Rear suspension hub motor hub integrated structure, assembling method and automobile

Abstract

The invention relates to the technical field of automobile part structures, in particular to a rear suspension hub motor wheel edge integrated structure, an assembling method and an automobile. Comprising a rim, a hub motor, a rear suspension and a brake, and the rim is of a hollow annular structure; the hub motor is located on the inner side of the rim and comprises an outer rotor shell fixed to the end, away from the vehicle body, of the rim and a stator shell arranged on the outer rotor shell. One end, close to a vehicle body, of the stator shell is positioned on the axial inner side of a rim; the rear suspension comprises a joint head fixedly connected with the end, close to the vehicle body, of the stator shell. The brake comprises brake calipers fixedly connected with the joint head and a brake disc connected with one end, close to the automobile body, of the outer rotor shell. According to the rear suspension hub motor wheel edge integration structure, the hub motor is completely integrated in the rim, enough assembly space is reserved for the wheel edge, arrangement of a rear suspension and a pipeline is facilitated, meanwhile, a plurality of connectors are reserved, and assembly of the rear suspension and the pipeline is greatly facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of automobile component structures, and in particular to a rear suspension hub motor wheel edge integrated structure, an assembly method and an automobile. Background Art

[0002] At present, the application scope of hub motors is mainly small electric vehicles, such as electric cars, electric bicycles, electric scooters, and special vehicles. However, due to structural reasons, the existing hub motors still have certain defects. These defects include but are not limited to space share, load capacity, output reliability and working stability. In particular, in terms of space share, most of the chassis space needs to be occupied to meet the installation requirements of the hub motor, resulting in too small battery installation space, which greatly reduces the battery life.

[0003] In order to solve the above problems, the prior art currently proposes a hub motor structure, which includes a motor rotor, a motor stator, a spindle assembly, a joint head and a brake; the motor rotor includes a first spoke portion, and the motor stator includes a second spoke portion; the first spoke portion and the second spoke portion are coaxially sleeved on the spindle assembly, and the first spoke portion and the second spoke portion are both located at the first end of the spindle assembly; the joint head is located at the second end of the spindle assembly, and the joint head is fixedly connected to the motor stator; the brake is located on the inner side of the joint head facing the first end of the spindle assembly. The hub motor has a simple structure, a compact structure, and occupies a small space. The motor rotor and the motor stator are coaxially sleeved on the first end of the spindle assembly through the first spoke portion and the second spoke portion, respectively, and the brake is arranged on the inner side of the joint head located at the second end of the spindle assembly, so that when the joint head is removed, the brake can be exposed, and the brake can be repaired and replaced without separating the motor stator and the motor rotor. The operation is simple, which is conducive to reducing the repair difficulty and repair cost of the brake in the hub motor.

[0004] However, this structure also has some problems. This structure does not make full use of the wheel side space. The connection between the wheel hub motor and the wheel is through the wheel hub flange interface. Since the motor rotor housing protrudes outward from the vehicle, the entire vehicle will move outward when the wheel is installed. The wheel side space is not compact enough, resulting in limited layout space for the vehicle chassis suspension and extremely difficult chassis suspension layout. It is necessary to further improve the utilization of the wheel side space. Summary of the invention

[0005] The purpose of this application is to solve the deficiencies of the above-mentioned background technology and to provide a rear suspension hub motor wheel rim integrated structure, an assembly method and a vehicle.

[0006] The technical solution of the present application is: a rear suspension hub motor wheel edge integrated structure, comprising:

[0007] A rim, wherein the rim is a hollow annular structure;

[0008] The wheel hub motor is located inside the wheel rim and includes an outer rotor housing fixed to an end of the wheel rim away from the vehicle body and a stator housing arranged on the outer rotor housing; an end of the stator housing close to the vehicle body is located axially inside the wheel rim;

[0009] A rear suspension, the rear suspension comprising a joint head fixedly connected to an end of the stator housing close to the vehicle body;

[0010] The brake comprises a brake caliper fixedly connected to the joint head and a brake disc connected to an end of an outer rotor housing close to the vehicle body.

[0011] According to a rear suspension hub motor wheel rim integrated structure provided in the present application, a spoke is provided at one end of the rim away from the vehicle body; screw holes fixedly connected to the outer rotor housing are reserved on the spoke.

[0012] According to a rear suspension hub motor wheel edge integrated structure provided in the present application, a plurality of first mounting holes are provided at one end of the stator housing close to the vehicle body; and a plurality of second mounting holes corresponding to the first mounting holes are opened on the joint head.

[0013] According to a rear suspension hub motor wheel edge integrated structure provided in the present application, two groups of first mounting holes are provided at one end of the stator shell close to the vehicle body, and the two groups of first mounting holes are symmetrically arranged with the axis of the stator shell as the center, and each group includes at least two first mounting holes arranged at intervals in the vertical or horizontal direction.

[0014] According to a rear suspension hub motor wheel edge integrated structure provided by the present application, the middle part of the stator housing close to the axis at one end close to the vehicle body is recessed axially toward the side away from the vehicle body, and the edge part away from the axis is bent axially toward the side close to the vehicle body.

[0015] According to a rear suspension hub motor wheel edge integrated structure provided in the present application, the brake disc is an annular structure, and a first connecting structure is arranged on the circumferential outer side of the brake disc; the first connecting structure corresponds to the second connecting structure at one end of the outer rotor housing close to the vehicle body, and the brake disc is fixedly connected to the outer rotor housing by docking the first connecting structure with the second connecting structure.

