CN206650565U - A kind of hollow-cup permanent-magnet direct-current micromotor - Google Patents
A kind of hollow-cup permanent-magnet direct-current micromotor Download PDFInfo
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- CN206650565U CN206650565U CN201720413450.2U CN201720413450U CN206650565U CN 206650565 U CN206650565 U CN 206650565U CN 201720413450 U CN201720413450 U CN 201720413450U CN 206650565 U CN206650565 U CN 206650565U
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- housing
- motor
- motor shaft
- bushing
- cover
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Abstract
It the utility model is related to a kind of hollow-cup permanent-magnet direct-current micromotor, including motor housing, motor shaft, bearing holder (housing, cover) and end cap, one end of motor shaft and one end of bearing holder (housing, cover) are stretched out from the centre bore of motor housing blind end, the external part and the motor housing of bearing holder (housing, cover) are welded to connect, bushing and packing ring are set with the external part of motor shaft, bushing is interference fitted with motor shaft, and packing ring is pressed between bearing holder (housing, cover) and bushing.The occurrence of the utility model is applied on the four-axle aircraft of inverted flight, and end cap can be avoided to be rectified, and sub- friction is worn out, and the motor gapless that triggers because falling of four-axle aircraft is stuck.
Description
Technical field
It the utility model is related to a kind of micromotor, particularly a kind of hollow cup permanent magnetic direct current for four-axle aircraft
Micro machine.
Background technology
The advantages that hollow-cup permanent-magnet direct-current micromotor is because of small volume, torque is big, efficiency high is extensive in miniature remote controlled Toy Industry
Using it includes motor housing, motor shaft, bearing holder (housing, cover), end cap and commutator etc., one end of motor shaft and one end of bearing holder (housing, cover)
Stretched out from the centre bore of motor housing blind end, end cap is covered in the openend of motor housing.Existing hollow cup permanent magnetic direct current
Micro machine can be advantageously applied to the four-axle aircraft just flown, but in the four-axle aircraft of inverted flight（That is the stretching of motor shaft
Vertically downward, the propeller on motor shaft is located at the lower section of motor at end）But there are the following problems during upper use：Due to spiral shell
Rotation oar is located at the lower section of motor, motor shaft together with motor internal rotating part by by thrust vertically upward, in the thrust
Under effect, commutator is in Frotteurism all the time with end cap, end cap central will be caused worn out and influences the life-span of motor.And by
In four-axle aircraft it some times happens that situation about falling, motor shaft is hit power and bearing holder (housing, cover) is moved into motor when falling,
Cause motor gapless and stuck, so as to influence the normal work of motor.
The content of the invention
The purpose of this utility model is to provide a kind of hollow-cup permanent-magnet direct-current micromotor, the four-axle aircraft applied to inverted flight
On, end cap can be avoided to be rectified, and sub- friction is worn out, and the stuck feelings of motor gapless that four-axle aircraft triggers because falling
The generation of condition.
Hollow-cup permanent-magnet direct-current micromotor described in the utility model, including motor housing, motor shaft, bearing holder (housing, cover) and end
Lid, one end of motor shaft and one end of bearing holder (housing, cover) are stretched out from the centre bore of motor housing blind end, the external part of bearing holder (housing, cover)
It is welded to connect with motor housing, bushing and packing ring is set with the external part of motor shaft, bushing is interference fitted with motor shaft, pad
Circle coordinates with motor shaft clearance, and packing ring is pressed between bearing holder (housing, cover) and bushing.
The packing ring is by a metal washer and a plastic washer is overlapping forms, and the bushing is copper bush, plastic mattress
Circle is between metal washer and bushing.
The inner surface center of the end cap offers blind hole, and blind hole is built with high temperature resistant luboil.
