JOINT DEVICE AND GEAR SET

To provide a joint device which can transmit a large torque and has rotation 3 degree of freedom.SOLUTION: A joint device 10 includes: a holder 20; a spherical gear 30 which has teeth obtained by cutting a contour of a spur gear around a first earth axis and a second earth axis, and is connected wit...

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Bibliographic Details
Main Authors TADAKUMA RIICHIRO, ABE KAZUKI
Format Patent
LanguageEnglish
Japanese
Published 23.12.2021
Subjects
CHAMBERS PROVIDED WITH MANIPULATION DEVICES
HAND TOOLS
MANIPULATORS
PERFORMING OPERATIONS
PORTABLE POWER-DRIVEN TOOLS
TRANSPORTING
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Summary:To provide a joint device which can transmit a large torque and has rotation 3 degree of freedom.SOLUTION: A joint device 10 includes: a holder 20; a spherical gear 30 which has teeth obtained by cutting a contour of a spur gear around a first earth axis and a second earth axis, and is connected with an output member 12; a first driving unit 40 which is provided on the holder 20 and drives the spherical gear 30; and a second driving unit 60 which is provided on the holder 20 and drives the spherical gear 30. A saddle-like gear provided on the driving unit 40 (60) can always restrict two among the rotation 3 degree of freedom of the spherical gear by three interactions including gear rotation and axial rotation for transmitting force, and a lateral slide for not transmitting the force.SELECTED DRAWING: Figure 1 【課題】大きなトルクを伝えることができる回転３自由度の関節装置を提供する。【解決手段】関節装置１０は、ホルダー２０と、平歯車の輪郭を第１地軸まわり及び第２地軸まわりにそれぞれ切った歯を有すると共に出力部材１２が接続された球状歯車３０と、ホルダー２０に設けられ、球状歯車３０を駆動する第１駆動ユニット４０と、ホルダー２０に設けられ、球状歯車３０を駆動する第２駆動ユニット６０と、を備えている。駆動ユニット４０（６０）に設けられた鞍状歯車は、力を伝達する歯車回転及び軸回転と、力を伝達しない横スライドという３つの相互作用によって、球状歯車の回転３自由度のうち２つを常に拘束可能とする。【選択図】図１
Bibliography:Application Number: JP20200099681