Auxiliary frame assembly and vehicle

Abstract

The auxiliary frame assembly comprises a frame longitudinal beam, at least part of the frame longitudinal beam is an inclined section, and the inclined section is constructed to obliquely extend outwards from back to front; the front end of the inner side of the lower swing arm is movably connected with the inclined section through the breakable connecting piece, the rear end of the inner side of the lower swing arm is movably connected with the frame longitudinal beam, and the outer side of the lower swing arm is suitable for being fixed relative to a wheel; wherein the breakable connecting piece extends in the front-back direction, an included angle is formed between the breakable connecting piece and the extending direction of the inclined section, and the inclined section is suitable for acting on the breakable connecting piece during collision and enabling the breakable connecting piece to be broken. According to the auxiliary frame assembly, the lower swing arm is movably connected with the inclined section of the frame longitudinal beam through the breakable connecting piece, and the breakable connecting piece can be broken during collision, so that the use safety of a vehicle can be guaranteed, and meanwhile, the later maintenance cost of the vehicle can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle manufacturing, in particular to a subframe assembly and a vehicle with such a frame structure. Background Art

[0002] At present, the automotive industry is in an era of accelerating transformation. In particular, the automotive industry is developing rapidly, and the competition is becoming increasingly fierce. The trend of new energy in the automotive industry is constantly moving forward. At the same time, the demand for automotive technology, intelligence, and safety is increasing. In particular, people attach more and more importance to safety. Therefore, automotive safety is not only the bottom line of automotive manufacturers but also a respect for life.

[0003] From traditional fuel vehicles to mild hybrid vehicles, plug-in hybrid vehicles, and pure electric vehicles, etc., automotive safety has always been a topic of concern to users. Whether it is the passive safety that has always adhered to its essence and the increasingly innovative active safety performance, the purpose is to protect personal safety to the greatest extent and reduce property losses.

[0004] Among them, automotive passive safety includes various situations such as frontal collision and offset collision. And when a vehicle collides, in order to avoid large-scale collapse of the body structure and other situations, which may lead to intrusion into the passenger compartment and cause safety problems, a breakable structure can be set at the connection of the body components. However, the existing breakable structures will show overall fracture and deformation when the vehicle collides, resulting in high later maintenance costs and there is room for improvement. Summary of the Utility Model

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a subframe assembly, which can ensure the safety of the vehicle and reduce the vehicle maintenance cost.

[0006] The subframe assembly according to an embodiment of the utility model includes: a frame longitudinal beam, at least part of which is an inclined section, and the inclined section is configured to extend obliquely outward from the rear to the front; a lower control arm and a breakable connecting member. The inner front end of the lower control arm is movably connected to the inclined section through the breakable connecting member, the inner rear end of the lower control arm is movably connected to the frame longitudinal beam, and the outer side of the lower control arm is adapted to be relatively fixed to the wheel. Wherein, the breakable connecting member is arranged to extend in the front-rear direction and form an angle with the extending direction of the inclined section, and the inclined section is adapted to act on the breakable connecting member during a collision and cause the breakable connecting member to break.

[0007] According to the subframe assembly of the embodiments of the present utility model, the lower control arm is movably connected to the inclined section of the vehicle frame longitudinal beam through a frangible connecting member, and the frangible connecting member can break during a collision, thereby ensuring the safety of vehicle use. At the same time, only the frangible connecting member breaks during a collision, thereby reducing the later maintenance cost of the vehicle, with better use effects and a wider application range.

[0008] According to the subframe assembly of some embodiments of the present utility model, the frangible connecting member is configured as a connecting bolt, and the inner front end of the lower control arm is rotatably connected to the inclined section through the connecting bolt; wherein, the axis of the connecting bolt is in the front-rear direction, and the inclined section is adapted to generate a shearing force on the connecting bolt in the radial direction of the connecting bolt during an offset collision.

[0009] According to the subframe assembly of some embodiments of the present utility model, the included angle between the axis direction of the connecting bolt and the extending direction of the inclined section is less than 45°.

[0010] According to the subframe assembly of some embodiments of the present utility model, the included angle between the axis direction of the connecting bolt and the extending direction of the inclined section is greater than 5°.

[0011] According to the subframe assembly of some embodiments of the present utility model, the vehicle frame longitudinal beam is provided with a mounting opening, the inner front end of the lower control arm forms a mounting portion, the mounting portion extends to the mounting opening, and the connecting bolt penetrates through the mounting portion and is inserted into the peripheral wall of the mounting opening.

[0012] According to the subframe assembly of some embodiments of the present utility model, the mounting opening includes a front side wall and a rear side wall distributed oppositely, both ends of the connecting bolt are respectively inserted into the front side wall and the rear side wall, and the shearing strength of the front side wall and the rear side wall in the direction of the shearing force is greater than the shearing strength of the connecting bolt.

[0013] According to the subframe assembly of some embodiments of the present utility model, the vehicle frame longitudinal beam is provided with a mounting bracket, the mounting bracket forms an outwardly open mounting groove, and at least a part of the inner front end of the lower control arm extends into the mounting groove to be connected to the mounting bracket through the frangible connecting member.