[0016] According to a rear suspension hub motor wheel rim integrated structure provided in the present application, the first connection structure includes a plurality of bosses arranged at equal intervals along the circumferential direction and arranged on the outer side of the circumference of the brake disc; the second connection structure includes an annular flange arranged on the inner side of the circumference of the outer rotor housing close to one end of the vehicle body; the boss is fixedly connected to the flange by bolts passing through the boss and the flange in the axial direction.

[0017] According to a rear suspension hub motor wheel edge integrated structure provided by the present application, the rear suspension includes:

[0018] A shock absorber, wherein the lower end of the shock absorber is fixedly connected to a clamping fixing hole on a portion of the joint head extending axially outward from the rim, and the upper end of the shock absorber is fixedly connected to the vehicle body through an upper support seat;

[0019] A bracket, the bracket is fixedly connected to the vehicle body, an upper rear control arm, an upper front control arm, a toe rod, a lower front control arm and a spring arm are arranged between the bracket and the joint head; two ends of the upper rear control arm, the upper front control arm, the toe rod, the lower front control arm and the spring arm are respectively hingedly connected to the joint head and the bracket;

[0020] A lifting eye, one end of which is hingedly connected to the upper rear control arm;

[0021] A stabilizing rod, one end of which is connected to the other end of the lifting ear, and the stabilizing rod is provided with a plurality of connection points fixed to the bracket.

[0022] A spring is arranged between the spring arm and the longitudinal beam of the vehicle body.

[0023] The present application also provides a method for assembling a rear suspension hub motor wheel edge integrated structure, the method being used to assemble the above-mentioned rear suspension hub motor wheel edge integrated structure, comprising:

[0024] Install a brake on the end of the wheel hub motor close to the vehicle body;

[0025] The rear suspension is installed at one end of the stator housing of the hub motor close to the vehicle body;

[0026] Insert the outer rotor housing of the hub motor into the rim along the axial direction, and fix the outer rotor housing to the rim.

[0027] According to a method for assembling a rear suspension hub motor wheel-edge integrated structure provided in the present application, the method for fixing the outer rotor housing to the rim includes: inserting the end of the outer rotor housing away from the vehicle body into the rim axially from the end of the rim close to the vehicle body, so that the end of the outer rotor housing away from the vehicle body is tightly fitted with the spokes of the end of the rim away from the vehicle body, and bolts are driven into the spokes and the outer rotor housing to fix the two together.

[0028] According to a method for assembling a wheel-edge integrated structure of a rear suspension hub motor provided in the present application, the method for installing a brake at one end of the hub motor close to the vehicle body includes: fixing an annular brake disc in the brake to one end of an outer rotor housing close to the vehicle body, aligning screw holes on a plurality of bosses equidistantly arranged along the circumferential direction on the outer side of the brake disc with screw holes on a flange of the outer rotor housing close to the vehicle body, driving bolts into the aligned screw holes to fix the brake disc to the outer rotor housing; and fixing the brake caliper in the brake disc to the joint head to complete the assembly of the brake.

[0029] The present application also provides a car, which is equipped with the above-mentioned rear suspension hub motor wheel side integrated structure.

[0030] The advantages of the present application are as follows: 1. The present application integrates the wheel hub motor into the wheel rim, and a section of the outer rotor housing of the wheel hub motor away from the vehicle body is fixedly connected to the wheel rim, and the connection point thereof will not occupy the internal space of the wheel rim, and the internal space utilization rate of the wheel rim is extremely high. Moreover, the wheel hub motor of the present application is located as a whole inside the wheel rim, and the wheel hub motor will not occupy the wheel side space, and sufficient space is reserved for the arrangement of the rear suspension and pipelines, which solves the problem of limited wheel side space in the prior art. The entire wheel side integrated structure has abundant interfaces, which facilitates the rapid installation of pipelines and rear suspension, and solves the difficulties in wheel side integration caused by the installation of the wheel hub motor on mature passenger cars, the complex interface between the rear suspension system of the wheel hub motor and the vehicle body, and the problem of insufficient performance of the rear suspension of the wheel hub motor.

[0031] 2. The rim structure of the present application is simple. By reserving screw holes on the spokes, it is convenient to fix the outer rotor housing in the hub motor. The overall assembly operation is very simple. When assembling the hub motor and the rim, it is only necessary to insert the outer rotor housing of the hub motor into the rim and drive in bolts to fix the outer rotor housing on the rim.

[0032] 3. The present application designs the mounting structure of the stator housing and the joint head. By providing a first mounting hole at one end of the stator housing close to the vehicle body to form a docking interface, and designing a corresponding second mounting hole on the joint head, the joint head and the stator housing can be fixedly connected by docking the first mounting hole and the second mounting hole. The overall connection method is very simple.

[0033] 4. The present application optimizes the arrangement of the first mounting holes. By designing the first mounting holes into multiple groups, on the one hand, the tightness of the connection between the stator housing and the joint head can be improved, and on the other hand, the anti-torsion effect in the direction around the axis is better;

[0034] 5. The stator housing of the present application has a structure that the middle part of the stator housing close to the vehicle body is concave toward the side away from the vehicle body, and the edge is bent toward the side of the vehicle body. The inward concave middle part can facilitate the installation and arrangement of the joint head, so that the joint head and other structures have sufficient installation space. The edge position extends toward the vehicle body to form more space between the outer rotor housing and the stator housing, which is convenient for arranging other components of the hub motor.

