CN206452229U - Brushed DC motor - Google Patents
Brushed DC motor Download PDFInfo
- Publication number
- CN206452229U CN206452229U CN201720067404.1U CN201720067404U CN206452229U CN 206452229 U CN206452229 U CN 206452229U CN 201720067404 U CN201720067404 U CN 201720067404U CN 206452229 U CN206452229 U CN 206452229U
- Authority
- CN
- China
- Prior art keywords
- bearing
- copper sheet
- positioning hole
- face
- armature spindle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses brushed DC motor, the two ends of electric machine casing are fixedly connected with left and right end cap, left end cap is provided with left bearing positioning hole and left bearing, right end cap is provided with right bearing positioning hole and right bearing, the left axle end of armature spindle carries out pivoting support by left bearing, the right axle end of armature spindle carries out pivoting support by right bearing, it is characterised in that：Its right end face of right axle bearing outer-ring carries out axial limiting by the step of right bearing positioning hole, the left end face of right bearing inner ring carries out axial limiting by the shaft block ring on armature spindle, volute spring is provided between left bearing and commutator, the its right end face of the small head end and left bearing inner ring of volute spring offsets, the bottom end face of stub end and commutator offsets, and the left end face of left axle bearing outer-ring is spacing by the step progress of left bearing positioning hole.The utility model has the advantages that armature spindle has reliable axially position, commutator manufacture craft is simple, lightweight, cost is low, sound construction, perfect heat-dissipating, meets high rotary speed working requirement.
Description
Technical field
The utility model is related to a kind of improvement invention of brushed DC motor.
Background technology
The brushed DC motor of prior art, is primarily present following deficiency：1. the axially position of armature spindle is not especially may be used
Lean on, axial movement value is big when motor works；2. weight weight, the heat dispersion of commutator are poor, above-mentioned factor has all directly affected brush
The high rotary speed working requirement of direct current generator；3. the manufacture craft of commutator is complex, cost is high.The commutator of prior art,
The commutation copper sheet of the uniform screening of excircle including plastic substrate and in plastic substrate, the medial surface of commutation copper sheet will set hook
Is combined in implantation plastic substrate with plastic substrate, hook needs cold punching technology to be formed, therefore commutation copper sheet not only manufacture craft
It is complex, and weight weight, the consumptive material of commutation copper sheet are big, cost is high；And plastic substrate will be combined with hook, so plastics
Matrix will be configured with the full-height of commutation copper sheet, therefore the same weight weight of plastic substrate, consumptive material are big, cost is high, simultaneously
Also reduce the heat dispersion of commutator；Further, since the weight weight rotary inertia of commutation copper sheet is big, to improve the knot of commutator
Structure firmness, the medial surface of commutation copper sheet often there is provision of reinforcement annular groove to place reinforcing ring, therefore commutation in above-below direction
Device structure is increasingly complex also to increase cost；Further, the crotch of the commutation copper sheet often row's of generation phenomenon in bonding wire, causes weldering
Line mass is bad, influences electrical machinery life.
The content of the invention
In view of the deficiencies in the prior art, the purpose of this utility model, which is to provide a kind of armature spindle, has reliable axially position,
Commutator manufacture craft is simple, lightweight, cost is low, sound construction, perfect heat-dissipating, and meet high rotary speed working requirement has brush
Direct current generator.
The utility model adopts the following technical scheme that to complete：
Brushed DC motor, including electric machine casing and stator component, rotor part in electric machine casing, electric machine casing
Two ends be fixedly connected with left and right end cap, left end cap, which is provided with left bearing positioning hole, left bearing positioning hole, installs left bearing, right end cap
Provided with right bearing positioning hole, right bearing is installed in right bearing positioning hole, rotor part includes armature spindle and is fixed on armature spindle
Commutator, the left axle end of armature spindle carries out pivoting support by left bearing, and the right axle end of armature spindle carries out revolution branch by right bearing
Hold, it is characterised in that：Its right end face of right axle bearing outer-ring carries out axial limiting, right bearing inner ring by the step of right bearing positioning hole
Left end face by armature spindle shaft block ring carry out axial limiting, between left bearing and commutator be provided with Conical Projectile
Spring, its right end face of the small head end and left bearing inner ring of volute spring offsets, and the bottom end face of stub end and commutator offsets, left
The left end face of bearing outer ring is carried out spacing by the step of left bearing positioning hole.
