CN214314847U

CN214314847U - Novel sealing mode's vacuum pump motor

Info

Publication number: CN214314847U
Application number: CN202120561647.7U
Authority: CN
Inventors: 江玲玲; 胡桂全; 赵宇; 曹进; 黄安庆; 叶郭波
Original assignee: CHONGQING PINGJIANG INDUSTRIAL CO LTD
Current assignee: CHONGQING PINGJIANG INDUSTRIAL CO LTD
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-09-28
Anticipated expiration: 2031-03-19

Abstract

The utility model relates to a vacuum pump motor with a novel sealing mode, which comprises a stator assembly and a rotor assembly; the stator component comprises a base, a brush holder component, a sealing ring, a shell, a magnetic shoe positioning ring, an oil-containing bearing, a shell plug and a rolling bearing; the inner side of the sealing ring is provided with a groove, the radial outer side of the brush holder assembly is arranged in the groove of the sealing ring, the brush holder assembly is positioned at the axial upper part of the base, the machine shell is positioned at the axial upper parts of the brush holder assembly and the sealing ring, and the machine shell is fixedly connected with the base; the rotor assembly comprises a commutator assembly, a rotating shaft, a rotor core and a coil winding, and the rotating shaft is fixedly connected with the oil-containing bearing and the rolling bearing; the base is provided with a first step surface and a second step surface, the upper portion of the sealing ring protrudes outwards to be provided with a convex edge, the lower end of the sealing ring is in contact sealing with the first step surface, and the lower end of the convex edge is in contact sealing with the second step surface. The utility model has the advantages of the sealing reliability is high, with low costs.

Description

Novel sealing mode's vacuum pump motor

Technical Field

The utility model relates to a vacuum pump motor technical field especially relates to a vacuum pump motor of novel sealing method.

Background

The working principle of the vacuum pump motor is as follows: the stator of the vacuum pump motor is provided with a fixed main magnetic pole and an electric brush, and the rotor is provided with an armature winding and a commutator. Electric energy of a direct current power supply enters an armature winding through an electric brush and a commutator to generate armature current, and a magnetic field generated by the armature current interacts with a main magnetic field to generate electromagnetic torque so that a motor rotates to drive a load.

A radial sealing mode is adopted between a base and a shell of an existing foreign vacuum pump motor brand (Hira-HELLA), the sealing of a vacuum pump motor is guaranteed mainly by extruding the side face of a sealing ring, and if air holes or sand holes exist in the radial direction in the working process of the motor, the sealing performance of the motor is damaged.

Patent application No. 200710012758.7's a motor for vacuum pump, shielding sleeve and the pump body between adopt the mode of installation O type sealing washer in the tang to seal, this kind of single-deck seal structure, very easily extrusion damage in the installation is difficult to break away from the sealing washer and damages and influence the shortcoming of gas tightness, the reliability is not high.

Patent application No. 201621382546.9 is a seal structure of motor, sealed the pad receive the board and the end cover extrusion pastes to form sealedly on the casing, and has the breach of being qualified for the next round of competitions, and this kind of individual layer sealing mode reliability is not high, if lead to under the serious condition that generates heat at motor speed is higher or continuous operation, sealed extremely easily damages, will influence the motor gas tightness, is difficult to guarantee system reliability.

Disclosure of Invention

To the not enough of above-mentioned prior art, the technical problem that this patent application will solve how to provide an axial double-deck sealed, and the sealing reliability is high, simple structure, the vacuum pump motor of with low costs novel sealed mode.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a vacuum pump motor adopting a novel sealing mode comprises a stator assembly and a rotor assembly; the stator assembly comprises a base, a brush holder assembly, a sealing ring, a shell, a magnetic shoe positioning ring, an oil-containing bearing, a shell plug and a rolling bearing; the inner side of the sealing ring is provided with a groove, the radial outer side of the brush holder assembly is arranged in the groove of the sealing ring, the brush holder assembly is positioned at the axial upper part of the base, the casing is positioned at the axial upper parts of the brush holder assembly and the sealing ring, and the casing is fixedly connected with the base; the magnetic shoe positioning ring is positioned in the shell, and the magnetic shoe is positioned between the magnetic shoe positioning ring and the brush holder assembly; the oil-retaining bearing is positioned in a groove on the radial inner side of the shell, the shell plug is fixedly arranged at the top of the shell, and the rolling bearing is positioned in an annular groove of the base; the rotor assembly comprises a commutator assembly, a rotating shaft, a rotor core and a coil winding, the rotor core and the commutator assembly are fixedly arranged on the outer side of the rotating shaft, the rotor core is arranged right opposite to the magnetic shoe, and the coil winding is wound in a tooth slot of the rotor core; the rotating shaft is fixedly connected with the oil-containing bearing and the rolling bearing; the base is provided with a first step surface and a second step surface, the upper portion of the sealing ring protrudes outwards to be provided with a convex edge, the lower end of the sealing ring is in contact sealing with the first step surface, and the lower end of the convex edge is in contact sealing with the second step surface.