[0035] 6. The fixing method of the brake disc and the outer rotor housing in the present application is very simple. The brake disc adopts an annular structure, which will not occupy the installation space of the rear suspension and the wheel hub motor. The rear suspension can be conveniently docked with the stator housing. In addition, the annular brake disc is easy to install and can effectively ensure the contact area with the brake friction pad. The volume of the brake disc is greatly reduced, which effectively reduces the weight of the entire wheel side integrated structure;

[0036] 7. The present application designs a special boss and flange structure for the installation of the outer rotor housing and the brake disc. The outer rotor housing and the brake disc can be conveniently fixed together by the one-to-one correspondence between the flange and the screw holes on the boss. The outer circumference of the brake disc is connected to the inner circumference of the outer rotor housing close to one end of the vehicle body. The connection is tight and stable, and will not occupy too much space inside the rim, which is convenient for the subsequent arrangement of the rear suspension and pipeline structure.

[0037] 8. The rear suspension structure of the present application is simple, easy to install and assemble, and can make full use of the wheel side space, and can maintain a good match with traditional vehicles. The bracket of the rear suspension structure is not affected in any way and can be directly connected to the vehicle body. The KC characteristics of the rear suspension meet the performance indicators of passenger cars, and can provide a good solution for the future vehicle installation and mass production application of wheel hub motors;

[0038] 9. The present application also provides an assembly method, which is used to assemble a wheel-rim integrated structure. The required wheel-rim integrated structure can be quickly formed according to the structure of the rim, the hub motor and the rear suspension. The assembly is orderly, the wheel-rim space is sufficient, and the difficulty of rear suspension assembly is greatly reduced;

[0039] 10. The method of assembling the hub motor and the rim in the present application is very simple. The outer rotor housing of the hub motor is inserted into the rim along the axial direction, and the two are easy to assemble. Bolts are driven from the outer side of the rim spoke into the spoke and the outer rotor housing to fix the two together, which is convenient for operation.

[0040] 11. The present application makes it very easy to assemble the brake. The brake disc of the brake is an annular structure. The brake disc can be conveniently connected to the outer rotor housing directly through the corresponding structure of the flange and the boss. The brake caliper of the brake is fixed to the joint head, and the interface design is rich, which greatly facilitates the assembly.

[0041] The rear suspension hub motor wheel-rim integrated structure of the present application completely integrates the hub motor inside the rim, reserving sufficient assembly space for the wheel rim, facilitating the layout of the rear suspension and pipelines, and at the same time reserving multiple interfaces, greatly facilitating the assembly of the rear suspension and pipelines, solving the problems of difficult integration of existing hub motors, complex interfaces and insufficient performance, and having great promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 : Axial view of the rear suspension hub motor wheel side integrated structure of the present application;

[0043] Figure 2 : Axial view of the rear suspension hub motor wheel side integrated structure of the present application (another viewing direction);

[0044] Figure 3 : Schematic diagram of the explosion of the rear suspension hub motor wheel side integrated structure of the present application;

[0045] Figure 4 : Schematic diagram of the hub motor structure of the present application;

[0046] Figure 5 : Schematic diagram of the hub motor structure and brake assembly of the present application;

[0047] Figure 6 : Schematic diagram of the exploded assembly of the hub motor structure and brake of the present application;

[0048] Figure 7 : Schematic diagram of the hub motor structure, brake and joint head assembly of the present application;

[0049] Figure 8 : Schematic diagram of the assembly explosion of the hub motor structure, brake and joint head of the present application;

[0050] Fig. 9 : Schematic diagram of the assembly of the wheel hub motor structure, brake, joint head, spring arm, upper rear control arm, upper front control arm, toe rod and lower front control arm of the present application;

[0051] Fig.10 : Assembly diagram of the wheel hub motor structure, brake, joint head, spring arm, upper rear control arm, upper front control arm, toe rod and lower front control arm of the present application (from another viewing direction);

[0052] Fig.11 : Schematic diagram of the joint head structure of this application;

[0053] Fig.12 : Schematic diagram of rim structure;

[0054] Among them: 1 - rim; 11 - spokes;

[0055] 2—outer rotor housing; 21—flange;

[0056] 3—stator housing; 31—first mounting hole;

[0057] 4—rear suspension; 41—joint head; 411—second mounting hole;

[0058] 42—shock absorber; 43—bracket; 44—upper rear control arm; 45—upper front control arm; 46—front toe rod; 47—lower front control arm; 48—spring arm; 481—spring; 49—hanging ear; 410—stabilizer bar;

[0059] 5—brake; 51—brake disc; 511—boss; 52—brake caliper. DETAILED DESCRIPTION

[0060] The embodiments of the present application are described in detail below, 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 intended to be used to explain the present application, and should not be construed as limiting the present application.

[0061] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, 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 application.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0063] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0064] The present application relates to a wheel-rim integrated structure of a rear suspension hub motor, in which the hub motor is integrated into the rim. The hub motor is completely inside the rim and does not occupy space on one side of the vehicle body. When the wheel remains unchanged, sufficient space is reserved for the layout of the rear suspension and pipelines, thereby solving the problem of limited wheel-rim space in the prior art. The integrated structure of the present application integrates many interfaces on the hub motor, rim and suspension, and the entire integrated structure is very convenient to assemble, thereby solving the difficulties in wheel-rim integration caused by installing hub motors on mature passenger cars, solving the problem of complex interface between the rear suspension system of the hub motor and the vehicle body, and solving the problem of insufficient performance of the rear suspension of the hub motor.

