EP3272924B1 - Schmiermittel-zuführeinrichtung für eine nähmaschine, verfahren zur schmierung einer schmierstelle einer nähmaschine und nähmaschine - Google Patents

Schmiermittel-zuführeinrichtung für eine nähmaschine, verfahren zur schmierung einer schmierstelle einer nähmaschine und nähmaschine Download PDF

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Publication number
EP3272924B1
EP3272924B1 EP17174888.2A EP17174888A EP3272924B1 EP 3272924 B1 EP3272924 B1 EP 3272924B1 EP 17174888 A EP17174888 A EP 17174888A EP 3272924 B1 EP3272924 B1 EP 3272924B1
Authority
EP
European Patent Office
Prior art keywords
lubricant
sewing machine
pump
gripper
pump unit
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.)
Active
Application number
EP17174888.2A
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German (de)
English (en)
French (fr)
Other versions
EP3272924A1 (de
Inventor
Christoph Heckner
Andreas Riffel
Frank Janzen
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.)
Duerkopp Adler AG
Original Assignee
Duerkopp Adler AG
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Filing date
Publication date
Application filed by Duerkopp Adler AG filed Critical Duerkopp Adler AG
Publication of EP3272924A1 publication Critical patent/EP3272924A1/de
Application granted granted Critical
Publication of EP3272924B1 publication Critical patent/EP3272924B1/de
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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B71/00—Lubricating or cooling devices

