Wheel corner module, driving system and vehicle

Abstract

The invention relates to the technical field of vehicles, and discloses a wheel corner module, a driving system and a vehicle, the wheel corner module comprises a wheel assembly, a control arm assembly, a sliding column and a plate spring, the control arm assembly is connected to one side of the wheel assembly, an upper control arm is arranged at the top of the control arm assembly, a lower control arm is arranged at the bottom of the control arm assembly, and the sliding column is connected with the upper control arm. The upper control arm is provided with an upper rotating connecting end, the lower control arm is provided with a lower rotating connecting end, and the rotating axis of the upper rotating connecting end and the rotating axis of the lower rotating connecting end extend in the horizontal direction and are parallel to each other. The bottom end of the sliding column is rotationally connected to the lower control arm, and the rotating axis of the sliding column is parallel to the rotating axis of the upper rotating connecting end. One end of the plate spring is connected with the lower control arm. According to the invention, the cabin space in the vehicle body is enlarged, the production process is simplified, and the overall elastic load and the structural stability during use are effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a wheel corner module, a drive system and a vehicle. Background Art

[0002] With the advancement of science and technology, some automobiles use wheel corner modules with integrated drive and rotation. The wheel corner modules need to be installed with motors for driving the tires to rotate and steering gears for driving the tires to steer. For each wheel corner module, the installation space required is relatively large, which results in the inability to effectively improve the structural parts used to provide elastic support in the wheel corner module, making it difficult to increase the load of the entire vehicle. In addition, since the wheel corner modules occupy a large space, it is not conducive to the release of space in the upper cabin of the vehicle. Therefore, there is an urgent need for a wheel corner module that can increase the load of the entire vehicle and has a more compact structure. Summary of the invention

[0003] The object of the present invention is to provide a wheel edge angle module, a drive system and a vehicle to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] A wheel corner module according to an embodiment of the first aspect of the present invention includes: Wheel assembly; A control arm assembly is connected to one side of the wheel assembly, an upper control arm is arranged on the top of the control arm assembly, a lower control arm is arranged on the bottom of the control arm assembly, an upper rotating connection end is arranged on the upper control arm, and a lower rotating connection end is arranged on the lower control arm, and a rotation axis of the upper rotating connection end and a rotation axis of the lower rotating connection end extend in a horizontal direction and are parallel to each other; A sliding column, the bottom end of which is rotatably connected to the lower control arm, and the rotation axis of the sliding column is parallel to the rotation axis of the upper rotation connection end; A leaf spring has one end connected to the lower control arm.

[0005] The technical solution has at least the following beneficial effects: the wheel assembly is mainly used to bear loads and rotate. During production and assembly, the wheel assembly is connected to the vehicle body of the external device through the upper rotating connection end and the lower rotating connection end of the control arm assembly and the sliding column, and a leaf spring is connected to the lower control arm to connect the leaf spring to the vehicle body of the external device. During operation, the upper rotating connection end and the lower rotating connection end can rotate around the vehicle body. The sliding column and the leaf spring can provide elastic bearing for the connection between the control arm assembly and the vehicle body. Since the leaf spring has the characteristic of providing a large load, the demand for the elastic support load capacity required by the sliding column can be reduced at this time, thereby reducing the demand for the vertical space layout of the wheel corner module, which is beneficial to expanding the cabin space in the vehicle body. In addition, since there is no need to install a buffer structure such as a coil spring on the sliding column, the production process is simplified, and the influence of processing operations such as welding and thermal deformation on the internal structure of the sliding column during production is reduced, effectively improving the overall elastic load and structural stability during use.

[0006] According to some embodiments of the present invention, the wheel corner module of the present invention further includes a buffer block, and the buffer block is connected between the leaf spring and the lower control arm.

[0007] According to some embodiments of the present invention, the buffer block includes an upper plate, a lower plate, and an elastomer connected between the upper plate and the lower plate, the upper plate is connected to the bottom side of the leaf spring, the lower plate is connected to the top side of the lower control arm, the top side of the upper plate is connected to an upper screw rod, the bottom side of the lower plate is connected to a lower screw rod, the upper screw rod passes through the leaf spring upward and is connected to an upper nut, and the lower screw rod passes through the lower control arm downward and is connected to a lower nut.

[0008] According to some embodiments of the present invention, friction-reducing pads are respectively connected to the upper and lower sides of the leaf spring.

[0009] According to some embodiments of the present invention, the friction reducing pad located at the lower side of the leaf spring is a lower friction reducing layer, and the lower surface of the lower friction reducing layer is covered with a cover plate.

[0010] According to some embodiments of the present invention, a lifting section and a connecting section are sequentially formed at the end of the leaf spring in a direction away from the center thereof, the lifting section extends obliquely upward away from the center of the leaf spring, and the connecting section is connected to the lower control arm.

