WO2020152494A1 - Système de connexion et câble pour connecter un epb et des ws - Google Patents

Système de connexion et câble pour connecter un epb et des ws Download PDF

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Publication number
WO2020152494A1
WO2020152494A1 PCT/IB2019/000082 IB2019000082W WO2020152494A1 WO 2020152494 A1 WO2020152494 A1 WO 2020152494A1 IB 2019000082 W IB2019000082 W IB 2019000082W WO 2020152494 A1 WO2020152494 A1 WO 2020152494A1
Authority
WO
WIPO (PCT)
Prior art keywords
epb
wire
data wire
load wires
wss
Prior art date
Application number
PCT/IB2019/000082
Other languages
English (en)
Inventor
Michael HAUSISCHMID
Erwin Köppendörfer
Original Assignee
Leoni Kabel Gmbh
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 Leoni Kabel Gmbh filed Critical Leoni Kabel Gmbh
Priority to PCT/IB2019/000082 priority Critical patent/WO2020152494A1/fr
Publication of WO2020152494A1 publication Critical patent/WO2020152494A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/08—Brake-action initiating means for personal initiation hand actuated
    • B60T7/10—Disposition of hand control
    • B60T7/107—Disposition of hand control with electrical power assistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/003—Power cables including electrical control or communication wires

