JPS59107340U - Magnetic powder electromagnetic clutch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

1 and 2 show an example in which the present invention is applied to an automobile clutch. FIG. 1 is a front view showing the right half of the clutch with the clutch housing removed;
The figure is a cross-sectional view taken along the line ■-■ in FIG. 3 is a diagram showing a part of the outer peripheral surface of the yoke of the clutch shown in FIG. 1. FIG. 4 to 6 are views corresponding to FIGS. 1 and 3, respectively, showing other aspects of the air circulation passage in the embodiment of FIG. 1. FIG. 7 is a sectional view showing another aspect of the shape of the air circulation passage in the embodiment of FIG. 1. 8 and 9 are a front view and a sectional view showing the right half of a flywheel in another embodiment of the present invention. FIG. 10 is a perspective view showing a state in which a yoke is attached to the flywheel of FIG. 8. 11 and 12 are diagrams showing other aspects of the cutout and the air circulation passage in the embodiment of FIG. 8, respectively. 8: flywheel (driving member), 14: yoke (electromagnetic member), 15: cylindrical part, 16: excitation coil, 18: inner peripheral friction surface, 28: rotor (driven member), 30: outer peripheral friction surface, 36: Ferromagnetic material powder (magnetic powder), 62: Air circulation passage, 72 two notches. Figure 8 Figure 9

Claims (2)

[Scope of utility model registration request] (1) A drive member that has a disk shape and is driven to rotate around a central axis, and an electromagnetic member that has a thick cylindrical shape, is fixed to one surface of the drive member, and has an excitation coil inside;
A driven member is provided inside the electromagnetic member and is provided concentrically and relatively rotatably with the electromagnetic member, and the inner peripheral friction surface of the electromagnetic member and the outer peripheral friction surface of the driven member are connected by excitation of the excitation coil. In a magnetic particle type electromagnetic clutch of the type in which magnetic powder is filled between and the rotation of the driving member is transmitted to the driven member, the driving member is provided with a magnetic material that contacts and covers the outer peripheral surface of the electromagnetic member. A cylindrical part made of aluminum is integrally provided, and air is provided between the cylindrical part and the electromagnetic member with openings at both ends in a direction parallel to or inclined to the central axis of the drive member. A magnetic particle type electromagnetic clutch characterized in that a circulation passage is formed, and cooling air is made to flow through the air circulation passage as the drive member rotates. (2) The cylindrical portion of the driving member has a plurality of 62H notches cut in the axial direction from the tip edge of the cylindrical portion in the circumferential direction, and the air circulation passage is formed inside the notch. Utility model registration for a wall surface that is formed in a direction along a portion that faces the relative airflow generated as the rotating member rotates, or that is formed in a direction that intersects with and opens into the portion. A magnetic particle type electromagnetic clutch according to claim 1.