CN109245477A - motor and engine air management device - Google Patents
motor and engine air management device Download PDFInfo
- Publication number
- CN109245477A CN109245477A CN201710563192.0A CN201710563192A CN109245477A CN 109245477 A CN109245477 A CN 109245477A CN 201710563192 A CN201710563192 A CN 201710563192A CN 109245477 A CN109245477 A CN 109245477A
- Authority
- CN
- China
- Prior art keywords
- brush
- commutator
- shaft
- motor
- rotor
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
The present invention relates to a kind of motors, including stator and rotor, the rotor includes that shaft, fixing sleeve are set to the rotor magnetic core and commutator of shaft, the commutator is flat commutator, the insulating base and several commutator segments of the shaft are set to including fixing sleeve, several commutator segments are spaced apart in a circumferential direction around the shaft in the axial end face of the insulating base, the stator includes along axial with commutator segment sliding contact brush, and the contact surface that the brush is contacted with the commutator segment is the cambered surface of intermediate projections.Motor of the present invention only needs less running-in time just and can reach stable electric property state, and brush has preferable mechanical strength.
Description
[technical field]
The present invention relates to a kind of motor and using the engine air management device of the motor.
[background technique]
Currently, the brush motor for engine air management (Engine Air Management, EAM) device makes
The commutation of electric current is realized with cylindrical commutator, brush.The cylindrical commutator is installed to the shaft of rotor, including set
Several commutator segments for being set to the column insulator of shaft, being distributed in column insulation outer circumferential surface.Stator is equipped with radial electricity
Brush pot, brush are slideably mounted to brush cylinder, and brush supports the outer peripheral surface of cylindrical commutator under the action of the spring, with
Commutator segment sliding contact, it is similar with the outer peripheral surface of commutator that brush with the contact surface of commutator segment is traditionally arranged to be plane or shape
Concave surface.
However, above-mentioned motor has the following problems, since the diameter of the motor is smaller, by this radial dimension of limitation,
Brush is smaller in the length of circumferencial direction, and in order to reduce current density, cylindrical commutator and brush need longer axial direction
Length increases the cross-sectional area of the brush in the axial direction, causes brush that narrow but also long shape is presented not only, and mechanical strength is weaker,
It is easily broken off.In addition, the contact surface of brush is plane or concave surface, it is easy to brush be caused to contact unstable, shadow with commutator segment
Ring the electric property of motor.
[summary of the invention]
The purpose of the present invention is to provide a kind of preferable motors of the mechanical strength of electric property and brush.
The present invention provides a kind of motor, including stator and rotor, and the rotor includes that shaft, fixing sleeve are set to turning for shaft
Sub- magnetic core and commutator, it is characterised in that: the commutator is flat commutator, and the insulation of the shaft is set to including fixing sleeve
Pedestal and several commutator segments, several commutator segments are spaced apart in a circumferential direction around the shaft in the insulating base
Axial end face, the stator includes along axial with commutator segment sliding contact brush, the brush and the commutator segment
The contact surface of contact is the cambered surface of intermediate projections.
The present invention also provides a kind of motor, including stator and rotor, the rotor includes that shaft, fixing sleeve are set to shaft
Rotor magnetic core and commutator, it is characterised in that: the commutator includes multiple commutator segments around shaft distribution, if described
Dry commutator segment is arranged perpendicular to the shaft, and the stator includes along axial with commutator segment sliding contact brush, described
The contact surface that brush is contacted with the commutator segment is the cambered surface of intermediate projections.
The present invention also provides a kind of engine air management devices comprising above-mentioned motor.
Compared to the prior art, the brush of motor of the present invention and the contact surface of commutator segment sliding contact are the arc of intermediate projections
Shape can improve the degree of agreement of the contact area of brush and commutator segment, and making motor only needs less running-in time to can reach
Stable electric property state.In addition, several commutator segments are set to the axial end face of insulating base, above-mentioned brush is in axial side
It is contacted upwards with commutator, the commutator is made to have biggish radial dimension, the brush and commutator segment have biggish contact surface
Product, the contact surface shape of the brush can do it is more balanced, to increase the mechanical strength of brush.
