A hub drive corner module integrated system

Abstract

The utility model discloses a kind of wheel hub drive angle module integrated systems, including wheel hub drive assembly, wheel rim, brake disc, brake caliper assembly and kingpin knuckle;One mounting ring is equipped in wheel rim, the brake disc includes friction ring and connecting ring, and the brake disc is fixedly connected with mounting ring by connecting ring;The brake caliper assembly is located in the inner side of brake disc along radial direction, and it includes caliper bracket and caliper housing, and two brake pads of opposite distribution are equipped on caliper housing;One side of the kingpin knuckle is equipped with caliper mounting bracket, and the caliper bracket is fixedly connected with caliper mounting bracket, and the two brake pads on caliper housing are distributed on the two sides of friction ring axial direction.The utility model improves brake effective radius, reduces the volume of caliper, realizes the miniaturization and light weight of caliper, saves space, and can effectively improve heat dissipation effect, to improve the stability of wheel operation air.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle drive and steering technology, and in particular to a hub drive angle module integrated system. Background Technology

[0002] The hub drive angle module integrates drive, steering, braking, and suspension height. By eliminating the traditional drive shaft, it reduces a large number of mechanical transmission components, optimizes the overall vehicle layout, and allows each wheel to rotate independently. Structurally, it allows for larger wheel steering angles, thus making the car more flexible in steering and movement.

[0003] Because the drive motor for the corneal block is integrated into the wheel hub, along with the brake and steering knuckle, the existing brake structure and assembly method result in a large overall size for the corneal module. Given the limited space in current wheel hubs, reducing the overall module size requires precise design in terms of brake installation location, dimensions, and method. This places high demands on component dimensions and arrangement, making component space layout design very difficult and impacting assembly efficiency. Furthermore, the traditional method of directly integrating the brake into the wheel hub limits heat dissipation, significantly affecting brake cooling, braking performance, wheel handling, and stability, potentially even impacting vehicle safety. Additionally, existing in-wheel brake discs are typically fixed to the drive shaft by a disc cap, but the large mass and volume of the disc cap hinder vehicle lightweighting and limit the effective braking radius of the brake disc.

[0004] Therefore, there is an urgent need to provide a hub drive angle module system that is highly integrated, compact in size, makes more efficient use of space, and offers better braking performance, as well as higher safety and stability. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the purpose of this utility model is to provide a wheel hub drive angle module integrated system, which installs the brake disc on the wheel rim, increases the effective braking radius, reduces the size of the caliper, realizes the miniaturization and weight reduction of the caliper, reduces the unsprung mass, saves space, and at the same time, can effectively improve the heat dissipation effect, thereby improving the wheel handling stability and improving vehicle safety.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a hub drive angle module integrated system, including a hub drive assembly, a wheel rim, a brake disc, a brake caliper assembly, and a kingpin steering knuckle; the hub drive assembly includes a hub motor, a reduction mechanism, and a drive shaft, wherein the hub motor is connected to the drive shaft via the reduction mechanism; one end of the drive shaft is fixedly connected to the wheel rim, and the other end is connected to the kingpin steering knuckle; characterized in that: a mounting ring is provided inside the wheel rim, the mounting ring being located on the wheel rim near the kingpin steering knuckle. The brake disc is fixedly connected to the side wall of the rim; the brake disc includes a friction ring and a connecting ring, wherein the connecting ring is disposed on the outside of the friction ring and integrally formed with the friction ring, and the brake disc is fixedly connected to the mounting ring through the connecting ring; the brake caliper assembly is disposed on the inner side of the brake disc along the radial direction, and includes a caliper bracket and a caliper housing, on which two brake blocks are disposed opposite each other; a caliper mounting bracket is provided on one side of the kingpin steering knuckle, and the caliper bracket is fixedly connected to the caliper mounting bracket, and the two brake blocks on the caliper housing are distributed on both sides of the friction ring along the axial direction.

[0007] Furthermore, a rim mounting flange is provided at the end of the drive shaft that is connected to the rim. The rim is fitted onto the drive shaft and is fixedly connected to the rim mounting flange by connecting bolts.

[0008] Furthermore, the connecting ring is located on the side close to the friction ring, inside the mounting ring, and is fixedly connected to the mounting ring by a heat-conducting bolt, through which the friction ring passes.

[0009] Furthermore, a number of heat dissipation holes are provided around the circumference of the friction ring.