[0065] Specifically, Figures 1 to 12As shown, a rear suspension hub motor wheel edge integrated structure of the present application includes a rim 1, a hub motor, a rear suspension 4 (not shown in the figure) and a brake 5 (not shown in the figure), the rim 1 is a hollow annular structure; the hub motor is located inside the rim 1, including an outer rotor housing 2 fixed to an end of the rim 1 away from the vehicle body and a stator housing 3 arranged on the outer rotor housing 2, and the end of the stator housing 3 close to the vehicle body is located axially inside the rim 1; the hub motor also has many other structures, because these structural components are not involved in this No description is given; the outer rotor housing 2 and the stator housing 3 together form the outer shell of the hub motor, the outer rotor housing 2 is fixedly connected to the rim 1, and is a structure that rotates together with the rim 1, the stator housing 3 is fixedly connected to the rear suspension 4, and is fixedly connected to the subframe, and is a structure that does not rotate; the hub motor of the present application is completely located inside the rim 1, and both ends of the hub motor do not extend beyond the axial sides of the rim 1, thereby reserving sufficient space for the subsequent installation of the rear suspension 4 and the corresponding pipelines, facilitating the layout of the rear suspension 4 and the pipelines.

[0066] The rear suspension 4 includes a joint head 41 fixedly connected to one end of the stator housing 3 close to the vehicle body. An interface connected to the joint head 41 is reserved at the end of the stator housing 3 close to the vehicle body. The joint head 41 can be conveniently fixed to the stator housing 3 through the interface. The joint head is provided with a structure extending toward the vehicle body, which is convenient for connection with other structural components on the rear suspension 4, that is, part of the structure of the joint head 41 is inside the rim 1, and part of the structure is outside the rim 1. The part outside the rim 1 will be connected to other structures of the rear suspension 4.

[0067] The brake 5 includes a brake caliper 52 fixedly connected to the joint head 41 and a brake disc 51 connected to the end of the outer rotor housing 2 close to the vehicle body. The brake 5 is a brake device installed between the wheel hub motor and the rear suspension 4. The brake disc 51 of the brake 5 is fixedly connected to the outer rotor housing 2. The brake disc 51 rotates around the axis with the entire outer rotor housing 2. The brake caliper 52 is fixedly connected to the joint head 41. When braking is required, the friction plate in the brake caliper 52 is attached to the brake disc 51, and the outer rotor housing 2 is braked and decelerated by friction force.

[0068] During actual assembly, the following method can be used: install the brake 5 at the end of the hub motor close to the vehicle body; install the rear suspension 4 at the end of the stator housing 3 of the hub motor close to the vehicle body; insert the outer rotor housing 2 of the hub motor axially into the rim 1, and fix the outer rotor housing 2 to the rim 1.

[0069] The assembly of the present application is carried out in a specific order. First, the hub motor is connected to the side close to the vehicle body, including the connection with the brake 5 and the rear suspension 4, and the assembly is performed from the outside to the inside; then the hub motor is assembled with the rim 1.

[0070] In some embodiments of the present application, the connection structure between the rim 1 and the outer rotor housing 2 is optimized. Specifically, Fig.12 As shown, the rim 1 of this embodiment is provided with spokes at one end away from the vehicle body, and the multiple spokes are distributed in a divergent shape with the axis of the rim 1 as the center, and the multiple spokes are connected as a whole at the axis position of the rim 1, and screw holes fixedly connected to the outer rotor housing 2 are reserved on the spokes, and the multiple screw holes are arranged at equal intervals along the circumferential direction with the axis of the rim 1 as the center.

[0071] The outer rotor housing 2 is provided with a plurality of screw holes corresponding to the wheel spokes at one end away from the vehicle body. The outer rotor housing 2 and the wheel spokes can be fixedly connected as a whole by driving bolts into the screw holes on the outer rotor housing 2 and the wheel spokes, thereby completing the connection between the outer rotor housing 2 and the wheel rim 1 of the hub motor.

[0072] During specific assembly, the end of the outer rotor housing 2 away from the vehicle body is inserted into the rim 1 axially from the end of the rim 1 close to the vehicle body, so that the end of the outer rotor housing 2 away from the vehicle body is tightly fitted with the spokes of the end of the rim 1 away from the vehicle body, and bolts are driven into the spokes and the outer rotor housing 2 to fix the two together.

[0073] In other embodiments of the present application, the structure of the stator housing 3 is optimized. Specifically, Figures 1 to 9 As shown, the stator housing 3 of this embodiment is fixedly connected to the joint head 41, and a plurality of first mounting holes 31 are provided at one end of the stator housing 3 close to the vehicle body, and a plurality of second mounting holes 411 corresponding to the first mounting holes 31 are provided on the joint head 41. Two groups of first mounting holes 31 are provided at one end of the stator housing 3 close to the vehicle body, and the two groups of first mounting holes 31 are symmetrically arranged with the axis of the stator housing 3 as the center, and each group includes at least two first mounting holes 31 arranged at intervals in the vertical or horizontal direction. Similarly, the second mounting holes 411 on the joint head 41 are also arranged in the same way, and two groups of second mounting holes 411 are provided on the main body of the joint head 41, and the two groups of second mounting holes 411 are symmetrically arranged with the center of the main part of the joint head 41 as the center, and each group includes at least two second mounting holes 411 arranged at intervals in the vertical or horizontal direction.

