WO2015101222A1 - 轮速传感器及车辆 - Google Patents

轮速传感器及车辆 Download PDF

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Publication number
WO2015101222A1
WO2015101222A1 PCT/CN2014/095110 CN2014095110W WO2015101222A1 WO 2015101222 A1 WO2015101222 A1 WO 2015101222A1 CN 2014095110 W CN2014095110 W CN 2014095110W WO 2015101222 A1 WO2015101222 A1 WO 2015101222A1
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WIPO (PCT)
Prior art keywords
speed sensor
wheel speed
circuit board
wheel
sensor according
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PCT/CN2014/095110
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English (en)
French (fr)
Inventor
杨超
杨鑫
张喆
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博世汽车部件(苏州)有限公司
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Publication of WO2015101222A1 publication Critical patent/WO2015101222A1/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
    • G01P1/00—Details of instruments
    • G01P1/02—Housings
    • G01P1/026—Housings for speed measuring devices, e.g. pulse generator

Definitions

  • the present application relates to a wheel speed sensor and a vehicle using the same.
  • 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.
  • Existing active wheel speed sensors typically include a sensing element such as a Hall IC, a cable electrically coupled to the sensing element through the H-shaped terminal, a bracket housing the assembly, and an insulative housing enclosing the bracket, typically It is manufactured in the following manner.
  • a sensing element such as a Hall IC
  • a cable electrically coupled to the sensing element through the H-shaped terminal
  • a bracket housing the assembly and an insulative housing enclosing the bracket, typically It is manufactured in the following manner.
  • the wires of the cable are connected to one end of the H-shaped terminal by crimping.
  • the connected cables and H-shaped terminals are molded to form the cable and the H-shaped terminal bracket.
  • a sensing element such as a Hall IC is placed in the holder, and the sensing element is electrically connected to the other end of the H-shaped terminal exposed from the holder by resistance welding.
  • the assembly obtained by the above process is integrally molded in a mold to form an insulating casing including a flange and a rib, and thereby a wheel speed sensor is finally obtained.
  • the above-described conventional wheel speed sensor has a complicated structure and a complicated manufacturing process, resulting in a long production cycle and high production cost.
  • the purpose of the present application is to overcome the deficiencies of the prior art, and to provide a vehicle with a wheel speed sensor using the wheel speed sensor, which has a simple structure and convenient assembly.
  • a wheel speed sensor comprising: a housing, a body portion and a fixing portion, wherein the body portion is provided with a pre-formed receiving groove, the fixing The portion is used for fixing the wheel speed sensor to the wheel of the vehicle; and the sensing circuit board is provided with an inductive component, and the sensing circuit board is inserted and fixed in the receiving groove of the body portion.
  • the body portion and the fixing portion may be integrally formed or assembled separately after molding.
  • the receiving groove may be disposed inside the body portion or may be disposed on a surface of the body portion.
  • the sensing circuit board can be fixed in the receiving groove of the body portion by clamping, fixing, screwing or other suitable manner.
  • the outer surface of the inductive circuit board is surrounded by a protective case made of a soft material or a hard material.
  • the protective case is provided with a mating portion that interferes with the receiving groove.
  • the housing includes a sealing portion for sealing a receiving groove that has been inserted into the sensing circuit board.
  • the sealing portion is glue, tape, sealing strip or silica gel.
  • the wheel speed sensor further includes a transmission line, one end of the transmission line is electrically connected to the sensing circuit board, and the other end is connected with a connector for transmitting the detection signal of the wheel speed sensor.
  • a transmission line one end of the transmission line is electrically connected to the sensing circuit board, and the other end is connected with a connector for transmitting the detection signal of the wheel speed sensor.
  • the present application in another aspect thereof, provides a vehicle including: a wheel including a rotatable portion and a non-rotatable portion; a magnetic ring fixed to a rotatable portion of the wheel; and a wheel speed sensor as described above, the wheel The speed sensor is fixed to the non-rotatable portion of the wheel.
  • the wheel speed sensor of the present application has a simple structure, and the induction circuit board can be inserted into the pre-formed housing.
