CN1327292A

CN1327292A - Shock reducing method for small motor and bearing shock reducing ring thereof

Info

Publication number: CN1327292A
Application number: CN 01110569
Authority: CN
Inventors: 郭修圃; 梁石华
Original assignee: JINMADA MANUFACTURER CO Ltd
Current assignee: JINMADA MANUFACTURER CO Ltd
Priority date: 2001-04-12
Filing date: 2001-04-12
Publication date: 2001-12-19
Anticipated expiration: 2021-04-12
Also published as: CN1147983C

Abstract

The shock reducing method includes the steps of producing cylindrical and hollow elastic bearing damping ring with one annular end wall and one opened end; sleeving the damping ring outside the rotor bearing with the end wall being toward the inner side of the bearing socket; inserting the rotor shaft and the bearing inside the bearing socket of the bearing holder in elastic fitting state; and fixing the stator holder onto stator lamination. The bearing damping ring is produced by pressing silicon rubber. The present invention can reduce the shock of motor, raise the performance of motor, and has the advantages of easy assembly and disassembly, and low cost.

Description

Miniature motor shock-dampening method and used bearing shock absorbing ring

The present invention relates to miniature motor, comprise low power and electric motor structure fractional horse-power, relate in particular to bearings mounted method of miniature motor and used bearing shock absorbing ring.

The miniature motor of prior art, the single phase series motor that for example is used for vacuum cleaner, the rolling bearing of its rotor commutator end places the spindle socket of the support of bearing, is ease of assembly and centering, adopts sliding fit usually between bearing outer ring and spindle socket inwall.Simultaneously, when the rigid bearing support is on stator lasmination, also to leave certain axial movement space for rotor.Although between spindle socket inner face and bearing face, added the curved packing ring of wave packing ring or elasticity, but the vibrations in the time of all can not eliminating motor operation preferably, even bearing outer ring rotates displacement with respect to the spindle socket inwall sometimes, is commonly called as " circle of acting as a travelling agent ", causes serious consequence.

The objective of the invention is to avoid above-mentioned the deficiencies in the prior art part and propose a kind of bearing shock absorbing ring that makes the miniature motor operation time alleviate the method for vibrations and adopt usefulness that this method is adorned.

Purpose of the present invention can be by realizing by the following technical solutions: propose and implement a kind of miniature motor shock-dampening method, it may further comprise the steps: 1. make a kind of resilient bearing shock absorbing ring, it has cylindrical trunk, hollow, one end of this trunk is the ring-type end wall, and the other end is unlimited fully; When 2. assembling described motor, described shock absorbing ring is locked on the outer ring of rotor bearing, described end wall outer surface is towards the spindle socket inner face; 3. armature spindle and the bearing that is with described shock absorbing ring thereof are filled in the spindle socket of bearing of motor support, be the resilient tight fit state; 4. the described support of bearing is fixed on the motor stator lamination.

Purpose of the present invention also must realize by taking following technological means: design, a kind of bearing shock absorbing ring that is used for miniature motor of making, and this shock absorbing ring has cylindrical trunk, and is axially shorter, hollow, the one end has the ring-type end wall, and the other end is unlimited fully.

The drawing of accompanying drawing is described as follows:

Fig. 1 is a kind of miniature motor orthographic projection schematic diagram that adopts the inventive method assembling;

Fig. 2 is the broken section enlarged drawing at Fig. 1 bearing-commutator position;

Fig. 3 is the main cutaway view of looking of bearing shock absorbing ring 1 orthographic projection that the present invention is used for miniature motor;

Fig. 4 is the orthographic projection vertical view of Fig. 3 bearing shock absorbing ring 1.

Be described in further detail below in conjunction with the most preferred embodiment shown in each accompanying drawing: propose and implement a kind of miniature motor that is applicable to, the shock-dampening method of vacuum cleaner for example, referring to figs. 1 through Fig. 4, it may further comprise the steps

1. make a kind of resilient bearing shock absorbing ring 1, it has cylindrical trunk 13, hollow, this trunk

An end be ring-type end wall 12, the other end is unlimited fully;

When 2. assembling described motor, shock absorbing ring 1 is locked on the outer ring of rotor bearing 6 described end wall

12 outer surfaces are towards spindle socket 42 inner faces;

3. armature spindle and the bearing 6 that is with shock absorbing ring 1 thereof are filled in the spindle socket of bearing of motor support 4

In 42, be the resilient tight fit state;

4. the described support of bearing 4 is fixed on the motor stator lamination 9.

The bearing shock absorbing ring 1 that described method is used is used the silicon rubber die forming, and the outer surface of its ring-type end wall 12 is provided with the jut 14 that extends vertically at least two places, and they evenly distribute on the same circumference of described outer surface.And described bearing shock absorbing ring 1 also is evenly distributed with at least two fillets 18 of extending vertically on the outer wall of its cylindrical trunk 13.