[Detailed description of the invention]
Fig. 1 is a kind of schematic diagram for motor that one embodiment of the invention provides；
Fig. 2 is the decomposition diagram of motor shown in Fig. 1；
Fig. 3 is the commutator of motor shown in Fig. 1 and the schematic diagram of shaft；
Fig. 4 is the side view of commutator shown in Fig. 3；
Fig. 5 is the schematic diagram of the end cap of motor shown in Fig. 1；
Fig. 6 is the floor map of the end cap of motor shown in Fig. 5；
Fig. 7 is the commutator of motor shown in Fig. 1 and the schematic diagram of brush；
Fig. 8 is mounted to schematic diagram of the brush in a view directions of elastic arm；
Fig. 9 is mounted to schematic diagram of the brush in another view directions of elastic arm.
[specific embodiment]
The invention will be further described with reference to the accompanying drawings and examples.
With reference to Fig. 1 and Fig. 2, motor 100 provided in this embodiment is brush motor, including stator 20 and rotor 80.This reality
It applies in example, rotor 80 is installed to the inside of stator 20 and can the rotation of relative stator 20.
The shell 21 of stator 20 including tubular, the permanent magnet (not shown) for being installed to 21 inner wall of shell, be installed to it is outer
The end casing 23 of 21 open end of shell, the end cap 22 for being installed to end casing 23 and being at least partially housed in shell 21.Shell 21
Open end is equipped with the positioning region 211 of protrusion, and positioning region 211 is matched with the location hole 231 on end casing 23, thus by shell 21
It is positioned and fixed together with end casing 23.Brush assembly of electric 25 and power supply terminal 26, the power supply terminal are installed on end cap 22
26 for connecting external power supply.Stator 20 can also add waveform splinter 24, waveform splinter 24 be installed to shell 21 with opening
Hold opposite closed end.
Rotor 80 is set to the rotor core 82, commutator 83, coiling to rotor core of shaft 81 including shaft 81, fixing sleeve
32 and the rotor windings 84 that are electrically connected with the commutator segment of commutator 83.Rotor core 82 and commutator 83 are all housed in shell 21
It is interior, and commutator 83 is close to the open end of shell 21.Shaft 81 is mounted to bearing 81a and installation in the closed end of shell 21
To the bearing 81b support in end casing 23, so that 80 relative stator 20 of rotor be enable to rotate.In other embodiments, described
Bearing 81b also may be mounted in the end cap 22.One end of shaft 81 passes through end cap 22 and end casing 23, and end is fixed
Pinion gear 85 is arranged with for externally driving.The part being located in the end cap 22 in the shaft 81 is arranged with an axle sleeve 86,
The axle sleeve 86 is used to reinforce the intensity in 81 this region of shaft, prevents from deforming because of vibration.The axle sleeve 86 is preferably but not limited to
It is made of metal material, such as or insulating materials.The axle sleeve 86 between the bearing 81b and commutator 83,
And axially supported with bearing 81b and commutator 83, axial position-limiting action is played to commutator 83.
With reference to Fig. 3, commutator 83 is a platypelloid type commutator, and insulating base 831, the shape of shaft 81 are set to including fixing sleeve
At several slot segmentations 835 of the axial end face in insulating base 831, and it is spaced and divides in a circumferential direction around the shaft 81
It is distributed in several commutator segments 832 of 831 axial end face of insulating base.The circumferentially spaced arrangement of several slot segmentations 835, and
Between adjacent commutator segment 832, adjacent commutator segment 832 is spaced apart.The commutator segment 832 can be and be not limited to gold
Belong to layer or carbon-coating.The axial end face of the insulating base 831 is vertical with the shaft 81.
Preferably, the middle section of the axial end face of the insulating base 831 forms an annular convex platform 834, the annular
The material of boss 834 is insulating materials, for being fixedly connected between reinforced insulation pedestal 831 and shaft 81, and in the axis
Increase the creepage distance between commutator segment 832 and the axle sleeve 86 when set 86 is metal material.It is described several in order to which processing procedure is convenient
Segmentation conduit 835 can also further extend to the annular convex platform 834, and annular convex platform 834 is divided into several fan convex annulars
Platform.
