WO2015101219A1 - 轮速传感装置及其感应单元及使用该轮速传感装置的车辆 - Google Patents

轮速传感装置及其感应单元及使用该轮速传感装置的车辆 Download PDF

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Publication number
WO2015101219A1
WO2015101219A1 PCT/CN2014/095104 CN2014095104W WO2015101219A1 WO 2015101219 A1 WO2015101219 A1 WO 2015101219A1 CN 2014095104 W CN2014095104 W CN 2014095104W WO 2015101219 A1 WO2015101219 A1 WO 2015101219A1
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WIPO (PCT)
Prior art keywords
wheel speed
hub
sensing device
wheel
unit
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PCT/CN2014/095104
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English (en)
French (fr)
Inventor
杨鑫
杨超
张喆
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博世汽车部件(苏州)有限公司
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Application filed by 博世汽车部件(苏州)有限公司 filed Critical 博世汽车部件(苏州)有限公司
Priority to KR2020167000041U priority Critical patent/KR20160003491U/ko
Publication of WO2015101219A1 publication Critical patent/WO2015101219A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/443—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings

Definitions

  • the present application relates to a wheel speed sensing device and its sensing unit and a vehicle using the wheel speed sensing device.
  • the wheel speed sensor in the anti-lock device is used to detect the speed of the wheel in real time, and transmits the detected signal to the electronic control unit of the anti-lock device, and the electronic control unit logically judges and analyzes these signals and calculates it. Once the wheel is identified as having a tendency to lock, the braking force on the wheel is reduced in time to prevent the wheel from locking, ensuring good driving stability during braking and avoiding traffic accidents.
  • the installation method of the wheel speed sensor directly affects the accuracy of the wheel speed sensor detection signal.
  • the wheel speed sensor in order to mount the wheel speed sensor to an electric riding vehicle, the wheel speed sensor is first mounted on a bracket, and then the bracket is mounted. Mounted to the hub of the vehicle's wheels. Therefore, when installing the wheel speed sensor, an additional bracket connection process is required, which complicates the installation process, has a long production cycle, and has high production cost.
  • the purpose of the present application is to overcome the deficiencies of the prior art, and provide a wheel speed sensing device and an induction unit thereof, and a vehicle using the wheel speed sensing device, which are simple in structure and convenient to install.
  • the present application provides, in one aspect, a sensing unit of a wheel speed sensing device mounted on a wheel of a vehicle for detecting a wheel speed of a vehicle in real time, the wheel including a hub and a screw penetrating the hub.
  • the sensing unit of the wheel speed sensing device includes: a fixing member fixed on the screw of the wheel; and an sensing circuit board on which an inductive member is disposed, the sensing circuit board being fixed on the fixing member
  • the sensing circuit board extends in a direction substantially perpendicular to a central axis of the hub.
  • the fixing member includes a body portion and a receiving portion, the receiving portion extending from the body portion and along a central axis substantially perpendicular to the hub The direction extends to receive the sensing circuit board.
  • the sensing circuit board is fixed in the receiving portion by clamping, fixing, screwing or other suitable manner.
  • the fixing member includes a tube portion for fixing the sensing unit of the wheel speed sensing device to the screw, the tube portion running through The body portion is formed integrally with the body portion.
  • the fixing member includes a tube portion for fixing the sensing unit of the wheel speed sensing device to the screw, the tube portion is A sleeve formed separately, the body portion being provided with a coupling tube that cooperates with the sleeve.
  • the sleeve includes a joint end and a boss end, the joint end is interference-fitted with the joint tube, and the boss end is used to resist the Combine the end of the tube.
  • the tube portion is made of the same or different material as the body portion.
  • the sleeve is tightly fitted over the screw by an interference fit.
  • the present application in another aspect thereof, provides a wheel speed sensing device mounted on a wheel of a vehicle for detecting a wheel speed of a vehicle in real time, the wheel including a hub and a screw penetrating the hub, the wheel speed sensing device
  • the method includes: a magnetic field generating unit fixed to the hub and rotating with the hub, the magnetic field generating unit including a magnetic field generating member, the magnetic field generating member extending in a direction substantially perpendicular to a central axis of the hub; and the wheel speed transmission described above Sensing unit of the sensing device.
