JP7213490B2 - マッサージ装置のスプロケット伝達機構 - Google Patents
マッサージ装置のスプロケット伝達機構 Download PDFInfo
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- JP7213490B2 JP7213490B2 JP2019087428A JP2019087428A JP7213490B2 JP 7213490 B2 JP7213490 B2 JP 7213490B2 JP 2019087428 A JP2019087428 A JP 2019087428A JP 2019087428 A JP2019087428 A JP 2019087428A JP 7213490 B2 JP7213490 B2 JP 7213490B2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/06—Gearings for conveying rotary motion by endless flexible members with chains
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H7/00—Devices for suction-kneading massage; Devices for massaging the skin by rubbing or brushing not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H15/00—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains
- A61H15/0078—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains power-driven
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H7/00—Devices for suction-kneading massage; Devices for massaging the skin by rubbing or brushing not otherwise provided for
- A61H7/007—Kneading
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
- F16H19/06—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H7/00—Devices for suction-kneading massage; Devices for massaging the skin by rubbing or brushing not otherwise provided for
- A61H7/007—Kneading
- A61H2007/009—Kneading having massage elements rotating on parallel output axis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H15/00—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains
- A61H2015/0007—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains with balls or rollers rotating about their own axis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H15/00—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains
- A61H2015/0007—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains with balls or rollers rotating about their own axis
- A61H2015/0014—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains with balls or rollers rotating about their own axis cylinder-like, i.e. rollers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H15/00—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains
- A61H2015/0007—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains with balls or rollers rotating about their own axis
- A61H2015/0014—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains with balls or rollers rotating about their own axis cylinder-like, i.e. rollers
- A61H2015/0021—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains with balls or rollers rotating about their own axis cylinder-like, i.e. rollers multiple on the same axis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/01—Constructive details
- A61H2201/0119—Support for the device
- A61H2201/0138—Support for the device incorporated in furniture
- A61H2201/0142—Beds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/01—Constructive details
- A61H2201/0119—Support for the device
- A61H2201/0138—Support for the device incorporated in furniture
- A61H2201/0149—Seat or chair
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/12—Driving means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/12—Driving means
- A61H2201/1207—Driving means with electric or magnetic drive
- A61H2201/1215—Rotary drive
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/14—Special force transmission means, i.e. between the driving means and the interface with the user