Several commutator segments 832 are respectively arranged on the outside of the annular convex platform 834, including main part 832a and formation
In the wire connecting portion 832b of main part 832a radial outside.Main part 832a is located at the axial end face of insulating base 831, is used for and electricity
Brush contact.The main part 832a of each commutator segment 832 is between two adjacent segmentation conduits 835.Wire connecting portion 832b is certainly
The hook positioned at 831 peripheral side of insulating base that the radial outer end of main part 832a extends to form, for mounting rotor windings 84
To realize that commutator segment 832 is electrically connected with winding 84.Preferably, main part 832a is in fan annular, the center in the center of circle and shaft 81
It is overlapped, the radial outer side of main part 832a is concordant with the peripheral surface of insulating base 831, or does not protrude from insulating base
831 peripheral surface.The radially inner side of main part 832a extends to annular convex platform 834.
Referring to FIG. 4, the side profile of the insulating base 831 includes arc section 831b, guided by circular arc, it can be with
Make the coiling for mounting the rotor windings 84 after commutator segment 832 is linked up in the available effective support in the side of insulating base 831, subtracts
Few coiling disconnection problem because of caused by hanging and motor oscillating.In the present embodiment, the side of the insulating base 831 is taken turns
Exterior feature includes being parallel to the straightway 831a of shaft 81 and from the straightway 831a to another axial end face of insulating base 831
The arc section 831b that (not labeled) extends.In other embodiments, the side profile of the insulating base 831 can also be by two
Above arc section is formed by connecting.
Preferably, the both ends 84a and 84b for the coiling being mounted on hook do not intersect, and directly prolong to direction away from each other
It stretches, to avoid disconnection problem caused by the phase mutual friction of both ends.
With reference to Fig. 5 to Fig. 7, end cap 22 is equipped with one first accommodating chamber 36 close to one end of the commutator 83, and the other end is set
There is one second accommodating chamber (not shown).Brush assembly of electric 25 is mounted in first accommodating chamber 36.Second accommodating chamber is by covering
Plate 23 is closed, and is mounted therein with filter element capacitor and/or resistance.Filter element inductance can be installed on ipsilateral with brush
In one accommodating chamber 36, it can also be installed in second accommodating chamber.Brush assembly of electric 25 includes two elastic arms 251 and corresponding
Two brushes 252.Two elastic arms 251 are symmetrical relative to shaft 81, substantially at " eight " word, and respectively via filtering member
Part such as inductance etc. is electrically connected with power supply terminal 26.Elastic arm 251 is made of an electrically conducting material, and one end is installed to the first accommodating chamber 36
Bottom, the other end are hanging free end and installation brush 252.Certainly, the other end of elastic arm 251 can also be fixed to first
36 bottom of accommodating chamber.Elastic arm 251 and brush 252 are conductively connected, and are applied axial elastic force to brush 252 and made 252 edge of brush
The main part 832a of commutator segment 832 is axially supported, to realize the main part 832a sliding contact with commutator segment 832.It is preferred that
, the edge of the elastic arm 251 has to the flange 251a bent far from 252 side of brush, increases the elastic arm
251 intensity.Preferably, (figure is not for the form of the electric resistance welding of elastic arm 251 and the conductive terminal being fixed on end cap 22
Show) formed be reliably connected.The conductive terminal is via inductance connection to power supply terminal 26.In the present embodiment, elastic arm 251 is bullet
Piece.It should be understood that elastic arm 251 is also possible to spring wire.
