WO2019142655A1 - ステアリングホイール - Google Patents
ステアリングホイール Download PDFInfo
- Publication number
- WO2019142655A1 WO2019142655A1 PCT/JP2019/000004 JP2019000004W WO2019142655A1 WO 2019142655 A1 WO2019142655 A1 WO 2019142655A1 JP 2019000004 W JP2019000004 W JP 2019000004W WO 2019142655 A1 WO2019142655 A1 WO 2019142655A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- support member
- steering wheel
- damper unit
- flange
- notch
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/203—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns
- B60R21/2035—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit
- B60R21/2037—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit the module or a major component thereof being yieldably mounted, e.g. for actuating the horn switch or for protecting the driver in a non-deployment situation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/04—Hand wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/04—Hand wheels
- B62D1/08—Spokes, e.g. resilient
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/22—Arrangements for reducing or eliminating reaction, e.g. vibration, from parts, e.g. wheels, of the steering system
- B62D7/222—Arrangements for reducing or eliminating reaction, e.g. vibration, from parts, e.g. wheels, of the steering system acting on the steering wheel
Definitions
- the present invention relates to a steering wheel of a motor vehicle, and more particularly, to a structure of a steering wheel provided with a so-called floating airbag module.
- a front airbag device is often provided at the center of the steering wheel on the passenger side.
- the front airbag is deployed by the inflation gas to protect the occupant from a forward collision.
- the front airbag is housed in the housing together with the inflator that supplies the gas, and is attached to the steering wheel as an integral airbag module.
- Such an air bag module is held in a floating state from the core of the steering wheel (floating structure), moved by the occupant in the direction of the horn during the operation of the horn and moved in the direction of the core to be utilized as a horn switch (for example, , Patent Document 1).
- the air bag module of Patent Document 1 adopts a snap fit structure so as to be easily attached to a core metal member which is a base of a steering wheel.
- the snap fit structure is generally a structure that performs coupling (connection) by using the elasticity of members. And it is possible to connect to the clip (rod-like spring) of the back side of a metal core member, and to attach to this only by inserting the pin provided in the air bag module into a metal core member.
- a coil spring is provided on the outside of the pin attached to the bottom of the air bag module, and biases the air bag module upward (passenger side) when the horn operation is not performed.
- the air bag module is pushed against the repulsive force of the coil spring.
- a groove is formed at the tip of the pin, and the groove is hooked and connected to the above-mentioned clip.
- each damper unit may be provided with a shock absorbing member made of, for example, rubber for vibration absorption.
- the buffer member is disposed on the outer periphery of the pin and is supported so as to be sandwiched by the upper and lower members.
- the vibration absorbing effect by the buffer member is insufficient.
- the buffer effect against large vibration and swing that swings with respect to the central axis of the pin is insufficient.
- the present invention is made in view of such a subject, and an object of the present invention is to provide a steering wheel provided with a damper unit excellent in vibration absorption effect.
- the steering wheel according to the present invention comprises: a core metal member; an airbag module accommodating an air bag cushion and an inflator and connected to the core metal member; and disposed between the core metal member and the airbag module.
- a damper unit includes a buffer member made of an elastic material; an upper support member supporting the buffer member from above; and a lower support member supporting the buffer member from below.
- the buffer member has a flange portion that protrudes in the lateral direction, and the flange portion is held by the upper support member and the lower support member. A space is formed between the flange and at least one of the upper and lower support members.
- the freedom of deformation of the flange portion can be increased, and vibration absorption (damping) performance can be improved.
- the air gap may be formed by a notch formed in the upper support member and / or the lower support member.
- the notch may be formed as an inclined portion which is gradually separated from the flange toward the outside with respect to a plane orthogonal to the axial direction of the pin.
- the notches may be formed at at least four locations on the outer periphery of the flange.
- the notch may be formed in one or both of the lower support member and the upper support member.
- the notch formed in the upper support member and the notch formed in the lower support member may be provided at positions not opposed to each other across the flange.
- the upper and lower notches may be alternately arranged and formed in the circumferential direction.
- FIG. 1 is a perspective view showing the outline of a steering wheel device to which the present invention can be applied, where (a) shows an appearance equipped with an air bag module and (b) shows a state before assembling the air bag module.
- FIG. 2 is a perspective view observed from the back side of the airbag module shown in FIG.
