EP2674262A1 - Elektrowerkzeug - Google Patents

Elektrowerkzeug Download PDF

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Publication number
EP2674262A1
EP2674262A1 EP12744616.9A EP12744616A EP2674262A1 EP 2674262 A1 EP2674262 A1 EP 2674262A1 EP 12744616 A EP12744616 A EP 12744616A EP 2674262 A1 EP2674262 A1 EP 2674262A1
Authority
EP
European Patent Office
Prior art keywords
reduction ratio
motor
rotation direction
power tool
work
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP12744616.9A
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English (en)
French (fr)
Other versions
EP2674262B1 (de
EP2674262A4 (de
Inventor
Tadashi Arimura
Yutaka Yamada
Kenichiro Inagaki
Masatoshi Atsumi
Hiroyuki Kaizo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Corp
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Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Publication of EP2674262A1 publication Critical patent/EP2674262A1/de
Publication of EP2674262A4 publication Critical patent/EP2674262A4/de
Application granted granted Critical
Publication of EP2674262B1 publication Critical patent/EP2674262B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/008—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with automatic change-over from high speed-low torque mode to low speed-high torque mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for

Definitions

  • the invention relates generally to power tools and, more particularly, to a power tool that includes a gear shifting means.
  • a user When performing work, such as tightening of a screw or drilling, using a power tool which is capable of switching a reduction ratio in response to a workload's volume, at first, a user starts performing the work at a low reduction ratio, that is, a low-torque high-speed rotation, and then increases the reduction ratio, and changes toward a high-torque low-speed rotation side, in order to perform effectively the work.
  • a low reduction ratio that is, a low-torque high-speed rotation
  • the reduction ratio changes toward a high-torque low-speed rotation side
  • Patent literature 1 a power tool has been proposed which detects change in a load torque directly or indirectly and shifts gear automatically in response to the change.
  • the low reduction ratio is fixed at the start of the work, and in addition, the low reduction ratio is fixed also when a motor is rotated in a reverse rotation direction.
  • Patent literature 1 Japanese patent application publication No. 2009-78349
  • a power tool of the present invention comprises: a motor serving as a rotational power source, the motor being rotatable in a normal rotation direction and a reverse rotation direction; an output unit driven by the motor to be rotated; and a transmission located between the motor and the output unit, the transmission switching a reduction ratio, and wherein the power tool further comprises a control means that makes the transmission perform switching operation of the reduction ratio in response to a workload, the control means changing an initial reduction ratio in the transmission when work is started, in response to a rotation direction of the motor, the initial reduction ratio being set as the reduction ratio in an initial setting.
  • the initial reduction ratio when the rotation direction of the motor is the reverse rotation direction is set higher than the initial reduction ratio when the rotation direction of the motor is the normal rotation direction.
  • the initial reduction ratio when the rotation direction of the motor is the reverse rotation direction is set lower than the initial reduction ratio when the rotation direction of the motor is the normal rotation direction.
  • the initial reduction ratio when the rotation direction of the motor is the normal rotation direction is set at a non-low reduction ratio side, and the initial reduction ratio when the rotation direction of the motor is the reverse rotation direction is also set at the non-low reduction ratio side.
  • the power tool can suitably use the above-mentioned configurations.
  • the power tool may further comprise a work-start gear shift setting means that changes the initial reduction ratio in the transmission through user operation when the work is started.
  • the transmission may be capable of switching the reduction ratio in three speed stages or more.
  • the power tool may further comprise an indicating means that indicates the initial reduction ratio to a user.
  • the power tool of the present invention can start at reduction ratios respectively suitable for both of works performed by a normal rotation and a reverse rotation of the motor. Therefore, the burden on the power tool can be reduced, and the work efficiency can be improved, and the user can work with comfort.
  • a power tool shown in Fig. 2 is an electric drill driver.
  • the power tool includes: a motor 10 that serves as a power source and is rotatable in a normal rotation direction and a reverse rotation direction; an output unit 12 ; and a transmission 11 that has a gear shifting function to switch a reduction ratio. Then, the rotational output of the motor 10 is outputted to the output unit 12 through the transmission 11 .
  • the reference number 18 shown in Fig. 18 represents a battery pack.
  • the transmission 11 is capable of switching the reduction ratio through an electromagnetic member such as a solenoid.
