WO2018008357A1 - Rotary connector - Google Patents

Rotary connector Download PDF

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Publication number
WO2018008357A1
WO2018008357A1 PCT/JP2017/022182 JP2017022182W WO2018008357A1 WO 2018008357 A1 WO2018008357 A1 WO 2018008357A1 JP 2017022182 W JP2017022182 W JP 2017022182W WO 2018008357 A1 WO2018008357 A1 WO 2018008357A1
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WIPO (PCT)
Prior art keywords
magnetic field
rotating body
rotary connector
communication data
communication
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PCT/JP2017/022182
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French (fr)
Japanese (ja)
Inventor
慶治 村瀬
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株式会社東海理化電機製作所
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Publication of WO2018008357A1 publication Critical patent/WO2018008357A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/027—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems between relatively movable parts of the vehicle, e.g. between steering wheel and column
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/18—Rotary transformers

Definitions

  • the present invention relates to a rotating connector that improves communication between a fixed body and a rotating body.
  • a steering roll connector is widely known as a rotary connector that maintains electrical conduction between two parts that rotate with respect to the other.
  • a steering roll connector for example, a device that transmits communication data from a rotating body to a stationary body through optical communication in a non-contact manner is well known (see Patent Documents 1 and 2, etc.).
  • An object of the present invention is to provide a rotary connector capable of reducing the apparatus size.
  • the rotary connector is configured such that communication between the rotating body rotatable with respect to the fixed body and the fixed body is non-contact communication, and rotation of the rotating body is allowed and the rotating body is allowed to rotate.
  • a magnetic field generator provided in one of the fixed body and the rotating body and formed in an annular shape around the axis of the rotating body; the fixed body and the rotating body;
  • a magnetic field detector provided on the other side of the moving body and capable of detecting a magnetic field output from the magnetic field generator in a communication data pattern; and the communication data transmitted through the magnetic field based on a detection signal of the magnetic field detector.
  • a signal processing unit for obtaining the signal.
  • the non-contact communication between the fixed body and the rotating body is performed through the magnetic field generated from the magnetic field generator formed in an annular shape around the axis of the rotating body. Regardless of this, communication between the fixed body and the rotating body can be established by the magnetic field generated stably. Thereby, non-contact communication can be realized in a small space. Therefore, it is possible to reduce the device size in the rotary connector.
  • the magnetic field generation unit is formed from a wiring pattern formed on a substrate.
  • the magnetic field generation unit may be a simple structure such as a wiring pattern on the substrate.
  • the magnetic field detection unit is disposed at a position facing an end position of a coil surface of the magnetic field generation unit. According to this configuration, the magnetic field output from the magnetic field generation unit can be applied to the detection surface of the magnetic field detection unit in an optimal direction. Therefore, it is advantageous to establish non-contact communication by a magnetic field with certainty.
  • the communication data is a multiplexed signal in which signals output from a plurality of detection units are collected in a time division manner and transmitted to the other side. According to this configuration, it is possible to efficiently transmit the outputs of the plurality of detection units to the other party using multiple signals.
  • the magnetic field generation unit constructs the binarized information of the communication data based on the presence or absence of a magnetic field. According to this configuration, the binarization information of the communication data can be constructed by a simple process of outputting or not outputting the magnetic field from the magnetic field generation unit.
  • the apparatus size can be reduced.
  • the block diagram of the rotation connector of one Embodiment The electrical block diagram of a rotation connector. Explanatory drawing which shows the relationship between the binary value of communication data, and a magnetic field generation timing. The schematic diagram which shows the direction of the magnetic field concerning a magnetic field detection part.
  • a vehicular rotary connector 1 is attached between a vehicle body 2 on a fixed side and a steering shaft 3 on a rotating side.
  • the rotary connector 1 uses communication between the vehicle body 2 and the steering shaft 3 as non-contact communication, and maintains communication between these two members even when the steering shaft 3 is rotated.
  • the rotary connector 1 transmits the output signal Sout of the detection unit 4 provided on the steering wheel (not shown) to the controller 5 on the vehicle body 2 side.
  • the controller 5 includes an ECU (Electronic Control Unit) that manages the operation of the rotary connector 1, and determines the detection state of the detection unit 4 based on the output signal Sout.
  • ECU Electronic Control Unit
  • the detection unit 4 includes, for example, a switch and a sensor disposed on the steering wheel.
  • the output signal Sout is not limited to an on / off signal detected by, for example, a switch or a sensor, but may be a data signal detected by sensors such as an image sensor.
  • the rotary connector 1 includes a fixed body 8 attached and fixed to the vehicle body 2 and a rotating body 9 that rotates with respect to the fixed body 8. Both the fixed body 8 and the rotating body 9 have a substantially disc shape and are disposed on the same axis (axis L1).
  • the axis L1 is the rotational axis of the steering shaft 3.
  • the fixed body 8 includes a substrate 12 on which electrical components on the fixed body 8 side are mounted.
  • the steering shaft 3 is rotatably inserted through insertion holes 13 and 14 formed at the centers of the fixed body 8 and the substrate 12.