[0074] The stator housing 3 is a concave structure near one end of the vehicle body. The middle part of the stator housing 3 near one end of the vehicle body near the axis is concave axially toward the side away from the vehicle body. The circumferential edge part of the stator housing 3 near one end of the vehicle body is bent and extended axially toward the side close to the vehicle body to form a step end surface structure. The first mounting hole 31 is arranged in the middle position of the stator housing 3 near one end of the vehicle body for fixed connection with the joint head 41. Since the middle part is concave toward the side away from the vehicle body, the suspension structure such as the joint head 41 can enter a deeper part of the rim 1, and the joint head 41 is closer to the wheel center position, and the wheel center is closer to the kingpin of the rear suspension, so that the controllability of the whole vehicle is greatly enhanced. The circumferential edge position of the stator housing 3 near one end of the vehicle body is closer to one side of the vehicle body, so that a larger space can be formed between the stator housing 3 and the outer rotor housing 2, which is convenient for the arrangement of other structural components of the hub motor.

[0075] During actual assembly, the main body of the joint head 41 is fitted to the middle part of the stator housing 3 close to the vehicle body end, and the second mounting hole 411 on the joint head 41 is adjusted to be aligned one by one with the first mounting hole 31 on the stator housing 3 close to the vehicle body end in the axial direction. Then, bolts are driven into the aligned first mounting hole 31 and second mounting hole 411 to complete the fixed connection between the stator housing 3 and the joint head 41.

[0076] In other embodiments of the present application, the structure of the brake disc 51 is optimized. Specifically, Figures 5 to 10 As shown, the brake disc 51 of this embodiment is an annular structure, and a first connecting structure is provided on the circumferential outer side of the brake disc 51, and the first connecting structure corresponds to the second connecting structure at one end of the outer rotor housing 2 close to the vehicle body. The brake disc 51 is fixedly connected to the outer rotor housing 2 by docking the first connecting structure with the second connecting structure.

[0077] The brake disc 51 is an annular structure connected to the outer edge of the circumference of one end of the outer rotor housing 2 close to the vehicle body. The annular structure of the brake disc 51 can free up the axial position of the stator housing 3, without affecting the installation of the rear suspension 4 structure such as the joint head 41. At the same time, the annular structure of the brake disc 51 has a large friction area and an excellent braking effect. The overall structure of the brake disc 51 is greatly reduced compared to the traditional full-circle brake disc. The space occupied and the weight of the brake disc 51 are reduced, the weight of the entire wheel is reduced, the unsprung weight is reduced, and the handling performance is enhanced. The brake disc 51 of this embodiment can be made of carbon ceramic material to ensure that the brake disc 51 has good thermal decay resistance.

[0078] Specifically, Figures 5 to 9As shown, the first connection structure includes a plurality of bosses 511 arranged at equal intervals in the circumferential direction and disposed on the outer side of the circumference of the brake disc 51, and the second connection structure includes an annular flange 21 arranged on the inner side of the circumference of the outer rotor housing 2 close to one end of the vehicle body, and the boss 511 is fixedly connected to the flange 21 by bolts penetrating the boss 511 and the flange 21 in the axial direction.

[0079] The brake disc 51 is assembled to the outer circumferential side of the outer rotor housing 2 close to one end of the vehicle body through the boss 511 structure. This assembly structure is simple, and the brake disc 51 is tightly and stably connected to the outer rotor housing 2.

[0080] During actual assembly, the annular brake disc 51 in the brake 5 is fixed to the end of the outer rotor housing 2 close to the vehicle body, so that the screw holes on the boss 511 on the outer side of the circumference of the brake disc 51 are aligned with the screw holes on the flange 21 of the outer rotor housing 2 close to the vehicle body end, and bolts are driven into the aligned screw holes to fix the brake disc 51 to the outer rotor housing 2, thereby completing the installation of the brake disc 51.

[0081] After the brake disc 51 is installed, the brake caliper 52 in the brake 5 is installed. Since the brake disc 51 is a moving structure that rotates with the outer rotor housing 2, and the brake caliper 52 is a non-rotating structure, the brake caliper 52 of this embodiment is fixedly connected to the joint head 41. Figure 5 , 6 As shown in FIG. 8 , the brake caliper 52 is designed with two connection points (such as Figures 5 to 8 A and B shown in the figure), the joint head 41 is provided with two corresponding connection points (such as Fig.11 As shown in a and b), during actual assembly, align the two connection points on the brake caliper 52 with the two connection points on the joint head 41, and drive in the bolts to complete the assembly of the brake caliper 52 and the joint head 41. At this point, the assembly of the brake 5 is completed.

[0082] In a preferred embodiment of the present application, the above-mentioned rear suspension 4 structure is optimized in this embodiment. The rear suspension 4 structure of this embodiment is adaptively adjusted according to the wheel hub motor. In order to adapt to the vehicle body end, the bracket 43 structure connected to the vehicle body end in the rear suspension 4 is not changed. Only some structural components connected to the wheel hub motor in the rear suspension 4 are adjusted in a targeted manner. This can adapt to a variety of vehicle structure and the subsequent development cost is lower.