- FIG. 3 is a plan view showing a part (a boss area) of a cored bar member of a steering wheel, in which (a) is viewed from the front side (air bag module side, occupant side), (b) is a rear side (steering Seen from the column side).
- FIG. 4 is a perspective view showing a damper unit used in the airbag apparatus according to the embodiment of the present invention.
- FIG. 5 is an exploded perspective view of the damper unit shown in FIG.
- FIG. 6 shows a state in which the damper unit shown in FIGS. 4 and 5 is inserted into the bearing hole of the core metal member, and corresponds to the AA cross section in FIG. 3 (b).
- FIG. 7A is a perspective view showing the structure of a part (spring holding member) of the damper unit according to the embodiment of the present invention, and shows a state as viewed from below (the core metal side).
- FIG. 7B is a perspective view showing the structure of a part (spring holding member) of the damper unit according to the embodiment of the present invention, as viewed from above.
- FIG. 8 is a perspective view showing a part of the structure of the damper unit according to the embodiment of the present invention.
- FIG. 9 is a perspective view showing a part of the structure of the damper unit according to the embodiment of the present invention, in which the angle to be observed is changed with respect to FIG.
- FIG. 10 is a cross-sectional view showing a part of the structure of a damper unit according to an embodiment of the present invention, wherein (A) is a cross-section (partially omitted) in the AA direction of FIG. Shows a cross section (partly omitted) in the BB direction of FIG. 11A and 11B are cross-sectional views showing a part of the structure of a damper unit according to another embodiment of the present invention.
- the rotation axis of the steering column is taken as the Z axis
- the plane perpendicular to the Z axis is taken as the XY plane.
- the XY plane is often a plane parallel to the rim portion.
- the “rotational direction” means a direction in which the rim (gripping portion) rotates in the XY plane centering on the boss center.
- FIG. 1 is a view schematically showing a steering wheel apparatus (steering wheel 100) according to an embodiment of the present invention.
- the entire steering wheel 100 is illustrated.
- each direction is illustrated on the assumption that the steering wheel 100 attached to the vehicle is in the neutral steering position.
- the Z axis is such that the front wheel direction of a vehicle (not shown) of the steering column (steering shaft) is downward and the steering wheel 100 is upward.
- the steering wheel 100 is installed at the driver's seat of the vehicle, is connected to a steering shaft passing through the inside of a steering column (not shown), and transmits the driver's operation force to a steering gear or the like.
- an airbag module 102 is mounted which functions as a front airbag in an emergency. Under normal conditions, the air bag module 102 also functions as a horn switch pressed by a passenger when the horn sounds.
- FIG. 1 (b) is an exploded view of the steering wheel apparatus 100 of FIG. 1 (a).
- the occupant side of the airbag module 102 is covered with a resin cover 104 that functions as a design surface.
- a box-like housing 106 is provided below the cover 104, in which an air bag cushion (not shown) that inflates and deploys in the event of an emergency is folded and accommodated.
- an inflator 108 (see FIG. 2), which is a gas generator, is also provided.
- gas is supplied from the inflator 108 to the air bag cushion, and the air bag cushion cleaves the cover and inflates and deploys into the compartment space to restrain the occupant.
- the base portion of the steering wheel 100 is constituted by a metal cored bar member 110 made of metal.
- the metal core member 110 roughly includes a central boss area 112, a circular rim 114 gripped by an occupant, and spokes 116a to 116c connecting the boss area 112 and the rim 114.
- the boss area 112 is provided with a shaft hole 118 to which a steering shaft is connected.
- the air bag module 102 has a function as a horn switch as described above, and a function as a module damper mechanism for damping vibration, as well as the function as a front air bag.
- the components realizing the function as the horn switch and the module damper mechanism will be described in detail below.
- FIG. 2 is a view exemplifying the back surface of the airbag module 102 of FIG. 1 (b).
- a plurality of damper units 124 are provided on the back surface 120 of the housing 106.
- the damper unit 124 is a member for elastically attaching the housing 106 to the metal core member 110 (see FIG. 1B), and forms the center of the module damper mechanism.
- the damper units 124 are provided at three locations on both sides in the X-axis direction of the back surface of the housing 106 and on the rear side in the Y-axis direction.
