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WO2018192454A1 - 一种汽车助力转向传感器 - Google Patents

一种汽车助力转向传感器 Download PDF

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Publication number
WO2018192454A1
WO2018192454A1 PCT/CN2018/083239 CN2018083239W WO2018192454A1 WO 2018192454 A1 WO2018192454 A1 WO 2018192454A1 CN 2018083239 W CN2018083239 W CN 2018083239W WO 2018192454 A1 WO2018192454 A1 WO 2018192454A1
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WO
WIPO (PCT)
Prior art keywords
upper casing
power steering
input shaft
casing
shaft rotor
Prior art date
Application number
PCT/CN2018/083239
Other languages
English (en)
French (fr)
Inventor
黄志高
霍佩·史蒂芬
刘震宇
邸剑涛
朱卫
张全慧
Original Assignee
上海海拉电子有限公司
海拉胡克双合有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海海拉电子有限公司, 海拉胡克双合有限公司 filed Critical 上海海拉电子有限公司
Priority to EP18787669.3A priority Critical patent/EP3613649B1/en
Publication of WO2018192454A1 publication Critical patent/WO2018192454A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D15/00—Steering not otherwise provided for
    • B62D15/02—Steering position indicators ; Steering position determination; Steering aids
    • B62D15/021—Determination of steering angle
    • B62D15/0215—Determination of steering angle by measuring on the steering column
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
    • B62D6/08—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque
    • B62D6/10—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque characterised by means for sensing or determining torque
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/22—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
    • G01L5/221—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers to steering wheels, e.g. for power assisted steering

Definitions

  • the invention relates to the field of automobile parts, and in particular to an automobile power steering sensor.
  • the car power steering is to increase the external force to resist the steering resistance, so that the driver can complete the steering with less force, also called power steering, which makes driving easier and more relaxed, and makes the vehicle more agile and certain.
  • the degree of security has been increased to a greater extent.
  • the vehicle power steering sensor detects the magnitude and direction of the torque or the angle of the steering wheel generated by the driver during the steering operation, and converts the required information into a digital signal input control unit, and then the control unit calculates the signals to obtain a driving relationship.
  • the torque corresponding to the working condition is finally commanded to drive the motor to work, and the output torque of the motor is assisted by the action of the transmission device. Therefore, the sensor is one of the most important devices in the automotive power steering system.
  • the input shaft rotor In the prior art of automotive power steering sensors, the input shaft rotor needs to be positioned in the radial direction and matched to its installation. When the input shaft rotor rotates, it will rub against the upper casing, causing wear on the input shaft rotor. Therefore, a circular wire spring is additionally embedded in the rotor, so that there is always a force for outward bucking, which can compensate for the gap caused by the wear of the input shaft rotor. In the axial direction, the input shaft rotor is welded to the gear such that the upper housing is relatively fixed axially.
  • the PCB assembly is fixedly connected to the upper casing, the PCB board is clamped between the lower casing and the input shaft rotor, and the upper casing and the lower casing are connected by laser welding, and the process is complicated.
  • the rotor is produced by encapsulation and is connected to the input shaft by laser welding, which often leads to inaccurate positioning or complicated process in fixing and moving.
  • the present invention is directed to an automotive power steering sensor that changes the housing configuration to integrate the structural features of the sliding bearing, thereby changing the assembly relationship between the sensor housing and the input shaft and the output shaft rotor, simplifying the sensor itself.
  • the installation process ensures that the PCB remains stable under ambient temperature changes and in the presence of wear, and the sensor is always concentric with the input shaft.
  • the present invention provides an automotive power steering sensor including an upper casing, a lower casing, an input shaft rotor, a PCB assembly, and an output shaft rotor, wherein the input shaft rotor is mounted on an input shaft of the automobile power steering device Up and sleeved on the upper portion of the upper casing, the PCB assembly is mounted on a lower portion of the upper casing, and the upper casing is fastened to the lower casing to fix the PCB assembly to In the space formed by the upper casing and the lower casing, the upper casing is sleeved on an input shaft of the automobile power steering device, and the output shaft rotor is mounted on an output shaft of the automobile power steering device, and the automobile
  • the input shaft rotor rotates coaxially with the input shaft at a same speed
  • the output shaft rotor rotates coaxially with the output shaft at a same speed
  • the upper housing remains with the input shaft rotor Concentric coaxial.