Definitions

  • the invention relates to a lubricant supply device for a sewing machine and a sewing machine with such a lubricant supply device.
  • Lubricant feeders for sewing machines are from DE 10 2004 018 065 B3 , DE 196 43 960 A1 , DE 18 47 263 U and DE 37 07 801 A1 known. More lubricant supply devices for sewing machines are from JP H11-253 682 A , JP H09-299 670 A , JP 2006-167 035 A and GB 544 016 A as well as DE 10 2007 022 050 A1 known.
  • the invention is based on the object of further developing the known lubricant supply devices in order to ensure metered lubrication of a lubrication point of a sewing machine, while at the same time an undesired escape of lubricant is to be prevented or at least largely avoided.
  • this object is achieved by a lubricant supply device according to claim 1 and a method for lubricating a lubrication point according to claim 4.
  • the lubricant buffering and dispensing element is arranged on the lubricant-side end adjacent to the lubricating point, so that the lubricant buffering and dispensing element touches the lubricating point or there is a small distance of a few millimeters, in particular less than 1mm, in particular less than 3 mm. in particular less than 5 mm.
  • Lubricant transfer occurs from the lubricant buffering and dispensing element to the lubrication point.
  • a lubricant delivery line from the lubricant buffer and delivery element to the lubrication point is not necessary.
  • the lubricant can be stored at the end of the lubricant delivery line on the lubrication point side by the lubricant buffer and delivery element and are delivered to the lubrication point in small quantities. This ensures that the lubrication point is adequately lubricated without the lubricant escaping undesirably.
  • the lubricant buffer and release element can be formed as a supply body that temporarily binds the lubricant and/or as an intermediate storage supply volume.
  • Such a storage body can store the lubricant, for example, by utilizing capillary forces or due to some other inherent absorbency.
  • Such a storage volume can be designed, for example, as an annular groove in a bearing body in the area of the lubrication point.
  • a control and regulation unit is provided, which is in signal communication with the pump unit. By controlling or regulating the pump unit, an improved metered and leak-free supply of the lubricant to the lubrication point is ensured.
  • At least one sensor for detecting operating parameters of the sewing machine is provided, which has a signal connection to the control and regulation unit.
  • at least one sensor of the temperature sensor or humidity sensor type is provided.
  • a lubricant container is assigned to one lubrication point or a lubricant container is assigned to at least two lubrication points or at least two lubricant containers are assigned to at least two lubrication points.
  • the lubricant buffer and release element is designed as an annular buffer volume in which the lubricant is temporarily stored.
  • the pump unit is designed as a micropump.
  • the micropump is in the form of a reciprocating piston pump, an annular gap pump, a diaphragm pump, a magnetic metering pump, centrifugal pump, pressure pump, compressed air diaphragm pump, or generally in a known design as a reciprocating and circulating displacement pump or pumps comparable to this .
  • the reciprocating pump can have a one-piece housing.
  • An actuator in the form of a lifting magnet can be arranged in the housing.
  • the latter can be operatively connected to a piston via a piston rod.
  • the piston can be guided in a sealing manner on an inner housing wall.
  • the reciprocating piston and the housing can define a pumping space.
  • the housing can have a lubricant introduction opening for supplying the lubricant from the lubricant container to the conveying space and a lubricant discharge opening for discharging the lubricant from the conveying space to the lubricant point of the sewing machine.
  • the lubricant inlet opening and the lubricant outlet opening can advantageously be arranged in one plane with respect to one another.
  • the lubricant introduction port and lubricant discharge port may be arranged vertically to each other.
  • the lubricant buffering and delivery member may be constructed from a combination of felt and wick.
  • the use of a felt and/or wick ensures a particularly simple and cost-effective design of the lubricant buffer and delivery element.
  • At least one sensor is provided for detecting at least one operating parameter of the sewing machine.
  • the pump unit is regulated as a function of the recorded operating parameter value.
  • the number of stitches is recorded and the pump unit is activated after a defined number of stitches, such as five million, in particular one million, in particular 100,000 stitches, for a defined period of 20 seconds, in particular 15 seconds, in particular ten seconds, in particular two seconds are switched on.
  • the pump unit can be designed to deliver a very small amount of lubricant per unit of time, for example one drop per day.
  • a time control of the pump unit is to be provided. This ensures a cyclic or non-cyclic supply of the lubricant to the lubrication point.
  • the lubricant When the lubricant is supplied cyclically by means of the pump unit, the lubricant is delivered at predetermined or selected time intervals.
  • the dosing pump could be switched on for a period of 20 seconds, particularly 15 seconds, particularly ten seconds, particularly two seconds every 45 hours of operation, in particular every 15 hours of operation, particularly every hour of operation.
