CN215419857U

CN215419857U - Dust collector, dust collector motor and bearing sealing structure of dust collector motor

Info

Publication number: CN215419857U
Application number: CN202121718231.8U
Authority: CN
Inventors: 黄义才; 刘晓东
Original assignee: ZHEJIANG FOUNDER MOTOR CO Ltd
Current assignee: ZHEJIANG FOUNDER MOTOR CO Ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-01-04
Anticipated expiration: 2031-07-27

Abstract

The utility model provides a dust collector, a dust collector motor and a bearing sealing structure of the dust collector motor, wherein the bearing sealing structure comprises a bearing, a fixed impeller, a movable impeller and a transmission shaft, the bearing is positioned on the inner side of the fixed impeller and forms an annular cavity with the fixed impeller, in particular, the bearing sealing structure also comprises a sealing gasket, a backing ring, a disc-shaped gasket and a fastening component which are sleeved on the transmission shaft and positioned at an opening of the annular cavity on the outer side of the bearing, and the sealing gasket, the backing ring, the disc-shaped gasket and the fastening component are sequentially arranged from inside to outside; the sealing gasket is arranged in the annular cavity and is attached to the edge of the outer end face of the bearing; the cushion ring is cylindrical, and a plurality of tooth-shaped structures which are uniformly arranged along the circumferential direction of the cushion ring are limited at the outer edge of the cushion ring; the disc-shaped gasket is buckled on the outer end face of the fixed impeller and covers the opening of the annular cavity. The sealing structure has double dustproof and waterproof structures and good sealing performance.

Description

Dust collector, dust collector motor and bearing sealing structure of dust collector motor

Technical Field

The utility model relates to a motor sealing technology, in particular to a bearing sealing structure of a dust collector motor, the dust collector motor with the structure and a dust collector with the motor.

Background

The working principle of the dust collector is that a motor of the dust collector rotates at a high speed, air is sucked from a suction inlet, and a dust box generates certain vacuum. The specific dust collector motor structure is as follows: the air inlet is arranged on the shell and is positioned on one side end face, far away from the hood, of the shell, the motor body drives the impeller to rotate, and therefore negative air pressure is formed inside the shell to enable the air inlet to have suction. Therefore, the motor of the dust collector plays an important role in the operation process of the dust collector.

The dust catcher can inhale a large amount of dust and moisture at the course of the work, for avoiding the dust catcher motor to receive external adverse circumstances's interference, under the normal conditions, can set up seal assembly between the bearing of dust catcher motor and transmission shaft, nevertheless current seal assembly sealing performance is comparatively weak, when dust catcher motor drive impeller rotated at a high speed, still in a small amount of dust or moisture motor, in the long term, humidity and dirt corroded the motor and lead to its life-span to shorten. Therefore, how to improve the sealing performance of the motor of the dust collector is one of the problems to be solved urgently in the field at present.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problems, a first object of the present invention is to provide a bearing sealing structure of a vacuum cleaner motor, which has a double dustproof and waterproof structure and a good sealing performance.

A second object of the present invention is to provide a cleaner motor having the above-described bearing sealing structure.

A third object of the present invention is to provide a vacuum cleaner in which the above-mentioned vacuum cleaner motor is disposed.

In view of the above objects, an aspect of the present invention provides a bearing sealing structure of a vacuum cleaner motor, including a bearing, a fixed impeller, a movable impeller and a transmission shaft, wherein the bearing is located inside the fixed impeller and forms an annular cavity with the fixed impeller, and particularly, the bearing sealing structure further includes a sealing gasket, a backing ring, a disc-shaped gasket and a fastening component, which are sleeved on the transmission shaft and located at an opening of the annular cavity outside the bearing, and the sealing gasket, the backing ring, the disc-shaped gasket and the fastening component are sequentially arranged from inside to outside;

the sealing gasket is arranged in the annular cavity and is attached to the edge of the outer end face of the bearing; the bearing is characterized in that the backing ring is cylindrical, the inner side of the backing ring abuts against the outer end face of the bearing, a plurality of tooth-shaped structures which are uniformly arranged along the circumferential direction of the backing ring are limited at the outer edge of the backing ring, and when the motor rotates, the tooth-shaped structures of the backing ring generate an outward-discharged airflow to prevent moisture and dust from entering;

the disc-shaped gasket is buckled on the outer end face of the fixed impeller and covers the opening of the annular cavity, and the fastening component applies a force which extrudes towards the direction of the bearing to the disc-shaped gasket, so that the disc-shaped gasket is tightly contacted with the backing ring and the backing ring is tightly contacted with the bearing.

Preferably, the tooth-shaped structures are inclined towards the direction opposite to the rotating direction of the fixed impeller, and the inclination angles of the tooth-shaped structures can accelerate the peripheral air flow velocity during the rotation of the motor.