  • the switching operation of the reduction ratio is performed under control of a control circuit 13 .
  • the control circuit 13 controls rotation of the motor 10 in response to the operation of a trigger switch 14 .
  • the control circuit 13 drives the motor 10 through a motor drive circuit 15, and is connected to: a rotation number detection means 16 that detects the rotation number N of the motor 10 ; and a current detection means 17 that detects a motor drive current I .
  • the control circuit 13 directs the transmission 11 to switch the reduction ratio in the transmission 11 in response to a detection output of a drive status detection means that is constituted by the rotation number detection means 16 and the current detection means 17 .
  • the motor drive current I increases, and also the rate of increase in the motor rotation number N increases.
  • the motor drive current I similarly increases, but the rate of increase in the motor rotation number N decreases or reduces to zero.
  • the automatic gear shift is performed under the above-mentioned conditions. Therefore, even if there is an inrush current generated when the motor 10 is started or an inrush current generated when the user repeatedly performs operation for turning on the trigger switch 14 under non-load state of output in order to return to the brink of the off-state, incorrect switching for the automatic gear shift can be prevented by setting a value of the above-mentioned ⁇ 1 as a determinable rate in increase.
  • the reduction ratio is changed toward a direction to be reduced.
  • the power tool such as an electric drill driver
  • the reduction ratio is set at the low reduction ratio (a low-torque high-speed rotation) in the initial state as explained above.
  • the reduction ratio is changed to a high reduction ratio (a high-torque low-speed rotation)
  • the reduction ratio is returned to the low reduction ratio that has been set in the initial state.
  • the initial reduction ratio is set at the low reduction ratio when the motor is rotated in the normal rotation direction, and is set at the high reduction ratio when the motor is rotated in the reverse rotation direction, in response to a rotation direction that has been set by a rotation direction switching means 19 that switches the rotation direction of the motor 10 . It is preferred that switching of the reduction ratio for this is performed at a timing of when the rotation direction switching means 19 switches the rotation direction of the motor 10 .
  • the control circuit 13 in the power tool controls the transmission 11 to start operation in the state of the low reduction ratio when the motor 10 is rotated in the normal rotation direction, and then automatically to switch the reduction ratio to the high reduction ratio with the increase in the workload, and then to return to the low reduction ratio when the work is completed and the trigger switch 14 is turned off.
  • the rotation direction switching means 19 sets the rotation direction of the motor 10 to the reverse rotation direction, the transmission 11 is switched to the state of the high reduction ratio at this time. Therefore, the user can start work in the state of the high-torque low-speed rotation upon turning on the trigger switch 14 . Then, the workload gradually decreases, and then if the above-mentioned conditions are fulfilled, the reduction ratio in the transmission 11 is automatically changed to the low reduction ratio side. Then, when the work is completed and the trigger switch 14 is turned off, the reduction ratio in the transmission 11 is automatically returned to the high reduction ratio side.
  • the power tool has the advantage that there is no need to separately perform switching operation of the reduction ratio in the transmission 11 not only upon tightening of the screw but also upon loosening of the screw, and further the reduction ratio at the start of each work is set so as to become suitable for the work. Therefore, the user can use the power tool with good usability.
  • the initial reduction ratio may be set to the high reduction ratio when the motor is rotated in the normal rotation direction, and may be set to the low reduction ratio when the motor is rotated in the reverse rotation direction, in response to the rotation direction that has been set by the rotation direction switching means 19 .
  • Fig. 5(a) shows torque change when the reverse-threaded screw is loosened by rotating the motor in the normal rotation direction.
  • Fig. 5(b) shows torque change when the reverse-threaded screw is tightened by rotating the motor in the reverse rotation direction.
  • the reduction ratio is set to the high reduction ratio when the motor 10 is rotated in the normal rotation direction, the user can start work in the state of the high-torque low-speed rotation upon turning on the trigger switch 14 . Then, the workload gradually decreases, and then if the predetermined conditions are fulfilled, the reduction ratio is automatically changed to the low reduction ratio side. When the work is completed and the trigger switch 14 is turned off, the reduction ratio in the transmission 11 is automatically returned to the high reduction ratio side.
  • the rotation direction switching means 19 sets the rotation direction of the motor 10 to the reverse rotation direction, the transmission 11 is switched to the state of the low reduction ratio at this time. Therefore, the user can start work in the state of the low reduction ratio upon turning on the trigger switch 14 .