  • the pump unit it could, for example, cyclically deliver the lubricant through more than one stroke, through more than five strokes or through more than ten strokes.
  • a stroke could, for example, convey less than ten ⁇ l of lubricant, less than 50 ⁇ l of lubricant or less than 200 ⁇ l of lubricant.
  • a lubricant supply device according to any one of claims 1 to 3 can also be combined with a lubricating method according to claim 4.
  • a sewing machine 1 with a lubricant supply device 2 is designed in the usual manner with a C-shaped housing which has a shell-shaped base plate 3 accessible from below and a stand 4 adjoining it at the top.
  • An arm 5 which extends essentially parallel to the base plate 3 and ends in a head 6 adjoins the stand 4 at approximately a right angle.
  • a crank drive not shown, which is used for the up and down drive in a needle bar 7 shown schematically with at least one lubrication point 8 in the form of an axial guide or a radial bearing.
  • the crank drive can be driven via an arm shaft, not shown, mounted in the arm 5, which is drive-connected via a toothed belt drive, not shown, to a shaft, not shown, rotatably mounted in the base plate 3.
  • the base plate 3 further components of the sewing machine 1 are arranged, which also include a rotatably mounted gripper 9 shown schematically.
  • the gripper 9 has at least one schematic lubrication point 10 .
  • the gripper is connected to a shaft, not shown, with a drive motor, not shown.
  • the drive motor has a signal connection to control electronics 11.
  • a lubricant container 12 is arranged in stand 4 and is equipped with a first and second pump unit 13, 14 is in fluid communication via a lubricant delivery line 15 .
  • the lubricating points 8 are in fluid communication with the first pump unit 13 via the lubricant delivery line 15 .
  • the lubricating points 10 are in fluid communication with the second pump unit 14 via the lubricant delivery line 15 .
  • the structure and the mode of operation of the lubricant supply device 2 are described as an example for the lubricant supply for the needle bar 7 .
  • the structure described below and the mode of operation of the lubricant supply device 2 can also be transferred to other lubrication points of the sewing machine 1 in an equivalent manner.
  • Structurally identically designed components are given the same reference number as in FIG figure 1 .
  • the lubricant supply device 2 shown has a pump unit 13 which is in fluid communication with the lubricant container 12 via a lubricant delivery line 15 .
  • Lubricant 16 is conveyed from the lubricant container 12 to the lubricating point 8 of the needle bar 7 by means of the pump unit 13 .
  • lubricating oils or lubricating greases can be used as the lubricant 16 .
  • the pump unit 13 shown is designed as a reciprocating pump, for example.
  • the pump unit 13 as an annular gap pump, diaphragm pump, magnetic metering pump, centrifugal pump, pressure pump, compressed air diaphragm pump, diaphragm liquid pump, or generally in a recognized design as Stroke and circulation displacement or pumps comparable to this. Irrespective of the design, the pump unit 13 is designed as a micropump.
  • the pump unit 13 shown has a pump housing 17 .
  • An actuator 18 which is in operative connection with a piston 20 via a piston rod 19 , is arranged in the pump housing 17 .
  • the pump housing 17 has a lubricant supply opening 21 and a lubricant discharge opening 22 .
  • Check valves 23 are arranged both in the lubricant supply opening 21 and in the lubricant discharge opening 22 so that the lubricant 16 can be conveyed from the lubricant container 12 to the lubrication point 8 .
  • a connecting element (not shown) for connecting the pump unit 13 to the lubricant delivery line 15 is arranged adjacent to the lubricant supply opening 21 and the lubricant discharge opening 22 in each case.
  • the connection element can be designed in different ways. This can be designed as a detachable connection, such as in the form of a plug-on connection, bayonet connection, screw connection or the like, or as a non-detachable connection, such as an adhesive connection, shrink connection or the like.
  • the lubricant buffering and dispensing member 24 is in the form of a thread Braid, for example, in the form of a wick and/or as a filamentary fabric, for example in the form of a felt. If a lubricating grease is used as the lubricant 16, the lubricant buffer and release element 24 is designed as an annular gap with a filamentary surface structure, for example in the form of a felt.
  • the lubricant 16 is distributed as follows, regardless of whether it is a lubricating oil or a lubricating grease.
  • the lubricant 16 is absorbed and temporarily stored by the lubricant buffering and dispensing element 24 by capillary forces. Oversaturation with the lubricant 16 of the lubricant buffer and delivery element 24 results in the delivery of the lubricant to the lubricating point 8.
  • Lubricants 16 with good flow properties are particularly advantageous for this application.
  • the construction and functioning of the lubricant supply device 2 will be described as an example for the lubricant supply for the gripper 9.
  • the structure described below and the mode of operation of the lubricant supply device 2 is also applicable to other lubrication points of the sewing machine 1 transferable. Structurally the same designed components receive the same reference number as after figures 1 and 2 .
