JPS62204031U

JPS62204031U -

Info

Publication number: JPS62204031U
Application number: JP9218386U
Authority: JP
Priority date: 1986-06-17
Filing date: 1986-06-17
Publication date: 1987-12-26

Description

[Brief explanation of the drawing]

第１図は本考案に基づくスプリングクラツチの
要部断面図である。第２図は、本考案に基づくス
プリングクラツチの第２の実施例を示す要部断面
図である。第３図は第２の実施例の―線につ
いて見た一部模式的に示す断面図である。第４図
は、本考案に基づくスプリングクラツチの第３の
実施例を示す要部断面図である。１……固定軸、２……ギヤ、２ａ……延長部、
３……ギヤ、３ａ……延長部、４……駆動ギヤ、
５……従動ギヤ、６……コイルばね、６ａ……端
部、６ｂ……大径部、６ｃ……遊端部、７……ス
リーブ、７ａ……ラチエツト歯、７ｂ……切欠部
、８……リング部材、８ａ……ラチエツト爪、９
……コイルばね、１０……バイアスばね、１５…
…爪部材、１５ａ……基端部、１５ｂ……遊端部
、１６……フレーム、１７……ラチエツト爪、１
８……バイアスばね、１９……ブラケツト、２１
……第２のコイルばね、２１ａ，２１ｂ……端部
、２２……窪み、２３……孔。 FIG. 1 is a sectional view of a main part of a spring clutch based on the present invention. FIG. 2 is a sectional view of a main part of a second embodiment of the spring clutch based on the present invention. FIG. 3 is a partially schematic cross-sectional view of the second embodiment taken along line -. FIG. 4 is a sectional view of a main part of a third embodiment of a spring clutch based on the present invention. 1...Fixed shaft, 2...Gear, 2a...Extension part,
3...Gear, 3a...Extension part, 4...Drive gear,
5... Driven gear, 6... Coil spring, 6a... End, 6b... Large diameter part, 6c... Free end, 7... Sleeve, 7a... Ratchet tooth, 7b... Notch, 8 ...Ring member, 8a...Ratchet claw, 9
...Coil spring, 10...Bias spring, 15...
...Claw member, 15a... Base end, 15b... Free end, 16... Frame, 17... Ratchet claw, 1
8... Bias spring, 19... Bracket, 21
... second coil spring, 21a, 21b ... end, 22 ... recess, 23 ... hole.

Claims

[Claims for Utility Model Registration] (1) A spring clutch having input-side and output-side rotating members that are coaxially provided and are relatively rotatable, and a coil spring wound around both the rotating members. In the disconnection device, the disconnection device is deformed in a direction to connect the spring clutch at a first temperature and at a second temperature.
spring means made of at least one shape memory alloy that can be deformed in a direction to release said connection at a temperature of A spring clutch disconnecting device characterized by having: (2) The disconnection device includes a rotatable sleeve that surrounds the coil spring in a non-contact manner and engages one end of the coil spring, and has ratchet teeth formed on its outer peripheral surface, and a rotatable sleeve that engages the ratchet teeth. a ring member formed with matable ratchet pawls and slidably fitted on the outer peripheral surface of the sleeve, the spring means and the bias spring means being attached to the ring member in opposite directions; A spring clutch disconnecting device according to claim 1, characterized in that it is provided to apply a resilient force. (3) The disconnection device includes a rotatable sleeve that surrounds the coil spring in a non-contact manner and engages one end of the coil spring, and has ratchet teeth formed on the outer peripheral surface, and the spring means has a ratchet pawl that can engage and disengage from the ratchet teeth, and the bias spring means elastically biases the ratchet pawl in a direction to engage with the ratchet teeth. A spring clutch disconnecting device according to item 1. (4) The coil spring is wound relatively loosely with one end fixed to one rotating member, and has an action as the bias spring means, and the spring means surrounds the coil spring. The coil spring is wound into a coil shape so as to be wound, one end is engaged with one rotating member, and the other end is engaged with the free end of the coil spring in the direction in which the coil spring is wound. A spring clutch disconnecting device according to claim 1, which is a utility model.