WO2018079412A1 - 回転検出装置、ギアシフトユニット及びトランスミッションシステム - Google Patents

回転検出装置、ギアシフトユニット及びトランスミッションシステム Download PDF

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Publication number
WO2018079412A1
WO2018079412A1 PCT/JP2017/037879 JP2017037879W WO2018079412A1 WO 2018079412 A1 WO2018079412 A1 WO 2018079412A1 JP 2017037879 W JP2017037879 W JP 2017037879W WO 2018079412 A1 WO2018079412 A1 WO 2018079412A1
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WO
WIPO (PCT)
Prior art keywords
magnetic field
detection device
rotation
unit
rotation detection
Prior art date
Application number
PCT/JP2017/037879
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English (en)
French (fr)
Japanese (ja)
Inventor
篤史 鈴木
Original Assignee
クノールブレムゼ商用車システムジャパン株式会社
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Application filed by クノールブレムゼ商用車システムジャパン株式会社 filed Critical クノールブレムゼ商用車システムジャパン株式会社
Priority to CN201780065825.3A priority Critical patent/CN109863369A/zh
Publication of WO2018079412A1 publication Critical patent/WO2018079412A1/ja

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/34—Generation or transmission of movements for final actuating mechanisms comprising two mechanisms, one for the preselection movement, and one for the shifting movement
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/245—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train

