiments: the inner plate of the left longitudinal beam is stamped with reinforcing concave ribs and reinforcing convex ribs, the reinforcing concave ribs and reinforcing convex ribs both extend along the height direction of the web of the left longitudinal beam and are both located in front of the inner concave reinforcing ribs;

[0015] The left longitudinal beam outer plate is stamped with a first reinforcing rib, a second reinforcing rib, a third reinforcing rib, a fourth reinforcing rib and a fifth reinforcing rib in sequence from front to rear along the length direction of the left longitudinal beam outer plate.

[0016] In some embodiments: the right longitudinal beam assembly includes a right longitudinal beam inner plate and a right longitudinal beam outer plate, the right longitudinal beam inner plate and the right longitudinal beam outer plate are welded to each other to form a box beam structure, the right longitudinal beam inner plate includes a right longitudinal beam upper flange plate, a right longitudinal beam web plate and a right longitudinal beam lower flange plate, and the front concave reinforcement ribs and the rear concave reinforcement ribs are both located on the left longitudinal beam web plate and the right longitudinal beam lower flange plate.

[0017] In some embodiments: the right suspension assembly includes a right bracket connected to the right longitudinal beam inner plate, a right elastic bracket assembly connected to the right bracket, and a right bracket connected between the right elastic bracket assembly and the motor assembly, and a right longitudinal beam mounting hole for connecting the right bracket is opened on the right longitudinal beam inner plate, and the right longitudinal beam mounting hole is located between the front concave reinforcement rib and the rear concave reinforcement rib;

[0018] The right longitudinal beam mounting holes include a seventh mounting hole, an eighth mounting hole and a ninth mounting hole located on the upper flange plate of the right longitudinal beam and arranged at intervals, a tenth mounting hole and an eleventh mounting hole located above the web of the right longitudinal beam and arranged at intervals, and a twelfth mounting hole and a thirteenth mounting hole located below the web of the right longitudinal beam and arranged at intervals.

[0019] In some embodiments: the seventh mounting hole, the eighth mounting hole and the ninth mounting hole are spaced apart along the length direction of the right longitudinal beam upper flange plate and the hole spacing is greater than or equal to 90 mm, the tenth mounting hole and the eleventh mounting hole are spaced apart along the length direction of the right longitudinal beam web and the hole spacing is greater than or equal to 145 mm, the twelfth mounting hole and the thirteenth mounting hole are spaced apart along the length direction of the right longitudinal beam web and the hole spacing is greater than or equal to 145 mm.

[0020] In some embodiments: vertical long concave ribs, vertical convex ribs and vertical short concave ribs are stamped on the web of the right longitudinal beam, and the vertical long concave ribs, vertical convex ribs and vertical short concave ribs are arranged at intervals along the length direction of the web of the right longitudinal beam and are all located at the front side of the front concave reinforcing ribs;

[0021] The sixth reinforcing rib, the seventh reinforcing rib, the eighth reinforcing rib, the ninth reinforcing rib and the tenth reinforcing rib are stamped in sequence from front to rear along the length direction of the right longitudinal beam outer plate.

[0022] In some embodiments: a front subframe is connected between the left longitudinal beam assembly and the right longitudinal beam assembly, the front subframe includes a subframe body, a left front support arm and a left rear support arm for connecting the left longitudinal beam assembly are fixedly provided at the left end of the subframe body, and a right front support arm and a right rear support arm for connecting the right longitudinal beam assembly are fixedly provided at the right end of the subframe body;

[0023] The front end of the sub-frame body is welded to a rear suspension bracket, the rear suspension bracket is connected to a rear suspension assembly for connecting a motor assembly, the sub-frame body comprises an upper welding plate assembly and a lower welding plate assembly that are integrally stamped, the upper welding plate assembly and the lower welding plate assembly are welded to each other to form the sub-frame body with a hollow interior;

[0024] A first crossbeam, a second crossbeam, a third crossbeam and a fourth crossbeam which are arranged in sequence from front to rear are connected between the left longitudinal beam assembly and the right longitudinal beam assembly. The first crossbeam is connected to the front ends of the left longitudinal beam assembly and the right longitudinal beam assembly, and the second crossbeam is located above the front subframe.

