A semi-suspension arm, a suspension arm and a macpherson suspension

Abstract

The application discloses a half subframe of a McPherson suspension, comprising an upper piece (11) and a lower piece (12), in the longitudinal section of the half subframe (1), the upper piece (11) and the lower piece (12) each comprise a first section, the two first sections are mutually attached and fixedly integrated, and a reinforcing plate (13) is arranged, one end of the reinforcing plate (13) is fixedly connected with the upper piece (11), and at least a partial area of the reinforcing plate (13) is oppositely arranged with at least a partial area of the first section to form a containing space (B) for containing and fixing an engine suspension support arm (01). The application further provides a subframe of a McPherson suspension and a McPherson suspension. The application can effectively improve the vibration isolation and noise reduction effect of the whole vehicle without increasing the overall weight, thereby improving the NVH performance of the whole vehicle and improving the driving comfort.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically to a half-frame, subframe, and MacPherson suspension of a MacPherson strut. Background Technology

[0002] The subframe, serving as a load-bearing platform, forms the main structure of the MacPherson strut suspension. In existing technology, the traditional subframe's semi-subframe, such as... Figure 1 As shown, including the upper piece 11' and the lower piece ', and the reinforcing plate located between the two, serving as a connector. ', Upper part 11', Lower part 'and reinforcing plate One end forms a cavity, and the other end forms a C-shaped mounting area for mounting the engine suspension arm. (Lower section) The area enclosed by the C-shaped mounting zone is equipped with mounting points for fixed connection to the engine mounting arms.

[0003] Since most engines currently in use are turbocharged engines, characterized by high speed and high torque, they generate significant noise during operation. Furthermore, in existing semi-subframe technology, the lower plate used to secure the engine mounts... 'Poor vibration isolation effect, and the reinforcing plate The horizontal spacing between the upper and lower panels prevents them from effectively isolating engine noise, resulting in poor NVH performance of the entire vehicle.

[0004] Therefore, how to provide a semi-subframe for MacPherson strut suspension to improve vibration isolation and noise reduction, enhance overall vehicle NVH performance, and improve driving comfort remains a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a semi-subframe for a MacPherson strut suspension that improves vibration isolation and noise reduction, enhances overall vehicle NVH performance, and improves driving comfort without increasing overall weight.

[0006] To solve the above-mentioned technical problems, the present invention provides a half-frame of MacPherson strut suspension, including an upper piece and a lower piece. In the longitudinal section of the half-frame, both the upper piece and the lower piece include a first section. The two first sections are fitted together and fixed together. The half-frame also includes a reinforcing plate. One end of the reinforcing plate is fixedly connected to the upper piece. At least a portion of the reinforcing plate is arranged opposite to at least a portion of the first section to form a receiving space for accommodating and fixing the engine mount arm.

[0007] The present invention relates to a MacPherson strut suspension semi-frame, which improves the area for fixing the engine mount arm. Specifically, the first sections of the upper and lower sections are fixed together to form a lower fixing part. Compared with the prior art, without increasing the overall weight of the semi-frame, the thickness of the lower fixing part is increased, the stiffness is significantly increased, and the vibration isolation effect is significantly enhanced. At the same time, a reinforcing plate is added and fixedly connected to the upper section. The reinforcing plate and the lower fixing part form a closed receiving space at one end, which not only fixes the engine mount arm but also effectively isolates engine noise.

[0008] In summary, the semi-subframe of the MacPherson suspension of this invention can effectively improve the vibration isolation effect of the whole vehicle, significantly improve the NVH performance of the whole vehicle, and improve passenger comfort.

[0009] Optionally, within the longitudinal section of the half-frame, both the upper and lower sections include a second section connected to the first section, the second section extending in the opposite direction to the reinforcing plate, and the two second sections enclosing each other to form a cavity.

[0010] Optionally, the reinforcing plate is overlapped and fixed to the second section of the upper piece.

[0011] Optionally, the reinforcing plate is overlapped and fixed to the middle of the first section of the upper piece, and the end where the first section connects to the second section forms a support part for supporting the power assist motor.

[0012] Optionally, in the first section of the upper piece, except for the area opposite to the reinforcing plate, weight reduction holes are provided;

[0013] Alternatively, in the first section of the lower piece, the area forming the support portion is provided with weight-reducing holes.