[0011] According to some embodiments of the present invention, the control arm assembly includes a bogie, a steering gear and a steering knuckle, the upper control arm is rotatably connected to the bogie, the rotation axis of the upper control arm and the upper rotation connection end are parallel to each other, the steering gear is connected to the bogie, the output end of the steering gear passes downward through the bogie and is connected to the steering knuckle, the wheel assembly is connected to the steering knuckle, one side of the wheel assembly is connected to the steering knuckle, one side of the wheel assembly is rotatably connected to the lower control arm, and the rotation axis of the steering knuckle coincides with the rotation axis of the wheel assembly.

[0012] According to some embodiments of the present invention, the wheel assembly includes a hub motor and a wheel hub, the hub motor is connected to the wheel hub, a plurality of first connecting columns are provided on a side of the hub motor close to the steering knuckle, a plurality of first bolts are connected to the steering knuckle, a plurality of first bolts are passed through the steering knuckle and are respectively connected to a plurality of first connecting columns, a connecting seat is provided on the bottom side of the hub motor, and the end of the lower control arm away from the leaf spring is rotatably connected to the connecting seat.

[0013] According to some embodiments of the present invention, the connecting seat includes a connecting plate and a plurality of second connecting columns, the plurality of second connecting columns are arranged on the bottom side of the hub motor, a plurality of second bolts are passed through the connecting plate, the plurality of second bolts are respectively connected to the plurality of second connecting columns, a ball pin is connected to one end of the lower control arm away from the leaf spring, and the spherical pin of the ball pin is connected to the connecting plate.

[0014] According to some embodiments of the present invention, the upper control arm is formed with two upper connecting rods in a direction away from the wheel assembly, the two upper connecting rods are arranged at intervals in a horizontal direction, the sliding column passes through the two upper connecting rods, and the ends of the two upper connecting rods are respectively provided with the upper rotating connecting ends.

[0015] According to some embodiments of the present invention, the lower control arm is formed with two lower connecting rods in a direction away from the sliding column, the two lower connecting rods are arranged at intervals in the horizontal direction, and the ends of the two lower connecting rods are respectively provided with the lower rotating connecting ends.

[0016] According to some embodiments of the present invention, the sliding column is a hydraulic damping shock absorber.

[0017] A driving system according to an embodiment of the second aspect of the present invention includes a frame and the above-mentioned wheel corner module, the upper rotating connection end and the lower rotating connection end are respectively rotatably connected to the frame, the top end of the sliding column is connected to the top of the frame, the leaf spring is connected to the frame, and two wheel corner modules are provided, and the two wheel corner modules are symmetrically arranged on the frame along the left-right direction.

[0018] This technical solution has at least the following beneficial effects: the frame is connected to the body of the peripheral device, and the body uses the drive system to provide power for straight-line and turning travel, and uses the sliding column and leaf spring in the wheel corner module to provide elastic bearing for the connection between the control arm assembly and the body. Since the leaf spring has the characteristic of providing a larger load, the elastic support load capacity required by the sliding column can be reduced, thereby reducing the vertical space layout requirements of the wheel corner module, which is conducive to expanding the cabin space in the vehicle body. In addition, since there is no need to install buffer structures such as coil springs on the sliding column, the production process is simplified, and the impact of processing operations such as welding and thermal deformation on the internal structure of the sliding column during production is reduced, effectively improving the overall elastic load and structural stability during use.

[0019] According to some embodiments of the present invention, the leaf spring in the two wheel corner modules is the same.

[0020] A vehicle according to an embodiment of the third aspect of the present invention comprises the above-mentioned drive system.

[0021] This technical solution has at least the following beneficial effects: in this vehicle, the sliding column and the leaf spring in the wheel corner module can provide elastic bearing for the connection between the control arm assembly and the vehicle body. Since the leaf spring has the characteristic of providing a large load, the elastic support load capacity required by the sliding column can be reduced, thereby reducing the vertical space layout requirements of the wheel corner module, which is beneficial to expanding the cabin space in the vehicle body. In addition, since there is no need to install buffer structures such as coil springs on the sliding column, the production process is simplified, and the impact of processing operations such as welding and thermal deformation on the internal structure of the sliding column during production is reduced, effectively improving the overall elastic load and structural stability during use.

[0022] Additional aspects and advantages of the present invention will be described in part in the following description and will be apparent from the following description. This disclosure may be apparent or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0024] Figure 1 This is a three-dimensional diagram of the wheel corner module of the present invention.

[0025] Figure 2 yes Figure 1 A is a partial enlarged schematic diagram of .

[0026] Figure 3 yes Figure 1 B is a partial enlarged schematic diagram.

