CN2037509U

CN2037509U - Motor with oil slinger

Info

Publication number: CN2037509U
Application number: CN88208537U
Authority: CN
Inventors: 汪穗中; 格奥尔格·斯特洛尔
Original assignee: Johnson Electric Industrial Manufactory Ltd
Current assignee: Johnson Electric Industrial Manufactory Ltd
Priority date: 1987-07-14
Filing date: 1988-07-13
Publication date: 1989-05-10
Also published as: DE8809000U1; GB2207956A; JPS6434858U; GB8716518D0

Abstract

The utility model discloses a permanent magnet direct current motor. An oil slinger disk (29) is arranged between oil collecting ring (4) and bearing (11). The oil slinger disk (29) has the form of flat polyesters washer, and whose hole inner diameter is smaller than the outer diameter of shaft (2). The oil slinger disk adopts the appearance of dish when the oil slinger disk is pressing the shaft (2). Three barrier sheets (33, 36, 39) are used for limiting the axial movement of shaft (2) along the direction of support bearing (11) to avoid the oil slinger disk (29) touches other part and rolls to a convex shape toward the direction of bearing (7).

Description

Motor with oil slinger

The utility model is relevant with motor, particularly relevant with permanent magnet direct current small power motor, this class motor is common all to have one to be contained in disc on the motor reel between bearing and motor collector ring or armature, this disc can play and make oil not moving along the axial flow of armature, by the oil that flows is radially being thrown away from axle.

Recessed if the validity of disc can improve that this disc is done concavity towards the bearing aspect, however the disc than flat is more expensive aborning for a dish-shaped disc.

The utility model provides one to have the cylindrical support member of being contained in, the motor of disc, it is characterized in that disc includes a centre bore, be used for admitting littler than the external diameter of the strutting piece slightly diameter of Kong Youyi of strutting piece, arrange so adopt like this, when the disk that concaves is contained on the strutting piece, because of so disc firmly is pressed onto on the strutting piece the just expansion of the centre bore of disc, this just makes disc become the profile of a dishful of shape, therefore by between the disc of strutting piece, having used interference fit, just can obtain the benefit of dish shape disc with the disc on a plane.

Its best characteristics of the present utility model and advantage engage following specification and accompanying drawing can become more obvious.

The utility model can further specify with reference to accompanying drawing with in conjunction with example:

Fig. 1 is the cutaway view by a permanent magnet DC motor, represents first embodiment of the present utility model;

Fig. 2 is the detailed view after the interior amplification of the circled regions A among Fig. 1;

Fig. 3 is the view similar to Fig. 2, represents second embodiment of the present utility model;

Fig. 4 is the view similar to Fig. 2, represents the 3rd embodiment of the present utility model;

Fig. 5 is the view similar to Fig. 2, expression the utility model the 4th embodiment.

Mention Fig. 1, illustrate the low power DC motor of a permanent magnet, motor has a winding armature that can drive 3 and the motor reel 2 of collector ring is arranged, collector ring 4 and armature 3 install to soon that axle is gone up and armature with the method winding of known technology with link on the collector ring, in root 23 forging welding of collector ring to the lead 26 of armature wire-wound group.

Axle 2 is installed in the jar shape metal-back 5 of deep-draw, metal-back 5 is at one end sealed by integrally formed end plate 6, in a housing 8, end plate 6 has a bearing 7, and axle 2 axle journal is placed in the bearing 7, and a copper sheathing 24 is force-fitted in places restrictions on axle with respect to the moving axially of bearing 7 on the axle 2, and a packing ring 25 is contained on the axle between copper sheathing 24 and the bearing 7, two screwed holes that are used for installing motor are arranged on the end plate 6, and several ventilation slots can be arranged.

The other end of axle 2 is contained in the plastic end cover 10, typically the plastic end cover of being made by nylon has held the bearing 11 that the powder metallurgy of an automatic centering is made, axle just rotates in bearing, bearing 11 fixes the location by the thin slice 12 that extends axially that is pressed into the packing ring 13 on the end cap 10, end cap 10 is supporting has one of them brush holder that can see of a pair of carbon brush 14(in Fig. 1), this brush holder is pressed on the collector ring 4 by brush leaf (expressing among Fig. 1), and the brush leaf is linked on the power supply thin slice 15, and brush leaf/flake composite is fixed on the end cap 10 with rivet 16,17.

Show in the above-mentioned example that metal-back 5 has the permanent magnet 18 of two composition motor stators, every magnet 18 rides on the corresponding thin slice 19 that is pressed in metal-back 5 in an axial edge 20, and in another axial edge, by U-shaped spring 21 magnet 18 and metal-back 5 are separated.Metal-back along circumferencial direction along the groove of stretching 22 zone between brush 14 and armature 3 is used for ventilating.