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/14—Special force transmission means, i.e. between the driving means and the interface with the user
- A61H2201/1481—Special movement conversion means
- A61H2201/149—Special movement conversion means rotation-linear or vice versa
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/16—Physical interface with patient
- A61H2201/1657—Movement of interface, i.e. force application means
- A61H2201/1664—Movement of interface, i.e. force application means linear
- A61H2201/1669—Movement of interface, i.e. force application means linear moving along the body in a reciprocating manner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
- F16H19/06—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member
- F16H2019/0613—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member the flexible member being a toothed belt or chain engaging a rack
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
- F16H19/06—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member
- F16H2019/0668—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member with open loop, e.g. with the free ends of the flexible member fixed to the casing, e.g. when the drive means are arranged on the carriage
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pain & Pain Management (AREA)
- Physical Education & Sports Medicine (AREA)
- Rehabilitation Therapy (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Epidemiology (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Dermatology (AREA)
- Mechanical Engineering (AREA)
- Massaging Devices (AREA)
Description
2 椅子
3 駆動ボックス
31 駆動軸
311 駆動スプロケット
312 位置限定ギア
32 従動スプロケット
3A マッサージユニット
4 変位ユニット
41 開口部
5 チェーン
R1 椅子
R11 ストッパー
R2 ベッド
6 駆動ボックス
61 駆動軸
611 スプロケット
611A サブギア
62 従動軸
621 スプロケット
621A 伝達サブギア
63 伝達ギア
Claims (5)
- 単軸又は2軸のモーターにより駆動軸を駆動させ、駆動軸の駆動回転動力を同期で出力させる駆動ボックスと、
前記駆動軸の末端を枢着させて定位させ、且つ上下両端には開口部が設けられる左右1対の中空変位ユニットと、
椅子またはベッドの内部の上下両端に固定され、左右に各々設置される1対のチェーンと、
を備え、
前記モーターが単軸である場合、前記駆動軸には、各変位ユニット内の枢着位置の内側に、1つの駆動スプロケットが設けられ、前記1つの駆動スプロケットの両側には、従動スプロケットが枢設され、前記1つの駆動スプロケット及び2つの従動スプロケットが連続的に前記チェーンと歯合され、曲がりくねり可能なチェーンが変位ユニットの内側にそれぞれ進入し、曲がりくねりながら前記1つの駆動スプロケット及び2つの従動スプロケットを通過し、
前記モーターが2軸である場合、前記駆動軸には、各変位ユニット内の枢着位置の内側に、2つの駆動スプロケットが設けられ、前記2つの駆動スプロケットの間には、1つの従動スプロケットが枢設され、前記2つの駆動スプロケット及び1つの従動スプロケットが連続的に前記チェーンと歯合され、曲がりくねり可能なチェーンが変位ユニットの内側にそれぞれ進入し、曲がりくねりながら前記2つの駆動スプロケット及び1つの従動スプロケットを通過し、
前記駆動軸が正方向または反対方向に駆動回転することにより、駆動スプロケット及び従動スプロケットのチェーン上での歯合位置が転換され、変位ユニットが移動可能となり、
前記駆動軸に設けたマッサージユニットが前記駆動スプロケットの駆動回転動力を受けて移動することを特徴とするマッサージ装置のスプロケット伝達機構。 - 前記従動スプロケットには各変位ユニットに枢設された従動軸が設けられ、該従動軸にもマッサージユニットが設けれらていることを特徴とする請求項1に記載のマッサージ装置のスプロケット伝達機構。
- 前記各変位ユニット内に、固定軸を枢設させる2つの位置限定ギアをさらに備え、
前記モーターが単軸である場合、前記位置限定ギアは、前記2つの従動スプロケットに対して上下方向外側に位置し、
前記モーターが2軸である場合、前記位置限定ギアは、前記2つの駆動スプロケットに対して上下方向外側に位置し、
前記位置限定ギアのギア面の後側はチェーンの前側に歯合するように当接し、
チェーンの経路及び張力が安定する条件下でチェーンと位置限定ギア、駆動スプロケット及び従動スプロケットとが連続的に歯合することを特徴とする請求項1又は2に記載のマッサージ装置のスプロケット伝達機構。 - 椅子またはベッドの中段の湾曲部位には2つの前記チェーンの中段前方に位置される位置限定ストッパーが更に横設され、
前記2つのチェーンの中段が前記位置限定ストッパーにより湾曲されて制限され、その下方に、湾曲の度合いに合わせて、前記変位ユニットを前記位置限定ストッパーに当接させ通過させることを特徴とする請求項1~3いずれかに記載のマッサージ装置のスプロケット伝達機構。 - 前記モーターが単軸であり、
前記駆動軸にサブギアが設けられ、
前記従動スプロケットには各変位ユニットに枢設された従動軸が設けられ、
前記従動軸に2つの伝達サブギアが設けられ、
前記サブギアと前記伝達サブギアの間に伝達ギアが設けられ、前記サブギアが前記伝達ギアを介して前記伝達サブギアに歯合され、
前記駆動軸の駆動回転動力が、前記サブギア、伝達ギア、及び伝達サブギアを介して、従動軸に伝達されることを特徴とする請求項1に記載のマッサージ装置のスプロケット伝達機構。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW107131395A TWI677335B (zh) | 2018-09-05 | 2018-09-05 | 按摩裝置之鏈輪傳動機構 |
TW107131395 | 2018-09-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2020036872A JP2020036872A (ja) | 2020-03-12 |