The bearing shock absorbing ring 1 that the inventive method is used as shown in Figure 3, Figure 4, has cylindrical trunk 13, and is axially shorter, hollow, and the one end has ring-type end wall 12, and the other end is unlimited fully.The outer surface of this ring-type end wall 12 is provided with the jut 14 that extends vertically at least two places, and they evenly distribute on the same circumference of described outer surface.The jut 14 that extends vertically at 8 places normally is set, and they have under the situation of error at motor general assembly axial dimension, play a part to adjust the rotor assembly axial location, have improved the accuracy of rotor assembly position.

Equally distributed fillet 18 of extending vertically is normally 6 on the outer wall of the cylindrical trunk 13 of the above shock absorbing ring.This shock absorbing ring 1 silicon rubber die forming, shore hardness are 65 to 75 degree.It also has good oil resistance and elasticity except having suitable like this hardness, thus can noise reduction, damping.Compare the method for rigid bearing outer rings such as adopting wave packing ring, curved packing ring and press, the behavior in service of motor increases, but also has prolonged useful life.

Bearing shock absorbing ring 1 of the present invention is used for fixing the outer ring 61 of miniature motor rolling bearing 6, can not occur " circle of acting as a travelling agent " phenomenon in the time of can making bearing operation.Because shock absorbing ring 1 has suitable elasticity, and be distributed with 6 places fillet 18 on the outer wall of its trunk 13, thus can be good fit with the spindle socket 42 on the support of bearing 4, reduced requirement to spindle socket 42 machining accuracies, also correspondingly reduced cost certainly.The characteristics of described 6 places fillet 18 and favorable elasticity have guaranteed the accuracy when shock absorbing ring 1 cooperates with spindle socket 42 reliably, have avoided use prior art riveting housing washer 61 and cause its distortion, have prolonged useful life of bearing 6.Again because need not spreading glue, so manufacturability is relatively good, easy accessibility.

Compare with prior art, vibrations alleviated property when the inventive method and used shock absorbing ring made the motor operation Can improve, go back simultaneously easy disassembly, reduce production costs.

Claims

1. a miniature motor shock-dampening method is characterized in that: may further comprise the steps

1. make a kind of resilient bearing shock absorbing ring (1), it has cylindrical trunk (13), hollow, and an end of this trunk is ring-type end wall (12), the other end is unlimited fully;

When 2. assembling described motor, shock absorbing ring (1) is locked on the outer ring of rotor bearing (6), described end wall (12) outer surface is towards spindle socket (42) inner face;

3. armature spindle and the bearing (6) that is with shock absorbing ring (1) thereof are filled in the spindle socket (42) of bearing of motor support (4), be the resilient tight fit state;

4. the described support of bearing (4) is fixed on the motor stator lamination (9).

2. according to the described miniature motor shock-dampening method of claim 1, it is characterized in that:

The bearing shock absorbing ring (1) that described method is used, the outer surface of its ring-type end wall (12) is provided with the jut (14) that extends vertically at least two places, and they evenly distribute on the same circumference of described outer surface.

3. according to the described miniature motor shock-dampening method of claim 1, it is characterized in that:

The bearing shock absorbing ring (1) that described method is used is evenly distributed with at least two fillets (18) of extending vertically on the outer wall of its cylindrical trunk (13).

4. according to the described miniature motor shock-dampening method of claim 1, it is characterized in that:

The bearing shock absorbing ring (1) that described method is used is used the silicon rubber die forming.

5. bearing shock absorbing ring (1) that is used for miniature motor is characterized in that:

Described shock absorbing ring (1) has cylindrical trunk (13), and is axially shorter, hollow, and the one end has ring-type end wall (12), and the other end is unlimited fully.

6. according to the described shock absorbing ring (1) that is used for the small-sized electric machine bearing of claim 5, it is characterized in that:

Described shock absorbing ring (1), the outer surface of its ring-type end wall (12) are provided with the jut (14) that extends vertically at least two places, and they evenly distribute on the same circumference of described outer surface.

7. according to the described shock absorbing ring (1) that is used for the small-sized electric machine bearing of claim 6, it is characterized in that:

The outer surface of described ring-type end wall (12) is provided with the 8 place's juts (14) that extend vertically.

8. according to the described shock absorbing ring (1) that is used for the small-sized electric machine bearing of claim 5, it is characterized in that:

Described shock absorbing ring (1) is evenly distributed with at least two fillets (18) of extending vertically on the outer wall of its cylindrical trunk (13).

9. according to the described shock absorbing ring (1) that is used for the small-sized electric machine bearing of claim 8, it is characterized in that:

Equally distributed fillet (18) of extending vertically is 6 on the outer wall of described cylindrical trunk (13).

10. according to the described shock absorbing ring (1) that is used for the small-sized electric machine bearing of claim 5, it is characterized in that:

Described shock absorbing ring (1) is used the silicon rubber die forming.

11., it is characterized in that according to the described shock absorbing ring (1) that is used for the small-sized electric machine bearing of claim 10:

Described shock absorbing ring (1) with the silicon rubber die forming, shore hardness are 65 to 75 degree.