JP2001141036A5 - - Google Patents

Description

[Claims]
And 1. A alternator rotation axis, by fitting the inner of the rotating shaft to the center hole, and fitted supporting the sleeve to the distal end portion of the rotary shaft, arranged around the sleeve in the sleeve and concentric The driven pulley is provided between the axial intermediate portion of the outer peripheral surface of these sleeves and the axial intermediate portion of the inner peripheral surface of the driven pulley, and the driven pulley tends to rotate relative to the sleeve in a predetermined direction. A one-way clutch that allows the rotational force to be freely transmitted between the driven pulley and the sleeve, and the outer peripheral surface of the sleeve and the driven pulley at positions that sandwich the one-way clutch from both sides in the axial direction. In an alternator drive device provided between the inner peripheral surface and provided with a pair of support bearings that support the radial load applied to the driven pulley and allow the relative rotation of these sleeves and the driven pulley freely. Of the central hole of the sleeve, the portion excluding the tip portion, which is the end portion opposite to the alternator, is a circular hole portion in which the rotation shaft fits rotatably without rattling, and is the remaining portion. The tip portion is an engaging hole portion having a non-circular cross-sectional shape and a diameter of the maximum inscribed circle larger than the inner diameter of the circular hole portion, and a step is formed at the boundary portion between the circular hole portion and the engaging hole portion. There is a portion, and a threaded portion is provided coaxially with the rotating shaft on the tip surface of the rotating shaft, and the screw member screwed into the threaded portion can be freely abutted against the stepped portion. A flange portion is fixedly fixed, and the outer peripheral edge of the flange portion engages with the inner peripheral surface of the engagement hole portion so as to be rotatable in the axial direction of the rotation axis and non-rotatably relative to the sleeve. An alternator drive device characterized in that the sleeve is fixed to the tip of the rotating shaft by screwing the screw member into the screw portion and further tightening the screw member.

0012
[Means for solving problems]
The alternator drive device of the present invention is configured by incorporating the conventionally known one-way clutch built-in pulley device for the alternator as described above, and is the same as the alternator drive device, that is, the rotation shaft of the alternator and its center. by fitting the inner of the rotating shaft hole, and fitted supporting the sleeve to the distal end portion of the rotary shaft, and a driven pulley disposed on the sleeve and concentric with the periphery of the sleeve, the axis of the outer peripheral surface of the sleeve It is provided between the intermediate portion in the direction and the intermediate portion in the axial direction of the inner peripheral surface of the driven pulley, and is provided between the driven pulley and the sleeve only when the driven pulley tends to rotate relative to the sleeve in a predetermined direction. A one-way clutch that freely transmits the rotational force in the shaft and a position that sandwiches the one-way clutch from both sides in the axial direction are provided between the outer peripheral surface of the sleeve and the inner peripheral surface of the driven pulley. It is provided with a pair of support bearings that allow the relative rotation of these sleeves and the driven pulley while supporting the radial load applied to the clutch.

[Explanation of symbols]
1 Alternator 2 Housing 3 Rotating shaft 4 Rolling bearing 5 Rotor 6 Clutch 7, 7a, 7b Driven pulley 8, 8a, 8b Sleeve 9, 9a Center hole 10 Threaded hole 11, 11a Engagement hole 12 Support bearing 13 One direction Clutch 14 Clutch inner ring 15 Cam surface 16 Roller 17 Clutch cage 18 Endless belt 19, 19a Circular hole 20 Step 21 Screw hole 22 Suppressor bolt 23 Head 24 Flange 25 Thread 26 Support bearing 27 One-way clutch 28 Recessed groove 29 Outer ring raceway 30 Outer ring for bearing 31 Inner ring raceway 32 Inner ring for bearing 33 Ball 34 Cage for bearing 35 Step part 36 Rolling bearing 37 Inner ring 38 Seal ring 39 Cage for clutch 40 Cam 41 Gata spring 42 Male thread part 43 Retaining nut 44 One-way clutch 45 Clutch outer ring 46 Clutch inner ring 47 Roller 48 Clutch cage 49 Cam surface 50 Recess 51 Cylindrical gap 52 Small diameter part 53 Large diameter part 54 Step part

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