JP7213490B2 true JP7213490B2 (ja) | 2023-01-27 |
Family
ID=69019125
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019087428A Active JP7213490B2 (ja) | 2018-09-05 | 2019-05-07 | マッサージ装置のスプロケット伝達機構 |
Country Status (5)
Country | Link |
---|---|
US (1) | US11400013B2 (ja) |
JP (1) | JP7213490B2 (ja) |
KR (1) | KR200495892Y1 (ja) |
CN (2) | CN110878817B (ja) |
TW (1) | TWI677335B (ja) |
Family Cites Families (25)
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US3675644A (en) * | 1970-02-02 | 1972-07-11 | Joseph F Laskowitz | Massage apparatus |
GB1413209A (en) * | 1973-10-19 | 1975-11-19 | Coal Industry Patents Ltd | Mineral mining equipment |
JPS5348801Y2 (ja) * | 1976-08-31 | 1978-11-22 | ||
JPS601701Y2 (ja) * | 1979-11-20 | 1985-01-18 | 二千武 稲田 | マツサ−ジ機 |
JPS6130678Y2 (ja) * | 1979-12-28 | 1986-09-08 | ||
JPS56125226U (ja) * | 1980-02-21 | 1981-09-24 | ||
DE3303925C2 (de) * | 1983-02-05 | 1985-03-07 | Heinz Georg Hünibach Thun Baus | Massageeinrichtung |
US4960110A (en) * | 1988-04-15 | 1990-10-02 | Kabushiki Kaisha Fuji Iryoki | Bed-type massaging apparatus |
JPH042662Y2 (ja) * | 1989-09-12 | 1992-01-29 | ||
JPH08121558A (ja) * | 1994-10-20 | 1996-05-14 | Sony Corp | 駆動機構 |
JPH08126673A (ja) * | 1994-10-31 | 1996-05-21 | Koei Tsusho Kk | ローラーマッサージ器 |
TW391252U (en) * | 1999-09-07 | 2000-05-21 | Rui Suei Internat Co Ltd | Massaging bed |
CN2423884Y (zh) * | 2000-06-06 | 2001-03-21 | 巫东和 | 一种利用循环式驱动并可作直向移动往复的按摩装置 |
US6402709B1 (en) * | 2000-06-29 | 2002-06-11 | Dong-Her Wu | Cyclically driven, straightly and reciprocally moving massage device |
US6409689B1 (en) * | 2000-10-23 | 2002-06-25 | Peter Chen | Foldable massaging mattress |
JP2003070860A (ja) * | 2001-09-05 | 2003-03-11 | Atex:Kk | マッサージ機 |
TW200423920A (en) * | 2003-05-05 | 2004-11-16 | Jing-Yau Liang | Roller-type massage mechanism |
US7037279B2 (en) * | 2003-05-27 | 2006-05-02 | Hakjin Kim | Lie-down massager |
US7052477B2 (en) * | 2003-10-14 | 2006-05-30 | Dong-Her Wu | Steering mechanism of a massage machine |
CN201147465Y (zh) * | 2008-01-15 | 2008-11-12 | 东莞威德电子科技有限公司 | 背部曲线锤打式按摩结构 |
US20090301237A1 (en) * | 2008-06-10 | 2009-12-10 | Everman Michael R | Positioner utilizing engaged toothed gear belts, one static and one dynamic |
CN201481736U (zh) * | 2009-07-21 | 2010-05-26 | 台生实业股份有限公司 | 可快速拆卸维护的按摩装置 |
US10849819B2 (en) * | 2013-12-11 | 2020-12-01 | Luraco, Inc. | System and method for body stretching by massage chair |
CN107242966A (zh) * | 2017-05-22 | 2017-10-13 | 林学金 | 一种按摩椅 |
CN207712813U (zh) * | 2017-12-29 | 2018-08-10 | 钟庆华 | 防打滑链轮传动系统 |
-
2018
- 2018-09-05 TW TW107131395A patent/TWI677335B/zh active
-
2019
- 2019-04-18 CN CN201910310784.0A patent/CN110878817B/zh active Active
- 2019-04-18 CN CN201920525735.4U patent/CN209892702U/zh active Active
- 2019-04-22 US US16/390,038 patent/US11400013B2/en active Active
- 2019-05-07 JP JP2019087428A patent/JP7213490B2/ja active Active
- 2019-05-15 KR KR2020190001969U patent/KR200495892Y1/ko active IP Right Grant
Also Published As
Publication number | Publication date |
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KR20200000591U (ko) | 2020-03-16 |
CN209892702U (zh) | 2020-01-03 |
JP2020036872A (ja) | 2020-03-12 |
CN110878817B (zh) | 2023-04-04 |
TWI677335B (zh) | 2019-11-21 |
TW202010485A (zh) | 2020-03-16 |
US11400013B2 (en) | 2022-08-02 |
KR200495892Y1 (ko) | 2022-09-14 |
US20200069506A1 (en) | 2020-03-05 |
CN110878817A (zh) | 2020-03-13 |
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