  • the rotating body 9 includes a substrate 15 on which electrical components on the rotating body 9 side are mounted.
  • the steering shaft 3 is inserted into the insertion holes 16 and 17 formed at the centers of the rotating body 9 and the substrate 15 so that they can be integrally rotated.
  • the rotating body 9 is supported by the fixed body 8 and rotates integrally with the steering shaft 3 around the axis L1.
  • the rotary connector 1 adopts a magnetic communication system that notifies a signal transmitted between the fixed body 8 and the rotating body 9 to the other side through a magnetic field.
  • the magnetic communication system of this example is a system that wirelessly transmits the output signal Sout of the detection unit 4 on the steering wheel side as communication data Sd from the rotating body 9 side to the fixed body 8 side through a magnetic field.
  • the communication data Sd constructs binarized information composed of data groups of “0” and “1” by a combination of “present” and “absent” magnetic fields. Further, the communication data Sd is preferably a multiplexed signal in which signals output from the plurality of detection units 4 are collected in a time division manner and transmitted to the other party.
  • the rotary connector 1 includes a magnetic field generator 20 formed in an annular shape around the axis L1 of the rotating body 9 (in the direction of arrow R in FIG. 1).
  • the magnetic field generation unit 20 of this example is formed of an annular wiring pattern provided on the substrate 15 and generates a magnetic field according to the communication data Sd.
  • the wiring pattern is a wiring (board wiring) mounted on the substrate 15, and is formed in an annular shape around the axis L ⁇ b> 1 of the rotating body 9.
  • the rotary connector 1 includes a magnetic field detector 21 that can detect the magnetic field output from the magnetic field generator 20 in the pattern of the communication data Sd.
  • the magnetic field detector 21 is preferably a magnetic sensor IC made of, for example, an MRE sensor.
  • the magnetic field detector 21 includes a detection surface 22 that detects a magnetic field.
  • the detection surface 22 is disposed in parallel with the coil surface 23 of the magnetic field generator 20.
  • the magnetic field detector 21 is disposed below the magnetic field generator 20, that is, at a position facing the end position of the coil surface 23 of the magnetic field generator 20.
  • the magnetic field detection unit 21 outputs a detection signal St corresponding to the detection magnetic field by changing the resistance due to the magnetic field applied from the magnetic field generation unit 20 and binarizing the change.
  • the rotary connector 1 includes an output processing unit 26 that controls the operation of the magnetic field generation unit 20.
  • the output processing unit 26 is preferably an IC provided on the rotating body 9 and mounted on the substrate 15, for example.
  • the output processing unit 26 generates a magnetic field in accordance with the binarization information of the communication data Sd from the magnetic field generation unit 20 by switching the process of flowing or not flowing a current through the wiring pattern that is the magnetic field generation unit 20.
  • the rotary connector 1 includes a signal processing unit 27 that acquires communication data Sd from the transmission side (in this example, the output signal Sout of the detection unit 4) based on the detection signal St of the magnetic field detection unit 21.
  • the signal processing unit 27 is provided in the controller 5.
  • the signal processing unit 27 determines the data content of the communication data Sd based on the detection signal St input from the magnetic field detection unit 21, and executes an operation according to the communication data Sd.
  • an output signal Sout is input from the detection unit 4 to the output processing unit 26.
  • the output processing unit 26 outputs the communication data Sd to be output at this time to the fixed body 8 through the presence or absence of a magnetic field.
  • the output processing unit 26 outputs a magnetic field from the magnetic field generation unit 20 by causing a current to flow through the magnetic field generation unit 20 (wiring pattern), for example, when outputting binary information equivalent to “1”.
  • the magnetic field generation unit 20 constructs the binarized information of the communication data Sd based on the presence or absence of the magnetic field, and transmits the communication data Sd to the fixed body 8 side.
  • the magnetic field output from the magnetic field generator 20 is radiated straight in the coil axial direction La at the center of the coil surface 23, and changes in the outward direction as the distance from the center of the coil surface 23 increases.
  • the magnetic field detection part 21 is arrange
  • the magnetic field detection unit 21 changes the magnetic resistance according to the presence or absence of a magnetic field, and outputs a detection signal St corresponding to the change to the controller 5 (signal processing unit 27). That is, the magnetic field detection unit 21 binarizes the detected magnetic field into “0” and “1” from the resistance value change, and outputs this binarized information to the signal processing unit 27 as the detection signal St.
  • the signal processing unit 27 recognizes the detection state of the detection unit 4 (switch or sensor) of the steering wheel based on the detection signal St acquired from the magnetic field detection unit 21.
  • non-contact communication between the fixed body 8 and the rotating body 9 is performed through a magnetic field generated from the magnetic field generating unit 20 formed in an annular shape around the axis L1 of the rotating body 9. Communication between the fixed body 8 and the rotating body 9 can be established by a magnetic field generated stably regardless of the rotating position of the rotating body 9. Thereby, non-contact communication can be realized in a small space. Therefore, the device size of the rotary connector 1 can be reduced. Also, complicated antenna design such as radio wave communication can be eliminated.