  • the reduction ratio in the transmission 11 is automatically changed to the high reduction ratio. Then, when the work is completed and the trigger switch 14 is turned off, the reduction ratio is returned to the low reduction ratio.
  • the power tool can be also used for tightening or the like of the reverse-threaded screw that is the exact opposite of tightening of the normal screw.
  • the power tool has the configuration that the initial reduction ratio can be set through the user operation.
  • Fig. 8 shows the power tool that further includes a work-start gear shift setting means 20 in which the initial reduction ratio is set through the user operation.
  • the control circuit 13 stores a reduction ratio that has been set by the work-start gear shift setting means 20 , and then controls the transmission 11 so as to use the stored reduction ratio as the initial reduction ratio.
  • Fig. 9 shows a flow chart with respect to the power tool.
  • the initial reduction ratio that is used at the start of the work under the normal rotation state is switched by operating the push switch when the power tool is in the halting state and the rotation direction has been set to the normal rotation direction by the rotation direction switching means 19 .
  • the initial reduction ratio that is used at the start of the work under the reverse rotation state is switched by operating the push switch when the power tool is in the halting state and the rotation direction has been set to the reverse rotation direction.
  • the power tool has the configuration that the initial reduction ratio is switched sequentially by repeating the ON operation of the push switch.
  • the work-start gear shift setting means 20 is not limited to the push switch.
  • the power tool has the configuration that the initial reduction ratio is changed in response to the rotation direction that has been set by the rotation direction switching means 19, and therefore, the power tool can perform the setting operations for the initial reduction ratio when the motor is rotated in the normal rotation direction and the initial reduction ratio when the motor is rotated in the reverse rotation direction, while being reduced in the number of components. Further, the power tool can provide the user good usability.
  • the power tool of the present invention may have the configuration that the transmission 11 is capable of switching the reduction ratio in three speed stages.
  • Fig. 10 shows a flow chart in this case.
  • the initial reduction ratio is switched to the middle reduction ratio (a middle-torque middle-speed rotation), in both cases of the normal rotation direction and the reverse rotation direction.
  • the user may need to make holes with various diameters, such as ⁇ 10mm to ⁇ 30mm.
  • Fig. 11 shows the torque characteristic with respect to drilling the hole in wood. As shown in Fig. 11 , the torque increases at the start of the drilling and then decreases gradually and then becomes stable. Finally, when the drill penetrates through wood, the torque reduces to zero.
  • the reduction ratio is changed to the middle reduction ratio side soon after the start of the drilling, and then the work is completed while the middle reduction ratio is maintained. If the work needs high torque, the middle reduction ratio is further changed to the high reduction ratio and the work is then completed. That is, in the case of drilling a hole in wood, there is little need to perform the work at the low reduction ratio. Therefore, by starting at the middle reduction ratio, the work can be effectively performed without unnecessary gear shift and the burden on the user can be reduced.
  • the power tool When it is also considered that the power tool is applied to the above-mentioned tightening or the like of the screw, it is preferred that the power tool includes the work-start gear shift setting means 20 that is capable of changing the initial reduction ratio through user operation.
  • Figs. 12 and 13 show the power tool that further includes an indicating means 21 indicating the above-mentioned initial reduction ratio that has been initially set to a user.
  • this indicating means 21 is provided with three light emitting diodes located at the upper side of the power tool for example.
  • the respective three light emitting diodes correspond to the low reduction ratio (H), the middle reduction ratio (M), and the high reduction ratio (L).
  • the indicating means 21 turns on a light emitting diode corresponding to the initial reduction ratio at the start of the work in the rotation direction that has been set by the rotation direction switching means 19 . In this way, the indicating means 21 notifies the user of the initial reduction ratio in the present rotation direction of the motor.
  • the indicating means 21 may be provided with a total of six light emitting diodes, three of which are used for the normal rotation direction, and the remaining three are used for reverse rotation direction. Because the user can easily recognize whether it is a predetermined initial reduction ratio, or an initial reduction ratio that has been set by the user, the power tool can prevent failure of the work caused by performing the work at the wrong initial reduction ratio.
  • the power tool of the present invention includes the motor 10 , the transmission 11 and the output unit 12 , as shown in Fig. 2 .