[0014] According to the subframe assembly of some embodiments of the present utility model, the mounting bracket is detachably connected to the vehicle frame longitudinal beam through a connecting member.

[0015] According to some embodiments of the present utility model, for the subframe assembly, the mounting bracket includes a front sidewall, a connecting wall, and a rear sidewall. The front sidewall and the rear sidewall are oppositely distributed and connected to the front and rear ends of the connecting wall to jointly define the mounting groove. The breakable connecting member passes through the front sidewall and the rear sidewall, and at least one of the front sidewall, the connecting wall, and the rear sidewall is connected to the inclined section.

[0016] According to some embodiments of the present utility model, for the subframe assembly, the longitudinal frame beam of the frame includes a front beam section and a rear beam section. The front beam section is configured as the inclined section, the rear beam section extends in the front-rear direction, the inner front end of the lower control arm is movably connected to the front beam section through the breakable connecting member, and the inner rear end of the lower control arm is movably connected to the rear beam section.

[0017] According to some embodiments of the present utility model, for the subframe assembly, there are two longitudinal frame beams of the frame, and a frame cross beam is connected between the two longitudinal frame beams; there are two lower control arms, and the two lower control arms are correspondingly connected to the outer sides of the two longitudinal frame beams.

[0018] The present utility model also provides a vehicle.

[0019] According to the vehicle of the embodiments of the present utility model, it includes the subframe assembly described in any one of the above.

[0020] The vehicle and the above-mentioned subframe assembly have the same advantages as compared with the prior art, which will not be elaborated here.

[0021] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0023] Figure 1 is a schematic diagram of a partial structure of the subframe assembly according to the embodiments of the present utility model Figure 1 ;

[0024] Figure 2 is a schematic diagram of a partial structure of the subframe assembly according to the embodiments of the present utility model Figure 2 。

[0025] Reference numerals:

[0026] Subframe assembly 100,

[0027] Frame longitudinal beam 1, inclined section 11, mounting opening 12, mounting bracket 13, front side wall 131, first connection hole 1311, connection wall 132, rear side wall 133, second connection hole 1331, connecting piece 14, mating part 15, connecting stud 16, through hole 161, rear beam section 17, mounting groove 18,

[0028] Frame cross beam 2, lower swing arm 5, mounting part 51, weight reduction hole 52, connecting bolt 6, mating part 7. Specific implementation manner

[0029] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 thus should not be construed as a limitation of the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0031] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounting", "connecting", and "connecting" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] Unless otherwise specified, the front-rear direction in this application is the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction is the transverse direction of the vehicle, i.e., the Y direction; and the up-down direction is the vertical direction of the vehicle, i.e., the Z direction.

[0033] Next, refer to Figure 1 - Figure 2Describing the subframe assembly 100 according to an embodiment of the present utility model can ensure vehicle safety and reduce vehicle maintenance costs.

[0034] As Figure 1 - Figure 2 shown, the subframe assembly 100 according to an embodiment of the present utility model includes: a frame longitudinal beam 1, a lower control arm 5, and a breakable connecting member.

[0035] At least a part of the frame longitudinal beam 1 is an inclined section 11, and the inclined section 11 is configured to extend obliquely outward from the rear to the front. The inner front end of the lower control arm 5 is movably connected to the inclined section 11 through the breakable connecting member, and the inner rear end of the lower control arm 5 is movably connected to the frame longitudinal beam 1. The outer side of the lower control arm 5 is adapted to be relatively fixed to the wheel. Wherein, the breakable connecting member is arranged to extend in the front-rear direction and form an angle with the extending direction of the inclined section 11, and the inclined section 11 is adapted to act on the breakable connecting member during a collision and cause the breakable connecting member to break.

[0036] Among them, the subframe is the skeleton of the front and rear axles and is a component of the front and rear axles. The subframe is a bracket for supporting the front and rear axles and the suspension. The main frame can be connected to the axle, suspension, etc. through the subframe. The subframe can be used to block vibration and noise and reduce their direct entry into the passenger compartment, thereby improving the user's comfort. Some vehicles also install a subframe for the engine, with high flexibility in setting.

[0037] The wheels of the vehicle can also be connected to the whole vehicle through the subframe. When the vehicle collides, the pressure at the collision part is high and a large degree of collapse will occur, causing the wheels to be violently impacted. At this time, in order to prevent the wheels from invading the passenger compartment, a breakable structure can be set at the connection. When the vehicle collides, the wheels can be thrown outwards towards the body, thereby improving the safety of vehicle use.

[0038] Specifically, the subframe assembly 100 is provided with a frame longitudinal beam 1. The frame longitudinal beam 1 is arranged inside the vehicle body and extends in the front-rear direction. The frame longitudinal beam 1 can be set to two, and the two frame longitudinal beams 1 are spaced apart transversely, thereby playing a load-bearing role. The side beam type frame, middle beam type frame, etc. of the vehicle are all provided with a frame longitudinal beam 1. The frame longitudinal beam 1 can be formed by stamping low alloy steel plates, and its cross-sectional shape is generally a trough type, and can also be set as a Z-shaped or box-shaped, etc., to improve the flexibility of setting.

