JPS61137131U

JPS61137131U -

Info

Publication number: JPS61137131U
Application number: JP1963485U
Authority: JP
Priority date: 1985-02-14
Filing date: 1985-02-14
Publication date: 1986-08-26

Description

[Brief explanation of the drawing]

第１図はこの考案による過負荷防止電磁クラツ
チの一例を示す上半部縦断側面図、そして第２図
は従来の過負荷防止電磁クラツチの縦断側面図で
ある。図面において、１…回転軸、２…接極子、３，１１…軸受、４
…スプロケツト、５…トリガ機構、６…ボール、
７…回転部材、８…ばね、９…電磁コイル、１０
…フイールドコア、１２…励磁装置、１３…第一
の回転部材、１４…軸受、１５…取付板、１６…
当板、１７…スナツプリング、１８…可動部材、
１９…非磁性材製軸受、２０…従動部材、２１…
カム作動機構、２２…永久磁石、２３…皿ばね、
Ｓ…空隙、φ…磁束。 FIG. 1 is a vertical sectional side view of the upper half of an example of the overload prevention electromagnetic clutch according to the invention, and FIG. 2 is a vertical sectional side view of a conventional overload prevention electromagnetic clutch. In the drawings, 1... Rotating shaft, 2... Armature, 3, 11... Bearing, 4
... Sprocket, 5... Trigger mechanism, 6... Ball,
7... Rotating member, 8... Spring, 9... Electromagnetic coil, 10
...Field core, 12...Exciter, 13...First rotating member, 14...Bearing, 15...Mounting plate, 16...
Contact plate, 17... Snap spring, 18... Movable member,
19... Bearing made of non-magnetic material, 20... Driven member, 21...
Cam operating mechanism, 22... permanent magnet, 23... disc spring,
S...air gap, φ...magnetic flux.

Claims

[Scope of utility model registration request]

(a) It is disposed on the rotating shaft directly facing a first rotating member that has a built-in fixed excitation device and is freely rotatably supported on the rotating shaft, and the inner circumferential surface of the rotating member is an annular second rotating member spline-fitted to the outer peripheral surface; (b) a bearing made of a non-magnetic material fitted onto the rotating shaft; and (c) freely rotatable on the rotating shaft via the bearing. , and a third rotating member supported in an axially immovable state and having an outer circumferential portion removably engaged with the outer circumferential portion of the second rotating member, in an annular space surrounded by ( d) An overload prevention electromagnetic clutch in which an annular permanent magnet is inserted between the engaging outer peripheral portions of the second and third rotating members through a gap or a ring member made of a non-magnetic material. The engagement between the second rotating member and the third rotating member is formed by the permanent magnet, and the magnetic attraction of magnetic flux passing through the permanent magnet and the second and third rotating members is provided. The second rotating member and the third rotating member are maintained by a force and released by an excessive load applied to either the second or third rotating member. said overload-preventing electromagnetic clutch, in which torque transmission and disconnection are achieved;