  • the lubricant supply device 2 shown has a pump unit 14 which is in fluid communication with the lubricant container 12 via a lubricant delivery line 15 .
  • Lubricant 16 is conveyed from the lubricant container 12 to the lubricating point 10 of the gripper 9 by means of the pump unit 14 .
  • the pump unit 14 is designed as a reciprocating pump, for example.
  • the pump unit can be designed as an annular gap pump, diaphragm pump, centrifugal pump, pressure pump, compressed air diaphragm pump, magnetic metering pump, diaphragm liquid pump or generally in a recognized design as a reciprocating and circulating displacement pump or pumps comparable to this.
  • the pump unit 14 is designed as a micropump.
  • the pump unit 14 shown has a pump housing 17 .
  • An actuator 18 which is in operative connection with a piston 20 via a piston rod 19 , is arranged in the pump housing 17 .
  • the pump housing 17 has a lubricant supply opening 21 and a lubricant discharge opening 22 .
  • Check valves 23 are arranged both in the lubricant supply opening 21 and in the lubricant discharge opening 22 so that the lubricant 16 can be conveyed from the lubricant container 12 to the lubrication point 10 .
  • a connecting element (not shown) for connecting the pump unit 14 to the lubricant delivery line 15 is arranged adjacent to the lubricant supply opening 21 and the lubricant discharge opening 22 in each case.
  • the connecting element can be designed in various ways. This can be a detachable connection, such as in the form of a plug-in connection, bayonet connection, screw connection or the like, or as a permanent connection, such as for example as an adhesive connection, shrinkage connection or the like.
  • a lubricant delivery line 15 leads from the lubricant discharge opening 22 of the pump unit 14 to the gripper housing 30.
  • a gripper housing bore 31 is provided in the gripper housing 30, through which the lubricant delivery line 15 is passed.
  • An oil disc 32 is provided in the gripper housing 30 .
  • the oil washer 32 rests on a spring washer, not shown, which in turn rests on a grooved ball bearing 40 .
  • the oil disc 32 is secured against twisting.
  • the lubricant feed line 15 leads the lubricant 16 through the gripper housing bore 31 to the oil disk 32.
  • An oil disk bore 34 is provided in the oil disk 32, through which the lubricant feed line 15 leads to a receptacle 35 for the lubricant buffer and Delivery element is guided within the oil disc 32.
  • the lubricant buffering and dispensing element 24 is arranged in the receptacle 35 so that the lubricant 16 can be temporarily stored at this position.
  • the gripper 9 is arranged coaxially to the oil disc 32 on the gripper shaft 33 and is non-positively connected to the gripper shaft 33 .
  • the gripper 9 has a gripper bore 37 which is inclined relative to a gripper axis 36 of the gripper shaft 33.
  • the inclined gripper bore 37 is arranged adjacent to the receptacle 35 of the oil washer 32 and leads to the lubrication point 10 of a gripper track 38.
  • the gripper track 38 is located between the hook 9 and a bobbin case 39.
  • the lubricant 16 can first be conveyed by the pump unit 14 to the lubricant buffer and delivery element 24 .
  • the lubricant 16 is temporarily stored in the lubricant buffer and delivery element 24 .
  • the rotation of the gripper shaft 33 causes the gripper 9 to rotate so that the centrifugal force causes the lubricant 16 to be metered via the inclined gripper bore 37 to the lubrication point 10 of the gripper track 38 reached. A leakage caused by an excessive amount of lubricant is avoided.
  • the lubricant buffering and dispensing element 24 is designed as a filamentous braid, for example in the form of a wick and/or as a filamentary fabric, for example in the form of a felt.
  • a gripper bore 41 enables lubricant to be delivered from a lubricant buffer store 42 to the lubrication point 10 in the gripper track 38. For example, when the gripper 9 is idle, this is Conveyed and temporarily stored lubricant from the lubricant buffer store 42 via the gripper bore 41, the gripper track 38 and the inclined gripper bore 37 to the lubricant buffer and discharge element 24. This happens as far as the gripper bore 41 communicates with the intermediate lubricant store 42 .
  • the lubricant 16 is stored and distributed analogously to the exemplary embodiment according to FIG 3 , the description of which is hereby referred to.
  • a connecting element (not shown) can be provided.
  • This connecting element can be connected on the input side to the lubricant buffer store 42 or directly to the lubricant delivery line 15 and can communicate with the gripper bore 41 on the output side.
  • a seal (not shown) is required on the output side so that leakage-free lubrication is ensured.
  • the connecting element can have an inner peripheral groove on the output side, which runs along the path of movement of the gripper bore 41 and thus ensures that the connecting element can be rotated in any rotational position of the gripper 9 and thus in any rotational position of the Gripper bore 41 communicates with the connecting element.
  • the gripper bore 41 itself can open out into an outer wall of the housing of the gripper 9 via a circumferential groove, so that such communication with the lubricant feed is also provided in any rotary position of the gripper 9 .
  • a circumferential groove design is possible in which the above-mentioned connecting element can also be omitted.