  • the inside of the upper casing is provided with a mounting portion, and the mounting portion is integrated with a sliding bearing structure, the sliding bearing structure is annular, and is disposed at a middle portion of the upper casing, the input shaft The rotor is sleeved on the sliding bearing of the upper casing, and the input shaft rotor is coaxially disposed coaxially with the upper casing.
  • the sliding bearing includes at least one support portion and at least one elastic portion, the support portion being spaced apart from the elastic portion.
  • the sliding bearing comprises three sets of the support portion and the elastic portion, wherein the support portion and the elastic portion are each identical, and two centers of the support portion and the elastic portion are respectively obtained to obtain two An equilateral triangle with coincident centers.
  • the support portion includes first and second faces parallel to each other, and the end of the first face is provided with a boss, and the boss faces away from the axis in a radial direction of the upper case a direction protruding from the boss, a protrusion is disposed in a direction parallel to an axial direction of the upper casing, and the second surface is connected to the boss, and the first surface is higher than the Said the second side.
  • the elastic portion is a trapezoidal structure, and a groove is disposed between the elastic portion and the support portion, and the free end of the elastic portion faces the upper casing in a radial direction of the upper casing
  • the shaft center is provided with a projection, and the projection is provided with a hollow groove toward the surface of the upper casing, and the elastic portion is also provided with a hollow structure inside.
  • the groove provided between the elastic portion and the support portion is a U-shaped groove.
  • the mounting portion of the upper casing extends downward through the upper casing, and the PCB assembly is looped over the lower end of the upper casing mounting portion.
  • the outer edge of the lower casing extends upward corresponding to the structural feature of the upper casing, and after installation, the outer wall of the lower casing encloses the structure on the upper casing.
  • the upper housing and the lower housing are fastened in a snap-fit manner.
  • the upper casing is provided with a hook structure
  • the lower casing is correspondingly provided with a card slot structure.
  • the hook structure of the upper casing is engaged with the card slot structure of the lower casing, A fastening connection of the upper housing to the lower housing is achieved.
  • the sliding bearing structure integrated in the upper casing makes the casing always maintain a slight interference fit with the input shaft, and can also compensate for the gap caused by the wear by the deformation of its own structure.
  • FIG. 1 is a structural view of a vehicle power steering sensor in accordance with a preferred embodiment of the present invention
  • FIG. 2 is a cross-sectional view of a vehicle power steering sensor in accordance with a preferred embodiment of the present invention
  • FIG 3 is a structural view of an upper casing of an automotive power assist sensor in accordance with a preferred embodiment of the present invention.
  • 2-upper housing 20-sliding bearing, 200-sliding bearing structure, 201-support, 202-elastic,
  • the automotive power steering sensor provided in this embodiment includes an upper casing 2, a lower casing 4, an input shaft rotor 1, a PCB assembly 3, and an output shaft rotor 5.
  • the input shaft rotor 1 is mounted on the input shaft 6 of the automobile power steering device, and is sleeved on the upper portion of the upper casing 2;
  • the assembly 3 is mounted on a lower portion of the upper casing 2, and the upper casing 2 is fastened to the lower casing 4 to fix the PCB assembly 3 to the upper casing 2 and the lower casing
  • the upper casing 2 is sleeved on the input shaft 6 of the automobile power steering device, and the output shaft rotor 5 is mounted on the output shaft 7 of the automobile power steering device.
  • the input shaft rotor 1 rotates coaxially with the input shaft 6 at the same speed
  • the output shaft rotor 5 rotates coaxially with the output shaft 7 at the same speed
  • the upper housing 2 remains Concentric with the input shaft rotor 1 coaxially.