Preferably, the inclination angle of the tooth-like structure is 10-20 °.

Preferably, the outer surface of the tooth-shaped structure is L-shaped.

Preferably, the sealing gasket is a rubber gasket.

Preferably, the edge of the disc-shaped gasket is provided with a folded edge which is bent inwards, an annular groove which is coaxial with the transmission shaft is defined on the end surface of the fixed impeller close to the movable impeller, and the folded edge is clamped in the annular groove.

Preferably, the fastening member includes a fastening nut.

Preferably, the bearing sealing structure further comprises a flat gasket sleeved on the transmission shaft, and the flat gasket is arranged between the fastening component and the disc-shaped gasket.

In another aspect of the present invention, there is provided a cleaner motor including the bearing sealing structure as described above.

In still another aspect of the present invention, there is provided a vacuum cleaner having the above-described vacuum cleaner motor disposed therein.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model adopts the disc-shaped gasket buckled on the outer end surface of the fixed impeller to form a first layer of protective structure, and generates an outward-discharged airflow through the cylindrical backing ring with the edge tooth-shaped structure to form a second layer of protective structure when the motor rotates, thereby further preventing water vapor and dust from entering. In addition, the disk-shaped gasket is preferably embedded in an annular groove on the outer end face of the stator vane wheel, which is coaxial with the transmission shaft, so as to further block the advancing passage of moisture and dust.

The dust collector motor has a double dustproof and waterproof structure, has better sealing performance, can effectively avoid the erosion of water vapor and dust to the internal parts of the dust collector motor, and is beneficial to prolonging the service life of the dust collector motor.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a sectional view of a bearing sealing structure having a cleaner motor in an embodiment of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a first schematic view of a grommet according to an embodiment of the present invention;

FIG. 4 is a second schematic structural view of a backing ring according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a disc-shaped gasket according to an embodiment of the present invention.

Wherein, 100, wind cover; 101. a housing; 102. a bearing; 103. fixing an impeller; 104. a movable impeller; 105. a drive shaft;

1031. an annular cavity; 1032. an annular groove;

200. a gasket; 201. a backing ring; 202. a disc-shaped gasket; 203. a flat gasket; 204. a fastening member;

2011. a tooth-shaped structure; 2021. and (7) folding edges.

Detailed Description

The utility model is further described with reference to the following figures and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The embodiment provides a bearing sealing structure of a vacuum cleaner motor, as shown in fig. 1 and fig. 2, the bearing sealing structure comprises a bearing 102, a fixed impeller 103, a movable impeller 104 and a transmission shaft 105, wherein the bearing 102 is located inside the fixed impeller 103 and forms an annular cavity 1031 with the fixed impeller 103, particularly, the bearing 102 sealing structure further comprises a sealing gasket 200, a backing ring 201, a disc-shaped gasket 202 and a fastening component 204, the sealing gasket 200, the backing ring 201, the disc-shaped gasket 202 and the fastening component 204 are sleeved on the transmission shaft 105 and located at an opening of the annular cavity 1031 outside the bearing 102, and the sealing gasket 200, the backing ring 201, the disc-shaped gasket 202 and the fastening component 204 are sequentially arranged from inside to outside;

the sealing gasket 200 is arranged in the annular cavity 1031 and is attached to the edge of the outer end face of the bearing 102; the backing ring 201 is cylindrical, the inner side of the backing ring is abutted against the outer end face of the bearing 102, as shown in fig. 3, a plurality of tooth-shaped structures 2011 which are uniformly arranged along the circumferential direction of the backing ring 201 are defined on the outer edge of the backing ring 201, and when the motor rotates, the tooth-shaped structures 2011 of the backing ring 201 generate an outward-discharged air flow to prevent moisture and dust from entering;

the disc-shaped gasket 202 is fastened to the outer end surface of the fixed impeller 103 and covers the opening of the annular cavity 1031, and the fastening member 204 applies a pressing force to the disc-shaped gasket 202 in a direction toward the bearing 102, so that the disc-shaped gasket 202 and the backing ring 201 are in close contact with each other, and the backing ring 201 and the bearing 102 are in close contact with each other.

As a preferred embodiment, as shown in fig. 4, the teeth 2011 are inclined in a direction opposite to the rotation direction of the fixed impeller 103, and the inclination of the teeth 2011 can increase the peripheral air flow rate during the rotation of the motor.

As a preferred embodiment, the teeth 2011 is inclined at an angle of 10 ° to 20 °.

As a preferred embodiment, the outer surface of the tooth 2011 is L-shaped.

In a preferred embodiment, the gasket 200 is a rubber gasket.