Wherein, the brush yoke assembly is just opposite to the magnetic shoe fixed mounting with spacing post and stabilizer blade.

And a rolling bearing retainer ring is fixedly arranged in the annular groove.

Wherein the rolling bearing retainer ring is W-shaped.

Wherein, the material of antifriction bearing rand is high carbon spring steel.

The sealing ring is made of silicon rubber.

Wherein, the magnetic shoe is a permanent magnetic ferrite.

Wherein, the casing passes through screw and spring washer fastening connection with the base.

Wherein, the base is made of cast aluminum material.

In conclusion, this novel sealed mode's vacuum pump motor, through the contact seal of sealing washer with first step face and second step face, even one of them is sealed suffers destruction, another is sealed still can play a role, realizes the double-deck sealed of axial, guarantees the sealed reliability of vacuum pump motor. And meanwhile, a rolling bearing retainer ring is arranged, so that the axial movement of the motor in the operation process is effectively prevented.

Drawings

Fig. 1 is the utility model discloses a novel sealed mode's vacuum pump motor's axonometric drawing.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a left side view of fig. 2.

Fig. 4 is a right side view of fig. 2.

Fig. 5 is a sectional view a-a of fig. 4.

FIG. 6 is an isometric view of a brush holder assembly.

Fig. 7 is an isometric view of the seal ring.

Fig. 8 is a front view of fig. 7.

Fig. 9 is a sectional view B-B of fig. 8.

Fig. 10 is an isometric view of a rolling bearing collar.

Fig. 11 is a side view of fig. 10.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "upper, lower" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

As shown in fig. 1 to 11, a vacuum pump motor of a novel sealing manner includes a stator assembly and a rotor assembly; the stator component comprises a base 1, a brush holder component 2, a sealing ring 3, a machine shell 4, a magnetic shoe 7, a magnetic shoe positioning ring 8, an oil-containing bearing 9, a machine shell plug 10 and a rolling bearing 11; the inner side of the sealing ring is provided with a groove 23, the radial outer side of the brush holder assembly is arranged in the groove of the sealing ring, the brush holder assembly is positioned at the axial upper part of the base, the machine shell is positioned at the axial upper parts of the brush holder assembly and the sealing ring, and the machine shell is fixedly connected with the base; the magnetic shoe positioning ring is positioned in the shell, and the magnetic shoe is positioned between the magnetic shoe positioning ring and the brush holder assembly; the oil-retaining bearing is positioned in a groove on the radial inner side of the shell, the shell plug is fixedly arranged at the top of the shell, and the rolling bearing is positioned in an annular groove of the base; the rotor assembly comprises a commutator assembly 13, a rotating shaft 14, a rotor core 15 and a coil winding 16, the rotor core and the commutator assembly are fixedly arranged on the outer side of the rotating shaft, the rotor core is arranged right opposite to the magnetic shoe, and the coil winding is wound in a tooth slot of the rotor core; the rotating shaft is fixedly connected with the oil-containing bearing and the rolling bearing; the base is provided with a first step surface 17 and a second step surface 18, the upper portion of the sealing ring protrudes outwards to be provided with a convex edge 19, the lower end of the sealing ring is in contact sealing with the first step surface, and the lower end of the convex edge is in contact sealing with the second step surface. Through the contact seal of sealing washer and first step face and second step face, even one of them is sealed suffers destruction, another is sealed still can play a role, realizes the double-deck sealed of axial, guarantees the reliability of vacuum pump motor seal.

Wherein, the brush yoke component is provided with a spacing column 20 and a support leg 21 opposite to the magnetic shoe. The limiting column, the supporting leg and the magnetic shoe positioning ring are jointly used for axially positioning the magnetic shoe, so that the magnetic shoe is positioned in a specified range.