  • the present embodiment realizes that the input shaft rotor 1 is independent of the entire housing and simplifies the structure of the input shaft rotor, thereby eliminating the need to simultaneously ensure the axial positioning of the upper housing.
  • the gear parts are mated and there is no need to add a wire round spring to compensate for the gap between the radial and upper casings without friction and wear when the input shaft rotor rotates.
  • FIG. 3 there is shown a structural view of an upper casing of a vehicle power steering sensor according to a preferred embodiment of the present invention.
  • the present embodiment is in the upper casing 2.
  • the mounting portion 20 is disposed inside, and a sliding bearing structure 200 is integrated in the upper portion of the mounting portion 20, and the sliding bearing structure 200 is annular and disposed in the middle of the upper casing 2.
  • FIG. 2 it can be seen that when the automobile power steering sensor is assembled, first, the upper casing 2 is sleeved on the input shaft 6 of the automobile power steering device, and the input shaft rotor 1 is first inserted into the input shaft 6 of the automobile power steering device. Then, it is sleeved on the sliding bearing 200 of the upper casing 2, so that when the automobile power steering device is in operation, the upper casing 2 can always maintain a coaxial concentric state on the input shaft 1.
  • the sliding bearing structure 200 integrated on the upper casing 2 of the present embodiment includes a support portion 201 and an elastic portion 202, wherein the support portion 201 and the elastic portion 202 are spaced apart from each other, that is, each The elastic portions 202 are each disposed between the two support portions 201 , and each of the support portions 201 is also disposed between the two elastic portions 202 .
  • the support portion 201 can provide a supporting force to the elastic portion 202, thereby preventing the elastic portion 202 from being damaged by external stress to a certain extent.
  • the support portion 201 provided in this embodiment includes two first faces 203 and a second face 204 which are parallel to each other, wherein the end of the first face 203 is provided with a boss.
  • the boss protrudes from the first face 203 in a radial direction of the upper casing 2 in a direction away from the axis, and in the direction parallel to the axial direction of the upper casing 2 on the boss A stud is disposed, wherein the second face 204 is coupled to the boss, and the first face 203 is higher than the second face 204.
  • the stud when the input shaft rotor 2 is inserted into the sliding bearing structure 200, the stud is in direct contact with the input shaft rotor 2, thereby preventing the input shaft rotor 1 from rotating and causing frictional damage to the upper casing 2 when the power steering device is operated;
  • the input shaft rotor 1 is coupled with the sliding bearing structure 200. Therefore, the second surface 204 is disposed to connect two adjacent bosses, thereby providing support force to the entire sliding bearing structure 200, thereby effectively preventing the input shaft.
  • the stress generated by the rotor 1 in cooperation with the sliding bearing structure 200 is damaged by the sliding bearing structure.
  • the elastic portion 201 of the sliding bearing structure 200 has a trapezoidal structure.
  • a groove is further provided between the elastic portion 202 and the support portion 201.
  • a projection is provided on the free end of the elastic portion 202, a projection is provided in the radial direction of the upper casing 2 and in the axial direction of the upper casing 2, and the projection is provided on the surface of the upper casing 2
  • the hollow groove is also provided with a hollow structure inside the elastic portion 202.
  • the convex structure of the elastic portion 202 can make the upper casing 2 slightly interference fit with the input shaft 6, and when the automobile power steering device is in operation, the groove and the hollow groove and the internal hollow structure
  • the matching arrangement makes the elastic portion 202 have a certain resilience similar to that of the spring piece, so that the upper casing 2 can compensate for the problem of the tight fit caused by the wear of the input shaft rotor 1 and the upper casing 2 by self-deformation.
  • the input shaft rotor 1 and the upper casing 2 are always kept in a coaxial concentric state.
  • the sliding bearing structure 200 of the present embodiment includes three sets of the support portion 201 and the elastic portion 202, wherein the support portion 201 and the elastic portion 202 are each identical. And connecting the center of the support portion 201 and the elastic portion 202 respectively can obtain two equilateral triangles whose centers coincide.