[0014] Optionally, the reinforcing plate includes a sequentially connected overlapping section, an upwardly extending transition section, and a horizontal section, wherein the horizontal section is used to fix the engine suspension arm, and the transition section is provided with weight reduction holes.

[0015] Optionally, the area of ​​the first section forming the accommodating space is provided with a mounting hole for fixing the engine mounting arm, and the lower piece is also provided with a plug welding hole surrounding the mounting hole. In the upper piece and the lower piece, the area forming the fixing part is fixed by plug welding.

[0016] Optionally, the plug weld hole includes three arc-shaped plug weld holes surrounding the suspension mounting hole, and one straight plug weld hole.

[0017] The present invention also provides a subframe for a MacPherson strut suspension, including the aforementioned half-subframe of the MacPherson strut suspension.

[0018] The subframe of the MacPherson strut suspension of the present invention includes the aforementioned half-subframe of the MacPherson strut suspension, and therefore has the same technical effects as the aforementioned half-subframe of the MacPherson strut suspension, which will not be repeated here.

[0019] Optionally, it also includes a crossbeam, a front anti-collision crossbeam, and two longitudinal beams, wherein the longitudinal beams are fixedly connected in sequence to the corresponding ends of the half-subframe, the crossbeam, and the front anti-collision crossbeam, and the width of the connection end between the two longitudinal beams and the front anti-collision crossbeam is greater than the width of the connection end between the two longitudinal beams and the half-subframe.

[0020] Optionally, the front anti-collision beam includes a beam body, two reinforcing members and two energy-absorbing members. The two reinforcing members are respectively fitted onto the two transverse ends of the beam body. One end of the energy-absorbing member is fixedly connected to one of the reinforcing members, and the other end is fixedly connected to the longitudinal beam at the corresponding end. The wall surface of the energy-absorbing member is provided with multiple guide grooves extending laterally for bending and deformation during a collision.

[0021] Optionally, the crossbeam body is an arc-shaped structure that protrudes away from the half-frame, and its cross-section is a U-shape facing away from the half-frame.

[0022] Alternatively, the beam body may be formed by roll forming.

[0023] Optionally, the longitudinal beam includes an upper longitudinal beam section, a lower longitudinal beam section, and an intermediate reinforcing plate, wherein the intermediate reinforcing plate is disposed between the upper and lower longitudinal beam sections near one end of the half-frame.

[0024] Optionally, it also includes two first reinforcing members, one end of which is connected to the end of the half-frame facing away from the longitudinal beam, and the other end is connected to the vehicle body. It also includes a battery anti-collision crossbeam, the two ends of which are fixedly connected to the two first reinforcing members.

[0025] Optionally, it also includes two second reinforcing members, one end of which is connected to the lateral end of the upper piece, and the other end is fixedly connected to the vehicle body.

[0026] The present invention also provides a MacPherson strut suspension, including the subframe of the aforementioned MacPherson strut suspension.

[0027] The MacPherson strut suspension of the present invention includes the subframe of the aforementioned MacPherson strut suspension, and therefore has the same technical effects as the subframe of the aforementioned MacPherson strut suspension, which will not be repeated here. Attached Figure Description

[0028] Figure 1 This is a longitudinal cross-sectional view of a pre-existing subframe.

[0029] Figure 2 This is a schematic diagram of the structure of a first embodiment of the MacPherson strut suspension provided by the present invention;

[0030] Figure 3 for Figure 2 A structural diagram of the MacPherson strut suspension from another angle;

[0031] Figure 4 for Figure 2 Front view of MacPherson strut suspension;

[0032] Figure 5 for Figure 2 A schematic diagram of the subframe structure of the MacPherson strut suspension;

[0033] Figure 6 for Figure 5 A breakdown diagram of the subframe of the MacPherson strut suspension;

[0034] Figure 7 for Figure 5 Schematic diagram of the middle half of the subframe;

[0035] Figure 8 for Figure 7 A breakdown diagram of a half-frame;

[0036] Figure 9 for Figure 2 A partial schematic diagram of the half-frame of the MacPherson strut suspension;

[0037] Figure 10 for Figure 9 Longitudinal cross-sectional view of the half-frame of the MacPherson strut suspension;

[0038] Figure 11 for Figure 9 A simplified longitudinal section diagram of the half-frame of the MacPherson strut suspension;

[0039] Figure 12 for Figure 9 A bottom view of the half-frame of the MacPherson strut suspension;