Definitions

  • the present invention relates to a rotation detection device, a gear shift unit, and a transmission system, and is particularly suitable for application to a rotation detection device, a gear shift unit, and a transmission system including a magnetic field generation unit and a magnetic field detection unit.
  • Patent Document 1 discloses a rotation detection device in which a permanent magnet is disposed at an end of a rotating shaft and a magnetic field sensor is disposed opposite to the permanent magnet. More specifically, a fixing member for fixing the permanent magnet is provided at the end of the rotating shaft, and a recess is provided in the fixing member to suppress the protrusion amount when the permanent magnet is installed at the end of the rotating shaft. The structure to perform is disclosed. Thus, the axial length of the entire rotation shaft when the rotation detection device is installed can be shortened.
  • the rotation detection device described in Patent Document 1 uses a permanent magnet.
  • the cost of the entire rotation detector increases due to the relatively expensive permanent magnet.
  • the cost of a gear shift unit and a transmission system provided with this rotation detector increases.
  • the increase in cost becomes remarkable when manufacturing in large quantities.
  • the present invention has been made in consideration of the above points, and proposes a rotation detection device, a gear shift unit, and a transmission system that can realize cost reduction.
  • a magnetic field generation unit (M1) installed at the end of the rotating shaft (2124) and a magnetic field detection unit (M2) disposed in the vicinity of the magnetic field generation unit (M1).
  • the magnetic field generator (M1) includes a ferromagnetic material (M11) and a soft magnetic material (M12), and rotates with the rotation of the rotating shaft (2124) to detect the magnetic field.
  • the unit (M2) proposes a rotation detection device that detects a magnetic field that changes as the magnetic field generation unit (M1) rotates.
  • 1 is an overall configuration diagram of a transmission system. It is a whole lineblock diagram of a gear shift unit. It is a whole block diagram of a rotation detection apparatus. It is a whole block diagram of another rotation detection apparatus. It is a whole block diagram of another rotation detection apparatus. It is a whole block diagram of another rotation detection apparatus.
  • FIG. 1 shows the overall configuration of the transmission system 1 in the present embodiment.
  • the transmission system 1 is a system that controls an operation related to a shift of a vehicle.
  • the transmission system 1 is an AMT (Automated Manual Transmission) system that automatically connects or disconnects a clutch without performing a clutch operation of a driver and performs a shift process.
  • AMT Automatic Manual Transmission
  • the transmission system 1 includes a transmission control unit (TCU: Transmission Control Unit) 10, a gear shift unit (GSU: Gear Shift Unit) 20, a transmission 30, and the like.
  • TCU Transmission Control Unit
  • GSU Gear Shift Unit
  • the TCU 10 includes a CPU (Central Processing Unit) and a memory.
  • a CPU Central Processing Unit
  • the TCU 10 calculates a target shift speed based on the shift request and other information such as the vehicle speed and the accelerator opening. Then, the TCU 10 outputs a signal for instructing switching to the calculated target shift speed to the GSU 20 as a switching request (S1).
  • S1 switching request
  • the GSU 20 is a motor type gear shift unit and includes an actuator 21 and a sensor 22.
  • the GSU 20 is described here assuming a motor-type gear shift unit.
  • the GSU 20 is not necessarily limited to this, and may be, for example, a pneumatic or hydraulic gear shift unit.
  • Actuator 21 includes a select motor, a shift motor, a rotating shaft, a striker, and the like.
  • the actuator 21 operates the select motor and the shift motor when the switching request (S1) from the TCU 10 is input.
  • a striker is coupled to the rotary shaft so that the striker can move in the axial direction and can rotate integrally with the rotary shaft.
  • the striker moves in the axial direction along with the operation of the select motor (select operation), and predetermined according to the operation of the shift motor. Rotate by distance (shift operation).
  • the sensor 22 is a device that constantly monitors the position of the striker of the GSU 20. That is, the sensor 22 monitors the actual gear engaged by the transmission 30 and monitors the actual gear position.
  • the sensor 22 detects the position of the striker that moves when the GSU 20 operates the select motor and the shift motor, and acquires detection information (S2). Then, the sensor 22 converts the acquired detection information (S2) into a detection signal (S3) that is an electrical signal that can be read by the TCU 10, and outputs the detection signal to the TCU 10.
  • the TCU 10 can grasp the current position of the striker by reading the detection signal (S3). Based on the current shift speed indicated by the detection signal (S3) and vehicle speed information not shown here, a further switching request (S1) can be output to the GSU 20 to operate the actuator 21. At that time, the TCU 10 operates a clutch actuator (not shown) to disconnect or connect the clutch. As a result, it is possible to automatically control the gear position suitable for the vehicle speed.
  • the transmission 30 includes a plurality of gears corresponding to the first to sixth gears and the reverse gears.
  • the GSU 20 Under the control of the TCU 10, the GSU 20 performs a select operation and a shift operation, and a clutch is automatically connected or disconnected to engage a gear of a desired shift stage and output a drive torque from the engine.
  • FIG. 2 shows the overall configuration of the GSU 20.
  • the GSU 20 includes an actuator 21 and a sensor 22. First, the actuator 21 will be described.
  • the actuator 21 includes a select motor 211 and a shift motor 212.
  • a rotation shaft (select shaft) 2111 is rotatably connected to the select motor 211. When the select motor 211 operates, the select shaft 2111 rotates.
  • a screw is formed on the outer periphery of the select shaft 2111, and a first ball screw 2112 is screwed into the screw. Therefore, when the select motor 211 operates and the select shaft 2111 rotates, the first ball screw 2112 moves on the select shaft 2111 in the axial direction D1.
  • another rotating shaft (striker rotating shaft) 2124 is arranged in parallel and rotatable with the select shaft 2111.
  • a spline is formed on the outer periphery of the striker rotating shaft 2124, and a striker 2125 is fitted to the spline.
  • the striker 2125 is disposed so as to engage with the first ball screw 2112 and is movable in the axial direction D2.
  • the shift motor 212 is arranged in a direction orthogonal to the striker rotating shaft 2124 at a different height.
  • a rotation shaft (shift shaft) 2121 is also rotatably connected to the shift motor 212. When the shift motor 212 operates, the shift shaft 2121 rotates.
  • a screw is formed on the outer periphery of the shift shaft 2121, and a second ball screw 2122 is screwed into the screw. Therefore, when the shift motor 212 operates and the shift shaft 2121 rotates, the second ball screw 2122 moves in the axial direction D3.
  • a pin 2122A is formed on the second ball screw 2122, and this pin 2122A is engaged with a notch 2123A formed at the end of the lever 2123.
  • the end of the striker rotating shaft 2124 is fixed to the end of the lever 2123 opposite to the side where the notch 2123A is formed.
  • the sensor 22 includes a position detection device 221 and a rotation detection device 222.
  • the position detection device 221 is disposed on the side of the striker 2125, for example. Then, the position (select position) of the striker 2125 in the axial direction D2 is detected, and the detection information (S2) is converted into a detection signal (S3) and output to the TCU 10.
  • the rotation detection device 222 is installed opposite to the tip of the striker rotation shaft 2124, for example. Then, the rotation angle of the striker rotation shaft 2124 is detected, and the rotation angle (shift position) in the rotation direction D5 of the striker 2125 determined according to this rotation angle is calculated as detection information (S2). This is converted into a detection signal (S3) and output to the TCU 10.
  • the rotation detection device 222 in the present embodiment includes a magnetic field generation unit and a magnetic field detection unit.
  • the cost of the rotation detection device 222 is to be reduced. Details will be described with reference to FIGS. 3 to 6 below.
