JPS59110433U

JPS59110433U - Magnetic powder electromagnetic clutch

Info

Publication number: JPS59110433U
Application number: JP413083U
Authority: JP
Inventors: 清仁村田
Original assignee: トヨタ自動車株式会社
Priority date: 1983-01-14
Filing date: 1983-01-14
Publication date: 1984-07-25

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

′第１図は本考案の一実施例である自動車用電磁クラッ
チの断面図であり、第２図はその要部を簡略にして示す
拡大図である。第３図は第１図の実施例における解磁時
の磁粉の状態を示す第２図に　　　′相当する図であり
、第４図は従来のクラッチの第　、３図に相当する図で
ある。第５図及び第６図はそれぞれ励磁時におりる磁粉
の状態を示す第３−及び第４図に相当する図である。第
７図乃至第９図はそれぞれ本考案の他の実施例□を示す
第２図に相当する図である。　　　　　−，１４：ヨーク（駆動部材）、１６：励磁コイル、１８：
内周摩擦面、２０：フロントラビリンス部材、２２：リ
ヤラビリンス部材、２８二ロータ（被駆動部材）、３０
：外周摩擦面、３２：ギャップ、３４：磁粉収容空間、
３６：磁粉、６６：環状凹溝。・第１図第４図1 is a sectional view of an electromagnetic clutch for an automobile, which is an embodiment of the present invention, and FIG. 2 is an enlarged view showing the main parts thereof in a simplified manner. 3 is a diagram corresponding to FIG. 2 showing the state of magnetic particles during demagnetization in the embodiment of FIG. 1, and FIG. 4 is a diagram corresponding to FIGS. 3 and 3 of the conventional clutch. FIGS. 5 and 6 are diagrams corresponding to FIGS. 3 and 4, respectively, showing the state of magnetic particles falling during excitation. FIGS. 7 to 9 are views corresponding to FIG. 2, respectively, showing other embodiments □ of the present invention. −, 14: Yoke (driving member), 16: Excitation coil, 18:
Inner peripheral friction surface, 20: Front labyrinth member, 22: Rear labyrinth member, 28 Two rotors (driven member), 30
: outer peripheral friction surface, 32: gap, 34: magnetic particle accommodation space,
36: Magnetic powder, 66: Annular groove.・Figure 1 Figure 4

Claims

[Claims for Utility Model Registration] A driving member having a cylindrical shape and rotating around a center line, and an outer peripheral friction surface facing the inner peripheral friction surface of the driving member with a predetermined gap therebetween; A labyrinth is formed between the driven member, which is provided concentrically and rotatably relative to the driving member, and which is fixed to the driving member with the gap in the axial direction, thereby forming a labyrinth between the driven member and the driven member. and a pair of labyrinth members made of a high thermal conductivity non-magnetic material that together with the member and the driven member form a substantially sealed annular magnetic particle storage space, and the gap is filled with magnetic particles by magnetic force. In a magnetic particle type electromagnetic clutch of the type in which the rotation of the driving member is transmitted to the driven member, the inner peripheral surface of the driving member is provided with two wires whose mutual spacing is equal to or less than the width dimension of the outer peripheral friction surface. By forming parallel annular grooves, the portion of the inner circumferential surface sandwiched between the annular grooves becomes the inner circumferential friction surface, and the labyrinth member at least A magnetic particle type electromagnetic clutch characterized in that an inner wall surface is formed on a side remote from the inner circumferential friction surface.