[0010] Furthermore, the connecting ring is made of alloy steel, and the friction ring is made of high thermal conductivity silicon carbide. The connecting ring and the friction ring are formed into one piece by a casting process.

[0011] Furthermore, the reduction mechanism adopts a planetary reduction mechanism, which includes a sun gear, a planet carrier, planet gears, and a gear ring. The sun gear is sleeved on the drive shaft and has a clearance fit with the drive shaft. The planet carrier is connected to the drive shaft through a spline. The inner rotor of the hub motor is connected to the sun gear through a connecting frame. The inner rotor can drive the drive shaft to rotate after passing through the sun gear, planet gears, and gear ring.

[0012] Furthermore, the end of the drive shaft connected to the kingpin steering knuckle is provided with a swivel flange, and the kingpin steering knuckle is fixedly connected to the swivel flange by connecting bolts.

[0013] Furthermore, in the brake caliper, one brake block is fixedly connected to the caliper housing, and the other brake block is connected to the caliper housing through a brake, which can drive the brake block to move closer to or further away from the other brake block.

[0014] Furthermore, the brake is an electromechanical brake and is located on the side of the friction ring away from the drive motor; the brake includes an EMB motor and a ball screw, the motor shaft of the EMB motor is fixedly connected to the screw of the ball screw through a coupling, and the brake block connected to the brake is fixedly connected to the screw nut on the ball screw.

[0015] Furthermore, the top of the kingpin steering knuckle has a kingpin hole for mounting the kingpin steering motor, and the bottom has a ball joint hole for mounting the lower control arm of the vehicle.

[0016] Compared with the prior art, the present invention has the following advantages: 1. The brake disc is integrated with the wheel rim, which increases the effective braking radius, thereby reducing the size of the caliper. This achieves miniaturization and weight reduction of the caliper, saves space, reduces unsprung mass, and thus improves vehicle handling stability and vehicle safety.

[0017] 2. The friction disc is equipped with heat dissipation holes, which can quickly remove the heat generated by the brake disc during operation; at the same time, the connecting ring of the friction disc is connected to the mounting ring on the wheel rim through heat-conducting bolts, which can conduct the heat generated by the brake disc to the wheel rim, thereby increasing the heat dissipation area, further improving the heat dissipation effect, and ensuring braking stability.

[0018] 3. The use of electromechanical brakes results in a faster response speed, which helps to shorten braking time and improve vehicle safety performance.

[0019] 4. The hub motor and reduction mechanism are integrated together, which reduces the size of the drive mechanism and enables greater output torque and better power performance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 for Figure 1 Side view.

[0022] Figure 3 for Figure 2 A sectional view along line A-A.

[0023] Figure 4 This is a schematic diagram of the assembly structure of the brake disc and the wheel rim.

[0024] Figure 5 This is a schematic diagram of the assembly structure of the brake caliper and brake disc.

[0025] Figure 6 This is a schematic diagram of the brake disc structure.

[0026] In the diagram: 1—hub drive assembly, 2—rim, 31—friction ring, 32—connecting ring, 41—caliper bracket, 42—caliper housing, 43—brake block, 5—kingpin steering knuckle, 6—mounting ring, 7—heat-conducting bolt, 8—heat dissipation hole, 9—brake. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0029] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Example: See Figures 1-6 A hub drive module integrated system includes a hub drive assembly 1, a wheel rim 2, a brake disc, a brake caliper assembly, and a kingpin steering knuckle 5. The hub drive assembly 1 includes a hub motor, a reduction mechanism, and a drive shaft. The hub motor is connected to the drive shaft via the reduction mechanism, which is located on the side of the hub motor away from the spokes of the wheel rim 2. Specifically, the hub motor is an axial flux motor, including a stator housing and an inner rotor. The reduction mechanism is a planetary reduction mechanism, including a sun gear, a planet carrier, planet gears, and a ring gear. The sun gear is mounted on the drive shaft and has a clearance fit with it. The planet carrier is connected to the drive shaft via a spline. The inner rotor of the hub motor is connected to the sun gear via a connecting frame, and the inner rotor drives the drive shaft to rotate via the sun gear, planet gears, and ring gear. This solution integrates the hub motor and the reduction mechanism directly, enabling it to output greater torque and provide better power. Furthermore, the reduction mechanism is located on the side of the hub motor away from the spokes of the rim 2 (i.e., the open side near the rim 2), which allows for more installation space on the rim 2, facilitating the installation of subsequent components such as the brake 9, and significantly reducing the overall system size.

