AU2017100781A4

AU2017100781A4 - Easily-assembled carbon dust isolation structure for a rear end cover brush carrier of a motor

Info

Publication number: AU2017100781A4
Application number: AU2017100781A
Authority: AU
Inventors: Min ZHAN
Original assignee: Zhejiang Linix Motor Co Ltd
Current assignee: Zhejiang Linix Motor Co Ltd
Priority date: 2017-06-17
Filing date: 2017-06-17
Publication date: 2017-07-20
Anticipated expiration: 2025-06-17

Abstract

TITLE: EASILY-ASSEMBLED CARBON DUST ISOLATION STRUCTURE FOR A REAR END COVER BRUSH CARRIER OF A MOTOR Abstract An easily-assembled carbon dust isolation structure for a rear end cover brush carrier of a motor, comprising a rear end cover brush carrier plate and a bearing; a bearing holding hole for holding the bearing is formed in the center of the rear end cover brush carrier plate; an annular baffle, which extends radially and inward, is formed in the bearing holding hole, and the bearing is held in the bearing holding hole; the rear end cover brush carrier plate is provided with a bearing cover plate, and the bearing cover plate is coordinated with and fixed to the rear end cover brush carrier plate so as to confine the bearing between the annular baffle and the bearing cover plate; a through hole, through which a rotating shaft passes, is formed on the bearing cover plate; a carbon dust block which is of an enclosed structure is formed on an outer end face of the bearing cover plate; the through hole is located in the carbon dust block; and the carbon dust block, the height of which is less than a distance between an inner end face of a brush holder and the bearing cover plate, extends in the axial direction of the rotating shaft; several open slots, which run through the rear end cover brush carrier plate in the axial direction of the rotating shaft, are formed on an outer side of the rear end cover brush carrier plate opposite to the bearing holding hole; several snap pins, axes of which are annularly arranged at intervals around an axis of the rotating shaft, are formed on a periphery of the bearing cover plate; and the snap pins are arranged along a line parallel to the axis of the rotating shaft, fitted within the open slots and snapped to the rear end cover brush carrier plate. - 45 114 ''-

Description

2017100781 17 Jun2017

DESCRIPTION

EASILY-ASSEMBLED CARBON DUST ISOLATION STRUCTURE FOR A REAR END COVER BRUSH CARRIER OF A MOTOR

Technical Field of the Invention

The present invention relates an easily-assembled carbon dust isolation structure for a rear end cover brush carrier of a motor.

Background of the Invention A carbon brush, as a key component of a motor, is usually made of graphite carbon dust. The carbon brush always rubs against a commutator or a slip ring during the operation of the motor, resulting in lots of carbon dust. The carbon dust will enter a bearing due to the vibration of the motor, and lubricant inside the bearing will be contaminated to cause abnormal rotation of the bearing. As a result, it is necessary to replace the bearing to avoid performance degradation of the motor.

Summary of the Invention

An objective of the present invention is to provide an easily-assembled carbon dust isolation structure for a rear end cover brush carrier of a motor.

For this purpose, the present invention employs the following technical solution: an easily-assembled carbon dust isolation structure for a rear end cover brush carrier of a motor is provided, including a rear end cover brush carrier plate and a bearing; a bearing holding hole for holding the bearing is formed in the center of the rear end cover brush carrier plate; an annular baffle, which extends radially and inward, is formed in the bearing holding hole, and the bearing is held in the bearing holding hole; the rear end cover brush carrier plate is provided with a bearing cover plate, and the bearing cover plate is coordinated with and fixed to the rear end cover brush carrier plate so as to 1 2017100781 17 Jun2017 confine the bearing between the annular baffle and the bearing cover plate; a through hole, through which a rotating shaft passes, is formed on the bearing cover plate; a carbon dust block which is of an enclosed structure is formed on an outer end face of the bearing cover plate; the through hole is located in the carbon dust block; and the carbon dust block, the height of which is less than a distance between an inner end face of a brush holder and the bearing cover plate, extends in the axial direction of the rotating shaft; several open slots, which run through the rear end cover brush carrier plate in the axial direction of the rotating shaft, are formed on an outer side of the rear end cover brush carrier plate opposite to the bearing holding hole; several snap pins, axes of which are annularly arranged at intervals around an axis of the rotating shaft, are formed on a periphery of the bearing cover plate; and the snap pins are arranged along a line parallel to the axis of the rotating shaft, fitted within the open slots and snapped to the rear end cover brush carrier plate. According to the present invention, the bearing is covered by the bearing cover plate to avoid deviation of the bearing. According to the present invention, the bearing cover plate is provided with the snap pins so that it is more convenient and simple for assembling the bearing cover plate and the rear end cover brush carrier plate.

Preferably, the carbon dust block is annularly arranged. Consumables for the carbon dust block are reduced by such an arrangement, thereby reducing the production cost.

