WO2020181516A1 - Braking system of in-wheel drive system, in-wheel drive system and motor vehicle - Google Patents

Braking system of in-wheel drive system, in-wheel drive system and motor vehicle Download PDF

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Publication number
WO2020181516A1
WO2020181516A1 PCT/CN2019/077940 CN2019077940W WO2020181516A1 WO 2020181516 A1 WO2020181516 A1 WO 2020181516A1 CN 2019077940 W CN2019077940 W CN 2019077940W WO 2020181516 A1 WO2020181516 A1 WO 2020181516A1
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WIPO (PCT)
Prior art keywords
wheel drive
drive system
brake drum
brake
working part
Prior art date
Application number
PCT/CN2019/077940
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French (fr)
Chinese (zh)
Inventor
蔡向阳
Original Assignee
舍弗勒技术股份两合公司
蔡向阳
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Application filed by 舍弗勒技术股份两合公司, 蔡向阳 filed Critical 舍弗勒技术股份两合公司
Priority to PCT/CN2019/077940 priority Critical patent/WO2020181516A1/en
Publication of WO2020181516A1 publication Critical patent/WO2020181516A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/10—Drums for externally- or internally-engaging brakes

Definitions

  • the present invention relates to the technical field of motor vehicles, in particular to a braking system used in an in-wheel drive system of a motor vehicle, an in-wheel drive system and a motor vehicle.
  • Motor vehicles such as the in-wheel drive system of new energy vehicles, generally include the drive motor, planetary gear reducer, wheel bearing and braking system in the wheel space.
  • the drive motor can be used directly without a transmission and drive shaft. Drive the wheels.
  • the in-wheel drive system has many components arranged in a limited space, these components will generate heat under working conditions, which causes the problem of heat dissipation. Especially when braking, the temperature of the brake drum is very high. If the heat is not well dissipated, the in-wheel drive system will cause problems.
  • An inventive object of the present invention is to provide a braking system for the in-wheel drive system of a motor vehicle, so that the braking system of the in-wheel drive system in the prior art has better heat dissipation performance.
  • Another object of the present invention is to provide an in-wheel drive system including the aforementioned braking system.
  • Another object of the present invention is to provide a motor vehicle including the aforementioned braking system or the aforementioned in-wheel drive system.
  • the present invention provides a brake system of an in-wheel drive system.
  • the brake system includes a brake drum and a brake shoe.
  • the brake drum has a cylindrical working part, and the working part has The inner circumferential surface and the outer circumferential surface, the inner circumferential surface is used for friction with the brake shoe to achieve braking, the outer circumferential surface of the brake drum has a radially outward convex of the brake drum A plurality of fan blades, when the in-wheel drive system is working, the brake drum rotates, the fan blades push the air in the in-wheel drive system out of the in-wheel drive system or drive the in-wheel drive system The air outside the system is pushed into the in-wheel drive system.
  • the fan blades extend curvedly between two ends of the working part in the axial direction.
  • the line connecting the two ends of the working part of the fan blade in the axial direction is inclined with respect to the axial direction of the working part.
  • the brake drum further includes a substantially annular end perpendicular to the axial direction of the brake drum, and the end is connected to the brake drum on one side of the axial direction of the brake drum.
  • Working part, the end part and the working part enclose a chamber for accommodating the brake shoe.
  • the fan blade has an end located on the other axial side of the brake drum, and the end is substantially tangent to the axial direction of the working part.
  • the present invention also provides an in-wheel drive system, which includes a drive motor and a braking system according to the present invention, and the brake drum receives rotational drive force from a rotor of the drive motor.
  • the in-wheel drive system further includes a cover that encloses an installation space for installing the brake drum, and the cover has ventilation on the radially outer side of the brake drum.
  • the working part of the brake drum communicates with the outside of the installation space through the ventilation window.
  • the cover has a circumferential portion located on the radially outer side of the brake drum and a radial portion located on one axial side of the brake drum, and the circumferential portion has an edge A plurality of columns extending in the axial direction and arranged in a circumferential direction, the columns extending between the two ends of the cover in the axial direction, and between two adjacent columns
  • the ventilation window is formed.
  • the in-wheel drive system further includes a planetary gear reducer, and the sun gear shaft of the planetary gear reducer is connected to the rotor bracket of the rotor of the drive motor to receive the rotational drive of the drive motor,
  • the brake drum has a substantially annular end that is perpendicular to the axial direction of the brake drum, and the end is connected to an axial end of the working part, and the end and the working part enclose A chamber containing the brake shoe,
  • the other axial end of the sun gear shaft is connected to the toothed structure of the connecting portion on the axial side of the end to transmit the rotation drive.
  • the present invention also provides a motor vehicle including the braking system according to the present invention or the in-wheel drive system according to the present invention.
  • the brake drum with fan blades rotates like a fan, so that the air around the brake drum flows, and the heat of the drive system in the wheel can be quickly released with the airflow.
  • the fan blades also make the brake drum The increased heat dissipation surface area is conducive to rapid heat dissipation.
  • FIG. 1 is a schematic cross-sectional view showing the structure of an in-wheel drive system according to an embodiment of the present invention
  • Figure 2 is a perspective schematic view of Figure 1;
  • FIG. 3 is a schematic perspective view showing the structure of a brake drum of the in-wheel drive system in FIG. 1.
  • axial refers to the axial, radial and circumferential directions of the brake drum of the in-wheel drive system, respectively, and the axial side refers to the left in Figure 1 The other side in the axial direction refers to the right side in FIG. 1.
  • the in-wheel drive system includes a housing 11, a housing cover 12, a drive motor, a rotor support 6, a planetary gear reducer, an output shaft 4, and a brake assembly. Dynamic system.
  • the housing 11 and the housing cover 12 are butted together along the axial direction A so as to enclose a first installation space, and the drive motor and the rotor support 6 are all accommodated in the first installation space.
  • the sun gear shaft 31 is in the first installation space. Install on the radial inner side of the installation space.
  • the planet gear 32 of the planetary gear reducer meshes with the sun gear shaft 31 and the ring gear 33, and the planet gear carrier supports the planet gear 32 and is connected to the output shaft 4.
  • the drive motor includes a stator 21 and a rotor 22.
  • the rotor 22 can rotate relative to the stator 21 on the radial inner side of the stator 21, and the rotor support 6 is fixed to the rotor 22 on the radial inner side of the rotor 22.
  • the sun gear shaft 31 is a hollow shaft.
  • the output shaft 4 is installed inside the sun gear shaft 31 and protrudes from one axial side of the sun gear shaft 31 to connect to the wheels.
  • a wheel bearing 71 is provided between the output shaft 4 and the sun gear shaft 31.
  • the drive motor, planetary gear reducer, wheel bearing 71 and output shaft 4 are coaxially arranged, so that the in-wheel drive system requires less space in the wheel.