Fig. 7, Fig. 8 and Fig. 9 are please referred to, brush 252 has a contact surface 253, for the main part 832a with commutator segment 832
CONTACT WITH FRICTION.The contact surface 253 is the cambered surface of intermediate projections in the initial state, and the main part of the commutator segment 832
832a is substantially planar.Preferably, several main part 832a are axially arranged perpendicular to motor, and are generally aligned in the same plane.It is preferred that
, from the motor in the radial direction, the contact surface 253 of the brush 252 is the cambered surface of intermediate projections.Therefore, brush
252 contact surface 253 is smaller with the contact area of commutator segment 832 in the initial state, contacts close to line, can improve contact zone
The degree of agreement in domain reduces the noise of motor.In this way, the less running-in time of 100 need of motor be can reach it is stable electrical
Performance state, and contact smoothly, there is metastable cogging torque.It is to be appreciated that with the continuous abrasion of brush 252,
The contact surface 253 eventually becomes plane, that is, the contact area of contact surface 253 and commutator segment 832 can be with the damage of brush 252
It consumes and is gradually increased.Preferably, a plurality of ditch spaced in the radial direction in motor is additionally provided on the contact surface 253
Slot 254 reaches inhibition commutation spark, reduces spark for increasing the contact resistance of the brush 252 and 832 moment of commutator segment
The purpose of caused electromagnetic interference.Preferably, it looks up from the axis of the motor, a plurality of groove 254 is presented with shaft
Center is the concentric arcs in the center of circle.
In the present embodiment, the projection of the contact surface 253 of brush 252 in the axial end face of the insulating base 831 of commutator 83
It is trapezoidal.Certainly, the contact surface 253 of brush 252 can also be other in the shape of the projection of the axial end face of insulating base 831
Shape, such as fan-shaped, rectangle or fan annular.
The present invention also provides a kind of engine air management (Engine Air Management, EAM) devices comprising
Above-mentioned motor, it is described for controlling each valve in car engine valve circuit.
Compared to the prior art, the brush 252 and the contact surface 253 of 832 sliding contact of commutator segment are intermediate projections
Arc can improve the degree of agreement of the contact area of brush 252 and commutator segment 832, and making motor only needs less running-in time
It can reach stable electric property state.In addition, several commutator segments 832 are set to the axial end face of insulating base 831, on
It states brush 252 to contact with commutator 83 in the axial direction, the commutator 83 is made to have biggish radial dimension, the brush
252 have a biggish contact area with commutator segment 832, the contact surface shape of the brush 252 can do it is more balanced, to increase
The mechanical strength of power-up brush 252.
Above embodiments only express the preferred embodiment of the present invention, and the description thereof is more specific and detailed, but can not
Therefore limitations on the scope of the patent of the present invention are interpreted as.It should be pointed out that for those of ordinary skill in the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, such as special to the difference in each embodiment
Sign is combined, and these are all within the scope of protection of the present invention.
Claims (12)
1. a kind of motor, including stator and rotor, the rotor includes that shaft, fixing sleeve are set to rotor magnetic core and the commutation of shaft
Device, it is characterised in that: the commutator is flat commutator, is set to the insulating base of the shaft including fixing sleeve and several changes
To piece, several commutator segments are spaced apart in a circumferential direction around the shaft in the axial end face of the insulating base,
The stator includes along axial with commutator segment sliding contact brush, the contact surface that the brush is contacted with the commutator segment
For the cambered surface of intermediate projections.
2. motor according to claim 1, it is characterised in that: from the motor radially, the contact of the brush
Face is the cambered surface of intermediate projections.
3. motor according to claim 1, it is characterised in that: the contact surface is equipped at least two radial directions in motor
Spaced groove on direction.
4. motor according to claim 3, it is characterised in that: look up from the axis of the motor, the groove present with
The center of shaft is the concentric arcs in the center of circle.
5. motor according to claim 1, it is characterised in that: axial direction of the contact surface of the brush in the insulating base
End face is projected as fan annular, fan-shaped, rectangle or trapezoidal.
6. motor according to claim 1, it is characterised in that: the commutator segment is fan annular, the center of circle and the rotor
Center of rotation be overlapped.
7. motor according to claim 1, it is characterised in that: the stator further comprises shell, is located at the shell
The end cap of open end and the elastic arm being fixed on end cap, the elastic arm install the brush, and the brush is in the elasticity
Elastic force lower edge axial direction and the commutator segment sliding contact of arm.
8. motor according to claim 7, it is characterised in that: the end cap is equipped with one first towards one end of rotor core
Accommodating chamber, the elastic arm and brush are housed in first accommodating chamber.
9. motor according to claim 8, it is characterised in that: one end of the elastic arm is installed to first accommodating chamber
Bottom, the other end installs the brush.
10. motor according to claim 7, it is characterised in that: the stator includes two elastic arms and two corresponding
Brush, described two elastic arms are relative to symmetrical formation " eight " word of the shaft.