- each of the damper units 124 may be disposed symmetrically with respect to the Y axis (or X axis). Further, the damper unit 124 may be disposed at a total of two locations in the upper and lower portions in the Y-axis direction at the center of the airbag module 102 in the X-axis direction. In addition, each damper unit 124 may be geometrically and asymmetrically arranged in consideration of the balance between the performance requirements (damping performance and horn switch performance) of all the arranged damper units.
- a rod-like pin 126 protrudes from the damper unit 124 toward a boss area 112 (see FIG. 1B) of the cored bar member 110 located on the lower side in the Z-axis direction.
- the pin 126 is inserted into the bearing hole 128 via the collar member 134 (see FIG. 3) of the metal core member 110, and is connected to a rod-like spring 130 described later installed on the back side of the metal core member 110.
- the airbag module 102 is attached to the core metal member 120 by the connection between the pin 126 and the spring 130.
- FIG. 3 is a view exemplifying a boss area 112 of the cored bar member 110 of FIG. 1 (b).
- FIG. 3 (a) shows the core metal member 110 as viewed from the air bag module 102 side
- FIG. 3 (b) shows the core metal member 110 as viewed from the back side of the core metal member 110 of FIG. 4 (a).
- the core metal member 110 is provided with a total of three collar members 134 into which the pins 126 of the damper unit 124 are inserted. These collar members 134 are attached to the bearing holes into which the pins 126 (see FIG. 2) are inserted.
- a rod-like spring (Omega spring) 130 is provided below each bearing hole.
- the rod-like spring 130 is a spring element that supports the pin 126.
- the rod-shaped spring 130 has a shape obtained by bending an elongated metal rod.
- the rod-shaped spring 130 is supported by the rib 150 or the like and installed, but one end thereof is not supported and is a free end 130 a and can be bent.
- the air bag module 102 is detachably mounted on the metal core member 110 by the pin 126 engaging with the free end 130 a of the rod-like spring 130.
- the pin 126 is inserted through the first spring 132 and the collar member 134 (see FIG. 1B) into the cored bar member 110.
- the first spring 132 is coiled and functions as a so-called horn spring, and is disposed between the air bag module 102 and the cored bar member 110 to secure a gap therebetween. Then, the air bag module 102 released from the depression by the occupant at the time of the horn operation is separated from the cored bar member 110 and returned to the original position.
- FIG. 4 is a perspective view showing a damper unit 124 used in the airbag apparatus according to the present invention.
- 5 is an exploded perspective view of the damper unit 124 shown in FIG.
- the damper unit 124 includes a rubber holder plate 202; a rubber member (buffer member) 204 having an elastic force; a rubber holder (upper support member) 206 for holding the rubber member 204; And a support member (lower support member) 208 which holds the upper end of the coil spring 132.
- the pin 126 includes a disk-shaped upper end portion 126a, a cylindrical main portion 126b, and a tip portion 126c having a groove 127 formed on the outer periphery.
- FIG. 6 is a view corresponding to an AA cross section of the bearing hole 128 of the cored bar member 110 of FIG. 3 (b).
- a cross section including the X axis and the Y axis in the damper unit 124 connected to the cored bar member 110 is shown.
- the air bag module 102 is attached to the core metal member 110 by connecting the pin 126 of the damper unit 124 to the rod-like spring 130 on the core metal member 110 side. At this time, the pin 126 is passed through the inside of the coil spring 132, and the coil spring 132 is disposed between the air bag module 102 and the cored bar member 110.
- the air bag module 102 functions as a horn switch by being supported by the coil spring 132.
- the collar member 134 is adapted to support the side surface of the pin 126 inside the bearing hole 128. By installing the collar member 134, the pin 126 can be supported at a higher position than in the case of the cored bar member 110 alone, and the uprightness of the pin 126 can be further enhanced.
- the air bag module 102 when attaching the air bag module 102 to the cored bar member 110, it can be attached to the cored bar member 110 in a state capable of functioning as a horn switch by a simple snap fit only inserting the pins 126 into the cored bar member 110. .
- the damper unit 124 serves as a contact at the time of horn operation, and as a plurality of elements (vibration damping) elastically supporting the air bag module 102 in the vibration damping mechanism. Perform the function of Therefore, there is no need to provide separate members for each function, and the configuration is simplified.
- the air bag module 102 attached to the cored bar member 110 by the snap fit structure can be removed from the cored bar member 110 by a relatively simple operation.