  • the rotational drive of the drive motor is sequentially transmitted to the wheels via the rotor 22, the rotor support 6, the sun gear shaft 31, the planet gear carrier, and the output shaft 4.
  • the brake system includes a brake drum 51 and a brake shoe 52.
  • the brake drum 51 and the brake shoe 52 face each other in the axial direction A.
  • the outer peripheral surface of the brake shoe 52 and the inner peripheral surface of the brake drum 51 rub against each other. brake.
  • the sun gear shaft 31 extends in the axial direction A, the end of the sun gear shaft 31 on one axial side meshes with the planetary gear 32, and the end of the sun gear shaft 31 on the other axial side is fixedly connected to the brake drum 51 to be connected to the brake system
  • the rotation drive of the driving motor is transmitted, and the part between the two ends in the axial direction A of the sun gear shaft 31 is fixed to the rotor support 6.
  • the rotation speed of the output shaft 4 is the same as the rotation speed of the wheels.
  • Various speeds of the brake drum 51 can be obtained by designing the transmission ratio of the planetary gear reducer. For example, if the transmission ratio is designed to be 3.2, then the rotation speed of the brake drum 51 is The rotation speed of the wheel is 3.2 times.
  • the solution of using the sun gear shaft 31 of the planetary gear reducer to transmit the rotational drive of the driving motor to the brake drum 51 can achieve higher efficiency.
  • the in-wheel drive system may also include a steering knuckle sleeve 9 located between the sun wheel shaft 31 and the wheel bearing 71 to cooperate with other components of the steering knuckle assembly to control the steering of the wheels.
  • the radially inner ends of the brake drum 51 and the brake shoe 52 are sleeved on the knuckle sleeve 9.
  • the housing cover 12 has a circumferential portion 123, a first radial portion 121, and a second radial portion 122.
  • the circumferential portion 123 is formed in a cylindrical shape on the radially outer side of the brake drum 51.
  • the first radial portion 121 is formed in a ring shape in a plane perpendicular to the axial direction A, and the first radial portion 121 is located on one axial side of the brake drum 51 and the other axial side of the rotor 22 of the drive motor.
  • the second radial portion 122 is formed in a ring shape in a plane perpendicular to the axial direction A, and the second radial portion 122 is located on the radially outer side of the circumferential portion 123.
  • annular packaging cover 13 on the other axial side of the braking system.
  • the radially outer part of the packaging cover 13 is connected to the circumferential portion 123 of the housing cover 12, so that the packaging cover 13 and the housing cover 12 are common
  • a substantially cylindrical second installation space is enclosed, and the brake drum 51 and the brake shoe 52 are installed in the second installation space.
  • the housing cover 12 also serves as a cover surrounding the brake drum 51.
  • the circumferential portion 123 of the housing cover 12 has a ventilation window 1231 on the radially outer side of the brake drum 51, and the ventilation window 1231 is formed by removing a part of the body of the circumferential portion 123 of the housing cover 12.
  • the working part 511 communicates with the outside of the second installation space through the ventilation window 1231, so that the heat generated by the working part 511 of the brake drum 51 can be easily released from the ventilation window 1231 outside the second installation space.
  • the circumferential portion 123 of the housing cover 12 also has a plurality of columns 1232 distributed along the circumferential direction. Each column 1232 extends between the two ends of the housing cover 12 in the axial direction A.
  • the circumferential portion 123 of the housing cover 12 between the pillars 1232 is removed to form the aforementioned ventilation window 1231 between two adjacent pillars 1232.
  • the housing cover 12 (circumferential portion 123) is formed as a frame structure, which is beneficial to obtain a larger ventilation window 1231 for releasing heat, so that the heat can be released more easily.
  • Two ends of the cylinder 1232 may be connected to the other axial side of the second radial portion 122 of the packaging cover 13 and the housing cover 12 respectively.
  • the brake drum 51 has a working portion 511 and an end portion 512.
  • the working portion 511 is formed into a cylindrical shape around the rotation axis of the brake drum 51, and the end portion 512 is connected to the brake drum 51 on the axial side
  • the working part 511 is formed in a ring shape.
  • the working part 511 and the end 512 of the brake drum 51 enclose a substantially cylindrical cavity for installing the brake shoe 52.
  • the end 512 of the brake drum 51 is on the axial side It is connected to the end of the sun gear shaft 31 on the other side in the axial direction.
  • the brake drum 51 also has a connecting portion 514.
  • the connecting portion 514 protrudes from the radial inner side of the end portion 512 to the axial side to form a cylindrical shape.
  • the cylindrical shape formed by the connecting portion 514 is the same as that of the working portion 511. axis.
  • the other end of the connecting portion 514 in the axial direction A is connected to the end portion 512.
  • One end of the connecting portion 514 in the axial direction A has a toothed structure 5140.
  • the toothed structure 5140 extends from one end of the connecting portion 514 in the axial direction A to the shaft. Protruding to one side.
  • the other end of the sun gear shaft 31 in the axial direction A has a receiving groove for receiving the tooth structure 5140.
  • the tooth structure 5140 is inserted into the receiving groove so that the brake drum 51 is connected to the sun gear shaft 31 in a torsionally resistant manner.
  • the brake drum 51 is connected to the other end of the sun gear shaft 31 in the axial direction A in a torsion-proof connection via an end spline on its radially inner side. 3, the brake drum 51 may be additionally connected to the other end of the sun gear shaft 31 in the axial direction A by screws.
  • the brake drum 51 has a plurality of fan blades 513 protruding radially outward on the outer peripheral surface of the working part 511.
  • the plurality of fan blades 513 are distributed in the circumferential direction.
  • the fan blades 513 are from one end of the working part 511 in the axial direction A. It extends to the other end in the axial direction A, so that the fan blade 513 covers all of the working part 511 in the axial direction A.
  • the fan blade 513 is curved in an arc shape during the extension process, and the curved fan blade 513 is more conducive to air flow.
  • the blades 513 extend obliquely with respect to the axial direction of the brake drum 51, and the inclination directions of the plurality of blades 513 are the same. More specifically, the line connecting the two axial ends of the fan blade 513 is inclined with respect to the axial direction of the brake drum 51.
  • the brake drum 51 with the fan blades 513 rotates like a fan, so that the air around the brake drum 51 flows, and the heat generated by braking can be quickly released with the airflow.
  • the fan blades 513 also make The heat dissipation surface area of the brake drum 51 is increased, which facilitates rapid heat dissipation. It should be understood that even when not braking, the brake drum 51 plays a cooling role.
  • the brake drum 51 when viewed from the other side of the brake drum 51 in the axial direction A, the brake drum 51 rotates in the clockwise direction.
  • the air flow to the other side of the axial direction is conducive to releasing the heat in the in-wheel drive system along with the air flow out of the second installation space, thereby reducing the temperature of the in-wheel drive system.