  • the magnetic field generator 20 is formed of a wiring pattern formed on the substrate 15 and is formed in a circumferential shape (in this example, an annular shape) around the axis L1 of the rotating body 9. Therefore, the magnetic field generator 20 can be a simple structure called a wiring pattern of the substrate 15.
  • the magnetic field detector 21 is disposed at a position facing the end position of the coil surface 23 of the magnetic field generator 20. For this reason, the magnetic field output from the magnetic field generation unit 20 can be applied to the detection surface 22 of the magnetic field detection unit 21 in an optimal direction. Therefore, it is advantageous to establish non-contact communication by a magnetic field with certainty.
  • the communication data Sd is a multiplexed signal in which signals output from the plurality of detection units 4 are collected in a time division manner and transmitted to the other party. Therefore, the output of the some detection part 4 can be efficiently transmitted to the other party (controller 5) by a multiplexed signal.
  • the magnetic field generator 20 constructs binarized information of the communication data Sd depending on the presence or absence of a magnetic field. Therefore, the binarized information of the communication data Sd can be constructed by a simple process of outputting the magnetic field from the magnetic field generator 20 and not outputting it.
  • the binarization information may be, for example, “0” when there is a magnetic field and “1” when there is no magnetic field.
  • the magnetic field generator 20 is not limited to the substrate wiring, and may be a coil member, for example.
  • the magnetic field generator 20 (wiring pattern) may be an annular shape and is not limited to an annular shape.
  • the magnetic field generator 20 is not limited to being constructed from the wiring pattern of the substrate 15 and may be any member that can generate a magnetic field.
  • the magnetic field detection unit 21 is not limited to the MRE sensor, and can be changed to another member such as a Hall IC, for example. -The magnetic field detection part 21 should just be arrange
  • the communication data Sd is not limited to a multiplexed signal, and may be data constructed only from the output of one detection unit 4.
  • the rotation connector 1 is not limited to being applied to a vehicle, You may use it for another apparatus and apparatus.

Abstract

A rotary connector (1) is provided with: a magnetic field generation section (20) which is provided in one of a fixing member (8) and a rotating member (9), and which is formed in an annular shape around a rotating member axis (L1); a magnetic field detection section (21) which is provided in the other of the fixing member and the rotating member, and which is able to detect a magnetic field output from the magnetic field generation section in a communication data pattern; and a signal processing section (5) which, on the basis of a detection signal (St) from the magnetic field detection section, acquires communication data transmitted via the magnetic field.

Description

回転コネクタRotating connector
　本発明は、固定体及び回動体の間の通信を向上する回転コネクタに関する。 The present invention relates to a rotating connector that improves communication between a fixed body and a rotating body.
　従来、一方が他方に対して回転する２部品の間の電気的な通電を維持する回転コネクタとして、ステアリングロールコネクタが広く知られている。この種のステアリングロールコネクタには、例えば光通信を通じて非接触で通信データを回動体から固定体に送信するものが周知である（特許文献１，２等参照）。 Conventionally, a steering roll connector is widely known as a rotary connector that maintains electrical conduction between two parts that rotate with respect to the other. As this type of steering roll connector, for example, a device that transmits communication data from a rotating body to a stationary body through optical communication in a non-contact manner is well known (see Patent Documents 1 and 2, etc.).
特開２００３－２４１００３号公報JP 2003-241003 A 特開昭５９－１８８７９９号公報JP 59-188799 A
　しかし、光通信型の回転コネクタでは、回転位置によらない安定した通信を維持するために、発光素子を複数設けたり、導光板を設けたりする必要があった。よって、部品点数が多くなる傾向があり、装置小型化に支障を来していた。 However, in the optical communication type rotary connector, it is necessary to provide a plurality of light emitting elements or a light guide plate in order to maintain stable communication regardless of the rotation position. Therefore, the number of parts tends to increase, which hinders downsizing of the apparatus.
　本発明の目的は、装置サイズを小型化することができる回転コネクタを提供することにある。 An object of the present invention is to provide a rotary connector capable of reducing the apparatus size.
　一態様の回転コネクタは、固定体に対して回動可能な回動体と当該固定体との通信を非接触通信とし、前記回動体の回動を許容した状態下においての前記固定体及び前記回動体の間の通信を可能にする構成において、前記固定体及び前記回動体の一方に設けられ、前記回動体の軸回りに沿って環状に形成された磁界発生部と、前記固定体及び前記回動体の他方に設けられ、前記磁界発生部から通信データのパターンで出力された磁界を検出可能な磁界検出部と、前記磁界検出部の検出信号を基に、前記磁界を通じて送信された前記通信データを取得する信号処理部とを備えた。 The rotary connector according to one aspect is configured such that communication between the rotating body rotatable with respect to the fixed body and the fixed body is non-contact communication, and rotation of the rotating body is allowed and the rotating body is allowed to rotate. In a configuration that enables communication between moving bodies, a magnetic field generator provided in one of the fixed body and the rotating body and formed in an annular shape around the axis of the rotating body; the fixed body and the rotating body; A magnetic field detector provided on the other side of the moving body and capable of detecting a magnetic field output from the magnetic field generator in a communication data pattern; and the communication data transmitted through the magnetic field based on a detection signal of the magnetic field detector. And a signal processing unit for obtaining the signal.