  • the upper and lower pumping unit 14 , 13 has a control and regulation unit 25 .
  • a control and regulation unit 25 can also be provided for each pump unit 13 , 14 . If more than two pump units are provided, several control and regulation units can also be present.
  • the pump unit 13 , 14 can be operated in a controlled or regulated manner by a control and regulation unit 25 .
  • a control and regulation unit 25 When the pump unit 13, 14 is controlled, an input variable is specified.
  • the input variable is processed in the control and regulation unit 25 and forwarded to the actuator 18 of the pump unit 13, 14, as a result of which a controlled supply of lubricant to the lubricant point 8, 10 is made possible.
  • a wide variety of input variables, such as the time or the number of stitches (not according to the invention), are possible for controlling the pump unit 13, 14.
  • the lubricant 16 could be cycled to the lubricant buffering and dispensing element 24 .
  • a timer unit (not shown) could be provided in the control and regulation unit 25 for this purpose.
  • the operating time of the drive elements could be used as an input variable.
  • the pump unit 13, 14 could be switched on for two seconds every hour of operation.
  • the operating time of the drive elements could be determined by the control electronics 11 of the sewing machine 1.
  • the control electronics 11 sends a signal to the control and regulation unit 25, which in turn switches on the pump unit 13, 14 so that lubricant 16 is pumped from the lubricant container 12 to the lubricant buffer and delivery element 24.
  • the pump unit 13, 14 is switched off, so that no lubricant 16 is conveyed to the lubricant buffer and delivery element 24.
  • the number of stitches could be used as an input variable for controlling the pump unit 13, 14, which is not according to the invention.
  • the pumping unit 13, 14 would run after a fixed number of stitches for a defined time be turned on.
  • the number of stitches represents an important operating parameter that can be determined by means of the control electronics 11 .
  • the looper speed is directly dependent on the number of stitches. Both pump units 13, 14 can thus be controlled as a function of the number of stitches, so that the lubricant 16 can be supplied as a function of consumption.
  • a regulated lubricant supply is based on figure 6 be explained in more detail. Structurally the same components receive the same reference number as after Figures 1 to 5 .
  • sensors 26 are provided which are assigned to the lubrication points 8, 10 and have a signal connection to the control and regulation unit 25.
  • a signal connection between the control and regulation unit 25 and the control electronics 11 is not required.
  • the sensors 26 are advantageously designed as temperature sensors which record the temperature at the lubrication points 8 , 10 . If a predetermined desired temperature is exceeded, such as 60° C., the pump unit 13, 14 is switched on and operated until the temperature falls below the desired value.
  • the pump unit has a one-piece pump housing 17, wherein an actuator 18 is arranged in the pump housing 17, which has the Piston rod 19 is in operative connection with the piston 20, the piston 20 being guided in a sealing manner on the pump housing 17. through the
  • Actuator 18 generates an up and down movement of the reciprocating piston 20 .
  • the piston 20 is moved from a lower position to an upper position, this creates a negative pressure, as a result of which the lubricant is conveyed from the lubricant container into the conveying chamber 27 .
  • an overpressure is created, as a result of which the lubricant is conveyed from the conveying chamber to the lubricant buffer and delivery element 24 .
  • the non-return valves 23 ensure that the lubricant is conveyed in one direction and that the lubricant flows back from the lubricant buffer and delivery element 24 to the lubricant container 12 when the pump unit 13, 14 is not in operation.
  • the actuator 18 is an electromechanical actuator, in particular an electromagnet or piezoelectric actuator running.
  • the piston 20 For leak-free operation of the pump unit 13, 14, the piston 20 must be guided in a sealing manner on one wall of the pump housing 17.
  • a fitting seal is advantageously provided for this purpose.
  • a ring seal, lip ring seal or membrane seal can also be provided.
  • FIG. 8 Another advantageous embodiment of the pump unit is to be figure 8 be described in more detail. Structurally the same components have the same reference number as after Figures 1 to 7 .
  • the pump unit is designed as an annular gap pump.
  • the piston 20 has an annular gap which defines a pumping chamber 27 with the pump housing 17 .
  • the lubricant discharge opening 22 is offset vertically to the lubricant supply opening 21 .
  • a vent hole 28 is provided below the piston 20 to equalize the pressure.
  • the lubricant discharge opening is advantageously on the piston-side end 22 a lubricant transfer element 29 is provided. This ensures improved absorption of the lubricant 16 from the delivery chamber 27 to the lubricant delivery line 15 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP17174888.2A 2016-07-20 2017-06-08 Schmiermittel-zuführeinrichtung für eine nähmaschine, verfahren zur schmierung einer schmierstelle einer nähmaschine und nähmaschine Active EP3272924B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016213253.9A DE102016213253A1 (de) 2016-07-20 2016-07-20 Schmiermittel-Zuführeinrichtung für eine Nähmaschine