[0031] One end of the drive shaft is fixedly connected to the wheel rim 2, and the other end is connected to the kingpin steering knuckle 5. In implementation, a wheel rim 2 mounting flange is provided at the end of the drive shaft connected to the wheel rim 2. The wheel rim 2 is fitted onto the drive shaft and fixedly connected to the wheel rim 2 mounting flange by connecting bolts. A spur joint flange is provided at the end of the drive shaft connected to the kingpin steering knuckle 5, and the kingpin steering knuckle 5 is fixedly connected to the spur joint flange by connecting bolts.

[0032] An mounting ring 6 is provided inside the rim 2. The mounting ring 6 is located on the side of the rim 2 near the kingpin steering knuckle 5 and is fixedly connected to the side wall of the rim 2. In practice, both the rim 2 and the mounting ring 6 are made of alloy steel and are formed as a single piece. The brake disc includes a friction ring 31 and a connecting ring 32. The connecting ring 32 is wrapped around the outside of the friction ring 31 and is formed as a single piece with the friction ring 31. During processing, the connecting ring 32 is made of alloy steel, and the friction ring 31 is made of high thermal conductivity silicon carbide. The connecting ring 32 and the friction ring 31 are formed as a single piece with the friction ring 31 through a casting process. The brake disc is fixedly connected to the mounting ring 6 through the connecting ring 32. During assembly, the connecting ring 32 is located on the side near the friction ring 31, inside the mounting ring 6, and is fixedly connected to the mounting ring 6 through a thermally conductive bolt 7. The friction ring 31 passes through the mounting ring 6. This avoids thermal deformation of the non-coplanar connected brake disc flange due to heat, reducing brake thermal vibration. As an optimization, an annular thermally conductive phase-change silicone grease is provided between the connecting ring 32 and the mounting ring 6. This facilitates the transfer of heat generated by the friction ring 31 to the wheel rim 2, improving heat dissipation. Simultaneously, the thermally conductive phase-change silicone grease has a buffering effect, reducing vibration transmitted to the wheel rim 2 during braking. Several heat dissipation holes 8 are provided around the circumference of the friction ring 31, and these holes 8 are located on the side of the mounting ring 6 opposite to the connecting ring 32, ensuring ventilation and thus removing the heat generated by the brake disc during operation.

[0033] The brake caliper assembly is located radially inside the brake disc and includes a caliper bracket 41 and a caliper housing 42. Two opposing brake blocks are mounted on the caliper housing 42. A caliper mounting bracket is located on one side of the kingpin steering knuckle 5, and the caliper bracket 41 is fixedly connected to the caliper mounting bracket. The two brake blocks on the caliper housing 42 are distributed on both sides of the friction ring 31 axially. The kingpin steering knuckle 5 has a kingpin hole at its top for mounting a kingpin steering motor and a ball joint hole at its bottom for mounting a lower control arm.

[0034] In implementation, in the brake caliper, one brake block is fixedly connected to the caliper housing 42, and the other brake block is connected to the caliper housing 42 via a brake 9. The brake 9 can drive the brake block to move closer to or away from the other brake block. As an optimization, the brake 9 is an electromechanical brake 9, located on the side of the friction ring 31 away from the drive motor. The brake 9 includes an EMB motor and a ball screw. The motor shaft of the EMB motor is fixedly connected to the screw of the ball screw via a coupling. The brake block connected to the brake 9 is fixedly connected to the screw nut on the ball screw. During braking, the ball screw converts the rotational motion of the EMB motor into linear motion, thereby pushing the brake block to contact the brake disc first. The entire caliper body will move in the opposite direction under the action of the axial force of the ball screw, allowing the brake block on the other side to contact the brake disc; thus achieving clamping braking.

[0035] In this plan: By integrating the brake disc onto the wheel rim 2, the effective braking radius can be significantly increased. While providing the same braking torque, the clamping force of the caliper can be reduced, thus achieving miniaturization and weight reduction of the brake caliper, effectively lowering unsprung mass and improving vehicle handling stability. Furthermore, the brake 9 is driven by an EMB motor, resulting in faster braking response and effectively shortening the braking distance, thereby improving vehicle safety performance.