　本構成によれば、固定体及び回動体の間の非接触の通信を、回動体の軸回りに沿って環状に形成された磁界発生部から発生する磁界を通じて行うので、回動体の回動位置によらず安定して発生する磁界により、固定体及び回動体の間の通信を確立させることが可能となる。これにより、小スペースで非接触の通信を実現することが可能となる。よって、回転コネクタにおいて装置サイズを小型化することが可能となる。 According to this configuration, the non-contact communication between the fixed body and the rotating body is performed through the magnetic field generated from the magnetic field generator formed in an annular shape around the axis of the rotating body. Regardless of this, communication between the fixed body and the rotating body can be established by the magnetic field generated stably. Thereby, non-contact communication can be realized in a small space. Therefore, it is possible to reduce the device size in the rotary connector.
　前記回転コネクタにおいて、前記磁界発生部は、基板に形成された配線パターンから形成されていることが好ましい。この構成によれば、磁界発生部が基板の配線パターンという簡素な構造で済む。 In the rotary connector, it is preferable that the magnetic field generation unit is formed from a wiring pattern formed on a substrate. According to this configuration, the magnetic field generation unit may be a simple structure such as a wiring pattern on the substrate.
　前記回転コネクタにおいて、前記磁界検出部は、前記磁界発生部のコイル面の端位置と対向する位置に配置されていることが好ましい。この構成によれば、磁界発生部から出力される磁界を、最適な方向で磁界検出部の検知面に付与することが可能となる。よって、確実に磁界による非接触通信を確立させるのに有利となる。 In the rotary connector, it is preferable that the magnetic field detection unit is disposed at a position facing an end position of a coil surface of the magnetic field generation unit. According to this configuration, the magnetic field output from the magnetic field generation unit can be applied to the detection surface of the magnetic field detection unit in an optimal direction. Therefore, it is advantageous to establish non-contact communication by a magnetic field with certainty.
　前記回転コネクタにおいて、前記通信データは、複数の検知部から出力される信号を時分割によりまとめて相手側に送信する多重信号であることが好ましい。この構成によれば、複数の検知部の出力を、多重信号により効率よく相手側に送信することが可能となる。 In the rotary connector, it is preferable that the communication data is a multiplexed signal in which signals output from a plurality of detection units are collected in a time division manner and transmitted to the other side. According to this configuration, it is possible to efficiently transmit the outputs of the plurality of detection units to the other party using multiple signals.
　前記回転コネクタにおいて、前記磁界発生部は、磁界の有り無しによって前記通信データの２値化情報を構築することが好ましい。この構成によれば、磁界発生部から磁界を出力する、又は出力しないという簡素な処理により、通信データの２値化情報を構築することが可能となる。 In the rotary connector, it is preferable that the magnetic field generation unit constructs the binarized information of the communication data based on the presence or absence of a magnetic field. According to this configuration, the binarization information of the communication data can be constructed by a simple process of outputting or not outputting the magnetic field from the magnetic field generation unit.
　本発明によれば、装置サイズを小型化することができる。 According to the present invention, the apparatus size can be reduced.
一実施形態の回転コネクタの構成図。The block diagram of the rotation connector of one Embodiment. 回転コネクタの電気構成図。The electrical block diagram of a rotation connector. 通信データの２値と磁界発生タイミングとの関係を示す説明図。Explanatory drawing which shows the relationship between the binary value of communication data, and a magnetic field generation timing. 磁界検出部にかかる磁界の向きを示す模式図。The schematic diagram which shows the direction of the magnetic field concerning a magnetic field detection part.
　以下、回転コネクタの一実施形態を図１～図４に従って説明する。
　図１に示すように、車両用の回転コネクタ１は、固定側となる車体２と回動側となるステアリングシャフト３との間に取り付けられている。回転コネクタ１は、車体２及びステアリングシャフト３の間の通信を非接触通信として、これら２者間の通信をステアリングシャフト３が回動されても維持するものである。回転コネクタ１は、ステアリングホイール（図示略）に設けられた検知部４の出力信号Ｓoutを、車体２側のコントローラ５に送信する。コントローラ５は、回転コネクタ１の作動を管理するＥＣＵ（Electronic Control Unit）からなり、出力信号Ｓoutを基に検知部４の検知状態を判断する。 Hereinafter, an embodiment of a rotary connector will be described with reference to FIGS.
As shown in FIG. 1, a vehicular rotary connector 1 is attached between a vehicle body 2 on a fixed side and a steering shaft 3 on a rotating side. The rotary connector 1 uses communication between the vehicle body 2 and the steering shaft 3 as non-contact communication, and maintains communication between these two members even when the steering shaft 3 is rotated. The rotary connector 1 transmits the output signal Sout of the detection unit 4 provided on the steering wheel (not shown) to the controller 5 on the vehicle body 2 side. The controller 5 includes an ECU (Electronic Control Unit) that manages the operation of the rotary connector 1, and determines the detection state of the detection unit 4 based on the output signal Sout.