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

[0026] The embodiment of the present application provides a motor assembly suspension connection structure. Since the motor assembly suspension connection structure of the present application is provided with a frame unit, the frame unit includes a left longitudinal beam assembly and a right longitudinal beam assembly. A concave stiffening rib extending along the length direction of the left longitudinal beam assembly is stamped on the side wall of the right longitudinal beam assembly at the front end of the left longitudinal beam assembly, and a front concave stiffening rib and a rear concave stiffening rib arranged at intervals along the length direction of the right longitudinal beam assembly are stamped on the side wall of the left longitudinal beam assembly at the front end of the right longitudinal beam assembly; a suspension unit is used to connect the motor assembly located between the left longitudinal beam assembly and the right longitudinal beam assembly, including a left suspension assembly connected between the motor assembly and the left longitudinal beam assembly, the left suspension assembly is connected to the concave stiffening rib, and the right suspension assembly is connected between the motor assembly and the right longitudinal beam assembly, and the right suspension assembly is located between the front concave stiffening rib and the rear concave stiffening rib.

[0027] Therefore, the motor assembly suspension connection structure of the present application has a concave stiffening rib extending along the length direction of the left longitudinal beam assembly stamped on the side wall near the right longitudinal beam assembly at the front end of the left longitudinal beam assembly, and a front concave stiffening rib and a rear concave stiffening rib arranged at intervals along the length direction of the right longitudinal beam assembly stamped on the side wall near the left longitudinal beam assembly at the front end of the right longitudinal beam assembly. The concave stiffening rib is used to enhance the strength and mode of the connection position between the left longitudinal beam assembly and the left suspension assembly. The concave stiffening rib improves the rigidity of the left longitudinal beam assembly and suppresses the shaking and deformation of the motor assembly and the left suspension assembly. The front concave stiffening rib and the rear concave stiffening rib are used to enhance the strength and mode of the connection position between the right longitudinal beam assembly and the right suspension assembly. The front concave stiffening rib and the rear concave stiffening rib improve the rigidity of the right longitudinal beam assembly and suppress the shaking and deformation of the motor assembly and the right suspension assembly. There is no need to set up reinforcements separately, and the overall technical effect of the chassis frame mode is improved.

[0028] The motor assembly suspension connection structure of the present application is mainly composed of a rear suspension bracket, a front subframe, and a frame unit; the frame unit is composed of a left longitudinal beam assembly, a right longitudinal beam assembly, a first crossbeam, a second crossbeam, a third crossbeam, and a fourth crossbeam. The layout space of the suspension unit is determined after the positions of the motor assembly, the front subframe, the frame unit, and the transmission shaft are determined in the overall layout design of the vehicle, so the suspension unit is subject to the restrictions of the layout space. The mutual connection between the rear suspension bracket, the front subframe, and the frame unit limits the installation position of the suspension unit, the front subframe limits the position of the suspension unit in the X direction of the vehicle, the left longitudinal beam assembly limits the position of the suspension unit in the Y direction and the Z direction of the vehicle, and the right longitudinal beam assembly limits the position of the suspension unit in the Y direction and the Z direction of the vehicle. Therefore, the motor assembly suspension connection structure further enhances the buffering, vibration isolation, and limiting capabilities of the suspension unit.

[0029] The left longitudinal beam mounting holes of the motor assembly suspension connection structure of the present application include a first mounting hole and a second mounting hole located on the left longitudinal beam upper flange plate and spaced apart, a third mounting hole and a fourth mounting hole located on the left longitudinal beam web and spaced apart, and a fifth mounting hole and a sixth mounting hole located on the concave stiffener and spaced apart. The position and hole spacing of the left longitudinal beam mounting holes can enable the left bracket to obtain the largest possible gripping surface, which is beneficial to reducing the unit stress of the left longitudinal beam inner plate in this area, improving reliability, and also improving the mode of the left longitudinal beam assembly, wherein the fifth mounting hole and the sixth mounting hole can improve the mode by about 30%.

[0030] The right longitudinal beam mounting holes of the motor assembly suspension connection structure of the present application include the seventh mounting hole, the eighth mounting hole and the ninth mounting hole located on the upper flange plate of the right longitudinal beam and spaced apart, the tenth mounting hole and the eleventh mounting hole located above the web of the right longitudinal beam and spaced apart, and the twelfth mounting hole and the thirteenth mounting hole located below the web of the right longitudinal beam and spaced apart. The position and hole spacing of the right longitudinal beam mounting holes can enable the right bracket to obtain the largest possible gripping surface, which is beneficial to reducing the unit stress of the right longitudinal beam inner plate in this area, improving reliability, and also improving the right longitudinal beam assembly mode, wherein the twelfth mounting hole and the thirteenth mounting hole can improve the mode by about 25%. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] Figure 1 This is a schematic structural diagram of a motor assembly suspension connection structure according to an embodiment of the present application;

[0033] Figure 2 This is a schematic structural diagram of a frame unit according to an embodiment of the present application;