[0027] Figure 4 yes Figure 1 A partial enlarged schematic diagram of C.

[0028] Figure 5 It is a three-dimensional diagram of the drive system of the present invention.

[0029] In the accompanying drawings: 100-wheel assembly, 110-hub motor, 111-second connecting column, 112-connecting plate, 113-second bolt, 200-control arm assembly, 210-upper control arm, 211-upper rotating connection end, 220-lower control arm, 221-lower rotating connection end, 222-ball pin, 223-lower connecting rod, 230-bogie, 240-steering gear, 250-steering knuckle, 300-sliding column, 400-leaf spring, 410-lifting section, 420-connecting section, 500-buffer block, 510-lower plate, 520-elastic body, 530-upper screw, 610-friction reducing pad, 620-cover plate, 700-frame. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] Reference Figure 1 A wheel corner module according to an embodiment of the first aspect of the present invention comprises a wheel assembly 100, a control arm assembly 200, a sliding column 300 and a leaf spring 400, wherein: The control arm assembly 200 is connected to one side of the wheel assembly 100. An upper control arm 210 is disposed on the top of the control arm assembly 200, and a lower control arm 220 is disposed on the bottom of the control arm assembly. An upper rotating connection end 211 is disposed on the upper control arm 210, and a lower rotating connection end 221 is disposed on the lower control arm 220. The rotation axis of the upper rotating connection end 211 and the rotation axis of the lower rotating connection end 221 extend in the horizontal direction and are parallel to each other, as shown in FIG. Figure 1 The dotted line passing through the upper rotating connection end 211 indicates the rotation axis of the upper rotating connection end 211, and the dotted line passing through the lower rotating connection end 221 indicates the rotation axis of the lower rotating connection end 221. The upper rotating connection end 211 and the lower rotating connection end 221 are mainly used to be connected to the external frame 700, so that the wheel assembly 100 has the freedom of upward and downward movement relative to the frame 700 to adjust the vehicle height and improve the driving comfort; The bottom end of the sliding column 300 is rotatably connected to the lower control arm 220, and the top end of the sliding column 300 is rotatably connected to the external vehicle frame 700. The rotation axis of the sliding column 300 and the rotation axis of the upper rotation connection end 211 are parallel to each other. Figure 1 The dotted line passing through the sliding column 300 is the rotation axis of the sliding column 300; One end of the leaf spring 400 is disposed on the lower control arm 220 , and the leaf spring 400 itself is relatively fixed to an external vehicle frame 700 .

[0035] As can be seen from the above, the wheel assembly 100 is mainly used to bear loads and rotate. During production and assembly, the wheel assembly 100 is connected to the vehicle body of the external device through the upper rotating connection end 211, the lower rotating connection end 221 and the slide column 300 of the control arm assembly 200, and a leaf spring 400 is connected to the lower control arm 220. The leaf spring 400 is connected to the vehicle body of the external device. During operation, the upper rotating connection end 211 and the lower rotating connection end 221 can rotate around the vehicle body, and the connection between the control arm assembly 200 and the vehicle body can be adjusted by using the slide column 300 and the leaf spring 400. Providing elastic bearing, since the leaf spring 400 has the characteristic of providing a large bearing, the elastic supporting load capacity required by the slide column 300 can be reduced at this time, thereby reducing the vertical space layout requirements of the wheel corner module, which is beneficial to expanding the cabin space in the vehicle body, and since there is no need to install buffer structures such as coil springs on the slide column 300, the production process is simplified, and the impact of processing operations such as welding and thermal deformation on the internal structure of the slide column 300 during production is reduced, effectively improving the overall elastic load and structural stability during use.

[0036] In order to improve the elastic support function provided by the leaf spring 400 to the lower control arm 220, in this embodiment, the wheel corner module of the present invention further includes a buffer block 500, and the buffer block 500 is connected between the leaf spring 400 and the lower control arm 220. The buffer block 500 can provide an elastic connection between the leaf spring 400 and the lower control arm 220, and further enhance the elastic support provided to the lower control arm 220.

[0037] There are various structural forms of the buffer block 500. As an embodiment 1 of the buffer block 500, the buffer block 500 can be a spring connected between the leaf spring 400 and the lower control arm 220. In order to improve the stability of the spring, a rod body can be passed between the leaf spring 400 and the lower control arm 220, and the rod body can be passed through the spring to prevent the spring from twisting and deflecting.