　検知部４は、例えばステアリングホイールに配設されたスイッチやセンサ等からなる。また、出力信号Ｓoutは、例えばスイッチやセンサにより検出されたオンオフ信号に限らず、例えば画像センサ等のセンサ類が検出したデータ信号でもよい。 The detection unit 4 includes, for example, a switch and a sensor disposed on the steering wheel. The output signal Sout is not limited to an on / off signal detected by, for example, a switch or a sensor, but may be a data signal detected by sensors such as an image sensor.
　回転コネクタ１は、車体２に取り付け固定される固定体８と、固定体８に対して回動する回動体９とを備える。固定体８及び回動体９は、ともに略円板形状をなし、同一軸心（軸Ｌ１）上に配置されている。軸Ｌ１は、ステアリングシャフト３の回動軸心である。 The rotary connector 1 includes a fixed body 8 attached and fixed to the vehicle body 2 and a rotating body 9 that rotates with respect to the fixed body 8. Both the fixed body 8 and the rotating body 9 have a substantially disc shape and are disposed on the same axis (axis L1). The axis L1 is the rotational axis of the steering shaft 3.
　固定体８は、固定体８側の電装品が実装される基板１２を備える。ステアリングシャフト３は、固定体８及び基板１２の各々の中心に形成された挿通孔１３，１４に回動可能に挿通されている。回動体９は、回動体９側の電装品が実装される基板１５を備える。回動体９及び基板１５の各々の中心に形成された挿通孔１６，１７には、ステアリングシャフト３が挿通されて、これらが一体回動可能となっている。ステアリングシャフト３が回動操作されたとき、回動体９は、固定体８に支持されてステアリングシャフト３と軸Ｌ１回りに一体回動する。 The fixed body 8 includes a substrate 12 on which electrical components on the fixed body 8 side are mounted. The steering shaft 3 is rotatably inserted through insertion holes 13 and 14 formed at the centers of the fixed body 8 and the substrate 12. The rotating body 9 includes a substrate 15 on which electrical components on the rotating body 9 side are mounted. The steering shaft 3 is inserted into the insertion holes 16 and 17 formed at the centers of the rotating body 9 and the substrate 15 so that they can be integrally rotated. When the steering shaft 3 is rotated, the rotating body 9 is supported by the fixed body 8 and rotates integrally with the steering shaft 3 around the axis L1.
　回転コネクタ１は、固定体８及び回動体９の間で通信する信号を、磁界を通じて相手側に通知する磁気型の通信方式をとる。本例の磁気型の通信方式は、ステアリングホイール側の検知部４の出力信号Ｓoutを、磁界を通じて、通信データＳｄとして回動体９側から固定体８側に無線送信する方式である。通信データＳｄは、磁界の「有り」及び「無し」の組み合わせにより、「０」及び「１」のデータ群からなる２値化情報を構築する。また、通信データＳｄは、複数の検知部４から出力される信号を時分割によりまとめて相手側に送信する多重信号であることが好ましい。 The rotary connector 1 adopts a magnetic communication system that notifies a signal transmitted between the fixed body 8 and the rotating body 9 to the other side through a magnetic field. The magnetic communication system of this example is a system that wirelessly transmits the output signal Sout of the detection unit 4 on the steering wheel side as communication data Sd from the rotating body 9 side to the fixed body 8 side through a magnetic field. The communication data Sd constructs binarized information composed of data groups of “0” and “1” by a combination of “present” and “absent” magnetic fields. Further, the communication data Sd is preferably a multiplexed signal in which signals output from the plurality of detection units 4 are collected in a time division manner and transmitted to the other party.
　回転コネクタ１は、回動体９の軸Ｌ１回り（図１の矢印Ｒ方向）に沿って環状に形成された磁界発生部２０を備える。本例の磁界発生部２０は、基板１５に設けられた環状の配線パターンからなり、通信データＳｄに応じた磁界を発生する。配線パターンは、基板１５に実装された配線（基板配線）であって、回動体９の軸Ｌ１回りに沿って円環状に形成されている。 The rotary connector 1 includes a magnetic field generator 20 formed in an annular shape around the axis L1 of the rotating body 9 (in the direction of arrow R in FIG. 1). The magnetic field generation unit 20 of this example is formed of an annular wiring pattern provided on the substrate 15 and generates a magnetic field according to the communication data Sd. The wiring pattern is a wiring (board wiring) mounted on the substrate 15, and is formed in an annular shape around the axis L <b> 1 of the rotating body 9.
　回転コネクタ１は、磁界発生部２０から通信データＳｄのパターンで出力された磁界を検出可能な磁界検出部２１を備える。磁界検出部２１は、例えばＭＲＥセンサ等からなる磁気センサＩＣであることが好ましい。磁界検出部２１は、磁界を検知する検知面２２を含む。この検知面２２は、磁界発生部２０のコイル面２３と平行に配置されている。磁界検出部２１は、磁界発生部２０の下側、すなわち磁界発生部２０のコイル面２３の端位置と対向する位置に配置されている。磁界検出部２１は、磁界発生部２０から付与される磁界により抵抗が変化し、その変化を２値化することにより、検出磁界に応じた検出信号Ｓｔを出力する。 The rotary connector 1 includes a magnetic field detector 21 that can detect the magnetic field output from the magnetic field generator 20 in the pattern of the communication data Sd. The magnetic field detector 21 is preferably a magnetic sensor IC made of, for example, an MRE sensor. The magnetic field detector 21 includes a detection surface 22 that detects a magnetic field. The detection surface 22 is disposed in parallel with the coil surface 23 of the magnetic field generator 20. The magnetic field detector 21 is disposed below the magnetic field generator 20, that is, at a position facing the end position of the coil surface 23 of the magnetic field generator 20. The magnetic field detection unit 21 outputs a detection signal St corresponding to the detection magnetic field by changing the resistance due to the magnetic field applied from the magnetic field generation unit 20 and binarizing the change.