[0034] Figure 3 This is a schematic structural diagram of a left longitudinal beam assembly according to an embodiment of the present application;

[0035] Figure 4 This is a schematic structural diagram of the left longitudinal beam inner plate of an embodiment of the present application;

[0036] Figure 5 This is a schematic structural diagram of the left longitudinal beam outer plate of an embodiment of the present application;

[0037] Figure 6 This is a schematic structural diagram of the right longitudinal beam assembly of an embodiment of the present application;

[0038] Figure 7 This is a schematic structural diagram of the right longitudinal beam inner plate of an embodiment of the present application;

[0039] Figure 8 This is a schematic structural diagram of the right longitudinal beam outer plate of an embodiment of the present application;

[0040] Fig. 9 A bottom view of the structure of the front subframe connected between the left longitudinal beam assembly and the right longitudinal beam assembly in the embodiment of the present application;

[0041] Fig.10 It is a schematic structural diagram of the front subframe of an embodiment of the present application.

[0042] Reference numerals:

[0043] 1. Motor assembly; 2. Left bracket; 3. Left elastic bracket assembly; 4. Left bracket; 5. Right bracket; 6. Right elastic bracket assembly; 7. Right bracket; 8. Rear suspension assembly; 9. Rear suspension bracket; 10. Front subframe; 11. Frame unit;

[0044] 101, left front support arm; 102, right front support arm; 103, left rear support arm; 104, right rear support arm; 105, subframe body; 111, left longitudinal beam assembly; 112, right longitudinal beam assembly; 113, first cross beam; 114, second cross beam; 115, third cross beam; 116, fourth cross beam;

[0045] 1051, upper welding plate assembly; 1052, lower welding plate assembly; 1111, left longitudinal beam inner plate; 1112, left longitudinal beam outer plate; 1121, right longitudinal beam inner plate; 1122, right longitudinal beam outer plate; 11111, concave stiffening rib; 11112, reinforced convex rib; 11113, reinforced concave rib; 11114, first mounting hole; 11115, second mounting hole; 11116, third mounting hole; 11117, fourth mounting hole; 11118, fifth mounting hole; 11119, sixth mounting hole;

[0046] 11121, first reinforcing rib; 11122, second reinforcing rib; 11123, third reinforcing rib; 11124, fourth reinforcing rib; 11125, fifth reinforcing rib; 11211, front concave reinforcing rib; 11212, rear concave reinforcing rib; 11213, seventh mounting hole; 11214, eighth mounting hole; 11215, ninth mounting hole; 11216, tenth mounting hole; 11217, eleventh mounting hole; 11218, twelfth mounting hole; 11219, thirteenth mounting hole;

[0047] 11221, sixth reinforcing rib; 11222, seventh reinforcing rib; 11223, eighth reinforcing rib; 11224, ninth reinforcing rib; 11225, tenth reinforcing rib; 11226, vertical long concave rib; 11227, vertical convex rib; 11228, vertical short concave rib. DETAILED DESCRIPTION

[0048] 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.

[0049] The embodiment of the present application provides a motor assembly suspension connection structure, which can solve the problem in the related art that insufficient chassis frame stiffness easily causes vehicle body vibration and roaring, and cannot effectively limit the degree of freedom of the drive motor.

[0050] See also Figures 1 to 8 As shown, an embodiment of the present application provides a motor assembly suspension connection structure, including:

[0051] The frame unit 11 includes a left longitudinal beam assembly 111 and a right longitudinal beam assembly 112 which are spaced apart from each other. A concave stiffening rib 11111 extending along the length direction of the left longitudinal beam assembly 111 is stamped on the side wall at the front end of the left longitudinal beam assembly 111 and close to the right longitudinal beam assembly 112. A front concave stiffening rib 11211 and a rear concave stiffening rib 11212 which are spaced apart from each other and are stamped on the side wall at the front end of the right longitudinal beam assembly 112 and close to the left longitudinal beam assembly 111 are stamped on. 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.

[0052] The suspension unit is used to connect the motor assembly 1 located between the left longitudinal beam assembly 111 and the right longitudinal beam assembly 112. The suspension unit is used to connect the motor assembly 1 to the left longitudinal beam assembly 111 and the right longitudinal beam assembly 112, and to attenuate and isolate the vibration and torque force transmitted from the motor assembly 1 to the frame unit 11. The suspension unit includes a left suspension assembly connected between the motor assembly 1 and the left longitudinal beam assembly 111, the left suspension assembly is connected to the concave stiffening rib 11111, and a right suspension assembly connected between the motor assembly 1 and the right longitudinal beam assembly 112, and the right suspension assembly is located between the front concave stiffening rib 11211 and the rear concave stiffening rib 11212.