[0038] like Figure 2As shown, as the second embodiment of the buffer block 500, the buffer block 500 may only include an elastic body 520 such as rubber, and the elastic body 520 may be directly connected between the leaf spring 400 and the lower control arm 220. In order to improve the stability of connecting the elastic body 520 between the leaf spring 400 and the lower control arm 220, the buffer block 500 includes an upper plate, a lower plate 510, and an elastic body 520 connected between the upper plate and the lower plate 510. The upper plate is connected to the bottom side of the leaf spring 400, and the lower plate 510 is connected to the top side of the lower control arm 220. The top side of the upper plate is connected to an upper screw rod 530, and the bottom side of the lower plate 510 is connected to a lower screw rod. The upper screw rod 530 passes through the leaf spring 400 upward and is connected to an upper nut, and the lower screw rod passes through the lower control arm 220 downward and is connected to a lower nut. During production, the upper screw rod 530 and the upper plate can be an integrally formed structure, or the upper screw rod 530 can be fixed to the upper plate by welding, interference fit, etc. Similarly, the lower screw rod and the lower plate 510 can also be an integrally formed structure, or the lower screw rod can be fixed to the lower plate 510 by welding, interference fit, etc., and the rubber elastomer 520 can be directly vulcanized and formed between the upper plate and the lower plate 510. The combination forms a whole, the upper screw rod 530 is passed through the preset hole position on the leaf spring 400, and the upper nut is connected to the portion of the upper screw rod 530 protruding from the leaf spring 400, and the leaf spring 400 is pressed and fixed to the upper plate by the upper nut. Similarly, the lower screw rod is passed through the preset hole position of the lower control arm 220, and the lower nut is connected to the portion of the lower screw rod protruding from the lower control arm 220, and the control arm and the lower plate 510 are pressed and fixed to each other by the lower nut. By utilizing the elastic body 520 in this way, it can be ensured that when the wheel corner module is subjected to lateral force, relative displacement is allowed between the lower control arm 220 and the leaf spring 400, thereby improving the yield performance of the entire wheel corner module and ensuring smoothness; when the suspension is subjected to a large lateral force, the lateral stiffness of the elastic body 520 increases sharply, and the relative displacement between the lower control arm 220 and the leaf spring 400 reaches a maximum value. At this time, the leaf spring 400 is equivalent to forming another lower control arm 220, which can provide lateral support, so that sufficient lateral force can be provided to ensure the overall stability of the vehicle chassis.

[0039] When the leaf spring 400 is connected to the external frame 700, the leaf spring 400 and the frame 700 can be directly connected and fixed by a rigid connecting piece. In order to further improve the structural stability of the leaf spring 400 at the position connected to the frame 700, as shown in FIG. Figure 3As shown, in this embodiment, the upper and lower sides of the leaf spring 400 are respectively connected with friction-reducing pads 610, and the friction-reducing pads 610 cover at least part of the upper surface and at least part of the lower surface of the leaf spring 400. During installation, the external connecting piece passes through the friction-reducing pad 610 located at the bottom side of the leaf spring 400, the leaf spring 400, and the friction-reducing pad 610 located at the top side of the leaf spring 400, and then is connected to the frame 700, so that the leaf spring 400 and the frame 700 are pressed and fixed to each other, the leaf spring 400 contacts the frame 700 through the friction-reducing pad 610 on the top side, and the connecting piece contacts the leaf spring 400 through the friction-reducing pad 610 on the top side, so that a pre-tightening force can be provided when the connecting piece is connected, so that the connecting piece is installed more stably, and the friction between the leaf spring 400 and the connecting piece and the frame 700 is reduced, and the abnormal noise caused by the friction between the leaf spring 400 and the connecting piece of the frame 700 during the up and down movement of the leaf spring 400 is reduced, and the service life of the leaf spring 400 is increased.

[0040] In order to improve the stability when the connecting member presses the friction-reducing pad 610 located at the bottom side against the bottom side of the leaf spring 400, in this embodiment, the friction-reducing pad 610 located at the bottom side of the leaf spring 400 is a lower friction-reducing layer, and the lower surface of the lower friction-reducing layer is covered with a cover plate 620. During assembly, the connecting member applies pressure on the cover plate 620, and the leaf spring 400 is pressed by the cover plate 620 and the friction-reducing pad 610 located at the bottom side, which can reduce the risk of the connecting member damaging the friction-reducing pad 610 when connected and fixed, and further improve the overall structural stability during use.

[0041] The leaf spring 400 may be a whole plate extending in a straight line, or a plate with a certain curvature. In this embodiment, in order to better arrange the overall structure reasonably and reduce the space occupied by the wheel corner module during installation, in this embodiment, the end of the leaf spring 400 is sequentially formed with a lifting section 410 and a connecting section 420 in a direction away from the center thereof. The lifting section 410 extends upwardly in an inclined manner away from the center of the leaf spring 400, and the connecting section 420 is arranged on the lower control arm 220. In this way, the leaf spring 400 forms a structure that avoids the connection position of the lower control arm 220 at the positions of the lifting section 410 and the connecting section 420. During installation, the leaf spring 400 is raised at the positions of the lifting section 410 and the connecting section 420, and the installation point where the leaf spring 400 is connected and fixed with the lower control arm 220 is raised. In particular, when the buffer block 500 needs to be installed between the leaf spring 400 and the lower control arm 220, the buffer block 500 can be avoided, so as to better save the vertical space of the wheel corner module.