Definitions

  • This disclosure relates generally to cables used in drive-by-wire applications for vehicles, and particularly to an Electrical Parking Brake (EPB) and Wheel Speed Sensor (WSS) cable with a single data wire.
  • EPB Electrical Parking Brake
  • WSS Wheel Speed Sensor
  • load/data cables i.e., those having both a load line and data line are well known and have been used for a long period of time for reducing the weight of load and data wirings in vehicles and for simplifying their assembly.
  • Various illustrative embodiments of the present disclosure provide a complex cable and related methods.
  • the complex cable is implemented with a WSS, EPB, and associated control module.
  • the present disclosure allows for reducing the weight of load/data cables for the
  • EPB and WSS decreasing the amount of materials needed for their manufacturing and simplifying the manufacturing process, thereby reducing the cost of the final product.
  • a WSS produces low frequency signals, typically not exceeding several kHz.
  • the WSS is connected to the vehicle’s EPB and WSS control module, which feeds DC voltage to the WSS.
  • a WSS sensor monitors the wheel’s angular velocity and provides an electric sine or rectangular (depending on which kind of sensor is used) impulse to a control module.
  • a conventional variable (passive) wheel speed sensor is comprised of a magnetic pin, with a wrapped wire. When a toothed metal ring, which is firmly connected with a wheel, approaches the pin's end a magnetic flux changes, causing a voltage variations at the wire’s terminals.
  • the frequency of the signal produced is directly proportional to the wheel’s rotational speed, and when it increases, the signal’s amplitude similarly increases.
  • An amplitude of the electromotive force is the time derivation of a solenoid’s reluctance, a passive wheel speed sensor generates a low-voltage signal at low speed. Accordingly, the controller, which cannot read this poorly discernible signal, does not do so at all at speeds, particularly at speeds, for example, of 3 - 5 mph.
  • the EPB is an electromagnetic system that fixes a vehicle in a motionless state by using a DC motor, which applies pressure to braking pads via the EPB’s gear train and spindle piston. Since an EPB is commonly used only when a vehicle is motionless or when its speed is below 5 mph, the EPB is active when a vehicle is motionless and the WSS operates only when it is in motion.
  • One aspect of the present disclosure relates to the separation of signals in time in consideration of the fact that the WSS generates a low-frequency signal not exceeding several kHz and that the EPB is active only when a vehicle is motionless and the WSS operates only when the vehicle is in motion.
  • a WSS data return wire is omited, and instead, one of two EBP load wires, in particular an EBP ground wire, is utilized as a return conductor for the W SS.
  • the low-frequency data signals generated by the sensor of the WSS allows for producing cables with length of up to 15m, in which there are no wave conditions, so that an adaptation of the impedance between the data wire and the load wires can be omitted.
  • a cable for connecting a WSS is a cable for connecting a WSS
  • EPB, and control module comprises an EPB ground load wire, an EPB power load wire, and a WSS power data wire.
  • Each of the EPB ground load wire, EPB power load wire, and WSS power data wire may include a central conductive core surrounding by insulation.
  • the EPB ground load wire, EPB power load wire, and WSS power data wire may be collectively encased in a common outer sheath.
  • the EPB ground load wire and EPB power load wire have approximately the same outer diameter.
  • the centers of the EPB ground load wire and EPB power load wire i.e., the centers in a cross-sectional view along the length of the cable
  • the EPB ground load wire and EPB power load wire may run parallel to each other along the length of the cable.
  • the EPB ground load wire and EPB power load wire contact each other at, at least one point on their respective outer surfaces.
  • the WSS power data wire has an outer diameter that is less than the outer diameter of the EPB ground load wire and EPB power load wire.
  • the WSS power data wire may have a center (i.e., the centers in a cross- sectional view along the length of the cable) located between the centers of the EPB ground load wire and EPB power load wire.
  • the WSS power data wire may be located in a recessed space formed by the EPB ground load wire and EPB power load wire.
  • a control module, winch controls the WSS and EPB is connected to the WSS and EPB at least partially by way of the cable.
  • the EPB ground load wire, the EPB power load wire, and the WSS power data wire at a first end of the cable are terminated and connected to the control module.
  • the EPB ground load wire, the EPB power load wire, and the WSS power data wire at a second end of the cable are similarly terminated.
  • the EPB ground load wire and the EPB power load wire terminations are connected to the EPB, while the WSS power data wire termination is connected to the WSS.
  • the conductive bridge may take the form of an insulated wire or an uninsulated wire.
  • the conductive bridge may take the form of a part of an external housing, which houses the EPB and W SS.
  • the conductive bridge may be a metallic (or other conductive part) portion of a housing that houses the EPB and WSS.
  • the conductive bridge may be built into an electronic device (e.g., a circuit board) that includes additional functional elements (e.g., inductors, capacitors, etc.).
  • FIG.1 shows a transverse-sectional view of a WSS and EPB cable of the present disclosure
  • FIG.2 shows a WSS and EPB cable of the present disclosure connected to respective elements.
  • connection systerm and methods are disclosed herein; however, it is to be understood that the disclosed embodiments are merely illustrative of a connection system, and methods that may be embodied in various forms.
  • each of the examples given in connection with the various embodiments of the connection systems and methods are intended to be illustrative, and not restrictive.
  • the drawings and photographs are not necessarily to scale, and some features may be exaggerated to show details of particular components.
  • any measurements, specifications and the like shown in the figures are intended to be illustrative, and not restrictive. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present cable system, and methods.
  • the WSS When a vehicle moves, the WSS constantly tracks wheel speed. The frequency of signals passing through the WSS line do not typically exceed several kHz, and there are no wave conditions in WSS cables having a length of up to 15m. Therefore, an adaptation of the impedance between the data wire and the power wires is omitted. When a vehicle is at standstill the EPB operates and the WSS does not. With this in mind, and according to embodiments, only one dedicated wire is necessary for the WSS to properly function.
  • the cable 8 comprises three wires: one EPB ground load wire 1 or 2; one EPB power load wire 1 or 2, and one WSS power data wire 3.
  • Each of the three wires may each include a conductive core that is insulated, while all three are covered with a common sheath 4.
  • EPB wires 1, 2 touch each other along the length of cable 8, so as touch points form a line parallel to the cable’s longitudinal centra! line of symmetry.
  • the EPB ground load wire 1 or 2 and EPB power load wire 1 or 2 have approximately the same outer diameter.
  • the centers of the EPB ground load wire 1 or 2 and EPB power load wire 1 or 2 i.e., the centers in a cross-sectional view along the length of the cable
  • the EPB ground load ware and EPB power load wire may run parallel to each other along the length of the cable 8.
  • EPB ground load wire 1 or 2 and EPB power load wire 1 or 2 may be a twisted wire pair.
  • WSS power data wire 3 may similarly be twisted so as to keep a fixed wire orientation (e.g., the configuration of Fig. 1).
  • the WSS power data wire 3 has an outer diameter that is less than the outer diameter of the EPB ground load wire and EPB power load wire 1, 2.
  • the WSS power data wire may have a center (i.e., the center in a cross-sectional view along the length of the cable) located between the centers of the EPB ground load wire and EPB power load wire. That is, the center of WSS power data wire 3, as illustrated in FIG. 1, is located in a vertical plane that is between the centers of the EPB ground load wire and EPB power load wire 1, 2. According to one embodiment, the WSS power data wire 3 may be located in a recessed space formed by the EPB ground load wire and EPB power load wire. According to these embodiments, power data wire 3 may be adjacent to and abut each of the EPB ground load wire 1 or 2 and EPB power load wire 1 or 2.
  • a filler material may be located in the spaces between the wires and the outer sheath such that the wires do not move within the cable.
  • the outer sheath may be formed via an extrusion process (e.g., pressure extrusion), such that its thickness fills the interior space of cable 8 and makes contact with the outer surface of the wires.
  • the spaces between the wires and the outer sheath may be filled with a filler material (e.g., yam, filaments, etc.).
  • the space between the wires i.e., the space created by abutting surfaces of the wires
  • the space between the wires and the outer sheath is left empty (e.g., filled with a gas), such that the wires may move within the cable.
  • a separator may surround the wires, thus separating them from contacting the outer sheath.
  • the separator may take the form of a foil, paper, or fleece sheath, and thus act as an inner sheath for encasing the three wires.
  • the separator may take the form of a powder that is placed (e.g., sprayed) on the three wires.
  • the cable may consist essentially of two load wires, one data wire, and an outer sheath.
  • the cable consists of two load wires, one data wire, and an outer sheath.
  • a ground terminal of the WSS 5 is connected with a ground terminal of the EPB 6 by means of a conductive bridge 9.
  • the EPB 6 and WSS 5 are connected with the EPB and WSS Control Module 7, which controls by the WSS 5 and EPB 6, by the way of cable 8.
  • the EPB ground load wire, the EPB power load wire, and the WSS power data wire at a first end of the cable are terminated and connected to respective terminals of the control module 7.
  • the EPB ground load wire, the EPB power load wire, and the WSS power data wire at a second end of the cable 8 are similarly terminated.
  • the EPB ground load wire and the EPB power load wire terminations are connected to the EPB, while the WSS power data wire termination is connected to the WSS.
  • the EPB 6 is active only when a vehicle is motionless and the WSS 5 operates only when the vehicle is in motion, the shared EPB ground load wire 1 or 2 is used for both the WSS and EBP individually. Neither the WSS nor EPB are active at the same time, and thus, the shared EPB ground wire does not cater to both the WSS and EBP concurrently.
  • the WSS continuously monitors the rotational speed of its wheel, and the EPB is not active, so that the EPB does not require a supply of power.
  • the signals generated by the WSS are delivered to the EPB and WSS Control Module through the EPB’s ground wire, by way of the conductive bridge and the W SS power data wire.
  • the EPB and WSS Control Module 7 delivers DC voltage to the EPB’s DC motor through the EBP power and ground wires, which, in turn, by using an EPB gear train and spindle piston, activates the wheel’ s braking pads.
  • the conductive bridge 9 may take the form of an insulated ware or an uninsulated wire. According to alternative embodiments, the conductive bridge 9 may take the form of a part of an external housing, which houses the EPB and WSS.
  • the conductive bridge 9 may be a metallic (or other conductive part) portion of a housing that houses the EPB and WSS.
  • the conductive bridge may be a metallic portion of the under carriage of the automobile to which the EPB and WSS are mounted.
  • the conductive bridge 9 may be built into an electronic device (e.g., a circuit board) that includes additional functional elements (e.g., inductors, capacitors, etc.).
  • the three-wire cable system of the present disclosure provides the advantages of reducing the costs associated with mass production of EBP and WSS cables as well as reducing the weight of cabling necessary to run the W'SS and EPB, which reduces the weight of the final product (e.g., vehicle). These advantages are realized at least in part based upon the use of three wires, as compared to four wires, which are routinely used in the industry. This means that the cable’s final weight (e.g., the weight per unit of length) is reduced by at least by the weight of a single wire as compared to contemporary load/data cables; and its specific manufacturing cost are similarly reduced. The cost reduction may be even greater because of additional reduction of associated assembly costs.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Insulated Conductors (AREA)