[0053] The motor assembly suspension connection structure of the embodiment of the present application has a concave stiffening rib 11111 stamped on the side wall of the front end of the left longitudinal beam assembly 111 near the right longitudinal beam assembly 112, extending along the length direction of the left longitudinal beam assembly 111. The concave stiffening rib 11111 is used to enhance the strength and mode of the connection position between the left longitudinal beam assembly 111 and the left suspension assembly. The concave stiffening rib 11111 improves the rigidity of the left longitudinal beam assembly 111 and suppresses the shaking and deformation of the motor assembly 1 and the left suspension assembly. The left longitudinal beam assembly 111 does not need to be provided with a separate reinforcement, and the overall technical effect of the chassis frame mode is improved.

[0054] A front concave reinforcing rib 11211 and a rear concave reinforcing rib 11212 are stamped on the side wall of the front end of the right longitudinal beam assembly 112 near the left longitudinal beam assembly 111. The front concave reinforcing rib 11211 and the rear concave reinforcing rib 11212 are used to enhance the strength and mode of the connection position between the right longitudinal beam assembly 112 and the right suspension assembly. The front concave reinforcing rib 11211 and the rear concave reinforcing rib 11212 improve the rigidity of the right longitudinal beam assembly 112 and suppress the shaking and deformation of the motor assembly 1 and the right suspension assembly. The right longitudinal beam assembly 112 does not need to be provided with a separate reinforcement, which improves the technical effect of the chassis frame mode as a whole.

[0055] In some alternative embodiments: See Figures 3 to 5 As shown, the embodiment of the present application provides a motor assembly suspension connection structure, wherein the left longitudinal beam assembly 111 of the motor assembly suspension connection structure includes a left longitudinal beam inner plate 1111 and a left longitudinal beam outer plate 1112. The left longitudinal beam inner plate 1111 and the left longitudinal beam outer plate 1112 are welded to each other to form a box beam structure, and the left longitudinal beam inner plate 1111 includes a left longitudinal beam upper flange plate, a left longitudinal beam web plate and a left longitudinal beam lower flange plate, and the left longitudinal beam upper flange plate, the left longitudinal beam web plate and the left longitudinal beam lower flange plate are connected to each other to form a left longitudinal beam inner plate 1111 with a "J"-shaped cross section, and the concave stiffener 11111 is located on the left longitudinal beam web plate and the left longitudinal beam lower flange plate.

[0056] The left suspension assembly includes a left bracket 2 connected to the left longitudinal beam inner plate 1111, a left elastic bracket assembly 3 connected to the left bracket 2, and a left bracket 4 connected between the left elastic bracket assembly 3 and the motor assembly 1. The left longitudinal beam inner plate 1111 is provided with a left longitudinal beam mounting hole for connecting the left bracket 2. The left longitudinal beam mounting holes include a first mounting hole 11114 and a second mounting hole 11115 located on the left longitudinal beam upper flange plate and spaced apart, a third mounting hole 11116 and a fourth mounting hole 11117 located on the left longitudinal beam web and spaced apart, and a fifth mounting hole 11118 and a sixth mounting hole 11119 located on the concave stiffener 11111 and spaced apart.

[0057] The first mounting hole 11114 and the second mounting hole 11115 are arranged at intervals along the length direction of the left longitudinal beam upper flange plate, and the hole spacing is greater than or equal to 80 mm. The third mounting hole 11116 and the fourth mounting hole 11117 are arranged at intervals along the length direction of the left longitudinal beam web plate, and the hole spacing is greater than or equal to 160 mm. The fifth mounting hole 11118 and the sixth mounting hole 11119 are arranged at intervals along the length direction of the concave stiffening rib 11111, and the hole spacing is greater than or equal to 110 mm. The above-mentioned positions and hole spacings of the left longitudinal beam mounting holes can enable the left bracket 2 to obtain the largest possible gripping surface, which is beneficial to reducing the unit stress of the left longitudinal beam inner plate 1111 in this area and improving reliability. It can also improve the mode of the left longitudinal beam assembly 111, wherein the fifth mounting hole 11118 and the sixth mounting hole 11119 can improve the mode by about 30%.