[0042] The control arm assembly 200 is mainly used to connect the wheel assembly 100. As a specific structural embodiment thereof, the control arm assembly 200 includes a bogie 230, a steering gear 240 and a steering knuckle 250. The upper control arm 210 is rotatably connected to the bogie 230. The rotation axis of the upper control arm 210 and the upper rotation connection end 211 are parallel to each other. The steering gear 240 is connected to the bogie 230. The output end of the steering gear 240 passes downward through the bogie 230 and is connected to the steering knuckle 250. The wheel assembly 100 is connected to the steering knuckle 250. One side of the wheel assembly 100 is connected to the steering knuckle 250. One side of the wheel assembly 100 is rotatably connected to the lower control arm 220. The rotation axis of the steering knuckle 250 and the rotation axis of the wheel assembly 100 are located on the same straight line, as shown in FIG. Figure 1 The dotted line passing through the steering knuckle 250 is shown as the rotation axis of the steering knuckle 250. The steering gear 240 is a driving steering structure with a reduction motor, which is fixedly mounted on the bogie 230. The output end of the steering gear 240 passes downward through the bogie 230 and is connected to the steering knuckle 250. The steering knuckle 250 is driven to rotate by the steering gear 240. Since the steering knuckle 250 is relatively fixedly connected to the wheel assembly 100, and the rotation axis of the steering knuckle 250 and the rotation axis of the wheel assembly 100 on the lower control arm 220 are located on the same straight line, the wheel assembly 100 can be driven to rotate on the lower control arm 220 by the steering knuckle 250 to realize the steering function of the vehicle.

[0043] In actual applications, the shell of the steering gear 240 is connected and fixed to the bogie 230 by bolts. The output end of the steering gear 240 converts the required steering angle of the vehicle into the rotation angle of the reduction motor inside the steering gear 240 by interacting with the vehicle domain controller signal, and realizes large torque output from the output end by reducing speed and increasing torque. A plurality of holes are evenly arranged on the top of the steering knuckle 250. The output end of the steering gear 240 is respectively connected to the plurality of holes on the steering knuckle 250 by a plurality of bolts, and the output end of the steering gear 240 and the steering knuckle 250 are connected and fixed to each other, thereby realizing power transmission.

[0044] When the vehicle has wheel hop, the lower control arm 220 drives the leaf spring 400 to warp and deform through the buffer block 500, and realizes vertical load bearing through the internal force of the leaf spring 400. The upper end of the sliding column 300 is connected to the frame 700, and the lower end of the sliding column 300 is connected to the lower control arm 220 to realize vertical damping control of the vehicle; the steering gear 240 is fixed on the bogie 230, and the output end of the steering gear 240 for outputting torque is connected to the steering knuckle 250. The torque is finally applied to the steering knuckle 250 from the reduction motor in the steering gear 240 through various levels of reduction mechanisms to realize the steering of the vehicle. The output axis of the steering gear 240 for outputting torque is the rotational motion axis of the wheel during steering, that is, the kingpin axis. By arranging the wheel assembly 100, it is ensured that the static lower kingpin axis is connected to the position of the lower control arm 220 through the rotation of the wheel assembly 100. In addition, when the vehicle has wheel hop, the upper control arm 210 swings up and down around the rotation axis of the connection position with the vehicle body, and the steering knuckle 250 swings up and down around the rotation axis of the connection position with the upper control arm 210, realizing the overall configuration movement freedom while ensuring that the kingpin axis is always in line with the rotation axis of the wheel assembly 100 at the connection position of the lower control arm 220, so as to achieve the most effective effect of the steering torque during wheel hop. Based on the above structural characteristics, the wheel hop and steering movement decoupling control of the wheel corner module is finally realized.