  • the inclination of the fan blades 513 of the brake drum 51 can also be adjusted, so that the brake drum 51 is used to push the cold air outside the in-wheel drive system into the in-wheel drive system, especially into the second installation space.
  • the end of the fan blade 513 on the other side in the axial direction may be tangent to the axial direction A of the brake drum 51, which is more conducive to guiding the air out of the second installation space.
  • the in-wheel drive system according to the present invention may also include other necessary components that are not described in the foregoing specific embodiments.
  • the radial gap between the sun gear shaft 31 and the housing 11 and the housing cover 12 is provided with two support bearings 72a, 72b arranged in the axial direction A and two support bearings 72a and 72b arranged in the axial direction A.
  • the output shaft 4 has a shaft portion and a flange portion, a sealing assembly 102 may be provided between the flange portion and the housing 11, and a sealing assembly 103 may be provided between the flange portion and the sun gear shaft 31.
  • a thrust roller bearing 73 is provided in the axial gap between the housing 11 and the planetary gear carrier to support the planetary gear carrier in the axial direction A.
  • the wheel bearing 71 can be mounted on the shaft portion by fitting the wheel bearing lock nut 710 and the shaft portion.
  • the in-wheel drive system may also include a sensor 8 located in the first installation space, and the sensor 8 is used to monitor parameters such as the rotational speed of the driving motor.
  • the in-wheel drive system may be connected to the suspension of the motor vehicle through
  • the present invention also provides a motor vehicle having the above-mentioned in-wheel drive system.
  • the blade 513 may extend obliquely but linearly with respect to the axial direction A of the brake drum 51, or may extend in a broken line shape, and the blade 513 may be bent as long as it can guide the airflow.
  • the fan blade 513 may be a sheet-shaped body, a plate-shaped body, or a strip-shaped body.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

A braking system for an in-wheel drive system. The braking system comprises a brake drum (51) and a brake shoe (52). The brake drum (51) has a cylindrical working part, and the working part has an inner circumferential surface and an outer circumferential surface. The inner circumferential surface is used for rubbing against the brake shoe (52) to achieve braking. The brake drum (51) has a plurality of fan blades (513) projecting toward the radial outer side of the brake drum (51) on the outer circumferential surface. When the in-wheel drive system is operating, the brake drum (51) rotates, and the fan blades (513) push air in the in-wheel drive system out of the system or push the air outside of the in-wheel drive system into the system. When a vehicle is being driven, the brake drum (51) which has the fan blades (513) rotates like a fan, so that air around the brake drum (51) flows, and heat in the in-wheel drive system may be quickly released along with the air flow. In addition, the fan blades (513) also increase the heat dissipation surface area of the brake drum (51), which facilitates rapid heat dissipation. Also provided is the in-wheel drive system and a motor vehicle.

Description

轮内驱动***的制动***、轮内驱动***和机动车Braking system of in-wheel drive system, in-wheel drive system and motor vehicle 技术领域Technical field
本发明涉及机动车技术领域，具体地涉及用于机动车的轮内驱动***的制动***、轮内驱动***和机动车。The present invention relates to the technical field of motor vehicles, in particular to a braking system used in an in-wheel drive system of a motor vehicle, an in-wheel drive system and a motor vehicle.
背景技术Background technique
机动车，比如新能源车辆的轮内驱动***一般包括在轮内空间的驱动电机、行星齿轮减速器、车轮轴承和制动***等，可以在不具有变速器和驱动轴的情况下利用驱动电机直接驱动车轮。Motor vehicles, such as the in-wheel drive system of new energy vehicles, generally include the drive motor, planetary gear reducer, wheel bearing and braking system in the wheel space. The drive motor can be used directly without a transmission and drive shaft. Drive the wheels.
由于轮内驱动***在有限的空间内布置了较多的部件，因而，在工作状态下，这些部件将产生热量，这就存在散热的问题。尤其是在制动时，制动鼓的温度非常高，如果不能良好地进行散热，那么轮内驱动***将产生问题。Since the in-wheel drive system has many components arranged in a limited space, these components will generate heat under working conditions, which causes the problem of heat dissipation. Especially when braking, the temperature of the brake drum is very high. If the heat is not well dissipated, the in-wheel drive system will cause problems.
发明内容Summary of the invention
基于上述现有技术的缺陷做出了本发明。本发明的一个发明目的在于提供一种用于机动车的轮内驱动***的制动***，使得相比于现有技术的轮内驱动***的制动***具有更好的散热性能。本发明的另一发明目的在于提供一种包括上述制动***的轮内驱动***。本发明的又一发明目的在于提供一种包括上述制动***或上述轮内驱动***的机动车。The present invention was made based on the above-mentioned defects of the prior art. An inventive object of the present invention is to provide a braking system for the in-wheel drive system of a motor vehicle, so that the braking system of the in-wheel drive system in the prior art has better heat dissipation performance. Another object of the present invention is to provide an in-wheel drive system including the aforementioned braking system. Another object of the present invention is to provide a motor vehicle including the aforementioned braking system or the aforementioned in-wheel drive system.
为实现上述发明目的，本发明提供一种轮内驱动***的制动***，该制动***包括制动鼓和制动蹄，所述制动鼓具有筒形的工作部，所述工作部具有内周面和外周面，所述内周面用于与所述制动蹄摩擦从而实现制动，所述制动鼓在所述外周面具有向所述制动鼓的径向外侧凸出的多个扇叶，在所述轮内驱动***工作时，所述制动鼓转动，所述扇叶将所述轮内驱动***内的 空气推出所述轮内驱动***或者将所述轮内驱动***外的空气推入所述轮内驱动***。In order to achieve the above-mentioned object of the invention, the present invention provides a brake system of an in-wheel drive system. The brake system includes a brake drum and a brake shoe. The brake drum has a cylindrical working part, and the working part has The inner circumferential surface and the outer circumferential surface, the inner circumferential surface is used for friction with the brake shoe to achieve braking, the outer circumferential surface of the brake drum has a radially outward convex of the brake drum A plurality of fan blades, when the in-wheel drive system is working, the brake drum rotates, the fan blades push the air in the in-wheel drive system out of the in-wheel drive system or drive the in-wheel drive system The air outside the system is pushed into the in-wheel drive system.
在至少一个实施方式中，所述扇叶在所述工作部的轴向上的两端之间弯曲地延伸。In at least one embodiment, the fan blades extend curvedly between two ends of the working part in the axial direction.
在至少一个实施方式中，所述扇叶的所述工作部的轴向上的两端的连线相对于所述工作部的轴向倾斜。In at least one embodiment, the line connecting the two ends of the working part of the fan blade in the axial direction is inclined with respect to the axial direction of the working part.