  • the magnetic field generating unit includes a surrounding portion fixed to the hub and a bearing portion extending from the surrounding portion toward the hub axis, the magnetic field generating member being disposed on the carrying portion .
  • the magnetic field generating member is sheathed by the body portion of the sensing unit and opposite to the sensing circuit board fixed to the body portion for The sensing circuit board rotates and is detected by the sensing component.
  • the present application in another aspect thereof, provides a vehicle comprising: a wheel, including a hub and a screw extending through the hub; and the wheel speed sensing device described above.
  • the magnetic field generating component of the magnetic field generating unit of the wheel speed sensing device of the present application and the sensing component of the sensing circuit board are disposed substantially perpendicular to the central axis of the hub. With such a setting, the axial tolerance is small, and a more stable magnetic field generation can be obtained.
  • the air gap between the magnetic field generating component of the unit and the sensing component of the sensing circuit board, that is, the spacing between the two is more stable, reducing the accuracy requirement for the product size, and at the same time making the detection result of the wheel speed sensing device of the present application more accurate. .
  • the wheel speed sensing device of the present application has a simple structure, and the installation of the wheel speed sensing device of the present application utilizes the existing structure of the wheel hub of the vehicle, and does not require additional use of the mounting bracket, and has the advantages of convenient installation and saving installation man-hours and installation materials.
  • FIG. 1 is a cross-sectional view of a wheel hub of a vehicle on which a wheel speed sensing device in accordance with one possible embodiment of the present application is mounted.
  • FIG. 2 is a perspective view of the wheel speed sensing device shown in FIG. 1.
  • FIG. 3 is a perspective exploded view of the wheel speed sensing device shown in FIG. 1.
  • FIG. 4 is a schematic exploded view of the fixing member of the wheel speed sensing device shown in FIG. 1.
  • the vehicle speed sensing device of the present application will be described below.
  • the wheel speed sensing device of the present application is mounted on a wheel of a vehicle for detecting the wheel speed of the vehicle in real time.
  • the vehicles applicable to the wheel speed sensing device of the present application include automobiles, motorcycles, three-wheeled motorcycles, electric bicycles, electric motorcycles, electric tricycles, electric scooters, and the like.
  • the wheel includes a hub 70, a screw 73 extending through the hub, a bearing 72 disposed between the hub 70 and the screw 73, a damper 75 secured to the screw 73, and a nut 74.
  • the hub 70 is provided with a hub boss 71 which is concentrically sleeved between the hub boss 71 and the screw 73 to rotate the hub 70 about the central axis of the screw 73.
  • the wheel speed sensing device of the present application includes an induction unit and a magnetic field generating unit.
  • the sensing unit includes a fixing member and an inductive circuit board 21, wherein the inductive circuit board 21 is fixed on the fixing member, and the inductive circuit board 21 extends in a direction substantially perpendicular to a central axis of the hub 70.
  • the fixing member includes a body portion 110, a receiving portion 111, and a tube portion.
  • the body portion 110 is substantially umbrella-shaped, and the receiving portion 111 extends from the body portion 110 and extends in a direction substantially perpendicular to a central axis of the hub.
  • the receiving groove 112 is formed.
  • the tube portion penetrates the body portion 110 for fixing the sensing unit to the screw 73.
  • the tube portion is a separately provided sleeve 12, and the body portion 110 is provided with a coupling tube 113 that cooperates with the sleeve 12, and the coupling tube 113 is disposed at a central portion of the body portion 110.
  • the sleeve 12 is tightly sleeved on the screw 73, and includes a joint end 121 and a boss end 122.
  • the joint end 121 is interference-fitted with the joint tube 113.
  • the boss end 122 is used to abut the end of the joint tube 113, so that the sleeve 12 and the sleeve 12 are The body portion 110 is tightly fitted. After the sleeve 12 is placed over the screw 73, the body portion 110 cannot be rotated radially or axially relative to the sleeve 12 and the screw 73.
  • the material of the tube portion and the body portion 110 may be different or the same, and the two may be separately formed or integrally formed.