  • FIG. 3 shows a front configuration and a cross-sectional configuration of the rotation detection device 222.
  • the front configuration is the configuration shown in the upper part of FIG. 3, and is a configuration when viewed from the axial direction (X direction) of the striker rotation shaft 2124 of FIG.
  • the cross-sectional configuration is the configuration shown in the lower part of FIG. 3, and is the configuration when the rotation detection device 222 is viewed from the Y2 direction when cut vertically at the position of the straight line Y1.
  • the rotation detection device 222 includes a magnetic field generation unit M1 and a magnetic field detection unit M2.
  • the magnetic field generator M1 includes a ferromagnetic body M11 such as a permanent magnet and a soft magnetic body M12 such as iron.
  • the soft magnetic body M12 may be made of cobalt, nickel, or an alloy other than iron.
  • the ferromagnetic body M11 and the soft magnetic body M12 are both cylindrical or rectangular.
  • the two soft magnetic bodies M12 extend in the longitudinal direction of the ferromagnetic body M11. Be placed.
  • the magnetic field generator M1 forms a magnetic field in which the magnetic flux B is directed from the N pole to the S pole in the space immediately below the ferromagnetic body M11.
  • the magnetic field detection unit M2 is disposed so as to face the ferromagnet M11 immediately below the ferromagnet M11. In this case, even if the direction of the magnetic flux B and the center line C1 of the magnetic field detector M2 are orthogonal to each other, for example, the magnetic field detector M2 detects only the orthogonal component of the magnetic flux B, the change of the magnetic field is appropriately Can be detected. And the magnetic field detection part M2 can output the detection information detected appropriately to TCU10 as a detection signal (S2).
  • the rotation detection device 222 configured as described above has a simple structure in the magnetic field generation unit M1 and a large proportion of the soft magnetic material M12 in the magnetic field generation unit M1, thereby greatly reducing the manufacturing cost. Can do.
  • FIG. 4 shows a front configuration and a cross-sectional configuration of another rotation detection device 222A.
  • the front configuration is the configuration shown in the upper part of FIG. 4 and is the configuration when viewed from the X direction in FIG.
  • the cross-sectional configuration is the configuration shown in the lower part of FIG. 4, and is the configuration when the rotation detection device 222A is viewed from the Y2 direction when cut vertically at the position of the straight line Y1.
  • the rotation detection device 222A has two ferromagnetic bodies M11A in the longitudinal direction of the soft magnetic body M12A when one surface of two squares of the ferromagnetic body M11A is bonded to both ends in the longitudinal direction of the soft magnetic body M12A. 3 is different from the rotation detection device 222 of FIG. 3 in that it is arranged to extend.
  • the magnetic field generator M1A can form a magnetic field in which the magnetic flux B is directed from the N pole to the S pole in the space immediately below the soft magnetic body M12A.
  • the magnetic field detection part M2 can detect the change of a magnetic field appropriately by detecting the orthogonal component of the magnetic flux B.
  • the rotation detection device 222A configured as described above is manufactured because the structure of the magnetic field generation unit M1A is simple and the proportion of the soft magnetic body M12A in the magnetic field generation unit M1 is large, like the rotation detection device 222 shown in FIG. Cost can be greatly reduced.
  • FIG. 5 shows a front configuration and a cross-sectional configuration of the rotation detection device 222B.
  • the front configuration is the configuration shown in the upper part of FIG. 5, and is the configuration when viewed from the X direction of FIG. 5.
  • the cross-sectional configuration is the configuration shown in the lower part of FIG. 5, and is a configuration when the rotation detection device 222B is viewed from the Y2 direction when cut vertically at the position of the straight line Y1.
  • the ferromagnetic body M11B has an annular shape in which a circular hole is formed at the center of the circle.
  • the soft magnetic body M12B has a bow shape.
  • the soft magnetic body M12B is arranged so that the two bow-shaped strings face each other when the surfaces of the two arcs of the arc are bonded to the inner walls of the N pole side and the S pole side of the hole of the ferromagnetic body M11B, respectively.
  • the magnetic field generator M1B forms a magnetic field in which the magnetic flux B is directed from the soft magnetic body M12B magnetized to the N pole to the soft magnetic body M12B magnetized to the S pole.
  • the magnetic field generator M1B also rotates in the rotation direction D6. At this time, a change occurs in the magnetic field.
  • the rotation angle when the lever 2123 rotates can be detected.
  • the magnetic field detector M2 is disposed inside the hole of the ferromagnetic body M11B.
  • the magnetic flux B is directed from the soft magnetic body M12B magnetized to the N pole toward the soft magnetic body M12B magnetized to the S pole, and the magnetic flux density inside the hole is the largest in the vicinity of the magnetic field generation unit M1B ( The strongest magnetic field). Therefore, the detection accuracy can be improved by arranging the magnetic field detection unit M2 in the hole.
  • the magnetic field detection unit M2 is disposed so as to face the two strings of the soft magnetic body M12B. In this case, even if the direction of the magnetic flux B and the center line C1 of the magnetic field detector M2 are orthogonal to each other, for example, the magnetic field detector M2 detects only the orthogonal component of the magnetic flux B, the change of the magnetic field is appropriately Can be detected. And the magnetic field detection part M2 can output the detection information detected appropriately with sufficient accuracy to the TCU 10 as a detection signal (S2).
  • the magnetic field detection unit M2 is disposed inside the hole of the ferromagnetic body M11B, the axial distance between the magnetic field generation unit M1B and the magnetic field detection unit M2 is zero. Therefore, further downsizing of the rotation detection device 222B can be realized as a whole.
  • FIG. 6 shows a front configuration and a cross-sectional configuration of another rotation detection device 222C.
  • the front configuration is the configuration shown in the upper part of FIG. 6, and is the configuration when viewed from the X direction in FIG.
  • the cross-sectional configuration is the configuration shown in the lower part of FIG. 6, and is the configuration when the rotation detection device 222C is viewed from the Y2 direction when cut vertically at the position of the straight line Y1.
  • the rotation detection device 222C is different from the rotation detection device 222B of FIG. 5 in that the ferromagnetic body M11C has a quadrangular shape and has a shape in which a square hole smaller than the outer periphery is formed at the center.
  • the soft magnetic body M12C is also a quadrangle, and when the three faces of the two quadrilaterals are bonded to the inner wall on the N pole side and the S pole side of the hole of the ferromagnetic body M11C, one side of the two squares faces each other. This is different from the rotation detector 222B of FIG.
  • the cost of the rotation detection device 222C is reduced as in the rotation detection device 222B of FIG. 5, and further downsizing is realized while improving the detection accuracy. be able to.
  • the magnetic field generation unit M1 (M1A, M1B, M1C) includes the ferromagnetic body M11 (M11A, M11B, M11C) and the soft magnetic body M12 ( M12A, M12B, M12C) is adopted, the magnetic field detector M2 is arranged at the strongest magnetic field in the vicinity of the magnetic field generator M1, and the shift position of the striker 2125 is detected by detecting the rotation angle.
  • M1A, M1B, M1C includes the ferromagnetic body M11 (M11A, M11B, M11C) and the soft magnetic body M12 ( M12A, M12B, M12C) is adopted
  • the magnetic field detector M2 is arranged at the strongest magnetic field in the vicinity of the magnetic field generator M1, and the shift position of the striker 2125 is detected by detecting the rotation angle.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
PCT/JP2017/037879 2016-10-25 2017-10-19 回転検出装置、ギアシフトユニット及びトランスミッションシステム WO2018079412A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780065825.3A CN109863369A (zh) 2016-10-25 2017-10-19 旋转检测装置、换档单元以及传动系统