  • the sensor board and the housing can be replaced in real time as needed, resulting in flexibility in product design.
  • FIG. 1 is a schematic diagram showing a connection relationship of a wheel speed sensor in a vehicle according to a possible embodiment of the present application.
  • FIG. 2 is a schematic view of the wheel speed sensor shown in FIG. 1.
  • the vehicle speed sensor of the present application will be described below.
  • the wheel speed sensor 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 sensor of the present application include automobiles, motorcycles, three-wheeled motorcycles, electric bicycles, electric motorcycles, electric tricycles, electric scooters, and the like.
  • the wheel speed sensor of the present application includes a housing 10, an inductive circuit board 21, and a transmission line 6.
  • the casing 10 is made of an insulating material such as rubber or plastic, and includes a body portion 11 and a fixing portion 12, and the body portion 11 and the fixing portion 12 may be integrally formed or assembled separately and molded.
  • the main body portion 10 is provided with a receiving groove for receiving and fixing the induction circuit board 21.
  • the receiving groove may be disposed inside the body portion 11. In other embodiments, the receiving groove may be disposed on the surface of the body portion 11 as long as the sensing circuit board 21 can be fixed.
  • the fixing portion 12 is fixed to the non-rotatable portion of the wheel for preventing the wheel speed sensor of the present application from rotating or moving.
  • the sensing circuit board 21 is provided with an inductive component 22, which may be a Hall switch, a Hall latch, or a Hall effect-based two-wire Hall sensor chip.
  • the sensing circuit board 21 is inserted into and fixed in the receiving groove of the body portion 110.
  • the sensing circuit board 21 can be fixed in the receiving groove of the body portion 11 by an interference fit.
  • the sensing circuit board 21 can also be fixed in the receiving groove of the body portion 11 by snapping, adhesive fixing, screwing or other suitable manner.
  • the outside of the sensing circuit board 21 may be covered with a protective case (not shown), which may be soft. Made of materials or hard materials.
  • An interference fit portion is disposed on the surface of the protective cover for interference fit with the receiving groove, such as a bump or a rib.
  • One end of the transmission line 6 is electrically connected to the sensing circuit board 21, and the other end is connected with a connector 7, and the detection signal of the wheel speed sensor is transmitted to the electronic control unit 8 of the vehicle.
  • the core of the transmission line 6 is electrically connected to the line of the sensing circuit board 21 by soldering, and then the soldered sensing circuit board 21 is inserted into the receiving slot of the housing 10, and then the fixing portion 12 is bolted or Other means are fixed to the non-rotatable portion of the wheel so that the wheel speed sensor of the present application cannot be rotated or moved.
  • the magnetic ring 3 is fixed to a rotatable portion of the wheel, such as a hub (not shown), so that the magnetic ring 3 is opposed to the sensing circuit board 21 and maintains a certain gap.
  • the gap can be controlled, for example, between 0.3 mm and 1.5 mm. 3 is coaxial with the wheel and can be relative to the The sensing circuit board 21 is rotated and detected by the sensing element 22.
  • the housing 10 further includes a sealing portion (not shown). After the soldered sensing circuit board 21 is inserted into the receiving slot of the housing 10, the sealing portion can be used to seal the receiving slot of the housing 10. Dustproof and waterproof.
  • the sealing portion may be a PCB filling glue, glue, tape, sealing strip or silica gel.
  • the hub drives the magnetic ring 3 to move coaxially to generate an alternating magnetic field, and the sensing element 22 of the inductive circuit board 21 that cannot be rotated is subjected to an alternating magnetic field to generate a corresponding magnetic field.
  • the Hall signal is changed, and the electronic control unit 8 knows the rotational speed of the magnetic ring 3 based on the magnetic variable Hall signal and the rolling radius of the wheel, and calculates the traveling speed of the vehicle.
  • the wheel speed sensor of the present application has a simple structure, and the induction circuit board 21 can be inserted into the pre-formed housing 10. In addition, the sensing circuit board 21 and the housing 10 can be replaced in real time as needed, so that product design flexibility is good.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Regulating Braking Force (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

一种轮速传感器包括：壳体（10），本体部（11）和固定部（12），所述本体部（11）内设置有收容槽，所述固定部（12）用以将轮速传感器固定于车辆的车轮上；以及感应电路板（21），其上设置有感应元件（22），感应电路板（21）插入并固定在本体部（11）的收容槽内。本轮速传感器结构简单，将感应电路板（21）插入事先形成的壳体（10）内即可。此外，可根据需要，实时更换感应电路板（21）和壳体（10），因而产品设计的灵活性好。

