Electromagnetic clutch of a brushless control-by-wire centrifugal ball arm engagement device

Patent metadata

Field	Value
Publication number	US-10830289-B2
Application number	US-201715772408-A
Country	US
Kind code	B2
Filing date	May 22, 2017
Priority date	Jan 9, 2017
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

An electromagnetic clutch of a brushless control-by-wire centrifugal ball arm engagement device includes a brushless electromagnet, a thrust pressing disc, a driven inner-spline hub, a control-by-wire drive disc, a centrifugal ball arm hollow disc, centrifugal ball arm pins, centrifugal ball arms, centrifugal balls, a magnetic conductive force transmitting disk, a drive shaft; once the brushless electromagnet is energized, the centrifugal ball arms and the centrifugal balls each make a circular motion around the centrifugal ball arm pin outwardly along the smooth surface of the thrust pressing disc by the action of centrifugal force produced by them when rotating with high speed. The component of the centrifugal force in the direction of the central axis of the centrifugal ball arm hollow disc drives the thrust pressing disc to compress the outer-spline-groove steel sheets and the inner-spline-groove friction discs with each other, which makes the clutch engaged.

First claim

The invention claimed is:

1. An electromagnetic clutch of a brushless control-by-wire centrifugal ball arm engagement device, which comprises an input shaft ( 11 ), an output shaft ( 21 ), an output shaft connecting disc ( 21 P) and a brushless electromagnet ( 1 WT), and is characterized in that:
the electromagnetic clutch further comprises a brushless control-by-wire centrifugal ball arm engagement device ( 10 );
the brushless control-by-wire centrifugal ball arm engagement device ( 10 ) comprises a thrust pressing disc ( 10 c ), a driven inner-spline hub ( 10 d ), a control-by-wire driving disc ( 10 g ), a preloading spring ( 10 i ), a centrifugal ball arm hollow disc ( 10 j ), centrifugal ball arm pins ( 10 k ), centrifugal ball arms ( 10 l ), centrifugal balls ( 10 m ), a magnetic conductive force transmitting disk ( 10 q ), centrifugal ball sockets ( 10 r ) and a drive shaft ( 10 Z);
the drive shaft ( 10 Z) has one end fixedly connected to one end of the input shaft ( 11 );
the centrifugal ball arm hollow disc ( 10 j ) is installed and supported on the intermediate journal of the drive shaft ( 10 Z) by a bearing, and is provided with an outer-spline grooves of centrifugal ball arm hollow disc ( 10 ja ) on an outer circumferential surface of one end of the centrifugal ball arm hollow disc ( 10 j ) close to the input shaft ( 11 );
the control-by-wire drive disc ( 10 g ) is arranged on the outer-spline grooves of centrifugal ball arm hollow disc ( 10 ja ) by its inner-spline grooves of the control-by-wire drive disc ( 10 g );
the preloading spring ( 10 i ) is disposed between the end of the outer-spline grooves of centrifugal ball arm hollow disc ( 10 ja ) and the inside end face of the control-by-wire drive disc ( 10 g );
the control-by-wire drive disc ( 10 g ) is further provided with a friction driving end face ( 10 ga ) at one end face of the control-by-wire drive disc ( 10 g ) close to the input shaft ( 11 );
the centrifugal ball arm hollow disc ( 10 j ) is provided with a plurality of centrifugal ball arm holders which are evenly arranged in the circumferential direction at the other end of the centrifugal ball arm hollow disc ( 10 j ) away from the input shaft ( 11 ) the centrifugal ball arm holders each having one centrifugal ball arm pin ( 10 k ) fixedly mounted thereon;
the centrifugal ball arm ( 10 l ) has one end mounted on the intermediate journal of the centrifugal ball arm pin ( 10 k ) by smooth bearing hole of the centrifugal ball arm ( 10 l ) and is rotatable freely around the centrifugal ball arm pin ( 10 k );
the centrifugal ball arm ( 10 l ) has the other end provided with one centrifugal ball socket ( 10 r ), in each of which a centrifugal ball ( 10 m ) is provided and capable of rolling freely;
the thrust pressing disc ( 10 c ) has one end face being a smooth end surface ( 10 ca ), on which the centrifugal ball ( 10 m ) each abuts against, and further has an outer-spline grooves provided on an outer circumferential surface of the thrust pressing disc ( 10 c ), the outer-spline grooves of the thrust pressing disc ( 10 c ) being axially in sliding engagement with the inner-spline grooves of the driven inner-spline hub ( 10 d );
the driven inner-spline hub ( 10 d ) has an end face, which is away from the input shaft ( 11 ), fixedly connected to the output shaft connecting disc ( 21 P), the output shaft connecting disc ( 21 P) being fixedly mounted on the output shaft ( 21 );
the magnetic conductive force transmitting disk ( 10 q ) is fixedly mounted on the journal of the drive shaft ( 10 Z) by a bearing hole of the center hub of magnetic conductive force transmitting disk ( 10 qa );
the magnetic conductive force transmitting disk ( 10 q ) is provided with an outer disc of magnetic conductive force transmitting disk ( 10 qb ) one end face of the outer disc of magnetic conductive force transmitting disk ( 10 gb ) close to the friction driving end face ( 10 ga ) keeps an air gap from the friction driving end face ( 10 ga ) by the action of the preloading spring ( 10 i ), the other end face of the outer disc of magnetic conductive force transmitting disk ( 10 gb ) is always keeping an air gap from a magnetic pole end face ( 1 WTa) of the brushless electromagnet ( 1 WT).

Assignees

• Univ Shandong Technology

Inventors

• Qu Jinyu
• Ren Chuanbo
• Guo Zhengbin
• Zhang Pan
• Qi Chen
• Lv Nana

Classifications

• F16D43/10 Primary

  the centrifugal masses acting directly on the pressure ring, no other actuating mechanism for the pressure ring being provided · CPC title

• F16D27/112

  with flat friction surfaces, e.g. discs · CPC title

• F16D27/14

  Details · CPC title

• F16D27/115

  with more than two discs, e.g. multiple lamellae · CPC title

• F16D27/04 Primary

  with axially-movable friction surfaces · CPC title