Abstract

L'invention concerne un câble à trois fils pour connecter un frein de stationnement électrique (EPB) et un capteur de vitesse de roue (WSS) au module de commande EPB et WSS du véhicule. Un fil commun est utilisé comme fil de mise à la terre à la fois pour l'EPB et le WSS conjointement avec un pont conducteur connectant l'EPB et le WSS.
PCT/IB2019/000082 2019-01-23 2019-01-23 Système de connexion et câble pour connecter un epb et des ws WO2020152494A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2019/000082 WO2020152494A1 (fr) 2019-01-23 2019-01-23 Système de connexion et câble pour connecter un epb et des ws

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2019/000082 WO2020152494A1 (fr) 2019-01-23 2019-01-23 Système de connexion et câble pour connecter un epb et des ws

Publications (1)

Publication Number Publication Date
WO2020152494A1 true WO2020152494A1 (fr) 2020-07-30

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PCT/IB2019/000082 WO2020152494A1 (fr) 2019-01-23 2019-01-23 Système de connexion et câble pour connecter un epb et des ws

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2850911A1 (fr) * 2003-02-07 2004-08-13 Peugeot Citroen Automobiles Sa Procede et systeme de gestion de l'etat et du fonctionnement d'un vehicule automobile
CN203103011U (zh) * 2012-12-24 2013-07-31 宝鸡烽火电线电缆有限责任公司 物联网现场总线电缆
DE112016003911T5 (de) * 2015-08-31 2018-05-09 Hitachi Automotive Systems, Ltd. Bedienschalter und Handbremsensteuervorrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2850911A1 (fr) * 2003-02-07 2004-08-13 Peugeot Citroen Automobiles Sa Procede et systeme de gestion de l'etat et du fonctionnement d'un vehicule automobile
CN203103011U (zh) * 2012-12-24 2013-07-31 宝鸡烽火电线电缆有限责任公司 物联网现场总线电缆
DE112016003911T5 (de) * 2015-08-31 2018-05-09 Hitachi Automotive Systems, Ltd. Bedienschalter und Handbremsensteuervorrichtung

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