[0058] In some alternative embodiments: See Figure 1 , Figures 3 to 5 As shown, the embodiment of the present application provides a motor assembly suspension connection structure, wherein a reinforcing concave rib 11113 and a reinforcing convex rib 11112 are stamped on the left longitudinal beam inner plate 1111 of the motor assembly suspension connection structure, and the reinforcing concave rib 11113 and the reinforcing convex rib 11112 both extend along the height direction of the left longitudinal beam web and are both located at the front side of the inner concave reinforcing rib 11111. A first reinforcing rib 11121, a second reinforcing rib 11122, a third reinforcing rib 11123, a fourth reinforcing rib 11124 and a fifth reinforcing rib 11125 are stamped in sequence from front to back along the length direction of the left longitudinal beam outer plate 1112.

[0059] In the embodiment of the present application, a reinforcing concave rib 11113 and a reinforcing convex rib 11112 are stamped on the left longitudinal beam inner plate 1111. Two reinforcing convex ribs 11112 are provided and are respectively located on both sides of the reinforcing concave rib 11113. The reinforcing concave rib 11113 and the reinforcing convex rib 11112 are used to enhance the strength and modality of the front end of the left longitudinal beam inner plate 1111. Three first reinforcing ribs 11121 are provided on the left longitudinal beam outer plate 1112. The three first reinforcing ribs 11121 are arranged parallel to each other and at intervals. The three first reinforcing ribs 11121 extend along the height direction of the left longitudinal beam outer plate 1112. The second reinforcing rib 11122, the third reinforcing rib 11123, the fourth reinforcing rib 11124 and the fifth reinforcing rib 11125 all extend along the length direction of the left longitudinal beam outer plate 1112.

[0060] In some alternative embodiments: See Figure 1 , Figures 6 to 8 As shown, the embodiment of the present application provides a motor assembly suspension connection structure, wherein the right longitudinal beam assembly 112 of the motor assembly suspension connection structure includes a right longitudinal beam inner plate 1121 and a right longitudinal beam outer plate 1122, which are welded to each other to form a box beam structure. The right longitudinal beam inner plate 1121 includes a right longitudinal beam upper flange plate, a right longitudinal beam web plate and a right longitudinal beam lower flange plate, which are connected to each other to form a right longitudinal beam inner plate 1121 with a "J"-shaped cross section, and the front concave reinforcing ribs 11211 and the rear concave reinforcing ribs 11212 are both located on the left longitudinal beam web plate and the right longitudinal beam lower flange plate.

[0061] The right suspension assembly includes a right bracket 5 connected to the right longitudinal beam inner plate 1121, a right elastic bracket assembly 6 connected to the right bracket 5, and a right bracket 7 connected between the right elastic bracket assembly 6 and the motor assembly 1. The right longitudinal beam inner plate 1121 is provided with a right longitudinal beam mounting hole for connecting the right bracket 5, and the right longitudinal beam mounting hole is located between the front concave reinforcing rib 11211 and the rear concave reinforcing rib 11212. The right longitudinal beam mounting holes include the seventh mounting hole 11213, the eighth mounting hole 11214 and the ninth mounting hole 11215 located on the right longitudinal beam upper flange plate and arranged at intervals, the tenth mounting hole 11216 and the eleventh mounting hole 11217 located above the right longitudinal beam web and arranged at intervals, and the twelfth mounting hole 11218 and the thirteenth mounting hole 11219 located below the right longitudinal beam web and arranged at intervals.

[0062] The seventh mounting hole 11213, the eighth mounting hole 11214 and the ninth mounting hole 11215 are arranged at intervals along the length direction of the right longitudinal beam upper flange plate, and the hole spacing is greater than or equal to 90 mm. The tenth mounting hole 11216 and the eleventh mounting hole 11217 are arranged at intervals along the length direction of the right longitudinal beam web plate, and the hole spacing is greater than or equal to 145 mm. The twelfth mounting hole 11218 and the thirteenth mounting hole 11219 are arranged at intervals along the length direction of the right longitudinal beam web plate, and the hole spacing is greater than or equal to 145 mm. The above-mentioned right longitudinal beam mounting hole positions and hole spacing settings can enable the right bracket 5 to obtain the largest possible gripping surface, which is conducive to reducing the unit stress of the right longitudinal beam inner plate 1121 in this area and improving reliability. It can also improve the modal of the right longitudinal beam assembly 112, wherein the twelfth mounting hole 11218 and the thirteenth mounting hole 11219 can improve the modal by about 25%.