在至少一个实施方式中，所述制动鼓还包括垂直于所述制动鼓的轴向大致呈环形的端部，所述端部在所述制动鼓的轴向一侧连接于所述工作部，所述端部和所述工作部围成容纳所述制动蹄的腔室，在所述制动鼓转动时，所述扇叶将所述轮内驱动***内的空气推出所述轮内驱动***。In at least one embodiment, the brake drum further includes a substantially annular end perpendicular to the axial direction of the brake drum, and the end is connected to the brake drum on one side of the axial direction of the brake drum. Working part, the end part and the working part enclose a chamber for accommodating the brake shoe. When the brake drum rotates, the fan blade pushes the air in the in-wheel drive system out of the In-wheel drive system.
在至少一个实施方式中，所述扇叶具有位于所述制动鼓的轴向另一侧的端部，所述端部大致与所述工作部的轴向相切。In at least one embodiment, the fan blade has an end located on the other axial side of the brake drum, and the end is substantially tangent to the axial direction of the working part.
本发明还提供一种轮内驱动***，该轮内驱动***包括驱动电机和根据本发明的制动***，所述制动鼓从所述驱动电机的转子接收转动驱动力。The present invention also provides an in-wheel drive system, which includes a drive motor and a braking system according to the present invention, and the brake drum receives rotational drive force from a rotor of the drive motor.
在至少一个实施方式中，所述轮内驱动***还包括罩体，所述罩体围成安装所述制动鼓的安装空间，所述罩体在所述制动鼓的径向外侧具有通风窗，所述制动鼓的工作部通过所述通风窗与所述安装空间的外部连通。In at least one embodiment, the in-wheel drive system further includes a cover that encloses an installation space for installing the brake drum, and the cover has ventilation on the radially outer side of the brake drum. The working part of the brake drum communicates with the outside of the installation space through the ventilation window.
在至少一个实施方式中，所述罩体具有位于所述制动鼓的径向外侧的周向部分和位于所述制动鼓的轴向一侧的径向部分，所述周向部分具有沿周向分散排布的沿所述轴向延伸的多个柱体，所述柱体在所述罩体的轴向上的两端之间延伸，在相邻的两个所述柱体之间形成所述通风窗。In at least one embodiment, the cover has a circumferential portion located on the radially outer side of the brake drum and a radial portion located on one axial side of the brake drum, and the circumferential portion has an edge A plurality of columns extending in the axial direction and arranged in a circumferential direction, the columns extending between the two ends of the cover in the axial direction, and between two adjacent columns The ventilation window is formed.
在至少一个实施方式中，所述轮内驱动***还包括行星齿轮减速器，所述行星齿轮减速器的太阳轮轴连接于所述驱动电机的转子的转子支架以接收所述驱动电机的转动驱动，In at least one embodiment, the in-wheel drive system further includes a planetary gear reducer, and the sun gear shaft of the planetary gear reducer is connected to the rotor bracket of the rotor of the drive motor to receive the rotational drive of the drive motor,
所述制动鼓具有垂直于所述制动鼓的轴向的大致呈环形的端部，所述端部连接于所述工作部的轴向一端，所述端部和所述工作部围成容纳所述制动 蹄的腔室，The brake drum has a substantially annular end that is perpendicular to the axial direction of the brake drum, and the end is connected to an axial end of the working part, and the end and the working part enclose A chamber containing the brake shoe,
所述太阳轮轴的轴向另一端连接于所述端部的轴向一侧的连接部的齿形结构以传递所述转动驱动。The other axial end of the sun gear shaft is connected to the toothed structure of the connecting portion on the axial side of the end to transmit the rotation drive.
本发明还提供一种机动车，该机动车包括根据本发明的制动***或根据本发明的轮内驱动***。The present invention also provides a motor vehicle including the braking system according to the present invention or the in-wheel drive system according to the present invention.
本发明通过以上技术方案至少可以获得以下技术效果：The present invention can at least obtain the following technical effects through the above technical solutions:
当车辆行驶时，具有扇叶的制动鼓像风扇一样转动，从而制动鼓周围的空气流动，轮内驱动***的热量可以随着气流被快速地释放，此外，扇叶还使得制动鼓的散热表面积增加，有利于快速散热。When the vehicle is running, the brake drum with fan blades rotates like a fan, so that the air around the brake drum flows, and the heat of the drive system in the wheel can be quickly released with the airflow. In addition, the fan blades also make the brake drum The increased heat dissipation surface area is conducive to rapid heat dissipation.
附图说明Description of the drawings
图1是示出了根据本发明的一个具体实施方式的轮内驱动***的结构的剖视示意图；1 is a schematic cross-sectional view showing the structure of an in-wheel drive system according to an embodiment of the present invention;
图2是图1的立体示意图；Figure 2 is a perspective schematic view of Figure 1;
图3是示出了图1中的轮内驱动***的制动鼓的结构的立体示意图。FIG. 3 is a schematic perspective view showing the structure of a brake drum of the in-wheel drive system in FIG. 1.
附图标记说明：Description of reference signs:
11壳体；12壳体盖；121第一径向部分；122第二径向部分；123周向部分；1231通风窗；1232柱体；13封装盖；21定子；22转子；31太阳轮轴；32行星齿轮；33齿圈；4输出轴；51制动鼓；511工作部；512端部；513扇叶；514连接部；5140齿形结构；52制动蹄；6转子支架；71车轮轴承；710车轮轴承锁紧螺母；72a、72b支撑轴承；73推力滚子轴承；8传感器；9转向节套筒；101、102、103密封组件；11 housing; 12 housing cover; 121 first radial part; 122 second radial part; 123 circumferential part; 1231 ventilation window; 1232 cylinder; 13 packaging cover; 21 stator; 22 rotor; 31 sun gear shaft; 32 planetary gears; 33 ring gears; 4 output shafts; 51 brake drums; 511 working parts; 512 ends; 513 blades; 514 connecting parts; 5140 tooth structure; 52 brake shoes; 6 rotor brackets; 71 wheel bearings 710 wheel bearing lock nut; 72a, 72b support bearing; 73 thrust roller bearing; 8 sensor; 9 steering knuckle sleeve; 101, 102, 103 seal assembly;
A轴向；R径向。A axial direction; R radial direction.
具体实施方式detailed description
下面参照附图描述本发明的示例性实施方式。The exemplary embodiments of the present invention are described below with reference to the drawings.
在本说明书中，“轴向”、“径向”和“周向”分别是轮内驱动***的制动鼓的轴向、径向和周向，轴向一侧是指图1中的左侧，轴向另一侧是指图1中的右侧。In this specification, "axial", "radial" and "circumferential" refer to the axial, radial and circumferential directions of the brake drum of the in-wheel drive system, respectively, and the axial side refers to the left in Figure 1 The other side in the axial direction refers to the right side in FIG. 1.