  • the motor 10 is defined as a rotational power source.
  • the motor 10 is configured to be rotatable in regard to normal and reverse rotations. More specifically, the motor 10 is configured to be rotatable in regard to the normal and reverse rotations, thereby being rotated in the normal rotation direction and in the reverse rotation direction.
  • the output unit 12 is configured to be driven by the motor 10 to be rotated.
  • the power tool further includes the control means.
  • the control means is configured to make the transmission 11 perform the switching operation of the reduction ratio in response to the workload.
  • the control means changes the initial reduction ratio in the transmission 11 when work is started, in response to a rotation direction of the motor 10 .
  • the initial reduction ratio is set as the reduction ratio in an initial setting.
  • the control means is the control circuit 13 as shown in Fig. 2 for example.
  • the initial reduction ratio when the rotation direction of the motor 10 is the reverse rotation direction is set higher than the initial reduction ratio when the rotation direction of the motor 10 is the normal rotation direction.
  • control means sets the reduction ratio, so that the initial reduction ratio when the rotation direction of the motor 10 is the reverse rotation direction is set higher than the initial reduction ratio when the rotation direction of the motor 10 is the normal rotation direction.
  • the rotation direction switching means 19 is configured to switch the rotation direction of the motor 10. This makes the motor 10 rotate in the normal rotation direction or in the reverse rotation direction, in response to the rotation direction of the motor 10 that has been set by the rotation direction switching means 19 .
  • the control means is configured to rotate the motor 10 at a first reduction ratio.
  • the control means is configured to rotate the motor 10 at a second reduction ratio. In this case, the second reduction ratio is higher than the first reduction ratio.
  • the rotation direction switching means 19 may be a switch or a lever provided with the power tool for example, but is not limited to those. That is, as long as the rotation direction switching means 19 is a component that is capable of switching the rotation direction of the motor 10 , anything can be adopted.
  • the initial reduction ratio when the rotation direction of the motor 10 is the reverse rotation direction may be set lower than the initial reduction ratio when the rotation direction of the motor 10 is the normal rotation direction.
  • control means sets the reduction ratio, so that the initial reduction ratio when the rotation direction of the motor 10 is the reverse rotation direction is set lower than the initial reduction ratio when the rotation direction of the motor 10 is the normal rotation direction.
  • the rotation direction switching means 19 is configured to switch the rotation direction of the motor 10 . This makes the motor 10 rotate in the normal rotation direction or in the reverse rotation direction, in response to the rotation direction of the motor 10 that has been set by the rotation direction switching means 19 .
  • the control means is configured to rotate the motor 10 at the first reduction ratio.
  • the control means is configured to rotate the motor 10 at the second reduction ratio. In this case, the second reduction ratio is higher than the first reduction ratio.
  • the initial reduction ratio when the rotation direction of the motor 10 is the normal rotation direction may be set at a non-low reduction ratio side and also the initial reduction ratio when the rotation direction of the motor 10 is the reverse rotation direction may be also set at the non-low reduction ratio side.
  • the power tool further includes the work-start gear shift setting means 20 that changes the initial reduction ratio in the transmission 11 through user operation when the work is started.
  • the transmission 11 is capable of switching the reduction ratio in three speed stages or more.
  • the power tool further includes the indicating means that indicates the initial reduction ratio to a user.
  • the power tool includes the rotation direction switching means 19 .
  • the rotation direction switching means 19 is configured to switch the rotation direction of the motor 10 . This makes the motor 10 rotate in the normal rotation direction or in the reverse rotation direction, in response to the rotation direction of the motor 10 set by the rotation direction switching means 19 .
  • the transmission 11 is configured to set the reduction ratio to be lower than a predetermined reduction ratio.
  • the transmission 11 is configured to set the reduction ratio to be higher than a predetermined reduction ratio.
  • the power tool includes the motor rotation number detection means 16 and the motor current detection means 17 .
  • the motor rotation number detection means 16 is configured to detect the rotation number of the motor 10 .
  • the control means is configured to detect whether or not the information obtained from the rotation number of the motor 10 fulfills a first rotation condition.
  • the motor current detection means 17 is configured to detect a drive current in the motor 10 .
  • the control means is configured to detect whether or not a current value of the drive current in the motor 10 fulfills a first current state.
