WO2016158712A1 - 螺合部材締付け工具 - Google Patents

螺合部材締付け工具 Download PDF

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Publication number
WO2016158712A1
WO2016158712A1 PCT/JP2016/059537 JP2016059537W WO2016158712A1 WO 2016158712 A1 WO2016158712 A1 WO 2016158712A1 JP 2016059537 W JP2016059537 W JP 2016059537W WO 2016158712 A1 WO2016158712 A1 WO 2016158712A1
Authority
WO
WIPO (PCT)
Prior art keywords
screwing member
rotation
amount
engaging portion
time
Prior art date
Application number
PCT/JP2016/059537
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
浩和 肥田
賢二 大塚
Original Assignee
日東工器株式会社
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 日東工器株式会社 filed Critical 日東工器株式会社
Priority to EP16772593.6A priority Critical patent/EP3275596B1/en
Priority to CN201680018648.9A priority patent/CN107405760B/zh
Priority to KR1020177029228A priority patent/KR102006094B1/ko
Publication of WO2016158712A1 publication Critical patent/WO2016158712A1/ja

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/141—Mechanical overload release couplings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/145—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers
    • B25B23/1456—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers having electrical components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers

Definitions

  • the present invention relates to a screwing member tightening tool, and more particularly to a screwing member tightening tool provided with a temporary tightening function of a screwing member such as a screw.
  • a screwed member such as a screw or a nut may be temporarily tightened so as not to completely tighten the member to be fastened.
  • a screwed member such as a screw or a nut
  • these screws are temporarily tightened, and after final position adjustment of the member to be fastened is performed, the screws are accurately tightened.
  • the to-be-fastened member can be fastened and fixed at the position.
  • the screw for fixing the terminal in the terminal block is used by the user to connect and finally tighten the terminal, it is usually in a temporarily tightened state when the product is shipped.
  • an electric driver As disclosed in Patent Document 1 is generally used.
  • the operator operates the lever to stop the electric driver before the screw is completely tightened.
  • a screwing member having a temporary tightening function of the screwing member can be tightened so that the temporary tightening operation of the screwing member can be performed without depending on the operator's sensory operation.
  • the purpose is to provide a tool.
  • a screwing member tightening tool having a function of temporarily tightening a screwing member comprising: A screwing member engaging portion engaged with the screwing member; A driving unit that rotationally drives the screwing member engaging unit; A control unit that controls the drive of the drive unit; The control unit controls the drive unit so as to automatically reverse the screwing member engaging portion by a second rotation amount smaller than the first rotation amount after rotating the screwing member engaging portion forwardly by the first rotation amount.
  • the screwing member tightening tool is provided.
  • the screwing member tightening tool since the screwing member engaging portion is reversely rotated by the second rotation amount after being rotated forward by the first rotation amount, the first and second rotation amounts are By appropriately setting according to the screwing member to be used, it becomes possible to put the screwing member in a temporarily tightened state regardless of the operator's sensory operation.
  • the control unit is configured to control the amount of rotation of the screwing member engaging unit by controlling the driving time of the driving unit, and the screwing is performed by driving the driving unit forward for the first time.
  • the member engaging portion is rotated forward by the first rotation amount, and the screwing member engaging portion is rotated reversely by the second rotation amount by reversely driving the drive portion for the second time,
  • the first time may be set such that the first rotation amount is an amount by which the screwing member does not seat on the fastened member.
  • the screwing member Since the first time is set such that the first amount of rotation is the amount by which the screwing member does not seat on the fastened member, the screwing member is seated on the chrysanthemum even when using the chrysanthemum, for example And never get fixed.
  • the screwing member is a screw or a bolt
  • the female screw becomes far by setting the first time so that the first rotation amount is the amount immediately before the head of the screw or the like contacts the chrysanthemum. It is also possible to set a temporary tightening state in which the head of a screw or the like floats by a predetermined amount after confirming whether it is formed.
  • It further comprises torque detection means for detecting that a load torque equal to or greater than a predetermined value is applied to the screwing member engaging portion,
  • torque detection means for detecting that a load torque equal to or greater than a predetermined value is applied to the screwing member engaging portion,