[0063] In some alternative embodiments: See Figures 6 to 8 As shown, the embodiment of the present application provides a motor assembly suspension connection structure, and a vertical long concave rib 11226, a vertical convex rib 11227 and a vertical short concave rib 11228 are stamped on the right longitudinal beam web of the motor assembly suspension connection structure. The vertical long concave rib 11226, the vertical convex rib 11227 and the vertical short concave rib 11228 are arranged at intervals along the length direction of the right longitudinal beam web and are all located in front of the front concave reinforcing rib 11211. The sixth reinforcing rib 11221, the seventh reinforcing rib 11222, the eighth reinforcing rib 11223, the ninth reinforcing rib 11224 and the tenth reinforcing rib 11225 are stamped in sequence from front to back along the length direction of the right longitudinal beam outer plate 1122.

[0064] In the embodiment of the present application, vertical long concave ribs 11226, vertical convex ribs 11227 and vertical short concave ribs 11228 are stamped on the right longitudinal beam inner plate 1121. The vertical long concave ribs 11226, vertical convex ribs 11227 and vertical short concave ribs 11228 are used to enhance the strength and modality of the front end of the right longitudinal beam inner plate 1121. There are three sixth reinforcing ribs 11221 on the right longitudinal beam outer plate 1122. The three sixth reinforcing ribs 11221 are arranged in parallel with each other and at intervals. The three sixth reinforcing ribs 11221 extend along the height direction of the right longitudinal beam outer plate 1122. The seventh reinforcing rib 11222, the eighth reinforcing rib 11223, the ninth reinforcing rib 11224 and the tenth reinforcing rib 11225 all extend along the length direction of the right longitudinal beam outer plate 1122.

[0065] In some alternative embodiments: See Figure 1 , Figure 2 , Fig. 9 and Fig.10As shown, the embodiment of the present application provides a motor assembly suspension connection structure, wherein a front subframe 10 is connected between the left longitudinal beam assembly 111 and the right longitudinal beam assembly 112 of the motor assembly suspension connection structure. The front subframe includes a subframe body 105, a left front support arm 101 and a left rear support arm 103 for connecting the left longitudinal beam assembly 111 are fixedly provided at the left end of the subframe body 105, and a right front support arm 102 and a right rear support arm 104 for connecting the right longitudinal beam assembly 112 are fixedly provided at the right end of the subframe body 105. The front subframe 10 adopts a stamped and welded sheet metal structure, with integrated functions and lightweight structure, and provides support for the installation of parts of the suspension system, steering system, and suspension system.

[0066] The left front support arm 101, the left rear support arm 103, the right front support arm 102 and the right rear support arm 104 fix the sub-frame body 105 to the bottom of the left longitudinal beam assembly 111 and the right longitudinal beam assembly 112. The front end of the sub-frame body 105 is welded to the rear suspension bracket 9, and the rear suspension bracket 9 is connected to the rear suspension assembly 8 for connecting the motor assembly 1. The sub-frame body 105 includes an upper welding plate assembly 1051 formed by integral stamping and an lower welding plate assembly 1052 formed by integral stamping. The upper welding plate assembly 1051 and the lower welding plate assembly 1052 are welded to each other to form the sub-frame body 105 with a hollow interior.

[0067] A first crossbeam 113, a second crossbeam 114, a third crossbeam 115 and a fourth crossbeam 116 are connected between the left longitudinal beam assembly 111 and the right longitudinal beam assembly 112, and are arranged in sequence from front to back. The first crossbeam 113, the second crossbeam 114, the third crossbeam 115 and the fourth crossbeam 116 are parallel to each other, and the length direction is parallel to the Y-axis direction. The first crossbeam 113 is connected to the front end of the left longitudinal beam assembly 111 and the right longitudinal beam assembly 112, and the second crossbeam 114 is located above the front subframe 10. The first crossbeam 113, the second crossbeam 114, the third crossbeam 115 and the fourth crossbeam 116 are used to enhance the connection strength between the left longitudinal beam assembly 111 and the right longitudinal beam assembly 112, and enhance the structural strength of the chassis frame in a side collision.

[0068] The motor assembly suspension connection structure of the embodiment of the present application is mainly composed of a rear suspension bracket 9, a front subframe 10, a frame unit 11 and a suspension unit; the frame unit 11 is composed of a left longitudinal beam assembly 111, a right longitudinal beam assembly 112, a first cross beam 113, a second cross beam 114, a third cross beam 115 and a fourth cross beam 116. The suspension unit is carried out after the positions of the motor assembly 1, the front subframe 10, the frame unit 11 and the transmission shaft are determined in the overall layout design of the whole vehicle, so the suspension unit is subject to the restrictions of the layout space.