[0039] And at least a part of the frame longitudinal beam 1 is configured as an inclined section 11, that is, the frame longitudinal beam 1 can be partially configured as an inclined section 11 or can be integrally configured as an inclined section 11, and the inclined section 11 is configured to extend obliquely outward from the rear to the front. That is, when the frame longitudinal beam 1 is installed on the whole vehicle, part or all of it is configured to extend inwardly from the front to the rear, so that the distance from the front end of the inclined section 11 of the frame longitudinal beam 1 to the vehicle center line is greater than the distance from the front end to the vehicle center line.

[0040] Furthermore, the subframe assembly 100 is further provided with a lower control arm 5 and a breakable connecting member. The inner front end of the lower control arm 5 can be movably connected to the mounting bracket 13 through the breakable connecting member. The outer side of the lower control arm 5 can be relatively fixed to the wheel, that is, one side of the lower control arm 5 can be movably connected to the inclined section 11 of the vehicle frame longitudinal beam 1, and the other side can be relatively fixed to the wheel, so that the wheel can be movable relative to the inclined section 11 of the vehicle frame longitudinal beam 1. Moreover, the inner rear end of the lower control arm 5 is movably connected to the vehicle frame longitudinal beam 1. That is, according to the overall vehicle design requirements, the inner rear end of the lower control arm 5 can be connected to the inclined section 11 of the vehicle frame longitudinal beam 1, or the inner rear end of the lower control arm 5 can be connected to the non-inclined section of the vehicle frame longitudinal beam 1. Herein, the inner and outer directions are along the transverse direction of the vehicle, that is, the Y direction, and the inner direction is the direction close to the vehicle center line, and the outer direction is the direction away from the vehicle center line.

[0041] Wherein, when the breakable connecting member is connected between the lower control arm 5 and the vehicle frame longitudinal beam 1, the breakable connecting member is arranged to extend in the front-rear direction, and the lower control arm 5 is connected to the inclined section 11 of the vehicle frame longitudinal beam 1. There is an included angle between the inclined section 11 and the front-rear direction, that is, the breakable connecting member also forms an included angle with the extending direction of the inclined section 11. When a vehicle collision occurs, the collision force can act on the wheel, and then be conducted from the wheel to the lower control arm 5. And the lower control arm 5 is connected to the vehicle frame longitudinal beam 1 through the breakable connecting member. When there is a relative displacement trend between the lower control arm 5 and the vehicle frame longitudinal beam 1 under the action of force, the inclined section 11 of the vehicle frame longitudinal beam 1 can exert a force on the breakable connecting member. According to the different magnitudes of the collision force, the magnitudes of the acting forces are also different. And when the acting force of the inclined section 11 of the vehicle frame longitudinal beam 1 on the breakable connecting member is greater than the acting force that the breakable connecting member itself can bear, the acting force generated by the inclined section 11 of the vehicle frame longitudinal beam 1 on the breakable connecting member can cause the breakable connecting member to break, so that the wheel can be separated from the vehicle frame longitudinal beam 1, avoiding the wheel from invading the passenger compartment due to the collision force and ensuring the safety of vehicle use. Moreover, only the breakable connecting member is caused to break by the acting force, which can reduce the damage of other components and lower the vehicle's later maintenance cost.

[0042] It should be noted that the vehicle collisions include head-on collisions and offset collisions, etc. Among them, the head-on collision can be a collision from directly in front of the vehicle's traveling direction, and the offset collision can be a collision from the left front or right front of the vehicle's traveling direction. The breakable connecting member in the present invention can break during both the head-on collision and the offset collision, and both can effectively cause the lower control arm 5 to swing outwards, avoiding the wheel connected to the lower control arm 5 from invading the passenger compartment and posing a safety hazard to the occupants. Especially during an offset collision, the included angle between the extending direction of the inclined section 11 of the vehicle frame longitudinal beam 1 and the acting direction of the offset collision force is smaller, making it easier for the collision force on the inclined section 11 to act on the breakable connecting member and cause the breakable connecting member to break, which is beneficial to improving the safety of the occupants during the offset collision process.

[0043] The breakable connecting member is arranged to extend in the front-rear direction. Here, the front-rear direction can refer to the direct front-rear direction, or a direction with a small angle to the front-rear direction. That is, the breakable connecting member can also be arranged to extend in a direction with a small angle to the front-rear direction. The small angle can be set to 3°, 5°, 7° or the like.

[0044] For the subframe assembly 100 according to an embodiment of the present invention, the lower control arm 5 is movably connected to the inclined section 11 of the vehicle frame longitudinal beam 1 through a breakable connecting member, and the breakable connecting member can break during a collision, thereby ensuring the safety of vehicle use. At the same time, only the breakable connecting member breaks during a collision, thereby reducing the vehicle's later maintenance cost, having better use effects and a wider application range.