[0040] Figure 13 for Figure 2 Force diagram of MacPherson strut suspension during a collision;

[0041] Figure 14 This is a schematic diagram of the second embodiment of the MacPherson strut suspension provided by the present invention;

[0042] Figure 15 for Figure 14 A structural diagram of the MacPherson strut suspension from another angle;

[0043] Figure 16 for Figure 14 Front view of MacPherson strut suspension;

[0044] Figure 17 for Figure 14A schematic diagram of the subframe structure of the MacPherson strut suspension;

[0045] Figure 18 for Figure 17 A breakdown diagram of the subframe of the MacPherson strut suspension;

[0046] Figure 19 for Figure 17 Schematic diagram of the middle half of the subframe;

[0047] Figure 20 for Figure 19 A breakdown diagram of a half-frame;

[0048] Figure 21 for Figure 14 A partial schematic diagram of the half-frame of the MacPherson strut suspension;

[0049] Figure 22 for Figure 21 Longitudinal cross-sectional view of the half-frame of the MacPherson strut suspension;

[0050] Figure 23 for Figure 21 A simplified longitudinal section diagram of the half-frame of the MacPherson strut suspension;

[0051] Figure 24 for Figure 21 A bottom view of the half-frame of the MacPherson strut suspension;

[0052] Figure 25 for Figure 14 Force diagram of MacPherson strut suspension during a collision;

[0053] Figure 26 These are the split diagrams of the components other than the subframe in two types of MacPherson strut suspension subframes;

[0054] Figure 27 This is a schematic diagram of the battery anti-collision beam in the subframe of two MacPherson suspensions after being subjected to stress.

[0055] Figure 28 The diagram shows the modal analysis structure of the two MacPherson strut suspensions of this invention and the MacPherson strut suspension of the prior art.

[0056] Figure 29 This is a comparison chart of the stiffness performance of the two MacPherson strut suspensions of this invention and the existing MacPherson strut suspension.

[0057] in, Figure 1 The annotations in the attached figures are explained as follows:

[0058] 11' - Top piece; 12' - Bottom piece; 13' - Reinforcing plate.

[0059] in, Figures 2 to 27 The annotations in the attached figures are explained as follows:

[0060] 1-Half-frame; 11-Upper section; 12-Lower section; 13-Reinforcing plate; 13a-Overlap section; 13b-Transition section; 13c-Horizontal section; 14-Steering gear mounting sleeve; 15-Stabilizer bar mounting sleeve; 16-Stabilizer bar mounting reinforcing plate; 17-Cavity reinforcing plate; 18-Longitudinal beam connecting bracket; 19-Body mounting sleeve;

[0061] A - Cavity; B - Accommodation space; O - Suspension mounting hole; b - Support part; c - Arc-shaped plug weld hole; d - Straight plug weld hole;

[0062] 2-Crossbeam; 3-Front anti-collision crossbeam; 31-Crossbeam body; 32-Reinforcing member; 33-Energy-absorbing member; 4-Longitudinal beam; 41-Upper longitudinal beam; 42-Lower longitudinal beam; 43-Intermediate reinforcing plate; 5-First reinforcing member; 6-Battery anti-collision crossbeam; 7-Second reinforcing member; 8-Front lower control arm; 9-Steering gear; 10-Stabilizer bar;

[0063] 01-Engine suspension arm; 02-Assist motor. Detailed Implementation

[0064] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0065] The terms "first" and "second" used in this article are used only for the convenience of describing two or more structures or components that are identical or similar in structure and / or function, and do not indicate any special limitation on order and / or importance.

[0066] Please refer to Figures 9-11 , Figures 21-23 . Figure 9 for Figure 2 A partial schematic diagram of the half-frame of the MacPherson strut suspension; Figure 10 for Figure 9 Longitudinal cross-sectional view of the half-frame of the MacPherson strut suspension; Figure 11 for Figure 9 A simplified longitudinal section diagram of the half-frame of the MacPherson strut suspension; Figure 21 for Figure 14 A partial schematic diagram of the half-frame of the MacPherson strut suspension; Figure 22 for Figure 21 Longitudinal cross-sectional view of the half-frame of the MacPherson strut suspension; Figure 23 for Figure 21 A simplified longitudinal section diagram of a half-frame of a MacPherson strut suspension.