The present invention has the advantages that it can avoid the carbon dust entering the bearing, frequent replacement of the bearing and performance degradation of the motor. Moreover, the bearing cover plate of the present invention can be configured to axially confine the bearing and avoid deviation of the bearing. Furthermore, the bearing cover plate is simple in structure, fewer in consumables, lower in manufacturing cost and easy in assembly. 2 2017100781 17 Jun2017

Brief Description of the Drawings

Fig. 1 is a structural diagram for assembling a bearing cover plate and a rear end cover brush carrier plate according to the present invention;

Fig. 2 is a structural diagram of a bearing cover plate according to the present invention; and

Fig. 3 is another structural diagram for assembling the bearing cover plate and the rear end cover brush carrier plate according to the present invention.

Detailed Description of the Invention

The present invention will be further described as below with reference to the accompanying drawings by specific embodiments.

As shown in Fig. 1, Fig. 2 and Fig. 3, the present invention provides a carbon dust isolation structure for a rear end cover brush carrier of a motor, including a rear end cover brush carrier plate 1 and a bearing 2; a bearing holding hole 11 for holding the bearing is formed in the center of the rear end cover brush carrier plate 1; an annular baffle 12, which extends radially and inward, is formed in the bearing holding hole 11, and the bearing 2 is held in the bearing holding hole 11; and the rear end cover brush carrier plate 1 is provided with a bearing cover plate 4 and a wavy washer 3. The wavy washer 3 is arranged between the bearing 2 and the annular baffle 12, and the bearing cover plate 4 is coordinated with and fixed to the rear end cover brush carrier plate 1 so as to confine the bearing 2 and the wavy washer 3 between the annular baffle 12 and the bearing cover plate 4. A through hole 41, through which a rotating shaft passes, is formed on the bearing cover plate 4. A carbon dust block 42 which is of an enclosed structure is formed on an outer end face of the bearing cover plate 4; the through hole 41 is located in the carbon dust block 42; and the carbon dust block 42, the height of which is less than a distance between an inner end face of a brush holder and the bearing cover plate 4, extends in the axial direction of the rotating shaft.

The bearing cover plate 4 is annularly arranged, and the length of an inner 3 2017100781 17 Jun2017 diameter of the annular shape is larger than that of an outer diameter of an inner ring of the bearing. The carbon dust block 42 is annularly arranged and located at an inner edge of the bearing cover plate 4.

Several open slots 13, which run through the rear end cover brush carrier plate 1 in the axial direction of the rotating shaft, are formed on an outer side of the rear end cover brush carrier plate 1 opposite to the bearing holding hole 11. Several snap pins 43, axes of which are annularly arranged at intervals around an axis of the rotating shaft, are formed on a periphery of the bearing cover plate 4. The snap pins 43 are arranged along a line parallel to the axis of the rotating shaft, fitted within the open slots 13 and snapped to the rear end cover brush carrier plate 1. The bearing cover plate 4 is provided with the two snap pins 43 each provided on each of two opposite sides of the bearing cover plate 4, and a snap bulge 44 of each snap pin 43 faces an axis of the bearing. A gap 45 adapted to a brush box 5 is formed on the periphery of the bearing cover plate 4, and the bearing cover plate 4 is fixed to the rear end cover brush carrier plate 1 so as to enable a carbon brush in the brush box 5 to extend to an upper side of the bearing cover plate 4. The gap 45 whose width is adapted to that of the brush box 5 is arranged in an arc shape. 4

Claims

Claims

1. An easily-assembled carbon dust isolation structure for a rear end cover brush carrier of a motor, comprising a rear end cover brush carrier plate and a bearing; a bearing holding hole for holding the bearing is formed in the center of the rear end cover brush carrier plate; an annular baffle, which extends radially and inward, is formed in the bearing holding hole, and the bearing is held in the bearing holding hole; the rear end cover brush carrier plate is provided with a bearing cover plate, and the bearing cover plate is coordinated with and fixed to the rear end cover brush carrier plate so as to confine the bearing between the annular baffle and the bearing cover plate; a through hole, through which a rotating shaft passes, is formed on the bearing cover plate; a carbon dust block which is of an enclosed structure is formed on an outer end face of the bearing cover plate; the through hole is located in the carbon dust block; and the carbon dust block, the height of which is less than a distance between an inner end face of a brush holder and the bearing cover plate, extends in the axial direction of the rotating shaft; several open slots, which run through the rear end cover brush carrier plate in the axial direction of the rotating shaft, are formed on an outer side of the rear end cover brush carrier plate opposite to the bearing holding hole; several snap pins, axes of which are annularly arranged at intervals around an axis of the rotating shaft, are formed on a periphery of the bearing cover plate; and the snap pins are arranged along a line parallel to the axis of the rotating shaft, fitted within the open slots and snapped to the rear end cover brush carrier plate.
2. The easily-assembled carbon dust isolation structure for a rear end cover brush carrier of a motor according to claim 1, characterized in that the carbon dust block is annularly arranged.