　図２に示すように、回転コネクタ１は、磁界発生部２０の作動を制御する出力処理部２６を備える。出力処理部２６は、回動体９に設けられ、例えば基板１５に実装されたＩＣであることが好ましい。出力処理部２６は、磁界発生部２０である配線パターンに電流を流す、又は流さないという処理を切り替えることにより、磁界発生部２０から通信データＳｄの２値化情報に準じた磁界を発生させる。 As shown in FIG. 2, the rotary connector 1 includes an output processing unit 26 that controls the operation of the magnetic field generation unit 20. The output processing unit 26 is preferably an IC provided on the rotating body 9 and mounted on the substrate 15, for example. The output processing unit 26 generates a magnetic field in accordance with the binarization information of the communication data Sd from the magnetic field generation unit 20 by switching the process of flowing or not flowing a current through the wiring pattern that is the magnetic field generation unit 20.
　回転コネクタ１は、磁界検出部２１の検出信号Ｓｔを基に送信側からの通信データＳｄ（本例は検知部４の出力信号Ｓout）を取得する信号処理部２７を備える。信号処理部２７は、コントローラ５に設けられている。信号処理部２７は、磁界検出部２１から入力する検出信号Ｓｔを基に通信データＳｄのデータ内容を判断し、この通信データＳｄに応じた作動を実行する。 The rotary connector 1 includes a signal processing unit 27 that acquires communication data Sd from the transmission side (in this example, the output signal Sout of the detection unit 4) based on the detection signal St of the magnetic field detection unit 21. The signal processing unit 27 is provided in the controller 5. The signal processing unit 27 determines the data content of the communication data Sd based on the detection signal St input from the magnetic field detection unit 21, and executes an operation according to the communication data Sd.
　次に、図３及び図４を用いて、回転コネクタ１の作用及び効果を説明する。
　図３に示すように、例えばステアリングホイールにおいて検知部４で種々の操作が検出されたとき、検知部４から出力信号Ｓoutが出力処理部２６に入力される。出力処理部２６は、このときに出力すべき通信データＳｄを、磁界の有無を通じて固定体８側に出力する。本例の場合、出力処理部２６は、例えば２値化情報の「１」相当を出力するとき、磁界発生部２０（配線パターン）に電流を流すことで、磁界発生部２０から磁界を出し、２値化情報の「０」相当を出力するとき、磁界発生部２０（配線パターン）に電流を流さないことで、磁界発生部２０から磁界を出さない。このように、磁界発生部２０は、磁界の有無により通信データＳｄの２値化情報を構築して通信データＳｄを固定体８側に送信する。 Next, the operation and effect of the rotary connector 1 will be described with reference to FIGS. 3 and 4.
As shown in FIG. 3, for example, when various operations are detected by the detection unit 4 in the steering wheel, an output signal Sout is input from the detection unit 4 to the output processing unit 26. The output processing unit 26 outputs the communication data Sd to be output at this time to the fixed body 8 through the presence or absence of a magnetic field. In the case of this example, the output processing unit 26 outputs a magnetic field from the magnetic field generation unit 20 by causing a current to flow through the magnetic field generation unit 20 (wiring pattern), for example, when outputting binary information equivalent to “1”. When outputting the binary information equivalent to “0”, no magnetic field is generated from the magnetic field generation unit 20 by not passing a current through the magnetic field generation unit 20 (wiring pattern). As described above, the magnetic field generation unit 20 constructs the binarized information of the communication data Sd based on the presence or absence of the magnetic field, and transmits the communication data Sd to the fixed body 8 side.
　図４に示すように、磁界発生部２０から出力される磁界は、コイル面２３の中心においてコイル軸方向Ｌａに真っ直ぐ放射され、コイル面２３の中心から離れるに従って外側に向きを変えていく放射方向をとる。また、磁界検出部２１は、磁界発生部２０（配線パターン）のコイル面２３の端位置と対向する位置に配置される。このため、磁界発生部２０から出力された磁界は、磁界検出部２１の検知面２２に対し、平行する向きにかかる。よって、検知面２２に最適な方向で磁界を付与することができ、磁界検出部２１の検知精度が向上される。 As shown in FIG. 4, the magnetic field output from the magnetic field generator 20 is radiated straight in the coil axial direction La at the center of the coil surface 23, and changes in the outward direction as the distance from the center of the coil surface 23 increases. Take. Moreover, the magnetic field detection part 21 is arrange | positioned in the position facing the edge position of the coil surface 23 of the magnetic field generation part 20 (wiring pattern). For this reason, the magnetic field output from the magnetic field generation unit 20 is applied in a direction parallel to the detection surface 22 of the magnetic field detection unit 21. Therefore, the magnetic field can be applied to the detection surface 22 in the optimum direction, and the detection accuracy of the magnetic field detector 21 is improved.