- the rod spring 130 is flexed using a predetermined tool from the back side of the cored bar member 110, and the connection between the rod spring 130 and the pin 126 is released.
- the metal core member 110 of the present embodiment is provided with a structure that contributes to the ease of operation.
- the coil spring 132 is configured to be supported at its upper end by the support member 208.
- the support member 208 is provided with hooks 300 (see FIG. 7) provided at equal intervals in a plane perpendicular to the axial direction of the damper pin 126 in order to support the upper end portion of the coil spring 132.
- FIGS. 7A and 7B are perspective views showing the structure of a part (spring holding member 208) of the damper unit 124, as seen from below (the core 110) (7A), as seen from above (7B)
- FIG. 8 and FIG. 9 are perspective views showing the structure of the spring holding member 208, each showing a state observed from different angles.
- 10A shows a cross section (partially omitted) in the AA direction of FIG. 8
- FIG. 10B shows a cross section (partially omitted) in the BB direction of FIG.
- the rubber member 204 is provided with a flange portion 204a which protrudes in the direction perpendicular to the Z axis.
- the flange portion 204 a is sandwiched between the upper surface (312, 314) of the flange 310 of the spring holding member 208 and the bottom surface 206 a of the rubber holder 206.
- the holding member 208 includes a flange 310 that supports the bottom surface of the rubber member 204.
- the flange 310 includes a flat area 312 extending generally perpendicularly to the axis (Z-axis) of the pin 126 and a sloped area 314 inclined outwardly and downwardly with respect to a plane perpendicular to the Z-axis.
- the inclined region 314 is in a state where a part of the flange 310 is cut away, thereby forming an air gap with the flange portion 204 a of the rubber member 204.
- the flat area 312 and the inclined area 314 are alternately arranged in the circumferential direction.
- FIG. 11 (A) and 11 (B) are cross-sectional views showing a part of the structure of a damper unit according to another embodiment of the present invention, and as in FIG. 10 (A), the AA direction of FIG. Shows a cross section of In the example of FIG. 11A, no notch is present on the spring holding member 208 side, and a notch (inclined portion) 206a is formed on the rubber holder 206 side, so that the flange portion 204a of the rubber member 204 and Form an air gap between the Further, the example of FIG. 11 (B) is a combination of FIG. 10 (A) and FIG. 11 (A), and both the spring holding member 208 and the rubber holder 206 have notches (inclined portions) 314 and 206a. In the upper and lower sides, the void is formed.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Air Bags (AREA)
- Steering Controls (AREA)
Abstract
Description
以下に示す実施例においては、エアバッグモジュール側にダンパユニットを設ける構造を一例として示しているが、本発明はこれに限定されるものではない。例えば、芯金側にダンパユニットを設ける構造や、エアバッグモジュールと芯金の何れに属するか明確でない箇所に設けるような構造にも適用可能である。また、ホーン機構についても芯金側で完結させる構造でも、エアバッグモジュール側で完結させる構造でもよい。また、エアバッグモジュールと芯金との連結についても、特に限定させるものではない。
Claims (12)
- 芯金部材と;
エアバッグクッションおよびインフレータを収容し、前記芯金部材に連結されるエアバッグモジュールと;
前記芯金部材と前記エアバッグモジュールとの間に配置されたダンパユニットとを備え、
前記ダンパユニットは、弾性材料からなる緩衝部材と;前記緩衝部材を上方から支持する上部支持部材と;前記緩衝部材を下方から支持する下部支持部材とを備え、