[0069] The interconnection between the rear suspension bracket 9, the front subframe 10, and the frame unit 11 defines the installation positions of the left elastic bracket assembly 3, the right elastic bracket assembly 6, and the rear suspension assembly 8. The front subframe 10 limits the positions of the left elastic bracket assembly 3, the right elastic bracket assembly 6, and the rear suspension assembly 8 in the X direction of the vehicle, the left longitudinal beam assembly 111 limits the positions of the left elastic bracket assembly 3, the right elastic bracket assembly 6, and the rear suspension assembly 8 in the Y and Z directions of the vehicle, and the right longitudinal beam assembly 112 limits the positions of the left elastic bracket assembly 3, the right elastic bracket assembly 6, and the rear suspension assembly 8 in the Y and Z directions of the vehicle.

[0070] 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.

[0071] 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.

[0072] 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 motor assembly suspension connection structure, characterized in that: include: A vehicle frame unit (11), the vehicle frame unit (11) comprising a left longitudinal beam assembly (111) and a right longitudinal beam assembly (112); a concave stiffening rib (11111) extending along the length direction of the left longitudinal beam assembly (111) is stamped on a side wall at a front end of the left longitudinal beam assembly (111) close to the right longitudinal beam assembly (112); a front concave stiffening rib (11211) and a rear concave stiffening rib (11212) arranged at intervals along the length direction of the right longitudinal beam assembly (112) are stamped on a side wall at a front end of the right longitudinal beam assembly (112) close to the left longitudinal beam assembly (111); A suspension unit, the suspension unit being used to connect a motor assembly (1) located between a left longitudinal beam assembly (111) and a right longitudinal beam assembly (112), comprising a left suspension assembly connected between the motor assembly (1) and the left longitudinal beam assembly (111), the left suspension assembly being connected to an inner concave stiffening rib (11111), and a right suspension assembly connected between the motor assembly (1) and the right longitudinal beam assembly (112), the right suspension assembly being located between a front concave stiffening rib (11211) and a rear concave stiffening rib (11212).

2. The motor assembly suspension connection structure according to claim 1, characterized in that: The left longitudinal beam assembly (111) comprises a left longitudinal beam inner plate (1111) and a left longitudinal beam outer plate (1112), wherein the left longitudinal beam inner plate (1111) and the left longitudinal beam outer plate (1112) are welded to each other to form a box beam structure, wherein the left longitudinal beam inner plate (1111) comprises a left longitudinal beam upper flange plate, a left longitudinal beam web plate and a left longitudinal beam lower flange plate, and the concave stiffener (11111) is located on the left longitudinal beam web plate and the left longitudinal beam lower flange plate.

3. A motor assembly suspension connection structure as claimed in claim 2, characterized in that: The left suspension assembly comprises a left bracket (2) connected to the left longitudinal beam inner plate (1111), a left elastic bracket assembly (3) connected to the left bracket (2), and a left bracket (4) connected between the left elastic bracket assembly (3) and the motor assembly (1); the left longitudinal beam inner plate (1111) is provided with a left longitudinal beam mounting hole for connecting the left bracket (2); The left longitudinal beam mounting holes include a first mounting hole (11114) and a second mounting hole (11115) located on the upper flange plate of the left longitudinal beam and spaced apart, a third mounting hole (11116) and a fourth mounting hole (11117) located on the web plate of the left longitudinal beam and spaced apart, and a fifth mounting hole (11118) and a sixth mounting hole (11119) located on the concave stiffening rib (11111) and spaced apart.

4. A motor assembly suspension connection structure as claimed in claim 3, characterized in that: The first mounting hole (11114) and the second mounting hole (11115) are arranged at intervals along the length direction of the left longitudinal beam upper flange plate, and the hole spacing is greater than or equal to 80 mm, the third mounting hole (11116) and the fourth mounting hole (11117) are arranged at intervals along the length direction of the left longitudinal beam web plate, and the hole spacing is greater than or equal to 160 mm, and the fifth mounting hole (11118) and the sixth mounting hole (11119) are arranged at intervals along the length direction of the concave stiffening rib (11111), and the hole spacing is greater than or equal to 110 mm.

5. The motor assembly suspension connection structure according to claim 2, characterized in that: A reinforcing concave rib (11113) and a reinforcing convex rib (11112) are punched on the inner plate (1111) of the left longitudinal beam, and the reinforcing concave rib (11113) and the reinforcing convex rib (11112) both extend along the height direction of the web plate of the left longitudinal beam and are both located at the front side of the inner concave reinforcing rib (11111); A first reinforcing rib (11121), a second reinforcing rib (11122), a third reinforcing rib (11123), a fourth reinforcing rib (11124) and a fifth reinforcing rib (11125) are stamped in sequence from front to back along the length direction of the left longitudinal beam outer plate (1112).