Improvement of the present utility model is on the disc 29 at axle 2 between bearing 11 and the collector ring.

Disc 26 is formed by a polyester dish, this dish is to circularize and the smaller centre bore 30 of external diameter of diameter ratio shaft always arranged, when motor assembles, the polyester dish just pushes on the axle 2, and this dish adopts dish shape profile as shown in the figure, should be appreciated that, this profile of dish is a two-way stable, it can bend towards a left side also bendable can between these two positions, stir to the right as shown in Figure 2, this dish is positioned to concave surface towards bearing.In use, 2 oil that move can pass the reverse side 31 of disc from bearing 11 along axle, when motor rotates, oil stream just reaches the outer rim 32 of disc, subsequently from radially outward throwing away, if axle is vertical during motor mounting, and collector ring is topmost, when motor time spent not, dish-shaped disc just is used for collecting from bearing 11 toward dirty oil.

Because the bistable profile of disc 29, if disc is run into bearing 11 or end cap 10, it will stir, and therefore just can provide a power to come restrictive axes moving axially with respect to bearing at the copper sheathing that is assemblied on the axle 2 between disc 29 and the bearing 11.

Show other device of moving axially that is used for restrictive axes 2 to Fig. 5 at Fig. 3 to prevent that disc from stirring.

In Fig. 3, a closure casing 34 is made up of the end cap that holds bearing, and this shell shell is in conjunction with a thrust plate 33, and axle 2 just abuts against in the push pedal, so disc 29 is just away from end cap 10 and bearing 11.

In Fig. 4, the one current collection ring seat 35 that supports fanning strip 27 has a columniform axle sleeve 36, this axle sleeve extends to bearing 11 along axle 2, and disc 29 is contained on the axle sleeve 36, and the periphery 32 of disc is but in the back of axle sleeve 36 front ends, and a thrust washer 38 is between axle sleeve 36 and bearing 11, therefore, the moving axially by axle sleeve 36 and limit of axle 2, and packing ring 38 contacts with bearing 11, thereby end cap and bearing have been avoided in the neighboring of axle sleeve 36 assurance discs 29.

In Fig. 5, disc 29 ' form one with a cylindrical sleeve 39 that stretches to bearing 11 along axle 2, sleeve 39 just extend disc 29 ' neighboring 32, formed plane, one positive pushing pad circle 38 disc 29 ' and bearing 11 between, moving axially of axle limited by axle sleeve 39 and packing ring 38 contacts with bearing 11, and axle sleeve 39 has been avoided bearing and end cap with regard to the neighboring that guarantees disc like this.

Disc 29 is preferably made by polyester material, but other suitable materials also can use.

One disc can be positioned at the other end of axle 2, between armature 3 and bearing 7, it can be between copper sheathing 24 and armature 3, copper sheathing 24 can omit, also can adopt other to prevent that armature from moving axially to the device of bearing 7, for example armature can have an axle sleeve that stretches to bearing 7, and disc just is contained on the axle sleeve and (sees also the device on Fig. 4).

Can carry out various modifications to the above embodiments, as long as all such modifications all are included within the scope that the claim in the appendix protects.

Claims

1, a motor has a disc that is contained on the cylindrical support member, it is characterized in that the flat disk that disc includes a center drilling is used for being installed on the strutting piece, centre bore has a diameter more smaller than support member outer diameter, and when disc was contained on the strutting piece, this device was dish.

2, motor as claimed in claim 1 is characterized in that cylindrical support member is the axle of a motor.

3, motor as claimed in claim 2 is characterized in that providing a device to be used for placing restrictions on axle moving axially to prevent that disc from contacting above-mentioned part with respect to other part of motor.

4, motor as claimed in claim 3 is characterized in that having a thrust plate to be used for moving axially of restrictive axes.

5, motor as claimed in claim 1 has a collector ring, it is characterized in that strutting piece includes an axle sleeve that is formed on collector ring one termination.

6, motor as claimed in claim 5 is characterized in that axle sleeve along axially forwards stretching to moving, and disc is in that forwards sleeve extends beyond the formed degree forward in disc neighboring to being spill.

7, motor as claimed in claim 1 has an armature, it is characterized in that strutting piece includes an axle sleeve that is formed at armature one end.

8, motor as claimed in claim 7, it is characterized in that axle sleeve along axle forwards to extension, disc is in that forwards sleeve extends beyond the formed degree forward in disc neighboring to being spill.

9, motor as claimed in claim 1 is characterized in that, disc has a cylindrical sleeve around its centre bore, sleeve along strutting piece forwards to extension, and sleeve extend through the disc neighboring forwards to.

10, motor as claimed in claim 1 is characterized in that disc is a polyester material.