[0067] The present invention provides a half-frame of MacPherson strut suspension, including an upper piece 11 and a lower piece 12. In the longitudinal section of the half-frame 1, both the upper piece 11 and the lower piece 12 include a first section. The two first sections are fitted together and fixed together. The half-frame 1 also includes a reinforcing plate 13. One end of the reinforcing plate 13 is fixedly connected to the upper piece 11. At least a portion of the reinforcing plate 13 is arranged opposite to at least a portion of the first section to form a receiving space B for accommodating and fixing the engine mount arm 01.

[0068] The present invention relates to a MacPherson strut suspension semi-frame 1, which improves the area for fixing the engine mount arm 01. Specifically, the first section of the upper piece 11 and the lower piece 12 are fixed together to form a lower fixing part. Compared with the prior art, without increasing the overall weight of the semi-frame 1, the thickness of the lower fixing part is increased, the rigidity is significantly increased, and the vibration isolation effect is significantly enhanced. At the same time, a reinforcing plate 13 is added and fixedly connected to the upper piece 11. The reinforcing plate 13 and the lower fixing part form a closed receiving area, which fixes the engine mount arm 01 while effectively isolating engine noise.

[0069] In summary, the semi-subframe 1 of the MacPherson suspension of this invention can effectively improve the vibration isolation effect of the whole vehicle, significantly improve the NVH performance of the whole vehicle, and improve passenger comfort.

[0070] Furthermore, within the longitudinal section of the half-frame 1, the upper piece 11 and the lower piece 12 also include a second section connected to the first section. The second section extends in the opposite direction to the reinforcing plate 13, and the two second sections enclose to form a cavity A.

[0071] Modal analysis of the half-frame 1 showed that the vibration isolation effect was best when the half-frame 1 adopted the above structure.

[0072] Please continue to refer to this. Figure 11 In the first embodiment of the semi-frame 1, the reinforcing plate 13 is overlapped and fixed to the first section of the upper piece 11. This semi-frame 1 is suitable for a column-type power steering system, that is, the power steering motor is mounted on the column.

[0073] Specifically, the upper piece 11 includes a first upper extension 11a, a first horizontal extension 11b, a first downwardly extending transition 11c, and a second horizontal extension 11d connected in sequence. The lower piece 12 includes a first lower extension 12a and a third horizontal extension 12b connected in sequence. The first upper extension 11a, the first horizontal extension 11b, and the first transition 11c in the upper piece 11 constitute the aforementioned second section. Partial areas of the first lower extension 12a and the third horizontal extension 12b in the lower piece 12 constitute the aforementioned second section. The two second sections enclose and form a cavity A in the shape of a right trapezoid. The first upper extension 11a and the first lower extension 12a are overlapped and welded together. The second horizontal extension 11d in the upper piece 11 constitutes the aforementioned first section. The remaining part of the third horizontal extension 12b in the lower piece 12 constitutes the aforementioned first section. The two first sections fit together and are welded together by plug welding.

[0074] Please continue to refer to this. Figure 23 In the second embodiment of the semi-frame 1, the reinforcing plate 13 is fixedly connected to the middle of the first section of the upper piece 11, and the end connecting the first section and the second section forms a support part b for supporting the power steering motor 02. This semi-frame 1 is suitable for a dual pinion power steering system, i.e., the power steering motor 02 is mounted on the rack of the steering gear.

[0075] Specifically, the upper piece 11 includes a second upper extension segment 11a' and a fourth horizontal extension segment 11b' connected in sequence, a second transition segment 11c' and a fifth horizontal extension segment 11d' extending downward at an angle, a third transition segment 11e' extending downward at an angle, and a sixth horizontal extension segment 11f'; the lower piece 12 includes a second lower extension segment 12a' and a seventh horizontal extension segment 12b' connected in sequence, a fourth transition segment 12c' extending upward at an angle, an eighth horizontal extension segment 12d' extending upward at an angle, a fifth transition segment 12e' extending downward at an angle, and a ninth horizontal extension segment 12f'.

[0076] In the upper piece 11, the second upper extension 11a', the fourth horizontal extension 11b', and the second transition segment 11c' constitute the aforementioned second section. In the lower piece 12, the second lower extension 12a', the seventh horizontal extension 12b', and the fourth transition segment 12c' constitute the aforementioned second section. The two together form a cavity A in the shape of a bullet.