[0045] In some embodiments, the breakable connecting member is configured as a connecting bolt 6. The inner front end of the lower control arm 5 is rotatably connected to the inclined section 11 through the connecting bolt 6. Wherein, the axis of the connecting bolt 6 extends in the front-rear direction, and the inclined section 11 is adapted to generate a shearing force on the connecting bolt 6 in the radial direction of the connecting bolt 6 during an offset collision.

[0046] Specifically, as Figure 1 shown, the lower control arm 5 can be connected to the vehicle frame longitudinal beam 1 through a breakable connecting member, and the breakable connecting member can be set as the connecting bolt 6 or the like. The connecting bolt 6 can pass through the lower control arm 5 and the vehicle frame longitudinal beam 1 respectively, so that the inner front end of the lower control arm 5 is rotatably connected to the inclined section 11 through the connecting bolt 6, and further the wheel is rotatably connected to the vehicle frame longitudinal beam 1, which can reduce the transmission of vibration to the passenger compartment, improve the user's comfort, and is provided with a mating member that cooperates with the connecting bolt 6. The mating member can be set as a nut or the like to make the connecting bolt 6 relatively fixed, ensure the connection reliability, the connection method is convenient, and the setting cost can be reduced.

[0047] Furthermore, the connecting bolt 6 passes through the lower control arm 5 and the inclined section 11 of the vehicle frame longitudinal beam 1 respectively, so that the lower control arm 5 and the inclined section 11 are rotatably connected. After the connecting bolt 6 is installed on the inclined section 11, the axis of the connecting bolt 6 can extend in the front-rear direction. Furthermore, there is an angle between the extending direction of the axis of the connecting bolt 6 and the extending direction of the inclined section 11. During an offset collision of the vehicle, the inclined section 11 can generate a shearing force on the connecting bolt 6 in the radial direction of the connecting bolt 6, so that the connecting bolt 6 breaks, which can avoid the collision force generated during the collision from being transmitted to structures such as the vehicle frame longitudinal beam 1, so as to extend the service life of the vehicle frame longitudinal beam 1 and the like.

[0048] Among them, the axis of the connecting bolt 6 is along the front-rear direction. Here, the front-rear direction can refer to the exact front-rear direction or a direction with a small angle to the front-rear direction. That is, the axis of the connecting bolt 6 can also be set to be along a direction with a small angle to the front-rear direction. The small angle can be set to 3°, 5°, 7° or the like.

[0049] In some embodiments, the angle between the axis direction of the connecting bolt 6 and the extending direction of the inclined section 11 is less than 45°.

[0050] Specifically, the connecting bolt 6 is respectively passed through the lower swing arm 5 and the inclined section 11 of the vehicle frame longitudinal beam 1, so that the lower swing arm 5 and the inclined section 11 are rotatably connected. And after the connecting bolt 6 is installed on the inclined section 11, the axis of the connecting bolt 6 can extend along the front-rear direction. Thus, there is an angle between the extending direction of the axis of the connecting bolt 6 and the extending direction of the inclined section 11, and the angle between the axis direction of the connecting bolt 6 and the extending direction of the inclined section 11 is set to be less than 45°. That is, the angle between the axis direction of the connecting bolt 6 and the extending direction of the inclined section 11 can be set to 40°, 35°, 30° or the like. Setting the angle between the axis direction of the connecting bolt 6 and the extending direction of the inclined section 11 to be less than 45° makes the shear force along the radial direction received by the connecting bolt 6 larger, and then causes the connecting bolt 6 to break, which can ensure the vehicle use safety. At the same time, only the connecting bolt 6 breaks during the offset collision, which can reduce the vehicle's later maintenance cost, with better use effect and wider application range.

[0051] In some embodiments, the angle between the axis direction of the connecting bolt 6 and the extending direction of the inclined section 11 is greater than 5°.

[0052] Specifically, the connecting bolt 6 is respectively passed through the lower swing arm 5 and the inclined section 11 of the vehicle frame longitudinal beam 1, so that the lower swing arm 5 and the inclined section 11 are rotatably connected. And after the connecting bolt 6 is installed on the inclined section 11, the axis of the connecting bolt 6 can extend along the front-rear direction. Thus, there is an angle between the extending direction of the axis of the connecting bolt 6 and the extending direction of the inclined section 11, and the angle between the axis direction of the connecting bolt 6 and the extending direction of the inclined section 11 is set to be greater than 5°. That is, the angle between the axis direction of the connecting bolt 6 and the extending direction of the inclined section 11 can be set to 10°, 15°, 20° or the like. Setting the angle between the axis direction of the connecting bolt 6 and the extending direction of the inclined section 11 to be greater than 5° makes the shear force along the radial direction received by the connecting bolt 6 larger, and then causes the connecting bolt 6 to break, which can ensure the vehicle use safety. At the same time, only the connecting bolt 6 breaks during the offset collision, which can reduce the vehicle's later maintenance cost, with better use effect and wider application range.

[0053] In some embodiments, the longitudinal frame member 1 is provided with a mounting opening 12, and a mounting portion 51 is formed at the inner front end of the lower swing arm 5. The mounting portion 51 extends to the mounting opening 12, and the connecting bolt 6 passes through the mounting portion 51 and is inserted into the peripheral wall of the mounting opening 12.