  • the control means 19 sets the rotation direction of the motor 10 so that the motor 10 is rotated in the normal rotation direction
  • the control means is configured to control the transmission 11 to set the reduction ratio to be lower than a predetermined reduction ratio.
  • control means When the control means detects: that the rotation information detected by the motor rotation number detection means 16 fulfills the first rotation condition; and that the current value of the drive current in the motor 10 detected by the motor current detection means 17 fulfills the first current state, and further the rotation direction switching means 19 makes the motor 10 rotate in the normal rotation direction, the control means is configured to control the transmission 11 to set the reduction ratio to be higher than a predetermined reduction ratio.
  • the rotation information represents the rate of increase in the rotation number of the motor 10 .
  • the control means is configured to detect whether or not the first rotation condition is fulfilled: the rate of increase in the rotation number of the motor 10 is less than or equal to a predetermined rate of increase.
  • the control means is configured to detect whether or not the first current state is fulfilled: the current value of the drive current in the motor 10 is more than or equal to a first current value.
  • the rotation information is the rotation number of the motor 10 , but is not limited to that. That is, the rotation information may be the rate of increase in the rotation number of the motor 10 . Or, the rotation information may be information that corresponds to the rotation number of the motor 10 . Or, the rotation information may be information that corresponds to the rate of increase in the rotation number of the motor 10 .
  • the control means further includes the motor rotation number detection means 16 and the motor current detection means 17 .
  • the motor rotation number detection means 16 is configured to detect the rotation number of the motor 10 .
  • the control means is configured to detect whether or not the rotation information obtained from the rotation number of the motor 10 fulfills a second rotation condition.
  • the motor current detection means 17 is configured to detect the current value of the drive current in the motor 10 .
  • the control means is configured to detect whether or not a current value of the drive current in the motor 10 fulfills a second current state.
  • the transmission 11 is configured to set the reduction ratio to be lower than a predetermined reduction ratio.
  • the rotation information represents the rotation number of the motor 10 .
  • the control means is configured to detect whether or not the second rotation condition is fulfilled: the rotation number of the motor 10 is more than or equal to a predetermined rotation number.
  • the control means is configured to detect whether or not the second current state is fulfilled: the current value of the drive current in the motor 10 is less than or equal to a second current value.
  • the power tool further includes the work-start gear shift setting means 20 .
  • the work-start gear shift setting means 20 is configured to change the reduction ratio when operation of the motor 10 is started.
  • the work-start gear shift setting means 20 is configured to have a first setting state or a second setting state selectively.
  • the transmission 11 is configured to set the reduction ratio to be lower than a predetermined reduction ratio.
  • the transmission 11 is configured to set the reduction ratio to be higher than a predetermined reduction ratio.
  • the power tool may be used for removing a screw, and may be used with respect to a reverse-threaded screw.
  • the work-start gear shift setting means 20 is configured to have a first setting state or a second setting state selectively.
  • the transmission 11 is configured to set the reduction ratio to be higher than a predetermined reduction ratio.
  • the transmission 11 is configured to set the reduction ratio to be lower than a predetermined reduction ratio.
  • the rotation direction of the motor 10 when the motor 10 is rotated in the normal rotation direction is a direction opposite to the rotation direction of the motor 10 when the motor 10 is rotated in the reverse rotation direction. Accordingly, in the case where the rotation direction of the motor 10 is defined as the rotation direction to the right when the motor 10 is rotated in the normal rotation direction, the rotation direction of the motor 10 is defined as the rotation direction to the left when the motor 10 is rotated in the reverse rotation direction. In the case where the rotation direction of the motor 10 is defined as the rotation direction to the left when the motor 10 is rotated in the normal rotation direction, the rotation direction of the motor 10 is defined as the rotation direction to the right when the motor 10 is rotated in the reverse rotation direction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Power Tools In General (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP12744616.9A 2011-02-07 2012-02-06 Elektrowerkzeug Active EP2674262B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011024116A JP5559718B2 (ja) 2011-02-07 2011-02-07 電動工具
PCT/JP2012/052588 WO2012108372A1 (ja) 2011-02-07 2012-02-06 電動工具