如图1所示，根据本发明的一个具体实施方式的轮内驱动***包括组装在一起的壳体11、壳体盖12、驱动电机、转子支架6、行星齿轮减速器、输出轴4和制动***。As shown in FIG. 1, the in-wheel drive system according to a specific embodiment of the present invention includes a housing 11, a housing cover 12, a drive motor, a rotor support 6, a planetary gear reducer, an output shaft 4, and a brake assembly. Dynamic system.
壳体11和壳体盖12沿轴向A对接在一起从而围成第一安装空间，驱动电机、转子支架6均容纳在该第一安装空间内。The housing 11 and the housing cover 12 are butted together along the axial direction A so as to enclose a first installation space, and the drive motor and the rotor support 6 are all accommodated in the first installation space.
在第一安装空间的轴向一侧安装行星齿轮减速器的行星齿轮32、齿圈33和行星齿轮架，在第一安装空间的轴向另一侧安装制动***，太阳轮轴31在第一安装空间的径向内侧安装。Install the planetary gear 32, the ring gear 33 and the planetary carrier of the planetary gear reducer on the axial side of the first installation space, and install the brake system on the other axial side of the first installation space. The sun gear shaft 31 is in the first installation space. Install on the radial inner side of the installation space.
行星齿轮减速器的行星齿轮32与太阳轮轴31和齿圈33啮合，行星齿轮架支撑行星齿轮32并连接于输出轴4。The planet gear 32 of the planetary gear reducer meshes with the sun gear shaft 31 and the ring gear 33, and the planet gear carrier supports the planet gear 32 and is connected to the output shaft 4.
驱动电机包括定子21和转子22，转子22在定子21的径向内侧能够相对于定子21转动，转子支架6在转子22的径向内侧固定于转子22。The drive motor includes a stator 21 and a rotor 22. The rotor 22 can rotate relative to the stator 21 on the radial inner side of the stator 21, and the rotor support 6 is fixed to the rotor 22 on the radial inner side of the rotor 22.
太阳轮轴31为空心轴，输出轴4在太阳轮轴31的内部安装，并从太阳轮轴31的轴向一侧伸出进而连接至车轮，输出轴4与太阳轮轴31之间具有车轮轴承71。驱动电机、行星齿轮减速器、车轮轴承71和输出轴4同轴配置，从而轮内驱动***在车轮内所需的空间较小。The sun gear shaft 31 is a hollow shaft. The output shaft 4 is installed inside the sun gear shaft 31 and protrudes from one axial side of the sun gear shaft 31 to connect to the wheels. A wheel bearing 71 is provided between the output shaft 4 and the sun gear shaft 31. The drive motor, planetary gear reducer, wheel bearing 71 and output shaft 4 are coaxially arranged, so that the in-wheel drive system requires less space in the wheel.
驱动电机的转动驱动依次经由转子22、转子支架6、太阳轮轴31、行星齿轮架、输出轴4而传递至车轮。The rotational drive of the drive motor is sequentially transmitted to the wheels via the rotor 22, the rotor support 6, the sun gear shaft 31, the planet gear carrier, and the output shaft 4.
制动***包括制动鼓51和制动蹄52，制动鼓51和制动蹄52在轴向A上彼此相对，制动蹄52的外周面与制动鼓51的内周面摩擦而实现制动。The brake system includes a brake drum 51 and a brake shoe 52. The brake drum 51 and the brake shoe 52 face each other in the axial direction A. The outer peripheral surface of the brake shoe 52 and the inner peripheral surface of the brake drum 51 rub against each other. brake.
太阳轮轴31沿轴向A延伸，太阳轮轴31的轴向一侧的端部与行星齿轮32 啮合，太阳轮轴31的轴向另一侧的端部与制动鼓51固定连接以向制动***传递驱动电机的转动驱动，太阳轮轴31的轴向A上的两端之间的部分与转子支架6固定。The sun gear shaft 31 extends in the axial direction A, the end of the sun gear shaft 31 on one axial side meshes with the planetary gear 32, and the end of the sun gear shaft 31 on the other axial side is fixedly connected to the brake drum 51 to be connected to the brake system The rotation drive of the driving motor is transmitted, and the part between the two ends in the axial direction A of the sun gear shaft 31 is fixed to the rotor support 6.
输出轴4的旋转速度与车轮的旋转速度相同，通过设计行星齿轮减速器的传动比可以获得制动鼓51的各种转速，比如将传动比设计为3.2，那么制动鼓51的旋转速度为车轮的旋转速度的3.2倍。The rotation speed of the output shaft 4 is the same as the rotation speed of the wheels. Various speeds of the brake drum 51 can be obtained by designing the transmission ratio of the planetary gear reducer. For example, if the transmission ratio is designed to be 3.2, then the rotation speed of the brake drum 51 is The rotation speed of the wheel is 3.2 times.
采用行星齿轮减速器的太阳轮轴31将驱动电机的转动驱动传递至制动鼓51的方案能够获得较高的效率。The solution of using the sun gear shaft 31 of the planetary gear reducer to transmit the rotational drive of the driving motor to the brake drum 51 can achieve higher efficiency.
轮内驱动***还可以包括转向节套筒9，转向节套筒9位于太阳轮轴31和车轮轴承71之间，以配合转向节组件的其它部件实现对车轮的转向控制。制动鼓51和制动蹄52的径向内端套装于转向节套筒9。The in-wheel drive system may also include a steering knuckle sleeve 9 located between the sun wheel shaft 31 and the wheel bearing 71 to cooperate with other components of the steering knuckle assembly to control the steering of the wheels. The radially inner ends of the brake drum 51 and the brake shoe 52 are sleeved on the knuckle sleeve 9.
如图1和图2所示，壳体盖12具有周向部分123、第一径向部分121和第二径向部分122，周向部分123在制动鼓51的径向外侧形成为筒形，第一径向部分121在垂直于轴向A的平面内形成为环形，第一径向部分121位于制动鼓51的轴向一侧，以及驱动电机的转子22的轴向另一侧。第二径向部分122在垂直于轴向A的平面内形成为环形，第二径向部分122位于周向部分123的径向外侧。As shown in FIGS. 1 and 2, the housing cover 12 has a circumferential portion 123, a first radial portion 121, and a second radial portion 122. The circumferential portion 123 is formed in a cylindrical shape on the radially outer side of the brake drum 51. , The first radial portion 121 is formed in a ring shape in a plane perpendicular to the axial direction A, and the first radial portion 121 is located on one axial side of the brake drum 51 and the other axial side of the rotor 22 of the drive motor. The second radial portion 122 is formed in a ring shape in a plane perpendicular to the axial direction A, and the second radial portion 122 is located on the radially outer side of the circumferential portion 123.