  • the tube portion (i.e., the sleeve 12) and the body portion 110 are separately molded using different materials and then assembled together.
  • the sleeve 12 is made of metal
  • the body portion 110 is made of plastic
  • the two are put together, or the sleeve 12 is bonded to the body portion 110 by injection molding.
  • the tube portion and the body portion 110 are made of the same material, both of which are plastic, and are integrally formed so that the assembly step can be omitted.
  • the tube portion may be a joint tube 113 formed directly on the body portion 110, and the joint tube 113 is directly tightly fitted over the screw 73 so that the body portion 110 cannot be radially or axially moved relative to the screw 73.
  • the sensing circuit board 21 is provided with an inductive component 22.
  • the inductive circuit board 21 is fixed in the receiving slot 112 of the main body 110. That is, the inductive component 22 of the inductive circuit board 21 extends substantially perpendicular to the central axis of the hub 70.
  • the sensing circuit board 21 can be fixed in the receiving groove 112 by clamping, fixing, screwing or other suitable manner.
  • the magnetic field generating unit includes a surrounding portion 31 fixed to the hub boss 71, a carrier portion 32 extending from the surrounding portion 31 to the hub boss 71, and a magnetic field generating member (not shown).
  • the magnetic field generating member is disposed on the carrying portion 32, that is, the magnetic field generating member of the magnetic field generating unit is disposed substantially perpendicular to the central axis of the hub 70.
  • the magnetic field generating member is covered by the main body portion 110 and opposed to the sensing circuit board 21 fixed in the receiving groove 112 of the main body portion 110, and is rotatable relative to the sensing circuit board 21 to be detected by the sensing member 22.
  • the surrounding portion 31 of the magnetic field generating unit extends in the axial direction of the hub boss 71, and the surrounding portion 31 is configured to fit tightly with the hub boss 71 so that the surrounding portion 31 cannot be rotated radially with respect to the hub boss 71 or In the axial direction, the carrying portion 32 extends in the radial direction of the hub boss 71 and abuts against the end surface of the hub boss 71.
  • the bearing 72 When assembled, the bearing 72 is concentrically sleeved between the hub boss 71 and the screw 73, and the magnetic field generating unit is fixed to the hub boss 71 in a tight fit manner, and the joint end 121 of the sleeve 12 is concentrically inserted.
  • the inductive circuit board 21 is fixed in the receiving groove 112 of the main body portion 110; the sleeve 12 is tightly fitted on the screw 73 by an interference fit, so that the sensing circuit board 21 is close to the magnetic field.
  • the magnetic field generating member of the unit is generated; and the rear shock absorber 75 is fixed to the screw 73 such that the shock absorber 75 abuts against the end of the boss end 122 of the sleeve 12, so that both ends of the sleeve 12 respectively abut the bearing 72 and the shock absorber 75, that is, the bearing 72 and the damper 75 press and fix the sleeve 12 therebetween; finally, the nut 74 is fixed, so that the sensing unit of the wheel speed sensing device cannot be rotated or moved, that is, the sensing circuit board 21 cannot be rotated or moved.
  • the hub 70 can rotate through the bearing 72 and simultaneously drive the magnetic field generating unit to rotate, that is, the magnetic field generating member that drives the magnetic field generating unit rotates.
  • the hub 70 drives the magnetic field generating unit to rotate, and the magnetic field generating member rotates to generate an alternating magnetic field, and the inductive member 22 of the instable circuit board 21 that is unable to rotate is subjected to an alternating magnetic field to generate an induction.
  • the circuit thereby knows the rotational speed of the magnetic field generating member based on the change in the induced current, and calculates the traveling speed of the vehicle.
  • the wheel speed sensing device of the present application further includes a transmission line 6 electrically connected to the sensing circuit board 21 for transmitting the detection signal of the wheel speed sensing device to the electronic control unit of the vehicle.
  • the magnetic field generating member of the magnetic field generating unit and the sensing member 22 of the sensing circuit board 21 are disposed substantially perpendicular to the central axis of the hub 70. With such an arrangement, the axial tolerance is small and a more stable magnetic field can be obtained.