[0077] In the upper piece 11, the fifth horizontal extension segment 11d', the third transition segment 11e', and the sixth horizontal extension segment 11f' constitute the aforementioned first section. In the lower piece 12, the eighth horizontal extension segment 12d', the fifth transition segment 12e', and the ninth horizontal extension segment 12f' constitute the aforementioned first section. The two first sections are fitted together and welded together. The fifth horizontal extension segment 11d' in the upper piece 11 and the eighth horizontal extension segment 12d' in the lower piece 12 constitute the aforementioned support part b, which is used to support the power assist motor 02. The sixth horizontal extension segment 11f' in the upper piece 11, the ninth horizontal extension segment 12f' in the lower piece 12, and the horizontal segment of the reinforcing plate 13 together form the aforementioned accommodating space B.

[0078] Furthermore, in the first section of the upper piece 11, except for the area opposite to the reinforcing plate 13, weight reduction holes are provided, namely the fifth horizontal extension section 11d' and the third transition section 11e' of the upper piece 11; in the first section of the lower piece 12, the area forming the support part b is provided with weight reduction holes, namely the eighth horizontal extension section 12d' of the lower piece 12, so as to further reduce the weight of the half subframe 1 and the subframe as a whole and meet the lightweight requirements.

[0079] In both implementations of the subframe 1, the reinforcing plate 13 includes a sequentially connected overlapping section 13a, an upwardly extending transition section 13b, and a horizontal section 13c. The overlapping section 13a is used for overlapping welding with the upper plate 11. The transition section 13b is provided with weight-reducing holes to further reduce the overall weight of the subframe 1 and the subframe. The horizontal section 13c is used to fix the engine mount arm 01.

[0080] Please refer to Figure 12 and Figure 24 , Figure 12 for Figure 9 A bottom view of the half-frame of the MacPherson strut suspension; Figure 24 for Figure 21 A bottom view of the half-frame of the MacPherson strut suspension.

[0081] In the two embodiments of the present invention, the first section forming the accommodating space B is provided with a mounting hole O for fixing the engine mounting arm 01, and the lower piece 12 is also provided with a plug welding hole surrounding the mounting hole O. In the upper piece 11 and the lower piece 12, the area forming the accommodating space B is fixed by plug welding.

[0082] Specifically, the plug welding holes include three arc-shaped plug welding holes c surrounding the suspension mounting hole O, and one straight plug welding hole d. This arrangement can effectively increase the connection area when the upper piece 11 and the lower piece 12 are welded, ensure the connection stability of the upper piece 11 and the lower piece 12, improve the overall rigidity, and achieve a good vibration isolation effect.

[0083] Please continue to refer to this. Figure 10 and Figure 22 In this embodiment, the reinforcing plate 13 is also provided with a mounting hole O at the corresponding position. A connecting nut is also fixed at the position of the mounting hole O. During the process of fixing the engine mounting arm 01, the connecting bolt passes through the mounting hole O of the upper first section, the vertical connecting hole of the engine mounting arm 01, and the mounting hole O of the upper reinforcing plate 13 in sequence from bottom to top, and is threadedly connected to the connecting nut to achieve the fixing of the engine mounting arm 01.

[0084] Please refer to Figures 5-6 , Figures 17-18 . Figure 5 for Figure 2 A schematic diagram of the subframe structure of the MacPherson strut suspension; Figure 6 for Figure 5 A breakdown diagram of the subframe of the MacPherson strut suspension; Figure 17 for Figure 14 A schematic diagram of the subframe structure of the MacPherson strut suspension; Figure 18 for Figure 17 A breakdown diagram of the subframe of a MacPherson strut suspension.

[0085] The present invention also provides a subframe for a MacPherson strut suspension, including the aforementioned half-subframe 1 of the MacPherson strut suspension.

[0086] The subframe of the MacPherson strut suspension of the present invention includes the aforementioned half subframe 1 of the MacPherson strut suspension, and therefore has the same technical effects as the aforementioned half subframe 1 of the MacPherson strut suspension, which will not be repeated here.

[0087] Meanwhile, when the subframe of the present invention includes the half subframe 1 of the first embodiment, it is applicable to column-type power steering systems; when the subframe of the present invention includes the half subframe 1 of the second embodiment, it is applicable to dual pinion power steering systems. That is, by replacing the half subframe 1 with different forms, the safety requirements of different power steering systems can be met, resulting in stronger compatibility and a wider range of applications.