As a preferred embodiment, as shown in fig. 5, the edge of the disc-shaped gasket 202 defines an inward-bent folded edge 2021, and an annular groove 1032 coaxial with the transmission shaft 105 is defined on the end surface of the fixed impeller 103 adjacent to the movable impeller 104, and the folded edge 2021 is snapped into the annular groove 1032.

As a preferred embodiment, the fastening member 204 comprises a fastening nut.

As a preferred embodiment, the sealing structure of the bearing 102 further comprises a flat gasket 203 sleeved on the transmission shaft 105, and the flat gasket 203 is arranged between the fastening component 204 and the disc-shaped gasket 202.

The present embodiment also provides a cleaner motor including the bearing 102 sealing structure as described above.

In this embodiment, the vacuum cleaner is further provided with the vacuum cleaner motor, and as shown in fig. 1, a fan cover 100 is disposed outside a casing 101 and a movable impeller 104 of the vacuum cleaner motor.

The utility model adopts the disc-shaped gasket buckled on the outer end surface of the fixed impeller to form a first layer of protective structure, and generates an outward-discharged airflow through the cylindrical backing ring with the edge tooth-shaped structure to form a second layer of protective structure when the motor rotates, thereby further preventing water vapor and dust from entering. In addition, the disk-shaped gasket is preferably inserted into an annular groove on the outer end face of the stator vane wheel, which is coaxial with the drive shaft, so as to further block the passage of moisture and dust.

Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the principle and spirit of the present invention, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims

1. A bearing sealing structure of a dust collector motor comprises a bearing (102), a fixed impeller (103), a movable impeller (104) and a transmission shaft (105), wherein the bearing (102) is positioned on the inner side of the fixed impeller (103) and forms an annular cavity (1031) with the fixed impeller (103), and is characterized by further comprising a sealing gasket (200), a backing ring (201), a disc-shaped gasket (202) and a fastening component (204), wherein the sealing gasket (200), the backing ring (201), the disc-shaped gasket (202) and the fastening component (204) are sleeved on the transmission shaft (105) and positioned at the opening of the annular cavity (1031) on the outer side of the bearing (102), and the sealing gasket (200), the backing ring (201), the disc-shaped gasket (202) and the fastening component (204) are sequentially arranged from inside to outside;

the sealing gasket (200) is arranged in the annular cavity (1031) and is attached to the edge of the outer end face of the bearing (102); the bearing is characterized in that the backing ring (201) is cylindrical, the inner side of the backing ring abuts against the outer end face of the bearing (102), a plurality of tooth-shaped structures (2011) which are uniformly arranged along the circumferential direction of the backing ring (201) are limited at the outer edge of the backing ring (201), and when the motor rotates, the tooth-shaped structures (2011) of the backing ring (201) generate an outward-discharged air flow to prevent moisture and dust from entering;

the disc-shaped gasket (202) is buckled on the outer end face of the fixed impeller (103) and covers the opening of the annular cavity (1031), and the fastening component (204) applies a force to the disc-shaped gasket (202) to press towards the bearing (102), so that the disc-shaped gasket (202) is tightly contacted with the backing ring (201) and the backing ring (201) is tightly contacted with the bearing (102).

2. The bearing seal structure of a vacuum cleaner motor according to claim 1, wherein the teeth (2011) are inclined in a direction opposite to a rotation direction of the fixed impeller (103), and the inclination of the teeth (2011) can increase a peripheral air flow rate during the rotation of the motor.

3. The bearing sealing structure of a cleaner motor according to claim 2, wherein the angle of inclination of the teeth structure (2011) is 10 ° -20 °.

4. The bearing seal structure of a vacuum cleaner motor according to claim 1, wherein an outer surface of the teeth structure (2011) is L-shaped.

5. The bearing sealing structure of a vacuum cleaner motor according to claim 1, wherein the gasket (200) is a rubber gasket.

6. The bearing seal structure of the motor of the dust collector as claimed in claim 1, wherein the edge of the disc-shaped gasket (202) is defined with an inward bent flange (2021), the end surface of the fixed impeller (103) close to the movable impeller (104) is defined with an annular groove (1032) coaxial with the transmission shaft (105), and the flange (2021) is clamped in the annular groove (1032).

7. The bearing sealing structure of a cleaner motor according to claim 1, wherein the fastening member (204) comprises a fastening nut.

8. A bearing sealing structure of a cleaner motor according to claim 1, further comprising a flat gasket (203) fitted over the driving shaft (105), the flat gasket (203) being disposed between the fastening member (204) and the disc-shaped gasket (202).

9. A vacuum cleaner motor comprising a bearing sealing structure according to any one of claims 1 to 8.

10. A vacuum cleaner, characterized in that a vacuum cleaner motor according to claim 9 is arranged therein.