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JP2016208659A JP2018072021A (ja) 2016-10-25 2016-10-25 回転検出装置、ギアシフトユニット及びトランスミッションシステム
JP2016-208659 2016-10-25

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CN110360315A (zh) * 2019-07-17 2019-10-22 浙江万里扬股份有限公司 选换挡机构、变速器及车辆

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001116587A (ja) * 1999-10-20 2001-04-27 Yaskawa Electric Corp 磁気式エンコーダ
JP2005287202A (ja) * 2004-03-30 2005-10-13 Mitsubishi Fuso Truck & Bus Corp 電動モータの制御装置
JP2006317336A (ja) * 2005-05-13 2006-11-24 Mitsubishi Electric Corp 永久磁石式回転センサ
WO2016034625A1 (en) * 2014-09-02 2016-03-10 Infineon Technologies Ag Shaft-integrated angle sensing device

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Publication number Priority date Publication date Assignee Title
JP3233317B2 (ja) * 1993-11-15 2001-11-26 日立金属株式会社 磁気式エンコーダ
US6489761B1 (en) * 1999-09-09 2002-12-03 Delphi Technologies, Inc. Magnetic arrangement for an analog angle encoder
DE10206543A1 (de) * 2002-02-16 2003-08-28 Heidenhain Gmbh Dr Johannes Getriebe sowie mit diesem Getriebe ausgestatteter Drehgeber
JP4544135B2 (ja) * 2005-11-10 2010-09-15 株式会社デンソー 回転角度検出ユニット
JP2008138775A (ja) * 2006-12-01 2008-06-19 Bosch Corp 変速機操作装置
US8179130B2 (en) * 2007-08-27 2012-05-15 Horst Siedle Gmbh & Co. Kg Magnetic revolution counter
JP5157506B2 (ja) * 2008-02-14 2013-03-06 日本精工株式会社 伸縮軸

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001116587A (ja) * 1999-10-20 2001-04-27 Yaskawa Electric Corp 磁気式エンコーダ
JP2005287202A (ja) * 2004-03-30 2005-10-13 Mitsubishi Fuso Truck & Bus Corp 電動モータの制御装置
JP2006317336A (ja) * 2005-05-13 2006-11-24 Mitsubishi Electric Corp 永久磁石式回転センサ
WO2016034625A1 (en) * 2014-09-02 2016-03-10 Infineon Technologies Ag Shaft-integrated angle sensing device

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CN109863369A (zh) 2019-06-07

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