  • the above design can make the sliding bearing structure 200 more stable overall, strengthen the bearing capacity of the upper casing 2 to the stress generated during the assembly and operation of the automobile power steering sensor, and effectively reduce the damage rate of the upper casing 2.
  • the groove provided between the elastic portion 202 and the support portion 201 is a U-shaped groove, which enhances the pressure bearing capability of the elastic portion.
  • the mounting portion 20 of the upper casing 2 extends downwardly through the upper casing 2, and the PCB assembly 3 is looped over the lower end of the mounting portion of the upper casing 2, thereby maintaining the PCB assembly 3 at all times. It is disposed concentrically with the upper casing 2 coaxially.
  • the outer edge of the lower casing 4 extends upward corresponding to the structural features of the upper casing 2.
  • the outer wall of the lower casing 4 wraps the structure on the upper casing 2, and the design also protects the upper casing.
  • the structure on the body 2 is free from external forces or other damage generated during installation and power steering.
  • a hook structure is disposed on the upper casing 2, and a card slot structure is correspondingly disposed on the lower casing 4, and the hook structure of the upper casing 2 is inserted into the card of the lower casing 4 during installation.
  • the upper casing 2 and the lower casing 4 are fastened by a snap fit.
  • the present invention simplifies the input shaft rotor structure, improves the accuracy, and is independent of the entire casing, thereby ensuring the concentricity of the input shaft rotor and the input shaft; meanwhile, due to the rotation of the input shaft rotor, the radial direction There is no friction and wear with the upper casing, so there is no need to additionally add a wire round spring to compensate for the resulting gap; in the axial direction of the sensor, since the input shaft rotor is directly pressed against the upper casing, the upper casing can also be secured.