Wherein, a rolling bearing retainer ring 12 is fixedly arranged in the annular groove. Set up antifriction bearing rand, effectively prevent the axial float of motor operation process.

Wherein the rolling bearing retainer ring is W-shaped.

Wherein, the material of antifriction bearing rand is high carbon spring steel.

The sealing ring is made of silicon rubber.

Wherein, the magnetic shoe is a permanent magnetic ferrite.

Wherein, the machine shell is tightly connected with the base through a screw 5 and a spring washer 6.

Wherein, the base is made of cast aluminum material.

Specifically, the circumference interval of antifriction bearing rand is provided with the card foot. The rolling bearing retainer ring is convenient to be fixed with the annular groove better, and the rolling bearing retainer ring is directly pressed into the annular groove 22 during installation.

Spacing post and stabilizer blade are provided with two respectively, and two spacing posts radially correspond the setting along the brush yoke subassembly, and two stabilizer blades radially symmetry along the brush yoke subassembly set up, spacing post and stabilizer blade are the rectangle setting, spacing post and stabilizer blade are just to the setting of magnetic shoe.

Through the axial double-layer sealing, the reliability of the vacuum pump motor sealing is greatly improved, the defect of the traditional radial single-layer sealing under the condition that the sealing ring has an air hole in the radial direction is effectively overcome, the reliability of the whole machine is greatly improved, meanwhile, the rolling bearing is axially limited by the rolling bearing retainer ring, and the axial movement of the bearing in the bearing inner hole is effectively prevented.

Finally, it should be noted that: various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, to the extent that such modifications and variations of the present invention fall within the scope of the present claims and their equivalents, it is intended that the present invention encompass such modifications and variations as well.

Claims

1. A vacuum pump motor adopting a novel sealing mode comprises a stator assembly and a rotor assembly;

the stator assembly comprises a base, a brush holder assembly, a sealing ring, a shell, a magnetic shoe positioning ring, an oil-containing bearing, a shell plug and a rolling bearing;

the inner side of the sealing ring is provided with a groove, the radial outer side of the brush holder assembly is arranged in the groove of the sealing ring, the brush holder assembly is positioned at the axial upper part of the base, the casing is positioned at the axial upper parts of the brush holder assembly and the sealing ring, and the casing is fixedly connected with the base;

the magnetic shoe positioning ring is positioned in the shell, and the magnetic shoe is positioned between the magnetic shoe positioning ring and the brush holder assembly;

the oil-retaining bearing is positioned in a groove on the radial inner side of the shell, the shell plug is fixedly arranged at the top of the shell, and the rolling bearing is positioned in an annular groove of the base;

the rotor assembly comprises a commutator assembly, a rotating shaft, a rotor core and a coil winding, the rotor core and the commutator assembly are fixedly arranged on the outer side of the rotating shaft, the rotor core is arranged right opposite to the magnetic shoe, and the coil winding is wound in a tooth slot of the rotor core;

the rotating shaft is fixedly connected with the oil-containing bearing and the rolling bearing;

the sealing ring is characterized in that the base is provided with a first step surface and a second step surface, the upper part of the sealing ring protrudes outwards to form a convex edge, the lower end of the sealing ring is in contact sealing with the first step surface, and the lower end of the convex edge is in contact sealing with the second step surface.

2. A vacuum pump motor with a novel sealing mode according to claim 1, wherein the brush holder assembly is fixedly provided with a limiting column and a supporting leg opposite to the magnetic shoe.

3. A vacuum pump motor with a novel sealing mode according to claim 2, wherein a rolling bearing retainer ring is fixedly arranged in the annular groove.

4. A novel sealing vacuum pump motor according to claim 1, wherein the rolling bearing collar is W-shaped.

5. A novel sealing vacuum pump motor according to claim 4, wherein the material of the rolling bearing collar is high carbon spring steel.

6. The vacuum pump motor with the novel sealing mode as claimed in claim 1, wherein the sealing ring is made of silicon rubber.

7. The vacuum pump motor in the novel sealing mode is characterized in that the magnetic shoe is made of permanent magnetic ferrite.

8. The vacuum pump motor with a novel sealing mode as claimed in claim 1, wherein the casing is fixedly connected with the base through a screw and a spring gasket.

9. A novel sealing type vacuum pump motor according to claim 1, wherein the base is made of cast aluminum.