  • the control unit may cause the drive unit to stop.
  • the first amount of rotation is an amount of rotation after the screwing member is seated on the member to be fastened and is further tightened by a predetermined tightening torque.
  • the control unit rotates the screwing member engaging portion by the first rotation amount to cause the screwing member to be seated on the to-be-fastened member, and a predetermined tightening torque for the screwing member that is seated After that, the screwing member engaging portion can be automatically reversely rotated by the second rotation amount.
  • the screwing member Since the screwing member is once seated, it is possible to uniformly align the positions of the screwing members after temporary tightening without being affected by variations in the length of the screwing members and variations in the initial arrangement of the screwing members. Become. Further, by applying a predetermined tightening torque to the seated screwing member, the state of the seat surface can be stabilized, and the screwed member can be tightened more stably at the time of the final tightening after the temporary tightening. That is, for example, when burrs are present on the seat surface, the burrs on the seat surface can be crushed by applying a predetermined tightening torque at the time of temporary tightening, so that the load generated by the burr can be reduced at the time of full tightening.
  • the seating surface when the seating surface is soft, the seating surface is once crushed by applying a predetermined tightening torque at the time of temporary tightening, so that there is no need to crush the seating surface at the time of full tightening, and the screw may float It is possible to carry out a final tightening.
  • the control unit may determine that the screwing member engaging portion has rotated forward by the first rotation amount when the clutch sensor detects the release of the drive connection.
  • the clutch mechanism makes it possible to prevent an excessive load from being applied to the screwing member and the member to be fastened.
  • control unit The amount of rotation of the screwing member engaging portion is controlled by controlling the driving time of the driving portion, and the screwing member engaging portion is rotated by driving the driving portion forward for the first time.
  • the screwing member engaging portion is reversely rotated by the second rotation amount by rotating the drive portion in reverse by the first rotation amount and rotating the drive portion in reverse by the second time.
  • the first amount of rotation is the amount of rotation after the screwing member is seated on the to-be-fastened member until it is further tightened by a predetermined tightening torque, and the screwing member engaging portion is rotated by the first amount of rotation
  • the screwing member is seated on the member to be fastened by applying a predetermined tightening torque to the screwing member seated, and then the screwing member engaging portion is automatically rotated by the second rotation amount. It is possible to make it possible to select the torque control mode to be reversely
  • the counter portion counts as if normal temporary tightening was performed once. Can be further provided. This makes it possible to know the number of screwing members that have been normally tightened.
  • the apparatus may further include a remote setting device that wirelessly communicates with the control unit to change the set values of the first and second rotation amounts.
  • the electric driver 1 according to an embodiment of the present invention comprises an electric driver main body 10 and a remote setting device 12, as shown in FIG.
  • the electric driver body 10 includes a housing 14, a driver bit 16 engaged with a screw, a bit holder 18 for detachably holding the driver bit 16 and a trigger lever 20 for operating start and stop of driving of the bit holder 18. , A forward / reverse rotation switch 22 for switching the rotation direction of the bit holder 18, and an operation display unit 24 fixed to the housing 14. Further, as shown in FIG. 2, inside the housing 14, there is a control unit 30 including a main control unit 26 and a motor control unit 28, and a drive motor 32 which is driven and controlled by the motor control unit 28. The bit holder 18 is rotationally driven by a drive motor 32 which is driven and controlled by a motor control unit 28.
  • the rotation direction of the bit holder 18 can be changed by changing the rotation direction of the drive motor 32 by switching the forward / reverse rotation switch 22 between forward rotation (R), neutral, and reverse rotation (L).
  • a clutch mechanism (not shown) for driving and connecting these is provided between the drive motor 32 and the bit holder 18, and a torque equal to or higher than a predetermined tightening torque when the screw is fully tightened is applied to the bit holder 18. When this occurs, the clutch mechanism acts to release the drive connection between the drive motor 32 and the bit holder 18.