[0045] A driving source is configured in the wheel assembly 100 to drive the rotational movement of the wheel. Specifically, the wheel assembly 100 includes a hub motor 110 and a wheel hub. The hub motor 110 is connected to the wheel hub. A plurality of first connecting columns are provided on the side of the hub motor 110 close to the steering knuckle 250. A plurality of first bolts are connected to the steering knuckle 250. The plurality of first bolts pass through the steering knuckle 250 and are respectively connected to the plurality of first connecting columns. A connecting seat is provided on the bottom side of the hub motor 110, and one end of the lower control arm 220 away from the leaf spring 400 is rotatably connected to the connecting seat. The shell of the wheel hub motor 110 itself can be used as a structure connected and fixed with the steering knuckle 250. In order to improve the convenience and stability of the connection between the wheel hub motor 110 and the steering knuckle 250, a plurality of first connecting columns are provided on the outer side of the wheel hub motor 110, that is, a plurality of first connecting columns are provided on the shell of the wheel hub motor 110. At this time, the plurality of first connecting columns form a positioning fulcrum connected with the steering knuckle 250. Through the cooperation of the plurality of first connecting columns and the steering knuckle 250, the steering knuckle 250 can be quickly connected and positioned, and a plurality of first bolts are passed through the steering knuckle 250 and connected to the plurality of first connecting columns, so that the steering knuckle 250 and the wheel hub motor 110 are pressed and fixed to each other. Similarly, for the rotational connection between the wheel hub motor 110 and the lower control arm 220, a connecting seat can be directly formed on the shell of the wheel hub motor 110, so that the installation and positioning area of ​​the lower control arm 220 and the connecting seat can be increased, and the stability of the rotational connection of the wheel hub motor 110 on the lower control arm 220 can be improved.

[0046] The connection seat can be a solid structure formed outside the wheel hub motor 110, in order to reduce costs and reduce weight, such as Figure 4 As shown, in this embodiment, the connecting seat includes a second connecting column 111 and a connecting plate 112. A plurality of second connecting columns 111 are formed on the bottom side of the hub motor 110. A plurality of second bolts 113 are passed through the connecting plate 112. The plurality of second bolts 113 are respectively connected to the plurality of second connecting columns 111. A ball pin 222 is connected to one end of the lower control arm 220 away from the leaf spring 400. The spherical pin of the ball pin 222 is connected to the connecting plate 112. A plurality of second connecting columns 111 are formed on the bottom side of the housing of the wheel hub motor 110. At this time, the plurality of second connecting columns 111 can form a plurality of fulcrums for connecting and positioning the connecting plate 112, so that the connecting plate 112 can be quickly connected and aligned with the second connecting columns 111. During assembly, the connecting plate 112 is first rotatably connected to the end of the lower control arm 220. Specifically, a ball pin 222 is connected to one end of the lower control arm 220. The ball seat of the ball pin 222 is installed at the end of the lower control arm 220. One end of the ball pin of the ball pin 222 can rotate in the ball seat, and the other end passes through the connecting plate 112. 2, the ball pin is locked and fixed to the connecting plate 112 through the nut, and then multiple second bolts 113 pass through the connecting plate 112 and are respectively connected to multiple second connecting columns 111, so that the connecting plate 112 is locked and fixed to the bottom side of the hub motor 110. In this way, the ball head pin 222 provides the wheel side assembly with a rotational freedom around the main pin axis to ensure the smooth output of the steering torque. In actual application, after the ball pin of the ball head is matched with the hole position of the connecting plate 112, four second connecting columns 111 are arranged around the ball pin to jointly bear the various loads of the wheel side from the ground.

[0047] In practical applications, an upper rotation connection end 211 is provided at one end of the upper control arm 210 away from the wheel assembly 100, and is used to connect to the frame 700. In order to improve the stability of the rotation connection, the number of the upper rotation connection ends 211 can be two. Therefore, the upper control arm 210 is formed with two upper connecting rods in the direction away from the wheel assembly 100. The two upper connecting rods are arranged at intervals in the horizontal direction. The sliding column 300 passes through the two upper connecting rods, and the ends of the two upper connecting rods are respectively provided with upper rotation connection ends 211. When the two upper connecting rods are connected to the frame 700, two rotation fulcrums can be formed, so that the upper control arm 210 rotates around the rotation connection of the frame 700. In practical applications, an upper bushing is provided at the end of the upper connecting rod away from the wheel assembly 100. The upper bushing serves as the upper rotation connection end 211. The rotation connection position of the upper bushing is taken as the rotation axis of the upper control arm 210, so that the upper control arm 210 rotates around the frame 700.

[0048] Similarly, a lower rotating connection end 221 is provided at one end of the lower control arm 220 away from the wheel assembly 100, and is used to be connected to the frame 700. In order to improve the stability of the rotating connection, the number of the lower rotating connection ends 221 can be two. Therefore, the lower control arm 220 is formed with two lower connecting rods 223 in the direction away from the sliding column 300. The lower connecting rods 223 are arranged at intervals in the horizontal direction, and the ends of the two lower connecting rods 223 are respectively provided with lower rotating connection ends 221. When the two lower connecting rods 223 are connected to the frame 700, two rotating fulcrums can be formed, so that the lower control arm 220 rotates around the rotating connection of the frame 700. In actual application, a lower bushing is provided at the end of the lower connecting rod 223 away from the wheel assembly 100, and the lower bushing serves as the lower rotating connection end 221. The rotating connection position of the lower bushing is taken as the rotation axis of the lower control arm 220, and the lower bushing is connected to the lower part of the frame 700, so that the lower control arm 220 rotates around the frame 700.