前記緩衝部材は、横方向に突出したフランジ部を有し、当該フランジ部を前記上部支持部材及び前記下部支持部材によって、挟持する構造であり、
前記上部支持部材及び前記下部支持部材の少なくとも一方と前記フランジとの間に空隙が形成されていることを特徴とするステアリングホイール。 - 前記ダンパユニットは、中心部に貫通するピンを更に備え、
前記緩衝部材、前記上部支持部材、前記下部支持部材は、前記ピンの外側に配置される構造であり、
前記緩衝部材の前記フランジ部は、前記ピンの軸方向と直交する方向に突出することを特徴とする請求項1に記載のステアリングホイール。 - 前記空隙は、前記上部支持部材及び/又は前記下部支持部材に形成された切欠きによって成形されることを特徴とする請求項1又は2に記載のステアリングホイール。
- 前記切欠きは、前記ピンの軸方向と直交する面に対し、外側に向かって前記フランジから徐々に離れるような傾斜部として形成されていることを特徴とする請求項3に記載のステアリングホイール。
- 前記切欠きは、前記フランジの外周に少なくとも4カ所形成されていることを特徴とする請求項3又は4に記載のステアリングホイール。
- 前記切欠きは、前記下部支持部材にのみ形成されていることを特徴とする請求項3乃至5の何れか1項に記載のステアリングホイール。
- 前記切欠きは、前記上部支持部材にのみ形成されていることを特徴とする請求項3乃至5の何れか1項に記載のステアリングホイール。
- 前記切欠きは、前記上部支持部材及び前記下部支持部材の両方に形成されていることを特徴とする請求項3乃至5の何れか1項に記載のステアリングホイール。
- 前記上部支持部材に形成された前記切欠きと、前記下部支持部材に形成された切欠きは、前記フランジを挟んで対向する位置に設けられていることを特徴とする請求項8に記載のステアリングホイール。
- 前記上部支持部材に形成された前記切欠きと、前記下部支持部材に形成された切欠きは、前記フランジを挟んで対向しない位置に設けられていることを特徴とする請求項8に記載のステアリングホイール。
- 請求項1乃至10の何れか1項に記載のステアリングホイールに採用される前記エアバッグモジュール。
- 請求項1乃至10の何れか1項に記載のステアリングホイールに採用される前記ダンパユニット。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/960,597 US11529921B2 (en) | 2018-01-19 | 2019-01-02 | Steering wheel |
EP19741794.2A EP3741647B1 (en) | 2018-01-19 | 2019-01-02 | Steering wheel |
JP2019566404A JP6936876B2 (ja) | 2018-01-19 | 2019-01-02 | ステアリングホイール |
KR1020207022187A KR102523182B1 (ko) | 2018-01-19 | 2019-01-02 | 스티어링 휠 |
CN201980006505.XA CN111556837B (zh) | 2018-01-19 | 2019-01-02 | 方向盘 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2018007736 | 2018-01-19 | ||
JP2018-007736 | 2018-01-19 |
Publications (1)
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WO2019142655A1 true WO2019142655A1 (ja) | 2019-07-25 |
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PCT/JP2019/000004 WO2019142655A1 (ja) | 2018-01-19 | 2019-01-02 | ステアリングホイール |
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US (1) | US11529921B2 (ja) |
EP (1) | EP3741647B1 (ja) |
JP (1) | JP6936876B2 (ja) |
KR (1) | KR102523182B1 (ja) |
CN (1) | CN111556837B (ja) |
WO (1) | WO2019142655A1 (ja) |
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WO2022044668A1 (ja) * | 2020-08-28 | 2022-03-03 | オートリブ ディベロップメント エービー | 車両のステアリングホイール装置 |
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KR102610029B1 (ko) * | 2018-01-19 | 2023-12-05 | 아우토리브 디벨롭먼트 아베 | 스티어링 휠 |
EP3594087B1 (en) * | 2018-07-11 | 2022-01-05 | Autoliv Development AB | Damper mechanism of steering wheel and steering wheel device for vehicle |
JP7347149B2 (ja) * | 2019-11-18 | 2023-09-20 | Joyson Safety Systems Japan合同会社 | ステアリングホイール |
CN112092895A (zh) * | 2020-09-30 | 2020-12-18 | 浙江吉利控股集团有限公司 | 一种汽车方向盘减震单元及汽车方向盘 |
US11603066B2 (en) * | 2021-07-21 | 2023-03-14 | ZF Passive Safety Systems US Inc. | Vibration damper for coupling an airbag module to a vehicle steering wheel |
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Also Published As
Publication number | Publication date |
---|---|
US11529921B2 (en) | 2022-12-20 |
KR102523182B1 (ko) | 2023-04-18 |
EP3741647A4 (en) | 2021-05-26 |
CN111556837B (zh) | 2022-05-10 |
EP3741647A1 (en) | 2020-11-25 |
EP3741647B1 (en) | 2022-11-09 |
US20200346605A1 (en) | 2020-11-05 |
KR20200105881A (ko) | 2020-09-09 |
CN111556837A (zh) | 2020-08-18 |
JPWO2019142655A1 (ja) | 2020-11-19 |
JP6936876B2 (ja) | 2021-09-22 |
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