Description

轮速传感器及车辆 技术领域
本申请涉及一种轮速传感器及使用该轮速传感器的车辆。
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。
现有的主动式轮速传感器通常包括诸如霍尔IC的传感元件、通过H形端子与传感元件电连接的电缆、容装上述组件的支架以及封装所述支架的绝缘外壳，其典型地通过以下方式制造。
首先，将电缆的导线与H形端子的一端通过压接进行连接。接着，对连接在一起的电缆和H形端子进行模塑，以形成容装所述电缆和所述H形端子支架。随后，将诸如霍尔IC的传感元件放置于支架中，并通过电阻焊使传感元件与从支架中露出的H形端子的另一端电连接。最后，将通过以上过程获得的组件在模具中进行整体外形注塑，以形成包含法兰和加强筋的绝缘外壳，并由此最终获得轮速传感器。
从以上描述可以清楚地看出，在上述现有轮速传感器的结构复杂，制造过程复杂，导致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，提供一种轮速传感器使用该轮速传感器的车辆，其结构简单且组装方便。
为实现此目的，本申请在一个方面提供了一种轮速传感器，包括：壳体，本体部和固定部，所述本体部内设置有预先形成的收容槽，所述固定 部用以将轮速传感器固定于车辆的车轮上；以及感应电路板，其上设置有感应元件，感应电路板插入并固定在本体部的收容槽内。
在所述轮速传感器中，可选地，所述本体部和所述固定部可一体成型，或者单独成型后组装在一起。
在所述轮速传感器中，可选地，所述收容槽可以设置在所述本体部的内部，也可以设置在所述本体部的表面。
在所述轮速传感器中，可选地，所述感应电路板可通过卡持固定、粘贴固定、螺钉固定或其他适宜的方式固定在本体部的收容槽内。
在所述轮速传感器中，可选地，所述感应电路板的外部围设有保护壳，所述保护壳由软性材料或硬性材料制成。
在所述轮速传感器中，可选地，所述保护壳设置有与收容槽干涉配合的配合部。
在所述轮速传感器中，可选地，所述壳体包括密封部，用以密封已插入感应电路板的收容槽。
在所述轮速传感器中，可选地，所述密封部是胶水、胶带、密封条或硅胶。
在所述轮速传感器中，可选地，所述轮速传感器还包括传输线，所述传输线一端与感应电路板电性连接，另一端连接有连接器，用以将轮速传感器的检测信号传输至车辆的电子控制单元。
本申请在其另一方面提供了一种车辆包括：车轮，其包括可转动部分和不可转动部分；磁性环，固定于车轮的可转动部分上；以及前面所述的轮速传感器，所述轮速传感器固定于车轮的不可转动部分上。
本申请轮速传感器结构简单，将感应电路板插入预先成型的壳体内即可。此外，可根据需要，实时更换感应电路板和壳体，因而产品设计的灵活性好。
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绘示根据本申请的一种可行实施方式的轮速传感器在车辆内的连接关系示意图。
图2绘示图1所示的轮速传感器的示意图。
具体实施方式
下面将对本申请的车辆速度感测器进行描述。
参照图1和图2，本申请轮速传感器安装于车辆的车轮上，用于实时地检测车辆的车轮速度。本申请轮速传感器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。本申请轮速传感器包括壳体10、感应电路板21和传输线6。
壳体10由绝缘材料例如橡胶、塑料制成，包括本体部11和固定部12，本体部11和固定部12可以一体成型，或者单独成型后组装在一起。本体部10设置有收容槽，用以收容并固定感应电路板21。该收容槽可以设置在本体部11内部。在其他实施方式中，该收容槽也可以设置在本体部11表面，只要可以固定感应电路板21即可。固定部12固定于车轮的不可转动部分上，用以使本申请轮速传感器无法转动或移动。
该感应电路板21上设置有感应元件22，该感应元件22可以是霍尔开关、霍尔锁存器、或者基于霍尔效应的双线式霍尔传感器芯片。感应电路板21插入并固定在本体部110的收容槽内。感应电路板21可通过过盈配合的方式固定在本体部11的收容槽内。在其他实施方式中，感应电路板21还可通过卡持固定、粘贴固定、螺钉固定或其他适宜的方式固定在本体部11的收容槽内。另外，在其他实施方式中，为防止该感应电路板21在插入本体部110时受到损坏，该感应电路板21的外部可包覆一保护壳(未图示)，该保护壳可以由软性材料或硬性材料制成。该保护套表面上设置有干涉配合部，用以与收容槽干涉配合，该干涉配合部例如是凸点或凸肋。
传输线6一端与感应电路板21电性连接，另一端连接有连接器7，将轮速传感器的检测信号传输至车辆的电子控制单元8。
组装时，通过焊接方式，使传输线6的线芯与感应电路板21的线路电性连接，然后将焊接好的感应电路板21插入壳体10的收容槽内，然后将固定部12通过螺栓或其他方式固定于车轮的不可转动部分上，使本申请轮速传感器无法转动或移动。磁性环3固定于车轮的可转动部分例如轮毂(未图示)上，使磁性环3与感应电路板21相对并保持一定间隙，该间隙例如可以控制在0.3mm～1.5mm之间，磁性环3与车轮同轴运动，并能相对于该 感应电路板21转动而被感应元件22侦测。
在其他实施方式中，壳体10还包括密封部(未图示)，焊接好的感应电路板21插入壳体10的收容槽内后，可以使用密封部密封壳体10的收容槽，用以防尘防水。该密封部可以是PCB灌装胶、胶水、胶带、密封条或硅胶等。
当车辆行驶时，车轮的可转动部分例如轮毂带动磁性环3同轴运动而产生交变的磁场，无法转动的感应电路板21的感应元件22即会受到交变磁场的作用，产生对应的磁变霍尔信号，电子控制单元8根据磁变霍尔信号和车轮的滚动半径得知该磁性环3的转动速度，计算出车辆的行驶速度。
本申请轮速传感器结构简单，将感应电路板21插入预先成型的壳体10内即可。此外，可根据需要，实时更换感应电路板21和壳体10，因而产品设计的灵活性好。
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 (10)