[0054] Specifically, as Figure 1 shown, the lower swing arm 5 is connected to the longitudinal frame member 1 by the connecting bolt 6. The longitudinal frame member 1 is provided with a mounting opening 12, and a mounting portion 51 is formed at the inner front end of the lower swing arm 5. The mounting portion 51 can extend to the mounting opening 12. Then, the connecting bolt 6 passes through the mounting portion 51 and is inserted into the peripheral wall of the mounting opening 12, so that the lower swing arm 5 is movably connected to the longitudinal frame member 1. Thus, the longitudinal frame member 1 can protect the periphery of the shear position of the connecting bolt 6, and can avoid abnormal fracture of the connecting bolt 6 and the like, ensuring the connection reliability.

[0055] Furthermore, a mounting bracket 13 can be arranged inside the longitudinal frame member 1. The mounting bracket 13 can be connected to the longitudinal frame member 1 by means of a connecting member 14 or welding. The longitudinal frame member 1 is formed with a mating portion 15. The connecting member 14 can pass through the longitudinal frame member 1 and the mounting bracket 13 respectively and cooperate with the mating portion 15, so that the longitudinal frame member 1 is connected to the mounting bracket 13. The longitudinal frame member 1 and the mounting bracket 13 can also be integrally formed. The mounting bracket 13 is formed inside the longitudinal frame member 1 and together with the longitudinal frame member 1 forms a mounting opening 12. The longitudinal frame member 1 is also provided with a reinforcing plate around the mounting opening 12, thus ensuring the connection reliability.

[0056] In some embodiments, the mounting opening 12 includes a front side wall 131 and a rear side wall 133 which are oppositely distributed. The two ends of the connecting bolt 6 are respectively inserted into the front side wall 131 and the rear side wall 133. The shear strength of the front side wall 131 and the rear side wall 133 in the direction of the shear force is greater than the shear strength of the connecting bolt 6.

[0057] Specifically, as Figure 1 shown, the longitudinal frame member 1 is provided with a mounting opening 12, and a mounting portion 51 is formed at the inner front end of the lower swing arm 5. The mounting portion 51 can extend to the mounting opening 12. The mounting opening 12 is provided with a front side wall 131 and a rear side wall 133. The front side wall 131 and the rear side wall 133 are oppositely distributed. The front side wall 131 and the rear side wall 133 both extend horizontally. The front side wall 131 and the rear side wall 133 can be connected by a connecting wall 132. The connecting wall 132 can extend in the front-rear direction. The front side wall 131 and the rear side wall 133 can also be directly connected to the inner wall of the longitudinal frame member 1, with high flexibility in setting.

[0058] Further, both ends of the connecting bolt 6 are respectively passed through the front side wall 131 and the rear side wall 133, and the mounting portion 51 of the lower swing arm 5 is placed within the mounting opening 12, that is, the connecting bolt 6 can be sequentially passed through the front side wall 131, the mounting portion 51, and the rear side wall 133, so that the lower swing arm 5 is connected to the inclined section 11 of the vehicle frame longitudinal beam 1, as Figure 2 shown. When a mounting bracket 13 is provided within the mounting opening 12, both the front side wall 131 and the rear side wall 133 are formed on the mounting bracket 13. The front side wall 131 is provided with a first connection hole 1311, and the rear side wall 133 is provided with a second connection hole 1331. The connecting bolt 6 can be sequentially passed through the first connection hole 1311 and the second connection hole 1331 in the front-rear direction.

[0059] And when the vehicle undergoes an offset collision, the collision force is transmitted along the wheel to the lower swing arm 5, and then transmitted to the connecting bolt 6, and is respectively transmitted to the front side wall 131 and the rear side wall 133 through the connecting bolt 6. When the collision force is transmitted to the front side wall 131, the rear side wall 133, and the connecting bolt 6, relative displacement will occur between the front side wall 131 and the rear side wall 133 and the connecting bolt 6, and then shear force will be generated between the front side wall 131 and the rear side wall 133 and the connecting bolt 6. Moreover, the shear strength of the front side wall 131 and the rear side wall 133 in the direction of the shear force is greater than the shear strength of the connecting bolt 6, so that the connecting bolt 6 can break first, thereby avoiding the transmission of the acting force to the vehicle frame longitudinal beam 1, etc., to extend the service life of the vehicle frame longitudinal beam 1, etc.

[0060] Wherein, when the mounting bracket 13 and the vehicle frame longitudinal beam 1 are fixedly connected through a connecting member 14, connection convex columns 16 are formed on the sides of the front side wall 131 and the rear side wall 133 of the mounting bracket 13 that face away from each other. The connection convex columns 16 are formed with through holes 161. The connecting member 14 can be sequentially passed through the vehicle frame longitudinal beam 1 and the through holes 161, thereby connecting the mounting bracket 13 and the vehicle frame longitudinal beam 1. The provision of the connection convex columns 16 can ensure the structural strength of the front side wall 131 and the rear side wall 133, and while ensuring the connection reliability between the mounting bracket 13 and the vehicle frame longitudinal beam 1, it can also ensure the connection reliability between the lower swing arm 5 and the vehicle frame longitudinal beam 1.