　磁界検出部２１は、磁界の有無に応じて磁気抵抗が変化し、その変化に応じた検出信号Ｓｔをコントローラ５（信号処理部２７）に出力する。すなわち、磁界検出部２１は、抵抗値変化から検出磁界を「０」及び「１」に２値化し、この２値化情報を検出信号Ｓｔとして信号処理部２７に出力する。信号処理部２７は、磁界検出部２１から取得した検出信号Ｓｔを基に、ステアリングホイールの検知部４（スイッチやセンサ）の検知状態を認識する。 The magnetic field detection unit 21 changes the magnetic resistance according to the presence or absence of a magnetic field, and outputs a detection signal St corresponding to the change to the controller 5 (signal processing unit 27). That is, the magnetic field detection unit 21 binarizes the detected magnetic field into “0” and “1” from the resistance value change, and outputs this binarized information to the signal processing unit 27 as the detection signal St. The signal processing unit 27 recognizes the detection state of the detection unit 4 (switch or sensor) of the steering wheel based on the detection signal St acquired from the magnetic field detection unit 21.
　さて、本例の場合、固定体８及び回動体９の間の非接触の通信を、回動体９の軸Ｌ１回りに沿って環状に形成された磁界発生部２０から発生する磁界を通じて行うので、回動体９の回動位置によらず安定して発生する磁界により、固定体８及び回動体９の間の通信を確立させることが可能となる。これにより、小スペースで非接触の通信を実現することが可能となる。よって、回転コネクタ１において装置サイズを小型化することができる。また、電波通信のような複雑なアンテナ設計も不要にすることができる。 In the case of this example, non-contact communication between the fixed body 8 and the rotating body 9 is performed through a magnetic field generated from the magnetic field generating unit 20 formed in an annular shape around the axis L1 of the rotating body 9. Communication between the fixed body 8 and the rotating body 9 can be established by a magnetic field generated stably regardless of the rotating position of the rotating body 9. Thereby, non-contact communication can be realized in a small space. Therefore, the device size of the rotary connector 1 can be reduced. Also, complicated antenna design such as radio wave communication can be eliminated.
　磁界発生部２０は、基板１５に形成された配線パターンから形成されるとともに、回動体９の軸Ｌ１回りに沿って周状（本例は円環状）に形成されている。よって、磁界発生部２０が基板１５の配線パターンという簡素な構造で済む。 The magnetic field generator 20 is formed of a wiring pattern formed on the substrate 15 and is formed in a circumferential shape (in this example, an annular shape) around the axis L1 of the rotating body 9. Therefore, the magnetic field generator 20 can be a simple structure called a wiring pattern of the substrate 15.
　磁界検出部２１は、磁界発生部２０のコイル面２３の端位置と対向する位置に配置されている。このため、磁界発生部２０から出力される磁界を、最適な方向で磁界検出部２１の検知面２２に付与することが可能となる。よって、確実に磁界による非接触通信を確立させるのに有利となる。 The magnetic field detector 21 is disposed at a position facing the end position of the coil surface 23 of the magnetic field generator 20. For this reason, the magnetic field output from the magnetic field generation unit 20 can be applied to the detection surface 22 of the magnetic field detection unit 21 in an optimal direction. Therefore, it is advantageous to establish non-contact communication by a magnetic field with certainty.
　通信データＳｄは、複数の検知部４から出力される信号を時分割によりまとめて相手側に送信する多重信号である。よって、複数の検知部４の出力を、多重信号により効率よく相手側（コントローラ５）に送信することができる。 The communication data Sd is a multiplexed signal in which signals output from the plurality of detection units 4 are collected in a time division manner and transmitted to the other party. Therefore, the output of the some detection part 4 can be efficiently transmitted to the other party (controller 5) by a multiplexed signal.
　磁界発生部２０は、磁界の有り無しによって通信データＳｄの２値化情報を構築する。よって、磁界発生部２０から磁界を出力する、出力しないという簡素な処理により、通信データＳｄの２値化情報を構築することができる。 The magnetic field generator 20 constructs binarized information of the communication data Sd depending on the presence or absence of a magnetic field. Therefore, the binarized information of the communication data Sd can be constructed by a simple process of outputting the magnetic field from the magnetic field generator 20 and not outputting it.
　なお、実施形態はこれまでに述べた構成に限らず、以下の態様に変更してもよい。
　・２値化情報は、例えば磁界があるときを「０」とし、磁界がないときを「１」としてもよい。 Note that the embodiment is not limited to the configuration described so far, and may be modified as follows.
The binarization information may be, for example, “0” when there is a magnetic field and “1” when there is no magnetic field.