  • the axial positioning eliminates the need to cooperate with the gear parts; and the sliding bearing structure integrated in the upper housing keeps the housing always slightly interference fit with the input shaft, and can also compensate for the wear after deformation of its own structure. The gap is brought about.
  • the present invention overcomes the complicated installation process of the upper and lower casings in the prior art by adopting a snap connection, and facilitates post-disassembly maintenance and the like.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Steering Mechanism (AREA)
  • Steering Controls (AREA)

Abstract

一种汽车助力转向传感器，包括上壳体（2）、下壳体（4）、输入轴转子（1）、PCB总成（3）及输出轴转子（5），其中，输入轴转子（1）安装于汽车助力转向装置的输入轴（6）上，并套设于上壳体（2）上部，PCB总成（3）安装于上壳体（2）下部，上壳体（2）与下壳体（4）紧固连接，将PCB总成（3）固定于上壳体（2）与下壳体（4）形成的空间中，上壳体（2）套设于汽车助力转向装置的输入轴（6）上，输出轴转子（5）安装于汽车助力转向装置的输出轴（7）上，汽车助力转向装置运行时，输入轴转子（1）与输入轴（6）同轴同速转动，输出轴转子（5）与输出轴（7）同轴同速转动，从而，上壳体（2）保持与输入轴转子（1）同心同轴。所述汽车助力转向传感器通过改善上壳体（2）及输入轴转子（1）的结构，简化了传感器自身的安装工艺，提高了传感器的稳固性，具有优异的市场前景。

Description

一种汽车助力转向传感器 技术领域
本发明涉及汽车零部件领域，尤其涉及一种汽车助力转向传感器。
背景技术
汽车助力转向，就是通过增加外力来抵抗转向阻力，让驾驶者只需更少的力就能够完成转向，也称动力转向，它让驾驶变得更加简单和轻松，并且让车辆反应更加敏捷，一定程度上提高了安全性，从而得到广泛的重视。汽车助力转向传感器，通过探测司机在转向操作时方向盘产生的扭矩或转角的大小和方向，并将所需信息转化成数字信号输入控制单元，再由控制单元对这些信号进行运算后得到一个与行驶工况相适应的力矩，最后发出指令驱动电动机工作，电动机的输出转矩通过传动装置的作用而助力。因此传感器是汽车助力转向系统中最重要的器件之一。
在汽车助力转向传感器的现有技术中，输入轴转子径向上需要依赖上壳体定位，并与其安装相配。而输入轴转子旋转时，会与上壳体发生摩擦，导致输入轴转子产生磨损。所以转子内需另外嵌入圆形钢丝弹簧，使得始终有向外撑的作用力，可以弥补输入轴转子磨损带来的间隙。在轴向上，输入轴转子与齿轮焊接，使得上壳体轴向上相对固定。PCB总成与上壳体固定连接，PCB板夹持于下壳体及输入轴转子之间的技术方案，且其上壳体与下壳体采用激光焊接连接，工艺复杂。另外，转子采用包胶注塑生产，并采用激光焊接的方式与输入轴连接，往往导致固定和运动中定位不精确或者工艺复杂的问题。
发明内容