[0061] In some embodiments, the vehicle frame longitudinal beam 1 is provided with a mounting bracket 13. The mounting bracket 13 is formed with an outwardly open mounting groove 18. At least a part of the inner front end of the lower swing arm 5 extends into the mounting groove 18 to be connected to the mounting bracket 13 through a breakable connecting member.

[0062] Specifically, as Figure 2As shown, an installation bracket 13 can be arranged inside the longitudinal beam 1 of the vehicle frame. The installation bracket 13 can be connected to the longitudinal beam 1 of the vehicle frame by means of a connecting piece 14 or welding, etc. The longitudinal beam 1 of the vehicle frame and the installation bracket 13 can also be integrally formed, etc. And the installation bracket 13 is formed inside the longitudinal beam 1 of the vehicle frame and together with the longitudinal beam 1 of the vehicle frame forms an installation opening 12. The longitudinal beam 1 of the vehicle frame is also provided with a reinforcing plate around the installation opening 12, thereby ensuring the connection reliability.

[0063] Further, the installation bracket 13 forms an installation groove 18 that opens outward. At least a part of the inner front end of the lower swing arm 5 extends into the installation groove 18. That is, when the lower swing arm 5 is connected to the installation bracket 13, at least a part of the inner front end of the lower swing arm 5 can be placed in the installation groove 35 to ensure the connection reliability. And at least a part of the inner front end of the lower swing arm 5 is connected to the installation bracket 13 through a frangible connecting piece, so that a part of the frangible connecting piece can be placed in the installation groove 18 and passes through the inner front end of the lower swing arm 5. Furthermore, the installation bracket 13 can protect the periphery of the position to be sheared of the frangible connecting piece, and can avoid abnormal fracture and other situations of the frangible connecting piece, ensuring the connection reliability.

[0064] In some embodiments, the installation bracket 13 is detachably connected to the longitudinal beam 1 of the vehicle frame through a connecting piece 14. The longitudinal beam 1 of the vehicle frame forms a matching part 15. The connecting piece 14 can respectively pass through the longitudinal beam 1 of the vehicle frame and the installation bracket 13 and cooperate with the matching part 15, thereby connecting the longitudinal beam 1 of the vehicle frame and the installation bracket 13. That is, the installation bracket 13 can be separated from the longitudinal beam 1 of the vehicle frame. The installation bracket 13 can be connected to the longitudinal beam 1 of the vehicle frame through the connecting piece 14. The connecting piece 14 can be set as a bolt, etc. The setting cost is low and the installation is convenient. And the installation bracket 13 is connected to the longitudinal beam 1 of the vehicle frame through the connecting piece 14, so that the installation bracket 13 is detachable relative to the longitudinal beam 1 of the vehicle frame. And when the installation bracket 13 is damaged, the installation bracket 13 can be separated from the longitudinal beam 1 of the vehicle frame, and then the installation bracket 13 can be replaced, reducing the later maintenance cost.

[0065] In some embodiments, the installation bracket 13 includes a front side wall 131, a connecting wall 132 and a rear side wall 133. The front side wall 131 and the rear side wall 133 are distributed oppositely and are connected to the front and rear ends of the connecting wall 132 to jointly define the installation groove 18. The frangible connecting piece passes through the front side wall 131 and the rear side wall 133. At least one of the front side wall 131, the connecting wall 132 and the rear side wall 133 is connected to the inclined section 11.

[0066] Specifically, the longitudinal beam 1 of the vehicle frame is provided with an installation bracket 13. The lower swing arm 5 is connected to the longitudinal beam 1 of the vehicle frame through the installation bracket 13, and as Figure 2As shown, the mounting bracket 13 is provided with a front side wall 131, a connecting wall 132 and a rear side wall 133. The connecting wall 132 is connected between the front side wall 131 and the rear side wall 133. Both the front side wall 131 and the rear side wall 133 extend horizontally, and the connecting wall 132 extends in the front-rear direction. The front side wall 131 and the rear side wall 133 are distributed oppositely, and the front side wall 131 is connected to the front end of the connecting wall 132, and the rear side wall 133 is connected to the rear end of the connecting wall 132. The front side wall 131, the connecting wall 132 and the rear side wall 133 can jointly define a mounting groove 18 after being connected, and the mounting groove 18 can be used to accommodate the inner front end of the lower swing arm 5 to ensure the connection reliability.

[0067] Further, the frangible connecting member can be respectively passed through the mounting bracket 13 and the inner front end of the lower swing arm 5, and the inner front end of the lower swing arm 5 can be placed in the mounting groove 18. The frangible connecting member can be passed through the front side wall 131 and the rear side wall 133 in the front-rear direction. The front side wall 131 is provided with a first connection hole 1311, and the rear side wall 133 is provided with a second connection hole 1331. The frangible connecting member can be sequentially passed through the first connection hole 1311 and the second connection hole 1331 in the front-rear direction, that is, the frangible connecting member is partially placed in the mounting groove 18 and passed through the inner front end of the lower swing arm 5, so that the mounting bracket 13 can protect the periphery of the position to be sheared of the frangible connecting member, and can avoid abnormal fracture and other situations of the frangible connecting member, and ensure the connection reliability.