[0083] Specifically, Figures 1 to 3 As shown in FIGS. 9 , 10 and 11 , the rear suspension 4 of this embodiment includes a shock absorber 42, a bracket 43, an upper rear control arm 44, an upper front control arm 45, a toe rod 46, a lower front control arm 47, a spring arm 48, a hanging ear 49 and a stabilizer bar 410. The joint head 41 provides a mounting fulcrum for the shock absorber 42. Figure 3As shown, the joint head 41 is provided with a connection point c corresponding to the lower end of the shock absorber 42, and the lower end of the shock absorber 42 is provided with a connection point C. The shock absorber 42 is connected to the joint head 41 through the connection point C and the connection point C. The connection between the connection point C and the connection point C is connected through a bushing structure, and the upper end of the shock absorber 42 is fixedly connected to the vehicle body through an upper support seat; Figure 3As shown, the joint head 41 is a main structure connected to the stator housing 3, and the body of the joint head 41 is arranged with connection points c, connection points d, connection points e, connection points a, connection points b, connection points g and connection points h in sequence along the circumferential direction, and the joint head is connected and assembled through connection points a, connection points b and connection points A and connection points B of the brake disc 51; the bracket 43 is a frame structure connected to the vehicle body, and seven connection points are arranged on the bracket 43, namely connection point i, connection point j, connection point k, connection point l, connection point m, connection point n and connection point o, and an upper rear control arm 44, an upper front control arm 45, a toe rod 46, a lower front control arm 47 and a spring arm 48 are arranged between the bracket 43 and the joint head 41.Among them, the upper rear control arm 44 is at the uppermost layer, and the two ends of the upper rear control arm 44 have a connection point D and a connection point I respectively. The connection point D of the upper rear control arm 44 is connected to the connection point d of the joint head 41 through a bushing structure, and the connection point I of the upper rear control arm 44 is connected to the connection point i of the bracket 43 through a bushing structure; the upper front control arm 45 is at the lower layer of the upper rear control arm 44, adjacent to the upper rear control arm 44, and the two are also staggered in the X direction. The upper front control arm 45 is in front of the upper rear control arm 44 along the X direction, that is, closer to the front side of the vehicle. The two ends of the upper front control arm 45 are provided with a connection point E and a connection point J. The connection point E of the upper front control arm 45 is connected to the connection point e of the joint head 41 through a bushing structure. The connection point J is connected to the connection point j of the bracket 43 through a bushing structure; the two ends of the toe rod 46 are provided with a connection point F and a connection point K, the connection point F of the toe rod 46 is connected to the connection point f of the joint head 41 through a bushing structure, and the connection point K of the toe rod 46 is connected to the connection point k of the bracket 43 through a bushing structure; the two ends of the lower front control arm 47 are provided with a connection point G and a connection point L, the connection point G of the lower front control arm 47 is connected to the connection point g of the joint head 41 through a bushing structure, and the connection point L of the lower front control arm 47 is connected to the connection point l of the bracket 43 through a bushing structure; a spring 481 is provided between the spring arm 48 and the longitudinal beam of the vehicle body, the lower pad of the spring 481 is fixed on the spring arm 48, and the upper end of the spring 481 is fixedly connected to the longitudinal beam of the vehicle body There are connection points H and M at both ends of the spring arm 48. The connection point H of the spring arm 48 is connected to the connection point h of the joint head 41 through a bushing structure, and the connection point M of the spring arm 48 is connected to the connection point m of the bracket 43 through a bushing structure; the connection points corresponding to the upper rear control arm 44, the upper front control arm 45, the toe rod 46, the lower front control arm 47 and the spring arm 48 on the bracket 43 are arranged in sequence, and through the connection points i, j, k, l and m on the bracket 43, the upper rear control arm 44, the upper front control arm 45, the toe rod 46, the lower front control arm 47 and the spring arm 48 are arranged alternately between the bracket 43 and the joint head 41, each of which plays its own function and does not interfere with each other; the lifting ear 49 is connected to the upper rear The structure of the control arm 44 and the stabilizer bar 410, the two ends of the ear 49 are provided with a connection point p and a connection point q, wherein the connection point p at one end of the ear 49 is connected to the connection P on the upper rear control arm 44, and the connection between the connection point p and the connection point P is connected through a ball pin structure; the stabilizer bar 410 is a U-shaped rod structure, the stabilizer bar 410 is connected to two ears 49 in the rear suspension of the rear wheels on both sides, the end of the stabilizer bar 410 is provided with a connection point Q, the connection point Q is connected to the connection point q at the end of the ear 49 through a ball pin structure, and two connection points N and O are provided on the main body of the stabilizer bar 410, and the connection point N and the connection point O are respectively fixedly connected to the connection point n and the connection point o on the bracket 43; the specific connection point distribution is shown in. Figure 3 shown.

[0084] While the suspension structure realizes the wheel hub drive technology, the suspension design can also maintain the functions of load bearing, guiding, mitigating impact and attenuating vibration.