  • a clutch sensor 34 for detecting that the drive connection of the clutch mechanism is released, a counter portion 36 for counting the number of screws fully and temporarily tightened, and infrared rays from the remote setting device 12
  • an infrared receiver 38 for receiving a signal.
  • an LED display unit 40 displays the operation state of the motor-driven driver 1 in the color.
  • the seven-segment display unit 42 displays setting parameters at the time of setting, and when an error occurs, displays a number or the like corresponding to the error.
  • the setting of the electric driver main body 10 is changed by the various operation buttons 44, and the electric driver main body 10 is described later in a normal drive mode, a temporary tightening mode, an infrared receiving mode, a main body setting mode, and a screw tightening time measurement mode. You can switch between
  • the remote setter 12 transmits an infrared signal to the infrared receiving unit 38 of the motor-driven driver main body 10, a button operation unit 48, a liquid crystal display unit 50, and a control unit 52 for controlling these components. And.
  • the remote setter 12 communicates with the main control unit 26 of the electric driver main body 10 by infrared communication to change various settings of the electric driver main body 10 ing.
  • the remote setting device 12 can perform more detailed setting as compared to setting items that can be performed by the operation display unit 24 of the electric driver main body 10.
  • the electric driver main body 10 When the power is turned on, the electric driver main body 10 enters a password input state, and shifts to a normal drive mode which is a drivable state by inputting a preset password.
  • the password setting is optional, and the normal drive mode can be immediately set without entering the password.
  • the forward rotation / reverse switch 22 is set to the forward rotation (R) or reverse rotation (L) position, and the driver bit 16 is engaged with the screw in the initial arrangement state (that is, the tip is engaged with the female screw of the fastened member)
  • the drive motor 32 is controlled such that the bit holder 18 rotates in the direction selected by the forward / reverse switch 22 by turning on the trigger lever 20 while pressing against the head of the screw).
  • the trigger lever 20 is turned off, the drive motor 32 is stopped and the rotation of the bit holder 18 is stopped.
  • the forward / reverse switch 22 is operated, or the predetermined maximum drive time is exceeded.
  • the drive motor 32 is forcibly stopped to stop the rotation of the bit holder 18. Also, when the trigger lever 20 is turned off before the predetermined minimum drive time has elapsed, an error signal is issued and the drive motor 32 is forcibly stopped. When an error occurs, a display corresponding to the error is displayed on the 7-segment display unit. If the drive motor 32 is normally stopped without an error occurring, it is determined that the full tightening of the screws has been completed normally, and the counter unit 36 updates the number of the full tightening screws.
  • this temporary tightening mode when the trigger lever 20 is turned ON, the bit holder 18 is automatically reversely rotated by a predetermined second rotation amount smaller than the first rotation amount after being rotated forward by the predetermined first rotation amount.
  • the control unit 30 controls the drive motor 32. More specifically, this temporary tightening mode is further divided into two control modes. One of them is that the screw is seated on the member to be fastened (that is, the head of the screw engages with the member to be fastened) and a predetermined tightening torque is applied to the screw and the clutch mechanism is released to clutch it In this torque control mode, it is determined that the bit holder 18 has rotated forward by the first amount of rotation based on the detection by the sensor 34 (FIG. 3).
  • the other is a time control mode in which it is determined that the bit holder 18 has rotated forward by the first rotation amount after driving the drive motor 32 for a predetermined time (FIG. 4).
  • the control unit 30 can selectively switch between the torque control mode and the time control mode by a switching mechanism (not shown), but controls only one of the torque control mode and the time control mode. It is also possible to do so.
  • control unit 30 stops the drive of the drive motor 32 for a predetermined time, for example, 0.5 seconds (S20). When the stop for a certain period of time is finished, the drive of the drive motor 32 in the reverse direction is started, and the bit holder 18 automatically starts reverse (S22). Control unit 30 determines that bit holder 18 has been rotated by the second rotation amount when a predetermined time has elapsed from the start of reverse rotation (S28). Before a predetermined reverse rotation drive time has elapsed, for example, since the screw is in the biting state, the reverse rotation is not performed and a load torque equal to or higher than a predetermined value is applied to the bit holder 18, the clutch mechanism is released and the clutch sensor 34 detects this.
  • a predetermined time for example, 0.5 seconds