[0068] And at least one of the front side wall 131, the connecting wall 132 and the rear side wall 133 is connected to the inclined section 11 of the vehicle frame longitudinal beam 1 through a connecting member 14. That is, only one of the front side wall 131, the connecting wall 132 and the rear side wall 133 can be connected to the inclined section 11 through the connecting member 14, or two of the front side wall 131, the connecting wall 132 and the rear side wall 133 can be connected to the inclined section 11 through the connecting member 14, or the front side wall 131, the connecting wall 132 and the rear side wall 133 can all be connected to the inclined section 11 through the connecting member 14, which can improve the setting flexibility and ensure the connection reliability. Among them, the horizontal and the front-rear direction can be the positive horizontal and the positive front-rear direction, or can refer to the direction with a small included angle with the horizontal and the front-rear direction.

[0069] In some embodiments, the minimum width of the inner front end of the lower swing arm 5 is greater than the minimum width of the inner rear end of the lower swing arm 5.

[0070] Specifically, such as Figure 1As shown, an installation part 51 is provided at the front end of the inner side of the lower control arm 5. The installation part 51 can be placed in the installation opening 12, and then the lower control arm 5 and the longitudinal beam 1 of the vehicle frame are connected by a connecting bolt 6. The rear end of the inner side of the lower control arm 5 is movably connected to the longitudinal beam 1 of the vehicle frame, and the outer side of the lower control arm 5 is fixedly connected to the wheel. That is, one side of the front end of the lower control arm 5 can be movably connected to the inclined section 11 of the longitudinal beam 1 of the vehicle frame, and the other side can be relatively fixed to the wheel. Thus, the wheel can be movable relative to the inclined section 11 of the longitudinal beam 1 of the vehicle frame. When the vehicle is running, the force received by the wheel can be transmitted to the longitudinal beam 1 of the vehicle frame through the lower control arm 5. The minimum width of the front end of the inner side of the lower control arm 5 is set to be greater than the minimum width of the rear end of the inner side of the lower control arm 5, so that the structural strength of the front end of the inner side of the lower control arm 5 is greater than that of the rear end of the inner side of the lower control arm 5, thereby avoiding deformation and other conditions at the front end of the lower control arm 5 and extending the service life of the lower control arm 5.

[0071] In some embodiments, the longitudinal beam 1 of the vehicle frame includes a front beam section and a rear beam section 17. The front beam section is configured as the inclined section 11, and the rear beam section 17 extends in the front-rear direction. The front end of the inner side of the lower control arm 5 is movably connected to the front beam section through a breakable connecting member, and the rear end of the inner side of the lower control arm 5 is movably connected to the rear beam section 17.

[0072] Specifically, as Figure 1 shown, the subframe assembly 100 is provided with a longitudinal beam 1 of the vehicle frame. The lower control arm 5 is connected to the longitudinal beam 1 of the vehicle frame through a breakable connecting member. The longitudinal beam 1 of the vehicle frame is provided with a front beam section and a rear beam section 17. The rear end of the front beam section is connected to the front end of the rear beam section 17, and the front beam section is configured as the inclined section 11, that is, the front beam section is configured to extend obliquely inward from front to back. The rear beam section 17 can be arranged to extend in the front-rear direction, so that at least part of the longitudinal beam 1 of the vehicle frame is configured as the inclined section 11. The lower control arm 5 is connected to the front beam section through a breakable connecting member, and a reinforcing plate is arranged in the front beam section to ensure the connection reliability between the lower control arm 5 and the front beam section.

[0073] At the same time, the front end of the inner side of the lower control arm 5 is movably connected to the front beam section through a breakable connecting member, and the rear end of the inner side of the lower control arm 5 is movably connected to the rear beam section 17, thereby improving the connection reliability between the lower control arm 5 and the longitudinal beam 1 of the vehicle frame. Among them, the lower control arm 5 can be provided with a weight-reducing hole 52, thereby reducing the setting cost and improving the vehicle lightweight.

[0074] In some embodiments, there are two longitudinal beams 1 of the vehicle frame, and a cross beam 2 of the vehicle frame is connected between the two longitudinal beams 1; there are two lower control arms 5, and the two lower control arms 5 are correspondingly connected to the outer sides of the two longitudinal beams 1 of the vehicle frame.

[0075] Specifically, as Figure 1As shown in the figure, the subframe assembly 100 is provided with longitudinal frame beams 1. The longitudinal frame beams 1 are arranged inside the vehicle body and extend in the front-rear direction. There can be two longitudinal frame beams 1, and the two longitudinal frame beams 1 are spaced apart transversely, thus playing a load-bearing role. A frame cross beam 2 is arranged between the two longitudinal frame beams 1. The frame cross beam 2 extends transversely, and both ends of the frame cross beam 2 are connected to the two longitudinal frame beams 1 by means of welding or the like. Thus, it can provide all-round load-bearing for the vehicle body, and can also conduct and reduce vibrations during vehicle driving, ensuring the comfort of vehicle use.