After adopting the above technical scheme, making armature spindle obtain reliable axially position, motor using the compression of volute spring
Axial movement value is small during work, so that the high rotary speed working requirement of brushed DC motor is effectively ensured.
Preferably, the commutator includes the commutation copper sheet for surrounding cylinder, the interior lateral surface of commutation copper sheet is light
Leave clearance for insulation between the sliding face of cylinder, adjacent commutation copper sheet, the top of commutation copper sheet carries crotch, the top of commutation copper sheet with
Upper lid is connected, and upper lid is more than the external diameter of cylinder to form commutation copper sheet with the integral injection-compression molding of commutation copper sheet, the external diameter of upper lid
Upper reinforcing ring, the bottom of commutation copper sheet is connected with lower cover, and the external diameter of lower cover is more than the external diameter of cylinder to form commutation copper sheet
Lower reinforcing ring.
After adopting the above technical scheme, the structure of commutator is greatly optimized, the medial surface of 1. commutation copper sheets is not required to set
Hook is put, manufacture craft is simple, lightweight, cost is low, and the rotary inertia of commutation copper sheet is small；2. plastics base is replaced by upper and lower covers
Only it need to consider to reserve the distance that commutation copper sheet contacts with carbon brush between body, upper and lower covers to be combined with hook without consideration, therefore on
Lower cover is not required to be configured with the full-height of commutation copper sheet, upper and lower covers compared to plastic substrate is lightweight, consumptive material is few, cost is low,
The center section of commutation copper sheet is completely formed hollow out design simultaneously, improve the heat dispersion of commutator；3. upper and lower covers is outer
Footpath, which is more than the external diameter of cylinder, i.e. upper and lower covers, directly to form commutation from the lateral direction banding commutation copper sheet of commutation copper sheet
The reinforcing ring up and down of copper sheet, improves the sound construction degree of commutator；4. commutator is lightweight, sound construction, perfect heat-dissipating,
The rotary inertia of commutation copper sheet is small simultaneously, therefore, it is possible to more preferably meet the high rotary speed working requirement of direct current generator.
Preferably, being abutted on the inside of the outer circular top part and crotch of the upper lid.By above-mentioned design, in bonding wire
Upper lid can give crotch support on the inside of crotch, it is to avoid crotch produces the row's of falling phenomenon, it is ensured that bonding wire quality, and then ensures the motor longevity
Life.
Preferably, the adjacent side of the commutation copper sheet is recessed provided with arc.By above-mentioned design, one is that can mitigate to change
To the weight of copper sheet, while will not make the manufacture craft of commutation copper sheet becomes complicated（Because commutation copper sheet is with copper wires mostly
Formed using drawing process）；Two be that can increase the bond strength between commutation copper sheet and upper and lower covers.
Brief description of the drawings
The utility model has drawings described below：
Fig. 1 is the structural representation of brushed DC motor,
Fig. 2 is the top-direction view of commutator,
Fig. 3 is Fig. 2 A-A views,
Fig. 4 is Fig. 3 B-B views.