  • the screw is once tightened and then returned by a predetermined amount (second rotation amount)
  • the screw length variation and the initial arrangement state of the screw the tip of the screw is engaged with the female screw
  • the heads of the plurality of screws can be floated by an approximately equal amount without being affected by the variation in the condition before screw tightening is performed.
  • the number of screws temporarily tightened by the counter unit 36 is updated (S32).
  • the reverse rotation is performed by the second rotation amount after the elapse of a predetermined time from the start of reverse rotation, but a predetermined rotation number as the second rotation amount is set in advance, and the predetermined rotation number is counted. It is also possible to reverse the second rotation amount.
  • the control unit 30 starts driving the drive motor 32 in the normal direction and the bit holder 18 starts normal rotation (S52). If the trigger lever 20 is turned off (S56) before the predetermined forward rotation drive time (first time) elapses after the trigger lever 20 is turned on (S56), the drive motor 32 is gradually stopped (S58) .
  • the load torque equal to or greater than a predetermined value is applied to the bit holder 18 during normal rotation drive because the internal thread is not completely formed, for example, the clutch mechanism is released and detected by the clutch sensor 34 (S60) An error signal is issued, and the drive motor 32 is stopped (S62).
  • the first rotation amount is set to a normal rotation driving time (first time) such that the screw does not sit on the fastened member.
  • first time a normal rotation driving time
  • the screw can be temporarily tightened without being seated on the member to be fastened, so that, for example, even when using a member such as a chrysanthemum that can not be easily loosened once the screw is tightened. It becomes possible to put the screw in a temporarily tightened state.
  • the first rotation amount is set to an amount immediately before the screw is seated, it is possible to check whether the female screw portion is properly formed to a deeper position.
  • the number of screws temporarily tightened by the counter unit 36 is updated (S76).
  • the remote setting device 12 drives the driving speed of the driving motor 32, forward rotation driving time (first time) and reverse rotation driving. It becomes possible to change the setting of time (second time). Further, when the electric driver main body 10 is switched to the main body setting mode, the above-described various setting changes can be performed by the operation display unit 24 of the electric driver main body 10.
  • the above-mentioned setting of the maximum driving time and the minimum driving time can be performed by measuring the time required to tighten a screw actually used in the manufacturing line. Specifically, the time required to actually tighten the screw after turning on the trigger lever 20 is automatically measured, and if the measured time is longer than the already set maximum driving time, the maximum driving time is The measured time is updated, and if it is smaller than the minimum driving time, the minimum driving time is updated to the measured time.
  • the clutch mechanism and the clutch sensor 34 are used as torque detection means for detecting the torque applied to the bit holder 18.
  • the torque sensor measures torque or the current flowing to the drive motor 32 is measured. The torque may be determined by doing this.
  • the control unit 30 and the counter unit 36 may be disposed outside the motor-driven driver main body 10 so as to be connected to the motor-driven driver main body 10 by wiring.
  • the remote setter 12 communicates with the control unit 30 of the motor-driven driver main body 10 by optical wireless communication using infrared rays, wireless communication may be performed using electromagnetic waves in other frequency bands.
  • the electric driver using the electric drive motor 32 as the drive unit for rotationally driving the bit holder 18 is shown.
  • a pneumatic driver using an air motor with compressed air as a driving source is used as an air motor.
  • a solenoid valve may be provided to control the compressed air supplied, and the controller may control the solenoid valve.
  • the object to be temporarily or fully tightened is not limited to a screw having a cross hole, but may be another screwing member such as a hexagonal bolt or a nut.
  • the driver bit 16 as the screwing member engaging portion is replaced with another one such as a socket in accordance with the target screwing member.
  • the screwing member engaging portion may be fixedly held on the tool body and can not be removed.
  • Motorized driver 1 Motorized driver main body 10; Remote setting device 12; Housing 14; Driver bit 16; Bit holder 18; Trigger lever 20; Forward / reverse switch 22; Operation display unit 24; Main control unit 26; Motor control unit 28; Control unit 30; Drive motor 32; Clutch sensor 34; Counter unit 36; Infrared receiving unit 38; LED display unit 40; 7-segment display unit 42; Operation button 44; Infrared transmitting unit 46; Button operation unit 48; Control unit 52;