  • the air gap between the magnetic field generating member of the generating unit and the sensing member 22 of the sensing circuit board 21, that is, the spacing between the two is more stable, reducing the accuracy requirement for the product size, and simultaneously detecting the wheel speed sensing device of the present application. The result is more precise.
  • the receiving portion 111 for receiving the sensing circuit board 21 extends parallel to the central axis of the body portion 110. Accordingly, the magnetic field generating member of the magnetic field generating unit is fixed to the surrounding portion 31, that is, the sensing circuit. The plate 21 and the magnetic field generating member of the magnetic field generating unit are both parallel to the central axis of the hub 70. Once the radius of the body portion 110 is determined, the distance between the sensing circuit board 21 and the magnetic field generating member of the magnetic field generating unit is difficult to adjust.
  • the magnetic field generating members of the induction circuit board 21 and the magnetic field generating unit are disposed parallel to the central axis of the hub 70, the axial tolerance is large, and the magnetic field generating member and the sensing circuit board 21 of the magnetic field generating unit cannot be conveniently controlled.
  • the air gap between the sensing members 22 requires high precision in product size.
  • the wheel speed sensing device of the present application has a simple structure, and the installation of the wheel speed sensing device of the present application utilizes the existing structure of the wheel hub of the vehicle, and does not require additional use of the mounting bracket, and has the advantages of convenient installation and saving installation man-hours and installation materials.

Abstract