[0085] When the rear suspension is assembled, the joint head 41 is installed on the stator housing 3 through the first mounting hole and the second mounting hole; the lower end of the shock absorber 42 is connected to the connection point c of the joint head 41 through the connection point C; the connection point D at one end of the upper rear control arm 44 is connected to the connection point d of the joint head 41 through the bushing structure, and the connection point I at the other end of the upper rear control arm 44 is connected to the connection point i of the bracket 43 through the bushing structure; the connection point E at one end of the upper front control arm 45 is connected to the connection point e of the joint head 41 through the bushing structure, and the connection point J at the other end of the upper front control arm 45 is connected to the connection point j of the bracket 43 through the bushing structure; the connection point F at one end of the toe rod 46 is connected to the connection point f of the joint head 41 through the bushing structure, and the connection point K at the other end of the toe rod 46 is connected to the connection point k of the bracket 43 through the bushing structure; A connection point G at one end of the control arm 47 is connected to a connection point g of the joint head 41 through a bushing structure, and a connection point L at the other end of the lower front control arm 47 is connected to a connection point l of the bracket 43 through a bushing structure; a connection point H at one end of the spring arm 48 is connected to a connection point h of the joint head 41 through a bushing structure, and a connection point M at the other end of the spring arm 48 is connected to a connection point m of the bracket 43 through a bushing structure, and a spring 481 is installed between the spring arm 48 and the vehicle body longitudinal beam; a connection point p at one end of the lifting ear 49 is connected to a connection P on the upper rear control arm 44, and a connection point q at the other end of the lifting ear 49 is connected to a connection point Q of the stabilizer bar 410 through a ball pin structure; the stabilizer bar 410 is fixedly connected to a connection point n and a connection point o on the bracket 43 through a connection point N and a connection point O respectively, and is assembled to the bracket 43; the rear suspension assembly is completed.

[0086] Specifically, the assembly method of the rear suspension hub motor wheel edge integrated structure of the present application is as follows: fit the main body of the joint head 41 to the middle part of the stator housing 3 close to the vehicle body end, adjust the second mounting hole 411 on the joint head 41 so that it is aligned one by one with the first mounting hole 31 on the stator housing 3 close to the vehicle body end in the axial direction, and then drive bolts into the aligned first mounting hole 31 and second mounting hole 411 to complete the fixed connection between the stator housing 3 and the joint head 41; fix the annular brake disc 51 in the brake 5 to the outer rotor shell The outer rotor housing 2 is close to one end of the vehicle body, so that the screw holes on the multiple bosses 511 arranged at equal intervals along the circumferential direction on the outer side of the circumference of the brake disc 51 are aligned with the screw holes on the flange 21 of the outer rotor housing 2 close to one end of the vehicle body, and bolts are driven into the aligned screw holes to fix the brake disc 51 to the outer rotor housing 2, and the installation of the brake disc 51 is completed; the two connection points on the brake caliper 52 are aligned with the two connection points on the joint head 41, and the bolts are driven in to complete the assembly of the brake caliper 52 and the joint head 41, and the assembly of the brake 5 is completed.

[0087] The lower end of the shock absorber 42 is connected to the connection point c of the joint head 41 through the connection point C; the connection point D at one end of the upper rear control arm 44 is connected to the connection point d of the joint head 41 through a bushing structure, and the connection point I at the other end of the upper rear control arm 44 is connected to the connection point i of the bracket 43 through a bushing structure; the connection point E at one end of the upper front control arm 45 is connected to the connection point e of the joint head 41 through a bushing structure, and the connection point J at the other end of the upper front control arm 45 is connected to the connection point j of the bracket 43 through a bushing structure; the connection point F at one end of the toe rod 46 is connected to the connection point f of the joint head 41 through a bushing structure, and the connection point K at the other end of the toe rod 46 is connected to the connection point k of the bracket 43 through a bushing structure; the connection point G at one end of the lower front control arm 47 is connected to the joint head 41 through a bushing structure. The connection point g of the joint 41 is connected, and the connection point L of the other end of the lower front control arm 47 is connected to the connection point l of the bracket 43 through a bushing structure; the connection point H of one end of the spring arm 48 is connected to the connection point h of the joint 41 through a bushing structure, and the connection point M of the other end of the spring arm 48 is connected to the connection point m of the bracket 43 through a bushing structure, and a spring 481 is installed between the spring arm 48 and the vehicle body longitudinal beam; the connection point p of one end of the ear 49 is connected to the connection P on the upper rear control arm 44, and the connection point q of the other end of the ear 49 is connected to the connection point Q of the stabilizer bar 410 through a ball pin structure; the stabilizer bar 410 is fixedly connected and assembled to the bracket 43 through the connection point N and the connection point O respectively; the assembly of the suspension is completed;

[0088] Insert the end of the outer rotor housing 2 away from the vehicle body into the rim 1 along the axial direction from the end of the rim 1 close to the vehicle body, so that the end of the outer rotor housing 2 away from the vehicle body is closely fitted with the spoke of the end of the rim 1 away from the vehicle body, and drive bolts into the spoke and the outer rotor housing 2 to fix the two together;

[0089] At this point, the assembly of the rear suspension hub motor wheel side integrated structure is completed.

[0090] The X direction of the present application refers to the front and rear direction of the automobile, the Y direction of the present application refers to the left and right direction of the automobile, and the Z direction of the present application refers to the up and down direction of the automobile.

[0091] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application to be protected. The scope of protection claimed in the present application is defined by the attached claims and their equivalents.

Claims

1. A rear suspension wheel hub motor wheel edge integrated structure, characterized in that: include, A rim (1), wherein the rim (1) is a hollow annular structure; A wheel hub motor, the wheel hub motor being located inside a wheel rim (1), comprising an outer rotor housing (2) fixed to an end of the wheel rim (1) away from a vehicle body, and a stator housing (3) arranged on the outer rotor housing (2); an end of the stator housing (3) close to the vehicle body being located axially inside the wheel rim (1); A rear suspension (4), the rear suspension (4) comprising a joint head (41) fixedly connected to an end of the stator housing (3) close to the vehicle body; A brake (5) comprising a brake caliper (52) fixedly connected to a joint head (41) and a brake disc (51) connected to an end of an outer rotor housing (2) close to a vehicle body.

