PROBLEM TO BE SOLVED: To provide an expansion device which can be achieved by a simple constitution by reducing the number of components.SOLUTION: An expansion device includes: a driving member 26; a rotary member 30 rotatable according to driving of the driving member 26; a movement member 20 for moving according to the rotation of the rotary member 30; and a spiral spring member 28 for connecting the movement member 20 and the rotary member 30. The rotary member 30 is formed in a spiral manner, and has a spiral groove part 58a screwed with the spring member 28. By the spring member 28 screwed with the spiral groove part 58a moving in an axial direction with respect to the rotary member 30 by the rotation of the rotary member 30, the movement member 20 moves.SELECTED DRAWING: Figure 3
【課題】部品点数を減らしてシンプルな構成で実現できる伸縮装置を提供する。【解決手段】伸縮装置は、駆動部材26と、駆動部材26の駆動に応じて回転可能な回転部材30と、回転部材30の回転に応じて移動する移動部材20と、移動部材20と回転部材30を連結する螺旋状のバネ部材28と、を備える。回転部材30は、螺旋状に形成され、バネ部材28と螺合する螺旋溝部58aを有する。螺旋溝部58aに螺合するバネ部材28が回転部材30の回転によって回転部材30に対して軸方向に移動することで、移動部材20が移動する。【選択図】図3
EXPANSION DEVICE
伸縮装置
2016-12-22
Patent
Elektronische Ressource
Japanisch
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