[0049] Since the wheel corner module has leaf spring 400 auxiliary elastic support, the load required by the sliding column 300 is reduced, and the sliding column 300 can select a conventional buffer auxiliary support structure, for example, the sliding column 300 is a hydraulic damping shock absorber. The hydraulic damping shock absorber can enhance the bearing capacity of the wheel corner module and improve the smoothness and handling stability during operation.

[0050] A driving system according to a second aspect of an embodiment of the present invention, such as Figure 5 As shown, it includes a frame 700 and the above-mentioned wheel corner module, the upper rotating connection end 211 and the lower rotating connection end 221 are respectively rotatably connected to the frame 700, the top end of the slide column 300 is connected to the top of the frame 700, the leaf spring 400 is connected to the frame 700, and two wheel corner modules are provided, and the two wheel corner modules are symmetrically arranged on the frame 700 along the left-right direction.

[0051] In this drive system, the frame 700 is connected to the body of the external device. At this time, the body uses the drive system to provide power for straight-line and turning travel, and uses the slide column 300 and the leaf spring 400 in the wheel corner module to provide elastic bearing for the connection between the control arm assembly 200 and the body. Since the leaf spring 400 has the characteristic of providing a larger load, the elastic support load capacity required by the slide column 300 can be reduced at this time, thereby reducing the vertical space layout requirements of the wheel corner module, which is conducive to expanding the cabin space in the vehicle body. In addition, since there is no need to install buffer structures such as coil springs on the slide column 300, the production process is simplified, and the impact of processing operations such as welding and thermal deformation on the internal structure of the slide column 300 during production is reduced, effectively improving the overall elastic load and structural stability during use.

[0052] In the above embodiment, different wheel corner modules can be respectively configured with a leaf spring 400, and the two leaf springs 400 are respectively connected to the frame 700. When working, the two wheel corner modules respectively realize elastic load and buffering through the two leaf springs 400, or the two wheel corner modules only use one leaf spring 400. At this time, the leaf spring 400 in the two wheel corner modules is the same, and the length of the leaf spring 400 is longer, which can produce greater elastic deformation. When working, the loads received by the two wheel corner modules can be transmitted to the middle part of the leaf spring 400, and can offset each other, so as to better eliminate the internal stress of the leaf spring 400.

[0053] A vehicle according to an embodiment of the third aspect of the present invention includes the above-mentioned drive system. The vehicle can be a private car, such as a sedan, SUV, MPV or pickup truck. The vehicle can also be an operating vehicle, such as a van, bus, small truck or large trailer. The vehicle needs to have an electric motor that can output power or store mechanical energy as a generator. When the vehicle is a new energy vehicle, it can be a hybrid vehicle or a pure electric vehicle.

[0054] In this vehicle, the sliding column 300 and the leaf spring 400 in the wheel corner module can provide elastic bearing for the connection between the control arm assembly 200 and the vehicle body. Since the leaf spring 400 has the characteristic of providing a large load, the elastic support load capacity required by the sliding column 300 can be reduced, thereby reducing the vertical space layout requirements of the wheel corner module, which is beneficial to expanding the cabin space in the vehicle body. In addition, since there is no need to install buffer structures such as coil springs on the sliding column 300, the production process is simplified, and the impact of processing operations such as welding and thermal deformation on the internal structure of the sliding column 300 during production is reduced, effectively improving the overall elastic load and structural stability during use.

[0055] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A wheel corner module, characterized in that: include: Wheel assembly (100); A control arm assembly (200) is connected to one side of the wheel assembly (100); an upper control arm (210) is arranged at the top of the control arm assembly (200); a lower control arm (220) is arranged at the bottom of the control arm assembly; an upper rotating connection end (211) is arranged on the upper control arm (210); a lower rotating connection end (221) is arranged on the lower control arm (220); a rotation axis of the upper rotating connection end (211) and a rotation axis of the lower rotating connection end (221) extend in a horizontal direction and are parallel to each other; A sliding column (300), the bottom end of which is rotatably connected to the lower control arm (220), and the rotation axis of the sliding column (300) and the rotation axis of the upper rotation connection end (211) are parallel to each other; A leaf spring (400) has one end connected to the lower control arm (220).

2. A wheel corner module according to claim 1, characterized in that: The wheel corner module further comprises a buffer block (500), wherein the buffer block (500) is connected between the leaf spring (400) and the lower control arm (220).