2. A rear suspension hub motor wheel edge integrated structure as claimed in claim 1, characterized in that: A wheel spoke is arranged at one end of the wheel rim (1) away from the vehicle body; screw holes for fixed connection with the outer rotor housing (2) are reserved on the wheel spoke.

3. A rear suspension hub motor wheel edge integrated structure as claimed in claim 1, characterized in that: The stator housing (3) is provided with a plurality of first mounting holes at one end close to the vehicle body; and the joint head (41) is provided with a plurality of second mounting holes corresponding to the first mounting holes.

4. A rear suspension hub motor wheel edge integrated structure as claimed in claim 3, characterized in that: The stator housing (3) is provided with two groups of first mounting holes at one end close to the vehicle body. The two groups of first mounting holes are symmetrically arranged with the axis of the stator housing (3) as the center, and each group includes at least two first mounting holes arranged at intervals in the vertical or horizontal direction.

5. The rear suspension hub motor wheel edge integrated structure according to claim 1, characterized in that: The middle part of the stator housing (3) close to the axis at one end close to the vehicle body is recessed axially toward the side away from the vehicle body, and the edge part away from the axis is bent axially toward the side close to the vehicle body.

6. A rear suspension hub motor wheel edge integrated structure as claimed in claim 1, characterized in that: The brake disc (51) is an annular structure, and a first connection structure is provided on the outer circumferential side of the brake disc (51); the first connection structure corresponds to a second connection structure at one end of the outer rotor housing (2) close to the vehicle body, and the brake disc (51) is fixedly connected to the outer rotor housing (2) by docking the first connection structure with the second connection structure.

7. A rear suspension hub motor wheel edge integrated structure as claimed in claim 6, characterized in that: The first connection structure comprises a plurality of bosses (511) arranged at equal intervals in the circumferential direction and disposed on the outer side of the circumference of the brake disc (51); the second connection structure comprises an annular flange (21) arranged on the inner side of the circumference of one end of the outer rotor housing (2) close to the vehicle body; the boss (511) is integrally connected to the flange (21) by bolts which penetrate the boss (511) and the flange (21) in the axial direction.

8. The rear suspension hub motor wheel edge integrated structure according to claim 1, characterized in that: The rear suspension (4) comprises: A shock absorber (42), wherein the lower end of the shock absorber (42) is fixedly connected to a clamping and fixing hole on a portion of the joint head (41) extending axially outward from the outside of the rim (1), and the upper end of the shock absorber (42) is fixedly connected to the vehicle body via an upper support seat; A bracket (43), the bracket (43) is fixedly connected to the vehicle body, and an upper rear control arm (44), an upper front control arm (45), a toe pull rod (46), a lower front control arm (47) and a spring arm (48) are arranged between the bracket (43) and the joint head (41); two ends of the upper rear control arm (44), the upper front control arm (45), the toe pull rod (46), the lower front control arm (47) and the spring arm (48) are respectively hingedly connected to the joint head (41) and the bracket (43); A lifting lug (49), one end of which is hingedly connected to the upper rear control arm (44); A stabilizing rod (410), one end of which is connected to the other end of the lifting ear (49), and a plurality of connection points connected to the bracket (43) are provided on the stabilizing rod (410). A spring (481) is arranged between the spring arm (48) and the longitudinal beam of the vehicle body.

9. A method for assembling a rear suspension hub motor wheel edge integrated structure, characterized in that: The assembly method is used to assemble a rear suspension hub motor wheel edge integrated structure as claimed in any one of claims 1 to 8, comprising: A brake (5) is installed at one end of the wheel hub motor close to the vehicle body; A rear suspension (4) is installed on one end of the stator housing (3) of the hub motor close to the vehicle body; The outer rotor housing (2) of the wheel hub motor is inserted into the wheel rim (1) along the axial direction, and the outer rotor housing (2) and the wheel rim (1) are fixed.

10. A method for assembling a rear suspension hub motor wheel edge integrated structure as claimed in claim 9, characterized in that: The method for fixing the outer rotor housing (2) to the rim (1) comprises: inserting the end of the outer rotor housing (2) away from the vehicle body into the rim (1) along the axial direction from the end of the rim (1) close to the vehicle body, so that the end of the outer rotor housing (2) away from the vehicle body is tightly fitted with the spokes of the end of the rim (1) away from the vehicle body, and driving bolts into the spokes and the outer rotor housing (2) to fix the two together.

11. A rear suspension hub motor wheel edge integrated structure assembly method as claimed in claim 9, characterized in that: The method for installing a brake (5) at an end of a wheel hub motor close to a vehicle body comprises: fixing an annular brake disc (51) in the brake (5) to an end of an outer rotor housing (2) close to the vehicle body, aligning screw holes on a plurality of bosses (511) arranged equidistantly along the circumferential direction on the outer side of the circumference of the brake disc (51) with screw holes on a flange (21) at an end of the outer rotor housing (2) close to the vehicle body, driving bolts into the aligned screw holes to fix the brake disc (51) to the outer rotor housing (2); and fixing a brake caliper (52) in the brake disc (51) to a joint head (41) to complete the assembly of the brake (5).

12. A car, characterized in that: The automobile is equipped with a rear suspension hub motor wheel rim integrated structure as described in any one of claims 1 to 8.

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