一种轮速传感装置的感应单元，安装于车辆的车轮上，用于实时地检测车辆的车轮速度，车轮包括轮毂（70）和贯穿轮毂（70）的螺杆（73），所述轮速传感装置的感应单元包括：固定件，固定在所述车轮的所述螺杆（73）上；以及感应电路板（21），其上设置有感应件（22），所述感应电路板（21）固定在所述固定件上，所述感应电路板（21）的延伸方向大致垂直于所述轮毂（70）的中心轴。该轮速传感装置的检测结果更精确，且结构简单，安装方便，节省安装工时和安装材料。

Description

轮速传感装置及其感应单元及使用该轮速传感装置的车辆 技术领域
本申请涉及一种轮速传感装置及其感应单元以及使用该轮速传感装置的车辆。
背景技术
车辆在紧急刹车时，制动力过大，车轮容易发生抱死现象。因此，越来越多的车辆使用防抱死装置，以提高电动骑行车辆的安全性和操控能力，降低电动骑行车辆的事故。
防抱死装置中的轮速传感器用来实时地检测车轮的速度，并将检测到的信号传输至防抱死装置的电子控制单元，电子控制单元对这些信号进行逻辑判断和分析并加以计算，一旦识别车轮存在抱死倾向时，及时降低抱死车轮上的制动力，从而防止车轮出现抱死现象，确保车辆在制动中具有良好的行驶稳定性，并避免发生交通事故。
轮速传感器的安装方式直接影响轮速传感器检测信号的准确性。以电动骑行车辆为例，如日本专利申请第2009255826A号所揭示，为了将轮速传感器安装到电动骑行车辆上，其做法是：先将轮速传感器安装到一支架上，再将该支架安装到车辆车轮的轮毂上。因此，安装轮速传感器时，需要一个附加的支架连接过程，导致安装过程复杂化，生产周期长，且生产成本高。
发明内容
本申请的目的在于克服现有的技术的不足，提供一种轮速传感装置及其感应单元以及使用该轮速传感装置的车辆，其结构简单且安装方便。
为实现此目的，本申请在一个方面提供了一种轮速传感装置的感应单元，安装于车辆的车轮上，用于实时地检测车辆的车轮速度，车轮包括轮毂和贯穿轮毂的螺杆，所述轮速传感装置的感应单元包括：固定件，固定在所述车轮的所述螺杆上；以及感应电路板，其上设置有感应件，所述感应电路板固定在所述固定件上，所述感应电路板的延伸方向大致垂直于所述轮毂的中心轴。
在所述轮速传感装置的感应单元中，可选地，所述固定件包括本体部和收容部，所述收容部自所述本体部延伸并沿大致垂直于所述轮毂的中心轴的方向延伸，用以收容所述感应电路板。
在所述轮速传感装置的感应单元中，可选地，所述感应电路板通过卡持固定、粘贴固定、螺钉固定或其他适宜的方式固定在所述收容部内。
在所述轮速传感装置的感应单元中，可选地，所述固定件包括管部，用以将所述轮速传感装置的感应单元固定在所述螺杆上，所述管部贯穿所述本体部，所述管部与所述本体部一体形成。
在所述轮速传感装置的感应单元中，可选地，所述固定件包括管部，用以将所述轮速传感装置的感应单元固定在所述螺杆上，所述管部是单独形成的套管，所述本体部设置有与所述套管配合的结合管。
在所述轮速传感装置的感应单元中，可选地，所述套管包括结合端和凸台端，所述结合端与所述结合管干涉配合，所述凸台端用以抵持所述结合管的末端。
在所述轮速传感装置的感应单元中，可选地，所述管部是与本体部使用相同或不同材料制成。
在所述轮速传感装置的感应单元中，可选地，所述套管通过过盈配合的方式紧密套在所述螺杆上。
本申请在其另一方面提供了一种轮速传感装置，安装于车辆的车轮上，用于实时地检测车辆的车轮速度，车轮包括轮毂和贯穿轮毂的螺杆，所述轮速传感装置包括：磁场产生单元，固定在轮毂上并随轮毂转动，所述磁场产生单元包括磁场产生件，所述磁场产生件的延伸方向大致垂直于轮毂的中心轴设置；以及前面所述的轮速传感装置的感应单元。
在所述轮速传感装置中，可选地，所述磁场产生单元包括一固定于轮毂的环绕部以及由环绕部向轮毂轴心延伸的承载部，所述磁场产生件设置在承载部上。
在所述轮速传感装置中，可选地，所述磁场产生件被所述感应单元的本体部套覆，并与固定在所述本体部的所述感应电路板相对，用以相对所述感应电路板转动而被所述感应件侦测。
本申请在其另一方面提供了一种车辆，包括：车轮，包括轮毂和贯穿轮毂的螺杆；以及前面所述的轮速传感装置。
本申请轮速传感装置的磁场产生单元的磁场产生件以及感应电路板的感应件均大致垂直于轮毂的中心轴设置，利用这样的设置，轴向公差小，且可得到更稳定的磁场产生单元的磁场产生件与感应电路板的感应件之间的气隙，即二者之间的间距更稳定，降低对产品尺寸的精度要求，同时使本申请轮速传感装置的检测结果更精确。
本申请轮速传感装置结构简单，且本申请轮速传感装置的安装利用车辆的车轮轮毂的已有结构，不需要额外使用安装支架，具有安装方便节省安装工时和安装材料的优点。