Publications (2)

Publication Number Publication Date
EP3272924A1 EP3272924A1 (de) 2018-01-24
EP3272924B1 true EP3272924B1 (de) 2023-08-23

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EP17174888.2A Active EP3272924B1 (de) 2016-07-20 2017-06-08 Schmiermittel-zuführeinrichtung für eine nähmaschine, verfahren zur schmierung einer schmierstelle einer nähmaschine und nähmaschine

Country Status (6)

Country Link
EP (1) EP3272924B1 (zh)
JP (1) JP2018011944A (zh)
KR (1) KR102311392B1 (zh)
CN (1) CN107641913B (zh)
DE (1) DE102016213253A1 (zh)
TW (1) TW201807285A (zh)

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
CN115404602A (zh) * 2022-08-18 2022-11-29 浙江安骐智能科技有限公司 一种用于缝纫机的供油机构

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007022050A1 (de) * 2007-05-08 2008-11-13 Pfaff Industrie Maschinen Ag Nähmaschine mit einem Schmiermittelstandsdetektor

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GB516016A (en) * 1937-06-22 1939-12-20 Union Special Machine Co Improvements in sewing machines
GB544016A (en) * 1939-12-30 1942-03-24 Union Special Machine Co Improvements in sewing machines
US2529573A (en) * 1947-11-12 1950-11-14 Singer Mfg Co Oil metering device for sewing machines
GB746008A (en) * 1953-06-01 1956-03-07 Singer Mfg Co Lubricating arrangement for sewing machines
DE1847263U (de) * 1961-09-07 1962-02-22 Kochs Adler Ag Naehmaschinen mit automatischer schmiermittelzufuehrung.
US3366084A (en) * 1966-02-10 1968-01-30 Singer Co Sewing machine lubrication
DE1785212A1 (de) * 1967-09-13 1972-01-05 Rimoldi C Spa Virginio Vorrichtung zur UEberwachung der Schmierung einer Naehmaschine
GB1202168A (en) * 1967-09-13 1970-08-12 Rimoldi C Spa Virginio A sewing machine provided with a pressure lubrication system
DE2928077C2 (de) * 1979-07-12 1981-04-23 Pfaff Industriemaschinen GmbH, 6750 Kaiserlautern Nähmaschine mit einer Vorrichtung zum Schmieren des Greifers
DE3707801A1 (de) * 1986-03-19 1987-10-01 Union Special Gmbh Schmiermittelkuehlvorrichtung fuer eine naehmachine
JPH09299670A (ja) * 1996-05-09 1997-11-25 Juki Corp ミシンの給油機構
DE19643960C2 (de) 1996-10-31 1998-10-08 Duerkopp Adler Ag Schmiervorrichtung für eine Nähmaschine
JP4127891B2 (ja) * 1998-03-16 2008-07-30 株式会社バルダン ミシン
JP2005027847A (ja) * 2003-07-11 2005-02-03 Juki Corp ミシン
DE102004018065B3 (de) 2004-04-08 2005-05-25 Dürkopp Adler AG Schmiervorrichtung für eine Nähmaschine
JP2006167035A (ja) * 2004-12-14 2006-06-29 Juki Corp ミシン
JP4959953B2 (ja) * 2005-04-21 2012-06-27 Ｊｕｋｉ株式会社 ミシンの給油機構
DE102009016163A1 (de) * 2009-04-03 2010-10-14 Schaeffler Technologies Gmbh & Co. Kg Führungswagen eines Linearwälzlagers mit Schmiervorrichtung
DE102013007629B4 (de) * 2013-05-06 2016-12-15 Benz GmbH Werkzeugsysteme Einwechselaggregat mit einem Kleinmengenschmiermittelspender II

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DE102007022050A1 (de) * 2007-05-08 2008-11-13 Pfaff Industrie Maschinen Ag Nähmaschine mit einem Schmiermittelstandsdetektor

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Publication number Publication date
KR102311392B1 (ko) 2021-10-12
EP3272924A1 (de) 2018-01-24
DE102016213253A1 (de) 2018-01-25
CN107641913B (zh) 2021-11-19
JP2018011944A (ja) 2018-01-25
TW201807285A (zh) 2018-03-01
CN107641913A (zh) 2018-01-30
KR20180010158A (ko) 2018-01-30

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