本发明旨在提出一种汽车助力转向传感器，其改变了壳体构造，使其集成了滑动轴承的结构特征，从而改变了传感器壳体与输入轴、输出轴转子的装配关系，简化了传感器自身的安装工艺，同时保证在环境温度变化情况下以及存在磨损情况下，PCB板可以保持稳固，且传感器始终与输入轴保持同心状态。
具体地，本发明提供一种汽车助力转向传感器，包括上壳体、下壳体、输入轴转子、PCB总成及输出轴转子，其中，所述输入轴转子安装于汽车助力转向装置的输入轴上，并套设于所述上壳体上部，所述PCB总成安装于所述上壳体下部，所述上壳体与所述下壳体紧固连接，将所述PCB总成固定于所述上壳体与所述下壳体形成的空间中，所述上壳体套设于汽车助力转向装置的输入轴上，所述输出轴转子安装于汽车助力转向装置的输出轴上，汽车助力转向装置运行时，所述输入轴转子与所述输入轴同轴同速转动，所述输出轴转子与所述输出轴同轴同速转动，所述上壳体保持与所述输入轴转子同心同轴。
优选地，所述上壳体的内部设置有安装部，所述安装部上集成有滑动轴承结构，所述滑动轴承结构为圆环形，设置于所述上壳体的中部，所述输入轴转子套设于所述上壳体的所述滑动轴承上，所述输入轴转子与所述上壳体同心同轴设置。
优选地，所述滑动轴承包括至少一个支撑部和至少一个弹性部，所述支撑部与所述弹性部间隔设置。
优选地，所述滑动轴承包括3组所述支撑部及所述弹性部，其中，所述支撑部和所述弹性部各自完全相同，且分别连接所述支撑部和弹性部的中心可得到两个中心重合的等边三角形。
优选地，所述支撑部包含相互平行的第一面和第二面，所述第一面的端部设置有凸台，所述凸台沿所述上壳体的径向方向朝远离轴心的方向凸出， 所述凸台上沿与所述上壳体的轴向平行的方向上设置有凸柱，所述第二面与所述凸台相连接，所述第一面高于所述第二面。
优选地，所述弹性部为梯形结构，所述弹性部与所述支撑部之间设置有凹槽，所述弹性部自由端上，沿所述上壳体径向方向朝向所述上壳体的轴心设置有凸起，所述凸起朝向所述上壳体的面上设置有镂空槽，所述弹性部内部也设置有镂空结构。
优选地，所述弹性部与所述支撑部之间设置的凹槽为U型槽。
优选地，所述上壳体的安装部贯穿所述上壳体向下延伸，所述PCB总成环套于所述上壳体安装部的下端。
优选地，所述下壳体外边缘对应所述上壳体的结构特征向上延伸，安装后，所述下壳体外壁包裹所述上壳体上的结构。
优选地，所述上壳体与所述下壳体通过卡扣方式紧固连接。
优选地，所述上壳体上设置卡勾结构，所述下壳体上对应设置卡槽结构，安装时，上壳体的所述卡勾结构卡入下壳体的所述卡槽结构，实现所述上壳体与所述下壳体的紧固连接。
与现有技术相比较，本发明的技术优势在于：
1)通过将输入轴转子结构简化，精度提高，并独立于整个壳体之外，保证了输入轴转子与输入轴的同心度；
2)由于输入轴转子旋转时，径向与上壳体没有摩擦和磨损，所以无需另外添加钢丝圆形弹簧来补偿因此带来的间隙；
3)传感器轴向上，由于输入轴转子直接压在上壳体上，同样能保证上壳体的轴向定位，所以不再需要与齿轮零件配合；
4)集成于上壳体的滑动轴承结构，使壳体始终与输入轴保持轻微过盈配合，也能通过自身结构的形变来弥补磨损后带来的间隙。
5)通过采用卡扣连接的方式，克服了现有技术中上下壳体安装工艺复杂的问题，且便于后期拆卸维修等。
附图说明
图1为一符合本发明一优选实施例的汽车助力转向传感器的结构图；
图2为一符合本发明一优选实施例的汽车助力转向传感器的剖面图；
图3为一符合本发明一优选实施例的汽车助力传感器的上壳体的结构图。
附图标记：
1-输入轴转子，
2-上壳体，20-滑动轴承，200-滑动轴承结构，201-支撑部，202-弹性部，
3-PCB总成，
4-下壳体，
5-输出轴转子，
6-输入轴，
7-输出轴
具体实施方式
以下结合附图及具体实施例，详细阐述本发明的技术优势。
参阅图1，其为一符合本发明一优选实施例的汽车助力转向传感器的结构图。从图中可以看出，本实施例所提供的汽车助力转向传感器，包括上壳体2、下壳体4、输入轴转子1、PCB总成3及输出轴转子5。