  1. 一种轮速传感器，包括：
    壳体，本体部和固定部，所述本体部内设置有预先形成的收容槽，所述固定部用以将轮速传感器固定于车辆的车轮上；以及
    感应电路板，其上设置有感应元件，感应电路板插入并固定在本体部的收容槽内。
  2. 如权利要求1所述的轮速传感器，其中，所述本体部和所述固定部可一体成型，或者单独成型后组装在一起。
  3. 如权利要求1所述的轮速传感器，其中，所述收容槽可以设置在所述本体部的内部，也可以设置在所述本体部的表面。
  4. 如权利要求1所述的轮速传感器，其中，所述感应电路板可通过过盈配合、卡持固定、粘贴固定、螺钉固定或其他适宜的方式固定在本体部的收容槽内。
  5. 如权利要求1所述的轮速传感器，其中，所述感应电路板的外部围设有保护壳，所述保护壳由软性材料或硬性材料制成。
  6. 如权利要求1所述的轮速传感器，其中，所述保护壳设置有与收容槽干涉配合的配合部。
  7. 如权利要求1所述的轮速传感器，其中，所述壳体包括密封部，用以密封已插入感应电路板的收容槽。
  8. 如权利要求7所述的轮速传感器，其中，所述密封部是PCB灌装胶、胶水、胶带、密封条或硅胶。
  9. 如权利要求1所述的轮速传感器，其中，所述轮速传感器还包括传输线，所述传输线一端与感应电路板电性连接，另一端连接有连接器，用以将轮速传感器的检测信号传输至车辆的电子控制单元。
  10. 一种车辆，包括：
    车轮，其包括可转动部分和不可转动部分；
    磁性环，固定于车轮的可转动部分上；以及
    如权利要求1-9中任意一项所述的轮速传感器，所述轮速传感器固定于车轮的不可转动部分上。
PCT/CN2014/095110 2013-12-31 2014-12-26 轮速传感器及车辆 WO2015101222A1 (zh)

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CN113325194A (zh) * 2021-05-11 2021-08-31 樊超 一种汽车专用abs磁电式轮速传感器

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CN203637813U (zh) * 2013-12-30 2014-06-11 博世汽车部件(苏州)有限公司 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
CN203643462U (zh) * 2013-12-31 2014-06-11 博世汽车部件(苏州)有限公司 轮速传感器及车辆
CN104122408B (zh) * 2014-08-05 2016-08-24 华中科技大学 一种用于水下轮式小车的速度测量装置

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