[0088] Furthermore, the subframe of the MacPherson suspension also includes a crossbeam 2, a front anti-collision crossbeam 3, and two longitudinal beams 4. The longitudinal beams 4 are fixedly connected to the corresponding ends of the half subframe 1, the crossbeam 2, and the front anti-collision crossbeam 3 in sequence, and the width of the connection end between the two longitudinal beams 4 and the front anti-collision crossbeam 3 is greater than the width of the connection end between the two longitudinal beams 4 and the half subframe 1.

[0089] By incorporating a front anti-collision beam 3, the beam can withstand the impact force and absorb energy during a collision, effectively protecting the safety of the occupants in the front compartment. The two longitudinal beams 4 are connected laterally via the crossbeam 2, stabilizing them during a collision and preventing deformation, thus protecting components mounted on the subframe. The width of the connection between the two longitudinal beams 4 and the front anti-collision beam 3 is greater than the width of the connection between the two longitudinal beams 4 and the semi-subframe 1. During a collision, the stress on the longitudinal beams 4 is as follows: Figure 13 and Figure 25 As shown, this design prevents the collision force from being transmitted longitudinally, further protecting the safety of the occupants in the front compartment.

[0090] Please continue to refer to this. Figure 26 , Figure 26 These are split diagrams of the components other than the subframe in two types of MacPherson strut suspension subframes.

[0091] The front anti-collision crossbeam 3 includes a crossbeam body 31, two reinforcing members 32 and two energy-absorbing members 33. The two reinforcing members 32 are respectively fitted onto the two transverse ends of the crossbeam body 31. One end of the energy-absorbing member 33 is fixedly connected to one of the reinforcing members 32, and the other end is fixedly connected to the longitudinal beam 4 at the corresponding end. The wall surface of the energy-absorbing member 33 is provided with multiple guide grooves extending laterally for bending deformation during a collision.

[0092] When subjected to an external impact, the crossbeam body 31 can withstand the impact force and absorb energy. The two reinforcing members 32 can strengthen the strength of both ends of the crossbeam body 31 and resist the external force when subjected to impact load, preventing the ends of the crossbeam body 31 from bending prematurely. The energy-absorbing members 33 at the left and right ends can collapse and deform during the impact by setting guide grooves that extend laterally, absorbing energy and preventing the impact force from being further transmitted to the front compartment.

[0093] In this embodiment, the crossbeam body 31 is an arc-shaped structure that protrudes away from the half-frame 1, and its cross-section is a U-shape facing away from the half-frame 1. It is made of ultra-high strength steel and is formed by roll forming. This design makes the crossbeam body 31 stronger and has a better ability to absorb energy and resist deformation.

[0094] Furthermore, the longitudinal beam 4 includes an upper longitudinal beam 41, a lower longitudinal beam 42, and an intermediate reinforcing plate 43. The intermediate reinforcing plate 43 is disposed between the upper longitudinal beam 41 and the lower longitudinal beam 42 near one end of the semi-subframe 1 to improve the strength of that end, prevent deformation, and protect the occupants in the front compartment.

[0095] Please continue to refer to this. Figures 2-4 , Figures 14-16 ,as well as Figure 27 , Figure 2 This is a schematic diagram of the structure of a first embodiment of the MacPherson strut suspension provided by the present invention; Figure 3 for Figure 2 A structural diagram of the MacPherson strut suspension from another angle; Figure 4 for Figure 2 Front view of MacPherson strut suspension; Figure 14 This is a schematic diagram of the second embodiment of the MacPherson strut suspension provided by the present invention; Figure 15 for Figure 14 A structural diagram of the MacPherson strut suspension from another angle; Figure 16 for Figure 14 Front view of MacPherson strut suspension; Figure 27 This is a schematic diagram of the battery anti-collision beam in the subframe of two MacPherson suspensions after being subjected to stress.

[0096] The invention also includes two first reinforcing members 5, one end of which is connected to the end of the half-frame 1 facing away from the longitudinal beam 4, and the other end is connected to the vehicle body, thereby improving the installation strength and installation point stiffness of the half-frame 1 in a collision and enhancing NVH performance; it also includes a battery anti-collision beam 6, whose two longitudinal ends are fixedly connected to the two first reinforcing members 5. When the bottom of the vehicle is impacted, the battery anti-collision beam 6 can be partially bent, which can absorb the impact energy and prevent direct impact on the battery casing.