进一步参阅图2，可以看出，在本实施例装配时，所述输入轴转子1安装于汽车助力转向装置的输入轴6上，并套设于所述上壳体2上部；而所述PCB总成3安装于所述上壳体2下部，所述上壳体2与所述下壳体4紧固连接，将所述PCB总成3固定于所述上壳体2与所述下壳体4形成的空间中，所述上壳体2套设于汽车助力转向装置的输入轴6上，所述输出轴转子5安装于汽车助力转向装置的输出轴7上。汽车助力转向装置运行时，所述输入轴转子1与所述输入轴6同轴同速转动，所述输出轴转子5与所述输出轴7 同轴同速转动，所述上壳体2保持与所述输入轴转子1同心同轴。鉴于上述设置，本实施例实现将输入轴转子1独立于整个壳体之外，并简化了输入轴转子的结构，从而，在同样保证上壳体的轴向定位的情况下，不再需要与齿轮零件配合，且无需另外添加钢丝圆形弹簧来补偿输入轴转子旋转时，径向与上壳体没有摩擦和磨损带来的间隙。
同时，参阅图3，其显示了一符合本发明的一优选实施例的汽车助力转向传感器的上壳体的结构图，从图中可以看出，优选地，本实施例在上壳体2的内部设置有安装部20，在所述安装部20的上部集成了滑动轴承结构200，该滑动轴承结构200为圆环形，设置于上壳体2的中部。参阅图2，可见，在汽车助力转向传感器装配时，首先上壳体2套设于汽车助力转向装置的输入轴6上，输入轴转子1也先套入于汽车助力转向装置的输入轴6，然后套设于上壳体2的滑动轴承200上，从而在汽车助力转向装置运行时，上壳体2于输入轴1可以始终保持同轴同心状态。
进一步参与图3，可以看出，本实施例的上壳体2上集成的滑动轴承结构200包括支撑部201和弹性部202，其中所述支撑部201与弹性部202相互间隔设置，即每个弹性部202均设置于两个支撑部201之间，而每个支撑部201也均设置于两个弹性部202之间。鉴于上述设置，当弹性部202收到外界应力的作用时，支撑部201可以向弹性部202提供支撑力，从而，在一定程度上防止弹性部202会受外部应力作用而损坏。
进一步参阅图3，可见，本实施例中所设置的支撑部201包括两个相互平行的弧形面第一面203及第二面204，其中，第一面203的端部位置设置有凸台，该凸台由第一面203，沿着上壳体2的径向方向，朝远离轴心的方向凸出，而在该凸台上沿与上壳体2的轴向相平行的方向上，设置有凸柱，其中第二面204与凸台相连接，且，第一面203高于第二面204。鉴于上述设置，当输入轴转子2套入滑动轴承结构200时，凸柱与输入轴转子2直接接触，从而避免助力转向装置运行时，输入轴转子1转动而对上壳体2产生 摩擦损坏；同时，本实施例中，输入轴转子1与滑动轴承结构200配合安装，所以，设置第二面204连接两个相邻的凸台，可向整个滑动轴承结构200提供支持力，有效防止输入轴转子1与滑动轴承结构200配合安装时所产生的应力对滑动轴承结构的损坏。
另外，优选地，参阅图3，本实施例中，滑动轴承结构200的弹性部201为梯形结构。其中，在弹性部202与支撑部201之间还设置有凹槽。而，弹性部202的自由端上，沿上壳体2径向方向并朝向上壳体2的轴心方向上设置有凸起，在该凸起朝向所述上壳体2的面上设置有镂空槽，同时，在弹性部202的内部也设置有镂空结构。本实施例采用上述设置的原因在于，弹性部202的凸起结构可使上壳体2与输入轴6轻微过盈配合，而在汽车助力转向装置运行时，凹槽及镂空槽和内部镂空结构的配合设置，又使得弹性部202类似于弹簧片具有一定的回弹力，从而，上壳体2可通过自身形变来弥补输入轴转子1与上壳体2相互磨损后导致的配合不紧密问题，使得输入轴转子1与上壳体2始终保持同轴同心状态。
优选地，如图3所述，本实施例的滑动轴承结构200中包括3组所述支撑部201及所述弹性部202，其中，所述支撑部201和所述弹性部202各自完全相同，且分别连接所述支撑部201和弹性部202的中心可得到两个中心重合的等边三角形。上述设计可使得滑动轴承结构200整体上更加稳固，加强上壳体2对汽车助力转向传感器装配及运行过程中产生的应力的承受能力，有效减少上壳体2的损坏率。
参阅图3，更加优选地，弹性部202与支撑部201之间设置的凹槽为U型槽，该设置增强了弹性部的承压能力。
进一步优选地，参阅图2，上壳体2的安装部20贯穿上壳体2向下延伸，PCB总成3环套于上壳体2安装部的下端，从而，可保持PCB总成3始终与上壳体2同轴同心设置。
进一步优选地，参阅图1，，下壳体4外边缘对应上壳体2的结构特征向 上延伸，安装后，下壳体4外壁包裹上壳体2上的结构，该设计也可保护上壳体2上的结构免于安装及助力转向装置运行中产生的外力或其他的损坏现象。
更加优选地，本实施例中，在上壳体2上设置卡勾结构，在下壳体4上对应设置卡槽结构，安装时，上壳体2的卡勾结构卡入下壳体4的卡槽结构，上壳体2与下壳体4通过卡扣方式紧固连接。该设计克服了现有技术中上下壳体安装工艺复杂的问题，同时便于后期拆卸维修等。