11. a kind of motor, including stator and rotor, the rotor includes that shaft, fixing sleeve are set to the rotor magnetic core of shaft and change
To device, it is characterised in that: the commutator includes multiple commutator segments around shaft distribution, and several commutator segments are vertical
It is arranged in the shaft, the stator includes along axial and commutator segment sliding contact brush, and the brush is changed with described
The contact surface contacted to piece is the cambered surface of intermediate projections.
12. a kind of engine air management device comprising the described in any item motors of claim 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710563192.0A CN109245477A (en) | 2017-07-11 | 2017-07-11 | motor and engine air management device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710563192.0A CN109245477A (en) | 2017-07-11 | 2017-07-11 | motor and engine air management device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109245477A true CN109245477A (en) | 2019-01-18 |
Family
ID=65083580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710563192.0A Pending CN109245477A (en) | 2017-07-11 | 2017-07-11 | motor and engine air management device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109245477A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86205102U (en) * | 1986-07-21 | 1987-03-18 | 王学礼 | Electric motor with axial commutator |
| JPH09172756A (en) * | 1995-12-19 | 1997-06-30 | Denso Corp | Starter |
| JPH09260007A (en) * | 1996-03-27 | 1997-10-03 | Daido Steel Co Ltd | Brush having sliver contact point and manufacture therefor |
| CN2631076Y (en) * | 2003-07-01 | 2004-08-04 | 陈国梁 | Axial contact commutator for single-phase motor |
| CN1774854A (en) * | 2003-04-16 | 2006-05-17 | 西门子公司 | Fuel pump comprising an electric motor |
| CN101752939A (en) * | 2008-12-17 | 2010-06-23 | 德昌电机(深圳)有限公司 | Motor, electric brush and electric bush box used by motor |
| CN102082488A (en) * | 2009-11-30 | 2011-06-01 | 三洋电机株式会社 | Commutator motor |
| JP2011130613A (en) * | 2009-12-18 | 2011-06-30 | Mitsuba Corp | Electric motor |
| CN205753772U (en) * | 2016-06-29 | 2016-11-30 | 宁波新冠联机电有限公司 | A kind of brush assembly of electric of direct current generator |
| CN205811723U (en) * | 2016-05-31 | 2016-12-14 | 宁波华佑电子科技有限公司 | Motor brush plate in the automobile of a kind of life-span length |
| CN205960384U (en) * | 2016-06-13 | 2017-02-15 | 薛瑞华 | Plane commutator |
-
2017
- 2017-07-11 CN CN201710563192.0A patent/CN109245477A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86205102U (en) * | 1986-07-21 | 1987-03-18 | 王学礼 | Electric motor with axial commutator |
| JPH09172756A (en) * | 1995-12-19 | 1997-06-30 | Denso Corp | Starter |
| JPH09260007A (en) * | 1996-03-27 | 1997-10-03 | Daido Steel Co Ltd | Brush having sliver contact point and manufacture therefor |
| CN1774854A (en) * | 2003-04-16 | 2006-05-17 | 西门子公司 | Fuel pump comprising an electric motor |
| CN2631076Y (en) * | 2003-07-01 | 2004-08-04 | 陈国梁 | Axial contact commutator for single-phase motor |
| CN101752939A (en) * | 2008-12-17 | 2010-06-23 | 德昌电机(深圳)有限公司 | Motor, electric brush and electric bush box used by motor |
| CN102082488A (en) * | 2009-11-30 | 2011-06-01 | 三洋电机株式会社 | Commutator motor |
| JP2011130613A (en) * | 2009-12-18 | 2011-06-30 | Mitsuba Corp | Electric motor |
| CN205811723U (en) * | 2016-05-31 | 2016-12-14 | 宁波华佑电子科技有限公司 | Motor brush plate in the automobile of a kind of life-span length |
| CN205960384U (en) * | 2016-06-13 | 2017-02-15 | 薛瑞华 | Plane commutator |
| CN205753772U (en) * | 2016-06-29 | 2016-11-30 | 宁波新冠联机电有限公司 | A kind of brush assembly of electric of direct current generator |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190118 |