6. The motor assembly suspension connection structure according to claim 1, characterized in that: The right longitudinal beam assembly (112) includes a right longitudinal beam inner plate (1121) and a right longitudinal beam outer plate (1122), the right longitudinal beam inner plate (1121) and the right longitudinal beam outer plate (1122) are welded to each other to form a box beam structure, the right longitudinal beam inner plate (1121) includes a right longitudinal beam upper flange plate, a right longitudinal beam web plate and a right longitudinal beam lower flange plate, and the front concave reinforcing rib (11211) and the rear concave reinforcing rib (11212) are both located on the left longitudinal beam web plate and the right longitudinal beam lower flange plate.

7. The motor assembly suspension connection structure according to claim 6, characterized in that: The right suspension assembly comprises a right bracket (5) connected to the right longitudinal beam inner plate (1121), a right elastic bracket assembly (6) connected to the right bracket (5), and a right bracket (7) connected between the right elastic bracket assembly (6) and the motor assembly (1); a right longitudinal beam mounting hole for connecting the right bracket (5) is provided on the right longitudinal beam inner plate (1121), and the right longitudinal beam mounting hole is located between the front concave reinforcing rib (11211) and the rear concave reinforcing rib (11212); The right longitudinal beam mounting holes include a seventh mounting hole (11213), an eighth mounting hole (11214) and a ninth mounting hole (11215) located on the upper flange plate of the right longitudinal beam and spaced apart, a tenth mounting hole (11216) and an eleventh mounting hole (11217) located above the web of the right longitudinal beam and spaced apart, and a twelfth mounting hole (11218) and a thirteenth mounting hole (11219) located below the web of the right longitudinal beam and spaced apart.

8. The motor assembly suspension connection structure according to claim 7, characterized in that: The seventh mounting hole (11213), the eighth mounting hole (11214) and the ninth mounting hole (11215) are arranged at intervals along the length direction of the right longitudinal beam upper flange plate, and the hole spacing is greater than or equal to 90 mm, the tenth mounting hole (11216) and the eleventh mounting hole (11217) are arranged at intervals along the length direction of the right longitudinal beam web plate, and the hole spacing is greater than or equal to 145 mm, and the twelfth mounting hole (11218) and the thirteenth mounting hole (11219) are arranged at intervals along the length direction of the right longitudinal beam web plate, and the hole spacing is greater than or equal to 145 mm.

9. The motor assembly suspension connection structure according to claim 6, characterized in that: The right longitudinal beam web is stamped with vertical long concave ribs (11226), vertical convex ribs (11227) and vertical short concave ribs (11228), the vertical long concave ribs (11226), vertical convex ribs (11227) and vertical short concave ribs (11228) are arranged at intervals along the length direction of the right longitudinal beam web and are all located at the front side of the front concave reinforcing rib (11211); A sixth reinforcing rib (11221), a seventh reinforcing rib (11222), an eighth reinforcing rib (11223), a ninth reinforcing rib (11224) and a tenth reinforcing rib (11225) are stamped in sequence from front to back along the length direction of the right longitudinal beam outer plate (1122).

10. The motor assembly suspension connection structure according to claim 1, characterized in that: A front subframe (10) is connected between the left longitudinal beam assembly (111) and the right longitudinal beam assembly (112), and the front subframe (10) comprises a subframe body (105), a left front support arm (101) and a left rear support arm (103) for connecting the left longitudinal beam assembly (111) are fixedly provided at the left end of the subframe body (105), and a right front support arm (102) and a right rear support arm (104) for connecting the right longitudinal beam assembly (112) are fixedly provided at the right end of the subframe body (105); The front end of the sub-frame body (105) is welded to a rear suspension bracket (9), and the rear suspension bracket (9) is connected to a rear suspension assembly (8) for connecting to a motor assembly (1). The sub-frame body (105) comprises an upper welding plate assembly (1051) formed by integral stamping and an lower welding plate assembly (1052) formed by integral stamping. The upper welding plate assembly (1051) and the lower welding plate assembly (1052) are welded to each other to form the sub-frame body (105) with a hollow interior. A first crossbeam (113), a second crossbeam (114), a third crossbeam (115) and a fourth crossbeam (116) which are arranged in sequence from front to back and spaced apart from each other are connected between the left longitudinal beam assembly (111) and the right longitudinal beam assembly (112); the first crossbeam (113) is connected to the front ends of the left longitudinal beam assembly (111) and the right longitudinal beam assembly (112); and the second crossbeam (114) is located above the front subframe (10).

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