综上所述，本发明通过将输入轴转子结构简化，精度提高，并独立于整个壳体之外，保证了输入轴转子与输入轴的同心度；同时，由于输入轴转子旋转时，径向与上壳体没有摩擦和磨损，所以无需另外添加钢丝圆形弹簧来补偿因此带来的间隙；而在传感器轴向上，由于输入轴转子直接压在上壳体上，同样能保证上壳体的轴向定位，所以不再需要与齿轮零件配合；并且，集成于上壳体的滑动轴承结构，使壳体始终与输入轴保持轻微过盈配合，也能通过自身结构的形变来弥补磨损后带来的间隙；最后，本发明通过采用卡扣连接的方式，克服了现有技术中上下壳体安装工艺复杂的问题，且便于后期拆卸维修等。
应当注意的是，本发明的实施例有较佳的实施性，且并非对本发明作任何形式的限制，任何熟悉该领域的技术人员可能利用上述揭示的技术内容变更或修饰为等同的有效实施例，但凡未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何修改或等同变化及修饰，均仍属于本发明技术方案的范围内。

Claims (11)

  1. 一种汽车助力转向传感器，包括上壳体、下壳体、输入轴转子、PCB总成及输出轴转子，其特征在于，
    所述输入轴转子安装于汽车助力转向装置的输入轴上，并套设于所述上壳体上部，
    所述PCB总成安装于所述上壳体下部，
    所述上壳体与所述下壳体紧固连接，将所述PCB总成固定于所述上壳体与所述下壳体形成的空间中，
    所述上壳体套设于汽车助力转向装置的输入轴上，
    所述输出轴转子安装于汽车助力转向装置的输出轴上，
    汽车助力转向装置运行时，所述输入轴转子与所述输入轴同轴同速转动，所述输出轴转子与所述输出轴同轴同速转动，所述上壳体保持与所述输入轴转子同心同轴。
  2. 如权利要求1所述的汽车助力转向传感器，其特征在于，
    所述上壳体的内部设置有安装部，所述安装部上集成有滑动轴承结构，
    所述滑动轴承结构为圆环形，设置于所述上壳体的中部，所述输入轴转子套设于所述上壳体的所述滑动轴承上，所述输入轴转子与所述上壳体同心同轴设置。
  3. 如权利要求2所述的汽车助力转向传感器，其特征在于，
    所述滑动轴承包括至少一个支撑部和至少一个弹性部，所述支撑部与所述弹性部间隔设置。
  4. 如权利要求3所述的汽车助力转向传感器，其特征在于，
    所述滑动轴承包括3组所述支撑部及所述弹性部，其中，所述支撑部和所述弹性部各自完全相同，且分别连接所述支撑部和弹性部的中心可得 到两个中心重合的等边三角形。
  5. 如权要求3所述的汽车助力转向传感器，其特征在于，
    所述支撑部包含相互平行的第一面和第二面，
    所述第一面的端部设置有凸台，所述凸台沿所述上壳体的径向方向朝远离轴心的方向凸出，
    所述凸台上沿与所述上壳体的轴向平行的方向上设置有凸柱，
    所述第二面与所述凸台相连接，
    所述第一面高于所述第二面。
  6. 如权利要求3所述的汽车助力转向传感器，其特征在于，
    所述弹性部为梯形结构，
    所述弹性部与所述支撑部之间设置有凹槽，
    所述弹性部自由端上，沿所述上壳体径向方向朝向所述上壳体的轴心设置有凸起，
    所述凸起朝向所述上壳体的面上设置有镂空槽，
    所述弹性部内部也设置有镂空结构。
  7. 如权利要求6所述的汽车助力转向传感器，其特征在于，
    所述弹性部与所述支撑部之间设置的凹槽为U型槽。
  8. 如权利要求1所述的汽车助力转向传感器，其特征在于，
    所述上壳体的安装部贯穿所述上壳体向下延伸，所述PCB总成环套于所述上壳体安装部的下端。
  9. 如权利要求1所述的汽车助理转向传感器，其特征在于，
    所述下壳体外边缘对应所述上壳体的结构特征向上延伸，安装后，所述下壳体外壁包裹所述上壳体上的结构。
  10. 如权利要求1所述的汽车助力转向传感器，其特征在于，
    所述上壳体与所述下壳体通过卡扣方式紧固连接。
  11. 如权利要求10所述的汽车助力转向传感器，其特征在于， 所述上壳体上设置卡勾结构，所述下壳体上对应设置卡槽结构，安装时，上壳体的所述卡勾结构卡入下壳体的所述卡槽结构，实现所述上壳体与所述下壳体的紧固连接。
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