附图说明
本申请的前述和其它方面将通过下面参照附图所做的详细介绍而被更完整地理解和了解，在附图中：
图1绘示一种车辆的车轮轮毂的剖面示意图，其上安装有根据本申请的一种可行实施方式的轮速传感装置。
图2绘示图1所示的轮速传感装置的立体示意图。
图3绘示图1所示的轮速传感装置的立体分解示意图。
图4绘示图1所示的轮速传感装置的固定件的爆炸示意图。
具体实施方式
下面将对本申请的车辆速度感测装置进行描述。
参照图1至图4，为本申请轮速传感装置安装于车辆的车轮上，用于实时地检测车辆的车轮速度。本申请轮速传感装置适用的车辆包括汽车、摩托车、三轮摩托车、电动自行车、电动摩托车、电动三轮车、电动踏板车等。车轮包括轮毂70、贯穿轮毂的螺杆73、设置在轮毂70与螺杆73之间的轴承72、固定在螺杆73上的减震器75以及螺母74。轮毂70设置有轮毂凸台71，轴承72同心套设在轮毂凸台71与螺杆73之间，使轮毂70绕螺杆73的中心轴旋转。本申请轮速传感装置包含感应单元以及磁场产生单元。感应单元包括固定件和感应电路板21，其中感应电路板21固定在固定件上，感应电路板21的延伸方向大致垂直于轮毂70的中心轴。
固定件包括本体部110、收容部111和管部。本体部110大致呈伞状，收容部111自本体部110延伸并沿大致垂直于轮毂中心轴的方向延伸，形 成收容槽112。管部贯穿本体部110，用以将感应单元固定在螺杆73上。在本实施方式中，管部是单独设置的套管12，本体部110设置有与套管12配合的结合管113，结合管113贯穿设置在本体部110的中部。套管12用以紧密套在螺杆73上，包括有结合端121和凸台端122，结合端121与结合管113干涉配合，凸台端122用以抵持结合管113的末端，使套管12与本体部110紧密配合。套管12套在螺杆73上后，使本体部110不能相对于套管12和螺杆73作径向转动或轴向移动。
管部与本体部110的制造材料可以不同或相同，二者可以单独成型，也可以一体成型。在本实施方式中，管部(即套管12)与本体部110分别使用不同材料单独成型，然后组装在一起。例如套管12由金属制成，本体部110由塑料制成，然后将二者套装在一起，或者利用注塑成型方式使套管12与本体部110结合在一起。在其他实施方式中，管部与本体部110的制造材料相同，均为塑料，二者一体成型，从而可省略组装步骤。例如，管部可以是直接形成在本体部110上的结合管113，该结合管113直接紧密套在螺杆73上，使本体部110不能相对于螺杆73作径向转动或轴向移动。
该感应电路板21上设置有感应件22，感应电路板21固定在本体部110的收容槽112内，即感应电路板21的感应件22的延伸方向大致垂直于轮毂70的中心轴设置。感应电路板21可通过卡持固定、粘贴固定、螺钉固定或其他适宜的方式固定在收容槽112内。
该磁场产生单元包括固定于轮毂凸台71的环绕部31、由环绕部31向轮毂凸台71轴心延伸的承载部32以及磁场产生件(未图示)。在本实施方式中，磁场产生件设置在承载部32，即磁场产生单元的磁场产生件大致垂直于轮毂70的中心轴设置。组装后，该磁场产生件被本体部110套覆，并与固定在本体部110的收容槽112内的感应电路板21相对，能相对于该感应电路板21转动而被感应件22侦测。
该磁场产生单元的环绕部31沿轮毂凸台71的轴向延伸，且环绕部31被构造成适合与轮毂凸台71紧密配合，使环绕部31不能相对于轮毂凸台71作径向转动或轴向移动，承载部32沿轮毂凸台71的径向延伸并紧贴轮毂凸台71的端面。
组装时，轴承72同心套设在轮毂凸台71与螺杆73之间，将磁场产生单元以紧密配合方式固定在轮毂凸台71上，套管12的结合端121同心插 入本体部110的结合管113，将感应电路板21固定在本体部110的收容槽112内；然后将套管12通过过盈配合的方式紧密套在螺杆73上，使感应电路板21靠近磁场产生单元的磁场产生件；而后减震器75固定在螺杆73上，使减震器75抵靠套管12的凸台端122末端，使套管12的两端分别抵持轴承72和减震器75，即轴承72和减震器75将套管12挤压固定于其间；最后利用螺母74固定，使轮速传感装置的感应单元无法转动或移动，即感应电路板21无法转动或移动，而轮毂70能透过轴承72转动并同时带动该磁场产生单元转动，即带动磁场产生单元的磁场产生件转动。