[0097] The first reinforcing member 5 is connected to the half-frame 1 and the body by bolts.

[0098] Furthermore, it also includes two second reinforcing members 7, one end of which is connected to the lateral end of the upper piece 11, and the other end is fixedly connected to the vehicle body.

[0099] The present invention adds two second reinforcing members 7 to connect the half-frame 1 and the body, which can play a role in distributing the load, thereby improving the rigidity of the half-frame 1 and improving the vibration isolation effect.

[0100] Please continue to refer to this. Figures 7-8 , Figure 7 for Figure 5 Schematic diagram of the middle half of the subframe; Figure 8 for Figure 7 A breakdown diagram of a half-frame; Figure 19 for Figure 17 Schematic diagram of the middle half of the subframe; Figure 20 for Figure 19 A breakdown diagram of a half-frame.

[0101] like Figure 2 , Figure 13As shown, the semi-subframe 1 of the present invention also provides space and mounting interfaces for the front lower control arm 8, the steering gear 9, and the stabilizer bar 10. Specifically, the semi-subframe 1 of the present invention further includes a steering gear mounting sleeve 14, a stabilizer bar mounting sleeve 15, a stabilizer bar mounting reinforcement plate 16, a cavity reinforcement plate 17, a longitudinal beam connecting bracket 18, and a body mounting sleeve 19; wherein, the steering gear mounting sleeve 14 is used to mount the steering gear 9, the stabilizer bar mounting sleeve 15 is used to mount the stabilizer bar 10, and the longitudinal beam connecting bracket 18 is used to connect the longitudinal beam 4.

[0102] In this invention, the front anti-collision crossbeam 3 of the semi-subframe 1 is formed by roll forming, while other parts are formed by stamping.

[0103] As described above, the arrangement of the semi-subframe 1 of the present invention is compact, with high overall performance, strong load-bearing capacity, low maintenance cost, and high material utilization rate, meeting the usage requirements of A-class and B-class sedans, compact SUVs, and mid-size SUVs across the entire platform. At the same time, the new platform has a high degree of commonality, reaching 95%.

[0104] The present invention also provides a MacPherson strut suspension, including the subframe of the aforementioned MacPherson strut suspension.

[0105] The MacPherson strut suspension of the present invention includes the subframe of the aforementioned MacPherson strut suspension, and therefore has the same technical effects as the subframe of the aforementioned MacPherson strut suspension, which will not be repeated here.

[0106] Please refer to Figures 28-29 , Figure 28 The diagram shows the modal analysis structure of the two MacPherson strut suspensions of this invention and the MacPherson strut suspension of the prior art. Figure 29 This is a comparison chart of the stiffness performance of the two MacPherson strut suspensions of this invention and the existing MacPherson strut suspension.

[0107] Figure 28 In the diagram, the three bars from left to right represent the existing MacPherson strut suspension, the MacPherson strut suspension of the first embodiment of the present invention, and the MacPherson strut suspension of the second embodiment of the present invention, respectively. The analysis results show that the stiffness performance and vibration isolation effect of the MacPherson strut suspension of the two embodiments of the present invention are far superior to those of the existing MacPherson strut suspension.

[0108] The foregoing has provided a detailed description of the semi-subframe, subframe, and MacPherson suspension of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A semi-frame for a MacPherson strut suspension, comprising an upper piece (11) and a lower piece (12), characterized in that, In the longitudinal section of the half-frame (1), the upper piece (11) and the lower piece (12) each include a first section. The two first sections are attached to each other and fixed together. The half-frame also includes a reinforcing plate (13). One end of the reinforcing plate (13) is fixedly connected to the upper piece (11). At least a portion of the reinforcing plate (13) is arranged opposite to at least a portion of the first section to form a receiving space (B) for receiving and fixing the engine mounting arm (01). The first section of the upper piece (11) and the lower piece (12) are fixed together to form a lower fixing part, and a receiving space with one end closed is formed between the reinforcing plate (13) and the lower fixing part to fix the engine suspension arm (01).

2. The semi-frame of the MacPherson strut suspension according to claim 1, characterized in that, In the longitudinal section of the half-frame (1), both the upper piece (11) and the lower piece (12) include a second piece connected to the first section. The second piece extends in the opposite direction to the reinforcing plate (13), and the two second pieces enclose a cavity (A).