　・磁界発生部２０は、基板配線に限定されず、例えばコイル部材としてもよい。
　・磁界発生部２０（配線パターン）は、環状であればよく、円環状のみに限定されない。
　・磁界発生部２０は、基板１５の配線パターンから構築されることに限らず、磁界を発生できる部材であればよい。 The magnetic field generator 20 is not limited to the substrate wiring, and may be a coil member, for example.
The magnetic field generator 20 (wiring pattern) may be an annular shape and is not limited to an annular shape.
The magnetic field generator 20 is not limited to being constructed from the wiring pattern of the substrate 15 and may be any member that can generate a magnetic field.
　・磁界検出部２１は、ＭＲＥセンサに限定されず、例えばホールＩＣなどの他の部材に変更可能である。
　・磁界検出部２１は、磁界発生部２０から出力される磁界を検出できる位置に配置されていればよい。 The magnetic field detection unit 21 is not limited to the MRE sensor, and can be changed to another member such as a Hall IC, for example.
-The magnetic field detection part 21 should just be arrange | positioned in the position which can detect the magnetic field output from the magnetic field generation part 20. FIG.
　・通信データＳｄは、多重信号に限定されず、１つの検知部４の出力のみから構築されるデータでもよい。
　・回転コネクタ１は、車両に適用されることに限定されず、他の機器や装置に使用してもよい。 The communication data Sd is not limited to a multiplexed signal, and may be data constructed only from the output of one detection unit 4.
-The rotation connector 1 is not limited to being applied to a vehicle, You may use it for another apparatus and apparatus.

Claims (5)

  1. 　固定体に対して回動可能な回動体と当該固定体との通信を非接触通信とし、前記回動体の回動を許容した状態下においての前記固定体及び前記回動体の間の通信を可能にする回転コネクタにおいて、
    　前記固定体及び前記回動体の一方に設けられ、前記回動体の軸回りに沿って環状に形成された磁界発生部と、
    　前記固定体及び前記回動体の他方に設けられ、前記磁界発生部から通信データのパターンで出力された磁界を検出可能な磁界検出部と、
    　前記磁界検出部の検出信号を基に、前記磁界を通じて送信された前記通信データを取得する信号処理部
    を備えたことを特徴とする回転コネクタ。     Communication between the rotating body that can rotate with respect to the fixed body and the fixed body is non-contact communication, and communication between the fixed body and the rotating body in a state in which the rotation of the rotating body is allowed is possible. In the rotating connector to
    A magnetic field generator provided on one of the fixed body and the rotating body and formed in an annular shape around the axis of the rotating body;
    A magnetic field detector provided on the other of the fixed body and the rotating body and capable of detecting a magnetic field output in a pattern of communication data from the magnetic field generator;
    A rotary connector comprising: a signal processing unit that acquires the communication data transmitted through the magnetic field based on a detection signal of the magnetic field detection unit.
  2. 　前記磁界発生部は、基板に形成された配線パターンから形成されている
    請求項１に記載の回転コネクタ。     The rotary connector according to claim 1, wherein the magnetic field generator is formed of a wiring pattern formed on a substrate.
  3. 　前記磁界検出部は、前記磁界発生部のコイル面の端位置と対向する位置に配置されている
    請求項１又は２に記載の回転コネクタ。     The rotary connector according to claim 1, wherein the magnetic field detection unit is disposed at a position facing an end position of a coil surface of the magnetic field generation unit.
  4. 　前記通信データは、複数の検知部から出力される信号を時分割によりまとめて相手側に送信する多重信号である
    請求項１～３のうちいずれか一項に記載の回転コネクタ。     The rotary connector according to any one of claims 1 to 3, wherein the communication data is a multiplexed signal in which signals output from a plurality of detectors are collected in a time division manner and transmitted to the other party.
  5. 　前記磁界発生部は、磁界の有り無しによって前記通信データの２値化情報を構築する
    請求項１～４のうちいずれか一項に記載の回転コネクタ。     The rotary connector according to any one of claims 1 to 4, wherein the magnetic field generation unit constructs binarized information of the communication data based on presence or absence of a magnetic field.
PCT/JP2017/022182 2016-07-04 2017-06-15 Rotary connector WO2018008357A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0736728A (en) * 1993-07-20 1995-02-07 Yanmar Agricult Equip Co Ltd Inspection device for controller in automatic travelling vehicle
JP2002198238A (en) * 2000-12-26 2002-07-12 Yazaki Corp Power/signal transmitter for rotary connection
JP2002329623A (en) * 2001-04-27 2002-11-15 Yazaki Corp Signal transmission device for steering
JP2003185487A (en) * 2001-12-19 2003-07-03 Tokyo Gas Co Ltd Gas meter and setting equipment for production

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0736728A (en) * 1993-07-20 1995-02-07 Yanmar Agricult Equip Co Ltd Inspection device for controller in automatic travelling vehicle
JP2002198238A (en) * 2000-12-26 2002-07-12 Yazaki Corp Power/signal transmitter for rotary connection
JP2002329623A (en) * 2001-04-27 2002-11-15 Yazaki Corp Signal transmission device for steering
JP2003185487A (en) * 2001-12-19 2003-07-03 Tokyo Gas Co Ltd Gas meter and setting equipment for production

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