[0036] The friction disc is equipped with heat dissipation holes 8, which can quickly remove the heat generated by the brake disc during operation. Simultaneously, the connecting ring 32 of the friction disc is connected to the mounting ring 6 on the wheel rim 2 via heat-conducting bolts 7, thereby conducting the heat generated by the brake disc to the wheel rim 2, increasing the heat dissipation area, further improving the heat dissipation effect, and ensuring braking stability. The lower side of the kingpin steering knuckle 5 is provided with a ball joint hole for mounting the lower control arm. The kingpin steering knuckle 5 is connected to the lower control arm through the ball joint hole of the lower control arm, and the upper end is provided with a kingpin hole for mounting the kingpin steering motor. When the vehicle turns, the kingpin steering motor pushes the kingpin steering knuckle 5, causing the wheel to rotate around the kingpin.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A hub drive angle module integrated system, comprising a hub drive assembly, a wheel rim, a brake disc, a brake caliper assembly, and a kingpin steering knuckle; the hub drive assembly includes a hub motor, a reduction mechanism, and a drive shaft, wherein, The hub motor is connected to the drive shaft via a reduction mechanism; one end of the drive shaft is fixedly connected to the wheel rim, and the other end is connected to the kingpin steering knuckle; characterized in that: a mounting ring is provided inside the wheel rim, the mounting ring is located on the side of the wheel rim near the kingpin steering knuckle, and is fixedly connected to the side wall of the wheel rim; the brake disc includes a friction ring and a connecting ring, wherein the connecting ring is located outside the friction ring and is integrally formed with the friction ring, and the brake disc is fixedly connected to the mounting ring through the connecting ring; the brake caliper assembly is located on the radial inner side of the brake disc, and includes a caliper bracket and a caliper housing, on which two opposing brake blocks are provided; a caliper mounting bracket is provided on one side of the kingpin steering knuckle, the caliper bracket is fixedly connected to the caliper mounting bracket, and the two brake blocks on the caliper housing are distributed on both sides of the friction ring in the axial direction.

2. The hub drive angle module integrated system according to claim 1, characterized in that: A rim mounting flange is provided at one end of the drive shaft that is connected to the rim. The rim is fitted onto the drive shaft and is fixedly connected to the rim mounting flange by connecting bolts.

3. The hub drive angle module integrated system according to claim 1, characterized in that: The connecting ring is located on the side close to the friction ring. It is situated inside the mounting ring and is fixedly connected to the mounting ring via thermally conductive bolts. The friction ring passes through the mounting ring.

4. The hub drive angle module integrated system according to claim 1, characterized in that: The friction ring has several heat dissipation holes arranged around its circumference.

5. The hub drive angle module integrated system according to claim 1, characterized in that: The connecting ring is made of alloy steel, and the friction ring is made of high thermal conductivity silicon carbide. The connecting ring and the friction ring are formed into one piece by a melting and casting process.

6. The hub drive angle module integrated system according to claim 1, characterized in that: The reduction mechanism is a planetary reduction mechanism, which includes a sun gear, a planet carrier, planet gears and a gear ring. The sun gear is sleeved on the drive shaft and has a clearance fit with the drive shaft. The planet carrier is connected to the drive shaft through a spline. The inner rotor of the hub motor is connected to the sun gear through a connecting frame. The inner rotor can drive the drive shaft to rotate after passing through the sun gear, planet gears and gear ring.

7. The hub drive angle module integrated system according to claim 1, characterized in that: The drive shaft is connected to the kingpin steering knuckle at one end, and the kingpin steering knuckle is fixedly connected to the kingpin steering knuckle by connecting bolts.

8. The hub drive angle module integrated system according to claim 1, characterized in that: In the brake caliper, one brake block is fixedly connected to the caliper housing, and the other brake block is connected to the caliper housing through a brake. The brake can drive the brake block to move closer to or further away from the other brake block.

9. The hub drive angle module integrated system according to claim 8, characterized in that: The brake is an electromechanical brake and is located on the side of the friction ring away from the drive motor. The brake includes an EMB motor and a ball screw. The motor shaft of the EMB motor is fixedly connected to the screw of the ball screw through a coupling. The brake block connected to the brake is fixedly connected to the screw nut on the ball screw.

10. The hub drive angle module integrated system according to claim 1, characterized in that: The top of the kingpin steering knuckle has a kingpin hole for mounting the kingpin steering motor, and the bottom has a ball joint hole for mounting the lower control arm of the vehicle.

Images