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
PCT/JP2016/059537 2015-03-27 2016-03-25 螺合部材締付け工具 WO2016158712A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP16772593.6A EP3275596B1 (en) 2015-03-27 2016-03-25 Threaded member tightening tool
CN201680018648.9A CN107405760B (zh) 2015-03-27 2016-03-25 螺合构件紧固工具
KR1020177029228A KR102006094B1 (ko) 2015-03-27 2016-03-25 나사 결합 부재 체결 공구

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-066621 2015-03-27
JP2015066621A JP6482351B2 (ja) 2015-03-27 2015-03-27 螺合部材締付け工具

Publications (1)

Publication Number Publication Date
WO2016158712A1 true WO2016158712A1 (ja) 2016-10-06

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ID=57004311

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/059537 WO2016158712A1 (ja) 2015-03-27 2016-03-25 螺合部材締付け工具

Country Status (6)

Country Link
EP (1) EP3275596B1 (enrdf_load_stackoverflow)
JP (1) JP6482351B2 (enrdf_load_stackoverflow)
KR (1) KR102006094B1 (enrdf_load_stackoverflow)
CN (1) CN107405760B (enrdf_load_stackoverflow)
TW (1) TWI597134B (enrdf_load_stackoverflow)
WO (1) WO2016158712A1 (enrdf_load_stackoverflow)

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EP3689830A4 (en) 2017-09-30 2020-12-16 BKT Co., Ltd. DEVICE AND METHOD FOR REDUCING NITROGEN REMOVAL AND INHIBITING THE ACTIVITY OF NITRITE-OXIDIZING BACTERIA
CN108107933B (zh) * 2017-12-13 2020-06-19 北京小米移动软件有限公司 螺丝刀控制方法及装置
US11326706B2 (en) 2020-02-14 2022-05-10 Illinois Tool Works Inc. Portable valve operating machine for use in exercising valves
US12135096B2 (en) 2020-02-14 2024-11-05 Illinois Tool Works, Inc. Portable valve operating device for use in exercising valves
US11920695B2 (en) 2020-02-14 2024-03-05 Illinois Tool Works, Inc. Portable valve operating machine for use in exercising valves having a torque management system
US12129934B2 (en) 2020-02-14 2024-10-29 Illinois Tool Works Inc. Portable valve operating device for use in exercising valves
JP2023036431A (ja) * 2021-09-02 2023-03-14 パナソニックホールディングス株式会社 電動工具
JP2025034161A (ja) * 2023-08-30 2025-03-13 パナソニック株式会社 電動工具、電動工具システム、制御方法及びプログラム

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JPS5246599A (en) * 1975-10-13 1977-04-13 Sanyo Kiko Kk Bolt fastening method
JPH02269579A (ja) * 1989-04-11 1990-11-02 Daihatsu Motor Co Ltd ボルト締付方法
JPH03294123A (ja) * 1990-04-10 1991-12-25 Toyota Motor Corp ねじ締付方法
JPH0475879A (ja) * 1990-07-12 1992-03-10 Hayashi Tokei Kogyo Kk 電動ドライバ
JPH07308865A (ja) * 1994-05-13 1995-11-28 Nissan Motor Co Ltd インパクト式ねじ締め装置
JP2003191174A (ja) * 2001-12-26 2003-07-08 Fujitsu Ten Ltd ネジ締め装置
WO2008093418A1 (ja) * 2007-01-31 2008-08-07 Fujitsu Limited ネジ締め装置

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JP2658487B2 (ja) * 1990-04-10 1997-09-30 トヨタ自動車株式会社 ねじ締付方法
JP3992676B2 (ja) 2003-11-20 2007-10-17 日東工器株式会社 電動ドライバ
JP4998547B2 (ja) * 2007-02-26 2012-08-15 富士通株式会社 ネジ締め装置
JP2010125565A (ja) * 2008-11-28 2010-06-10 Nitto Seiko Co Ltd ねじ部品仮締め機およびねじ部品仮締め方法
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Publication number Priority date Publication date Assignee Title
JPS5246599A (en) * 1975-10-13 1977-04-13 Sanyo Kiko Kk Bolt fastening method
JPH02269579A (ja) * 1989-04-11 1990-11-02 Daihatsu Motor Co Ltd ボルト締付方法
JPH03294123A (ja) * 1990-04-10 1991-12-25 Toyota Motor Corp ねじ締付方法
JPH0475879A (ja) * 1990-07-12 1992-03-10 Hayashi Tokei Kogyo Kk 電動ドライバ
JPH07308865A (ja) * 1994-05-13 1995-11-28 Nissan Motor Co Ltd インパクト式ねじ締め装置
JP2003191174A (ja) * 2001-12-26 2003-07-08 Fujitsu Ten Ltd ネジ締め装置
WO2008093418A1 (ja) * 2007-01-31 2008-08-07 Fujitsu Limited ネジ締め装置

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Also Published As

Publication number Publication date
KR102006094B1 (ko) 2019-07-31
TWI597134B (zh) 2017-09-01
EP3275596A4 (en) 2018-12-05
TW201703939A (zh) 2017-02-01
CN107405760A (zh) 2017-11-28
JP6482351B2 (ja) 2019-03-13
EP3275596B1 (en) 2021-07-14
CN107405760B (zh) 2019-07-05
KR20170128467A (ko) 2017-11-22
JP2016185581A (ja) 2016-10-27
EP3275596A1 (en) 2018-01-31

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