Embodiment
As illustrated, brushed DC motor of the present utility model, including electric machine casing 1 and the stator in electric machine casing
Part 2, rotor part, the two ends of electric machine casing 1 are fixedly connected with left and right end cap, and left end cap 7 is provided with left bearing positioning hole, left bearing
Left bearing 10 is installed, right end cap 3, which is provided with right bearing positioning hole, right bearing positioning hole, installs right bearing 4, rotor portions in positioning hole
Part includes armature spindle 5 and the commutator 8 being fixed on armature spindle, and the left axle end of armature spindle 5 carries out pivoting support by left bearing 10,
The right axle end of armature spindle 5 carries out pivoting support by right bearing 4, its right end face of the outer ring of right bearing 4 by right bearing positioning hole platform
Rank carries out axial limiting, and the left end face of the inner ring of right bearing 4 carries out axial limiting by the shaft block ring 6 on armature spindle, left
Volute spring 9, its right end face phase of the small head end and the inner ring of left bearing 10 of volute spring 9 are provided between bearing 10 and commutator 8
Support, the bottom end face of stub end and commutator 8 offsets, the left end face of the outer ring of left bearing 10 is entered by the step of left bearing positioning hole
Row is spacing.The commutator 8 includes 22 commutation copper sheets 83 for surrounding cylinder, and the interior lateral surface of commutation copper sheet 83 is
Clearance for insulation 86 is left between smooth, cylindrical peripheral surface, adjacent commutation copper sheet 83, the adjacent side of commutation copper sheet 83 is recessed provided with arc
85, the top of commutation copper sheet 83 carries crotch 84, and the top of commutation copper sheet 83 is connected with upper lid 81, and upper lid 81 uses phenolic moulding powder material
Material, upper lid 81 is more than the external diameter of cylinder to form commutation copper sheet with the integral injection-compression molding of commutation copper sheet 83, the external diameter of upper lid 81
83 upper reinforcing ring, the bottom of commutation copper sheet 83 is connected with lower cover 82, and lower cover 82 uses bakelite powder material, lower cover 82 and commutation copper
The integral injection-compression molding of piece 83, external diameter of the external diameter more than cylinder of lower cover 82 is described to form the lower reinforcing ring of commutation copper sheet 83
The inner side of the outer circular top part and crotch 84 of upper lid 81 is abutted.
Claims (4)
1. brushed DC motor, including electric machine casing and stator component, rotor part in electric machine casing, electric machine casing
Two ends are fixedly connected with left and right end cap, and left end cap, which is provided with left bearing positioning hole, left bearing positioning hole, installs left bearing, and right end cap is set
Have and right bearing is installed in right bearing positioning hole, right bearing positioning hole, rotor part includes armature spindle and is fixed on armature spindle
Commutator, the left axle end of armature spindle carries out pivoting support by left bearing, and the right axle end of armature spindle carries out pivoting support by right bearing,
It is characterized in that：Its right end face of right axle bearing outer-ring carries out axial limiting by the step of right bearing positioning hole, right bearing inner ring
Left end face carries out axial limiting by the shaft block ring on armature spindle, and volute spring is provided between left bearing and commutator,
Its right end face of the small head end and left bearing inner ring of volute spring offsets, and the bottom end face of stub end and commutator offsets, left axle
The left end face of bearing outer-ring is carried out spacing by the step of left bearing positioning hole.
2. brushed DC motor as claimed in claim 1, it is characterised in that：The commutator includes surrounding the commutation of cylinder
Copper sheet, the interior lateral surface of commutation copper sheet is smooth, cylindrical peripheral surface, and clearance for insulation is left between adjacent commutation copper sheet, commutation copper sheet
Top carries crotch, and the top of commutation copper sheet is connected with upper lid, and upper lid and the integral injection-compression molding of commutation copper sheet, the external diameter of upper lid are big
In the external diameter of cylinder to form the upper reinforcing ring of commutation copper sheet, the bottom of commutation copper sheet is connected with lower cover, and the external diameter of lower cover is big
In the external diameter of cylinder to form the lower reinforcing ring of commutation copper sheet.
3. brushed DC motor as claimed in claim 2, it is characterised in that：The outer circular top part of the upper lid and the inner side of crotch
Abut.
4. brushed DC motor as claimed in claim 2, it is characterised in that：The adjacent side of the commutation copper sheet is provided with arc
It is recessed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720067404.1U CN206452229U (en) | 2017-01-20 | 2017-01-20 | Brushed DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720067404.1U CN206452229U (en) | 2017-01-20 | 2017-01-20 | Brushed DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206452229U true CN206452229U (en) | 2017-08-29 |
Family
ID=59666819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720067404.1U Expired - Fee Related CN206452229U (en) | 2017-01-20 | 2017-01-20 | Brushed DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206452229U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787390A (en) * | 2017-01-20 | 2017-05-31 | 陈振宁 | Brushed DC motor |
-
2017
- 2017-01-20 CN CN201720067404.1U patent/CN206452229U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787390A (en) * | 2017-01-20 | 2017-05-31 | 陈振宁 | Brushed DC motor |
| CN106787390B (en) * | 2017-01-20 | 2024-03-01 | 浙江炬光汽车零部件有限公司 | Brush DC motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170829 Termination date: 20210120 |