[0076] Furthermore, there are also two lower control arms 5. The mounting portion 51 of the lower control arm 5 can extend into the mounting opening 12 of the longitudinal frame beam 1. Thus, the lower control arm 5 and the longitudinal frame beam 1 are connected by a connecting bolt 6. The two lower control arms 5 are connected in a one-to-one correspondence, and both of the two lower control arms 5 are respectively connected to the outer sides of the two longitudinal frame beams 1. The lower control arm 5 and the longitudinal frame beam 1 are both connected by a connecting bolt 6. That is, when a vehicle has an offset collision, the connecting bolts 6 in the two longitudinal frame beams 1 can be broken as the case may be, thus avoiding the intrusion of wheels and the like into the occupant compartment and ensuring the safety of vehicle use.

[0077] The present utility model also proposes a vehicle.

[0078] The vehicle according to the embodiment of the present utility model includes the subframe assembly 100 of any one of the above.

[0079] For the vehicle according to the embodiment of the present utility model, the lower control arm 5 is movably connected to the inclined section 11 of the longitudinal frame beam 1 by a breakable connecting member, and the breakable connecting member can be broken during a collision. Thus, the safety of vehicle use can be ensured. At the same time, only the breakable connecting member is broken during a collision, thus reducing the later maintenance cost of the vehicle, with better use effects and a wider scope of application.

[0080] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0081] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A subframe assembly, characterized in that: include: A frame longitudinal beam, at least a portion of which is an inclined section, and the inclined section is configured to extend outwardly from rear to front; A lower swing arm and a breakable connecting piece, wherein the inner front end of the lower swing arm is movably connected to the inclined section through the breakable connecting piece, the inner rear end of the lower swing arm is movably connected to the frame longitudinal beam, and the outer side of the lower swing arm is suitable for being fixed relative to the wheel; The breakable connector is configured to extend in the front-rear direction and form an angle with the extension direction of the inclined section, and the inclined section is suitable for acting on the breakable connector and causing the breakable connector to break during a collision.

2. The subframe assembly according to claim 1, characterized in that: The breakable connecting member is configured as a connecting bolt, and the inner front end of the lower swing arm is rotatably connected to the inclined section via the connecting bolt; The axis of the connecting bolt is along the front-rear direction, and the inclined section is suitable for generating a shear force on the connecting bolt along the radial direction of the connecting bolt during an offset collision.

3. The subframe assembly according to claim 2, characterized in that: The angle between the axial direction of the connecting bolt and the extending direction of the inclined section is less than 45°.

4. The subframe assembly according to claim 3, characterized in that: The angle between the axial direction of the connecting bolt and the extending direction of the inclined section is greater than 5°.

5. The subframe assembly according to claim 2, characterized in that: The frame longitudinal beam is provided with a mounting opening, the inner front end of the lower swing arm is formed with a mounting portion, the mounting portion extends to the mounting opening, and the connecting bolt passes through the mounting portion and is penetrated through the peripheral wall of the mounting opening.

6. The subframe assembly according to claim 5, characterized in that: The installation opening includes a front side wall and a rear side wall that are relatively distributed, and both ends of the connecting bolt are respectively penetrated through the front side wall and the rear side wall, and the shear strength of the front side wall and the rear side wall along the direction of the shear force is greater than the shear strength of the connecting bolt.

7. The subframe assembly according to claim 1, characterized in that: The frame longitudinal beam is provided with a mounting bracket, and the mounting bracket is formed with a mounting groove open outwardly, and at least a part of the inner front end of the lower swing arm extends into the mounting groove to be connected to the mounting bracket through the breakable connecting piece.

8. The subframe assembly according to claim 7, characterized in that: The mounting bracket is detachably connected to the frame longitudinal beam via a connecting member.

9. The subframe assembly according to claim 7, characterized in that: The mounting bracket includes a front side wall, a connecting wall and a rear side wall, the front side wall and the rear side wall are distributed opposite to each other and are connected to the front and rear ends of the connecting wall to jointly define the mounting groove, the breakable connecting piece is passed through the front side wall and the rear side wall, and at least one of the front side wall, the connecting wall and the rear side wall is connected to the inclined section.

10. The subframe assembly according to any one of claims 1 to 7, characterized in that: The frame longitudinal beam includes a front beam section and a rear beam section, the front beam section is constructed as the inclined section, and the rear beam section extends along the front-to-back direction, the inner front end of the lower swing arm is movably connected to the front beam section through the breakable connecting piece, and the inner rear end of the lower swing arm is movably connected to the rear beam section.

11. The subframe assembly according to any one of claims 1 to 7, characterized in that: There are two frame longitudinal beams, and a frame cross beam is connected between the two frame longitudinal beams; There are two lower swing arms, and the two lower swing arms are connected to the outer sides of the two frame longitudinal beams in a one-to-one correspondence.

12. A vehicle, characterized in that: The vehicle comprises the subframe assembly according to any one of claims 1 to 11.

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