Publications (3)

Publication Number Publication Date
EP2674262A1 true EP2674262A1 (de) 2013-12-18
EP2674262A4 EP2674262A4 (de) 2017-05-10
EP2674262B1 EP2674262B1 (de) 2018-04-04

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EP12744616.9A Active EP2674262B1 (de) 2011-02-07 2012-02-06 Elektrowerkzeug

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EP (1) EP2674262B1 (de)
JP (1) JP5559718B2 (de)
CN (1) CN103442854B (de)
WO (1) WO2012108372A1 (de)

Cited By (2)

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EP2779396A3 (de) * 2013-03-13 2015-12-02 Panasonic Intellectual Property Management Co., Ltd. Elektrowerkzeug
EP3120975A1 (de) * 2015-07-23 2017-01-25 Black & Decker Inc. Elektrowerkzeug mit richtungsbestimmungssteuerung

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JP2014054708A (ja) * 2012-09-13 2014-03-27 Panasonic Corp 電動工具
CN106077117A (zh) * 2016-08-12 2016-11-09 安徽理工大学 一种用于光纤不锈钢管生产线的智能聚晶模具
JP7027235B2 (ja) * 2018-04-16 2022-03-01 株式会社マキタ 電動工具
GB2597155B (en) * 2019-03-27 2023-08-02 Zhejiang Value Mech & Electrical Products Co Ltd Electric pipe expander

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US20090277658A1 (en) * 2006-06-19 2009-11-12 Positec Power Tools (Suzhou) Co., Ltd. Variable speed tool and variable speed control method
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2779396A3 (de) * 2013-03-13 2015-12-02 Panasonic Intellectual Property Management Co., Ltd. Elektrowerkzeug
US9270211B2 (en) 2013-03-13 2016-02-23 Panasonic Intellectual Property Management Co., Ltd. Electric power tool
EP3120975A1 (de) * 2015-07-23 2017-01-25 Black & Decker Inc. Elektrowerkzeug mit richtungsbestimmungssteuerung
US10998805B2 (en) 2015-07-23 2021-05-04 Black & Decker Inc. Power tool with direction sensing controller

Also Published As

Publication number Publication date
CN103442854A (zh) 2013-12-11
EP2674262B1 (de) 2018-04-04
CN103442854B (zh) 2016-08-10
JP2012161881A (ja) 2012-08-30
EP2674262A4 (de) 2017-05-10
WO2012108372A1 (ja) 2012-08-16
JP5559718B2 (ja) 2014-07-23

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