当车辆行驶时，该轮毂70带动该磁场产生单元转动，该磁场产生件跟着旋转而产生交变的磁场，无法转动的感应电路板21的感应件22即会受到交变磁场的作用，产生感应电路，从而根据感应电流的变化而得知该磁场产生件的转动速度，计算出车辆的行驶速度。本申请轮速传感装置还包括传输线6，与感应电路板21电性连接，用以将轮速传感装置的检测信号传输至车辆的电子控制单元。
在本实施方式中，磁场产生单元的磁场产生件以及感应电路板21的感应件22均大致垂直于轮毂70的中心轴设置，利用这样的设置，轴向公差小，且可得到更稳定的磁场产生单元的磁场产生件与感应电路板21的感应件22之间的气隙，即二者之间的间距更稳定，降低对产品尺寸的精度要求，同时使本申请轮速传感装置的检测结果更精确。
在其他实施方式中，用以收容感应电路板21的收容部111平行于本体部110的中心轴延伸，相应地，磁场产生单元的磁场产生件固定于环绕部31上，也就是说，感应电路板21与磁场产生单元的磁场产生件均平行于轮毂70的中心轴。一旦本体部110的半径确定，感应电路板21与磁场产生单元的磁场产生件之间的距离就难以调整。因此将感应电路板21与磁场产生单元的磁场产生件均设置成平行于轮毂70的中心轴的方式，轴向公差较大，也不能方便地控制磁场产生单元的磁场产生件与感应电路板21的感应件22之间的气隙，对产品尺寸的精度要求高。
本申请轮速传感装置结构简单，且本申请轮速传感装置的安装利用车辆的车轮轮毂的已有结构，不需要额外使用安装支架，具有安装方便节省安装工时和安装材料的优点。
虽然基于特定的实施方式显示和描述了本申请，但本申请并不限制于 所示出的细节。相反地，在权利要求及其等同替换的范围内，本申请的各种细节可以被改造。

Claims (12)

  1. 一种轮速传感装置的感应单元，安装于车辆的车轮上，用于实时地检测车辆的车轮速度，车轮包括轮毂和贯穿轮毂的螺杆，所述轮速传感装置的感应单元包括：
    固定件，固定在所述车轮的所述螺杆上；以及
    感应电路板，其上设置有感应件，所述感应电路板固定在所述固定件上，所述感应电路板的延伸方向大致垂直于所述轮毂的中心轴。
  2. 如权利要求1所述的轮速传感装置的感应单元，其中，所述固定件包括本体部和收容部，所述收容部自所述本体部延伸并沿大致垂直于所述轮毂的中心轴的方向延伸，用以收容所述感应电路板。
  3. 如权利要求2所述的轮速传感装置的感应单元，其中，所述感应电路板通过卡持固定、粘贴固定、螺钉固定或其他适宜的方式固定在所述收容部内。
  4. 如权利要求2所述的轮速传感装置的感应单元，其中，所述固定件包括管部，用以将所述轮速传感装置的感应单元固定在所述螺杆上，所述管部贯穿所述本体部，所述管部与所述本体部一体形成。
  5. 如权利要求2所述的轮速传感装置的感应单元，其中，所述固定件包括管部，用以将所述轮速传感装置的感应单元固定在所述螺杆上，所述管部是单独形成的套管，所述本体部设置有与所述套管配合的结合管。
  6. 如权利要求5所述的轮速传感装置的感应单元，其中，所述套管包括结合端和凸台端，所述结合端与所述结合管干涉配合，所述凸台端用以抵持所述结合管的末端。
  7. 如权利要求5或6所述的轮速传感装置的感应单元，其中，所述管部与本体部使用相同或不同材料制成。
  8. 如权利要求5或6所述的轮速传感装置的感应单元，其中，所述套管通过过盈配合的方式紧密套在所述螺杆上。
  9. 一种轮速传感装置，安装于车辆的车轮上，用于实时地检测车辆的车轮速度，车轮包括轮毂和贯穿轮毂的螺杆，所述轮速传感装置包括：
    磁场产生单元，固定在轮毂上并随轮毂转动，所述磁场产生单元包括磁场产生件，所述磁场产生件的延伸方向大致垂直于轮毂的中心轴设置； 以及
    如权利要求1-8中任一项所述的轮速传感装置的感应单元。
  10. 如权利要求9所述的轮速传感装置，其中，所述磁场产生单元包括一固定于轮毂的环绕部以及由环绕部向轮毂轴心延伸的承载部，所述磁场产生件设置在承载部上。
  11. 如权利要求9所述的轮速传感装置，其中，所述磁场产生件被所述感应单元的本体部套覆，并与固定在所述本体部的所述感应电路板相对，用以相对所述感应电路板转动而被所述感应件侦测。
  12. 一种车辆，包括：
    车轮，包括轮毂和贯穿轮毂的螺杆；以及
    如权利要求9-11中任一项所述的轮速传感装置。
PCT/CN2014/095104 2013-12-30 2014-12-26 轮速传感装置及其感应单元及使用该轮速传感装置的车辆 WO2015101219A1 (zh)

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