在制动***的轴向另一侧还具有环状的封装盖13，该封装盖13的径向外侧部与壳体盖12的周向部分123连接，从而封装盖13与壳体盖12共同围成大致柱形的第二安装空间，制动鼓51和制动蹄52安装于第二安装空间。可见，壳体盖12还作为围绕制动鼓51的罩体。There is also an annular packaging cover 13 on the other axial side of the braking system. The radially outer part of the packaging cover 13 is connected to the circumferential portion 123 of the housing cover 12, so that the packaging cover 13 and the housing cover 12 are common A substantially cylindrical second installation space is enclosed, and the brake drum 51 and the brake shoe 52 are installed in the second installation space. It can be seen that the housing cover 12 also serves as a cover surrounding the brake drum 51.
壳体盖12的周向部分123在制动鼓51的径向外侧具有通风窗1231，通过去除壳体盖12的周向部分123的本体的一部分而形成该通风窗1231，制动鼓51的工作部511通过该通风窗1231与第二安装空间的外部连通，从而制动鼓 51的工作部511产生的热量可以容易地从该通风窗1231释放到第二安装空间之外。The circumferential portion 123 of the housing cover 12 has a ventilation window 1231 on the radially outer side of the brake drum 51, and the ventilation window 1231 is formed by removing a part of the body of the circumferential portion 123 of the housing cover 12. The working part 511 communicates with the outside of the second installation space through the ventilation window 1231, so that the heat generated by the working part 511 of the brake drum 51 can be easily released from the ventilation window 1231 outside the second installation space.
壳体盖12的周向部分123还具有沿周向分散排布的多个柱体1232，各柱体1232在壳体盖12的轴向A上的两端之间延伸，相邻的两个柱体1232之间的壳体盖12的周向部分123被去除从而在相邻的两个柱体1232之间形成上述通风窗1231。这样，壳体盖12(周向部分123)形成为框架结构，有利于获得更大的用于释放热量的通风窗1231，从而热量能够更加容易地释放出去。The circumferential portion 123 of the housing cover 12 also has a plurality of columns 1232 distributed along the circumferential direction. Each column 1232 extends between the two ends of the housing cover 12 in the axial direction A. The circumferential portion 123 of the housing cover 12 between the pillars 1232 is removed to form the aforementioned ventilation window 1231 between two adjacent pillars 1232. In this way, the housing cover 12 (circumferential portion 123) is formed as a frame structure, which is beneficial to obtain a larger ventilation window 1231 for releasing heat, so that the heat can be released more easily.
柱体1232的两端可以分别连接于封装盖13和壳体盖12的第二径向部分122的轴向另一侧。Two ends of the cylinder 1232 may be connected to the other axial side of the second radial portion 122 of the packaging cover 13 and the housing cover 12 respectively.
如图3所示，制动鼓51具有工作部511和端部512，工作部511绕制动鼓51的转动轴线形成为筒形，端部512在制动鼓51的轴向一侧连接于工作部511并且形成为环形，制动鼓51的工作部511和端部512围成大致柱形的腔室以用于安装制动蹄52，制动鼓51的端部512的轴向一侧连接于太阳轮轴31的轴向另一侧的端部。As shown in Figure 3, the brake drum 51 has a working portion 511 and an end portion 512. The working portion 511 is formed into a cylindrical shape around the rotation axis of the brake drum 51, and the end portion 512 is connected to the brake drum 51 on the axial side The working part 511 is formed in a ring shape. The working part 511 and the end 512 of the brake drum 51 enclose a substantially cylindrical cavity for installing the brake shoe 52. The end 512 of the brake drum 51 is on the axial side It is connected to the end of the sun gear shaft 31 on the other side in the axial direction.
制动鼓51还具有连接部514，连接部514从端部512的径向内侧向轴向一侧凸出而形成为筒形，连接部514形成的筒形与工作部511形成的筒形同轴。连接部514在轴向A上的另一端连接于端部512，连接部514在轴向A上的一端具有齿形结构5140，齿形结构5140从连接部514在轴向A上的一端向轴向一侧凸出。相应地，太阳轮轴31在轴向A上的另一端具有收纳该齿形结构5140的收纳凹槽。齿形结构5140***收纳凹槽从而制动鼓51抗扭地连接于太阳轮轴31。更简单地说，制动鼓51经由其径向内侧部的端部花键与太阳轮轴31在轴向A上的另一端抗扭连接。参照图3，制动鼓51还可以额外地通过螺钉连接到太阳轮轴31在轴向A上的另一端。The brake drum 51 also has a connecting portion 514. The connecting portion 514 protrudes from the radial inner side of the end portion 512 to the axial side to form a cylindrical shape. The cylindrical shape formed by the connecting portion 514 is the same as that of the working portion 511. axis. The other end of the connecting portion 514 in the axial direction A is connected to the end portion 512. One end of the connecting portion 514 in the axial direction A has a toothed structure 5140. The toothed structure 5140 extends from one end of the connecting portion 514 in the axial direction A to the shaft. Protruding to one side. Correspondingly, the other end of the sun gear shaft 31 in the axial direction A has a receiving groove for receiving the tooth structure 5140. The tooth structure 5140 is inserted into the receiving groove so that the brake drum 51 is connected to the sun gear shaft 31 in a torsionally resistant manner. To put it more simply, the brake drum 51 is connected to the other end of the sun gear shaft 31 in the axial direction A in a torsion-proof connection via an end spline on its radially inner side. 3, the brake drum 51 may be additionally connected to the other end of the sun gear shaft 31 in the axial direction A by screws.
制动鼓51在工作部511的外周面具有向径向外侧凸出的多个扇叶513，多 个扇叶513沿周向分散布置，扇叶513从工作部511的轴向A上的一端延伸至轴向A上的另一端，从而扇叶513在轴向A上覆盖工作部511的全部，扇叶513在延伸的过程中呈弧形弯曲，弯曲的扇叶513将更利于空气流动。扇叶513相对于制动鼓51的轴向倾斜地延伸，多个扇叶513的倾斜方向相同。更具体地，扇叶513的轴向两端的连线相对于制动鼓51的轴向倾斜。The brake drum 51 has a plurality of fan blades 513 protruding radially outward on the outer peripheral surface of the working part 511. The plurality of fan blades 513 are distributed in the circumferential direction. The fan blades 513 are from one end of the working part 511 in the axial direction A. It extends to the other end in the axial direction A, so that the fan blade 513 covers all of the working part 511 in the axial direction A. The fan blade 513 is curved in an arc shape during the extension process, and the curved fan blade 513 is more conducive to air flow. The blades 513 extend obliquely with respect to the axial direction of the brake drum 51, and the inclination directions of the plurality of blades 513 are the same. More specifically, the line connecting the two axial ends of the fan blade 513 is inclined with respect to the axial direction of the brake drum 51.