3. The semi-frame of the MacPherson strut suspension according to claim 2, characterized in that, The reinforcing plate (13) is fixed to the second section of the upper piece (11).

4. The semi-frame of the MacPherson strut suspension according to claim 2, characterized in that, The reinforcing plate (13) is fixed to the middle of the first section of the upper piece (11), and the end of the first section connected to the second section forms a support part (b) for supporting the power assist motor (02).

5. The semi-frame of the MacPherson strut suspension according to claim 4, characterized in that, In the first section of the upper piece (11), except for the area opposite to the reinforcing plate (13), weight reduction holes are provided; Alternatively, in the first section of the lower piece (12), the area forming the support part (b) is provided with weight reduction holes.

6. The semi-frame of the MacPherson strut suspension according to claim 3 or 4, characterized in that, The reinforcing plate (13) includes a sequentially connected overlapping section (13a), an upwardly extending transition section (13b), and a horizontal section (13c). The horizontal section (13c) is used to fix the engine suspension arm (01), and the transition section (13b) is provided with weight reduction holes.

7. The semi-frame of the MacPherson strut suspension according to any one of claims 1-5, characterized in that, The first section forming the accommodating space (B) is provided with a mounting hole (O) for fixing the engine mounting arm (01). The lower piece (12) is also provided with a plug welding hole surrounding the mounting hole (O). The upper piece (11) and the lower piece (12) are fixed by plug welding in the area forming the accommodating space (B).

8. The semi-frame of the MacPherson strut suspension according to claim 7, characterized in that, The plug weld holes include three arc-shaped plug weld holes (c) surrounding the suspension mounting hole (O), and one straight plug weld hole (d).

9. A subframe for a MacPherson strut suspension, characterized in that, The half-frame (1) includes the MacPherson suspension as described in any one of claims 1-8.

10. The subframe of the MacPherson strut suspension according to claim 9, characterized in that, It also includes a crossbeam (2), a front anti-collision crossbeam (3), and two longitudinal beams (4). The longitudinal beams (4) are fixedly connected to the corresponding ends of the half-frame (1), the crossbeam (2), and the front anti-collision crossbeam (3) in sequence, and the width of the connection end of the two longitudinal beams (4) with the front anti-collision crossbeam (3) is greater than the width of the connection end of the two longitudinal beams (4) with the half-frame (1).

11. The subframe of the MacPherson strut suspension according to claim 10, characterized in that, The front anti-collision beam (3) includes a beam body (31), two reinforcing members (32) and two energy-absorbing members (33). The two reinforcing members (32) are respectively fitted onto the two transverse ends of the beam body (31). One end of the energy-absorbing member (33) is fixedly connected to one of the reinforcing members (32), and the other end is fixedly connected to the longitudinal beam (4) at the corresponding end. The wall surface of the energy-absorbing member (33) is provided with multiple guide grooves extending transversely for bending and deformation during collision.

12. The subframe of the MacPherson strut suspension according to claim 11, characterized in that, The crossbeam body (31) is an arc-shaped structure that protrudes away from the half-frame (1), and its cross-section is a concave shape facing away from the half-frame (1). Alternatively, the beam body (31) is formed by roll forming.

13. The subframe of the MacPherson strut suspension according to claim 10, characterized in that, The longitudinal beam (4) includes an upper longitudinal beam piece (41), a lower longitudinal beam piece (42), and an intermediate reinforcing plate (43). The intermediate reinforcing plate (43) is disposed between the upper longitudinal beam piece (41) and the lower longitudinal beam piece (42) near one end of the half-frame (1).

14. The subframe of the MacPherson strut suspension according to claim 10, characterized in that, It also includes two first reinforcing members (5), one end of which is connected to the end of the half-frame (1) facing away from the longitudinal beam (4), and the other end is connected to the vehicle body. It also includes a battery anti-collision beam (6), whose two longitudinal ends are fixedly connected to the two first reinforcing members (5).

15. The subframe of the MacPherson strut suspension according to claim 10, characterized in that, It also includes two second reinforcing members (7), one end of which is connected to the lateral end of the upper piece (11), and the other end is fixedly connected to the vehicle body.

16. A MacPherson strut suspension, characterized in that, The subframe includes the MacPherson strut suspension as described in any one of claims 9-15.

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