3. A wheel corner module according to claim 2, characterized in that: The buffer block (500) comprises an upper plate, a lower plate (510), and an elastic body (520) connected between the upper plate and the lower plate (510), the upper plate being connected to the bottom side of the leaf spring (400), the lower plate (510) being connected to the top side of the lower control arm (220), the top side of the upper plate being connected to an upper screw rod (530), the bottom side of the lower plate (510) being connected to a lower screw rod, the upper screw rod (530) passing through the leaf spring (400) upwards and being connected to an upper nut, and the lower screw rod passing through the lower control arm (220) downwards and being connected to a lower nut.

4. A wheel corner module according to claim 1, characterized in that: Friction-reducing pads (610) are respectively connected to the upper and lower sides of the leaf spring (400).

5. A wheel corner module according to claim 4, characterized in that: The friction-reducing pad (610) located at the lower side of the leaf spring (400) is a lower friction-reducing layer, and the lower surface of the lower friction-reducing layer is covered with a cover plate (620).

6. A wheel corner module according to claim 4, characterized in that: The end of the leaf spring (400) is sequentially formed with a lifting section (410) and a connecting section (420) in a direction away from the center thereof; the lifting section (410) extends obliquely upward away from the center of the leaf spring (400); and the connecting section (420) is connected to the lower control arm (220).

7. The wheel corner module according to claim 1, characterized in that: The control arm assembly (200) comprises a bogie (230), a steering gear (240) and a steering knuckle (250); the upper control arm (210) is rotatably connected to the bogie (230); the rotation axis of the upper control arm (210) and the upper rotation connection end (211) are parallel to each other; the steering gear (240) is connected to the bogie (230); the output end of the steering gear (240) passes downward through the bogie (230) and is connected to the steering knuckle (250); the wheel assembly (100) is connected to the steering knuckle (250); one side of the wheel assembly (100) is connected to the steering knuckle (250); one side of the wheel assembly (100) is rotatably connected to the lower control arm (220); the rotation axis of the steering knuckle (250) coincides with the rotation axis of the wheel assembly (100).

8. A wheel corner module according to claim 7, characterized in that: The wheel assembly (100) comprises a wheel hub motor (110) and a wheel hub, the wheel hub motor (110) being connected to the wheel hub, a plurality of first connection columns being provided on a side of the wheel hub motor (110) close to the steering knuckle (250), a plurality of first bolts being connected to the steering knuckle (250), the plurality of first bolts being passed through the steering knuckle (250) and respectively connected to the plurality of first connection columns, a connection seat being provided on the bottom side of the wheel hub motor (110), and an end of the lower control arm (220) being rotatably connected to the connection seat away from the leaf spring (400).

9. A wheel corner module according to claim 8, characterized in that: The connecting seat comprises a connecting plate (112) and a plurality of second connecting columns (111), the plurality of second connecting columns (111) being arranged on the bottom side of the wheel hub motor (110), the connecting plate (112) being provided with a plurality of second bolts (113), the plurality of second bolts (113) being respectively connected to the plurality of second connecting columns (111), and the end of the lower control arm (220) away from the leaf spring (400) being connected to a ball pin (222), the spherical pin of the ball pin (222) being connected to the connecting plate (112).

10. The wheel corner module according to claim 1, characterized in that: The upper control arm (210) is formed with two upper connecting rods in a direction away from the wheel assembly (100), the two upper connecting rods being arranged at intervals in the horizontal direction, the sliding column (300) passing through the two upper connecting rods, and the ends of the two upper connecting rods are respectively provided with the upper rotating connecting ends (211).

11. The wheel corner module according to claim 1, characterized in that: The lower control arm (220) is formed with two lower connecting rods (223) in a direction away from the sliding column (300), the two lower connecting rods (223) are arranged at intervals in the horizontal direction, and the ends of the two lower connecting rods (223) are respectively provided with the lower rotating connecting ends (221).

12. A wheel corner module according to claim 1, characterized in that: The sliding column (300) is a hydraulic damping shock absorber.

13. A driving system, characterized in that: The invention comprises a vehicle frame (700), and the wheel corner module according to any one of claims 1 to 12, wherein the upper rotating connection end (211) and the lower rotating connection end (221) are respectively rotatably connected to the vehicle frame (700), the top end of the sliding column (300) is connected to the top of the vehicle frame (700), the leaf spring (400) is connected to the vehicle frame (700), and two wheel corner modules are provided, and the two wheel corner modules are symmetrically arranged on the vehicle frame (700) along the left-right direction.

14. A driving system according to claim 13, characterized in that: The leaf spring (400) in the two wheel corner modules is the same.

15. A vehicle, characterized in that: Comprising the drive system as claimed in claim 14.

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