当车辆行驶时，具有扇叶513的制动鼓51像风扇一样转动，从而制动鼓51周围的空气流动，制动产生的热量可以随着气流被快速地释放，此外，扇叶513还使得制动鼓51的散热表面积增加，有利于快速散热。应当理解，即使在不制动时，制动鼓51也起冷却作用。When the vehicle is running, the brake drum 51 with the fan blades 513 rotates like a fan, so that the air around the brake drum 51 flows, and the heat generated by braking can be quickly released with the airflow. In addition, the fan blades 513 also make The heat dissipation surface area of the brake drum 51 is increased, which facilitates rapid heat dissipation. It should be understood that even when not braking, the brake drum 51 plays a cooling role.
在图3所示的示例中，当从制动鼓51的轴向A上的另一侧观察时，制动鼓51沿顺时针方向转动，那么大致形成从制动鼓51的轴向一侧流向轴向另一侧的气流，这有利于使轮内驱动***内的热量随着气流释放到第二安装空间之外，从而降低轮内驱动***的温度。应当理解，还可以调整制动鼓51的扇叶513的倾斜方式，从而制动鼓51用于将轮内驱动***外的冷空气推入轮内驱动***，特别是推入第二安装空间。In the example shown in FIG. 3, when viewed from the other side of the brake drum 51 in the axial direction A, the brake drum 51 rotates in the clockwise direction. The air flow to the other side of the axial direction is conducive to releasing the heat in the in-wheel drive system along with the air flow out of the second installation space, thereby reducing the temperature of the in-wheel drive system. It should be understood that the inclination of the fan blades 513 of the brake drum 51 can also be adjusted, so that the brake drum 51 is used to push the cold air outside the in-wheel drive system into the in-wheel drive system, especially into the second installation space.
扇叶513的在轴向另一侧的端部可以与制动鼓51的轴向A相切，这更有利于将空气导向第二安装空间之外。The end of the fan blade 513 on the other side in the axial direction may be tangent to the axial direction A of the brake drum 51, which is more conducive to guiding the air out of the second installation space.
根据本发明的轮内驱动***还可以包括在上述具体实施方式中未进行说明的其它必要的部件。The in-wheel drive system according to the present invention may also include other necessary components that are not described in the foregoing specific embodiments.
如图1所示，太阳轮轴31与壳体11和壳体盖12之间的径向间隙设置有在轴向A上排列的两个支撑轴承72a、72b和在轴向A上排列的两个密封组件101。输出轴4具有轴部和法兰部，在法兰部与壳体11之间可以设置有密封组件102，在法兰部与太阳轮轴31之间可以设置有密封组件103。在壳体11与行星齿轮架之间的轴向间隙内设置推力滚子轴承73，以在轴向A上支撑行星齿 轮架。通过车轮轴承锁紧螺母710与轴部配合能够将车轮轴承71安装于轴部。轮内驱动***还可以包括位于第一安装空间内的传感器8，传感器8用于监测驱动电机的转速等的参数。轮内驱动***可以通过壳体盖12连接到机动车的悬架。As shown in Figure 1, the radial gap between the sun gear shaft 31 and the housing 11 and the housing cover 12 is provided with two support bearings 72a, 72b arranged in the axial direction A and two support bearings 72a and 72b arranged in the axial direction A. Seal assembly 101. The output shaft 4 has a shaft portion and a flange portion, a sealing assembly 102 may be provided between the flange portion and the housing 11, and a sealing assembly 103 may be provided between the flange portion and the sun gear shaft 31. A thrust roller bearing 73 is provided in the axial gap between the housing 11 and the planetary gear carrier to support the planetary gear carrier in the axial direction A. The wheel bearing 71 can be mounted on the shaft portion by fitting the wheel bearing lock nut 710 and the shaft portion. The in-wheel drive system may also include a sensor 8 located in the first installation space, and the sensor 8 is used to monitor parameters such as the rotational speed of the driving motor. The in-wheel drive system may be connected to the suspension of the motor vehicle through the housing cover 12.
本发明还提供具有上述轮内驱动***的机动车。The present invention also provides a motor vehicle having the above-mentioned in-wheel drive system.
当然，本发明不限于上述实施方式，本领域技术人员在本发明的教导下可以对本发明的上述实施方式做出各种变型，而不脱离本发明的范围。Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can make various modifications to the above-mentioned embodiments of the present invention under the teaching of the present invention without departing from the scope of the present invention.
(i)扇叶513还可以相对于制动鼓51的轴向A倾斜地但呈直线状地延伸，或者呈折线状地延伸，扇叶513的弯折状态只要能够导向气流即可。(i) The blade 513 may extend obliquely but linearly with respect to the axial direction A of the brake drum 51, or may extend in a broken line shape, and the blade 513 may be bent as long as it can guide the airflow.
(ii)应当理解，扇叶513可以为片状体、板状体或者条状体等。(ii) It should be understood that the fan blade 513 may be a sheet-shaped body, a plate-shaped body, or a strip-shaped body.

Claims (10)

  1. 一种轮内驱动***的制动***，包括制动鼓(51)和制动蹄(52)，所述制动鼓(51)具有筒形的工作部(511)，所述工作部(511)具有内周面和外周面，所述内周面用于与所述制动蹄(52)摩擦从而实现制动，所述制动鼓(51)在所述外周面具有向所述制动鼓(51)的径向外侧凸出的多个扇叶(513)，在所述轮内驱动***工作时，所述制动鼓(51)转动，所述扇叶(513)将所述轮内驱动***内的空气推出所述轮内驱动***或者将所述轮内驱动***外的空气推入所述轮内驱动***。A brake system of an in-wheel drive system, comprising a brake drum (51) and a brake shoe (52), the brake drum (51) has a cylindrical working part (511), the working part (511) ) Has an inner circumferential surface and an outer circumferential surface, the inner circumferential surface is used for friction with the brake shoe (52) to achieve braking, and the brake drum (51) has an outer circumferential surface that faces the brake A plurality of fan blades (513) protruding from the radially outer side of the drum (51). When the in-wheel drive system is working, the brake drum (51) rotates, and the fan blades (513) turn the wheel The air in the inner drive system pushes out the in-wheel drive system or pushes the air outside the in-wheel drive system into the in-wheel drive system.
  2. 根据权利要求1所述的轮内驱动***的制动***，其特征在于，所述扇叶(513)在所述工作部(511)的轴向上的两端之间弯曲地延伸。The braking system of the in-wheel drive system according to claim 1, wherein the fan blades (513) extend curvedly between the two ends of the working part (511) in the axial direction.
  3. 根据权利要求1所述的轮内驱动***的制动***，其特征在于，所述扇叶(513)的所述工作部(511)的轴向上的两端的连线相对于所述工作部(511)的轴向倾斜。The braking system of the in-wheel drive system according to claim 1, characterized in that the line connecting the two ends of the working part (511) of the fan blade (513) in the axial direction is relative to the working part. The (511) axis is inclined.