The utility model is because the external part in motor shaft sets bushing and packing ring, and outside the external part and motor of bearing holder (housing, cover)
Shell is welded to connect, and motor shaft by airscrew thrust and because of four-axle aircraft in the presence of generation impulsive force is fallen, motor
The rotating part of axle and motor internal will not move into motor, so as to avoid electric motor end cap be rectified sub- friction it is worn out and
The occurrence of motor gapless of initiation is stuck, therefore can effectively ensure that the normal work of motor and the service life of motor.
Brief description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of hollow-cup permanent-magnet direct-current micromotor described in the utility model.
Fig. 2 is the enlarged partial sectional view of the motor shaft external part of the hollow-cup permanent-magnet direct-current micromotor；
Fig. 3 is the front view of the hollow-cup permanent-magnet direct-current micromotor end cap.
Embodiment
As shown in Figure 1, Figure 2 and Figure 3, the hollow-cup permanent-magnet direct-current micromotor includes motor housing 3, motor shaft 8, bearing holder (housing, cover)
4th, end cap 1 and commutator 9, one end of motor shaft 8 and one end of bearing holder (housing, cover) 4 are stretched out from the centre bore of the blind end of motor housing 3,
End cap 1 is covered in the openend of motor housing 3, and the external part of bearing holder (housing, cover) 4 is welded with motor housing 3 using laser welding process
Connect, be set with bushing 7 and packing ring on the external part of motor shaft 8, bushing 7 is copper bush, and it is fitted on motor shaft 8 and electricity
Arbor is interference fitted, and packing ring is by a metal washer 5 and a plastic washer 6 is overlapping forms, and itself and the gap of motor shaft 8 coordinate,
It is pressed between bearing holder (housing, cover) 7 and bushing 4, and plastic washer 6 is between metal washer 5 and bushing 7.The end cap 3 it is interior
Centre of surface offers blind hole 2, and blind hole 2 can further mitigate commutator 9 built with high temperature resistant luboil, high temperature resistant luboil
With the fretting wear between end cap 1.
Claims (3)
1. a kind of hollow-cup permanent-magnet direct-current micromotor, including motor housing（3）, motor shaft（8）, bearing holder (housing, cover)（4）And end cap（1）,
One end of motor shaft and one end of bearing holder (housing, cover) are stretched out from the centre bore of motor housing blind end, it is characterised in that：Bearing holder (housing, cover)
The external part is welded to connect with motor housing, and bushing is set with the external part of motor shaft（7）And packing ring, bushing and motor shaft
Interference fit, packing ring coordinates with motor shaft clearance, and packing ring is pressed between bearing holder (housing, cover) and bushing.
2. hollow-cup permanent-magnet direct-current micromotor according to claim 1, it is characterised in that：The packing ring is by a metal washer
（5）With a plastic washer（6）Overlapping to form, the bushing is copper bush, and plastic washer is between metal washer and bushing.
3. hollow-cup permanent-magnet direct-current micromotor according to claim 1 or claim 2, it is characterised in that：The end cap（1）Inner surface
Center offers blind hole（2）, blind hole is built with high temperature resistant luboil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720413450.2U CN206650565U (en) | 2017-04-19 | 2017-04-19 | A kind of hollow-cup permanent-magnet direct-current micromotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720413450.2U CN206650565U (en) | 2017-04-19 | 2017-04-19 | A kind of hollow-cup permanent-magnet direct-current micromotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206650565U true CN206650565U (en) | 2017-11-17 |
Family
ID=60277008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720413450.2U Active CN206650565U (en) | 2017-04-19 | 2017-04-19 | A kind of hollow-cup permanent-magnet direct-current micromotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206650565U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110710340A (en) * | 2017-06-08 | 2020-01-17 | 罗伯特·博世有限公司 | Housing for an electrical device with tightly moulded housing parts |
-
2017
- 2017-04-19 CN CN201720413450.2U patent/CN206650565U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110710340A (en) * | 2017-06-08 | 2020-01-17 | 罗伯特·博世有限公司 | Housing for an electrical device with tightly moulded housing parts |
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