  4. 根据权利要求2或3所述的轮内驱动***的制动***，其特征在于，所述制动鼓(51)还包括垂直于所述制动鼓(51)的轴向大致呈环形的端部(512)，所述端部(512)在所述制动鼓(51)的轴向一侧连接于所述工作部(511)，所述端部(512)和所述工作部(511)围成容纳所述制动蹄(52)的腔室，在所述制动鼓(51)转动时，所述扇叶(513)将所述轮内驱动***内的空气推出所述轮内驱动***。The brake system of the in-wheel drive system according to claim 2 or 3, wherein the brake drum (51) further comprises a substantially annular end perpendicular to the axial direction of the brake drum (51) Part (512), the end part (512) is connected to the working part (511) on the axial side of the brake drum (51), the end part (512) and the working part (511) ) Encloses a chamber containing the brake shoe (52). When the brake drum (51) rotates, the fan blades (513) push the air in the in-wheel drive system out of the wheel Drive System.
  5. 根据权利要求2所述的轮内驱动***的制动***，其特征在于，所述扇叶(513)具有位于所述制动鼓(51)的轴向另一侧的端部，所述端部大致与所述工作部(511)的轴向相切。The brake system of the in-wheel drive system according to claim 2, wherein the fan blade (513) has an end located on the other axial side of the brake drum (51), and the end The part is substantially tangent to the axial direction of the working part (511).
  6. 一种轮内驱动***，包括驱动电机和权利要求1至5中任一项所述的制动***，所述制动鼓(51)从所述驱动电机的转子(22)接收转动驱动力。An in-wheel drive system, comprising a drive motor and the braking system according to any one of claims 1 to 5, wherein the brake drum (51) receives rotational drive force from a rotor (22) of the drive motor.
  7. 根据权利要求6所述的轮内驱动***，其特征在于，所述轮内驱动***还包括罩体，所述罩体围成安装所述制动鼓(51)的安装空间，所述罩体在所述制动鼓(51)的径向外侧具有通风窗(1231)，所述制动鼓(51)的 工作部(511)通过所述通风窗(1231)与所述安装空间的外部连通。The in-wheel drive system according to claim 6, wherein the in-wheel drive system further comprises a cover, the cover encloses an installation space for installing the brake drum (51), and the cover A ventilation window (1231) is provided on the radially outer side of the brake drum (51), and the working part (511) of the brake drum (51) communicates with the outside of the installation space through the ventilation window (1231) .
  8. 根据权利要求7所述的轮内驱动***，其特征在于，所述罩体具有位于所述制动鼓(51)的径向外侧的周向部分和位于所述制动鼓(51)的轴向一侧的径向部分，所述周向部分具有沿周向分散排布的沿所述轴向延伸的多个柱体(1232)，所述柱体(1232)在所述罩体的轴向上的两端之间延伸，在相邻的两个所述柱体(1232)之间形成所述通风窗(1231)。The in-wheel drive system according to claim 7, characterized in that the cover has a circumferential portion located on the radially outer side of the brake drum (51) and a shaft located on the brake drum (51) A radial portion toward one side, the circumferential portion has a plurality of cylinders (1232) extending along the axial direction scattered and arranged in the circumferential direction, and the cylinders (1232) are on the axis of the cover. Extending between the upward two ends, the ventilation window (1231) is formed between the two adjacent columns (1232).
  9. 根据权利要求6所述的轮内驱动***，其特征在于，The in-wheel drive system according to claim 6, wherein:
    所述轮内驱动***还包括行星齿轮减速器，所述行星齿轮减速器的太阳轮轴(31)连接于所述驱动电机的转子(22)的转子支架(6)以接收所述驱动电机的转动驱动，The in-wheel drive system also includes a planetary gear reducer, the sun gear shaft (31) of the planetary gear reducer is connected to the rotor support (6) of the rotor (22) of the drive motor to receive the rotation of the drive motor drive,
    所述制动鼓(51)具有垂直于所述制动鼓(51)的轴向的大致呈环形的端部(512)，所述端部(512)连接于所述工作部(511)的轴向一端，所述端部(512)和所述工作部(511)围成容纳所述制动蹄(52)的腔室，The brake drum (51) has a substantially annular end (512) perpendicular to the axial direction of the brake drum (51), and the end (512) is connected to the working part (511). At one axial end, the end (512) and the working part (511) enclose a cavity for accommodating the brake shoe (52),
    所述太阳轮轴(31)的轴向另一端连接于所述端部(512)的轴向一侧的连接部(514)的齿形结构(5140)以传递所述转动驱动。The other axial end of the sun gear shaft (31) is connected to the toothed structure (5140) of the connecting portion (514) on the axial side of the end (512) to transmit the rotational drive.
  10. 一种机动车，包括权利要求1至5中任一项所述的制动***或权利要求6至9中任一项所述的轮内驱动***。A motor vehicle comprising the braking system according to any one of claims 1 to 5 or the in-wheel drive system according to any one of claims 6 to 9.
PCT/CN2019/077940 2019-03-13 2019-03-13 Braking system of in-wheel drive system, in-wheel drive system and motor vehicle WO2020181516A1 (en)

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PCT/CN2019/077940 WO2020181516A1 (en) 2019-03-13 2019-03-13 Braking system of in-wheel drive system, in-wheel drive system and motor vehicle

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PCT/CN2019/077940 WO2020181516A1 (en) 2019-03-13 2019-03-13 Braking system of in-wheel drive system, in-wheel drive system and motor vehicle

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4830150A (en) * 1986-02-27 1989-05-16 Lynn Denton Brake drum cooling, drying and cleaning fins
KR20100039727A (en) * 2008-10-08 2010-04-16 주식회사 신화통상 The tire wheel for automobile
CN101852259A (en) * 2010-06-17 2010-10-06 王世新 Drum brake
CN103362996A (en) * 2012-04-09 2013-10-23 十堰龙腾达工业有限公司 Automobile drum type brake heat dissipation system
US20140345994A1 (en) * 2013-05-21 2014-11-27 Arvinmeritor Technology, Llc Axle Assembly Having a Steering Knuckle
CN105065520A (en) * 2015-07-28 2015-11-18 华南理工大学 Drum brake cooled through heat pipes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4830150A (en) * 1986-02-27 1989-05-16 Lynn Denton Brake drum cooling, drying and cleaning fins
KR20100039727A (en) * 2008-10-08 2010-04-16 주식회사 신화통상 The tire wheel for automobile
CN101852259A (en) * 2010-06-17 2010-10-06 王世新 Drum brake
CN103362996A (en) * 2012-04-09 2013-10-23 十堰龙腾达工业有限公司 Automobile drum type brake heat dissipation system
US20140345994A1 (en) * 2013-05-21 2014-11-27 Arvinmeritor Technology, Llc Axle Assembly Having a Steering Knuckle
CN105065520A (en) * 2015-07-28 2015-11-18 华南理工大学 Drum brake cooled through heat pipes

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